Feed swivel joint, rotary distributing valve, and product processing device

FIELD: machine building.

SUBSTANCE: feed swivel joint is proposed, which can represent a rotary distributing valve, and is meant for supply of fluid medium flow from inlet ports to outlet ports at coincidence of the corresponding openings made in the first and the second flat surfaces, which rotate relative to each other, and between which there is a gas bearing intended to create a carrying force between the first and the second surfaces.

EFFECT: enhanced operating reliability.

15 cl, 5 dwg

 

This invention relates to a rotary feed compounds and, in particular, to a rotary distribution valve, as well as to a device for processing product containing such rotary feed connection.

In the rotary distribution valve has two surfaces, which rotate relative to each other. Each surface has openings, and a rotary control valve is designed in such a way that during the rotation of the surfaces relative to each other holes located on one surface, periodically align with the holes on the other surface. During the period of coincidence of the fluid medium can flow from one hole to another, i.e. from one surface to the other, but when the holes do not match, the fluid flow can be stopped. Accordingly, the relative speed of rotation and the location of the holes can be selected to provide a specified flow distribution between the holes in time. In General, the holes can be located so that the aperture on one surface always coincides with the hole on the other surface. Accordingly, the rotary input connection can provide flow communication between the component corresponding to the one surface, and a component corresponding to D. the natives surface, while one surface is rotated relative to the other.

In General, there are two types of rotary distribution valves. The first type - cylindrical rotary distribution valves, in which the two surfaces have a cylindrical shape and inserted one into the other. However, the cylindrical rotary distribution valves are difficult to manufacture and therefore expensive, as it requires very precise control of two mating cylindrical surfaces. In addition, such valves of road maintenance due to the need to maintain consistency between the surfaces during use, which may, for example, be difficult due to the expansion valve components.

The second type of rotary valves rotary distribution valves with a flat surface, in which the said surfaces are flat and rotate relative to each other around an axis perpendicular to the surfaces. Such rotary distribution valves are easier to manufacture, since a flat surface is easier to manufacture. However, to prevent leakage of the fluid switchable rotary valve, it is important that these two surfaces were very close to each other or even touch what Ales. Accordingly, a problem may arise friction, leading, for example, for high speed wear, heat friction, higher energy consumption, which may require the use of larger engines to bring the surfaces in relative rotation, the use of more expensive materials and/or limitation of the period of service.

It should be understood that problems similar to those described above, just in a more General sense for all rotary feed connections.

In some cases, if the fluid supplied through the rotary feed connection or switching rotary valve is a liquid, the liquid may act as a lubricant. However, this is not always practical, and in other cases filed or switching the environment may not be liquid. For example, there may be a need for the possibility of using rotary feed connection for the power (or rotary distribution valve to switch) source of reduced pressure, for example, a vacuum pump. However, the use of a rotary feed connection for the power (or rotary distribution valve to switch) source of reduced pressure causes additional effort is reinaudo two surfaces to each other, compounding the problem of friction discussed above.

Thus, the purpose of this invention is to provide a rotary feed compound that at least partially addresses some of the above difficulties.

In accordance with this invention proposed a rotary input connection having one or more output ports and one or more input ports configured to create a flow of messages between one or more output ports and the specified one or more input ports, and have:

the first and second surfaces, made with the possibility of rotation relative to each other and having a corresponding shape, so that, during relative rotation of these first and second surfaces between them can be maintained essentially constant gap

each of these one or more input ports flow communicates with at least one aperture on the first surface,

each of these one or more output ports flow communicates with at least one aperture on the second surface

moreover, during the rotation of the specified first and second surfaces relative to each other at least one opening on the first surface of the at least periodically at m is re overlaps with at least one aperture on the second surface to allow flow of fluid from one to the other, and

characterized in that between the said first and second surfaces is a gas bearing configured to generate a lifting force between the first and second surfaces.

The location of the gas bearing between the first and second surfaces can provide an adjustable gap between the surfaces. Accordingly, this gap may be small enough so that any leakage switchable fluid sufficiently small for a given mode of operation of the rotary feed connection. At the same time providing a small gap can significantly reduce the problem of friction caused by the relative movement of the two surfaces. It should be understood that in some configurations, the gas bearing may not provide the actual gap between the two surfaces. However, due to the creation of a bearing force between the first and second surfaces, the pressure of contact between them may be reduced, which consequently reduces the frictional force acting between the two surfaces. In addition, even if the gas bearing does not provide a complete gap between the two surfaces, the gas bearing can provide a sufficient amount of gas between them, so that the specified gas acts as a lubricant between the two surfaces, which reduces Proc. of the interview.

With proper spacing of the holes in the first and second surfaces and their connection with input and output ports of the rotary input connection can be used as a rotary distribution valve that provides the specified duty cycle flow of messages between one or more input ports and one or more output ports.

In addition, the use of gas bearing may be particularly advantageous, because it essentially provides a constant gap. In particular, if the gap between these two surfaces is reduced for any reason, the bearing force of the gas bearing is increased, that is, it creates a tendency to increase the gap between the two surfaces again to the specified level. Similarly, if the gap between the two surfaces increases, the support force of the bearing is reduced, resulting in a tendency of convergence of the surfaces. Thus, the gap between the two surfaces remains constant even in case of fluctuations of other forces acting on the two surfaces.

Proposed turning the input connection can be used, in particular, to a power source of low pressure, that is, devices containing gas at a pressure below the pressure of the environment in which work is no rotary input connection, for example a vacuum pump.

In this case, the connection of the source of reduced pressure with at least one of the input ports leads to efforts acting on the two surfaces to ensure their convergence with each other. The greater the difference between the gas pressure in the specified source and pressure of the gas surrounding the rotary input connection, the greater the force that occurs between two surfaces. Similarly, the more effective area, which applies a reduced pressure, the greater the force acting on these surfaces. The effective area can correspond to the calculated square holes on the first surface, which is connected with a source of reduced pressure. However, due to the fact that the first and second surfaces may be very close to each other, can be mounted on the pressure gradient, in which the pressure increases from a level corresponding to the source of low pressure and having a place adjacent to the holes on the first surface, to a level appropriate to the environment and having a place at some distance from these holes. Accordingly, the effective area is a square, which would be equivalent to the force if the pressure on the whole of this area was equal to the pressure source is as low pressure. It should be noted that, since the gap between the first and second surfaces decreases, the pressure gradient changes, which leads to increase in effective surface area and, consequently, to increase support efforts of the bearing.

In any case, with appropriate management of gas bearing support force generated by the specified bearing can compensate for the effort, bringing the surface to each other in the connection to the source of reduced pressure, ensuring that the gap between the surfaces. In General, it should be understood that the gas bearing may be configured to trim the result of the efforts of the current on the surface to ensure their convergence, including any other efforts that can be applied to surfaces.

In one specific configuration, the rotary input connection may include a bracket that supports the elements of the specified connection and allows you to attach it to another node in the system that should be used for turning the feed connection. In this case, the first surface may be supported by the bracket so that it does not rotate, ensuring easy attach any source of fluid to said one or more input ports.

The second surface is the terrain can be supported on the bracket so that that it can rotate relative to the mounting and, therefore, also relative to the first surface around the axis of rotation. For example, the second surface may be mounted on the swivel bearing. Respectively, may be secured to the desired relative rotation of the first and second surfaces, for example, to provide a given switching between input and output ports of the rotary distribution valve.

One or both of the second surface may be supported on the bracket so that the surface can move in a linear direction parallel to the axis of rotation of the second surface to regulate a gap between the first and second surfaces. In one configuration, the second surface may be supported on the bracket so that it does not move in the direction parallel to the axis of its rotation, which reduces the complexity of the configuration of the bearing to the second surface. In this case, it should be understood that the first surface is supported on the bracket so that it can move in a linear direction parallel to the axis of rotation of the second surface, but may not move in any other direction relative to the mounting. In any case, it should be understood that the predetermined range of movement in a linear direction parallel to the axis of rotation of the Torah surface may be relatively small, since you want to ensure that only the specified range of movement necessary to maintain the gas bearing steady gap between the two surfaces under the influence of fluctuations of the external forces applied to these surfaces.

The gas bearing may be formed by one or more gas holes formed on one of the first and second surfaces, or on both of them and United with the source gas, the feed gas under pressure above ambient pressure, in which the rotary input connection.

Thus, from the gas holes of the bearing is fed a continuous stream of gas, which provides the desired support force. Depending on the requirements for turning the feed connection to the gas source may be a compressor, which sucks the air from the space surrounding the rotary input connection and shrink it. Alternatively, for example, he may serve a particular gas or mixture of gases from the tank. The first configuration can be simpler and less expensive. However, for feed, for example, inert gas, which should not interact, for example, with fluids supplied through the rotary feed connection, you may need a second configuration.

In one specific configuration, the gas bearing may and the n holes, and gas supply to the at least two holes of the gas bearing may be made in such a way that there is the possibility of independent adjustment of gas pressure. This configuration may provide an opportunity for improved management of the gap between the two surfaces.

For example, this configuration may provide various supporting efforts in various fields between the two surfaces. This can be an advantage, because the external forces acting on the surface, can be different in different areas. This situation may occur, for example, if the holes in the surfaces in one area connected with a source of fluid having a pressure different from the pressure in another area, and/or size of holes in the surface in one area is different from the size of the holes in another area.

Alternatively or additionally, it may be desirable to regulate the pressure of the gas coming from two different holes of the gas bearing, if these holes are of different sizes, for example due to restrictions on the size of surfaces.

Independent control of pressure for the two or more apertures of the gas bearing may be provided, for example, by connecting the connection holes with separate sources of gas and/or PU is eaten perform certain regulated valves in the flow lines, leading to the holes of the bearing.

Each of the holes of the gas bearing may be connected with the corresponding stop the flow of gas, for example, even if the holes are made with the ability to work at the same pressure. Performing for each hole of the gas bearing of the separate gas flow limiters that restrict the flow of gas from said hole, depending on pressure, may increase the resistance of the gap between the two surfaces. In particular, in this configuration, the change of the gap between the two surfaces at the location of one of the holes of the bearing may not be influenced by the support force provided by another hole of the bearing.

In the above-described configuration in which the first surface is supported by the bracket so that it does not rotate relative to the fastening specified one or more apertures of the gas bearing can be performed only on the first surface. This configuration may, in particular, to facilitate the supply of gas to the gas bearings.

These one or more apertures of the gas bearing can be placed on the ring around the axis of rotation of the second surface. In particular, said one or more holes can be made at locations equidistant from the axis of rotation the second surface. At least one of these holes can be in the form of a channel or groove made in the first surface along at least part of the above rings encircling the axis of rotation of the second surface. For example, the gas bearing may be provided with a hole, which is an annular channel, completely surrounding the axis of rotation of the second surface. The gas bearing may have one or more apertures in the form of channels passing through the arcs of the ring around the axis of rotation of the second surface. However, it should be understood that the openings of the gas bearing may be of any suitable form.

These one or more apertures in the first surface, which are connected with the specified one or more input ports may have a configuration corresponding to any of the configurations described above for the holes of the gas bearing.

However, it should be understood that the specified one or more apertures connected to input ports can be located on one or more rings than used to locate holes of the bearing, to prevent the coincidence of holes on the second surface, connected to the output ports, with the bore of the bearing during use of the rotary feed connection.

In one specific configuration of the openings of the gas n is Lipnica can be located along the first ring around the axis of rotation of the second surface, and the holes in the first surface connected to one or more input ports can be located along the second ring. With this configuration, the specified first ring may be located at a greater distance from the axis of rotation of the second surface and the second ring. This configuration may be preferred because it can provide more space for the gas bearing. In addition, when performing the connection holes at a greater distance from the axis of rotation of the second surface can be enhanced stability of rotation of the second surface relative to the first surface.

Turning the input connection can be used as part of a device for processing of the product. For example, at least one input port rotary feed connection can be connected with a source of reduced pressure, and at least one output port can be connected with the respective holder of the product attached to the second surface. Accordingly, the holder may at least periodically flow communication with a source of reduced pressure. This configuration may be preferred because of reduced pressure may be used to attach the product to the holder for moving it, for example, rotatably cont the act together with the second surface. This can provide the ability to move product from one part of the process, such as production process, test and/or control to another part of this process. Alternatively or additionally, it may facilitate the inspection of the product. For example, the holder of the product can be made with the possibility of additional rotation relative to the second surface so that the product can be inspected on each side.

Below is the description of the invention with the aid of non-limiting examples with reference to the accompanying drawings, in which:

figure 1 depicts a General view of the rotary distribution valve in accordance with this invention,

figure 2 depicts the portion of the concrete configuration of the rotary distribution valve in accordance with this invention,

figure 3 depicts in more detail the rotary distribution valve, shown in figure 2,

figa and 4b depict a possible control system for the air bearing used in the configurations shown in figure 2 and 3.

The following is a description of the present invention in the context of the rotary distribution valve 10, namely, a rotary feed connection, in which the holes on the two corresponding surfaces are located so that at least one input port periodically flowing soo is transformed with at least one output port, moreover, these input and output ports are connected with the corresponding holes on the surfaces. However, it should be understood that by appropriate location of the holes on the surfaces can be created universal rotatable input connection, in which, despite the relative rotation of the first and second surfaces, at least one input port is constantly flowing communicates with at least one output port.

Figure 1 schematically shows the configuration of the rotary distribution valve 10 in accordance with this invention. In the depicted configuration, the valve 10 includes a first disk 11, which has a first surface 11a and the second disk 12 having the second surface 12A located adjacent to the first surface 11a. The second disk 12 can rotate around the axis 13 relative to the position of the first disk 11.

The first disk 11 has one or more input ports 21, connected by passages 22, which provides the possibility of running messages with one or more holes 23 located on the first surface 11a. Accordingly, the second disk 12 has one or more output ports 31 which are connected with passages 32, which provides the possibility of running messages with one or more holes 33 located on the second surface 12A.

During the rotation of the second disc 12 relative to the positive of the first disk 11 holes 23 on the first surface 11a periodically align with the holes 33 on the second surface 12A. As shown in figure 1, when the hole 33 on the second surface 12A at least partly coincides with the hole 23 on the first surface 11a, between the inlet port 21 and outlet port 31 may leak fluid.

The input port 21 may be connected to a source 25 of the fluid. Accordingly, during the rotation of the second disk 12 relative to the first disk 11 fluid is periodically delivered from the source 25 to the input port 21, passing between the hole 23 on the first surface 11a to the hole 33 on the second surface 12A, and further to the output port 31. It should be understood that if the source 25 is the source of reduced pressure such as a vacuum pump, the fluid flows in the opposite direction, i.e. from the outlet port 31 to the input port 21 and further to the source 25 of reduced pressure.

By appropriate location of the holes 23 on the first surface 11a and holes 33 on the second surface 12A can be obtained the desired duty cycle of the switching of connections between the input ports 21 and output ports 31.

It should be understood that it may be performed any number of input ports 21 and output ports 31 and that each port can be connected to different sources of fluid or, for example, with different areas that need to periodically connect to the source t is a heap environment using the rotary distribution valve.

Similarly, the first and second surfaces 11a, 12A can be performed any number of holes 23, 33, which can be connected respectively with any of the input ports 21 and output ports 31. You should also understand that the duty cycle of the valve 10 can be carried out in such a way that during one part of the operating cycle of the output port 31 flow communicates with one of the input ports 21, and during another part of the business cycle flow communicates with the other of the input ports 21. In addition, it should be understood that in other parts of the operating cycle of the flowing message input ports 21 and/or output ports 31 respectively with the output port 31 or the input port 21 can be absent.

In addition, it should be understood that, although shown in figure 1, the valve 10 includes first and second disks 11, 12, the invention drives is not required. Accordingly, the possible use of alternative forms of the components, provided that they are respectively the first surface 11a and the second surface 12A, which can be located adjacent to each other.

In addition, despite the fact that the surface 11a, 12A, shown in figure 1, are flat, this is not required. However, the first surface 11a and the second surface 12A must have the appropriate forms and be located is ageny with capability of maintaining a constant gap between the two surfaces 11a, 12A, when the rotation of the second surface 12A with respect to the first surface 11a around the axis 13 of rotation. For example, the first and second surfaces may be tapered to form a conical distributor valve. However, a flat surface may be preferred because they are simpler for precision manufacturing.

As shown in figure 1, between the first and second surfaces 11a, 12A is supported by the gap. This reduces the friction between the first and second surfaces 11a, 12A. It should be understood that figure 1 is a schematic depiction and the gap 15 between the first and second surfaces 11a, 12A shown are not to scale. In particular, the interval between the first and second surfaces 11a, 12A may be very small to ensure minimize leakage of fluid.

As shown in the drawing, the proposed valve 10 includes a gas bearing, which supports the gap 15 between the first surface 11a and the second surface 12A. The gas bearing has one or more apertures 16, in which the gas is supplied by source 17 gas and provide a gas flow 18 creating support the effort.

You should understand that you can use any number of holes 16, as described in more detail below. Similarly, it should be understood that it is possible to use a number of different source is in 17 gas. In particular, the source 17 of the gas may be a compressor that sucks gas, e.g. air, from the environment in which the valve 10, and compresses it with providing gas under pressure to the bore 16 of the gas bearing. Alternatively or additionally, the source 17 may be a gas tank, which contains a specific gas or mixture of gases supplied to the holes 16. For example, the source 17 may submit an inert gas. In any case, the source 17 includes a filter, ensuring the preventing gas bearing any solid particles that may cause it to block.

Figure 2 and 3 shows another configuration of the rotary distribution valve in accordance with this invention. Figure 2 shows a top view of the first surface 11a, which is part of the rotary distribution valve, and figure 3 shows a section view of a portion of the first surface 11a and the corresponding part of the second surface 12A adjacent to the first surface 11a.

As shown in figure 2, the first and second surfaces have an annular shape, and through their centre passes the axis 13 perpendicular to the surfaces 11a, 12A and corresponding to the axis 13 of rotation of the second surface 12A with respect to the first surface 11a.

The first surface 11a has openings 23, which p is otono communicated through passage 22 with one or more input ports 21. The second surface 12A has openings 33, which flow is communicated through the passage 32 with the output ports 31. As shown in figure 2, the holes 23 in the first surface 11a is located on the first ring 51 passing around the axis 13. Holes 33 in the second surface 12A are located on the specified surface 12A at the same distance from the axis 13. Accordingly, during the rotation of the second surface 12A with respect to the first surface 11 around the axis 13 each hole 33 periodically at least partially overlaps with one of the holes 23 on the first surface.

Accordingly, during such periods of output ports 31, United with the holes 33 in the second surface 12A, a flow is communicated with the input port 21, which is connected with the hole 23 in the first surface 11a adjacent to the hole 33 in the second surface 12A.

As shown in figure 2, the holes 23 in the first surface 11a can be of different sizes. Accordingly, it is possible to control the part of the operating cycle during which the output port 31 flow communicates with the inlet ports 21, associated with the holes 23. For example, if the holes 33 in the second surface are relatively small compared to the circumference of the first ring 51, the part of the ring 51, which passes through the hole 23 corresponds to the part of the business cycle turning the soap is a separating valve, in which each output port 31 flow is communicated with the input port 21 connected with the hole 23.

In the configuration shown in figure 2, one of the holes 23 corresponds to half the circumference of the ring 51. Accordingly, each output port 31 can flow to communicate with the corresponding input port 21 for approximately half of the working cycle of the rotary distribution valve.

In the case of holes 23, 33 in the first or second surfaces 11a, 12A, which are relatively large compared to the size of the specified surface 11a, 12A, the hole may be in the form of a channel made in a surface 11a, 12A and connected to the corresponding input or output port 21, 31 through one or more passages 22, 32.

As shown in figure 3, the input port 21 may be connected to a source 25 of the fluid. It should be understood that the source 25 can apply the fluid to port 21 and then, periodically, to the output ports 31. Alternatively, the specified source can be a source of low pressure such as a vacuum pump, which extracts fluid from the input port 21 and then, periodically, from the output ports.

As shown in figure 2 and 3, the rotary distribution valve having depicted configuration, also contains a gas bearing having a hole 16 which is handle the containers with gas flow from the first surface 11a to the second surface 12A to maintain the gap between these surfaces. The configuration of the gas bearing described in more detail below.

The specific configuration of the rotary distribution valve shown in figure 2 and 3, further includes a mounting structure 40, which may be used for fastening specified valve to another component 41, such as an element of the system, which should be used rotary distributor valve. The first surface 11a can be attached to the structure 40 by means of a bearing 42, which provides for limited movement of the surface 11a in the direction parallel to the axis 13 of rotation of the second surface 12A. Accordingly, the first surface 11a can be moved to regulate the gap between the first and second surfaces 11a, 12A.

The first and second surfaces 11a, 12A can be moved towards each other, for example, by means of an elastic element acting on the first surface 11a, and/or by attaching at least one input port 21 to the source of reduced pressure. Thus, the gap between the first and second surfaces 11a, 12A can be controlled by adjusting the bearing force generated by the gas bearing. The second surface 12A can be attached to the structure 40 by means of the rotary bearing 43, which supports the verge surface 12A and provides the possibility of its rotation around the axis 13. Can also be a control device 44 to ensure that the second surface 12A of the rotation at a given speed.

As explained above and shown in figure 2, the gas bearing may have holes 16 made in the first surface 11a. In particular, as shown in figure 2, the holes 16 of the gas bearing can be located along the second ring 52, is placed around the axis 13. In particular, each of the holes 16 can be in the form of channels made in the first surface 11a and passing along the arc of the second ring 52.

As shown, the size of each hole 16 may be the same. However, this is not required. Similarly, it should be understood that it is possible to use any number of holes of the gas bearing. In particular, if necessary, can be performed in one hole, which has, for example, an annular shape. However, the separation of the gas bearing openings distributed on the first surface, can significantly improve the stability of the gap between the first and second surfaces 11a, 12A.

The pressure of the gas coming out of the holes 16 of the gas bearing may be the same. Alternatively, it may be desirable that the pressure for some of the holes 16 differed from the pressure to the other of the holes 16. For example, it may be desirable that the pressure ha is and for holes 16, adjacent to the holes 23 in the first surface 11a, which is connected with a source of reduced pressure, exceed the pressure in the holes 16 adjacent to the holes 23 in the first surface 11a connected to a source of fluid under pressure, or in holes 16, which are not related with the holes 23 in the first surface connected to the input port 47.

If necessary, provide different gas pressures for the holes 16 in the holes of the gas bearing, which should have different pressures, can be connected to separate sources of gas, and/or can be performed valves to regulate the pressure of each of the holes of the gas bearing.

It should be understood that in any case, it may be desirable execution of an adjustable valve, which is connected with each of the holes of the gas bearing to allow fine adjustment of the rotary distribution valve during system setup, which uses the proposed valve. Adjustable valves may constitute, for example, the pressure regulators. They can maintain the constant pressure supplied to the gas bearing, and the absence of its fluctuations due to changes in conditions of submission.

Alternatively or additionally, it may be desirable within the s system, in which the gas pressure in the hole 16 can be adjusted during operation of the rotary distribution valve. Accordingly, the system can be used, for example, shown in figa and 4b. In the system depicted in figa, there are first and second controllable sources 61, 62 gas. Holes 16A, 16b of the gas bearing, which should take place the first gas pressure, is connected with the first controlled source 61 gas, and the holes 16C, 16A, e, which should take place independently adjustable second pressure gas is connected to the second controlled source 62 gas. Both sources 61, 62 can be connected to the controller 63.

Alternatively, as shown in fig.4b, gas supply to all of the holes of the gas bearing can be made using a single source 65 gas. However, the first set of holes 16A, 16b can be connected with the first valve 66 to control pressure, and a second set of holes 16C, 16A, e, which should take place independently adjustable second gas pressure, can be connected with the second valve 67 pressure regulation. In this case, the controller 63 may control the operation of the valves 66, 67 to regulate the pressure in the holes 16 of the gas bearing.

It should be understood that the controller 63 may perform various other functions, e.g. the measures to control the rotation speed of the second surface 12A and to control the execution unit 44 to achieve the specified speed, to control the gap between the first and second surfaces 11a, 12A and, if necessary, to regulate the operation of the gas bearing to maintain the required clearance.

Regardless of whether for regulating the operation of the gas bearing control system or, in this case, the principle of the control system, it may be desirable execution limiter 68 gas flow for each of the holes 16 of the gas bearing. This limiter can be configured to limit the flow of gas coming out of the holes 16, depending on the gas pressure. It can be made in the form of a simple inductor installed in the place of exit of the gas supply lines into the holes 16.

The use of the limiter gas flow also increases the stability of the control gap between the first and second surfaces 11a, 12A. In particular, when increasing the gap between the surfaces of the flow rate of gas increases, which increases the pressure drop in the specified delimiter. In turn, this reduces the pressure acting between the surfaces, which causes the reduction of the gap. It should be understood that the installation of flow restrictors gas can be used to control the gas bearing and its sensitivity to load variations. In addition, it should be understood that the holes of the gas bearing in a variety of the locations can be used limiters of different sizes, especially if the load of the gas bearing in a variety of different locations. This may occur, for example, as a result of differences in the geometry of the holes in the first and second surfaces and their compounds from different sources.

Dynamic stability of rotation of the two surfaces may be a significant factor in the design of the proposed rotary feed connection or rotary valves. In particular, in the absence of sufficient stability may be necessary to limit the speed of rotation of the two surfaces, which, depending on conditions of use, may be unacceptable.

In General, the holes of the gas bearing should be located to ensure the distribution of gas pressure on the surface of the air bearing without the occurrence of dynamic stability. The gas present in the bearing, is compressible, and may occur a situation in which one element varies with respect to another. This phenomenon is called pneumatic hammer.

To maximize the stability of these two surfaces can be accomplished by limiting the gas flow is set as close to the holes of the gas bearing with software to minimize the amount of gas in the area between the specified ogranichitel is m and the hole.

Dynamic stability can also be improved by reducing the gap between these two surfaces. This can increase the effective area, as described above. In addition, when two surfaces are close to each other, between them may form a thin gas film, which provides significant damping of the relative movement of the surfaces. It should be understood that such damping increases stability. However, the smaller the gap between the two surfaces, the harder the required manufacturing tolerances for them, which increases the manufacturing cost of the rotary feed connections or valves and increases operating costs.

The shape, configuration and arrangement of the holes of the gas bearing also affect the stability of the rotation. For example, the location of these holes further away from the axis of rotation of the second surface relative to the first surface increases the resistance. Similarly, use of a larger number of holes having a smaller size, also increases stability. Accordingly, it may be necessary to balance the cost of producing a larger number of holes of the gas bearing and the cost of machining the first and second surfaces at relatively Estrich technological tolerances to provide the opportunity to reduce the clearance between the surfaces.

As shown in figure 2, the second ring 52, which are holes 16 of the gas bearing may be located further from the axis 13 than the first ring 51, which are holes 23, made in the first surface, resulting in a distance from the rotation axis to the connection holes maximum. However, this location can be changed to the opposite. In addition, as the gas holes of the bearing and the hole in the first surface 11a connected to the input ports 21 may be located in more than one ring surrounding the axis 13.

Regardless of its configuration, the rotary input connection or rotary distribution valve can be used in different situations. In particular, it is possible to use the device for processing of the product. In the manufacture of many products to provide information costs to a minimum is used to automate various processes. Similarly, to provide information costs to a minimum can also be used to automate handling processes. Accordingly, the configuration of the device for processing of the product, such as handling of products during production, transportation, supervision and/or inspection, can be an important part of the production system. As shown in figure 3, when izgotovleniya for processing product can be used rotating the input connection or the rotary distribution valve in accordance with this invention.

For example, one, or more, or all output ports 31 may be attached to the holder 45 of the product. Accordingly, the holder 45 can at least periodically flowing to communicate with one or more input ports 21. In particular, if port 21 is connected to a source of reduced pressure, the holder 45, respectively, intermittently flowing communicates with a source of reduced pressure.

The holder 45 product may have a receiving portion 46, the shape of which corresponds to at least part of the product 47. Between the receiving part 46 for the product and the output port 31 can be performed in the channel 48. Thus, when the output port is connected to a source of reduced pressure using a rotary feed connection or rotary distribution valve, the product 47 can be attached to the receiving part 46 due to the impact of reduced pressure.

It should be understood that this configuration can be used in different situations. For example, in a configuration that uses a rotary input connection, the holder 45 may constantly flow communication with a source of reduced pressure. Accordingly, the product 47 can be held securely in the receiving part 46 until it is physically removed from it.

Alternatively or additionally, the holder 45 may COI is to Lisovets together with the rotary valve, in which during a given part of the working cycle of the holder 45 flow communicates with the source of reduced pressure. In this case, the product 47 is held in the receiving part. However, during the other part of the operating cycle of the flowing message holder 45 with a source of reduced pressure may be absent. In this case, the product 47 may fall away from the receiving part 46 of the holder of a product during a specified portion of the operating cycle.

In yet another embodiment, during another part of the operating cycle of the holder 45 may flow to communicate with the other input port connected to a source of overpressure. Excess pressure can be used, for example, to effectively eject the product 47 of the receiving part 46. As a variant, the device for processing of the product can be designed in such a way that the product 47 is eliminated from the receiving part 46 of the holder of the product before attaching the holder 45 to the source of positive pressure. In this case, the source of excess pressure can be used to supply the flow of gas or other fluid medium to the holder 45 to ensure the removal of any contaminants that may remain, for example, in the receiving part 46.

In one specific configuration, the device holder 45 product may be made with the possibility of rotation relative to the second surface at IU is during the retention time of the product 47 in the receiving part 46. This configuration can provide the possibility of establishing a monitoring system, which examines essentially the entire product 47, extending from the receiving part 46 of the holder.

It should be understood that the above device for processing product can be used for different products. For example, this device can be used for processing pharmaceutical products such as pills and capsules.

1. Rotary input connection having one or more output ports (31) and one or more input ports (21), arranged to create a flow of messages between one or more output ports and the specified one or more input ports, and having
the first and second flat surfaces (11a, 12A)made with the possibility of rotation relative to each other and having a corresponding shape, so that, during relative rotation of these first and second surfaces between them can be maintained essentially constant gap, and each of the specified one or more input ports (21) flow communicates with at least one opening (23) on first surface (11a),
each of these one or more output ports (31) flowing communicates with at least one opening (33) on second surface (12A),
moreover, during the rotation of the decree of the data of the first and second surfaces (11a, 12A) relative to each other at least one hole (23) on first surface (11a) at least periodically at least partially overlaps with at least one opening (33) on second surface (12A) to enable the flow of fluid from one to the other,
characterized in that between the first and second surfaces (11a, 12A), there is a gas bearing configured to generate a lifting force between these surfaces.

2. Rotary input connection according to claim 1, in which the said holes (23, 33) in the first and second surfaces are arranged so that during rotation of the first and second surfaces (11a, 12A) relative to each other provides the specified duty cycle flow of messages between the specified one or more input ports (21) and the specified one or more output ports (31).

3. Turning the input connection of claim 1, wherein at least one of the input ports (21) is arranged to connect with a source of reduced pressure.

4. Rotary input connection according to claim 3, in which a gas bearing configured to create a force between these two surfaces (11a, 12A), which balances the net force acting on these surfaces to ensure their convergence and the resulting is soedinenii specified at least one of the input ports (21) with a source of reduced pressure.

5. Rotary input connection according to claim 1, containing a fixing structure (40)designed to maintain the specified connection when it is attached to another component, and the first surface (11a) is attached to the mounting structure (40) in such a way that it does not rotate relative to the specified structure, and a second surface (12A) is attached to the mounting structure (40) for rotation relative to the specified structure and the first surface around the axis (13) of rotation.

6. Rotary input connection according to claim 5, in which at least one of these first and second surfaces (11a, 12A) is attached to the mounting structure (40) can move in a linear direction parallel to the axis (13) of rotation of the second surface (12A) to regulate the gap between the first and second surfaces.

7. Turning the input connection of claim 1, wherein the gas bearing has one or more apertures (16)located on at least one of the first and second surfaces (11a, 12A) and made with the possibility of connection with source (17) gas, the feed gas under pressure above ambient pressure, which uses a rotary input connection to ensure the establishment of a carrier gas stream (18), coming out of the holes of the gas bearing.

. Rotary input connection according to claim 7, in which the gas bearing has openings (16), and the gas is fed to at least two of these holes of the gas bearing with capability of independent regulation of the gas pressure in each of them.

9. Rotary input connection according to claim 7, wherein said gas bearing is configured to connect each of its holes (16) with the corresponding limiter (68) of the gas stream.

10. Rotary input connection according to claim 5, in which the gas bearing has one or more apertures (16)located on the first surface (11a) and made with the possibility of connection with source (17) gas, the feed gas under pressure above ambient pressure, in which you use the rotary distribution valve, to ensure the establishment of a carrier gas stream (18), coming out of the holes of the gas bearing.

11. Turning the input connection of claim 10 which includes the one or more apertures (16) of the gas bearing placed on the ring (52) around the axis (13) of rotation of the second surface (12A).

12. Turning the input connection 11, in which at least one specified hole (16) of the gas bearing is made in the form of a channel running along at least part of the above rings (52).

13. Rotary serves is its connection to item 11, in which the specified at least one opening on the first surface (11a), flow communicates with the specified at least one input port (21), is located along the second ring (51), passing around an axis (13) of rotation of the second surface (12A).

14. Rotary input connection 13, in which the second ring (51) is located closer to the axis (13) of rotation of the second surface (12A)than the first ring (52), on which are located one or more apertures (16) of the gas bearing.

15. A device for processing product containing a rotary input connection according to claim 3 and a source of reduced pressure connected to the specified at least one input port (21), and optionally containing at least one bracket (45) of the product attached to the output port (31) and flowing reported with one of the specified one or more output ports (31),
moreover, the rotary input connection is made so that the output port (31) at least periodically flowing reported with the specified at least one input port (21) on at least a periodic flow of messages holder (45) of the product with the specified source of reduced pressure.



 

Same patents:

FIELD: machine building.

SUBSTANCE: adjustable straight-flow multi-pass throttle includes a housing, inlet and outlet end cover plates, which are connected respectively to delivery and outlet main lines, swivel wheel with actuator, shutoff-control discs with mutually fitted ends and feedthrough openings made for example in the form of sectors separated with jumpers in CLOSED position. One of the discs is rigidly installed relative to the outlet end cover plate and the housing, and the other one is installed in a movable manner with possibility of being turned together with a turning wheel, and discs themselves are pressed to each other with a spring-loaded pressure ring, working edges of holes at least of one of the discs are equipped with grooves performing the functions of flow passage of discs at minimum flow characteristics; at that, depth of the groove is equal to (0.2-0.4)b, where b is width of jumper between holes of discs in CLOSED position.

EFFECT: increasing the stability of maintaining the outlet parameter of a throttle at minimum flow characteristics under conditions of dirty working medium.

4 dwg

FIELD: machine building.

SUBSTANCE: device for manual adjustment of the amount of flowing substance of steam lines includes a throttle housing having an inlet and an outlet. Piston is located eccentrically in the throttle housing and provided with possibility of being rotated about its longitudinal axis. The above piston has the possibility of being brought into action by means of at least one gripping element outside the throttle housing. An eccentric longitudinal drilled hole is made in the above piston. The piston is installed in the eccentrically located drilled hole inside the throttle housing. The piston has running slots to admit O-rings, which are located on the side of the end face. Cross section of the main line is decreased to the specified cross section after rotation through the specified angle. Besides, the amount of flowing substance is kept at minimum level in each position of the piston.

EFFECT: creation of compact device at simplifying the design and low maintenance expenses.

13 cl, 12 dwg

Pressure regulator // 2467375

FIELD: machine building.

SUBSTANCE: invention refers to piping valves and can be used to control the flow rate and pressure of working medium (fluid, gas or steam) in systems of machine-building, chemical, gas industry and other industries. Pressure regulator consists of housing with inlet and outlet branch pipes, discs mounted in it and drive. Housing of pressure regulator is mounted in steam supply pipeline and made in the form of hollow cylinder in the plane of which on its internal surface and symmetrically to longitudinal axis of steam supply pipeline there rigidly fixed are two discs at least with two openings made in each of them for steam passage, and two turning discs mounted on the drive shaft and provided with corresponding openings are connected to them on their outer side. Drive shaft in central part between turning discs has larger diameter with formation of support ends for turning discs, which provide the limit stop for movable discs, and installation of adjusting plates.

EFFECT: increasing valve controllability and providing its long-term and reliable operation.

5 cl, 2 dwg

Valve head // 2434170

FIELD: construction.

SUBSTANCE: valve head comprises a body with an external thread, a check nut, a sealing ring and an overflow window made below the thread in a tubular wall with width of 180 along the circumference. In the body there is a stem with an overflow hole in the tubular wall and sealing rings. It is rigidly connected with the help of a carrier having a movable ceramic orifice, with a throughput hole installed in its end part. In the end part of the body there is a fixed ceramic orifice with a throughput hole and a sealing bush. The throughput hole in the fixed orifice of the locking pair is arranged in the form of a semi-circle, the centre of which is displaced from the centre of the orifice. The throughput hole in the movable orifice is made as a curvilinear figure aligned with a narrower part towards the hole.

EFFECT: improved adjustment capacity is achieved by smooth variation of throughput section in orifices of the locking pair, obtaining the linear change of the medium flow depending on opening of the locking pair throughput hole and the overflow hole in the stem.

2 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: multi-pass straight-flow adjustable throttle consists of case, of inlet and outlet end covers correspondingly connected with pump and outlet mains, of swivel wheel with drive, of inlet disk rotating together with swivel wheel, of outlet disk set stationary relative of outlet cover and case, of relief device consisting of relief cavity between end of outlet cover and end of swivel wheel and connected with pump main by means of channels in inlet cover, case and outlet cover pressure tight interconnected with sealing elements and process plugs, and of compensating cavity made between internal end of swivel wheel and end of stationary disk and connected to outlet main by means of channel made in outlet disk. The relief device is equipped with a dividing element in form of a plunger with packing rings, installed in the channel of the inlet cover and designed to perform axial transfers. Also, the relief cavity and the channels before the plunger are filled with hydraulic fluid, while under-the plunger part of the channel of the inlet cover is connected with the pump main. The process plugs are made as filling connecting pipes.

EFFECT: increased operational reliability of throttle.

1 dwg

Control valve // 2405996

FIELD: machine building.

SUBSTANCE: valve includes two half-cases with flange covers, between which a flat rotary gate is installed with sector channel. The latter is arranged coaxially to sector channels in flange covers. Rotary gate interacts with shaft, which is equipped with coupling and cover interacting with each other by means of ramshorns at the end opposite to liquid outlet from valve. Coupling is connected to shaft by means of splint joint and bears lever key, which is used to rotate gate via shaft and to increase or reduce liquid flow through valve.

EFFECT: reduced intensity of hydraulic shocks, losses of pressure in area of valve and metal intensity.

3 cl, 9 dwg

FIELD: machine building.

SUBSTANCE: invention can be implemented in multi-input taps controlled with one element applied in pneumatic systems of high pressure. The disk pneumatic T-valve consists of a case, of a case cover with a hold down spring rigidly tied with the case by means of a threaded connection, of a selector valve and of a valve switch. The switch is installed in a through axial aperture of the case. The valve is arranged between the hold down spring and the case, has a split connection with a working end of the switch and is designed to perform forced turn around axis of the case at 90. Through cylinder channels are made radially in 90 in the case along circumference with centre on the axis of the case: they are an inlet channel, working the first and the second channels and the channel for air bleeding. The selector valve corresponds to a disk. Shaped identical extensive recesses are made in the body of the disk in cross opposed sectors; the recesses are formed with arcs of circumferences with centre coinciding with centre of the disk. At the turn of the disk at 90 to one or another side of the recess one working channel is connected with the inlet channel, while another is connected with the channel for air bleeding. The case of the valve, the cover and the switch of valve position are made out of Caprolon. The selector valve is made out of graphitised Caprolon.

EFFECT: simplification of valve fabrication and maintenance, expanded facilities for fabrication of dick pneumatic T-valves.

4 dwg

FIELD: machine building.

SUBSTANCE: invention relates to piping accessories and is provided for disk valves of average and high diametres, applied in process lines of heat station, nuclear power plant and petrochemical manufacturing. Valve contains installed in casing stationary saddle with through-pas windows, mobile slide valve, connected to drive spindle by means of draw bar and lever. Slide valve is implemented in the form of separate leaf-gates, fixed on balancing arm and by shape of corresponding to through-pas windows of stationary saddle. Balancing arm is installed on central limit stop, including flat-thrust bearing, taking pressure force of leaves to saddle. Leaves are outfitted by float peripheral compression, implemented from several elements, compressed by springs to saddle and fixed by screws.

EFFECT: reliability growth and durability of valve operation.

1 dwg

FIELD: machine building.

SUBSTANCE: invention refers to adjusting pipeline accessories and is designed for disk valves of medium and big diametres used in process lines of HS (heat stations), AS (atomic stations) and petrochemical production. The valve consists of fixed saddle (4) installed in case (1); the saddle has through profiled openings contacting with slide (5) made with notches; in cylinder (8) of the slide there is installed piston (9) with unloading chamber (12). Reinforcing rib (6) and support (7) are installed in case (1). Cover (13) of slide (5) contacts holding down device (14). Spindle (25) passes through cover (27) of case (1). The valve is equipped with a lever mechanism in form of lever (24) interacting with a universal hinge by means of pin (23); the universal hinge is made in form of three links (22, 20 and 16) and rod (18) connected between them with pins (21, 19 and 17 correspondingly) and secured on slide (5) with finger (15). Horizontal installation of spindle (25) is possible.

EFFECT: increased reliability of operation life of valve due to lever mechanism.

2 cl, 4 dwg

FIELD: mechanical engineering.

SUBSTANCE: valve contains installed in casing (1) immovable saddle (4) with throughput shape windows, contacting to slide valve (5), implemented with openings, in cylinder (10) of which it is installed piston (11) with unloading chamber (15). Intermediate chamber (9) is implemented in the form of groove, located lengthwise the external contact stripe of slide valve (5). Webbing (6, 14) are installed in erosion-resistant glass (8). Leaf spring (17) of high rigidity contact to slide valve (5). Spindle (18) of drive (24) pass through cover (22) of casing (1). Rest (13) is connected to piston (11) and stiffener (6).

EFFECT: increasing reliability and durability of valve ensured by increasing of contact and friction area between saddle and slide valve and stiffening effect of leaf spring and stiffeners, installed in glass.

4 dwg

FIELD: machine building.

SUBSTANCE: device for distribution of liquid or gas medium through independent consuming objects consists of cover with drive and inlet port and of case with outlet ports. A distributing disk with an orifice is installed in the case. During rotation the orifice of the disk alternately coincides with the ports in the case. The distributing disk is made integral with a hollow shaft coupled with the drive and is pressure tight connected to a flange by means of a bellows, thus forming an alternate reservoir. A metering device is installed in the orifice disk; it supplies liquid or gas medium in portions and is electrically tied with a control panel. A return spring and pushers are arranged between the cover and the flange. The spring rests on a ring with low coefficient of sliding friction. The pushers restrict a progressive run of the flange.

EFFECT: expanded functionality of distributing device, metered distribution of fluid medium through independent consuming objects.

1 dwg

FIELD: mechanics.

SUBSTANCE: sanitary water distributor contains a casing with, at least, one water inlet, an outlet and a regulating cartridge placed inside the casing. Water coming through the inlet gets into the cartridge adjusting the water flow to the outlet in compliance with the control lever position. The cartridge lower side has one water inlet and one outlet. Cartridge (26) is arranged inside the support insert (14) with, at least, one through hole (16, 17). The latter communicates, on one side, with the said, at least, one inlet (5, 6) of casing (2) and, on other side, with the said, at least one inlet of cartridge (26). There is an extra through hole (18) communicating, on one side, with the outlet of cartridge (26) and, on the other side, with water distributing space (12). The said space is arranged between the support insert (14) and casing (2) and directs the water flow into the external radius zone of inner space (10) of casing (2). A through space (24) is arranged between the side surface (21) of support insert (14) and lateral surfaces of casing (2). Water flows up to the outlet (49) through space (24).

EFFECT: better performances of the mixer.

8 cl, 7 dwg

FIELD: the adjusting two-disk valve with an unloading arrangement is designed for using in the adjusting pipeline armature.

SUBSTANCE: in the body of the valve there is an immobile saddle with the passing profiled peripheral windows and a central channel in it and a slide. The valve is additionally provided with an analogous immobile saddle and a slide. The latter are installed symmetrically to the first saddle and the slide relatively to the axle of the sockets. The slides are connected between themselves with possibility of their simultaneous turn and possibility of an axle travel relatively to each other by means of the rods. The latter pass through the central channels of the immobile saddles. The unloading chamber is located between the immobile saddles and is formed with the help of a cylinder and a piston. The latter are located on the ends of the rods. The unloading chamber is connected with the pressure cavity of the valve by means of a longitudinal channel. The latter is fulfilled in the rod of one of the slides. Between the cylinder and the piston there is an element for preliminary compression of the slides to the saddles.

EFFECT: increases carrying capacity of the valve.

1 cl, 3 dwg

FIELD: mechanical engineering.

SUBSTANCE: proposed disk valve contains stationary seat with through shaped peripheral ports and central channel installed in housing. Seat is arranged between spool and piston. Spool and piston are nondetachably connected by rod through central hole of seat. Cylinder arranged in housing separates drain and pressure spaces of valve.

EFFECT: improved reliability of valve.

1 dwg

FIELD: mechanical engineering.

SUBSTANCE: proposed disk valve contains stationary seat with through shaped peripheral ports and central channel installed in housing. Seat is arranged between spool and piston. Spool and piston are nondetachably connected by rod through central hole of seat. Cylinder arranged in housing separates drain and pressure spaces of valve.

EFFECT: improved reliability of valve.

1 dwg

FIELD: the adjusting two-disk valve with an unloading arrangement is designed for using in the adjusting pipeline armature.

SUBSTANCE: in the body of the valve there is an immobile saddle with the passing profiled peripheral windows and a central channel in it and a slide. The valve is additionally provided with an analogous immobile saddle and a slide. The latter are installed symmetrically to the first saddle and the slide relatively to the axle of the sockets. The slides are connected between themselves with possibility of their simultaneous turn and possibility of an axle travel relatively to each other by means of the rods. The latter pass through the central channels of the immobile saddles. The unloading chamber is located between the immobile saddles and is formed with the help of a cylinder and a piston. The latter are located on the ends of the rods. The unloading chamber is connected with the pressure cavity of the valve by means of a longitudinal channel. The latter is fulfilled in the rod of one of the slides. Between the cylinder and the piston there is an element for preliminary compression of the slides to the saddles.

EFFECT: increases carrying capacity of the valve.

1 cl, 3 dwg

FIELD: mechanics.

SUBSTANCE: sanitary water distributor contains a casing with, at least, one water inlet, an outlet and a regulating cartridge placed inside the casing. Water coming through the inlet gets into the cartridge adjusting the water flow to the outlet in compliance with the control lever position. The cartridge lower side has one water inlet and one outlet. Cartridge (26) is arranged inside the support insert (14) with, at least, one through hole (16, 17). The latter communicates, on one side, with the said, at least, one inlet (5, 6) of casing (2) and, on other side, with the said, at least one inlet of cartridge (26). There is an extra through hole (18) communicating, on one side, with the outlet of cartridge (26) and, on the other side, with water distributing space (12). The said space is arranged between the support insert (14) and casing (2) and directs the water flow into the external radius zone of inner space (10) of casing (2). A through space (24) is arranged between the side surface (21) of support insert (14) and lateral surfaces of casing (2). Water flows up to the outlet (49) through space (24).

EFFECT: better performances of the mixer.

8 cl, 7 dwg

FIELD: machine building.

SUBSTANCE: device for distribution of liquid or gas medium through independent consuming objects consists of cover with drive and inlet port and of case with outlet ports. A distributing disk with an orifice is installed in the case. During rotation the orifice of the disk alternately coincides with the ports in the case. The distributing disk is made integral with a hollow shaft coupled with the drive and is pressure tight connected to a flange by means of a bellows, thus forming an alternate reservoir. A metering device is installed in the orifice disk; it supplies liquid or gas medium in portions and is electrically tied with a control panel. A return spring and pushers are arranged between the cover and the flange. The spring rests on a ring with low coefficient of sliding friction. The pushers restrict a progressive run of the flange.

EFFECT: expanded functionality of distributing device, metered distribution of fluid medium through independent consuming objects.

1 dwg

FIELD: machine building.

SUBSTANCE: feed swivel joint is proposed, which can represent a rotary distributing valve, and is meant for supply of fluid medium flow from inlet ports to outlet ports at coincidence of the corresponding openings made in the first and the second flat surfaces, which rotate relative to each other, and between which there is a gas bearing intended to create a carrying force between the first and the second surfaces.

EFFECT: enhanced operating reliability.

15 cl, 5 dwg

Water distributor // 2551916

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture, and is intended for the use in water distribution in pressure irrigation systems. The water distributor comprises a distributing housing which is successively switched relative to the smooth surface of the housing, and which by a sealing device is adjacent to the mating surface of the housing. For water distribution the displacing means and the sealing device at the areas of movement with the stepwise movement promote the removal of the distributing housing from the mating surface of the housing.

EFFECT: invention is aimed at the reduction of wear in the area of the sealing device and the mating surface of the housing of the water distributor.

16 cl, 5 dwg

Valve // 2260732

FIELD: valving.

SUBSTANCE: valve comprises housing, inlet and outlet branch pipes with flanges, and movable and unmovable disks with openings. The openings receive common axle. The movable and unmovable disks are provided with shaped flowing ports which are in a contact with each other through face precision working surfaces. The movable disk is mounted for permitting rotation by means of the driving member with respect to the unmovable disk. The face surface of the unmovable disk is provided with the projections arranged over the contour of the flowing ports. The projections are provided with the precision working surface. The valve is provided with additional projections which are interposed between the ports and define hollows connected with each other and outer space. The valve is also provided with the ring projection around the opening for the axle. The face surfaces of the projections are in the plane of the precision working surface.

EFFECT: enhanced reliability.

5 cl, 10 dwg

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