Electrified lithium battery double-group tearing device

Abstract

The utility model discloses a double-group tearing device for charged lithium batteries, and relates to the technical field of waste lithium battery recovery. Upper and lower gravity wind shields are arranged in the middle of the channel; an upper negative pressure communicating pipe and a lower negative pressure communicating pipe at the upper part and the lower part of the feeding box are respectively communicated with a negative pressure air draft pipeline, and the negative pressure air draft pipeline is communicated with an exhaust fan; a double-group type tearing machine is arranged below the channel, the double-group type tearing machine is composed of a large cutterhead group and a small cutterhead group, the large cutterhead group comprises a plurality of large cutterheads, and the small cutterhead group comprises a plurality of small cutterheads; the large cutterhead and the small cutterhead are separated by a middle partition plate and are used for respectively tearing large materials and small materials; nitrogen injection ports are connected to the upper part and the lower part of the double-group type tearing machine, nitrogen is injected, the nitrogen content in the shell is increased, and the oxygen content in the equipment is controlled to be below 3%; and the star-shaped closed-air discharger is mounted above the discharge port to isolate air. The lithium battery tearing device has the beneficial effects that various charged lithium batteries can be torn at one time at the same time, and the working efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of waste lithium battery recycling, and further relates to a charged lithium battery double-group tearing device. Background Art

[0002] Lithium batteries are widely used in today's society, so the technology for recycling waste lithium batteries has also developed rapidly. The lithium battery recycling process needs to be crushed, which involves crushing equipment to tear all kinds of charged lithium batteries at once. The defects of the tearing machine in the prior art are: lithium batteries come in various specifications, and the recycled lithium batteries are often charged; and the conventional tearing machine, because the distance between the inner and outer blades of the large blade is large, the size of small pieces of material is smaller than the distance between the blades, and they will directly leak through, and cannot play a crushing role; on the contrary, the distance between the inner and outer blades of the small blade is small, and large pieces of material will be supported on the top of the blade teeth and cannot enter, and it also cannot play a crushing role; therefore, the tearing machine cannot tear all kinds of charged lithium batteries at once at the same time, and the working efficiency is low.

[0003] Based on this, the utility model inventor has developed a new type of "charged lithium battery double-group tearing device". Utility Model Content

[0004] The utility model aims to provide a double-group tearing device for charged lithium batteries, which can tear various charged lithium batteries at one time.

[0005] The purpose of the utility model is achieved through the following solutions:

[0006] The charged lithium battery double-group tearing device has a feed port on the feed box, which is characterized in that: a channel is connected to the bottom of the feed box, the channel is inclined, and a star-shaped air-tight feeder is arranged on the upper part of the channel; a gravity wind shield is arranged in the middle of the channel; an upper negative pressure connecting pipe and a lower negative pressure connecting pipe are respectively arranged at the upper and lower parts of the feed box, and the upper negative pressure connecting pipe and the lower negative pressure connecting pipe are respectively connected to the negative pressure exhaust pipe, and the negative pressure exhaust pipe is connected to the exhaust fan for extracting the volatile gas of the electrolyte;

[0007] The double-group tearing machine is located below the channel. The double-group tearing machine is composed of a knife disc group. The knife disc group is divided into two groups, inner and outer. The number of the inner and outer groups is the same or equivalent. The inner and outer groups of adjacent knife discs are staggered. The inner group of knife discs is placed on the knife disc shaft A, and the outer group of knife discs is placed on the knife disc shaft B.

[0008] The double-group tearing machine is connected with nitrogen injection ports at the top and bottom. Nitrogen is injected to increase the nitrogen content in the shell and control the oxygen content inside the equipment to less than 3%;

[0009] A discharge port is arranged at the bottom of the double-group tearing machine, and a star-shaped air-blocking discharger is arranged above the discharge port to isolate the air.

[0010] further:

[0011] The channel has an inclination angle of 30-60 degrees with the horizontal.

[0012] There are two gravity wind shields, namely, upper and lower gravity wind shields; the lower negative pressure connecting pipe is arranged on the channel between the upper and lower gravity wind shields.

[0013] The upper negative pressure connecting pipe and the lower negative pressure connecting pipe are respectively provided with a regulating valve A and a regulating valve B.

[0014] The feed box is divided into a large material feed box and a small material feed box; the channel is divided into a large material channel and a small material channel, and the cutter disc group is divided into a large cutter disc group and a small cutter disc group; the large material feed box is connected to the large material channel, and the small material feed box is connected to the small material channel; the large material channel leads to the large cutter disc group, and the small material channel leads to the small cutter disc group; the large cutter disc group tears large pieces of material, and the small cutter disc group tears small pieces of material.

[0015] The large material channel is provided with two gravity wind shields, namely, upper and lower gravity wind shields; the small material channel is provided with two gravity wind shields, namely, upper and lower gravity wind shields; a lower negative pressure connecting pipe is provided on the channel between the upper and lower gravity wind shields, and the lower negative pressure connecting pipe connects the large material channel and the small material channel at the same time.

[0016] The large blade disc group includes M large blade discs, and the small blade disc group includes N small blade discs; the M large blade discs of the large blade disc group are divided into two groups, inner and outer, and the N small blade discs of the small blade disc group are divided into two groups, inner and outer; the large blade discs of the inner group and the small blade discs of the inner group share a blade disc axis A; the large blade discs of the outer group and the small blade discs of the outer group share a blade disc axis B.

[0017] The thickness of the large blade disc is 30mm-40mm, and the thickness of the small blade disc is 10mm-20mm.

[0018] A boss is provided in the middle of the small knife disc.

[0019] The beneficial effect of the utility model is that the device can tear large blocks with a thickness greater than or equal to 5 cm and small blocks with a thickness less than 5 cm at the same time, so it is suitable for tearing various charged lithium batteries at one time at the same time, and the working efficiency is high.

[0020] In order to enable those skilled in the art to better understand the present invention and to make the above-mentioned purposes, features and advantages of the present invention more obvious and understandable, the present invention is further described in detail below in conjunction with embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the utility model. Figure 2 for Figure 1 Side view of Figure 3 This is a schematic diagram of the structure of the large knife disc of the utility model. Figure 4 This is a schematic diagram of the structure of the small knife disc of the utility model. Figure 5 It is a schematic diagram of the structure of the double-group tearing machine of the utility model.

[0022] In the figure: feed box 1, feed port 2, negative pressure exhaust duct 3, star-shaped air-tight feeder 4, gravity wind shield 5, large knife disc 6, small knife disc 7, boss 71, nitrogen injection port 8, star-shaped air-tight discharger 9, discharge port 10, double-group tearing machine 11, middle partition 12, upper negative pressure connecting pipe 13, lower negative pressure connecting pipe 14, regulating valve A15, regulating valve B16, channel 17, knife disc shaft A18, knife disc shaft B19. DETAILED DESCRIPTION

[0023] like Figure 1 , 2 As shown in , 3, 4, and 5, the charged lithium battery double-group tearing device includes three major systems:

[0024] ① Anaerobic feeding vacuum system: A feed port 2 is provided on the feed box 1, and a star-shaped air-tight feeder 4 has 5-8 fan blades, which are installed on the upper part of the channel 15 below the feed port 2; the motor and the reducer provide power to drive the star-shaped air-tight feeder 4 to rotate. An upper and lower gravity wind shield plates 5 are provided in the middle of the channel 15, and the gravity wind shield plates 5 can rotate around the installation axis. An upper negative pressure connecting pipe 13 and a lower negative pressure connecting pipe 14 are respectively provided at the upper and lower parts of the feed box 1. The upper negative pressure connecting pipe 13 and the lower negative pressure connecting pipe 14 are respectively connected to the negative pressure exhaust pipe 3, and the negative pressure exhaust pipe 3 is connected to the exhaust fan for extracting volatile gases from the electrolyte; regulating valves A15 and B16 are respectively provided on the upper negative pressure connecting pipe 13 and the lower negative pressure connecting pipe 14. The lower negative pressure connecting pipe 14 is provided on the channel 15 between the upper and lower gravity wind shield plates 5;

[0025] ② Tearing system: A channel 17 is connected to the bottom of the feed box 1. The channel 17 is inclined with an angle of 30-60 degrees (further 35-55 degrees) to the horizontal. A star-shaped closed-air feeder 9 is arranged on the upper part of the channel 17; the feed box 1 and the channel 17 are divided into two parts, the feed box 1 is divided into a large material feed box and a small material feed box, large pieces of material (thickness greater than or equal to 5 cm, length and width are not restricted) enter the large material feed box, and small pieces of material (thickness less than 5 cm, length and width are not restricted) enter the small material feed box; large and small pieces of material can be fed at the same time without affecting each other; the channel 17 is divided into a large material channel and a small material channel, the large material feed box is connected to the large material channel, the small material feed box is connected to the small material channel, the large material channel leads to the large knife disc 6, and the small material channel leads to the small knife disc 7. The double-group tearing machine 11 is located below the passage 17. The double-group tearing machine 11 is composed of a large knife disc group and a small knife disc group. The large knife disc group has 27 large knife discs 6, and the small knife disc group has 55 small knife discs 7. The number can be adjusted according to the size of the tearing machine. The thickness of the large knife disc 6 is 30mm-40mm, and the thickness of the small knife disc 7 is 10mm-20mm. The small knife disc 7 is relatively thin, and a boss 71 is added in the middle of the knife disc, which is cross-locked during installation to increase the strength of the knife disc. The M large blade discs of the large blade disc group are divided into two groups, the inner and outer groups, with the same or equivalent number (one difference), such as: the inner / outer group is M / 2-0.5, the outer / inner group is M / 2+0.5, and the inner and outer groups of adjacent blade discs are staggered; the N small blade discs of the small blade disc group are divided into two groups, the inner and outer groups, with the same or equivalent number (one difference), such as: the inner / outer group is N / 2-0.5, the outer / inner group is N / 2+0.5, and the inner and outer groups of adjacent blade discs are staggered; the large blade disc of the inner group and the small blade disc of the inner group share a blade disc shaft A18; the large blade disc of the outer group and the small blade disc of the outer group share a blade disc shaft B19; the inner hole of the blade is a regular hexagonal hole, and the transmission shaft is a regular hexagonal prism to prevent slipping, which can better transmit power than traditional cylinders. The large blade disc group and the small blade disc group are separated by a middle partition 12 to tear large and small blocks of material respectively. The double-group tearing machine 11 is connected to nitrogen injection ports 8 at the top and bottom, and nitrogen is injected to increase the nitrogen content in the shell, and the oxygen content inside the equipment is controlled below 3%. The rotation of the double-group tearing machine 11 is powered by a motor and a reducer;

[0026] ③ Anaerobic discharging system: The star-shaped air-tight discharging device 9 is installed above the discharging port 10 to isolate the air and achieve anaerobic discharging. The star-shaped air-tight discharging device 9 is driven to rotate by a motor.

[0027] Explanation of the operating principle of the equipment: Before the equipment is put into operation, nitrogen is injected into the upper and lower parts of the double-group tearing machine 11 through the nitrogen injection port 8 to make the interior reach an oxygen-deficient state with an oxygen content of less than 3%, so as to ensure the stability of the volatile gas of the lithium battery electrolyte, so that the double-group tearing machine 11 can tear the charged lithium battery. The charged lithium battery enters from the feed port 2, slides down into the star-shaped closed air feeder 4, and during the rotation of the star-shaped closed air feeder 4, the charged lithium battery is discharged from the lower port of the star-shaped closed air feeder 4 to complete the closed air feeding. The middle partition 12 separates the materials, and the large pieces of materials enter the channel of the large knife disc 6, and the small pieces of materials enter the channel of the small knife disc 7. The material slides down to the gravity windshield 5. When it reaches a certain weight, the gravity windshield 5 opens. After the material slides down, the gravity windshield 5 closes in time to complete the closed air feeding. Similarly, after passing through the second gravity windshield 5, the secondary closed air feeding is completed. The material slides down and enters the double-group tearing machine 11, which rotates to tear the material. After being torn, the material falls to the star-shaped air-tight discharger 9, which drives the star-shaped air-tight discharger 9 to rotate, and drives the material to be discharged from the lower port of the air-tight discharger to complete the air-tight discharge work. The material is finally discharged from the discharge port 10 for subsequent processing. When the lithium battery is charged and torn, electrolyte volatile gas will appear, and the gas is collected and discharged through the negative pressure exhaust duct 3. A small amount of electrolyte volatile gas leaked from the upper part of the star-shaped air-tight feeder 4 is also collected and discharged through the negative pressure exhaust duct 3, and discharged into the corresponding gas treatment system for subsequent processing. Regulating valve A15 and regulating valve B16 adjust the wind negative pressure according to demand.

[0028] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A double-group tearing device for charged lithium batteries, with a feed port provided on the feed box, characterized in that: A channel is connected to the bottom of the feed box, the channel is inclined, and a star-shaped air-tight feeder is arranged on the top of the channel; a gravity wind shield is arranged in the middle of the channel; an upper negative pressure connecting pipe and a lower negative pressure connecting pipe are arranged at the top and bottom of the feed box respectively, and the upper negative pressure connecting pipe and the lower negative pressure connecting pipe are connected to the negative pressure exhaust pipe respectively, and the negative pressure exhaust pipe is connected to the exhaust fan to extract the volatile gas of the electrolyte; The double-group tearing machine is located below the channel. The double-group tearing machine is composed of a knife disc group. The knife disc group is divided into two groups, inner and outer. The number of the inner and outer groups is the same or equivalent. The inner and outer groups of adjacent knife discs are staggered. The inner group of knife discs is placed on the knife disc shaft A, and the outer group of knife discs is placed on the knife disc shaft B. The double-group tearing machine is connected with nitrogen injection ports at the top and bottom. Nitrogen is injected to increase the nitrogen content in the shell and control the oxygen content inside the equipment to less than 3%; A discharge port is arranged at the bottom of the double-group tearing machine, and a star-shaped air-blocking discharger is arranged above the discharge port to isolate the air.

2. The charged lithium battery double-group tearing device according to claim 1, characterized in that: The channel has an inclination angle of 30-60 degrees with the horizontal.

3. The charged lithium battery double-group tearing device according to claim 1, characterized in that: There are two gravity wind shields, namely, upper and lower gravity wind shields; the lower negative pressure connecting pipe is arranged on the channel between the upper and lower gravity wind shields.

4. The charged lithium battery double-group tearing device according to claim 1, characterized in that: The upper negative pressure connecting pipe and the lower negative pressure connecting pipe are respectively provided with a regulating valve A and a regulating valve B.

5. The charged lithium battery double-group tearing device according to claim 1, characterized in that: The feed box is divided into a large material feed box and a small material feed box; the channel is divided into a large material channel and a small material channel, and the cutter disc group is divided into a large cutter disc group and a small cutter disc group; the large material feed box is connected to the large material channel, and the small material feed box is connected to the small material channel; the large material channel leads to the large cutter disc group, and the small material channel leads to the small cutter disc group; the large cutter disc group tears large pieces of material, and the small cutter disc group tears small pieces of material.

6. The charged lithium battery double-group tearing device according to claim 5, characterized in that: The large material channel is provided with two gravity wind shields, namely, upper and lower gravity wind shields; the small material channel is provided with two gravity wind shields, namely, upper and lower gravity wind shields; a lower negative pressure connecting pipe is provided on the channel between the upper and lower gravity wind shields, and the lower negative pressure connecting pipe connects the large material channel and the small material channel at the same time.

7. The charged lithium battery double-group tearing device according to claim 5, characterized in that: The large blade disc group includes M large blade discs, and the small blade disc group includes N small blade discs; the M large blade discs of the large blade disc group are divided into two groups, inner and outer, and the N small blade discs of the small blade disc group are divided into two groups, inner and outer; the large blade discs of the inner group and the small blade discs of the inner group share a blade disc axis A; the large blade discs of the outer group and the small blade discs of the outer group share a blade disc axis B.

8. The charged lithium battery double-group tearing device according to claim 7, characterized in that: The thickness of the large blade disc is 30mm-40mm, and the thickness of the small blade disc is 10mm-20mm.

9. The charged lithium battery double-group tearing device according to claim 7, characterized in that: A boss is provided in the middle of the small knife disc.

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