CN2627293Y - Fluorine lining plastic corrugated tube total sealed-regulating valve - Google Patents

Fluorine lining plastic corrugated tube total sealed-regulating valve Download PDF

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Publication number
CN2627293Y
CN2627293Y CN 03259499 CN03259499U CN2627293Y CN 2627293 Y CN2627293 Y CN 2627293Y CN 03259499 CN03259499 CN 03259499 CN 03259499 U CN03259499 U CN 03259499U CN 2627293 Y CN2627293 Y CN 2627293Y
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CN
China
Prior art keywords
valve
spool
lined
bellows
rod
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Expired - Lifetime
Application number
CN 03259499
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Chinese (zh)
Inventor
周庆男
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周庆男
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Application filed by 周庆男 filed Critical 周庆男
Priority to CN 03259499 priority Critical patent/CN2627293Y/en
Application granted granted Critical
Publication of CN2627293Y publication Critical patent/CN2627293Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provided a full sealing regulating valve with fluorine plastic corrugated pipe, relates to an anti-corrosion regulating valve, which is applied to the pneumatic or power-driven anti-corrosion regulating valve. The valve comprises: a valve body, a valve body connecting sleeve, a valve core assembly, and an executive mechanism. The valve core assembly consists of a valve core, a valve rod, a connecting screw rod, and a corrugated pipe. The valve body upper part is equipped with a valve body connecting sleeve, the valve core in the valve core assembly is matched with a valve seat in the valve body inner chamber, and the connecting screw rod in the valve core assembly is connected with the executive mechanism, which is characterized in that: the valve body and the inner chamber wall of the valve body connecting sleeve are equipped with a screw thread groove and lined with fluorine plastic layer; the valve core and the valve rod are united into one body, which is also lined with the fluorine plastic layer, the corrugated pipe is sheathed on the valve rod outer part, the corrugated pipe upper end is tightly connected with the valve core and the valve rod through the connecting screw rod, thereby making the valve core, the valve rod, the corrugated pipe, and the connecting screw rod combine into one body and realizing full sealing. The corrugated pipe is composed of TFM PTFE modification plastic.

Description

The hermetically sealed modulating valve of lined with fluoroplastic bellows
Technical field
What the hermetically sealed modulating valve of the utility model lined with fluoroplastic bellows related to is a kind of anticorrosion modulating valve, is suitable for to make pneumatic, electronic anticorrosion modulating valve.
Background technique
Existing modulating valve structure is to be furnished with the spool assembly parts by the valve seat place between importing and exporting at valve fluid, connects actuator by the valve rod in the spool assembly parts and moves up and down, realize between spool, the valve seat unlatching, close, reach the requirement of regulating rate-of flow.At present in order to prevent to be in the valve rod seepage of medium from the spool assembly parts under the pipeline pressure state, usually adopt graphite packing to be sealed at the valve rod place, because valve rod and packing seal director time move up and down friction in the working procedure, cause wearing and tearing, can't solve the medium leakage problems.A kind of pneumatic lined with fluoroplastic sylphon seal modulating valve is arranged now, adopt sylphon seal, the bellows of this modulating valve is enclosed within on the valve rod, and valve rod is connected with spool by bellows one end boss and spool groove interference fit and the bellows conical surface and spool groove cone match realizes spool and valve stem seal.But the combined method of this lined with fluoroplastic sylphon seal modulating valve causes that because of the valve rod time that moves up and down spool follows the valve rod joint loosening after long easily, cause sealing invalid, make have corrosive fluid in the valve still can be owing to spool leaks out with the loosening of valve rod, thereby corrode whole valve, influence the life-span that valve uses.In addition, the thermoplastic mould pressing process that existing lined with fluoroplastic modulating valve inner lining fluoroplastics adopts, because the body cavity smoother before lined with fluoroplastic, long back of time is because the pressure and temp variation, the fluorine that causes liner is moulded layer and body cavity separation, hulling, cause anticorrosion inefficacy, make aggressive medium enter body cavity and corrode valve, can influence the working life of valve equally.
Summary of the invention
The purpose of this utility model is to provide a kind of lined with fluoroplastic bellows hermetically sealed modulating valve at above-mentioned deficiency.Valve rod and spool adopt integrated, with bellows integral sealing, good seal performance, and can seepage.The body cavity wall is provided with thread groove, makes the hot pressing lined with fluoroplastic bed of material strengthen adhesion, is difficult for shelling, prolongs valve working life.
The hermetically sealed modulating valve of lined with fluoroplastic bellows is to adopt following scheme to realize: the hermetically sealed modulating valve structure of lined with fluoroplastic bellows comprises that valve body, valve body meet cover, spool assembly parts, actuator; The spool assembly parts is made up of spool, valve rod, bellows, connecting screw rod.The valve body upper unit has valve body to connect cover, connecting screw rod in the spool assembly parts connects with actuator, spool in the spool assembly parts cooperates with the valve seat in the body cavity, it is characterized in that: valve body, valve body connect the cover internal chamber wall and are provided with thread groove, are lined with fluoroplastics layer; Spool, valve rod are integrated, are lined with fluoroplastics layer equally, and bellows is sleeved on the valve rod outside, and the upper end of bellows closely is connected with spool, valve rod by connecting screw rod, and spool, valve rod, bellows, connecting screw rod are combined into one, and realize hermetically sealed.
Body cavity, the valve body of the hermetically sealed modulating valve of lined with fluoroplastic bellows connects cover inner chamber and spool, the valve rod medium is lined with the fluoroplastics layer lining through the position, and connects the cover inner chamber at valve body, valve body and be provided with thread groove, after be lined with the fluoroplastics layer lining.Strengthen the adhesion of lined with fluoroplastic layer, avoid the plastic lining layer separation, hulling.
Spool, the valve rod of the hermetically sealed modulating valve of lined with fluoroplastic bellows are integrated, by connecting screw rod the same spool of bellows, valve rod are closely linked into an integrated entity, and be hermetically sealed.
The bellows of the hermetically sealed modulating valve of lined with fluoroplastic bellows can adopt the polytetrafluoroethylmodified modified plastics of TFM to constitute.The ductility of TFM adopts the bellows of this manufacture of materials phenomenon of rupture can not take place than the strong several times of other tetrafluoroethylene.
Connect the cover internal chamber wall at valve body, valve body and can be provided with thread groove, inner lining fluoroplastics lining then is because internal chamber wall has thread groove, make the fluoroplastics layer of liner can be embedded in the thread groove, strengthen the adhesion of lined with fluoroplastic layer, make valve in use as when running into negative pressure, the lined with fluoroplastic layer is difficult for the sucking-off shelling.
During the work of the hermetically sealed modulating valve of lined with fluoroplastic bellows by actuator drive valve rod, spool moves up and down, realize between spool and the valve seat unlatching, close, reach the purpose of regulating rate-of flow.Because sylphon seal is sleeved on valve rod, spool outside, effect lower compression in actuator stretches, guarantee that valve rod can normally move up and down, because spool is integrated with valve rod, the valve rod outside is with bellows again, valve rod is isolated fully with the actuator joint, the bellows material is selected the polytetrafluoroethylmodified modified plastics of TFM again for use, TFM is than the strong several times of ductility of PTFE tetrafluoroethylene commonly used, be difficult for taking place phenomenon of rupture, guaranteed that like this medium can not leak out the corrosion valve, thereby prolonged the working life of valve greatly.
Description of drawings
Below with reference to accompanying drawing the hermetically sealed modulating valve of the utility model lined with fluoroplastic bellows is described further.
Fig. 1 is the hermetically sealed modulating valve structural representation of lined with fluoroplastic bellows.
Embodiment
With reference to accompanying drawing 1, the hermetically sealed modulating valve structure of lined with fluoroplastic bellows comprises that valve body 13, valve body meet cover 15, spool assembly parts, spool 1, actuator 11; Valve seat 14 place's devices have spool 1, spool assembly parts in the valve body 13, the spool assembly parts is made up of valve rod 12, bellows 4, valve rod 12 tops connect actuator 11 by connecting screw rod 10, actuator 11 can adopt pneumatic actuator, electric actuator etc., indicator panel 9 is equipped with on valve rod 12 tops, the size of indication regulated quantity is equipped with stuffing box packing pressing plate 7 on valve rod 12 tops, and pressing plate 7 adopts bolts 8 to compress to be connected valve body and connects cover 15 tops.Valve body 13 upper units have valve body to connect cover 15, there is connecting screw rod 3 valve rod 12 lower ends, valve rod 12 closely is connected with spool 1 by connecting screw rod 3, or valve rod and spool are arranged to one, be packaged with lined with fluoroplastic cover 16 in bellows 4 and spool 1 joint, or the outside lined with fluoroplastic cover of bellows 4 lower ends and spool closely is connected by screw thread 2, and spool 1, valve rod 12, bellows 4 seal combination are integral, and also can adopt Unitarily molded envelope to be assembled into one.Connect cover 15 internal chamber walls at valve body 13, valve body and be provided with screw groove 5, connect cover 15 inner chambers at valve body 13, valve body and be lined with the thick fluoroplastics layer lining 6 of 2.5mm, when connecing cover 15 inner chamber hot pressing lined with fluoroplastic, valve body 13, valve body make the lined with fluoroplastic bed of material 6 tightly be embedded in the thread groove, strengthen valve body, valve body and connect the adhesion that overlaps interior lined with fluoroplastic layer, make inner chamber and lined with fluoroplastic layer difficult drop-off, increase the service life.All be lined with the fluoroplastics layer lining at valve seat 14, valve rod 12, spool 1 and valve fed sheet of a media (fluid) through the position.The bellows 4 of the hermetically sealed modulating valve of lined with fluoroplastic bellows can adopt the polytetrafluoroethylmodified modified plastics of TFM to constitute.The ductility of TFM adopts the bellows 4 of this manufacture of materials phenomenon of rupture can not take place than the strong several times of other tetrafluoroethylene.

Claims (4)

1, the hermetically sealed modulating valve of a kind of lined with fluoroplastic bellows comprises that valve body, valve body meet cover, spool assembly parts, actuator; The spool assembly parts is made up of spool, valve rod, bellows, connecting screw rod, the valve body upper unit has valve body to connect cover, connecting screw rod in the spool assembly parts connects with actuator, spool in the spool assembly parts cooperates with the valve seat in the body cavity, it is characterized in that: valve body, valve body connect the cover internal chamber wall and are provided with thread groove, are lined with fluoroplastics layer; Spool, valve rod are integrated, are lined with fluoroplastics layer equally, and bellows is sleeved on the valve rod outside, and the upper end of bellows closely is connected with spool, valve rod by connecting screw rod, and spool, valve rod, bellows, connecting screw rod are combined into one, and be hermetically sealed.
2, the hermetically sealed modulating valve of lined with fluoroplastic bellows according to claim 1, it is characterized in that body cavity, valve body connect cover inner chamber and spool, the valve rod medium is lined with fluoroplastics lining through the position, and connect the cover inner chamber at valve body, valve body and be provided with thread groove, be lined with the fluoroplastics layer lining.
3, the hermetically sealed modulating valve of lined with fluoroplastic bellows according to claim 1 is characterized in that spool, valve rod are integrated, by connecting screw rod the same spool of bellows, valve rod is closely linked into an integrated entity, and is hermetically sealed.
4, the hermetically sealed modulating valve of lined with fluoroplastic bellows according to claim 1 is characterized in that bellows adopts the polytetrafluoroethylmodified modified plastics of TFM to constitute.
CN 03259499 2003-07-11 2003-07-11 Fluorine lining plastic corrugated tube total sealed-regulating valve Expired - Lifetime CN2627293Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03259499 CN2627293Y (en) 2003-07-11 2003-07-11 Fluorine lining plastic corrugated tube total sealed-regulating valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03259499 CN2627293Y (en) 2003-07-11 2003-07-11 Fluorine lining plastic corrugated tube total sealed-regulating valve

Publications (1)

Publication Number Publication Date
CN2627293Y true CN2627293Y (en) 2004-07-21

Family

ID=34254865

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 03259499 Expired - Lifetime CN2627293Y (en) 2003-07-11 2003-07-11 Fluorine lining plastic corrugated tube total sealed-regulating valve

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CN (1) CN2627293Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100380028C (en) * 2005-06-29 2008-04-09 上海自动化仪表股份有限公司 Nuclear breathing regulating valve for helium test system
CN101806364A (en) * 2010-05-10 2010-08-18 江苏金晟元特种阀门有限公司 Maintenance-free corrugated tube valve special for chlorine
CN104500831A (en) * 2014-07-15 2015-04-08 沈永增 Special strong-poison composite bellows valve
CN104676021A (en) * 2015-01-16 2015-06-03 苏州东山防腐仪表阀门有限公司 Valve component and split fluorine-lined plastic regulating valve
CN104676011A (en) * 2015-01-16 2015-06-03 苏州东山防腐仪表阀门有限公司 Integrated plastic adjusting valve with fluorine lining
WO2018153203A1 (en) * 2017-02-24 2018-08-30 江苏金晟元特种阀门股份有限公司 Electric fluorine-lined corrugated pipe single-seat regulating valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100380028C (en) * 2005-06-29 2008-04-09 上海自动化仪表股份有限公司 Nuclear breathing regulating valve for helium test system
CN101806364A (en) * 2010-05-10 2010-08-18 江苏金晟元特种阀门有限公司 Maintenance-free corrugated tube valve special for chlorine
CN104500831A (en) * 2014-07-15 2015-04-08 沈永增 Special strong-poison composite bellows valve
CN104676021A (en) * 2015-01-16 2015-06-03 苏州东山防腐仪表阀门有限公司 Valve component and split fluorine-lined plastic regulating valve
CN104676011A (en) * 2015-01-16 2015-06-03 苏州东山防腐仪表阀门有限公司 Integrated plastic adjusting valve with fluorine lining
WO2018153203A1 (en) * 2017-02-24 2018-08-30 江苏金晟元特种阀门股份有限公司 Electric fluorine-lined corrugated pipe single-seat regulating valve

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CX01 Expiry of patent term

Expiration termination date: 20130711

Granted publication date: 20040721