CN219596796U

CN219596796U - Grinding device for lithium iron phosphate precursor

Info

Publication number: CN219596796U
Application number: CN202320676373.5U
Authority: CN
Inventors: 瞿明军; 付全军; 罗显明; 何丰
Original assignee: Panzhihua Chuanfa Longmang New Material Co ltd; Sichuan Lomon Phosphorous Chemistry Co ltd
Current assignee: Panzhihua Chuanfa Longmang New Material Co ltd; Sichuan Lomon Phosphorous Chemistry Co ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-08-29
Anticipated expiration: 2033-03-30

Abstract

The utility model relates to a grinding device, and provides a grinding device for a lithium iron phosphate precursor, which aims to improve the grinding efficiency of the lithium iron phosphate precursor. The polishing device for the lithium iron phosphate precursor can efficiently polish the lithium iron phosphate precursor.

Description

Grinding device for lithium iron phosphate precursor

Technical Field

The utility model relates to the technical field of grinding devices, in particular to a grinding device for a lithium iron phosphate precursor.

Background

The lithium iron phosphate electrode material is mainly used for various lithium ion batteries. The application fields of lithium iron phosphate mainly include energy storage equipment, electric tools, light electric vehicles, small-sized equipment and mobile power supplies. The lithium iron phosphate has the advantages of long cycle life, safety performance, low cost, high temperature stability, rich resources and the like. Therefore, the method is favored by the new energy industry. However, when the lithium iron phosphate precursor is subjected to grinding processing, a certain requirement on the fineness of the grinding particles is often met. The higher the particle fineness requirement, the longer the grinding time it takes at the same grinding speed, and the more energy is consumed.

The lithium iron phosphate precursor includes iron phosphate, lithium carbonate, carbon source, and the like. Typically crushed to submicron levels using a turbine or bar and pin mill. But the equipment has high energy consumption and large investment. The traditional stirring mill has low energy consumption, but low rotating speed and poor grinding efficiency.

Disclosure of Invention

The utility model aims to provide a grinding device for a lithium iron phosphate precursor, which can grind the lithium iron phosphate precursor efficiently.

The embodiment of the utility model is realized by the following technical scheme: the grinding device of the lithium iron phosphate precursor comprises a grinding pipe which is horizontally arranged and one end of which is an open end, a discharge pipe which is arranged at the open end of the grinding pipe, a feeding pipe which is arranged at one end of the grinding pipe far away from the discharge pipe, a plurality of grinding balls which are arranged in the grinding pipe, and a vibrating device which is attached to the outer wall of the grinding pipe.

Further, the grinding device also comprises a cover cap covered at the opening end of the grinding pipe, and the discharge pipe is communicated with the inside of the grinding pipe after passing through the cover cap.

Further, the cap is in threaded connection with the outer wall of the grinding pipe.

Further, the sealing device also comprises an annular sealing gasket; the sealing gasket is arranged between the end part of the grinding pipe and the cap.

Further, the gasket is provided with a plurality of pieces.

Further, a screen is arranged at one end of the discharge pipe, which is close to the grinding pipe.

Further, the vibration device comprises an ultrasonic apparatus.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects: when the grinding device for the lithium iron phosphate precursor is used, firstly, the grinding balls are placed into the grinding pipe, then materials are slowly pumped into the grinding device from the feeding pipe, the grinding balls in the grinding device continuously vibrate under the action of the vibration device and collide with each other, the effects of extruding, crushing and grinding particles in slurry are achieved, and the ground slurry is discharged from the discharge pipe. And the particle size of the slurry after grinding can be conveniently adjusted by changing the diameter, the material, the roughness and the like of the grinding balls and the residence time of the slurry in the grinding pipe. The device has the advantages of low energy consumption, high grinding effect and simple operation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a polishing apparatus for a lithium iron phosphate precursor according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a cap portion according to an embodiment of the present utility model.

Icon: 1-grinding pipe, 2-discharging pipe, 3-feeding pipe, 4-grinding ball, 5-vibrating device, 6-cap, 7-sealing gasket and 8-screen.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which a product of the application is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples

The following will further describe the polishing apparatus for lithium iron phosphate precursor according to the present embodiment, as shown in fig. 1-2, comprising a polishing tube 1 horizontally disposed and having an open end at one end, a discharge tube 2 disposed at the open end of the polishing tube 1, a feed tube 3 disposed at one end of the polishing tube 1 far away from the discharge tube 2, a plurality of polishing balls 4 disposed in the polishing tube 1, and a vibration device 5 attached to the outer wall of the polishing tube 1. Specifically, when in use, firstly, the grinding balls 4 are put into the grinding pipe 1, then materials are slowly pumped into the grinding device from the feeding pipe 3, the grinding balls 4 in the grinding device continuously vibrate under the action of the vibration device 5 and collide with each other, so that the effects of extruding, crushing and grinding particles in slurry are achieved, and the ground slurry is discharged from the discharging pipe 2. And the particle size of the slurry after grinding can be adjusted conveniently by changing the diameter, material, roughness, etc. of the grinding balls 4 and the residence time of the slurry in the grinding tube 1. The device has the advantages of low energy consumption, high grinding effect and simple operation.

In this embodiment, the polishing apparatus further comprises a cap 6 covering the open end of the polishing tube 1, and the discharge tube 2 passes through the cap 6 and is communicated with the interior of the polishing tube 1. The cap 6 is in threaded connection with the outer wall of the grinding pipe 1. Specifically, this makes it possible to easily remove the cap 6 together with the discharge pipe 2 and replace the grinding ball 4 or clean the grinding pipe 1.

In this embodiment, the sealing device further comprises an annular sealing gasket 7; a gasket 7 is provided between the end of the grinding tube 1 and the cap 6. The gasket 7 is provided with a plurality of pieces. Specifically, after the grinding balls 4 with different diameters are replaced, the gaps and the arrangement between the grinding balls 4 are difficult to ensure, so that the positions of the caps 6 can be adjusted by adjusting the number of the gaskets, and the positions of the caps 6 are different, so that the extrusion force of the caps 6 on the grinding balls 4 is different, and the density between the grinding balls 4 can be well adjusted.

The discharge pipe 2 in this embodiment is provided with a screen 8 at one end near the grinding pipe 1. Specifically, screens 8 of different pore sizes and porosities may be provided to adjust the grinding effect.

The vibration device 5 in the present embodiment includes an ultrasonic apparatus. Specifically, the ultrasonic device has a higher frontal vibration frequency, lower energy consumption, and more accords with the vibration mode of the grinding ball 4.

In summary, in the polishing apparatus for lithium iron phosphate precursor of the present embodiment, when in use, the polishing balls 4 are firstly placed into the polishing tube 1, then the material is slowly pumped into the polishing apparatus from the feeding tube 3, the polishing balls 4 in the polishing apparatus continuously vibrate under the action of the vibration device 5 and collide with each other, so as to achieve the effects of extruding, crushing and polishing the particles in the slurry, and the slurry after polishing is discharged from the discharge tube 2. And the particle size of the slurry after grinding can be adjusted conveniently by changing the diameter, material, roughness, etc. of the grinding balls 4 and the residence time of the slurry in the grinding tube 1. The device has the advantages of low energy consumption, high grinding effect and simple operation.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a grinder of lithium iron phosphate precursor which characterized in that: including horizontal setting and wherein one end is grinding pipe (1) of open end, locate row material pipe (2) of grinding pipe (1) open end is located grinding pipe (1) is kept away from inlet pipe (3) of row material pipe (2) one end, many are located grinding ball (4) in grinding pipe (1), and paste and locate vibrating device (5) of grinding pipe (1) outer wall.

2. The apparatus for grinding a lithium iron phosphate precursor according to claim 1, wherein: the grinding device is characterized by further comprising a cap (6) which is covered at the opening end of the grinding tube (1), and the discharge tube (2) is communicated with the inside of the grinding tube (1) after passing through the cap (6).

3. The apparatus for grinding a lithium iron phosphate precursor according to claim 2, wherein: the cap (6) is in threaded connection with the outer wall of the grinding pipe (1).

4. A grinding apparatus for lithium iron phosphate precursor according to claim 3, wherein: also comprises an annular sealing gasket (7); the sealing gasket (7) is arranged between the end part of the grinding pipe (1) and the cap (6).

5. The apparatus for polishing a lithium iron phosphate precursor according to claim 4, wherein: the sealing gasket (7) is provided with a plurality of pieces.

6. The apparatus for grinding a lithium iron phosphate precursor according to claim 1, wherein: one end of the discharge pipe (2) close to the grinding pipe (1) is provided with a screen (8).

7. The apparatus for grinding a lithium iron phosphate precursor according to claim 1, wherein: the vibration device (5) comprises an ultrasound apparatus.