CN110307349A - A kind of anti-down streaming butterfly valve - Google Patents
A kind of anti-down streaming butterfly valve Download PDFInfo
- Publication number
- CN110307349A CN110307349A CN201910622582.XA CN201910622582A CN110307349A CN 110307349 A CN110307349 A CN 110307349A CN 201910622582 A CN201910622582 A CN 201910622582A CN 110307349 A CN110307349 A CN 110307349A
- Authority
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- China
- Prior art keywords
- valve body
- valve
- butterfly
- butterfly plate
- backflow preventing
- Prior art date
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- 241000826860 Trapezium Species 0.000 claims description 3
- 238000010992 reflux Methods 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
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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
- F16K1/224—Details of bearings 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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
- F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
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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
- F16K1/46—Attachment of sealing rings
-
- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
-
- 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
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
- F16K15/1821—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism for check valves with a hinged or pivoted closure 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Check Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
The present invention provides a kind of anti-down streaming butterfly valve, is related to butterfly valve field.The anti-down streaming butterfly valve, including valve body, the valve body is left and right perforation shape structure, valve body is internally provided with butterfly plate, butterfly plate is vertically arranged, the right side of butterfly plate is fixedly connected there are two fixed block, the inside fixation of two fixed blocks is plugged with shaft, one end that shaft is located at below two fixed blocks is plugged in the inner bottom wall of valve body and is rotatablely connected with valve body, shaft is located at one end above two fixed blocks and runs through valve body, the upper surface of valve body is fixedly connected with pivoted housing, one end that shaft is located above valve body is plugged on the inside of pivoted housing and is rotatablely connected with it, the left and right side of valve body is provided with return valve.The anti-down streaming butterfly valve has achieved the effect that not will cause liquid reflux when switching butterfly plate repeatedly, has solved the problems, such as that the butterfly valve of the prior art will appear reflux during long-time use and lead to valve damage by setting reflux valve plate and backflow preventing mouth plug.
Description
Technical field
The present invention relates to butterfly valve technical field, specially a kind of anti-down streaming butterfly valve.
Background technique
Butterfly valve is also known as flap valve, is a kind of simple regulating valve of structure, can be used for controlling empty gas and water, steam, various corruption
The flowing of the various types fluid such as corrosion medium, mud, oil product, liquid metal and radiating medium.Butterfly valve is main on pipeline
Play cutting and throttling action.The opening and closing element of butterfly valve is a discoidal butterfly plate (also referred to as dish valve), and dish plate is in valve body around it
The axis rotation of itself, to achieve the purpose that opening and closing or adjusting.
The butterfly valve of the prior art, since butterfly plate is repeatedly closed and opened, may result in during long-time use
Poorly sealed, such case will lead to a part of liquid there is a phenomenon where flowing backwards, the time grown the damage that will lead to valve and
The problem of Fail-closed.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of anti-down streaming butterfly valve, the butterfly valve of the prior art is solved in length
It will appear the problem of reflux leads to valve damage during time use.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of anti-down streaming butterfly valve, including valve body,
The valve body is left and right perforation shape structure, and valve body is internally provided with butterfly plate, and butterfly plate is vertically arranged, and the right side of butterfly plate is fixed to be connected
It connects there are two fixed block, the inside of two fixed blocks is fixed to be plugged with shaft, and shaft is located at one end below two fixed blocks and inserts
It connects in the inner bottom wall of valve body and is rotatablely connected with valve body, shaft is located at one end above two fixed blocks and runs through valve body, valve body
Upper surface be fixedly connected with pivoted housing, one end that shaft is located above valve body is plugged on the inside of pivoted housing and is rotatablely connected with it,
The left and right side of valve body is provided with return valve, and two return valves are left and right perforation shape structure, and two return valves are adjacent to each other
One side be plugged with several studs, several studs of the left and right sides far from one end of return valve respectively with the left and right of valve body
Flank threads connection, two return valves are connected to the inside of valve body, and the inside of two return valves is provided with baffle liner, and two are led
The one end of stream circle away from each other is fixedly connected with the inner wall of two return valves respectively, and the left and right side of butterfly plate is fixedly connected with hinged
Block is connect, the inside of two hinged blocks is provided with pull rod, and two pull rods are rotatablely connected with two hinged blocks respectively, and two pull rods are mutual
Mutually separate one end is provided with backflow preventing mouth plug, and two one end of pull rod far from butterfly plate are linked with two backflow preventing mouth plug rotations respectively, left and right
Two backflow preventing mouth plugs are located at the inside of two baffle liners in left and right, and the one end of two return valves away from each other is fixedly connected to method
Blue disk.
Preferably, it is provided with gasket between two return valves in the left and right ends of the valve body and left and right, gasket is annulus
Shape structure, gasket are arranged concentrically with valve body, and two gaskets are symmetrical set with the vertical center line of valve body.
Preferably, the equal fixing sleeve of the periphery of two backflow preventing mouth plugs is connected to rubber ring, the one end of rubber ring far from backflow preventing mouth plug with
Baffle liner contact, two backflow preventing mouth plugs are symmetrical set with the vertical centerline of butterfly plate, and the cross section of backflow preventing mouth plug is trapezium structure,
The diameter of less than two backflow preventing mouth plugs of diameter of two backflow preventing mouth plugs one end adjacent to each other one end away from each other.
Preferably, the cross section of the baffle liner is V-structure, and two baffle liners are with vertical centerline of butterfly plate or so pair
Claim setting, the diameter of less than two baffle liners of diameter of two baffle liners one end adjacent to each other one end away from each other.
Preferably, two pull rods are located at the rear and front end of butterfly plate side, and two pull rods are located on the same horizontal plane,
Two pull rods are with the equidistant circumference array distribution of the axial line of butterfly plate.
Preferably, the section of two return valves is circular configuration, and two return valves are with the vertical center line or so of valve body
It is symmetrical arranged.
(3) beneficial effect
The present invention provides a kind of anti-down streaming butterfly valves.Have it is following the utility model has the advantages that
1, the anti-down streaming butterfly valve, by setting return valve, baffle liner, pull rod, butterfly plate and backflow preventing mouth plug, when rotating shaft,
Butterfly plate starts turning under the rotation of shaft, drives pull rod mobile when butterfly plate rotates, the work that two pull rods are rotated in butterfly plate
Starting to move left and right under, further backflow preventing mouth plug initially moves off baffle liner under the drive of pull rod, the shaft of reverse rotation,
Backflow preventing mouth plug start under the action of pull rod it is close to the inside of baffle liner, due to baffle liner cross sectional shape be V-type, can be effective
Reduction liquid reflux, achieved the effect that repeatedly switch butterfly plate when not will cause liquid reflux, solve existing skill
The butterfly valve of art will appear the problem of reflux leads to valve damage during long-time use.
2, the anti-down streaming butterfly valve, by being arranged rubber ring, backflow preventing mouth plug under the drive of pull rod to baffle liner it is mobile when
Rubber ring is waited to start to contact with the inner wall of baffle liner, backflow preventing mouth plug can be contacted closely with baffle liner when tightening butterfly plate, this
Sample can guarantee that liquid reflux will not be generated when valve opening, and butterfly plate can also guarantee very when multiple close
Good leakproofness solves the butterfly valve of the prior art during long-time use since mechanical wear may result in butterfly valve
The problem of leakproofness declines.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is schematic diagram of internal structure of the present invention；
Fig. 3 is schematic structural view of the invention；
Fig. 4 is the connection schematic diagram of butterfly plate of the present invention and backflow preventing mouth plug.
Wherein, 1 valve body, 2 butterfly plates, 3 fixed blocks, 4 shafts, 5 pivoted housings, 6 return valves, 7 studs, 8 baffle liners, 9 hinged blocks, 10
Pull rod, 11 backflow preventing mouth plugs, 12 ring flanges, 13 gaskets, 14 rubber rings.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of anti-down streaming butterfly valve, and as shown in Figs 1-4, including valve body 1, valve body 1 are that left and right is passed through
Logical shape structure, valve body 1 are internally provided with butterfly plate 2, and butterfly plate 2 is vertically arranged, and the right side of butterfly plate 2 is fixedly connected with that there are two fixed
Block 3, the inside of two fixed blocks 3 is fixed to be plugged with shaft 4, and one end that shaft 4 is located at two fixed blocks, 3 lower section is plugged on valve body
It is rotatablely connected in 1 inner bottom wall and with valve body 1, valve body 1 is run through in one end that shaft 4 is located at two fixed blocks, 3 top, valve body 1
Upper surface is fixedly connected with pivoted housing 5, and pivoted housing 5 can play the role of fixed rotating shaft 4, and one end that shaft 4 is located at 1 top of valve body is inserted
It connects the inside in pivoted housing 5 and is rotatablely connected with it, the left and right side of valve body 1 is provided with return valve 6, section of two return valves 6
Face is circular configuration, and two return valves 6 are symmetrical set with the vertical center line of valve body 1, the left and right ends and a left side of valve body 1
Gasket 13 is provided between right two return valves 6, gasket 13 is annular structure, and gasket 13 is arranged concentrically with valve body 1, two
Gasket 13 is symmetrical set with the vertical center line of valve body 1, and gasket 13 can effectively prevent internal liquid leakage, and two are returned
Stream valve 6 is left and right perforation shape structure, and two return valves 6 one side adjacent to each other is plugged with several studs 7, the left and right sides
Several one end of stud 7 far from return valve 6 be threadedly coupled respectively with the left and right side of valve body 1, two return valves 6 and valve body
1 inside connection, the inside of two return valves 6 are provided with baffle liner 8, and the cross section of baffle liner 8 is V-structure, and two are led
Stream circle 8 is symmetrical set with the vertical centerline of butterfly plate 2, and the diameter of two baffle liners 8 one end adjacent to each other is less than two
The diameter of the one end away from each other of baffle liner 8, two baffle liners 8 one end adjacent to each other is located at the inside of valve body 1, two baffle liners
8 one end away from each other is fixedly connected with the inner wall of two return valves 6 respectively, and the left and right side of butterfly plate 2 is fixedly connected with hinged
Block 9 is connect, the inside of two hinged blocks 9 is provided with pull rod 10, and two pull rods 10 are located at the rear and front end of 2 side of butterfly plate,
Two pull rods 10 are located on the same horizontal plane, and two pull rods 10 are distributed with the equidistant circumference array of the axial line of butterfly plate 2, and two
Pull rod 10 is rotatablely connected with two hinged blocks 9 respectively, and the one end of two pull rods 10 away from each other is provided with backflow preventing mouth plug 11, and two only
The equal fixing sleeve of periphery for returning plug 11 is connected to rubber ring 14, and the one end of rubber ring 14 far from backflow preventing mouth plug 11 is contacted with baffle liner 8, and two
A backflow preventing mouth plug 11 is symmetrical set with the vertical centerline of butterfly plate 2, and the cross section of backflow preventing mouth plug 11 is trapezium structure, two non-returns
The diameter of less than two backflow preventing mouth plugs 11 of diameter of 11 one end adjacent to each other one end away from each other is filled in, two pull rods 10 are far from butterfly plate
2 one end is linked with two rotations of backflow preventing mouth plug 11 respectively, and two backflow preventing mouth plugs 11 in left and right are located at the interior of the baffle liner 8 of left and right two
Portion, the one end of two return valves 6 away from each other are fixedly connected to ring flange 12.
Working principle, when rotating shaft 4, butterfly plate 2 starts turning under the rotation of shaft 4, when butterfly plate 2 rotates
Drive pull rod 10 mobile, two pull rods 10 start to move left and right under the action of butterfly plate 2 rotates, and further backflow preventing mouth plug 11 exists
Initially move off baffle liner 8, the shaft 4 of reverse rotation under the drive of pull rod 10, backflow preventing mouth plug 11 start under the action of pull rod 10 to
The inside of baffle liner 8 is close, since the cross sectional shape of baffle liner 8 is V-type, can effectively reduce the reflux of liquid, backflow preventing mouth plug
11 start to contact with the inner wall of baffle liner 8 under the drive of pull rod 10 to rubber ring 14 when the movement of baffle liner 8, tighten butterfly plate
Backflow preventing mouth plug 11 can be contacted closely with baffle liner 8 when 2, can guarantee that liquid will not be generated when valve opening in this way
Reflux, and butterfly plate 2 can also guarantee good leakproofness when multiple close.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of anti-down streaming butterfly valve, including valve body (1), it is characterised in that: the valve body (1) is left and right perforation shape structure, valve
Body (1) is internally provided with butterfly plate (2), and butterfly plate (2) is vertically arranged, and the right side of butterfly plate (2) is fixedly connected there are two fixed block
(3), the inside fixation of two fixed blocks (3) is plugged with shaft (4), and shaft (4) is located at one end below two fixed blocks (3) and inserts
It connects in the inner bottom wall of valve body (1) and is rotatablely connected with valve body (1), one end that shaft (4) is located above two fixed blocks (3) is passed through
It wears valve body (1), the upper surface of valve body (1) is fixedly connected with pivoted housing (5), and one end that shaft (4) is located above valve body (1) is plugged on
The inside of pivoted housing (5) is simultaneously rotatablely connected with it, and the left and right side of valve body (1) is provided with return valve (6), two return valves (6)
It is left and right perforation shape structure, two return valve (6) one sides adjacent to each other are plugged with several studs (7), the left and right sides
Several studs (7) be threadedly coupled respectively with the left and right side of valve body (1) far from the one end of return valve (6), two return valves
(6) it is connected to the inside of valve body (1), the inside of two return valves (6) is provided with baffle liner (8), and two baffle liners (8) are mutual
Separate one end is fixedly connected with the inner wall of two return valves (6) respectively, and the left and right side of butterfly plate (2) is fixedly connected to hingedly
Block (9), the inside of two hinged blocks (9) are provided with pull rod (10), and two pull rods (10) rotate with two hinged blocks (9) respectively
Connection, the one end of two pull rods (10) away from each other are provided with backflow preventing mouth plug (11), the one end of two pull rods (10) far from butterfly plate (2)
It is linked respectively with two backflow preventing mouth plug (11) rotations, two backflow preventing mouth plugs (11) in left and right are located at the interior of the baffle liner (8) of left and right two
Portion, the one end of two return valves (6) away from each other are fixedly connected to ring flange (12).
2. a kind of anti-down streaming butterfly valve according to claim 1, it is characterised in that: the left and right ends of the valve body (1) with
It is provided with gasket (13) between two return valves (6) in left and right, gasket (13) is annular structure, gasket (13) and valve body (1)
It is arranged concentrically, two gaskets (13) are symmetrical set with the vertical center line of valve body (1).
3. a kind of anti-down streaming butterfly valve according to claim 1, it is characterised in that: the periphery of two backflow preventing mouth plugs (11) is equal
Fixing sleeve is connected to rubber ring (14), and rubber ring (14) is contacted far from the one end of backflow preventing mouth plug (11) with baffle liner (8), two backflow preventing mouth plugs
(11) it is symmetrical set with the vertical centerline of butterfly plate (2), the cross section of backflow preventing mouth plug (11) is trapezium structure, two backflow preventing mouth plugs
(11) diameter of less than two backflow preventing mouth plugs (11) of the diameter of one end adjacent to each other one end away from each other.
4. a kind of anti-down streaming butterfly valve according to claim 1, it is characterised in that: the cross section of the baffle liner (8) is V
Type structure, two baffle liners (8) are symmetrical set with the vertical centerline of butterfly plate (2), and two baffle liners (8) are adjacent to each other
The diameter of less than two baffle liners (8) of the diameter of one end one end away from each other.
5. a kind of anti-down streaming butterfly valve according to claim 1, it is characterised in that: two pull rods (10) are located at butterfly plate
(2) rear and front end of side, two pull rods (10) are located on the same horizontal plane, and two pull rods (10) are with the axle center of butterfly plate (2)
The equidistant circumference array distribution of line.
6. a kind of anti-down streaming butterfly valve according to claim 1, it is characterised in that: the section of two return valves (3) is
Circular configuration, two return valves (6) are symmetrical set with the vertical center line of valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910622582.XA CN110307349B (en) | 2019-07-11 | 2019-07-11 | Backflow-preventing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910622582.XA CN110307349B (en) | 2019-07-11 | 2019-07-11 | Backflow-preventing butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110307349A true CN110307349A (en) | 2019-10-08 |
| CN110307349B CN110307349B (en) | 2024-05-24 |
Family
ID=68081066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910622582.XA Active CN110307349B (en) | 2019-07-11 | 2019-07-11 | Backflow-preventing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110307349B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN121382927A (en) * | 2025-12-23 | 2026-01-23 | 福建艾唯特智能装备有限公司 | Double butterfly valve for wet concrete guniting machine |
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| CN208281518U (en) * | 2018-06-15 | 2018-12-25 | 重庆建安仪器有限责任公司 | Butterfly valve and butterfly valve system |
| CN109114232A (en) * | 2018-10-31 | 2019-01-01 | 石家庄三环阀门股份有限公司 | Two-way isolating valve, |
| CN209012443U (en) * | 2018-09-18 | 2019-06-21 | 无锡市爱德阀业有限公司 | Flux controllable butterfly valve |
| CN209012508U (en) * | 2018-09-18 | 2019-06-21 | 无锡市爱德阀业有限公司 | The butterfly valve of sediment prevention |
| CN210461717U (en) * | 2019-07-11 | 2020-05-05 | 无锡市爱德阀业股份有限公司 | Backflow prevention butterfly valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN121382927A (en) * | 2025-12-23 | 2026-01-23 | 福建艾唯特智能装备有限公司 | Double butterfly valve for wet concrete guniting machine |
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