CN207864638U - Teflon seal butterfly valve - Google Patents

Teflon seal butterfly valve Download PDF

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Publication number
CN207864638U
CN207864638U CN201721737764.4U CN201721737764U CN207864638U CN 207864638 U CN207864638 U CN 207864638U CN 201721737764 U CN201721737764 U CN 201721737764U CN 207864638 U CN207864638 U CN 207864638U
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CN
China
Prior art keywords
valve
butterfly
teflon seal
butterfly plate
gland
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.)
Active
Application number
CN201721737764.4U
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Chinese (zh)
Inventor
项光宽
苏再术
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 CN201721737764.4U priority Critical patent/CN207864638U/en
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Publication of CN207864638U publication Critical patent/CN207864638U/en
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Abstract

The utility model discloses a kind of teflon seal butterfly valves, including valve body, valve seat insert, butterfly plate, valve rod, metallic framework, nitrile rubber circle, gland, axle sleeve, stuffing-box.The valve body is connected by valve rod and circular cone axis pin respectively with butterfly plate;There is the butterfly plate arc-shaped structure, the valve seat insert to be set to the both ends end of butterfly plate simultaneously;The valve seat insert is bolted with valve body.The bottom of the stuffing-box is equipped with Packing seat, and the middle part of the Packing seat is equipped with through-hole, and valve rod is placed in the Packing seat, and Packing seat is filled with filler, gland is equipped with above filler.Teflon seal butterfly valve disclosed by the utility model, butterfly plate are designed to arc-shaped structure, and having ensured product appearance, the lines flow smoothly, while saving production cost, avoid mutually squeezing between butterfly plate and sealing ring.

Description

Teflon seal butterfly valve
Technical field
The utility model belongs to low pressure valve technical field, and in particular to a kind of teflon seal butterfly valve.
Background technology
Butterfly valve can be used for switching low-voltage tube medium as a kind of regulating valve that structure is relatively simple.It is with closure member butterfly plate Disk realizes the purpose of open and close around valve shaft rotation.Butterfly valve can be used for controlling empty gas and water, steam, various corrosivity The flowing of the various types fluid such as medium, mud, oil product, liquid metal and radiating medium.It mainly cuts off and saves on pipeline Stream acts on.Butterfly valve opening and closing element is a discoidal butterfly plate, in valve body around the axis of its own rotate, to reach open and close or The purpose of adjusting.
Utility model content
The utility model is directed to the situation of the prior art, provides a kind of teflon seal butterfly valve.
The utility model use following technical scheme, the teflon seal butterfly valve include valve body, valve seat insert, Butterfly plate, valve rod, metallic framework, nitrile rubber circle, gland, axle sleeve, stuffing-box, wherein:
The valve body is connected by valve rod and circular cone axis pin respectively with butterfly plate;The butterfly plate has arc-shaped structure, The valve seat insert is set to the both ends end of butterfly plate simultaneously;The valve seat insert is bolted with valve body;
The bottom of the stuffing-box is equipped with Packing seat, and the middle part of the Packing seat is equipped with through-hole, valve rod is placed in the Packing seat, Packing seat is filled with filler, gland is equipped with above filler, the gland is in the simple shape of circle and has centre bore, gland It is socketed on valve rod and is fixedly connected with the valve body by symmetrical bolt.
According to above-mentioned technical proposal, the valve seat insert uses metallic framework, and the nitrile rubber circle is using vulcanization work Skill is made, and the filler is made of polytetrafluoroethylene (PTFE).
According to above-mentioned technical proposal, the teflon seal butterfly valve further includes divided ring, the divided ring and valve rod The groove of end cooperates, and the middle part of axle sleeve is equipped with endoporus, and valve rod is placed in axle sleeve.
According to above-mentioned technical proposal, the teflon seal butterfly valve further includes gasket and rear cover, the gasket It is connected with rear cover, the rear cover is fixedly connected with the valve body by bolt.
Teflon seal butterfly valve disclosed by the utility model, advantage are that butterfly plate designs knot in the arc-shaped Structure, having ensured product appearance, the lines flow smoothly, while saving production cost, avoids mutually squeezing between butterfly plate and sealing ring.
Description of the drawings
Fig. 1 is the sectional structure chart of the preferred embodiment in the utility model.
Fig. 2 is the partial structural diagram of the preferred embodiment in the utility model.
Fig. 3 A and Fig. 3 B are the partial structural diagrams of the preferred embodiment in the utility model.
Fig. 4 A to Fig. 4 C are the partial structural diagrams of the preferred embodiment in the utility model.
Reference numeral includes:1- glands;2- stuffing-boxes;3- axle sleeves;4- valve seat inserts;5- circular cone axis pins;6- butterflies Plate;7- valve rods;8- valve bodies;9- divided rings;10- gaskets;11- rear covers;12- metallic frameworks;13- nitrile rubber circles.
Specific implementation mode
The utility model discloses a kind of teflon seal butterfly valves, new to this practicality with reference to preferred embodiment The specific implementation mode of type is further described.
The cross-section structure of the teflon seal butterfly valve is shown to Fig. 4, Fig. 1 referring to Figure 1 of the drawings.Preferably, The teflon seal butterfly valve includes valve body 8, valve seat insert 4, butterfly plate 6, valve rod 7, metallic framework 12, nitrile rubber circle 13, gland 1 and axle sleeve 3, wherein:
The valve body 8 is connected by valve rod 7 and circular cone axis pin 5 respectively with butterfly plate 6, will pass through operated by handwheel drive Valve rod 7 realizes valve switch to drive butterfly plate 6 to rotate.The butterfly plate 6 has arc-shaped structure, the valve seat insert 4 It is set to the both ends end of butterfly plate 6 simultaneously.The valve seat insert 4 is bolted with valve body 8.
The valve seat insert 4 uses metallic framework 12, and the nitrile rubber circle 13 is using sulfuration process and passes through mould Has machine-shaping.
The teflon seal butterfly valve further includes stuffing-box 2, and the bottom of the stuffing-box 2 is equipped with axle sleeve 3 and filler The middle part of pad, the Packing seat is equipped with through-hole, and valve rod 7 is placed in the Packing seat.Packing seat is filled with filler, which uses poly- four Vinyl fluoride is made.Gland 1 is equipped with above filler, the gland 1 is in the simple shape of circle and has centre bore.Gland 1 exists It is sleeved on when installation on valve rod 7 and is fixed by symmetrical bolt and valve body 1 to compress filler.
The teflon seal butterfly valve further includes divided ring 9, and the divided ring 9 and the groove of 7 end of valve rod are mutual Cooperation.The middle part of axle sleeve 3 is equipped with endoporus, and axle sleeve 3 is placed on valve rod 7 in when mounted.
The teflon seal butterfly valve further includes gasket 10 and rear cover 11, and the gasket 10 coordinates with rear cover 11 Connection, the rear cover 11 are fixedly connected by bolt with valve body 8.
Wherein, butterfly plate is designed to arc-shaped structure, and having ensured product appearance, the lines flow smoothly, has more mainly saved and has been produced into This, while reducing the extruding between butterfly plate and sealing ring;Valve seat insert uses sulfuration process with mold, has ensured valve seat Size and precision are produced, substantially increases the sealing performance and service life of product in this way.
For a person skilled in the art, the technical solution recorded in foregoing embodiments can still be repaiied Change or equivalent replacement of some of the technical features, within the spirit and principle of the utility model, made by it is any Modification, equivalent replacement, improvement etc., should be included in the scope of protection of the utility model.

Claims (4)

1. a kind of teflon seal butterfly valve, which is characterized in that including valve body, valve seat insert, butterfly plate, valve rod, metal bone Frame, nitrile rubber circle, gland, axle sleeve, stuffing-box, wherein:
The valve body is connected by valve rod and circular cone axis pin respectively with butterfly plate;The butterfly plate has arc-shaped structure, described Valve seat insert is set to the both ends end of butterfly plate simultaneously;The valve seat insert is bolted with valve body;
The bottom of the stuffing-box is equipped with Packing seat, and the middle part of the Packing seat is equipped with through-hole, valve rod, filler are placed in the Packing seat Pad is filled with filler, gland is equipped with above filler, the gland is in the simple shape of circle and has centre bore, gland socket It is fixedly connected with the valve body in valve rod and by symmetrical bolt.
2. teflon seal butterfly valve according to claim 1, which is characterized in that the valve seat insert uses metal Skeleton, the nitrile rubber circle are made of sulfuration process, and the filler is made of polytetrafluoroethylene (PTFE).
3. teflon seal butterfly valve according to claim 1, which is characterized in that the teflon seal butterfly valve Further include divided ring, the groove of the divided ring and valve stem end cooperates, and the middle part of axle sleeve is equipped with endoporus, is placed in axle sleeve Valve rod.
4. teflon seal butterfly valve according to claim 1, which is characterized in that the teflon seal butterfly valve Further include gasket and rear cover, the gasket is connected with rear cover, and the rear cover is fixedly connected with the valve body by bolt.
CN201721737764.4U 2017-12-14 2017-12-14 Teflon seal butterfly valve Active CN207864638U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721737764.4U CN207864638U (en) 2017-12-14 2017-12-14 Teflon seal butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721737764.4U CN207864638U (en) 2017-12-14 2017-12-14 Teflon seal butterfly valve

Publications (1)

Publication Number Publication Date
CN207864638U true CN207864638U (en) 2018-09-14

Family

ID=63468931

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721737764.4U Active CN207864638U (en) 2017-12-14 2017-12-14 Teflon seal butterfly valve

Country Status (1)

Country Link
CN (1) CN207864638U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108869765A (en) * 2018-09-21 2018-11-23 上海沪东造船阀门有限公司 A kind of compound seal ring of the class cam design suitable for eccentric-butterfly-valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108869765A (en) * 2018-09-21 2018-11-23 上海沪东造船阀门有限公司 A kind of compound seal ring of the class cam design suitable for eccentric-butterfly-valve

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