CN108662208B - Hydraulic control valve with symmetrical structure - Google Patents
Hydraulic control valve with symmetrical structure Download PDFInfo
- Publication number
- CN108662208B CN108662208B CN201810542406.0A CN201810542406A CN108662208B CN 108662208 B CN108662208 B CN 108662208B CN 201810542406 A CN201810542406 A CN 201810542406A CN 108662208 B CN108662208 B CN 108662208B
- Authority
- CN
- China
- Prior art keywords
- piston
- spring
- chamber
- cavity
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K39/00—Devices for relieving the pressure on the sealing faces
- F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
- F16K39/024—Devices for relieving the pressure on the sealing faces for lift valves using an auxiliary valve on the main valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The present disclosure relates to a hydraulic control valve of a symmetrical structure, comprising: the valve body is internally provided with a first cavity, a second cavity and a third cavity, and the valve body is provided with a liquid inlet, a liquid outlet and a pressure relief opening which are respectively communicated with the first cavity, the second cavity and the third cavity. Among the technical scheme that this disclosure provided, through output and the pressure release of input hydraulic control valve, it is more succinct for the solenoid valve, be difficult to break down, and simple structure, low cost.
Description
Technical Field
The disclosure relates to the technical field of valves, in particular to a hydraulic control valve with a symmetrical structure.
Background
The valve is a directional control tool in which fluid can only flow in along the inlet, but not back from the outlet. The method is applied to the occasions where the fluid is not allowed to flow reversely. Pilot operated valves are valves that switch the direction of fluid flow by means of pilot fluid pressure. Compared with an electromagnetic valve, a mechanical valve is a traditional valve, is low in cost and wide in application range, but is gradually replaced due to poor working flexibility.
Disclosure of Invention
Based on the technical problem that the background art exists, this disclosure provides a hydraulic control valve of symmetrical structure.
The utility model provides a hydraulic control valve of symmetrical structure, include: the valve body is internally provided with a first cavity, a second cavity and a third cavity, and the valve body is provided with a liquid inlet, a liquid outlet and a pressure relief opening which are respectively communicated with the first cavity, the second cavity and the third cavity;
the first chamber is communicated with the second chamber through a first through hole, and the first chamber is communicated with the third chamber through a second through hole; a first spring and a first piston are arranged in the second chamber; one end of the first spring is fixedly arranged on the valve body, and the other end of the first spring is connected with the first piston; one end of the first piston, which is far away from the first spring, is inserted into the first through hole; a second spring and a second piston are arranged in the third cavity; one end of the second spring is fixedly arranged on the valve body, and the other end of the second spring is connected with the second piston; one end of the second piston, which is far away from the second spring, is inserted into the second through hole;
in a natural state, the first through hole and the second through hole are respectively blocked by the first piston and the second piston; in a working state, along with the input of liquid into the first chamber, when the pressure in the first chamber reaches a first threshold value, the first spring contracts, the first through hole is opened, when the pressure in the first chamber reaches a second threshold value, the second spring contracts, the second through hole is opened, and the second threshold value is larger than the first threshold value.
Preferably, the first piston and the second piston are of a conical or convex platform configuration.
Preferably, the first piston and the second piston are of symmetrical construction.
Preferably, a first guide rod is arranged in the second chamber, the first guide rod is arranged on the valve body in parallel with the moving track of the first piston, one end of the first guide rod is inserted into the first piston and is in sliding connection with the first piston, and the first spring is sleeved on the first guide rod.
Preferably, a second guide rod is arranged in the third chamber, the second guide rod is parallel to the moving track of the second piston and is installed on the valve body, one end of the second guide rod is inserted into the second piston and is in sliding connection with the second piston, and the second spring is sleeved on the second guide rod.
Preferably, the first piston and the second piston are both coated with sealing gaskets.
According to the hydraulic control valve with the symmetrical structure, when the hydraulic control valve works normally, normal control on a liquid flow channel can be guaranteed through the liquid inlet, the first cavity, the second cavity and the liquid outlet; when the input runner connected with the liquid inlet is abnormally gushed or the output runner connected with the liquid outlet is blocked, the second piston is moved by compressing the second spring, so that the pressure is released through the pressure release port, the safety of the runner where the whole hydraulic valve is located is ensured, and the abnormal timely discovery and investigation are facilitated.
Among the technical scheme that this disclosure provided, through output and the pressure release of input hydraulic control valve, it is more succinct for the solenoid valve, be difficult to break down, and simple structure, low cost.
Drawings
Fig. 1 is a structural view of a symmetrical hydraulic control valve according to the present disclosure.
Detailed Description
Referring to fig. 1, the present disclosure provides a symmetrical structure pilot operated valve, including: the valve comprises a valve body 1, wherein a first cavity 1-1, a second cavity 1-2 and a third cavity 1-3 are arranged in the valve body 1, and a liquid inlet 1A, a liquid outlet 1B and a pressure relief opening 1C which are respectively communicated with the first cavity 1-1, the second cavity 1-2 and the third cavity 1-3 are arranged on the valve body 1.
The first chamber 1-1 and the second chamber 1-2 are communicated through a first through hole, and the first chamber 1-1 and the third chamber 1-3 are communicated through a second through hole. Therefore, under the condition that the first through hole is unblocked, the liquid input from the liquid inlet 1A passes through the first cavity 1-1, the first through hole and the second cavity 1-2 and then is output from the liquid outlet 1B; under the condition that the second through hole is unblocked, the liquid input from the liquid inlet 1A can also be discharged from the pressure relief port 1C after passing through the first chamber 1-1, the second through hole and the third chamber 1-3.
A first spring 2 and a first piston 3 are mounted in the second chamber 1-2. One end of the first spring 2 is fixedly arranged on the valve body 1, and the other end of the first spring is connected with the first piston 3. One end of the first piston 3, which is far away from the first spring 2, is inserted into the first through hole. Thus, the first piston 3 moves along with the extension and contraction of the first spring 2, and in a natural state, the first piston 3 is inserted into the first through hole and blocks the first through hole to isolate the first chamber 1-1 from the second chamber 1-2; when the first spring 2 is compressed, the first piston 3 is pulled to open the first through hole, thereby communicating the first chamber 1-1 and the second chamber 1-2. In this embodiment, the outer periphery of the first piston 3 is wrapped with a sealing gasket to ensure the sealing property of the first through hole blocked by the first piston 3.
A second spring 4 and a second piston 5 are mounted in the third chamber 1-3. One end of the second spring 4 is fixedly arranged on the valve body 1, and the other end of the second spring is connected with the second piston 5. The end of the second piston 5 remote from the second spring 4 is inserted into the second through hole. The second piston 5 moves along with the extension and contraction of the second spring 4, and in a natural state, the second piston 5 is inserted into the second through hole and blocks the second through hole to isolate the first chamber 1-1 from the third chamber 1-3; when the second spring 4 contracts, it pulls the second piston 5 to open the second through hole, so that the third chamber 1-3 communicates with the first chamber 1-1. In this embodiment, the outer periphery of the second piston 5 is wrapped with a sealing gasket to ensure the sealing property of the second through hole when the second piston 5 blocks the second through hole.
In the present embodiment, the first piston 3 and the second piston 5 have a tapered-table structure or a convex-table structure. Specifically, a first guide rod and a second guide rod are respectively arranged in the second chamber 1-2 and the third chamber 1-3. The first guide rod is arranged on the valve body 1 in parallel with the moving track of the first piston 3, one end of the first guide rod is inserted into the first piston 3 and is in sliding connection with the first piston 3, and the first spring 2 is sleeved on the first guide rod. So, the setting of first guide bar is favorable to guaranteeing the stability of first piston 3 removal in-process, avoids first piston 3 to be driven the skew first through-hole in back to guarantee first piston 3's reuse. Similarly, the second guide rod is installed on the valve body 1 parallel to the moving track of the second piston 5, one end of the second guide rod is inserted into the second piston 5 and is connected with the second piston 5 in a sliding manner, and the second spring 4 is sleeved on the second guide rod.
In a natural state, the first through hole and the second through hole are blocked by the first piston 3 and the second piston 5, respectively. In a working state, along with the input of liquid into the first chamber 1-1, when the pressure in the first chamber 1-1 reaches a first threshold value, the first spring 2 contracts, the first through hole is opened, when the pressure in the first chamber 1-1 reaches a second threshold value, the second spring 4 contracts, the second through hole is opened, and the second threshold value is larger than the first threshold value. Thus, in this embodiment, when the hydraulic control valve works normally, the normal control of the liquid flow channel can be ensured through the liquid inlet 1A, the first cavity 1-1, the second cavity 1-2 and the liquid outlet 1B; when the input runner connected with the liquid inlet 1A is abnormally gushed or the output runner connected with the liquid outlet 1B is blocked, the second piston 5 is moved by compressing the second spring 4, so that the pressure is released through the pressure relief port 1C, the safety of the runner where the whole hydraulic valve is located is ensured, and the abnormal timely discovery and troubleshooting are facilitated.
In the present embodiment, the first piston 3 and the second piston 5 have a symmetrical structure. Therefore, the pressure relief time of the third chambers 1-3 can be directly controlled through the control of the compression allowance of the first spring 2 and the second spring 4, and the working of the hydraulic control valve is convenient to control.
The above description is only for the purpose of illustrating the present disclosure, and the scope of the present disclosure is not limited thereto, and any person skilled in the art should be able to substitute or change the technical solutions and concepts of the present disclosure within the technical scope of the present disclosure.
Claims (6)
1. A symmetrical hydraulic control valve, comprising: the valve comprises a valve body (1), wherein a first cavity (1-1), a second cavity (1-2) and a third cavity (1-3) are arranged in the valve body (1), and a liquid inlet (1A), a liquid outlet (1B) and a pressure relief opening (1C) which are respectively communicated with the first cavity (1-1), the second cavity (1-2) and the third cavity (1-3) are formed in the valve body (1);
the first chamber (1-1) is communicated with the second chamber (1-2) through a first through hole, and the first chamber (1-1) is communicated with the third chamber (1-3) through a second through hole; a first spring (2) and a first piston (3) are arranged in the second chamber (1-2); one end of the first spring (2) is fixedly arranged on the valve body (1), and the other end of the first spring is connected with the first piston (3); one end of the first piston (3) far away from the first spring (2) is inserted into the first through hole; a second spring (4) and a second piston (5) are arranged in the third chamber (1-3); one end of a second spring (4) is fixedly arranged on the valve body (1), and the other end of the second spring is connected with a second piston (5); one end of the second piston (5) far away from the second spring (4) is inserted into the second through hole;
in a natural state, the first through hole and the second through hole are respectively blocked by the first piston (3) and the second piston (5); in the working state, along with the liquid input of the first chamber (1-1), when the pressure in the first chamber (1-1) reaches a first threshold value, the first spring (2) contracts, the first through hole is opened, when the pressure in the first chamber (1-1) reaches a second threshold value, the second spring (4) contracts, the second through hole is opened, and the second threshold value is larger than the first threshold value.
2. A pilot operated valve of symmetrical construction according to claim 1 characterised in that the first piston (3) and the second piston (5) are of conical or convex configuration.
3. A pilot operated valve of symmetrical construction according to claim 1 characterised in that the first piston (3) and the second piston (5) are of symmetrical construction.
4. The hydraulic control valve with a symmetrical structure as claimed in claim 1, wherein the second chamber (1-2) is provided with a first guide rod, the first guide rod is arranged on the valve body (1) in parallel with the moving track of the first piston (3), one end of the first guide rod is inserted into the first piston (3) and is connected with the first piston (3) in a sliding way, and the first spring (2) is sleeved on the first guide rod.
5. A hydraulic control valve with a symmetrical structure according to claim 1, characterized in that a second guide rod is arranged in the third chamber (1-3), the second guide rod is arranged on the valve body (1) in parallel with the moving track of the second piston (5), one end of the second guide rod is inserted into the second piston (5) and is connected with the second piston (5) in a sliding way, and the second spring (4) is sleeved on the second guide rod.
6. A hydraulic control valve of symmetrical structure according to any one of claims 1 to 5, characterized in that the first piston (3) and the second piston (5) are coated with a sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810542406.0A CN108662208B (en) | 2018-05-30 | 2018-05-30 | Hydraulic control valve with symmetrical structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810542406.0A CN108662208B (en) | 2018-05-30 | 2018-05-30 | Hydraulic control valve with symmetrical structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108662208A CN108662208A (en) | 2018-10-16 |
| CN108662208B true CN108662208B (en) | 2020-08-21 |
Family
ID=63774666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810542406.0A Active CN108662208B (en) | 2018-05-30 | 2018-05-30 | Hydraulic control valve with symmetrical structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108662208B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902548B (en) * | 2019-11-19 | 2022-11-04 | 英业达科技有限公司 | Cooling device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203023546U (en) * | 2012-12-28 | 2013-06-26 | 长安大学 | Tee joint |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1182776A (en) * | 1997-09-08 | 1999-03-26 | Kurimoto Shoji Kk | Pressure reduction type reverse flow preventing device |
| CN2339815Y (en) * | 1997-10-07 | 1999-09-22 | 李肇伦 | Super-high-pressure plunger pump one-way valve |
| CN2494462Y (en) * | 2001-06-21 | 2002-06-05 | 青岛弘运机电制造有限公司 | Multifunctional safety valve |
| US6698197B1 (en) * | 2002-11-26 | 2004-03-02 | Eaton Corporation | Hydraulically actuated by-pass valve |
| CN204852731U (en) * | 2015-07-08 | 2015-12-09 | 福建省海洋阀门科技有限公司 | Double check valve tee bend structure |
-
2018
- 2018-05-30 CN CN201810542406.0A patent/CN108662208B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203023546U (en) * | 2012-12-28 | 2013-06-26 | 长安大学 | Tee joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108662208A (en) | 2018-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108223816B (en) | Hydraulic drive pilot type emergency cut-off valve | |
| CN203248431U (en) | Unloading valve, hydraulic oil cylinder oil return backpressure unloading device and engineering machine | |
| CN204226809U (en) | A kind of stop valve structure | |
| CN108662208B (en) | Hydraulic control valve with symmetrical structure | |
| CN204344557U (en) | A kind of ultrahigh pressure pilot operated compound relief valve | |
| CN110131433B (en) | Switching valve capable of increasing response time | |
| CN108518376B (en) | Automatic reversing valve | |
| CN201176863Y (en) | Pressure and flow controlled gas recovery well head safety closing device | |
| CN110864024B (en) | Oil discharge conversion valve and hydraulic retraction system | |
| CN201568065U (en) | Sequence valve for hydraulic support | |
| CN108626192B (en) | Automatic control reversing valve | |
| US6276396B1 (en) | Directional control valves | |
| CN100999987B (en) | Electrohydraulic compound switch controlling valve for oil water well working with pressure | |
| CN106907518B (en) | Double-acting pneumatic reset electric open type actuating mechanism | |
| CN2883816Y (en) | Slit ring sealed smart hydraulic control valve | |
| KR101422812B1 (en) | Hydraulic apparatus for sluice gate using air elimination valve | |
| GB2594369A (en) | Combined chemical/balance line | |
| CN104696565A (en) | Guide structure based anti-explosion valve | |
| CN203948648U (en) | Duplex channel pressure medium sealing valve unit | |
| CN105370927A (en) | Hydraulically-controlled one-way valve | |
| CN202149228U (en) | Adjusting valve | |
| CN101368641A (en) | Unloading type liquid-control hydraulic break valve and its opening method | |
| CN104948769A (en) | Cartridge valve and control method | |
| CN114294288B (en) | Overflow valve | |
| CN220185997U (en) | Hydraulic control device for water inlet valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |