CN220416351U - Back pressure valve - Google Patents
Back pressure valve Download PDFInfo
- Publication number
- CN220416351U CN220416351U CN202322123131.6U CN202322123131U CN220416351U CN 220416351 U CN220416351 U CN 220416351U CN 202322123131 U CN202322123131 U CN 202322123131U CN 220416351 U CN220416351 U CN 220416351U
- Authority
- CN
- China
- Prior art keywords
- valve
- back pressure
- handle
- adjusting screw
- cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009991 scouring Methods 0.000 claims abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Safety Valves (AREA)
- Control Of Fluid Pressure (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
The utility model provides a back pressure valve, which comprises a valve body, wherein a valve seat and a valve core are arranged in the valve body, the valve core corresponds to the valve seat, a valve cover is arranged in the valve body, a piston is elastically matched in the valve cover, the piston corresponds to the valve core, a valve cap is arranged in the valve body, an adjusting screw is arranged on the valve cap, a handle is in threaded fit on the adjusting screw, a handle cover is fixed on the periphery of the handle, and the valve core is made of a scouring-resistant material. According to the utility model, the bearing is arranged between the adjusting screw and the valve cap, the hexagonal nut is arranged in the handle, so that friction can be reduced when the handle is rotated, the service life of the back pressure valve is prolonged, the adjusting screw is arranged on the valve cap, the back pressure at the inlet end can be changed by rotating the adjusting screw, and any interval pressure required before the valve is ensured, so that the back pressure is controlled, and the safety pressure of the system is ensured.
Description
Technical Field
The utility model relates to the technical field of back pressure valves, in particular to a back pressure valve.
Background
The back pressure valve is also called an adjustable safety valve, the inlet pressure is controlled to be at accurate safe working pressure, so that the system cannot be overpressured, the accuracy control is accurate, the back pressure valve is commonly used for discharging the pressure of the overpressure part of the back pressure valve from an outlet at the front end of the system at the highest 100 megapascals safe control working pressure, the pressure is kept in the preset safe working pressure range of the front end, the back pressure valve in China is mostly a low-pressure diaphragm back pressure valve at present, the back pressure valve in the high-pressure field is fewer, the cost is higher, the price of a product is higher, the existing back pressure valve mostly consists of a valve body and a pressure regulating handle, friction is generated between the pressure regulating handle and the valve body when the pressure regulating handle is rotated, and the service life of the back pressure valve is influenced.
To this end, the present utility model provides a back pressure valve.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide the back pressure valve so as to solve the problems in the background art, and the utility model can reduce friction and prolong the service life of the back pressure valve when the handle is rotated; and any interval pressure required before the valve can be ensured, so that the back pressure is controlled, and the safety pressure of the system is ensured.
In order to achieve the above object, the present utility model is realized by the following technical scheme: the back pressure valve comprises a valve body, a valve seat and a valve core are arranged in the valve body, the valve core corresponds to the valve seat, a valve cover is arranged in the valve body, a piston is elastically matched in the valve cover, the piston corresponds to the valve core, a valve cap is arranged in the valve body, an adjusting screw is arranged on the valve cap, a handle is in threaded fit with the adjusting screw, and a handle cover is fixed on the periphery of the handle.
Furthermore, O-shaped rings are arranged between the valve body and the valve seat, between the valve body and the valve cover and between the valve cover and the piston.
Further, a first spring is arranged between the valve core and the piston.
Further, first spring holder and second spring holder have been installed respectively at both ends in the valve cap, are fixed with the second spring between first spring holder and the second spring holder, have installed interior hexagonal flat end holding screw between second spring holder and the valve cap.
Further, the adjusting screw is rotationally connected with the valve cap, and a bearing is arranged between the adjusting screw and the valve cap.
Further, a hexagonal nut is arranged in the handle, and the hexagonal nut corresponds to one end of the adjusting screw.
Further, a spring washer is fixed between the hexagonal nut and the handle.
The utility model has the beneficial effects that: the back pressure valve comprises an adjusting screw; a valve cap; a bearing; a handle; a hexagonal nut; and adjusting the screw.
The bearing is arranged between the adjusting screw and the valve cap, the hexagonal nut is arranged in the handle, friction can be reduced when the handle is rotated, the service life of the back pressure valve is prolonged, the adjusting screw is arranged on the valve cap, the back pressure of the inlet end can be changed by rotating the adjusting screw, any interval pressure required before the valve is ensured, and therefore the back pressure is controlled, and the safety pressure of the system is ensured.
Drawings
FIG. 1 is a schematic diagram of an assembled structure of a back pressure valve of the present utility model;
in the figure: 1. a valve body; 2. a valve seat; 3. an O-ring; 4. a first spring; 5. a first spring seat; 6. a valve cap; 7. a second spring; 8. a second spring seat; 9. a bearing; 10. adjusting a screw; 11. a hexagonal nut; 12. a valve core; 15. a valve cover; 16. a piston; 17. a hexagon socket head end set screw; 18. a spring washer; 19. a handle; 20. a handle cover.
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
Referring to fig. 1, the present utility model provides a technical solution: the back pressure valve comprises a valve body 1, a valve seat 2 and a valve core 12 are arranged in the valve body 1, the valve core 12 corresponds to the valve seat 2, a valve cover 15 is arranged in the valve body 1, a piston 16 is elastically matched in the valve cover 15, the piston 16 corresponds to the valve core 12, a valve cap 6 is arranged in the valve body 1, an adjusting screw 10 is arranged on the valve cap 6, a handle 19 is in threaded fit with the adjusting screw 10, and a handle cover 20 is fixed on the periphery of the handle 18.
In this embodiment, the O-rings 3 are disposed between the valve body 1 and the valve seat 2, between the valve body 1 and the valve cover 15, and between the valve cover 15 and the piston 16, and the O-rings 3 are provided to ensure sealing, so as to prevent leakage.
A first spring 4 is arranged between the valve core 12 and the piston 16, and the first spring 4 can press the valve core 12 on the valve seat 2.
The first spring seat 5 and the second spring seat 8 have been installed respectively at the both ends in the valve bonnet 6, be fixed with the second spring 7 between first spring seat 5 and the second spring seat 8, install interior hexagonal flat end holding screw 17 between second spring seat 8 and the valve bonnet 6, adjusting screw 10 is connected with the valve bonnet 6 rotation, install bearing 9 between adjusting screw 10 and the valve bonnet 6, be equipped with hexagon nut 11 in the handle 19, hexagon nut 11 corresponds with the one end of adjusting screw 10, be fixed with spring washer 18 between hexagon nut 11 and the handle 19.
Specifically, when the handle 19 is rotated clockwise, the pressure applied to the second spring 7 can be increased, so as to increase the back pressure at the inlet end, when the handle 19 is rotated, the handle 19 drives the adjusting screw 10 to rotate, the bearing 9 can reduce friction, under the action of the hexagonal nut 11, the adjusting screw 10 pushes the second spring seat 8 downwards, so as to prevent the second spring seat 8 from rotating against the inner hexagonal flat end setting screw 17, the second spring 7 can be extruded, the spring force acts on the piston 16, so that the piston 16 moves downwards until the piston 16 contacts the valve seat 2, the lower cavity is sealed, so that pressure is built up, if the force acting on the piston 16 at the moment is larger than the spring force, the piston 16 is jacked upwards by the pressure, so that the piston 16 is separated from the valve seat 2, the inlet is communicated with the outlet, and thus pressure is relieved, and when the pressure is smaller than the piston force, the piston 16 moves downwards under the action of the elastic force, so that the seal is reestablished.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The back pressure valve comprises a valve body (1), and is characterized in that a valve seat (2) and a valve core (12) are arranged in the valve body (1), the valve core (12) corresponds to the valve seat (2), a valve cover (15) is arranged in the valve body (1), a piston (16) is elastically matched in the valve cover (15), the piston (16) corresponds to the valve core (12), a valve cap (6) is arranged in the valve body (1), an adjusting screw (10) is arranged on the valve cap (6), a handle (19) is in threaded fit on the adjusting screw (10), a handle cover (20) is fixed on the periphery of the handle (19), and the valve core (12) is made of a scouring-resistant material.
2. The back pressure valve of claim 1, wherein: o-shaped rings (3) are arranged between the valve body (1) and the valve seat (2), between the valve body (1) and the valve cover (15) and between the valve cover (15) and the piston (16).
3. The back pressure valve of claim 1, wherein: a first spring (4) is arranged between the valve core (12) and the piston (16).
4. The back pressure valve of claim 1, wherein: the two ends in the valve cap (6) are respectively provided with a first spring seat (5) and a second spring seat (8), a second spring (7) is fixed between the first spring seat (5) and the second spring seat (8), and an inner hexagonal flat end set screw (17) is arranged between the second spring seat (8) and the valve cap (6).
5. The back pressure valve of claim 1, wherein: the adjusting screw (10) is rotationally connected with the valve cap (6), and a bearing (9) is arranged between the adjusting screw (10) and the valve cap (6).
6. The back pressure valve of claim 1, wherein: a hexagonal nut (11) is arranged in the handle (19), and the hexagonal nut (11) corresponds to one end of the adjusting screw (10).
7. The back pressure valve of claim 6, wherein: a spring washer (18) is fixed between the hexagonal nut (11) and the handle (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322123131.6U CN220416351U (en) | 2023-08-08 | 2023-08-08 | Back pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322123131.6U CN220416351U (en) | 2023-08-08 | 2023-08-08 | Back pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220416351U true CN220416351U (en) | 2024-01-30 |
Family
ID=89654924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322123131.6U Active CN220416351U (en) | 2023-08-08 | 2023-08-08 | Back pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220416351U (en) |
-
2023
- 2023-08-08 CN CN202322123131.6U patent/CN220416351U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213809061U (en) | Pressure-adjustable safety valve | |
| CN220416351U (en) | Back pressure valve | |
| CN202360828U (en) | Medium-flow safety valve for compound sealing | |
| CN106958676B (en) | Automatic pressure regulating valve | |
| CN202469113U (en) | Air reducing valve for ship | |
| CN103322250A (en) | Air reducing valve for ship | |
| CN202360827U (en) | Large-flow safety valve for compound sealing | |
| CN201712658U (en) | External adjusted constant-current overflow valve for steering pump | |
| CN209818832U (en) | High-temperature high-pressure spring type safety valve | |
| CN203146949U (en) | Butterfly type safety valve | |
| CN109058535A (en) | Pressure adjustable safety valve | |
| CN203571134U (en) | Plastic sealing pilot operated safety valve | |
| CN201925539U (en) | Precise pressure regulating valve | |
| CN111692392A (en) | Pressure regulating method of ultrahigh pressure self-operated pressure regulator | |
| CN201715001U (en) | Valve body with balance washer used for gas bottle pressure reducer | |
| CN219139952U (en) | Compact pilot-operated safety valve | |
| CN219493166U (en) | Adjustable safety valve | |
| CN218719060U (en) | Pressure throttle governing valve convenient to pressure regulating | |
| CN220016201U (en) | Pressure relief safety valve | |
| CN209892767U (en) | Floating seal valve seat of gas pressure regulator | |
| CN216382807U (en) | Valve rod adjusting structure | |
| CN210950074U (en) | Multi-working-condition safety valve | |
| CN221003817U (en) | Plunger valve | |
| CN219413654U (en) | Large-caliber gas shut-off valve with simple installation and convenient maintenance | |
| CN218954117U (en) | High-performance check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |