CN204153201U - A kind of Cutout cock for rail car - Google Patents
A kind of Cutout cock for rail car Download PDFInfo
- Publication number
- CN204153201U CN204153201U CN201420546775.4U CN201420546775U CN204153201U CN 204153201 U CN204153201 U CN 204153201U CN 201420546775 U CN201420546775 U CN 201420546775U CN 204153201 U CN204153201 U CN 204153201U
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- CN
- China
- Prior art keywords
- valve
- ball
- seal ring
- plug screw
- ring
- 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 provides a kind of Cutout cock for rail car, the valve ball comprise valve body, opening and block for supply air line, compression plug screw, valve rod, locating cover, handle, valve inner and ball valve contact jaw are provided with seal ring, compress by compressing plug screw above seal ring, on seal ring below valve ball and the surface of contact of valve interior surface, respectively increase a rubber o-ring by internal expanding method; Seal ring above valve ball, with on the surface of contact of compression plug screw lower surface, respectively increases a rubber o-ring by internal expanding method.The surface of contact of seal ring and ball valve applies constant power to ball valve to utilize the elasticity of rubber to guarantee, handle is rotated not only light but also seal, the elastic reaction of the rubber o-ring simultaneously on upper-lower seal circle, can also when valve ball and seal ring use wearing and tearing, play the effect of compensatory pressure, extend the working life of valve.
Description
Technical field
The utility model belongs to railway transit passenger car brake unit technical field, the cutout cock especially a kind of railway transit passenger car braking system used.
Background technique
See Fig. 2, the cutout cock of the trolley coach that come into operation in existing market application, its structure comprises valve body, and valve body is hollow structure, and top perforate, puts into the valve ball opened for supply air line and block from top to bottom.Offer on the left of valve body and import and export corresponding intake grill and exhaust outlet with valve ball.Be provided with the valve rod be connected with valve ball on the right side of valve body, between valve rod circumference and valve body, stuffing box packing be set, and compressed by Gland.Located by locating cover outside valve rod, locating cover has the groove that corresponding with the pin on valve body, pin is embedded in groove and locates valve rod.Handle threads rotates through locating cover and is connected with valve rod.Valve inner and ball valve contact jaw are provided with seal ring, and top compresses by compressing plug screw, and the screw mouth contact jaw compressing plug screw and valve body is provided with O RunddichtringO.
In prior art, handle threads rotates through locating cover and is connected with valve rod, easily loosens; The screw mouth contact jaw compressing plug screw and valve body is provided with O RunddichtringO, easily crushes and causes leakage; When cock is installed, require that valve inner and ball valve contact jaw seal with the screw mouth contact jaw compressing plug screw and valve body all simultaneously, because the screw mouth contact jaw compressing plug screw and valve body does not have activity, easily cause each sealing surface by force unbalance, the screw mouth contact jaw compressing plug screw and valve body is caused to seal to compress and do not reveal, but the sealing of valve inner and ball valve contact jaw is not tight, cause revealing gas; Separately, this kind of valve is specialty on train, and mounting point is limited, and handle is short, and moment is little, and seal request wants definitely reliable simultaneously, causes handle to rotate difficulty.
Summary of the invention
The purpose of this utility model is: provide a kind of Cutout cock for rail car, by the structural type of internal expanding method, O RunddichtringO is arranged at valve body upper aperture inward flange, guarantees to compress plug screw sealing, and has certain adjustment surplus up and down; Simultaneously, below the seal ring that valve inner and ball valve contact jaw are arranged, a rubber o-ring is respectively set, the surface of contact of seal ring and ball valve applies constant power to ball valve to utilize the elasticity of rubber to guarantee, handle is rotated not only light but also seal, the elastic reaction of the rubber o-ring simultaneously on upper-lower seal circle, when valve ball and seal ring use wearing and tearing, the effect of compensatory pressure can also be played, extends the working life of valve.
The technical solution of the utility model is: a kind of Cutout cock for rail car, the valve ball comprise valve body, opening and block for supply air line, compression plug screw, valve rod, locating cover, handle, valve inner and ball valve contact jaw are provided with seal ring, compress by compressing plug screw above seal ring, on seal ring below valve ball and the surface of contact of valve interior surface, respectively increase a rubber o-ring by internal expanding method; Seal ring above valve ball, with on the surface of contact of compression plug screw lower surface, respectively increases a rubber o-ring by internal expanding method.
Further, perforate above valve body, compress plug screw screw thread rotation closed opening hole, inside perforate outer end, internal expanding method is provided with O RunddichtringO, sealing compresses gap between plug screw and perforate.
Further, described locating cover and handle are integral type cast structure.
The beneficial effects of the utility model are:
(1) by the structural type of internal expanding method, O RunddichtringO is arranged at valve body upper aperture inward flange, guarantee to compress plug screw sealing, and have certain adjustment surplus up and down, O RunddichtringO rises can not to break in hole (the existing screw mouth contact jaw compressing plug screw and valve body is provided with O RunddichtringO, easily crushes and causes leakage).
(2) below the seal ring arranged at valve inner and ball valve contact jaw, a rubber o-ring is respectively set, the surface of contact of seal ring and ball valve applies constant power to ball valve to utilize the elasticity of rubber to guarantee, handle is rotated not only light but also seal, the elastic reaction of the rubber o-ring simultaneously on upper-lower seal circle, can also when valve ball and seal ring use wearing and tearing, play the effect of compensatory pressure, extend the working life of valve.
(3) locating cover and handle are integral type cast structure, can not loosen (existing handle is threaded welding, easily loosens).
Accompanying drawing explanation
Fig. 1 is the structural representation of Cutout cock for rail car of the present invention;
Fig. 2 is the structural representation of existing Cutout cock for rail car.
In figure, 1 be ball valve, 2 being O-ring seals for compressing plug screw, 3,4 being seal ring, 5 be valve body, 6 be stuffing box packing, 7 be Gland, 8 be locating cover, 9 be valve rod, 10 be handle, 11 for rubber o-ring.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, the cutout cock of a kind of trolley coach application, its structure comprises valve body 5, and valve body 5 is hollow structure, and top perforate, puts into the valve ball 1 opened for supply air line and block from top to bottom.Offer on the left of valve body 5 and import and export corresponding intake grill and exhaust outlet with valve ball.Be provided with the valve rod 9 be connected with valve ball on the right side of valve body 5, between valve rod 9 circumference and valve body 5, stuffing box packing 6 be set, and compressed by Gland 7.Located by locating cover 8 outside valve rod 9, locating cover 8 has the groove that corresponding with the pin on valve body, pin is embedded in groove and locates valve rod.Handle 10 and locating cover 8 are integral type cast structure, can not loosen (existing handle is threaded welding, easily loosens).
Valve body 5 is inner is provided with seal ring 4 with ball valve 1 contact jaw, top compresses by compressing plug screw 2, compress plug screw screw thread rotation closed opening hole, inside perforate outer end, internal expanding method is provided with O RunddichtringO, sealing compresses gap between plug screw and perforate, guarantee to compress plug screw sealing, and have certain adjustment surplus up and down, O RunddichtringO rises and can not to break in hole.
On seal ring below valve ball and the surface of contact of valve interior surface, respectively increase a rubber o-ring 11 by internal expanding method; Seal ring above valve ball, with on the surface of contact of compression plug screw lower surface, also respectively increases a rubber o-ring 11 by internal expanding method.The surface of contact of seal ring and ball valve applies constant power to ball valve to utilize the elasticity of rubber to guarantee, handle is rotated not only light but also seal, the elastic reaction of the rubber o-ring simultaneously on upper-lower seal circle, can also when valve ball and seal ring use wearing and tearing, play the effect of compensatory pressure, extend the working life of valve.
Although the utility model with preferred embodiment disclose as above, so itself and be not used to limit the utility model.The utility model art has knows the knowledgeable usually, not departing from spirit and scope of the present utility model, when doing various change and retouching.Therefore, protection domain of the present utility model, when being as the criterion depending on those as defined in claim.
Claims (3)
1. a Cutout cock for rail car, the valve ball comprise valve body, opening and block for supply air line, compression plug screw, valve rod, locating cover, handle, valve inner and ball valve contact jaw are provided with seal ring, compress by compressing plug screw above seal ring, it is characterized in that: on the seal ring below valve ball and the surface of contact of valve interior surface, respectively increase a rubber o-ring by internal expanding method; Seal ring above valve ball, with on the surface of contact of compression plug screw lower surface, respectively increases a rubber o-ring by internal expanding method.
2. a kind of Cutout cock for rail car according to claim 1, it is characterized in that: perforate above valve body, compress plug screw screw thread rotation closed opening hole, inside perforate outer end, internal expanding method is provided with O RunddichtringO, sealing compresses gap between plug screw and perforate.
3. a kind of Cutout cock for rail car according to claim 1, is characterized in that: described locating cover and handle are integral type cast structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420546775.4U CN204153201U (en) | 2014-09-22 | 2014-09-22 | A kind of Cutout cock for rail car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420546775.4U CN204153201U (en) | 2014-09-22 | 2014-09-22 | A kind of Cutout cock for rail car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204153201U true CN204153201U (en) | 2015-02-11 |
Family
ID=52511317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420546775.4U Expired - Fee Related CN204153201U (en) | 2014-09-22 | 2014-09-22 | A kind of Cutout cock for rail car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204153201U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351534A (en) * | 2015-12-08 | 2016-02-24 | 沈阳真空技术研究所 | Special large-diameter high pressure locking isolating valve for continuous type vacuum furnace |
| CN113432807A (en) * | 2021-06-28 | 2021-09-24 | 飞荣达科技(江苏)有限公司 | Universal internal expansion type sealing inspection joint and inspection method thereof |
-
2014
- 2014-09-22 CN CN201420546775.4U patent/CN204153201U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351534A (en) * | 2015-12-08 | 2016-02-24 | 沈阳真空技术研究所 | Special large-diameter high pressure locking isolating valve for continuous type vacuum furnace |
| CN113432807A (en) * | 2021-06-28 | 2021-09-24 | 飞荣达科技(江苏)有限公司 | Universal internal expansion type sealing inspection joint and inspection method thereof |
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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: 20150211 Termination date: 20190922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |