CN201554881U - Valve seat sealing structure - Google Patents
Valve seat sealing structure Download PDFInfo
- Publication number
- CN201554881U CN201554881U CN2009202144774U CN200920214477U CN201554881U CN 201554881 U CN201554881 U CN 201554881U CN 2009202144774 U CN2009202144774 U CN 2009202144774U CN 200920214477 U CN200920214477 U CN 200920214477U CN 201554881 U CN201554881 U CN 201554881U
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- valve
- valve seat
- plate
- sealing structure
- seat
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- Expired - Fee Related
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Abstract
The utility model relates to a valve seat sealing structure, which is arranged on a valve seat, and the valve seat is respectively tightly attached to a valve plate and a valve body through the valve seat sealing structure. The valve seat sealing structure is characterized in that a first sealing surface is respectively arranged in the upper and the lower parts of the valve seat; the valve seat is tightly attached to the valve plate through the first sealing surfaces; a second sealing surface is respectively arranged outside the upper and the lower parts of the valve seat, and the valve seat is tightly attached to the valve body through the second sealing surfaces; a plurality of guiding inclined planes are arranged on the valve seat, and are arranged at the upper end of the first sealing surface at the upper part of the valve seat and the lower end of the first sealing surface at the lower part of the valve seat. Because the guiding inclined planes are arranged on the first sealing surfaces of the valve seat, the valve plate can be quickly and accurately mounted between the valve seats; the positive pressure of the valve seat on the valve plate is reduced by arranging the guiding inclined planes, therefore the rotation moment for opening and closing a valve is reduced to facilitate propulsion of the valve plate; and internal pressure separates the valve seat from the valve plate by bumping the guiding inclined planes, so as to perform the function of discharging internal pressure.
Description
Technical field
The utility model relates to a kind of sealing configuration, the sealing configuration of the used valve seat of particularly a kind of high-pressure large-caliber valve.
Background technique
In the prior art, valve seat is arranged in the valve body as a constituent element of valve, by fitting tightly of valve seat and valve plate, plays the flowing medium that blocks in the pipeline, the purpose of throttle down.Because valve plate is to be folded between two valve seats, when mounted, be difficult to aim at the position that two valve base chambers are reserved rapidly and accurately with the fixedly connected valve plate of valve rod, influenced the efficient that valve is installed.Because valve plate and MEDIA FLOW are to perpendicular, the position that valve plate is connected with valve base sealing is directly washed away by medium, and damage is easily arranged, thereby influences the sealability and the working life of valve plate, valve seat.On the other hand, when opening/shutting valve, rotation hand wheel drives valve rod and valve plate, makes valve plate do elevating movement along valve seat; Because valve seat and valve plate fit tightly, valve seat has very big positive pressure to valve plate, makes rotation hand wheel need very big driving force, has influenced the efficient of execute-in-place switching gate valve.After valve was closed fully, internal pressure residual between valve seat and valve body can't be released, and made the valve of prior art can't be applicable to the working environment of medium high pressure.
The model utility content
The purpose of this utility model is to provide a kind of valve base sealing structure, valve plate can be installed between the valve seat rapidly and accurately, the driving force of rotation hand wheel when reducing opening/shutting valve; The residual internal pressure of when valve closing, can releasing.
In order to achieve the above object, the technical solution of the utility model provides a kind of valve base sealing structure, and it is arranged on the valve seat, and valve seat fits tightly with valve plate, valve body respectively by this valve base sealing structure, it is characterized in that the inboard of above-mentioned valve seat upper and lower part is equipped with primary sealing area; Above-mentioned valve seat fits tightly by primary sealing area and valve plate; The outside of above-mentioned valve seat upper and lower part also is provided with secondary sealing area, and valve seat fits tightly by secondary sealing area and valve body; Above-mentioned valve seat is provided with some guiding surfaces; Above-mentioned guiding surface is arranged on the primary sealing area upper end on valve seat top, the primary sealing area lower end of valve seat bottom.
The angle of above-mentioned guiding surface and valve plate is 10 ° to 15 °.
Above-mentioned secondary sealing area is provided with some seal grooves, is embedded with Sealing in the above-mentioned seal groove.
Valve base sealing structure described in the utility model compared with prior art, its advantage is: the utility model can be installed between the valve seat valve plate owing to be provided with guiding surface at the primary sealing area of valve seat rapidly and accurately; Guiding surface also makes valve seat that the positive pressure of valve plate is reduced, and the running torque of handwheel makes things convenient for the propelling of valve plate when therefore having reduced opening/shutting valve; Internal pressure is separated valve seat by the guiding surface of rushing to summit with valve plate, play the effect of the internal pressure of releasing;
The utility model by Sealing is set therein, has improved the sealability between valve seat and the valve body owing to the secondary sealing area at valve seat is provided with seal groove.
Description of drawings
Fig. 1 is the sectional drawing of valve base sealing structure described in the utility model;
Fig. 2 is the structural representation of valve base sealing structure described in the utility model when valve opening state;
Fig. 3 is the structural representation of valve base sealing structure described in the utility model when the valve closes state.
Embodiment
Embodiment below in conjunction with description of drawings the utility model valve base sealing structure.
Please cooperate referring to Fig. 1 and shown in Figure 3, valve seat 10 is arranged in the valve body 50, and valve plate 20 is folded between two valve seats 10, and the right half part of one of them valve seat 10 and valve plate 20 only is shown in the accompanying drawing.The utility model valve base sealing structure is arranged on the upper and lower part of each valve seat 10, comprises the primary sealing area 11 that is arranged on valve seat 10 inboards, the secondary sealing area 14 that is arranged on valve seat 10 outsides.
Please cooperate referring to Fig. 2 and shown in Figure 3, during valve opening and closing, rotation hand wheel drives valve rod 30 and valve plate 20, makes valve plate 20 do elevating movement along valve seat 10.The setting of guiding surface 12 reduces the valve seat 10 and the area of contact of valve plate 20, and the positive pressure of 10 pairs of valve plates 20 of valve seat is reduced, and the running torque of handwheel makes things convenient for the propelling of valve plate 20 when therefore having reduced opening/shutting valve.
After valve was closed fully, internal pressure residual between valve seat 10 and the valve body 50 was separated valve seat 10 by the guiding surface 12 of rushing to summit with valve plate 20, play the effect of the internal pressure of releasing.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be conspicuous.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (3)
1. valve base sealing structure, it is arranged on the valve seat (10), valve seat (10) fits tightly with valve plate (20), valve body (50) respectively by this valve base sealing structure, it is characterized in that, the inboard of described valve seat (10) upper and lower part is equipped with primary sealing area (11); Described valve seat (10) fits tightly by primary sealing area (11) and valve plate (20);
The outside of described valve seat (10) upper and lower part also is provided with secondary sealing area (14), and valve seat (10) fits tightly by secondary sealing area (14) and valve body (50);
Described valve seat (10) is provided with some guiding surfaces (12); Described guiding surface (12) is arranged on primary sealing area (11) upper end on valve seat (10) top, primary sealing area (11) lower end of valve seat bottom.
2. valve base sealing structure as claimed in claim 1 is characterized in that, described guiding surface (12) is 10 ° to 15 ° with the angle of valve plate (20).
3. valve base sealing structure as claimed in claim 1 is characterized in that, described secondary sealing area (14) is provided with some seal grooves (13), is embedded with Sealing (40) in the described seal groove (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202144774U CN201554881U (en) | 2009-11-30 | 2009-11-30 | Valve seat sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202144774U CN201554881U (en) | 2009-11-30 | 2009-11-30 | Valve seat sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201554881U true CN201554881U (en) | 2010-08-18 |
Family
ID=42614563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202144774U Expired - Fee Related CN201554881U (en) | 2009-11-30 | 2009-11-30 | Valve seat sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201554881U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094987A (en) * | 2010-12-21 | 2011-06-15 | 上海神开石油化工装备股份有限公司 | Ultrahigh pressure flat plate gate valve |
| CN108679296A (en) * | 2018-07-13 | 2018-10-19 | 纽威石油设备（苏州）有限公司 | A kind of all-metal valve rod sealing mechanism and flat gate valve |
| CN109707852A (en) * | 2017-10-26 | 2019-05-03 | 浙江三花制冷集团有限公司 | A kind of solenoid valve |
-
2009
- 2009-11-30 CN CN2009202144774U patent/CN201554881U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094987A (en) * | 2010-12-21 | 2011-06-15 | 上海神开石油化工装备股份有限公司 | Ultrahigh pressure flat plate gate valve |
| CN109707852A (en) * | 2017-10-26 | 2019-05-03 | 浙江三花制冷集团有限公司 | A kind of solenoid valve |
| CN108679296A (en) * | 2018-07-13 | 2018-10-19 | 纽威石油设备（苏州）有限公司 | A kind of all-metal valve rod sealing mechanism and flat gate 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: 20100818 Termination date: 20181130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |