CN219785051U - Multistage grinding equipment for lithium iron phosphate precursor - Google Patents
Multistage grinding equipment for lithium iron phosphate precursor Download PDFInfo
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- CN219785051U CN219785051U CN202321244843.7U CN202321244843U CN219785051U CN 219785051 U CN219785051 U CN 219785051U CN 202321244843 U CN202321244843 U CN 202321244843U CN 219785051 U CN219785051 U CN 219785051U
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- Prior art keywords
- grinding
- grinding box
- primary
- box
- iron phosphate
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- 238000000227 grinding Methods 0.000 title claims abstract description 120
- 239000002243 precursor Substances 0.000 title claims abstract description 30
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 title claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 31
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 15
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000007790 scraping Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 description 6
- 238000010030 laminating Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Landscapes
- Crushing And Grinding (AREA)
Abstract
The utility model discloses multi-stage grinding equipment for a lithium iron phosphate precursor, which belongs to the technical field of grinding equipment and comprises a primary grinding box, wherein one side of the top of the primary grinding box is provided with a feed inlet, and the multi-stage grinding equipment also comprises: the secondary grinding box is arranged below the primary grinding box, the primary grinding box is communicated with the secondary grinding box through a blanking pipe, and a detachable double-filtering unit is arranged on the blanking pipe; the grinding medium comprises a primary grinding medium and a secondary grinding medium which are respectively arranged in the primary grinding box and the secondary grinding box; the stirring mechanism is arranged in the first-stage grinding box and the second-stage grinding box; the filtering and discharging unit is arranged at the bottom of the secondary grinding box, and the two-stage grinding and filtering is arranged, so that the grinding efficiency and uniformity of the precursor are effectively improved; the detachable double filtering unit is added between the primary grinding and the secondary grinding, so that zirconium balls and foreign matters mixed in the precursor are effectively intercepted, and meanwhile, the method is simple to operate and low in manufacturing cost.
Description
Technical Field
The utility model relates to the technical field of grinding equipment, in particular to multi-stage grinding equipment for a lithium iron phosphate precursor.
Background
The lithium iron phosphate positive electrode material has high specific capacity, good charge and discharge performance, good circularity and high safety, and meanwhile, the lithium iron phosphate positive electrode material is more and more favored in the market due to low price.
The current industrialized lithium iron phosphate precursor needs to be ground to uniform granularity to meet the performance of the finished product. The mainstream stirring mill grinds inefficiency, and the homogeneity of grind granularity is poor, so this patent provides a lithium iron phosphate precursor with multistage grinding equipment, this equipment easy operation, low cost.
Disclosure of Invention
Aiming at the problems in the technical background, the utility model aims to provide multi-stage grinding equipment for the lithium iron phosphate precursor, so that the grinding efficiency of the lithium iron phosphate precursor is improved, the grinding granularity is more uniform, and the problems of low grinding efficiency and poor grinding granularity uniformity of the traditional stirring mill in the background technology are solved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a lithium iron phosphate precursor is with multistage grinding equipment, includes one-level grinding case, and one-level grinding case top one side is equipped with the feed inlet, still includes: the secondary grinding box is arranged below the primary grinding box, the primary grinding box is communicated with the secondary grinding box through a blanking pipe, and a detachable double-filtering unit is arranged on the blanking pipe; the grinding medium comprises a primary grinding medium and a secondary grinding medium which are respectively arranged in the primary grinding box and the secondary grinding box; the bottom end of the stirring shaft penetrates through the primary grinding box and is inserted into the secondary grinding box, and primary stirring paddles and secondary stirring paddles are respectively arranged on the stirring shafts in the primary grinding box and the secondary grinding box; and the filtering and discharging unit is arranged at the bottom of the secondary grinding box.
In the above technical solution, further, the primary grinding medium is 3mm zirconium balls, and the secondary grinding medium is 1mm zirconium balls.
In the above technical scheme, further, the double filtration unit includes the one-level screen cloth of installing in unloading pipe top, unloading pipe middle part is equipped with the valve, install detachable pocket filter on the unloading pipe of valve below.
In the above technical scheme, further, the bottom is the bucket shape in the secondary grinding case, filter the discharge unit including set up in the second grade discharge gate at bucket shape center, the second grade screen cloth is installed at the top in the second grade discharge gate.
In the above technical scheme, still further, prevent depositing the mechanism is installed to the (mixing) shaft bottom, prevent depositing the mechanism and be in including installing perpendicularly the scraper blade of (mixing) shaft bottom surface, scraper blade one side to the extension of secondary grinding incasement bottom surface is connected with the frame, the parallel is equipped with a plurality of stirring teeth on the frame.
In the above technical scheme, further, the thickness of scraper blade is less than the diameter of second grade screen cloth, just the scraper blade with the laminating is rotated to second grade screen cloth top surface, the frame bottom surface with the laminating is rotated to second grade grinding incasement bottom surface.
In the above technical solution, further, the stirring mechanism includes: the motor is arranged on one side of the top of the primary grinding box, and the output end of the motor is connected with a driving wheel; the stirring shaft, the top of stirring shaft is connected with from the driving wheel, the action wheel with from the driving wheel through the drive belt connection.
Compared with the prior art, the utility model has the following advantages:
according to the utility model, by arranging two-stage grinding and filtering, the grinding efficiency and uniformity of the precursor are effectively improved; the detachable double filter unit is added between the primary grinding and the secondary grinding, so that zirconium balls and foreign matters mixed into the precursor are effectively intercepted; the utility model has simple operation and lower manufacturing cost.
Drawings
FIG. 1 is a schematic diagram showing a multi-stage polishing apparatus according to an embodiment of the present utility model installed on a frame;
FIG. 2 is a schematic semi-sectional perspective view of a multi-stage grinding apparatus according to an embodiment of the present utility model;
FIG. 3 is a front perspective view of an embodiment of the present utility model;
FIG. 4 is a perspective view of an anti-settling mechanism according to an embodiment of the present utility model;
fig. 5 is a schematic view of a bag filter according to an embodiment of the present utility model.
In the figure: 1. a feed inlet; 2. a stirring shaft; 21. driven wheel; 3. a motor; 31. a driving wheel; 32. a transmission belt; 4. a first stage grinding box; 5. a primary stirring paddle; 6. 3mm zirconium balls; 7. a first-stage screen; 71. discharging pipes; 8. a valve; 9. a bag filter; 11. a secondary grinding box; 12. a secondary stirring paddle; 13. 1mm zirconium balls; 14. a second-stage screen; 15. a second-stage discharge port; 16. a scraper; 161. a frame; 162. stirring teeth.
Detailed Description
The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.
As shown in fig. 1-5, a multistage grinding device for lithium iron phosphate precursor, which comprises a first-stage grinding box 4, wherein one side of the top of the first-stage grinding box 4 is provided with a feed inlet 1, and the multistage grinding device further comprises: the secondary grinding box 11, the secondary grinding box 11 is arranged below the primary grinding box 4, the secondary grinding box is installed overhead through a portal frame, the installation mode of the portal frame is of an existing structure, details are omitted, the primary grinding box 4 and the secondary grinding box 11 are communicated through a blanking pipe 71, a detachable double filtering unit is arranged on the blanking pipe 71 and comprises a primary screen 7 arranged at the top of the blanking pipe 71, a valve 8 is arranged in the middle of the blanking pipe 71, a detachable bag filter 9 is arranged on the blanking pipe 71 below the valve 8, circulation of lithium iron phosphate precursor is stopped when the valve 8 is arranged for convenient detachment, and zirconium balls and foreign matters mixed in the precursor are removed through the detachable bag filter 9;
grinding media comprising 3mm zirconium balls 6 and 1mm zirconium balls 13 respectively arranged in a primary grinding box 4 and a secondary grinding box 11;
the stirring mechanism is arranged in the primary grinding box 4 and the secondary grinding box 11 and is used for providing driving force for grinding;
the filtering and discharging unit is arranged at the bottom of the secondary grinding box 11, the bottom in the secondary grinding box 11 is bucket-shaped, the bucket-shaped is arranged to facilitate discharging, the filtering and discharging unit comprises a secondary discharging hole 15 arranged in the center of the bucket shape, and a secondary screen 14 is arranged at the inner top of the secondary discharging hole 15.
During operation, the material inlet 1 enters the first-stage grinding box 4 for grinding, wherein the grinding medium of the first-stage grinding cavity is 3mm zirconium balls 6, after grinding for a period of time, the valve 8 is opened, the precursor flows into the second-stage grinding box 11 after passing through the first-stage screen 7 and the bag filter 9, the grinding medium of the second-stage grinding cavity is 1mm zirconium balls 13 for continuous grinding for a period of time, and after the granularity of the precursor is qualified, the precursor flows out from the second-stage discharge port 15 through the second-stage screen 14, so that the lithium iron phosphate precursor with qualified granularity is obtained.
As shown in fig. 2-4, the bottom end of the stirring shaft 2 is provided with an anti-precipitation mechanism, the anti-precipitation mechanism comprises a scraping plate 16 vertically arranged on the bottom surface of the stirring shaft 2, one side of the scraping plate 16 is connected with a frame 161 in an extending manner to the inner bottom surface of the secondary grinding box 11, a plurality of stirring teeth 162 are arranged on the frame 161 in parallel, the scraping plate 16 drives the frame 161 and the plurality of stirring teeth 162 arranged on the frame 161 to scoop up the lithium iron phosphate precursor precipitated on the secondary screen 14 and the bucket-shaped surface in the rotating process, so that precipitation and blocking filtration are avoided;
the thickness of scraper blade 16 is far less than the diameter of second grade screen cloth 14, ensures lithium iron phosphate precursor filtration efficiency, and scraper blade 16 and second grade screen cloth 14 top surface rotate the laminating, carry out the shovel to 1mm zirconium ball 13 of deposit or lithium iron phosphate precursor, avoid the jam, frame 161 bottom surface rotates the laminating with the interior bottom surface of second grade grinding case 11, stop the granule and deposit.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a lithium iron phosphate precursor is with multistage grinding equipment, including installing one-level grinding case (4) on the portal support body, one-level grinding case (4) top one side is equipped with feed inlet (1), its characterized in that still includes:
the secondary grinding box (11), the secondary grinding box (11) is arranged below the primary grinding box (4), the primary grinding box (4) is communicated with the secondary grinding box (11) through a blanking pipe (71), and a detachable double-filtering unit is arranged on the blanking pipe (71);
the grinding media comprise a primary grinding medium and a secondary grinding medium which are respectively arranged in the primary grinding box (4) and the secondary grinding box (11);
the stirring mechanism comprises a stirring shaft (2), the bottom end of the stirring shaft (2) penetrates through the primary grinding box (4) and is inserted into the secondary grinding box (11), and primary stirring paddles (5) and secondary stirring paddles (12) are respectively arranged on the stirring shaft (2) in the primary grinding box (4) and the secondary grinding box (11);
the filtering and discharging unit is arranged at the bottom of the secondary grinding box (11).
2. A multi-stage grinding apparatus for lithium iron phosphate precursor according to claim 1, wherein the primary grinding medium is 3mm zirconium balls (6) and the secondary grinding medium is 1mm zirconium balls (13).
3. The multistage grinding device for the lithium iron phosphate precursor according to claim 1, wherein the double filtering unit comprises a first-stage screen (7) arranged at the top of a discharging pipe (71), a valve (8) is arranged in the middle of the discharging pipe (71), and a detachable bag filter (9) is arranged on the discharging pipe (71) below the valve (8).
4. The multistage grinding device for the lithium iron phosphate precursor according to claim 1, wherein the bottom in the secondary grinding box (11) is bucket-shaped, the filtering and discharging unit comprises a secondary discharging hole (15) arranged in the center of the bucket shape, and a secondary screen (14) is arranged at the inner top of the secondary discharging hole (15).
5. The multistage grinding device for lithium iron phosphate precursors according to claim 4, wherein an anti-sedimentation mechanism is installed at the bottom end of the stirring shaft (2), the anti-sedimentation mechanism comprises a scraping plate (16) vertically installed on the bottom surface of the stirring shaft (2), a frame (161) is connected to one side of the scraping plate (16) to the inner bottom surface of the secondary grinding box (11) in an extending mode, and a plurality of stirring teeth (162) are arranged on the frame (161) in parallel.
6. The multistage grinding device for lithium iron phosphate precursor according to claim 5, wherein the thickness of the scraper (16) is smaller than the diameter of the secondary screen (14), the scraper (16) is rotationally attached to the top surface of the secondary screen (14), and the bottom surface of the frame (161) is rotationally attached to the inner bottom surface of the secondary grinding box (11).
7. The multi-stage grinding apparatus for lithium iron phosphate precursor according to claim 1, wherein said stirring mechanism further comprises:
the motor (3) is arranged on one side of the top of the primary grinding box (4), and the output end of the motor (3) is connected with a driving wheel (31);
the driven wheel (21) is arranged at the top end of the stirring shaft (2), and the driving wheel (31) is connected with the driven wheel (21) through a transmission belt (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321244843.7U CN219785051U (en) | 2023-05-22 | 2023-05-22 | Multistage grinding equipment for lithium iron phosphate precursor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321244843.7U CN219785051U (en) | 2023-05-22 | 2023-05-22 | Multistage grinding equipment for lithium iron phosphate precursor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219785051U true CN219785051U (en) | 2023-10-03 |
Family
ID=88156001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321244843.7U Active CN219785051U (en) | 2023-05-22 | 2023-05-22 | Multistage grinding equipment for lithium iron phosphate precursor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219785051U (en) |
-
2023
- 2023-05-22 CN CN202321244843.7U patent/CN219785051U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231219 Address after: 314500 Room 303, Building 1, No. 86, Guanghua Road, Tongxiang Economic Development Zone, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Youshan New Material Technology Co.,Ltd. Patentee after: Inner Mongolia Huajing New Materials Co.,Ltd. Address before: 314500 Room 303, Building 1, No. 86, Guanghua Road, Tongxiang Economic Development Zone, Jiaxing City, Zhejiang Province Patentee before: Zhejiang Youshan New Materials Co.,Ltd. |