CN2505655Y - Wedge automatic levelling oil seal gate valve - Google Patents
Wedge automatic levelling oil seal gate valve Download PDFInfo
- Publication number
- CN2505655Y CN2505655Y CN 01247398 CN01247398U CN2505655Y CN 2505655 Y CN2505655 Y CN 2505655Y CN 01247398 CN01247398 CN 01247398 CN 01247398 U CN01247398 U CN 01247398U CN 2505655 Y CN2505655 Y CN 2505655Y
- Authority
- CN
- China
- Prior art keywords
- valve
- oil seal
- flashboard
- gate valve
- utility
- 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 wedge automatic leveling oil seal gate valve, in particular to a gate valve for a gas conveying pipe. The utility model having the advantages of simple structure, convenient manufacture and maintenance, small switching moment and good sealing performance is put forward for solving the problems of big moment, imprecise seal, low working pressure, etc. of a prior gate valve. The technical proposal of the utility model is that: a convex flashboard (4) and a concave flashboard (8) are arranged on a middle wedge hole of a valve seat (7); and automatic pressure oil sealing mechanisms are arranged on the valve seat (7) and the central cavity wall near a valve body (6). The utility model is widely used in the gas conveying pipe.
Description
One, technical field
The gate valve that the utility model relates to a kind of conveying gas pipeline is the automatic leveling oil seal of wedge-type gate valve particularly.
Two, background technique
Need by the what operation at the conveying gas pipeline, often use the usefulness of gate valve as keying.In the patent disclosure of number of patent application 90211719.X " a kind of differential pressure oil seal elasticity gate valve ", it is big to exist difficulty of processing, cost height, deficiency such as moment is big; In the patent disclosure of number of patent application 92214821.X " the automatic leveling double gate valve of a kind of wedge-type ", adopt hard sealing structure when high pressure, to open deficiencys such as easy leakage.
Three, summary of the invention
The purpose of this utility model provides a kind of simple in structure, has overcome traditional Gate-valve sealing imprecision, the shortcoming that working pressure is low, and switch moment is little, the automatic leveling oil seal of the wedge-type of good seal performance gate valve.
The technological scheme that the purpose of this utility model adopted is, by bonnet nut, valve rod, valve gap, convex surface flashboard, seal gease compensation pressing mechanism, valve body, valve seat, concave surface flashboard, device has convex surface flashboard and concave surface flashboard in dynamic pressure oil seal mechanism, filler, filler gland, handwheel are formed its valve seat intermediate wedge hole, be equipped with from the dynamic pressure oil seal mechanism at the top and lumen wall place of leaning on valve body of valve seat.
The utility model working principle, when throttle down, before flashboard final plant closure valve, along with the rotation of valve rod moves down, the valve rod head produces pressure to protruding, recessed two flashboards, makes protruding, recessed flashboard when moving down, because the radius R 1 of convex surface flashboard is less than the radius R 2 of concave surface flashboard, protruding, recessed flashboard relatively rotates automatically to left and right valve seat simultaneously and develops, and reaches self-packing purpose from face.Simultaneously, because valve closing, be full of pressure medium in the valve body lumen, form pressure difference with the downstream (outlet side) of valve, thereby promoting (left and right) piston in dynamic pressure oil seal lubricating structure moves downward, compress in-oil cylinder seal gease in the automatic oil seal lubricating structure one-tenth, make seal gease enter sealing surface of seat and form the sealing oil film, realize the hard back oil seal reliably that seals by the valve seat road; In the upstream of valve (inlet end), valve seat has suitable axial internal clearance, because the promotion of inlet end pressure is developed from trend convex surface flashboard, reaches self-sealing purpose.When seal gease needs compensation because of consumption, can make seal gease by the oilhole on the valve body by the gland on the outside left and right seal gease compensation of the rotary valve pressing mechanism, enter and realize sealing on the sealing surface of seat.
The utility model compared with prior art has simple and compact for structurely, makes easy to maintenancely, and switch moment is little, operate light, characteristics such as good seal performance does not have and leaks, and compensates processing, alignment error and the mild wear of valve seat and flashboard automatically, and the life-span is long.Be widely used in the conveying gas pipeline.
Four, description of drawings
Further specify the utility model below in conjunction with accompanying drawing.
Accompanying drawing is the utility model sectional structure intention.
Among the figure: 1-bonnet nut 2-valve rod 3-valve gap 4-convex surface flashboard 5-seal gease Lian pressing mechanism 6-valve body 7-valve seat 8-concave surface flashboard 9-is from dynamic pressure oil seal mechanism 10-filler 11-filler gland 12-handwheel
Five, embodiment
As shown in drawings, valve rod 2 is arranged in the valve gap 3, handwheel 12 is equipped with in valve rod 2 upper ends, the centre is with filler 10 and filler gland 11, convex surface flashboard 4 and concave surface flashboard 8 are equipped with in the lower end, valve body 6 is equipped with in valve gap 3 lower end surfaces, valve body 6 is outer have seal gease compensation pressing mechanism 5, in valve seat 7 is arranged, valve seat 7 mesopores have convex surface flashboard 4 and concave surface flashboard 8, valve seat 7 has from dynamic pressure oil seal mechanism 9 with valve body 6 connecting parts.
Claims (1)
1, the automatic leveling oil seal of a kind of wedge-type gate valve, compensate pressing mechanism (5), valve body (6), valve seat (7), concave surface flashboard (8), form by bonnet nut (1), valve rod (2), valve gap (3), convex surface flashboard (4), seal gease from dynamic pressure oil seal mechanism (9), filler (10), filler gland (11), handwheel (12), it is characterized in that device has convex surface flashboard (4) and concave surface flashboard (8) in valve seat (7) the intermediate wedge hole, be equipped with from dynamic pressure oil seal mechanism (9) at the top and lumen wall place by valve body (6) of valve seat (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01247398 CN2505655Y (en) | 2001-08-23 | 2001-08-23 | Wedge automatic levelling oil seal gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01247398 CN2505655Y (en) | 2001-08-23 | 2001-08-23 | Wedge automatic levelling oil seal gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2505655Y true CN2505655Y (en) | 2002-08-14 |
Family
ID=33658265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01247398 Expired - Fee Related CN2505655Y (en) | 2001-08-23 | 2001-08-23 | Wedge automatic levelling oil seal gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2505655Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439085A (en) * | 2016-10-17 | 2017-02-22 | 温州太科阀门科技有限公司 | Valve oil film sealing structure and valve with oil film sealing structure |
| CN107701747A (en) * | 2017-11-21 | 2018-02-16 | 盐城市大丰奥凯流体机械有限公司 | Gate valve structure and fluid cut-off device |
| CN113431906A (en) * | 2021-08-26 | 2021-09-24 | 启东市永安阀门有限公司 | Valve easy to assemble |
-
2001
- 2001-08-23 CN CN 01247398 patent/CN2505655Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439085A (en) * | 2016-10-17 | 2017-02-22 | 温州太科阀门科技有限公司 | Valve oil film sealing structure and valve with oil film sealing structure |
| CN107701747A (en) * | 2017-11-21 | 2018-02-16 | 盐城市大丰奥凯流体机械有限公司 | Gate valve structure and fluid cut-off device |
| CN113431906A (en) * | 2021-08-26 | 2021-09-24 | 启东市永安阀门有限公司 | Valve easy to assemble |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |