CN100529486C - Large caliber high pound level alloy steel gate valve - Google Patents
Large caliber high pound level alloy steel gate valve Download PDFInfo
- Publication number
- CN100529486C CN100529486C CNB2008101083612A CN200810108361A CN100529486C CN 100529486 C CN100529486 C CN 100529486C CN B2008101083612 A CNB2008101083612 A CN B2008101083612A CN 200810108361 A CN200810108361 A CN 200810108361A CN 100529486 C CN100529486 C CN 100529486C
- Authority
- CN
- China
- Prior art keywords
- valve
- flashboard
- eliminator
- valve seat
- cemented carbide
- 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
Large caliber high pound level alloy steel gate valve provided by the invention relates to valve technology field.Which comprises at least valve body, valve seat, flashboard, valve gap and valve rod, valve body and valve gap are fixedly connected, valve rod is arranged in valve body and valve gap, the outer end of valve rod fixedly handwheel or with the motor drive mechanism transmission joint, valve rod is inner to be connected with flashboard, on the sealing surface of flashboard and valve seat, be fixed with the cemented carbide steel loop respectively, it is characterized in that: it also includes one and closes eliminator, close eliminator and be fixedly connected on the valve interior wall under flashboard, flashboard and valve seat were in the optimum tight mated condition and are as the criterion when the height of closing eliminator was closed eliminator with the contact of flashboard lower edge; All have U type weld groove on the stationary plane of flashboard and valve seat and cemented carbide steel loop.Its advantage is: one, layer is not easy to come off; Two, two of flashboard and valve seat sealing surfaces can be combined in the optimum tight mated condition.
Description
Technical field
The utility model relates to a kind of valve, particularly large caliber high pound level alloy steel gate valve.
Background technique
Gate valve is a kind of universal pipes pressure unit, and it has the advantages that flow resistance is little, negotiability is strong, is usually used in some rugged environment fields relatively such as the oil of pressure pan, High Temperature High Pressure or steam line.For guaranteeing the blocking-up performance of gate valve, when gate valve is closed, must be in the state of closely cooperating between flashboard and the valve seat, this just causes gate valve opening or closing in the closed procedure, and the friction between flashboard and the valve seat is very big.In order to reduce the wearing and tearing of flashboard and sealing surface of seat, prior art adopts the method for the direct pile-up welding hard alloy steel of difference on the sealing surface of flashboard and valve seat.The defective of this method is that layer comes off easily, causes gate valve to leak.Equally, blocking-up performance in order to ensure gate valve, staff's custom tries one's best flashboard to pressing down during operation, to guarantee the degree of closely cooperating of flashboard and sealing surface of seat, yet when staff's operate miss causes the flashboard excessive descent, can cause flashboard to be out of shape, to kill, phenomenon such as sealing surface is pulled, cause gate valve to be scrapped.
Summary of the invention
In view of this, the purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of layer difficult drop-off is provided, and flashboard can be closed in the large caliber high pound level alloy steel gate valve of optimum position.
Technical solution of the present utility model is: large caliber high pound level alloy steel gate valve comprises valve body at least, valve seat, flashboard, valve gap and valve rod, valve body and valve gap are fixedly connected, valve rod is arranged in valve body and valve gap, the outer end of valve rod fixedly handwheel or with the motor drive mechanism transmission joint, valve rod is inner to be connected with flashboard, on the sealing surface of flashboard and valve seat, be fixed with the cemented carbide steel loop respectively, it is characterized in that: it also includes one and closes eliminator, close eliminator and be fixedly connected on the valve interior wall under flashboard, flashboard and valve seat were in the optimum tight mated condition and are as the criterion when the height of closing eliminator was closed eliminator with the contact of flashboard lower edge; All have U type weld groove on the stationary plane of flashboard and valve seat and cemented carbide steel loop.
The utility model has the advantages that: one,, therefore cemented carbide steel loop and flashboard, valve seat weldering connection back layer are not easy to come off owing on the stationary plane of flashboard and valve seat and cemented carbide steel loop, all opened U type weld groove; Two, install one in the valve body bottom and close eliminator; when closing the optimum state, no longer continues by flashboard to move down; make two sealing surfaces of flashboard and valve seat be combined in the optimum tight mated condition, both guaranteed the barrier effect of gate valve, protected flashboard and valve seat can not damage again because of faulty operation.
Description of drawings
Fig. 1 is the utility model valve body dress figure.
Fig. 2 is the utility model flashboard cut-away view.
Fig. 3 is the utility model valve seat cut-away view.
Among the figure: 1, valve body, 2, valve seat, 3, flashboard, 4, close eliminator, 5,8, the cobalt-based ring, 6,7, U type weld groove.
Embodiment
Large caliber high pound level alloy steel gate valve comprises valve body 1, valve seat 2, flashboard 3, closes eliminator 4, valve gap and valve rod, valve body 1 is linked together by screw with valve gap, valve rod is arranged in valve body 1 and valve gap, the outer end of valve rod fixedly handwheel or with the motor drive mechanism transmission joint, valve rod is inner to be connected by the hook groove with flashboard 3, close eliminator 4 and be connected on valve body 1 inwall under the flashboard 3 by screw, flashboard 3 was in the optimum tight mated condition with valve seat 2 and is as the criterion when the height of closing eliminator 4 was closed eliminator 4 with the contact of flashboard 3 lower edges.Have annular U type weld groove 6 on the both ends of the surface of flashboard 3, cobalt-based ring 5 is fixed by welding on the U type weld groove 6.Have annular U type weld groove 7 on the valve seat 2, cobalt-based ring 8 is fixed by welding on the U type weld groove 7.
Claims (2)
1, large caliber high pound level alloy steel gate valve, which comprises at least valve body, valve seat, flashboard, valve gap and valve rod, valve body and valve gap are fixedly connected, valve rod is arranged in valve body and valve gap, the outer end of valve rod fixedly handwheel or with the motor drive mechanism transmission joint, valve rod is inner to be connected with flashboard, on the sealing surface of flashboard and valve seat, be fixed with the cemented carbide steel loop respectively, it is characterized in that: it also includes one and closes eliminator, close eliminator and be fixedly connected on the valve interior wall under flashboard, flashboard and valve seat were in the optimum tight mated condition and are as the criterion when the height of closing eliminator was closed eliminator with the contact of flashboard lower edge; All have U type weld groove on the stationary plane of flashboard and valve seat and cemented carbide steel loop.
2, according to the described large caliber high pound level alloy steel gate valve of claim 1, it is characterized in that: described cemented carbide steel loop is the cobalt-based material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101083612A CN100529486C (en) | 2008-01-17 | 2008-06-06 | Large caliber high pound level alloy steel gate valve |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820030978.2 | 2008-01-17 | ||
| CN200820030978 | 2008-01-17 | ||
| CNB2008101083612A CN100529486C (en) | 2008-01-17 | 2008-06-06 | Large caliber high pound level alloy steel gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101373025A CN101373025A (en) | 2009-02-25 |
| CN100529486C true CN100529486C (en) | 2009-08-19 |
Family
ID=40447327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008101083612A Expired - Fee Related CN100529486C (en) | 2008-01-17 | 2008-06-06 | Large caliber high pound level alloy steel gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100529486C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165234B (en) * | 2013-05-15 | 2017-03-22 | 江苏盐电阀门有限公司 | Wear resistant gate valve and control system thereof |
| CN104482236A (en) * | 2015-01-08 | 2015-04-01 | 鞍山明德科技有限公司 | Novel high-medium-low-pressure wear-resisting double-gate-disc ash gate valve |
-
2008
- 2008-06-06 CN CNB2008101083612A patent/CN100529486C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101373025A (en) | 2009-02-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20090819 Termination date: 20160606 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |