CN216078461U - Minimum pressure valve for compressor - Google Patents
Minimum pressure valve for compressor Download PDFInfo
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- CN216078461U CN216078461U CN202122619597.6U CN202122619597U CN216078461U CN 216078461 U CN216078461 U CN 216078461U CN 202122619597 U CN202122619597 U CN 202122619597U CN 216078461 U CN216078461 U CN 216078461U
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Abstract
The utility model belongs to the technical field of compressors, and provides a minimum pressure valve for a compressor, which comprises: the valve comprises a valve body, wherein an air inlet is formed in the bottom of the valve body, an air outlet is formed in one side of the bottom of the valve body, a valve core is connected inside the valve body in a sliding mode, the valve core is connected between the air inlet and the air outlet in a sliding mode, a valve cover is installed at the top of the valve body, a central through hole is formed in the middle of the valve cover, an adjusting screw is arranged at the central through hole, one end of the adjusting screw stretches into the valve body, and the adjusting screw is connected with the valve core through a spring. Compared with the prior art, the utility model has the advantages that: the valve body is arranged into the valve body and the valve cover, so that the valve body is convenient to disassemble and maintain; an adjusting screw for controlling the pressure is arranged on the valve cover, so that the adjustment is convenient when the pressure of the spring is reduced, the normal pressure value is controlled, and the effective separation of the compressed air and the lubricating oil is ensured; the original three valves and three springs are replaced by one valve and one spring, so that the valve is simple in structure, convenient to machine and enhanced in reliability.
Description
Technical Field
The utility model belongs to the technical field of compressors, and particularly relates to a minimum pressure valve for a compressor.
Background
The minimum pressure valve of the oil injection screw compressor has the functions of ensuring that the air pressure of the air storage cylinder is not too low when the compressor works, reducing the pressure difference between the air outlet of the compressor and the air storage cylinder, and prolonging the separation time of lubricating oil and compressed air so as to reduce the loss of the lubricating oil.
The minimum pressure valve of the oil injection screw compressor is set to different opening pressures by adjusting the tightness of the spring through the three bolts, and the situation that the opening pressure is unstable when the minimum pressure valve is actually used is caused because the three bolts cannot guarantee that the adjusting distance is consistent when the minimum pressure valve is adjusted at each time.
SUMMERY OF THE UTILITY MODEL
The utility model provides a minimum pressure valve for a compressor, aiming at the current situation of the prior art.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a minimum pressure valve for a compressor is provided, including: the valve comprises a valve body, wherein an air inlet is formed in the bottom of the valve body, an air outlet is formed in one side of the bottom of the valve body, a valve core is connected inside the valve body in a sliding mode and is connected between passages of the air inlet and the air outlet in a sliding mode, a valve cover is installed at the top of the valve body, a central through hole is formed in the middle of the valve cover, an adjusting screw is arranged at the central through hole, one end of the adjusting screw extends into the valve body, and the adjusting screw is connected with the valve core through a spring.
Compared with the prior art, the utility model has the advantages that: when the pressure at the air inlet is lower than the preset pressure value, the valve core is in a closed position under the tension of the spring, and the gas cannot be discharged from the air outlet; when the pressure at the air inlet rises to a preset pressure value, the gas pushes the valve core to rise, the valve core is opened by overcoming the tension of the spring, and the gas enters the gas transmission pipeline through the air outlet; when the air displacement is increased, the pressure at the air inlet is reduced, and the valve core is under the tension action of the spring to reduce the opening stroke; when the gas pressure at the air inlet is lower than the preset value, the valve is closed, so that a certain pressure is kept at the air outlet. One end of a spring abuts against the valve core, the other end of the spring abuts against the lower end of an adjusting screw through a spring seat, the adjusting screw is screwed in a central through hole of the valve cover, the tension of the spring can be changed by rotating the adjusting screw, when the adjusting screw rotates rightwards, the tension of the spring is increased, and the controlled pressure is increased; when rotating to the left, the spring force is weakened and the control pressure is reduced. The valve body is arranged into the valve body and the valve cover, so that the valve body is convenient to disassemble and maintain; an adjusting screw for controlling the pressure is arranged on the valve cover, so that the adjustment is convenient when the pressure of the spring is reduced, the normal pressure value is controlled, and the effective separation of the compressed air and the lubricating oil is ensured; the original three valves and three springs are replaced by one valve and one spring, so that the valve is simple in structure, convenient to machine and enhanced in reliability.
In the above minimum pressure valve for a compressor, a fixing nut is provided between the adjusting screw and the central through hole of the valve cover. The fixing nut is used for assisting the fixed connection of the adjusting screw, so that the adjusting screw is more stably connected with the valve cover, and the use reliability is ensured.
In the above minimum pressure valve for a compressor, a spring seat is provided at a lower end of the adjusting screw, and the spring is connected to the spring seat. The spring seat is connected to the lower end of the adjusting screw, and the spring is installed through the spring seat, so that the stability of spring connection is guaranteed.
In the above-mentioned minimum pressure valve for a compressor, the valve cover is provided with a balance hole. Set up the balancing hole on the valve gap, play the too big problem of balanced valve body internal pressure, guarantee the life of valve body.
In the above-mentioned minimum pressure valve for compressor, the valve gap with be equipped with the gasket between the valve body, around the valve gap with through set screw connection between the valve body, guarantee the steadiness of being connected between valve gap and the valve body.
In the above minimum pressure valve for a compressor, a seal ring groove is formed in the outer side of the valve core, and a seal ring is arranged in the seal ring groove. And a sealing ring is arranged on the periphery of the valve core to prevent air leakage.
Drawings
Fig. 1 is a schematic view of the overall structure of one embodiment of the present invention.
In the figure, 1, a valve body; 2. an air inlet; 3. an exhaust port; 4. a valve core; 5. a valve cover; 6. an adjusting screw; 7. a spring; 8. fixing a nut; 9. a spring seat; 10. a balance hole; 11. a gasket; 12. a set screw; 13. and a seal ring groove.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, a minimum pressure valve for a compressor according to the present invention includes: valve body 1, the bottom of valve body 1 is equipped with air inlet 2, bottom one side of valve body 1 is equipped with gas vent 3, the inside sliding connection of valve body 1 has case 4, 4 sliding connection of case are between the passageway of air inlet 2 and gas vent 3, valve gap 5 is installed at the top of valve body 1, the centre of valve gap 5 is equipped with central through-hole, central through-hole department is equipped with adjusting screw 6, adjusting screw 6's one end stretches into in the valve body 1, link to each other through spring 7 between adjusting screw 6 and the case 4. The valve body is arranged into the valve body 1 and the valve cover 5, so that the valve body is convenient to disassemble and maintain; an adjusting screw 6 for controlling pressure is arranged on the valve cover 5, so that the pressure of the spring 7 can be conveniently adjusted when being reduced, a normal pressure value can be controlled, and the compressed air and the lubricating oil can be effectively separated; the original three valves and three springs are replaced by one valve and one spring 7, so that the valve is simple in structure, convenient to machine and enhanced in reliability.
A fixing nut 8 is arranged between the adjusting screw 6 and the central through hole of the valve cover 5. The fixing nut 8 is used for assisting in fixing and connecting the adjusting screw 6, so that the adjusting screw 6 is more stably connected with the valve cover 5, and the use reliability is guaranteed.
The lower end of the adjusting screw 6 is provided with a spring seat 9, and the spring 7 is connected to the spring seat 9. The spring seat 9 is connected to the lower end of the adjusting screw 6, and the spring 7 is installed by the spring seat 9, so that the connection stability of the spring 7 is ensured.
The valve cover 5 is provided with a balance hole 10. The valve cover 5 is provided with the balance hole 10, so that the problem of overlarge pressure in the valve body 1 is solved, and the service life of the valve body 1 is ensured.
A gasket 11 is arranged between the valve cover 5 and the valve body 1, the periphery of the valve cover 5 is connected with the valve body 1 through a fixing screw 12, and the stability of connection between the valve cover 5 and the valve body 1 is guaranteed.
The outer side of the valve core 4 is provided with a sealing ring groove 13, and a sealing ring is arranged in the sealing ring groove 13. And a sealing ring is arranged at the periphery of the valve core 4 to prevent air leakage.
The working principle is as follows: when the pressure at the air inlet 2 is lower than the preset pressure value, the valve core 4 is in a closed position under the tension of the spring 7, and the air cannot be exhausted from the air outlet 3; when the pressure at the air inlet 2 rises to a preset pressure value, the air pushes the valve core 4 to rise, the valve core is opened by overcoming the tension of the spring 7, and the air enters the air transmission pipeline through the air outlet 3; when the exhaust volume is increased, the pressure at the air inlet 2 is reduced, and the valve core 4 is under the tension action of the spring 7 to reduce the opening stroke; when the gas pressure at the gas inlet 2 is lower than the preset value, the valve is closed, so that a certain pressure is maintained at the gas outlet 3. One end of a spring 7 abuts against a valve core 4, the other end of the spring abuts against the lower end of an adjusting screw 6 through a spring 7 seat, the adjusting screw 6 is screwed in a central through hole of a valve cover 5, the tension of the spring 7 can be changed by rotating the adjusting screw 6, when the adjusting screw rotates rightwards, the tension of the spring 7 is increased, and the controlled pressure is increased; when the device is rotated to the left, the force of the spring 7 is weakened, and the control pressure is reduced.
The specific embodiments described herein are merely illustrative of the utility model. Various modifications, additions and substitutions for the described embodiments may be made by those skilled in the art without departing from the scope of the utility model as defined in the accompanying claims.
Claims (6)
1. A minimum pressure valve for a compressor, comprising: the valve body (1), the bottom of valve body (1) is equipped with air inlet (2), bottom one side of valve body (1) is equipped with gas vent (3), the inside sliding connection of valve body (1) has case (4), case (4) sliding connection be in between the passageway of air inlet (2) and gas vent (3), valve gap (5) are installed at the top of valve body (1), the centre of valve gap (5) is equipped with central through-hole, central through-hole department is equipped with adjusting screw (6), the one end of adjusting screw (6) stretches into in the valve body (1), adjusting screw (6) with link to each other through spring (7) between case (4).
2. Minimum pressure valve for compressors according to claim 1, characterized in that a fixing nut (8) is provided between the adjusting screw (6) and the central through hole of the valve cover (5).
3. The minimum pressure valve for a compressor according to claim 1, wherein a spring seat (9) is provided at a lower end of the adjusting screw (6), and the spring (7) is connected to the spring seat (9).
4. A minimum pressure valve for a compressor according to claim 1, wherein the valve cover (5) is provided with a balance hole (10).
5. The minimum pressure valve for the compressor is characterized in that a gasket (11) is arranged between the valve cover (5) and the valve body (1), and the periphery of the valve cover (5) is connected with the valve body (1) through a fixing screw (12).
6. The minimum pressure valve for a compressor according to claim 1, wherein a seal ring groove (13) is formed on an outer side of the valve body (4), and a seal ring is provided in the seal ring groove (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122619597.6U CN216078461U (en) | 2021-10-29 | 2021-10-29 | Minimum pressure valve for compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122619597.6U CN216078461U (en) | 2021-10-29 | 2021-10-29 | Minimum pressure valve for compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216078461U true CN216078461U (en) | 2022-03-18 |
Family
ID=80642670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122619597.6U Active CN216078461U (en) | 2021-10-29 | 2021-10-29 | Minimum pressure valve for compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216078461U (en) |
-
2021
- 2021-10-29 CN CN202122619597.6U patent/CN216078461U/en active Active
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