CN205605521U - Circuit breaker hydraulic pressure operating mechanism and pilot valve thereof - Google Patents
Circuit breaker hydraulic pressure operating mechanism and pilot valve thereof Download PDFInfo
- Publication number
- CN205605521U CN205605521U CN201620216383.0U CN201620216383U CN205605521U CN 205605521 U CN205605521 U CN 205605521U CN 201620216383 U CN201620216383 U CN 201620216383U CN 205605521 U CN205605521 U CN 205605521U
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- China
- Prior art keywords
- valve rod
- valve
- wear ring
- spool
- axis direction
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- 238000009434 installation Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 abstract description 8
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 229950000845 politef Drugs 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Landscapes
- Sliding Valves (AREA)
- Lift Valve (AREA)
- Details Of Valves (AREA)
Abstract
The utility model discloses a circuit breaker hydraulic pressure operating mechanism and pilot valve thereof, pilot valve include that valve rod and cover establish seal assembly on the valve rod, seal assembly is followed with the valve rod by O type sealing washer and wear ring, wear ring sliding sealed fit on the valve rod axis direction, the sealed snare of O type is established on the wear ring. The utility model discloses establish the sealed snare of O type on the wear ring, when O type sealing washer received the external force compression, O type sealing washer pushes the wear ring along radial orientation made the wear ring compress tightly the valve rod, realizes sealedly. No longer there is frictional force between O type sealing washer and the valve rod, reduced the frictional force that the valve rod received when reciprocating, remove more in a flexible way.
Description
Technical field
This utility model relates to a kind of chopper hydraulic actuating mechanism and pilot valve thereof.
Background technology
Hydraulic actuating mechanism is one of vitals in chopper, pilot valve as a key component of hydraulic actuating mechanism, the performance of pilot valve one of principal element of problem such as cause operating mechanism leakage of oil, divide-shut brake characteristic defective often.Pilot valve is also a kind of hydraulicdirectional control valve, and hydraulicdirectional control valve is the motion utilizing spool relative to valve body, makes oil circuit connect, turns off or convert the direction of oil stream, thus realizes hydraulic actuator and the startup of drive mechanism thereof, stop or converting the direction of motion.
Of the prior art a kind of pilot valve as shown in Figure 1-2, this pilot valve includes valve seat, spool, valve rod 20, and valve rod 20 is plugged on spool along the vertical direction.Valve plug is fixed on the top of spool.In order to ensure that the hydraulic oil entering into spool from fuel feed hole flows upwards out along the periphery of valve rod, it is formed with black box between valve plug and spool and cavity is installed, black box is made up of back-up ring 30 and O RunddichtringO 40, O RunddichtringO 40, back-up ring 30 are set on valve rod 20, and back-up ring 30 is positioned at the upside of O RunddichtringO.After O RunddichtringO 40, back-up ring 30 assemble, by the deformation of O RunddichtringO 40, it is achieved with the slipper seal of valve rod.But O RunddichtringO, back-up ring are setting up and down, the frictional force between both and valve rod is big, and valve rod moves up and down dumb.It addition, for the less valve rod of diameter, black box is bad with the sealing effectiveness of valve rod.
Summary of the invention
The purpose of this utility model is to provide a kind of pilot valve, to solve the technical problem that between pilot valve black box of the prior art and valve rod, frictional force is big, sealing effectiveness is bad.This utility model also provides for a kind of chopper hydraulic actuating mechanism using this pilot valve simultaneously.
In order to realize object above, in this utility model, the technical scheme of pilot valve is as follows: pilot valve, including valve rod and be set in the black box on described valve rod, black box is by O RunddichtringO and wear ring, described wear ring coordinates with valve rod slipper seal along described valve rod axis direction, and described O RunddichtringO is set on described wear ring.
Described pilot valve also includes valve seat and is positioned at the spool of valve seat, valve plug, described valve rod moves along its axis direction and is assemblied on spool, being formed with the installation cavity for installing described black box between described spool and described valve plug, described O RunddichtringO is in compressive state.
In being provided with circular groove towards the side of described spool on described valve plug, between described circular groove and the sidewall towards described valve plug of described spool formed described in installation cavity.
The groove depth of described circular groove and the consistency of thickness of described wear ring, the thickness direction of described wear ring is consistent with described valve rod axis direction.
Described valve rod is made up of cylindrical section and conical section, and described wear ring coordinates with the slipper seal along described valve rod axis direction of the cylindrical section of described valve rod.
This utility model chopper hydraulic actuating mechanism adopts the following technical scheme that chopper hydraulic actuating mechanism includes pilot valve, pilot valve includes valve rod and is set in the black box on described valve rod, black box is by O RunddichtringO and wear ring, described wear ring coordinates with valve rod slipper seal along described valve rod axis direction, and described O RunddichtringO is set on described wear ring.
Described pilot valve also includes valve seat and is positioned at the spool of valve seat, valve plug, described valve rod moves along its axis direction and is assemblied on spool, being formed with the installation cavity for installing described black box between described spool and described valve plug, described O RunddichtringO is in compressive state.
In being provided with circular groove towards the side of described spool on described valve plug, between described circular groove and the sidewall towards described valve plug of described spool formed described in installation cavity.
The groove depth of described circular groove and the consistency of thickness of described wear ring, the thickness direction of described wear ring is consistent with described valve rod axis direction.
Described valve rod is made up of cylindrical section and conical section, and described wear ring coordinates with the slipper seal along described valve rod axis direction of the cylindrical section of described valve rod.
The beneficial effects of the utility model: the installation site relation of the wear ring of the black box of pilot valve with O RunddichtringO is adjusted by this utility model, O RunddichtringO is made to be set on wear ring, when O RunddichtringO is by outer force compresses, O RunddichtringO radially extrudes wear ring makes wear ring compress valve rod, it is achieved seal.For the valve rod of minor diameter, the sealing effectiveness that also can obtain.Frictional force is no longer had between O RunddichtringO and valve rod, thus the mode setting up and down relative to O RunddichtringO and wear ring, reduce the frictional force that valve rod is subject to when moving up and down, mobile more flexible.
Accompanying drawing explanation
Fig. 1 is pilot valve structural representation of the prior art；
Fig. 2 is the partial schematic diagram in Fig. 1；
Fig. 3 is the structural representation of pilot valve of the present utility model；
Fig. 4 is the partial schematic diagram in Fig. 3.
Detailed description of the invention
The embodiment of this utility model pilot valve: as shown in Figure 3-4, pilot valve includes valve seat and is positioned at the valve ball 5 of valve seat, spool 4, valve plug 10, valve rod 1.The axis direction of definition valve rod 1 is above-below direction.Valve plug 10 is sealingly fitted on valve seat, and valve plug 10 is positioned at the top of spool 4.Valve rod 1 is the most mobile to be assemblied on valve plug 10, spool 4.It is provided with valve ball seat 6 below valve ball 5, valve ball seat 6 is arranged with back-moving spring 7.State shown in Fig. 1, for oil-in 8 and the disconnected state of oil drain out 9.Valve rod 1 is made up of cylindrical section and conical section, and the top, lower end of the conical section of valve rod 1 is pressed on valve ball 5.
Being arranged with black box on valve rod 1, black box is made up of O RunddichtringO 3 and wear ring 2, and wear ring 2 coordinates with cylindrical section slipper seal along valve rod axis direction of valve rod 1.O RunddichtringO 3 is set on wear ring 2.Being formed with the installation cavity for installing black box between spool 4 and valve plug 10, O RunddichtringO 3 is in compressive state.Between the sidewall of valve plug 10, above-mentioned installation cavity is formed in be provided with circular groove, circular groove and spool 4 towards the side of spool on valve plug 10.The groove depth of circular groove and the consistency of thickness of wear ring 2, the thickness direction of wear ring 2 is consistent with valve rod 1 axis direction, refers to above-below direction.
In the present embodiment, wear ring 2 uses politef, or politef adds copper powder or the composite of other filler composition.So can ensure that the positive sealing between wear ring and valve rod, meanwhile, the frictional force of stem movement can be reduced again.
Pilot valve of the present utility model is after assembling, and O RunddichtringO 3 is in compressive state, and O RunddichtringO 3 radially extrudes wear ring 2 so that wear ring 2 is pressed on valve rod 1, reaches the effect sealed.After being installed to corresponding hydraulic actuating mechanism, operation principle is, when valve rod 1 is by external mechanical force, move down certain distance, the downward compression reseting spring 7 of pushing tow valve ball 5, valve ball 5 no longer blocks up the oil-in of spool, and hydraulic oil just can sequentially pass through oil-in, periphery and the gap of spool 4, the oil discharge passage of spool 4 of valve rod 1 flow to oil drain out 9.Open secondary valve further, it is achieved the oil circuit commutation function of pilot valve.When valve rod 1 moves up, under the effect of back-moving spring 7, oil-in is blocked by valve ball 5.
In other embodiments, the installation cavity of black box also can be formed by the groove being opened on spool.
The embodiment of this utility model chopper hydraulic actuating mechanism, chopper hydraulic actuating mechanism includes pilot valve, and pilot valve is identical with the structure of the pilot valve in above-described embodiment, and its specific embodiment is no longer described in detail in detail.
Claims (10)
1. pilot valve, including valve rod and be set in the black box on described valve rod, black box is by O RunddichtringO and wear ring, it is characterised in that: described wear ring coordinates with valve rod slipper seal along described valve rod axis direction, and described O RunddichtringO is set on described wear ring.
Pilot valve the most according to claim 1, it is characterized in that: described pilot valve also includes valve seat and is positioned at the spool of valve seat, valve plug, described valve rod moves along its axis direction and is assemblied on spool, being formed with the installation cavity for installing described black box between described spool and described valve plug, described O RunddichtringO is in compressive state.
Pilot valve the most according to claim 2, it is characterised in that: in being provided with circular groove towards the side of described spool on described valve plug, between described circular groove and the sidewall towards described valve plug of described spool formed described in installation cavity.
Pilot valve the most according to claim 3, it is characterised in that: the groove depth of described circular groove and the consistency of thickness of described wear ring, the thickness direction of described wear ring is consistent with described valve rod axis direction.
5. according to the pilot valve described in any one of Claims 1-4, it is characterised in that: described valve rod is made up of cylindrical section and conical section, and described wear ring coordinates with the slipper seal along described valve rod axis direction of the cylindrical section of described valve rod.
6. chopper hydraulic actuating mechanism, including pilot valve, pilot valve includes valve rod and is set in the black box on described valve rod, black box is by O RunddichtringO and wear ring, it is characterized in that: described wear ring coordinates with valve rod slipper seal along described valve rod axis direction, and described O RunddichtringO is set on described wear ring.
Chopper hydraulic actuating mechanism the most according to claim 6, it is characterized in that: described pilot valve also includes valve seat and is positioned at the spool of valve seat, valve plug, described valve rod moves along its axis direction and is assemblied on spool, being formed with the installation cavity for installing described black box between described spool and described valve plug, described O RunddichtringO is in compressive state.
Chopper hydraulic actuating mechanism the most according to claim 7, it is characterized in that: in being provided with circular groove towards the side of described spool on described valve plug, between described circular groove and the sidewall towards described valve plug of described spool formed described in installation cavity.
Chopper hydraulic actuating mechanism the most according to claim 8, it is characterised in that: the groove depth of described circular groove and the consistency of thickness of described wear ring, the thickness direction of described wear ring is consistent with described valve rod axis direction.
10. according to the chopper hydraulic actuating mechanism described in any one of claim 6 to 9, it is characterised in that: described valve rod is made up of cylindrical section and conical section, and described wear ring coordinates with the slipper seal along described valve rod axis direction of the cylindrical section of described valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620216383.0U CN205605521U (en) | 2016-03-21 | 2016-03-21 | Circuit breaker hydraulic pressure operating mechanism and pilot valve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620216383.0U CN205605521U (en) | 2016-03-21 | 2016-03-21 | Circuit breaker hydraulic pressure operating mechanism and pilot valve thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205605521U true CN205605521U (en) | 2016-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620216383.0U Active CN205605521U (en) | 2016-03-21 | 2016-03-21 | Circuit breaker hydraulic pressure operating mechanism and pilot valve thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205605521U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017117A (en) * | 2017-05-16 | 2017-08-04 | 无锡市华通气动制造有限公司 | A kind of pneumatic operation system for motor-car vacuum circuit breaker |
| CN107940025A (en) * | 2017-12-19 | 2018-04-20 | 菏泽学院 | A kind of high pressure hand-operated reversal valve with unloading function |
| CN110617353A (en) * | 2018-06-19 | 2019-12-27 | 艾默生过程管理调节技术公司 | Emergency shutdown safety device for dirty service applications |
-
2016
- 2016-03-21 CN CN201620216383.0U patent/CN205605521U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017117A (en) * | 2017-05-16 | 2017-08-04 | 无锡市华通气动制造有限公司 | A kind of pneumatic operation system for motor-car vacuum circuit breaker |
| CN107940025A (en) * | 2017-12-19 | 2018-04-20 | 菏泽学院 | A kind of high pressure hand-operated reversal valve with unloading function |
| CN110617353A (en) * | 2018-06-19 | 2019-12-27 | 艾默生过程管理调节技术公司 | Emergency shutdown safety device for dirty service applications |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |