CN217355710U - Push/balance safety valve - Google Patents
Push/balance safety valve Download PDFInfo
- Publication number
- CN217355710U CN217355710U CN202221093551.3U CN202221093551U CN217355710U CN 217355710 U CN217355710 U CN 217355710U CN 202221093551 U CN202221093551 U CN 202221093551U CN 217355710 U CN217355710 U CN 217355710U
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- valve body
- valve
- spring
- valve core
- inner cavity
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Abstract
The utility model discloses a pass/balanced relief valve, including valve body and case subassembly, the case subassembly includes to constitute such as joint, sealing ring #1, sealing ring #2, case, spring holder, outer reset spring, interior reset spring, holding ring, adjusting bolt, round pin for threaded connection with the valve body right-hand member. One end of the joint is provided with an opening A, two groups of liquid guide holes B are uniformly distributed at the right end of the valve body, and the opening A and the opening B are communicated through the liquid guide holes in the inner cavity of the valve body. The valve core is pushed to move by the pressure of the high-pressure liquid at the position of the position A to overcome the spring, and when the liquid guide hole of the valve core moves to the position of the position B, pressure relief operation is carried out, so that the pressure in the hydraulic system is gradually recovered to be within the rated working pressure. The utility model discloses a lapse/balanced relief valve DN12 compact structure, sealing performance are reliable, stable performance is reliable, long service life.
Description
Technical Field
The utility model belongs to relate to colliery hydraulic pressure field, concretely relates to pass/balanced relief valve.
Background
The push/balance safety valve is a hydraulic pressure maintaining element with high working pressure specially designed for a mining hydraulic support, and is used for controlling a coal mine hydraulic support system, controlling the actual working resistance of the support and enabling the actual working resistance not to exceed an allowable value.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a compact structure, sealing performance is reliable, stable performance is reliable, long service life's lapse/balanced relief valve.
In order to achieve the purpose, the push/balance safety valve comprises a valve body and a valve core assembly, wherein the valve core assembly comprises a connector, a sealing ring #1, a sealing ring #2, a valve core, a spring seat, an outer reset spring, an inner reset spring, a spring positioning ring, an adjusting bolt, a pin and the like, and the connector is in threaded connection with the right end of the valve body. One end of the joint is provided with an A port, the right end of the valve body is uniformly provided with two groups of liquid guide holes B port, the A port and the B port are communicated through the liquid guide holes in the inner cavity of the valve body, an adjusting bolt is in threaded connection with the inner cavity on the left side of the valve body and is screwed into the valve body to be fixed together with a through hole and a pin, the right side of the adjusting bolt is provided with a spring positioning ring, the right side of the spring positioning ring is respectively provided with an inner reset spring and an outer reset spring, the right ends of the two groups of reset springs are in contact with a spring seat, the right side of the spring seat is attached to a boss on the inner cavity on the right side of the valve body, the joint is in threaded connection with the inner cavity on the right side of the valve body, the left end of the joint is uniformly provided with the liquid guide holes, the left side of the joint is provided with an inner cavity and is connected with the A port, a sealing ring #1 and a sealing ring #2 are placed in the inner cavity from right to left, a valve core is placed between the sealing ring #1 and the sealing ring #2, and a boss is arranged at the left end of the valve core, the maximum displacement distance of the valve core is limited, two groups of uniformly distributed liquid guide holes are arranged on the valve core, and an inner cavity is arranged in the middle of the valve core.
The push/balance safety valve is provided with two groups of reset springs, so that the safety valve can meet higher working pressure and is suitable for more working conditions.
The push/balance safety valve is provided with two groups of uniformly distributed liquid guide holes on the right side of the valve body, so that the push/balance safety valve can operate at a larger working flow.
The push/balance safety valve performs proper selection and reasonable clearance fit on the materials of the spring seat, the spring positioning ring and the valve core, and ensures that the safety valve moves flexibly and reliably.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of the present invention;
fig. 2 is a schematic view of a hydraulic principle of the embodiment of the present invention.
Labeled in the figure as: 10. a valve body; 20. a valve core assembly; 21. a joint; 22. seal ring # 1; 23. seal ring # 2; 24. a valve core; 25. a spring seat; 26. an outer return spring; 27. an inner return spring; 28. a spring positioning ring; 29. a pin; 30. and adjusting the bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
A push/balance safety valve comprises a valve body 10 and a valve core assembly 20, wherein the valve core assembly 20 comprises a joint 21, a sealing ring # 122, a sealing ring # 223, a valve core 24, a spring seat 25, an outer return spring 26, an inner return spring 27, a spring positioning ring 28, an adjusting bolt 30, a pin 29 and the like, wherein the joint is in threaded connection with the right end of the valve body 10. One end of the joint 21 is provided with an A port, the right end of the valve body 10 is uniformly provided with two groups of B ports of liquid guide holes, the A port is communicated with the B ports through the liquid guide holes in the inner cavity of the valve body 10, an adjusting bolt 30 is in threaded connection with the inner cavity at the left side of the valve body 10 and is screwed into a proper position to be jointly provided with a through hole and fixed by a driving pin 29, the right side of the adjusting bolt 30 is provided with a spring positioning ring 28, the right side of the spring positioning ring 28 is respectively provided with an inner reset spring 27 and an outer reset spring 26, the right ends of the two groups of reset springs are both contacted with a spring seat 25, the right side of the spring seat 25 is jointed with a boss of the inner cavity of the valve body 10, the joint 21 is in threaded connection with the inner cavity at the right side of the valve body 10, the left end of the joint 21 is uniformly provided with the liquid guide holes, the left side of the joint 21 is provided with the inner cavity and is connected with the A port, a sealing ring 122 and a sealing ring # 223 are sequentially arranged in the inner cavity from right to left, a valve core 24 is arranged between the sealing ring # 122 and the sealing ring # 223, the left end of the valve core 24 is provided with a boss to limit the maximum displacement distance of the valve core 24, the valve core 24 is provided with two groups of uniformly distributed liquid guide holes, and the middle of the valve core 24 is provided with an inner cavity.
The working principle of the push/balance safety valve is as follows: the utility model discloses use the emulsion as working medium usually, when the high-pressure liquid pressure that A mouth department came reached the specified value, high-pressure liquid pushed case 24, case 24 can promote spring holder 25 and overcome outer reset spring 26 and interior reset spring 27's spring force and move left, when the drain hole of case 24 and the drain hole B mouth of valve body 10 communicated with each other, high-pressure liquid can get into from the A mouth that connects 21, lead the drain hole through case 24, sealing ring # 122 leads the drain hole, discharge from valve body 10 drain hole B mouth, realize the pressure release. When the liquid pressure at the port A is reduced to a specific value and the hydraulic pressure is smaller than the elastic force of the outer return spring 26 and the inner return spring 27, the spring overcomes the hydraulic pressure to push the spring seat 25 and the valve core 24 to move rightwards, so that the liquid guide hole of the valve core 24 leaves the port B, and the pressure relief is stopped.
The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. Various insubstantial improvements are made by adopting the method conception and the technical proposal of the utility model; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.
Claims (2)
1. A push/balance safety valve comprises a valve body and a valve core assembly, and is characterized in that the valve core assembly comprises a connector, a sealing ring #1, a sealing ring #2, a valve core, a spring seat, an outer reset spring, an inner reset spring, a spring positioning ring, an adjusting bolt and a pin, wherein the connector is in threaded connection with the right end of the valve body, one end of the connector is provided with an opening A, the right end of the valve body is uniformly provided with two groups of liquid guide holes B, the opening A and the opening B are communicated through the liquid guide holes in the inner cavity of the valve body, the adjusting bolt is in threaded connection with the inner cavity on the left side of the valve body, when the adjusting bolt is screwed to a proper position, the adjusting bolt and the valve body are provided with a through hole and fixed by a pin, the spring positioning ring is arranged on the right side of the adjusting bolt, the inner reset spring and the outer reset spring are respectively arranged on the right side of the spring positioning ring, the right ends of the two groups of reset springs are both contacted with the spring seat, and the right side of the boss of the inner cavity of the valve body is jointed with the boss of the valve body, the joint is in threaded connection with an inner cavity on the right side of the valve body, liquid guide holes are uniformly formed in the left end of the joint, an inner cavity is formed in the left side of the joint and is connected with the port A, the sealing ring #1 and the sealing ring #2 are sequentially placed in the inner cavity from right to left, the valve core is placed between the sealing ring #1 and the sealing ring #2, a boss is arranged at the left end of the valve core, the maximum displacement distance of the valve core is limited, two groups of uniformly distributed liquid guide holes are formed in the valve core, and the inner cavity is formed in the middle of the valve core.
2. The thrust/balance safety valve of claim 1 wherein two sets of evenly spaced fluid conducting holes are provided on the right side of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221093551.3U CN217355710U (en) | 2022-05-09 | 2022-05-09 | Push/balance safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221093551.3U CN217355710U (en) | 2022-05-09 | 2022-05-09 | Push/balance safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217355710U true CN217355710U (en) | 2022-09-02 |
Family
ID=83010256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221093551.3U Active CN217355710U (en) | 2022-05-09 | 2022-05-09 | Push/balance safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217355710U (en) |
-
2022
- 2022-05-09 CN CN202221093551.3U patent/CN217355710U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |