CN106286865B - A kind of three rod-type butterfly valves - Google Patents
A kind of three rod-type butterfly valves Download PDFInfo
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- CN106286865B CN106286865B CN201610969642.1A CN201610969642A CN106286865B CN 106286865 B CN106286865 B CN 106286865B CN 201610969642 A CN201610969642 A CN 201610969642A CN 106286865 B CN106286865 B CN 106286865B
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- Prior art keywords
- valve
- connecting rod
- butterfly
- plate
- valve body
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Classifications
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- 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
- F16K1/221—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 specially adapted operating means therefor
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- 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
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- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a kind of three rod-type butterfly valves, including valve seat, valve deck, cylinder, axis pin fastener, valve body, butterfly plate, sealing element, sealing element pressing plate, driving device, valve shaft, Packing seat, stuffing-box, gland, first connecting rod, second connecting rod, limiting plate, valve body guide rail, supporting rack, third connecting rod, link, the second positioning supporting frame, the first positioning supporting frame, slip coupling, axle sleeve and butterfly plate shaft；Three linkages are made of indexing mechanism and slider-crank mechanism, and the effect of slider-crank mechanism is that a distance is first translated when butterfly plate switchs and then is being rotated；The effect of indexing mechanism is exactly when butterfly plate is switched and translated, it is controlled not rotate, after butterfly plate lifts off a seat a distance, butterfly plate just starts rotary work.The conversion of motion that rotates in a circumferential direction is the translation and rotary motion along axis, avoids friction of the butterfly plate when rotating between sealing pair by the butterfly valve by the ingenious cooperation of indexing mechanism and slider-crank mechanism.
Description
Technical field
The present invention relates to mechanical devices, are specifically a kind of three rod-type butterfly valves.
Background technology
Three bar butterfly valves have generally included valve body, valve seat, valve rod and butterfly plate；Valve seat is fixed in the body cavity, butterfly plate position
In the inner cavity of valve seat.The operation principle of three bar butterfly valves is by driving mechanism driving transmission shaft rotation, and transmission shaft drives transmission to connect
Bar, kinematic link band ovable valve stem, valve rod drive butterfly plate to be rotated, its edge and valve base sealing or opening after butterfly plate rotation.Cause
This, the keying of valve is realized by linkage.However, the butterfly plate switching moments during keying, the movement of butterfly plate is one
The smaller circular arc of section, can interfere with valve seat, while to endeavour square there are impact resistance between sealing pair and increase.Therefore, frequency
Numerous keying be easy to cause sealing surface wear acceleration, and sealing performance declines, and ultimately results in valve leak.Application number 03279456.8
A kind of three rod-type butterfly valves are disclosed, which preferably solves the problems, such as this：Joined between its valve body and driving device by stent
Knot, valve shaft are mounted in valve body, and valve shaft one end is stretched into driving device, and the two passes through key connection.Valve shaft passes through filler with valve body
It is sealed with gland, valve shaft makees axial limiting in valve body by split annulus, and connecting rod and connecting plate, connection are housed on valve shaft
Bar is fixedly connected with valve shaft by key, and with valve shaft to be flexibly connected, valve shaft can rotate connecting plate in connecting plate.Fixed plate is welded
It is connected in valve body, connecting plate is fixedly connected with fixed plate by screw bolt and nut.Idler wheel is mounted in the slot of connecting plate, can be around
The center of circle rotates, and idler wheel is connected with butterfly plate by axis pin, and connecting rod is connected with butterfly plate by shaft.Adjusting pad is mounted in end cap,
End cap is mounted on body base flange, the pile-up welding hard alloy at the sealing surface of butterfly plate and valve seat.During action, driving device band
Dynamic valve shaft, valve shaft are rotated with connecting rod, and connecting rod drives butterfly plate movement, meanwhile, butterfly plate is rotated by idler wheel around its circle centre position,
Its principle is equivalent to three linkages, and the movement locus of butterfly plate rotates afterwards first to translate.During closing, butterfly plate first rotates, rear flat
It moves, butterfly plate parallel against valve seat.Sealing leak problem is addressed, and extends the service life of three bar butterfly valves.But this butterfly
There are still deficiencies for valve：Very high, the processing difficulties with the relevant structure precision actual requirement of three linkage, frock program are complicated
And it is added significantly to product cost.
The content of the invention
In view of the deficiencies of the prior art, the technical issues of present invention intends to solve is to provide a kind of three rod-type butterfly valves.The butterfly valve
At work by the movement for opening and closing moment translation and then rotating again, complete zero abrasion between butterfly plate and valve seat passes through three rod-types
Mechanism realizes movement needs of the butterfly valve without abrasion plus indexing mechanism；It is simple in structure simultaneously, it is easy to manufacture, it is of low cost, make
Use long lifespan.
The technical solution that the present invention solves the technical problem is to provide a kind of three rod-type butterfly valves, including valve seat, valve deck,
It cylinder, axis pin fastener, valve body, butterfly plate, sealing element, sealing element pressing plate, driving device, valve shaft, Packing seat, stuffing-box and fills out
Expect gland；One end of the valve body is fixedly connected with valve seat, and the other end is fixedly connected with butterfly plate；The top of valve body is fixed with valve deck
Connection；Binding face between the valve body and valve seat is equipped with sealing ring；Binding face between the valve body and valve deck is equipped with
Sealing ring；The sealing element is fastened on by sealing element follower bolt on butterfly plate, sealing element be located at butterfly plate and sealing element pressing plate it
Between；Valve body forms sealing pair with sealing element cooperation；The outside of the valve body is equipped with hollow cylinder；The valve shaft is located at valve
In body and cylinder, valve shaft one end is connected through cylinder with driving device, between valve shaft and cylinder by airtight and watertight padding and
Gland seals；The airtight and watertight padding is stored in stuffing-box；The stuffing-box is sealed by Packing seat；
It is characterized in that the butterfly valve further includes first connecting rod, second connecting rod, limiting plate, valve body guide rail, supporting rack, the 3rd
Connecting rod, link, the second positioning supporting frame, the first positioning supporting frame, slip coupling, axle sleeve and butterfly plate shaft；The valve shaft
The other end be connected with slip coupling；The axle sleeve is installed on outside valve shaft, in cylinder；The first positioning support
Frame and the second positioning supporting frame are fixedly mounted in valve body, vertical with valve shaft perpendicular to horizontal plane, and；The first connecting rod
Lower part on the right side of be connected by the right axis pin of first connecting rod with the first positioning supporting frame and slip coupling, the lower part of a first connecting rod left side
Side is connected by the left axis pin of first connecting rod with the second positioning supporting frame；It is hollow, first connecting rod in the middle part of the first connecting rod
Top be connected by axis pin fastener with second connecting rod one end；The other end of the second connecting rod and one end of limiting plate connect
It connects, the other end of limiting plate is connected with the supporting rack on butterfly plate；One end of the third connecting rod passes through axis pin fastener
It is connected with first connecting rod and second connecting rod；The third connecting rod other end is connected with the link on butterfly plate；The valve
Internal wall is provided with valve body guide rail；Butterfly plate shaft is installed, butterfly plate shaft coordinates with valve body guide rail on the butterfly plate.
Compared with prior art, advantageous effect of the present invention is：
1. efficiency improves.Butterfly valve of the present invention traditional butterfly plate rotary opening and closing mode is designed to the butterfly plate of butterfly valve " translation+
The compound motion track of rotation "：Three linkages are made of indexing mechanism and slider-crank mechanism, and the effect of slider-crank mechanism is
In the case where first connecting rod rotates, butterfly plate can keep horizontal direction displacement, and one can be first translated when butterfly plate switchs
Then segment distance is rotating；The effect of indexing mechanism is exactly when butterfly plate is switched and translated, it is controlled not rotate, works as butterfly
Plate is lifted off a seat after a distance, and butterfly plate just starts rotary work.So as to form the compound motion rail of butterfly plate " translation+rotation "
Mark.The design of this " translation+rotation " avoids butterfly plate and generates frictional force between sealing pair when rotating, and can alleviate or disappear
The impact resistance between sealing pair during except valve switch, and when opening butterfly plate, the pressure medium on butterfly plate both sides has laid down major part,
It is greatly reduced so opening and closing torque, is only 10% or so of general butterfly valve, driving device can be made accordingly to reduce, so as to reduce into
This, has saved the energy, while has improved keying speed.
2. the service life extends.Butterfly valve of the present invention is when opening butterfly plate, since sealing element disengages in advance, the pressure differential on butterfly plate both sides
Reduce, reduce so fluid media (medium) acts on the opening impact of butterfly plate, operation noise also reduces, so the shock resistance fatigue of butterfly valve
Damage capability greatly improves, and the service life of valve can be made to be increased to hundreds of thousands by current thousands of times.Meanwhile pass through three bars
Mechanism is applied a force on butterfly plate so that butterfly plate is translated and overturn to open, closes valve, equally also extends valve
Service life.
3. good airproof performance.Butterfly plate keying moment translation of the present invention and then the movement rotated again effectively prevent traditional butterfly plate and open
The abrasion that moment rotary motion is brought is closed, ensure that good sealing performance.
It is 4. easily fabricated.Butterfly valve structure of the present invention is compact, and the volume and weight of valve are lighter, operates simple light, production
Manufacture is easier.
5. structural behaviour is stablized.By being provided with two positioning supporting frames between valve body and first connecting rod, in butterfly plate and
The link that is set between two connecting rods and adding reinforcing rib makes structure firmer, extends the service life of three bar butterfly valves.
Valve body guide rail coordinates with butterfly plate shaft, ensure that the linear motion of valve opening moment butterfly plate, makes movement more accurate, and control is more
Add conveniently.
6. design concept is novel.Butterfly valve of the present invention is by the ingenious cooperation of indexing mechanism and slider-crank mechanism, by one
The conversion of motion that rotates in a circumferential direction for one along the translation of axis and a rotary motion, it is achieved thereby that butterfly plate be first translatable one section away from
From departing from sealing element and valve seat, then again in friction free Unscrew.It avoids butterfly plate and opens moment sealing element
With the friction of valve seat, ensure that leakproofness is good.First connecting rod structure is hollow rod-like structure, during avoiding link motion
Interference, ensure that the stability of structure.
Description of the drawings
Fig. 1 is a kind of overall structure axonometric schematic diagram of three embodiments of rod-type butterfly valve of the invention；
Fig. 2 is schematic cross-sectional view of the three rod-type butterfly valves of the invention along the A-A directions in Fig. 1；
Fig. 3 is schematic cross-sectional view of the three rod-type butterfly valves of the invention along the B-B directions in Fig. 2；
Fig. 4 is the partial enlargement structural representation at I in three rod-type butterfly valve Fig. 3 of the present invention；
Fig. 5 is a kind of axonometric schematic diagram of the first connecting rod of embodiment of three rod-type butterfly valves of the invention；(in figure：1st, valve seat；2、
Valve deck；3rd, cylinder；4th, first connecting rod；41st, the right axis pin of first connecting rod；42nd, the left axis pin of first connecting rod；5th, axis pin fastener；6、
Second connecting rod；7th, limiting plate；8th, valve body guide rail；9th, valve body；10th, supporting rack；11st, butterfly plate；12nd, third connecting rod；13rd, link；
14th, the second positioning supporting frame；15th, sealing element；16th, sealing element pressing plate；17th, the first positioning supporting frame；18th, slip coupling；19、
Valve shaft；20th, axle sleeve；21st, Packing seat；22nd, stuffing-box；23rd, gland；24th, driving device；25th, butterfly plate shaft；
Specific embodiment
Specific embodiments of the present invention are given below.Specific embodiment is only used for that the present invention is further described, unlimited
The application scope of the claims processed.
The present invention provides a kind of three rod-type butterfly valves (abbreviation butterfly valve, referring to Fig. 1-5), including valve seat 1, valve deck 2, cylinder
3rd, first connecting rod 4, axis pin fastener 5, second connecting rod 6, limiting plate 7, valve body guide rail 8, valve body 9, supporting rack 10, butterfly plate 11,
Three-link 12, link 13, the second positioning supporting frame 14, sealing element 15, sealing element pressing plate 16, the first positioning supporting frame 17, cunning
Dynamic shaft coupling 18, valve shaft 19, axle sleeve 20, Packing seat 21, stuffing-box 22, gland 23, driving device 24 and butterfly plate shaft 25；
The circular in cross-section of the valve body 9；One end of the valve body 9 is fixedly connected by bolt with valve seat 1, the other end
It is fixedly connected by bolt with butterfly plate 11；The top of valve body 9 is fixedly connected by bolt with valve deck 2；The valve body 9 and valve seat 1
Binding face between valve deck 2 is mounted on sealing ring；The sealing element 15 is fastened on butterfly plate by 16 bolt of sealing element pressing plate
On 11, for sealing element 15 between butterfly plate 11 and sealing element pressing plate 16, outer rim exceeds the outer edge of butterfly plate 11；Valve body 9 with it is close
The cooperation of sealing 15 forms sealing pair；The outside weldings of the valve body 9 have hollow cylinder 3；The valve shaft 19 is located at 9 He of valve body
In cylinder 3,19 one end of valve shaft is connected through cylinder 3 by tight fixed bolt with driving device 24, and the other end is with sliding shaft coupling
Device 18 connects；It is sealed between the valve shaft 19 and cylinder 3 by airtight and watertight padding and gland 23；The airtight and watertight padding storage
In stuffing-box 22；The stuffing-box 22 is sealed by Packing seat 21；The axle sleeve 20 is installed on outside valve shaft 19, positioned at cylinder
In 3, play axial limiting to movement of the valve shaft 19 in valve body 9；The positioning of first positioning supporting frame 17 and second branch
Support 14 is welded in valve body 9, and vertical with valve shaft 19, ensures that valve shaft 19 is horizontal；On the right side of the lower part of the first connecting rod 4
It is connected by the right axis pin 41 of first connecting rod with the first positioning supporting frame 17 and slip coupling 18, the lower left side of first connecting rod 4
It is connected by the left axis pin 42 of first connecting rod with the second positioning supporting frame 14；The top of the first connecting rod 4 passes through axis pin fastener 5
It is connected with 6 one end of second connecting rod, the other end of the second connecting rod 6 is connected by axis pin with one end of limiting plate 7, limiting plate 7
The other end be connected by axis pin with the supporting rack 10 on the butterfly plate 11；One end of the third connecting rod 12 is tight by axis pin
Firmware 5 is connected with first connecting rod 4 and second connecting rod 6；12 other end of third connecting rod is by axis pin with being mounted on butterfly plate 11
Link 13 connect；9 inner wall of valve body is provided with valve body guide rail 8；Butterfly plate shaft 25 is installed, butterfly plate turns on the butterfly plate 11
Axis 25 coordinates with valve body guide rail 8, and butterfly plate shaft 25 moves in the valve body guide rail 8 of 9 inside of valve body, and butterfly plate 11 can be along valve body 9
Center line translation.
The outside of the cylinder 3 is welded with stiffener plate, and stiffener plate is welded on valve body 9, with improve cylinder 3 with
Bonding strength between valve body 9 increases service life.
4 top of first connecting rod is pore structure, for being connected with second connecting rod 6 and third connecting rod 12；Lower part or so two
Side is with the rod structure led in the right axis pin 41 of first connecting rod and the left axis pin 42 of first connecting rod；The right side of lower part has first connecting rod
Right axis pin 41, for being connected with the first positioning supporting frame 17 and slip coupling 18；The left side of lower part has the left pin of first connecting rod
Axis 42, for being connected with the second positioning supporting frame 14.Middle part is hollow.
The sealing pair that the pivot center (i.e. 19 central axes of valve shaft) of the butterfly plate 11 is formed with valve body 9 and the cooperation of sealing element 15
There are certain distance between plane (cross section of 19 central axis upright of sealing surface and valve shaft), this distance is referred to as axially eccentric,
So that butterfly valve has three eccentricity structure, the purpose is to the three linkages device is made to have certain operating space.
The inner headed face of the valve seat 1 is the positive round conical surface, and manufacturing process is simple, at low cost, reliable operation.The sealing ring
It can guarantee that butterfly valve has good sealing performance.The outer edge surface of the sealing element 15 uses and 1 inner headed face of installing type valve seat
The identical positive round conical surface of cone angle.(second connecting rod 6 and limiting plate 7 are equal to for the first connecting rod 4, second connecting rod 6 and limiting plate 7
One bar) and three linkages of composition of third connecting rod 12.
The operation principle and workflow of three rod-type butterfly valves of the invention be：
Valve opening moment, valve shaft 19 rotate under the action of driving device 24, and rotational movement first connecting rod 4 is around valve
The central axes of axis 19 rotate, so as in this role limiting plate 7 be driven to rotate.At this point, the effect that limiting plate 7 does not stress simply exists
It is rotated under the action of second connecting rod 6 around the one end being connected with supporting rack 10, first connecting rod 4, third connecting rod 12 and butterfly plate 11 form
Slider-crank mechanism, butterfly plate 11 is driven to make linear motion to left along 11 central axial direction of butterfly plate so that valve seat 1 with
Sealing element 15 disengages a distance, greatly reduces the pressure of 9 inner cavity of valve body.Until the end that limiting plate 7 and supporting rack 10 connect
Face is overlapped with butterfly plate 11, and second connecting rod 6 is equal to a bar with limiting plate 7, and three bars are formed with first connecting rod 4, third connecting rod 12
Mechanism drives butterfly plate 11 to be rotated by 90 ° in friction free along the central axes of valve shaft 19, opens valve.During this due to
The structure of first connecting rod 4 is hollow, avoids when first connecting rod 4 rotates and is interfered with third connecting rod 12.Limiting plate 7 is one
A indexing mechanism.
When valve is closed, (second connecting rod 6 and limiting plate 7 are equal to one for first connecting rod 4, second connecting rod 6 and limiting plate 7
Bar), third connecting rod 12 form three linkages drive butterfly plate 11 reversely revolved along the central axes of valve shaft 19 in friction free
Turn 90 °, there are certain distances, the central axis of the two between valve seat 1 and sealing element 15 at this time to be in overlapping positions；Then first
Connecting rod 4 drives limiting plate 7 to rotate, and until the side of limiting plate 7 is overlapped with butterfly plate 11, (side of the limiting plate 7 is limiting plate 7
On perpendicular to the face for the end face that limiting plate 7 and supporting rack 10 connect), first connecting rod 4, third connecting rod 12 and butterfly plate 11 form
Slider-crank mechanism drives butterfly plate 11 to make the linear motion to right translation along 11 central axial direction of butterfly plate, presses to airtight and watertight padding,
Sealing surface is fully sealed, and valve is closed.
Used when the installation site or direction of structure or parts described in three rod-type butterfly valves of the invention " on ", " under ",
"left", "right", " interior ", " outer " etc. is using the orientation of given attached drawing as foundation, they are convenient just for the sake of statement, for distinguishing
Each component or the relative position in direction do not represent orientation when butterfly valve of the present invention uses.
The present invention does not address part and is suitable for the prior art.
Claims (3)
1. a kind of three rod-type butterfly valves, including valve seat, valve deck, cylinder, axis pin fastener, valve body, butterfly plate, sealing element, sealing element
Pressing plate, driving device, valve shaft, Packing seat, stuffing-box and gland；One end of the valve body is fixedly connected with valve seat；Valve body
Top be fixedly connected with valve deck；Binding face between the valve body and valve seat is equipped with sealing ring；The valve body and valve deck it
Between binding face sealing ring is installed；The sealing element is fastened on by sealing element follower bolt on butterfly plate, and sealing element is located at butterfly
Between plate and sealing element pressing plate；Valve body forms sealing pair with sealing element cooperation；The outside of the valve body is equipped with hollow cylinder
Body；The valve shaft is located in valve body and cylinder, and valve shaft one end is connected through cylinder with driving device, valve shaft and cylinder it
Between pass through airtight and watertight padding and gland and seal；The airtight and watertight padding is stored in stuffing-box；The stuffing-box is close by Packing seat
Envelope；
It is characterized in that the butterfly valve further includes first connecting rod, second connecting rod, limiting plate, valve body guide rail, supporting rack, the 3rd company
Bar, link, the second positioning supporting frame, the first positioning supporting frame, slip coupling, axle sleeve and butterfly plate shaft；The valve shaft
The other end is connected with slip coupling；The axle sleeve is installed on outside valve shaft, in cylinder；First positioning supporting frame
It is fixedly mounted on the second positioning supporting frame in valve body, it is vertical with valve shaft perpendicular to horizontal plane, and；The first connecting rod
It is connected on the right side of lower part by the right axis pin of first connecting rod with the first positioning supporting frame and slip coupling, the lower left side of first connecting rod
It is connected by the left axis pin of first connecting rod with the second positioning supporting frame；Be in the middle part of the first connecting rod it is hollow, first connecting rod
Top is connected by axis pin fastener with second connecting rod one end；The other end of the second connecting rod and one end of limiting plate, which rotate, to be connected
It connects, the other end of limiting plate is rotatablely connected with the supporting rack on butterfly plate；One end of the third connecting rod is tight by axis pin
Firmware is connected with first connecting rod and second connecting rod；The third connecting rod other end is connected with the link on butterfly plate；Institute
It states valve interior wall and is provided with valve body guide rail；Butterfly plate shaft is installed, butterfly plate shaft coordinates with valve body guide rail on the butterfly plate.
2. three rod-types butterfly valve according to claim 1, it is characterised in that the circular in cross-section of the valve body.
3. three rod-types butterfly valve according to claim 1, it is characterised in that stiffener plate is welded on the outside of the cylinder,
Stiffener plate is welded on valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610969642.1A CN106286865B (en) | 2016-11-07 | 2016-11-07 | A kind of three rod-type butterfly valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610969642.1A CN106286865B (en) | 2016-11-07 | 2016-11-07 | A kind of three rod-type butterfly valves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106286865A CN106286865A (en) | 2017-01-04 |
| CN106286865B true CN106286865B (en) | 2018-05-25 |
Family
ID=57720846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610969642.1A Active CN106286865B (en) | 2016-11-07 | 2016-11-07 | A kind of three rod-type butterfly valves |
Country Status (1)
| Country | Link |
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| CN (1) | CN106286865B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2008359B2 (en) * | 1970-02-23 | 1972-09-28 | Th. Jansen Gmbh, 6672 Rohrbach | FLAP VALVE |
| US6684895B2 (en) * | 2002-03-08 | 2004-02-03 | Joseph Licari Sclease | Fluid control valve apparatus and method |
| CN2746215Y (en) * | 2004-12-09 | 2005-12-14 | 秦皇岛冶金机械有限公司 | Three-rod cut-off butterfly valve |
| CN2830809Y (en) * | 2005-10-28 | 2006-10-25 | 世林（漯河）冶金设备有限公司 | Lever type cut-off butterfly valve |
| CN206130130U (en) * | 2016-11-07 | 2017-04-26 | 河北工业大学 | Three -pole type butterfly valve |
-
2016
- 2016-11-07 CN CN201610969642.1A patent/CN106286865B/en active Active
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| CN106286865A (en) | 2017-01-04 |
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