CN204459332U - A kind of Pilot operated safety valve - Google Patents
A kind of Pilot operated safety valve Download PDFInfo
- Publication number
- CN204459332U CN204459332U CN201420851150.9U CN201420851150U CN204459332U CN 204459332 U CN204459332 U CN 204459332U CN 201420851150 U CN201420851150 U CN 201420851150U CN 204459332 U CN204459332 U CN 204459332U
- Authority
- CN
- China
- Prior art keywords
- valve
- way valve
- guiding
- pilot operated
- gland
- 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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- Safety Valves (AREA)
Abstract
The utility model relates to a kind of Pilot operated safety valve, comprise main valve body, filler opening, return opening, be nested in the one-way valve of described main valve body inside, the part be connected with described main valve body internal thread is nested in the guiding gland of described one-way valve inside, run through and be arranged at described one-way valve one end, the guiding valve of described filler opening end, one end is through described one-way valve interior forward end, the Returnning spring that the other end and described guiding gland abut against, be arranged at the poppet valve of described guiding gland inside, pressure adjusting spring and pressure regulating screw, the injection moulding locking that spiral is fixed on described pressure regulating screw is female.The utility model supporting multiple directional control valve overload valve use, has the advantage that volume is little, repairing amount is increased work efficiency greatly.
Description
Technical field
The utility model relates to a kind of valve, specifically discloses a kind of Pilot operated safety valve.
Background technique
The Pilot operated safety valve adopted now due to volume excessive, affect operating grip, mix sense organ at multiple directional control valve integral installation inharmonious, seem excessive and heavy, because design deficiency repairing speed affects working efficiency too slowly when needing repairing at work.
Model utility content
Goal of the invention of the present utility model is: provide that a kind of volume is little for overcoming the above problems, repairing amount speed is fast, thus the Pilot operated safety valve of increasing work efficiency.
The technological scheme that the utility model adopts is such:
A kind of Pilot operated safety valve, comprise main valve body, filler opening, return opening, also comprise the one-way valve being nested in described main valve body inside, guiding gland that be connected with described main valve body internal thread, that be partly nested in described one-way valve inside, run through the guiding valve being arranged at described one-way valve one end, described filler opening end, the Returnning spring that one end abuts against through described one-way valve interior forward end, the other end and described guiding gland, be arranged at the poppet valve of described guiding gland inside, pressure adjusting spring and pressure regulating screw, the injection moulding locking that spiral is fixed on described pressure regulating screw is female.
Further, described Returnning spring is initially compressive state, ensures that described one-way valve closes described filler opening and described return opening.
Further, described guiding valve is the guiding valve with damping hole.
Further, described pressure adjusting spring is initially compressive state, ensures that described poppet valve is positioned at described guiding gland foremost.
Further, described poppet valve runs through described guiding gland and extends in the chamber that described one-way valve and described guiding gland surround.
In sum, owing to adopting technique scheme, the beneficial effects of the utility model are:
Design of the present utility model adds the space of main valve body inner chamber, increase one-way valve, make it oil return repairing amount and improve working efficiency more greatly, the size reducing guiding gland makes to be assemblied in exposed parts on multiple directional control valve and reduces, make it more attractive in appearance more to coordinate, overall volume reduces, and main valve body nose threads Conncetion cimension is consistent with existing product ensure that versatility and interchangeability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Mark in figure: 1, main valve body; 2, filler opening; 3, return opening; 4, one-way valve; 5, lead gland; 6, guiding valve; 7, Returnning spring; 8, poppet valve; 9, pressure adjusting spring; 10, pressure regulating screw; 11, injection moulding locking is female.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of Pilot operated safety valve, comprise main valve body 1, filler opening 2, return opening 3, also comprise the one-way valve 4 being nested in described main valve body 1 inside, be connected with described main valve body 1 internal thread, part is nested in the guiding gland 5 of described one-way valve 4 inside, run through and be arranged at described one-way valve 4 one end, the guiding valve 6 with damping hole of described filler opening 2 end, one end is through described one-way valve 4 interior forward end, the Returnning spring 7 that the other end and described guiding gland 5 abut against, be arranged at the poppet valve 8 of described guiding gland 5 inside, pressure adjusting spring 9 and pressure regulating screw 10, described poppet valve 8 runs through described guiding gland 5 and extends in the chamber that described one-way valve 4 and described guiding gland 5 surround, spiral is fixed on the injection moulding locking female 11 on described pressure regulating screw 10, locked by injection moulding locking mother 11 after having set up system pressure by pressure regulating screw 10.
Described Returnning spring 7 is initially compressive state, ensures that described one-way valve 4 closes described filler opening 2 and described return opening 3.
Described pressure adjusting spring 9 is initially compressive state, ensures that described poppet valve 8 is positioned at described guiding gland 5 foremost.
The bijou configuration design of the utility model can with the assembly connection consistent size of first wife's safety valve, and meet the overall appearance design of multiple directional control valve, main valve body 1 nose threads and seal ring and the load of multiple directional control valve oil inlet and oil return mouth difference connect, filler opening 2 is high pressure hydraulic fluid port, return opening 3 is low pressure hydraulic fluid port, when machine work, pressure oil acts on filler opening 2 due to one-way valve 4 and under the effect of Returnning spring 7, belongs to normally off therefore filler opening 2 is obstructed with return opening 3, the high pressure oil namely entered by filler opening 2 when the rising along with system pressure acts on one-way valve 4 left side, pressure oil via guiding valve 6 damping hole and with one-way valve 4 radial fit gap, make it one-way valve 4 intracavity liquid oil pressure also to increase, after overcoming the initial set pressure value of pressure adjusting spring 9, hydraulic oil promotes poppet valve 8 and moves to right and open pilot port one-way valve 4 chamber pressure is reduced, one-way valve 4 moves to right, filler opening 2 communicates with return opening 3, fluid flows back to fuel tank by return opening 3, play system overload protection and system pressure balanced action.When to connect hydraulic fluid port be decline hydraulic fluid port be return opening to safety valve, due to the effect of return opening 3 return pressure, pressure oil promotion one-way valve 4 moves to right-hand member and filler opening 2 is communicated with return opening 3, hydraulic oil flows back to fuel tank fast by return opening 3 and plays large discharge repairing, plays the QA object of the rapid accessory of repairing.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a Pilot operated safety valve, comprise main valve body, filler opening, return opening, it is characterized in that: also comprise the one-way valve being nested in described main valve body inside, the part be connected with described main valve body internal thread is nested in the guiding gland of described one-way valve inside, run through and be arranged at described one-way valve one end, the guiding valve of described filler opening end, one end is through described one-way valve interior forward end, the Returnning spring that the other end and described guiding gland abut against, be arranged at the poppet valve of described guiding gland inside, pressure adjusting spring and pressure regulating screw, the injection moulding locking that spiral is fixed on described pressure regulating screw is female.
2. a kind of Pilot operated safety valve according to claim 1, is characterized in that: described Returnning spring is initially compressive state, ensures that described one-way valve closes described filler opening and described return opening.
3. a kind of Pilot operated safety valve according to claim 1 and 2, is characterized in that: described guiding valve is the guiding valve with damping hole.
4. a kind of Pilot operated safety valve according to claim 1, is characterized in that: described pressure adjusting spring is initially compressive state, ensures that described poppet valve is positioned at described guiding gland foremost.
5. a kind of Pilot operated safety valve according to claim 1, is characterized in that: described poppet valve runs through described guiding gland and extends in the chamber that described one-way valve and described guiding gland surround.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420851150.9U CN204459332U (en) | 2014-12-30 | 2014-12-30 | A kind of Pilot operated safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420851150.9U CN204459332U (en) | 2014-12-30 | 2014-12-30 | A kind of Pilot operated safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204459332U true CN204459332U (en) | 2015-07-08 |
Family
ID=53666217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420851150.9U Expired - Fee Related CN204459332U (en) | 2014-12-30 | 2014-12-30 | A kind of Pilot operated safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204459332U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134681A (en) * | 2015-10-08 | 2015-12-09 | 杭州力龙液压有限公司 | One-way cushion overflow valve and closed-type hydraulic pump |
| CN105822794A (en) * | 2016-05-17 | 2016-08-03 | 华南理工大学 | Valve |
-
2014
- 2014-12-30 CN CN201420851150.9U patent/CN204459332U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134681A (en) * | 2015-10-08 | 2015-12-09 | 杭州力龙液压有限公司 | One-way cushion overflow valve and closed-type hydraulic pump |
| CN105134681B (en) * | 2015-10-08 | 2017-06-06 | 杭州力龙液压有限公司 | A kind of one-way buffer overflow valve and closed type hydraulic pump |
| CN105822794A (en) * | 2016-05-17 | 2016-08-03 | 华南理工大学 | 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20171230 |