CN210266052U - Vacuum pressure reducing valve - Google Patents
Vacuum pressure reducing valve Download PDFInfo
- Publication number
- CN210266052U CN210266052U CN201921319212.0U CN201921319212U CN210266052U CN 210266052 U CN210266052 U CN 210266052U CN 201921319212 U CN201921319212 U CN 201921319212U CN 210266052 U CN210266052 U CN 210266052U
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- valve
- diaphragm
- seat
- valve body
- pressure regulating
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- Expired - Fee Related
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Abstract
The utility model relates to a vacuum pressure reducing valve, which comprises a valve body, a valve cover arranged at the upper end of the valve body, a diaphragm component arranged between the valve body and the valve cover, and an adjusting component, the valve body is respectively provided with an air inlet interface and an air outlet interface which are communicated with the inner cavity of the valve body, the lower end of the valve body is provided with a locking cover, a valve core assembly is arranged between the locking cover and the membrane assembly, an atmospheric chamber is formed between the diaphragm assembly and the valve body, a vacuum chamber is formed between the diaphragm assembly and the valve cover, the regulating component is arranged in the vacuum chamber, the valve core component comprises a valve core seat arranged in the locking cover, a valve core arranged between the valve core seat and the membrane component, and a balance spring arranged between the locking cover and the valve core seat, and a gasket and a sealing ring are respectively arranged between the valve core seat and the locking cover, and form sealing fit between the valve core seat and the locking cover. The utility model has the advantages of simple structure, stable and reliable performance and convenient operation.
Description
Technical Field
The utility model relates to a pneumatic element technical field, concretely relates to vacuum pressure reducing valve.
Background
At present, the vacuum pressure reducing valve is widely applied to the fields of steel, electric power, metallurgy, shipbuilding, aviation, papermaking, chemical engineering, machine tools, engineering machinery, construction machinery and the like. The vacuum 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, simultaneously 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 in a certain range, and keeps the outlet pressure of the valve fluctuating in a smaller range under the condition that the inlet pressure is continuously changed.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a simple structure, stable performance are reliable, simple operation's vacuum relief pressure valve.
In order to achieve the purpose, the utility model adopts a vacuum pressure reducing valve, which comprises a valve body, a valve cover arranged at the upper end of the valve body, a diaphragm component and an adjusting component which are arranged between the valve body and the valve cover, wherein the valve body is respectively provided with an air inlet and an air outlet which are communicated with the inner cavity of the valve body, the lower end of the valve body is provided with a locking cover, a valve core component is arranged between the locking cover and the diaphragm component, a big air chamber is formed between the diaphragm component and the valve body, a vacuum chamber is formed between the diaphragm component and the valve cover, the adjusting component is arranged in the vacuum chamber, the valve core component comprises a valve core seat arranged in the locking cover, a valve core arranged between the valve core seat and the diaphragm component and a balance spring arranged between the locking cover and the valve core seat, a gasket and a sealing ring are respectively arranged between the valve core seat and the, and form the sealing fit between the valve core seat and the locking cover.
The beneficial effect of above-mentioned structure is: the vacuum pressure reducing valve has the advantages of simple structure, stable and reliable performance and convenient operation, when the vacuum pressure reducing valve works, the hand wheel of the pressure regulating assembly is rotated clockwise, the pressure regulating spring enables the diaphragm and the valve core to be pushed down, the air outlet connector side is communicated with the air inlet connector side, the vacuum degree of the air inlet connector side is increased (changed to absolute vacuum), the vacuum pressure of the air inlet connector side enters a vacuum chamber through an air passage, acts on the diaphragm assembly and is balanced with the compression force of the pressure regulating spring, and then the air inlet connector side pressure is set. If the vacuum degree of the air inlet side is higher than a set value (changes to absolute vacuum), the pressure of the pressure regulating spring and the pressure of the air inlet side of the vacuum chamber lose balance, the diaphragm assembly is pulled upwards, the valve core and the valve core seat are closed, the diaphragm seat and the valve core are opened, the atmosphere flows into the air inlet side, and when the compression force of the pressure regulating spring and the pressure of the air inlet side reach balance, the vacuum pressure of the air inlet side is set. If the vacuum degree of the air inlet side is lower than a set value (changes towards atmospheric pressure), the pressure regulating spring force and the air inlet side pressure of the vacuum chamber lose balance, the diaphragm assembly is pushed down, the valve core and the valve core seat are opened, the air outlet side and the air inlet side are communicated, the vacuum degree of the air inlet side is increased, and when the compression force of the pressure regulating spring and the air inlet side pressure reach balance, the vacuum pressure of the air inlet side is set.
Particularly, the diaphragm assembly comprises a diaphragm seat and a diaphragm arranged on the diaphragm seat, a through hole is formed in the lower end of the diaphragm seat, the upper end of the valve core penetrates through the through hole, and the valve core is in clamping fit with the lower diaphragm seat. The diaphragm seat is arranged on the diaphragm and plays a supporting role, so that the service life of the diaphragm is prolonged, the diaphragm seat is connected with the valve core in a clamping and matching mode, the valve core and the lower diaphragm seat are convenient to assemble, and reliable transmission between the valve core and the diaphragm is also ensured.
Particularly, the adjusting part including rotate the hand wheel of setting on the valve gap, set up pressure regulating screw, the pressure regulating nut of setting on pressure regulating screw, the pressure regulating spring of suit on pressure regulating screw between hand wheel and diaphragm seat, pressure regulating spring's one end contradict on pressure regulating nut, pressure regulating spring's the other end contradict on the upper end of diaphragm seat. When the operation, operating personnel rotates the hand wheel, and the hand wheel drives the action of pressure regulating screw rod, and the compressible pressure regulating spring of pressure regulating nut on the pressure regulating screw rod to the pressure regulating spring can be adjusted the pressure value of diaphragm subassembly, thereby realizes the regulation of this vacuum relief pressure valve's pressure value, and pressure regulating screw rod and pressure regulating nut threaded connection cooperate, thereby can realize that the pressure regulating nut finely tunes the pressure regulating spring, is favorable to improving the pressure regulation precision of this vacuum relief pressure valve.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
As shown in fig. 1, an embodiment of the present invention is a vacuum pressure reducing valve, including a valve body 10, a valve cap 11 disposed at the upper end of the valve body 10, a diaphragm assembly 20 disposed between the valve body 10 and the valve cap 11, and an adjusting assembly 30, wherein the valve body 10 is respectively provided with an air inlet 101 and an air outlet 102 communicated with an inner cavity of the valve body 10, the lower end of the valve body 10 is provided with a locking cover 12, a valve core assembly 40 is disposed between the locking cover 12 and the diaphragm assembly 20, an air chamber 103 is formed between the diaphragm assembly 20 and the valve body 10, a vacuum chamber 104 is formed between the diaphragm assembly 20 and the valve cap 11, the adjusting assembly 30 is disposed in the vacuum chamber 104, the valve core assembly 40 includes a valve core seat 41 disposed in the locking cover 12, a valve core 42 disposed between the valve core seat 41 and the diaphragm assembly 20, and a balance spring 43 disposed between the locking cover 12 and the valve core seat 41, a gasket 44 and a sealing ring 45 are respectively arranged between the valve core seat 41 and the locking cover 12, and form a sealing fit between the valve core seat 41 and the locking cover 12.
The diaphragm assembly 20 comprises a diaphragm seat 21 and a diaphragm 22 arranged on the diaphragm seat 21, a through hole 211 is formed in the lower end of the diaphragm seat 21, and the upper end of the valve core 42 penetrates through the through hole 211 to form clamping fit of the valve core 42 and the lower diaphragm seat 21. The diaphragm seat is arranged on the diaphragm and plays a supporting role, so that the service life of the diaphragm is prolonged, the diaphragm seat is connected with the valve core in a clamping and matching mode, the valve core and the lower diaphragm seat are convenient to assemble, and reliable transmission between the valve core and the diaphragm is also ensured. Adjusting part 30 including rotate the hand wheel 31 that sets up on valve gap 11, set up pressure regulating screw 32 between hand wheel 31 and diaphragm seat 21, set up pressure regulating nut 33, the suit on pressure regulating screw 32, pressure regulating spring 34 of pressure regulating spring 34's one end conflict on pressure regulating nut, pressure regulating spring 34's the other end conflict on the upper end of diaphragm seat 21. When the operation, operating personnel rotates the hand wheel, and the hand wheel drives the action of pressure regulating screw rod, and the compressible pressure regulating spring of pressure regulating nut on the pressure regulating screw rod to the pressure regulating spring can be adjusted the pressure value of diaphragm subassembly, thereby realizes the regulation of this vacuum relief pressure valve's pressure value, and pressure regulating screw rod and pressure regulating nut threaded connection cooperate, thereby can realize that the pressure regulating nut finely tunes the pressure regulating spring, is favorable to improving the pressure regulation precision of this vacuum relief pressure valve.
The vacuum pressure reducing valve has the advantages of simple structure, stable and reliable performance and convenient operation, when the vacuum pressure reducing valve works, the hand wheel of the pressure regulating assembly is rotated clockwise, the pressure regulating spring enables the diaphragm and the valve core to be pushed down, the air outlet connector side is communicated with the air inlet connector side, the vacuum degree of the air inlet connector side is increased (changed to absolute vacuum), the vacuum pressure of the air inlet connector side enters a vacuum chamber through an air passage, acts on the diaphragm assembly and is balanced with the compression force of the pressure regulating spring, and then the air inlet connector side pressure is set. If the vacuum degree of the air inlet side is higher than a set value (changes to absolute vacuum), the pressure of the pressure regulating spring and the pressure of the air inlet side of the vacuum chamber lose balance, the diaphragm assembly is pulled upwards, the valve core and the valve core seat are closed, the diaphragm seat and the valve core are opened, the atmosphere flows into the air inlet side, and when the compression force of the pressure regulating spring and the pressure of the air inlet side reach balance, the vacuum pressure of the air inlet side is set. If the vacuum degree of the air inlet side is lower than a set value (changes towards atmospheric pressure), the pressure regulating spring force and the air inlet side pressure of the vacuum chamber lose balance, the diaphragm assembly is pushed down, the valve core and the valve core seat are opened, the air outlet side and the air inlet side are communicated, the vacuum degree of the air inlet side is increased, and when the compression force of the pressure regulating spring and the air inlet side pressure reach balance, the vacuum pressure of the air inlet side is set.
Claims (3)
1. The utility model provides a vacuum pressure reducing valve, includes the valve body, sets up at the valve gap of valve body upper end, sets up diaphragm assembly, the adjusting part between valve body and valve gap, its characterized in that: the valve body on be provided with the interface of admitting air, the interface of giving vent to anger that is linked together with the inner chamber of valve body respectively, the lower extreme of valve body be provided with the locking lid, locking lid and diaphragm subassembly between be provided with the case subassembly, diaphragm subassembly and valve body between be formed with the vacuum chamber, the adjusting part set up in the vacuum chamber, the case subassembly including set up the case seat in the locking lid, set up case, the balance spring of setting between locking lid and case seat between case seat and diaphragm subassembly, case seat and locking lid between be provided with gasket, sealing washer respectively, and constitute the sealed cooperation between case seat and the locking lid.
2. The vacuum relief valve of claim 1, wherein: the diaphragm assembly comprises a diaphragm seat and a diaphragm arranged on the diaphragm seat, a through hole is formed in the lower end of the diaphragm seat, the upper end of the valve core penetrates through the through hole, and the valve core is in clamping fit with the lower diaphragm seat.
3. The vacuum pressure reducing valve according to claim 1 or 2, wherein: the adjusting part including rotate the hand wheel that sets up on the valve gap, set up pressure regulating screw, pressure regulating nut, the suit of setting on pressure regulating screw on hand wheel and diaphragm seat on the pressure regulating screw, pressure regulating spring's one end conflict on pressure regulating nut, pressure regulating spring's the other end conflict on the upper end of diaphragm seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921319212.0U CN210266052U (en) | 2019-08-14 | 2019-08-14 | Vacuum pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921319212.0U CN210266052U (en) | 2019-08-14 | 2019-08-14 | Vacuum pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210266052U true CN210266052U (en) | 2020-04-07 |
Family
ID=70017330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921319212.0U Expired - Fee Related CN210266052U (en) | 2019-08-14 | 2019-08-14 | Vacuum pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210266052U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066035A (en) * | 2020-08-25 | 2020-12-11 | 济南华信自动化工程有限公司 | Vacuum pump protection valve |
-
2019
- 2019-08-14 CN CN201921319212.0U patent/CN210266052U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066035A (en) * | 2020-08-25 | 2020-12-11 | 济南华信自动化工程有限公司 | Vacuum pump protection valve |
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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: 20200407 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |