CN204942691U - A kind of ball valve end cover structure - Google Patents
A kind of ball valve end cover structure Download PDFInfo
- Publication number
- CN204942691U CN204942691U CN201520745364.2U CN201520745364U CN204942691U CN 204942691 U CN204942691 U CN 204942691U CN 201520745364 U CN201520745364 U CN 201520745364U CN 204942691 U CN204942691 U CN 204942691U
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- CN
- China
- Prior art keywords
- valve body
- end cap
- valve
- cover structure
- black box
- 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 kind of ball valve end cover structure, comprise valve body, valve rod, end cap, black box, described valve rod and black box are arranged in valve body, end cap is connected with valve body screw thread, spheroid is provided with in valve body, it is characterized in that described end cap and valve body joint integral type are provided with first step, described valve body is provided with first step to the second step mated.The utility model structure is simple, reasonable in design, by being arranged on the first step on end cap, guarantee that end cap is when stressed, power is transferred to and sends out on body, avoid the displacement of end cap, thus reduce the wearing and tearing of black box, improve sealing effect, separately, the end cap of this kind of vibrational power flow, its assembling is more prone to, and Applicable scope is more extensive.
Description
Technical field
The utility model belongs to ball valve technical field, is specifically related to a kind of ball valve end cover structure be applied on ultra-short globe valve.
Background technique
Ultra-short globe valve, as the one of ball valve, because its compact structure, volume are little, lightweight, to be installed, convenient maintenance, and price is lower than ordinary ball valve.Structure length shortens 70% nearly compared with ordinary ball valve, heat-killed distance is passed when reducing sterilization, remove sterilization dead angle, therefore, this ball valve is widely used in pharmacy and chemical plant installations field, the structure of existing ultra-short ball valve many employings integral type, valve body can adopt casting and forging to process, middle flow design.End cap is connected with valve body by screw thread, and with this press seal circle and spheroid close contact, reaches the effect of sealing.The sealing of valve body and end cap is ensured by compression gasket.After valve installation is on pipeline, due to the pretightening force of valve installation and expanding with heat and contract with cold of pipeline, end cap is caused to produce a certain amount of displacement to spheroid direction from the power on pipeline.Result causes the increase of valve seal specific pressure to be far longer than the specific pressure allowable of seal ring, easily destroys seal ring, and result in the increase of valve operation moment of torsion.Meanwhile, pad, due to excessive compression, loses rebound elasticity, and cause medium to leak from the screw thread between valve body and end cap, sealing effect is not good enough.
Model utility content
For problems of the prior art, the purpose of this utility model is that design provides a kind of ball valve end cover structure.
Described a kind of ball valve end cover structure, comprise valve body, valve rod, end cap, black box, described valve rod and black box are arranged in valve body, end cap is connected with valve body screw thread, spheroid is provided with in valve body, it is characterized in that described end cap and valve body joint integral type are provided with first step, described valve body is provided with the second step matched with first step.
Described a kind of ball valve end cover structure, is characterized in that also being provided with pad between the bottom of described end cap and valve body.
Described a kind of ball valve end cover structure, it is characterized in that described black box comprises the first seal ring and the second seal ring, described first seal ring is arranged between end cap and spheroid, and the second seal ring is arranged between valve body and spheroid.
Described a kind of ball valve end cover structure, is characterized in that on described valve body, socket is provided with dust ring.
The utility model structure is simple, reasonable in design, by being arranged on the first step on end cap, guarantee that end cap is when stressed, power is transferred to and sends out on body, avoid the displacement of end cap, thus reduce the wearing and tearing of black box, improve sealing effect, separately, the end cap of this kind of vibrational power flow, its assembling is more prone to, and Applicable scope is more extensive.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-valve body, 2-valve rod, 3-end cap, 4-spheroid, 5-first step, 6-second step, 7-pad, 8-first seal ring, 9-second seal ring, 10-dust ring.
Embodiment
The utility model is further illustrated below in conjunction with Figure of description.
As shown in Figure 1, a kind of ball valve end cover structure of the utility model, this end cover structure is applied on ultra-short ball valve, comprise valve body 1, valve rod 2, end cap 3, black box, valve rod 2 and black box are arranged in valve body 1, and end cap 3 is threaded with valve body 1, are provided with spheroid 4 in valve body 1, end cap 3 and valve body 1 joint integral type are provided with first step 5, valve body are provided with the second step 6 matched with first step.For reducing wear; play duplicate protection effect; pad 7 is also provided with between the bottom of end cap 3 and valve body 1; the black box playing sealing effect comprises the first seal ring 8 and the second seal ring 9; first seal ring 8 is arranged between end cap 3 and spheroid 4; second seal ring 9 is arranged between valve body 1 and spheroid 4, and be falling into of powder after minimizing dust and wearing and tearing, on valve body 1, socket is provided with dust ring 10.
By turning one step on end cap 3, can effectively prevent end cap 3 displacement and the valve leak that causes, valve body 1 and end cap 3 are screwed, make the first step 5 on end cap 3 and the second step 6 on valve body 1 directly close contact.After valve installation is on pipeline, power all decomposes on valve body 1 by end cap first step 5, and due to first step 5 and valve body 1 close contact, end cap 3 can avoid the displacement to spheroid 4 direction.Like this, both protect seal ring, also ensure that moment of torsion during valve switch.Meanwhile, because end cap first step and valve body closely cooperate, the effect of auxiliary seal can also be played, thus prevent medium from leaking from pad.
Claims (4)
1. a ball valve end cover structure, comprise valve body (1), valve rod (2), end cap (3), black box, described valve rod (2) and black box are arranged in valve body (1), end cap (3) is threaded with valve body (1), spheroid (4) is provided with in valve body (1), it is characterized in that described end cap (3) and valve body (1) joint integral type are provided with first step (5), described valve body (1) is provided with the second step (6) matched with first step (5).
2. a kind of ball valve end cover structure as claimed in claim 1, is characterized in that also being provided with pad (7) between the bottom of described end cap (3) and valve body (1).
3. a kind of ball valve end cover structure as claimed in claim 1, it is characterized in that described black box comprises the first seal ring (8) and the second seal ring (9), described first seal ring (8) is arranged between end cap (3) and spheroid (4), and the second seal ring (9) is arranged between valve body (1) and spheroid (4).
4. a kind of ball valve end cover structure as claimed in claim 1, is characterized in that the upper socket of described valve body (1) is provided with dust ring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745364.2U CN204942691U (en) | 2015-09-24 | 2015-09-24 | A kind of ball valve end cover structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745364.2U CN204942691U (en) | 2015-09-24 | 2015-09-24 | A kind of ball valve end cover structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204942691U true CN204942691U (en) | 2016-01-06 |
Family
ID=55010121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520745364.2U Expired - Fee Related CN204942691U (en) | 2015-09-24 | 2015-09-24 | A kind of ball valve end cover structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204942691U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547990A (en) * | 2018-07-17 | 2018-09-18 | 江苏应流机械制造有限责任公司 | A kind of end cap of forging ball valve |
-
2015
- 2015-09-24 CN CN201520745364.2U patent/CN204942691U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547990A (en) * | 2018-07-17 | 2018-09-18 | 江苏应流机械制造有限责任公司 | A kind of end cap of forging ball valve |
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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: 20160106 Termination date: 20160924 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |