CN205841886U - A kind of hydraulic control one-way valve - Google Patents
A kind of hydraulic control one-way valve Download PDFInfo
- Publication number
- CN205841886U CN205841886U CN201620786663.5U CN201620786663U CN205841886U CN 205841886 U CN205841886 U CN 205841886U CN 201620786663 U CN201620786663 U CN 201620786663U CN 205841886 U CN205841886 U CN 205841886U
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- China
- Prior art keywords
- valve
- hydraulic control
- valve core
- core spring
- spool
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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.)
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Abstract
This utility model provides a kind of hydraulic control one-way valve, belongs to hydraulic bracket control system valve.Including: a spool, a valve core seal ring, a valve core spring and a pilot valve, described pilot valve central shaft extends back through the cut-off end of valve core spring.Described spool pedestal is provided with counterbore, and for fixing the terminal of described valve core spring, the central shaft of pilot valve extends back through this counterbore.No matter with or without External Force Acting, valve core spring is compressed as before and after the axis of guide by pilot valve all the time, and valve will not be deformed at instantaneous pressure impact bottom spool spring, thus does the high reliability of whole valve.
Description
Technical field
This utility model relates to hydraulic bracket control system valve, particularly relates to a kind of hydraulic control one-way valve.
Background technology
Hydraulic control one-way valve is dependent on controlling fluid pressure, can make the valve of check valve reverse circulated.This valve is at coal mining machine
The hydraulic prop equipment of tool occupies more important status.How hydraulic control one-way valve and common check valve have been a difference in that a control
Liquefaction road K, as it is shown in figure 1, when oil circuit control K access failure pressure oil liquid, hydraulic control one-way valve is as the same work of common check valve
Making, pressure oil only flows to oil-out Kb from oil-in Ka, it is impossible to reverse flow.When oil circuit control K has control pressure oil input,
Piston mandril 10 moves right under pressure oil effect, backs down check valve, makes pressure oil be possible not only to flow to from oil-in Ka
Oil-out Kb, additionally it is possible to flow to oil-in Ka from oil-out Kb, also realize the reverse flow of hydraulic control one-way valve.Tradition check valve bag
Including valve body, offer through hole in valve body, each part of hydraulic control one-way valve is the most in axial direction assemblied in this through hole.Piston push rod 10
Promote spool to depart from sealing gasket 20 under the effect of hydraulic coupling, thus complete the course of action of open check valve, this structure
Hydraulic control one-way valve has weak point: when piston push rod 10 unloads, due to the pressure in system and control pressure imbalance, therefore
Serious instantaneous pressure can be caused to impact, and this transient impact pressure is sometimes over the 190% to 380% of operating pressure.Liquid
Control check valve is under instantaneous pressure impacts, and the hindfoot portion 41 of spring 40, owing to being in outside valve core case, it is impossible to axial along piston
Movable, cause spring 40 to be easily bent deformation and even rupture, significantly impact the service life of hydraulic control one-way valve.
Utility model content
For overcoming disadvantage mentioned above, this utility model provides a kind of simple in construction, the hydraulic control one-way valve of good reliability.
For reaching above-mentioned purpose, this utility model provides a kind of hydraulic control one-way valve, including a: spool, a valve core seal ring,
One valve core spring and a pilot valve, described pilot valve central shaft extends back through the cut-off end of valve core spring.
Described spool pedestal is provided with a counterbore, and for fixing the terminal of described valve core spring, the central shaft of pilot valve is worn
Cross this counterbore to extend back.
Due to the hydraulic control one-way valve of said structure, pilot valve central shaft extends back through the cut-off end of valve core spring,
No matter with or without hydraulic control External Force Acting, valve core spring is compressed as before and after the axis of guide by pilot valve all the time, and valve rushes at instantaneous pressure
Hit bottom spool spring all without being deformed, thus do the high reliability of whole valve.
Accompanying drawing explanation
Fig. 1 represents prior art hydraulic control one-way valve generalized section.
Fig. 2 represents this utility model hydraulic control one-way valve generalized section.
Fig. 3 represents A close-up schematic view shown in Fig. 2.
Detailed description of the invention
Below in conjunction with this utility model most preferred embodiment.
As shown in Figures 2 and 3, a kind of hydraulic control one-way valve, including spool 30 ", valve core seal ring 20 ", valve core spring 40 "
With pilot valve 50 ", pilot valve 50 " central shaft is through valve core spring 40 " and cut-off end extend back.Spool 30 " pedestal
60 " be provided with a counterbore 61 ", for fixed spool spring 40 " terminal, pilot valve 50 " central shaft through this counterbore 61 " to
Rear extension.
The piston push rod 10 of hydraulic control mouth K end " under fluid control pressure effect, heap movable valve plug 30 forward ", now, valve core spring
40 " with pilot valve 50 " it is that the axis of guide produces compression, be allowed to and valve core seal ring 20 " separate, it is achieved hydraulic control list elder generation valve reverse
Conducting.
The hydraulic control one-way valve of said structure, no matter with or without External Force Acting, valve core spring 40 " all the time by pilot valve 50 " make
For compressing before and after the axis of guide, valve will not be deformed at instantaneous pressure impact bottom spool spring, thus done the whole valve of height can
By property.
Claims (2)
1. a hydraulic control one-way valve, including a: spool (30 "), a valve core seal ring (20 "), a valve core spring (40 ") and
Pilot valve (50 "), it is characterised in that described pilot valve (50 ") central shaft through valve core spring (40 ") cut-off end to
Rear extension.
2. according to the hydraulic control one-way valve described in claim 1, it is characterised in that described spool (30 ") and pedestal (60 ") it is provided with one
Counterbore (61 "), is used for fixing the terminal of described valve core spring (40 "), and the central shaft of pilot valve (50 ") is through this counterbore
(61 ") extend back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620786663.5U CN205841886U (en) | 2016-07-25 | 2016-07-25 | A kind of hydraulic control one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620786663.5U CN205841886U (en) | 2016-07-25 | 2016-07-25 | A kind of hydraulic control one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205841886U true CN205841886U (en) | 2016-12-28 |
Family
ID=57626130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620786663.5U Active CN205841886U (en) | 2016-07-25 | 2016-07-25 | A kind of hydraulic control one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205841886U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514273A (en) * | 2017-09-23 | 2017-12-26 | 鸿大智能机械有限公司 | Column pilot operated check valve |
| CN107630712A (en) * | 2017-09-23 | 2018-01-26 | 鸿大智能机械有限公司 | The core assembly of column pilot operated check valve |
| CN109236779A (en) * | 2018-10-31 | 2019-01-18 | 北京天地玛珂电液控制系统有限公司 | Hydraulic control one-way valve and pressure release assembly |
-
2016
- 2016-07-25 CN CN201620786663.5U patent/CN205841886U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514273A (en) * | 2017-09-23 | 2017-12-26 | 鸿大智能机械有限公司 | Column pilot operated check valve |
| CN107630712A (en) * | 2017-09-23 | 2018-01-26 | 鸿大智能机械有限公司 | The core assembly of column pilot operated check valve |
| CN109236779A (en) * | 2018-10-31 | 2019-01-18 | 北京天地玛珂电液控制系统有限公司 | Hydraulic control one-way valve and pressure release assembly |
| CN109236779B (en) * | 2018-10-31 | 2020-07-21 | 北京天地玛珂电液控制系统有限公司 | Hydraulic control one-way valve and pressure relief assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |