CN107701733A - A kind of valve of tilting v-seal structure bidirectional bearing - Google Patents

A kind of valve of tilting v-seal structure bidirectional bearing Download PDF

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Publication number
CN107701733A
CN107701733A CN201711038742.3A CN201711038742A CN107701733A CN 107701733 A CN107701733 A CN 107701733A CN 201711038742 A CN201711038742 A CN 201711038742A CN 107701733 A CN107701733 A CN 107701733A
Authority
CN
China
Prior art keywords
valve
shaped seal
seal ring
ring
valve element
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
CN201711038742.3A
Other languages
Chinese (zh)
Inventor
廖志芳
常永红
王东福
黎文斌
王帅
谢科
张斌
张乐
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.)
Swaziland Valve Ltd By Share Ltd
Original Assignee
Swaziland Valve Ltd By Share 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 Swaziland Valve Ltd By Share Ltd filed Critical Swaziland Valve Ltd By Share Ltd
Priority to CN201711038742.3A priority Critical patent/CN107701733A/en
Publication of CN107701733A publication Critical patent/CN107701733A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift 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
    • F16K1/16—Lift 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
    • F16K1/18—Lift 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
    • F16K1/20—Lift 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 arranged externally of valve member
    • F16K1/2042—Special features or arrangements of the sealing
    • F16K1/205—Special features or arrangements of the sealing the sealing being arranged on the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift 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
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift 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
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment of sealing rings

Abstract

The invention provides a kind of valve of tilting v-seal structure bidirectional bearing, including valve body, valve seat, valve element and valve shaft；Spool end is equipped with V-shaped seal ring by pressure ring and adjusting screw, and V-shaped seal ring includes sealing, clamping part and inner fovea part, and the clamping part both sides of V-shaped seal ring are close to pressure ring and valve element respectively, and sealing contacts with valve seat；In sealed states, there is first residue space between pressure ring and valve element, the second overdose space to the micro movement in water inlet direction is left between valve seat and valve body, pressure ring is provided with aperture, and the inner fovea part of V-shaped seal ring is turned on by first residue space, aperture with delivery port；During valve medium back flow, medium flow into first residue space from aperture and enter V-shaped seal ring to inner fovea part, being deformed upon by the V-shaped seal ring that pressure medium acts on makes sealing raised and is contacted with valve seat.Valve of the present invention solves the problems, such as that the fashionable valve tightness of traditional valve medium reverse flow is bad.

Description

A kind of valve of tilting v-seal structure bidirectional bearing
Technical field
The invention belongs to valve technology field, more particularly, to a kind of valve of tilting v-seal structure bidirectional bearing.
Background technology
The equipment that valve is industrially used for the fluid media (medium) blocked in pipeline, in order to ensure that the valve element of valve and valve body connect The sealing of opening position is touched, it is necessary to set seal at contact position.
Existing valve, when medium flows into from water inlet, water inlet pressure is situated between higher than the pressure of the delivery port after valve element Thrust caused by confrontation valve element, valve shaft is loaded on valve element, is made valve element mobile to media flow direction with valve shaft and is connect with valve seat Touch, the seal that thrust extruding is fixed on valve element simultaneously forms sealing, and this seal form is also referred to as positive sealing.
In the prior art, the valve of said structure pressurizes from water inlet can be achieved valve closing, still, be pressurizeed from delivery port Leakage just occurs, i.e., can not realize the function of two way seal.
The content of the invention
In view of this, the present invention is directed to propose a kind of valve of tilting v-seal structure bidirectional bearing, to solve existing valve Door can not bidirectional bearing the problem of.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of valve of tilting v-seal structure bidirectional bearing, including valve body, valve seat, valve element and valve shaft；
Valve element is arranged in valve body by valve shaft, and valve element can rotate to side under the control of valve shaft from flow of media direction Side；
Valve seat is limited in valve body by stop screw；
Spool end is equipped with V-shaped seal ring by pressure ring and adjusting screw, and V-shaped seal ring includes sealing, clamping part And inner fovea part, the clamping part both sides of V-shaped seal ring are close to pressure ring and valve element respectively, sealing contacts with valve seat；
In sealed states, there is first residue space between pressure ring and valve element, left between valve seat and valve body to water inlet Second overdose space of the micro movement in direction, pressure ring are provided with aperture, the inner fovea part of V-shaped seal ring by first residue space, Aperture turns on delivery port；
During valve medium back flow, medium from aperture flow into first residue space and enter V-shaped seal ring to inner fovea part, by The V-shaped seal ring acted on to pressure medium, which deforms upon, to be made sealing raised and is contacted with valve seat.
Further, the rotation of the adjusting screw can adjust the size in the first residue space.
Further, the valve shaft is provided with the flat key coordinated with valve element, and valve element is provided with the mounting groove coordinated with flat key.
Further, the spool end is provided with the mounting groove of accommodating V-shaped seal ring, and pressure ring includes bare terminal end, bare terminal end V-shaped seal ring is matched for clamping tightly with mounting groove.
Further, the V-shaped seal ring is elastic rubber or elastic resin part.
Relative to prior art, the valve of tilting v-seal structure bidirectional bearing of the present invention has the advantage that： Solve the problems, such as that the fashionable valve tightness of traditional valve medium reverse flow is bad, i.e., traditional valve can not realize bidirectional bearing Problem.
Brief description of the drawings
The accompanying drawing for forming the part of the invention is used for providing further understanding the invention, present invention wound The schematic description and description made is used to explain the invention, does not form the improper restriction to the invention. In accompanying drawing：
Fig. 1 is the structural representation of the valve described in the embodiment of the present invention；
Fig. 2 is the partial schematic diagram of the valve described in the embodiment of the present invention；
Fig. 3 is the close-up schematic view of the valve described in the embodiment of the present invention；
Fig. 4 is the schematic diagram of the V-shaped seal ring described in the embodiment of the present invention.
Description of reference numerals：
Covered on 1-；2- valve bodies；3- stop screws；4- valve seats；The overdose spaces of 41- second；5-V type sealing rings；51- is sealed Portion；52- clamping parts；53- inner fovea parts；6- pressure rings；7- adjusting screws；71- first residues space；72- apertures；8- valve elements；9- valves Axle；10- delivery ports；11- flat keys；12- water inlets.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the invention can To be mutually combined.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ", The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are Based on orientation shown in the drawings or position relationship, it is for only for ease of description the invention and simplifies description, rather than instruction Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that For the limitation to the invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction Or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined Feature can express or implicitly include one or more this feature.In the description of the invention, unless separately It is described, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the invention Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition State concrete meaning of the term in the invention.
Describe the invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The technical program technical problem to be solved is：Existing valve, when medium flows into from water inlet 12, water inlet Mouthful 12 pressure are higher than the pressure of the delivery port 10 after valve element 8, and medium is loaded on valve element 8 to thrust caused by valve element 8, valve shaft 9, Make valve element 8 mobile to media flow direction with valve shaft 9 and contacted with valve seat 4, thrust extrudes the seal being fixed on valve element 8 simultaneously Sealing is formed, the also referred to as positive sealing of this seal form, the valve of said structure pressurizes from water inlet 12 can be achieved valve pass Close, still, pressurizeed from delivery port 10 and leakage just occurs, i.e., can not realize the function of two way seal.
In order to solve the above-mentioned technical problem, as shown in Figure 1, 2, 3, a kind of tilting v-seal structure is present embodiments provided The valve of bidirectional bearing, including valve body 2, valve seat 4, valve element 8 and valve shaft 9；Valve element 8 is arranged in valve body 2 by valve shaft 9, valve element 8 It can be rotated under the control of valve shaft 9 from flow of media direction to side；Valve seat 4 is limited in valve body 2 by stop screw 3；Valve The end of core 8 is equipped with V-shaped seal ring 5 by pressure ring 6 and adjusting screw 7, as shown in figure 4, V-shaped seal ring 5 include sealing 51, Clamping part 52 and inner fovea part 53, the both sides of clamping part 52 of V-shaped seal ring 5 are close to pressure ring 6 and valve element 8 respectively, sealing 51 with Valve seat 4 contacts；In sealed states, there is first residue space 71 between pressure ring 6 and valve element 8, left between valve seat 4 and valve body 2 To the second overdose space 41 of the micro movement in the direction of water inlet 12, pressure ring 6 is provided with aperture 72, the inner fovea part 53 of V-shaped seal ring 5 Turned on by first residue space 71, aperture 72 and delivery port 10.
The course of work：Valve includes valve body 2, valve seat 4, valve element 8 and valve shaft 9, and valve element 8 is arranged on valve body 2 by valve shaft 9 Interior, valve element 8 can rotate under the control of valve shaft 9 from flow of media direction to side, and valve element 8 is towards flow of media direction side When, lid 1 in the face of valve element 8, lid 1 can adjust processing to valve element 8 and attached parts in opening, and valve body 2 includes water inlet 12 and delivery port 10.
In normal work process, medium is flowed into from water inlet 12, flowed out from delivery port 10, when valve is opened, valve Core 8 is in the side opening position in flow of media direction under the control of valve shaft 9, and valve element 8 is towards flow of media direction, in shutoff valve Men Shi, valve element 8 are in flow of media direction under the control of valve shaft 9, and valve element 8 under the pressure of media flow by occurring slight shape Become, make the seal of valve element 8, V-shaped seal ring 5 contacts with valve seat 4, and V-shaped seal ring 5 occurs under the extruding of valve element 8 and valve seat 4 Deformation is so as to producing sealing function；
Under special working condition, medium reversely flows into from delivery port 10, and valve element 8 is under the control of valve shaft 9 in Jie Matter circulating direction, V-shaped seal ring 5 include sealing 51, clamping part 52 and inner fovea part 53, the both sides of clamping part 52 of V-shaped seal ring 5 It to be close to respectively with pressure ring 6 and valve element 8, sealing 51 contacts with valve seat 4, there is first residue space 71 between pressure ring 6 and valve element 8, The second overdose space 41 to the micro movement in the direction of water inlet 12 is left between valve seat 4 and valve body 2, pressure ring 6 is provided with aperture 72, The inner fovea part 53 of V-shaped seal ring 5 is turned on by first residue space 71, aperture 72 and delivery port 10, and medium is anti-from delivery port 10 To when flowing into, valve element 8 and valve seat 4 pressure medium in sealing contact is disappeared, generate on the contrary reverse pressure cause valve element 8 with Valve seat 4 directly has gap, and medium can reversely flow into valve body 2 from the gap, and this is that common valve can not realize the work reversely sealed Make process, the passage of media flow is available in this valve two, when above-mentioned valve element 8 and 4 direct gap of valve seat, second, pressure The closed channel that the inner fovea part 53 of aperture 72, first residue space 71 and V-shaped seal ring 5 on ring 6 is formed, medium flow into the envelope Pressure medium can pass to the inner fovea part 53 of V-shaped seal ring 5 after closed walk, V-shaped seal ring 5 by can make after the pressure it is overall to Miniature deformation, which occurs, for the direction of sealing 51 makes sealing 51 raise up, i.e., is occurred by the V-shaped seal ring 5 that pressure medium acts on Deformation makes sealing 51 raised and the gap for having laid equal stress on newly closed for medium reverse flow is contacted with valve seat 4.
Due to leaving the second overdose space 41 to the micro movement in the direction of water inlet 12 between valve seat 4 and valve body 2, it is situated between When matter buffer brake acts on, valve seat 4 is with respect to valve body 2 to the direction displacement of water inlet 12, i.e. valve seat 4 is to the direction displacement of valve element 8, equally Can close the gap for medium reverse flow.
The closed channel that aperture 72, first residue space 71, the inner fovea part 53 of V-shaped seal ring 5 are formed, valve seat 4 and valve body 2 it Between leave the second overdose space 41 to the micro movement in the direction of water inlet 12, it is good that the two collective effect can have this valve The effect of reverse pressure-bearing sealing.
The technical scheme that the embodiment is provided has the technical effect that：Solves the fashionable valve of traditional valve medium reverse flow The problem of poor sealing, i.e. traditional valve, can not realize the problem of bidirectional bearing.
The rotation of the adjusting screw 7 can adjust the size in the first residue space 71.Under valve normal operating conditions, I.e. medium flows into from water inlet 12, and during valve forward direction pressure-bearing, the effect in first residue space 71 is to adjust pressure ring 6 close to V-type The extruding force size of seal 5, under the minimum state of first residue space 71, pressure ring 6 and clamping journey of the valve element 8 to V-shaped seal ring 5 Spend highest, under the maximum rating of first residue space 71, pressure ring 6 with it is minimum to the clamping degree of V-shaped seal ring 5 with valve element 8.
The valve shaft 9 is provided with the flat key 11 coordinated with valve element 8, and valve element 8 is provided with the mounting groove coordinated with flat key 11.
The end of valve element 8 is provided with the mounting groove of accommodating V-shaped seal ring 5, and pressure ring 6 includes bare terminal end, bare terminal end and installation Groove is matched for clamping tightly V-shaped seal ring 5.
The V-shaped seal ring 5 is elastic rubber or elastic resin part.
In an advantageous embodiment, V-shaped seal ring 5 can deform upon under the clamping of pressure ring 6 and valve element 8 and make sealing The outwardly convex of portion 51, i.e., the overall deformation in advance of V-shaped seal ring 5 is made by the clamping action of pressure ring 6 and valve element 8, it is caused in advance The advantages of overall deformation, is that the projection amount of sealing surface is adjustable, i.e., when sealing surface is worn in, is sealed by adjusting The projection amount in face makes up wear extent, even if so that seal, which is worn, still can continue normal use.
In an advantageous embodiment, valve shaft 9 uses eccentric setting, and the end of valve element 8 is welded with along the side heap of V-shaped seal ring 5 The B metallic packing rings of wear resistant alloy material, the end of pressure ring 6 are welded with the A metals of wear resistant alloy material along the side heap of V-shaped seal ring 5 Sealing ring；Valve element 8 rotates clockwise valve shaft 9 when closing, and valve shaft 9 rotates with movable valve plug 8, and A metallic packing rings and valve seat 4 are gradual Scraping is extruded, the dirt of the sealing surface of valve seat 4 is removed and forms first of sealing, sealing ring contacts simultaneously with the gradual extruding of valve seat 4 Second sealing is formed, B metallic packing rings contact with the gradual extruding of valve seat 4 and form three seals ring.
When valve element 8 is closed, A metallic packing rings and the gradual extruding scraping of valve seat 4, the dirt of the sealing surface of valve seat 4 is removed simultaneously Form first of sealing, the gradual extruding of V-shaped seal ring 5 and valve seat 44 contact and forms second and seals, B metallic packing rings and The gradual extruding of valve seat 4 contacts and forms three seals ring, and twice metallic packing ring can effectively remove the dirt of the sealing surface of valve seat 4 Dirt, the various pipes serious especially suitable for northern area scale formation, the sealing property of valve is kept, extends valve sealing element Service life；In addition, when valve will close, velocity of medium accelerates that V-shaped seal ring 5 can be caused medium erosion failure, two Road metallic packing ring can be formed to V-shaped seal ring 5 and protected, and further extend the service life of sealing ring.
The preferred embodiment of the invention is the foregoing is only, is not intended to limit the invention creation, it is all at this Within the spirit and principle of innovation and creation, any modification, equivalent substitution and improvements made etc., the invention should be included in Protection domain within.

Claims (5)

  1. A kind of 1. valve of tilting v-seal structure bidirectional bearing, it is characterised in that：Including valve body, valve seat, valve element and valve shaft；
    Valve element is arranged in valve body by valve shaft, and valve element can rotate to side under the control of valve shaft from flow of media direction；
    Valve seat is limited in valve body by stop screw；
    Spool end is equipped with V-shaped seal ring by pressure ring and adjusting screw, and V-shaped seal ring includes sealing, clamping part and interior Recess, the clamping part both sides of V-shaped seal ring are close to pressure ring and valve element respectively, and sealing contacts with valve seat；
    In sealed states, there is first residue space between pressure ring and valve element, left between valve seat and valve body to water inlet direction Second overdose space of micro movement, pressure ring are provided with aperture, and the inner fovea part of V-shaped seal ring passes through first residue space, aperture Turned on delivery port；
    During valve medium back flow, medium from aperture flow into first residue space and enter V-shaped seal ring to inner fovea part, be situated between The V-shaped seal ring of matter pressure effect, which deforms upon, to be made sealing raised and is contacted with valve seat.
  2. A kind of 2. valve of tilting v-seal structure bidirectional bearing according to claim 1, it is characterised in that：Adjust spiral shell The rotation of nail can adjust the size in the first residue space.
  3. A kind of 3. valve of tilting v-seal structure bidirectional bearing according to claim 1, it is characterised in that：On valve shaft Provided with the flat key coordinated with valve element, valve element is provided with the mounting groove coordinated with flat key.
  4. A kind of 4. valve of tilting v-seal structure bidirectional bearing according to claim 1, it is characterised in that：Spool end Portion is provided with the mounting groove of accommodating V-shaped seal ring, and pressure ring includes bare terminal end, and bare terminal end is matched for clamping tightly V-shaped seal ring with mounting groove.
  5. A kind of 5. valve of tilting v-seal structure bidirectional bearing according to claim 1, it is characterised in that：V-seal Enclose as elastic rubber or elastic resin part.
CN201711038742.3A 2017-10-30 2017-10-30 A kind of valve of tilting v-seal structure bidirectional bearing Pending CN107701733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711038742.3A CN107701733A (en) 2017-10-30 2017-10-30 A kind of valve of tilting v-seal structure bidirectional bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711038742.3A CN107701733A (en) 2017-10-30 2017-10-30 A kind of valve of tilting v-seal structure bidirectional bearing

Publications (1)

Publication Number Publication Date
CN107701733A true CN107701733A (en) 2018-02-16

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ID=61177057

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711038742.3A Pending CN107701733A (en) 2017-10-30 2017-10-30 A kind of valve of tilting v-seal structure bidirectional bearing

Country Status (1)

Country Link
CN (1) CN107701733A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115013546A (en) * 2022-07-14 2022-09-06 良工阀门集团有限公司 Two-way seal structure and butterfly valve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1354709A (en) * 1970-07-28 1974-06-05 Mannvillier P T Butterfly valve and sealing ring therefor
US6805332B2 (en) * 2002-03-29 2004-10-19 Michael F. Crawley Inflatable seat valve
CN2688995Y (en) * 2004-04-22 2005-03-30 杨清强 Two-way non-loss butterfly valves
CN2849354Y (en) * 2005-11-08 2006-12-20 金志渊 Float adjustable bidirectional metal hard sealed butterfly valve
CN102109042A (en) * 2011-03-18 2011-06-29 赵雷 Two-way pressure-bearing fluororubber fireproof butterfly valve
CN207349451U (en) * 2017-10-30 2018-05-11 博纳斯威阀门股份有限公司 A kind of valve of tilting v-seal structure bidirectional bearing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1354709A (en) * 1970-07-28 1974-06-05 Mannvillier P T Butterfly valve and sealing ring therefor
US6805332B2 (en) * 2002-03-29 2004-10-19 Michael F. Crawley Inflatable seat valve
CN2688995Y (en) * 2004-04-22 2005-03-30 杨清强 Two-way non-loss butterfly valves
CN2849354Y (en) * 2005-11-08 2006-12-20 金志渊 Float adjustable bidirectional metal hard sealed butterfly valve
CN102109042A (en) * 2011-03-18 2011-06-29 赵雷 Two-way pressure-bearing fluororubber fireproof butterfly valve
CN207349451U (en) * 2017-10-30 2018-05-11 博纳斯威阀门股份有限公司 A kind of valve of tilting v-seal structure bidirectional bearing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115013546A (en) * 2022-07-14 2022-09-06 良工阀门集团有限公司 Two-way seal structure and butterfly valve
CN115013546B (en) * 2022-07-14 2023-03-14 良工阀门集团有限公司 Two-way seal structure and butterfly valve

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Application publication date: 20180216