CN201636354U - Corrugated pipe gate valve - Google Patents
Corrugated pipe gate valve Download PDFInfo
- Publication number
- CN201636354U CN201636354U CN2010201700997U CN201020170099U CN201636354U CN 201636354 U CN201636354 U CN 201636354U CN 2010201700997 U CN2010201700997 U CN 2010201700997U CN 201020170099 U CN201020170099 U CN 201020170099U CN 201636354 U CN201636354 U CN 201636354U
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- CN
- China
- Prior art keywords
- valve
- valve body
- corrugated pipe
- rod
- bellows
- 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 corrugated pipe gate valve comprising a valve body, a valve cover, a rod, a corrugated pipe and a gate plate, wherein the valve cover and the valve rod are arranged on the valve body; the corrugated pipe is sheathed on the valve rod; the gate plate is arranged at the lower end part of the valve rod; the upper end of the corrugated pipe is provided with a sealing cap which is opened at two ends and is in an inverted bowl shape; and the opening at the upper end of the sealing cap is fixed at the outer side of the corrugated pipe, and the opening at the lower end thereof is tightly attached at the inner wall of the valve body. When the corrugated pipe is compressed, the sealing cap has a limiting function on the corrugated pipe, thus preventing a gap between the corrugated pipe and the valve rod from enlarging. Simultaneously, the opening at the lower end of the sealing cap is tightly attached at the inner wall of the valve body, thus enhancing the sealing performance between the valve body and the valve rod to certain extent. The contact surface of the valve body and the valve cover is provided with a gasket, and the valve body and the valve cover are fastened by bolts and nuts. By being additionally provided with the gasket, the corrugated pipe gate valve can effectively improve the sealing performance of the valve body and the valve cover. In addition, the gate plate is welded at the lower end of the valve rod, thus also being beneficial to enhancing the connection strength between the gate plate and the valve rod.
Description
Technical field
The utility model belongs to valve technology field, relates in particular to a kind of bellows gate valve.
Background technique
At present, the open-shut device of gate valve is the flashboard of plug type in the market, and its sealing surface is the plane or the conical surface.The motion mode of valve rod has elevating lever-type or lifting rotation rod-type, and gate valve only is applicable to complete shut-down or standard-sized sheet, does not allow to do to regulate and throttling, belongs to forced seal formula gate.When valve closing, need exert pressure, to guarantee that sealing surface does not leak to flashboard.The patent No. is 200810039059.6, denomination of invention provides a kind of technological scheme for the model utility of " a kind of gate valve for welding connected type high-temperature resistant bellows ", i.e. built-up welding Co base cemented carbide seal ring on valve body, again with the below of bellows arrangement in valve rod, strengthen sealing with this, but along with bellows uses for a long time, the sealing between itself and the valve rod will die down gradually.In addition, present most of bellows gate valves are poorly sealed in the joint of its valve body and valve gap, cause working life shorter, increase entreprise cost.
The model utility content
The utility model purpose is to improve between bellows and the valve rod, the sealing between valve body and the valve gap, prolongs the working life of bellows gate valve, reduces entreprise cost.
For achieving the above object, the technological scheme that the utility model adopted is: a kind of bellows gate valve, comprise valve body, be installed on valve gap, the valve rod of valve body upper end, the flashboard that is placed on the bellows on the valve rod and is installed on the valve rod underpart, described bellows upper end is equiped with both ends open and is the sealed cap of being inverted bowl-type, described sealed cap upper end open is fixed in the bellows outside, and its lower ending opening is close to valve interior wall.When bellows compressed, sealed cap played restriction for bellows, prevented that the gap between itself and the valve rod from becoming big.Simultaneously, the sealed cap lower ending opening is close to valve interior wall, has also strengthened the sealing between valve body and the valve rod to a certain extent.
Further, the surface of contact of described valve body and valve gap is placed with pad, and valve body and valve gap are fastening by screw bolt and nut.By increasing pad, can effectively improve the sealability between valve body and the valve gap.
Further, described flashboard is welded in the underpart of valve rod, and this integral structure helps strengthening the join strength between flashboard and the valve rod.
The beneficial effects of the utility model are:
1, by sealed cap is set, strengthens the working life of bellows effectively, improved the sealing between valve body and the valve rod.
2, place pad at the surface of contact of valve body and valve gap, and with screw bolt and nut that valve body and valve gap is fastening, this technological scheme is simple and practical, and good sealing effect can effectively prolong working life of bellows gate valve.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the structural representation of bellows gate valve described in the utility model.
Embodiment
As shown in Figure 1, a kind of bellows gate valve, comprise valve body 1, be installed on valve gap 2, the valve rod 3 of valve body 1 upper end, the flashboard 5 that is placed on the bellows 4 on the valve rod 3 and is installed on valve rod 3 underparts, described bellows 4 upper ends are equiped with both ends open and are the sealed cap 6 of being inverted bowl-type, described sealed cap 6 upper end open are fixed in bellows 4 outsides, and its lower ending opening is close to valve body 1 inwall.When bellows 4 compression, sealed cap 6 plays restriction for bellows 4, prevents that itself and gap between the valve rod 3 from becoming greatly.Simultaneously, sealed cap 6 lower ending openings are close to valve body 1 inwall, have also strengthened the sealing between valve body 1 and the valve rod 3 to a certain extent.
Further, described valve body 1 is placed with pad 7 with the surface of contact of valve gap 2, and valve body 1 is fastening by screw bolt and nut with valve gap 2.By increasing pad 7, can effectively improve the sealability between valve body 1 and the valve gap 2.
Further, described flashboard 5 is welded in the underpart of valve rod 3, and this integral structure helps strengthening the join strength between flashboard 5 and the valve rod 3.
The utility model is not limited to the foregoing description; to those skilled in the art, any conspicuous improvement that the foregoing description of the present utility model is made or change can not exceed the embodiment's of the present utility model who only illustrates by way of example protection domain.
Claims (3)
1. bellows gate valve, comprise valve body (1), be installed on valve gap (2), the valve rod (3) of valve body (1) upper end, the flashboard (5) that is placed on the bellows (4) on the valve rod (3) and is installed on valve rod (3) underpart, it is characterized in that: described bellows (4) upper end is equiped with both ends open and is the sealed cap (6) of being inverted bowl-type, described sealed cap (6) upper end open is fixed in bellows (4) outside, and its lower ending opening is close to valve body (1) inwall.
2. bellows gate valve as claimed in claim 1 is characterized in that: described valve body (1) is placed with pad (7) with the surface of contact of valve gap (2), and valve body (1) is fastening by screw bolt and nut with valve gap.
3. bellows gate valve as claimed in claim 1 is characterized in that: described flashboard (5) is welded in the underpart of valve rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201700997U CN201636354U (en) | 2010-04-26 | 2010-04-26 | Corrugated pipe gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201700997U CN201636354U (en) | 2010-04-26 | 2010-04-26 | Corrugated pipe gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201636354U true CN201636354U (en) | 2010-11-17 |
Family
ID=43080846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201700997U Expired - Fee Related CN201636354U (en) | 2010-04-26 | 2010-04-26 | Corrugated pipe gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201636354U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968147A (en) * | 2014-05-29 | 2014-08-06 | 昆山维萨阀门有限公司 | Corrugated pipe brake valve |
| CN104776240A (en) * | 2015-04-03 | 2015-07-15 | 哈托利海托阀门（杭州）有限公司 | Bellows parallel gate valve |
| CN107940089A (en) * | 2017-09-22 | 2018-04-20 | 郑立新 | Gate valve |
-
2010
- 2010-04-26 CN CN2010201700997U patent/CN201636354U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968147A (en) * | 2014-05-29 | 2014-08-06 | 昆山维萨阀门有限公司 | Corrugated pipe brake valve |
| CN104776240A (en) * | 2015-04-03 | 2015-07-15 | 哈托利海托阀门（杭州）有限公司 | Bellows parallel gate valve |
| CN107940089A (en) * | 2017-09-22 | 2018-04-20 | 郑立新 | Gate 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: 20101117 Termination date: 20120426 |