CN204127301U - Gas control lock valve - Google Patents
Gas control lock valve Download PDFInfo
- Publication number
- CN204127301U CN204127301U CN201420527797.6U CN201420527797U CN204127301U CN 204127301 U CN204127301 U CN 204127301U CN 201420527797 U CN201420527797 U CN 201420527797U CN 204127301 U CN204127301 U CN 204127301U
- Authority
- CN
- China
- Prior art keywords
- spool
- piston head
- circle
- lip
- face
- 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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Abstract
The utility model discloses gas control lock valve, it is characterized in that: comprise valve body, spool and air inlet end cap, valve body is provided with cross-drilled hole and moves left and right wherein by spool, the left end of spool is piston head, the left end of cross-drilled hole is piston cavity, piston head activity is located in piston cavity, motive sealing is carried out by black box between piston head and piston cavity, black box is located in the circular groove that piston head cylindrical offers, described air inlet end cap is fixed on the left end of valve body, and inlet end is covered with inlet hole just to the left end face of piston head; Described black box is made up of integrated lip circle and O type circle, lip circle is positioned at left side, O type circle is positioned at right side, the its right end face of O type circle is designed to straight end face and sets out lip recess on straight end face, and the endoporus of lip circle and O type circle connects and forms the little cambered surface in aperture, median pore radius large two.When great advantage of the present utility model is spool action, the movement of its piston head in piston cavity can seal very well to gas-liquid, and structure is simple.
Description
Technical field
The utility model relates to a kind of for the gas control lock valve in heavy-duty automotive speed changer mechanism.
Background technique
Current heavy-duty automotive speed changer is when scope gear switches, if main tank is on gear, easily damages secondary box of gearbox synchronizer, therefore need a kind of lockable mechanism, switch scope gear when not allowing main tank on gear, at this moment just use a kind of valve products being gas control lock valve.During the work of gas control lock valve, the promotion of its spool passes into pressed gas by suction port and has come, at this moment the movement of the piston head of spool in piston cavity need seal gas, in the fluid preventing gas from entering in valve body, and the return of spool is promoted by spring force, at this moment the movement of the piston head of spool in piston cavity needs to seal fluid, prevents the fluid in valve body from leaking outside from suction port.So, gas control lock valve operationally, both needed when the piston head of spool moves in piston cavity to seal gas, need again to seal fluid, and also do not have a kind of product reliably can meet above-mentioned seal request very well at present, if will meet above-mentioned seal request preferably, the structure of valve can seem more complicated.
Summary of the invention
In view of the deficiency of background technique, when technical problem to be solved in the utility model is to provide a kind of spool action, the movement of its piston head in piston cavity can seal very well to gas-liquid, and the simple gas control lock valve of structure.
For this reason, the technological scheme that the utility model provides is:
Gas control lock valve, it is characterized in that: comprise valve body, spool and air inlet end cap, valve body is provided with cross-drilled hole and moves left and right wherein by spool, the left end of spool is piston head, the left end of cross-drilled hole is piston cavity, piston head activity is located in piston cavity, motive sealing is carried out by black box between piston head and piston cavity, black box is located in the circular groove that described piston head cylindrical offers, the right-hand member of described spool is provided with spring and is pushed away on a spool left side, described air inlet end cap is fixed on the left end of valve body, and inlet end is covered with inlet hole just to the left end face of piston head; Described black box is made up of integrated lip circle and O type circle, lip circle is positioned at left side, O type circle is positioned at right side, the its right end face of O type circle is designed to straight end face and sets out lip recess on straight end face, and the endoporus of lip circle and O type circle connects and forms the little cambered surface in aperture, median pore radius large two.
In technique scheme, its key is the black box that have employed a kind of unique design, sealing assembly is made up of integrated lip circle and O type circle, lip circle is positioned at pressed gas side, the lip of lip circle is towards pressed gas suction port end, lip circle is for the sealing to gas during pressed gas promotion spool action, and O type circle is positioned at valve body inner fluid side, O type circle is for the sealing to valve body inner fluid during spring force promotion spool return, and as you know, lip circle is applicable to the sealing to gas, and O type circle is applicable to the sealing to fluid, therefore combine the movement of its piston head in piston cavity when making spool action both can seal very well gas-liquid, and structurally just design is optimized to black box, so structure is also very simple.Also have, the design of O type circle is straight end face and straight end face set out the design of lip recess, can be more conducive to the sealing to fluid, the design of black box endoporus cambered surface simultaneously also improves the elastic deformability of Sealing, is also conducive to the sealability improving black box.
As preferably, the outer lip back side of described lip circle is provided with wave tooth.The design of wave tooth can improve the intensity of lip circle outer lip, but the less deformability affecting lip circle outer lip, thus improve the sealability of lip circle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of black box.
Embodiment
As shown in the figure, gas control lock valve of the present utility model, comprise valve body 8, spool 6 and air inlet end cap 2, valve body 8 is provided with cross-drilled hole and moves left and right wherein by spool 6, the left end of spool 6 is piston head 3, the left end of cross-drilled hole is piston cavity 5, piston head 3 activity is located in piston cavity 5, motive sealing is carried out by black box 4 between piston head 3 and piston cavity 5, black box 4 is located in the circular groove that described piston head 3 cylindrical offers, the right-hand member of described spool 6 is provided with spring 7 and is pushed away on spool 6 left side, described air inlet end cap 2 is fixed on the left end of valve body 8, air inlet end cap 2 is provided with inlet hole 1 just to the left end face of piston head 3, described black box 4 is made up of integrated lip circle 41 and O type circle 42, lip circle 41 is positioned at left side, O type circle 42 is positioned at right side, the its right end face of O type circle 42 is designed to straight end face and sets out lip recess 43 on straight end face, the endoporus of lip circle 41 and O type circle 42 connects and forms the little cambered surface 44 in aperture, median pore radius large two, and the outer lip back side of described lip circle 41 is provided with wave tooth 45.
During above-mentioned gas control lock valve work, inlet hole passes into pressed gas and promotes spool action to the right, at this moment lip circle seals pressed gas, in the fluid preventing gas from entering in valve body, and when pressed gas disappears, spool is return under the promotion of spring, and at this moment O type circle seals fluid, prevents the fluid in valve body from refluxing and leaks outside from suction port.Thus, when great advantage of the present utility model is spool action, the movement of its piston head in piston cavity can seal very well to gas-liquid, and structure is simple.
Claims (2)
1. gas control lock valve, it is characterized in that: comprise valve body, spool and air inlet end cap, valve body is provided with cross-drilled hole and moves left and right wherein by spool, the left end of spool is piston head, the left end of cross-drilled hole is piston cavity, piston head activity is located in piston cavity, motive sealing is carried out by black box between piston head and piston cavity, black box is located in the circular groove that described piston head cylindrical offers, the right-hand member of described spool is provided with spring and is pushed away on a spool left side, described air inlet end cap is fixed on the left end of valve body, and inlet end is covered with inlet hole just to the left end face of piston head; Described black box is made up of integrated lip circle and O type circle, lip circle is positioned at left side, O type circle is positioned at right side, the its right end face of O type circle is designed to straight end face and sets out lip recess on straight end face, and the endoporus of lip circle and O type circle connects and forms the little cambered surface in aperture, median pore radius large two.
2. gas control lock valve according to claim 1, is characterized in that: the outer lip back side of described lip circle is provided with wave tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420527797.6U CN204127301U (en) | 2014-09-15 | 2014-09-15 | Gas control lock valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420527797.6U CN204127301U (en) | 2014-09-15 | 2014-09-15 | Gas control lock valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204127301U true CN204127301U (en) | 2015-01-28 |
Family
ID=52383659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420527797.6U Expired - Fee Related CN204127301U (en) | 2014-09-15 | 2014-09-15 | Gas control lock valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204127301U (en) |
-
2014
- 2014-09-15 CN CN201420527797.6U patent/CN204127301U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20150128 Termination date: 20150915 |
|
| EXPY | Termination of patent right or utility model |