CN110566678B - Soft sealing butterfly valve with triangular ring structure - Google Patents
Soft sealing butterfly valve with triangular ring structure Download PDFInfo
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- CN110566678B CN110566678B CN201910782974.2A CN201910782974A CN110566678B CN 110566678 B CN110566678 B CN 110566678B CN 201910782974 A CN201910782974 A CN 201910782974A CN 110566678 B CN110566678 B CN 110566678B
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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
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
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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
- F16K1/2268—Sealing means for the axis of rotation
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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
- F16K1/50—Preventing rotation of valve members
Abstract
The invention relates to a soft sealing butterfly valve with a triangular ring structure, which comprises a valve body, a valve seat and a disc plate, wherein the valve seat is of a circular structure, the valve body is arranged at the upper end of the valve seat, the disc plate is arranged in the valve seat, and the disc plate is fixedly connected with the lower end of the valve body. The butterfly valve can solve the problems that the sealing valve seat of the existing butterfly valve is usually made of plastic materials, but the sealing valve seat made of plastic materials is poor in elasticity, short in service life and low in use temperature and is only suitable for being used in a low-class environment, and when the existing butterfly valve is used, the air tightness between a disc plate and the valve seat is poor, the butterfly valve is seriously worn after being used for a long time, the sealing performance is low, the sealing effect is poor, the leakage phenomenon is easy to occur, the use effect is influenced, and the like.
Description
Technical Field
The invention relates to the field of butterfly valve sealing, in particular to a soft sealing butterfly valve with a triangular ring structure.
Background
The butterfly valve is also called as a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which has a closing member (a valve clack or a butterfly plate) as a disk and can rotate around a valve shaft to open and close; the butterfly valve is mainly characterized in that: small operating moment, small installation space and light weight.
At present, the existing butterfly valve usually has the following defects when being installed and used: 1. the sealing valve seat of the existing butterfly valve is usually made of plastic materials, but the sealing valve seat made of the plastic materials has poor elasticity, short service life and low use temperature and is only suitable for low-class environments; 2. when the existing butterfly valve is used, the air tightness between the disc plate and the valve seat is poor, the butterfly valve is seriously worn after long-time use, the sealing performance is low, the sealing effect is poor, the leakage phenomenon is easy to occur, and the using effect is influenced.
Disclosure of Invention
Technical problem to be solved
The butterfly valve can solve the problems that the sealing valve seat of the existing butterfly valve is usually made of plastic materials, but the sealing valve seat made of plastic materials is poor in elasticity, short in service life and low in use temperature and is only suitable for being used in a low-class environment, and the existing butterfly valve is poor in air tightness between a disc plate and the valve seat when in use, serious in abrasion of the butterfly valve after long-time use, low in sealing performance, poor in sealing effect, prone to generate leakage phenomenon, and influenced in use effect.
(II) technical scheme
In order to achieve the purpose, the invention adopts the following technical scheme that the soft sealing butterfly valve with the triangular ring structure comprises a valve body, a valve seat and a disc plate, wherein the valve seat is of a circular structure, the valve body is installed at the upper end of the valve seat, the disc plate is arranged in the valve seat, and the disc plate is fixedly connected with the lower end of the valve body.
The valve body include rolling disc, transmission case, mount, link, valve rod and sealing mechanism, disk seat upper end mid-mounting have the link, the mount is installed through the screw in the link upper end, the transmission case is installed to the mount upper end, install the rolling disc on the input of transmission case, install the valve rod on the output of transmission case, the valve rod middle part is connected with the link through sealing mechanism, the valve rod passes the bearing frame of disk seat and disk seat bottom and is connected, be located and install the dish board on the inside valve rod of disk seat, concrete during operation, the rolling disc drives the valve rod through the transmission case and rotates, the valve rod can realize opening and closing of butterfly valve by the dish board, sealing mechanism can guarantee the leakproofness between valve rod and the disk seat.
The disk seat include annular seat, ring groove, clamping ring, triangle circle and locking mechanism, annular seat on the terminal surface before be provided with ring groove, the inside clamping ring that is provided with of ring groove, the clamping ring is the loop configuration, the clamping ring passes through screw and annular seat fastening connection, install the triangle circle between clamping ring and the annular seat, the inside locking mechanism that is provided with of annular seat, concrete during operation, the triangle circle is made for rubber materials, when the pressurized, the rubber triangle circle can produce elastic deformation, make the triangle circle hug closely with the dish board, the leakproofness of butterfly valve has been improved, the triangle circle of rubber materials is high temperature resistant simultaneously, and be applicable to high pound level environment and use, locking mechanism can further guarantee the stability between disk seat and the dish board, guarantee the compactness of connecting.
The dish board include rotor plate, pneumatic mechanism and airtight mechanism, the rotor plate be circular structure, evenly be provided with pneumatic mechanism before the rotor plate on the terminal surface, the rotor plate outside evenly is provided with airtight mechanism, airtight mechanism is linked together with pneumatic mechanism, specific during operation, terminal surface atress before the pneumatic mechanism takes place deformation, pneumatic mechanism produces atmospheric pressure and drives airtight mechanism and seal the space between dish board and the disk seat, guarantees the gas tightness of butterfly valve.
The airtight mechanism comprises an air storage groove, an airtight pad and an airtight plate, the air storage groove is formed in the rotating plate and is communicated with a fixing groove, the airtight pad is symmetrically arranged on the rotating plate and is made of flexible rubber materials, the airtight pad is communicated with the air storage groove through a hose, the airtight plate is oppositely arranged in the annular seat, the airtight plate corresponds to the airtight pad in position, the airtight groove matched with the airtight pad is formed in the middle of the airtight plate, when the airtight mechanism works specifically, when air pressure changes due to stress of the airtight mechanism, air in the air storage groove drives the airtight pad to expand outwards, and the airtight pad and the airtight plate are fixed in a sealed mode.
As a preferred technical scheme of the invention, the sealing mechanism comprises a rotating sleeve, a fixed sleeve, a sealing ring and a lubricating layer, the rotating sleeve is mounted on the inner side of the upper end of the connecting frame through a bearing, a sealing groove is formed in the upper end of the inner part of the rotating sleeve, the sealing ring is mounted in the sealing groove, the fixed sleeve is mounted at the upper end of the rotating sleeve, the lubricating layer is arranged at the joint of the lower end of the inner part of the fixed frame and the valve rod, and the sealing ring can guarantee the connection tightness and prevent leakage during specific work.
According to a preferred technical scheme, the locking mechanism comprises an annular groove, a limiting plate, an expansion spring and a clamping block, the annular groove is formed in the annular seat, the limiting plate is connected to the interior of the annular groove in a sliding fit mode, the expansion spring is installed between the outer side of the limiting plate and the annular seat, the clamping block is installed on the inner side of the limiting plate, when the butterfly valve is closed in specific work, the clamping block moves outwards through the expansion spring and is clamped with a connecting groove in a disc plate, the disc plate is prevented from shaking, and the air tightness is good.
As a preferred technical scheme of the invention, the pneumatic mechanism comprises a pneumatic cushion, a top plate, a fixed groove, a piston rod and a connecting spring, wherein the front end of the rotating plate is uniformly provided with a mounting groove, the pneumatic cushion is mounted inside the mounting groove, the top plate is arranged at the rear end of the pneumatic cushion, the front end of the top plate is of an arc structure, the piston rod is mounted at the rear end of the top plate through a connecting rod, the connecting spring is arranged on the connecting rod, the piston rod is positioned in the fixed groove, the piston rod is hermetically connected with the fixed groove, the fixed groove is positioned on the rotating plate, the fixed groove is communicated with the mounting groove, when the front end surface of the disc plate is pressed, the piston rod is driven by pressure through the top plate to move inwards.
As a preferred technical scheme of the invention, the triangular ring is made of wear-resistant rubber material, the triangular ring is of an annular structure, the section of the triangular ring is of a triangular structure, and arc chamfers are arranged on the outer sides of the vertex angles of the triangle, so that the arc chamfers can ensure the air tightness of the connection among the triangular ring, the annular clamping groove and the pressing ring during specific work.
As a preferred technical scheme of the invention, a first groove is formed in the front end face of the annular clamping groove, a second groove is formed in the rear end face of the pressing ring, and the first groove and the second groove are respectively and tightly attached to the arc chamfer on the outer side of the triangular ring.
As a preferred technical scheme of the invention, the clamping block is of a circular ring structure, the clamping block and the disc plate are coaxial, and the outer side of the disc plate is provided with a connecting groove matched with the clamping block.
(III) advantageous effects
1. According to the soft sealing butterfly valve provided by the invention, the triangular ring is made of the wear-resistant rubber material, the wear-resistant effect is good, the service life is long, the soft sealing butterfly valve can adapt to a high-class environment, and meanwhile, the triangular ring made of the rubber material can generate elastic deformation, so that the triangular ring is tightly attached to the disc plate, and the sealing property of the butterfly valve is improved;
2. the soft sealing butterfly valve provided by the invention has the advantages that the air sealing mechanism can effectively ensure the sealing performance of the butterfly valve, the sealing performance is good, the wear resistance is high, the leakage phenomenon is not easy to occur, and the long-time use of the butterfly valve is facilitated.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a first partial schematic illustration of FIG. 2 in accordance with the present invention;
FIG. 4 is a second partial schematic of FIG. 2 in accordance with the present invention;
FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;
fig. 6 is an enlarged view of a portion of the invention at I in fig. 5.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 6, a soft sealing butterfly valve with a triangular ring structure comprises a valve body 1, a valve seat 2 and a disc plate 3, wherein the valve seat 2 is of a circular ring structure, the valve body 1 is installed at the upper end of the valve seat 2, the disc plate 3 is arranged inside the valve seat 2, and the disc plate 3 is fixedly connected with the lower end of the valve body 1.
The valve seat 2 comprises an annular seat 21, an annular clamping groove 22, a pressing ring 23, a triangular ring 24 and a locking mechanism 25, the annular clamping groove 22 is arranged on the front end face of the annular seat 21, the pressing ring 23 is arranged in the annular clamping groove 22, the pressing ring 23 is of an annular structure, the pressing ring 23 is fixedly connected with the annular seat 21 through screws, the triangular ring 24 is arranged between the pressing ring 23 and the annular seat 21, the locking mechanism 25 is arranged in the annular seat 21, a first groove 221 is arranged on the front end face of the annular clamping groove 22, a second groove 222 is arranged on the rear end face of the pressing ring 23, the first groove 221 and the second groove 222 are respectively and tightly attached to an arc chamfer on the outer side of the triangular ring 24, during specific work, the triangular ring 24 is made of rubber material, when the pressure is applied, the rubber triangular ring 24 can generate elastic deformation, so that the triangular ring 24 and the disc plate 3 can improve the sealing performance of the butterfly valve, and the triangular ring 24 made of rubber material, and be applicable to high pound level environment and use, locking mechanism 25 can further guarantee the stability between disk seat 2 and the dish board 3, guarantees the compactness of connecting.
The dish board 3 include rotor plate 31, pneumatic mechanism 32 and airtight mechanism 33, rotor plate 31 be circular structure, evenly be provided with pneumatic mechanism 32 before the rotor plate 31 on the terminal surface, the rotor plate 31 outside evenly is provided with airtight mechanism 33, airtight mechanism 33 is linked together with pneumatic mechanism 32, concrete during operation, terminal surface atress takes place to deform before the pneumatic mechanism 32, pneumatic mechanism 32 produces atmospheric pressure and drives airtight mechanism 33 and seal the space between dish board 3 and the disk seat 2, guarantees the gas tightness of butterfly valve.
The airtight mechanism 33 comprises an air storage tank 331, an airtight pad 332 and an airtight plate 333, the air storage tank 331 is arranged inside the rotating plate 31, the air storage tank 331 is communicated with the fixing groove 323, the airtight pad 332 is symmetrically arranged on the rotating plate 31, the airtight pad 332 is made of flexible rubber materials, the airtight pad 332 is communicated with the air storage tank 331 through a hose, the airtight plate 333 is arranged inside the annular seat 21, the airtight pad 333 corresponds to the airtight pad 332 in position, the airtight groove matched with the airtight pad 332 is arranged in the middle of the airtight pad 333, and when the airtight mechanism 32 is stressed to generate air pressure change during specific work, air inside the air storage tank 331 drives the airtight pad 332 to expand outwards, and the airtight pad 332 and the airtight pad 333 are sealed and fixed.
When the function of opening and closing the butterfly valve is realized: firstly, the rotating disc 11 is rotated manually, the rotating disc 11 drives the valve rod 15 to rotate through the transmission case 12, the valve rod 15 can realize the opening and closing of the butterfly valve by the disc plate 3, the sealing mechanism 16 can ensure the sealing performance between the valve rod 15 and the valve seat 2, then the triangular ring 24 is installed on the annular seat 21, the triangular ring 24 is made of rubber material, when the triangular ring 24 is pressed, the rubber triangular ring 24 can generate elastic deformation, so that the triangular ring 24 is tightly attached to the disc plate 3, the sealing performance of the butterfly valve is improved, meanwhile, the triangular ring 24 made of rubber material is high temperature resistant and is suitable for high-class environment, the locking mechanism 25 can further ensure the stability between the valve seat 2 and the disc plate 3 and ensure the connection tightness, then, the fixture block 254 in the locking mechanism 25 moves outwards through the expansion spring 253 to be clamped with the connection groove on the disc plate 3, and the disc plate 3 is prevented from shaking, the air tightness is good;
when the butterfly valve works, gas or liquid in the pipeline passes through the extrusion pressing mechanism 32, pressure generated by the gas pressing mechanism 32 drives the piston rod 324 to move inwards through the top plate 322, the piston rod 324 extrudes the gas in the gas storage tank 331, the gas in the gas storage tank 331 drives the gas seal pad 332 to expand outwards, and the gas seal pad 332 and the gas seal plate 333 are sealed and fixed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a soft seal butterfly valve of triangle circle structure, includes valve body (1), disk seat (2) and dish board (3), its characterized in that: the valve seat (2) is of a circular structure, the valve body (1) is mounted at the upper end of the valve seat (2), the disc plate (3) is arranged in the valve seat (2), and the disc plate (3) is fixedly connected with the lower end of the valve body (1); wherein:
the valve body (1) comprises a rotating disc (11), a transmission case (12), a fixing frame (13), a connecting frame (14), a valve rod (15) and a sealing mechanism (16), the connecting frame (14) is installed in the middle of the upper end of the valve seat (2), the fixing frame (13) is installed at the upper end of the connecting frame (14) through screws, the transmission case (12) is installed at the upper end of the fixing frame (13), the rotating disc (11) is installed at the input end of the transmission case (12), the valve rod (15) is installed at the output end of the transmission case (12), the middle of the valve rod (15) is connected with the connecting frame (14) through the sealing mechanism (16), the valve rod (15) penetrates through the valve seat (2) and is connected with a bearing seat at the bottom of the valve seat (2), and a disc plate (3) is installed on;
the valve seat (2) comprises an annular seat (21), an annular clamping groove (22), a pressing ring (23), a triangular ring (24) and a locking mechanism (25), wherein the annular clamping groove (22) is formed in the front end face of the annular seat (21), the pressing ring (23) is arranged in the annular clamping groove (22), the pressing ring (23) is of an annular structure, the pressing ring (23) is fixedly connected with the annular seat (21) through a screw, the triangular ring (24) is installed between the pressing ring (23) and the annular seat (21), and the locking mechanism (25) is arranged in the annular seat (21);
the disc plate (3) comprises a rotating plate (31), an air pressure mechanism (32) and an air sealing mechanism (33), the rotating plate (31) is of a circular structure, the air pressure mechanism (32) is uniformly arranged on the front end face of the rotating plate (31), the air sealing mechanism (33) is uniformly arranged on the outer side of the rotating plate (31), and the air sealing mechanism (33) is communicated with the air pressure mechanism (32);
the air-tight mechanism (33) comprises an air storage tank (331), an air-tight pad (332) and an air-tight plate (333), the air storage tank (331) is arranged in the rotating plate (31), the air storage tank (331) is communicated with the fixing groove (323), the air-tight pad (332) is symmetrically arranged on the rotating plate (31), the air-tight pad (332) is made of flexible rubber materials, the air-tight pad (332) is communicated with the air storage tank (331) through a hose, the air-tight plate (333) is oppositely arranged in the annular seat (21), the air-tight plate (333) corresponds to the air-tight pad (332), and the air-tight tank matched with the air-tight pad (332) is arranged in the middle of the air-tight plate (333);
pneumatic mechanism (32) including pneumatic pad (321), roof (322), fixed slot (323), piston rod (324) and coupling spring (325), rotor plate (31) front end evenly be provided with the mounting groove, mounting groove internally mounted has pneumatic pad (321), pneumatic pad (321) rear end is provided with roof (322), roof (322) front end is the arc structure, piston rod (324) are installed through the connecting rod to roof (322) rear end, be provided with coupling spring (325) on the connecting rod, piston rod (324) are located fixed slot (323), piston rod (324) and fixed slot (323) sealing connection, fixed slot (323) are located rotor plate (31), fixed slot (323) and mounting groove intercommunication.
2. The soft seal butterfly valve with the triangular ring structure of claim 1, wherein: sealing mechanism (16) including rotating cover (161), fixed cover (162), sealing washer (163) and lubricant film (164), link (14) upper end inboard install through the bearing and rotate cover (161), rotate the inside upper end of cover (161) and be provided with the seal groove, seal groove internally mounted has sealing washer (163), rotate cover (161) upper end and install fixed cover (162), the inside lower extreme of mount (13) is provided with lubricant film (164) with valve rod (15) junction.
3. The soft seal butterfly valve with the triangular ring structure of claim 1, wherein: locking mechanism (25) include ring channel (251), limiting plate (252), expanding spring (253) and fixture block (254), ring channel (251) inside be provided with, ring channel (251) inside is connected with limiting plate (252) through sliding fit's mode, install expanding spring (253) between limiting plate (252) outside and ring channel (21), fixture block (254) is installed to limiting plate (252) inboard.
4. The soft seal butterfly valve with the triangular ring structure of claim 1, wherein: triangle circle (24) make for wear-resisting rubber material, triangle circle (24) are the loop configuration, triangle-shaped circle (24) cross-section is the triangle-shaped structure, and triangle-shaped's apex angle outside all is provided with the circular arc chamfer.
5. The soft seal butterfly valve with the triangular ring structure of claim 1, wherein: a first groove (221) is formed in the front end face of the annular clamping groove (22), a second groove (222) is formed in the rear end face of the pressing ring (23), and the first groove (221) and the second groove (222) are tightly attached to an arc chamfer on the outer side of the triangular ring (24) respectively.
6. The soft seal butterfly valve with the triangular ring structure of claim 3, wherein: the clamping block (254) is of a circular structure, the clamping block (254) and the disc plate (3) are coaxial, and a connecting groove matched with the clamping block (254) is formed in the outer side of the disc plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910782974.2A CN110566678B (en) | 2019-08-23 | 2019-08-23 | Soft sealing butterfly valve with triangular ring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910782974.2A CN110566678B (en) | 2019-08-23 | 2019-08-23 | Soft sealing butterfly valve with triangular ring structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110566678A CN110566678A (en) | 2019-12-13 |
| CN110566678B true CN110566678B (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910782974.2A Active CN110566678B (en) | 2019-08-23 | 2019-08-23 | Soft sealing butterfly valve with triangular ring structure |
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| CN (1) | CN110566678B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6449774A (en) * | 1987-08-17 | 1989-02-27 | Fischer Ag Georg | Flap stop valve |
| US4854342A (en) * | 1988-09-14 | 1989-08-08 | Central Sprinkler Corporation | Clapper seal for dry pipe valve |
| CN101298886A (en) * | 2008-06-20 | 2008-11-05 | 浙江工业大学 | Eccentric expansion butterfly valve |
| CN203686176U (en) * | 2013-12-10 | 2014-07-02 | 温州市利普自控设备有限公司 | Butterfly valve with sealing clamping plate |
| CN104006173A (en) * | 2014-02-17 | 2014-08-27 | 中亚阀门有限公司 | Bidirectional sealing type butterfly valve |
| CN207093796U (en) * | 2017-08-15 | 2018-03-13 | 张金祥 | A kind of pneumatic rubber expansion butterfly valve |
| CN208010947U (en) * | 2018-03-07 | 2018-10-26 | 呼阀科技控股股份有限公司 | Triangle circle dual-seal butterfly valve |
| CN209146348U (en) * | 2018-11-26 | 2019-07-23 | 郑州金诚信筛网设备有限公司 | A kind of Pneumatic butterfly valve of high leakproofness |
-
2019
- 2019-08-23 CN CN201910782974.2A patent/CN110566678B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6449774A (en) * | 1987-08-17 | 1989-02-27 | Fischer Ag Georg | Flap stop valve |
| US4854342A (en) * | 1988-09-14 | 1989-08-08 | Central Sprinkler Corporation | Clapper seal for dry pipe valve |
| CN101298886A (en) * | 2008-06-20 | 2008-11-05 | 浙江工业大学 | Eccentric expansion butterfly valve |
| CN203686176U (en) * | 2013-12-10 | 2014-07-02 | 温州市利普自控设备有限公司 | Butterfly valve with sealing clamping plate |
| CN104006173A (en) * | 2014-02-17 | 2014-08-27 | 中亚阀门有限公司 | Bidirectional sealing type butterfly valve |
| CN207093796U (en) * | 2017-08-15 | 2018-03-13 | 张金祥 | A kind of pneumatic rubber expansion butterfly valve |
| CN208010947U (en) * | 2018-03-07 | 2018-10-26 | 呼阀科技控股股份有限公司 | Triangle circle dual-seal butterfly valve |
| CN209146348U (en) * | 2018-11-26 | 2019-07-23 | 郑州金诚信筛网设备有限公司 | A kind of Pneumatic butterfly valve of high leakproofness |
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|---|---|
| CN110566678A (en) | 2019-12-13 |
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