CN104235394A - Butterfly valve - Google Patents

Butterfly valve Download PDF

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Publication number
CN104235394A
CN104235394A CN201310251632.0A CN201310251632A CN104235394A CN 104235394 A CN104235394 A CN 104235394A CN 201310251632 A CN201310251632 A CN 201310251632A CN 104235394 A CN104235394 A CN 104235394A
Authority
CN
China
Prior art keywords
valve
valve body
butterfly
fluoroplastic
rod
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.)
Pending
Application number
CN201310251632.0A
Other languages
Chinese (zh)
Inventor
田洪卫
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.)
Fluoroseal Special Valves (suzhou) Co Ltd
Original Assignee
Fluoroseal Special Valves (suzhou) 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 Fluoroseal Special Valves (suzhou) Co Ltd filed Critical Fluoroseal Special Valves (suzhou) Co Ltd
Priority to CN201310251632.0A priority Critical patent/CN104235394A/en
Publication of CN104235394A publication Critical patent/CN104235394A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226Shaping or arrangements of the sealing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K41/00Spindle sealings
    • F16K41/02Spindle sealings with stuffing-box ; Sealing rings

Abstract

The invention discloses a butterfly valve comprising a valve body. A valve clack, namely a butterfly plate, is arranged in the valve body. A valve cover is arranged on a valve rod on the upper side of the valve body. A valve rod bearing is arranged at the end of the valve rod. Sealing filler and gaskets are arranged on two sides of a valve body path. A valve seat is arranged in the valve body. A handle is mounted on the valve rod. The valve rod is integrated with the butterfly plate and extends from a cavity of the valve body. The valve body, the valve clack and the valve rod are all made of steel and iron materials. The valve seat and liners are made of soft seal materials. The liners made of fluoroplastic are arranged on the interior of the valve body and on the exterior of a sealing face of the butterfly plate. The butterfly valve has the advantages that the processing principle of plasticity of the fluoroplastic is utilized, steel and iron are used to make a shell or internal control components, and the fluoroplastic is arranged in the shell and on the surface, so that steel metal is prevented from directly contacting with highly-corrosive media, and corrosion resistance of the valve is improved.

Description

Butterfly valve
Technical field
The present invention relates to valve field, particularly a kind of lower friction, low wearing and tearing selfsealings lining mould butterfly valve structure.
Background technique
Butterfly valve is the simple modulating valve of a kind of structure, generally includes valve body, valve rod, butterfly plate and valve seat.Butterfly valve open-shut device is a discoidal butterfly plate, rotates in valve body around the axis of himself, thus reaches the object opening and closing or regulate.It has, and structure is simple, volume is little, lightweight, material consumption province, installation dimension is little, and switch is rapid, 90 ° of reciprocating rotatings, the features such as driving moment is little, for blocking, connecting, regulate the medium in pipeline, there is good fluid handling properties and close sealability.Therefore, be widely used in carrying on the pipeline of various corrosivity, non-corrosive fluids medium in the engineering systems such as coal gas, rock gas, liquefied petroleum gas (LPG), town gas, air, chemical industry smelting and generation environment-friendly.
What current butterfly valve seal plane materiel material was conventional has two kinds: metal to metal seal (abbreviation metal sealing) and metal pair non-metal soft material sealing (abbreviation soft seal), the impact of the long-lived machining accuracy of metal sealing, soft seal circle easily realizes tight seal, and work in-process can reduce the requirement to sealing surface machining accuracy.But because flap is metallic material, by the restriction of machining accuracy and roughness, soft seal is is easily worn and torn.
For improving the deficiency in this structure, I takes charge of design studies one lining and moulds butterfly valve, utilizes the excellent properties of fluoroplastic and the structural design of uniqueness, and friction when significantly reducing or eliminate valve opening and closing between sealing pair, improves valve working life.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of butterfly valve, friction when its object is to significantly reduce or eliminate valve opening and closing between sealing pair, improving valve working life.
For achieving the above object, technological scheme of the present invention is as follows:
A kind of butterfly valve, it comprises valve body, and valve inner is provided with flap, and described flap is butterfly plate, and the valve rod place above valve body is provided with valve gap, and valve stem end is provided with stem bearing, and valve body latus rectum both sides are provided with stuffing box packing and pad, and valve seat is placed in valve inner; Valve rod is provided with handle, and described valve rod and butterfly plate are set to one and stretch out in valve body chamber.
Preferably, pad is ring-type arc pad.
Preferably, pad is at least four.
Preferably, the material of described stuffing box packing is fluoroplastic.
By technique scheme, butterfly valve provided by the invention, being lined with at described valve inner and butterfly plate sealing surface outside with fluoroplastic is the lining of material; Utilize the plastic process principle of fluoroplastic, do shell with iron and steel or do internal control, be lining in housing and serve as a contrast and mould in surface.Be used for isolated die metal with this to contact with the direct of strong corrosive medium, improve the decay resistance of valve.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below.
Fig. 1 is structural representation of the present invention.
Wherein: 1, valve body 2, pad 3, butterfly plate 4, valve seat 5, filler 6, valve rod 7, bearing
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is clearly and completely described.
The present embodiment as shown in Figure 1, comprise valve body 1, valve body 1 inside is provided with dish version 3, valve rod 6 and butterfly plate 3 are set to one, pass from valve body 1 axle center, valve rod 6 end above valve body 1 is provided with valve seat 4, has bearing 7 below valve seat 4, valve body 1 both sides are provided with valve stem seal, and described valve stem seal comprises filler 5 and annular arcuation pad 2.Described filler 5 is designed to the conical surface, is adjacent in tapering with valve seat 4.Four described loop arcuation pads 2 combine, and produce certain gap.During work, under pipe interior and sealing load effect, dish version 3 and valve seat 4 are fade-in engaging of gradually going out, and filler 5 and the pad 2 with cone angle coordinate, and make valve seat 4 delay into or delay, and when ensureing sealing, reduce wearing and tearing.
The present embodiment, in order to improve the decay resistance of valve, it is the lining of material that described valve inner and butterfly plate sealing surface outside are lined with fluoroplastic; Its inventive point is the plastic process principle utilizing fluoroplastic, does shell or do internal control with iron and steel, is lining in housing and serves as a contrast to mould in surface.Be used for isolated die metal with this to contact with the direct of strong corrosive medium, improve the decay resistance of valve.
Because the self-lubricating property of fluoroplastic is excellent, when valve opening and closing, utilize the performance of its excellence, reduce the friction factor between butterfly plate and sealing surface of seat, reduce wearing and tearing.
Be provided with flexible pores bearing between valve rod and body top hole wall and bottom hole wall, it is outer and be arranged at the lining of outer internal surface that this pore bearing comprises bearing, and bearing skin is the cylindrical body of a hollow, and its cylindrical wall is provided with some through holes; Lining inwall forms air bubble-shaped depression hole in the outer field lead to the hole site of corresponding bearing, and bearing skin and lining are provided with the breach of an inclination.
Described valve body bore both sides are equipped with valve stem seal, valve stem seal place adopts taper sealing pad and four ring-type arc-shaped pad sheets, cone angle seal ring and valve seat are a cone angle, four ring-type arc-shaped pad sheets are stacked, frictionally automatic-sealed between layers, utilize the elasticity between blade arcuation and pliability, when making valve working, the torque force that valve seat is subject to can be distributed in around valve seat entirety, have elastic force and flexible seal ring assembly can present the shape of valve seat under force, extruding force distributes the locking provided on a kind of bilateral direction tightly uniformly.Thus ensure that sealability, and reduce the wearing and tearing between sealing surface.
The above-mentioned explanation of the disclosed embodiments, enables professional and technical personnel in the field realize or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (4)

1. a butterfly valve, it comprises valve body, and valve inner is provided with flap, described flap is butterfly plate, and the valve rod place above valve body is provided with valve gap, and valve stem end is provided with stem bearing, it is characterized in that: valve body latus rectum both sides are provided with stuffing box packing and pad, and valve seat is placed in valve inner; Valve rod is provided with handle, and described valve rod and butterfly plate are set to one and stretch out in valve body chamber.
2. butterfly valve according to claim 1, is characterized in that, pad is ring-type arc pad.
3. butterfly valve according to claim 2, is characterized in that, pad is at least four.
4. butterfly valve according to claim 3, is characterized in that, the material of described stuffing box packing is fluoroplastic.
CN201310251632.0A 2013-06-24 2013-06-24 Butterfly valve Pending CN104235394A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310251632.0A CN104235394A (en) 2013-06-24 2013-06-24 Butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310251632.0A CN104235394A (en) 2013-06-24 2013-06-24 Butterfly valve

Publications (1)

Publication Number Publication Date
CN104235394A true CN104235394A (en) 2014-12-24

Family

ID=52224038

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310251632.0A Pending CN104235394A (en) 2013-06-24 2013-06-24 Butterfly valve

Country Status (1)

Country Link
CN (1) CN104235394A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104235393A (en) * 2013-06-24 2014-12-24 氟络塞尔特种阀门(苏州)有限公司 Butterfly valve
CN107208810A (en) * 2015-01-27 2017-09-26 株式会社开滋 Lining type butterfly valve

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE828429A (en) * 1974-04-25 1975-10-27 IMPROVEMENTS MADE TO BUTTERFLY VALVES
US4759530A (en) * 1984-11-14 1988-07-26 Neotecha Ag Stem and disc seal construction for butterfly valves
CN2104350U (en) * 1991-05-09 1992-05-13 沈阳变压器厂 valve for transformer
CN201281084Y (en) * 2008-09-23 2009-07-29 厦门奥德森流体控制设备有限公司 Elastic pore bearing for butterfly valve
CN201344269Y (en) * 2008-09-23 2009-11-11 厦门奥德森流体控制设备有限公司 Wafer type butterfly valve
DE19725725B4 (en) * 1997-06-18 2010-01-14 Vag-Armaturen Gmbh butterfly valve
CN101668971A (en) * 2007-04-26 2010-03-10 旭有机材工业株式会社 Valve manufacturing method, and valve
CN201696632U (en) * 2010-04-09 2011-01-05 苏州可邦自控阀业有限公司 Fluorine-plastic lining butterfly valve
CN202418635U (en) * 2012-01-16 2012-09-05 浙江佰通防腐设备有限公司 PFA-lined butterfly valve
CN203322298U (en) * 2013-06-24 2013-12-04 氟络塞尔特种阀门(苏州)有限公司 Butterfly valve
CN104235393A (en) * 2013-06-24 2014-12-24 氟络塞尔特种阀门(苏州)有限公司 Butterfly valve

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE828429A (en) * 1974-04-25 1975-10-27 IMPROVEMENTS MADE TO BUTTERFLY VALVES
US4759530A (en) * 1984-11-14 1988-07-26 Neotecha Ag Stem and disc seal construction for butterfly valves
CN2104350U (en) * 1991-05-09 1992-05-13 沈阳变压器厂 valve for transformer
DE19725725B4 (en) * 1997-06-18 2010-01-14 Vag-Armaturen Gmbh butterfly valve
CN101668971A (en) * 2007-04-26 2010-03-10 旭有机材工业株式会社 Valve manufacturing method, and valve
CN201281084Y (en) * 2008-09-23 2009-07-29 厦门奥德森流体控制设备有限公司 Elastic pore bearing for butterfly valve
CN201344269Y (en) * 2008-09-23 2009-11-11 厦门奥德森流体控制设备有限公司 Wafer type butterfly valve
CN201696632U (en) * 2010-04-09 2011-01-05 苏州可邦自控阀业有限公司 Fluorine-plastic lining butterfly valve
CN202418635U (en) * 2012-01-16 2012-09-05 浙江佰通防腐设备有限公司 PFA-lined butterfly valve
CN203322298U (en) * 2013-06-24 2013-12-04 氟络塞尔特种阀门(苏州)有限公司 Butterfly valve
CN104235393A (en) * 2013-06-24 2014-12-24 氟络塞尔特种阀门(苏州)有限公司 Butterfly valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104235393A (en) * 2013-06-24 2014-12-24 氟络塞尔特种阀门(苏州)有限公司 Butterfly valve
CN107208810A (en) * 2015-01-27 2017-09-26 株式会社开滋 Lining type butterfly valve
CN107208810B (en) * 2015-01-27 2019-06-25 株式会社开滋 Lining type butterfly valve

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C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
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Application publication date: 20141224