CN206754470U - A kind of bellows control valve - Google Patents
A kind of bellows control valve Download PDFInfo
- Publication number
- CN206754470U CN206754470U CN201720508537.8U CN201720508537U CN206754470U CN 206754470 U CN206754470 U CN 206754470U CN 201720508537 U CN201720508537 U CN 201720508537U CN 206754470 U CN206754470 U CN 206754470U
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- capsule
- postive stop
- stop baffle
- room
- valve
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Abstract
The utility model provides a kind of bellows control valve, including valve body, capsule room, capsule and limiting component；Capsule room is fixed on the lateral surface of valve body, and is connected with the valve pocket in the valve body, and the outer end of the capsule room offers a through hole；Capsule is elastic sack body, and its opening is fixedly connected with capsule room, and the capsule is connected with through hole by the sealing of capsule room；The limiting component is fixed on the body wall, and is followed the expansion or shrinkage of the capsule to carry out shift in position positioned at valve pocket inside and the outside of the capsule, the limiting component, limited the swelling volume of the capsule；The capsule is expanded to seal with the valve pocket under the filling of fluid coordinates or is contracted under the discharge of fluid capsule room.Bellows control valve described in the utility model, alleviates valve quality, while is changed to the metal rigidity of conventional valves is friction sealed flexible frictionless contact and seals, greatly reduces the abrasion of valve body, improves the corrosion resistance of valve body, extend service life.
Description
Technical field
The utility model belongs to control valve technical field, more particularly, to a kind of bellows control valve.
Background technology
Conventional ball valve is in the course of the work, between valve element and valve body metal rigidity friction, abrasion it is larger, and when valve element with
When wearing to a certain extent between valve body, ball valve is scrapped, and can not repair or rehabilitation cost is higher.
The content of the invention
In view of this, the utility model is directed to a kind of bellows control valve, and the flexibility of valve body is connect without friction by capsule
Sealing is touched, the abrasion of valve body is greatly reduced, improves the decay resistance of valve element.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in：
A kind of bellows control valve, including valve body, capsule room, capsule and limiting component；
The capsule room is fixed on the lateral surface of the valve body, and is connected with the valve pocket in the valve body, the outer end of the capsule room
Offer a through hole；
The capsule is elastic sack body, and its opening is fixedly connected with the capsule room, and the capsule and the through hole are close by capsule room
Envelope connection；
The limiting component is fixed on the body wall, and positioned at valve pocket inside and the outside of the capsule, the limit
Position part follows the expansion or shrinkage of the capsule to carry out shift in position, limits the swelling volume of the capsule；
The capsule is expanded to seal with the valve pocket under the filling of fluid to be coordinated or is contracted to capsule under the discharge of fluid
Room.
Further, the limiting component is a spacing external capsule, and the spacing external capsule is set on the outer wall of the capsule, and with
The body wall is fixedly connected, and the shape of the spacing external capsule is engaged with the valve pocket, and under the drive of the capsule, expansion
Coordinate or be contracted to capsule room to being sealed with the valve pocket.
Further, the cyst wall of the spacing external capsule is flexible material.
Further, it is installed with a circle capsule room positioned at the outside of the capsule room and around the inner of capsule room contact valve body
Edge is connected, the capsule room connects edge by the capsule room and is fixedly connected with the valve body.
Further, the capsule room connection edge is fixed on the valve body by fixing bolt.
Further, it is installed with a circle external capsule around the outside for being open and being located at the spacing external capsule of the spacing external capsule
Connect edge, external capsule connection edge is stretched between the capsule room connection edge and valve body, and by capsule room connect edge with
Fixing bolt between the valve body is fixed.
Further, the spacing external capsule is made into by high-strength carbon fibre.
Further, in the state of the spacing external capsule coordinates with valve pocket sealing, excessively described valve pocket central axis
Vertical section cuts rectangular in cross-section obtained by the spacing external capsule.
Further, the capsule is made up of thermostable fluorine rubber.
Further, the valve pocket central axis intersects at a point with capsule room central axis.
Further, the vertical section of excessively described valve pocket central axis and capsule room central axis cuts section obtained by the capsule room
It is rectangular.
Further, the side of the valve body is provided with construction opening, and the capsule room passes through the construction opening and the valve
Chamber connects, and the outside of the construction opening and the outer wall intersection area of the valve body are set for fillet.
Further, the capsule room includes chamber body and end cap, and the end cap is fitted in the outer end of the chamber body, and by tight
Fixing bolt is fixedly connected.
Further, circle capsule connection edge is installed with around the outside for being open and being located at the capsule of the capsule, it is described
Capsule connection edge is stretched between outer end and the end cap of the chamber body, and is consolidated by the fastening bolt between the outer end of chamber body and end cap
It is fixed.
Further, the limiting component includes postive stop baffle and slew gear；
The postive stop baffle has a pair, is corresponded with the slew gear, this is oppositely arranged to postive stop baffle, its one end
Rotatably it is fixed on by slew gear on the body wall of capsule room side, this is to postive stop baffle respectively positioned at described
The front and rear sides of capsule room relative medium flow direction；
This is rotated to postive stop baffle when capsule expands against around the slew gear, until this is to postive stop baffle other end card
Position is in the side wall of the valve body offside, the now inwall screens at the edge to postive stop baffle and the valve pocket, and coordinate institute
State valve pocket inwall and form the spacing cavity of a capsule, the capsule seals in the capsule limit chamber body with the valve pocket to be coordinated；
This is rotated to postive stop baffle when capsule shrinks around the slew gear, until this bounces back to the capsule to postive stop baffle
Room.
Further, the shape of the postive stop baffle is engaged with the valve pocket shape.
Further, the slew gear includes gyroaxis and active slew gear, and a line of the postive stop baffle is consolidated
It is scheduled on the gyroaxis, the gyroaxis is rotatably fixed on the body wall by active slew gear, the master
Dynamic slew gear postive stop baffle described in automatic traction when the capsule shrinks is pressed close to the capsule room.
Further, the slew gear includes gyroaxis, and a line of the postive stop baffle is fixed on the gyroaxis
On, one end away from the gyroaxis is fixedly connected with the capsule.
Further, the limiting component also includes a pair of positioners, and the positioner is fixed on and the revolution
On the relative valve interior wall of mechanism.
Further, the length of the limiting block edges of boards be more than the valve body on install the postive stop baffle a side wall and
Height between its offside side wall.
Further, the postive stop baffle is provided with multiple gate hole.
Relative to prior art, bellows control valve described in the utility model has the advantage that：
(1) bellows control valve described in the utility model, valve quality is alleviated, while the metal rigidity of conventional valves is rubbed
Wipe sealing and be changed to flexible frictionless contact sealing, greatly reduce the abrasion of valve body, improve the corrosion resistance of valve body, extend
Service life.
Brief description of the drawings
Form a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new
The schematic description and description of type is used to explain the utility model, does not form to improper restriction of the present utility model.
In accompanying drawing：
Fig. 1 is the bellows control valve structural representation that the limiting component described in the utility model embodiment is spacing external capsule；
Fig. 2 is the capsule that limiting component described in the utility model embodiment is postive stop baffle, slew gear and positioner
Formula control valve structural representation；
Fig. 3 is that the postive stop baffle length described in the utility model embodiment controls valve arrangement to show more than the bellows of valve pocket height
It is intended to.
Description of reference numerals：
1- valve bodies；11- valve pockets；2- capsules room；21- through holes；22- capsules room connects edge；3- capsules；4- limiting components；4a- is spacing
External capsule；4b1- postive stop baffles；4b2- slew gears；4b3- positioners.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For to limitation of the present utility model.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined
Feature can express or implicitly include one or more this feature.In description of the present utility model, unless separately
It is described, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the utility model.
Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figures 1 to 3, the utility model includes valve body 1, capsule room 2, capsule 3 and limiting component 4；
Capsule room 2 is fixed on the lateral surface of valve body 1, and is connected with the valve pocket 11 in the valve body 1, and the outer end of the capsule room 2 is opened
Provided with a through hole 21；
Capsule 3 is elastic sack body, and its opening is fixedly connected with capsule room 2, and the capsule 3 is connected with through hole 21 by the sealing of capsule room 2；
Limiting component 4 is fixed in the side wall of valve body 1, and positioned at the inside of valve pocket 11 and the outside of capsule 3, the limiting component 4
Follow the expansion or shrinkage of capsule 3 to carry out shift in position, limit the swelling volume of capsule 3；
Capsule 3 is expanded to seal with valve pocket 11 under the filling of fluid coordinates or is contracted under the discharge of fluid capsule room 2.
Limiting component 4 is a spacing external capsule 4a, and the spacing external capsule 4a is set on the outer wall of capsule 3, and is consolidated with the side wall of valve body 1
Fixed connection, the shape of the spacing external capsule 4a are engaged with valve pocket 11, and under the drive of capsule 3, are expanded to and are matched somebody with somebody with the sealing of valve pocket 11
Close or be contracted to capsule room.
Spacing external capsule 4a cyst wall is flexible material.
The inner that valve body 1 is contacted positioned at the outside of capsule room 2 and around capsule room 2 is installed with circle capsule room connection edge 22, capsule
Room 2 connects edge 22 by capsule room and is fixedly connected with valve body 1.
Capsule room connection edge 22 is fixed on valve body 1 by fixing bolt.
Circle external capsule connection edge, external capsule are installed with around the spacing external capsule 4a outside for being open and being located at spacing external capsule 4a
Connection edge stretches between capsule room connection edge 22 and valve body 1, and connects the fixation spiral shell between edge 22 and valve body 1 by capsule room
Bolt is fixed.
Spacing external capsule 4a is made into by high-strength carbon fibre.
In the state of spacing external capsule 4a coordinates with the sealing of valve pocket 11, the vertical section section for crossing the central axis of valve pocket 11 is spacing outer
Rectangular in cross-section obtained by capsule 4a.
Capsule 3 is made up of thermostable fluorine rubber.
The central axis of valve pocket 11 intersects at a point with the central axis of capsule room 2.
The vertical section for crossing the central axis of valve pocket 11 and the central axis of capsule room 2 cuts the gained rectangular in cross-section of capsule room 2.
The side of valve body 1 is provided with construction opening, and capsule room 2 is connected by construction opening with valve pocket 11, the outside of construction opening
Set with the outer wall intersection area of valve body 1 for fillet.
Capsule room 2 includes chamber body and end cap, and end cap is fitted in the outer end of chamber body, and is fixedly connected by fastening bolt.
Circle capsule connection edge is installed with around the outside for being open and being located at capsule 3 of capsule 3, capsule connection edge stretches into chamber body
Between outer end and end cap, and fixed by the fastening bolt between the outer end of chamber body and end cap.
When limiting component 4 is spacing external capsule 4a, when fluid is gas, the workflow of the bellows control valve is：
The bellows control valve is connected in conveyance conduit by the flange connection at the both ends of valve body 1, extraneous gas circuit system
System is expanded by through hole 21 to the filling gas of capsule 3, capsule 3 in capsule room 2, is realized to the filling inside spacing external capsule 4a, spacing outer
Capsule 4a is expanded to maximum, while the inflated configuration of capsule 3 is defined, and now spacing external capsule 4a coordinates with the sealing of valve pocket 11, i.e.,
Complete the closing process of the bellows control valve；
Capsule 3 is outwardly deflated by through hole 21, and pressure reduces in capsule 3, and capsule and spacing external capsule are under pressure medium effect, body
Product is lasting to be reduced, and retraction gasbag chamber, bellows control valve is opened, and completes the opening procedure of bellows control valve.
Limiting component 4 includes postive stop baffle 4b1 and slew gear 4b2；
Postive stop baffle 4b1 has a pair, is corresponded with slew gear 4b2, this is oppositely arranged to postive stop baffle 4b1, one
End is rotatably fixed in the side wall of valve body 1 of the side of capsule room 2 by slew gear 4b2, and this distinguishes position to postive stop baffle 4b1
In the front and rear sides of the relative medium of capsule room 2 flow direction；
This is rotated to postive stop baffle 4b1 when capsule 3 expands against around slew gear 4b2, until this is to postive stop baffle 4b1's
Other end screens is in the side wall of the offside of valve body 1, the now inwall screens at the edge to postive stop baffle 4b1 and valve pocket 11, and
The inwall of valve pocket 11 is coordinated to form the spacing cavity of a capsule, capsule 3 seals in capsule limit chamber body with valve pocket 11 to be coordinated；
This is rotated to postive stop baffle 4b1 when capsule shrinks around slew gear 4b2, until this is bounced back to postive stop baffle 4b1
Capsule room 2.
Postive stop baffle 4b1 shape is engaged with the shape of valve pocket 11.
Slew gear 4b2 includes gyroaxis and active slew gear, and postive stop baffle 4b1 a line is fixed on gyroaxis
On, gyroaxis is rotatably fixed in the side wall of valve body 1 by active slew gear, and active slew gear is automatic when capsule 3 shrinks
Postive stop baffle 4b1 is driven to press close to capsule room 2.
Active slew gear is torsion spring or cylinder or hydraulic cylinder.
When fluid is gas, extraneous air-channel system is expanded by through hole 21 to the filling gas of capsule 3, capsule 3 in capsule room 2, real
Now to postive stop baffle 4b1 promotion, postive stop baffle rotates around slew gear 4b2, until this to postive stop baffle 4b1 screens in valve pocket
In 11, the now inwall screens at the edge to postive stop baffle 4b1 and valve pocket 11, and it is spacing to coordinate the inwall of valve pocket 11 to form a capsule
Cavity, capsule 3 is expanded to maximum and capsule outer wall is complete with the inwall of valve pocket 11 in capsule limit chamber body and fully contacts, and in valve pocket
Wall imposes sufficiently large normal pressure (pressure for being typically larger than medium), realizes that the sealing of capsule and valve pocket inwall coordinates, that is, completes
The closing process of the bellows control valve；
Capsule 3 is outwardly deflated by through hole 21, and capsule 3 shrinks in the case where medium acts on and natural resiliency acts on, and volume persistently contracts
It is small so that capsule 3 bounces back to capsule room 2, and capsule 3 no longer promotes postive stop baffle 4b1, effects of the postive stop baffle 4b1 in active slew gear
It is lower to press close to capsule room 2, or be close at the inner construction opening connected with valve pocket 11 in capsule room 2, or directly in rotation to capsule room 2, i.e.,
No longer stop the flowing of fluid in valve pocket 11, bellows control valve is opened, and completes the opening procedure of bellows control valve.
Slew gear 4b2 includes gyroaxis, and postive stop baffle 4b1 a line is fixed on gyroaxis, away from gyroaxis
One end is fixedly connected with capsule 3.
This gyroaxis connected mode is no longer the torsion of torsion spring when capsule 3 is outwardly deflated by through hole 21 and capsule 3 bounces back
Power driving postive stop baffle 4b1 presses close to capsule room 3, but directly drives postive stop baffle 4b1 to press close to capsule room 2 from the capsule 3 to bounce back, complete
Into the opening procedure of bellows control valve.
Limiting component 4 also includes a pair of positioner 4b3, and positioner 4b3 is fixed on the valve relative with slew gear 4b2
On the inwall of body 1.
Positioner 4b3 is realized to limiting block when capsule 3 expands against postive stop baffle 4b1 and rotated around slew gear 4b2
The restriction of plate 4b1 turned positions, general positioner 4b3 is when postive stop baffle 4b1 is turned to 11 central axis upright of valve pocket
With postive stop baffle 4b1 clamping matchings so that postive stop baffle maximum rotation angle is 90 degree, can also adjust positioner up and down
4b3 positions so that the suitably increase of postive stop baffle 4b1 maximum rotations angle reduces, and both plays certain resistance to fluid in valve pocket 11
Gear acts on, it is most important that serves restriction effect to the swelling volume and shape of capsule 3.
The length of postive stop baffle is more than the height between a side wall and its offside side wall that the postive stop baffle is installed on valve body
Degree, postive stop baffle are being rotated to being blocked before valve pocket central axis upright by the side wall of valve body offside, define postive stop baffle
Maximum rotation position, be the further restriction to features described above.
The shape of valve pocket 11 can have a variety of, common cross sections of valve pocket 11 more for rectangle, semicircle, parallelogram etc.
Kind shape, postive stop baffle 4b1 can be rotated in valve pocket 11 realizes that, to the spacing of capsule 3, the capsule valve is achievable.
When the cross section of valve pocket 11 is parallelogram, it is shaped as straight quadrangular shape, postive stop baffle 4b1 shapes and valve pocket 11
Cross section it is similar, and on postive stop baffle 4b1 with slew gear 4b2 centerline axis parallels and discontiguous a line to turning round
Mechanism 4b2 distance is more than medial surface relative with slew gear 4b2 in valve pocket to slew gear 4b2 distance.
Postive stop baffle 4b1 is provided with multiple gate hole, while postive stop baffle 4b1 is spacing to capsule 3, reduces postive stop baffle weight
Amount.
The utility model can equally utilize the disengaging of liquid especially water to realize the regulation to intracapsular hydraulic pressure, and then realize
The operation opened and be opened and closed to the bellows control valve.
The utility model causes the weight saving about 40% of valve, and production cost declines nearly 50%.
The utility model change conventional valves metal rigidity it is friction sealed for flexible frictionless contact seal, abrasion it is smaller,
Corrosion resistance is strong, service life length.
Flexible pocket of the present utility model is in closing process, and shape, volume and the surface of capsule 3 are all with the shape and body of valve pocket
Accumulate and change, reach completely enclosed state so that the sealing of valve pocket is more reliable, and has automatic compensation function.
The utility model is simple in construction, and part is few, in light weight, and then the production material of the bellows control valve is saved significantly
Save, and it is easy to maintenance, installation is easy.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (9)
- A kind of 1. bellows control valve, it is characterised in that：Including valve body (1), capsule room (2), capsule (3) and limiting component (4)；The capsule room (2) is fixed on the lateral surface of the valve body (1), and is connected with the valve pocket (11) in the valve body (1), the capsule The outer end of room (2) offers a through hole (21)；The capsule (3) is elastic sack body, and its opening is fixedly connected with the capsule room (2), and the capsule (3) and the through hole (21) are logical Cross capsule room (2) sealing connection；The limiting component (4) is fixed in the valve body (1) side wall, and positioned at valve pocket (11) is internal and the capsule (3) Outside, the limiting component (4) follow the expansion or shrinkage of the capsule (3) to carry out shift in position, limit the expander of the capsule (3) Product；The capsule (3) is expanded to seal with the valve pocket (11) under the filling of fluid to be coordinated or is contracted under the discharge of fluid Capsule room (2).
- 2. bellows control valve according to claim 1, it is characterised in that：The limiting component (4) is a spacing external capsule (4a), the spacing external capsule (4a) is set on the outer wall of the capsule (3), and is fixedly connected with the valve body (1) side wall, and this is spacing The shape of external capsule (4a) is engaged with the valve pocket (11), and under the drive of the capsule (3), is expanded to and the valve pocket (11) Sealing coordinates or is contracted to capsule room
- 3. bellows control valve according to claim 1, it is characterised in that：The limiting component (4) includes postive stop baffle (4b1) and slew gear (4b2)；The postive stop baffle (4b1) has a pair, is corresponded with the slew gear (4b2), and this is relative to postive stop baffle (4b1) Set, its one end is rotatably fixed on the valve body (1) side wall of capsule room (2) side by slew gear (4b2) respectively On, this is to postive stop baffle (4b1) respectively positioned at the front and rear sides of capsule room (2) relative medium flow direction；This is rotated to postive stop baffle (4b1) when capsule (3) expands against around the slew gear (4b2), until this is to limiting block The other end screens of plate (4b1) is in the side wall of the valve body (1) offside, the now edge and institute to postive stop baffle (4b1) The inwall screens of valve pocket (11) is stated, and coordinates the valve pocket (11) inwall to form the spacing cavity of a capsule, the capsule (3) is in the capsule Coordinate in limit chamber body with the valve pocket (11) sealing；This is rotated to postive stop baffle (4b1) when capsule shrinks around the slew gear (4b2), until this is to postive stop baffle (4b1) Bounce back to the capsule room (2).
- 4. bellows control valve according to claim 3, it is characterised in that：The shape of the postive stop baffle (4b1) with it is described Valve pocket (11) shape is engaged.
- 5. bellows control valve according to claim 3, it is characterised in that：The slew gear (4b2) include gyroaxis and Active slew gear, a line of the postive stop baffle (4b1) are fixed on the gyroaxis, and the gyroaxis is returned by active Rotation mechanism is rotatably fixed in the valve body (1) side wall, active slew gear automatic traction when the capsule (3) shrinks The postive stop baffle (4b1) is pressed close to the capsule room (2).
- 6. bellows control valve according to claim 3, it is characterised in that：The slew gear (4b2) includes gyroaxis, institute The a line for stating postive stop baffle (4b1) is fixed on the gyroaxis, and one end away from the gyroaxis is fixed with the capsule (3) Connection.
- 7. bellows control valve according to claim 3, it is characterised in that：The limiting component (4) also includes a pair of screens Device (4b3), the positioner (4b3) are fixed on the valve body (1) inwall relative with the slew gear (4b2).
- 8. bellows control valve according to claim 3, it is characterised in that：The length of the postive stop baffle (4b1) is more than institute State the height between a side wall and its offside side wall that the postive stop baffle is installed on valve body (1).
- 9. bellows control valve according to claim 3, it is characterised in that：The postive stop baffle (4b1) is provided with multiple grid Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720508537.8U CN206754470U (en) | 2017-05-09 | 2017-05-09 | A kind of bellows control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720508537.8U CN206754470U (en) | 2017-05-09 | 2017-05-09 | A kind of bellows control valve |
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| Publication Number | Publication Date |
|---|---|
| CN206754470U true CN206754470U (en) | 2017-12-15 |
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| CN201720508537.8U Active CN206754470U (en) | 2017-05-09 | 2017-05-09 | A kind of bellows control valve |
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| CN (1) | CN206754470U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931185A (en) * | 2017-05-09 | 2017-07-07 | 禹建朝 | A kind of bellows control valve |
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2017
- 2017-05-09 CN CN201720508537.8U patent/CN206754470U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931185A (en) * | 2017-05-09 | 2017-07-07 | 禹建朝 | A kind of bellows control valve |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200717 Address after: No.808, gate 13, yudeli, Heping Road, Nanshi street, Heping District, Tianjin Co-patentee after: Tianjin Fusen wear resistant material technology development Co., Ltd Patentee after: Yu Jianchao Address before: 300000, Heping District, Xingan Road, Tianjin, Delhi, Delhi 13 door Co-patentee before: TIANJIN TIANFENG SHUANGLIN ENERGY CONSERVATION AND ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Patentee before: Yu Jianchao |
|
| TR01 | Transfer of patent right |