CN201891860U - Single-face hard sealing parallel gate plate type gate valve - Google Patents
Single-face hard sealing parallel gate plate type gate valve Download PDFInfo
- Publication number
- CN201891860U CN201891860U CN2010205955800U CN201020595580U CN201891860U CN 201891860 U CN201891860 U CN 201891860U CN 2010205955800 U CN2010205955800 U CN 2010205955800U CN 201020595580 U CN201020595580 U CN 201020595580U CN 201891860 U CN201891860 U CN 201891860U
- Authority
- CN
- China
- Prior art keywords
- gate plate
- valve
- flashboard
- sealing
- 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 relates to a single-face hard sealing parallel gate plate type gate valve, which comprises a valve body, a valve stem, a left gate plate and a right gate plate. The end of the valve stem extends from the top end of the valve body into the valve body, and the left gate plate and the right gate plate are connected with the end of the valve stem via gate plate supports. The single-face hard sealing parallel gate plate type gate valve is characterized in that the inner surface of the left gate plate is a shaft structure, the axis of the shaft structure is parallel to that of a valve body flow channel, the inner surface of the right gate plate is a shaft sleeve structure capable of being sleeved on a shaft of the left gate plate, and a prestressing spring is arranged between the left gate plate and the right gate plate. The single-face hard sealing parallel gate plate type gate valve has the advantages that the left gate plate and the right gate plate can closely fit with sealing end surfaces of a valve seat of the valve body under the action of the prestressing spring, and can also maintain being sealed in low pressure, the left gate plate is pushed away from the sealing end surface of the valve seat by media along with increase of pressure of the media, the right gate plate is directed to the other sealing end surface of the valve seat by the media to form single-face sealing, and the sealing performance of the single-face hard sealing parallel gate plate type gate valve is better along with increase of the pressure of the media.
Description
Technical field
The utility model relates to a kind of gate valve, the parallel flashboard gate valve of the hard sealing of particularly a kind of single face.
Background technique
Gate valve is to use a kind of comparatively widely valve in the block valve, is used for connecting or blocking the medium of pipeline.The open-shut device of gate valve is a flashboard, can be divided into wedge-type flashboard and parallel flashboard by the configuration of flashboard sealing surface, and parallel flashboard type gate valve adopts the double-flashboard structure usually, and it mainly comprises valve body, stretches into the valve rod in the valve body, the left and right flashboard that is connected with valve rod.It blocks principle, and valve rod promotes in the runner that left and right flashboard enters valve body, and left gate valve promotes right flashboard under the effect of valve flowing channel one side pressure medium sealing surface is pressed to opposite side, realizes the selfsealings of runner.It exists shortcoming to be: need the pressure of fluid higher during sealing, pressure is low can't to be promoted right flashboard and is close to sealing surface, so sealing effect is poor during low pressure.
The model utility content
The technical problems to be solved in the utility model provides a kind of parallel flashboard gate valve of the hard sealing of single face of high and low pressure good sealing effect.
For solving the problems of the technologies described above, the technical solution of the utility model is: the parallel flashboard gate valve of the hard sealing of a kind of single face, comprise valve body, valve rod and left and right flashboard, the valve rod end is stretched in the valve body from the valve body top, and left and right flashboard is connected with the valve rod end by the flashboard support; Its innovative point is: described left flashboard inner side surface is an axle construction, the axis of this axle construction and valve flowing channel parallel axes, and right flashboard inner side surface is for being enclosed within the axle sleeve structure on the left flashboard axis; Be provided with preloading spring between left side flashboard and the right flashboard.
Advantage of the present utility model is: left and right flashboard can be close to the valve body and valve seat seal face under the effect of preloading spring, when low pressure, also can keep sealing, increase along with pressure medium, left side flashboard is pushed away the seal face of valve seat by medium, and right flashboard is formed the single face sealing by another seal face of the directed valve seat of medium, and high more its sealability of pressure medium is good more.
Description of drawings
Accompanying drawing is the parallel flashboard gate valve structure schematic representation of the hard sealing of the utility model single face.
Embodiment
As shown in drawings, the utility model relates to a kind of parallel flashboard gate valve of the hard sealing of single face of high and low pressure good sealing effect, comprises valve body 1, valve rod 2, left flashboard 3, right flashboard 4, preloading spring 5.
Above-mentioned valve rod 2 stretches in the valve body 1 from the top of valve body 1, its end is connected with left flashboard 3 and right flashboard 4 by the flashboard support, left side flashboard 3 inner side surfaces are axle construction, the axis of this axle construction and valve body 1 runner parallel axes, and right flashboard 4 inner side surfaces are the axle sleeve structure that can be enclosed within on 3 on the left flashboard.Preloading spring 5 is located between left flashboard 3 and the right flashboard 4.
Left and right flashboard 3,4 can be close to valve body 1 valve base sealing end face under the effect of preloading spring 5, when low pressure, also can keep sealing, increase along with pressure medium, left side flashboard 3 is pushed away the seal face of valve seat by medium, and right flashboard 4 is formed the single face sealing by another seal face of the directed valve seat of medium, and high more its sealability of pressure medium is good more.
Claims (1)
1. the parallel flashboard gate valve of the hard sealing of single face comprises valve body, valve rod and left and right flashboard, and the valve rod end is stretched in the valve body from the valve body top, and left and right flashboard is connected with the valve rod end by the flashboard support; It is characterized in that: described left flashboard inner side surface is an axle construction, the axis of this axle construction and valve flowing channel parallel axes, and right flashboard inner side surface is for being enclosed within the axle sleeve structure on the left flashboard axis; Be provided with preloading spring between left side flashboard and the right flashboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205955800U CN201891860U (en) | 2010-11-08 | 2010-11-08 | Single-face hard sealing parallel gate plate type gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205955800U CN201891860U (en) | 2010-11-08 | 2010-11-08 | Single-face hard sealing parallel gate plate type gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201891860U true CN201891860U (en) | 2011-07-06 |
Family
ID=44221337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205955800U Expired - Fee Related CN201891860U (en) | 2010-11-08 | 2010-11-08 | Single-face hard sealing parallel gate plate type gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201891860U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410997A (en) * | 2013-08-26 | 2013-11-27 | 南通国电电站阀门有限公司 | High-pressure-relief type parallel-double-gate single side hard sealing gate valve |
| CN107228204A (en) * | 2017-06-23 | 2017-10-03 | 南通国电电站阀门股份有限公司 | A kind of overcritical No leakage bellows forging parallel slide valve |
-
2010
- 2010-11-08 CN CN2010205955800U patent/CN201891860U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410997A (en) * | 2013-08-26 | 2013-11-27 | 南通国电电站阀门有限公司 | High-pressure-relief type parallel-double-gate single side hard sealing gate valve |
| CN103410997B (en) * | 2013-08-26 | 2015-08-19 | 南通国电电站阀门有限公司 | High pressure relief formula double disc parallel seat single-face hard sealing gate valve |
| CN107228204A (en) * | 2017-06-23 | 2017-10-03 | 南通国电电站阀门股份有限公司 | A kind of overcritical No leakage bellows forging parallel slide valve |
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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: 20110706 Termination date: 20111108 |