CN110307349B - Backflow-preventing butterfly valve - Google Patents

Backflow-preventing butterfly valve Download PDF

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Publication number
CN110307349B
CN110307349B CN201910622582.XA CN201910622582A CN110307349B CN 110307349 B CN110307349 B CN 110307349B CN 201910622582 A CN201910622582 A CN 201910622582A CN 110307349 B CN110307349 B CN 110307349B
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CN
China
Prior art keywords
valve body
valve
butterfly
butterfly plate
pivot
Prior art date
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Active
Application number
CN201910622582.XA
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Chinese (zh)
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CN110307349A (en
Inventor
王利江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Ede Valve Industry Co ltd
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Wuxi Ede Valve Industry Co ltd
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Publication date
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Priority to CN201910622582.XA priority Critical patent/CN110307349B/en
Publication of CN110307349A publication Critical patent/CN110307349A/en
Application granted granted Critical
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Classifications

    • 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
    • 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
    • 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
    • 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
    • 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
    • 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 invention provides a backflow-preventing butterfly valve, and relates to the field of butterfly valves. This prevent butterfly valve of refluence, including the valve body, the valve body is for controlling and link up the column structure, the inside of valve body is provided with the butterfly plate, the butterfly plate sets up perpendicularly, the right flank fixedly connected with of butterfly plate has two fixed blocks, the inside fixed grafting of two fixed blocks has the pivot, the pivot is located the one end of two fixed blocks below and is pegged graft in the interior diapire of valve body and rotate with the valve body and be connected, the pivot is located the one end of two fixed blocks top and runs through the valve body, the upper surface fixedly connected with of valve body changes the cover, the pivot is located the one end of valve body top and peg graft in the inside of changeing the cover and rotate rather than to be connected, the side all is provided with the reflux valve about the valve body. This prevent butterfly valve of backward flow through setting up backward flow valve plate and non return stopper, can not cause the effect of liquid backward flow when having reached the repeatedly switching butterfly plate, has solved the butterfly valve of prior art and can appear the backward flow in the long-time in-process that uses and lead to the problem of valve damage.

Description

Backflow-preventing butterfly valve
Technical Field
The invention relates to the technical field of butterfly valves, in particular to a backflow-preventing butterfly valve.
Background
The butterfly valve is also called as a flap valve, and is a regulating valve with a simple structure, and can be used for controlling the flow of various fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. Butterfly valves mainly play a role in cutting off and throttling on pipelines. The opening and closing piece of the butterfly valve is a disc-shaped butterfly plate (also called a disc flap), and the disc plate rotates around the axis of the butterfly valve in the valve body, so that the purpose of opening and closing or adjusting is achieved.
In the process of using the butterfly valve for a long time, the butterfly plate is closed and opened for many times, so that sealing is possibly not tight, a phenomenon that a part of liquid flows backwards is caused under the condition, and the problems of valve damage and closing failure are caused for a long time.
Disclosure of Invention
(One) solving the technical problems
Aiming at the defects of the prior art, the invention provides a backflow-preventing butterfly valve, which solves the problem that the valve is damaged due to backflow in the long-time use process of the butterfly valve in the prior art.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a prevent reverse flow butterfly valve, which comprises a valve body, the valve body is left and right sides and link up the column structure, the inside of valve body is provided with the butterfly plate, the butterfly plate sets up perpendicularly, the right flank fixedly connected with two fixed blocks of butterfly plate, the inside fixed grafting of two fixed blocks has the pivot, the pivot is located the one end of two fixed blocks below and is pegged graft in the interior diapire of valve body and rotate with the valve body and be connected, the pivot is located the one end of two fixed blocks top and runs through the valve body, the last fixed surface of valve body is connected with the change cover, the pivot is located the one end of valve body top and peg graft in the inside of change cover and rotate rather than rotating to be connected, the side all is provided with the back flow valve about the valve, two back flow valves all are close to each other the one side and all peg graft and have a plurality of double-screw bolt, the one end that the back flow valve was kept away from to each other to a plurality of double-screw bolt about the side, the inside of two back flow valves and valve all is provided with the water conservancy diversion circle, the one end that two back flow rings kept away from each other is connected with the inner wall fixed connection of two back flow valves respectively, the two back flow rings are all is located the inside two articulated blocks of two back flow rings, two back flow rings are all kept away from each other, two inside two back flow rings are all are located the inside two articulated connection plugs are kept away from each other, two back flow rings are kept away from each other, two are connected with two is kept away from the one end to be connected with two back rings respectively.
Preferably, gaskets are arranged between the left end and the right end of the valve body and the left reflux valve and between the right end and the right reflux valve, the gaskets are of circular structures, the gaskets and the valve body are arranged concentrically, and the two gaskets are symmetrically arranged on the left side and the right side of the vertical center line of the valve body.
Preferably, the rubber ring has all been fixedly cup jointed to the periphery of two non return plugs, and the one end that the non return plug was kept away from to the rubber ring contacts with the water conservancy diversion circle, and two non return plugs set up with the vertical central line bilateral symmetry of butterfly plate, and the cross section of non return plug is trapezium structure, and the diameter of the one end that two non return plugs are close to each other is less than the diameter of one end that two non return plugs kept away from each other.
Preferably, the cross section of the guide ring is of a V-shaped structure, the two guide rings are symmetrically arranged on the left and right sides of the vertical center line of the butterfly plate, and the diameter of one end, close to each other, of the two guide rings is smaller than the diameter of one end, far away from each other, of the two guide rings. .
Preferably, the two pull rods are respectively positioned at the front end and the rear end of the side surface of the butterfly plate, the two pull rods are positioned on the same horizontal plane, and the two pull rods are distributed in an equidistant circumferential array with the axis of the butterfly plate.
Preferably, the sections of the two reflux valves are of circular structures, and the two reflux valves are symmetrically arranged on the left and right sides of the vertical center line of the valve body.
(III) beneficial effects
The invention provides a backflow-preventing butterfly valve. The beneficial effects are as follows:
1. This prevent butterfly valve of refluence, through setting up the return valve, the water conservancy diversion circle, the pull rod, butterfly plate and non return stopper, when rotatory pivot, the butterfly plate begins to rotate under the rotation of pivot, the butterfly plate drives the pull rod and removes when rotating, two pull rods begin to left and right sides and remove under the pivoted effect of butterfly plate, further non return stopper begins to leave the water conservancy diversion circle under the drive of pull rod, the pivot of reverse rotation, the non return stopper begins to be close to the inside of water conservancy diversion circle under the effect of pull rod, because the cross-sectional shape of water conservancy diversion circle is the V type, can effectually reduce the backward flow of liquid, can not cause the effect of liquid backward flow when having reached the repeatedly switching butterfly plate, the problem that the butterfly valve of prior art can appear backward flow and lead to the valve damage in the in-process of using for a long time has been solved.
2. This prevent butterfly valve of refluence, through setting up the rubber ring, the rubber ring begins when the stopper removes to the water conservancy diversion circle under the drive of pull rod and contacts with the inner wall of water conservancy diversion circle, and the stopper can be inseparable when screwing up the butterfly plate contacts with the water conservancy diversion circle, can guarantee like this that can not produce the liquid backward flow when the valve is opened to the butterfly plate can also guarantee fine leakproofness when closing many times, has solved the butterfly valve of prior art and can lead to the problem that butterfly valve leakproofness descends because of mechanical wear in the in-process that uses for a long time.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the internal structure of the present invention;
FIG. 3 is a schematic diagram of the structure of the present invention;
FIG. 4 is a schematic illustration of the connection of the butterfly plate to the check plug of the present invention.
The valve comprises a valve body 1, a butterfly plate 2, a fixed block 3, a rotating shaft 4, a rotating sleeve 5, a reflux valve 6, a stud 7, a guide ring 8, a hinging block 9, a pull rod 10, a check plug 11, a flange plate 12, a gasket 13 and a rubber ring 14.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a backflow-preventing butterfly valve, as shown in figures 1-4, which comprises a valve body 1, wherein the valve body 1 is of a left-right through structure, a butterfly plate 2 is arranged in the valve body 1, the butterfly plate 2 is vertically arranged, two fixed blocks 3 are fixedly connected to the right side surface of the butterfly plate 2, a rotating shaft 4 is fixedly inserted in the interiors of the two fixed blocks 3, one end of the rotating shaft 4 below the two fixed blocks 3 is inserted in the inner bottom wall of the valve body 1 and is rotationally connected with the valve body 1, one end of the rotating shaft 4 above the two fixed blocks 3 penetrates through the valve body 1, a rotating sleeve 5 is fixedly connected to the upper surface of the valve body 1, the rotating sleeve 5 can play a role of fixing the rotating shaft 4, one end of the rotating shaft 4 above the valve body 1 is inserted in the rotating sleeve 5 and is rotationally connected with the rotating sleeve 5, reflux valves 6 are respectively arranged on the left side surface and the right side surface of the valve body 1, the sections of the two reflux valves 6 are of circular structures, the two reflux valves 6 are symmetrically arranged left and right by the vertical center line of the valve body 1, gaskets 13 are arranged between the left end and the right end of the valve body 1 and the left reflux valve 6 and the right reflux valve 6, the gaskets 13 are of ring-shaped structures, the gaskets 13 are concentrically arranged with the valve body 1, the two gaskets 13 are symmetrically arranged left and right by the vertical center line of the valve body 1, the gaskets 13 can effectively prevent internal liquid leakage, the two reflux valves 6 are of left and right through structures, one surfaces of the two reflux valves 6, which are close to each other, are respectively inserted with a plurality of studs 7, one ends of the studs 7, which are far from the reflux valves 6, are respectively connected with the left side surface and the right side surface of the valve body 1 in a threaded manner, the two reflux valves 6 are communicated with the inside of the valve body 1, guide rings 8 are respectively arranged in the two reflux valves 6, the cross sections of the guide rings 8 are of V-shaped structures, the two guide rings 8 are symmetrically arranged left and right by the vertical center line of the butterfly plate 2, the diameter of the end that two water conservancy diversion circles 8 are close to each other is less than the diameter of the end that two water conservancy diversion circles 8 kept away from each other, the one end that two water conservancy diversion circles 8 are close to each other is located the inside of valve body 1, the one end that two water conservancy diversion circles 8 kept away from each other respectively with the inner wall fixed connection of two backflow valves 6, the equal fixedly connected with hinged block 9 of side about butterfly plate 2, the inside of two hinged block 9 all is provided with pull rod 10, two pull rod 10 are located the front and back both ends of butterfly plate 2 side respectively, two pull rod 10 are located same horizontal plane, two pull rod 10 are distributed with the axial lead equidistance circumference array of butterfly plate 2, two pull rod 10 respectively with two hinged block 9 rotation connection, the one end that two pull rod 10 kept away from each other is provided with the check 11, the circumference of two check 11 has all fixedly cup jointed rubber ring 14, the one end that the check 11 was kept away from to the rubber ring 14 contacts with water conservancy diversion circles 8, two check 11 are located the vertical center line bilateral symmetry of butterfly plate 2, the cross section of check 11 is trapezium structure, the diameter that two check 11 are close to each other's one end is less than two check ring 11 are located the inside that two water conservancy diversion circles 2 are kept away from each other respectively, two check ring 11 are kept away from each other by two flange 8 rotation ends are kept away from each other, two the inside of two check ring 12 are kept away from each other.
The theory of operation, when rotatory pivot 4, butterfly plate 2 begins to rotate under the rotation of pivot 4, drive pull rod 10 when butterfly plate 2 rotates and remove, two pull rods 10 begin to move left and right under butterfly plate 2 pivoted effect, further non return stopper 11 begins to leave water conservancy diversion circle 8 under the drive of pull rod 10, rotatory pivot 4 in opposite direction, non return stopper 11 begins to be close to the inside of water conservancy diversion circle 8 under the effect of pull rod 10, because the cross-sectional shape of water conservancy diversion circle 8 is the V type, can effectually reduce the backward flow of liquid, rubber ring 14 begins to contact with the inner wall of water conservancy diversion circle 8 when the non return stopper 11 moves to water conservancy diversion circle 8 under the drive of pull rod 10, non return stopper 11 can be inseparable and water conservancy diversion circle 8 contact when screwing up butterfly plate 2, can guarantee like this can not produce liquid backward flow when the valve is opened, and fine leakproofness can also be guaranteed when the butterfly plate 2 closes many times.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides a prevent butterfly valve of refluence, includes valve body (1), its characterized in that: the utility model discloses a valve body (1) is for controlling link-up column structure, the inside of valve body (1) is provided with butterfly plate (2), butterfly plate (2) perpendicular setting, the right flank fixedly connected with two fixed blocks (3) of butterfly plate (2), the inside fixed grafting of two fixed blocks (3) has pivot (4), pivot (4) are located the one end grafting of two fixed blocks (3) below in the inner diapire of valve body (1) and rotate with valve body (1) and be connected, pivot (4) are located the one end of two fixed blocks (3) top and run through valve body (1), the upper surface fixedly connected with of valve body (1) changes cover (5), pivot (4) are located the one end grafting of valve body (1) top in the inside of changeing cover (5) and rotate with it and be connected, the left and right flank of valve body (1) all is provided with backflow valve (6), two backflow valve (6) are all for controlling link-up column structure, the one end that two backflow valve (6) are close to each other peg graft and have a plurality of double-screw bolt (7), the one end that the backflow valve (7) of left and right sides keep away from inside (6) of valve body (1) respectively, backflow valve (8) are connected with the inside of two screw thread (6) respectively, one end that two water conservancy diversion circles (8) kept away from each other is respectively with the inner wall fixed connection of two flow guiding rings (6), the equal fixedly connected with hinge block (9) of left and right sides face of butterfly plate (2), the inside of two hinge blocks (9) all is provided with pull rod (10), two pull rod (10) rotate with two hinge block (9) respectively and are connected, the one end that two pull rod (10) kept away from each other is provided with check plug (11), the one end that two pull rod (10) kept away from butterfly plate (2) links with two check plug (11) rotation respectively, the one end that two check plugs (11) are located respectively about the inside of two water conservancy diversion circles (8), the equal fixedly connected with ring flange (12) of one end that two flow guiding rings (6) kept away from each other, the circumference face of two check plugs (11) all fixedly cup joints rubber ring (14), the one end that check plug (11) were kept away from to rubber ring (14) contacts with water conservancy diversion circle (8), the vertical central line bilateral symmetry setting of two check plugs (11) with the vertical central line of butterfly plate (2), the cross-section of two cross-section structures that cross-section diameters of two butterfly plates (11) are kept away from each other is the one end that two cross-section diameters of two water conservancy diversion circles (8) are the cross-section of two cross-section structures that are kept away from each other (8) and are the cross-section of two water conservancy diversion circles (8, the diameter of the end of the two guide rings (8) close to each other is smaller than the diameter of the end of the two guide rings (8) far away from each other.
2. A backflow prevention butterfly valve according to claim 1, wherein: gaskets (13) are arranged between the left end and the right end of the valve body (1) and the left reflux valve and the right reflux valve (6), the gaskets (13) are of annular structures, the gaskets (13) and the valve body (1) are concentrically arranged, and the two gaskets (13) are symmetrically arranged on the left side and the right side of the vertical center line of the valve body (1).
3. A backflow prevention butterfly valve according to claim 1, wherein: the two pull rods (10) are respectively positioned at the front end and the rear end of the side surface of the butterfly plate (2), the two pull rods (10) are positioned on the same horizontal plane, and the two pull rods (10) are distributed in an equidistant circumferential array with the axis of the butterfly plate (2).
4. A backflow prevention butterfly valve according to claim 1, wherein: the sections of the two reflux valves (6) are of circular structures, and the two reflux valves (6) are symmetrically arranged on the left and right sides of the vertical center line of the valve body (1).
CN201910622582.XA 2019-07-11 2019-07-11 Backflow-preventing butterfly valve Active CN110307349B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910622582.XA CN110307349B (en) 2019-07-11 2019-07-11 Backflow-preventing butterfly valve

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Application Number Priority Date Filing Date Title
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CN110307349A CN110307349A (en) 2019-10-08
CN110307349B true CN110307349B (en) 2024-05-24

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