Turbopump for two fluids

FIELD: engines and pumps.

SUBSTANCE: turbopump comprises housing (4) with working chamber (9), shaft (7) with external drive, impeller fitted on shaft (7) and aligned therewith inside said chamber (9). Impeller comprises first and second discs (1, 2) aligned with axial clearance there between and having inlet holes (6) at central area. Impeller has first inlet of fluid (5) for axial feed to axial clearance between said first and second discs (1, 2) via inlet of first disc (1). Impeller has second inlet of fluid for axial feed to axial clearance between said first and second discs (1, 2) via inlet (6) of second disc (2). Besides, it has outlet for discharge of first and second fluids from working chamber (9) periphery. Said impeller comprises extra mid solid disc (3) fitted aligned between discs (1, 2) and with clearance there between and discs (1, 2). OD of mid disc (3) is smaller than OD of discs (1, 2) and larger than that of outer circle on inlets (6) of discs (1, 2).

EFFECT: simple design, lower production and operating costs, power saving, higher reliability.

10 cl, 4 dwg

 

The invention relates to pumps, particularly to centrifugal pumps for injection of two different fluid in the form of gas, vapor and/or liquid. The invention can be used for the purposes of further use of the mixture of two different fluid, for example in the form of a liquid, which is sprayed in the air or other gas to produce steam from a mixture of two different fluid, for separating dispersed particles from gases, air or vapours after mixing with the liquid, followed by the separation from the latter, etc.

The prior art is widely known machine large displacement in the form of various pumps, using as the impeller of the turbine disc wheel.

For example, the famous disc pumps, construction of which includes a housing with a supply of fluid in the Central region and drain the fluid from the periphery and the shaft with the impeller, are accommodated in the housing and including parallel disks with inlet holes [A.S. SU1139890A, publ. 15.02.1985; patent US4403911A, publ. 13.09.1983]. The above-described disk pump is designed to pump only one fluid medium.

The turbo pump, similar to the above pumps, also commonly referred to as friction pumps or beloperone pumps, for pumping the fluid it uses the force of viscous friction is the fluid in the axial gaps between the disks.

Such pumps can be used for mixing two different fluid media, in particular by spraying the liquid into gas. For example, a device for spraying liquid [patent US888091A, publ. 19.05.1908], in which the liquid is fed in the axial direction through the nozzle in the inlet drives the impeller under the action of centrifugal force, the liquid together with the ambient air is drawn into the axial clearances between rotating disks, diverges to the periphery and is sprayed in the tangential direction, going through lithography output. The disadvantage of such devices is the need for additional devices to force the fluid.

Known construction in which the disk impeller includes two disks, in the axial gap between which additionally perform radial vanes. For example, such a construction is used in known centrifugal pump, which is used for mixing two fluid, namely, liquid and gas for dissolving the last [patent US5385443A, publ. 31.01.1995]. In this known pump, the liquid is pumped into the inlet hole made in one disk of the impeller and the gas is fed directly into the axial gap between the disks of the impeller through the gas supply tube, which passes through the impeller shaft and Yes is it out of perpendicular and outlet ends in the axial gap between the disks. This design is relatively complex, since it requires the presence of seals on the inlet gas tube, as it passes through the rotating shaft. In addition, it requires a forced feed gas due to the energy of the external source.

Know the use of pumps, similar to the above, which are used for wet cleaning of gases, when a gas to be treated from the dispersed particles such as dust, is first mixed with a liquid that is used as a separating agent, using disk of the impeller, and then the cleaned gas is separated from liquid by using appropriate means. For example, the known pump for wet cleaning of dusty gas dust containing centrifugal disk impeller with vanes in the axial gap between the disks, which is mounted inside the housing, a nozzle for supplying cleaning liquid to the outer surface of the impeller or axial feed into the inlet of one of the disks of the impeller, the outlet of the axial gas flow into the inlet of one of the disks of the impeller and the output tangential outlet [patent US4157249A, publ. 05.06.1979]. This pump requires a forced flow of cleaning fluid through the nozzle, which determines its relative complexity and increased energy costs.

As a prototype of the chosen one and is similar to the turbo pump, used for wet purification of gases, in the form of a known device for removing suspended solids from the gas [patent EP0096149B1, publ. 12.21.1983]. This device includes the following elements: a housing with a working chamber; a shaft driven in rotation from an external drive and included in the working chamber; an impeller mounted coaxially on the shaft within the working chamber and including multiple disks with radial vanes at their peripheral areas, which are arranged coaxially to each other with an axial gap between them and have the inlet in the Central region; the inlet gas to the axial feed gas to be purified in the axial clearances between the discs through the inlet openings of the disks from one side of the impeller; input water pipe passing through the gas inlet pipe for axial water in the axial gap between the disks through the inlet holes of the same side of the impeller; and an output lithobates form for removal of gas and water from the periphery of the working chamber after passing through the axial gaps between the disks and the subsequent separation of the purified gas from the water. A disadvantage of this device is the need for additional devices for forced water flow in the inlet water pipe, which complicates the design and increases the cost of energy.

The technical task of the present is subramania is to simplify the design of the turbo pump with centrifugal disk impeller, used for injection of two fluid at the same time, and, consequently, reduce the cost and increase reliability. Another solvable technical problem is to reduce energy consumption and operating costs when using a turbopump.

To solve technical problems prompted the turbopump for two fluid media, comprising: a housing with a working chamber, a shaft included in the working chamber and is arranged to bring the rotation of the external gear; an impeller mounted coaxially on the shaft within the working chamber and including at least first and second disks, arranged coaxially to each other with an axial gap between them and having inlet openings in the Central area; the entrance to the first fluid to the axial feed of the first fluid in the axial gap between the first and second disks through the inlet of the first disk; a second fluid environment for axial feed of the second fluid in the axial gap between the first and second disks through the inlet; an outlet for venting the first and second fluid medium from the peripheral region of the working chamber after passing through the axial gap between the first and second disks. What's new is that the impeller further comprises at least one intermediate disc located coaxially first the mu and second disks with axial clearance between it and the first and second disks, accordingly, the external diameter of the intermediate disk is made smaller than the outer diameter of the first and second disks and larger diameter outer circumference of the input apertures of the first and second disks, the intermediate disk is made of a solid, i.e. without the inlet, and the inlet of the second fluid is made with the possibility of axial feed of the second fluid through the inlet of the second disk.

Thus, the simple design of the impeller proposed turbopump as if combines three stages: the first stage in the form of an axial gap between the first disk and the intermediate disk performs the function of retracting from the outside to the inside of the impeller of the first fluid; a second stage in the form of axial clearance between the second disk and the intermediate disk performs the function of retracting from the outside to the inside of the impeller of the second fluid; and the third stage in the form of an axial gap between the first and second disk with the diameter of the outer circumference of the intermediate disk performs the function of mixing the first and second fluid media, contributes to a better involvement in the impeller outside of the fluid environments, whose kinematic viscosity and/or density is lower, and pumps the mixture of fluid in the direction of the exit.

The impeller contains two or more intermediate disk, located the axial gap between, one of the intermediate discs are made solid, and the other intermediate the disks or the disk has an outer diameter less than the outer diameter of the first and second disks and larger diameter outer circumference of the input apertures of the first and second disks, and has an inlet opening in its Central region.

Here, the shape of the inlet openings in the first and second disks, as well as in the intermediate disk can be selected from the group of the Central circular hole; a circular slot, aligned to the impeller; a lot of holes arranged with equal angular increments, the circle centers are aligned corresponding to the impeller. The outer diameters of the intermediate discs are made equal.

Axial clearance between the first and second disks may be made tapering in the radial direction to the periphery of the impeller since at least the diameter equal to the outside diameter of the intermediate disk. In this case, the first and/or second disk may have a disc shape. The intermediate disc may also have a disc shape.

Also the axial gap between the first and second disks may be performed first tapering in the radial direction since at least the diameter equal to the outside diameter of the intermediate disk, and then extending to the periphery of the impeller.

In the particular case,the use of the claimed turbopump as a device for wet gas cleaning the design has the following features: the shaft is made vertical; working chamber is in the form of in the form of a stepped cylinder with a vertical axis, coaxially to the shaft, and has an upper stage and lower stage impeller housed in the lower level of the working chamber; the diameter of the lower level of the working chamber is made larger than the diameter of the upper level of the working chamber; the diameter of the upper level of the working chamber is made smaller than the outer diameter of the first and second disks and more outer circumference of the inlet of the first disk, the first disk is located below the second drive; the entrance to the first fluid medium is an entrance for liquid located in the lower level of the working chamber and made in the form of axial pipe, the upper end of which is connected to the inlet of the first disk, and the lower end of which is connected with a source of fluid; a second fluid is a sign for gas, located in the upper part of the working chamber and is connected with the inlet of the second disk; an outlet for venting the first and second fluid includes an outlet for fluid and an outlet for gas and an outlet for liquid in the lower part of the lower level of the working chamber, and an outlet for gas is located in the upper part of the upper level of the working chamber. In this particular case, the upper part of the upper-stage slave is whose chambers are open and acts as input for gas and an exit for gas.

Also, in another particular case, the outlet for removal of the first and second fluid medium can be performed tangential, for example, lithopanes.

Further embodiments of the invention will be described in more detail based on examples with reference to the attached drawings, on which:

Fig. 1 is a view in longitudinal section of the turbopump is used as a device for wet gas purification from impurities according to the first example embodiment of the invention;

Fig. 2 is a view in longitudinal section of the turbopump is used as a device for wet gas purification from impurities according to the second embodiment of the invention;

Fig. 3 is a view in longitudinal section of the turbopump used for injection of two fluid for various application purposes according to a third example embodiment of the invention; and

Fig. 4 is a view in transverse section of the turbopump shown in Fig. 3.

Example 1

As shown in Fig. 1, the turbopump is used as a device for wet gas purification from impurities according to the first embodiment of the present invention, includes a housing 4 with the working chamber 9. The working chamber 9 is made in the form of vertical speed of the cylinder, open at the top and closed bottom, and the bottom level of the working chamber 9 has a diameter greater than the diameter of the upper level of the working chamber 9, by performing on the inner wall of the working chamber annular protrusion 10.

In the working chamber 9 from the top part of the shaft 7, which is coaxial to the working chamber 9 is driven in rotation from an external actuator (not shown). The vertical axis of rotation of the shaft 7 coincides with the vertical axis of the working chamber 9.

At the lower end of the shaft 7, coaxially him pinned impeller consisting of the first disk 1, the second disk 2 and the intermediate disk 3 is arranged with axial gaps between them, respectively. In example 1, all discs 1-3 are made smooth, and the first and second disks 1 and 2 is planar, i.e. lying in planes perpendicular to the axis of the shaft 7. The outer diameters of the first disk 1 and the second disk 2 is made equal, and the outer diameter of the intermediate disk 3 is about half the outer diameter of the first and second discs 1 and 2. The impeller is mounted with radial clearance relative to the cylindrical inner wall of the working chamber 9 and with an axial clearance relative to the inner walls of the annular protrusion 10. Discs 1-3 impeller rigidly connected with the shaft 7 and/or to each other by means of suitable connecting elements, providing sufficient rigidity of the impeller and is well known from the prior art.

In the center of the first disk 1 is made of a round entrance hole diameter is made smaller than the outer diameter of the intermediate disk 3 is equipped with an inlet for the liquid is, made in the form of pipe 5, the lower end of which is immersed in a tank of liquid 8. The tank with the liquid 8 is arranged to maintain a constant liquid level by feeding fluid from an external source, for example, by returning the liquid used for cleaning gas after the filter (not shown). The surface of the intermediate disk 3 facing the second disk 2, is planar, and the surface facing the first disk 1 has a conical fairing in the center. The outer diameters of the first disk 1 and the second disk 2 is made equal, and the outer diameter of the intermediate disk 3 is about half the diameter of these disks.

In the Central area of the second disk 2 made its entrance aperture 6 in the form of an annular slit, coaxially to the second disk 2 and intended for entrance to the impeller contaminated gas through the upper open part of the upper level of the working chamber 9. The outer diameter of the annular slit is made smaller than the outer diameter of the intermediate disk 3.

The turbopump according to example 1 is as follows.

The shaft 7 impeller is put into rotation by means of an external drive. Initially, the fluid from the reservoir with the liquid 8 can be forcibly lodged inside the impeller through the pipe 5 through appropriate means at least t of the K, to fill the axial gap between the first disk 1 and the intermediate disk 3. Further, the forced flow of liquid from the reservoir with the liquid 8 in the impeller through the pipe 5 is not required.

During the rotation of the impeller due to the centrifugal force in the axial clearances between the discs 1-3 vacuum is created, the gradient of which is directed radially outward of the impeller.

In particular, the fluid from the reservoir with the liquid 8 by vacuum in the axial gap between the first disk 1 and the intermediate disk 3 and then in the axial gap between the first and second disks 1 and 2 of the impeller is first drawn into the axial gap between the first disk 1 and the intermediate disk 3 through the pipe 5 and enters the axial clearance between the first and second disks 1 and 2, moving to the periphery.

At the same time, due to the vacuum inside the impeller, in particular due to the underpressure in the axial gap between the second disk 2 and the intermediate disk 3 and then in the axial gap between the first and second disks 1 and 2, the contaminated gas to be treated is drawn from the upper open part of the upper level of the working chamber 9 through the inlet 6 in the axial gap between the second disk 2 and the intermediate disk 3 and enters the axial clearance between the first and second disks 1 and 2, moving to the periphery where it mixes with the contaminated gas with the formation of gas in the liquid mixture, in which impurities pass into the liquid phase, thereby purifying the gas from the dispersed particles and other contaminants. Gas-liquid mixture leaving the impeller in the tangential direction, hits the inner wall of the lower level of the working chamber 9, while the liquid phase with dirt flows down along the inner wall of the working chamber 9 in its lower part, where it is removed out for cleaning, and the cleaned gas flows through the axial gap between the second wheel 2 and the annular protrusion 10 in the upper working chamber 9 and rises along the inner wall up, going into the atmosphere. The annular protrusion 10, which allows the purified gas to pass into the upper working chamber 9, at the same time prevents the passage in the direction of fluid with dirt.

Feeding the liquid reservoir with the liquid 8 can be carried out due to return after treatment of the condensed liquid.

As the liquid can be water or any suitable liquid absorbent cleaning composition.

At high speeds of rotation of the impeller, the liquid can turn into the axial gap between the first and second disks 1 and 2 in pairs with the formation of the vapor-gas mixture, which improves the absorption of impurities in the liquid phase. Gas-vapor mixture is condensed on the inner wall of the bottom of the staircase is Yeni working chamber 9, therefore, the process of separation of the liquid phase contamination from the clean gas is the same as described above.

Example 2

Design and principle of operation of the turbopump for the two fluid according to example 2 similar to that described in example 1, with some differences described below.

The second disk 2 has a disc shape, i.e. is made conical, where the angle of inclination of the generatrix of the cone to the plane perpendicular to the axis of the shaft is acute. Entrance to gas 6 of the second disk 2 is made in the form of a Central circular hole through which the center passes the shaft 7. The surface of the intermediate disk 3 facing the second disk 2 also tapered at the same angle of inclination of the generatrix of the cone to the plane perpendicular to the axis of the shaft, and the second disk 2. Because of this, the axial clearance between the second disk 2 and the intermediate disk 3 in this example is constant. Conversely, the axial gap between the first and second disks 1 and 2 is tapered in a radial direction at an acute angle.

In General, all of the above clearances between the discs 1-3 can be permanent or narrowing or expanding depending on the target destination and the desired characteristics of the turbopump.

When determining the amount of axial clearance can be used the following relations.

Settling the first gap between the first disk 1 and the intermediate disk 3 can be chosen so to the area of the formed annular cross-section of this axial clearance increased with increasing radius and satisfy a condition:

R·h>d2/2, where R is the current radius of the axial gap, h is the axial gap, d is the diameter of the Central inlet of the first disk 1 (here also the diameter of the pipe 5).

Axial clearance between the first and second disks 1 and 2 can be chosen so that the area of the formed annular cross-section of this axial clearance increased with increasing radius and satisfy a condition:

R·h>D2+d2)/2, where R is the current radius of the axial gap, h is the axial gap, d is the diameter of the Central inlet of the first disk 1 (here also the diameter of the pipe 5), D is the diameter of the Central inlet of the second disk 2.

Example 3

Design and principle of operation of the turbopump for the two fluid according to example 3 similar to those described in examples 1 and 2 with a number of significant differences below.

The shaft 7 and the working chamber 9 of the housing 4 of the turbopump have the horizontal axis, while the working chamber has a simple cylindrical shape, i.e. without separation steps of different diameters. In addition, the housing 4 is equipped with a tangential exit 13.

In addition to the first and second disks 1 and the intermediate disk 3, there are two additional intermediate disk 11 mounted between the first disk 1 and about autoclam disk 3, and between the second disk 2 and the intermediate disk 3, respectively. Unlike the intermediate disk 3 made of a solid, additional intermediate disks 11 have a Central inlet. All intermediate discs 3 and 11 have the same outer diameter.

Here, the axial gap between the first disk 1 and related additional intermediate disk 11, and between this additional intermediate disk 11 and the intermediate disk 3 are the same and depend, in particular, on the properties of the first fluid flowing into the impeller through the inlet of the first disk 1. Accordingly, the axial gaps between the second disk 2 and related additional intermediate disk 11, and between this additional intermediate disk 11 and the intermediate disk 3 are the same and depend, in particular, on the properties of the second fluid flowing into the impeller through the inlet hole of the second disk 1.

Additionally, the axial gap between the first and second disks 1 and 2 first, a few tapers in the radial direction starting from a diameter equal to the outside diameter of the intermediate disk 3 and 11, and then extends toward the periphery, resembling in cross-section the shape of a Laval nozzle. In addition, in the axial gap between the first and second disks 1 and 2 at their periphery to perform the received radial blades 12. This impeller can contribute to a more efficient operation.

In this example 3, the inlet of the first disk 1 is intended for submission to the inside of the impeller of the first operating environment and the inlet of the second disk 2 is intended for submission to the inside of the impeller of the second working environment. As the first and second working medium may be any fluid environment depending on the destination device, in particular a gas, vapor, liquid, or combination thereof. The turbopump according to example 3 can be used for various purposes, for example when used as the first operating environment of the air, and as the second working medium - water, can be implemented functions, for example, moisture or air purification.

Unlike examples 1 and 2 when the turbopump according to example 3, each working environment is drawn into the impeller through two axial gap: first, the working medium is drawn through the axial gap between the first disk 1 and the adjacent additional intermediate disk 11 and through the axial gap between this additional intermediate disk 11 and the intermediate disk 3; and, accordingly, the second working medium is drawn through the axial gap between the second disk 2 and the adjacent additional intermediate disk 11 and through the axial gap between this additional Prohm is filling the disk 11 and the intermediate disk 3.

Additionally, when the turbopump according to example 3, the yield of the mixture of the first environment and the second environment is carried out from the working chamber 9 in the tangential direction through the tangential outlet 13.

It should be understood that the above examples are used only for illustration purposes, the possibility of implementation of the present invention and some of its advantages and these examples do not limit the scope of legal protection provided in the claims, the expert in this area is relatively simply is capable of other variants of the invention without departing from the invention within the scope of legal protection.

1. The turbopump for two fluid media, comprising: a housing with a working chamber, a shaft included in the working chamber and is arranged to bring into rotation from the external drive, the impeller mounted coaxially on the shaft within the working chamber and including at least first and second disks, arranged coaxially to each other with an axial gap between them and having inlet openings in the Central area, the entrance to the first fluid to the axial feed of the first fluid in the axial gap between the first and second disks through the inlet of the first disk, the second input of fluid to the axial feed of the second fluid environment in the axial gap between the first and second drives through built the f hole, the outlet for removal of the first and second fluid medium from the peripheral region of the working chamber after passing through the axial gap between the first and second discs, wherein the impeller further comprises at least one intermediate disc located coaxially to the first and second disks with axial clearance between it and the first and second disks, respectively, and the outer diameter of the intermediate disk is made smaller than the outer diameter of the first and second disks and larger diameter outer circumference of the input apertures of the first and second disks, the intermediate disk is made solid, and the inlet of the second fluid is made with the possibility of axial feed of the second of fluid through the inlet of the second disk.

2. The turbopump according to claim 1, wherein the impeller includes two or more intermediate disk located with axial clearance between one of the intermediate discs are made solid, and the other intermediate the disks or the disk has an outer diameter less than the outer diameter of the first and second disks and larger diameter outer circumference of the input apertures of the first and second disks, and has an inlet opening in its Central region.

3. The turbopump according to claim 2, characterized in that the outer diameters of the intermediate discs are made equal.

4. The turbopump according to claim 1, trichosis fact, the axial gap between the first and second disks are made tapering in the radial direction to the periphery of the impeller, since at least the diameter equal to the outside diameter of the intermediate disk.

5. The turbopump according to claim 4, characterized in that the first and/or second disc has a disc shape.

6. The turbopump according to claim 5, characterized in that the intermediate disc has a disc shape.

7. The turbopump according to claim 4, characterized in that the axial clearance between the first and second disks made first tapering in the radial direction, since at least the diameter equal to the outside diameter of the intermediate disk, and then extending to the periphery of the impeller.

8. The turbopump according to any one of claims 1 to 7, characterized in that: the shaft is made vertical, the working chamber is made in the form, in the form of a stepped cylinder with a vertical axis, coaxially to the shaft, and has an upper stage and lower stage impeller housed in the lower level of the working chamber, the diameter of the lower level of the working chamber is made larger than the diameter of the upper level of the working chamber, the diameter of the upper level of the working chamber is made smaller than the outer diameter of the first and second disks and more outer circumference of the inlet of the first disk, the first disk is located below the second disk, the inlet of the first fluid is a sign of dsjdqostv, located in the lower level of the working chamber and in the form of axial pipe, the upper end of which is connected to the inlet of the first disk, and the lower end of which is connected with a source of fluid, the inlet of the second fluid is a sign for gas, located in the upper part of the working chamber and is connected with the inlet of the second disk, the outlet for removal of the first and second fluid includes an outlet for fluid and an outlet for gas and an outlet for liquid in the lower part of the lower level of the working chamber, and an outlet for gas is located in the upper part of the upper level of the working chamber.

9. The turbopump of claim 8, characterized in that the upper part of the upper level of the working chamber is made open and acts as input for gas and an exit for gas.

10. The turbopump according to any one of claims 1 to 7, characterized in that the outlet for removal of the first and second fluid medium is made tangential.



 

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Turbo-pump unit // 2459118

FIELD: engines and pumps.

SUBSTANCE: unit contains pumps of oxidiser and fuel with spline joined shafts, turbine wheel is fastened on one of shafts. Unit contains dummy piston of automatic unloading machine, the piston is combined with the main propeller disk of one of pumps. Unloading machine is restricted by radial seal in peripheral part of the main disk and by control axial slot near propeller hub. Ball bearing of this pump is designed with outer ring installed in housing with axial gap, ball bearing of the second pump is designed with axial stop located in housing with gap along butt end of ball bearing outer ring. Shaft of one pump with backing butt-end rest on backing butt-end of shaft of the second pump. Gaps along butt-ends of axial stop of outer ring of ball bearing of pump without unloading machine are designed larger than corresponding axial gaps along butt-ends of outer ring of ball bearing of pump with unloading machine.

EFFECT: improving efficiency factor of turbo-pump unit and enhancing pump anticavitation properties.

3 cl, 3 dwg

Hydraulic pulsator // 2457367

FIELD: machine building.

SUBSTANCE: hydraulic pulsator comprises feed branch pipe 1, guide vanes 2, vaned impeller 7, pressure branch pipe 21, discharge branch pipe 22, radial and axial bearings for impeller shaft 23 to run in.Vanes and channels of guide vanes 2 are arranged in mutually shifted sectors so that vanes 5 forming pressure channels are arranged above drain channels 3 formed by vanes 3. Impeller 7 incorporates main and supplementary vanes that form drain and pressure channels 11 and 15, respectively, arranged in sectors shifted in height.

EFFECT: simplified design, higher reliability and efficiency.

2 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: pump includes bodies 8, 26, 28, centrifugal impeller 2 with hub 3, which is installed on shaft 1, and screw 15. Shaft 1 is installed in bearing 7 protected with seal 40. Inside hub 3 on bearings 10, 11 there is installed intermediate shaft 9 so that a gap is formed. Inner shaft 12 having axial non-through hole 34 is formed inside intermediate shaft 9 on bearings 13, 14 so that a gap is formed. On the end of shaft 12, on the pump inlet side there installed is screw 15, and impeller 16 of hydraulic turbine 17, which is installed inside shaft 1, is fixed on opposite end. On shaft 9, on the inlet side between screw 15 and impeller 2 there installed is screw 19, and on the other end - impeller 20 of hydraulic turbine 21. Rear seal 31 under which discharge cavity 32 is made is provided on impeller 2. Shaft 1 is hollow and has front, middle and rear cavities 23, 24 and 25. Hydraulic turbine 17 is installed between cavities 24, 25 and hydraulic turbine 21 is installed between cavities 24, 23. Inner thrust bearing 14 is installed inside nozzle assembly 22 of hydraulic turbine 21. Cavity 32 is connected through hole 42 made in shaft 1 to cavity 25. In hub 3 there made are through holes 33 connecting cavity 23 to cavity 6 of impeller 2.

EFFECT: improving cavitation properties of pump and providing unloading of axial forces of inner and intermediate shafts.

3 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: pump includes body, centrifugal impeller 2 with hub 3, which is installed on shaft 1, and screw 15. Shaft 1 is installed in the main bearing 7 protected with seal 40 so that cavity 41 is formed between them. Inside hub 3 on bearings 10, 11 there is installed intermediate shaft 9 so that a gap is formed, and inner shaft 12 having axial non-through hole 34 is formed inside intermediate shaft 9 on bearings 4, 13 so that a gap is formed. On the end of shaft 12, on the inlet side there installed is screw 15, and impeller 16 of hydraulic turbine 17, which is installed inside shaft 1, is fixed on opposite end. On shaft 9, on the inlet side between screw 15 and impeller 2 there installed is screw 19, and on the other end - impeller 20 of hydraulic turbine 21. Seal 31 under which discharge cavity 32 is made is provided on impeller 2. Shaft 1 is hollow and has front, middle and rear cavities 23-25. Hydraulic turbine 17 is installed between cavities 24, 25 and hydraulic turbine 21 is installed between cavities 23, 24. Bearing 4 is installed inside nozzle assembly 22 of hydraulic turbine 21. Discharge cavity 32 is connected through hole 45 in shaft 1 to cavity 24. Cavity 41 is connected through channel 42 to pump outlet and to cavity 25. In hub 3 there made are holes 33 connecting cavity 23 to cavity 6 of impeller 2.

EFFECT: improving cavitation properties of pump and providing unloading of axial forces of inner and intermediate shafts.

4 cl, 4 dwg

FIELD: process engineering.

SUBSTANCE: invention is intended for use in chemical industry, agroindustrial complex, construction, etc. Accelerator comprises material feeder, accelerating nozzle with rotary drive composed of two coaxial hollow inner and outer truncated cones with their larger bases set downward, inner cone being connected with said feeder. Nozzle tubes are arranged at nozzle lower part, inner tubes being connected to inner hollow truncated cone while outer ones are connected to outer truncated cone. Note here that circular air chamber is arranged above the nozzle with vertical pipes arranged in circular chamber between hollow truncated cones connected thereto. Note here that air direction blades are mounted at outer cone inner surface to feed air to outer radial nozzle tubes with outer conical ends.

EFFECT: efficient acceleration, simplified design and power savings.

2 dwg

Rotary mixer // 2496561

FIELD: process engineering.

SUBSTANCE: invention relates to mixing of loose materials and may be used in feed mill, food and chemical industries. Rotary mixer comprises: Vertical cylindrical casing with taper base converging downward, perforated guides, cover furnished with feed pipe and bearing assy for shaft to run therein. Conical rotor is fitted on mixer shaft and provided with angular turbulence promoters arranged at rotor inner surface, their angle and length being different. Scattering disc is fitted at rotor outer surface.

EFFECT: higher process efficiency.

2 cl, 2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to devices designed to continuously prepare mixes of loose materials bearing mechanical mixes and may be used in food and chemical industries, agriculture etc. Rotary mixer comprises: vertical conical case with discharge branch pie arranged at its bottom, bearing assembly wherein the shaft runs, and cover with loading branch pipe. Rotor made up of disc and hollow truncated cones arranged one after another. Taper blade with four vanes is arranged inside inner cone base. Four staggered dispersing blades are arranged on top edges on central and outer cones. Discharge vanes are fitted on said shaft.

EFFECT: higher efficiency of mixing and dispersing.

2 dwg

Centrifugal mixer // 2455058

FIELD: process engineering.

SUBSTANCE: invention relates to continuous mixing of powder materials, and may be used in chemical, pharmaceutical and other industries. Centrifugal mixer comprises: vertical tapered case with discharge branch pipe arranged at its bottom, bearing assembly with shaft running therein, and cover with discharge branch pipe. Rotor is fitted on the shaft. Said rotor is made up of disk supporting hollow cones with deflectors and discharge vanes secured thereon. Deflectors are made up of separate identical-size elements of torus staggered on different cones along n edges of smaller bases.

EFFECT: higher efficiency with no additional power consumption.

2 dwg

Mixer // 2433860

FIELD: process engineering.

SUBSTANCE: invention relates to mixers used in chemical industry. Proposed mixer comprises casing, rotor and stator made up of flat coils, loading and discharging branch pipes, and drive of rotation. Rotor and stator coils represent spirals of Archimedes. Stator coils are arranged mirror-like relative to rotor coils. Rotor in coil plane is perforated. Rotor coil height-to-stator coil height ratio makes 4:1.

EFFECT: intensified mixing, reduced sizes.

4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to grinding and may be used in dispersion of heterogeneous suspensions to make crystalline round particles to be used in composite compounds. Apparatus comprises housing accommodating stator and radially wavy surface rotor. Stator disk is rigidly secured to housing and has its radially wavy surface facing rotor while rotor disk is rigidly secured to housing and has its radially wavy surface facing stator. Stator and rotor surface wave angle makes 5 to 25 degrees while gap between stator and rotor makes 5 to 15 mm. Suspension flows from mixing apparatus into rotor apparatus suction branch pipe, between rotor and stator and, via outlet branch pipe, flows back into apparatus. Suspension may be aqueous and in organic solvent. Rotor rpm, rotor and stator diameters are selected to ensure suspension turbulent flow between rotor and stator and Reynolds number exceeding 14000.

EFFECT: round particle crystalline substances.

3 cl, 2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to device intended for mixing heterogeneous and homogeneous systems "fluid-solid particles", "fluid-fluid" and may be used in chemical and food industries. Rotor-disk homogeniser comprises housing with feed and discharge branch pipes that accommodate aligned perforated rotor and stator disks. Each hole of rotor and stator disks represents a disk segment truncated by two concentric circles. Area of aforesaid holes and their arrangement obey the claimed set of equations.

EFFECT: reduced pulsations on treated medium flow in apparatus, reduced wear of movable parts and rotor vibration.

3 dwg

Axial mixer // 2414286

FIELD: process engineering.

SUBSTANCE: invention relates to axial mixers intended for grinding and mixing heterogeneous systems "fluid-solid particles" and may be used in chemical and food industries, etc. Axial mixer comprises housing with feed and discharge branch pipes that accommodates perforated disks of rotor and stator. Perforated holes are arranged radially, hole sizes and location are governed by certain set of equations.

EFFECT: higher efficiency of grinding and mixing.

2 dwg

Homogeniser // 2414285

FIELD: process engineering.

SUBSTANCE: invention relates to device intended for mixing heterogeneous and homogeneous systems "fluid-solid particles", "fluid-fluid" and may be used in chemical and food industries. Disperser comprises housing with feed and discharge branch pipes that accommodate aligned perforated rotor and stator disks. Rotor and stator disks have two lines of concentric holes, each representing a disk segment truncated by two concentric circles. Rotor first line of holes is displaced relative to second line by angle φ, while area of rotor and stator disks holes and their arrangement obey definite set of equations. Note here that area of holes on both disks are equal.

EFFECT: reduced vibration of rotor and wear of moving parts.

3 dwg

Disperser // 2414284

FIELD: process engineering.

SUBSTANCE: invention relates to device intended for mixing heterogeneous and homogeneous systems and may be used in chemical and food industries etc. Disperser comprises housing with feed and discharge branch pipes that accommodate aligned perforated rotor and stator disks. Each hole of rotor and stator disks represents a disk segment truncated by two concentric circles. Area of aforesaid holes and their arrangement obey the claimed set of equations.

EFFECT: higher efficiency of mixing heterogeneous and homogeneous systems "fluid-solid particles", "fluid-fluid".

2 dwg

Centrifugal mixer // 2246343

FIELD: food and chemical and other industries.

SUBSTANCE: the invention concerns to devices for continuous preparation of mixtures of loose materials and may be used in food, chemical and other industries. The centrifugal mixer of loose materials contains a vertical cylindrical body, a cover on which there is a feeder with loading branch-pipes, a driving shaft with fixed on it unloading blades and a rotor made in the form of a disk with the fixed to it and concentrically located hollow truncated cones, at which the height and angle of inclination of the generatrix to the base are increasing from the central part to the periphery. On the effective surfaces of the internal and middle cones there are windows, which from below are limited by a surface of the disk. On the internal surfaces of the middle and external cones there are the guiding blades installed as in the form of a spiral and having a number of apertures and a profile of an arc of a circle. Due to that it provides a significant rarefication of the advancing flows, a contour of the reverse recirculation of the flows of the materials is forming, a number of dead zones in different parts of the rotor decreases, additional turbulization to the mixed components that promotes the best interpenetration of particles.

EFFECT: the invention ensures intensification of mixing process, rarefication of advancing flows, decrease of the number of the dead zones in the different parts of the rotor, additional turbulization of mixed components.

2 dwg

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