CN114294449B - Internal pressure relief type one-way valve - Google Patents
Internal pressure relief type one-way valve Download PDFInfo
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- CN114294449B CN114294449B CN202111423097.3A CN202111423097A CN114294449B CN 114294449 B CN114294449 B CN 114294449B CN 202111423097 A CN202111423097 A CN 202111423097A CN 114294449 B CN114294449 B CN 114294449B
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- 230000001105 regulatory effect Effects 0.000 claims description 44
- 230000006835 compression Effects 0.000 claims description 20
- 238000007906 compression Methods 0.000 claims description 20
- 230000008676 import Effects 0.000 claims 7
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The invention provides an internal pressure relief type one-way valve, which relates to the technical field of hydraulic transmission and control and comprises a valve body, an inlet connector, an external valve core and an internal valve core, wherein an inlet, an outlet and a leakage port are arranged on the valve body, the inlet connector is arranged in the inlet, the external valve core is arranged in a valve core hole of the valve body, the external valve core and the inlet connector are mutually sealed, the external valve core and the valve body are mutually sealed, the external valve core is suitable for moving along the axial direction of the valve body relative to the valve body, the external valve core is a hollow body, the internal valve core is arranged in a hollow cavity of the external valve core, the internal valve core is propped against the external valve core, the pressure born by the internal valve core is adjustable, and the internal valve core and the external valve core are mutually sealed. The opening pressure of the valve core outside the internal pressure relief type one-way valve is controllable, so that the damage to an actuating part caused by overlarge pressure is avoided.
Description
Technical Field
The invention relates to the technical field of hydraulic transmission and control, in particular to an internal pressure relief type one-way valve.
Background
The check valve is mainly applied to the field of hydraulic transmission and control, and is particularly applied to pressure relief protection in the check valve and pressure regulation of an outlet through the check valve; the traditional one-way valve basically has a one-way conduction function due to the limitation of the structure, the internal pressure of the valve core is uncontrollable, and when the internal pressure of the valve core is overlarge, the actuating part is easy to damage.
Disclosure of Invention
The invention solves the problem of providing an internal pressure relief type one-way valve with controllable opening pressure.
In order to solve the problems, the invention provides an internal pressure relief type one-way valve, which comprises a valve body, an inlet connector, an outer valve core and an inner valve core, wherein the valve body is provided with an inlet, an outlet and a leakage port, the inlet connector is arranged in the inlet, the inlet connector and the inlet are mutually sealed, the outer valve core is arranged in a valve core hole of the valve body, the outer valve core and the inlet connector are mutually sealed, the outer valve core and the valve body are mutually sealed, the outer valve core is suitable for moving along the axial direction of the valve body relative to the valve body, the outer valve core seals the outlet or the leakage port, the outer valve core is a hollow body, the inner valve core is arranged in a hollow cavity of the outer valve core, the inner valve core is abutted against the inner wall of the outer valve core, the pressure born by the inner valve core is adjustable, and the inner valve core and the outer valve core are mutually sealed.
Further, the valve body is further provided with a pressure regulating port, the pressure regulating element is connected to the pressure regulating port, the pressure regulating element is suitable for moving relative to the valve body along the axial direction of the valve body towards the direction close to the inner valve core or away from the inner valve core, one end of the compression spring is connected to the inner valve core, the other end of the compression spring is connected to the pressure regulating element, the plug is connected to the end part of the pressure regulating port, and the plug and the pressure regulating port are mutually sealed.
Further, the pressure regulating element is a pressure regulating screw, and the pressure regulating screw is in threaded connection with the pressure regulating port.
Further, the inner valve core comprises an inner valve core rod and an inner valve core head, the inner valve core rod is connected with the inner valve core head, the spring is sleeved on the inner valve core rod, and one end, connected with the inner valve core, of the spring is abutted against the inner valve core head.
Further, the inner valve core head is a cone, a circular hole is formed in one end, close to the inlet, of the outer valve core, and the outer conical surface of the cone of the inner valve core head is arranged in the circular hole.
Further, the inlet joint and the valve body are connected with each other through threads.
Further, the inlet joint and the valve body are mutually sealed through an inlet combined gasket.
Further, the outer valve core and the valve body are mutually sealed through an O-shaped ring.
Further, one end of the outer valve core, which is close to the inlet joint, is a conical surface, and when the hydraulic pressure in the inlet joint is smaller than the pressure born by the outer valve core, the conical surface is mutually attached to the inner wall of the inlet joint and the inner wall of the valve body.
Further, the plug is connected into the pressure regulating port through threads.
Because the inner valve core is arranged in the hollow cavity of the outer valve core of the inner pressure relief type one-way valve, the inner valve core is propped against the outer valve core, the pressure born by the inner valve core is adjustable, and the inner valve core transmits the pressure born by the inner valve core to the outer valve core, so that the opening pressure of the outer valve core is controllable, and the damage to an actuating part caused by overlarge pressure is avoided.
Drawings
FIG. 1 is a cross-sectional view of an internal pressure relief check valve according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a valve body in an internal pressure relief check valve according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an inlet fitting in an internal pressure relief check valve according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of an outer valve element in an inner pressure relief check valve according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of an inner valve element in an inner pressure relief check valve according to an embodiment of the present invention;
Fig. 6 is a cross-sectional view of a pressure regulating screw in an internal pressure relief check valve according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
The directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left" and "right", etc., appearing in the embodiments of the present invention are based on the orientation or positional relationships shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and are not indicative or implying that the apparatus referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium; the specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
If there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
The embodiment of the invention discloses an internal pressure relief type one-way valve, as shown in fig. 1,2 and 3, which comprises a valve body 1, an inlet connector 3, an outer valve core 4 and an inner valve core 5, wherein an inlet 11, an outlet 12 and a leakage port 13 are arranged on the valve body 1, a valve core hole 15 is arranged in the center of the valve body 1, the inlet connector 3 is arranged in the inlet 11, the inlet connector 3 and the inlet 11 are mutually sealed, the outer valve core 4 is arranged in the valve core hole 15 of the valve body 1, when the hydraulic pressure in the inlet connector 3 is smaller than the pressure exerted by the outer valve core 4, the end part of the outer valve core 4 is mutually attached and sealed with the inner wall of the valve body 1, the outer wall of the outer valve core 4 is mutually sealed with the valve body 1, the outer valve core 4 is suitable for moving along the axial direction of the valve body 1 relative to the valve body 1, the outer valve core 4 is used for sealing the outlet 12 or the leakage port 13, the outer valve core 4 is a hollow body, the inner valve core 5 is arranged in a hollow cavity of the outer valve core 4, the inner valve core 5 is abutted against the outer valve core 4, the pressure exerted by the inner valve core 5 is adjustable. When the hydraulic pressure in the inlet joint 3 is smaller than the acting force transmitted by the inner valve core 5 to the outer valve core 4, the end part of the outer valve core 4 is kept in contact with the inlet joint 3, the inlet 11 and the outlet 12 are closed, and when the hydraulic pressure in the inlet joint 3 is larger than the acting force transmitted by the inner valve core 5 to the outer valve core 4 along with the rising of the hydraulic pressure, the outer valve core 4 moves, and the inlet 11 and the outlet 12 are communicated. According to the internal pressure relief type one-way valve, as the inner valve core 5 is arranged in the hollow cavity of the outer valve core 4, the inner valve core 5 is propped against the outer valve core 4, the pressure born by the inner valve core 5 is adjustable, and the inner valve core 4 is suitable for transmitting the pressure born by the inner valve core 4 to the outer valve core 4, so that the opening pressure of the outer valve core 4 is controllable, and the damage to an actuating component caused by overlarge pressure is avoided.
Optionally, the embodiment of the invention further includes a pressure regulating element 8, a compression spring 10 and a plug 6, the valve body 1 is further provided with a pressure regulating port 14, the axis of the pressure regulating port 14 is on the same straight line with the axis of the inlet 11, the pressure regulating element 8 is connected in the pressure regulating port 14, the pressure regulating element 8 is suitable for moving towards the direction close to the inner valve core 5 or away from the inner valve core 5 along the axis direction of the valve body 1 relative to the valve body 1, one end of the compression spring 10 is connected to the inner valve core 5, the other end of the compression spring 10 is connected to the pressure regulating element 8, the plug 6 is connected to the end of the pressure regulating port 14, the plug 6 and the end of the pressure regulating port 14 are sealed with each other, when the pressure regulating element 8 moves towards the direction close to the inner valve core 5 relative to the valve body 1, the pressure acting on the inner valve core 5 by the compression spring 10 increases, and when the pressure regulating element 8 moves towards the direction away from the inner valve core 5 relative to the valve body 1, the pressure acting on the inner valve core 5 by the compression spring 10 decreases, and the outlet pressure of the inner pressure regulating element is reduced. The pressure regulating element 8 and the compression spring 10 are used for controlling the outlet pressure of the internal pressure relief type one-way valve, and the internal pressure relief type one-way valve is simple in structure, convenient to assemble, disassemble and maintain and high in reliability.
Optionally, the inner wall of the pressure adjusting port 14 is provided with threads, the pressure adjusting element 8 is a pressure adjusting screw, the pressure adjusting screw is in threaded connection with the pressure adjusting port 14, and the pressure value of the compression spring 10 is controlled by adjusting the extension amount of the pressure adjusting screw. Specifically, the end part of the pressure regulating screw is provided with a cross groove. The pressure regulating screw is adopted as the pressure regulating element, the structure is simple, the element is easy to obtain, and the pressure regulating operation, maintenance and replacement are convenient.
Alternatively, as shown in fig. 1 and 5, the inner valve core 5 includes an inner valve core rod 51 and an inner valve core head 52, the inner valve core rod 51 is connected to the inner valve core head 52, the compression spring 10 is sleeved on the inner valve core rod 51, and an end of the compression spring 10 connected to the inner valve core 5 is connected to the inner valve core head 52. The compression spring 10 is sleeved on the valve core rod 51, so that the acting force of the compression spring 10 acts on the inner valve core 5 better, the inner valve core rod 51 plays a guiding role on the compression spring 10, and the compression spring 10 is ensured to transmit pressure along the axial direction of the inner valve core 5.
Optionally, the inner valve core head 52 is a cone, the end face of the outer valve core 4 near the inlet is provided with a circular hole 43, and the outer cone surface of the cone is arranged in the circular hole 43. The outer conical surface of the cone of the inner valve core head 52 is arranged in the circular hole, and the sealing surface 53 of the inner valve core 5 is in good contact with the sealing line 44 of the outer valve core 4 under the action of the compression spring 10, so that the sealing reliability between the inner valve core 5 and the outer valve core 4 is ensured.
Optionally, as shown in fig. 1 and 3, the inlet joint 3 is provided with a joint pipe connecting thread 31 and a valve body connecting thread 32, the inlet joint 3 and the valve body 1 are connected with each other through the valve body connecting thread 32, and the threaded connection is convenient for disassembly, assembly and maintenance.
Optionally, the end of the inlet 11 of the valve body 1 is provided with a sealing groove 17, the sealing groove 17 is arranged at the periphery of the inlet 11, the inlet joint 3 and the valve body 1 are mutually sealed through the inlet combined gasket 2, and the inlet combined gasket 2 is arranged in the sealing groove 17.
Optionally, as shown in fig. 1 and 4, an annular sealing groove 42 is formed in the outer wall of the outer valve core 4, the outer valve core 4 and the valve body 1 are sealed with each other through an O-ring 9, and the O-ring 9 is arranged in the annular sealing groove 42 to avoid leakage between the outlet 12 and the leakage port 13.
Optionally, an end portion of the outer valve core 4, which is close to the inlet joint 3, is a conical surface 41, and when the hydraulic pressure in the inlet joint 3 is smaller than the pressure borne by the outer valve core 4, the conical surface 41 is mutually attached to and sealed with the inner wall of the inlet joint 3 and the inner wall of the valve body 1, so that the closed seal between the inlet 11 and the outlet 12 is realized.
Alternatively, as shown in fig. 1, the plug 6 is screwed into the pressure adjusting port 14, so as to facilitate disassembly and maintenance.
Optionally, the plug 6 and the pressure adjusting port 14 are sealed with each other by a plug combined gasket.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.
Claims (7)
1. The utility model provides an interior pressure release formula check valve, its characterized in that includes valve body (1), import joint (3), outer case (4), interior valve core (5), be provided with import (11), export (12), leakage port (13) on valve body (1), import joint (3) set up in import (11), import joint (3) with seal each other between import (11), outer case (4) set up in case hole (15) of valve body (1), outer case (4) with seal each other between import joint (3), outer case (4) with seal each other between valve body (1), outer case (4) are suitable for relative valve body (1) are followed the axis direction of valve body (1) removes, outer case (4) shutoff export (12) or leakage port (13), outer case (4) are the cavity, interior valve core (5) set up in the cavity of outer case (4), outer case (5) are sealed each other between valve core (5) and valve core (5), pressure adjusting element (8) are still pressed in outer case (4) the valve core (5) is held down in the pressure adjusting element (5) between each other, valve core (5) and valve core (5) are sealed each other, the pressure adjusting element (5) is sealed each other, and the valve core (5, the pressure adjusting element is sealed inside the valve core (5) Compression spring (10) and end cap (6), still be provided with pressure regulating mouth (14) on valve body (1), pressure regulating component (8) connect in pressure regulating mouth (14), pressure regulating component (8) are suitable for relative valve body (1) are followed the axis direction of valve body (1) is to being close to direction or the keeping away from of interior valve core (5) removal, compression spring (10) one end connect in interior valve core (5), compression spring (10) other end connect in pressure regulating component (8) are last, end cap (6) connect in pressure regulating mouth (14) tip, end cap (6) with pressure regulating mouth (14) are sealed each other, interior valve core (5) are including interior valve core (51), interior valve core (52), interior valve core (51) with interior valve core (52) are connected, compression spring (10) cover in interior valve core (51) are in interior valve core (5) are closed, one end cone (52) are held in the pressure regulating component (8) are held in the pressure regulating component (4) in the mouth, the one end of cone (52) is held in the pressure regulating mouth (4), the conical outer surface of the inner valve core head (52) is arranged in the circular hole (43).
2. The internal pressure relief one-way valve according to claim 1, characterized in that the pressure regulating element (8) is a pressure regulating screw which is screwed into the pressure regulating port (14).
3. An internal pressure relief one-way valve according to claim 2, characterized in that the inlet fitting (3) and the valve body (1) are interconnected by means of a screw thread.
4. An internal pressure relief one-way valve according to claim 3, characterized in that the inlet fitting (3) and the valve body (1) are sealed to each other by an inlet combination gasket (2).
5. The internal pressure relief check valve according to claim 4, characterized in that the outer valve core (4) and the valve body (1) are sealed to each other by means of an O-ring (9).
6. The internal pressure relief type one-way valve according to claim 5, wherein an end portion of the external valve core (4) close to the inlet joint (3) is a conical surface (41), and when the hydraulic pressure in the inlet joint (3) is smaller than the pressure born by the external valve core (4), the conical surface (41) is mutually attached to the inner wall of the inlet joint (3) and the inner wall of the valve body (1).
7. The internal pressure relief check valve according to claim 6, wherein said plug (6) is threadably connected within said pressure regulating port (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111423097.3A CN114294449B (en) | 2021-11-26 | 2021-11-26 | Internal pressure relief type one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111423097.3A CN114294449B (en) | 2021-11-26 | 2021-11-26 | Internal pressure relief type one-way valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114294449A CN114294449A (en) | 2022-04-08 |
| CN114294449B true CN114294449B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111423097.3A Active CN114294449B (en) | 2021-11-26 | 2021-11-26 | Internal pressure relief type one-way valve |
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| Country | Link |
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| CN (1) | CN114294449B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2295086Y (en) * | 1997-02-04 | 1998-10-21 | 梅金月 | Single-way pressure control valve |
| DE102006004204B3 (en) * | 2006-01-27 | 2007-09-06 | Denk Engineering Gmbh | Valve with two or more outlets has an axial construction with a single control seal |
| CN202360829U (en) * | 2011-12-14 | 2012-08-01 | 天津海纳九洲掘进机制造有限公司 | Novel one-way overflow valve |
| CN204153248U (en) * | 2014-10-17 | 2015-02-11 | 莱芜钢铁集团电子有限公司 | A kind of overflow modulating valve |
| CN204403479U (en) * | 2014-12-26 | 2015-06-17 | 朱裕生 | A kind of Decompression valves |
| CN206159579U (en) * | 2016-10-28 | 2017-05-10 | 南京六合煤矿机械有限责任公司 | Pilot -operated type relief valve |
| CN209671699U (en) * | 2019-03-15 | 2019-11-22 | 新乡市豫能防爆科技有限公司 | Pressure limiting check-valves |
| CN110541954A (en) * | 2019-10-08 | 2019-12-06 | 永一阀门集团有限公司 | Thread type safety valve |
| CN112032377A (en) * | 2020-08-21 | 2020-12-04 | 浙江大学 | Quick-response pilot operated safety valve and system overpressure quick protection method |
| CN214036998U (en) * | 2020-11-25 | 2021-08-24 | 广州市立得精密机械有限公司 | Straight-through check valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10767776B2 (en) * | 2017-10-09 | 2020-09-08 | Cyrus Shank Corporation | Pressure relief valve with stop |
-
2021
- 2021-11-26 CN CN202111423097.3A patent/CN114294449B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2295086Y (en) * | 1997-02-04 | 1998-10-21 | 梅金月 | Single-way pressure control valve |
| DE102006004204B3 (en) * | 2006-01-27 | 2007-09-06 | Denk Engineering Gmbh | Valve with two or more outlets has an axial construction with a single control seal |
| CN202360829U (en) * | 2011-12-14 | 2012-08-01 | 天津海纳九洲掘进机制造有限公司 | Novel one-way overflow valve |
| CN204153248U (en) * | 2014-10-17 | 2015-02-11 | 莱芜钢铁集团电子有限公司 | A kind of overflow modulating valve |
| CN204403479U (en) * | 2014-12-26 | 2015-06-17 | 朱裕生 | A kind of Decompression valves |
| CN206159579U (en) * | 2016-10-28 | 2017-05-10 | 南京六合煤矿机械有限责任公司 | Pilot -operated type relief valve |
| CN209671699U (en) * | 2019-03-15 | 2019-11-22 | 新乡市豫能防爆科技有限公司 | Pressure limiting check-valves |
| CN110541954A (en) * | 2019-10-08 | 2019-12-06 | 永一阀门集团有限公司 | Thread type safety valve |
| CN112032377A (en) * | 2020-08-21 | 2020-12-04 | 浙江大学 | Quick-response pilot operated safety valve and system overpressure quick protection method |
| CN214036998U (en) * | 2020-11-25 | 2021-08-24 | 广州市立得精密机械有限公司 | Straight-through check valve |
Non-Patent Citations (1)
| Title |
|---|
| 挖掘机几种主要液压元件常见故障及处理方法;刘凤喜;;科技资讯;20100623(第18期);第110页 * |
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| CN114294449A (en) | 2022-04-08 |
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