CN203656234U - Movable rigid-sealing zero-leakage knife-shaped gate valve - Google Patents
Movable rigid-sealing zero-leakage knife-shaped gate valve Download PDFInfo
- Publication number
- CN203656234U CN203656234U CN201320856611.7U CN201320856611U CN203656234U CN 203656234 U CN203656234 U CN 203656234U CN 201320856611 U CN201320856611 U CN 201320856611U CN 203656234 U CN203656234 U CN 203656234U
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- China
- Prior art keywords
- valve
- cutter type
- valve body
- knife
- flashboard
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- Expired - Fee Related
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Abstract
The utility model discloses a movable rigid-sealing zero-leakage knife-shaped gate valve which comprises a valve body (1). A knife-shaped gate plate (4) vertically movable is arranged in the valve body (1), and the upper portion of the knife-shaped gate plate (4) is rectangular while the lower portion of the same is semicircular. A groove matched with the outline edge of the knife-shaped gate plate (4) is arranged on the inner side of the valve body (1), and a valve seat (2) is arranged on one side of the knife-shaped gate plate (4), contacts with the same and is provided with an O-shaped ring (5) tightly contacting with the valve body (1) along the outer circumference. A pressure ring (3) arranged on the outer side of the valve seat (2) is fixedly connected with the valve body (1) through a screw and presses the valve seat (2) to contact with the knife-shaped gate plate (4) closely, and sealing filler (6) is arranged at an inlet and an outlet of the knife-shaped gate plate (4) on the top of the valve body (1). The movable rigid-sealing zero-leakage knife-shaped gate valve has the advantages that structural design is reasonable; by the aid of the groove matched with the gate plate and arranged in the valve body and the replaceable valve seat, sealing performance is improved greatly, maintenance is facilitated, and service life is prolonged.
Description
Technical field
The utility model relates to valve, is specifically related to movable hard-sealing zero and leaks cutter type gate valve.
Background technique
The design of traditional cutter type gate valve structure is comparatively simple, due to frequent remaining mud or blocky-shaped particle thing between the semicircle lower end of flashboard and bottom, valve body inboard, causes valve plate to be not closed completely, and then occurs leakage; In addition, because valve seat and valve body are integrated, after long-time use, can there is valve seat heavy wear, cause poorly sealedly, also can leak, both affect the technology controlling and process of producing, the working life of having reduced again gate valve.
Model utility content
For the shortcoming of existing cutter type gate valve, the utility model provides a kind of novel zero leakage hard sealing knife type gate valve.
To achieve these goals, the measure that the utility model is taked:
Movable hard-sealing zero leaks cutter type gate valve, comprise valve body, valve inner arranges edge perpendicular to the up and down cutter type flashboard of pipeline direction, on cutter type flashboard, part is rectangular, lower end semicircular in shape, valve body inboard is provided with the groove that matches with cutter type flashboard contour edge, cutter type flashboard one side is provided with the valve seat being in contact with it, valve seat is provided with and the O type circle of valve body close contact along excircle, the trim ring that valve seat outside is set is fastenedly connected by screw and valve body, and compress valve seat and make itself and cutter type flashboard close contact, cutter type flashboard top is connected with valve rod by movable joint, valve body top cutter type flashboard import and export is provided with stuffing box packing.
Cutter type flashboard semi-circular profile edge is provided with chamfering.
Cutter type flashboard material is 2Cr13 stainless steel.
Seat material is 304 stainless steels.
Stuffing box packing material is graphite.
The beneficial effects of the utility model: reasonable in design, by the groove and the Changable type valve seat that coordinate with valve plate are set in valve body, greatly improve sealability, easy to maintenance, extend working life.
Brief description of the drawings
Fig. 1, main pseudosection of the present utility model;
Fig. 2, left pseudosection of the present utility model;
The plan view of Fig. 3, cutter type flashboard;
The sectional drawing of Fig. 4, cutter type flashboard.
Embodiment
Movable hard-sealing zero leaks cutter type gate valve, comprise valve body 1, valve body 1 inside arranges edge perpendicular to the up and down cutter type flashboard 4 of pipeline direction, on cutter type flashboard 4, part is rectangular, lower end semicircular in shape, valve body 1 inboard is provided with the groove that matches with cutter type flashboard 4 contour edges, cutter type flashboard 4 one sides are provided with the valve seat 2 being in contact with it, valve seat 2 is provided with and the O type circle 5 of valve body 1 close contact along excircle, the trim ring 3 that valve seat 2 outsides are set is fastenedly connected by screw and valve body 1, and compress valve seat 2 and make itself and cutter type flashboard 4 close contacts, cutter type flashboard 4 tops are connected with valve rod 10 by movable joint, valve body 1 top cutter type flashboard 4 import and exports are provided with stuffing box packing 6, cutter type flashboard 4 semi-circular profile edges are provided with chamfering.Cutter type flashboard 4 materials are 2Cr13 stainless steel, and valve seat 2 materials are 304 stainless steels, and the hardness of valve seat 2 is less than the hardness of cutter type flashboard 4, once valve seat 2 serious wear can be changed in time; Stuffing box packing 6 materials are graphite, have both ensured sealability, have again good lubrication property.The beneficial effects of the utility model: reasonable in design, by the groove and the Changable type valve seat that coordinate with valve plate are set in valve body, greatly improve sealability, easy to maintenance, extend working life.
The utility model combines gate valve, ball valve, and the correlation technique of butterfly valve, is successfully to have manufactured experimently out movable hard-sealing zero to leak cutter type gate valve on this three's basis.It has thoroughly solved knife gate valve can not accomplish the mythology of zero leakage, its structure movement valve seat (point soft seal) and hard sealing, movable valve seat (soft seal) has replaceable metal seat valve (rubber ring) composition, can change very easily the seal ring with wearing and tearing, and can make metal seat valve sealing (polytetrafluoroethylsealed sealed) according to customer demand, and can well reach seal request.Thoroughly make up and belonged to the difficult sealing of valve base sealing (tetrafluoro) in the past and process inconvenient deficiency.The knife gate valve sealing structure principle that is the metal o-ring of a kind of valve with changeable valve seat 304+STL be by flashboard and eyelet near, thereby reach sealing effect, this structure main feature is, metal o-ring is in the step groove of big envelope on valve seat, seal ring is locked by metal gland, make can not come off in seal ring and flashboard switch seal process, and metal o-ring breakes, can take off metal gland and arbitrarily change metal o-ring.Zero leakage cutter type gate valve utilization efficiency is provided greatly.Can solve well the solid powder running in industries such as electric power, oil, chemical industry, papermaking, urban construction, sewage environment-friendly engineering, metallurgy, cement plants and a wear-resistant difficult problem of starching class medium, be a kind of cost-effective premium quality product.Valve seat is to have adopted 304+STL, or H alloy, stainless steel series etc.Can adopt (rubber; tetrafluoro; polyurethane ...) repair and replacement conveniently; need not dismantle valve just can change; long service life, meanwhile valve has also increased adjusting screw newly and has regulated the sealing of flashboard and valve seat with it, makes flashboard form secondary seal; performance protection piece is that flashboard better seals, and prevention flashboard is out of shape in the situation that pressure is excessive.
Claims (5)
1. movable hard-sealing zero leaks cutter type gate valve, comprise valve body (1), it is characterized in that: valve body (1) inside arranges edge perpendicular to the up and down cutter type flashboard (4) of pipeline direction, the upper part of cutter type flashboard (4) is rectangular, lower end semicircular in shape, valve body (1) inboard is provided with the groove that matches with cutter type flashboard (4) contour edge, cutter type flashboard (4) one sides are provided with the valve seat (2) being in contact with it, valve seat (2) is provided with and the O type circle (5) of valve body (1) close contact along excircle, the trim ring (3) that valve seat (2) outside is set is fastenedly connected by screw and valve body (1), and compress valve seat (2) and make itself and cutter type flashboard (4) close contact, cutter type flashboard (4) top is connected with valve rod (10) by movable joint, valve body (1) top cutter type flashboard (4) import and export is provided with stuffing box packing (6).
2. movable hard-sealing zero according to claim 1 leaks cutter type gate valve, it is characterized in that, cutter type flashboard (4) semi-circular profile edge is provided with chamfering.
3. movable hard-sealing zero according to claim 1 and 2 leaks cutter type gate valve, it is characterized in that, cutter type flashboard (4) material is 2Cr13 stainless steel.
4. movable hard-sealing zero according to claim 1 leaks cutter type gate valve, it is characterized in that, valve seat (2) material is 304 stainless steels.
5. movable hard-sealing zero according to claim 1 leaks cutter type gate valve, it is characterized in that, stuffing box packing (6) material is graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320856611.7U CN203656234U (en) | 2013-12-24 | 2013-12-24 | Movable rigid-sealing zero-leakage knife-shaped gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320856611.7U CN203656234U (en) | 2013-12-24 | 2013-12-24 | Movable rigid-sealing zero-leakage knife-shaped gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203656234U true CN203656234U (en) | 2014-06-18 |
Family
ID=50922622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320856611.7U Expired - Fee Related CN203656234U (en) | 2013-12-24 | 2013-12-24 | Movable rigid-sealing zero-leakage knife-shaped gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203656234U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482235B (en) * | 2014-12-17 | 2017-01-04 | 河南盛誉实业有限公司 | A kind of knife gate valve |
| CN116066582A (en) * | 2023-03-07 | 2023-05-05 | 山东宏丰智能装备有限公司 | Automatic pressure relief single valve seat gate valve |
-
2013
- 2013-12-24 CN CN201320856611.7U patent/CN203656234U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482235B (en) * | 2014-12-17 | 2017-01-04 | 河南盛誉实业有限公司 | A kind of knife gate valve |
| CN116066582A (en) * | 2023-03-07 | 2023-05-05 | 山东宏丰智能装备有限公司 | Automatic pressure relief single valve seat gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140618 Termination date: 20151224 |
|
| EXPY | Termination of patent right or utility model |