CN201187608Y - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN201187608Y CN201187608Y CN 200820058247 CN200820058247U CN201187608Y CN 201187608 Y CN201187608 Y CN 201187608Y CN 200820058247 CN200820058247 CN 200820058247 CN 200820058247 U CN200820058247 U CN 200820058247U CN 201187608 Y CN201187608 Y CN 201187608Y
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- CN
- China
- Prior art keywords
- valve seat
- valve
- safety valve
- utility
- model
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- 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 relates to a safety valve which comprises a valve seat (1) and a valve core (4), wherein, the valve core (4) is positioned in the valve seat (1). The safety valve is characterized in that a universal adapter is arranged at the connector end of the valve seat (1), and a sealing ring (2) and a sealing retaining ring (3) are installed at the connector end of the valve seat (1); a clipping groove (22) is arranged at the connector end of the valve seat (1); the connector end of the valve seat (1) is installed on an adapter of a hydraulic system in a butt joint method of the adapter and clipped through a clipping part in the clipping groove (22). The utility model has the advantages that the sealing performance is good, and the safety valve can be quickly inserted and pulled out in the hydraulic system, therefore, the operation is simple and convenient.
Description
Technical field
The utility model relates to a kind of safety valve, belongs to the relief valve that is installed in the hydraulic system (pump such as oil pump), and when the pressure of hydraulic system reached set setting value, overflowing liquid made pressure can not reach unusually, thereby makes stability hydraulic, safety.
Background technique
In hydraulic system (pump such as oil pump), safety valve is installed.The spool of safety valve overcomes hydraulic pressure by the elastic force of spring, slides vertically based on hydraulic pressure.When the pressure of hydraulic system reached a certain setting value, the spool of this safety valve moved, and outside the liquid outlet expulsion valve, promptly liquid overflows.Safety valve is to stable liquid pressure, and the safe handling of protection hydraulic element is most important, and therefore, it is used also more and more widely.Yet, existing hydraulic element, especially homemade hydraulic element fluid occurs through regular meeting and reveal, and wherein also comprise safety valve.The inflammable fluid of this leakage in explosion-proof occasions of needs such as coal mine machineries, is forbidden occurring.In addition, the liquid of being revealed can pollute environment, does not also meet environmental requirement.So " safety valve " be " safety " not, caused applying of safety valve to be restricted, restricted the development of hydraulics then.
The model utility content
The utility model is to solve above-mentioned existing issue, and a kind of safety valve of good seal performance is provided.
For this reason, safety valve of the present utility model comprises valve seat, and the interface end of described valve seat adopts the universal joint form, in the interface end of described valve seat seal ring and Sealing shield ring is installed; On the interface end of described valve seat, be provided with draw-in groove; The interface end of described safety valve is installed on the joint of hydraulic system with the joint docking mode, and blocks with fastener at described draw-in groove place.
The utility model safety valve adopts seal ring and Sealing shield ring on joint, guaranteed the inside and outside sealing of safety valve valve body.On the one hand, this sealing has prevented the outside leakage of liquid in the valve body, has avoided safety valve to the pollution of environment or reduced fire safety evaluating hidden danger.On the other hand, this sealing has prevented that extraneous rainwater, dust, air etc. from entering in the valve body, has reduced the burn into pollution of environment to safety valve, has increased the working life of safety valve, has strengthened the operation stability of safety valve.
The described joint of the utility model safety valve adopts universal joint, and the universal joint in energy and the hydraulic system is realized fast insert-pull, and is simple, convenient.
Draw-in groove on the utility model safety valve, make joint on the safety valve be able to fastening, be locked in the hydraulic system, avoided not clear external force that safety valve is done the time spent, produce the misoperation that joint is extracted from valve seat.
In addition, safety valve of the present utility model also comprises the spool that is positioned at valve seat, and described spool and valve base chamber adopt the radial direction seal ring sealing.When the hydraulic coupling of liquid entering hole during less than safety valve setting pressure, gap between spool and the valve seat is sealed by radial direction seal ring, guarantee not leak, thereby make the safety valve hour to quit work fully, stopped safety valve the negative effect of hydraulic system (being hour also dividing potential drop of pressure) at hydraulic system pressure.
The valve body of safety valve of the present utility model adopts corrosion resistant material to make, can anti-corrosion.
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the sectional view of safety valve of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with specific embodiment, further set forth the utility model.
As shown in Figure 1, the present embodiment safety valve mainly is made up of valve seat 1, valve pocket 8, dust cover 12, spool 4, spring 9, front spring seat 7, rear spring seat 10.Wherein, between valve seat 1 and the valve pocket 8 with being threaded, screw 6 down hold out against prevent to connect loosening; Adopt between rear spring seat 10 and the valve pocket 8 to be threaded, rear spring seat 10 can shift moving in long scope inward turning; Adopt radial direction seal ring 5 to seal between the endoporus of the cylindrical of spool 4 and valve seat 1.
The compressive force of spring 9 is regulated by rear spring seat 10, adjusting power as required safety valve setting pressure and decide, regulate the back that finishes and lock with screw 11.
Hydraulic coupling enters the liquid entering hole 21 of valve seat 1 from P, arrives the axial overflow hole 23 of spool 4 and overflow hole 24 radially again, forms thrust on the left side of spool 4 simultaneously, this thrust to front spring seat 7, pressure spring 9.
When the hydraulic coupling at P place during less than safety valve T place setting pressure, front spring seat 7 is pressed in the right side of valve seat 1 by spring 9, radially overflow hole 24 on the spool 4 has one section axial distance with radial direction seal ring 5, gap between the endoporus of the cylindrical of spool 4 and valve seat 1 is sealed by radial direction seal ring 5, guarantees not leak.
When the hydraulic coupling at P place equals safety valve T place setting pressure, spool 4 backs down front spring seat 7 and moves to right, the space appears in the right side of front spring seat 7 left sides and valve seat 1, radially overflow hole 24 is shifted to the right to this space, the liquid at the P place from then on through flow hole 25 on space and the front spring seat 4 enters into spring chamber 26, outside liquid outlet 27 expulsion valves, hydraulic coupling is no longer raise again, play safety effect.
The safety valve of present embodiment in use, the interface end of valve seat 1 adopts the universal joint form, seal ring 2 and Sealing shield ring 3 install on this interface end, be provided with draw-in groove 22 in this interface end, the interface end energy of valve seat 1 and the universal joint in the hydraulic system are realized fast insert-pull, simple, convenient, 22 places are blocked with fastener at draw-in groove.
More than be one of mode of execution of the present utility model,, do not spend performing creative labour, on the basis of the foregoing description, can do multiple variation, can realize the purpose of this utility model equally for those skilled in the art.But this variation obviously should be in the protection domain of claims of the present utility model.
Claims (2)
1, a kind of safety valve, comprise valve seat (1), spool (4), described spool (4) is positioned at described valve seat (1), it is characterized in that: adopt the universal joint form in the interface end of described valve seat (1), in the interface end of described valve seat (1) seal ring (2) and Sealing shield ring (3) are installed; On the interface end of described valve seat (1), be provided with draw-in groove (22); The interface end of described valve seat (1) is installed on the joint of hydraulic system with the joint docking mode, and locates to block with fastener at draw-in groove (22).
2, safety valve as claimed in claim 1 is characterized in that: adopt radial direction seal ring (5) sealing between described spool (4) and valve seat (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820058247 CN201187608Y (en) | 2008-05-09 | 2008-05-09 | Safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820058247 CN201187608Y (en) | 2008-05-09 | 2008-05-09 | Safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201187608Y true CN201187608Y (en) | 2009-01-28 |
Family
ID=40310630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820058247 Expired - Fee Related CN201187608Y (en) | 2008-05-09 | 2008-05-09 | Safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201187608Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363170A (en) * | 2012-04-06 | 2013-10-23 | 重庆博张机电设备有限公司 | Pressure regulating valve |
-
2008
- 2008-05-09 CN CN 200820058247 patent/CN201187608Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363170A (en) * | 2012-04-06 | 2013-10-23 | 重庆博张机电设备有限公司 | Pressure regulating valve |
| CN103363170B (en) * | 2012-04-06 | 2015-08-19 | 重庆博张机电设备有限公司 | Pressure regulator valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20090128 Termination date: 20160509 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |