CN210950141U - Pilot-operated type pressure reducing valve - Google Patents
Pilot-operated type pressure reducing valve Download PDFInfo
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- CN210950141U CN210950141U CN201922215395.8U CN201922215395U CN210950141U CN 210950141 U CN210950141 U CN 210950141U CN 201922215395 U CN201922215395 U CN 201922215395U CN 210950141 U CN210950141 U CN 210950141U
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- air inlet
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 5
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses a pilot operated relief pressure valve, including valve body, upper valve cover and lower valve gap, main air inlet has been seted up to the lateral part of valve body, main gas outlet has been seted up to the lateral part that the valve body is relative with main air inlet, the guide's air inlet has been seted up to the lateral part of valve body, the regulating gas air inlet has been seted up to the lateral part that the valve body is relative with the guide's air inlet, the middle part inboard of valve body is provided with first appearance chamber, the lateral part and the first appearance chamber intercommunication of main air inlet, the upper portion inboard of valve body is provided with the second and holds the chamber, the lateral part and the lower valve cover intercommunication of main gas outlet, the guide's air inlet communicates with the lateral part in the first appearance chamber and the lateral part that the second holds the chamber respectively, the regulating. The utility model discloses an inner structure's optimization makes in the pressure tube, the blast pipe is integrated and the valve body, compact structure, and not only the appearance is pleasing to the eye, and can avoid the even emergence of taking over the wrong condition.
Description
Technical Field
The utility model relates to a pilot-operated type relief pressure valve technical field, concretely relates to pilot-operated type relief pressure valve.
Background
The pilot-operated pressure reducing valve adopts the opening degree of an opening and closing part in a control valve body to adjust the flow of a medium, reduces the pressure of the medium, adjusts the opening degree of the opening and closing part by means of the action of the pressure behind the valve, keeps the pressure behind the valve within a certain range, keeps the pressure at an outlet within a set range under the condition that the pressure at the inlet is continuously changed, and protects the subsequent life production appliances.
However, the existing pilot valve mainly comprises a main valve, a pilot pressure reducer, a pilot pressure guiding pipe, an exhaust pipe and the like, and since the pilot pressure guiding pipe and the exhaust pipe are both connected to the outer side of the valve body, the valve body has a large size, and more connecting pipes are easy to connect and are not attractive, on the other hand, since the pilot pressure guiding pipe and the exhaust pipe are both positioned on the outer side of the valve body, the pressure resistance degree is poor, the input and output pressures are both medium and low, the maximum inlet pressure is 4.0Mpa, and the outlet pressure is 1.6 Mpa; the pressure range is low, which is not beneficial to use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a guide's formula relief pressure valve, through inner structure's optimization, cancellation pressure pipe and blast pipe make in pressure pipe, blast pipe integration and the valve body, compact structure, not only the appearance is pleasing to the eye, avoids even taking over the emergence of the wrong condition of connecing, and withstand voltage scope increases to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a pilot-operated pressure reducing valve comprises a valve body, an upper valve cover and a lower valve cover, wherein a main air inlet is formed in the side portion of the valve body, a main air outlet is formed in the side portion, opposite to the main air inlet, of the valve body, a pilot air inlet is formed in the side portion of the valve body, an adjusting air inlet is formed in the side portion, opposite to the pilot air inlet, of the valve body, a first containing cavity is formed in the inner side of the middle of the valve body, the side portion of the main air inlet is communicated with the first containing cavity, a main valve core is installed on the inner side of the first containing cavity, a main valve spring is installed on the outer side of the upper portion of the main valve core, a stop block is connected to the upper portion of the main valve spring, a second containing cavity is formed in the inner side of the upper portion of the valve body, a pilot spring is installed on the inner, the inside of going up the valve gap is provided with the pressure regulating spring, the sub-unit connection of pressure regulating spring has the valve awl, go up the sealed fixed mounting in the upper portion of valve body of valve lid, the lower part and the pilot valve core of valve awl are contradicted mutually, the sealed fixed mounting in the lower part of valve body of lower valve lid, the inside sliding connection of lower valve lid has the sliding seat, the upper portion of sliding seat links to each other with the lower part of main valve core, the lateral part and the lower valve gap intercommunication of main gas outlet, the guide's air inlet communicates with the lateral part that the first appearance chamber was held and the lateral part that the second held the chamber respectively, the regulation gas air inlet communicates with the upper portion that the first appearance chamber and the position.
Preferably, the lower part of the pressure regulating hand wheel covers the outer side of the upper part of the upper valve cover, and the outer side of the pressure regulating hand wheel is provided with a concave-convex part.
Preferably, the middle upper part of the pilot valve core is provided with a supporting block matched with the pilot spring, and the upper part of the pilot valve core is provided with a rubber sealing cover.
Preferably, an outer convex part matched with the main valve spring is arranged on the side part of the main valve core, and the outer convex part is in clearance fit with the inner wall of the first accommodating cavity.
Preferably, the outer wall of the stop block is abutted to the outer wall of the first accommodating cavity, and the stop block is a rubber stop block.
Preferably, the side of the sliding seat is provided with a self-discharging type exhaust port.
To sum up, owing to adopted above-mentioned technique, the beneficial effects of the utility model are that:
the utility model discloses in, through set up guide's air inlet and regulation gas air inlet at the lateral part of valve body, guide's air inlet and first appearance chamber and second hold the chamber intercommunication, play the effect of drawing the pipe to set up the gas vent at the lateral part of valve body, be connected with the case through apron down, realize the connection process, compact structure, not only the appearance is pleasing to the eye, and can avoid linking the emergence of connecing the wrong condition.
The utility model discloses in, through guide's air inlet and regulation gas air inlet, introduce guide's air current respectively and adjust the air current to through the cooperation of guide's spring with the guide's case, be used for maintaining the steady of atmospheric pressure, and can reach higher outlet pressure, through the cooperation of main valve core and main valve spring, increase the pressure tolerance degree that initial was admitted, have wider pressure application scope.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged schematic view of a portion a of fig. 1 according to the present invention;
fig. 3 is an enlarged schematic view of a part B in fig. 1 according to the present invention.
In the figure: 1. a valve body; 2. an upper valve cover; 3. a lower valve cover; 4. a primary air inlet; 5. a main air outlet; 6. a pilot air inlet; 7. a regulated gas inlet; 8. a first cavity; 9. a main valve element; 10. a main valve spring; 11. a stopper; 12. a second cavity; 13. a pilot spring; 14. a pilot valve spool; 15. a pressure regulating screw; 16. a pressure regulating hand wheel; 17. a pressure regulating spring; 18. a valve cone; 19. a sliding seat; 20. a concave-convex portion; 21. a support block; 22. a rubber seal cover; 23. an outer convex portion; 24. self-discharging type exhaust port.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific situation of the specification.
The utility model provides a pilot-operated pressure reducing valve as shown in figures 1-3, which comprises a valve body 1, an upper valve cover 2 and a lower valve cover 3, wherein the side part of the valve body 1 is provided with a main air inlet 4, the side part of the valve body 1 opposite to the main air inlet 4 is provided with a main air outlet 5, the side part of the valve body 1 is provided with a pilot air inlet 6, the side part of the valve body 1 opposite to the pilot air inlet 6 is provided with a regulating air inlet 7, the inner side of the middle part of the valve body 1 is provided with a first containing cavity 8, the side part of the main air inlet 4 is communicated with the first containing cavity 8, the inner side of the first containing cavity 8 is provided with a main valve core 9, the outer side of the upper part of the main valve core 9 is provided with a main valve spring 10, the upper part of the main valve spring 10 is connected with a stop block 11, the inner side of the center of the upper portion of the upper valve cover 2 is in threaded connection with a pressure regulating screw 15, a pressure regulating hand wheel 16 is fixedly mounted on the outer side of the upper end of the pressure regulating screw 15, a pressure regulating spring 17 is arranged inside the upper valve cover 2, the lower portion of the pressure regulating spring 17 is connected with a valve cone 18, the upper valve cover 2 is fixedly mounted on the upper portion of the valve body 1 in a sealing mode, the lower portion of the valve cone 18 is abutted to a pilot valve core 14, the lower valve cover 3 is fixedly mounted on the lower portion of the valve body 1 in a sealing mode, a sliding seat 19 is slidably connected inside the lower valve cover 3, the upper portion of the sliding seat 19 is connected with the lower portion of a main valve core 9, the side portion of a main air outlet 5 is communicated with the lower valve cover 3, a pilot air inlet 6 is respectively communicated with the side portion of a first accommodating.
Specifically, the lower part of the pressure regulating hand wheel 16 covers the outer side of the upper part of the upper valve cover 2, the outer side of the pressure regulating hand wheel 16 is provided with a concave-convex part 20, and the concave-convex part 20 increases the friction force of the hand holding the pressure regulating hand wheel 16.
Specifically, a supporting block 21 matched with the pilot spring 13 is arranged at the middle upper part of the pilot valve core 14, a rubber sealing cover 22 is arranged at the upper part of the pilot valve core 14, the supporting block 21 is used for supporting the pilot valve core 14 in a matched manner with the pilot spring 13, and the rubber sealing cover 22 is used for sealing.
Specifically, an outer convex portion 23 matched with the main valve spring 10 is arranged on the side portion of the main valve element 9, the outer convex portion 23 is in clearance fit with the inner wall of the first accommodating cavity 8, the outer convex portion 23 facilitates connection of the main valve spring 10 and the main valve element 9, and the clearance fit facilitates movement of the main valve spring in the first accommodating cavity 8.
Specifically, the outer wall of the stop block 11 is abutted to the outer wall of the first accommodating cavity 8, the stop block 11 is a rubber stop block, and the stop block 11 is used for sealing, so that the pilot air inlet 6 is conveniently communicated with or disconnected from the first accommodating cavity 8 after adjustment.
Specifically, the side of the sliding seat 19 is provided with a self-discharging type exhaust port 24, and the self-discharging type exhaust port 24 facilitates the exhaust of air between the sliding seat 19 and the lower valve cover 3 in the moving process of the sliding seat 19.
The working principle is as follows: when the valve is used, the main air inlet 4 is connected with an external pipeline, so that external air enters the valve body 1 and the first cavity 8, the main valve core 9 and the sliding seat 19 are driven to move downwards under the action of air pressure, the lower part of the first cavity 8 is communicated with the main air outlet 5, and the air is introduced into the other discharged pipeline;
leading gas enters the pilot valve through the pilot gas inlet 6, pushes the pilot valve core 14 to move upwards, further pushes the valve cone 18 to move, further enables the valve cone 18 to push the pressure regulating spring 17 to move upwards, drives the pressure regulating screw 15 to move by manually rotating the pressure regulating hand wheel 16, further extrudes the pressure regulating spring 17, and extrudes the valve cone 18 through the pressure regulating spring 17, further adjusts the pressure;
regulating gas is introduced through the regulating gas inlet 7, the regulating gas assists the main valve element 9 to move downwards under the initial condition, and when the stop block 11 moves to the lower part of the pilot gas inlet 6, the regulation is realized by the matching of the regulating gas and the pilot gas, so that the regulating valve is applicable to a large pressure regulating range.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Claims (6)
1. The utility model provides a pilot-operated formula relief pressure valve, includes valve body (1), upper valve cover (2) and lower valve cover (3), its characterized in that: the valve is characterized in that a main air inlet (4) is formed in the side portion of the valve body (1), a main air outlet (5) is formed in the side portion, opposite to the main air inlet (4), of the valve body (1), a pilot air inlet (6) is formed in the side portion of the valve body (1), an adjusting air inlet (7) is formed in the side portion, opposite to the pilot air inlet (6), of the valve body (1), a first accommodating cavity (8) is formed in the inner side of the middle of the valve body (1), the side portion of the main air inlet (4) is communicated with the first accommodating cavity (8), a main valve core (9) is installed on the inner side of the first accommodating cavity (8), a main valve spring (10) is installed on the outer side of the upper portion of the main valve core (9), a stop block (11) is connected to the upper portion of the main valve spring (10), a second accommodating cavity (12), the upper portion of guide spring (13) supports has guide valve core (14), the inboard threaded connection in upper portion center of going up valve gap (2) has pressure regulating screw (15), the upper end outside fixed mounting of pressure regulating screw (15) has pressure regulating hand wheel (16), the inside of going up valve gap (2) is provided with pressure regulating spring (17), the sub-unit connection of pressure regulating spring (17) has valve awl (18), go up valve gap (2) sealed fixed mounting in the upper portion of valve body (1), the lower part and the pilot valve core (14) of valve awl (18) are inconsistent, lower valve gap (3) sealed fixed mounting in the lower part of valve body (1), the inside sliding connection of lower valve gap (3) has sliding seat (19), the upper portion of sliding seat (19) links to each other with the lower part of main valve core (9), the lateral part and the lower valve gap (3) intercommunication of main gas outlet (5), the pilot gas inlet (6) is respectively communicated with the side part of the first containing cavity (8) and the side part of the second containing cavity (12), and the adjusting gas inlet (7) is respectively communicated with the upper part of the first containing cavity (8) and the part between the valve cone (18) and the pilot valve core (14).
2. A pilot operated pressure reducing valve according to claim 1, wherein: the lower part of the pressure regulating hand wheel (16) covers the outer side of the upper part of the upper valve cover (2), and the outer side of the pressure regulating hand wheel (16) is provided with a concave-convex part (20).
3. A pilot operated pressure reducing valve according to claim 1, wherein: the middle upper part of the pilot valve core (14) is provided with a supporting block (21) matched with the pilot spring (13), and the upper part of the pilot valve core (14) is provided with a rubber sealing cover (22).
4. A pilot operated pressure reducing valve according to claim 1, wherein: the side of main valve core (9) is provided with outer convex part (23) with main valve spring (10) complex, outer convex part (23) are clearance fit with the inner wall of first appearance chamber (8).
5. A pilot operated pressure reducing valve according to claim 1, wherein: the outer wall of the stop block (11) is abutted to the outer wall of the first accommodating cavity (8), and the stop block (11) is a rubber stop block.
6. A pilot operated pressure reducing valve according to claim 1, wherein: the side of the sliding seat (19) is provided with a self-discharging type exhaust port (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922215395.8U CN210950141U (en) | 2019-12-05 | 2019-12-05 | Pilot-operated type pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922215395.8U CN210950141U (en) | 2019-12-05 | 2019-12-05 | Pilot-operated type pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210950141U true CN210950141U (en) | 2020-07-07 |
Family
ID=71381044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922215395.8U Expired - Fee Related CN210950141U (en) | 2019-12-05 | 2019-12-05 | Pilot-operated type pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210950141U (en) |
-
2019
- 2019-12-05 CN CN201922215395.8U patent/CN210950141U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200707 |