CN209173467U - Pulp of lithium ion battery sieving equipment - Google Patents
Pulp of lithium ion battery sieving equipment Download PDFInfo
- Publication number
- CN209173467U CN209173467U CN201821873989.7U CN201821873989U CN209173467U CN 209173467 U CN209173467 U CN 209173467U CN 201821873989 U CN201821873989 U CN 201821873989U CN 209173467 U CN209173467 U CN 209173467U
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- Prior art keywords
- lithium ion
- chamber
- ion battery
- pulp
- stir chamber
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Abstract
The utility model discloses a kind of pulp of lithium ion battery sieving equipments, including cabinet, there is a stir chamber in the cabinet, stir chamber is built-in with slurry stirring device, feed inlet is offered at the top of cabinet to be connected to outside cabinet and stir chamber, sieve structure was also equipped in feed inlet, cross the sieve plate excessively that sieve structure offers several sieve pores with one, it is characterized in that, the crusher chamber of stir chamber side is also set in cabinet with one, cross that sieve plate is tilting and lower end extends to broken cavity direction, the upper end side wall of crusher chamber offers horizontal through slot, through slot is connected to crusher chamber and crosses sieve plate, crusher chamber is built-in with crushing device, crusher chamber lower end side is also provided with the port being connected with stir chamber bottom.After the utility model is crushed agglomeration by the crushing device in crusher chamber, then by broken agglomeration importing stir chamber, realize the raising to the raw material availability of pulp of lithium ion battery.
Description
Technical field
The utility model belongs to lithium battery production equipment technical field, is sieved in particular to a kind of pulp of lithium ion battery
Device.
Background technique
Lithium ion battery: being a kind of secondary cell (rechargeable battery), it relies primarily on lithium ion between a positive electrode and a negative electrode
Movement carrys out work.In charge and discharge process, Li+ insertion and deintercalation back and forth between two electrodes: when charging, Li+ is de- from anode
It is embedding, it is embedded in cathode by electrolyte, cathode is in lithium-rich state；In lithium ion battery during production, usually to carry out
Slurry coating, before the process, needs to be sieved to slurry, at present in the lab to lithium cell cathode material coating
In the process, have the characteristics that particle is smaller, micro mist is more, binder (such as CMC) glue has coated cathode in whipping process
Micro mist, result in the reunion of cathode micro mist, and more stir, reunion is more difficult to open, and occurs inside the particle reunited or dry powder
The phenomenon that graphite, outside is coated by glue.
Chinese patent CN207221417U provides a kind of pulp of lithium ion battery sieving equipment, including cabinet, slurry tank,
Station, sieve and vacuum plant；The cabinet has roof and multiple side walls, and it is empty that the roof and multiple side walls surround receiving
Between, the roof offers perforative feed opening；The slurry tank is contained in the accommodating space；The station is set to
On the roof, the station offers holding hole, and the holding hole is directed at the feed opening；The sieve is fastened in described
In holding hole；The vacuum plant is connected to the accommodating space of the cabinet, and the vacuum plant extracts in the accommodating space
Air.The pulp of lithium ion battery sieving equipment that the patent provides, screening efficiency are high, it is therefore prevented that pulp of lithium ion battery is exposed to
In air, the chemical property for improving slurry is played, also, structure is simple, is easily achieved.
Above-mentioned apparatus when in use, although can prevent air from entering cavity, but there is problems in that lithium ion battery
Negative electrode slurry is usually solidliquid mixture, this makes negative electrode slurry it is easy to appear caking phenomenon, and the filter screen of above-mentioned apparatus
The pulp of lithium ion battery of smaller size smaller can only be filled into accommodating space, and none is fine to the biggish agglomeration of volume
Processing method, which results in the raw material availability to pulp of lithium ion battery is not high.
Therefore, how can provide that a kind of structure is simple, effectively for can not be negative by crossing the lithium ion battery of sieve plate
The agglomeration part of pole slurry promotes the raw material benefit to pulp of lithium ion battery without pre-processing to pulp of lithium ion battery
With rate and the pulp of lithium ion battery sieving equipment of screening efficiency, becoming those skilled in the art has technology to be solved to ask
Topic.
Utility model content
In view of the above shortcomings of the prior art, the technical problem to be solved by the utility model is to how to provide a kind of knot
Structure is simple, and being effectively directed to can not be by the agglomeration part of the lithium ion battery anode slurry of sieve plate excessively, without to lithium ion battery
Slurry is pre-processed, and is promoted to the raw material availability of pulp of lithium ion battery and the pulp of lithium ion battery mistake of screening efficiency
Screen device.
In order to solve the above-mentioned technical problem, the utility model uses the following technical solution:
A kind of pulp of lithium ion battery sieving equipment, including cabinet, the cabinet is interior to have a stir chamber, the stirring
It is intracavitary to be equipped with slurry stirring device, feed inlet is offered at the top of the cabinet to be connected to outside the cabinet and the stir chamber,
Sieve structure was also equipped in the feed inlet, the sieve structure of crossing has the sieve plate of crossing for offering several sieve pores, special
Sign is, is also set to the crusher chamber of the stir chamber side in the cabinet with one, described to cross that sieve plate is tilting and lower end
Extend to the broken cavity direction, the upper surface for crossing sieve plate forms the agglomeration rolling path rolled for agglomeration, the sieving
Towards the stir chamber, the upper end of the crusher chamber is connected to the agglomeration rolling path for crossing sieve plate, described for the lower surface of plate
Crusher chamber is built-in with crushing device, and crusher chamber lower end side is also provided with the port being connected with the stir chamber bottom.
In this way, screening is filtered to lithium ion battery anode slurry by using sieve structure is crossed, it is enabled to pass through sieve plate
The lithium ion battery anode slurry of sieve pore enter stir chamber and be stirred, meanwhile, it is tilting cross sieve plate will be not over sieve pore
Agglomeration introduce crusher chamber in, after be crushed by the crushing device in crusher chamber to agglomeration, then by it is broken agglomerate lead
Enter in stir chamber, realizes the raising to the raw material availability of pulp of lithium ion battery.
Further, the sieve structure of crossing further includes being set to the crusher chamber and the mistake by axis swing of vertical direction
The charging baffle of sieve plate joining place, the upper end of the charging baffle and the inner wall of the cabinet are hinged, and the charging baffle is being put
It moves when influencing state to no external force, lower end and the agglomeration rolling path are contacted to close the through slot.
In this way, make cannot be by the agglomeration of sieve pore when retaining excessive on crossing sieve plate, the active force in gravity that agglomerates is pushed open
Baffle is fed, to slide to crusher chamber, and the device that is broken is smashed.
Further, the upper surface of the upper end of sieve plate is crossed described in the lower port face of the feed inlet.
In this way, first falling on tilting sieve plate upper end excessively, then when pulp of lithium ion battery enters mixing plant from feed inlet
One is done under gravity along the inclined-plane rolling process for crossing sieve plate, is enabled directly sliding by the pulp of lithium ion battery of sieve pore
It drops down onto stir chamber, while cannot be rolled by the pulp of lithium ion battery of sieve pore to sieve plate lower end excessively to contact charging baffle,
When constant weight cannot be run up at charging baffle by the pulp of lithium ion battery of sieve pore, will be pushed in gravity
It drives material baffle into, and slides to crusher chamber.
Further, the crushing device includes the telescopic rod being vertically arranged, the upper end of the telescopic rod and described broken
Top of chamber connection, the lower end of the telescopic rod are equipped with quartering hammer, are provided with side and the crusher chamber below the quartering hammer
Inner wall connection filter screen, the lower section of the filter screen is tilting a guide plate, and the lower end of the guide plate extend to it is described logical
Mouthful.
In this way, agglomeration slides on the filter screen to crusher chamber from through slot, is moved up and down by telescopic rod and drive quartering hammer
To on filter screen agglomeration carry out break process, wait agglomerate be broken beat it is broken after, be filtered by filter screen, then by mistake
The slurries of filter are poured into stir chamber across port by guide plate and are stirred, and the broken and filtering to agglomeration further improves
To the utilization rate of lithium ion battery raw material, filter screen is made using hard material, so as to the break process more efficiency of agglomeration.
Further, the aperture of the filter screen is identical with the screen-aperture size crossed on sieve plate.
In this way, the material particular diameter range that aperture unanimously allows to carry out stirring is consistent, to guarantee product quality.
Further, further include the vacuum pump being set at the top of the stir chamber, the top of the vacuum pump and described stir
Mix the external contact of chamber, the intracavity contact of the bottom end of the vacuum pump and the stir chamber.
In this way, the slurry exposure after avoiding sieving is inhaled in air by vacuum pump by the evacuating air in stir chamber
Pulp deterioration caused by receipts moisture ensure that stablizing for the chemical property of slurry plays.
Further, the agitating device includes the motor at the top of the stir chamber, further include be vertically arranged and on
End connected with the motor drive, the agitating shaft that lower end and the stir chamber bottom are rotatably connected, the periphery of the agitating shaft
Extend outwardly on side and is equipped with stirring support arm.
Horizontally rotate in this way, driving agitating shaft to do by motor, so that stirring support arm rotation is driven, to realize to lithium ion
The whipping process of cell size.
Further, the agitating device further includes the casing being sheathed on outside the agitating shaft lower part, and described sleeve pipe and
By connection key connection between the agitating shaft, to limit described sleeve pipe along the movement of the agitating shaft circumferential direction, make described sleeve pipe
It is only capable of being axially moved along the agitating shaft, the stirring support arm is connected on all side external surfaces of described sleeve pipe, is additionally provided with
The casing up and down motion control mechanism to move up and down for controlling described sleeve pipe in the agitating shaft rotation process.
In this way, casing drives stirring support arm to do the movement in the axial direction of agitating shaft, keep stirring more abundant.
Further, the stirring support arm includes the first stirring support arm and the second stirring support arm, the first stirring support arm
The relatively described second stirring support arm is set to horizontal top, and the length of the first stirring support arm is greater than the second stirring support arm
Length.
In this way, making more abundant to the stirring of pulp of lithium ion battery in stir chamber.
Further, the up and down motion control mechanism is included in spaced edge on the internal chamber wall of the stir chamber
Distribution and along several convex blocks of the stir chamber internal protrusion in the stir chamber circumferential direction, first stirring support arm outer end exists
When turning at the convex block, contact site is formed on the upside of the convex block and on the downside of corresponding first stirring support arm outer end, and
Any contact site is the acclivitous bevel structure in front along rotation direction.
In this way, support arm is stirred when turning to contact tab since convex block interval is arranged, and under the action of convex block, stirring
Support arm drives casing to move upwards, and when stirring support arm turns to the interval between two convex blocks, under gravity,
Stirring support arm drives casing to move downward, and until encountering next convex block, circuits sequentially, makes to starch lithium ion battery in stir chamber
The stirring of material is more abundant.
Further, the first stirring support arm includes stirring rod that is horizontally disposed and connecting with described sleeve pipe, is also wrapped
It includes and is vertically arranged and connecting rod that upper end is connected with the stirring rod bottom, further include horizontally disposed and upper surface and the connection
The scraper plate of bar bottom connection, the scraper plate are configured to prismatoid structure.
In this way, scraper plate plays the role of uniform stirring.
Detailed description of the invention
Structural schematic diagram when Fig. 1 is the charging baffle closing through slot of the utility model.
Fig. 2 is the structural schematic diagram when charging baffle of the utility model is opened.
Fig. 3 is the structural schematic diagram of the first stirring support arm of the utility model.
Specific embodiment
Below with reference to example attached drawing, the utility model is described in further detail.
When specific implementation: as shown in Figure 1 to Figure 3, a kind of pulp of lithium ion battery sieving equipment, including cabinet 1, the case
There is a stir chamber 2, the stir chamber 2 is built-in with slurry stirring device, and the top of the cabinet 1 offers charging in body 1
Mouthfuls 11 the cabinet 1 is outer and the stir chamber 2 to be connected to, and is also equipped with sieve structure in the feed inlet 11, the sieving is tied
Structure has the sieve plate 12 excessively for offering several sieve pores, it is characterized in that, it is also set to one in the cabinet 1 described
The crusher chamber 3 of 2 side of stir chamber, described sieve plate 12 is tilting excessively and lower end extends to 3 direction of crusher chamber, described to cross sieve plate 12
Upper surface formed for agglomeration roll agglomeration rolling path, it is described cross sieve plate 12 lower surface towards the stir chamber 2, it is described
The upper end of crusher chamber 3 is connected to the agglomeration rolling path for crossing sieve plate 12, and the crusher chamber 3 is built-in with crushing device, described
3 lower end side of crusher chamber is also provided with the port 32 being connected with 2 bottom of stir chamber.
In this way, screening is filtered to lithium ion battery anode slurry by using sieve structure is crossed, it is enabled to pass through sieve plate
The lithium ion battery anode slurry of sieve pore enter stir chamber and be stirred, meanwhile, it is tilting cross sieve plate will be not over sieve pore
Agglomeration introduce crusher chamber in, after be crushed by the crushing device in crusher chamber to agglomeration, then by it is broken agglomerate lead
Enter in stir chamber, realizes the raising to the raw material availability of pulp of lithium ion battery.
Wherein, the sieve structure of crossing further includes being set to the crusher chamber 3 and the sieving by axis swing of vertical direction
The charging baffle 13 of 12 joining place of plate, the upper end of the charging baffle 13 and the inner wall of the cabinet 1 are hinged, the charging baffle
13 when being rocked to no external force influences state, and lower end and agglomeration rolling path contact are to close the through slot 31.
In this way, make cannot be by the agglomeration of sieve pore when retaining excessive on crossing sieve plate, the active force in gravity that agglomerates is pushed open
Baffle is fed, to slide to crusher chamber, and the device that is broken is smashed.
Wherein, the upper surface of the upper end of sieve plate 12 is crossed described in the lower port face of the feed inlet 11.
In this way, first falling on tilting sieve plate upper end excessively, then when pulp of lithium ion battery enters mixing plant from feed inlet
One is done under gravity along the inclined-plane rolling process for crossing sieve plate, is enabled directly sliding by the pulp of lithium ion battery of sieve pore
It drops down onto stir chamber, while cannot be rolled by the pulp of lithium ion battery of sieve pore to sieve plate lower end excessively to contact charging baffle,
When constant weight cannot be run up at charging baffle by the pulp of lithium ion battery of sieve pore, will be pushed in gravity
It drives material baffle into, and slides to crusher chamber.
Wherein, the crushing device includes the telescopic rod 4 being vertically arranged, the upper end of the telescopic rod 4 and the crusher chamber 3
Top connection, the lower end of the telescopic rod 4 are equipped with quartering hammer 41, and the lower section of the quartering hammer 41 is provided with side and described broken
The filter screen 42 of the inner wall connection of chamber 3, the lower section of the filter screen 42 is tilting a guide plate 43, and the lower end of the guide plate 43 is prolonged
Extend to the port 32.
In this way, agglomeration slides on the filter screen to crusher chamber from through slot, is moved up and down by telescopic rod and drive quartering hammer
To on filter screen agglomeration carry out break process, wait agglomerate be broken beat it is broken after, be filtered by filter screen, then by mistake
The slurries of filter are poured into stir chamber across port by guide plate and are stirred, and the broken and filtering to agglomeration further improves
To the utilization rate of lithium ion battery raw material.
Wherein, the aperture of the filter screen 42 is identical with the screen-aperture size crossed on sieve plate 12.
In this way, the material particular diameter range that pore size unanimously allows to carry out stirring is consistent, to guarantee product quality.
It wherein, further include the vacuum pump 5 for being set to 2 top of stir chamber, the top of the vacuum pump 5 and the stirring
The external contact of chamber 2, the bottom end of the vacuum pump 5 and the intracavity contact of the stir chamber 2.
In this way, the slurry exposure after avoiding sieving is inhaled in air by vacuum pump by the evacuating air in stir chamber
Pulp deterioration caused by receipts moisture ensure that stablizing for the chemical property of slurry plays.
Wherein, the agitating device includes the motor 6 set on 2 top of the stir chamber, further includes being vertically arranged and upper end
With the motor 6 transmission connection, the agitating shaft 7 that is rotatably connected of lower end and 2 bottom of the stir chamber, the agitating shaft 7 it is outer
Extend outwardly on side and is equipped with stirring support arm.
Horizontally rotate in this way, driving agitating shaft to do by motor, so that stirring support arm rotation is driven, to realize to lithium ion
The whipping process of cell size.
Wherein, the agitating device further includes the casing 71 being sheathed on outside 7 lower part of agitating shaft, and 71 He of described sleeve pipe
Made described by connection key connection with limiting described sleeve pipe 71 along the circumferential movement of the agitating shaft 7 between the agitating shaft 7
Casing 71 is only capable of being axially moved along the agitating shaft 7, and the stirring support arm is connected on all side external surfaces of described sleeve pipe 71,
It is additionally provided with the casing up and down motion control machine to move up and down for controlling described sleeve pipe 71 in 7 rotation process of agitating shaft
Structure.
In this way, casing drives stirring support arm to do the movement in the axial direction of agitating shaft, keep stirring more abundant.
Wherein, the stirring support arm includes the first stirring support arm 81 and the second stirring support arm 82, the first stirring support arm
The 81 relatively described second stirring support arms 82 are set to horizontal top, and the length of the first stirring support arm 81 is greater than described second and stirs
Mix the length of support arm 82.
In this way, making more abundant to the stirring of pulp of lithium ion battery in stir chamber.
Wherein, described sleeve pipe up and down motion control mechanism is included in spaced edge on the internal chamber wall of the stir chamber 2
It is distributed in 2 circumferential direction of stir chamber and along several convex blocks 21 of 2 internal protrusion of stir chamber, the first stirring support arm 81
Outer end is formed on the downside of 21 upside of convex block and corresponding first stirring, 81 outer end of support arm when turning at the convex block 21
Contact site, and any contact site is the acclivitous bevel structure in front along rotation direction.
In this way, support arm is stirred when turning to contact tab since convex block interval is arranged, and under the action of convex block, stirring
Support arm drives casing to move upwards, and when stirring support arm turns to the interval between two convex blocks, under gravity,
Stirring support arm drives casing to move downward, and until encountering next convex block, circuits sequentially, makes to starch lithium ion battery in stir chamber
The stirring of material is more abundant.
Wherein, the first stirring support arm 81 include it is horizontally disposed and and the connection of described sleeve pipe 71 stirring rod 811, also wrap
It includes and is vertically arranged and connecting rod 812 that upper end is connected with 811 bottom of stirring rod, further include horizontally disposed and upper surface and institute
The scraper plate 813 of 812 bottom of connecting rod connection is stated, the scraper plate 813 is configured to prismatoid structure.
In this way, scraper plate plays the role of uniform stirring.
When implementation, filter screen 42 is made using hard material, so as to the break process more efficiency of agglomeration.
When implementation, electric pushrod can be used to be realized for telescopic rod 4, but it is not limited to this, it is only necessary to realize Telescopic
, also air-leg can be used to be realized, can be adjusted according to the actual situation.
Claims (10)
1. a kind of pulp of lithium ion battery sieving equipment, including cabinet, the cabinet is interior to have a stir chamber, the stir chamber
It is built-in with slurry stirring device, feed inlet is offered at the top of the cabinet to be connected to outside the cabinet and the stir chamber, institute
It states and was also equipped with sieve structure in feed inlet, the sieve structure excessively has the sieve plate excessively for offering several sieve pores, feature
Be, the crusher chamber for being also set to the stir chamber side with one in the cabinet, it is described cross that sieve plate is tilting and lower end to
The broken cavity direction extends, and the upper surface for crossing sieve plate forms the agglomeration rolling path rolled for agglomeration, described to cross sieve plate
Lower surface towards the stir chamber, the upper end of the crusher chamber be connected to the agglomeration rolling path for crossing sieve plate, described to break
It is broken it is intracavitary be equipped with crushing device, crusher chamber lower end side is also provided with the port being connected with the stir chamber bottom.
2. pulp of lithium ion battery sieving equipment as described in claim 1, which is characterized in that it is described cross sieve structure further include with
Vertical direction is that axis swing is set to the crusher chamber and the charging baffle for crossing sieve plate joining place, described to feed the upper of baffle
The inner wall of end and the cabinet is hinged, and the charging baffle is when being rocked to no external force influences state, lower end and the agglomeration
Rolling path contact is to close the crusher chamber and the seam for crossing sieve plate.
3. pulp of lithium ion battery sieving equipment as claimed in claim 2, which is characterized in that the lower port of the feed inlet is just
To the upper surface of the upper end for crossing sieve plate.
4. pulp of lithium ion battery sieving equipment as described in claim 1, which is characterized in that the crushing device includes vertical
The lower end of connection at the top of the telescopic rod of setting, the upper end of the telescopic rod and the crusher chamber, the telescopic rod is equipped with quartering hammer,
The filter screen that side is connected with the inner wall of the crusher chamber is provided with below the quartering hammer, the lower section of the filter screen is tilting
There is a guide plate, and the lower end of the guide plate extends to the port；
The aperture of the filter screen is identical with the screen-aperture size crossed on sieve plate.
5. pulp of lithium ion battery sieving equipment as described in claim 1, which is characterized in that further include being set to the stirring
The vacuum pump of top of chamber, the external contact on the top of the vacuum pump and the stir chamber, the bottom end of the vacuum pump and described
The intracavity contact of stir chamber.
6. pulp of lithium ion battery sieving equipment as described in claim 1, which is characterized in that the agitating device includes being set to
Motor at the top of the stir chamber, further include be vertically arranged and upper end connected with the motor drive, lower end and the stir chamber
The agitating shaft that bottom is rotatably connected extends outwardly on the peripheral side of the agitating shaft and is equipped with stirring support arm.
7. pulp of lithium ion battery sieving equipment as claimed in claim 6, which is characterized in that the agitating device further includes set
Casing outside the agitating shaft lower part, and by connection key connection between described sleeve pipe and the agitating shaft, to limit
Casing is stated along the movement of the agitating shaft circumferential direction, makes described sleeve pipe be only capable of being axially moved along the agitating shaft, the stirring support arm
It is connected on all side external surfaces of described sleeve pipe, is additionally provided with for controlling described sleeve pipe in the agitating shaft rotation process
The casing up and down motion control mechanism of up and down motion.
8. pulp of lithium ion battery sieving equipment as claimed in claim 7, which is characterized in that the stirring support arm includes first
Support arm and the second stirring support arm are stirred, the relatively described second stirring support arm of the first stirring support arm is set to horizontal top, and institute
The length for stating the first stirring support arm is greater than the length of the second stirring support arm.
9. pulp of lithium ion battery sieving equipment as claimed in claim 8, which is characterized in that described sleeve pipe, which moves up and down, to be controlled
Mechanism is included in spaced on the internal chamber wall of the stir chamber be distributed in the stir chamber circumferential direction and along the stir chamber
Several convex blocks of internal protrusion, first stirring support arm outer end are on the upside of the convex block and right when turning at the convex block
It answers and forms contact site on the downside of first stirring support arm outer end, and any contact site is the front direction along rotation direction
Upper inclined bevel structure.
10. pulp of lithium ion battery sieving equipment as claimed in claim 8, which is characterized in that the first stirring support arm packet
Stirring rod that is horizontally disposed and connecting with described sleeve pipe is included, further includes being vertically arranged and upper end is connected with the stirring rod bottom
Connecting rod, further includes the scraper plate that horizontally disposed and upper surface is connected with the connecting rod bottom, and the scraper plate is configured to prismatoid
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821873989.7U CN209173467U (en) | 2018-11-14 | 2018-11-14 | Pulp of lithium ion battery sieving equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821873989.7U CN209173467U (en) | 2018-11-14 | 2018-11-14 | Pulp of lithium ion battery sieving equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209173467U true CN209173467U (en) | 2019-07-30 |
Family
ID=67364302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821873989.7U Expired - Fee Related CN209173467U (en) | 2018-11-14 | 2018-11-14 | Pulp of lithium ion battery sieving equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209173467U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110585772A (en) * | 2019-10-24 | 2019-12-20 | 哈尔滨万鑫石墨谷科技有限公司 | Slurry filtering system and filtering method |
-
2018
- 2018-11-14 CN CN201821873989.7U patent/CN209173467U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110585772A (en) * | 2019-10-24 | 2019-12-20 | 哈尔滨万鑫石墨谷科技有限公司 | Slurry filtering system and filtering method |
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| 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: 20190730 Termination date: 20201114 |