CN202659916U - High-performance bellows valve special for chlorine gas - Google Patents

High-performance bellows valve special for chlorine gas Download PDF

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Publication number
CN202659916U
CN202659916U CN 201220354622 CN201220354622U CN202659916U CN 202659916 U CN202659916 U CN 202659916U CN 201220354622 CN201220354622 CN 201220354622 CN 201220354622 U CN201220354622 U CN 201220354622U CN 202659916 U CN202659916 U CN 202659916U
Authority
CN
China
Prior art keywords
valve
sealing
rod
special
valve seat
Prior art date
Application number
CN 201220354622
Other languages
Chinese (zh)
Inventor
毛金根
毛春龙
陈善俊
朱义才
Original Assignee
江苏金晟元特种阀门有限公司
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Filing date
Publication date
Application filed by 江苏金晟元特种阀门有限公司 filed Critical 江苏金晟元特种阀门有限公司
Priority to CN 201220354622 priority Critical patent/CN202659916U/en
Application granted granted Critical
Publication of CN202659916U publication Critical patent/CN202659916U/en

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Abstract

The utility model discloses a high-performance bellows valve special for chlorine gas and relates to the field of structures of valves special for chlorine gas. The valve comprises a valve body, a valve seat, a valve clack, a valve clack cover, a valve rod, a valve cover, a bellows component, a packing gland, a transmission nut and a hand wheel, wherein the valve rod comprises a thread section and a bare rod section, a horseshoe-shaped groove is formed at one end, which faces the valve clack, of the valve seat, and a polytetrafluoroethylene sealing layer is fixedly connected with the inside of the horseshoe-shaped groove; and a planar sealing surface and a frustum-shaped sealing surface are formed at one end, which faces the valve seat, of the valve clack, and a stellite alloy layer is surfaced on the planar sealing surface and the frustum-shaped sealing surface of the valve clack, and is matched with the polytetrafluoroethylene sealing layer on the surface of the valve seat. The valve clack and the valve seat have a conical and planar sealing structure, the conical sealing is used at the beginning, and a plane can also coincide with the valve seat after the valve is used for a certain period of time, so that the effect of conical and planar double sealing is achieved, and the sealing is automatically compensated. The valve is leak-free, has good sealing performance, and can be safely and reliably used.

Description

The high-performance corrugated tube valve special for chlorine
Technical field
The utility model relates to the structure field of special valve for chlorine.
Background technique
In the past, the bellows stop valve of chemical industry is generally the general common valve of sealability, such valve is not possess special-purpose characteristics on material or structure, and the sealability that respectively seals the position of this valve is unstable on the one hand, can not stop well dielectric leakage; On the other hand under the poisonous and hazardous process conditions of burn into, poor sealing performance often, easily leak, housing is easily bored a hole, thereby the bellows valve whole service life that causes easy to wear is short, can not satisfy the specific (special) requirements of permanently effective fed sheet of a media, and poisonous medium is in case leakage can bring very large harm to surrounding enviroment and personal safety.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, a kind of high-performance corrugated tube valve special for chlorine of good seal performance to be provided.
The purpose of this utility model is achieved in that the high-performance corrugated tube valve special for chlorine, comprise valve body, valve seat, flap, valve clack cover, valve rod, valve gap, bellows component, Gland, transmission nut and handwheel, described valve rod comprises thread section and polished rod section, described valve seat arranges the horse shoe shaped groove towards an end of flap, is fixedly connected with the teflon seal layer in the horse shoe shaped groove; Described flap arranges plane sealing face and taper type sealing surface towards an end of valve seat, and at plane sealing face and the taper type sealing surface weld deposit Si Taili hard alloy layer of flap, the Si Taili hard alloy layer matches with the teflon seal layer of valve base surface.
The thread section of valve rod of the present utility model and polished rod section disjunctor arrange.
Multistage V-seal filler is set between the upper end of bellows component of the present utility model and the valve rod, and multistage V-seal filler is arranged on the below of Gland.
Between valve body of the present utility model and the valve gap guiding groove is set, polytetrafluoroethylene sealing gasket is set in the guiding groove.
The utlity model has following characteristics: 1, valve seat is provided with the horse shoe shaped groove, the integral sintered teflon of compression moulding in the groove, and the flap end is provided with taper and plane sealing surface, upper surface build-up welding Si Taili cemented carbide.Flap and valve seat adopt cone, plane sealing structure, and just having begun is conical surface seal, use a period of time back plane also to begin to coincide, and reach the effect of cone, plane double seal, the sealing auto-compensation.Without leakage, good seal performance, safe and reliable.
2, valve rod is designed to integrated type, utilize Stem Mut to make all-in-one-piece valve rod in whole opening-closing process, only do vertical displacement movement, thereby avoided passing by split type valve rod in opening-closing process, the huge friction force that produces because of the rotation of upper valve rod, and bellows is produced reverse and reduce the defective in the working life of bellows.Switching moment is little, has greatly increased the working life of bellows.In whole valve, bellows plays first sealing, and the second sealing that recurs of multiple V-type filler has increased the reliability and stability of sealability on the valve greatly.
3, valve body adopts guiding groove with being connected of valve gap, and the Placement of built-in polytetrafluoroethylene sealing gasket prevents that effectively the middle flange bolt that pipeline pressure fluctuation or difference variation cause from becoming flexible, and causes the possibility of middle flange leakage.
The usability of double sealing structure Reliable guarantee valve of the present utility model, the working life of all-in-one-piece stem structure Reliable guarantee bellows, thus guaranteed the sustainable operation of equipment pipeline, reach sealability stable, long service life.The valve housing material adopts the Corrosion Resisting Steel (carbon cast steel interpolation corrosion resistant alloy) of company's independent development, reaches corrosion-resistant, and is safe and reliable without perforation, and long service life.Solved the past common valve perishable, housing perforation, poor sealing performance, the difficult problem that working life is short.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Among the figure, 1 valve body, 2 valve seats, 2-1 horse shoe shaped groove, 3 flaps, 3-1 plane sealing face, 3-2 taper type sealing surface, 4 valve clack covers, 5 polytetrafluoroethylene sealing gaskets, 6 valve gaps, 7 bellows components, 8 valve rods, the 8-1 thread section, 8-2 polished rod section, 9 multistage V-seal fillers, 10 Glands, 11 transmission nuts, 12 handwheels, 13 teflon seal layers, 14 Si Taili hard alloy layers, 15 guiding grooves.
Embodiment
As shown in Figure 1, be the high-performance corrugated tube valve special for chlorine, comprise valve body 1, the valve body 1 interior valve seat 2 that arranges, the top of valve body 1 connects valve gap 6, between valve body 1 and the valve gap 6 guiding groove 15 is set, the guiding groove 15 interior polytetrafluoroethylene sealing gaskets 5 that arrange.Place valve rod 8 on the valve gap 6, valve rod 8 comprises thread section 8-1 and polished rod section 8-2, and the thread section 8-1 of valve rod 8 and polished rod section 8-2 disjunctor arrange.One end of the valve rod 8 in the lid 1 connects flap 3, and the top of flap 3 connects valve clack cover 4, and valve seat 2 arranges horse shoe shaped groove 2-1 towards an end of flap 3, is fixedly connected with teflon seal layer 13 in the horse shoe shaped groove 2-1.Flap 3 arranges plane sealing face 3-1 and taper type sealing surface 3-2 towards an end of valve seat 2, at plane sealing face 3-1 and the taper type sealing surface 3-2 built-up welding Si Taili hard alloy layer 14 of flap 3, Si Taili hard alloy layer 14 matches with the teflon seal layer 13 on valve seat 2 surfaces.Between valve rod 8 and valve gap 6 bellows component 7 is set, multistage V-seal filler 9 is set between the upper end of bellows component 7 and the valve rod 8, the top of multistage V-seal filler 9 arranges Gland 10, and Gland 10 is connected with valve gap 6 by bolt.The upper end of screw rod 8 be threaded transmission nut 11 and handwheel 12.

Claims (4)

1. high-performance corrugated tube valve special for chlorine, comprise valve body, valve seat, flap, valve clack cover, valve rod, valve gap, bellows component, Gland, transmission nut and handwheel, described valve rod comprises thread section and polished rod section, it is characterized in that: described valve seat arranges the horse shoe shaped groove towards an end of flap, is fixedly connected with the teflon seal layer in the horse shoe shaped groove; Described flap arranges plane sealing face and taper type sealing surface towards an end of valve seat, and at plane sealing face and the taper type sealing surface weld deposit Si Taili hard alloy layer of flap, the Si Taili hard alloy layer matches with the teflon seal layer of valve base surface.
2. high-performance corrugated tube valve special for chlorine according to claim 1 is characterized in that: the thread section of described valve rod and the setting of polished rod section disjunctor.
3. high-performance corrugated tube valve special for chlorine according to claim 1, it is characterized in that: multistage V-seal filler is set between the upper end of described bellows component and the valve rod, and multistage V-seal filler is arranged on the below of Gland.
4. high-performance corrugated tube valve special for chlorine according to claim 1 is characterized in that: between described valve body and the valve gap guiding groove is set, polytetrafluoroethylene sealing gasket is set in the guiding groove.
CN 201220354622 2012-07-22 2012-07-22 High-performance bellows valve special for chlorine gas CN202659916U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220354622 CN202659916U (en) 2012-07-22 2012-07-22 High-performance bellows valve special for chlorine gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220354622 CN202659916U (en) 2012-07-22 2012-07-22 High-performance bellows valve special for chlorine gas

Publications (1)

Publication Number Publication Date
CN202659916U true CN202659916U (en) 2013-01-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220354622 CN202659916U (en) 2012-07-22 2012-07-22 High-performance bellows valve special for chlorine gas

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CN (1) CN202659916U (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104279358A (en) * 2013-07-08 2015-01-14 北京精密机电控制设备研究所 High-temperature and high-pressure fuel gas safety valve
CN104696585A (en) * 2015-03-30 2015-06-10 南通市天源阀门制造有限公司 Multi-protection corrugated pipe stop valve for chlorine
CN105443783A (en) * 2016-01-31 2016-03-30 山东莱德机械有限公司 Self-sealing stop valve
CN108167451A (en) * 2018-02-08 2018-06-15 江苏金晟元特种阀门股份有限公司 Corrugated pipe chlorine Special cut-off valve
CN108167462A (en) * 2018-02-08 2018-06-15 江苏金晟元特种阀门股份有限公司 Corrugated pipe chlorine dedicated regulation valve
WO2018152947A1 (en) * 2017-02-24 2018-08-30 江苏金晟元特种阀门股份有限公司 Pneumatic fluorine-lined corrugated pipe single-seat regulating valve
CN110220000A (en) * 2019-05-21 2019-09-10 上海航天设备制造总厂有限公司 A kind of valve hard sealing structure of the spare encapsulation scheme of band

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104279358A (en) * 2013-07-08 2015-01-14 北京精密机电控制设备研究所 High-temperature and high-pressure fuel gas safety valve
CN104696585A (en) * 2015-03-30 2015-06-10 南通市天源阀门制造有限公司 Multi-protection corrugated pipe stop valve for chlorine
CN105443783A (en) * 2016-01-31 2016-03-30 山东莱德机械有限公司 Self-sealing stop valve
CN105443783B (en) * 2016-01-31 2018-06-29 山东莱德管阀有限公司 Self-sealing stop valve
WO2018152947A1 (en) * 2017-02-24 2018-08-30 江苏金晟元特种阀门股份有限公司 Pneumatic fluorine-lined corrugated pipe single-seat regulating valve
CN108167451A (en) * 2018-02-08 2018-06-15 江苏金晟元特种阀门股份有限公司 Corrugated pipe chlorine Special cut-off valve
CN108167462A (en) * 2018-02-08 2018-06-15 江苏金晟元特种阀门股份有限公司 Corrugated pipe chlorine dedicated regulation valve
CN110220000A (en) * 2019-05-21 2019-09-10 上海航天设备制造总厂有限公司 A kind of valve hard sealing structure of the spare encapsulation scheme of band

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