CN115646593A - Waste lithium iron phosphate battery recycling and crushing device - Google Patents

Abstract

The invention relates to a recycling and crushing device for waste lithium iron phosphate batteries. The first crushing pipe and the second crushing pipe are installed, and the two ends of the first crushing pipe and the second crushing pipe are rotatably installed on the inner wall of the box. A vibrating screen is installed under the crushing assembly. One side of the body is vertically equipped with an auger feeding conveyor, the lower part of the auger feeding conveyor opens the feeding port, the lower end of the vibrating screen protrudes from the side wall of the box and communicates with the feeding port, and the upper part of the auger feeding conveyor A feeding pipe is provided, and the outlet of the feeding pipe is located above the feeding port of the box body. The present invention ensures sufficient crushing of waste lithium iron phosphate batteries by setting a vibrating screen and an auger feeding conveyor, improves crushing efficiency, and facilitates subsequent processing.

Description

A recycling and crushing device for waste lithium iron phosphate battery

technical field

The invention relates to the technical field of waste batteries, in particular to a recycling and crushing device for waste lithium iron phosphate batteries.

Background technique

Lithium iron phosphate battery is a lithium ion battery that uses lithium iron phosphate as the positive electrode material and carbon as the negative electrode material. It has high working voltage, high energy density, long cycle life, good safety performance, low self-discharge rate, and no memory effect. The advantages. With the continuous increase in the use of lithium iron phosphate batteries, a large number of waste lithium iron phosphate batteries have been produced. Therefore, it is necessary to recycle waste lithium iron phosphate batteries. The recycling of waste lithium iron phosphate batteries has the advantages of reducing environmental pollution, reducing costs, and saving resources. However, in the actual recycling process, there are also the following problems:

1. When recycling waste lithium iron phosphate batteries, it is first necessary to crush plastics such as shells and separators of waste lithium iron phosphate batteries through a crushing device. The packaging of lithium iron phosphate batteries is relatively strong. The crushing of iron-lithium batteries affects the crushing efficiency and makes it difficult to realize material classification and recycling;

2. When the existing crushing device is unloading, it is easy to cause waste and old lithium iron phosphate batteries to accumulate, and the waste and old lithium iron phosphate batteries cannot be evenly distributed on the crushing tube, which will cause damage to the crushing tube; as CN212142920U discloses a waste and old iron phosphate High-efficiency crushing device for lithium battery recycling. The secondary crushing of waste lithium iron phosphate batteries can make the batteries smaller. However, when waste lithium iron phosphate batteries are unloaded from the feed port, they may accumulate between the crushing tubes, affecting Crushing efficiency, even damage the crushing tube.

Contents of the invention

The invention provides a recycling and crushing device for waste lithium iron phosphate batteries. The waste lithium iron phosphate batteries will be screened by a vibrating screen after undergoing the first crushing through the crushing assembly, and the crushed batteries with unqualified sizes will be transported by a feeder. Re-crushing improves the passing rate of crushing and is conducive to subsequent processing; a reciprocating unloading box is set above the crushing components so that waste lithium iron phosphate batteries fall evenly between the crushing components to avoid accumulation and improve crushing efficiency. Protect broken components.

The solution of the present invention to solve the above-mentioned technical problems is as follows: a device for recovering and crushing waste lithium iron phosphate batteries, comprising a box body, the top of the box body is provided with a feeding port, and the bottom of the box body is provided with a feeding port. A crushing assembly is provided in the box, and the crushing assembly includes symmetrically arranged first crushing tubes and second crushing tubes, both ends of the first crushing tube and the second crushing tube are rotatably mounted on the inner wall of the box Above, a vibrating sieve is arranged below the crushing assembly, and the vibrating sieve is installed inclined downward in the box, and an auger feeding conveyor is vertically arranged on one side of the box, and the auger feeding and conveying The lower part of the machine has a feeding port, the lower end of the vibrating screen protrudes from the side wall of the box and communicates with the feeding port, the upper part of the auger feeding conveyor is provided with a feeding pipe, and the outlet of the feeding pipe It is located above the feeding port of the box body.

The waste lithium iron phosphate battery falls from the feeding port of the box onto the first crushing tube and the second crushing tube, and the first crushing tube and the second crushing tube are driven to rotate and crush Battery, after primary crushing, the battery falls on the vibrating sieve for screening; the battery waste with a qualified crushed size is discharged from the discharge port, and the battery waste with an unqualified crushed size is transported by the auger feeding conveyor, and then discharged from the discharge port The pipe is discharged and falls onto the first crushing pipe and the second crushing pipe for further crushing until the crushing size is qualified.

Preferably, the transmission assembly includes a first motor, the output end of the first motor is connected to a connecting shaft, a driving gear is installed on the connecting shaft, the driving gear meshes with a transmission gear, and the driving gear and the The transmission gear is installed on the outer wall of the box, the other end of the connecting shaft passes through the outer wall of the box and is connected to the first crushing pipe, and the second crushing pipe is connected to the transmission gear through a connecting column .

The first crushing tube is driven by the first motor, the first motor drives the driving gear, the driving gear drives the transmission gear, and the second crushing tube is driven by the transmission gear.

Preferably, the vibrating sieve includes a vibrating sieve tray inclined downwards, a vibrating machine is arranged on the bottom surface of the vibrating sieve tray, elastic support seats are correspondingly arranged on the four corners of the bottom surface of the vibrating sieve tray, and the elastic support seats are fixed on on the inner wall of the box.

The elastic support seat is used to reduce vibration transmission when the vibrator is working, avoid box vibration, and keep the box stable.

Preferably, the elastic support seat includes a connection block, the connection block is fixed on the inner wall of the box, a circular hole is opened on the connection block, a connecting rod is inserted into the circular hole, and one end of the connecting rod is fixedly connected The other end of the vibrating sieve tray is fixed with a limiting block, the connecting rod is provided with a limiting plate, the connecting rod is covered with a spring, and the spring is located between the limiting plate and the connecting block.

The connecting block is fixed on the side wall of the box body, the vibrating machine will drive the vibrating screen and the connecting rod, and the connecting rod will move up and down in the round hole of the connecting block. For vibration transmission, the limit plate is to limit the spring position setting, and the limit block is set to prevent the connecting rod from falling off from the connecting block during vibration.

Preferably, the vibrating sieve tray includes a sieve plate and a slide-off plate; the width of the slide-off plate gradually decreases from top to bottom, and baffle plates are arranged on both sides of the sieve plate and the slide-off plate, and the two baffle plates and the The sliding plate is matched with the falling end of the vibrating sieve plate to form a material drop opening; the sieve plate is provided with a plurality of sieve holes.

The wide and narrow design of the sliding plate helps to push the battery waste into the auger feeding conveyor, and the broken battery waste falls from the sieve hole.

Preferably, the auger feeding conveyor includes a sleeve, and the sleeve is arranged on the outer wall of the box through a fixing frame; the auger feeding machine is installed in rotation in the sleeve, and the top of the sleeve A motor box is provided, and a second motor is arranged in the motor box, and the output end of the second motor is connected with the auger feeder;

The feeding pipe is arranged on the upper part of the sleeve, and the feeding pipe is arranged inclined downward; the feeding port is opened on the lower wall of the sleeve.

The auger feeder is driven by the second motor to transfer the crushed battery waste of unqualified size from the feed port of the sleeve to the discharge tube of the sleeve, and the broken battery is discharged from the discharge tube and falls on the crushing assembly for re-crushing .

Preferably, the feeding port of the box body is provided with a lower material box, the inlet of the lower material box is flush with the top of the material feeding port of the box body, and the bottom end of the lower material box is fixed with a reciprocating assembly.

The reciprocating component is driven to slide back and forth in the box of the lower material box, and the waste lithium iron phosphate battery discharged from the lower material box can evenly fall on the first crushing tube and the second crushing tube, avoiding the waste of phosphoric acid The accumulation of iron-lithium batteries causes damage to the broken rod.

Preferably, the reciprocating assembly includes a limit rod and a reciprocating lead screw arranged parallel to each other, and a first fixed block and a second fixed block fixed at the bottom of the lower material box; both ends of the limit rod are fixed to the The inner wall of the box body, one end of the reciprocating lead screw is connected to the inner wall of the box body in rotation, and the other end passes through the box body and is connected with a driven gear, and the driven gear meshes with the transmission gear; The first fixed block and the second fixed block are respectively arranged on the limit rod and the reciprocating lead screw.

The reciprocating screw is driven by the driven gear to start rotating, driving the first fixed block and the second fixed block to reciprocate, so that the material box slides back and forth on the box body along with the first fixed block and the second fixed block .

Preferably, a mounting frame is fixed on the outer wall of the box, the first motor is installed on the mounting frame, and supporting legs are provided at four corners of the outer wall of the box.

The installation frame provides a supporting point for the first motor, which helps the first motor to work stably.

Preferably, a rectangular groove is opened on the side wall of the box, and the lower end of the vibrating screen protrudes from the rectangular groove and communicates with the feed inlet.

The beneficial effects of the present invention are as follows:

1. In the present invention, the waste lithium iron phosphate battery is evenly dropped between the first crushing tube and the second crushing tube by setting the unloading box, which effectively solves the problem of waste lithium iron phosphate battery accumulation during blanking and avoids the broken tube damage.

2. The present invention can effectively screen the broken pieces by setting the vibrating screen, so that the waste lithium iron phosphate batteries that meet the crushing requirements are discharged from the discharge port provided below, avoiding the mixing of incomplete broken waste materials, and omitting the process of manual screening , improve quality and efficiency.

3. The present invention recycles waste lithium iron phosphate batteries that do not meet the crushing requirements by setting the auger feeding conveyor, and the waste lithium iron phosphate batteries that do not meet the crushing requirements are discharged from the rectangular slot into the auger feeding conveyor, and are discharged from the discharge port The discharge enters the box again for secondary crushing, which effectively improves the crushing efficiency and ensures the subsequent classification and recycling.

The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and implement them according to the contents of the description, the preferred embodiments of the present invention and accompanying drawings are described in detail below. The specific embodiment of the present invention is given in detail by the following examples and accompanying drawings.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

FIG. 1 is a schematic diagram of a three-dimensional structure of a waste lithium iron phosphate battery recycling and crushing device provided by an embodiment of the present invention;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the sectional view of Fig. 1;

Fig. 4 is the structural representation of vibrating sieve dish in the embodiment of the present invention;

Fig. 5 is a structural schematic view of the bottom of the vibrating sieve tray in an embodiment of the present invention;

Fig. 6 is a schematic structural view of the unloading box in the embodiment of the present invention.

In the accompanying drawings, the list of parts represented by each label is as follows:

1. Box body; 2. Feeding port; 3. Discharging port; 4. First crushing pipe; 5. Second crushing pipe; 6. Feed port; 7. Discharging pipe; 8. First motor; 9 , driving gear; 10, transmission gear; 11, vibrating sieve plate; 12, vibrating machine; 13, connecting rod; 14, limiting plate; 15, spring; 16, connecting block; 17, limiting block; 18, screen hole ;19, sieve plate; 20, sliding plate; 21, baffle plate; 22, blanking port; 23, sleeve; 24, fixed frame; 25, auger feeder; 26, motor box; 27, second motor 28, feeding box; 29, limit rod; 30, reciprocating screw; 31, first fixed block; 32, second fixed block; 33, driven gear; 34, mounting frame; 35, support leg; 36 , rectangular slot; 100, vibrating screen; 110, elastic support seat; 200, auger feeding conveyor; 300, reciprocating component.

Detailed ways

The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

Working principle of the present invention: start the first motor 8, the second motor 27 and the vibration machine 12, the first motor 8 drives the driving gear 9 to rotate, the driving gear 9 drives the transmission gear 10 and the driven gear 33 to rotate, and the first motor 8 Drive the first crushing tube 4 to rotate, the transmission gear 10 drives the second crushing tube 5 to rotate, the driven gear 33 drives the reciprocating screw 30 to rotate, and the reciprocating screw 30 rotates to make the feeding box 28 reciprocate in the box body 1, and then Pour the waste lithium iron phosphate battery into the blanking box 28, through the blanking box 28, the waste lithium iron phosphate battery is evenly dropped between the first crushing tube 4 and the second crushing tube 5, avoiding the waste lithium iron phosphate battery The accumulation is difficult to crush, and the waste lithium iron phosphate battery is rolled and crushed through the first crushing tube 4 and the second crushing tube 5. The crushed waste lithium iron phosphate battery falls onto the vibrating sieve tray 11, and the vibrating sieve tray 11 is vibrated. Make the lithium iron phosphate battery waste that meets the specifications fall through the sieve hole 18, and then discharge from the discharge port 3, and the bulk lithium iron phosphate battery waste enters the sleeve 23 through the vibration of the vibrating sieve plate 11, and passes through the set in the sleeve 23. The auger feeding conveyor 200 is lifted periodically, and the unloading box 28 is dropped into the unloading box 28 after it is at the interface of the unloading pipe 7 of the sleeve 23, and secondary crushing is carried out through the unloading box 28, again avoiding It reduces the accumulation of waste lithium iron phosphate batteries, effectively improves the crushing rate, and ensures the subsequent sorting and recycling.

Example

As shown in Figures 1-3, the present invention provides a waste lithium iron phosphate battery recycling and crushing device. The four corners of the outer wall of the box body 1 are provided with support legs 35, the top is provided with a feeding port 2, and the bottom is provided with a feeding port 3. A crushing assembly is provided inside the box body 1, and the crushing assembly includes symmetrically arranged first crushing tubes 4 and second crushing tubes 5, both ends of which are rotatably mounted on the inner wall of the box body 1. A mounting frame 34 is fixed on the outer wall of the box body 1, and a first motor 8 is installed on the mounting frame 34. The output end of the first motor 8 is connected to a connecting shaft, and a driving gear 9 is installed on the connecting shaft, and the driving gear 9 is meshed with a transmission gear 10. , the driving gear 9 and the transmission gear 10 are installed on the outer wall of the casing 1, the other end of the connecting shaft passes through the outer wall of the casing 1 and is connected with the first crushing pipe 4, and the second crushing pipe 5 is connected with the transmission gear 10 through the connecting column.

A vibrating sieve 100 is arranged below the crushing assembly, and the vibrating sieve 100 is installed inclined downward in the box body 1. The vibrating sieve 100 includes a vibrating sieve pan 11 inclined downward. It includes a sieve plate 19 and a slide-off plate 20, the sieve plate 19 and the slide-off plate 20 are connected; the width of the slide-off plate 20 gradually decreases from top to bottom, and baffles 21 are arranged on both sides of the sieve plate 19 and the slide-off plate 20, two baffles 21 Cooperate with the sliding plate 20 to form a material drop opening 22 at the falling end of the vibrating sieve tray 11; a plurality of sieve holes 18 are opened on the sieve plate 19.

One side of the box body 1 is vertically provided with an auger feeding conveyor 200, and the sleeve 23 of the auger feeding conveyor 200 is arranged on the outer wall of the box body 1 through a fixing frame 24; the upper part of the sleeve 23 is provided with a feeding pipe 7 , the feeding pipe 7 is inclined downward, and the outlet is located above the feeding port 2 of the box body 1; the lower wall of the sleeve 23 is provided with a feeding port 6, and the lower end of the vibrating screen 100 extends from the rectangular groove 36 opened on the side wall of the box body 1. Out and communicated with the feed port 6; an auger feeder 25 is installed rotating inside the sleeve 23, a motor box 26 is arranged on the top of the sleeve 23, a second motor 27 is arranged in the motor box 26, and the output of the second motor 27 End is connected with auger feeder 25.

When the first motor 8 is started, the driving gear 9 and the transmission gear 10 respectively drive the first crushing tube 4 and the second crushing tube 5 to rotate, and the waste lithium iron phosphate battery is poured from the feeding port 2 of the box body 1 and falls on the Between the first crushing pipe 4 and the second crushing pipe 5, the first crushing is carried out, and the waste materials with qualified size fall to the discharge port 3 through the screen hole 18, and the waste materials with unqualified size slide into the sleeve 23 from the vibrating sieve tray 11 The feeding port 6 is transported up to the discharge pipe 7 of the sleeve 23 through the auger feeder 25, and falls between the first crushing pipe 4 and the second crushing pipe 5 again for the second crushing until the waste The size is qualified.

As shown in Figure 4-5, the four corners of the bottom surface of the vibrating sieve tray 11 are correspondingly provided with an elastic support seat 110, the elastic support seat 110 includes a connection block 16, the connection block 16 is fixed on the inner wall of the box body 1, and a round hole is opened on the connection block 16, A connecting rod 13 is inserted into the circular hole, one end of the connecting rod 13 is fixedly connected to the vibrating sieve pan 11, the other end is fixed with a limit block 17, the connecting rod 13 is provided with a limiting plate 14, and the connecting rod 13 is covered with a spring 15, and the spring 15 is located between the limit plate 14 and the connecting block 16.

As shown in Figure 6, the feeding port 2 of the box body 1 is provided with a lower material box 28, the inlet of the lower material box 28 is flush with the top of the material feeding port 2 of the box body 1, and the bottom end of the lower material box 28 is provided with a reciprocating assembly 300, the reciprocating assembly 300 includes a limiting rod 29 and a reciprocating lead screw 30 parallel to each other, and a first fixed block 31 and a second fixed block 32 fixed at the bottom of the lower material box 28; the two ends of the limiting rod 29 are fixed to the box body 1, one end of the reciprocating lead screw 30 is rotatably connected to the inner wall of the box body 1, and the other end passes through the box body 1 and is connected with a driven gear 33, and the driven gear 33 meshes with the transmission gear 10; the first fixed block 31 and the second The fixed block 32 is respectively arranged on the limiting rod 29 and the reciprocating lead screw 30 .

The reciprocating lead screw 30 is driven by the driven gear 33 to start rotating, and drives the first fixed block 31 and the second fixed block 32 to reciprocate, so that the blanking box 28 moves along with the first fixed block 31 and the second fixed block 32 in the box. Slide back and forth on body 1. The waste lithium iron phosphate battery can be evenly dropped on the first crushing tube 4 and the second crushing tube 5 after being discharged from the blanking box 28, so as to avoid the problem of damage to the crushing rod due to the accumulation of waste and old lithium iron phosphate batteries.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form; all those skilled in the art can smoothly implement the present invention as shown in the attached drawings and the above descriptions. However, any equivalent change, modification and evolution made by those skilled in the art without departing from the scope of the technical solution of the present invention by utilizing the technical content disclosed above are all equivalent implementations of the present invention Example; at the same time, all changes, modifications and evolutions made to the above embodiments according to the substantive technology of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims (10)

1. A recovery and crushing device for waste lithium iron phosphate batteries, characterized in that: it comprises a casing (1), the top of the casing (1) is provided with a feeding port (2), and the top of the casing (1) A discharge port (3) is opened at the bottom, and a crushing assembly is arranged inside the box (1), and the crushing assembly includes symmetrically arranged first crushing pipes (4) and second crushing pipes (5). Both ends of the first crushing pipe (4) and the second crushing pipe (5) are rotatably installed on the inner wall of the box (1), and a vibrating screen (100) is arranged below the crushing assembly, and the vibrating screen ( 100) It is installed inclined downwards in the box body (1), and an auger feeding conveyor (200) is vertically arranged on one side of the box body (1), and the lower part of the auger feeding conveyor (200) Open the feeding port (6), the lower end of the vibrating screen (100) protrudes from the side wall of the box (1) and communicates with the feeding port (6), and the upper part of the auger feeding conveyor (200) A feeding pipe (7) is provided, and the outlet of the feeding pipe (7) is located above the feeding port (2) of the box body (1). 2. A waste lithium iron phosphate battery recycling and crushing device according to claim 1, characterized in that: a transmission assembly is also provided on the outer wall of the box (1), and the transmission assembly includes a first motor (8) , the output end of the first motor (8) is connected with a connecting shaft, and a driving gear (9) is installed on the connecting shaft, and the driving gear (9) is meshed with a transmission gear (10), and the driving gear ( 9) and the transmission gear (10) are installed on the outer wall of the box (1), and the other end of the connecting shaft passes through the outer wall of the box (1) and is connected with the first crushing pipe (4) , the second crushing pipe (5) is connected with the transmission gear (10) through a connecting column. 3. A recycling and crushing device for waste lithium iron phosphate batteries according to claim 1, characterized in that: the vibrating sieve includes a vibrating sieve tray (11) inclined downwards, and the bottom surface of the vibrating sieve tray (11) is A vibrator (12) is provided, and the four corners of the bottom surface of the vibrating sieve tray (11) are correspondingly provided with elastic support seats (110), and the elastic support seats (110) are fixed on the inner wall of the box body (1). 4. A waste lithium iron phosphate battery recycling and crushing device according to claim 3, characterized in that: the elastic support seat (110) includes a connecting block (16), and the connecting block (16) is fixed on the On the inner wall of the box body (1), a circular hole is opened on the connecting block (16), and a connecting rod (13) is inserted into the circular hole, and one end of the connecting rod (13) is fixedly connected to the vibrating sieve tray (11) , the other end is fixed with a limiting block (17), the connecting rod (13) is provided with a limiting plate (14), the connecting rod (13) is sleeved with a spring (15), and the spring (15) is located at Between the limit plate (14) and the connection block (16). 5. A kind of waste lithium iron phosphate battery recycling and crushing device according to claim 3, characterized in that: the vibrating sieve tray (11) comprises a sieve plate (19) and a sliding plate (20), and the sieve plate ( 19) is connected with the sliding plate (20); the width of the sliding plate (20) gradually decreases from top to bottom, and baffle plates (21) are arranged on both sides of the sieve plate (19) and the sliding plate (20). The baffle plate (21) and the sliding plate (20) are matched at the falling end of the vibrating sieve tray (11) to form a blanking port (22); the sieve plate (19) is provided with a plurality of sieves hole (18). 6. A waste lithium iron phosphate battery recycling and crushing device according to claim 1, characterized in that: the auger feeding conveyor (200) includes a sleeve (23), and the sleeve (23) passes through The fixed frame (24) is arranged on the outer wall of the box body (1); an auger feeder (25) is installed in the sleeve (23) for rotation, and a motor box ( 26), the motor box (26) is provided with a second motor (27), and the output end of the second motor (27) is connected to the auger feeder (25); The feeding pipe (7) is arranged on the upper part of the sleeve (23), and the feeding pipe (7) is arranged inclined downward; the feeding port (6) is provided on the lower wall of the sleeve (23). 7. A waste lithium iron phosphate battery recycling and crushing device according to claim 2, characterized in that: the feeding port (2) of the box body (1) is provided with a feeding box (28), and the lowering box (28) The inlet of the feed box (28) is flush with the top of the feed opening (2) of the box body (1), and a reciprocating assembly (300) is arranged at the bottom of the feed box (28). 8. A waste lithium iron phosphate battery recycling and crushing device according to claim 7, characterized in that: the reciprocating assembly (300) includes a limit rod (29) and a reciprocating lead screw (30) arranged in parallel to each other, and The first fixed block (31) and the second fixed block (32) fixed on the bottom of the lower material box (28); the two ends of the limit rod (29) are fixed on the inner wall of the box (1) , one end of the reciprocating lead screw (30) is rotatably connected to the inner wall of the box (1), and the other end passes through the box (1) and is connected to a driven gear (33), and the driven gear (33 ) meshes with the transmission gear (10); the first fixed block (31) and the second fixed block (32) are respectively arranged on the limit rod (29) and the reciprocating lead screw (30). 9. A waste lithium iron phosphate battery recycling and crushing device according to claim 2, characterized in that: the outer wall of the box (1) is fixed with a mounting frame (34), and the mounting frame (34) is mounted with the Referring to the first motor (8), the four corners of the outer wall of the box (1) are provided with supporting legs (35). 10. A waste lithium iron phosphate battery recycling and crushing device according to claim 1, characterized in that: the side wall of the box (1) is provided with a rectangular groove (36), and the lower end of the vibrating screen (100) is formed by The rectangular groove (36) protrudes and communicates with the feed inlet (6).

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