CN110486485A - A kind of centre-pivoted butterfly valve valve board assembly and centre-pivoted butterfly valve - Google Patents
A kind of centre-pivoted butterfly valve valve board assembly and centre-pivoted butterfly valve Download PDFInfo
- Publication number
- CN110486485A CN110486485A CN201910890792.7A CN201910890792A CN110486485A CN 110486485 A CN110486485 A CN 110486485A CN 201910890792 A CN201910890792 A CN 201910890792A CN 110486485 A CN110486485 A CN 110486485A
- Authority
- CN
- China
- Prior art keywords
- valve
- containment member
- centre
- seal
- ring
- 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
Links
- 238000007789 sealing Methods 0.000 claims abstract description 80
- 238000009434 installation Methods 0.000 claims abstract description 21
- 210000004907 gland Anatomy 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F16K1/22—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 crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2261—Shaping 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
- 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
- F16K1/22—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 crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2268—Sealing means for the axis of rotation
-
- 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
- F16K1/36—Valve members
-
- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/023—Spindle sealings with stuffing-box ; Sealing rings for spindles which only rotate, i.e. non-rising spindles
- F16K41/026—Spindle sealings with stuffing-box ; Sealing rings for spindles which only rotate, i.e. non-rising spindles for rotating valves
Abstract
The invention discloses a kind of centre-pivoted butterfly valve valve board assemblies, belong to valve technology field, including valve plate and containment member, positioned at the containment member mounting base of valve plate main body excircle；The upper surface and lower end surface of valve shaft installation set are equipped with and annular seal groove；The outer circumference surface center of section cascaded containment member mounting base is equipped with the primary seal slot being connected to above-mentioned annular seal groove；Containment member is set in annular seal groove and primary seal slot；Containment member includes the upper end axis hole sealing ring of integral structure and the arc primary seal item that lower end gland seal ring and connection upper end axis hole sealing ring and lower end gland seal ring are arranged symmetrically, and the present invention relates to a kind of centre-pivoted butterfly valves with above-mentioned valve board assembly.The present invention improves the sealing structure of middle line class valve, is packed into the valve plate of with groove by section cascaded containment member, quick for installation, it is conveniently replaceable and repairs, while reducing valve plate and valve seal gap, improve valve seal performance, valve torque is reduced, the service life of butterfly valve is extended.
Description
Technical field
The invention belongs to valve technology field more particularly to a kind of centre-pivoted butterfly valve valve board assemblies and centre-pivoted butterfly valve.
Background technique
It is well known that centre-pivoted butterfly valve is a kind of component for realizing pipe-line system on-off and flow control, petroleum,
It obtains applying extremely widely in many fields such as chemical industry, metallurgy, water power.Line with rubber formula is mostly used in the seal form of centre-pivoted butterfly valve
Sealing structure, sealing material are rubber, polytetrafluoroethylene (PTFE) etc..Existing centre-pivoted butterfly valve is generally divided into two according to the position of sealing material
Class, one kind are valve inner line with rubber to realize sealing, and two classes are that elastic sealing layer is coated on valve plate to realize sealing；
Wherein first kind valve inner line with rubber, which has, is divided into two kinds, and 1, be mounted in valve body using the molding gum cover of Mold Making
Portion, commonly referred to as soft backrest structure；The rubber lining of this valve can be replaced if any damage；It 2, is that rubber is direct
It is pasted onto metal valve body and vulcanizes, the rubber lining of commonly referred to as hard backrest structure, this valve can not be replaced if any damage
Lining can only replace whole deck valve door.It is existing to have a soft backrest and two kinds of hard backrest structure to folder linking centre-pivoted butterfly valve, and flange
Linking centre-pivoted butterfly valve usually all uses hard backrest structure.Since flange join type valve weight is big, passed through when carrying after curing
Often result in the damage of line with rubber layer.
Two classes are that elastic sealing layer is coated on valve plate body to realize sealing；Shape is distinguished in valve plate body both ends of the surface
At gland seal ring lip；The valve plate of above structure, in opening and closing, elastic sealing layer corresponding with seal ring face can be sent out with valve channel
Raw to squeeze, elastic sealing layer generates moderate finite deformation without Free up Memory, to increase elastic sealing layer meeting and valve channel
Between friction, not only open and close torque is big, but also shortens the service life of butterfly valve.
Therefore, it is necessary to develop the middle line that a kind of open and close torque is small, sealing effect is good, replacement is convenient, reduces use cost
Butterfly valve plate component and centre-pivoted butterfly valve.
Summary of the invention
In view of the problems of the existing technology, that the present invention provides a kind of open and close torques is small, sealing effect is good, replacement side
Just, the centre-pivoted butterfly valve valve board assembly and centre-pivoted butterfly valve of use cost are reduced.
The invention is realized in this way a kind of centre-pivoted butterfly valve valve board assembly, including valve plate and containment member, the center of valve plate
It is provided with the valve shaft installation set of perforation, the wafer type valve plate main body centered on valve shaft installation set, the thickness of valve plate main body is by valve
The excircle of axis installation set is gradually reduced outward, which is characterized in that further includes the containment member peace positioned at valve plate main body excircle
Fill seat；The thickness of the containment member mounting base is greater than the outer peripheral thickness of valve plate main body；The upper end string of the valve shaft installation set
Face and lower end chord plane are equipped with annular seal groove；The outer circumference surface center of the containment member mounting base is equipped with and above-mentioned ring
The primary seal slot of shape seal groove connection；Containment member is set in above-mentioned annular seal groove and primary seal slot；The sealing structure
Part uses section cascaded structure, upper end axis hole sealing ring and lower end gland seal ring and connection upper end axis hole including integral structure
The arc primary seal item that sealing ring and lower end gland seal ring are arranged symmetrically, above-mentioned upper end axis hole sealing ring and lower end axis hole
Sealing ring and monosymmetric arc primary seal bar shaped are at section cascaded structure；Above-mentioned upper end axis hole sealing ring and lower end axis hole
Sealing ring is set in the upper surface of valve shaft installation set and the annular seal groove of lower end surface；Two arc primary seal item suits
In the primary seal slot of the outer circumference surface of containment member mounting base.
In the above-mentioned technical solutions, the T-shaped structure in section of the preferred primary seal slot；With the arc of primary seal slot cooperation
The shape of shape primary seal item and the shape of seal groove are coincide；The arc primary seal item includes mounting portion and sealing, described close
Envelope portion is arc-shaped structure.
In the above-mentioned technical solutions, under the upper end and lower end gland seal ring of the preferred upper end axis hole sealing ring
End, which is equipped with, cooperates conical seal (contact) face with the valve shaft mounting hole on the valve seat of centre-pivoted butterfly valve.
Invention additionally discloses a kind of centre-pivoted butterfly valve, including valve body is related to, the upper axle bed of top in the middle part of valve body, setting are set
The lower axle bed of lower section in the middle part of valve body；The intracorporal valve plate of valve is set, and the valve plate installs the lower end installation lower valve of valve shaft, valve plate
Axis, the upper valve shaft are mounted on upper axle bed by support sleeve, and the lower valve shaft is mounted in lower axle bed by support sleeve；Its
It is characterized in that, the inner wall middle position of the valve body is equipped with ring sealing base, and the two sides of the ring sealing base are equipped with sealing
Intermediate incline；The valve plate uses above-mentioned valve board assembly.
The present invention has the advantage that and technical effect: by adopting the above technical scheme due to the present invention, i.e., in the outer circle of valve plate
Circumferential surface adds containment member mounting base, and containment member is set in containment member mounting base has good anti-dropout characteristic, when
When valve plate rotationally disengages valve body, containment member be will not fall off.When valve plate is closed, primary seal item and valve inner middle position
Annular sealing strip, which is fitted close, realizes sealing, when being sealed in loine pressure raising of the primary seal item in seal process on valve plate
Deformation, squeezes with the annular sealing strip of valve body, realizes self-sealing effect, to rub, reduces open and close torque, while both ends
Sealing ring be squeezed and deformed towards the direction of valve shaft mounting hole, and then realize the sealing at valve shaft, the present invention will close valve
When the resistance of stress deformation that generates be converted to the power of valve shaft sealing, greatly reduce open and close torque, while also improving valve
The sealing effect of axis extends the service life of butterfly valve.In addition, compared to the prior art repair it is more convenient, only need to dismantle valve plate after
Replacement novel sealing component can reach initial sealing effect, greatly reduce maintenance cost.
Detailed description of the invention
Fig. 1 is centre-pivoted butterfly valve valve board assembly structural schematic diagram of the present invention；
Fig. 2 is A-A cross-sectional view in Fig. 1；
Fig. 3 is centre-pivoted butterfly valve valve board assembly schematic perspective view；
Fig. 4 is valve board structure schematic diagram in the present invention；
Fig. 5 is B-B cross-sectional view in Fig. 4；
Fig. 6 is valve plate schematic perspective view；
Fig. 7 is containment member structural schematic diagram；
Fig. 8 is C-C cross-sectional view in figure；
Fig. 9 is containment member schematic perspective view；
Figure 10 is centre-pivoted butterfly valve structural schematic diagram；
Figure 11 is centre-pivoted butterfly valve schematic perspective view；
Figure 12 is valve body structure schematic diagram.
In figure, 1, valve shaft installation set；2, valve plate main body；3, containment member mounting base；3-1, annular seal groove；3-2, master are close
Sealing groove；4, containment member；4-1, upper end axis hole sealing ring；4-2, lower end gland seal ring；4-3, arc primary seal item；4-30,
Mounting portion；4-31, sealing；5, valve body；5-1, upper axle bed；5-2, lower axle bed；5-3, ring sealing base；5-4, sealing transition are oblique
Face；6, upper valve shaft；7, lower valve shaft.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, attached with correlation with reference to embodiments
Figure, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain this hair
It is bright, it is not intended to limit the present invention.
Please refer to Fig. 1 to Fig. 9, a kind of centre-pivoted butterfly valve valve board assembly, including valve plate and containment member, the center of the valve plate
Valve shaft installation set 1 equipped with perforation, the wafer type valve plate main body 2 centered on valve shaft installation set, the thickness of valve plate main body is by valve shaft
The excircle of installation set is gradually reduced outward, further includes the containment member mounting base 3 positioned at valve plate main body excircle；The sealing
The thickness of component mounting base is greater than the outer peripheral thickness of valve plate main body；The upper end chord plane and lower end chord plane of the valve shaft installation set are equal
Equipped with annular seal groove 3-1；The outer circumference surface center of the containment member mounting base is equipped with and above-mentioned annular seal groove
The primary seal slot 3-2 of connection；Containment member 4 is set in above-mentioned annular seal groove and primary seal slot；The containment member is adopted
With section cascaded structure, the containment member include the upper end axis hole sealing ring 4-1 and lower end gland seal ring 4-2 of integral structure with
And the arc primary seal 4-3 that connection upper end axis hole sealing ring and lower end gland seal ring are arranged symmetrically, above-mentioned upper shaft
Hole sealing ring and lower end gland seal ring and monosymmetric arc primary seal bar shaped are at section cascaded structure；Above-mentioned upper end axis hole
Sealing ring and lower end gland seal ring set are in the upper surface of valve shaft installation set and the annular seal groove 3-1 of lower end surface；Two
Arc primary seal item is mounted in the primary seal slot 3-2 of the outer circumference surface of containment member mounting base, and above-mentioned sleeve structure has
Good anti-dropout characteristic, when valve plate rotationally disengages valve body, containment member be will not fall off.
In the above-mentioned technical solutions, the T-shaped structure in section of the preferred primary seal slot；With the arc of primary seal slot cooperation
The shape of shape primary seal item and the shape of seal groove are coincide；The arc primary seal 4-3 includes mounting portion 4-30 and sealing
4-31, the sealing are arc-shaped structure, and wherein mounting portion is sleeved on the bottom of T-slot, and the sealing is exposed, with valve body
After assembly, it is bonded in sealing state with the inner tight of valve body and realizes self-sealing.
In the above-mentioned technical solutions, under the upper end and lower end gland seal ring of the preferred upper end axis hole sealing ring
End, which is equipped with, cooperates conical seal (contact) face with the valve shaft mounting hole on the valve seat of centre-pivoted butterfly valve, after compressing sealing, improves valve shaft position
Sealing effect.
Invention additionally discloses a kind of centre-pivoted butterfly valve is related to, Fig. 1 to Figure 12, including valve body 5 are please referred to, is arranged in the middle part of valve body
The lower axle bed 5-2 of lower section in the middle part of valve body is arranged in the upper axle bed 5-1 of top；The intracorporal valve plate of valve is set, and the valve plate is installed
Lower valve shaft 7 is installed in the lower end of valve shaft 6, valve plate, and the upper valve shaft is mounted on upper axle bed by support sleeve, and the lower valve shaft passes through
Support sleeve is mounted in lower axle bed；The inner wall middle position of the valve body is equipped with ring sealing base 5-3, the ring sealing base
Two sides be equipped with sealing intermediate incline 5-4；The valve plate uses above-mentioned valve board assembly.
Working principle of the present invention: it in actual use, drives upper valve shaft rotation to realize by driving device and opens or closes.
When closed, sealing is realized in symmetrical arc primary seal item and the cooperation of the ring sealing base in valve inner middle position, sealing
In the process the sealing of the arc primary seal item of the containment member on valve plate by primary seal item and valve inner middle position ring
Shape band, which is fitted close, realizes sealing, and the loine pressure that is sealed in of the primary seal item in seal process on valve plate increases time-varying
Shape is squeezed with the annular sealing strip of valve body, realizes self-sealing effect, thus rub, reduction open and close torque, while both ends
Sealing ring is squeezed and deformed towards the direction of valve shaft mounting hole, and then realizes the sealing at valve shaft.
The resistance of the stress deformation generated when closing valve is converted to the power of valve shaft sealing by the present invention, is greatly reduced
Open and close torque, while the sealing effect of valve shaft is also improved, extend the service life of butterfly valve.In addition, compared to the prior art tieing up
Repair more convenient, need to only dismantle replacement novel sealing component after valve plate can reach initial sealing effect, greatly reduce maintenance cost.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc. within mind and principle, such as the material of containment member, the section of primary seal slot
Shape etc., should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of centre-pivoted butterfly valve valve board assembly, including valve plate and containment member, the valve shaft installation for being provided centrally with perforation of valve plate
Set, the thickness of the wafer type valve plate main body centered on valve shaft installation set, valve plate main body are outside by the excircle of valve shaft installation set
It is gradually reduced, which is characterized in that further include the containment member mounting base positioned at valve plate main body excircle；The containment member installation
The thickness of seat is greater than the outer peripheral thickness of valve plate main body；The upper end chord plane and lower end chord plane of the valve shaft installation set are equipped with annular
Seal groove；The outer circumference surface center of the containment member mounting base is equipped with the primary seal being connected to above-mentioned annular seal groove
Slot；Containment member is set in above-mentioned annular seal groove and primary seal slot；The containment member uses section cascaded structure, including
The upper end axis hole sealing ring and lower end gland seal ring and connection upper end axis hole sealing ring and lower end gland seal of integral structure
The arc primary seal item that ring is arranged symmetrically, above-mentioned upper end axis hole sealing ring and lower end gland seal ring and monosymmetric
The bar shaped of arc primary seal is at section cascaded structure；Above-mentioned upper end axis hole sealing ring and lower end gland seal ring is set in valve shaft
In the upper surface of installation set and the annular seal groove of lower end surface；Two arc primary seal items are sleeved on the outer of containment member mounting base
In the primary seal slot of periphery.
2. centre-pivoted butterfly valve valve board assembly according to claim 1, it is characterised in that: the section of the primary seal slot is T-shaped
Structure；It coincide with the shape of the arc primary seal item of primary seal slot cooperation and the shape of seal groove；The arc primary seal item packet
Mounting portion and sealing are included, the sealing is arc-shaped structure.
3. centre-pivoted butterfly valve valve board assembly according to claim 1, it is characterised in that: the upper end of the upper end axis hole sealing ring
Portion and the lower end of lower end gland seal ring, which are equipped with, cooperates conical seal (contact) face with the valve shaft mounting hole on the valve seat of centre-pivoted butterfly valve.
4. the upper axle bed of top in the middle part of valve body is arranged in a kind of centre-pivoted butterfly valve, including valve body, it is arranged in the middle part of valve body under lower section
Axle bed；The intracorporal valve plate of valve is set, and the valve plate installs the lower end installation lower valve shaft of valve shaft, valve plate, and the upper valve shaft passes through
Support sleeve is mounted on axle bed, and the lower valve shaft is mounted in lower axle bed by support sleeve；It is characterized in that, the valve body
Inner wall middle position be equipped with ring sealing base, the two sides of the ring sealing base are equipped with sealing intermediate incline；The valve plate
Using any valve board assembly of the claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890792.7A CN110486485A (en) | 2019-09-20 | 2019-09-20 | A kind of centre-pivoted butterfly valve valve board assembly and centre-pivoted butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890792.7A CN110486485A (en) | 2019-09-20 | 2019-09-20 | A kind of centre-pivoted butterfly valve valve board assembly and centre-pivoted butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110486485A true CN110486485A (en) | 2019-11-22 |
Family
ID=68558897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910890792.7A Pending CN110486485A (en) | 2019-09-20 | 2019-09-20 | A kind of centre-pivoted butterfly valve valve board assembly and centre-pivoted butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110486485A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3526385A (en) * | 1968-02-19 | 1970-09-01 | Varian Associates | O-ring with integral stem sealing means and butterfly valve using same |
| US4358086A (en) * | 1979-10-09 | 1982-11-09 | George Fischer Ltd. | Butterfly valve |
| CN2581769Y (en) * | 2002-11-07 | 2003-10-22 | 鞍山热能研究院 | Four-way reversing valve |
| CN101858441A (en) * | 2010-06-07 | 2010-10-13 | 山东鲁临阀门有限公司 | Full lining bidirectional composite soft sealing butterfly valve |
| CN201627940U (en) * | 2009-11-09 | 2010-11-10 | 江苏神通阀门股份有限公司 | Center line butterfly valve |
| CN102052483A (en) * | 2011-01-14 | 2011-05-11 | 铁岭泰科阀门有限公司 | Four-way butterfly valve |
| CN201884681U (en) * | 2010-06-07 | 2011-06-29 | 山东鲁临阀门有限公司 | Fully-lined two-way compound soft seal butterfly valve |
| CN103438228A (en) * | 2013-08-20 | 2013-12-11 | 山东莱德机械有限公司 | Self-sealing center line-type butterfly valve |
| CN204704399U (en) * | 2015-06-01 | 2015-10-14 | 天津科瑞德自控阀门有限公司 | A kind of multi-sealed Butterfly valve with liner |
| CN210461726U (en) * | 2019-09-20 | 2020-05-05 | 天津银河阀门有限公司 | Center line butterfly valve plate assembly and center line butterfly valve |
-
2019
- 2019-09-20 CN CN201910890792.7A patent/CN110486485A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3526385A (en) * | 1968-02-19 | 1970-09-01 | Varian Associates | O-ring with integral stem sealing means and butterfly valve using same |
| US4358086A (en) * | 1979-10-09 | 1982-11-09 | George Fischer Ltd. | Butterfly valve |
| CN2581769Y (en) * | 2002-11-07 | 2003-10-22 | 鞍山热能研究院 | Four-way reversing valve |
| CN201627940U (en) * | 2009-11-09 | 2010-11-10 | 江苏神通阀门股份有限公司 | Center line butterfly valve |
| CN101858441A (en) * | 2010-06-07 | 2010-10-13 | 山东鲁临阀门有限公司 | Full lining bidirectional composite soft sealing butterfly valve |
| CN201884681U (en) * | 2010-06-07 | 2011-06-29 | 山东鲁临阀门有限公司 | Fully-lined two-way compound soft seal butterfly valve |
| CN102052483A (en) * | 2011-01-14 | 2011-05-11 | 铁岭泰科阀门有限公司 | Four-way butterfly valve |
| CN103438228A (en) * | 2013-08-20 | 2013-12-11 | 山东莱德机械有限公司 | Self-sealing center line-type butterfly valve |
| CN204704399U (en) * | 2015-06-01 | 2015-10-14 | 天津科瑞德自控阀门有限公司 | A kind of multi-sealed Butterfly valve with liner |
| CN210461726U (en) * | 2019-09-20 | 2020-05-05 | 天津银河阀门有限公司 | Center line butterfly valve plate assembly and center line butterfly valve |
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