CN204755948U - Portable metal of disk seat butterfly valve sealed firmly - Google Patents

Portable metal of disk seat butterfly valve sealed firmly Download PDF

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Publication number
CN204755948U
CN204755948U CN201520345354.XU CN201520345354U CN204755948U CN 204755948 U CN204755948 U CN 204755948U CN 201520345354 U CN201520345354 U CN 201520345354U CN 204755948 U CN204755948 U CN 204755948U
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CN
China
Prior art keywords
valve
disk seat
valve seat
sealed
circular seal
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
CN201520345354.XU
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Chinese (zh)
Inventor
赵泽文
黄庆周
张洪波
谢庆生
蒙志明
杨华
门友华
刘风伟
唐定忠
杨海廷
李文松
曾闯
阮第辉
黄能钰
李大明
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.)
Liuzhou Iron and Steel Co Ltd
Original Assignee
Liuzhou Iron and Steel 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 Liuzhou Iron and Steel Co Ltd filed Critical Liuzhou Iron and Steel Co Ltd
Priority to CN201520345354.XU priority Critical patent/CN204755948U/en
Application granted granted Critical
Publication of CN204755948U publication Critical patent/CN204755948U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a portable metal of disk seat butterfly valve sealed firmly is connected with first metal expansion joint between circular sealed disk seat front end and the valve body, be connected with second metal expansion joint between circular sealed disk seat rear end and the valve body flange, is connected with disk seat drive arrangement between circular sealed disk seat and the valve body, by disk seat drive arrangement drives circular sealed disk seat and moves along about the valve body axis, in the valve closed condition, circular sealed disk seat moves to the position with the valve plate joint is sealed, and in the valve open mode, circular sealed disk seat moves to the position with the valve plate separation, its advantage has two -way pressure bearing sealing performance, through disk seat drive arrangement's effect, can guarantee sealed vice sealed specific pressure, the valve plate is sealed firmly vice with disk seat adoption sphere or positive conical surface metal, and processing technology is simple, the sealed vice easy face contact that realizes, and seal structure's interchangeability is good, sealed disk seat adopts flat movable structure, and switch motion is reliable.

Description

The portable metal hard-sealing butterfly valve of valve seat
Technical field
The utility model relates to a kind of metal hard-sealing butterfly valve applied in metal hard-sealing butterfly valve manufacture and fluid line, relates to the portable metal hard-sealing butterfly valve of a kind of valve seat particularly.
Background technique
Metal hard-sealing butterfly valve is because its structure is simple, opening and closing moment is relatively little, easy to use and be widely used in the break-make of pipeline fluid.In order to improve the working pressure of metal hard-sealing butterfly valve and ensure start-stop performance flexibility and reliability, existing metal hard-sealing butterfly valve, because its valve body and seal valve seat are fixed structure, realize rotation and the sealing of valve plate, its structural type many employings three eccentricity structure, between valve plate with seal valve seat, coordinating of sealing pair adopts surface of revolution to coordinate, and technically has the following disadvantages:
1, processing request is high.The sealing pair of eccentric structure metal hard-sealing butterfly valve is anon-normal cone surface of revolution, requires high to process equipment configuration, control process, and sealing pair need match processing, and interchangeability is poor, and manufacturing process cost is high.
2, sealing pair material requirements is strict.Consider metal hard-sealing butterfly valve in use by factors such as temperature variation, fluid scouring, blind flange force effects, guarantee anon-normal cone surface of revolution sealing pair reliability, high to sealing pair material performance requirement, manufactured materials cost is high.
3, sealing reliability is poor.The switch of metal hard-sealing butterfly valve and sealing compress action, are realized by valve shaft transmitting torque by driving mechanism, and the extruding of sealing pair, distortion and wear extent exceed certain limit, will the sealability of the whole valve body of impact.When runner medium is adverse current, need reverse pressure-bearing, along with the increase of pressure medium, when the unit positive pressure sealed between valve plate and valve seat is less than medium pressure, valve plate will be backed down, and starts to occur leaking.
4, the easy jam of valve plate.Metal hard-sealing butterfly valve will reach sealability, needs extruding suitable between sealing pair, distortion, and when runner medium positive flow state, more high sealing extruding is tighter for pressure medium, easily cause valve plate seal ring and valve seat stuck, cause valve cannot action.
Model utility content
The purpose of this utility model is to provide the portable metal hard-sealing butterfly valve of a kind of valve seat, the action of driving mechanism is overlapped by the valve plate driving device of valve and valve seat drive unit two, realize valve switch flexible, bidirectional bearing good seal performance, reaches pipeline fluid medium and cuts logical reliably.
The technical solution of the utility model is:
The portable metal hard-sealing butterfly valve of a kind of valve seat, comprise valve body, valve plate, valve shaft, circular seal valve seat, valve plate driving device and valve flange, wherein said valve plate is arranged in valve flowing channel, be connected with valve plate driving device by valve shaft again, described valve plate and circular seal valve seat form metal-seated, it is characterized in that: between described circular seal valve seat front end and valve body, be connected with the first type metal expansion joint, the second type metal expansion joint is connected with between described circular seal valve seat rear end and valve flange, valve seat drive unit is connected with between described circular seal valve seat and valve body, circular seal valve seat is driven to move left and right along valve axis by described valve seat drive unit, in valve closed condition, described circular seal valve seat moves to the position engaging with valve plate and seal, and in valve open mode, described circular seal valve seat moves to the position be separated with valve plate.
Technological scheme also comprises more specifically: the metal-seated that described valve plate and described circular seal valve seat form is sphere or conical surface metal-seated.
Further: described circular seal valve seat has overhanging installation convex shoulder, is equipped with valve body convex shoulder in valve outer wall corresponding positions, described valve seat drive unit is oil cylinder, and its two ends are connected with the installation convex shoulder of circular seal valve seat, the valve body convex shoulder of valve body respectively.
Further: described valve body is connected with valve flange by the pull bar that is rigidly connected.
Further: the spin axis of described valve plate is positioned on valve axis.
Further: the sealing plane center of the axis deviation valve plate of the rotary valve shaft of described valve plate.
The utility model has the advantages that:
1, there is bidirectional bearing sealability.The valve plate rotary switch action of valve is performed by a set of driving mechanism, and the sealing compression action of valve plate and seal valve seat is performed by another set of driving mechanism, and the action of sealing compression is straight line motion, and sealing pair uniform force, load performance is good.When particularly reverse pressure-bearing causes valve plate to be out of shape displacement, by the effect of valve seat drive unit, the seal pressure of sealing pair can be ensured, ensure that the two way sealed performance of valve.
2, manufacturing process is simple.Valve plate and valve seat adopt sphere or positive conical surface metal hard-sealing pair, and processing technology is simple, and sealing pair easily realizes face contact, and the interchangeability of sealing configuration is good.
3, valve event is reliable.Seal valve seat adopts flat portable structure, and valve plate and seal valve seat seal contact process and rub without relative sliding, wear phenomenon can not occur.Sealing pair is thrown off easily, can not cause valve plate jam.
Accompanying drawing explanation
Accompanying drawing is for illustration of embodiment of the present utility model.
Accompanying drawing 1 is structural representation of the present utility model.
Accompanying drawing 2 is A direction view of accompanying drawing 1.
Accompanying drawing 3 is that structure shown in Fig. 1 is in closed condition structural representation.
Accompanying drawing 4 is that structure shown in Fig. 1 is in sealing pair exploded perspective schematic diagram.
Accompanying drawing 5 is that structure shown in Fig. 1 is in valve plate open mode structural representation.
In accompanying drawing, each parts are detailed as follows: 1, valve body, and 2, valve plate, 3, valve shaft, 4, circular seal valve seat, 5, valve seat drive unit, the 6, first type metal expansion joint, the 7, second type metal expansion joint, 8, valve flange, 9, be rigidly connected pull bar, 10, valve plate driving device.
Embodiment
As Fig. 1, shown in 2, the present embodiment comprises valve body 1, valve plate 2, valve shaft 3, circular seal valve seat 4 and valve plate driving device 10, valve plate 2 is fixed on valve shaft 3, the rotation acting on lower valve shaft 3 at valve plate driving device 10 can realize the motion of switch rotary, valve plate 2 and circular seal valve seat 4 form sphere or conical surface metal hard-sealing is secondary, circular seal valve seat 4 has overhanging installation convex shoulder, valve body convex shoulder is equipped with in valve body 1 outer wall corresponding positions, described valve seat drive unit 5 is oil cylinder, its two ends respectively with the installation convex shoulder of circular seal valve seat 4, the valve body convex shoulder of valve body 1 connects, circular seal valve seat 4 is driven to move left and right along valve axis by the driving effect of valve seat drive unit 5, the compression between circular seal valve seat 4 with valve plate 2 sealing pair can be realized and be separated.
One end of described circular seal valve seat 4 is connected to valve body 1 by the first expansion of metal pitch circle 6, utilizes the telescopicing performance of the first type metal expansion joint 6, and circular seal valve seat 4 relatively valve body 1 relative displacement can occur.
The other end of described circular seal valve seat 4 is connected to valve flange 8 by the second type metal expansion joint 7, utilizes the telescopicing performance of the second type metal expansion joint 7, and circular seal valve seat 4 relatively valve flange 8 relative displacement can occur.
Described valve body 1 connects into a structural entity with valve flange 8 by the pull bar 9 that is rigidly connected, and the pull bar 9 that is rigidly connected bears blind flange force.
The sealing plane center of the axis deviation valve plate 2 of the rotary valve shaft 3 of described valve plate 2.
The operating process of the present embodiment is:
1, valve state is by closing → opening process: when butterfly valve is in closed condition, as shown in Figure 3; Stretched in circular seal valve seat 4, first type metal expansion joint 6 by the thrust of valve seat drive unit 5, the second type metal expansion joint 7 compresses, and the sealing pair between circular seal valve seat 4 with valve plate 2 is separated, as shown in Figure 4; Drive valve shaft 3 by valve plate driving device 10 again and drive valve plate 2 90-degree rotation, butterfly valve is opened, as shown in Figure 5.
2, valve state is by opening → closing process: when butterfly valve is in opening state, as shown in Figure 5: drive valve shaft 3 by valve plate driving device 10 and drive valve plate 2 90-degree rotation, as shown in Figure 4; Act on circular seal valve seat 4, first type metal expansion joint 6 by the pulling force of valve seat drive unit 5 again to compress, the second type metal expansion joint 7 stretches, and the sealing pair between circular seal valve seat 4 and valve plate 2 compresses, and butterfly valve cuts out, as shown in Figure 3.

Claims (6)

1. the portable metal hard-sealing butterfly valve of valve seat, comprise valve body (1), valve plate (2), valve shaft (3), circular seal valve seat (4), valve plate driving device (10) and valve flange (8), wherein said valve plate (2) is arranged in valve body (1) runner, be connected with valve plate driving device (10) by valve shaft (3) again, described valve plate (2) and circular seal valve seat (4) form metal-seated, it is characterized in that: between described circular seal valve seat (4) front end and valve body (1), be connected with the first type metal expansion joint (6), the second type metal expansion joint (7) is connected with between described circular seal valve seat (4) rear end and valve flange (8), valve seat drive unit (5) is connected with between described circular seal valve seat (4) and valve body (1), circular seal valve seat (4) is driven to move left and right along valve axis by described valve seat drive unit (5), in valve closed condition, described circular seal valve seat (4) moves to and engages with valve plate (2) position sealed, and in valve open mode, described circular seal valve seat (4) moves to the position be separated with valve plate (2).
2. the portable metal hard-sealing butterfly valve of valve seat according to claim 1, is characterized in that: the metal-seated that described valve plate (2) and described circular seal valve seat (4) form is sphere or conical surface metal-seated.
3. the portable metal hard-sealing butterfly valve of valve seat according to claim 1 and 2, it is characterized in that: described circular seal valve seat (4) has overhanging installation convex shoulder, valve body convex shoulder is equipped with in valve body (1) outer wall corresponding positions, described valve seat drive unit (5) is oil cylinder, and its two ends are connected with the installation convex shoulder of circular seal valve seat (4), the valve body convex shoulder of valve body (1) respectively.
4. the portable metal hard-sealing butterfly valve of valve seat according to claim 1, is characterized in that: described valve body (1) is connected with valve flange (8) by the pull bar that is rigidly connected (9).
5. the portable metal hard-sealing butterfly valve of valve seat according to claim 1 and 2, is characterized in that: the spin axis of described valve plate (2) is positioned on valve axis.
6. the portable metal hard-sealing butterfly valve of valve seat according to claim 1 and 2, is characterized in that: the sealing plane center of the axis deviation valve plate (2) of the rotary valve shaft (3) of described valve plate (2).
CN201520345354.XU 2015-05-26 2015-05-26 Portable metal of disk seat butterfly valve sealed firmly Expired - Fee Related CN204755948U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520345354.XU CN204755948U (en) 2015-05-26 2015-05-26 Portable metal of disk seat butterfly valve sealed firmly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520345354.XU CN204755948U (en) 2015-05-26 2015-05-26 Portable metal of disk seat butterfly valve sealed firmly

Publications (1)

Publication Number Publication Date
CN204755948U true CN204755948U (en) 2015-11-11

Family

ID=54470655

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520345354.XU Expired - Fee Related CN204755948U (en) 2015-05-26 2015-05-26 Portable metal of disk seat butterfly valve sealed firmly

Country Status (1)

Country Link
CN (1) CN204755948U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104864106A (en) * 2015-05-26 2015-08-26 柳州钢铁股份有限公司 Metal hard sealing butterfly valve with moving valve seat

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104864106A (en) * 2015-05-26 2015-08-26 柳州钢铁股份有限公司 Metal hard sealing butterfly valve with moving valve seat

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Legal Events

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

Granted publication date: 20151111

Termination date: 20190526

CF01 Termination of patent right due to non-payment of annual fee