CN114294449A - Internal pressure relief type one-way valve - Google Patents
Internal pressure relief type one-way valve Download PDFInfo
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- CN114294449A CN114294449A CN202111423097.3A CN202111423097A CN114294449A CN 114294449 A CN114294449 A CN 114294449A CN 202111423097 A CN202111423097 A CN 202111423097A CN 114294449 A CN114294449 A CN 114294449A
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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 joint, 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 joint is arranged in the inlet, the outer valve core is arranged in a valve core hole of the valve body, the outer valve core and the inlet joint are sealed mutually, the outer valve core and the valve body are sealed mutually, 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 blocks 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 outer valve core, the pressure borne by the inner valve core is adjustable, and the inner valve core and the outer valve core are sealed mutually. The opening pressure of the outer valve core of the internal pressure relief type one-way valve is controllable, and 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 one-way valve is mainly applied to the field of hydraulic transmission and control, and specifically applied to the internal pressure relief protection of the one-way valve and the pressure regulation of an outlet through the one-way valve; the traditional one-way valve basically only has a one-way conduction function due to the limited structure, the internal pressure of the valve core is uncontrollable, and when the internal pressure of the valve core is overlarge, an actuating part is easily damaged.
Disclosure of Invention
The invention aims to provide an internal pressure relief type one-way valve with controllable opening pressure.
In order to solve the above problems, the present invention provides an internal pressure relief type check valve, which comprises a valve body, an inlet joint, an outer valve core, and an inner valve core, the valve body is provided with an inlet, an outlet and a leakage port, the inlet joint is arranged in the inlet, the inlet joint and the inlet are sealed mutually, the outer valve core is arranged in the valve core hole of the valve body, the outer valve core and the inlet joint are sealed mutually, the outer valve core and the valve body are sealed mutually, 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 blocks the outlet or the leakage port, the outer valve core is a hollow body, the inner valve core is arranged in the hollow cavity of the outer valve core, the inner valve core is abutted against the inner wall of the outer valve core, the pressure applied on the inner valve core is adjustable, and the inner valve core and the outer valve core are sealed mutually.
Further, still include pressure regulating element, compression spring and end cap, still be provided with the pressure regulation mouth on the valve body, the pressure regulating element connect in the pressure regulation mouth, the pressure regulating element is suitable for relatively the valve body is followed the axis direction of valve body is to being close to the direction of inner valve core or keeping away from the direction of inner valve core removes, compression spring one end connect in on the inner valve core, the compression spring other end connect in on the pressure regulating element, the end cap connect in pressure regulation mouth tip, the end cap with mutual sealing between the pressure regulation mouth.
Further, the pressure regulating element is a pressure regulating screw, and the pressure regulating screw is in threaded connection with the inside of 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 abuts against the inner valve core head.
Furthermore, 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 combination gasket.
Further, the outer valve core and the valve body are sealed with each other through an O-shaped ring.
Furthermore, one end part 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 applied 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 in the pressure adjusting port through threads.
Because the inner valve core is arranged in the hollow cavity of the outer valve core of the internal pressure relief type one-way valve, the inner valve core is abutted against the outer valve core, the pressure applied to the inner valve core is adjustable, and the pressure applied to the inner valve core is transmitted to the outer valve core by the inner 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 of 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 of 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 core of an internal pressure relief check valve according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of an inner valve element of an internal 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 type check valve according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The terms "upper", "lower", "front", "rear", "left" and "right" and the like appearing in the embodiments of the present invention indicate directions or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled 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 relative importance or implicitly indicating the number of technical features indicated.
An internal pressure relief type one-way valve according to an embodiment of the present invention is shown in fig. 1, fig. 2, and fig. 3, and includes a valve body 1, an inlet joint 3, an outer valve core 4, and an inner valve core 5, wherein the valve body 1 is provided with an inlet 11, an outlet 12, and a leakage port 13, a valve core hole 15 is provided in the center of the valve body 1, the inlet joint 3 is disposed in the inlet 11, the inlet joint 3 and the inlet 11 are sealed with each other, the outer valve core 4 is disposed in the valve core hole 15 of the valve body 1, when a hydraulic pressure in the inlet joint 3 is smaller than a pressure applied to the outer valve core 4, an end of the outer valve core 4, the inlet joint 3, and an inner wall of the valve body 1 are sealed with each other, an outer wall of the outer valve core 4 and the valve body 1 are sealed with each other, the outer valve core 4 is adapted to move along an axial direction of the valve body 1 relative to the valve body 1, the outer valve core 4 is used for plugging the outlet 12 or the leakage port 13, the outer valve core 4 is a hollow body, the inner valve core 5 is disposed 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 borne by the inner valve core 5 is adjustable, and the inner valve core 5 and the outer valve core 4 are sealed mutually. When the hydraulic pressure in the inlet joint 3 is smaller than the acting force transmitted to the outer valve core 4 by the inner valve core 5, 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 along with the rise of the hydraulic pressure, when the hydraulic pressure in the inlet joint 3 is larger than the acting force transmitted to the outer valve core 4 by the inner valve core 5, the outer valve core 4 moves, and the inlet 11 is communicated with the outlet 12. According to the internal pressure relief type one-way valve, the inner valve core 5 is arranged in the hollow cavity of the outer valve core 4, the inner valve core 5 is abutted against the outer valve core 4, the pressure borne by the inner valve core 5 is adjustable, and the inner valve core 4 is suitable for transmitting the pressure borne 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 part caused by overlarge pressure is avoided.
Optionally, the internal pressure relief type check valve according to the embodiment of the present 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, an axis of the pressure regulating port 14 is collinear with an axis of the inlet 11, the pressure regulating element 8 is connected in the pressure regulating port 14, the pressure regulating element 8 is adapted to move towards a 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 an end of the pressure regulating port 14, the plug 6 and an 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, a pressure applied to the inner valve core 5 by the compression spring 10 increases, an outlet pressure of the internal pressure relief type check valve increases, when the pressure regulating element 8 moves towards the direction far away from the inner valve core 5 relative to the valve body 1, the pressure of the compression spring 10 acting on the inner valve core 5 is reduced, and the outlet pressure of the internal pressure relief type one-way valve is reduced. The control of the pressure of the outlet of the internal pressure relief type one-way valve is realized through the pressure regulating element 8 and the compression spring 10, 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 extending amount of the pressure adjusting screw is adjusted to control the pressure value of the compression spring 10. Specifically, the end of the pressure regulating screw is provided with a cross-shaped groove. The pressure regulating screw is used as a pressure regulating element, so that the pressure regulating screw is simple in structure, easy to obtain elements, and convenient for pressure regulating operation, maintenance and replacement.
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 one 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 can better act on the inner valve core 5, and the inner valve core rod 51 plays a guiding role on the compression spring 10, and ensures that the compression spring 10 transmits pressure along the axial direction of the inner valve core 5.
Optionally, the inner valve core head 52 is a cone, a circular hole 43 is formed in an end surface of the outer valve core 4 close to the inlet, and an outer conical surface of the cone is disposed in the circular hole 43. The outer circular conical surface of the cone of the inner valve core head 52 is arranged in the circular hole, and under the action of the compression spring 10, 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, so that reliable sealing between the inner valve core 5 and the outer valve core 4 is ensured.
Optionally, as shown in fig. 1 and fig. 3, a connector pipe connecting thread 31 and a valve body connecting thread 32 are provided on the inlet connector 3, and the inlet connector 3 and the valve body 1 are connected to each other through the valve body connecting thread 32, and the threaded connection facilitates disassembly 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 sealed with each other through an inlet combination gasket 2, and the inlet combination 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 an outer wall of the outer valve element 4, the outer valve element 4 and the valve body 1 are sealed with each other by an O-ring 9, and the O-ring 9 is disposed in the annular sealing groove 42 to prevent leakage between the outlet 12 and the leakage port 13.
Optionally, one end of the outer 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 applied to the outer valve core 4, the conical surface 41, the inner wall of the inlet joint 3 and the inner wall of the valve body 1 are attached to each other for sealing, so that the inlet 11 and the outlet 12 are sealed in a closed manner.
Optionally, as shown in fig. 1, the plug 6 is screwed into the pressure regulating port 14, so as to facilitate disassembly and maintenance.
Optionally, the plug 6 and the pressure regulating port 14 are sealed with each other by a plug-combined gasket.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. The internal pressure relief type one-way valve is characterized by comprising a valve body (1), an inlet connector (3), an outer valve core (4) and an inner valve core (5), wherein the valve body (1) is provided with an inlet (11), an outlet (12) and a leakage port (13), the inlet connector (3) is arranged in the inlet (11), the inlet connector (3) and the inlet (11) are sealed mutually, the outer valve core (4) is arranged in a valve core hole (15) of the valve body (1), the outer valve core (4) and the inlet connector (3) are sealed mutually, the outer valve core (4) and the valve body (1) are sealed mutually, the outer valve core (4) is suitable for moving along the axis direction of the valve body (1) relative to the valve body (1), and the outer valve core (4) blocks 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 inner wall of the outer valve core (4), the pressure applied to the inner valve core (5) is adjustable, and the inner valve core (5) and the outer valve core (4) are sealed with each other.
2. The internal pressure relief type check valve according to claim 1, further comprising a pressure regulating element (8), a compression spring (10) and a plug (6), the valve body (1) is also provided with a pressure regulating port (14), the pressure regulating element (8) is connected in the pressure regulating port (14), the pressure regulating element (8) is suitable for moving relative to the valve body (1) along the axial direction of the valve body (1) towards the direction close to the inner valve core (5) or away from the inner valve core (5), 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 adjusting opening (14), and the plug (6) and the pressure adjusting opening (14) are sealed mutually.
3. The internal pressure relief check valve of claim 2 wherein the pressure regulating element (8) is a pressure regulating screw that is threaded into the pressure regulating port (14).
4. The internal pressure relief type check valve according to claim 3, wherein the inner valve core (5) comprises an inner valve core rod (51) and an inner valve core head (52), the inner valve core rod (51) is connected with the inner valve core head (52), the spring (10) is sleeved on the inner valve core rod (51), and one end of the spring (10) connected with the inner valve core (5) abuts against the inner valve core head (52).
5. The internal pressure relief type check valve according to claim 4, wherein the internal valve core head (52) is a cone, a circular hole (43) is formed in one end of the external valve core (4) close to the inlet (11), and an external conical surface of the cone of the internal valve core head (52) is placed in the circular hole (43).
6. The internal pressure relief check valve of claim 5 wherein the inlet fitting (3) and the valve body (1) are threadably interconnected.
7. The internal pressure relief check valve of claim 6 wherein the inlet fitting (3) and the valve body (1) are sealed to each other by an inlet combination gasket (2).
8. The internal pressure relief check valve of claim 7 wherein the outer spool (4) and the valve body (1) are sealed to each other by an O-ring (9).
9. The internal pressure relief type check valve according to claim 8, wherein one end of the outer 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 applied to the outer valve core (4), the conical surface (41) is attached to the inner wall of the inlet joint (3) and the inner wall of the valve body (1).
10. The internal relief check valve of claim 9, wherein the plug (6) is threadably connected within the pressure regulation port (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111423097.3A CN114294449A (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 CN114294449A (en) | 2021-11-26 | 2021-11-26 | Internal pressure relief type one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114294449A true CN114294449A (en) | 2022-04-08 |
Family
ID=80965340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111423097.3A Pending CN114294449A (en) | 2021-11-26 | 2021-11-26 | Internal pressure relief type one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114294449A (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 |
-
2021
- 2021-11-26 CN CN202111423097.3A patent/CN114294449A/en active Pending
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 |
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