CN104565398A - Wear-resistant sealing butterfly valve - Google Patents
Wear-resistant sealing butterfly valve Download PDFInfo
- Publication number
- CN104565398A CN104565398A CN201410474163.3A CN201410474163A CN104565398A CN 104565398 A CN104565398 A CN 104565398A CN 201410474163 A CN201410474163 A CN 201410474163A CN 104565398 A CN104565398 A CN 104565398A
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- CN
- China
- Prior art keywords
- valve
- rod
- pushing block
- bar
- valve rod
- 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.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/221—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a wear-resistant sealing butterfly valve. The wear-resistant sealing butterfly valve comprises a valve body (1), a valve plate and a valve rod (3), wherein a valve seat (4) is arranged at one end of the valve body; the valve plate consists of a valve core (2) and a rod sleeve (5); the surface of one side of the valve core is matched with the inner surface of the valve seat, thereby realizing sealing contact; the end face of the other side of the valve core extends out of the rod sleeve; the middle part of the valve rod is inserted into a groove of the rod sleeve; the valve rod can be used for driving the valve plate to rotate. The wear-resistant sealing butterfly valve is characterized in that the section of the rod body part passing through the rod sleeve of the middle part of the valve rod is square; a reverse thrust block (6) is arranged in the cavity of the other end of the valve body; a strip-shaped body of the reverse thrust block is parallel to the valve rod; during rotation of the valve plate, the edge of a cam on the rod sleeve can be pressed against the strip-shaped body of the reverse thrust block in order to drive the valve block to move. The butterfly valve has the beneficial effects that the friction interval between the valve core and the valve seat can be greatly reduced, the friction force between the valve core and the valve seat is greatly reduced, wear of a sealing surface between the valve core and the valve seat is reduced, and the service life of the butterfly valve is prolonged.
Description
Technical field
The present invention relates to a kind of butterfly valve, its structure comprises valve body, valve plate, valve rod, and when valve rod rotates, drive valve plate makes butterfly valve open or closes.
Background technique
Existing butterfly generally comprises valve body, valve plate, valve rod, valve seat is provided with in valve body, valve seat can be made up of rigid material or flexible material, valve plate is made up of spool and bar cover, spool can contact with valve base sealing, and in valve rod insertion rod cover, when valve rod rotates, valve plate follows rotation, spool is contacted with valve base sealing or valve seat disengages, realize unlatching or the closedown of butterfly valve.When butterfly valve is opened or close, can produce friction between spool and valve seat, its sealing surface can produce wearing and tearing, the sealability of butterfly valve is declined, affects the working life of butterfly valve.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of wear-resistant seal butterfly valve, and it can make frictional force between spool and valve seat greatly reduce on the basis ensureing butterfly valve seal performance, reduces the wearing and tearing of spool and sealing surface of seat, improves the working life of butterfly valve.
Technological scheme of the present invention is, a kind of wear-resistant seal butterfly valve comprise valve body 1, valve plate, valve rod 3, valve body one end be provided with valve seat 4, the internal surface of valve seat is spherical arc, valve plate overlaps 5 by spool 2 and bar and forms, the shape on the surface of spool side and the inner surface configuration of valve seat match and can realize sealing contacting, the opposite side end face of spool extends rod cover 5, the middle part of valve rod is inserted in the groove of bar cover, the diapire of valve body is inserted in the bottom of valve rod, the top of valve rod is stretched out from the roof sealing of valve body, and valve rod can drive valve plate to rotate; It is characterized in that, the cross section passing the shank portion of bar cover in the middle part of valve rod is square, and in the cavity of the other end of valve body, be provided with anti-pushing block 6, the strip shape body on anti-pushing block is parallel with valve rod, when valve plate rotates, the edge of bar cover overhead cam can prop up the strip shape body of anti-pushing block, and valve block is moved.
Technique effect of the present invention is, valve rod can drive valve plate to rotate when rotating, and when the angle that valve rod rotates is close to when closing close point, the cam edge on valve plate can prop up anti-pushing block, push valve block to valve seat, spool is contacted with valve seat and pushes down the sealing that valve seat realizes spool and valve seat.Compared with prior art can greatly reduce between the spool of this butterfly valve and the friction zone of valve seat, the frictional force between spool and valve seat reduces greatly, reduces the wearing and tearing of the sealing surface of spool and valve seat, extends the working life of butterfly valve.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1, and in figure, positioning block does not draw.
Fig. 3 is the B direction view of Fig. 1.
Mark in accompanying drawing is expressed as: 1-valve body, 2-spool, 3-valve rod, 4-valve seat, 5-bar cover, the anti-pushing block of 6-, 7-positioning block, 8-valve seat screw, the anti-pushing block screw of 9-, 10-adjusting screw, 11-locking nut.
Embodiment
Existing accompanying drawings the specific embodiment of the present invention.
A kind of wear-resistant seal butterfly valve comprises valve body 1, valve plate, valve rod 3; One end cavity of valve body is provided with valve seat 4, and the internal surface of valve seat is spherical arc, is fixed on the inwall of valve body by valve seat screw 8, valve seat end face outwardly and the end face of valve body one end, and described valve seat is made up of copper material or polytetrafluoroethylmaterial material; Valve plate overlaps 5 by spool 2 and bar and forms, and the surface of spool side and the internal surface of valve seat match and can realize sealing contacting, and the opposite side end face of spool extends rod cover 5, and bar cover is perpendicular with the opposite side end face of spool, and described valve plate is Cast Steel; The middle part of valve rod is inserted in the groove of bar cover, and the diapire of valve body is inserted in the bottom of valve rod, and the top of valve rod is stretched out from the roof of valve body, and valve rod can drive valve plate to rotate.
In the middle part of valve rod, the cross section of the body of rod is square, and the diameter dimension on valve rod top equals or slightly larger than the diagonal of middle part body of rod square sectional, the diameter dimension of stem lower portion is equal to or slightly less than the length of side of middle part body of rod square sectional.
Anti-pushing block 6 is provided with at the other end of valve body, anti-pushing block is strip, and the two ends of anti-pushing block are fixed on the inwall of valve body by anti-pushing block screw 9, and anti-pushing block is parallel with valve rod, the end face of the outer side surface of anti-pushing block and the other end of valve body, described anti-pushing block is Cast Steel.
Anti-pushing block also can be designed to " 1. " shape, be integrally formed by ring bodies and bar shape, bar shape is connected along the diametric(al) of ring bodies and the inner ring of ring bodies, the annular diameters of ring bodies is more than or equal to the internal diameter of valve body, the transition portion of ring bodies and bar shape is provided with hole, anti-pushing block is fixed on the inwall of valve body through this hole by anti-pushing block screw 9, adopts such structure can strengthen the intensity of anti-pushing block.
The groove of bar cover is rectangle, the length direction of this groove is consistent with the direction that bar cover stretches out, the length dimension of groove is slightly larger than the length of side of the body of rod in the middle part of valve rod, the width dimensions of groove matches with the size dimension of the body of rod in the middle part of valve rod, cam is arranged on the top of bar cover, when valve plate rotates, the edge of cam can prop up anti-pushing block, and valve block is moved.
Described bar cover is one, is located at the center portion of the opposite side end face of spool, valve rod is fixed two positioning blocks 7, two positioning block and clamps bar cover, makes valve plate can not along the axial motion of valve rod.
Described bar cover is two, is distributed on the opposite side end face of spool symmetrically, and valve rod is fixed two positioning blocks 7, two positioning block between two bars covers, end face and the bar of positioning block overlap relative surface and be affixed, and make valve plate can not along the axial motion of valve rod.Adopt two bar covers, bar can be made to overlap force position between anti-pushing block close to the bar shape two ends of anti-pushing block, the stiffness of bar shape is strengthened.
The course of action of this butterfly valve is, valve rod can drive valve plate to rotate when rotating, and when the angle that valve rod rotates is close to when closing close point, the cam edge on valve plate can prop up anti-pushing block, push valve block to valve seat, spool is contacted with valve seat and pushes down the sealing that valve seat realizes spool and valve seat.
Safeguard the sealability of valve seat and spool for convenience, the bar shape of anti-pushing block can arrange a vernier device, vernier device is made up of two adjusting screw 10 and two locking nuts 11, adjusting screw 10 is spun in the bar shape of anti-pushing block, one end of adjusting screw is overlapped relative with bar, the other end of adjusting screw is rotary with locking nut, when valve seat and spool cause sealability to decline because of wearing and tearing, inside for adjusting screw precession can be made the close to valve seat of spool, to compensate its wear extent, keep sealability, being tightened by locking nut 11 after adjustment completes makes adjusting screw fix.The both sides of valve body are provided with flange and are used for connecting tube, and when the sealability of butterfly declines, unloaded by valve body from pipeline, use vernier device can complete the reparation of sealing, maintenance process is very convenient.
Claims (6)
1. a wear-resistant seal butterfly valve comprise valve body (1), valve plate, valve rod (3), valve body one end be provided with valve seat (4), the internal surface of valve seat is spherical arc, valve plate is made up of spool (2) and bar cover (5), the surface configuration of spool side and the inner surface configuration of valve seat match and can realize sealing contacting, the end face of spool opposite side extends rod cover (5), the middle part of valve rod is inserted in the groove of bar cover, the diapire of valve body is inserted in the bottom of valve rod, the top of valve rod is stretched out from the roof sealing of valve body, and valve rod can drive valve plate to rotate; It is characterized in that, the cross section passing the shank portion of bar cover in the middle part of valve rod is square, anti-pushing block (6) is provided with in the cavity of the other end of valve body, the bar shape of anti-pushing block is parallel with valve rod, when valve plate rotates, the edge of bar cover overhead cam can prop up the strip shape body of anti-pushing block, valve block is moved, in the middle part of valve rod, is provided with the positioning block 7 preventing valve plate along valve rod axis play.
2. butterfly valve according to claim 1, it is characterized in that, the bar shape of anti-pushing block is provided with a vernier device, vernier device is made up of adjusting screw (10) and locking nut (11), adjusting screw (10) is spun in the bar shape of anti-pushing block, one end of adjusting screw is overlapped relative with bar, and the other end of adjusting screw is rotary with locking nut.
3. butterfly valve according to claim 1 and 2, is characterized in that, anti-pushing block is bar shape, and the two ends of anti-pushing block are fixed on the inwall of valve body by anti-pushing block screw (9), the end face of the outer side surface of anti-pushing block and the other end of valve body.
4. butterfly valve according to claim 1 and 2, it is characterized in that, described anti-pushing block is integrally formed by ring bodies and bar shape, bar shape is connected along the diametric(al) of ring bodies and the inner ring of ring bodies, the annular diameters of ring bodies is more than or equal to the internal diameter of valve body, the transition portion of ring bodies and bar shape is provided with hole, and anti-pushing block is fixed on the inwall of valve body through this hole by anti-pushing block screw (9), the end face of the outer side surface of anti-pushing block and the other end of valve body.
5. butterfly valve according to claim 4, is characterized in that, described bar cover is one, is located at the center portion of the opposite side end face of spool, and valve rod is fixed two positioning blocks (7), bar cover clamped by two positioning blocks.
6. butterfly valve according to claim 4, described bar cover is two, is distributed on the opposite side end face of spool symmetrically, valve rod is fixed two positioning blocks (7), and two positioning blocks are also affixed with two bar covers respectively between two bar covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410474163.3A CN104565398B (en) | 2014-09-18 | 2014-09-18 | Wear-resistant sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410474163.3A CN104565398B (en) | 2014-09-18 | 2014-09-18 | Wear-resistant sealing butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104565398A true CN104565398A (en) | 2015-04-29 |
| CN104565398B CN104565398B (en) | 2017-01-25 |
Family
ID=53082146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410474163.3A Active CN104565398B (en) | 2014-09-18 | 2014-09-18 | Wear-resistant sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104565398B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060539A (en) * | 2021-12-21 | 2022-02-18 | 江苏华英阀业有限公司 | Ultra-high temperature flue butterfly valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006207759A (en) * | 2005-01-31 | 2006-08-10 | Kitz Corp | Valve body for butterfly valve, butterfly valve using the same and its manufacturing method |
| CN200968428Y (en) * | 2006-06-21 | 2007-10-31 | 兰州理工大学 | Reversible turning structure of butterfly valve butterfly plate |
| CN202132516U (en) * | 2011-05-31 | 2012-02-01 | 江苏特一机械股份有限公司 | Butterfly valve |
| CN202327139U (en) * | 2011-11-17 | 2012-07-11 | 浙江凯瑞特阀业有限公司 | Butterfly valve |
| CN203035972U (en) * | 2012-10-16 | 2013-07-03 | 天津市滨海新区塘沽诚帆精密铸造有限公司 | Waste gas treatment control valve capable of adjusting flow |
-
2014
- 2014-09-18 CN CN201410474163.3A patent/CN104565398B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006207759A (en) * | 2005-01-31 | 2006-08-10 | Kitz Corp | Valve body for butterfly valve, butterfly valve using the same and its manufacturing method |
| CN200968428Y (en) * | 2006-06-21 | 2007-10-31 | 兰州理工大学 | Reversible turning structure of butterfly valve butterfly plate |
| CN202132516U (en) * | 2011-05-31 | 2012-02-01 | 江苏特一机械股份有限公司 | Butterfly valve |
| CN202327139U (en) * | 2011-11-17 | 2012-07-11 | 浙江凯瑞特阀业有限公司 | Butterfly valve |
| CN203035972U (en) * | 2012-10-16 | 2013-07-03 | 天津市滨海新区塘沽诚帆精密铸造有限公司 | Waste gas treatment control valve capable of adjusting flow |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060539A (en) * | 2021-12-21 | 2022-02-18 | 江苏华英阀业有限公司 | Ultra-high temperature flue butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104565398B (en) | 2017-01-25 |
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| 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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170317 Address after: Jiangyan District 225509 of Jiangsu city in Taizhou province north of the city of Shen Gao Zhen Industrial Zone Patentee after: Jiangsu Jianghua Valve Co., Ltd. Address before: 225000 Guangling City, Jiangsu Province, Chaoyang District, room 14, Building 102, room Patentee before: Liu Qian |