Ball mill for recycling lithium batteries

Abstract

The utility model discloses a ball mill for recycling lithium batteries, which comprises a rack, a box body, a roller, a driving mechanism and a stirring mechanism, a plurality of steel balls are placed in the roller, a plurality of grinding grooves are arranged on the roller, and the stirring mechanism comprises a stirring shaft, dry blades and a baffle plate. The special grinding grooves are arranged to limit the rolling path of the steel balls, and the roller is driven to rotate through rolling of the steel balls, so that the rolling disorder of the steel balls is reduced to a certain extent, and vibration and noise generated by mutual collision when the steel balls roll and fall are reduced; the design of the active stirring blades is adopted, the stirring blades drive the steel balls to continuously roll in the roller, the traditional complex design that the roller is driven by a large gear is avoided, the power utilization rate is effectively increased, and the power consumption of equipment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lithium battery recycling, especially a ball mill for lithium battery recycling. BACKGROUND

[0002] Lithium battery is a kind of battery with lithium metal or lithium alloy as positive and negative electrode material and using non-aqueous electrolyte solution, and the traditional lithium battery is composed of the following five important parts: positive material, negative material, electrolyte, diaphragm and shell, since there are more harmful substances in lithium battery that can pollute the environment, so lithium battery needs to be recycled after attenuation.In processing, first, the lithium battery shell and metal pole and other large-size parts need to be crushed into small pieces, and then the pieces are further ground into fine particles by ball mill that can be sucked and treated by negative pressure fan.The ball mill is the key equipment for grinding the crushed materials into powder, and the cylinder of the ball mill is equipped with grinding body, which is generally a steel ball and is loaded into the cylinder according to different diameters and certain proportion, when the cylinder rotates, the grinding body rotates on the cylinder due to inertia, centrifugal force and friction force, when it is brought to a certain height, it is thrown off due to its own gravity, and the falling grinding body produces heavy blow and grinding effect on the materials in the cylinder like a projectile.

[0003] In the prior art, the large gear engaging with the driving assembly of the ball mill is arranged at one end of the cylinder, and the cylinder is driven to rotate by the large gear during transmission, so that the large gear transmits driving force to the entire cylinder and the other end of the cylinder during transmission, since the cylinder is large with a length of 3-4 meters, the driving torque of the large gear is long, the power loss is serious, the utilization rate of the output power of the driving assembly is also very low, and the power loss is high.In addition, the vibration and noise of the ball mill are also defects of the prior art. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem of overcoming the defects of the prior art and provides a ball mill for lithium battery recycling.

[0005] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0006] The utility model relates to a ball mill for lithium battery recycling, including frame, fixedly connected with the box on the frame, rotatably connected with the drum in the box, install the drive mechanism for driving the drum rotation on the frame, the side of the box is connected with the feeding hopper, the drum is placed with a plurality of steel ball, is equipped with a plurality of grinding grooves on the drum, is used for limiting the movement of steel ball, stirring mechanism, the stirring mechanism includes the stirring shaft rotatable connection with the drum, a plurality of blades and a plurality of baffles connected with the blade end portion are fixedly connected with the stirring shaft, drive mechanism, the drive mechanism includes the motor fixed on the frame, the driving pulley connected with the motor output end, the driven pulley connected with the stirring shaft and the belt connected with the driving pulley and the driven pulley, the discharge cylinder is fixed on one side of the box and is communicated with the box, and the discharge cylinder end is connected with the discharge pipe.

[0007] As a preferred technical scheme of the utility model, the drum includes two mutually butted half cylinders, the half cylinders are provided with semicircular notches movably connected with the stirring shaft on the two sides, the semicircular notches are matched with the stirring shaft, the half cylinder side is provided with a plurality of spokes, and the spokes are provided with openings communicated with the feeding hopper between the spokes for conveying the material to be ground.

[0008] As a preferred technical scheme of the utility model, the grinding grooves are evenly distributed along the drum surface, a plurality of grinding grooves are parallel to each other, and the grinding groove width is less than the steel ball diameter.

[0009] As a preferred technical scheme of the utility model, the baffle is threadedly connected with the blade end portion, the baffle is rectangular, the blade drives the baffle to rotate along the stirring shaft circumference, and the steel ball is stirred to roll in the drum.

[0010] As a preferred technical scheme of the utility model, one end of the stirring shaft is keyed with the driven pulley, the stirring shaft is provided with a bearing seat for supporting the stirring shaft on the two sides, and the bearing seat is fixed on the upper portion of the frame through bolt connection.

[0011] As a preferred technical scheme of the utility model, the driving pulley and the driven pulley are covered with a protective cover outside.

[0012] Compared with the prior art, the utility model has the beneficial effects as follows:

[0013] 1. The grinding groove is specially set to limit the rolling path of the steel ball, and the rotation of the drum is driven by the rolling of the steel ball, which reduces the disorder of the steel ball rolling to a certain extent and reduces the vibration and noise generated by the mutual impact of the steel ball rolling and falling;

[0014] 2. The design of the active stirring blade, through the stirring blade drive steel ball in the drum continuous rolling, avoids the complex design of the traditional gear drive drum, effectively provides the power utilization rate, reduces the equipment power consumption. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and serve to explain the present application, and do not constitute a limitation of the present application. In the drawings:

[0016] Figure 1 is the overall structure of the present application schematic diagram;

[0017] Figure 2 is the front view of the present application;

[0018] Figure 3 is the present application sectional view;

[0019] Figure 4 is the present application in the stirring mechanism schematic diagram;

[0020] Figure 5 is the present application in the drum schematic diagram;

[0021] In the drawing: 1, rack; 2, drum; 3, stirring mechanism; 4, driving mechanism; 5, discharge cylinder; 11, box; 12, feed hopper; 21, steel ball; 22, grinding groove; 23, half cylinder; 24, semicircular notch; 25, spoke; 31, stirring shaft; 32, blade; 33, baffle; 34, bearing seat; 41, motor; 42, driving pulley; 43, driven pulley; 44, belt, 45, protective cover; 51, discharge pipe. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and do not limit the present application.

[0023] The same reference signs in the drawings refer to the same components throughout.

[0024] As Figures 1-5As shown, the utility model provides a kind of ball mill for lithium battery recycling, including rectangular frame 1, box 11 is fixedly connected on frame 1 by bolt, rotatably connected with drum 2 in box 11, driving mechanism 3 for driving drum 2 rotation is installed on frame 1, the side wall of box 11 side is communicated with feed hopper 12 by welding;Drum 2, several steel balls 21 for grinding are placed in drum 2, several grinding grooves 22 are set up on drum 20, for limiting the movement of steel ball 21;Stirring mechanism 3, stirring mechanism 3 includes rotatably connected with drum 2 stirring shaft 31, several blades 32 connected fixedly with stirring shaft 31 and several baffles 33 connected with the end of blade 32;Driving mechanism 4, driving mechanism 4 includes motor 41 fixed on frame by bolt, driving pulley 42 keyed connected with the output end of motor 41, driven pulley 43 keyed connected with stirring shaft 31, driving pulley 42 and driven pulley 43 are connected by belt 44;Discharge cylinder 5, fixed on one side of box 11 and communicated with box 11, discharge cylinder 5 end is connected with discharge pipe 51, filter screen is provided at the front end of discharge pipe 51, the rear end of discharge pipe 51 is provided with flange connected with rear process pipeline.

[0025] The use mode of the utility model is as follows:

[0026] 1, start motor 41, motor 41 drives stirring shaft 31 to rotate by belt drive, so that blade 32 rotates, under the pushing action of baffle 33, steel ball 21 in drum 2 starts to roll up and down, multiple steel balls 21 roll together in drum 2, so as to drive drum 2 to rotate;

[0027] 2, the material to be ground is entered into box 11 through feed hopper 12 by external pipeline (not drawn), then enters into drum 2 through the gap on drum 2, after being continuously impacted and ground by steel ball 21, the powder formed is dropped to the bottom of box 11 through grinding groove 22;

[0028] 3, under the action of external negative pressure suction, the ground powder is discharged from ball mill through discharge pipe 51.

[0029] Further, drum 2 includes two mutually butted half cylinders 23, as preferred, two half cylinders 23 are connected by bolt fastening to form a circular cylinder, half cylinder 23 side is equipped with half circular notch 24 movably connected with stirring shaft 31, two half circular notches 24 are butted to form through slot matching with the diameter of through hole of stirring shaft 31, drum 2 can rotate around stirring shaft 31, to continuously grind material particles, half cylinder 23 side is equipped with several spokes 25, spoke 25 is evenly distributed along the radial direction of half cylinder 23, for supporting half circular notch 24. Opening is provided between spoke 25 and feed hopper 12, when material enters from feed hopper 12, it enters drum 2 through the opening, and then is ground by steel ball 21.

[0030] Further, as shown in Figure 4 The grinding groove 22 is evenly distributed along the surface of the drum 2, and several grinding grooves 22 are parallel to each other. Preferably, the grinding groove 22 is rectangular, and the width of the grinding groove 22 is smaller than the diameter of the steel ball 21. When the drum 2 rotates, the steel ball 21 can roll along the grinding groove 22, and when it reaches a certain height, it is thrown down under the action of gravity, and the falling steel ball 21 produces a heavy blow and grinding effect on the material in the drum 2.

[0031] Further, as shown in Figure 5 The baffle 33 is threadedly connected to the end of the blade 32. The baffle 33 is rectangular. Preferably, there are three blades 32, and the three blades are connected into a whole by the baffle 33. The center of the blade 32 is provided with a clamping groove for clamping on the stirring shaft 31. When the stirring shaft 31 rotates, the stirring shaft 31 drives the blade 32 to rotate, and the blade 32 drives the baffle 33 to rotate along the circumference of the stirring shaft 31, so as to drive the steel ball 21 to roll upwards along the grinding groove 22 in the drum 2, thereby driving the drum 2 to passively rotate.

[0032] Further, as shown in Figure 3 One end of the stirring shaft 31 is keyed connected with the driven pulley 43, so that the motor 41 drives the stirring shaft 31 to rotate through the belt transmission. The stirring shaft 31 is provided with a bearing seat 34 on both sides for supporting the stirring shaft 31. The bearing seat 34 is provided with a movable bearing. The stirring shaft 31 is connected with the bearing seat 34 through the bearing. The bearing seat 34 is fixed to the upper side of the rack 1 through bolts.

[0033] Further, the outer side of the driving pulley 42 and the driven pulley 43 is covered with a protective cover 45. Preferably, the protective cover 45 is fixed to the side of the box 11 through bolts.

[0034] Finally, it should be noted that the above only describes preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A ball mill for lithium battery recycling, characterized by, The utility model provides a kind of steel ball grinding machine, including rack (1), the box (11) is fixedly connected on the rack (1), the drum (2) is rotatably connected in the box (11), the drive mechanism (4) for driving the drum (2) rotation is installed on the rack (1), the box (11) one side is communicated with feed hopper (12);Drum (2), a plurality of steel balls (21) are placed in the drum (2), a plurality of grinding grooves (22) are opened in the drum (2), for limiting the movement of the steel ball (21);Stirring mechanism (3), the stirring mechanism (3) includes rotatably connected with the drum (2) stirring shaft (31), a plurality of blades (32) are fixedly connected with the stirring shaft (31) and a plurality of baffles (33) are connected to the end of the blade (32);Drive mechanism (4), the drive mechanism (4) includes motor (41) fixed on the rack, driving pulley (42) connected with the output end of the motor (41), driven pulley (43) connected with the stirring shaft (31) and belt (44) connected with the driving pulley (42) and the driven pulley (43);Discharge cylinder (5), fixed on one side of the box (11) and communicated with the box (11), the discharge cylinder (5) end is connected with discharge pipe (51).

2. The ball mill for lithium battery recycling according to claim 1, characterized in that, The drum (2) includes two mutually butted half cylinders (23), the half cylinder (23) both sides are provided with semicircular notch (24) movably connected with the stirring shaft (31), the semicircular notch (24) is matched with the stirring shaft (31), the half cylinder (23) side is equipped with a plurality of spokes (25), the opening is provided between the spoke (25) and communicated with the feed hopper (12), for conveying the material to be ground.

3. The ball mill for lithium battery recycling according to claim 1, characterized in that, The grinding groove (22) is evenly distributed along the surface of the drum (2), a plurality of grinding grooves (22) are parallel to each other, and the width of the grinding groove (22) is less than the diameter of the steel ball (21).

4. The ball mill for lithium battery recycling according to claim 1, characterized in that, The baffle (33) is threadedly connected with the end of the blade (32), the baffle (33) is rectangular, the blade (32) drives the baffle (33) to rotate along the circumference of the stirring shaft (31), for stirring the steel ball (21) to roll in the drum (2).

5. The ball mill for lithium battery recycling according to claim 1, characterized in that, One end of the stirring shaft (31) is keyed to the driven pulley (43), and the bearing seat (34) is provided on both sides of the stirring shaft (31) for supporting the stirring shaft (31), and the bearing seat (34) is fixed on the upper side of the rack (1) by bolt connection.

6. The ball mill for lithium battery recycling according to claim 1, characterized in that, The driving pulley (42) and the driven pulley (43) are covered with a protective cover (45) outside.

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