Device for spraying liquid

 

(57) Abstract:

The invention relates to a device for spraying liquids, can be used for watering garden plots, greenhouses, greenhouses and so on; car washing; create water protection devices fire, estragaste; ornamental fountains; shower faucets. Due to the fact that the internal camera of the device communicates with the internal cavity of the cap by not less than two uniformly distributed around the circumference of the core is inclined relative to the generatrix of the outer cylindrical surface of the core grooves having cross-sections or incomplete segments with chords, spaced from the axis of the core at the same distance greater than the radius of the Central hole of the nozzle, or the shape of a circular sector with radius of the inner arc greater than the radius of the Central hole of the nozzle is achieved the ability to control the cone angle of the spray fluid, reducing the loss of energy swirling flow, which increases the area of the spray. 4 C.p. f-crystals, 3 ill.

The invention relates to a device for spraying liquids and can be used for irrigation is of arniko; car washing; creation of water protection; fire extinguishing devices, estragaste; ornamental fountains; shower faucets.

There are known various devices for spraying liquids, including those in design which uses the core or swirl with grooves on the outer surface [1-5]. The main function of a parameter characterizing the operation of the atomizer, is the quality of the resulting cone of sprayed fluid all over the adjustment range of the cone angle of the spray. Lack of sprayers of this type, affecting the quality of the generated cone of sprayed fluid is determined by the peculiarities of the structural design of these devices increased misalignment of the two most important elements arranged in the inner chamber of the body core, which carries the winding flow of the working fluid, and the holes in the nozzle, which forms a cone of spray, and high energy loss fluid flow in the swirl and the nozzle channel.

The device proposed in patent [5] is the closest to the claimed subject matter of the invention and therefore accepted by the authors for the prototype. It n is anchialine involute grooves of rectangular shape. The disadvantage of this technical solution are, firstly, increased misalignment of the holes of the nozzle and core; secondly, the increased loss of energy swirling fluid flow in the nozzle orifice due to the presence of a cylindrical section in the critical part, which reduces the radial flow velocity at the outlet, and hence the size of the spray.

To ensure the effective operation of the spray (control the cone angle of the spray fluid; improve the quality of the formed cone of sprayed fluid; reducing the loss of energy swirling flow of the working fluid), the authors propose a technical solution lies in the fact that the device for spraying a liquid, comprising a housing with an internal chamber and a nozzle for supplying a working fluid that is installed with the side end surface of the housing core is in the form of a swirl with grooves on the outer cylindrical surface and the nozzle in the form mounted on the casing of a hollow cap with a Central outlet at the bottom, inner chamber of the housing communicates with the internal cavity of the cap by not less than two uniformly distributed over OCD the first surface of the core, and having in cross-section, or the form is incomplete segments with chords, spaced from the axis of the core at the same distance greater than the radius of the Central hole of the nozzle, or the shape of a circular sector with radius of the inner arc greater than the radius of the Central hole of the nozzle.

The optimal depth of the channel should be approximately one third of the radius of the outer cylindrical surface of the core.

For better formation of the cone spraying the working fluid between the inner end surface of the end cap and the end surface of the core, it is recommended to leave a small cavity, which contributes to a more uniform vortex liquid before exiting the nozzle. On the core side facing the nozzle, we recommend:

a chamfer with an angle of inclination of its generatrix to the longitudinal axis, not smaller angle forms the inner end surface of the cap to the same axis;

any spherical surface in the form of a spherical segment.

The core should be centered directly in the internal cavity of the cap (without intermediate landing surfaces), because it provides a minimum the high quality of the spray cone of the working fluid. To ensure minimum loss of energy swirling flow of the working fluid passing through the nozzle hole shape of the nozzle is preferably in the form of a truncated cone with a large base facing the outer surface of the cap, which is virtually absent cylindrical section in the nozzle channel.

To provide adjustment of the angle of the cone of sprayed fluid flow, it is recommended to lock the core in the housing (for example, with a pin mounted in a radial through hole made in the casing and the core, or by means of spring clamps, passing with clearance through the radial through hole in the leg of the core and installed in raspor with enclosure walls curved in the direction of the head core ends), and the connection of the cap and barrel (or cap and core) to perform using a threaded connection or by using a sleeve disposed between the housing and the cap and fixed to the body by means of a screw installed in a radial threaded hole of the sleeve, while protruding from the outer surface of the sleeve end of the screw should go in is made on the lateral surface of the cap is inclined holes in the leg of the core will always provide the correct Assembly. When installing the cap, the core is pressed against the end of the body, blocking the passage of fluid to swirl. At the beginning of the adjustment of the core due to the gap departs from the body, forming a gap for the passage of the working fluid.

When approaching the core end with the inner surface of the cap angle solution cone spraying the working fluid is increased, while when they are breeding a corner solution cone spray decreases, becoming solid. The range of adjustment of the angle of the solution cone spray is 5...8 C (maximum destruction) to 90 degrees or more (with a maximum convergence). The degree of influence of swirl on the flow of the sprayed liquid depends on the degree of convergence of the core and cap.

There are two variants of the threaded connection of the elements of the device. In the first embodiment, the cap connected to the housing, the second, which is more preferable, from the core, on which the side end surface of the housing should be performed by a special belt with thread and channels for the passage of fluid to swirl.

Another constructive variant of the connection of the cap and barrel, allowing Oswestry and cap and fixed to the body by means of a screw installed in a radial threaded hole of the sleeve, while protruding from the outer surface of the sleeve end of the screw comes in is made on the lateral surface of the cap is inclined groove to move along this groove.

Performed on the side surface of the cap is inclined groove performs when adjusting the role of the limiter in the movement of the cap relative to the fixed to the end of the body core.

The use of sleeve simplifies the operation for mounting the sprayer, because in this case no need to cut the threaded hole in the housing for installation of the screw. In the particular case you can do without the use of bushings, the role of which can perform the case.

The essence of the proposed invention is illustrated attached to the application for illustrative purposes.

In Fig. 1 shows a General view of a device for spraying liquid, which consists of a housing 1 made in the form of a tubular element with an internal chamber and a pipe 2 for supplying a working fluid, the core 3 in the form of a swirl with uniformly distributed around the circumference of the core channels, one side of which is inclined relative to the generatrix of the outer cylindrical axis of the core at the same distance, greater than the radius of the Central hole of the nozzle, or the shape of a circular sector with radius of the inner arc greater than the radius of the Central hole of the nozzle, the nozzle 4 made in the form mounted on the hollow body cap with a hole at the bottom. The core 3 is centered in the inner cavity of the cap, the grooves are communicated with the inner chamber of the housing 1. The core is fixed in the housing by a pin 5 mounted in a radial through hole made in the casing and the core. On the core 3 made a band with threads and B channels for the passage of working fluid to swirl In the core. Between the end surface of the core and the inner end surface of the cap is made small cavity G for the formation of a vortex liquid.

In Fig. 2 shows a structural variant of the device for spraying liquid, in which the connection of the cap 4 and the housing 1 is driven by the sleeve 6, is placed between the body and cap and fixed to the body by means of a screw 7 that is installed in a radial threaded hole of the sleeve, while protruding from the outer surface of the sleeve end of the screw comes in is made on the side surface of cap the PTO spring bracket 8, passing with clearance through the radial through hole in the leg of the core and installed in raspor with enclosure walls curved toward the head of the core ends.

In Fig. 3 shows the different versions of the grooves on the outer surface of the core 3, one side of E which is inclined relative to the generatrix of the outer cylindrical surface of the core, and having in cross-section, or the form is incomplete segments with chords W, spaced from the axis of the core at the same distance greater than the radius of the Central hole of the nozzle (see Fig. 3A), or the form of a circular sector with radius of the inner arc And greater than the radius of the Central hole of the nozzle (see Fig. 3b).

Proposed by the authors of the device for spraying the working fluid operates as follows. Supplied through the pipe 2 into the internal cavity of the housing 1, the flow of the working fluid before you reach the nozzle is twisted while passing through the channels of the core 3. The result is a high-quality cone of sprayed fluid. Regulation of the cone angle of the spray fluid is effected either by means of the threaded connection of the cap and core (or cap and barrel), Xue protruding end of the screw, installed in the threaded hole is fixed on the outer casing.

Sources of information

1. A. S. USSR N 643205, CL MKI B 05 B 1/34, 1979.

2. A. S. USSR N 882633, CL MKI B 05 B 1/34, 1981.

3. A. S. USSR N 923636, CL MKI B 05 B 1/34, 1982.

4. A. S. USSR N 902841, CL MKI B 05 B 1/34, 1982.

5. The patent of Russian Federation N 2010613, CL MKI B 05 B 1/34, 1994 prototype.

1. Device for spraying a liquid, comprising a housing with an internal chamber and a nozzle for supplying a working fluid that is installed with the side end surface of the housing core is in the form of a swirl with grooves on the outer cylindrical surface and the nozzle in the form mounted on the casing of a hollow cap with a Central outlet at the bottom, characterized in that the inner chamber of the housing communicates with the internal cavity of the cap by not less than two uniformly distributed around the circumference of core drillings, one side of which is inclined relative to the generatrix of the outer cylindrical surface of the core, and having in cross-section, or the form is incomplete segments with chords, spaced from the axis of the core at the same distance greater than the radius of the Central hole of the nozzle, ptx2">

2. Device for spraying liquid under item 1, characterized in that the core from the side adjacent to the nozzle, made a chamfer with an angle of inclination of its generatrix to the longitudinal axis, not smaller angle forms the inner end surface of the cap to the same axis.

3. Device for spraying liquid under item 1, characterized in that on the core side facing the body, made the belt with thread and channels for the passage of fluid.

4. Device for spraying liquid under item 1, characterized in that the core is fixed in the housing by means of spring clamps, passing with clearance through the radial through hole in the leg of the core and installed in the thrust with the walls of the casing, curved in the direction of the head core ends.

5. The device under item 1 or 4, characterized in that the connection of the cap and barrel is carried out using a sleeve disposed between the housing and the cap and fixed to the body by a screw mounted in a radial threaded hole of the sleeve, while protruding from the outer surface of the sleeve end of the screw comes in is made on the lateral surface of the cap is inclined groove to move along e

 

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