CN203146883U - Valve seat structure - Google Patents
Valve seat structure Download PDFInfo
- Publication number
- CN203146883U CN203146883U CN 201320020986 CN201320020986U CN203146883U CN 203146883 U CN203146883 U CN 203146883U CN 201320020986 CN201320020986 CN 201320020986 CN 201320020986 U CN201320020986 U CN 201320020986U CN 203146883 U CN203146883 U CN 203146883U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- hole
- groove
- valve
- center line
- 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 belongs to the field of valves, and particularly relates to a valve seat structure. A through hole is reserved on a valve along the axial direction thereof. A groove is arranged on the end face of one side of a valve seat and positioned on the periphery of the through hole. Multiple groups of pressure balancing holes for constantly maintaining pressure balance between the inside and the outside of the groove are arranged on the valve seat and uniformly distributed along the circumferential direction of the outer surface of the valve seat; one end of each pressure balancing hole is communicated with the groove while the other end thereof extends to the outer surface of the valve seat and is communicated with the outside; a center line of each pressure balancing hole is perpendicular to that of the through hole; and a center line of the groove is collinear with that of the through hole. The pressure balancing holes for constantly maintaining pressure balance between the inside and the outside of the groove of the valve seat are arranged on the valve seat, so that jumping out and damage of an O-type rubber seal ring at the moment when the valve is opened are avoided thoroughly, and leakage of the valve and jamming due to the fact that the valve cannot be opened and closed normally are avoided.
Description
Technical field
The utility model belongs to valve field, specifically a kind of valve seat construction that can be applicable to pipeline tapping (shutoff) special valve.
Background technique
At present, be pipeline tapping (shutoff) special valve of replaceable O type rubber seal sealing for not dismantling, generally take O type rubber seal is sealed in design proposal in the valve seat end face groove; As shown in Figure 1, the centre of valve seat 3 axially has through hole 7 along it, and on a side end face of valve seat 3, to be positioned at the outer periphery of through hole 7 fluted 6, O type rubber seal 1 namely is installed in this groove 6.This design is when the moment of valve opening, and the pressure in valve seat 3 upper grooves 6 can not be released effectively, has certain pressure in the groove 6; Under the effect of this pressure, the O type rubber seal 1 that seals is easy to damage by jumping out in the groove 6, makes valve produce seepage, even normally open and close of valve, stuck phenomenon occurs.
The model utility content
The purpose of this utility model is to provide a kind of valve seat construction, make in the valve seat groove and remain pressure balance with the outside, has thoroughly solved O type rubber seal and has gone out and damage phenomenon in the spring of valve opening moment.
The purpose of this utility model is achieved through the following technical solutions:
The utility model axially has through hole along valve seat, in valve seat one side end face, the outer periphery that is positioned at described through hole is fluted; Described valve seat is provided with to make in the described groove and remains pressure balanced pressure compensation opening with the outside.
Wherein: an end of described pressure compensation opening is communicated with groove, and the other end is opened to the outer surface of valve seat and external communications; Two of described pressure compensation openings are one group, circumferentially are evenly equipped with many groups along the valve seat outer surface; The center line of described pressure compensation opening and the center line of described through hole are perpendicular; The center line of described groove and the centerline collineation of described through hole.
Advantage of the present utility model and good effect are:
1. the utility model remains pressure balanced pressure compensation opening with the outside in valve seat being provided with makes the valve seat groove, thoroughly solved the spring in valve opening moment of O type rubber seal and gone out, damaged phenomenon, the stuck phenomenon of avoiding valve to produce seepage and can not normal switch occur because of valve.
2. the utility model is simple in structure, and usability is reliable, can prolong the working life of valve.
Description of drawings
Fig. 1 is the structural representation of existing valve seat;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the structural representation that has the pipeline tapping special valve of the utility model valve seat;
Fig. 4 is the partial enlarged drawing at A place among Fig. 3;
Wherein: 1 is the O RunddichtringO, and 2 is flashboard, and 3 is valve seat, and 4 is valve body, and 5 is pressure compensation opening, and 6 is groove, and 7 is through hole.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 2, valve seat 3 of the present utility model axially has through hole 7 along it, in the side end face that valve seat 3 and flashboard 2 are tightly connected, the outer periphery fluted 6 that is positioned at described through hole 7; Open the rapid variation of instantaneous pressures and make O type rubber seal 1 in valve seat 3 upper grooves 6 by jumping out, damage in the groove 6 for fear of flashboard 2, be provided with to make in the described groove 6 with the outside at valve seat 3 and remain pressure balanced pressure compensation opening 5, thoroughly solved O type rubber seal and gone out and damage phenomenon in the spring of valve opening moment.5 two of pressure compensation openings are one group, circumferentially are evenly equipped with many groups along valve seat 3 outer surfaces; One end of each pressure compensation opening 5 is communicated with groove 6, and the other end is opened to the outer surface of valve seat 3 and external communications, and the center line of each pressure compensation opening 5 is all perpendicular with the center line of described through hole 7; The centerline collineation of the center line of described groove 6 and described through hole 7, namely also perpendicular to the center line of groove 6, the center line of each pressure compensation opening 5 is all parallel with horizontal plane for the center line of each pressure compensation opening 5.
As shown in Figure 3, Figure 4, the valve that has the utility model valve seat comprises valve body 4, valve seat 3 and is installed in flashboard 2 in the valve body 4, wherein the both sides of flashboard 2 are equipped with valve seat 3, and the both sides of flashboard 2 all are tightly connected with two valve seats 3, and the distortion by O type rubber seal 1 reaches sealing effect.When flashboard 2 is opened moment, because pressure and outside in the groove 6 remain balance, O type rubber seal 1 just can not be by jumping out, damage in the groove 6.
Claims (5)
1. a valve seat construction axially has through hole along valve seat, in valve seat one side end face, the outer periphery that is positioned at described through hole is fluted; It is characterized in that: described valve seat (3) is provided with to make in the described groove (6) and remains pressure balanced pressure compensation opening (5) with the outside.
2. by the described valve seat construction of claim 1, it is characterized in that: an end of described pressure compensation opening (5) is communicated with groove (6), and the other end is opened to outer surface and the external communications of valve seat (3).
3. by claim 1 or 2 described valve seat constructions, it is characterized in that: (5) two of described pressure compensation openings are one group, circumferentially are evenly equipped with many groups along valve seat (3) outer surface.
4. by claim 1 or 2 described valve seat constructions, it is characterized in that: the center line of the center line of described pressure compensation opening (5) and described through hole (7) is perpendicular.
5. by claim 1 or 2 described valve seat constructions, it is characterized in that: the centerline collineation of the center line of described groove (6) and described through hole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320020986 CN203146883U (en) | 2013-01-15 | 2013-01-15 | Valve seat structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320020986 CN203146883U (en) | 2013-01-15 | 2013-01-15 | Valve seat structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146883U true CN203146883U (en) | 2013-08-21 |
Family
ID=48974407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320020986 Expired - Fee Related CN203146883U (en) | 2013-01-15 | 2013-01-15 | Valve seat structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146883U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672015A (en) * | 2013-11-30 | 2014-03-26 | 无锡智能自控工程股份有限公司 | Balanced metal valve seat sealing structure for high-temperature high-pressure regulating ball valve |
| CN105134990A (en) * | 2015-08-31 | 2015-12-09 | 合肥通用机械研究院 | High-pressure flat gate valve valve-seat support ring meeting full-differential-pressure opening requirements |
-
2013
- 2013-01-15 CN CN 201320020986 patent/CN203146883U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672015A (en) * | 2013-11-30 | 2014-03-26 | 无锡智能自控工程股份有限公司 | Balanced metal valve seat sealing structure for high-temperature high-pressure regulating ball valve |
| CN105134990A (en) * | 2015-08-31 | 2015-12-09 | 合肥通用机械研究院 | High-pressure flat gate valve valve-seat support ring meeting full-differential-pressure opening requirements |
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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: 20130821 Termination date: 20220115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |