CN202790623U - Zero-friction parallel type gate valve - Google Patents
Zero-friction parallel type gate valve Download PDFInfo
- Publication number
- CN202790623U CN202790623U CN 201220494457 CN201220494457U CN202790623U CN 202790623 U CN202790623 U CN 202790623U CN 201220494457 CN201220494457 CN 201220494457 CN 201220494457 U CN201220494457 U CN 201220494457U CN 202790623 U CN202790623 U CN 202790623U
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- CN
- China
- Prior art keywords
- gate valve
- parallel type
- gate
- board
- parallel
- 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
Disclosed is a zero-friction parallel type gate valve. A flashboard of the zero-friction parallel type gate valve is a parallel type double gate discs. The zero-friction parallel type gate valve is not provided with a soft sealing valve seat of a parallel sing-disc gate valve existing in the prior art. And a top wedge and a gap between two flashboards of a parallel type double-gate-disc gate valve in the prior art do not exist in the zero-friction parallel type gate valve. The zero-friction parallel type gate valve can be applicable to different pressure, temperature and calibers. A pair of sealing pair is reduced compared with the parallel sing-disc gate valve and the parallel type double-gate-disc gate valve in the prior art. Zero friction can be achieved in the process of starting, stopping and lifting of the other sealing pair. Especially, a flashboard structure is simple, and manufacture and maintenance are convenient. Except the novel flashboard, the other parts are the same with the parallel type gate valve in the prior art. The zero-friction parallel type gate valve is an ideal, safe and reliable novel parallel type gate valve.
Description
Technical field
The utility model relates to a kind of zero friction Parallel gate valve Parallel slide valve, its sealing pair of realizing zero friction is simple in structure, there are not the soft seal valve seat of Parallel gate valve Parallel slide valve in the present technology or top wedge and the space between two flashboards, and be applicable to the Parallel gate valve Parallel slide valve of various pressure, temperature, bore, belong to design and the manufacturing technology field of industry valve.
Background technique
The sealing surface of seat of parallel type single-shutter gate valve of the prior art adopts soft seal fixing or that float, because of can not forced seal, and can not adapt to the variation of various pressure and temperatures; Double disk parallel gate valve produces sealing force by the top wedge, and sealing surface relatively moves little, between two flashboards space is arranged, and structure is complicated, runs into larger impurity in the medium, easily scratch, multiplex in low pressure and in small-bore; The problem of these existence will be suitable for various pressure, temperature and bore scope, will make respectively the same form valve of plurality of specifications and requirement, causes the wasting of resources, and unfavorable low-carbon emission reduction is because being necessary that the prior art is improved.
Summary of the invention
The purpose of this utility model is to overcome parallel type single-shutter gate valve and the common problem that can not be suitable for various pressure, temperature and bore variation that exists of double disk parallel gate valve of prior art, provide a kind of simple in structure, the cancellation soft seal, cancellation top wedge, reduce a pair of sealing pair, sealing surface relatively moves larger, can adapt to the variation of various pressure, temperature and bore, and realizes the Parallel gate valve Parallel slide valve of zero friction with simple sealing pair structure.
The utility model is finished by following technical proposal: a kind of zero friction Parallel gate valve Parallel slide valve, only the flashboard structure of Parallel gate valve Parallel slide valve of the prior art improved, it is characterized in that it is the rectangular flashboard that plectane that novel parallel type flashboard is right-angled trapezium by two axial cross sections forms a side-looking, the main gate-board top has an extension fork to link to each other with the valve rod lower end, and a slotted hole is offered at the middle part; Auxiliary gate-board top is fixed with a square bar, and square bar passes the slotted hole at main gate-board middle part, makes auxiliary gate-board hang a sagging side at main gate-board, and the junction plane of major-minor flashboard is that both trapezoidal inclined planes are adjacent to together.
Described novel valve has been cancelled the soft seal valve seat of parallel type single-shutter gate valve in the prior art; Cancelled the top wedge between the two shoe brake plates of double disk parallel gate valve, sealing surface all adopts metal hard-sealing, produces sealing force by the inclined-plane of the inclined-plane extruding auxiliary gate-board of main gate-board, and outside dimensions is identical with the Parallel gate valve Parallel slide valve of prior art with using method.
The utility model compared with prior art has following advantages and effect: adopt such scheme, a pair of sealing pair of novel minimizing reduces by 50% sealing surface processing cost, does not have top wedge and room between the parallel type double-flashboard in the present technology between the major-minor flashboard; The soft valve seat that does not also have parallel type Single disc in the present technology, novel solid void-free flashboard structure can be made the Parallel gate valve Parallel slide valve that is suitable for various pressure, temperature, bore.
Adopt such scheme, be suspended on the auxiliary gate-board of main gate-board one side, pass the sagging segment distance of slotted hole at main gate-board middle part by the square bar of section fixed thereon, make two rectangular trapezoidal major-minor flashboard inclined-planes lean against downward dislocation, be combined into rectangular reduced width, make auxiliary gate-board and valve seat remain larger space at lifting process medium pressure, can not allow larger impurity scratch sealing surface in the scratch of auxiliary gate-board and valve seat and the medium, when closing, auxiliary gate-board arrives first bottom the valve casing and the valve seat that aligns, put in place behind the main gate-board, the inclined-plane backboard of extruding auxiliary gate-board makes auxiliary gate-board at the axis top offset of valve seat, produces sealing force, parallel compression valve seat, realize that zero friction closes, on the contrary when opening main gate-board first upwards operation leave room, auxiliary gate-board is subjected to that pressure medium is parallel lifts off a seat, up with main gate-board again, be that zero friction is opened equally.
Novel parallel gate plate, both simple in structure, to make easily, the sealing surface processing cost reduces by 50%, and the scope that adapts to pressure, temperature, bore is large, is again zero friction, is a desirable safe and reliable novel parallel formula double-flashboard gate valve in fact.
Description of drawings
Fig. 1 is novel half-open position, shows the major-minor shutter malposition, the structural representation of reduced width.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further: be the structure of the flashboard half-open position of Novel-parallel gate valve such as Fig. 1, axial cross section is that the top of the main gate-board 1 of right-angled trapezium is connected with valve rod 3 by hanging fork 2, and the middle part has a slotted hole 4; Axial cross section is that the top of the auxiliary gate-board 5 of right-angled trapezium is fixed with a square bar 6, and its effect is to prevent that auxiliary gate-board 5 from spinning, and departs from the sliding rail that leans against with main gate-board 1 inclined-plane.Square bar 6 passes the slotted hole 4 at main gate-board 1 middle part, make auxiliary gate-board 5 hang a sagging side at main gate-board 1, at this moment because the dislocation of major-minor flashboard, the rectangular width that two right-angled trapezium are combined into diminishes, auxiliary gate-board 5 is under the effect of pressure medium 8, in the vertical lift process, keep larger gap 9 with valve seat 7 all the time, realize sealing pair zero friction.
The generation of sealing force: the square bar 6 on the top, inclined-plane of auxiliary gate-board 5 passes the slotted hole 2 at main gate-board 1 middle part, be suspended on a side on main gate-board 1 inclined-plane, make up and down freely activity of auxiliary gate-board 5, when the major-minor flashboard that misplaces descends with valve rod 3, stop and align valve seat 7 in the bottom that sagging auxiliary gate-board 5 reaches first valve casing 10, at this moment main gate-board 1 continues to descend, the inclined-plane of its inclined-plane extruding auxiliary gate-board 5, auxiliary gate-board 5 is subjected to displacement at the axis of valve seat 7, overcome pressure medium 8 and produce sealing force, make auxiliary gate-board 5 parallel being pressed on the valve seat 7; Finish and close, otherwise open.
Reduce a pair of sealing pair and the excursion that can adapt to pressure, temperature and bore: because 1 of main gate-board is responsible for extruding auxiliary gate-board 5, therefore can reduce a pair of sealing pair of main gate-board 1 side; Because novel one is to have cancelled the valve seat soft seal of parallel type single-shutter gate valve in the prior art, the 2nd, cancelled top wedge and the space between the parallel type double-flashboard in the prior art, after having overcome these 2 problems, Novel main flashboard 1 and auxiliary gate-board 5 form the not double-flashboard of top wedge and space, valve seat 7 is hard sealings, that the extruding angle of main gate-board 1 is than large nearly 3 times of the extruding angle of the wedge-type flashboard of prior art again, push the angle and be inversely proportional to by folder power, when the temperature and pressure of valve increases, the specific pressure of sealing pair increases, main gate-board 1 still can easily be mentioned, and therefore novel flashboard structure can bear various pressure, the variation of temperature and bore.
Claims (1)
1. one kind zero friction Parallel gate valve Parallel slide valve, only the flashboard structure of Parallel gate valve Parallel slide valve of the prior art improved, it is characterized in that it is the rectangular flashboard that plectane that novel parallel type flashboard is right-angled trapezium by two axial cross sections forms a side-looking, the main gate-board top has an extension fork to link to each other with the valve rod lower end, and a slotted hole is offered at the middle part; Auxiliary gate-board top is fixed with a square bar, and square bar passes the slotted hole at main gate-board middle part, makes auxiliary gate-board hang a sagging side at main gate-board, and the junction plane of major-minor flashboard is that both trapezoidal inclined planes are adjacent to together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220494457 CN202790623U (en) | 2012-09-26 | 2012-09-26 | Zero-friction parallel type gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220494457 CN202790623U (en) | 2012-09-26 | 2012-09-26 | Zero-friction parallel type gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202790623U true CN202790623U (en) | 2013-03-13 |
Family
ID=47817888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220494457 Expired - Fee Related CN202790623U (en) | 2012-09-26 | 2012-09-26 | Zero-friction parallel type gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202790623U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214357A (en) * | 2014-08-29 | 2014-12-17 | 苏州福润机械有限公司 | Gate valve |
-
2012
- 2012-09-26 CN CN 201220494457 patent/CN202790623U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214357A (en) * | 2014-08-29 | 2014-12-17 | 苏州福润机械有限公司 | 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: 20130313 Termination date: 20130926 |