CN2216175Y - pressure oil seal flat gate valve - Google Patents
pressure oil seal flat gate valve Download PDFInfo
- Publication number
- CN2216175Y CN2216175Y CN 95242613 CN95242613U CN2216175Y CN 2216175 Y CN2216175 Y CN 2216175Y CN 95242613 CN95242613 CN 95242613 CN 95242613 U CN95242613 U CN 95242613U CN 2216175 Y CN2216175 Y CN 2216175Y
- Authority
- CN
- China
- Prior art keywords
- valve
- flashboard
- pressure oil
- valve seat
- valve body
- 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 provides a pressure oil seal flat plate gate valve which comprises a valve body, a valve seat matched with the valve body, a gate plate arranged in the valve body, a lifting mechanism and a valve rod connected with the gate plate and a sealing component, wherein, the lower part of the valve seat is prolonged to form a cover plate, the length and shape of which are consistent with the gate plate. The utility model has the advantages of simple structure, convenient operation, good sealing performance and long service life, and is suitable for conveying pipeline systems of oil, gas and water.
Description
The utility model relates to a kind of gate valve, particularly relates to a kind of pressure oil seal plate gate valve.
Existing pressure oil seal plate gate valve generally is made up of valve body, valve seat, flashboard, valve rod, lifting gear and the grease seal pair etc. that are arranged in the valve body.Wherein valve body is a cast structure, and flashboard has the massive plate of seal gease pod apertures for its top.Valve seat is for having the cylindrical structural of seal gease pod apertures and seal gease lubrication groove on it, the seal gease injection syringe of being made up of oil cylinder piston is equipped with on its top.Seal gease pod apertures on seal gease injection syringe, flashboard and the valve seat, and the seal gease lubrication groove on the valve seat has constituted the seal gease injected system of this kind plate valve.The oil pressure sealing principle is, when the gate valve turn-off transient, when valve rod moves down, produce the differential pressure of valve insertion and gate valve entry end, the piston that promotes in the oil cylinder is clamp-oned seal gease pod apertures on valve seat and the flashboard with seal gease, enters in the seal gease lubrication groove on the valve seat again, forms grease seal.Along with the gate valve bore increases, the seal gease runner can extend, and resistance increases, and the differential pressure that gate valve produces when closing moment is limited, will produce because of fuel feeding is not enough and leak, and is unreliable to the heavy caliber Gate-valve sealing.And seal gease injected system complex structure.
The purpose of this utility model is to provide a kind of oil pressure sealing to be realized by the structure of flashboard and valve seat, has saved the pressure oil seal plate gate valve of seal gease injected system.
The utility model pressure oil seal plate gate valve comprises the valve body that is welded by steel pipe or steel plate, and the valve seat that cooperates with valve body is arranged on the flashboard in the valve body, valve rod that is connected with flashboard and lifting gear.Wherein the valve seat bottom prolongs, and forms cover plate isometric with flashboard and that shape is consistent, and promptly cover plate is the some of valve seat, and the two is an overall structure.Spring and O RunddichtringO are housed on the fitting surface of valve seat and valve body, are embedded with soft seal ring on the fitting surface of valve seat and flashboard, make of rubber or other soft material.On two fitting surfaces of valve seat and flashboard surface-treated layer is arranged all.Surface-treated layer can be overlay cladding, spray-welding coating or coating.Lifting gear is arranged on filler and pressing plate in order to prevent that valve rod from leaking between valve body, valve rod, support by the support that is connected with valve body, is loaded on the thrust bearing on the support, the Stem Mut that cooperates with valve rod, and the handwheel that is connected with Stem Mut is formed.
The advantage of the utility model pressure oil seal plate gate valve is simple in structure, easy to operate, good airproof performance, and long service life is applicable to oil, gas, water pipeline system.
Describe the utility model embodiment in detail below in conjunction with accompanying drawing.
Fig. 1: the utility model structural representation.
Fig. 2: the utility model fundamental diagram.
The utility model pressure oil seal plate gate valve, comprise valve body 1, the valve seat 2 that cooperates with valve body 1, cover plate 3 isometric with the interior flashboard of valve body 17 and that shape is consistent prolong to be formed at valve seat 2 bottoms, spring 4 is housed on the valve seat 2, O RunddichtringO 5 and soft seal ring 6, the valve rod 8 that is connected with flashboard 7, the support 9 that is connected with valve body 1, be arranged on the filler 10 and the pressing plate 11 of 9 on valve rod 8, valve body 1 and support, be loaded on the thrust bearing 12 on the support 9, the Stem Mut 13 that cooperates with valve rod 8, the handwheel 14 that is connected with Stem Mut 13.
The working principle (referring to Fig. 2) of the utility model pressure oil seal plate gate valve is, valve insertion is equipped with pressure oil during use, when opening state, flashboard 7 is on the A position, pod apertures on the flashboard 7 communicates with valve body 1 runner, and flashboard 7 separates valve insertion and runner with the matching trim of valve seat 2.In the time of in off position, flashboard 7 is in the B position, and runner is blocked by flashboard, and the pod apertures on the flashboard 7 is between two valve seats 2, the sealing pair that flashboard 7 and valve seat are 2 is filled the formed capillary leak point of two fitting surface irregularity degreees by its fitting surface, sealing oil, and soft seal ring 6 threes form.The sealing load that flashboard 7 and valve seat are 2 is then by spring 4 pressure, and entry end hydrodynamic pressure and the oil pressure three that compression valve inner chamber pasta gas forms when closing form.
Claims (3)
1, a kind of pressure oil seal plate gate valve comprises valve body, the valve seat that cooperates with valve body, be arranged on the flashboard in the valve body, valve rod that is connected with flashboard and lifting gear, and sealed member, it is characterized in that the valve seat bottom prolongs, and forms cover plate isometric with flashboard and that shape is consistent.
2, pressure oil seal plate gate valve as claimed in claim 1 is characterized in that being embedded with soft seal ring on the fitting surface of valve seat and flashboard.
3, pressure oil seal plate gate valve as claimed in claim 1 is characterized in that on two fitting surfaces of flashboard and valve seat surface-treated layer being arranged all.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95242613 CN2216175Y (en) | 1995-01-10 | 1995-01-10 | pressure oil seal flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95242613 CN2216175Y (en) | 1995-01-10 | 1995-01-10 | pressure oil seal flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2216175Y true CN2216175Y (en) | 1995-12-27 |
Family
ID=33883533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95242613 Expired - Fee Related CN2216175Y (en) | 1995-01-10 | 1995-01-10 | pressure oil seal flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2216175Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410994A (en) * | 2013-08-01 | 2013-11-27 | 四川崇泰石油机械有限公司 | Sand-proofing valve |
| CN103486288A (en) * | 2013-09-04 | 2014-01-01 | 苏州市燃气设备阀门制造有限公司 | Gate valve structure |
-
1995
- 1995-01-10 CN CN 95242613 patent/CN2216175Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410994A (en) * | 2013-08-01 | 2013-11-27 | 四川崇泰石油机械有限公司 | Sand-proofing valve |
| CN103410994B (en) * | 2013-08-01 | 2016-01-27 | 四川崇泰石油机械有限公司 | Sand prevention valve |
| CN103486288A (en) * | 2013-09-04 | 2014-01-01 | 苏州市燃气设备阀门制造有限公司 | Gate valve structure |
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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 |