CN105257895B - Butterfly valve and the injection apparatus using the butterfly valve - Google Patents
Butterfly valve and the injection apparatus using the butterfly valve Download PDFInfo
- Publication number
- CN105257895B CN105257895B CN201510653085.8A CN201510653085A CN105257895B CN 105257895 B CN105257895 B CN 105257895B CN 201510653085 A CN201510653085 A CN 201510653085A CN 105257895 B CN105257895 B CN 105257895B
- Authority
- CN
- China
- Prior art keywords
- piston
- cylinder
- butterfly valve
- piston cylinder
- limiting structure
- 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.)
- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1225—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston with a plurality of pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
-
- 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
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Fluid-Driven Valves (AREA)
- Lift Valve (AREA)
Abstract
Injection apparatus the present invention relates to butterfly valve and using the butterfly valve, butterfly valve, including actuator and valve plate, actuator includes piston cylinder and guiding movement is assemblied in the first piston in piston cylinder in left-right direction, the pivot center rotating shaft being connected with the valve plate vertical with left and right directions is rotatably equipped with piston cylinder, coaxial line is installed with gear in rotating shaft, the right-hand member of first piston is provided with and first rack of the meshed transmission gear to drive valve plate to open when first piston moves to right, the First piston bar that the left end that axis extends in left-right direction is passed by piston cylinder left side is installed with first piston, it is provided with First piston bar on the outside of the piston cylinder for limiting First piston bar towards the first position limiting structure for moving right the limit with the spacing cooperation of piston cylinder.Injection apparatus the invention provides a kind of controllable butterfly valve of valve plate open angle and using the butterfly valve.
Description
Technical field
Injection apparatus the present invention relates to butterfly valve and using the butterfly valve.
Background technology
Existing injection apparatus is as shown in Figure 1：Two parallel connections being connected including power part 14 and with power part 14 are set
The output branch road put, one of export are provided with filter 11, choke valve 12 and jet pump 13 on branch road, another output branch
Pressure gauge 10 and Pneumatic butterfly valve 9 are provided with road, Pneumatic butterfly valve includes actuator and valve plate, and injection apparatus also includes and actuator
Connected control gas circuit, control gas circuit include source of the gas 1, stop valve 2, reversal valve 4, pressure-reducing valve 5,6 gentle signal framing of choke valve
Device 8.During work, power part is the fluid that system is provided with pressure, and fluid largely flows through butterfly valve, and fraction flows through jet pump,
In order to ensure that jet pump is normal, effectively works, the fluid in branch road where butterfly valve must have certain pressure, therefore butterfly valve
Valve plate can not be opened completely when opening, but need to turn to certain angle, the fluid in branch road where such butterfly valve
Can just have pressure, i.e. pressure gauge has certain pressure reading, and pressure-reducing valve, choke valve, gas signal framing device are used to control butterfly valve
The angle of opening, adjust the angle that pressure-reducing valve and choke valve can be opened with regulating butterfly valve.Existing for existing this injection apparatus
Problem is：Butterfly valve itself open angle off one's feet, it is necessary to by pressure-reducing valve, choke valve, gas signal framing device etc.
The complicated control gas circuit of some row realizes the control of the open angle of butterfly valve, causes that the parts of whole injection apparatus are more, profile chi
Very little big, required installing space is greatly and cost of manufacture is higher, and gas signal framing device is accurate, complicated control component in addition, into
This is higher, and fault rate is high, and service life is shorter.
The content of the invention
It is an object of the invention to provide a kind of controllable butterfly valve of valve plate open angle；The present invention also aims to provide
A kind of injection apparatus using the butterfly valve.
In order to solve the above problems, the technical scheme of butterfly valve is in the present invention：
Butterfly valve, including actuator and valve plate, actuator includes piston cylinder and guiding movement is assemblied in piston in left-right direction
First piston in cylinder, be rotatably equipped with piston cylinder pivot center it is vertical with left and right directions be connected with the valve plate turn
Axle, coaxial line is installed with gear in rotating shaft, and the right-hand member of first piston is provided with the meshed transmission gear with first piston
The first rack for driving valve plate to open when moving to right, left end that axis extends in left-right direction is installed with first piston by the work
The First piston bar passed on the left of plug cylinder, it is provided with the outside of the piston cylinder for spacing with piston cylinder in First piston bar
Coordinate to limit First piston bar towards the first position limiting structure for moving right the limit.
First position limiting structure is nut position limiting structure.
The right-hand member that nut position limiting structure includes being sheathed in the First piston bar is used to realize and the spacing cooperation of piston cylinder
The first stop collar, nut position limiting structure also include spinning in the first adjusting nut in the First piston bar, first is spacing
Set is positioned at the right side of the first adjusting nut.
The cylinder body and be fixedly arranged on the first of cylinder body left end by screw that the piston cylinder extends in left-right direction including axis
End cap, first end cover be installed with extend into the cylinder body be used for it is the first of the spacing cooperation of first piston left end convex
Edge, adjusting gasket is provided between the first end cap and the cylinder body.
Also guiding movement is equipped with the second piston on the right side of rotating shaft, second piston left end in left-right direction in piston cylinder
It is provided with the meshed transmission gear to drive the second rack of valve plate opening when second piston moves to left, consolidates in second piston
Provided with the right-hand member that axis extends in left-right direction by the second piston bar that passes on the right side of piston rod, in the work in second piston bar
It is provided with the outside of plug cylinder for limiting second piston bar towards the second spacing knot for moving left the limit with the spacing cooperation of piston cylinder
Structure.
Piston cylinder is separated into left chamber, middle chamber and right chamber room, left chamber, middle chamber and right chamber by first, second piston
Gas port is provided with the chamber wall of room.
The technical scheme of injection apparatus is in the present invention：
Injection apparatus, including two output branch roads being arranged in parallel, one of export are provided with butterfly valve on branch road, in addition
Jet pump is provided with one output branch road, butterfly valve includes actuator and valve plate, and actuator is including piston cylinder and in left-right direction
Guiding movement is assemblied in the first piston in piston cylinder, be rotatably equipped with piston cylinder pivot center it is vertical with left and right directions with
The rotating shaft of valve plate connection, coaxial line is installed with gear in rotating shaft, and the right-hand member of first piston is provided with to be engaged with the gear
Transmission is installed with axis to drive the first rack of valve plate opening when first piston moves to right, on first piston and prolonged in left-right direction
The left end stretched is provided with First piston bar on the outside of the piston cylinder by the First piston bar that passes on the left of the piston cylinder
For limiting First piston bar towards the first position limiting structure for moving right the limit with the spacing cooperation of piston cylinder.
First position limiting structure is nut position limiting structure, and nut position limiting structure includes being sheathed in the First piston bar
Right-hand member be used to realize and also include spinning with the first stop collar of the spacing cooperation of piston cylinder, nut position limiting structure and lived in described first
The first adjusting nut on stopper rod, the first stop collar are located at the right side of the first adjusting nut.
The cylinder body and be fixedly arranged on the first of cylinder body left end by screw that the piston cylinder extends in left-right direction including axis
End cap, first end cover be installed with extend into the cylinder body be used for it is the first of the spacing cooperation of first piston left end convex
Edge, adjusting gasket is provided between the first end cap and the cylinder body.
Also guiding movement is equipped with the second piston on the right side of rotating shaft, second piston left end in left-right direction in piston cylinder
It is provided with the meshed transmission gear to drive the second rack of valve plate opening when second piston moves to left, consolidates in second piston
Provided with the right-hand member that axis extends in left-right direction by the second piston bar that passes on the right side of piston rod, in the work in second piston bar
It is provided with the outside of plug cylinder for limiting second piston bar towards the second spacing knot for moving left the limit with the spacing cooperation of piston cylinder
Piston cylinder is separated into left chamber, middle chamber and right chamber room, the chamber of left chamber, middle chamber and right chamber room by structure, first, second piston
Gas port is provided with locular wall.
Beneficial effects of the present invention are：First piston is towards when moving right, and the first rack and pinion engaged transmission is so that rotating shaft
Drive valve plate to open, and the limit that moves to right of first piston can be adjusted by setting the position of the first position limiting structure, so as to control
The open angle of valve plate, the control of valve plate open angle, the knot of whole butterfly valve are realized in of the invention by the first position limiting structure
Structure is simple, and valve plate open angle is also easily achieved control.
Brief description of the drawings
Fig. 1 is the structural representation of background of invention；
Fig. 2 is the structural representation of one embodiment of injection apparatus in the present invention；
Fig. 3 is the structural representation of butterfly valve in Fig. 2, while is also the structural representation of one embodiment of butterfly valve in the present invention
Figure；
The cooperation schematic diagram of first, second rack and pinion when Fig. 4 is a kind of open angle of valve plate in Fig. 3；
The cooperation schematic diagram of first, second rack and pinion when Fig. 5 is another open angle of valve plate in Fig. 3.
Embodiment
The implementation of injection apparatus is for example shown in Fig. 2 ~ 5：Injection apparatus includes being used for the power part 55 for being provided with pressure fluid,
Power part can be pump, and power part belongs to prior art its concrete structure and is no longer described in detail, and two are connected with power part
The output branch road being arranged in parallel, filter 52, choke valve 53 and jet pump 54 are provided with one of output branch road, in addition one
It is provided with pressure gauge 50 and butterfly valve 51 on individual output branch road, butterfly valve is the Pneumatic butterfly valve for including actuator and valve plate, injection apparatus
Also include the control gas circuit of control actuator action, control gas circuit includes source of the gas 46, stop valve 47, reversal valve 49, actuator bag
Include piston cylinder and guiding movement be assemblied in first piston 26 and second piston 31 in piston cylinder in left-right direction, on piston cylinder in
The pivot center rotating shaft being connected with valve plate vertical with left and right directions, rotating shaft are rotatably equipped between first piston, second piston
Upper to be installed with gear 28 by the coaxial line of flat key 29, the right-hand member of first piston 26 is provided with meshed transmission gear to be lived first
The first rack 41 for driving valve plate to open when plug moves to right, the left end of second piston 31 are provided with meshed transmission gear with first
When piston moves to left drive valve plate open the second rack 30, first, second piston by piston cylinder be separated into left chamber, middle chamber and
Right chamber room, gas port is provided with the chamber wall of left chamber, middle chamber and right chamber room, reversal valve is connected with each gas port, middle chamber
Gas port be located at the middle part of piston cylinder.The cylinder body 27 and be fixed on by screw 23 that piston cylinder extends in left-right direction including axis
The first end cap 25 and the second end cap 34 of cylinder body left and right ends, first end, which covers to be installed with to extend into cylinder body, to be used for and first
First convex edge of the spacing cooperation of piston left end, be installed with the second end cap extend into cylinder body be used for and second piston right-hand member limits
The second convex edge that position coordinates, is respectively arranged with the first adjusting gasket between the first end cap and cylinder body and between the second end cap and cylinder body
44 and second adjusting gasket 40.Left end that axis extends in left-right direction is installed with first piston by the left of first end cap
The First piston bar 21 passed, First piston bar coordinate with the first end cap pilot seal, in the outer of piston cylinder in First piston bar
Side is provided with for limiting First piston bar towards the first position limiting structure for moving right the limit, the first limit with the spacing cooperation of piston cylinder
Bit architecture is nut position limiting structure, and the right-hand member that nut position limiting structure includes being sheathed in First piston bar is used to realize and piston cylinder
First stop collar 21 of spacing cooperation, nut position limiting structure also include spinning in the first adjusting nut 19 in First piston bar,
First stop collar is located at the right side of the first adjusting nut, and the first adjusting nut has two.Axis is installed with second piston along a left side
The second piston bar 36 that the right-hand member of right direction extension is passed by the second end cap right side, second piston bar and the second end cap pilot seal
Coordinate, be provided with the outside of piston cylinder in second piston bar for the spacing cooperation of piston cylinder to limit the and piston rod towards a left side
Second position limiting structure of moving limit, the left end that the second position limiting structure includes being sheathed in second piston bar is used to realize and piston
Second stop collar 37 of the spacing cooperation of cylinder, the second position limiting structure also include spinning in the second adjusting nut in second piston bar
39, the second stop collar is located at the left side of the second adjusting nut, and the second adjusting nut has two.Figure middle term 24 represents packing ring；In figure
Item 43,42,32,33,45 and 35 represents sealing ring.
During work, the pressure flow body that power part provides largely flows through butterfly valve, fraction flow through filter, choke valve and
Jet pump, in order to ensure branch road where butterfly valve with certain pressure i.e. pressure gauge with certain reading, the valve plate of butterfly valve can not be complete
Complete to open, the opening degree control procedure of valve plate is to adjust the position of the first adjusting nut and the second adjusting nut as needed, so
Can adjustment first piston move to right the limit and second piston move to left the limit, by the compressed air that source of the gas provides through cut-off
Valve, reversal valve flow to the actuator of butterfly valve, if middle chamber be vented, left and right chamber air inlet, then gear band turn axle turn counterclockwise
Dynamic, valve plate is opened, and when the first stop collar right-hand member, the second stop collar left end top to piston cylinder, valve plate reaches maximum opening pole
Limit.When power part is stopped, it is necessary to when butterfly valve completely closes, reversal valve commutates, middle chamber air inlet, left and right chamber vent,
First piston is towards moving left, and second piston is towards moving right, so that rotating shaft drives valve plate to rotate clockwise, valve plate is closed, now
First convex edge can limit the limit that moves to left of first piston, and what the second convex edge can limit second piston moves to right the limit, passes through tune
Pad between whole first end cap, the second end cap and cylinder body can adjust the closed position of butterfly valve.
Without complicated control can realization to the controllable of butterfly valve opening in the present invention, butterfly valve and whole injection apparatus
It is simple in construction, without taking larger installing space, and without using accurate device, greatly reduce the cost of manufacture of injection apparatus
And maintenance cost.
In the other embodiments of this injection apparatus：The number of first, second adjusting nut can also be one, three or
Other numbers；Certain first, second stop collar can not also be set, and now directly can limit first using the first adjusting nut
Piston moves to right the limit, directly moves to left the limit using the second adjusting nut come limit second piston；Certain first position limiting structure
Nut position limiting structure is may not be, such as is pin position limiting structure, interval opens up in left-right direction in First piston bar
There are multiple pin holes, realize that the court of limitation first piston moves right the limit by inserting pin in corresponding pin hole；Work as butterfly
When the use environment fixation of valve is that the maximum opening limit of valve plate is fixed, the first position limiting structure, which can also be, is fixedly welded on first
Block on piston rod；Second piston, the second rack and second piston bar can not be set；First end cap, the second end cap and cylinder
Adjusting gasket between body can not also be set；Butterfly valve is not Pneumatic butterfly valve yet, and now first, second piston moves left and right not
Controlled by compressed air, the driving element of linearly operating can be exported using electric pushrod, cylinder etc. to drive first,
Two pistons move.
The implementation of butterfly valve is for example shown in Fig. 2 ~ 5：Described in the concrete structure of butterfly valve and above-mentioned each injection apparatus embodiment
Butterfly valve is identical, is not described in detail herein.
Claims (8)
1. butterfly valve, including actuator and valve plate, it is characterised in that：Actuator includes piston cylinder and guiding movement fills in left-right direction
Assigned in the first piston in piston cylinder, it is rotatably equipped with that pivot center is vertical with left and right directions to be connected with the valve plate on piston cylinder
The rotating shaft connect, coaxial line is installed with gear in rotating shaft, and the right-hand member of first piston is provided with the meshed transmission gear with
The first rack for driving valve plate to open when one piston moves to right, be installed with first piston left end that axis extends in left-right direction by
The First piston bar passed on the left of the piston cylinder, it is provided with First piston bar and is used for and piston on the outside of the piston cylinder
For the spacing cooperation of cylinder to limit First piston bar towards the first position limiting structure for moving right the limit, the piston cylinder includes axis along left and right
The cylinder body of direction extension and the first end cap that cylinder body left end is fixedly arranged on by screw, first end, which covers to be installed with, extend into the cylinder
The first convex edge being used for the spacing cooperation of first piston left end in body, is provided with tune between the first end cap and the cylinder body
Save pad.
2. butterfly valve according to claim 1, it is characterised in that：First position limiting structure is nut position limiting structure.
3. butterfly valve according to claim 2, it is characterised in that：Nut position limiting structure includes being sheathed on the First piston bar
On right-hand member be used to realize and also include spinning in described first with the first stop collar of the spacing cooperation of piston cylinder, nut position limiting structure
The first adjusting nut on piston rod, the first stop collar are located at the right side of the first adjusting nut.
4. according to the butterfly valve described in claim 1 ~ 3 any one, it is characterised in that：Also it is oriented to and moves in left-right direction in piston cylinder
The dynamic second piston being equipped with the right side of rotating shaft, second piston left end are provided with the meshed transmission gear to be lived second
Plug drives the second rack that valve plate is opened when moving to left, and right-hand member that axis extends in left-right direction is installed with second piston by piston
The second piston bar passed on the right side of bar, be provided with the outside of the piston cylinder in second piston bar for piston cylinder is spacing matches somebody with somebody
Close to limit second piston bar towards the second position limiting structure for moving left the limit.
5. butterfly valve according to claim 4, it is characterised in that：First, second piston by piston cylinder be separated into left chamber, in
Chamber and right chamber room, gas port is provided with the chamber wall of left chamber, middle chamber and right chamber room.
6. injection apparatus, including two output branch roads being arranged in parallel, butterfly valve is provided with one of output branch road, in addition one
Jet pump is provided with individual output branch road, butterfly valve includes actuator and valve plate, it is characterised in that：Actuator includes piston cylinder and edge
Left and right directions guiding movement is assemblied in the first piston in piston cylinder, and pivot center and left and right directions are rotatably equipped with piston cylinder
The vertical rotating shaft being connected with the valve plate, coaxial line is installed with gear in rotating shaft, the right-hand member of first piston be provided with it is described
Meshed transmission gear is installed with axis along a left side to drive the first rack of valve plate opening when first piston moves to right on first piston
The left end of right direction extension is by the First piston bar that passes on the left of the piston cylinder, in the outer of the piston cylinder in First piston bar
Side is provided with for limiting First piston bar towards the first position limiting structure for moving right the limit, the work with the spacing cooperation of piston cylinder
Plug cylinder includes the cylinder body that extends in left-right direction of axis and the first end cap of cylinder body left end is fixedly arranged on by screw, and first end covers
It is installed with the first convex edge being used for the spacing cooperation of first piston left end extending into the cylinder body, the first end cap and institute
State and be provided with adjusting gasket between cylinder body.
7. injection apparatus according to claim 6, it is characterised in that：First position limiting structure is nut position limiting structure,
The right-hand member that nut position limiting structure includes being sheathed in the First piston bar is used to realize the first limit with the spacing cooperation of piston cylinder
Position set, nut position limiting structure also include spinning in the first adjusting nut in the First piston bar, and the first stop collar is positioned at the
The right side of one adjusting nut.
8. the injection apparatus according to claim 6 or 7, it is characterised in that：Also guiding movement in left-right direction in piston cylinder
The second piston being equipped with the right side of rotating shaft, second piston left end are provided with the meshed transmission gear with second piston
The second rack for driving valve plate to open when moving to left, right-hand member that axis extends in left-right direction is installed with second piston by piston rod
The second piston bar that right side passes, be provided with the outside of the piston cylinder in second piston bar for and the spacing cooperation of piston cylinder
To limit second piston bar towards moving left the second position limiting structure of the limit, first, second piston by piston cylinder be separated into left chamber,
Middle chamber and right chamber room, gas port is provided with the chamber wall of left chamber, middle chamber and right chamber room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510653085.8A CN105257895B (en) | 2015-10-10 | 2015-10-10 | Butterfly valve and the injection apparatus using the butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510653085.8A CN105257895B (en) | 2015-10-10 | 2015-10-10 | Butterfly valve and the injection apparatus using the butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105257895A CN105257895A (en) | 2016-01-20 |
| CN105257895B true CN105257895B (en) | 2018-02-16 |
Family
ID=55097722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510653085.8A Expired - Fee Related CN105257895B (en) | 2015-10-10 | 2015-10-10 | Butterfly valve and the injection apparatus using the butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105257895B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202950B (en) * | 2021-04-07 | 2022-07-19 | 中国长江三峡集团有限公司 | High-flow linkage gate type reversing valve and control method |
| CN116906660B (en) * | 2023-08-10 | 2023-12-22 | 山西蚂蚁工业有限责任公司 | Pin-semicircular arc groove type heavy-load hydraulic driving head |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5325888A (en) * | 1993-04-30 | 1994-07-05 | Stary Gary M | Pipeline valve transmission apparatus |
| CN2711490Y (en) * | 2004-03-26 | 2005-07-20 | 沈阳恒屹实业有限公司 | Pneuamtic actuator for valve |
| CN201391672Y (en) * | 2009-03-26 | 2010-01-27 | 济南高新华能气动液压有限公司 | Return adjustable pneumatic butterfly valve actuator |
| CN201934764U (en) * | 2011-03-03 | 2011-08-17 | 浙江中德自控阀门有限公司 | Air-driving multistage actuating mechanism |
| CN202962118U (en) * | 2012-07-25 | 2013-06-05 | 中色科技股份有限公司 | Mixing tank control system of plate filter |
| CN203258159U (en) * | 2013-05-23 | 2013-10-30 | 浙江博恩自控阀门有限公司 | Sectional controllable pneumatic actuator |
| CN103410985A (en) * | 2013-07-16 | 2013-11-27 | 鞍山电磁阀有限责任公司 | Integrated pneumatic vent butterfly valve |
-
2015
- 2015-10-10 CN CN201510653085.8A patent/CN105257895B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5325888A (en) * | 1993-04-30 | 1994-07-05 | Stary Gary M | Pipeline valve transmission apparatus |
| CN2711490Y (en) * | 2004-03-26 | 2005-07-20 | 沈阳恒屹实业有限公司 | Pneuamtic actuator for valve |
| CN201391672Y (en) * | 2009-03-26 | 2010-01-27 | 济南高新华能气动液压有限公司 | Return adjustable pneumatic butterfly valve actuator |
| CN201934764U (en) * | 2011-03-03 | 2011-08-17 | 浙江中德自控阀门有限公司 | Air-driving multistage actuating mechanism |
| CN202962118U (en) * | 2012-07-25 | 2013-06-05 | 中色科技股份有限公司 | Mixing tank control system of plate filter |
| CN203258159U (en) * | 2013-05-23 | 2013-10-30 | 浙江博恩自控阀门有限公司 | Sectional controllable pneumatic actuator |
| CN103410985A (en) * | 2013-07-16 | 2013-11-27 | 鞍山电磁阀有限责任公司 | Integrated pneumatic vent butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105257895A (en) | 2016-01-20 |
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