CN2629828Y - Pressure type stepless variable spray head device - Google Patents
Pressure type stepless variable spray head device Download PDFInfo
- Publication number
- CN2629828Y CN2629828Y CN 03264882 CN03264882U CN2629828Y CN 2629828 Y CN2629828 Y CN 2629828Y CN 03264882 CN03264882 CN 03264882 CN 03264882 U CN03264882 U CN 03264882U CN 2629828 Y CN2629828 Y CN 2629828Y
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- cavity
- spool
- air cell
- minor air
- valve body
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Abstract
The utility model discloses a stepless variant sprinkler head device changed with the pressure, which comprises a main valve body (8) and a check valve arranged in the main valve body (8). The device is characterized in that one side of the main valve body (8) is also provided with a cavity (29); the outlets of the cavity (29) and the check valve are communicated; the cavity (29) is provided with a rubber diaphragm (16) therein; the lower end is provided with the conical valve core; the rubber diaphragm (16) divides the cavity (29) into the upper cavity and the lower cavity; the valve core passes and is vertically fixed on the rubber diaphragm (16); the upper part of the valve is provided with a pressure regulating spring device; the lower part of the cavity (29) is provided with a vortex chamber; the conical body of the valve body and the round hole (25) of the vortex chamber match together, thereby forming the section-variant spraying hole. The device conducts an automatic stepless adjustment of the mist spraying amount by a large degree with the change in the spraying pressure. Moreover, the status of atomization remains unchanged, thereby better meeting the requirement for variant mist spraying.
Description
Technical field
The utility model relates to a kind of device with the spraying of pressure variation stepless variable, is mainly used in the pressure type stepless variable ejecting device of soups such as large and medium-sized engine-driven atomiser spraying pesticide or bactericide, also can be used with other spraying mechanical.
Technical background
Be applied to the used ejecting device of large and medium-sized engine-driven atomiser that soups such as agricultural chemicals or bactericide spray operation at present, mostly be the quantitation nozzle device, corresponding certain certain atomisation pressure has a metastable flow, and keep spray pattern preferably, these ejecting devices are suitable for quantitatively spraying operation continuously under certain atomisation pressure, can not automatic variable spray medicine.Therefore, the shower nozzle of each sprayer unit gross area in spraying swath quantitatively sprays continuously in operation process, can not change and the variation variable rate spray of the unit speed of travel according to the dispenser clarification of objective, thereby cause the waste and the environmental pollution of soup, make the validity of the agricultural chemicals of throwing in be difficult to assurance.For realizing variable rate spray, the employing that has increases the method that pressure increases discharge rate, but existing quantitation nozzle device, a plurality of discharge rate grades have been divided into by the discharge rate size, when the shower nozzle of each discharge rate grade changes in a big way when atomisation pressure, example pressure changes 1～6 pressure rating (bar), spray amount amplitude of variation very little (discharge rate changes 1～2.5 times), and spray pattern changes thereupon, flow has slightly and increases but droplet diminishes when atomisation pressure increases, flow diminishes the droplet change greatly when atomisation pressure reduces, and can not change spray amount by a relatively large margin.Other has a kind of equipment of small motor spraying machine spray gun shower nozzle, under certain atomisation pressure, rotate its Adjusting bolt Adjusting screw and can regulate its spray amount by a relatively large margin, hour spray pattern is better but it is at discharge rate, along with its discharge rate is transferred big range to increase droplet also to become greatly the spray pattern variation.
Summary of the invention
The purpose of this utility model is that a kind of pressure type stepless variable ejecting device will be provided, this device in less pressure limit along with the variation of atomisation pressure stepless variable by a relatively large margin, example pressure changes 1～3 pressure rating (bar), discharge rate changes 1～10 times, not only stepless variable spraying by a relatively large margin, and spray pattern is constant.
Comprise main valve body 8 in order to reach the technical scheme that the purpose of this utility model adopts, be located at the check valve in the main valve body 8, it is characterized in that: the side at main valve body 8 also is provided with a cavity 29, cavity 29 communicates with the outlet of check valve, the spool that rubber diaphragm 16, lower end have bullet is installed in the cavity 29, rubber diaphragm 16 is separated into up and down two chambeies to cavity 29, spool pass and vertical fixing on rubber diaphragm 16, the top of spool is provided with the pressure spring device; Be provided with minor air cell's body in the bottom of cavity 29, the bullet of spool matches with the circular hole 25 of minor air cell's body, forms the variable cross-section spray orifice;
In the above-mentioned pressure type stepless variable ejecting device, described minor air cell body comprises upper body, minor air cell 20 and minor air cell's lower body 21, have helicla flute 22 on the upper body, minor air cell 20, its center has through hole 23, the upper surface of minor air cell's lower body 21 has spherical concave surface 24, its center has circular hole 25, and the bullet of spool passes through hole 23 and matches with circular hole 25, forms the variable cross-section spray orifice
In the above-mentioned pressure type stepless variable ejecting device, described pressure spring device comprises the regulation valve body 15 that is connected with main valve body 8, is installed in the regulation valve body 15, is enclosed within pressure spring 14, adjusting nut 13 on the regulating valve stem 12;
Check valve described in the above-mentioned pressure type stepless variable ejecting device is made up of steel ball 6 and antidrip valve spring 7;
In the above-mentioned pressure type stepless variable ejecting device, spool can be for split type, be made of regulating valve stem 12 and regulating spool 18, the lower end of regulating spool 18 has bullet, and regulating valve stem 12 and regulating spool 18 are vertically fixed on the both sides up and down of rubber diaphragm 16 by screw thread;
In the above-mentioned pressure type stepless variable ejecting device, the bullet of spool lower end is cone or frustum or axial triangle grooved.
The beneficial effects of the utility model are, along with spray amount is regulated in the variation of atomisation pressure automatically, and its spray amount of step-less adjustment by a relatively large margin not only, and spray pattern is constant, can satisfy the requirement of variable rate spray preferably.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of the utility model pressure type stepless variable ejecting device;
Fig. 2 is a minor air cell of the present utility model upper body front view;
Fig. 3 is a minor air cell of the present utility model upper body vertical view;
Fig. 4 is a minor air cell of the present utility model lower body vertical view;
Fig. 5 is the A-A cutaway view of Fig. 4;
Fig. 6 is a regulating spool front view of the present utility model;
Fig. 7 is the second embodiment regulating spool front view of the present utility model;
Fig. 8 is the 3rd an embodiment regulating spool front view of the present utility model;
Fig. 9 is that the A of Fig. 8 is to view.
Among the figure: 1 connecting plate last slice, sheet under 2 connecting plates, 3 rubber cushion blocks, 4 nuts, 5 main valve upper bodies, 6 steel balls, 7 antidrip valve springs, 8 main valve bodies, 9 pads, 10 cover plates, 11 soket head cap screws, 12 regulating valve stems, 13 look nuts, 14 pressure springs, 15 regulation valve bodies, 16 rubber diaphragms, 17 nuts, 18 regulating spools, 19 nuts, upper body, 20 minor air cell, 21 minor air cell's lower bodies, 22 helicla flutes, 23 through holes, 24 ball-type concave surfaces, 25 circular holes, 26 frustums, 27 cones, 28 axial triangle grooveds, 29 cavitys.
The specific embodiment
Referring to figs. 1 through Fig. 9, this installs mainly by main valve upper body 5, steel ball 6, antidrip valve spring 7, main valve body 8, cavity 29, regulating valve stem 12, look nut 13, pressure spring 14, regulation valve body 15, rubber diaphragm 16, regulating spool 18, nut 19, upper body, minor air cell 20, minor air cell's lower body 21 is formed.In the present embodiment, constitute the check valve in main valve body 8 left sides by steel ball 6 and antidrip valve spring 7, constitute minor air cell's body by upper body, minor air cell 20 and minor air cell's lower body 21, spool is split type, be made of by being threaded regulating valve stem 12 and regulating spool 18, this split-type structural is convenient to change when valve core head weares and teares, certainly, if processing easy, also can directly be processed into integral type.
Upper body, minor air cell 20 is a short cylinder (seeing Fig. 2, Fig. 3), be processed with 4 helicla flutes 22 around it, helicla flute 22 is a rectangular channel, 45 ° of lead angles, its center is processed with a through hole 23, be processed with a ball-type concave surface 24 and a circular hole 25 (seeing Fig. 4 and Fig. 5) on minor air cell's lower body 21, frustum 26 (see figure 6)s are processed in regulating spool 18 lower ends, also can be processed into cone 27 (see figure 7)s or axial triangle grooved 28 (seeing Fig. 8 and Fig. 9).
Rubber diaphragm 16 is installed in the main valve body 8 and by regulation valve body 15 and compresses, rubber diaphragm 16 is separated into two chambeies up and down to the cavity 29 on main valve body 8 right sides, regulating valve stem 12 is installed in the regulation valve body 15 and can relatively moves in valve body, regulating valve stem 12 is threaded with regulating spool 18 and is tightened to one with nut and rubber diaphragm 16, pressure spring 14 is equipped with in regulating valve stem 12 tops, look nut 13 is installed on the regulation valve body 15 in order to adjust the pretightning force of pressure spring 14, cavity of resorption at cavity 29 is equipped with upper body, minor air cell 20 and minor air cell's lower body 21, and be fastened on the main valve body 8 with nut 19, regulating spool 18 passes the through hole 23 of upper body, minor air cell 20, regulating spool 18 lower end frustums 26 form the variable cross-section spray orifice with the circular hole 25 of minor air cell's lower body 21, main valve body 8 left side is equipped with steel ball 6 and antidrip valve spring 7 in the chamber, main valve body 8 is threaded with main valve upper body 5, main valve upper body 5 inner chambers are in order to install screen pack, and valve body joins by sheet under connecting plate last slice 1 and the connecting plate 2 and spray boom.
When the soup with certain pressure by main valve upper body 5 and after overcoming the elastic force of antidrip valve spring 7, push the cavity of resorption that steel ball 6 enters cavity 29 open, and enter in the ball-type concave surface 24 of minor air cell's lower body 21 by the helicla flute of upper body, minor air cell 20, the upwards active force that produces when cavity 29 cavity of resorption fluid pressures is during greater than the pretightning force of pressure spring 14, pushing rubber diaphragm 16 upwards protrudes out and drives regulating spool 18 and moves up, rubber diaphragm 16, regulating valve stem 12, change linear moving with regulating spool 18 with atomisation pressure, regulating spool 18 lower end frustum parts increase with the spray orifice sectional area of the circular hole formation of minor air cell's lower body 21, soup sprays from spray orifice, the cavity of resorption fluid pressure of cavity 29 is big more, the active force that makes progress that produces is big more, pressure spring 14 amounts of being compressed are just big more, regulating spool 18 amounts of moving up are big more, regulating spool 18 lower end frustum parts are big more with the spray orifice sectional area of circular hole 25 formation of minor air cell's lower body 21, it is big that discharge rate becomes, and vice versa.Because when atomisation pressure increased, the spray orifice channel cross-sectional area increased, so the variable spray pattern is constant by a relatively large margin.
When system's stop-spraying pipeline residual compression was lower than certain certain value, the elastic force of antidrip valve spring 7 promoted steel ball feed pathway is closed, and prevents the water clock of soup.
It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (6)
1, a kind of pressure type stepless variable ejecting device, comprise main valve body (8), be located at the check valve in the main valve body (8), it is characterized in that: the side at main valve body (8) also is provided with a cavity (29), cavity (29) communicates with the outlet of check valve, the spool that rubber diaphragm (16), lower end have bullet is installed in the cavity (29), rubber diaphragm (16) is separated into two chambeies up and down to cavity (29), spool pass and vertical fixing on rubber diaphragm (16), the top of spool is provided with the pressure spring device; Bottom at cavity (29) is provided with minor air cell's body, and the bullet of spool matches with the circular hole (25) of minor air cell's body, forms the variable cross-section spray orifice.
2, pressure type stepless variable ejecting device according to claim 1, it is characterized in that: described minor air cell body comprises upper body, minor air cell (20) and minor air cell's lower body (21), have helicla flute (22) on the upper body, minor air cell (20), its center has through hole (23), the upper surface of minor air cell's lower body (21) has spherical concave surface (24), its center has circular hole (25), and the bullet of spool passes through hole (23) and matches with circular hole (25), forms the variable cross-section spray orifice.
3, pressure type stepless variable ejecting device according to claim 1 and 2, it is characterized in that: described pressure spring device comprises the regulation valve body (15) that is connected with main valve body (8), is installed in the regulation valve body (15), is enclosed within pressure spring (14), adjusting nut (13) on the regulating valve stem (12).
4, pressure type stepless variable ejecting device according to claim 1 and 2 is characterized in that: described check valve is made up of steel ball (6) and antidrip valve spring (7).
5, pressure type stepless variable ejecting device according to claim 1 and 2, it is characterized in that: spool can be for split type, constitute by regulating valve stem (12) and regulating spool (18), the lower end of regulating spool (18) has bullet, and regulating valve stem (12) and regulating spool (18) are vertically fixed on the both sides up and down of rubber diaphragm (16) by screw thread.
6, pressure type stepless variable ejecting device according to claim 1 and 2 is characterized in that: the bullet of spool lower end is cone or frustum or axial triangle grooved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03264882 CN2629828Y (en) | 2003-06-06 | 2003-06-06 | Pressure type stepless variable spray head device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03264882 CN2629828Y (en) | 2003-06-06 | 2003-06-06 | Pressure type stepless variable spray head device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2629828Y true CN2629828Y (en) | 2004-08-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03264882 Expired - Fee Related CN2629828Y (en) | 2003-06-06 | 2003-06-06 | Pressure type stepless variable spray head device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2629828Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912829A (en) * | 2010-08-10 | 2010-12-15 | 江苏大学 | Guide rail type variable spraying nozzle |
| CN109819955A (en) * | 2019-01-02 | 2019-05-31 | 北京农业智能装备技术研究中心 | Paddle components and aviation atomization system |
| CN110314775A (en) * | 2019-07-30 | 2019-10-11 | 华南农业大学 | A kind of stepless variable spray head that outflow port aperture is controllable |
| CN110328068A (en) * | 2019-07-30 | 2019-10-15 | 华南农业大学 | A kind of self-adjustable adaptive stepless variable spray head in outflow port aperture section |
-
2003
- 2003-06-06 CN CN 03264882 patent/CN2629828Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912829A (en) * | 2010-08-10 | 2010-12-15 | 江苏大学 | Guide rail type variable spraying nozzle |
| CN101912829B (en) * | 2010-08-10 | 2012-11-07 | 江苏大学 | Guide rail type variable spraying nozzle |
| CN109819955A (en) * | 2019-01-02 | 2019-05-31 | 北京农业智能装备技术研究中心 | Paddle components and aviation atomization system |
| CN110314775A (en) * | 2019-07-30 | 2019-10-11 | 华南农业大学 | A kind of stepless variable spray head that outflow port aperture is controllable |
| CN110328068A (en) * | 2019-07-30 | 2019-10-15 | 华南农业大学 | A kind of self-adjustable adaptive stepless variable spray head in outflow port aperture section |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |