CN105508634B - A kind of bidirectional metal hard-sealing butterfly valve - Google Patents
A kind of bidirectional metal hard-sealing butterfly valve Download PDFInfo
- Publication number
- CN105508634B CN105508634B CN201610027142.6A CN201610027142A CN105508634B CN 105508634 B CN105508634 B CN 105508634B CN 201610027142 A CN201610027142 A CN 201610027142A CN 105508634 B CN105508634 B CN 105508634B
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- CN
- China
- Prior art keywords
- valve
- butterfly
- sealing ring
- butterfly plate
- sealing
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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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
- F16K1/42—Valve seats
- F16K1/427—Attachment of the seat to the housing by one or more additional fixing elements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The present invention relates to valve arrangement technical field, discloses a kind of bidirectional metal hard-sealing butterfly valve.The bidirectional metal hard-sealing butterfly valve includes valve body, valve seat, butterfly plate, valve shaft, and the internal chamber wall of valve body is provided with valve seat gland, and valve body forms the first groove with valve seat gland, and valve seat is located in the first groove, and the first gap is formed between valve seat and the first groove；Butterfly plate is provided with sealing ring pressing plate, and butterfly plate forms the second groove with sealing ring pressing plate, the double "T"-shaped butterfly plate sealing rings for being engaged with the sealing surface of valve seat and forming sealing pair are provided with the second groove；The fixing end of butterfly plate sealing ring is fixedly connected with the second groove；The side of the sealed end of butterfly plate sealing ring is contacted with butterfly plate, and the second gap is formed between opposite side and sealing ring pressing plate.The bidirectional metal hard-sealing butterfly valve of the present invention is by the cooperation of relocatable valve seat and butterfly plate sealing ring, and two way seal effect is reliable, the occasion of particularly suitable two way seal.
Description
Technical field
The present invention relates to valve arrangement technical field, in particular it relates to a kind of bidirectional metal hard-sealing butterfly valve.
Background technology
Butterfly valve refers to that opening and closing element (butterfly plate) is disk, is rotated in valve body around the axis of its own, opens and closes to reach
A kind of valve closed, it is main on pipeline to play cut-out and throttling action.Butterfly valve due to it is simple in construction, price is low, conveniently opening and closing is extensive
Transfer pipeline applied to every profession and trade.With the continuous construction of China's long distance line conveying engineering, high-rise building, supplying drainage
The transformation on road, higher requirement is proposed to the sealing property of butterfly valve, can either ensure that forward condition seals, also to ensure reversely
State seals.
Butterfly valve seal pair is line contact sealing, and the elastic deformation caused by metal seat valve sealing ring is extruded by butterfly plate produces
Sealing effectiveness.When pressure medium acts on, if valve seat insert deflection is uneven or smaller, there may be butterfly plate and valve seat
Depart from or the seal pressure between butterfly plate and valve seat insert is insufficient, cause seal failure.
Butterfly valve and valve shaft do not have self-lock ability in itself, in order to butterfly plate be positioned to install worm reducer additional on valve shaft.Adopt
It with worm reducer, can not only make butterfly plate that there is self-lock ability, butterfly plate is stopped at an arbitrary position, moreover it is possible to improve valve
Operating characteristics.However, certain processing or rigging error all be present in the cooperation between the processing of metallic element and parts, this
So that there is certain error under the effect of high pressure medium leakage accident also easily occurs for the cooperation of butterfly plate and valve base chamber.
The content of the invention
Present invention solves the technical problem that the defects of being to overcome prior art, there is provided a kind of simple and reliable for structure, sealing
The good bidirectional metal hard-sealing butterfly valve of effect.
The object of the invention is achieved through the following technical solutions：
A kind of bidirectional metal hard-sealing butterfly valve, including valve body, valve seat, butterfly plate, valve shaft, the internal chamber wall of the valve body are provided with
Valve seat gland, the valve body form the first groove with valve seat gland, and the valve seat is located in the first groove, the valve seat and first
The first gap is formed between groove；The sealing surface of the valve seat is towards the inclined-plane of valve shaft；
The butterfly plate is provided with sealing ring pressing plate, and the butterfly plate forms the second groove with sealing ring pressing plate, and described second is recessed
The double "T"-shaped butterfly plate sealing rings for being engaged with the sealing surface of valve seat and forming sealing pair are provided with groove；The butterfly plate sealing ring
Fixing end is fixedly connected with the second groove；The side of the sealed end of the butterfly plate sealing ring contacts with butterfly plate, opposite side and sealing
The second gap is formed between circle pressing plate；The sealing surface of the butterfly plate sealing ring is away from the inclined-plane of valve shaft.Further, the butterfly
The fixing end and sealed end of plate sealing ring form approximate Double " T " shape structure.
The first gap between valve seat of the present invention and the first groove be present, valve seat can be in the axle of the first groove interior edge valve body
To or move radially.The second gap, which is formed, between the butterfly plate sealing ring and sealing ring pressing plate provides deformation for butterfly plate sealing ring
Space.When the bidirectional metal hard-sealing butterfly valve contract fully, liquid applies pressure effect from forward direction to valve seat and butterfly plate so that
Valve seat and butterfly plate move forward, and valve seat props up valve seat gland, and hydraulically full in the first gap, the pressure of liquid is further to valve seat
Apply pressure, the seal pressure of increase valve seat and valve seat gland.Meanwhile butterfly plate sealing ring under the pressure effect of liquid to antecurvature
Song deformation, the sealing surface of butterfly plate sealing ring further press to the sealing surface of valve seat, increased between butterfly plate sealing ring and valve seat
Seal pressure.When liquid to valve seat and butterfly plate from reversely pressure effect is applied, the butterfly plate sealing ring contacts with butterfly plate to be avoided
Butterfly plate sealed ring deformation, the valve seat is moved rearwards to be contacted to form sealing pair with butterfly plate sealing ring.It is full of in first gap
Liquid, the pressure of liquid further apply pressure, the seal pressure of increase valve seat and butterfly plate sealing ring to valve seat, and valve more closes more
It is tight to obtain better seal effect.The first gap between first groove and valve seat can effectively make up valve shaft and butterfly plate along valve
The error of body radial direction plays good sealing effectiveness.The movement of valve seat and butterfly plate of the present invention and the deformation of butterfly plate sealing ring make valve
Door realizes two way seal.
In order to increase seal pressure, further, first gap is connected with body cavity.Liquid in body cavity
Body applies pressure full of the first gap and then to valve seat.
In order to further increase the pressure that liquid applies to valve seat, further, the side wall of the first groove and/or with first
The valve seat wall that the side wall of groove coordinates is provided with the 3rd groove, and the 3rd groove connects with the first gap.
Further, the valve seat is provided with the sealing ring coordinated with valve body；The fixing end of the butterfly plate sealing ring be provided with
The sealing ring that butterfly plate and/or sealing ring pressing plate coordinate.The butterfly plate sealing ring is provided with least two sealing rings.
Further, the side of the sealed end of the butterfly plate sealing ring is provided with recess.The female portion can be easy to seal
Hold the deformation that bends.Two sides of the sealed end are arranged with recess.
Further, two ends of the sealed end of the butterfly plate sealing ring are equipped with recess.The butterfly plate sealing
The fixing end and sealed end of circle form approximate Double " T " shape structure.
Further, the thickness a of the fixing end of the butterfly plate sealing ring is more than sealed end；The butterfly plate is provided with and fixing end
The 4th groove coordinated.4th groove coordinates with fixing end, effectively limits the displacement of butterfly plate sealing ring.
Further, the thickness b of the 4th groove is less than the thickness a of the fixing end of butterfly plate sealing ring.So that butterfly plate is close
The fixing end of seal is protruded from the 4th groove, sealing ring pressing plate and fixed end in contact, effective fixed butterfly plate sealing ring.
Further, the section of the valve seat gland is " L " shape, simple and reliable for structure.
In order to reduce valve shaft moving along valve body axial direction, further, the both ends of the valve shaft are connected by bearing and valve body
Connect.
Further, the bottom of the valve shaft is provided with planar pad, and the other end of the valve shaft is provided with closure.Effectively subtract
Valve shaft and butterfly plate moving along valve body radial direction are lacked, and there is good sealing effectiveness.
Valve seat, the butterfly plate sealing ring of the present invention is metal material, and two-way hard seal can be achieved, be bidirectional metal hard-sealing butterfly
Valve.
Compared with prior art, the invention has the advantages that：
The fit system of the valve seat and the first groove so that valve seat can axially or radially moving along valve body, meet double
To the demand sealed firmly.The butterfly plate ring structure is novel in design, and coordinating with butterfly plate and valve seat can reach effective two-way hard
Sealing effectiveness.
Bidirectional metal hard-sealing butterfly valve of the present invention is two-way close by the cooperation of relocatable valve seat and butterfly plate sealing ring
It is reliable to seal effect, the occasion of particularly suitable two way seal.
Brief description of the drawings
Fig. 1 is the structural representation of the bidirectional metal hard-sealing butterfly valve；
Fig. 2 is the partial enlarged drawing at A positions shown in Fig. 1；
Fig. 3 is the structural representation of butterfly plate, butterfly plate sealing ring and sealing ring pressing plate；
Fig. 4 is the structural representation of the butterfly plate sealing ring；
Fig. 5 is the partial enlarged drawing at B positions shown in Fig. 1；
Fig. 6 is the partial enlarged drawing at C positions shown in Fig. 1；
Fig. 7 is the A positions partial enlarged drawing of embodiment 2.
Embodiment
With reference to embodiment, the present invention is further illustrated.Wherein, being given for example only property of accompanying drawing illustrates,
What is represented is only schematic diagram, rather than pictorial diagram, it is impossible to is interpreted as the limitation to this patent；In order to which the reality of the present invention is better described
Example is applied, some parts of accompanying drawing have omission, zoomed in or out, and do not represent the size of actual product；To those skilled in the art
For, some known features and its explanation may be omitted and will be understood by accompanying drawing.
Embodiment 1
As shown in figs. 1 to 6, a kind of bidirectional metal hard-sealing butterfly valve, including valve body 1, valve seat 2, butterfly plate 3, valve shaft 4.Valve body 1
Internal chamber wall be provided with valve seat gland 11, valve body 1 forms the first groove 12 with valve seat gland 11.Valve seat 2 is located at the first groove 12
In, form the first gap 21 between the groove 12 of valve seat 2 and first.The sealing surface of valve seat 2 is towards the inclined-plane of valve shaft 4.
Butterfly plate 3 is provided with sealing ring pressing plate 31, and butterfly plate 3 forms the second groove 32 with sealing ring pressing plate 31.Second groove 32
It is interior to be provided with the double "T"-shaped butterfly plate sealing rings 33 for being engaged with the sealing surface of valve seat 2 and forming sealing pair.Butterfly plate sealing ring 33 is consolidated
Fixed end 331 is fixedly connected with the second groove 32.The side of the sealed end 332 of butterfly plate sealing ring 33 contacts with butterfly plate 3, opposite side with
The second gap 34 is formed between sealing ring pressing plate 31.The sealing surface of butterfly plate sealing ring 33 is away from the inclined-plane of valve shaft 4.
The first gap 21 between the groove 12 of valve seat 2 and first be present, valve seat 2 can be in the axle of the interior edge valve body 1 of the first groove 12
To or move radially.The second gap 34 is formed between butterfly plate sealing ring 33 and sealing ring pressing plate 31 to provide for butterfly plate sealing ring 33
Deformation space.When bidirectional metal hard-sealing butterfly valve contract fully, liquid applies pressure effect from forward direction to valve seat 2 and butterfly plate 3, makes
Valve seat 2 and butterfly plate 3 move forward, valve seat 2 props up valve seat gland 11, and hydraulically full in the first gap 21, the pressure of liquid is entered
One step applies pressure, the seal pressure of increase valve seat 2 and valve seat gland 11 to valve seat 2.Meanwhile butterfly plate sealing ring 33 is in liquid
Flexural deformation forward under pressure effect, the sealing surface of butterfly plate sealing ring 33 further press to the sealing surface of valve seat 2, increase butterfly plate
Seal pressure between sealing ring 33 and valve seat 2.When liquid to valve seat 2 and butterfly plate 3 from reversely pressure effect is applied, butterfly plate seals
Circle 33 contacts with butterfly plate 3 to be avoided butterfly plate sealing ring 22 and deforms.Valve seat 2, which is moved rearwards, contacts formation sealing with butterfly plate sealing ring 33
It is secondary.Hydraulically full in first gap 21, the pressure of liquid further applies pressure, increase valve seat 2 and butterfly plate sealing ring to valve seat 2
33 seal pressure, valve the more close the more tight and obtain better seal effect.The first gap 21 between first groove 12 and valve seat 2
The error of valve shaft 4 and butterfly plate 3 along the radial direction of valve body 1 can effectively be made up and play good sealing effectiveness.The movement of valve seat 2 and butterfly plate 3
And the deformation of butterfly plate sealing ring 33 makes valve realize two way seal.
In order to increase seal pressure, the first gap 21 is connected with body cavity.Liquid in body cavity is full of first
Gap 21 so to valve seat 2 apply pressure.
Valve seat 2 is provided with the sealing ring 5 coordinated with valve body 1.The fixing end 331 of butterfly plate sealing ring 33 is provided with and butterfly plate 3 and close
The sealing ring 5 that seal pressing plate 31 coordinates.
Two sides of the sealed end 332 of butterfly plate sealing ring 33 are provided with recess 333.Recess 333 can be easy to sealed end
Bend deformation.
In the present embodiment, two ends of the sealed end 332 of butterfly plate sealing ring 33 are equipped with recess 333.Butterfly plate seals
The fixing end 331 and sealed end 332 of circle form approximate Double " T " shape structure.
The thickness a of the fixing end 331 of butterfly plate sealing ring 33 is more than sealed end 332.Butterfly plate 3 is provided with to be coordinated with fixing end 331
The 4th groove 35.4th groove 35 coordinates with fixing end 331, effectively limits the displacement of butterfly plate sealing ring 33.
The thickness b of 4th groove 35 is less than the thickness a of the fixing end 331 of butterfly plate sealing ring 33.So that butterfly plate sealing ring 33
Fixing end 331 protruded from the 4th groove 35, sealing ring pressing plate 31 contacts with fixing end 331, effective fixed butterfly plate sealing ring
33。
The section of valve seat gland 11 is " L " shape, simple and reliable for structure.
In order to reduce valve shaft moving along valve body axial direction, the both ends of valve shaft 4 are connected by bearing 6 with valve body 1.
The bottom of valve shaft 4 is provided with planar pad 7, and the other end of valve shaft 4 is provided with closure 8.It is effectively reduced valve shaft 4 and butterfly
Plate 3 moves along the radial direction of valve body 1, and has good sealing effectiveness.
The valve seat 4, butterfly plate sealing ring 33 of the present embodiment are metal material, and two-way hard seal can be achieved, be bidirectional metal hard
Sealed butterfly valve.
Embodiment 2
The structure of the present embodiment is similar to Example 1 with principle, and difference is：
As shown in fig. 7, the side wall of the first groove 12 and/or the side wall of valve seat 2 coordinated with the side wall of the first groove 12 are provided with
3rd groove 4, the 3rd groove 4 connect with the first gap 21.
Obviously, above-described embodiment is only intended to clearly illustrate technical scheme example, and is not
Restriction to embodiments of the present invention.For those of ordinary skill in the field, on the basis of the above description also
It can make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all
All any modification, equivalent and improvement made within the spirit and principles in the present invention etc., should be included in right of the present invention will
Within the protection domain asked.
Claims (8)
1. a kind of bidirectional metal hard-sealing butterfly valve, including valve body, valve seat, butterfly plate, valve shaft, it is characterised in that the valve body it is interior
Cavity wall is provided with valve seat gland, and the valve body forms the first groove with valve seat gland, and the valve seat is located in the first groove, described
The first gap is formed between valve seat and the first groove；The sealing surface of the valve seat is towards the inclined-plane of valve shaft；
The butterfly plate is provided with sealing ring pressing plate, and the butterfly plate and sealing ring pressing plate form the second groove, in second groove
The double "T"-shaped butterfly plate sealing rings for forming sealing pair are engaged provided with the sealing surface with valve seat；The fixation of the butterfly plate sealing ring
End is fixedly connected with the second groove；The side of the sealed end of the butterfly plate sealing ring contacts with butterfly plate, opposite side and sealing ring pressure
The second gap is formed between plate；The sealing surface of the butterfly plate sealing ring is away from the inclined-plane of valve shaft；
First gap is connected with body cavity；
The both ends of the valve shaft are connected by bearing with valve body.
2. bidirectional metal hard-sealing butterfly valve according to claim 1, it is characterised in that the side wall of the first groove and/or with
The valve seat wall that the side wall of one groove coordinates is provided with the 3rd groove, and the 3rd groove connects with the first gap.
3. bidirectional metal hard-sealing butterfly valve according to claim 1, it is characterised in that the valve seat is provided with what is coordinated with valve body
Sealing ring；The fixing end of the butterfly plate sealing ring is provided with the sealing ring coordinated with butterfly plate and/or sealing ring pressing plate.
4. bidirectional metal hard-sealing butterfly valve according to claim 1, it is characterised in that the sealed end of the butterfly plate sealing ring
Side is provided with recess.
5. bidirectional metal hard-sealing butterfly valve according to claim 4, it is characterised in that the fixing end of the butterfly plate sealing ring
Thickness a is more than sealed end；The butterfly plate is provided with the 4th groove coordinated with fixing end.
6. bidirectional metal hard-sealing butterfly valve according to claim 5, it is characterised in that the thickness b of the 4th groove is less than
The thickness a of the fixing end of butterfly plate sealing ring.
7. bidirectional metal hard-sealing butterfly valve according to claim 1, it is characterised in that the section of the valve seat gland is " L "
Shape.
8. bidirectional metal hard-sealing butterfly valve according to claim 1, it is characterised in that the bottom of the valve shaft is provided with plane
Pad, the other end of the valve shaft are provided with closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610027142.6A CN105508634B (en) | 2016-01-18 | 2016-01-18 | A kind of bidirectional metal hard-sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610027142.6A CN105508634B (en) | 2016-01-18 | 2016-01-18 | A kind of bidirectional metal hard-sealing butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105508634A CN105508634A (en) | 2016-04-20 |
| CN105508634B true CN105508634B (en) | 2017-11-24 |
Family
ID=55716831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610027142.6A Active CN105508634B (en) | 2016-01-18 | 2016-01-18 | A kind of bidirectional metal hard-sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105508634B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200165239Y1 (en) * | 1999-07-20 | 2000-02-15 | 박일열 | Disc flexible metal seat butterfly valve |
| CN201386804Y (en) * | 2009-02-13 | 2010-01-20 | 浙江石化阀门有限公司 | Two-way bellows hard-seated butterfly valve |
| CN203463678U (en) * | 2013-08-07 | 2014-03-05 | 中阀科技(长沙)阀门有限公司 | High-temperature high-pressure bidirectional metal hard sealing butterfly valve |
| CN104006173B (en) * | 2014-02-17 | 2016-06-29 | 中亚阀门有限公司 | Bidirectional sealed butterfly valve |
| CN203809714U (en) * | 2014-02-25 | 2014-09-03 | 杭州杭氧工装泵阀有限公司 | Three-rod switch butterfly valve |
| CN204213362U (en) * | 2014-10-20 | 2015-03-18 | 上海冠龙阀门机械有限公司 | A kind of high pressure butterfly valve with bilateral sealing device |
| CN105179714A (en) * | 2015-10-23 | 2015-12-23 | 天津市华顺通阀门有限公司 | Triple eccentric bidirectional hard sealing butterfly valve |
| CN205371656U (en) * | 2016-01-18 | 2016-07-06 | 株洲南方阀门股份有限公司 | Bidirectional metal hard seal butterfly valve |
-
2016
- 2016-01-18 CN CN201610027142.6A patent/CN105508634B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105508634A (en) | 2016-04-20 |
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