CN209629575U - Dust catcher - Google Patents
Dust catcher Download PDFInfo
- Publication number
- CN209629575U CN209629575U CN201920146504.2U CN201920146504U CN209629575U CN 209629575 U CN209629575 U CN 209629575U CN 201920146504 U CN201920146504 U CN 201920146504U CN 209629575 U CN209629575 U CN 209629575U
- Authority
- CN
- China
- Prior art keywords
- dust
- separative unit
- air
- ducting ring
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000428 dust Substances 0.000 title claims abstract description 124
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 19
- 239000004744 fabric Substances 0.000 description 11
- 235000013312 flour Nutrition 0.000 description 5
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 3
- 244000046052 Phaseolus vulgaris Species 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 oatmeal Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Filters For Electric Vacuum Cleaners (AREA)
- Cyclones (AREA)
Abstract
The utility model provides a kind of dust catcher, including body and dust exhaust apparatus；The dust exhaust apparatus includes the dust barrel with accommodating space, entering-dust mouth and gas outlet, into dirt channel, first order separative unit and second level separative unit and cover board, and the cover board is equipped with the gas vent through thereon；The first order separative unit includes air-ducting ring tower cyclone separator, and the air-ducting ring is connected to and equipped with the opening being connected to the accommodating space with described into dirt channel；The second level separative unit is set to the downstream of the first order separative unit and is connected to be formed with the first order separative unit and connects along airflow direction；The second level separative unit includes bracket and multiple axis stream cylinder centrifugal devices for mutually forming parallel connection；The axis stream cylinder centrifugal device is connected to the outlet side of the tower cyclone separator；Compared with the relevant technologies, the dust catcher dust removal ability of the utility model is strong, long service life and cleaning frequency are small.
Description
Technical field
The utility model relates to a kind of sanitary tool field more particularly to a kind of dust catchers.
Background technique
Existing horizontal dust collector on the market, portable dual-purpose rod formula dust catcher, as long as using whirlwind cone separation dust
Dust catcher, be essentially all the form of level-one separation, (such as oatmeal, paper be broken, beans to the dust of bulky grain for this structure
Deng) good separation.But to dusts such as hair, ribbon, flour, separating effect is poor, especially twines when on whirlwind cone
When around ribbon, separation will carefully be lost such as the dust ability of similar flour, can only intercept filtering by filter cloth or extra large pa,
Filter cloth or extra large pa blocking are easily caused in this way, are caused the cracking forfeiture of product dust removal ability, are at this moment needed to clear up at once
Whirlwind cone and cleaning filter cloth or extra large pa, otherwise seriously cause motor that can not radiate and burn.
In addition, existing part horizontal dust collector, portable dual-purpose rod formula dust catcher, dust catcher also directly uses filter cloth
Or extra large pa directly intercepts filtering to dust, when dust of the sucking for similar flour, dust removal ability is easier to swash this mode
Acute decline causes product just dust suction or seriously not cause motor that can not radiate and burn.
And dust catcher in the related technology needs frequent cleaning whirlwind cone or cleaning filter cloth or extra large pa, causes to make
At the inconvenience in user's use, while being easy to cause motor that can not radiate and burn.
It solves the above problems therefore, it is necessary to provide the new dust catcher of one kind.
Utility model content
The utility model technical issues that need to address are to provide a kind of strong dust removal ability, long service life and cleaning frequency
Small dust catcher.
To achieve the above object, the utility model provides a kind of dust catcher, including body and the suction for being installed on the body
Dirt device；The dust exhaust apparatus includes the dust barrel with accommodating space, the entering-dust mouth for extending through the dust barrel and gas outlet, shape
Be connected in accommodating space described in Cheng Yu and with the entering-dust mouth into dirt channel, respectively be installed in the accommodating space first
Grade separative unit and second level separative unit and it is covered on the first order separative unit and the second level separative unit
Cover board, the cover board are equipped with the gas vent through thereon；Being axially perpendicular to for the first order separative unit is horizontally disposed, described
First order separative unit includes air-ducting ring and the tower cyclone separator that is set in the air-ducting ring, the air-ducting ring and institute
It states into the connection of dirt channel and the air-ducting ring is equipped with the opening being connected to the accommodating space, the tower cyclone separator is set
The grid gas vent being connected to the air-ducting ring, the extending direction and the airflow direction in the air-ducting ring of the grid gas vent
It is tangent；The axial direction of the second level separative unit is horizontally disposed, and the second level separative unit is set to described along airflow direction
The downstream of first order separative unit is simultaneously connected to be formed and connects with the first order separative unit；The second level separative unit includes
It is connected to the bracket of the air-ducting ring and is fixed on the multiple of the bracket and mutually form axis stream cylinder centrifugal device in parallel；Institute
Cover plate lid is stated set on the bracket and the axis stream cylinder centrifugal device, and the cover board, the bracket and the air-ducting ring are total
With gas chamber is surrounded, the gas chamber is connected to the outlet side of the tower cyclone separator；Each axis stream cylinder centrifugation dress
Set including shell cylindrical, extend partially into the exhaust pipe of the enclosure interior and be formed in the housing tip and with
The air inlet road being connected in the shell, the top of the exhaust pipe is connected to the cover board and is connected to the gas vent, institute
It states gas vent to be connected to the gas outlet, the bottom end of the shell is connected to the accommodating space, the exhaust pipe and the shell
The inner wall interval of body is arranged, and the air inlet road is connected to the gas chamber.
Preferably, described to be interconnected into dirt channel close to the tangent setting of one end and the air-ducting ring of the air-ducting ring and mutually
It is logical.
Preferably, the air inlet road is surrounded by multiple blades being obliquely installed, and to be entered by the air inlet road
The intracorporal gas gas of shell enters in tangential.
Preferably, the size of multiple axis stream cylinder centrifugal devices is all the same.
Preferably, the size of multiple axis stream cylinder centrifugal devices is different.
Preferably, the dust barrel includes bottom wall, the roof opposite with the bottom wall and connects the bottom wall and the top
The side wall of wall, the entering-dust mouth are arranged through the side wall, and the gas outlet is arranged through the roof.
Preferably, the first order separative unit is arranged in the accommodating space and is formed with the dust barrel and detachably connected
It connects；The second level separative unit is arranged in the accommodating space and is detachably connected with bracket formation.
Compared to the prior art, the dust catcher of the utility model by the first order separative unit to dust (such as oatmeal,
Paper is broken, beans, hair, ribbon, flour etc.) separation, while by increasing multiple groups second level separative unit to the dust of escape
It is separated, may be implemented to separate to the 99.9% of dust, high degree improves the pick-up performance of dust catcher；In addition,
The structure avoids the dust that escape is mainly intercepted by using filter cloth or extra large pa, on the one hand reduces to the clear of filter cloth or extra large pa
Frequency is washed, on the other hand making the motor of the dust catcher is not in that can not radiate and cause because of dust blocking filter cloth or Hai Pa
The phenomenon that burning effectively improves its service life.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the utility model dust catcher；
Fig. 2 is the schematic perspective view of the dust exhaust apparatus of the utility model dust catcher；
Fig. 3 is the stereochemical structure diagrammatic cross-section of the dust exhaust apparatus of the utility model dust catcher, wherein arrow indicates air-flow
Flow direction；
Fig. 4 is the structural schematic diagram of the first order separative unit of the utility model dust catcher；
Fig. 5 is the structural schematic diagram of the second level separative unit of the utility model dust catcher
Fig. 6 is the structural schematic diagram of the axis stream cylinder centrifugal device of the second level separative unit of the utility model dust catcher,
It cooperates with cover board；
Fig. 7 is the first order separative unit of the utility model dust catcher and the structural representation of second level separative unit assembly
Figure.
Specific embodiment
Below in conjunction with drawings and embodiments, the utility model is described in further detail.
Please join shown in Fig. 1-7 simultaneously, the utility model provides a kind of dust catcher, including body 100 and is installed on the machine
The dust exhaust apparatus 200 of body 100.
The dust exhaust apparatus 200 include dust barrel 1, entering-dust mouth 2, gas outlet 3, into dirt channel 4, gas vent 5, the first order separation
Unit 6, second level separative unit 7 and cover board 8.
The dust barrel 1 includes bottom wall 11, the roof 12 opposite with the bottom wall 11 and connect the bottom wall 11 and described
The side wall 13 of roof 12.The dust barrel 1 is in cylindrical type or pyramid type or square-column-shaped etc., and shape is unlimited.
The entering-dust mouth 2 and the gas outlet 3 are arranged through the dust barrel 1.In present embodiment, 2 He of entering-dust mouth
The position of the gas outlet 3 may be provided at any position of the dust barrel 1.In present embodiment, the entering-dust mouth 2 is through described
Side wall 13 is arranged, and the gas outlet 3 is arranged through the roof 12.
It is described to be formed in the accommodating space 10 into dirt channel 4 and be connected to the entering-dust mouth 2.
The gas vent 5 is arranged through the cover board 8.
The first order separative unit 6 and the second level separative unit 7 are installed in respectively in the accommodating space 10.
The cover board 8 is covered on the first order separative unit 6 and the second level separative unit 7 simultaneously.
Specifically, the first order separative unit 6 its be axially perpendicular to horizontally disposed, i.e., the described first order separative unit 6
Axial direction it is vertical with horizontal direction.
Specifically, the first order separative unit 6 is installed in the accommodating space 10 comprising air-ducting ring 61 and setting
Tower cyclone separator 62 in the air-ducting ring 61.The air-ducting ring 61 is in cylinder tubbiness, with described into dirt channel 4
Connection and the air-ducting ring 61, which are equipped with, is connected to opening 611 with the accommodating space 10；The tower cyclone separator 62 set with
The grid gas vent 621 that the air-ducting ring 61 is connected to.
In present embodiment, the extending direction of the grid gas vent 621 and the airflow direction phase in the air-ducting ring 61
It cuts, realizes the separation of cyclone centrifugal dust, avoid the speed for hindering and reducing dust gas stream and cause to reduce cyclonic separation dust
Ability, such structure is reliably collected and stored the dust of bulky grain and clast, while having relatively
The low risk carried secretly again.
More preferably, described one end and the tangent setting of the air-ducting ring 61 and phase into dirt channel 4 close to the air-ducting ring 61
It is intercommunicated, tangential connectivity structure is formed, realizes the separation of cyclone centrifugal dust.The tangential connectivity structure enters the air-flow with dust
Reach maximum tangential velocity and tangential separation power when the air-ducting ring 61, to improve the separation rate of dust.
The second level separative unit 7 is installed in the accommodating space 10, the axial water of the second level separative unit 7
Flat setting, i.e., the axial direction and horizontal direction parallel of the described second level separative unit 7.In present embodiment, the second level separation
Unit 7 is set to the downstream of the first order separative unit 6 along airflow direction and is connected to formation with the first order separative unit 6
Series connection, i.e., the two is forward connected to by air-flow.
Specifically, the second level separative unit 7 includes being connected to the bracket 71 of the air-ducting ring 61 and being fixed on described
The multiple of bracket 71 mutually form axis stream cylinder centrifugal device 72 in parallel.
The cover board 8 is covered on the bracket 71 and the axis stream cylinder centrifugal device 72, and the cover board 8, the branch
Frame 71 and the air-ducting ring 61 surround gas chamber 20 jointly, and the outlet side of the gas chamber 20 and the tower cyclone separator 62 connects
It is logical.Process after 62 dedusting of tower cyclone separator enters in the gas chamber 20.
The shell 721 of each axis stream cylinder centrifugal device 72 including hollow form cylindrical, extend partially into it is described
Exhaust pipe 722 inside shell 721 and be formed in 721 top of shell and with the air inlet that is connected in the shell 721
Road 723.The top of the exhaust pipe 722 is connected to the cover board 8 and is connected to the gas vent 5, the gas vent 5 with it is described
Gas outlet 3 is connected to；The bottom end of the shell 721 is connected to the accommodating space 10.The exhaust pipe 722 and the shell 721
Inner wall interval setting, formed air motion space, the air inlet road 723 is connected to the gas chamber 20.Above structure makes
Air-flow in gas chamber 20 can be entered by the air inlet road 723 in the axis stream cylinder centrifugal device 72, realize final dusting
Separation.
Specifically, the exhaust pipe 722 is that shell is long along the length of shell 721 axially extended in the shell 721
The 1/4~1/3 of degree, the factor of comprehensive air and dust density, the structure development length rise convenient for cleaned air by exhaust pipe
722 discharges.Extend too long, clean air-flow to be not easy to flow into exhaust pipe 722, extends too short, the non-maximum journey of dust in air-flow
Degree, which is separated, to be discharged by exhaust pipe 722, and separating effect is not good enough.
More preferably, the air inlet road 723 is surrounded by multiple blades 7231 being obliquely installed, and is made by the air inlet
The gas gas that road 723 enters in the shell 721 enters in tangential.The setting of the structure is so that the gas with dust enters the shell
Reach maximum tangential velocity and tangential separation power when in body 721, again to improve the secondary separation rate of dust, to reach more
Strong pick-up performance.
In present embodiment, the size of multiple axis stream cylinder centrifugal devices 72 can be all the same, can also part phase
Together, or it is different.Its arrangement mode is unlimited, if make the air inlet road 723 of each axis stream cylinder centrifugal device 72 with
The gas chamber 20 (i.e. with the tower cyclone separator 62) forms serial communication along air-flow.And multiple axis stream circles
Column centrifugal device 72 is each other parallel connection, i.e., the air-flow that tower cyclone separator 62 described in individual reception flows out simultaneously, effectively
Improve dust collection efficiency and intensity.
Cleaning in order to realize the first order separative unit 6 and the second level separative unit 7 is convenient, present embodiment
In, the first order separative unit 6 is arranged in the accommodating space 10 and is detachably connected with the dust barrel 1 formation；It is described
Second level separative unit 7, which is arranged in the accommodating space 10 and is formed with the dust barrel 1 and the bracket 71, detachably to be connected
It connects, cleaning easy to disassemble.
Join Fig. 3, Fig. 6 and Fig. 7, using arrows as air-flow, understands that pictute air-flow moves towards to facilitate, the utility model
The working principle of dust catcher is specific as follows:
Along the downstream that air-flow trend is located at the first order separative unit 6 include it is multiple in parallel by any irregular or
The axis stream cylinder centrifugal device 72 that the size of regular fashion arrangement is identical or size is different, multiple axis stream cylinder centrifugal devices 72
Form second level separative unit.The first order separative unit 6 is with second level separative unit 7 from two in terms of the route of the flowing of air-flow
Person forms series connection, so that the dust catcher 100 of the utility model has higher separative efficiency, dust separative efficiency reaches 99.9%
More than.And the presence of first order separative unit 6 and second level separative unit 7 that two are cascaded improves dust catcher 100
Dust suction performance, and the changes in flow rate of the gas of the second level separative unit 7 in downstream is almost seldom, will not influence unit holding
The ability of its separative efficiency.
So-called " separative efficiency " refers to first order separative unit 6 and second level separative unit 7 by the particle of entrainment from gas
The ability separated in stream.
So-called " separation of cyclone centrifugal dust " is referred to when the gas with dust is along the tangential of cylinder (such as air-ducting ring 61)
Into cylinder internal operation when, gas makes rotating motion in cylinder, the big dust of entrained particles or sundries or density
Big air stream, runs on the outside, and in the center close to cylinder, it is small cleaned air air-flow (the interior whirlpool of density
Revolve exhaust stream).When gas constantly pours in, gas is forced to run along cylinder to bottom, air-flow (outer vortex centrifugal inlet air flow)
It runs down and enters in dust barrel, and clean air-flow (inside vortex exhaust stream) is drained upwards.
62 shape of tower cyclone separator of first order separative unit 6 is substantially cylindrical or close to circular ellipse
Shape, the outermost of tower cyclone separator 62 are cylindrical or close to circular air-ducting ring 61, entrained dirt and particulate matters
Air-flow z, the flowing between tower cyclone separator 62 and air-ducting ring 61, be close to air-ducting ring 61 do go in ring centrifugation fortune
Dynamic, substantially clean air-flow y, the outer rim against grid gas vent 621 moves in a circle, and gradually passes through grid gas vent 621,
It is flowed away to second level separative unit 7, flows into gas chamber 20.
Wherein, entering-dust mouth 2 can be set into different shapes, such as round, square and other), connect with air-ducting ring 61
What is connect forms tangential inlet structure into dirt channel 4, and the dust gas with dust is made to obtain maximum tangential velocity and tangential separation
Power.It is moved in a circle by cutting air-ducting ring 61 into dirt channel 4, to obtain the tangential separation power to flare.Band dust and particle
The air-flow z of object is close to air-ducting ring 61 and does belt centrifugal movement, and by opening 611, dust and particulate matter are drained into dust barrel 1
In.
Substantially clean air-flow y moves in a circle along the outer rim of the grid gas vent 621 of first order separative unit 6, and
Gradually pass through grid gas vent 621.
Gas enters second level separative unit 7 at this time, and air-flow y enters shell 721 from air inlet road 723 through the gas chamber 20
It moves downwards, air inlet road 723 and shell 7212 are tangent, circle of the air-flow y between shell 721 and exhaust pipe 722
Channel moves in a circle, and at this moment air-flow y goes out two bursts of air streams by centrifugal force separate again, that is, in the air-flow to move in a circle, most
Outer layer is the big gas with particulate matter of density, and internal layer is the small clean gas of density, the air-flow y of the big entrained dirt of density by
Under the effect of gas continuous, continue to move to the bottom end of shell 721, dust, which is brought into, to be discharged into dust barrel 1, clean sky
Air-flow x is then moved to the top orientation of shell 721 since density is small, is discharged from exhaust pipe 722.
Second level separative unit 7 can be set into the in different size or the same of size, and can by any irregular or
The combination of person's regular fashion arrangement, mainly arranges according to the space size of dust barrel 1, quantity is unlimited.The ash separated
Dirt is drained into dust barrel 1.
Compared to the prior art, the dust catcher of the utility model by the first order separative unit to dust (such as oatmeal,
Paper is broken, beans, hair, ribbon, flour etc.) separation, while by increasing multiple groups second level separative unit to the dust of escape
It is separated, may be implemented to separate to the 99.9% of dust, high degree improves the pick-up performance of dust catcher；In addition,
The structure avoids the dust that escape is mainly intercepted by using filter cloth or extra large pa, on the one hand reduces to the clear of filter cloth or extra large pa
Frequency is washed, on the other hand making the motor of the dust catcher is not in that can not radiate and cause because of dust blocking filter cloth or Hai Pa
The phenomenon that burning effectively improves its service life.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other relevant technical fields, are also included in the patent protection scope of the utility model.
Claims (7)
1. a kind of dust catcher, including body and the dust exhaust apparatus for being installed on the body, which is characterized in that the dust exhaust apparatus packet
It includes the dust barrel with accommodating space, the entering-dust mouth for extending through the dust barrel and gas outlet, be formed in the accommodating space simultaneously
Be connected to the entering-dust mouth into dirt channel, be installed in first order separative unit and the second fraction in the accommodating space respectively
From unit and it is covered on the cover board of the first order separative unit and the second level separative unit, the cover board, which is equipped with, to be run through
Gas vent thereon；
Being axially perpendicular to for the first order separative unit is horizontally disposed, and the first order separative unit includes air-ducting ring and setting
In the tower cyclone separator in the air-ducting ring, the air-ducting ring is connected to and the air-ducting ring is equipped with described into dirt channel
The opening being connected to the accommodating space, the tower cyclone separator set the grid gas vent being connected to the air-ducting ring,
The extending direction and the airflow direction in the air-ducting ring of the grid gas vent are tangent；
The axial direction of the second level separative unit is horizontally disposed, and the second level separative unit is set to described the along airflow direction
The downstream of level-one separative unit is simultaneously connected to be formed and connects with the first order separative unit；The second level separative unit includes supporting
It is connected to the bracket of the air-ducting ring and is fixed on the multiple of the bracket and mutually form axis stream cylinder centrifugal device in parallel；It is described
Cover plate lid is set to the bracket and the axis stream cylinder centrifugal device, and the cover board, the bracket and the air-ducting ring are common
Gas chamber is surrounded, the gas chamber is connected to the outlet side of the tower cyclone separator；Each axis stream cylinder centrifugal device
Including shell cylindrical, extend partially into the exhaust pipe of the enclosure interior and be formed in the housing tip and with institute
The air inlet road being connected in shell is stated, the top of the exhaust pipe is connected to the cover board and is connected to the gas vent, described
Gas vent is connected to the gas outlet, and the bottom end of the shell is connected to the accommodating space, the exhaust pipe and the shell
Inner wall interval setting, the air inlet road is connected to the gas chamber.
2. dust catcher according to claim 1, which is characterized in that it is described into dirt channel close to the air-ducting ring one end with
The air-ducting ring is tangent to be arranged and is interconnected.
3. dust catcher according to claim 1, which is characterized in that enclosed by multiple blades being obliquely installed in the air inlet road
At, and to be entered by the air inlet road the intracorporal gas gas of the shell in tangential entrance.
4. dust catcher according to claim 3, which is characterized in that the size of multiple axis stream cylinder centrifugal devices is homogeneous
Together.
5. dust catcher according to claim 3, which is characterized in that the size phase of multiple axis stream cylinder centrifugal devices
It is different.
6. dust catcher according to claim 1, which is characterized in that the dust barrel includes bottom wall, opposite with the bottom wall
The side wall of roof and the connection bottom wall and the roof, the entering-dust mouth are arranged through the side wall, and the gas outlet is passed through
Wear the roof setting.
7. dust catcher according to claim 1, which is characterized in that it is empty that the first order separative unit is arranged in the receiving
In and with the dust barrel formation be detachably connected；The second level separative unit be arranged in the accommodating space and with it is described
Bracket formation is detachably connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920146504.2U CN209629575U (en) | 2019-01-27 | 2019-01-27 | Dust catcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920146504.2U CN209629575U (en) | 2019-01-27 | 2019-01-27 | Dust catcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209629575U true CN209629575U (en) | 2019-11-15 |
Family
ID=68479732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920146504.2U Expired - Fee Related CN209629575U (en) | 2019-01-27 | 2019-01-27 | Dust catcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209629575U (en) |
-
2019
- 2019-01-27 CN CN201920146504.2U patent/CN209629575U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191115 |