CN204459183U - High-performance double seal bellows stop valve special for chlorine - Google Patents

High-performance double seal bellows stop valve special for chlorine Download PDF

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Publication number
CN204459183U
CN204459183U CN201520018876.9U CN201520018876U CN204459183U CN 204459183 U CN204459183 U CN 204459183U CN 201520018876 U CN201520018876 U CN 201520018876U CN 204459183 U CN204459183 U CN 204459183U
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CN
China
Prior art keywords
valve
hard
sealing surface
flap
bellows
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Active
Application number
CN201520018876.9U
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Chinese (zh)
Inventor
吕锦和
吕锦海
胡东军
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Luo Fu Valve Group Ships Valve Co Ltd Well In Wenzhou
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Luo Fu Valve Group Ships Valve Co Ltd Well In Wenzhou
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Application filed by Luo Fu Valve Group Ships Valve Co Ltd Well In Wenzhou filed Critical Luo Fu Valve Group Ships Valve Co Ltd Well In Wenzhou
Priority to CN201520018876.9U priority Critical patent/CN204459183U/en
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Abstract

The utility model relates to a kind of high-performance double seal bellows stop valve special for chlorine, comprises valve body, flap, valve rod, valve gap, bellows, handwheel; Mainly bellows upper end seal welding is in the lower end surface of stuffing box body, and seal welding between the upper-end surface of stuffing box body and valve gap upper-end surface, installs graphite grazing filler between stuffing box body inner chamber and valve rod; Valve clack sealing surface adopts soft or hard double sealing structure, in it, layer sealing surface adopts pile-up welding hard alloy to make conical hard sealing surface, flap lower end surface outside the hard sealing surface of this taper shape manufactures circular groove, install teflin ring at this circular groove internal fixtion, valve channel inner chamber is shaped with the hard sealing surface of taper shape and sealing plane that cooperatively interact with the hard sealing surface of the taper shape on flap and teflin ring.Its sealability is reliable, is applicable to the control valve of chlorine conveying pipelines.

Description

High-performance double seal bellows stop valve special for chlorine
Technical field
The utility model belongs to valve field, particularly a kind of bellows stop valve.The utility model is applicable to the control valve of chlorine conveying pipelines.
Background technique
Because liquid chlorine purposes is comparatively extensive, after general gasification as strong oxidizer for weaving, papermaking, polysilicon, PVC and licking of water purification and sterilization etc. from the beginning add material.Liquid chlorine has severe irritation effect and corrosivity, can occur to burn and explode, and can react with most metals when mixing with other inflammable gases in the sunlight, produces corrosion to metal.So, require very high to the sealability of chlorine conveying pipelines control valve, at present, the more use bellows stop valve of chlorine gas transfer system.The bellows upper end of tradition bellows stop valve is generally welded on a mounting board, and mounting plate sealing is arranged between valve body and valve gap, realizes lumen sealing; Flap and valve seat generally adopt soft sealing structure.Its major defect is: bellows, in the medium of liquid chlorine, holds corrosion-vulnerable and interior leakage occurs, cause medium to leak outside, and produces corrosion and produce pollution to environment to equipment; Flap soft sealing face is easily damaged by the impurity in medium, and leak in occurring, sealing reliability is poor.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, provides a kind of sealability reliable high-performance double seal bellows stop valve special for chlorine.
The technical solution of the utility model comprises valve body, flap, valve rod, valve gap, bellows, handwheel, the flap back side is fixedly mounted on valve rod lower end by mounting blocks, valve rod upper end is fixedly connected with handwheel through the Stem Mut be arranged in support, between support and valve rod, be provided with guiding device, bellows lower end is welded with valve stem seal; Mainly bellows upper end seal welding is in the lower end surface of stuffing box body, and seal welding between the upper-end surface of stuffing box body and valve gap upper-end surface, installs graphite grazing filler between stuffing box body inner chamber and valve rod; Valve clack sealing surface adopts soft or hard double sealing structure, in it, layer sealing surface adopts pile-up welding hard alloy to make conical hard sealing surface, flap lower end surface outside the hard sealing surface of this taper shape manufactures circular groove, install teflin ring at this circular groove internal fixtion, valve channel inner chamber is shaped with the hard sealing surface of taper shape and sealing plane that cooperatively interact with the hard sealing surface of the taper shape on flap and teflin ring.
In above technological scheme, between valve body and valve gap, adopt metallic shim and Expanded graphite O type circle double sealing structure.
The utility model has the advantages that bellows upper end stuffing box body and seal welding, stuffing box body welds with valve bonnet seal, and stuffing box body and installation stuffing box packing, constitute lumen double sealing structure; Adopt hard soft double sealing structure between flap and valve seal seat, the hard sealing pair of its internal layer has wear resistance, prevents impurity from damaging sealing pair, and outer soft seal is secondary to be coordinated with valve seal seat and realize 0 leakage sealed, and sealing reliability is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1 valve body, 2 flaps, 3 valve rods, 4 mounting blocks, 5 bellowss, 6 metallic shims, 7 valve gaps, 8 stuffing box bodies, 9 graphite grazing fillers, 10 guiding devices, 11 supports, 12 handwheels, 13 Stem Muts, 14 Glands, 15 Expanded graphite O type circles, 16 teflin rings.
Embodiment
High-performance double seal bellows stop valve special for chlorine as shown in Figure 1, comprise valve body 1, flap 2, valve rod 3, valve gap 7, bellows 5, handwheel 12, flap 2 back side is fixedly mounted on valve rod 3 lower end by mounting blocks 4, valve rod 3 upper end is fixedly connected with handwheel 12 through the Stem Mut 13 be arranged in support 11, guiding device 10 is provided with between support 11 and valve rod 3, the convert rotational motion of handwheel 12 is the straight line motion of valve rod 3 by this guiding device 10, bellows 5 lower end and valve rod 3 seal welding, bellows 5 upper end seal welding is in the lower end surface of stuffing box body 8, bellows 5 adopts has good 316L or the HastelloyC276 material of resistance to chlorine corrosivity, seal welding between the upper-end surface of stuffing box body 8 and valve gap 7 upper-end surface, graphite grazing filler 9 is installed between stuffing box body 8 inner chamber and valve rod 3, make valve lumen form the double sealing structure be made up of bellows 5 and graphite grazing filler 9, graphite grazing filler 9 is compressed by Gland 14 and is arranged in stuffing box body 8, flap 2 sealing surface adopts soft or hard double sealing structure, in it, layer sealing surface adopts pile-up welding hard alloy to make conical hard sealing surface, this cemented carbide adopts stellite, flap 2 lower end surface outside the hard sealing surface of this taper shape manufactures circular groove, at this circular groove internal fixtion, teflin ring 16 is installed, this teflin ring 16 adopts RPTFE reinforced TFE, valve body 1 channel lumen is shaped with the hard sealing surface of taper shape and sealing plane that cooperatively interact with the hard sealing surface of the taper shape on flap 2 and teflin ring 16, make to form hard soft double sealing structure between flap 2 and valve body 1 sealing seat, realize zero leakage sealing.
Adopt metallic shim 6 and Expanded graphite O type circle 15 double sealing structure between valve body 1 and valve gap 7, metallic shim 6 adopts 316L anti-corrosive alloy material.

Claims (2)

1. a high-performance double seal bellows stop valve special for chlorine, comprise valve body (1), flap (2), valve rod (3), valve gap (7), bellows (5), handwheel (12), flap (2) back side is fixedly mounted on valve rod (3) lower end by mounting blocks (4), valve rod (3) upper end is fixedly connected with handwheel (12) through the Stem Mut (13) be arranged in support (11), guiding device (10) is provided with between support (11) and valve rod (3), bellows (5) lower end and valve rod (3) seal welding, it is characterized in that the lower end surface of bellows (5) upper end seal welding in stuffing box body (8), seal welding between the upper-end surface of stuffing box body (8) and valve gap (7) upper-end surface, installs graphite grazing filler (9) between stuffing box body (8) inner chamber and valve rod (3), flap (2) sealing surface adopts soft or hard double sealing structure, in it, layer sealing surface adopts pile-up welding hard alloy to make conical hard sealing surface, flap (2) lower end surface outside the hard sealing surface of this taper shape manufactures circular groove, install teflin ring (16) at this circular groove internal fixtion, valve body (1) channel lumen is shaped with the hard sealing surface of taper shape and sealing plane that cooperatively interact with the hard sealing surface of taper shape on flap (2) and teflin ring (16).
2. high-performance double seal bellows stop valve special for chlorine according to claim 1, is characterized in that adopting metallic shim (6) and Expanded graphite O type circle (15) double sealing structure between valve body (1) and valve gap (7).
CN201520018876.9U 2015-01-05 2015-01-05 High-performance double seal bellows stop valve special for chlorine Active CN204459183U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520018876.9U CN204459183U (en) 2015-01-05 2015-01-05 High-performance double seal bellows stop valve special for chlorine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520018876.9U CN204459183U (en) 2015-01-05 2015-01-05 High-performance double seal bellows stop valve special for chlorine

Publications (1)

Publication Number Publication Date
CN204459183U true CN204459183U (en) 2015-07-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520018876.9U Active CN204459183U (en) 2015-01-05 2015-01-05 High-performance double seal bellows stop valve special for chlorine

Country Status (1)

Country Link
CN (1) CN204459183U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090530A (en) * 2015-07-23 2015-11-25 苏州科迪流体控制设备有限公司 Stop valve
CN106151538A (en) * 2016-08-31 2016-11-23 浙江智鹏自控阀门有限公司 Fluorine-lined bellows regulating valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090530A (en) * 2015-07-23 2015-11-25 苏州科迪流体控制设备有限公司 Stop valve
CN106151538A (en) * 2016-08-31 2016-11-23 浙江智鹏自控阀门有限公司 Fluorine-lined bellows regulating valve

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address

Address after: Yongjia Oubei County of Wenzhou City, Zhejiang province 325102 street Dong'ou Industrial Zone

Patentee after: Wenzhou Haoyunlai Valve Technology Co., Ltd

Address before: 325102 No. 1 East Road, Sanjiang street, Yongjia County, Zhejiang, China

Patentee before: WENZHOU LUCKY VALVE CO., LTD., CHINA LUOFU VALVE Group

CP03 Change of name, title or address