CN105179349A - Automatic pressure switching selector valve - Google Patents
Automatic pressure switching selector valve Download PDFInfo
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- CN105179349A CN105179349A CN201510610456.4A CN201510610456A CN105179349A CN 105179349 A CN105179349 A CN 105179349A CN 201510610456 A CN201510610456 A CN 201510610456A CN 105179349 A CN105179349 A CN 105179349A
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Abstract
The invention belongs to the technical field of hydraulic control valves, and provides an automatic pressure switching selector valve. The valve aims at achieving the technical aim of selecting or detecting of pressure conversion signals in the same hydraulic pipe. The automatic pressure switching selector valve comprises a pressure adjusting screw rod, a pressure plug pin, a valve body, an adjusting spring, a spring seat, a valve element, a valve element O-shaped ring and an end cover. A spring cavity is formed in the middle of one side of the valve body, and the spring seat is arranged at the right end inside the spring cavity; the pressure adjusting screw rod is arranged at the left end inside the spring cavity, and the outer end of the pressure adjusting screw rod extends outside the valve body; the adjusting spring is arranged between the pressure adjusting screw rod and the spring seat, and the valve element is arranged on the right side of the spring seat inside the valve body; the valve element O-shaped ring is arranged on the valve element, and the end cover is arranged at the right end of the valve body; and an oil inlet P is formed in the end cover, and a low-pressure oil opening P1, a high-pressure oil opening P2 and an oil returning opening R are formed in the valve body. The automatic pressure switching selector valve is simple in structure, switching selection of pressure signals can be simply and flexibly achieved, and meanwhile, communication between a non-working oil way and an oil tank can be achieved.
Description
Technical field
The invention belongs to hydraulic control valve technical field, be specifically related to a kind of pressure automatic switchover selector valve.
Background technique
In hydraulic system, often there is the oil circuit of high low pressure conversion, when running into this oil circuit and needing control separation using a certain pressure set points as one or carry out the situation of accurate measurements to the high low pressure signal differed greatly, just require that carrying out automatic switchover to pressure signal selects.Realize this principle of work and power with the technological method that traditional pure hydraulic pressure or electric liquid combine, not only can increase complexity and the fault point of system, design and the maintenance cost of system can be increased simultaneously, and these class methods are implemented that difficulty is large, versatility and flexibility poor.
Summary of the invention
The present invention solves the difficulty choosing or detect of conventional method to pressure switch signal in same hydraulic pipe line and the technical problem of drawback, provides a kind of pressure automatic switchover selector valve.
The technical solution used in the present invention is as follows:
A kind of pressure automatic switchover selector valve, comprise pressure adjusting screw, pressure latch, valve body, Regulation spring, spring seat, spool, spool O type circle and end cap, spring chamber is offered in the middle of the side of valve body, spring seat is arranged on the right-hand member of spring chamber inside, pressure adjusting screw is arranged on the inner left end of spring chamber and pressure adjusting screw outer end extends to the outside of valve body, between spring chamber internal pressure adjusting screw rod and spring seat, Regulation spring is set, spool is arranged in valve body the right side being positioned at spring seat, spool is provided with spool O type circle, end cap is arranged on the right-hand member of valve body, described end cap is provided with oil inlet P, the lower end surface of described valve body is respectively arranged with low pressure hydraulic fluid port P1 and high pressure hydraulic fluid port P2, the upper-end surface of valve body is provided with return opening R, the runner d and runner e that communicate is provided with in valve body, one end of runner d communicates with spring chamber, the other end extends to the outer surface of valve body and is provided with pressure latch, one end of runner e communicates with return opening R, the other end extends to the outer surface of valve body and is provided with pressure latch, runner a and runner b is respectively equipped with vertically in described spool, one end of runner a communicates with spring chamber, one end of runner b communicates with oil inlet P, in spool, radial direction is provided with runner c, runner c communicates with oil inlet P, when the oil pressure of oil inlet P is less than the pressure set points of Regulation spring, runner c communicates with low pressure hydraulic fluid port P1, the other end of runner a communicates with high pressure hydraulic fluid port P2, the other end of runner b does not communicate with high pressure hydraulic fluid port P2, oil inlet P 1 does not communicate with return opening R, when the oil pressure of oil inlet P is greater than the pressure set points of Regulation spring, the other end of runner b communicates with high pressure hydraulic fluid port P2, runner c does not communicate with low pressure hydraulic fluid port P1, the other end of runner a does not communicate with high pressure hydraulic fluid port P2, low pressure hydraulic fluid port P1 communicates with return opening R.
One end end face that end cap is connected with valve body is provided with O type sealed groove, arranges end cap O type circle in O type sealed groove.
Beneficial effect of the present invention:
1. structure of the present invention simple, be easy to make, achieve simply and flexibly and the switching of pressure signal selected, achieve simultaneously and inoperative oil circuit and fuel tank are connected, and versatility is good.
2. the rational valve body of the present invention, valve core structure and runner design cleverly, make whole valve arrangement compact, is easy to processing, reduces cost.
3. the difference of the visual application target of pressure automatic switchover selector valve of the present invention and occasion, is designed to different specifications and precision, is applicable to different hydraulic system applications field, has a good application prospect.
Accompanying drawing explanation
Fig. 1 is internal structure schematic diagram of the present invention;
In figure: 1-pressure adjusting screw, 2-pressure latch, 3-valve body, 4-Regulation spring, 5-spring seat, 6-spool, 7-spool O type circle, 8-end cap O type circle, 9-end cap, 10-spring chamber.
Embodiment
As shown in Figure 1, a kind of pressure automatic switchover selector valve, comprise pressure adjusting screw 1, pressure latch 2, valve body 3, Regulation spring 4, spring seat 5, spool 6, spool O type circle 7 and end cap 9, spring chamber 10 is offered in the middle of the side of valve body 3, spring seat 5 is arranged on the right-hand member of spring chamber 10 inside, pressure adjusting screw 1 is arranged on the inner left end of spring chamber 10 and pressure adjusting screw 1 outer end extends to the outside of valve body 3, between spring chamber 10 internal pressure adjusting screw rod 1 and spring seat 5, Regulation spring 4 is set, spool 6 is arranged on the right side being positioned at spring seat 5 in valve body 3, spool 6 is provided with spool O type circle 7, end cap 9 is arranged on the right-hand member of valve body 3, described end cap 9 is provided with oil inlet P, the lower end surface of described valve body 3 is respectively arranged with low pressure hydraulic fluid port P1 and high pressure hydraulic fluid port P2, the upper-end surface of valve body 3 is provided with return opening R, the runner d and runner e that are connected is provided with in valve body 3, one end of runner d communicates with spring chamber 10, the other end extends to valve body 3 outer surface and is provided with pressure latch 2, one end of runner e communicates with return opening R, and the other end extends to the outer surface of valve body 3 and is provided with pressure latch 2, runner a and runner b is respectively equipped with vertically in described spool 6, one end of runner a communicates with spring chamber 10, one end of runner b communicates with oil inlet P, in spool 6, radial direction is provided with runner c, runner c communicates with oil inlet P, when the oil pressure of oil inlet P is less than the pressure set points of Regulation spring 4, runner c communicates with low pressure hydraulic fluid port P1, the other end of runner a communicates with high pressure hydraulic fluid port P2, the other end of runner b does not communicate with high pressure hydraulic fluid port P2, oil inlet P 1 does not communicate with return opening R, when the oil pressure of oil inlet P is greater than the pressure set points of Regulation spring 4, the other end of runner b communicates with high pressure hydraulic fluid port P2, runner c does not communicate with low pressure hydraulic fluid port P1, the other end of runner a does not communicate with high pressure hydraulic fluid port P2, low pressure hydraulic fluid port P1 communicates with return opening R.
In order to prevent fluid from revealing, one end end face that end cap 9 is connected with valve body 3 is provided with O type sealed groove, arranges end cap O type circle 8 in O type sealed groove.
Working principle of the present invention: pressure oil enters from oil inlet P, when oil inlet P place pressure is less than the pressure set points of Regulation spring 4, oil inlet P is passed through the runner c on spool 6 and the opening between spool 6 and valve body 3 seal face and low pressure hydraulic fluid port P1 and is connected, and low pressure hydraulic fluid port P1 and return opening R is blocked by the shoulder of the shoulder on spool 6 and valve body 3, oil circuit between oil inlet P and high pressure hydraulic fluid port P2 is blocked by the valve opening face of the shoulder on spool 6 and valve body 3, high pressure hydraulic fluid port P2 is communicated with spring chamber 10 by the runner a on spool 6, then the runner d on valve body 3 and runner e and return opening R connects, when oil inlet P place pressure is greater than the pressure set points of Regulation spring 4, pressure oil makes spool 6 switching position, now, the oil circuit that oil inlet P leads to low pressure hydraulic fluid port P1 is sealed blocking-up by the seal face on spool 6 and valve body 3 and spool O type circle 7, low pressure hydraulic fluid port P1 is connected by the opening between the shoulder of spool 6 and the groove of valve body 7 and return opening R, and oil inlet P is connected by the opening between the shoulder of the runner b on spool 6 and spool 6 and the groove of valve body 3 and high pressure hydraulic fluid port P2, oil circuit between high pressure hydraulic fluid port P2 and return opening R is blocked by the valve opening face of the shoulder on spool 6 and valve body 3.The automatic switchover so just namely achieving high low pressure frequent switch operating oil circuit pressure signal is selected, and achieves the protection to low pressure oil way simultaneously.
Working procedure of the present invention: when monitoring or extract the pressure of a certain pressure frequent transitions oil circuit, this valve oil inlet P is accessed corresponding oil circuit, return opening R connected tank, first force value is switched according to actual user demand setting high low pressure, and low pressure hydraulic fluid port P1, high pressure hydraulic fluid port P2 are received on corresponding pressure gauge or oil circuit control, when pressure is lower than setting pressure, low pressure hydraulic fluid port P1 selects low-pressure signal to carry out monitoring, controlling or lead to corresponding executive component, and high pressure hydraulic fluid port P2 and pressure oil cut off and return opening R connects; When pressure is higher than setting pressure, high pressure hydraulic fluid port P2 selects high pressure signal to carry out monitoring, controlling or lead to corresponding executive component, and low pressure hydraulic fluid port P1 and pressure oil cut off and return opening R connects.
When the present invention uses, regulate setting pressure according to actual demand, correctly access corresponding oil circuit according to the actual conditions each hydraulic fluid port of selector valve that to be automatically switched by pressure.If needed, depending on hydraulic system situation, the valve of different size and precision can be made, to adapt to corresponding service condition or operating mode.Utilize this valve to realize and choose the pressure signal that pressure frequently switches oil circuit, there is the feature of simple, flexible operation and highly versatile, reduce the cost and difficulty that realize this principle of work and power, so this pressure automatic switchover selector valve has good application prospect simultaneously.
Claims (2)
1. a pressure automatic switchover selector valve, it is characterized in that: comprise pressure adjusting screw (1), pressure latch (2), valve body (3), Regulation spring (4), spring seat (5), spool (6), spool O type circle (7) and end cap (9), spring chamber (10) is offered in the middle of the side of valve body (3), spring seat (5) is arranged on the inner right-hand member of spring chamber (10), pressure adjusting screw (1) is arranged on spring chamber (10) inner left end and pressure adjusting screw (1) outer end extends to the outside of valve body (3), Regulation spring (4) is set between spring chamber (10) internal pressure adjusting screw rod (1) and spring seat (5), spool (6) is arranged on the right side being positioned at spring seat (5) in valve body (3), spool (6) is provided with spool O type circle (7), end cap (9) is arranged on the right-hand member of valve body (3), (9) are provided with oil inlet P to described end cap, the lower end surface of described valve body (3) is respectively arranged with low pressure hydraulic fluid port P1 and high pressure hydraulic fluid port P2, the upper-end surface of valve body (3) is provided with return opening R, the runner d be connected and runner e is provided with in valve body (3), one end of runner d communicates with spring chamber (10), the other end extends to valve body (3) outer surface and is provided with pressure latch (2), one end of runner e communicates with return opening R, and the other end extends to the outer surface of valve body (3) and is provided with pressure latch (2), runner a and runner b is respectively equipped with vertically in described spool (6), one end of runner a communicates with spring chamber (10), one end of runner b communicates with oil inlet P, spool (6) interior radial direction is provided with runner c, runner c communicates with oil inlet P, when the oil pressure of oil inlet P is less than the pressure set points of Regulation spring (4), runner c communicates with low pressure hydraulic fluid port P1, the other end of runner a communicates with high pressure hydraulic fluid port P2, the other end of runner b does not communicate with high pressure hydraulic fluid port P2, oil inlet P 1 does not communicate with return opening R, when the oil pressure of oil inlet P is greater than the pressure set points of Regulation spring (4), the other end of runner b communicates with high pressure hydraulic fluid port P2, runner c does not communicate with low pressure hydraulic fluid port P1, the other end of runner a does not communicate with high pressure hydraulic fluid port P2, low pressure hydraulic fluid port P1 communicates with return opening R.
2. a kind of pressure automatic switchover selector valve according to claim 1, is characterized in that: one end end face that end cap (9) is connected with valve body (3) is provided with O type sealed groove, arranges end cap O type circle (8) in O type sealed groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510610456.4A CN105179349B (en) | 2015-09-23 | 2015-09-23 | A kind of pressure automatic switchover selector valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510610456.4A CN105179349B (en) | 2015-09-23 | 2015-09-23 | A kind of pressure automatic switchover selector valve |
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| Publication Number | Publication Date |
|---|---|
| CN105179349A true CN105179349A (en) | 2015-12-23 |
| CN105179349B CN105179349B (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510610456.4A Active CN105179349B (en) | 2015-09-23 | 2015-09-23 | A kind of pressure automatic switchover selector valve |
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| CN (1) | CN105179349B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180293A (en) * | 2018-01-23 | 2018-06-19 | 潍坊力创电子科技有限公司 | Double containment gas spray valve |
| CN109236787A (en) * | 2018-11-22 | 2019-01-18 | 李军 | A kind of automatic transfer valve |
| CN109723692A (en) * | 2018-12-18 | 2019-05-07 | 浙江华益精密机械股份有限公司 | Pressure-control valve |
| CN113246223A (en) * | 2021-05-27 | 2021-08-13 | 中煤科工集团沈阳研究院有限公司 | Adjustable ultrahigh-pressure water jet cutting device and using method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1935097C2 (en) * | 1968-07-11 | 1983-07-28 | Monsun-Tison AB, Borås | Valve arrangement with combined overpressure and underpressure function |
| CN101111703A (en) * | 2005-03-10 | 2008-01-23 | 株式会社Taiyo | Switching valve device and fluid pressure cylinder device |
| US20080066464A1 (en) * | 2006-09-20 | 2008-03-20 | Wong Albert C | Vehicular hydraulic system with pressure dump and relief valve arrangement |
| CN202469169U (en) * | 2012-03-16 | 2012-10-03 | 天津天保伍德科技发展有限公司 | Pressure pilot valve |
| CN202629286U (en) * | 2012-06-13 | 2012-12-26 | 山推工程机械股份有限公司 | Change-over valve |
| CN103452158A (en) * | 2012-05-30 | 2013-12-18 | 株式会社水山重工业 | Cylinder hydraulic loss preventing device of hydraulic breaker |
| CN203488472U (en) * | 2013-09-25 | 2014-03-19 | 宁波市恒通液压科技有限公司 | Speed change valve |
| CN104633178A (en) * | 2013-11-08 | 2015-05-20 | 费希尔控制国际公司 | Methods and apparatus to bias spool valves using supply pressure |
| CN204610394U (en) * | 2015-05-14 | 2015-09-02 | 中国飞机强度研究所 | A kind of hydraulic substation |
-
2015
- 2015-09-23 CN CN201510610456.4A patent/CN105179349B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1935097C2 (en) * | 1968-07-11 | 1983-07-28 | Monsun-Tison AB, Borås | Valve arrangement with combined overpressure and underpressure function |
| CN101111703A (en) * | 2005-03-10 | 2008-01-23 | 株式会社Taiyo | Switching valve device and fluid pressure cylinder device |
| US20080066464A1 (en) * | 2006-09-20 | 2008-03-20 | Wong Albert C | Vehicular hydraulic system with pressure dump and relief valve arrangement |
| CN202469169U (en) * | 2012-03-16 | 2012-10-03 | 天津天保伍德科技发展有限公司 | Pressure pilot valve |
| CN103452158A (en) * | 2012-05-30 | 2013-12-18 | 株式会社水山重工业 | Cylinder hydraulic loss preventing device of hydraulic breaker |
| CN202629286U (en) * | 2012-06-13 | 2012-12-26 | 山推工程机械股份有限公司 | Change-over valve |
| CN203488472U (en) * | 2013-09-25 | 2014-03-19 | 宁波市恒通液压科技有限公司 | Speed change valve |
| CN104633178A (en) * | 2013-11-08 | 2015-05-20 | 费希尔控制国际公司 | Methods and apparatus to bias spool valves using supply pressure |
| CN204610394U (en) * | 2015-05-14 | 2015-09-02 | 中国飞机强度研究所 | A kind of hydraulic substation |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180293A (en) * | 2018-01-23 | 2018-06-19 | 潍坊力创电子科技有限公司 | Double containment gas spray valve |
| CN108180293B (en) * | 2018-01-23 | 2024-06-07 | 潍坊力创电子科技有限公司 | Double-sealing gas injection valve |
| CN109236787A (en) * | 2018-11-22 | 2019-01-18 | 李军 | A kind of automatic transfer valve |
| CN109236787B (en) * | 2018-11-22 | 2020-03-31 | 乐清市同丰大鲵驯养繁殖有限公司 | Automatic switching valve |
| CN109723692A (en) * | 2018-12-18 | 2019-05-07 | 浙江华益精密机械股份有限公司 | Pressure-control valve |
| CN109723692B (en) * | 2018-12-18 | 2023-11-03 | 浙江三尚智迪科技有限公司 | pressure control valve |
| CN113246223A (en) * | 2021-05-27 | 2021-08-13 | 中煤科工集团沈阳研究院有限公司 | Adjustable ultrahigh-pressure water jet cutting device and using method |
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| Publication number | Publication date |
|---|---|
| CN105179349B (en) | 2017-03-29 |
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