CN215487866U - Pressure reducing valve with countercurrent function - Google Patents
Pressure reducing valve with countercurrent function Download PDFInfo
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- CN215487866U CN215487866U CN202122309506.9U CN202122309506U CN215487866U CN 215487866 U CN215487866 U CN 215487866U CN 202122309506 U CN202122309506 U CN 202122309506U CN 215487866 U CN215487866 U CN 215487866U
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Abstract
The utility model relates to a pressure reducing valve with a countercurrent function, which comprises a valve body, a valve cover, a locking cover, a diaphragm, a pressure regulating assembly, a valve core assembly, a pressure gauge and a countercurrent assembly, wherein a valve cavity is arranged in the valve body, an air inlet and an air outlet which are communicated with the valve cavity are respectively arranged on the valve body, a diaphragm pressure cavity is formed between the diaphragm and the valve body as well as between the diaphragm and the valve core assembly, the countercurrent assembly comprises a countercurrent cover body, a countercurrent valve seat, a countercurrent valve core and a countercurrent spring, a countercurrent cavity is formed between the countercurrent valve seat and the countercurrent cover body, the reverse flow valve core is movably arranged in the reverse flow cavity, the valve body is provided with a diaphragm pressure hole communicated with the diaphragm cavity pressure cavity, the reverse flow valve core seat is provided with a reverse flow hole corresponding to the reverse flow valve core and used for communicating the diaphragm pressure hole with the reverse flow cavity, and the valve body is provided with an air inlet pressure hole communicated between the reverse flow cavity and the air inlet. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly and countercurrent function.
Description
Technical Field
The utility model relates to the technical field of pneumatic elements, in particular to a pressure reducing valve with a reverse flow function.
Background
The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically kept stable by relying on the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction. Then, the fluctuation of the pressure behind the valve is balanced with the spring force by means of the regulation of the control and regulation system, so that the pressure behind the valve is kept constant within a certain error range. Most of the existing pressure reducing valves do not have a reverse flow function and cannot meet the use requirements of customers, and the existing pressure reducing valves also have the defects of complex structure, unreliable performance and inconvenient assembly.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides the pressure reducing valve with the reverse flow function, which has the advantages of simple structure, stable and reliable performance and convenient and fast assembly.
In order to achieve the purpose, the utility model adopts a pressure reducing valve with a countercurrent function, which comprises a valve body, a valve cover arranged at one end of the valve body, a locking cover arranged at the other end of the valve body, a diaphragm arranged between the valve cover and the valve body, a pressure regulating assembly arranged on the valve cover, a valve core assembly arranged between the locking cover and the valve body, a pressure gauge and a countercurrent assembly, wherein a valve cavity is arranged in the valve body, an air inlet and an air outlet which are communicated with the valve cavity are respectively arranged on the valve body, a diaphragm pressure cavity is formed between the diaphragm and the valve body as well as between the diaphragm and the valve core assembly, the countercurrent assembly comprises a countercurrent cover body arranged at one side of the valve body, a countercurrent valve seat arranged in the countercurrent cover body, a countercurrent valve core arranged between the countercurrent valve seat and the countercurrent valve core, a countercurrent cavity is formed between the countercurrent valve seat and the countercurrent cover body, and the countercurrent valve core is movably arranged in the countercurrent cavity, the valve body on be provided with the diaphragm pressure hole that is linked together with the diaphragm pressure chamber, the valve core case that flows against the current on correspond the position of the valve core that flows against the current and be provided with the refluence hole that is used for communicateing diaphragm pressure hole and refluence chamber, the valve body on be provided with the pressure hole of admitting air of intercommunication between adverse current chamber and air inlet.
The beneficial effect of above-mentioned structure is: be provided with the subassembly against current on the valve body, this is organized the price against current and can realize the function against current of this relief pressure valve, in operation, when air inlet pressure cuts off the exhaust, at this moment, the pressure of diaphragm pressure chamber is greater than air inlet pressure, the case of the contrary flow is opened, and the atmospheric pressure of diaphragm pressure chamber enters into the air inlet through the air inlet pressure hole, atmospheric pressure is discharged from the air inlet, thereby the pressure drop of diaphragm pressure chamber, the pressure regulating subassembly promotes the diaphragm and moves downwards, the diaphragm promotes valve core subassembly action, the case subassembly is opened with the valve body, thereby the atmospheric pressure of gas outlet is discharged to the air inlet, thereby realize the function against current of this relief pressure valve. Therefore, the pressure reducing valve has the advantages of simple structure, stable and reliable performance, convenience and quickness in assembly and countercurrent function.
Particularly, the valve core assembly comprises a valve seat arranged between the locking cover and the valve body, a valve core movably arranged on the valve seat, and a spring arranged between the valve core and the valve seat, wherein one end of the valve core extends into the diaphragm pressure cavity and abuts against the diaphragm, and a sealing ring is arranged between the valve core and the valve body. The valve core assembly is designed in an integrated modular structure, so that the valve core assembly and the valve body can be assembled conveniently and rapidly.
Particularly, the pressure regulating subassembly including rotate set up the regulation cap on the valve gap, set up in the valve gap and with adjust cap linkage complex regulation pole, set up the pressure regulating spring between regulation pole and diaphragm, the regulation pole on correspond pressure regulating spring department and be provided with the locating part, pressure regulating spring's one end contradict on the locating part, the diaphragm on correspond pressure regulating spring department and be provided with the constant head tank, pressure regulating spring's other end block in the constant head tank. The adjusting cap is rotated, the adjusting cap can drive the adjusting rod to rotate, the adjusting rod compresses the pressure adjusting spring, and the pressure adjusting spring pushes the diaphragm, so that the pressure adjusting function of the pressure reducing valve can be realized, the operation by a user is convenient, and the operation is more convenient.
Drawings
FIG. 1 is a top view of an embodiment of the present invention.
Fig. 2 is an internal structural view of the embodiment of the present invention.
FIG. 3 is a block diagram of a flow reversing assembly according to an embodiment of the utility model.
Detailed Description
As shown in fig. 1 to 3, an embodiment of the present invention is a pressure reducing valve with a backflow function, including a valve body 10, a valve cover 11 disposed at one end of the valve body 10, a locking cover 12 disposed at the other end of the valve body 10, a diaphragm 13 disposed between the valve cover 11 and the valve body 10, a pressure regulating assembly 14 disposed on the valve cover 11, a valve core assembly 15 disposed between the locking cover 12 and the valve body 10, a pressure gauge 16, and a backflow assembly 17, wherein a valve cavity 100 is disposed in the valve body 10, an air inlet 101 and an air outlet 102 communicated with the valve cavity 100 are respectively disposed on the valve body 10, a diaphragm pressure chamber 1000 is formed between the diaphragm 13 and the valve body 10, and the valve core assembly 15, the backflow assembly 17 includes a backflow cover body 171 disposed at one side of the valve body 10, a backflow valve seat 172 disposed in the backflow cover body 171, a backflow valve core 173, and a backflow spring 174 disposed between the backflow valve seat 172 and the backflow valve core 173, a reverse flow cavity 170 is formed between the reverse flow valve seat 172 and the reverse flow cover 171, the reverse flow valve core 173 is movably arranged in the reverse flow cavity 170, the valve body 10 is provided with a membrane pressure hole 103 communicated with the membrane pressure cavity 1000, a reverse flow hole 1721 for communicating the membrane pressure hole 103 with the reverse flow cavity 170 is arranged on the reverse flow valve core seat 172 corresponding to the reverse flow valve core 173, and the valve body 10 is provided with an air inlet pressure hole 104 communicated between the reverse flow cavity 170 and the air inlet 101.
As shown in fig. 2, the valve core assembly 15 includes a valve seat 151 disposed between the locking cover 12 and the valve body 10, a valve core 152 movably disposed on the valve seat 151, and a spring 153 disposed between the valve core 152 and the valve seat 151, wherein one end of the valve core 152 extends into the diaphragm pressure chamber 1000 and abuts against the diaphragm 13, and a sealing ring 18 is disposed between the valve core 152 and the valve body 10. The valve core assembly is designed in an integrated modular structure, so that the valve core assembly and the valve body can be assembled conveniently and rapidly. The pressure regulating assembly 14 including rotate set up the regulation cap 141 on the valve gap 11, set up in the valve gap 11 and with regulation cap linkage complex adjust pole 142, set up the pressure regulating spring 143 between adjusting pole 142 and diaphragm 13, the regulation pole 142 on correspond pressure regulating spring 143 department and be provided with locating part 1421, pressure regulating spring 143 one end contradict on locating part 1421, diaphragm 13 on correspond pressure regulating spring 143 department and be provided with constant head tank 131, pressure regulating spring 143 the other end block in constant head tank 131. The adjusting cap is rotated, the adjusting cap can drive the adjusting rod to rotate, the adjusting rod compresses the pressure adjusting spring, and the pressure adjusting spring pushes the diaphragm, so that the pressure adjusting function of the pressure reducing valve can be realized, the operation by a user is convenient, and the operation is more convenient.
Be provided with the subassembly against current on the valve body, this is organized the price against current and can realize the function against current of this relief pressure valve, in operation, when air inlet pressure cuts off the exhaust, at this moment, the pressure of diaphragm pressure chamber is greater than air inlet pressure, the case of the contrary flow is opened, and the atmospheric pressure of diaphragm pressure chamber enters into the air inlet through the air inlet pressure hole, atmospheric pressure is discharged from the air inlet, thereby the pressure drop of diaphragm pressure chamber, the pressure regulating subassembly promotes the diaphragm and moves downwards, the diaphragm promotes valve core subassembly action, the case subassembly is opened with the valve body, thereby the atmospheric pressure of gas outlet is discharged to the air inlet, thereby realize the function against current of this relief pressure valve. Therefore, the pressure reducing valve has the advantages of simple structure, stable and reliable performance, convenience and quickness in assembly and countercurrent function.
Claims (3)
1. The utility model provides a take relief pressure valve of function against current, includes the valve body, sets up the valve gap that serves at the valve body, sets up locking lid on the other end of valve body, sets up diaphragm between valve gap and valve body, sets up pressure regulating subassembly on the valve gap, sets up case subassembly, manometer, the subassembly against the current between locking lid and valve body, its characterized in that: the valve body in be provided with the valve pocket, be provided with air inlet, the gas outlet that is linked together with the valve pocket on the valve body respectively, diaphragm and valve body, case subassembly between be formed with the diaphragm pressure chamber, the subassembly against current including set up the lid against current on valve body one side, set up the disk seat, the valve core that flows against the current in the lid against the current, set up the spring against the current between disk seat and the valve core against the current, the disk seat against the current and the lid against the current between be formed with the counter current chamber against the current, the activity of valve core against the current set up at the intracavity against the current, the valve body on be provided with the diaphragm pressure hole that is linked together with the diaphragm pressure chamber, the valve core seat against the current on correspond the valve core against the current department and be provided with the upstream hole that is used for communicateing diaphragm pressure hole and counter current chamber, the valve body on be provided with the intercommunication at the pressure hole that admits air between chamber against the current and air inlet.
2. The pressure reducing valve with a reverse flow function according to claim 1, wherein: the valve core assembly comprises a valve seat arranged between the locking cover and the valve body, a valve core movably arranged on the valve seat and a spring arranged between the valve core and the valve seat, one end of the valve core extends into the diaphragm pressure cavity and abuts against the diaphragm, and a sealing ring is arranged between the valve core and the valve body.
3. The pressure reducing valve with a reverse flow function according to claim 1 or 2, wherein: the pressure regulating subassembly including rotate set up the regulation cap on the valve gap, set up in the valve gap and with adjust cap linkage complex regulation pole, set up the pressure regulating spring between regulation pole and diaphragm, the regulation pole on correspond pressure regulating spring department and be provided with the locating part, pressure regulating spring's one end contradict on the locating part, the diaphragm on correspond pressure regulating spring department and be provided with the constant head tank, pressure regulating spring's other end block in the constant head tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122309506.9U CN215487866U (en) | 2021-09-22 | 2021-09-22 | Pressure reducing valve with countercurrent function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122309506.9U CN215487866U (en) | 2021-09-22 | 2021-09-22 | Pressure reducing valve with countercurrent function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215487866U true CN215487866U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122309506.9U Active CN215487866U (en) | 2021-09-22 | 2021-09-22 | Pressure reducing valve with countercurrent function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215487866U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114588566A (en) * | 2022-01-20 | 2022-06-07 | 抚顺华腾防护装备制造有限公司 | Positive pressure oxygen respirator pressure differential regulation and control type automatic oxygen supply device |
-
2021
- 2021-09-22 CN CN202122309506.9U patent/CN215487866U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114588566A (en) * | 2022-01-20 | 2022-06-07 | 抚顺华腾防护装备制造有限公司 | Positive pressure oxygen respirator pressure differential regulation and control type automatic oxygen supply device |
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