CN101430987B - Pressure relay - Google Patents
Pressure relay Download PDFInfo
- Publication number
- CN101430987B CN101430987B CN2007100478507A CN200710047850A CN101430987B CN 101430987 B CN101430987 B CN 101430987B CN 2007100478507 A CN2007100478507 A CN 2007100478507A CN 200710047850 A CN200710047850 A CN 200710047850A CN 101430987 B CN101430987 B CN 101430987B
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- CN
- China
- Prior art keywords
- spring
- connecting rod
- pressure switch
- spool
- valve core
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a pressure relay, includes the valve body, sets up the wiring plug on the valve body to and connect the valve core plug-in components that insert in the valve body, have the case chamber in the valve core plug-in components, case chamber one end has the oil inlet, is provided with the case in the oil inlet, and case one end is provided with the switch connecting rod, and switch connecting rod opposite side is provided with the spring, and the spring other end has a spring holder, and the spring holder other end has the shutoff, micro switch is connected to the switch connecting rod, micro switch circuit connection wiring plug, the oil inlet end of case has the sleeve, a connecting rod has between micro switch and the case. The invention improves the hydraulic impact resistance of the valve core, adopts the one-way sealing for the tetrafluoro shaft, improves the reliability of the sealing, reduces the friction force, avoids the creeping phenomenon of the push rod, adopts the steel ball combined spring seat, improves the axial stress state of the spring and improves the linearity of pressure regulation control.
Description
Technical field
The present invention relates to the electric former Element Technology field in the mechanical-hydraulic equipment, concrete relate to a kind of pressure switch.
Background technology
The present pressure switch used of domestic industry, mostly exist complex structure, bulky, cost an arm and a leg, what have also exists seepage control difficult; It is low to regulate the shelves number; Poor reliability is difficult to adapt to the needs in some machinery hydraulic systems, and brings certain trouble to ordinary production and maintenance thus.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the problem that exists in the prior art, and a kind of pressure switch is provided.
In order to address the above problem technical scheme of the present invention is such:
A kind of pressure switch comprises valve body, is arranged on the connection plug on the valve body, and connects the valve core plug-in unit that inserts in the valve body; Have spool chamber in the said valve core plug-in unit, spool chamber one end has oil-in, is provided with spool in the oil-in; Spool one end is provided with the switch connecting rod, and switch connecting rod opposite side is provided with spring, and the spring other end has a spring base; The spring base other end has shutoff, and said switch connecting rod connects microswitch, and the microswitch circuit connects connection plug; It is characterized in that the oil-in end of said spool has sleeve, have screw between said sensitive switch and the spool plug-in unit.
Said sleeve one end is enclosed within on the spool, and other end inside has damping conductor, has the damping hole of perforation in the middle of the damping conductor.
Said switch connecting rod one end is connected on the valve core plug-in unit through pin, and what the other end was movable touches on sensitive switch, and the tool one side side that caves in is protruding on the axis of switch connecting rod middle part, and recess is against on the valve core, and high spot is enclosed within on the spring.
Said spring base is the steel ball and spring seat, between spring base and shutoff, is provided with a steel ball.
Said shutoff middle part have one prop up steel ball push rod, the said push rod other end has the bolt of a scalable push rod degree of depth.
On the inboard valve core of sleeve, have the tetrafluoro axle and use one-way sealing.
Said pressure switch is a tubular type setting pressure relay.
Said pressure switch is stack setting pressure relay.
Said pressure switch is a base plate setting pressure relay.
Beneficial effect, the present invention has improved the anti-hydraulic shock performance of valve core, adopts the tetrafluoro axle to use single-phase sealing; Improve the reliability of sealing, reduced frictional force, avoided the creeping phenomenon of push rod; Adopt steel ball cluster spring seat; Improved the axially loaded state of spring, improved the linearity of Regulation Control, that the present invention also has is rational in infrastructure, volume is little, highly sensitive, repeatable accuracy good, easy to assembly, high reliability features.
Description of drawings
Specify the present invention below in conjunction with accompanying drawing and embodiment;
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the structural representation of the embodiment of the invention 2;
Fig. 3 is the structural representation of the embodiment of the invention 3.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
In the mechanism that spool 33, connecting rod 43 and switch connecting rod 44 are formed, when pressure descended suddenly, switch connecting rod 44 pushed back switch connecting rod 44 rapidly because spring force recovers rapidly, and switch connecting rod 44 is blocked by spool plug-in unit 3, unlikely damage sensitive switch 42.
Embodiment 2, and referring to Fig. 2, said pressure switch is stack setting pressure relay.
Embodiment 3, and referring to Fig. 3, said pressure switch is a base plate setting pressure relay.
The present invention has improved the anti-hydraulic shock performance of valve core, adopts the tetrafluoro axle to use one-way sealing, has improved the reliability of sealing; Reduced frictional force; Avoid the creeping phenomenon of push rod, adopted steel ball cluster spring seat, improved the axially loaded state of spring; Improved the linearity of Regulation Control, that the present invention also has is rational in infrastructure, volume is little, highly sensitive, repeatable accuracy good, easy to assembly, high reliability features.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; The present invention also has various changes and modifications under the prerequisite that does not break away from spirit and scope of the invention, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection range to be defined by appending claims and equivalent thereof.
Claims (9)
1. a pressure switch comprises valve body, is arranged on the connection plug on the valve body, and connects the valve core plug-in unit that inserts in the valve body; Have spool chamber in the said valve core plug-in unit, spool chamber one end has oil-in, is provided with spool in the oil-in; Spool one end is provided with the switch connecting rod, and switch connecting rod opposite side is provided with spring, and the spring other end has a spring base; The spring base other end has shutoff, and said switch connecting rod connects microswitch, and the microswitch circuit connects connection plug; It is characterized in that the oil-in end of said spool has sleeve, have screw between said sensitive switch and the spool plug-in unit.
2. a kind of pressure switch according to claim 1 is characterized in that, said sleeve one end is enclosed within on the spool, and other end inside has damping conductor, has the damping hole of perforation in the middle of the damping conductor.
3. a kind of pressure switch according to claim 1; It is characterized in that; Said switch connecting rod one end is connected on the valve core plug-in unit through pin, and what the other end was movable touches on sensitive switch, and the tool one side side that caves in is protruding on the axis of switch connecting rod middle part; Recess is against on the valve core, and high spot is enclosed within on the spring.
4. a kind of pressure switch according to claim 1 is characterized in that, said spring base is the steel ball and spring seat, between spring base and shutoff, is provided with a steel ball.
5. a kind of pressure switch according to claim 1 is characterized in that, said shutoff middle part have one prop up steel ball push rod, the said push rod other end has the bolt of a scalable push rod degree of depth.
6. a kind of pressure switch according to claim 1 is characterized in that, on the inboard valve core of sleeve, has the tetrafluoro axle and uses one-way sealing.
7. a kind of pressure switch according to claim 1 is characterized in that, said pressure switch is a tubular type setting pressure relay.
8. a kind of pressure switch according to claim 1 is characterized in that, said pressure switch is stack setting pressure relay.
9. a kind of pressure switch according to claim 1 is characterized in that, said pressure switch is a base plate setting pressure relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100478507A CN101430987B (en) | 2007-11-06 | 2007-11-06 | Pressure relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100478507A CN101430987B (en) | 2007-11-06 | 2007-11-06 | Pressure relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101430987A CN101430987A (en) | 2009-05-13 |
| CN101430987B true CN101430987B (en) | 2012-05-30 |
Family
ID=40646297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100478507A Expired - Fee Related CN101430987B (en) | 2007-11-06 | 2007-11-06 | Pressure relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101430987B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103390526A (en) * | 2013-07-25 | 2013-11-13 | 恒丰赛特实业(上海)有限公司 | Logic switch and lever thereof |
| CN110715084A (en) * | 2019-10-31 | 2020-01-21 | 北京海德利森科技有限公司 | Ultrahigh pressure safety valve |
| CN114068243A (en) * | 2021-12-02 | 2022-02-18 | 上海立新液压有限公司 | Double-sealing plunger pressure relay |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4525611A (en) * | 1982-03-24 | 1985-06-25 | Nippon Air Brake Co., Ltd. | Fluid pressure switch |
| US5292232A (en) * | 1993-01-19 | 1994-03-08 | Graco Inc. | Liquid pump pressure control system |
| CN2170574Y (en) * | 1993-09-05 | 1994-06-29 | 鞍山钢铁公司 | Anti-running oil relay for hydraulic system |
| US6621021B2 (en) * | 2001-12-05 | 2003-09-16 | Beru Ag | Differential pressure switch and sensor |
| CN201117555Y (en) * | 2007-11-06 | 2008-09-17 | 上海立新液压有限公司 | Pressure relay for hydraulic equipment |
-
2007
- 2007-11-06 CN CN2007100478507A patent/CN101430987B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4525611A (en) * | 1982-03-24 | 1985-06-25 | Nippon Air Brake Co., Ltd. | Fluid pressure switch |
| US5292232A (en) * | 1993-01-19 | 1994-03-08 | Graco Inc. | Liquid pump pressure control system |
| CN2170574Y (en) * | 1993-09-05 | 1994-06-29 | 鞍山钢铁公司 | Anti-running oil relay for hydraulic system |
| US6621021B2 (en) * | 2001-12-05 | 2003-09-16 | Beru Ag | Differential pressure switch and sensor |
| CN201117555Y (en) * | 2007-11-06 | 2008-09-17 | 上海立新液压有限公司 | Pressure relay for hydraulic equipment |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平2-75117A 1990.03.14 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101430987A (en) | 2009-05-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20161106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |