CN203322469U - Gate valve seal structure - Google Patents
Gate valve seal structure Download PDFInfo
- Publication number
- CN203322469U CN203322469U CN2013203127518U CN201320312751U CN203322469U CN 203322469 U CN203322469 U CN 203322469U CN 2013203127518 U CN2013203127518 U CN 2013203127518U CN 201320312751 U CN201320312751 U CN 201320312751U CN 203322469 U CN203322469 U CN 203322469U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve shaft
- shaft
- gate valve
- seal
- 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 relates to a gate valve seal structure comprising a valve block. A bonnet and an end cover are hermetically fitted above the valve block in sequence. A valve shaft is vertically and rotatably fitted inside the valve block. The upper end of the valve shaft is arranged above the end cover. Two seal rings are coaxially sleeved on the valve shaft between the end cover and the valve shaft. An O-shaped seal ring is coaxially sleeved on the valve shaft between the bonnet and the valve shaft. The gate valve seal structure has the advantages that the seal rings which are spaced are coaxially sleeved on the valve shaft between the end cover and the valve shaft, the lower end face of each seal ring is provided with a circular groove, and accordingly medium can be effectively prevented from flowing out of the valve block along the outer edge of the valve shaft and external leakage is prevented; the gate valve seal structure is simple in structure, scientific and reasonable in design and easy to produce; through the two seal rings for secondary protection, the sealing performance of the gate valve is improved effectively.
Description
Technical field
The utility model belongs to valve technology field, relates to a kind of gate valve, specifically, is a kind of sealing configuration of gate valve.
Background technique
The sealability of valve refers to the ability that each sealed department steric hindrance of valve is stopped dielectric leakage, and it is the most important technical performance index of valve.Between traditional gate valve valve shaft and valve gap, by O type circle, seal, but the sealing effect of O type circle is poor, external leakage easily occurs, leaks outside and can cause loss of material, befouling environment, also can cause the accident when serious.For inflammable and explosive, poisonous or the medium of radiation is arranged, leak outside unallowable especially.Therefore, gate valve must have reliable sealability.
The model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of sealing configuration of simple in structure, gate valve that sealing is strong is provided.
Scheme of the present utility model is achieved in that
A kind of sealing configuration of gate valve, comprise valve body, be sealed and installed with successively valve gap and end cap above valve body, vertically be rotatably installed with valve shaft in described valve body, the upper-end part of driving of this valve shaft is in the end cap top, on valve shaft between described valve shaft and end cap, coaxial sleeve is equipped with seal ring, and on the valve shaft between valve shaft and valve gap, coaxial sleeve is equipped with the O RunddichtringO.
And described seal ring is spaced two, the lower end surface of sealing circle is shaped with an annular groove.
Advantage of the present utility model and good effect are:
This sealing configuration is equipped with spaced two seals circle by coaxial sleeve on the valve shaft between valve shaft and end cap, and the annular groove that lid seal ring lower end surface is shaped with can effectively prevent that medium from flowing into the outside of valve body along the valve shaft outer rim, prevented the generation of external leakage.The utility model is simple in structure, design science is reasonable, be easy to realization, has effectively improved the sealability of gate valve as the two seals circle of secondary protection.
The accompanying drawing explanation
Fig. 1 is sectional view of the present utility model;
The I section enlarged view that Fig. 2 is Fig. 1;
The structure sectional view that Fig. 3 is the utility model seal ring.
Embodiment
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail.
A kind of sealing configuration of gate valve, as shown in Figure 1, comprise valve body 4, is sealed and installed with successively valve gap 3 and end cap 2 above valve body, vertically is rotatably installed with valve shaft 1 in described valve body, and the upper-end part of driving of this valve shaft is in the end cap top.
Innovative point of the present utility model is:
As shown in Figure 2, on valve shaft between described valve shaft and end cap, coaxial sleeve is equipped with two spaced seal rings 5, sealing circle micro-elasticity material, its structural drawing as shown in Figure 3, the lower end surface of sealing circle is shaped with an annular groove 7, if medium occurs in this annular groove of external leakage to flow into, it is tightr that the madial wall that the pressure by medium can make seal ring and valve shaft are fitted, beyond can effectively preventing that medium from flowing into valve body along the valve shaft outer rim, guaranteed the sealability of gate valve.
On the valve shaft between valve shaft and valve gap, coaxial sleeve is equipped with O RunddichtringO 6.
The utility model is equipped with the two seals circle of secondary protection sealing on the valve shaft of end caps, effectively prevents the generation of external leakage, good seal performance, and install simple and convenient.
It is emphasized that; embodiment described in the utility model is illustrative; rather than determinate; therefore the utility model comprises and is not limited to the embodiment described in embodiment; every other mode of executions that drawn according to the technical solution of the utility model by those skilled in the art, belong to the scope that the utility model is protected equally.
Claims (2)
1. the sealing configuration of a gate valve, comprise valve body, be sealed and installed with successively valve gap and end cap above valve body, vertically be rotatably installed with valve shaft in described valve body, the upper-end part of driving of this valve shaft is in the end cap top, it is characterized in that: on the valve shaft between described valve shaft and end cap, coaxial sleeve is equipped with seal ring, and on the valve shaft between valve shaft and valve gap, coaxial sleeve is equipped with the O RunddichtringO.
2. the sealing configuration of gate valve according to claim 1, it is characterized in that: described seal ring is spaced two, and the lower end surface of sealing circle is shaped with an annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203127518U CN203322469U (en) | 2013-05-31 | 2013-05-31 | Gate valve seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203127518U CN203322469U (en) | 2013-05-31 | 2013-05-31 | Gate valve seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203322469U true CN203322469U (en) | 2013-12-04 |
Family
ID=49661820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203127518U Expired - Fee Related CN203322469U (en) | 2013-05-31 | 2013-05-31 | Gate valve seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203322469U (en) |
-
2013
- 2013-05-31 CN CN2013203127518U patent/CN203322469U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140531 |