CN103629373A - High-class soft-sealing safety butterfly valve - Google Patents

High-class soft-sealing safety butterfly valve Download PDF

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Publication number
CN103629373A
CN103629373A CN201310651322.8A CN201310651322A CN103629373A CN 103629373 A CN103629373 A CN 103629373A CN 201310651322 A CN201310651322 A CN 201310651322A CN 103629373 A CN103629373 A CN 103629373A
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CN
China
Prior art keywords
valve
valve rod
butterfly
butterfly plate
plate
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.)
Granted
Application number
CN201310651322.8A
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Chinese (zh)
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CN103629373B (en
Inventor
范全军
曹士芳
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.)
Tianjin FSK Flow Control Equipment Co Ltd
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Tianjin FSK Flow Control Equipment Co Ltd
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Publication date
Application filed by Tianjin FSK Flow Control Equipment Co Ltd filed Critical Tianjin FSK Flow Control Equipment Co Ltd
Priority to CN201310651322.8A priority Critical patent/CN103629373B/en
Publication of CN103629373A publication Critical patent/CN103629373A/en
Application granted granted Critical
Publication of CN103629373B publication Critical patent/CN103629373B/en
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    • 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
    • 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
    • F16K1/2268Sealing means for the axis of rotation
    • 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
    • F16K1/32Details
    • 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
    • F16K1/32Details
    • F16K1/48Attaching valve members to screw-spindles

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

The invention discloses a high-class soft-sealing safety butterfly valve which comprises a driving mechanism, a valve body, a butterfly plate, a valve cover and valve rods which penetrate through a through hole in the valve cover for being connected with an external driving mechanism, wherein the butterfly plate is an encapsulated spherical plate; the valve body and the butterfly plate are correspondingly provided with annular spherical grooves; the valve rods are arranged on the center line of the butterfly plate. The butterfly valve disclosed by the invention can be used in a high-class working condition and guarantee safety and sealing; furthermore, the spherical plate is matched with the spherical grooves; the spherical grooves are directly formed in the valve body in a fine processing manner; the overall fitting property is high, and the stability is high; when the pressure is increased, the butterfly plate is stressed by a medium and deflects to the medium flowing direction to a certain extent, and at the moment, the interference fit between the butterfly plate and the sealing spherical surface of the valve body is enhanced on one side; the butterfly plate is upwards lifted; due to the spherical sealing structure, the sealing specific pressure on a valve plate and the valve body is automatically increased, so that sealing can be guaranteed.

Description

The safe butterfly valve of high pound level soft seal
Technical field
The present invention relates to butterfly valve technical field, particularly relate to the safe butterfly valve of a kind of high pound level soft seal.
Background technique
Soft sealing butterfly valve is for realizing the device of pipe-line system connection and cut-out and flow control, obtaining applying very widely in many fields such as petrochemical industry, metallurgy, water power and urban water supply and sewerage.In known soft sealing butterfly valve technology, its structural type has center line and three eccentric two kinds of structures.Sealing material is generally rubber, tetrafluoroethylene etc.
What soft sealing butterfly valve was the most common is centre-pivoted butterfly valve.Centre-pivoted butterfly valve is that butterfly plate and rubber seal realize sealing by interference fit, this valve mechanism is simple, flow resistance is little but have following shortcoming, the tolerance of interference fit is difficult to control, while and for example installing pipeline bolt exert oneself tension make two ends rubber seal be extruded in the middle of valve pocket and using process in temperature raise and occur that the factors such as thermal expansion all will cause butterfly plate to be stuck, make the valve cannot normal running.
For overcoming the problems referred to above, Chinese patent application publication No. CN102954233A the present invention relates to a kind of high-pressure soft sealing butterfly valve, comprise valve body, valve rod, butterfly plate, driving mechanism, the two ends up and down of described valve rod are fixed in valve body lumen, described butterfly plate is fixed on valve rod, also comprise O RunddichtringO, described butterfly plate outer ring offers a dovetail groove, and described O RunddichtringO is placed in the dovetail groove of butterfly plate outer ring.
But along with the aggravation of market competition, the application of butterfly valve aspect communal facility received very large concern.The mankind are more and more higher to the requirement of valve.No matter the Shi U.S., or in Europe, people regard UL/FM as the safest certification body to valve as.Adopt the butterfly valve of said structure still can not meet UL/FM authentication, existing butterfly valve is all being short of aspect high pound stage pressure to some extent.
Summary of the invention
The object of the invention is for the technological deficiency existing in prior art, and a kind of safe butterfly valve of high pound level soft seal that improves the working pressure of valve is provided.
For realizing the technological scheme that object of the present invention adopts, be:
The safe butterfly valve of high pound level soft seal, comprises driving mechanism, valve body, butterfly plate, valve gap and valve rod, described butterfly plate is encapsulate spherical plate, described valve body and butterfly plate are provided with three-dimensional ring spherical groove accordingly, and described valve rod is arranged on the center line of butterfly plate.
Described valve rod comprises upper valve rod and lower valve rod, the upper and lower two ends of described butterfly plate and upper valve rod and lower valve rod corresponding part are formed with sphere connection area, on described connection area, be formed with respectively the attachment hole corresponding with described upper valve rod or lower valve rod, on described valve body, be formed with corresponding spherical groove with butterfly plate connection area.
Described upper valve rod upper end is the ladder axis structure that diameter diminishes, larger diameter end is inserted in the attachment hole of butterfly plate matchingly to be in transmission connection, between described upper valve rod bottom and valve hole, be provided with axle sleeve, between described upper valve rod end and valve hole, be provided with sealing mechanism, described upper sealing mechanism comprises by jump ring and the spacing stuffing box gland of the upper valve rod shaft shoulder, and a plurality of seal rings that are arranged on upper sleeve gasket inner side and outside.
Described lower valve rod lower end is the ladder axis structure that diameter diminishes, and the lower through-hole of described valve body is the corresponding ladder axis structure diminishing of diameter, and the shaft shoulder location of two multidiameter shafts can effectively avoid lower valve rod to go out.
Between described lower valve rod bottom and the through hole of valve body, be provided with lower seal mechanism, by the lower sleeve gasket of the seam shoulder at jump ring and valve body lower through-hole place location, and two seal rings that are separately positioned on lower sleeve gasket inner side and outside.
The oral area of described lower through-hole is provided with the bottom of the quality of rubber materials of interference fit with it.
Compared with prior art, the invention has the beneficial effects as follows:
Butterfly valve of the present invention can be used for the operating mode of high pound level, and assurance safety, sealing, the spherical groove that adopts spherical plate and match coordinates, spherical groove directly on valve body fine finishing make, the good stability of overall co-ordination is high, when pressure improves, butterfly plate is subject to the pressure of medium and has certain skew to media flow direction, at this moment strengthen with the side that is interference fitted in of valve seal sphere, butterfly plate upwards lifts, spheric sealing configuration strengthens the seal pressure of valve plate and valve body automatically, thereby guarantee sealing, namely the quality of product is guaranteed, the safe butterfly valve of high pound level soft seal of the present invention, it is first product authenticating by UL/FM of China.
Accompanying drawing explanation
Figure 1 shows that the cross section structure schematic diagram that butterfly valve of the present invention is vertical with valve plate
Figure 2 shows that butterfly valve internal structure schematic diagram;
Cross section structure schematic diagram while Figure 3 shows that butterfly valve body unloaded butterfly plate;
Fig. 4 is the cross section structure schematic diagram of upper valve shaft joint;
Fig. 5 is the cross section structure schematic diagram of lower valve shaft joint.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As Figure 1-5, the safe butterfly valve of high pound level soft seal of the present invention comprises driving mechanism, valve body 1, butterfly plate 2, be integrally formed with above-mentioned valve body and center is formed with the valve gap 10 of through hole and through the through hole of described valve gap the valve rod being connected with external drive mechanism driving, described valve rod is arranged on the center line of butterfly plate 2, described butterfly plate is encapsulate spherical plate, wherein, described encapsulate spherical plate comprises spherical-surface substrate and is coated on the rubber layer on described spherical-surface substrate, described spherical plate is that the side of fingerboard is sphere, wherein, described butterfly plate is formed with sphere connection area with valve rod joint and coordinates intensity to increase, on described connection area, be formed with respectively the square attachment hole corresponding with valve rod, described valve body and butterfly plate are provided with ring-type spherical groove accordingly, described ring-type spherical groove and spherical plate are same sphere, it comprises the end spherical groove 3 that upper and lower two ends are corresponding with sphere connection area and two side spherical grooves 4 that connect two ends spherical groove, described end spherical groove center is formed with the through hole 11 that allows valve rod to pass, described end spherical groove and side spherical groove are formed in the ring-type spherical groove on same sphere.
The spherical groove cooperation that the present invention adopts spherical plate and matches, spherical groove directly on valve body fine finishing make, the good stability of overall co-ordination is high, when pressure improves, butterfly plate is subject to the pressure of medium and has certain skew to media flow direction, at this moment strengthen with the side that is interference fitted in of valve seal sphere, butterfly plate upwards lifts, spheric sealing configuration strengthens the seal pressure of valve plate and valve body automatically, thereby guarantee sealing, namely the quality of product is guaranteed, the safe butterfly valve of high pound level soft seal of the present invention, it is first product authenticating by UL/FM of China.
Specifically, described valve rod comprises upper valve rod 5 and lower valve rod 6, described upper valve rod and lower valve rod insert in the square attachment hole of butterfly plate accordingly, upper valve rod and butterfly plate are connected and are realized actuate valve stem and open and close butterfly plate by side, and lower valve rod upper end portion only needs that in the attachment hole of corresponding insertion butterfly plate bottom, positioning instant can.Described upper valve rod upper end is the ladder axis structure that diameter diminishes, between the bottom of described upper valve rod larger diameter end and valve gap through hole, be provided with axle sleeve 8, between the upper end portion of described upper valve rod smaller diameter end and stem through-hole, be provided with sealing mechanism 7, described upper sealing mechanism comprises by jump ring and the spacing stuffing box gland of the upper valve rod shaft shoulder, and two seal rings that are separately positioned on upper sleeve gasket inner side and outside.Adopt axle sleeve and the spaced mode of upper sealing configuration can effectively strengthen the intensity of upper valve rod, improve its ability to bear.
Described lower valve rod lower end is the ladder axis structure that diameter diminishes, and the lower through-hole of described valve body is the corresponding ladder axis structure diminishing of diameter, utilizes the shaft shoulder location of multidiameter shaft effectively to avoid lower valve rod to go out, and plays position-limiting action.Simultaneously, between described lower valve rod bottom and the through hole of valve body, be provided with lower seal mechanism 9, described lower seal mechanism comprises by the lower sleeve gasket of the seam shoulder at jump ring and valve body lower through-hole place location, and two seal rings that are separately positioned on lower sleeve gasket inner side and outside, simultaneously, at the oral area of described lower through-hole, be provided with the bottom 12 of quality of rubber materials, described bottom 12 and the lower through-hole interference fit of valve body are to avoid dust or impurity to enter.
Above-mentioned is to take two-part valve rod to carry out exemplary illustrated as example, it is to be noted, the present invention designs applicable to shaft type equally, described valve rod runs through described butterfly plate, the upper and lower two ends of described butterfly plate are connected with valve rod and are formed with sphere connection area everywhere, on described valve body, are formed with spherical groove with sphere connection area.Itself and structure are similar to the above embodiments, at this, no longer launch to describe.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (6)

1. the safe butterfly valve of high pound level soft seal, is characterized in that, comprises driving mechanism, valve body, butterfly plate, and valve rod, described butterfly plate is encapsulate spherical plate, and described valve body and butterfly plate are provided with three-dimensional ring spherical groove accordingly, and described valve rod is arranged on the center line of butterfly plate.
2. the safe butterfly valve of high pound level soft seal as claimed in claim 1, it is characterized in that, described valve rod comprises upper valve rod and lower valve rod, the upper and lower two ends of described butterfly plate and upper valve rod and lower valve rod corresponding part are formed with sphere connection area, on described connection area, be formed with respectively the attachment hole corresponding with described upper valve rod or lower valve rod, on described valve body, be formed with corresponding spherical groove with butterfly plate connection area.
3. the safe butterfly valve of high pound level soft seal as claimed in claim 2, it is characterized in that, described upper valve rod upper end is the ladder axis structure that diameter diminishes, larger diameter end is inserted in the attachment hole of butterfly plate matchingly to be in transmission connection, between described upper valve rod bottom and valve hole, be provided with axle sleeve, between described upper valve rod end and valve hole, be provided with sealing mechanism, described upper sealing mechanism comprises by jump ring and the spacing stuffing box gland of the upper valve rod shaft shoulder, and a plurality of seal rings that are arranged on upper sleeve gasket inner side and outside.
4. the safe butterfly valve of high pound level soft seal as claimed in claim 3, it is characterized in that, described lower valve rod lower end is the ladder axis structure that diameter diminishes, and the lower through-hole of described valve body is the corresponding ladder axis structure diminishing of diameter, and the shaft shoulder location of two multidiameter shafts can effectively avoid lower valve rod to go out.
5. the safe butterfly valve of high pound level soft seal as claimed in claim 4, it is characterized in that, between described lower valve rod bottom and the through hole of valve body, be provided with lower seal mechanism, by the lower sleeve gasket of the seam shoulder at jump ring and valve body lower through-hole place location, and two seal rings that are separately positioned on lower sleeve gasket inner side and outside.
6. the safe butterfly valve of high pound level soft seal as claimed in claim 1, is characterized in that, the oral area of described lower through-hole is provided with the bottom of the quality of rubber materials of interference fit with it.
CN201310651322.8A 2013-12-04 2013-12-04 High-class soft-sealing safety butterfly valve Active CN103629373B (en)

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CN201310651322.8A CN103629373B (en) 2013-12-04 2013-12-04 High-class soft-sealing safety butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310651322.8A CN103629373B (en) 2013-12-04 2013-12-04 High-class soft-sealing safety butterfly valve

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CN103629373A true CN103629373A (en) 2014-03-12
CN103629373B CN103629373B (en) 2016-08-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105465383A (en) * 2016-01-08 2016-04-06 无锡科磊阀业有限公司 Eccentric butterfly valve structure with self-compensating function
CN114165607A (en) * 2021-12-13 2022-03-11 建湖县昊辉电力石化机械有限公司 Butterfly valve convenient for flow adjustment and use method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834663A (en) * 1971-12-09 1974-09-10 Jamesbury Corp Metal seat butterfly valve
CN201232755Y (en) * 2008-07-08 2009-05-06 傅慧 Groove joint butterfly valve for disk plate rubber lining
CN201575170U (en) * 2009-12-09 2010-09-08 天津市富赛克阀门有限公司 Groove valve
CN201582409U (en) * 2009-10-29 2010-09-15 天津银河阀门有限公司 Spherical sealing butterfly valve provided with valve plate coated with rubber layer
CN202074055U (en) * 2011-05-18 2011-12-14 浙江欧尼特阀门有限公司 Three-section type two-way sealed high-pressure butterfly valve
CN203686172U (en) * 2013-12-04 2014-07-02 天津富赛克流体控制设备有限公司 High pound grade flexible seal safety butterfly valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834663A (en) * 1971-12-09 1974-09-10 Jamesbury Corp Metal seat butterfly valve
CN201232755Y (en) * 2008-07-08 2009-05-06 傅慧 Groove joint butterfly valve for disk plate rubber lining
CN201582409U (en) * 2009-10-29 2010-09-15 天津银河阀门有限公司 Spherical sealing butterfly valve provided with valve plate coated with rubber layer
CN201575170U (en) * 2009-12-09 2010-09-08 天津市富赛克阀门有限公司 Groove valve
CN202074055U (en) * 2011-05-18 2011-12-14 浙江欧尼特阀门有限公司 Three-section type two-way sealed high-pressure butterfly valve
CN203686172U (en) * 2013-12-04 2014-07-02 天津富赛克流体控制设备有限公司 High pound grade flexible seal safety butterfly valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105465383A (en) * 2016-01-08 2016-04-06 无锡科磊阀业有限公司 Eccentric butterfly valve structure with self-compensating function
CN114165607A (en) * 2021-12-13 2022-03-11 建湖县昊辉电力石化机械有限公司 Butterfly valve convenient for flow adjustment and use method thereof

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CN103629373B (en) 2016-08-24

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