CN202065265U - Plug-in type medium-flow hard sealing unidirectional lock - Google Patents
Plug-in type medium-flow hard sealing unidirectional lock Download PDFInfo
- Publication number
- CN202065265U CN202065265U CN2011201445998U CN201120144599U CN202065265U CN 202065265 U CN202065265 U CN 202065265U CN 2011201445998 U CN2011201445998 U CN 2011201445998U CN 201120144599 U CN201120144599 U CN 201120144599U CN 202065265 U CN202065265 U CN 202065265U
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- CN
- China
- Prior art keywords
- valve
- plug
- valve seat
- spring
- piston
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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 discloses a plug-in type medium-flow hard sealing unidirectional lock, which is suitable for control of an oil cylinder of a support and comprises a screw sleeve. A spring is arranged in the screw sleeve, the other end of the spring is fixed to a valve spool, and the valve spool and a valve seat in threaded connection on the screw sleeve form hard conical surface sealing under the action of the spring, so that a plug-in type hydraulic component is formed completely. The top end of the valve spool penetrates through the valve seat and extends out of an end opening of the valve seat, a piston supported by a small spring and used for control is mounted on the inner side of a valve, and threads are arranged in the middle of the piston so that the piston can be mounted and dismounted conveniently. By adopting the plug-in type hard sealing structure, the plug-in type medium-flow hard sealing unidirectional lock is high in system integration level, high in reliability, long in service life and easy to mount and maintain, can be repaired by directly replacing the plug-in type hydraulic component, and accordingly is simple, convenient and reliable.
Description
Technical field
The utility model relates to unidirectional lock field, is specially the unidirectional lock of the hard sealing of flow in a kind of plug-in type.
Background technique
Along with the colliery usage requirement more and more develops towards integrated and automation direction, reliability and working life require also more and more higher, traditional unidirectional lock is owing to adopt the conical surface seal of valve pad sealing or polyoxymethylene material, working life and accommodative ability of environment deficiency, valve pad is easy to destroy under the extruding repeatedly of valve seat, the sealing of conical surface polyoxymethylene also can be caused seal failure by cinder or other hard thing destruction, the part kind of valve inner is many, repair also very inconvenience, more and more do not satisfied the demand of colliery applying unit.
The model utility content
The purpose of this utility model provides in a kind of plug-in type the unidirectional lock of the hard sealing of flow, with unidirectional lock working life of solving prior art with adaptive capacity is low and the problem of maintenance difficult.
In order to achieve the above object, the technological scheme that the utility model adopted is:
The unidirectional lock of the hard sealing of flow in a kind of plug-in type, include valve body, in the described valve body valve pocket is arranged, also have a plurality of liquid inlet and outlet that are communicated with valve pocket on the valve body, it is characterized in that: have swivel nut to be installed in the valve pocket from valve pocket one end of valve body, also be provided with valve seat in the described valve pocket, described swivel nut and valve seat are screwed together and are one, also are slidingly fitted with piston in the described valve pocket; Be slidingly fitted with spool in the described valve seat, described spool becomes cone-shaped towards swivel nut one end, the spool the other end passes valve seat and points to described piston, be provided with spring in the described swivel nut, described spring one end is fixed in the swivel nut, the other end is fixed on valve core cone shape one end, described spool constitutes the conical surface by spring action in valve seat and seals firmly, be connected with little spring between described piston and the valve seat, described little spring is enclosed within spool and passes outside the part of valve seat, and little spring one end is connected on the valve seat, and the other end is connected on the piston.
The utility model adopts the plug-in type hard sealing structure, and level of integrated system height, good reliability, long service life are easy to installation and maintenance, directly repairs this unidirectional lock by changing the plug-in type hydraulic package, and is simple and convenient reliable.Part of the present utility model and structure equally can with same a series of Pilot operated check valve of middle flow, reversible lock forms interchangeability.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
As shown in Figure 1.The utility model structural type is fit to the oil cylinder control of support, comprise the swivel nut 1 of being with relief valve connection, there has been the spring 2 that supports reset response swivel nut 1 inside, the other end of spring 2 is fixed on spool 3 inside, spool 3 seals firmly by spring 2 effects and the valve seat 4 formation conical surfaces that are threaded on the swivel nut 1, the a whole set of plug-in type hydraulic package that forms, valve seat 4 is passed on spool 3 tops, stretch out valve seat 4 ports, the piston 6 of making usefulness that starts to control that is supported by little spring 5 is contained in valve body 7 inboards, and the screw thread that is easy for installation and removal is arranged in the middle of the piston 6.
The plug-in type hard sealing structure is adopted in this practicality, and level of integrated system height, good reliability, long service life are easy to installation and maintenance, directly repairs this unidirectional lock by changing the plug-in type hydraulic package, and is simple and convenient reliable.
Two active chamber structures are identical, its working principle is as follows: the Placement of this unidirectional lock is: the PA mouth connects selector valve work sap cavity, the relative work sap cavity of selector valve that the PB termination is corresponding with PA, the A mouth connects a chamber of wanting the locking oil cylinder, the B mouth connects another chamber that does not need locking of this oil cylinder, and A ' mouthful connects safety valve or add stifled.
When operating mode need be controlled cylinder action, selector valve connects the work sap cavity of PA interface and opens feed flow, high-pressure work liquid enters the PA mouth and pushes spool open, working solution enters the back and enters the oil cylinder locked cavity by the A mouth, the one chamber action of this oil cylinder is stretched out, when the PA end stopped feed flow, spool formed the working solution locking that the metal hard-sealing collateral is held this oil cylinder active chamber with valve seat under the pressure of Returnning spring; When operating mode need be controlled the oil cylinder withdrawal, selector valve connects the work sap cavity of PB interface and opens feed flow, the high-pressure work liquid part promotion piston that enters from the PB end backs down spool, open spool and carry out off-load, make locked cavity liquid flow into the liquid return pipe road by PA, another part enters the non-locked cavity of oil cylinder by the B mouth regains locked cavity this active chamber feed liquor.When the PB end stopped feed flow, piston resetted under the little spring effect, and spool and valve seat form the sealing pressurize.
Because the utility model hydraulic package adopts the metal hard-sealing structure, improved the working life and the adaptive capacity of unidirectional lock greatly, dress formula structure makes maintenance more convenient.
Claims (1)
1. the unidirectional lock of the hard sealing of flow in the plug-in type, include valve body, in the described valve body valve pocket is arranged, also have a plurality of liquid inlet and outlet that are communicated with valve pocket on the valve body, it is characterized in that: have swivel nut to be installed in the valve pocket from valve pocket one end of valve body, also be provided with valve seat in the described valve pocket, described swivel nut and valve seat are screwed together and are one, also are slidingly fitted with piston in the described valve pocket; Be slidingly fitted with spool in the described valve seat, described spool becomes cone-shaped towards swivel nut one end, the spool the other end passes valve seat and points to described piston, be provided with spring in the described swivel nut, described spring one end is fixed in the swivel nut, the other end is fixed on valve core cone shape one end, described spool constitutes the conical surface by spring action in valve seat and seals firmly, be connected with little spring between described piston and the valve seat, described little spring is enclosed within spool and passes outside the part of valve seat, and little spring one end is connected on the valve seat, and the other end is connected on the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201445998U CN202065265U (en) | 2011-05-09 | 2011-05-09 | Plug-in type medium-flow hard sealing unidirectional lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201445998U CN202065265U (en) | 2011-05-09 | 2011-05-09 | Plug-in type medium-flow hard sealing unidirectional lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202065265U true CN202065265U (en) | 2011-12-07 |
Family
ID=45059129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201445998U Expired - Fee Related CN202065265U (en) | 2011-05-09 | 2011-05-09 | Plug-in type medium-flow hard sealing unidirectional lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202065265U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192207A (en) * | 2011-05-09 | 2011-09-21 | 巨隆集团芜湖兴隆液压有限公司 | Plug-type middle-flow hard sealing one-way lock |
-
2011
- 2011-05-09 CN CN2011201445998U patent/CN202065265U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192207A (en) * | 2011-05-09 | 2011-09-21 | 巨隆集团芜湖兴隆液压有限公司 | Plug-type middle-flow hard sealing one-way lock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20140509 |