CN108547956A - A kind of self sealss movement butterfly plate low temperature butterfly valve - Google Patents
A kind of self sealss movement butterfly plate low temperature butterfly valve Download PDFInfo
- Publication number
- CN108547956A CN108547956A CN201810522534.9A CN201810522534A CN108547956A CN 108547956 A CN108547956 A CN 108547956A CN 201810522534 A CN201810522534 A CN 201810522534A CN 108547956 A CN108547956 A CN 108547956A
- Authority
- CN
- China
- Prior art keywords
- butterfly plate
- valve
- butterfly
- mobile
- valve rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 241000283216 Phocidae Species 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 210000004907 gland Anatomy 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 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
- F16K1/228—Movable sealing bodies
- F16K1/2285—Movable sealing bodies the movement being caused by the flowing medium
-
- 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
- F16K1/222—Shaping of 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
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
-
- 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
- F16K27/12—Covers for housings
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
A kind of self sealss movement butterfly plate low temperature butterfly valve, including valve body, valve rod, butterfly plate seal assembly and driving device, valve rod sequentially passes through extension pipe, upper valve neck and lower valve neck from top to bottom, driving device is arranged at the top of extension pipe, the power output end of driving device and the upper end of valve rod are sequentially connected, butterfly plate seal assembly includes annular pressing plate, sealing ring, butterfly plate frame and mobile butterfly plate, valve body right output port inner wall offers annular mounting groove, sealing ring is fixed in annular mounting groove by annular pressing plate, and annular pressing plate is connected to valve body right part by hold-down bolt.Present invention employs mobile butterfly plates as compensating part, and the present invention solves the compensation under worst cold case, pushes mobile butterfly plate to sealing surface using pressure medium, pressure more high sealing is closer, and self sealss effect is better.The present invention can be not only used for cryogenic media, can be also used for the mixture condition under room temperature and high temperature, be a pioneering and creative novel valve.
Description
Technical field
The invention belongs to valve technology fields more particularly to a kind of self sealss to move butterfly plate low temperature butterfly valve.
Background technology
The extensive use on liquid nitrogen LN2, liquid oxygen LO2 and LNG pipeline of low temperature butterfly valve.The butterfly plate of low temperature butterfly valve
Structure is monoblock cast structure, and valve rod penetrates the axis ear cylinder pin connection on butterfly plate, and driving device rotation valve rod drives butterfly plate
Do in the channel 0~90 ° rotated unlatching, close medium be used.Analysis is asked there is butterfly plate is poorly sealed from existing structure
Topic, the reason is that due to changing in -100 DEG C of low temperature or less butterfly plate contract on cooling, closure size, and butterfly plate is fixed
There is no motion compensation function, so be easy to causeing sealing leak.
Invention content
The present invention in order to solve shortcoming in the prior art, provide a kind of butterfly plate using separate structure, in low temperature item
It can ensure that the self sealss movement butterfly plate low temperature butterfly valve of leakproofness under part.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：A kind of self sealss movement butterfly plate low temperature butterfly valve,
Including valve body, valve rod, butterfly plate seal assembly and driving device, body top and bottom are fixedly installed upper valve neck and lower valve respectively
The center line of neck, upper valve neck and lower valve neck overlaps and the center line passes through the center of valve body, and upper valve neck top is coaxial to be connected with
Extension pipe, valve rod sequentially pass through extension pipe, upper valve neck and lower valve neck from top to bottom, and lower valve neck bottom is provided with bottom cover and sealing
Pad, upper valve neck are internally provided with the guide sleeve being sleeved on outside valve rod, and being provided with sealing between valve rod outer wall inside extension pipe upper end fills out
Material and gland component, driving device are arranged in the top of extension pipe, the power output end of driving device and the upper end of valve rod
It is sequentially connected, butterfly plate seal assembly includes that annular pressing plate, sealing ring, butterfly plate frame and mobile butterfly plate, valve body right output port inner wall open up
There are annular mounting groove, annular pressing plate that sealing ring is fixed in annular mounting groove, annular pressing plate is connected to valve by hold-down bolt
Body right part；
Butterfly plate frame and mobile butterfly plate are respectively positioned in valve body, and butterfly plate frame is fixedly connected by the straight pin being arranged along valve rod radial direction
On valve rod, correspondence offers several grooves between mobile butterfly plate left side, several grooves are along the circumferencial direction for moving butterfly plate
Be evenly arranged, compressed spring be installed in groove, the left end and right end of compressed spring respectively on the right side of butterfly plate frame with mobile butterfly plate
Top pressure between left side；It is connected by several attachment screws between butterfly plate and mobile butterfly plate, butterfly is moved on several attachment screws edge
The circumferencial direction of plate is evenly arranged, and attachment screw is is threadedly coupled with mobile butterfly plate, the bar portion of attachment screw with move butterfly plate it
Between for absent-mindedness connection；Under the action of compressed spring, the head of attachment screw and butterfly plate frame press fit, butterfly plate frame and mobile butterfly
There is buffer gap between plate；The outer circumference surface of mobile butterfly plate is left thick right thin conical structure, the excircle of mobile butterfly plate
Face crimps sealing cooperation with sealing ring.
Attachment screw and the mode of the absent-mindedness connection of butterfly plate frame are：Butterfly plate frame offers several counter sinks, counter sink
The internal diameter of left side is more than the internal diameter of right side, and each attachment screw is extended through counter sink, attachment screw from left to right
Bar portion and counter sink thinner right side clearance fit, the head of attachment screw is arranged in the thicker left side of counter sink
It is interior.
The penetrating liquid drain hole in left and right is offered in the middle part of butterfly plate frame, mobile butterfly plate left side is provided with step groove, and butterfly plate frame is right
Side is provided with ring-shaped step, and ring-shaped step extend into step groove and horizontally slips cooperation with step groove.
Driving device includes holder, turbine box and handwheel, and holder is arranged to be provided in the upper end of extension pipe, turbine box
Worm and worm-wheel gearing, valve rod upper end pass through holder and extend into turbine box and worm gear mechanism worm gear it is coaxially connected,
The worm screw of worm gear mechanism stretches out turbine box, and handwheel is coaxial to be installed on worm screw.
Frame bottom is provided with the rubber protective cover of lower end opening, and rubber protective cover is in up-thin-low-thick conical structure,
Rubber protective cover is sleeved on the outside on extension pipe top.
Using above-mentioned technical proposal, monoblock type butterfly plate is designed to two parts by the present invention, when butterfly plate frame, second is that mobile butterfly
Plate.Butterfly plate frame and valve rod cylinder pin connection, mobile butterfly plate are connect with butterfly plate frame with interior hexagonal attachment screw, mobile butterfly plate and butterfly
There are buffer gap between grillage, mobile butterfly plate is enable to be moved within the scope of small―gap suture.The spacer portion in attachment screw distribution circle
Position plus several compressed springs are for pre-tightening firm mobile butterfly plate.
The working condition parsing of the present invention：Analysis of the medium power to sealing function when butterfly plate seal assembly works, rotates hand
Wheel is rotated by Worm and worm-wheel gearing band ovable valve stem in turbine box, when valve rod drives butterfly plate frame closing movement, mobile butterfly
Plate follows butterfly plate frame to rotate and moves closer to sealing ring, at this point, flow area reduces, media flow is obstructed, and left pressure increases,
Medium flows and pushes mobile butterfly plate minute movement to the right by the liquid drain hole on butterfly plate frame to the left side of mobile butterfly plate, at this moment closes
The position of the central axis of mobile butterfly plate and valve body in place is closed, medium reaches peak to the pressure of mobile butterfly plate, pushes
The active force of mobile butterfly plate to the right has also reached maximum, since mobile butterfly plate has certain amount of movement, the pressure of medium
Mobile butterfly plate can be pushed to compress sealing ring, the bigger sealing effect of pressure is better, to which the effect of the pressure by medium reaches from close
The effect of envelope.
The left side central portion of mobile butterfly plate is opened up there are one step groove, and medium can be entered by the liquid drain hole on butterfly plate frame
Mobile butterfly plate is pushed to move right in step groove；Ring-shaped step and being slidably matched for step groove define that mobile butterfly plate can only edge
Axis direction moves, and cannot radially move, and which ensures that have good sealing between mobile butterfly plate and sealing ring
Performance.
Since working environment of the present invention is at low temperature, dew condensation water, preventing rubber to be easy on the turbine box of valve stem top
The dew condensation water that cover prevents above, which drips on following valve body, forms ice of great thickness.
In conclusion present invention employs move butterfly plate as compensating part, since under cryogenic media operating mode, each part is met
The variation of cold events, the variation that each portion's size occurs, especially size of seal contact face influences sealing effect, or even reveals, institute
Make up the displacement that change in size is brought with design compensation part.So structure type of the invention solves worst cold case
Under compensation, push mobile butterfly plate to sealing surface using pressure medium, pressure more high sealing is closer, and self sealss effect is better.
Structure of the invention technique is easy to implement, reasonable design, and convenient maintenance and replacement is a kind of new structure, not only can be with
For cryogenic media, the mixture condition under room temperature and high temperature is can be also used for, is a pioneering and creative novel valve.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the enlarged drawing of butterfly plate seal assembly in Fig. 1.
Specific implementation mode
As depicted in figs. 1 and 2, butterfly plate low temperature butterfly valve, including valve body 1, valve rod 2, butterfly are moved in a kind of self sealss of the invention
Plate seal assemblies 3 and driving device, 1 top and bottom of valve body are fixedly installed upper valve neck 4 and lower valve neck 5,4 He of upper valve neck respectively
The center line of lower valve neck 5 overlaps and the center line passes through the center of valve body 1, and 4 top of upper valve neck is coaxial to be connected with extension pipe 6,
Valve rod 2 sequentially passes through extension pipe 6, upper valve neck 4 and lower valve neck 5 from top to bottom, and 5 bottom of lower valve neck is provided with bottom cover 7 and gasket
8, upper valve neck 4 is internally provided with the guide sleeve 9 being sleeved on outside valve rod 2, is provided between 2 outer wall of valve rod inside 6 upper end of extension pipe close
Packing material and gland component 10, driving device are arranged in the top of extension pipe 6, the power output end and valve rod of driving device
2 upper end is sequentially connected, and butterfly plate seal assembly 3 includes annular pressing plate 11, sealing ring 12, butterfly plate frame 13 and mobile butterfly plate 14, valve
1 right output port inner wall of body offers annular mounting groove, and sealing ring 12 is fixed in annular mounting groove by annular pressing plate 11, annular pressing plate
11 are connected to 1 right part of valve body by hold-down bolt 15；After sealing ring 12 is worn, hold-down bolt 15 can be backed out, annular is removed
Sealing ring 12 is replaced after pressing plate 11.
Butterfly plate frame 13 and mobile butterfly plate 14 are respectively positioned in valve body 1, and butterfly plate frame 13 passes through the circle that is arranged along 2 radial direction of valve rod
Pin 16 is fixedly connected on valve rod 2, and correspondence offers several grooves between 14 left side of mobile butterfly plate, several grooves are along shifting
The circumferencial direction of dynamic butterfly plate 14 is evenly arranged, and compressed spring 17, left end and the right end difference of compressed spring 17 are equipped in groove
The top pressure between 14 left side of 13 right side of butterfly plate frame and mobile butterfly plate；Pass through several attachment screws between butterfly plate and mobile butterfly plate 14
18 connections, several attachment screws 18 are evenly arranged along the circumferencial direction for moving butterfly plate 14, attachment screw 18 and mobile butterfly plate 14
It is absent-mindedness connection between the bar portion of attachment screw 18 and mobile butterfly plate 14 to be threadedly coupled；Under the action of compressed spring 17, even
Head and 13 press fit of butterfly plate frame for connecing screw 18, have buffer gap 19 between butterfly plate frame 13 and mobile butterfly plate 14；It is mobile
The outer circumference surface of butterfly plate 14 is left thick right thin conical structure, and the outer circumference surface of mobile butterfly plate 14 crimps sealing with sealing ring 12
Cooperation.
Attachment screw 18 and the mode of the absent-mindedness connection of butterfly plate frame 13 are：Butterfly plate frame 13 offers several counter sinks, sinks
The internal diameter of the left side of head bore is more than the internal diameter of right side, and each attachment screw 18 is extended through counter sink from left to right,
The bar portion of attachment screw 18 and the thinner right side clearance fit of counter sink, the head of attachment screw 18 is arranged in counter sink
In thicker left side.
13 middle part of butterfly plate frame offers the penetrating liquid drain hole 20 in left and right, and 14 left side of mobile butterfly plate is provided with step groove 21,
13 right side of butterfly plate frame is provided with ring-shaped step 22, and ring-shaped step 22, which extend into step groove 21 and horizontally slips with step groove 21, matches
It closes.
Driving device includes holder 23, turbine box 24 and handwheel 25, and holder 23 is arranged in the upper end of extension pipe 6, turbine
It is provided with Worm and worm-wheel gearing in case 24（It is not shown）, 2 upper end of valve rod passes through holder 23 and extend into turbine box 24 and snail
The worm gear of worm and gear mechanism is coaxially connected, and the worm screw of worm gear mechanism stretches out turbine box 24, and handwheel 25 is coaxial to be installed to snail
On bar.
23 bottom of holder is provided with the rubber protective cover 26 of lower end opening, and rubber protective cover 26 is in up-thin-low-thick cone
Structure, rubber protective cover 26 are sleeved on the outside on 6 top of extension pipe.
Monoblock type butterfly plate is designed to two parts by the present invention, when butterfly plate frame 13, second is that mobile butterfly plate 14.Butterfly plate frame 13 with
Valve rod 2 is connected with straight pin 16, and mobile butterfly plate 14 is connect with the interior hexagonal attachment screw 18 of butterfly plate frame 13, mobile butterfly plate 14 and butterfly
There are buffer gap 19 between grillage 13, mobile butterfly plate 14 is enable to be moved within the scope of small―gap suture.It is distributed and justifies in attachment screw 18
Middle interval position adds several compressed springs 17 for pre-tightening firm mobile butterfly plate 14.
The working condition parsing of the present invention：Analysis of the medium power to sealing function when butterfly plate seal assembly works, rotates hand
Wheel 25 is rotated by Worm and worm-wheel gearing band ovable valve stem 2 in turbine box 24, when valve rod 2 drives 13 closing movement of butterfly plate frame
When, mobile butterfly plate 14 follows butterfly plate frame 13 to rotate and moves closer to sealing ring 12, at this point, flow area reduces, media flow by
Resistance, left pressure increase, and medium is flowed to the left side of mobile butterfly plate 14 by the liquid drain hole 20 on butterfly plate frame 13 and pushes movement
At this moment the minute movement to the right of butterfly plate 14 closes the position of the central axis of mobile butterfly plate 14 and valve body 1 in place, medium is to moving
The pressure of dynamic butterfly plate 14 reaches peak, pushes the active force of mobile butterfly plate 14 to the right also to reach maximum, due to mobile butterfly plate
14 have certain amount of movement, therefore the pressure of medium can push mobile butterfly plate 14 to compress sealing ring 12, the bigger sealing effect of pressure
Fruit is better, to which the effect of the pressure by medium achievees the effect that self sealss.
The left side central portion of mobile butterfly plate 14 is opened up there are one step groove 21, and medium can pass through the liquid drain hole on butterfly plate frame 13
20 enter mobile butterfly plate 14 are pushed to move right in step groove 21；The restriction that is slidably matched of ring-shaped step 22 and step groove 21
Mobile butterfly plate 14 can only move in the axial direction, cannot radially move, and which ensures that mobile butterfly plates 14 and sealing
There is good sealing performance between circle 12.
The present embodiment is not to be made any form of restriction to shape, material, the structure etc. of the present invention, every according to this hair
Bright technical spirit belongs to the technology of the present invention side to any simple modification, equivalent change and modification made by above example
The protection domain of case.
Claims (5)
1. butterfly plate low temperature butterfly valve, including valve body, valve rod, butterfly plate seal assembly and driving device, valve body top are moved in a kind of self sealss
Portion and bottom are fixedly installed upper valve neck and lower valve neck respectively, and the center line of upper valve neck and lower valve neck overlaps and the center line passes through
The center of valve body, it is coaxial at the top of upper valve neck to be connected with extension pipe, valve rod sequentially pass through from top to bottom extension pipe, upper valve neck and under
Valve neck, lower valve neck bottom are provided with bottom cover and gasket, and upper valve neck is internally provided with the guide sleeve being sleeved on outside valve rod, extension pipe upper end
Airtight and watertight padding and gland component are provided between internal and valve rod outer wall, driving device is arranged at the top of extension pipe, drives
The power output end of dynamic device and the upper end of valve rod are sequentially connected, it is characterised in that：Butterfly plate seal assembly includes annular pressing plate, close
Seal, butterfly plate frame and mobile butterfly plate, valve body right output port inner wall offer annular mounting groove, and sealing ring is fixed to ring by annular pressing plate
In shape mounting groove, annular pressing plate is connected to valve body right part by hold-down bolt；
Butterfly plate frame and mobile butterfly plate are respectively positioned in valve body, and butterfly plate frame is fixedly connected by the straight pin being arranged along valve rod radial direction
On valve rod, correspondence offers several grooves between mobile butterfly plate left side, several grooves are along the circumferencial direction for moving butterfly plate
Be evenly arranged, compressed spring be installed in groove, the left end and right end of compressed spring respectively on the right side of butterfly plate frame with mobile butterfly plate
Top pressure between left side；It is connected by several attachment screws between butterfly plate and mobile butterfly plate, butterfly is moved on several attachment screws edge
The circumferencial direction of plate is evenly arranged, and attachment screw is is threadedly coupled with mobile butterfly plate, the bar portion of attachment screw with move butterfly plate it
Between for absent-mindedness connection；Under the action of compressed spring, the head of attachment screw and butterfly plate frame press fit, butterfly plate frame and mobile butterfly
There is buffer gap between plate；The outer circumference surface of mobile butterfly plate is left thick right thin conical structure, the excircle of mobile butterfly plate
Face crimps sealing cooperation with sealing ring.
2. butterfly plate low temperature butterfly valve is moved in a kind of self sealss according to claim 1, it is characterised in that：Attachment screw and butterfly plate
Frame absent-mindedness connection mode be：Butterfly plate frame offers several counter sinks, and the internal diameter of the left side of counter sink is more than right side
Internal diameter, each attachment screw is extended through counter sink from left to right, the bar portion of attachment screw and counter sink it is thinner
The head of right side clearance fit, attachment screw is arranged in the thicker left side of counter sink.
3. butterfly plate low temperature butterfly valve is moved in a kind of self sealss according to claim 1, it is characterised in that：It is opened up in the middle part of butterfly plate frame
There are the liquid drain hole that left and right is penetrating, mobile butterfly plate left side to be provided with step groove, ring-shaped step, annular table are provided on the right side of butterfly plate frame
Rank extend into step groove and horizontally slips cooperation with step groove.
4. butterfly plate low temperature butterfly valve is moved in a kind of self sealss according to claim 1, it is characterised in that：Driving device includes branch
Frame, turbine box and handwheel, holder, which is arranged in the upper end of extension pipe, turbine box, is provided with Worm and worm-wheel gearing, valve rod
Upper end pass through holder and extend into turbine box and worm gear mechanism worm gear it is coaxially connected, the worm screw of worm gear mechanism stretches out
Turbine box, handwheel is coaxial to be installed on worm screw.
5. butterfly plate low temperature butterfly valve is moved in a kind of self sealss according to claim 4, it is characterised in that：Frame bottom is provided with
The rubber protective cover of lower end opening, rubber protective cover are in up-thin-low-thick conical structure, and rubber protective cover is sleeved on lengthening tube top
The outside at end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810522534.9A CN108547956B (en) | 2018-05-28 | 2018-05-28 | Self-sealing movable butterfly plate low-temperature butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810522534.9A CN108547956B (en) | 2018-05-28 | 2018-05-28 | Self-sealing movable butterfly plate low-temperature butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108547956A true CN108547956A (en) | 2018-09-18 |
| CN108547956B CN108547956B (en) | 2023-11-21 |
Family
ID=63511337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810522534.9A Active CN108547956B (en) | 2018-05-28 | 2018-05-28 | Self-sealing movable butterfly plate low-temperature butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108547956B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4026514A (en) * | 1976-03-08 | 1977-05-31 | Sumner Joe D | Pressure enhanced butterfly valve |
| CN1605773A (en) * | 2004-11-16 | 2005-04-13 | 陈国顺 | Hard sealing two-way disc valve |
| ES1074118U (en) * | 2011-03-02 | 2011-03-23 | Angodos, S.L. | Butterfly valve |
| CN201925495U (en) * | 2011-03-04 | 2011-08-10 | 周振峰 | Double-eccentricity two-way metal hard seal butterfly valve |
| CN203374830U (en) * | 2013-07-15 | 2014-01-01 | 天津百利展发集团有限公司 | Automatic compensation butterfly valve |
| CN105465383A (en) * | 2016-01-08 | 2016-04-06 | 无锡科磊阀业有限公司 | Eccentric butterfly valve structure with self-compensating function |
| KR20180027089A (en) * | 2016-09-06 | 2018-03-14 | 성도밸브 (주) | Sealing apparatus for butterfly valve |
| CN208268435U (en) * | 2018-05-28 | 2018-12-21 | 开封瑞科阀门有限公司 | A kind of mobile butterfly plate low temperature butterfly valve of self-sealing |
-
2018
- 2018-05-28 CN CN201810522534.9A patent/CN108547956B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4026514A (en) * | 1976-03-08 | 1977-05-31 | Sumner Joe D | Pressure enhanced butterfly valve |
| CN1605773A (en) * | 2004-11-16 | 2005-04-13 | 陈国顺 | Hard sealing two-way disc valve |
| ES1074118U (en) * | 2011-03-02 | 2011-03-23 | Angodos, S.L. | Butterfly valve |
| CN201925495U (en) * | 2011-03-04 | 2011-08-10 | 周振峰 | Double-eccentricity two-way metal hard seal butterfly valve |
| CN203374830U (en) * | 2013-07-15 | 2014-01-01 | 天津百利展发集团有限公司 | Automatic compensation butterfly valve |
| CN105465383A (en) * | 2016-01-08 | 2016-04-06 | 无锡科磊阀业有限公司 | Eccentric butterfly valve structure with self-compensating function |
| KR20180027089A (en) * | 2016-09-06 | 2018-03-14 | 성도밸브 (주) | Sealing apparatus for butterfly valve |
| CN208268435U (en) * | 2018-05-28 | 2018-12-21 | 开封瑞科阀门有限公司 | A kind of mobile butterfly plate low temperature butterfly valve of self-sealing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108547956B (en) | 2023-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208268435U (en) | A kind of mobile butterfly plate low temperature butterfly valve of self-sealing | |
| CN107420573B (en) | High-temperature-resistant high-pressure-resistant bidirectional hard sealing ball valve with pretension compensation movable valve seat | |
| CN203421188U (en) | Worm drive lever-type butterfly valve | |
| CN108547956A (en) | A kind of self sealss movement butterfly plate low temperature butterfly valve | |
| CN210118471U (en) | Pressure balance type flip-chip bushing plug valve capable of adjusting sealing specific pressure on line | |
| CN112197016A (en) | High-adjustable-ratio double-butterfly-plate butterfly valve and operation method thereof | |
| CN102734473A (en) | Rotational-free self-sealing valve | |
| CN114776878B (en) | Stainless steel multifunctional front valve | |
| CN205824208U (en) | A kind of hermetically sealed butterfly valve of novel big orifice | |
| CN211423434U (en) | Cylindrical full-bore three-eccentric high-pressure wear-resistant ball valve | |
| CN215059631U (en) | Single-disk-root double-gate plate structure of gapless gate valve | |
| CN201258975Y (en) | Wedge-type single shutter gate valve | |
| CN209762276U (en) | High-performance three-eccentric bidirectional pure metal hard seal butterfly valve | |
| CN114658866A (en) | Durable fast-assembling butterfly valve and using method thereof | |
| CN208858951U (en) | A kind of high leakproofness butterfly valve | |
| CN210661421U (en) | Hard-sealing zero-leakage knife gate valve with valve cover | |
| CN202867900U (en) | Two-way omni-seal gate valve | |
| CN207080617U (en) | Multi-layer sealed flexible butterfly valve | |
| CN206988448U (en) | A kind of double spool linkage valve | |
| CN208268432U (en) | The mobile valve board assembly of self-sealing for valve | |
| CN210265909U (en) | Double-eccentric bidirectional sealing soft sealing butterfly valve | |
| CN206626192U (en) | A kind of gate valve | |
| CN203131074U (en) | Wedge gate valve | |
| CN220037498U (en) | Angle type Y-shaped blow-down valve | |
| CN221145340U (en) | Skeleton type pin-free butterfly valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |