CN202156409U - Sealing mechanism for exhaust brake valve - Google Patents
Sealing mechanism for exhaust brake valve Download PDFInfo
- Publication number
- CN202156409U CN202156409U CN2011202850638U CN201120285063U CN202156409U CN 202156409 U CN202156409 U CN 202156409U CN 2011202850638 U CN2011202850638 U CN 2011202850638U CN 201120285063 U CN201120285063 U CN 201120285063U CN 202156409 U CN202156409 U CN 202156409U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- seat
- leather film
- epithelium
- valve
- 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 a sealing mechanism for an exhaust brake valve. The sealing mechanism consists of a valve rod, a leather film, a leather film seat and a vacuum cavity, wherein a clamp groove is arranged on the valve rod and close to a large head end of the valve rod; a spring seat, the leather film and the leather film seat are sequentially sheathed close to the large head end of the valve rod, the leather film seat is sheathed on the valve rod through a leather film seat sleeve in the middle, protrusions are arranged on the leather film seat sleeve and embedded in the clamp groove arranged on the valve rod, and a sealing ring is arranged between the large head end of the valve rod and the spring seat. The inner diameter of the leather film seat sleeve is in transition fit or clearance fit with the outer diameter of the valve rod. The valve rod is processed into a structure with one end having large diameter, the clamp groove is arranged on the valve rod, the leather film seat sleeve is sheathed at the clamp groove of the valve rod and extruded after the large diameter end of the valve rod and the leather film seat are compressed, so that the leather film seat is fixed on the valve rod, gas can be effectively prevented from leaking from a gap between the valve rod and the leather film, and the sealing property can be ensured.
Description
Technical field
The utility model relates to the energy brake valve arrangement that is used for the automobile auxiliary braking, belongs to the auxiliary brake device for automobile technical field.
Background technology
Exhaust brake valve is the actr of automobile auxiliary braking system.Because the structures of revolving riveting or laser welding are adopted in the sealing between valve rod and the epithelium more in the exhaust brake valve at present; Revolving the riveting existence is difficult to control stressed; Make valve rod because of the stressed excessive crooked phenomenon that produces, the sealing function of the high temperature destructible epithelium that laser welder produces.
Summary of the invention
The utility model technical matters to be solved provides a kind of sealing reliability that can improve exhaust brake valve, avoids because of sealing the sealing mechanism that deficiency makes the exhaust brake valve of energy brake defective valve.
The technical scheme of the utility model is:
A kind of sealing mechanism of exhaust brake valve; Comprise valve rod, epithelium, involucra seat, vacuum chamber, valve rod is provided with draw-in groove, and draw-in groove is near the stub end of valve rod; Stub end place near valve rod on the valve rod is set with spring perch, epithelium, involucra seat successively; Involucra seat is sleeved on the valve rod through the involucra seat cover of centre, and the involucra seat cover is provided with projection and is embedded in the draw-in groove that is provided with on the valve rod, is provided with seal ring between the stub end of valve rod and the spring perch.
The internal diameter of epithelium cover for seat and the external diameter of valve rod are transition fit or free-running fit.
Beneficial effect: the utility model is processed into the big structure of an end diameter with valve rod; And on valve rod, have a draw-in groove; Valve rod is passed spring perch, epithelium and involucra seat through seal ring; Behind big end of compression valve shank diameter and the involucra seat, the valve rod draw-in groove place that is enclosed within of involucra seat is pushed, involucra seat is fixed on the valve rod.Can prevent effectively that like this gas from from the slot leakage between valve rod and the epithelium, guaranteeing its leak tightness.Improved the sealing reliability of exhaust brake valve, avoided making the energy brake defective valve because of sealing deficiency.
Description of drawings
Fig. 1 is the structural representation of the utility model valve rod;
Fig. 2 is the utility model involucra seat structural representation;
Fig. 3 is the sealing mechanism structural representation of the utility model exhaust brake valve.
Among the figure: the stub end of 1-valve rod, 2-valve rod 1, the draw-in groove of 3-valve rod 1,4-involucra seat, 5-epithelium cover for seat, 6-seal ring, 7-spring perch, 8-epithelium, 9-vacuum chamber, 10-projection.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
A kind of sealing mechanism of exhaust brake valve; Comprise valve rod 1, epithelium 8, involucra seat 4, vacuum chamber 9, valve rod 1 is provided with draw-in groove 3, and draw-in groove 3 is near the stub end 2 of valve rod 1; Stub end 3 places near valve rod 1 on the valve rod 1 are set with spring perch 7, epithelium 8, involucra seat 4 successively; Involucra seat 4 is sleeved on the valve rod 1 through the epithelium cover for seat 5 of centre, and epithelium cover for seat 5 is provided with projection 10 and is embedded in the draw-in groove 3 that is provided with on the valve rod 1, is provided with seal ring 6 between the stub end 2 of valve rod 1 and the spring perch 7.
The external diameter of the internal diameter of epithelium cover for seat 5 and valve rod 1 is transition fit or free-running fit.
The structure of valve rod 1 and involucra seat 4 is as depicted in figs. 1 and 2, and the outside dimension A of valve rod 1 and the internal diameter size B of epithelium cover for seat 5 adopt transition or free-running fit; As shown in Figure 3, the stub end 2 of valve rod 1 and the spring perch 7 middle seal rings 6 of putting are in the middle of epithelium 8 is pressed in by spring perch 7 and involucra seat 4; The stub end 2 and involucra seat 4 of compression valve rod 1 are on the draw-in groove 3 of valve rod 1 epithelium cover for seat 5, extruding epithelium cover for seat 5; Make it produce deformation, form projection 10, be pressed in the draw-in groove 3 of valve rod 1; Valve rod 1, seal ring 6, spring perch 7, epithelium 8 and involucra seat 4 are fixed as one; Through the crimp of seal ring 6 and epithelium 8, air can't be got in the vacuum chamber 9 from the circumferential surface of valve rod 1, thereby guaranteed the leak tightness of exhaust brake valve.
Claims (2)
1. the sealing mechanism of an exhaust brake valve; Comprise valve rod (1), epithelium (8), involucra seat (4), vacuum chamber (9); It is characterized in that: said valve rod (1) is provided with draw-in groove (3); Draw-in groove (3) is near the stub end (2) of valve rod (1); Valve rod (1) is gone up and is located to be set with successively spring perch (7), epithelium (8), involucra seat (4) near the stub end (3) of valve rod (1); Involucra seat (4) is sleeved on the valve rod (1) through middle epithelium cover for seat (5), and epithelium cover for seat (5) is provided with projection (10) and is embedded in the last draw-in groove (3) that is provided with of valve rod (1), is provided with seal ring (6) between the stub end (2) of said valve rod (1) and the spring perch (7).
2. the sealing mechanism of exhaust brake valve according to claim 1, it is characterized in that: the external diameter of the internal diameter of said epithelium cover for seat (5) and valve rod (1) is transition fit or free-running fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202850638U CN202156409U (en) | 2011-08-07 | 2011-08-07 | Sealing mechanism for exhaust brake valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202850638U CN202156409U (en) | 2011-08-07 | 2011-08-07 | Sealing mechanism for exhaust brake valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202156409U true CN202156409U (en) | 2012-03-07 |
Family
ID=45764053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202850638U Expired - Fee Related CN202156409U (en) | 2011-08-07 | 2011-08-07 | Sealing mechanism for exhaust brake valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202156409U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297285A (en) * | 2011-08-07 | 2011-12-28 | 无锡隆盛科技有限公司 | Sealing mechanism of exhaust brake valve |
-
2011
- 2011-08-07 CN CN2011202850638U patent/CN202156409U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297285A (en) * | 2011-08-07 | 2011-12-28 | 无锡隆盛科技有限公司 | Sealing mechanism of exhaust brake valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214028 No. 231-3 South City Road, Wang Zhuang Street, New District, Jiangsu, Wuxi Patentee after: Wuxi Longsheng Technology Co., Ltd. Address before: 214028 No. 231-3 South City Road, Wang Zhuang Street, New District, Jiangsu, Wuxi Patentee before: Wuxi Longsheng Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20150807 |
|
| EXPY | Termination of patent right or utility model |