CN106286865A - A kind of three rod-type butterfly valves - Google Patents
A kind of three rod-type butterfly valves Download PDFInfo
- Publication number
- CN106286865A CN106286865A CN201610969642.1A CN201610969642A CN106286865A CN 106286865 A CN106286865 A CN 106286865A CN 201610969642 A CN201610969642 A CN 201610969642A CN 106286865 A CN106286865 A CN 106286865A
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- Prior art keywords
- valve
- connecting rod
- butterfly
- valve body
- butterfly 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.)
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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 gap, cylinder, bearing pin securing member, valve body, butterfly plate, sealing member, sealing member pressing plate, driving means, valve shaft, Packing seat, stuffing-box, gland, first connecting rod, second connecting rod, limiting plate, valve body guide rail, bracing frame, third connecting rod, link, the second positioning supporting frame, the first positioning supporting frame, slip coupling, axle sleeve and butterfly plate rotating shaft；Three linkages are made up of indexing mechanism and slider-crank mechanism, and the effect of slider-crank mechanism is first to translate a segment distance butterfly plate switchs when then rotating；The effect of indexing mechanism is exactly butterfly plate switch translation when, controls it and does not rotates, and after butterfly plate lifts off a seat a segment distance, butterfly plate just starts rotary work.This butterfly valve passes through indexing mechanism and the ingenious cooperation of slider-crank mechanism, is the translation along axis and rotary motion by the conversion of motion that rotates in a circumferential direction, it is to avoid butterfly plate friction when rotating and between sealing pair.
Description
Technical field
The present invention relates to machinery, 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 this body cavity, butterfly plate position
In the inner chamber of valve seat.The operation principle of three bar butterfly valves is to be driven power transmission shaft to rotate by drive mechanism, and power transmission shaft drives transmission even
Bar, kinematic link band ovable valve stem, valve rod drives butterfly plate to rotate, butterfly plate rotate after its edge and valve base sealing or open.Cause
This, realize the keying of valve by linkage.But, butterfly plate switching moments during opening and closing, the motion of butterfly plate is one
The circular arc that section is smaller, can interfere with valve seat, there is impact resistance simultaneously and endeavour square increase between sealing pair.Therefore, frequently
Numerous keying easily causes sealing surface wear and accelerates, and sealing property declines, and ultimately results in valve leak.Application number 03279456.8
Disclosing a kind of three rod-type butterfly valves, this butterfly valve preferably solves this problem: joined by support between its valve body and driving means
Knot, valve shaft is arranged in valve body, and valve shaft one end is stretched in driving means, and the two is by bonded.Valve shaft and valve body pass through filler
Sealing with gland, valve shaft makees axial limiting by split annulus in valve body, equipped with connecting rod and connecting plate on valve shaft, connects
Bar is connected by keying surely with valve shaft, and connecting plate is with valve shaft for being flexibly connected, and valve shaft can rotate in connecting plate.Fixed plate is welded
Being connected in valve body, connecting plate is connected by screw bolt and nut is fixing with fixed plate.Roller is arranged in the groove of connecting plate, can be around
The center of circle rotates, and roller and butterfly plate are connected by bearing pin, and connecting rod is connected by rotating shaft with butterfly plate.Adjusting pad is arranged in end cap,
End cap is arranged on body base flange, pile-up welding hard alloy at the butterfly plate sealing surface with valve seat.During action, driving means band
Dynamic valve shaft, valve shaft rotates with connecting rod, and connecting rod drives butterfly plate motion, and meanwhile, butterfly plate is rotated around its circle centre position by roller,
Its principle is equivalent to three linkages, and the movement locus of butterfly plate is first to translate to rotate afterwards.During closedown, butterfly plate first rotates, and puts down afterwards
Move, butterfly plate parallel against valve seat.Sealing leak problem is addressed, and extends the service life of three bar butterfly valves.But this butterfly
Valve still suffers from deficiency: the structure precision actual requirement relevant to described three linkages is the highest, processing difficulties, and frock program is complicated
And it is added significantly to product cost.
Summary of the invention
For the deficiencies in the prior art, the technical problem that the present invention intends to solve is to provide a kind of three rod-type butterfly valves.This butterfly valve
Operationally by opening and closing the motion that moment translation rotates the most again, complete zero abrasion between butterfly plate and valve seat, by three rod-types
Mechanism achieves the butterfly valve movement needs without abrasion plus indexing mechanism；Simple in construction simultaneously, easy to manufacture, with low cost, make
Use the life-span long.
The present invention solves the technical scheme of described technical problem and is to provide a kind of three rod-type butterfly valves, including valve seat, valve gap,
Cylinder, bearing pin securing member, valve body, butterfly plate, sealing member, sealing member pressing plate, driving means, valve shaft, Packing seat, stuffing-box and fill out
Material gland；One end of described valve body is fixing with valve seat to be connected, and the other end is fixing with butterfly plate to be connected；The top of valve body is fixed with valve gap
Connect；Binding face between described valve body and valve seat is provided with sealing ring；Binding face between described valve body and valve gap is provided with
Sealing ring；Described sealing member is fastened on butterfly plate by sealing member follower bolt, sealing member be positioned at butterfly plate and sealing member pressing plate it
Between；Valve body coordinates composition sealing pair with sealing member；The outside of described valve body is provided with the cylinder of hollow；Described valve shaft is positioned at valve
In body and cylinder, valve shaft one end is connected with driving means through cylinder, pass through between valve shaft and cylinder airtight and watertight padding and
Gland seals；Described airtight and watertight padding is left in stuffing-box；Described stuffing-box is sealed by Packing seat；
It is characterized in that described butterfly valve also include first connecting rod, second connecting rod, limiting plate, valve body guide rail, bracing frame, the 3rd
Connecting rod, link, the second positioning supporting frame, the first positioning supporting frame, slip coupling, axle sleeve and butterfly plate rotating shaft；Described valve shaft
The other end be connected with slip coupling；Described axle sleeve is installed on outside valve shaft, is positioned at cylinder；Described first location supports
Frame and the second positioning supporting frame are fixedly mounted in valve body, are perpendicular to horizontal plane, and all vertical with valve shaft；Described first connecting rod
Bottom on the right side of connected by the right bearing pin of first connecting rod and the first positioning supporting frame and slip coupling, a left side, bottom for first connecting rod
Side is connected by the left bearing pin of first connecting rod and the second positioning supporting frame；The middle part of described first connecting rod is hollow, first connecting rod
Top be connected with second connecting rod one end by bearing pin securing member；The other end of described second connecting rod connects with one end of limiting plate
Connecing, the other end of limiting plate is connected with the bracing frame being arranged on butterfly plate；Bearing pin securing member is passed through in one end of described third connecting rod
It is connected with first connecting rod and second connecting rod；The described third connecting rod other end is connected with the link being arranged on butterfly plate；Described valve
Internal wall has valve body guide rail；Being provided with butterfly plate rotating shaft on described butterfly plate, butterfly plate rotating shaft coordinates with valve body guide rail.
Compared with prior art, the present invention has the beneficial effects that:
1. usefulness 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+
Rotate " compound motion track: three linkages are made up of indexing mechanism and slider-crank mechanism, and the effect of slider-crank mechanism is
In the case of first connecting rod rotates, butterfly plate can keep horizontal direction displacement, can first translate one butterfly plate switchs when
Then segment distance is rotating；The effect of indexing mechanism is exactly butterfly plate switch translation when, controls it and does not rotates, works as butterfly
Plate is lifted off a seat after a segment distance, and butterfly plate just starts rotary work.Thus form the compound motion rail of butterfly plate " translation+rotate "
Mark.The design of this " translation+rotate " avoids butterfly plate and produces frictional force when rotating and between sealing pair, can alleviate or disappear
Except impact resistance between sealing pair during valve switch, and when opening butterfly plate, the pressure medium on butterfly plate both sides has laid down major part,
Being greatly reduced so opening and closing moment, about the 10% of the most general butterfly valve, driving means can be made to reduce accordingly, thus reduce into
This, saved the energy, improve keying speed simultaneously.
2. life.Butterfly valve of the present invention is when opening butterfly plate, owing to sealing member disengages in advance, and the pressure differential on butterfly plate both sides
Reduce, so the opening impact effect of butterfly plate is reduced by fluid media (medium), run noise and also reduce, so the shock resistance of butterfly valve is tired
Damage capability is greatly improved, and can make be brought up to hundreds of thousands by current thousand of times the service life of valve.Meanwhile, by three bars
Mechanism applies a force on butterfly plate so that butterfly plate carries out translating and overturn to be opened, close valve, the most also extends valve
Service life.
3. good airproof performance.The motion that butterfly plate of the present invention keying moment translation rotates the most again effectively prevent tradition butterfly plate and opens
Close the abrasion that moment rotary motion brings, it is ensured that good sealing property.
The most easily fabricated.Butterfly valve structure of the present invention is compact, and the volume of valve and weight ratio are relatively light, operate simple light, produce
Manufacture is easier.
5. structural behaviour is stable.By being provided with two positioning supporting frames between valve body and first connecting rod, at butterfly plate and
The link that arranges between two connecting rods and add reinforcement and make structure firmer, extends the service life of three bar butterfly valves.
Valve body guide rail coordinates with butterfly plate rotating shaft, it is ensured that the linear motion of valve opening moment butterfly plate, makes motion the most accurate, controls more
Add conveniently.
6. design concept is novel.Butterfly valve of the present invention passes through indexing mechanism and the ingenious cooperation of slider-crank mechanism, by one
The conversion of motion that rotates in a circumferential direction is a translation along axis and a rotary motion, it is achieved thereby that butterfly plate elder generation translation one section away from
From, make sealing member depart from valve seat, Unscrew in the case of friction free the most again.Avoid butterfly plate and open moment sealing member
Friction with valve seat, it is ensured that sealing is good.First connecting rod structure is the rod-like structure of hollow, it is to avoid during link motion
Interfere, it is ensured that the stability of structure.
Accompanying drawing explanation
Fig. 1 is that the overall structure axle of the present invention three a kind of embodiment of rod-type butterfly valve measures intention；
Fig. 2 is the sectional structure schematic diagram in the present invention three rod-type butterfly valve A-A direction along Fig. 1；
Fig. 3 is the sectional structure schematic diagram in the present invention three rod-type butterfly valve B-B direction along Fig. 2；
Fig. 4 is the partial enlargement structural representation in the present invention three rod-type butterfly valve Fig. 3 at I；
Fig. 5 is that the axle of the first connecting rod of the present invention three a kind of embodiment of rod-type butterfly valve measures intention；(in figure: 1, valve seat；2、
Valve gap；3, cylinder；4, first connecting rod；41, the right bearing pin of first connecting rod；42, the left bearing pin of first connecting rod；5, bearing pin securing member；6、
Second connecting rod；7, limiting plate；8, valve body guide rail；9, valve body；10, bracing frame；11, butterfly plate；12, third connecting rod；13, link；
14, the second positioning supporting frame；15, sealing member；16, sealing member pressing plate；17, the first positioning supporting frame；18, slip coupling；19、
Valve shaft；20, axle sleeve；21, Packing seat；22, stuffing-box；23, gland；24, driving means；25, butterfly plate rotating shaft；
Detailed description of the invention
The specific embodiment of the present invention is given below.Specific embodiment is only used for further describing the present invention, does not limits
The application scope of the claims processed.
The invention provides a kind of three rod-type butterfly valves (being called for short butterfly valve, see Fig. 1-5), including valve seat 1, valve gap 2, cylinder
3, first connecting rod 4, bearing pin securing member 5, second connecting rod 6, limiting plate 7, valve body guide rail 8, valve body 9, bracing frame 10, butterfly plate 11,
Three connecting rods 12, link the 13, second positioning supporting frame 14, sealing member 15, sealing member pressing plate the 16, 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 means 24 and butterfly plate rotating shaft 25；
The circular in cross-section of described valve body 9；One end of described valve body 9 is connected by bolt is fixing with valve seat 1, the other end
It is connected by bolt is fixing with butterfly plate 11；The top of valve body 9 is connected by bolt is fixing with valve gap 2；Described valve body 9 and valve seat 1
With the binding face between valve gap 2 is mounted on sealing ring；Described sealing member 15 is fastened on butterfly plate by sealing member pressing plate 16 bolt
On 11, sealing member 15 is between butterfly plate 11 and sealing member pressing plate 16, and its outer rim is beyond the outward flange of butterfly plate 11；Valve body 9 is with close
Sealing 15 coordinates composition sealing pair；The outside weldings of described valve body 9 has the cylinder 3 of hollow；Described valve shaft 19 is positioned at valve body 9 He
In cylinder 3, valve shaft 19 one end is connected with driving means 24 through cylinder 3 by tight fixed bolt, the other end and slip shaft coupling
Device 18 connects；Sealed by airtight and watertight padding and gland 23 between described valve shaft 19 and cylinder 3；Described airtight and watertight padding is deposited
In stuffing-box 22；Described stuffing-box 22 is sealed by Packing seat 21；It is outside that described axle sleeve 20 is installed on valve shaft 19, is positioned at cylinder
Effect in 3, to the valve shaft 19 axial limiting that moved in valve body 9；Described first positioning supporting frame 17 and the second location
Support 14 is welded in valve body 9, and all vertical with valve shaft 19, it is ensured that valve shaft 19 level；On the right side of the bottom of described first connecting rod 4
It is connected with the first positioning supporting frame 17 and slip coupling 18 by the right bearing pin of first connecting rod 41, the lower left side of first connecting rod 4
It is connected with the second positioning supporting frame 14 by the left bearing pin of first connecting rod 42；Bearing pin securing member 5 is passed through on the top of described first connecting rod 4
Being connected with second connecting rod 6 one end, the other end of described second connecting rod 6 is connected with one end of limiting plate 7 by bearing pin, limiting plate 7
The other end be connected with the bracing frame 10 being arranged on butterfly plate 11 by bearing pin；One end of described third connecting rod 12 is tight by bearing pin
Firmware 5 is connected with first connecting rod 4 and second connecting rod 6；Described third connecting rod 12 other end passes through bearing pin and is arranged on butterfly plate 11
Link 13 connect；Described valve body 9 inwall has valve body guide rail 8；Being provided with butterfly plate rotating shaft 25 on described butterfly plate 11, butterfly plate turns
Axle 25 coordinates with valve body guide rail 8, moves in the butterfly plate rotating shaft 25 valve body guide rail 8 inside valve body 9, and butterfly plate 11 can be along valve body 9
The translation of centrage.
The outside of described cylinder 3 is welded with reinforcement gusset, strengthens gusset and is welded on valve body 9, with improve cylinder 3 with
Bonding strength between valve body 9, increases service life.
Described first connecting rod 4 top is pore structure, for being connected with second connecting rod 6 and third connecting rod 12；About bottom two
Side is with bar structure logical in the right bearing pin of first connecting rod 41 and the left bearing pin of first connecting rod 42；The right side of bottom has first connecting rod
Right bearing pin 41, for being connected with the first positioning supporting frame 17 and slip coupling 18；The left side of bottom has the left pin of first connecting rod
Axle 42, for being connected with the second positioning supporting frame 14.Middle part is hollow.
The pivot center (i.e. valve shaft 19 axis) of described butterfly plate 11 coordinates the sealing pair constituted with valve body 9 and sealing member 15
There is certain distance between (sealing surface and the transverse section of valve shaft 19 central axis upright) in plane, this distance is the most axially eccentric,
Make butterfly valve have three eccentricity structure, its objective is to make described three linkage devices have certain working place.
The inner headed face of described valve seat 1 is the positive round conical surface, and its manufacturing process is simple, low cost, reliable operation.Described sealing ring
Can guarantee that butterfly valve has good sealing property.The outer edge surface of described sealing member 15 uses and described installing type valve seat 1 inner headed face
The positive round conical surface that cone angle is identical.(second connecting rod 6 and limiting plate 7 are equal to for described first connecting rod 4, second connecting rod 6 and limiting plate 7
One bar) form three linkages with third connecting rod 12.
Operation principle and the workflow of the present invention three rod-type butterfly valve be:
Valve opening moment, valve shaft 19 rotates under the effect of driving means 24, and rotational movement first connecting rod 4 is around valve
The axis of axle 19 rotates, thus drives limiting plate 7 to rotate in this role.Now, the effect that limiting plate 7 does not stresses simply exists
Rotating around the one end being connected with bracing frame 10 under the effect of second connecting rod 6, first connecting rod 4, third connecting rod 12 and butterfly plate 11 form
Slider-crank mechanism, drive butterfly plate 11 to make to the linear motion of left along butterfly plate 11 central axial direction so that valve seat 1 with
Sealing member 15 disengages a segment distance, makes the pressure of valve body 9 inner chamber be greatly reduced.Until the end that limiting plate 7 and bracing frame 10 connect
Face overlaps with butterfly plate 11, and second connecting rod 6 and limiting plate 7 are equal to a bar, form three bars with first connecting rod 4, third connecting rod 12
Mechanism drives butterfly plate 11 along the axis half-twist of valve shaft 19 in the case of friction free, makes valve open.During this due to
The structure of first connecting rod 4 is hollow, it is to avoid interfere with third connecting rod 12 when first connecting rod 4 rotates.Limiting plate 7 is one
Individual indexing mechanism.
During valve closing, (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 composition three linkages drive butterfly plates 11 reversely revolve along the axis of valve shaft 19 in the case of friction free
Turning 90 °, now there is certain distance between valve seat 1 and sealing member 15, both central axis are in overlapping positions；Then first
Connecting rod 4 drives limiting plate 7 to rotate, and until the side of limiting plate 7 overlaps with butterfly plate 11, (side of described limiting plate 7 is limiting plate 7
On the face being perpendicular to the end face that limiting plate 7 and bracing frame 10 connect), first connecting rod 4, third connecting rod 12 and butterfly plate 11 composition
Slider-crank mechanism drives butterfly plate 11 to make the linear motion to right translation along butterfly plate 11 central axial direction, presses to airtight and watertight padding,
Sealing surface fully seals, valve closing.
Used when structure or the installation site of parts or direction described in the present invention three rod-type butterfly valve " on ", D score,
"left", "right", " interior ", " outward " etc. be with to the orientation of accompanying drawing as foundation, it is convenient that they are only used to statement, is used for distinguishing
Each parts or the relative position in direction, do not represent orientation when butterfly valve of the present invention uses.
The present invention does not addresses part and is applicable to prior art.
Claims (3)
1. a three rod-type butterfly valve, including valve seat, valve gap, cylinder, bearing pin securing member, valve body, butterfly plate, sealing member, sealing member
Pressing plate, driving means, valve shaft, Packing seat, stuffing-box and gland；One end of described valve body is fixing with valve seat to be connected, another
Hold be connected fixing with butterfly plate；The top of valve body is fixing with valve gap to be connected；Binding face between described valve body and valve seat is provided with close
Seal；Binding face between described valve body and valve gap is provided with sealing ring；Described sealing member is fastened by sealing member follower bolt
On butterfly plate, sealing member is between butterfly plate and sealing member pressing plate；Valve body coordinates composition sealing pair with sealing member；Described valve body
Outside is provided with the cylinder of hollow；Described valve shaft is positioned at valve body and cylinder, and valve shaft one end fills through cylinder with driving
Put connection, sealed by airtight and watertight padding and gland between valve shaft and cylinder；Described airtight and watertight padding is left in stuffing-box；
Described stuffing-box is sealed by Packing seat；
It is characterized in that described butterfly valve also includes first connecting rod, second connecting rod, limiting plate, valve body guide rail, bracing frame, the 3rd company
Bar, link, the second positioning supporting frame, the first positioning supporting frame, slip coupling, axle sleeve and butterfly plate rotating shaft；Described valve shaft
The other end is connected with slip coupling；Described axle sleeve is installed on outside valve shaft, is positioned at cylinder；Described first positioning supporting frame
It is fixedly mounted in valve body with the second positioning supporting frame, is perpendicular to horizontal plane, and all vertical with valve shaft；Described first connecting rod
Connected by the right bearing pin of first connecting rod and the first positioning supporting frame and slip coupling on the right side of bottom, the lower left side of first connecting rod
Connected by the left bearing pin of first connecting rod and the second positioning supporting frame；The middle part of described first connecting rod is hollow, first connecting rod
Top is connected with second connecting rod one end by bearing pin securing member；The other end of described second connecting rod is connected with one end of limiting plate,
The other end of limiting plate is connected with the bracing frame being arranged on butterfly plate；One end of described third connecting rod is by bearing pin securing member and the
One connecting rod and second connecting rod connect；The described third connecting rod other end is connected with the link being arranged on butterfly plate；In described valve body
Wall has valve body guide rail；Being provided with butterfly plate rotating shaft on described butterfly plate, butterfly plate rotating shaft coordinates with valve body guide rail.
Three rod-type butterfly valves the most according to claim 1, it is characterised in that the circular in cross-section of described valve body.
Three rod-type butterfly valves the most according to claim 1, it is characterised in that described cylindrical outside is welded with reinforcement gusset,
Strengthen gusset to be 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 true CN106286865A (en) | 2017-01-04 |
| CN106286865B 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 |
|---|---|
| CN (1) | CN106286865B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3669405A (en) * | 1970-02-23 | 1972-06-13 | Jansen Gmbh Th | Flap valve |
| US20030168098A1 (en) * | 2002-03-08 | 2003-09-11 | Sclease Joseph Licari | 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
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3669405A (en) * | 1970-02-23 | 1972-06-13 | Jansen Gmbh Th | Flap valve |
| US20030168098A1 (en) * | 2002-03-08 | 2003-09-11 | Sclease Joseph Licari | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106286865B (en) | 2018-05-25 |
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