CN205155175U - Butterfly valve - Google Patents

Butterfly valve Download PDF

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Publication number
CN205155175U
CN205155175U CN201520976620.9U CN201520976620U CN205155175U CN 205155175 U CN205155175 U CN 205155175U CN 201520976620 U CN201520976620 U CN 201520976620U CN 205155175 U CN205155175 U CN 205155175U
Authority
CN
China
Prior art keywords
valve
arm
butterfly
valve seat
positioning ring
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.)
Expired - Fee Related
Application number
CN201520976620.9U
Other languages
Chinese (zh)
Inventor
项光宽
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.)
Jiaxing Yayida Special Steel Casting Co Ltd
Original Assignee
Jiaxing Yayida Special Steel Casting Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiaxing Yayida Special Steel Casting Co Ltd filed Critical Jiaxing Yayida Special Steel Casting Co Ltd
Priority to CN201520976620.9U priority Critical patent/CN205155175U/en
Application granted granted Critical
Publication of CN205155175U publication Critical patent/CN205155175U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a butterfly valve. The structure of the disk seat among the prior art is unreasonable, and its elasticity is relatively poor, the butterfly valve during operation, and the disk seat is yielding, influences its sealing performance. The utility model provides a butterfly valve, including valve body, valve rod, dish board, position circle and disk seat, have cylindric fluid passage on the valve rod, the rotatable setting of dish board is in the fluid passage and control the fluid passage and open and close, the valve rod is worn to establish the valve body and is connected and controls the dish board and rotate its characterized in that with the dish board: the disk seat is the annular structure and is made by elastic material, be provided with the first arm and second arm on the disk seat, the first arm and second arm are sealed with the position circle cooperation respectively, one side of disk seat be provided with be used for with the dish flange along forming sealed composition surface. The utility model discloses simple structure, reasonable in design, sealing performance is good, and elasticity is good, long service life.

Description

Butterfly valve
Technical field
The utility model relates to a kind of butterfly valve, belongs to valve technology field.
Background technique
Butterfly valve is the simple modulating valve of a kind of structure, the butterfly valve that can be used for the switch control rule of low pressure pipeline medium refers to that closure member (flap or butterfly plate) is disk, rotate a kind of valve reaching open and close around valve shaft, valve can be used for the flowing controlling all kinds fluids such as air, water, steam, various Korrosionsmedium, mud, oil product, liquid metal and radiating medium.On pipeline, main rising is cut off and throttling action.Butterfly valve open-shut device is a discoidal butterfly plate, rotates in valve body around the axis of himself, thus reaches the object opening and closing or regulate.
Butterfly valve of the prior art comprises dish plate, valve body, positioning ring and valve seat, valve seat is common seal ring, valve seat is arranged between dish plate and valve body, and be fixed by positioning ring, the unreasonable structure of valve seat of the prior art, its elasticity is poor, during butterfly valve work, valve seat is yielding, affects its sealability.
Model utility content
The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of reasonable in design, good seal performance, the butterfly valve of long service life.
The technical scheme in the invention for solving the above technical problem is: this butterfly valve, comprise valve body, valve rod, dish plate, positioning ring and valve seat, described valve rod has cylindric fluid passage, dish plate is rotating to be arranged in fluid passage and to control fluid passage and open and close, described valve rod is fed through valve body and is connected with dish plate and controls dish plate and rotates, it is characterized in that: described valve seat structure being made up of elastic material in the form of a ring, described valve seat is provided with the first arm and the second arm, described first arm and the second arm respectively with positioning ring fitted seal, the side of described valve seat is provided with for forming with dish panel edges the mating face sealed.Valve body adopts the first arm and the second arm to complete the sealing with positioning ring, and its sealing effect is better, and this first arm and the second arm, compare solid construction, its elasticity is better, and valve seat pressurized more easily recovers, longer service life after reversing; During butterfly valve work, when fluid is from a side inflow of positioning ring, under the pressure of valve plate, valve seat moves axially along flow direction, and the junction plane of valve seat and the contact of valve plate are more tight, and sealability is better, when fluid flows into the other way around, valve plate pressurized and the trend had to valve seat movement, and valve seat is supported by positioning ring, the thus better tightness of valve seat and valve plate.
That position on valve seat described in the utility model between the first arm and the second arm is provided with spill and in the buckling groove of uncovered shape, described positioning ring has inserting section, lid inserting section is inserted buckling groove and is also played the role of positioning to valve seat.Inserting section inserts buckling groove, thus improves sealability further, the setting of buckling groove, makes valve seat entirety roughly C-shaped, this structure, and the seal ring that its elasticity compares solid construction is better, after extrusion-deformation, more easily recovers, thus not easily loses efficacy.
The width of buckling groove described in the utility model is increasing progressively on the direction of its open-mouth.Facilitate inserting section to insert buckling groove to coordinate, when inserting section is inserted, play partition effect to the first arm and the second arm, when the first arm or one of them compressive deformation of the second arm, another one is unaffected, and stability is better.
Second arm described in the utility model is provided with Stamping Steel Ribbon, and sealing bar is arranged along valve seat parallel direction, and described Stamping Steel Ribbon is pressed between valve seat and positioning ring.When positioning ring compresses, Stamping Steel Ribbon is pressed between positioning ring and valve body and seals, and can promote the sealing between positioning ring and valve body.
Valve seat described in the utility model is provided with in the side of the first arm the face of pushing against, described positioning ring has spacing section that the face of pushing against is played to position-limiting action.Spacing section can prevent valve seat excessive deformation.
The utility model also comprises cover plate and gland, and described valve rod two ends position installation respectively by cover plate and gland.
The utility model also comprises clamping bolt and butterfly spring, and described clamping bolt is fed through gland and is connected with valve body, and described butterfly spring is arranged between gland and clamping bolt and along the axial direction of valve rod and forces in gland, thus makes gland force in valve rod.Due to the setting of butterfly spring, after clamping bolt loosens, butterfly spring redeeming, valve rod, under the effect of butterfly spring, continues to keep original position, butterfly valve can be made normally to use.
The utility model compared with prior art, have the following advantages and effect: structure is simple, reasonable in design, valve body adopts the first arm and the second arm to complete the sealing with positioning ring, and its sealing effect is better, and this first arm and the second arm, compare solid construction, its elasticity is better, after valve seat pressurized reverses, more easily recover, longer service life; During butterfly valve work, when fluid is from a side inflow of positioning ring, under the pressure of valve plate, valve seat moves axially along flow direction, and the junction plane of valve seat and the contact of valve plate are more tight, and sealability is better, when fluid flows into the other way around, valve plate pressurized and the trend had to valve seat movement, and valve seat is supported by positioning ring, the thus better tightness of valve seat and valve plate.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the butterfly valve in the utility model embodiment.
Fig. 2 is the enlarged diagram at A place in Fig. 1.
Fig. 3 is the structural representation of valve body.
Fig. 4 is the enlarged diagram at B place in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.
Embodiment 1.
See Fig. 1 to Fig. 4, the butterfly valve of the present embodiment comprises valve seat 1, valve body 2, positioning ring 3, dish plate 4 and valve rod 5.
Valve rod 5 in the present embodiment has cylindric fluid passage, dish plate 4 is rotating to be arranged in fluid passage and to control fluid passage and open and close, valve rod 5 is fed through valve body 2 and is connected with dish plate 4 and controls dish plate 4 and rotates, valve seat 1 structure being made up of elastic material in the form of a ring, this elastic material can be the elastic material of the prior art such as metallic material, plastics, valve seat 1 is provided with the first arm 11 and the second arm 12, first arm 11 and the second arm 12 respectively with positioning ring 3 fitted seal, the side of valve seat 1 is provided with for forming with dish plate 4 edge the mating face 13 sealed.
First arm 11 and the second arm 12 with the fit system of positioning ring 3 are respectively: when butterfly valve is in closed condition, first arm 11 of valve seat 1 inserts the interior sealing of the first seal groove 31 of positioning ring 3, second arm 12 inserts the interior sealing of the second seal groove 32 of positioning ring 3, and junction plane 13 contacts with valve plate 4 and seals.
Valve body 2 adopts the first arm 11 and the second arm 12 to complete the sealing with positioning ring 3, and its sealing effect is better, and this first arm 11 and the second arm 12, compare solid construction, its elasticity is better, and valve seat 1 pressurized more easily recovers, longer service life after reversing; During butterfly valve work, when fluid is from a side inflow of positioning ring 3, under the pressure of valve plate, valve seat 1 moves axially along flow direction, and the junction plane of valve seat 1 and the contact of valve plate are more tight, and sealability is better, when fluid flows into the other way around, valve plate pressurized and the trend that has to valve seat 1 movement, and valve seat 1 is supported by positioning ring 3, the thus better tightness of valve seat 1 and valve plate.
Position on valve seat 1 in the present embodiment between the first arm 11 and the second arm 12 be provided with spill and in the buckling groove 14 of uncovered shape, positioning ring 3 has inserting section 33, lid inserting section 33 is inserted buckling groove 14 and is played the role of positioning to valve seat 1.Inserting section 33 inserts buckling groove 14, thus improves sealability further, the setting of buckling groove 14, make valve seat 1 cross section entirety roughly C-shaped, this structure, the seal ring that its elasticity compares solid construction is better, after extrusion-deformation, more easily recover, thus not easily lost efficacy.
The width of the buckling groove 14 in the present embodiment is increasing progressively on the direction of its open-mouth.Facilitate inserting section 33 to insert buckling groove 14 to coordinate, when inserting section 33 is inserted, play partition effect to the first arm 11 and the second arm 12, when the first arm 11 or second one of them compressive deformation of arm 12, another one is unaffected, and stability is better.
The second arm 12 in the present embodiment is provided with Stamping Steel Ribbon 121, and sealing bar 121 is arranged along valve seat 1 parallel direction, and Stamping Steel Ribbon 121 is pressed between valve seat 1 and positioning ring 3.When positioning ring 3 compresses, Stamping Steel Ribbon 121 is pressed between positioning ring 3 and valve body 2 and seals, and can promote the sealing between positioning ring 3 and valve body 2.
Valve seat 1 in the present embodiment being provided with the face of pushing against 15 in the side of the first arm 11, positioning ring 3 having spacing section 34 to pushing against 15 position-limiting actions in face.Valve seat 1 excessive deformation can be prevented for spacing section 34.
The present embodiment also comprises cover plate 6 and gland 7, and valve rod 5 two ends position installation respectively by cover plate 6 and gland 7.
The present embodiment also comprises clamping bolt 8 and butterfly spring 9, and clamping bolt 8 is fed through gland 7 and is connected with valve body 2, and butterfly spring 9 is arranged between gland 7 and clamping bolt 8 and along the axial direction of valve rod 5 and forces in gland 7, thus makes gland 7 force in valve rod 5.Due to the setting of butterfly spring 9, after clamping bolt 8 loosens, butterfly spring 9 redeeming, valve rod 5, under the effect of butterfly spring 9, continues to keep original position, butterfly valve can be made normally to use.The butterfly spring 9 at this place also can substitute with other elastic component.
Valve rod 5 in the present embodiment adopts to be prevented blowing structural design, and namely the top of valve rod 5 is hierarchic structure, valve rod 5 can be prevented to be blown because of unexpected fracture, damage accident.
Dish plate 4 in the present embodiment is eccentric design, and when valve opening, namely the dish plate 4 with bias design departs from valve body 2 fast, can reduce valve body 2 and the friction of dish plate 4, reduce the opening and closing moment of torsion of valve.Dish plate 4 is contactless after opening several angle with valve body 2 top and bottom, thus greatly improves the working life of valve body 2.The more two bias design of three eccentricity design has something and can make to reach zero friction between dish plate 4 and valve body 2, and has good cut-out performance and longer working life.
Above content described in this specification is only to the explanation of the utility model example.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from the content of the utility model specification or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.

Claims (7)

1. a butterfly valve, comprise valve body, valve rod, dish plate, positioning ring and valve seat, described valve rod has cylindric fluid passage, dish plate is rotating to be arranged in fluid passage and to control fluid passage and open and close, described valve rod is fed through valve body and is connected with dish plate and controls dish plate and rotates, it is characterized in that: described valve seat structure being made up of elastic material in the form of a ring, described valve seat is provided with the first arm and the second arm, described first arm and the second arm respectively with positioning ring fitted seal, the side of described valve seat is provided with for forming with dish panel edges the mating face sealed.
2. butterfly valve according to claim 1, it is characterized in that: the position on described valve seat between the first arm and the second arm be provided with spill and in the buckling groove of uncovered shape, described positioning ring has inserting section, and lid inserting section is inserted buckling groove and is played the role of positioning to valve seat.
3. butterfly valve according to claim 2, is characterized in that: the width of described buckling groove is increasing progressively on the direction of its open-mouth.
4. butterfly valve according to claim 1 and 2, is characterized in that: described second arm is provided with Stamping Steel Ribbon, and sealing bar is arranged along valve seat parallel direction, and described Stamping Steel Ribbon is pressed between valve seat and positioning ring.
5. butterfly valve according to claim 1 and 2, is characterized in that: described valve seat is provided with in the side of the first arm the face of pushing against, and described positioning ring has spacing section that the face of pushing against is played to position-limiting action.
6. butterfly valve according to claim 1 and 2, is characterized in that: also comprise cover plate and gland, and described valve rod two ends position installation respectively by cover plate and gland.
7. butterfly valve according to claim 6, it is characterized in that: also comprise clamping bolt and butterfly spring, described clamping bolt is fed through gland and is connected with valve body, described butterfly spring is arranged between gland and clamping bolt and along the axial direction of valve rod and forces in gland, thus makes gland force in valve rod.
CN201520976620.9U 2015-12-01 2015-12-01 Butterfly valve Expired - Fee Related CN205155175U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520976620.9U CN205155175U (en) 2015-12-01 2015-12-01 Butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520976620.9U CN205155175U (en) 2015-12-01 2015-12-01 Butterfly valve

Publications (1)

Publication Number Publication Date
CN205155175U true CN205155175U (en) 2016-04-13

Family

ID=55690869

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520976620.9U Expired - Fee Related CN205155175U (en) 2015-12-01 2015-12-01 Butterfly valve

Country Status (1)

Country Link
CN (1) CN205155175U (en)

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160413

Termination date: 20181201