CN207316088U - A kind of assisting in opening mechanism of flute check valve - Google Patents
A kind of assisting in opening mechanism of flute check valve Download PDFInfo
- Publication number
- CN207316088U CN207316088U CN201721254114.4U CN201721254114U CN207316088U CN 207316088 U CN207316088 U CN 207316088U CN 201721254114 U CN201721254114 U CN 201721254114U CN 207316088 U CN207316088 U CN 207316088U
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- Prior art keywords
- swing rod
- valve block
- opening
- assisting
- edge
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- Withdrawn - After Issue
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- 230000007246 mechanism Effects 0.000 title claims abstract description 22
- 238000012856 packing Methods 0.000 claims abstract description 40
- 238000009434 installation Methods 0.000 claims abstract description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000779 smoke Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model provides a kind of assisting in opening mechanism of flute check valve, belongs to pipeline configuration technical field.Valve block can not be opened after it solves the problems, such as long-time service in the prior art.The assisting in opening mechanism of this flute check valve, flute check valve includes housing and some valve blocks, there is ring packing gear edge in housing, valve block is hinged in housing, valve block edge can keep off edge with ring packing and fit or separate, housing has air intake and outlet air end, it is characterized in that, this assisting in opening mechanism includes swing rod, there is installation cavity inside valve block, swing rod swings and is arranged in installation cavity, valve block has opening one and opening two close to air intake side, opening one is equipped with a cushion, one end of swing rod is in contact with cushion, opening two is arranged on the edge of valve block, when one end that cushion deforms upon driving swing rod is swung, the other end of swing rod can be pierced by opening two and abut against ring packing gear edge.The utility model has the advantages that to strengthen valve block opening force.
Description
Technical field
The utility model belongs to pipeline configuration technical field, is related to a kind of assisting in opening mechanism of flute check valve.
Background technology
In the kitchen using the public gas flue in longitudinal direction, the oil smoke in gas flue is blowed back into kitchen in order to prevent, generally
Between integrated kitchen range or range hood and public gas flue check-valves can be set to be obstructed, the non-return used on the market at present
Valve, largely still has that oil smoke pours in down a chimney, phenomena such as not smooth of discharging fume can not eradicate.
The seal operation principle of existing check-valves：The valve block to seal in check-valves, is opened by row of wind, works as row
After wind-force disappears, closed in valve block under the action of gravity and return spring force.General principle is analyzed, it finds that this structure
In opening force and closing force be that conflicting a pair of of active force is difficult to reconcile.
Such as to ensure " air draft is smooth " as design direction, valve block weight or spring force cannot be excessive, and which limits pass
, easily because suction function in gas flue, valve block can not be sealed effectively, there is gap with the sealing surface of valve body, makes in the power of valve closing piece
Pour in down a chimney into oil smoke, and valve block closes valve noise and occurs repeatedly；Conversely, such as to ensure " leakproofness of check-valves " as design direction, just
The return spring force of valve block, and the sealing surface increase seal (such as silica type) between valve block and valve body need to be increased, shortcoming is also shown
And be clear to, bigger resistance need to be overcome by opening valve block, and the sealing surface of valve block causes that air draft is not smooth or valve block can not easily by grease adhesion
Open, air draft occur and blow not open, the phenomenon that oil smoke row does not go out.
At present, through retrieval, as Chinese patent literature discloses a kind of exhaust check valve of common flue【The patent No.：
CN200920014665.2；Authorization Notice No.：CN201443626U】.This exhaust check valve of common flue, it includes have housing
And wind shield, wherein：One end of housing is the smoke pipe connecting pin of connection smoke pipe, and the other end of housing is entering on wall
Wall installation end；Enclosure interior has the hollow lumen being connected of both ends open, and wind shield is arranged on the pipe inside wall installation end
On chamber path；The wind shield cooperation contact form mutual with housing contacts for line；To smoke pipe connecting pin and wall peace can be entered
Tube chamber between dress end is opened or the wind shield of closed procedure is two pieces.This exhaust check valve of common flue makes for a long time
Bonded with housing with wind shield is still resulted in, wind shield can not be opened in the case of equal wind-force.
The content of the invention
The purpose of this utility model is that there are the above problem for existing technology, it is proposed that a kind of flute check valve it is auxiliary
Opening mechanism is helped, technical problem to be solved in the utility model is how to strengthen valve block opening force.
The purpose of this utility model can be realized by following technical proposal：
A kind of assisting in opening mechanism of flute check valve, flute check valve include housing and some valve blocks, the housing
Interior to have ring packing gear edge, the valve block is hinged in housing, valve block edge can be kept off with ring packing along fitting or
Separate, the housing has air intake and outlet air end, it is characterised in that this assisting in opening mechanism includes swing rod, inside valve block
With installation cavity, swing rod swings and is arranged in installation cavity, and valve block has opening one and opening two, opening one close to air intake side
A cushion is equipped with, one end of swing rod is in contact with cushion, and opening two is arranged on the edge of valve block, and shape occurs for cushion
When one end of change driving swing rod is swung, the other end of swing rod can be pierced by opening two and abut against ring packing gear edge and make valve block and ring
Shape sealing gear is along separately.
The operation principle of the utility model is such：Wind-force enters housing from air intake, when cushion is in the drive of wind-force
Deformed upon under dynamic, the inside deformation of cushion, one end of swing rod can be swung to outlet air end, according to lever principle, swing rod it is another
End can be swung to inlet air extreme direction, when swing rod the other end through opening two be rocked to ring packing keep off along when, due to annular close
The presence on block edge, the other end of swing rod will be unable to continue to swing, and ring packing gear applies one instead along the other end to swing rod
To active force, at this time, the power at the both ends of swing rod is directed to outlet air end, the edge of valve block and ring packing gear along separating, at valve block
In open mode, air intake and outlet air end communicate；This traditional check-valves can only open valve block by the non-articulated end of valve block, by
Bonded in long-time using valve block edge and ring packing gear edge, opening force needs are very big, and low-grade wind-force can not be opened；This
Utility model utilizes lever principle, and swing rod keeps off ring packing along an active force is applied, kept off by ring packing along to valve block
Apply opposition, valve block edge and ring packing are kept off along separating, the utility model after prolonged use, remains able to
Open valve block.
The swing rod includes the body of rod and the shaft being vertically fixed on the body of rod, and reinforcing ring is further fixed on oscillating rod and is added
The strong axis of ring and the axis of fixing axle are located along the same line, and installation cavity is fixed with rotation seat one and rotation seat two, shaft
One end is rotatably arranged in rotation seat one, and the other end of shaft is rotatably arranged in rotation seat two, and the swing rod is close to opening
Two one end is outer end, and the one end of swing rod away from opening two is the inner, the distance of outer end to shaft be less than it is inner arrive shaft away from
From.
Using lever principle, one end of swing rod is power arm, and the other end of swing rod is resistance arm, by less wind-force just
The other end of swing rod can be swung, the power of the other end generation of swing rod is more than the opening force of swing rod one end, further according to interaction
The principle of power, the power that the other end of swing rod produces are equal to opposition of the ring packing gear along the other end generation to swing rod,
It is therefore seen that valve block opening force will greatly enhance, it is relatively easy to open valve block.
The valve block includes upper piece and lower piece, and upper piece is mutually fixed with lower piece, and upper piece is close to air intake.
Using above structure, make valve block that there is installation cavity, set swing rod to form swing space to swing.
It is in bowl-shape that fluted, described groove is opened up on the lower piece, and one end of swing rod can be rocked in groove,
The notch of the groove offers annular slot, and the edge of the cushion is equipped with the convex annular to match with annular slot
Bar, ring rib are in annular slot.
Using above structure, groove can be that one end of swing rod swings reserved swing space, can by way of clamping
Cushion is set to be fixed on lower piece.
The cushion has retainer ring close to the one side of swing rod, and one end of swing rod is threaded through in retainer ring, swing rod
It is connected between one end and groove by a pressure-bearing spring.
Using above structure, swing rod can be swung when cushion inwardly deforms upon, in the effect of no wind-force, held
The enough one end by swing rod of pressure energy reset.
The bottom portion of groove offers fixing groove, and one end of pressure-bearing spring is in fixing groove, pressure-bearing spring it is another
End and one end of swing rod against.
Using above structure, pressure-bearing spring can be fixed in a groove, prevent it from shifting.
The cushion includes middle part, annular groove and outside, and middle part is identical with external height, annular groove be in middle part with
Annular is additionally provided between outside, between annular groove and middle part and tilts edge.
The annular tilts along with middle part and forms the gradient, and the gradient close to outer end is more than close to the inner gradient.
Using above structure, according to the Impact direction of swing rod, ramp it is big partially due to stress is big, easily deform upon.
It is fixed with magnetic absorbing seat on the valve block, ring packing gear is along being above fixed with permanent magnet, permanent magnet and magnetic seat
It is raised with one to put corresponding, described outer end, swing rod and permanent magnet are on same straight line on horizontal plane.
Using above structure, in valve block fit-state, valve block and ring packing are kept off along jail by permanent magnet and magnetic absorbing seat
Jail touch, and is separated permanent magnet with magnetic absorbing seat by protrusion.So as to by valve block and ring packing gear along separating.
The valve block edge is additionally provided with gasket.
Using above structure, make the leakproofness of valve block and ring packing gear between better.
Compared with prior art, the utility model has the following advantages：
1st, the utility model makes valve block, valve block opening force will be greatly enhanced by setting cushion, swing rod.
2nd, the utility model is by setting magnetic absorbing seat and permanent magnet, make valve block closed mode will not be subject to negative pressure influence and
Produce noise.
3rd, the utility model is raised by setting, and valve block is being separated active force Relatively centralized in time, opens more square
Just.
Brief description of the drawings
Fig. 1 is the schematic perspective view of the utility model.
Fig. 2 is the valve block sectional view of the utility model.
Fig. 3 is the transverse cross-sectional view of the utility model.
Fig. 4 is enlarged drawing at A in Fig. 3.
Fig. 5 is the positive and negative schematic diagram of cushion in the utility model.
Fig. 6 is the partial schematic diagram after valve block removes swing rod and cushion.
Fig. 7 is the partial schematic diagram after upper piece is removed.
In figure, 1, housing；2nd, valve block；2a, upper piece；2b, lower piece；3rd, ring packing gear edge；4th, cushion；4a, in
Portion；4b, annular groove；4c, outside；4d, annular tilt edge；5th, swing rod；5a, the body of rod；5b, shaft；5c, protrusion；5d, reinforcing ring；
6th, installation cavity；7th, opening one；8th, opening two；9th, rotation seat one；10th, rotation seat two；11st, groove；12nd, annular slot；13rd, it is annular
Raised line；14th, retainer ring；15th, pressure-bearing spring；16th, fixing groove；17th, permanent magnet；18th, magnetic absorbing seat.
Embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of assisting in opening mechanism of flute check valve, flute check valve
Including housing 1 and two panels valve block 2, there is ring packing gear along 3 in housing 1, valve block 2 is hinged in housing 1,2 edge energy of valve block
Enough kept off with ring packing along 3 fits or separates, and housing 1 has air intake and outlet air end, this assisting in opening mechanism includes swing rod
5, valve block 2 includes upper piece 2a and lower piece 2b, and upper piece 2a is fixed with lower piece 2b phases, and upper piece 2a is close to air intake, valve
Piece 2 has installation cavity 6, and swing rod 5 swings and is arranged in installation cavity 6, and valve block 2 has opening 1 and opening close to air intake side
28, opening 1 is equipped with a cushion 4, and one end of swing rod 5 is in contact with cushion 4, and opening 28 is arranged on the side of valve block 2
At edge, when one end that cushion 4 deforms upon driving swing rod 5 is swung, the other end of swing rod 5 can be pierced by opening 28 and abut against ring
Shape sealing gear is along 3 and valve block 2 is separated with ring packing gear along 3, and swing rod 5 includes body of rod 5a and is vertically fixed on body of rod 5a
Shaft 5b, is further fixed on the axis of reinforcing ring 5d and reinforcing ring 5d on oscillating rod and the axis of fixing axle is located along the same line,
Installation cavity 6 is fixed with rotation seat 1 and rotation seat 2 10, and one end of shaft 5b is rotatably arranged in rotation seat 1, shaft 5b's
The other end is rotatably arranged in rotation seat 2 10, and swing rod 5 is outer end close to one end of opening 28, and swing rod 5 is away from opening 28
One end is the inner, and the distance of outer end to shaft 5b is less than the inner distance for arriving shaft 5b.
Using lever principle, one end of swing rod 5 is power arm, and the other end of swing rod 5 is resistance arm, passes through less wind-force
With regard to can swing the other end of swing rod 5, the power of the other end generation of swing rod 5 is more than the opening force of 5 one end of swing rod, further according to mutual
The principle of active force, the power that the other end of swing rod 5 produces are equal to the reverse of other end generation of the ring packing gear along 3 pairs of swing rods 5
Active force, it is therefore seen that 2 opening force of valve block will greatly enhance, it is relatively easy to open valve block 2.
As shown in fig. 7, open up fluted 11 on lower piece 2b, in bowl-shape, one end of swing rod 5 can be rocked to recessed groove 11
In groove 11, the notch of groove 11 offers annular slot 12, and the edge of cushion 4 is equipped with the annular to match with annular slot 12
Raised line 13, ring rib 13 are in annular slot 12.
Using above structure, groove 11 can be that one end of swing rod 5 swings reserved swing space, the energy by way of clamping
Cushion 4 is enough set to be fixed on lower piece 2b.
As shown in figure 5, cushion 4 has retainer ring 14 close to the one side of swing rod 5, one end of swing rod 5 is threaded through retainer ring
In 14, it is connected between one end of swing rod 5 and groove 11 by a pressure-bearing spring 15.
Using above structure, swing rod 5 can be swung when cushion 4 inwardly deforms upon, in the effect of no wind-force,
Pressure-bearing can reset one end of swing rod 5.
As shown in fig. 7,11 bottom of groove offers fixing groove 16, one end of pressure-bearing spring 15 is in fixing groove 16, holds
The other end of pressing spring 15 and one end of swing rod 5 against.
Using above structure, pressure-bearing spring 15 can be fixed in groove 11, prevent it from shifting.
As shown in figure 5, cushion 4 includes middle part 4a, annular groove 4b and outside 4c, middle part 4a and outside 4c is highly identical,
Annular groove 4b is between middle part 4a and outside 4c, and annular is additionally provided between annular groove 4b and middle part 4a and is tilted along 4d.
Annular tilts along 4d and middle part 4a and forms the gradient, and the gradient close to outer end is more than close to the inner gradient.
Using above structure, according to the Impact direction of swing rod 5, ramp it is big partially due to stress is big, easily deform upon.
As shown in figure 4, being fixed with magnetic absorbing seat 18 on valve block 2, ring packing gear is fixed with permanent magnet 17, permanent magnet along 3
17 is corresponding with 18 position of magnetic absorbing seat, and outer end has a protrusion 5c, and swing rod 5 and permanent magnet 17 are in same on horizontal plane
On straight line.
Using above structure, in 2 fit-state of valve block, by permanent magnet 17 and magnetic absorbing seat 18 by valve block 2 and ring packing
Gear is firmly stuck to along 3, is separated permanent magnet 17 with magnetic absorbing seat 18 by raised 5c.So as to keep off valve block 2 and ring packing along 3 points
Open.
2 edge of valve block is additionally provided with gasket.Using above structure, valve block 2 and ring packing is set to keep off along the leakproofness between 3
Better.Fixed column is fixed with housing 1, torsional spring is fixed in fixed column, one end of torsional spring and the valve block 2 in left side are fixed, torsional spring
The other end and the valve block 2 on right side fix.Just enough valve block 2 can be made to automatically reset more than.
The operation principle of the utility model is such：Wind-force enters housing 1 from air intake, when cushion 4 is in wind-force
Being deformed upon under driving, 4 inside deformation of cushion, one end of swing rod 5 can be swung to outlet air end, according to lever principle, swing rod 5
The other end can be swung to inlet air extreme direction, when the other end of swing rod 5 is rocked to ring packing through opening 28 to be kept off along 3, due to
Ring packing keeps off the presence along 3, and the other end of swing rod 5 will be unable to continue to swing, and ring packing keeps off the other end along 3 pairs of swing rods 5
Apply an opposition, at this time, the power at the both ends of swing rod 5 is directed to outlet air end, edge and the ring packing gear edge of valve block 2
3 separate, and valve block 2 is in open mode, and air intake and outlet air end communicate；This traditional check-valves can only pass through the non-hinge of valve block 2
Connecing to hold and open valve block 2, kept off along 3 and bonded with ring packing using 2 edge of valve block due to long-time, opening force needs are very big,
Low-grade wind-force can not be opened；The utility model utilizes lever principle, and swing rod 5, which keeps off along 3 ring packing, applies an active force, leads to
Cross ring packing gear and apply opposition along 3 pairs of valve blocks 2,2 edge of valve block is kept off along 3 with ring packing and is separated, this practicality is new
Type after prolonged use, remains able to open valve block 2.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although housing 1 is used more herein；Valve block 2；Upper piece 2a；Lower piece 2b；Ring packing is kept off along 3；Elasticity
Pad 4；Middle part 4a；Annular groove 4b；Exterior 4c；Annular is tilted along 4d；Swing rod 5；Body of rod 5a；Shaft 5b；Raised 5c；Reinforcing ring 5d；
Installation cavity 6；It is open 1；It is open 28；Rotation seat 1；Rotation seat 2 10；Groove 11；Annular slot 12；Ring rib 13；Gu
Determine ring 14；Pressure-bearing spring 15；Fixing groove 16；Permanent magnet 17；The grade term of magnetic absorbing seat 18, but be not precluded from using other terms can
Can property.The use of these terms is merely for the convenience of describing and explaining the nature of the invention；It is construed as appointing
A kind of what additional limitation is all contrary to the spirit of the present invention.
Claims (10)
1. a kind of assisting in opening mechanism of flute check valve, flute check valve includes housing and some valve blocks, in the housing
Edge is kept off with ring packing, the valve block is hinged in housing, and valve block edge can keep off edge with ring packing and fit or divide
Open, the housing has air intake and outlet air end, it is characterised in that this assisting in opening mechanism includes swing rod, has inside valve block
There is installation cavity, swing rod swings and is arranged in installation cavity, and valve block has opening one and opening two close to air intake side, is open on one
Equipped with a cushion, one end of swing rod is in contact with cushion, and opening two is arranged on the edge of valve block, and cushion deforms upon
When driving one end of swing rod to swing, the other end of swing rod can be pierced by opening two and abut against ring packing gear edge and make valve block and annular
Sealing gear is along separately.
2. the assisting in opening mechanism of flute check valve according to claim 1, it is characterised in that the valve block includes upper
Sheet body and lower piece, upper piece are mutually fixed with lower piece, and upper piece is close to air intake.
3. the assisting in opening mechanism of flute check valve according to claim 2, it is characterised in that the swing rod includes bar
Body and the shaft being vertically fixed on the body of rod, are further fixed on the axis of reinforcing ring and reinforcing ring and the axis of fixing axle on oscillating rod
It is located along the same line, lower piece has rotation seat one and rotation seat two, and one end of shaft is rotatably arranged in rotation seat one, turns
The other end of axis is rotatably arranged in rotation seat two, and the swing rod is outer end close to one end of opening two, and swing rod is away from opening
Two one end is the inner, and the distance of outer end to shaft is less than the inner distance for arriving shaft.
4. the assisting in opening mechanism of flute check valve according to claim 3, it is characterised in that opened on the lower piece
Equipped with groove, the groove is in bowl-shape, and one end of swing rod can be rocked in groove, and the notch of the groove offers ring
Shape card slot, the edge of the cushion are equipped with the ring rib to match with annular slot, and ring rib is in annular slot
In.
5. the assisting in opening mechanism of the flute check valve according to claim 1 or 2 or 3, it is characterised in that the elasticity
Pad has retainer ring close to the one side of swing rod, and one end of swing rod is threaded through in retainer ring, is passed through between one end of swing rod and groove
One pressure-bearing spring is connected.
6. the assisting in opening mechanism of flute check valve according to claim 5, it is characterised in that the bottom portion of groove is opened
Equipped with fixing groove, one end of pressure-bearing spring is in fixing groove, the other end of pressure-bearing spring and one end of swing rod against.
7. the assisting in opening mechanism of the flute check valve according to claim 1 or 2 or 3, it is characterised in that the elasticity
Pad includes middle part, annular groove and outside, and middle part is identical with external height, annular groove between middle part and outside, annular groove and
Annular is additionally provided between middle part and tilts edge.
8. the assisting in opening mechanism of flute check valve according to claim 7, it is characterised in that the annular tilts edge
The gradient is formed with middle part, the gradient close to outer end is more than close to the inner gradient.
9. the assisting in opening mechanism of flute check valve according to claim 3, it is characterised in that fixed on the valve block
There is magnetic absorbing seat, ring packing is kept off along permanent magnet is above fixed with, and permanent magnet is corresponding with magnetic absorbing seat position, and the outer end has one
Protrusion, swing rod and permanent magnet are on horizontal plane on same straight line.
10. the assisting in opening mechanism of the flute check valve according to claim 1 or 2 or 3, it is characterised in that the valve
Piece edge is additionally provided with gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721254114.4U CN207316088U (en) | 2017-09-27 | 2017-09-27 | A kind of assisting in opening mechanism of flute check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721254114.4U CN207316088U (en) | 2017-09-27 | 2017-09-27 | A kind of assisting in opening mechanism of flute check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207316088U true CN207316088U (en) | 2018-05-04 |
Family
ID=62428053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721254114.4U Withdrawn - After Issue CN207316088U (en) | 2017-09-27 | 2017-09-27 | A kind of assisting in opening mechanism of flute check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207316088U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631034A (en) * | 2017-09-27 | 2018-01-26 | 火星人厨具股份有限公司 | A kind of assisting in opening mechanism of flute check valve |
| CN110172764A (en) * | 2019-04-11 | 2019-08-27 | 湖北枫树科技有限公司 | A kind of spinning unit and application method of regenerated terylene yarn |
-
2017
- 2017-09-27 CN CN201721254114.4U patent/CN207316088U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631034A (en) * | 2017-09-27 | 2018-01-26 | 火星人厨具股份有限公司 | A kind of assisting in opening mechanism of flute check valve |
| CN107631034B (en) * | 2017-09-27 | 2024-05-17 | 火星人厨具股份有限公司 | Auxiliary opening mechanism of flue check valve |
| CN110172764A (en) * | 2019-04-11 | 2019-08-27 | 湖北枫树科技有限公司 | A kind of spinning unit and application method of regenerated terylene yarn |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180504 Effective date of abandoning: 20240517 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180504 Effective date of abandoning: 20240517 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |