CN205446919U - System movable valve element - Google Patents
System movable valve element Download PDFInfo
- Publication number
- CN205446919U CN205446919U CN201620175703.2U CN201620175703U CN205446919U CN 205446919 U CN205446919 U CN 205446919U CN 201620175703 U CN201620175703 U CN 201620175703U CN 205446919 U CN205446919 U CN 205446919U
- Authority
- CN
- China
- Prior art keywords
- spool
- valve core
- core case
- sealing ring
- case
- 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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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model discloses a system movable valve element, including the valve core case, be equipped with the case in the valve core case, outside the overlapping of case has the valve barrel, the valve core case is equipped with the spool chamber, the lower extreme of case is equipped with first sealing washer between the outer wall of case and the inner wall of spool chamber in stretching into the spool chamber, is equipped with the second sealing washer between case and the valve barrel, it yearns for the annular ring that the evagination rises to be equipped with the footpath on the outer wall of case, be equipped with the first ring channel of the first sealing washer of holding on the annular ring, the outer wall upper end of case is equipped with the holding the second ring channel of second sealing washer, be equipped with the stop collar between valve barrel and the valve core case, the internal diameter of stop collar is less than the external diameter of annular ring, solves the not good problem of traditional brake valve sealing performance.
Description
[technical field]
This utility model relates to a kind of brake spool.
[background technology]
Brake valve, generally comprise valve core case, spool it is provided with in valve core case, spool is telescopic movable in valve core case, be cased with valve pocket outside spool, increase and support, however now with brake valve between spool with valve core case, valve pocket due to the most relative slip, its sealing property can lack, thus affects the braking ability of brake valve.
[utility model content]
Problem to be solved in the utility model is just to provide a kind of brake spool, solves the problem that traditional braking valve sealing property is the best.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that
A kind of brake spool, including valve core case, spool it is provided with in valve core case, valve pocket it is cased with outside spool, described valve core case is provided with spool chamber, the lower end of described spool is stretched in spool chamber, it is provided with the first sealing ring between outer wall and the inwall of spool chamber of spool, the second sealing ring it is provided with between spool and valve pocket, the outer wall of described spool is provided with annular ring protruding radially outward, annular ring is provided with the first annular groove of accommodating first sealing ring, the outer wall upper end of described spool is provided with the second cannelure of accommodating described second sealing ring, it is provided with stop collar between described valve pocket and valve core case, the internal diameter of stop collar is less than the external diameter of annular ring.
Preferably, described second sealing ring is lip-type packing.
Preferably, on the diapire of described lip-type packing, annular is provided with multiple dowel.
Preferably, the groove width of described second cannelure is 2.5mm ± 0.25mm, and the roughness of groove inwall is Ra1.6.
Preferably, described first sealing ring is O RunddichtringO, the trapezoidal shape of cross sectional shape of described first annular groove, and the sidewall of its both sides tilts relative to diapire.
Preferably, the groove width of described first annular groove is 2.5mm ± 0.25mm, groove depth 1.45mm, roughness Ra 1.6, and the angle of inclination between sidewall and diapire is 2 °.
Preferably, described spool is provided with centre bore, and described valve core case is provided with spring counterbore, is provided with compression spring between described centre bore and spring counterbore.
The beneficial effects of the utility model: the outer wall two ends at spool respectively in this utility model are provided with two sealing rings, one of them sealing ring is located between spool and valve core case, another sealing ring is located between spool and valve pocket, strengthen the sealing between spool and valve core case, valve pocket respectively, the annular ring additionally arranged on spool is the most spacing with stop collar, can be prevented effectively from spool and detach valve core case, reasonable in design, the space availability ratio for brake valve is more preferable.
These features of the present utility model and advantage will be detailed in following detailed description of the invention, accompanying drawing exposure.
[accompanying drawing explanation]
Below in conjunction with the accompanying drawings this utility model is described further:
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the enlarged diagram in Fig. 1 at A；
Fig. 3 is the structural representation of the second sealing ring in this utility model.
[detailed description of the invention]
The technical scheme of this utility model embodiment is explained and illustrated by the accompanying drawing below in conjunction with this utility model embodiment, but following embodiment is only preferred embodiment of the present utility model, and not all.Based on the embodiment in embodiment, those skilled in the art are obtained other embodiments on the premise of not making creative work, broadly fall into protection domain of the present utility model.
nullWith reference to Fig. 1～3，A kind of brake spool 2，Including valve core case 1，Spool 2 it is provided with in valve core case 1，Spool 2 is outside is cased with valve pocket 3，It is described below for convenience，Definition side, valve core case 1 place is lower section，Side, valve pocket 3 place is top，In the present embodiment, the outer wall of valve core case 1 is provided with the 3rd sealing ring 7，The inside of valve core case 1 is provided with spool chamber 11，The lower end of described spool 2 is stretched in spool chamber 11，During work，The lower end of spool 2 in spool chamber 11 on make piston movement，Wherein the bottom surface of spool 2 is upwards provided with centre bore 20，The bottom of described valve core case 1 is provided with spring counterbore 11，It is provided with compression spring between described centre bore 20 and spring counterbore 11，In order to strengthen the sealing property of brake valve，It is provided with the first sealing ring 5 between outer wall and the inwall of spool chamber 11 of spool 2，The second sealing ring 6 it is provided with between spool 2 and valve pocket 3，The outer wall of described spool 2 is provided with annular ring 21 protruding radially outward，Annular ring 21 is provided with the first annular groove 22 of accommodating first sealing ring 5，The outer wall upper end of described spool 2 is provided with the second cannelure 23 of accommodating described second sealing ring 6，It is provided with stop collar 4 between described valve pocket 3 and valve core case 1，Stop collar 4 is enclosed within the outside of spool 2 and is partly embedded in the upper end of valve core case 1，The upper surface of valve core case 1 is provided with the annular groove of accommodating stop collar 4，The internal diameter of stop collar 4 is less than the external diameter of annular ring 21，When spool 2 moves upward，Annular ring 21 offsets with stop collar 4，Avoid spool 2 upwardly away from going out spool chamber 11，In the present embodiment, the outer wall two ends of spool 2 are provided with two sealing rings，One of them sealing ring is located between spool 2 and valve core case 1，Another sealing ring is located between spool 2 and valve pocket 3，Strengthen spool 2 and valve core case 1 respectively、Sealing between valve pocket 3，Thus strengthen the sealing of brake spool 2 on the whole，Add the service life of brake valve.
Preferred as the present embodiment, described second sealing ring 6 is lip-type packing, and lip packing is that type of energizing seals, and fluid pressure is automatically loaded on the lip of lip-type packing, and the fluid pressure sealed increases, it is ensured that sealing effectiveness.The pressure layout relying on its lip during lip-type packing work produces pump and draws effect.By making outer stroke oil film thickness be less than interior stroke oil film thickness, and realize sealing.Spool 2 produces displacement by moving back and forth, and then with the lip friction of lip-type packing, compression, under medium lubricating oil pressure effect, the root of lip-type packing holds spool 2 tightly, lubricating oil also acts as lubrication simultaneously, reduces coefficient of friction, improves the life-span of lip-type packing, in order to increase the intensity of lip-type packing, on the diapire of described lip-type packing, annular is provided with multiple dowel 61.It addition, be optimized dimensionally, the groove width of described second cannelure 23 is 2.5mm ± 0.25mm, and the roughness of groove inwall is Ra1.6.
Preferred as the present embodiment, described first sealing ring 5 is O RunddichtringO, and O RunddichtringO is that a kind of extrusion pressing type seals, rely on sealing member generation elastic deformation, causing contact pressure at sealing contact surface, contact pressure is more than sealed medium pressure, reaches to seal No leakage effect.nullWhen spool 2 does piston movement，Intrinsic pressure enhancing，Close contact by spool 2 with O RunddichtringO、Extruding，Produce pressure，Under the effect of the pressure，O RunddichtringO is subjected to displacement，Shift to low pressure side，O RunddichtringO elastic deformation strengthens simultaneously，Fill and airtight seal clearance，Realize sealing effectiveness，Therefore for O RunddichtringO，The structure of first annular groove 22 is extremely important，The present embodiment is optimized design to first annular groove 22，The trapezoidal shape of cross sectional shape of described first annular groove 22，The sidewall 221 of its both sides tilts relative to diapire 222，Two sidewalls 221 and diapire 222 form a bell mouth shape extended out，O RunddichtringO is filled toward side when being extruded，The contact area of O RunddichtringO and spool chamber 11 inwall can be increased，Concrete size: the groove width of first annular groove 22 is 2.5mm ± 0.25mm，Groove depth 1.45mm，Roughness Ra 1.6，Angle of inclination between sidewall and diapire is 2 °，Angle of inclination can not be the biggest，Easily cause the most greatly poor sealing.
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model is not limited thereto, it is familiar with this those skilled in the art and should be understood that this utility model includes but not limited to accompanying drawing and content described in detailed description of the invention above.Any amendment without departing from function of the present utility model and structural principle is intended to be included in the scope of claims.
Claims (7)
1. a brake spool, including valve core case, spool it is provided with in valve core case, valve pocket it is cased with outside spool, it is characterized in that: described valve core case is provided with spool chamber, the lower end of described spool is stretched in spool chamber, it is provided with the first sealing ring between outer wall and the inwall of spool chamber of spool, the second sealing ring it is provided with between spool and valve pocket, the outer wall of described spool is provided with annular ring protruding radially outward, annular ring is provided with the first annular groove of accommodating first sealing ring, the outer wall upper end of described spool is provided with the second cannelure of accommodating described second sealing ring, it is provided with stop collar between described valve pocket and valve core case, the internal diameter of stop collar is less than the external diameter of annular ring.
2. a kind of brake spool as claimed in claim 1, it is characterised in that: described second sealing ring is lip-type packing.
3. a kind of brake spool as claimed in claim 2, it is characterised in that: on the diapire of described lip-type packing, annular is provided with multiple dowel.
4. a kind of brake spool as claimed in claim 2, it is characterised in that: the groove width of described second cannelure is 2.5mm ± 0.25mm, and the roughness of groove inwall is Ra1.6.
5. a kind of brake spool as claimed in claim 1, it is characterised in that: described first sealing ring is O RunddichtringO, the trapezoidal shape of cross sectional shape of described first annular groove, and the sidewall of its both sides tilts relative to diapire.
6. a kind of brake spool as claimed in claim 5, it is characterised in that: the groove width of described first annular groove is 2.5mm ± 0.25mm, groove depth 1.45mm, roughness Ra 1.6, and the angle of inclination between sidewall and diapire is 2 °.
7. a kind of brake spool as described in one of claim 1～6, it is characterised in that: described spool is provided with centre bore, and described valve core case is provided with spring counterbore, is provided with compression spring between described centre bore and spring counterbore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620175703.2U CN205446919U (en) | 2016-03-08 | 2016-03-08 | System movable valve element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620175703.2U CN205446919U (en) | 2016-03-08 | 2016-03-08 | System movable valve element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205446919U true CN205446919U (en) | 2016-08-10 |
Family
ID=56605957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620175703.2U Expired - Fee Related CN205446919U (en) | 2016-03-08 | 2016-03-08 | System movable valve element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205446919U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106938535A (en) * | 2017-05-09 | 2017-07-11 | 广东东晟密封科技有限公司 | A kind of full-automatic very smooth counting machine and its application method |
-
2016
- 2016-03-08 CN CN201620175703.2U patent/CN205446919U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106938535A (en) * | 2017-05-09 | 2017-07-11 | 广东东晟密封科技有限公司 | A kind of full-automatic very smooth counting machine and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: System movable valve element Effective date of registration: 20171227 Granted publication date: 20160810 Pledgee: Xinchang Zhejiang rural commercial bank Limited by Share Ltd Pledgor: Xinchang Xinchai Machinery Co., Ltd. Registration number: 2017330000333 |
|
| 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: 20160810 Termination date: 20210308 |