A waste battery live crushing and solid-liquid separation system and its application method

Abstract

The present invention belongs to the technical field of waste battery recycling, and specifically relates to a system for live crushing and solid-liquid separation of waste batteries and its application method. The system includes a controller, and also includes a crushing device, a solid-liquid separation device, and a filtering device connected in sequence; the controller connects the crushing device, the solid-liquid separation device, and the filtering device, and controls the start and shut down of the crushing device, the solid-liquid separation device, and the filtering device. The system of the present invention can crush, separate solids and liquids, and filter waste battery particles and electrolytes. It has a high degree of integration. The crushed batteries are temporarily stored in a buffer box. The vibration device can separate the electrolyte from the crushed pieces as much as possible. The shell is surrounded by an inert gas as a protective gas, and real-time feedback is provided through an oxygen concentration detector and a smoke concentration detector to avoid fire and explosion caused by battery short circuits during the live crushing process, so that the electrolyte is efficiently recovered and environmental damage is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of waste battery recycling, and in particular relates to a waste battery live crushing and solid-liquid separation system and an application method thereof. Background Art

[0002] Lithium-ion batteries have the advantages of high operating voltage, high specific energy, small size and light weight, no memory effect, and a wide operating temperature range. They are widely used in production and life as portable mobile power sources. At the same time, with the country's vigorous promotion of electric vehicles, a large number of batteries will face the problem of being scrapped in the future. The recycling rate of waste batteries in my country is relatively low, and a large number of discarded batteries have caused waste of resources and energy and environmental pollution.

[0003] Lithium-ion batteries primarily consist of a casing, positive electrode material, negative electrode material, current collector, separator, and electrolyte. Many of these components contain valuable components worth recycling. Without crushing and disassembling, valuable materials and components from used batteries cannot be recovered. Pre-processing typically requires disassembly and sorting of batteries. Discharging batteries before manual or mechanical disassembly increases the workload.

[0004] In view of this, it is necessary to provide a new process to solve the above problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a system for the live crushing and solid-liquid separation of used batteries and its application method. On the one hand, used batteries can be crushed and disassembled without the need for discharge pretreatment, and on the other hand, the solid-liquid mixture can be better separated, which is safe, environmentally friendly and highly efficient. The technical solution adopted is:

[0006] A system for live crushing and solid-liquid separation of used batteries, comprising a controller, a crushing device, a solid-liquid separation device and a filtering device connected in sequence;

[0007] The crushing device includes a shell, a feed port is arranged at the center of the top of the shell, the feed port is connected to the collection box, a shearing shredder is arranged in the shell, and the bottom of the shell is connected to the buffer box through a discharge pipe;

[0008] The bottom outlet of the buffer tank is connected to the inlet of the solid-liquid separation device, and the solid-liquid separation device includes an outer shell, an inlet is provided in the outer shell, and a first collecting bucket, a second collecting bucket, a filter plate, and a vibration device are provided in the outer shell; the inlet of the solid-liquid separation device is directly opposite the filter plate below, and the inlet is located at the right end of the filter plate (to the right of the center, and an adaptive position is set as needed to facilitate the up and down swinging of the left side of the filter plate); the left end of the filter plate is connected to the second collecting bucket through an inclined plate, and a collection cover is provided below the filter plate, and the right end of the collection cover is connected to the first collecting bucket below the right side of the filter plate; the vibration device is installed below the filter plate and is connected to the filter plate through a connecting rod, and the connecting rod is fixed on both sides of the outer end of the left side of the filter plate.

[0009] A liquid outlet pipe is provided at the bottom end of the first collecting barrel, and the liquid outlet pipe is connected to the filtering device;

[0010] As a further preference, an outlet is provided at the bottom of the second collecting barrel, and an automatic sealing plate is installed at the outlet, so that the broken pieces of waste batteries can be discharged for further processing.

[0011] The controller is connected to the crushing device, the solid-liquid separation device and the filtering device, and controls the start and shut down of the crushing device, the solid-liquid separation device and the filtering device. The crushing device and the solid-liquid separation device are connectable and detachable.

[0012] Preferably, the collecting box and the discharge pipe are funnel-shaped structures, and automatic sealing plates are hinged between the bottom end of the feed port and the crushing device shell, the bottom end of the crushing device shell, the bottom end of the discharge pipe and the buffer box inlet, and the bottom end of the buffer box and the solid-liquid separation device inlet. Each automatic sealing plate is connected to the controller and controlled by the controller.

[0013] Preferably, the crushing device housing has a square structure, with a dry ice spray head disposed at its top, inert gas inlets disposed at the four corners of its bottom, and a first air outlet disposed on the upper side of its housing sidewall. The solid-liquid separation device housing has a square structure, with a dry ice spray head disposed at its top, inert gas inlets disposed at the four corners of its bottom, and a second air outlet disposed on the upper side of its housing sidewall. The dry ice spray head is a shower-type device and is connected to the dry ice spray device via a connecting pipe to provide dry ice.

[0014] Preferably, oxygen concentration detectors are provided at both the first air outlet and the second air outlet.

[0015] Preferably, smoke concentration detectors are provided at both the first air outlet and the second air outlet.

[0016] Preferably, each inert gas inlet is connected to an inert gas supply device through an inlet pipe, and inert gas is introduced as a protective gas.

[0017] Preferably, baffles are set at the right end and front and rear sides of the filter plate, and filter holes are set on the bottom end surface of the filter plate; baffles are set at the front and rear sides of the inclined plate; baffles are set at the left end and front and rear sides of the collecting cover; the height of the baffle is set according to actual needs.

[0018] The right end of the collecting cover is tilted downward to connect to the first collecting barrel, and the liquid outlet pipe is arranged at the center of the bottom end surface of the first collecting barrel, and its bottom end surface is tilted downward to the center, so that the liquid can enter the filter as quickly as possible without any residue.

[0019] Preferably, a movable bearing and two fixed bearings are provided in the solid-liquid separation device, wherein one fixed bearing is installed between the right outer end of the filter plate and the outer shell, and the other fixed bearing is installed on the outer shell below the left side of the filter plate. The movable bearing is installed on the left outer end of the filter plate, and the movable bearing is connected to the fixed bearing on the left side by a support rod, driving the left side of the filter plate to move up and down. When there are fewer battery fragments, the left side of the filter plate can swing up and down slightly under the drive of the vibration device; as the battery fragments continue to fall, the filter plate will slowly tilt to the left under the action of gravity, causing the battery fragments to fall into the second collection bucket through the inclined plate. The highest position of the left side of the filter plate driven by the movable bearing is level with the right side of the filter plate, and the lowest position is level with the left fixed bearing below. The fixed bearing on the left is set to a position lower than the fixed bearing on the right as needed.

[0020] Preferably, the filtering device includes a filter and a filtrate collection box; a filter membrane is arranged in the middle of the filter, and the pore size of the filter membrane is 300 to 600 meshes.

[0021] As a further preference, a filtrate discharge pipe is provided at the bottom end or the side bottom end of the filtrate collection box, and the filtrate discharge pipe is provided with an automatic valve so as to collect the filtrate for further processing.

[0022] The vibrating device can be a variety of vibration modes, such as a gas vibrator, an electromagnetic vibrator, and a hydraulic vibrator.

[0023] An application method of a waste battery live crushing and solid-liquid separation system comprises the following steps:

[0024] (1) Place the charged waste batteries into the collection box, turn on the inert gas supply device, and fill the crushing device shell with inert gas as a protective gas. Set the oxygen concentration threshold K and smoke concentration threshold M detected by the oxygen concentration detector and smoke concentration detector. When the detected oxygen concentration value is less than K and the smoke concentration value is less than M, the crushing work can be started, and the feed amount can be controlled by the automatic sealing plate;

[0025] (2) The controller starts the automatic closing plate, and the charged used batteries in the collection box fall into the shear shredder through the feed port for crushing. The smoke detector detects in real time and transmits the data to the controller. When the smoke concentration is greater than M, the controller starts the dry ice spray head to continuously extinguish the fire in the shear shredder; the oxygen concentration detector detects in real time and transmits the data to the controller. If the oxygen concentration is greater than K, the controller starts the dry ice spray head;

[0026] (3) The crushed waste batteries are discharged from the discharge pipe and fall into the buffer box, and then fall onto the filter plate through the outlet of the buffer box. At this time, the vibration device generates high-frequency vibration to separate the battery fragments from the electrolyte. At the same time, the vibration device causes the crushed waste batteries to move to the left side of the filter plate. The electrolyte falls into the first collection bucket through the collection cover. The battery fragments tilt the filter plate to the left under the action of gravity and the action of the movable bearing and the fixed bearing, and fall into the second collection bucket through the tilted plate; the second collection bucket is provided with an outlet connected to the pyrolysis furnace so that the crushed waste batteries can be further processed; when the filter plate falls onto the crushed waste batteries from the buffer box again, the right side of the filter plate is heavy, and the left side slowly rises, and the vibration filtration continues;

[0027] (4) After the electrolyte enters the first collection barrel, it enters the filtration device through the liquid outlet pipe, and after further separation, it falls into the liquid collection box. A discharge port is set at the bottom side of the liquid collection box to discharge the filtrate.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention provides a live battery crushing and solid-liquid separation system for waste batteries, which can shred, crush, separate solids and liquids, and filter waste battery fragments and electrolytes with high concentration. The inert gas surrounding the shell serves as a protective gas, effectively preventing the existence of gas diffusion dead corners. In addition, real-time feedback is provided through an oxygen concentration detector and a smoke concentration detector. When the detection value is too large, a dry ice spray head is used to reduce the oxygen concentration and extinguish the fire, thereby avoiding fire and explosion caused by battery short circuit during the live crushing process.

[0030] The system of the present invention provides a buffer box in which broken batteries can be temporarily stored. Especially when there are too many broken batteries on the filter plate, the broken batteries falling on the filter plate are reduced to avoid incomplete solid-liquid separation on the filter plate, thereby improving the filtering effect.

[0031] The system of the present invention is provided with a vibration device on the filter plate, which can separate the electrolyte and the broken pieces as much as possible;

[0032] The invention provides an application method of a waste battery live crushing and solid-liquid separation system, which enables the electrolyte to be efficiently recovered, thus not only utilizing resources but also avoiding harm to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a front view of the crushing device of the present invention.

[0034] In the figure, 1. crushing device, 101. shell, 102. feed port, 103. discharge pipe, 104. buffer box, 105. shearing shredder, 106. collection box, 107. automatic sealing plate, 108-1 to 108-4, inert gas inlet, 109-1, 109-2, dry ice spray head, 110, oxygen concentration detector, 111, smoke concentration detector, 112, first air outlet.

[0035] Figure 2 This is a diagram of the internal structure of the solid-liquid separation device and the filtering device of the present invention.

[0036] In the figure, 2, solid-liquid separation device, 3, filtering device, 201, first collecting barrel, 202, second collecting barrel, 203, filter plate, 204, vibration device, 205, inclined plate, 206, collecting cover, 207, liquid outlet pipe, 208, movable bearing, 209, housing, 210, fixed bearing, 211, second air outlet, 212-1 to 212-4, inert gas inlet, 213-1, 213-2, dry ice spray head, 214, oxygen concentration detector, 215, smoke concentration detector, 216, inlet, 217, connecting rod; 301, filter, 302, filter membrane, 303, filtrate collection box. DETAILED DESCRIPTION

[0037] The accompanying drawings are for illustrative purposes only. For those skilled in the art, some well-known structures and their descriptions in the drawings may be omitted, such as the connection between the motor and the controller, and therefore, they should not be understood as limiting the present invention. In order to better illustrate this embodiment, some parts of the drawings are omitted, enlarged, or reduced, and do not represent the dimensions of the actual product. The terms "upper," "lower," "left," "right," "side," and "outer" indicate directions or positional relationships based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0038] It should be understood that “first”, “second”, etc. are only for the convenience of description and do not refer to certain technical features and cannot be understood as limitations on the present invention.

[0039] The principles and features of the present invention are described below with reference to the following examples. The examples are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Where specific conditions are not specified in the examples, the experiments were carried out under conventional conditions or those recommended by the manufacturer. Instruments and equipment used, where the manufacturer is not specified, are conventional products that can be purchased commercially. Other technical methods not described herein are based on existing technologies.

[0040] Example 1

[0041] A system for live battery crushing and solid-liquid separation includes a controller (omitted from the figure), a crushing device 1, a solid-liquid separation device 2, and a filtering device 3, which are connected in sequence. The crushing device 1 includes a housing 101, with a feed port 102 located at the top center of the housing 101, connected to a collection box 106. A shearing shredder 105 is located within the housing 101, and the bottom of the housing 101 is connected to a buffer tank 104 via a discharge pipe 103.

[0042] The bottom outlet of the buffer tank 104 is connected to the inlet of the solid-liquid separation device 2. The solid-liquid separation device 2 includes a shell 209. The shell 209 is provided with an inlet 216. The inlet 216 is adapted to the outlet of the buffer tank 104 and can be connected together. A first collecting barrel 201, a second collecting barrel 202, a filter plate 203, and a vibration device 204 are provided in the shell; the inlet of the solid-liquid separation device 2 is directly opposite the filter plate 203 below, and the inlet 216 is located slightly to the right of the center of the filter plate 203, and the feed falls onto the filter plate 203. The left end of the filter plate 203 is connected to the second collecting barrel 202 through the inclined plate 205. A collecting cover 206 is provided below the filter plate 203, and the right end of the collecting cover 206 is connected to the first collecting barrel 201 below the right side of the filter plate 203; the connecting rod 217 of the vibration device 204 is installed on both sides of the outer end of the left side of the filter plate 203;

[0043] A liquid outlet pipe 207 is provided at the bottom of the first collecting barrel 201, and the liquid outlet pipe 207 is connected to the filtering device 3;

[0044] As a further preferred feature, the second collection barrel 202 has an outlet at the bottom, equipped with an automatic sealing plate, allowing the waste battery fragments to be discharged for further processing. The filtration device 3 comprises a filter 301 and a filtrate collection box 303. A filter membrane 302 with a pore size of 300 mesh is positioned in the center of the filter 301. A filtrate discharge port is provided at the bottom of the filtrate collection box 303, and an automatic valve is installed in the filtrate discharge pipe to collect the filtrate for further processing.

[0045] The controller is connected to the crushing device 1 , the solid-liquid separation device 2 and the filtering device 3 , and controls the start and shut down of the crushing device 1 , the solid-liquid separation device 2 and the filtering device 3 .

[0046] Example 2

[0047] like Figure 1 As shown, a system for live battery crushing and solid-liquid separation includes a controller (omitted), a crushing device 1, a solid-liquid separation device 2, and a filtration device 3, all connected in sequence. The crushing device 1 comprises a housing 101, with a feed port 102 located at the top center of the housing 101, connected to a collection tank 106. A shearing shredder 105 (the operating principle and structure of the shearing shredder 105 are similar to those of the prior art) is located within the housing 101. The bottom of the housing 101 is connected to a buffer tank 104 via a discharge pipe 103.

[0048] The collecting box 106 and the discharge pipe 103 are funnel-shaped structures. An automatic sealing plate 107 is hinged between the bottom end of the feed port 102 and the shell 101 of the crushing device 1. Automatic sealing plates are hinged between the bottom end of the shell 101 of the crushing device 1, between the bottom end of the discharge pipe 103 and the inlet of the buffer box 104, and between the bottom end of the buffer box 104 and the inlet of the solid-liquid separation device 2. Each automatic sealing plate is connected to the controller and controlled by the controller.

[0049] The crushing device 1 has a square housing 101 with a dry ice shower head mounted on its top. In this embodiment, two dry ice shower heads 109-1 and 109-2 are located on the top of the housing 101. Four inert gas inlets, 108-1, 108-2, 108-3, and 108-4, are located at the four corners of the bottom of the housing 101. A first air outlet 112 is located on the upper right side wall of the housing 101. The dry ice shower head is a shower-like structure and is connected to the dry ice spray device via a connecting pipe to provide dry ice.

[0050] The bottom outlet of the buffer tank 104 is connected to the inlet of the solid-liquid separator 2. The solid-liquid separator 2 includes a housing 209, within which are located a first collection bucket 201, a second collection bucket 202, a filter plate 203, and a vibrating device 204. The inlet of the solid-liquid separator 2 is positioned directly below the filter plate 203, onto which the feed falls. The left end of the filter plate 203 is connected to the second collection bucket 202 via an inclined plate 205. A collection cover 206 is located below the filter plate 203, with its right end connected to the first collection bucket 201, just below and to the right of the filter plate 203. The vibrating device 204 is mounted on both sides of the outer end of the filter plate 203.

[0051] Baffles are set at the right end and front and rear sides of the filter plate 203, and filter holes are set on the bottom end surface of the filter plate 203 to separate the electrolyte; baffles are set at the front and rear sides of the inclined plate 205; baffles are set at the left end and front and rear sides of the collection cover 206; the height of the baffles is set according to actual needs.

[0052] The solid-liquid separation device 2 has a square housing with two dry ice spray heads 213-1 and 213-2 located at its top. Inert gas inlets 212-1, 212-2, 212-3, and 212-4 are located at the four corners of the housing's bottom. A second gas outlet 211 is located on the upper right side wall of the housing.

[0053] An oxygen concentration detector 110 and a smoke concentration detector 111 are provided at the first air outlet 112 , and an oxygen concentration detector 214 and a smoke concentration detector 215 are provided at the second air outlet.

[0054] The solid-liquid separation device 2 is equipped with a movable bearing 208 and two fixed bearings 210. One fixed bearing 210 is mounted between the right outer end of the filter plate 203 and the outer casing, while the other fixed bearing 210 is mounted on the outer casing 209 below the left side of the filter plate 203. The movable bearing 208 is mounted on the left outer end of the filter plate 203. The movable bearing 208 and the left fixed bearing 210 are connected by a support rod, driving the left side of the filter plate 203 to move up and down. When there are few battery fragments, the left side of the filter plate 203 can be driven by the vibration device 204 to oscillate slightly up and down. As the battery fragments continue to fall, the filter plate 203 slowly tilts to the left under the action of gravity, allowing the battery fragments to fall through the inclined plate into the second collection bucket. The highest position of the left side of the filter plate 203 driven by the movable bearing 208 is level with the right side of the filter plate 203, and the lowest position is level with the left fixed bearing below. The left fixed bearing is positioned lower than the right fixed bearing as needed.

[0055] The right end of the collecting cover 206 is connected to the first collecting barrel 201 at an angle downward. The liquid outlet pipe 207 is arranged at the center of the bottom end surface of the first collecting barrel 201. Its bottom end surface is inclined downward toward the center so that the liquid can enter the filter 301 as quickly as possible.

[0056] The filtering device 3 includes a filter 301 and a filtrate collecting box 303 ; a filter membrane 302 is provided in the middle of the filter 301 , and the pore size of the filter membrane 302 is 400 meshes.

[0057] As a further preference, an outlet is provided at the bottom of the second collecting barrel 202, the outlet is connected to the pyrolysis furnace, and an automatic sealing plate is installed at the outlet, so that the broken pieces of waste batteries can be discharged for further processing.

[0058] Filtration device 3 includes a filter 301 and a filtrate collection box 303. A filter membrane 302 with a pore size of 300 mesh is positioned in the center of filter 301. A filtrate discharge pipe is located at the bottom of filtrate collection box 303. The pipe is equipped with an automatic valve to collect the filtrate for further processing.

[0059] The controller is connected to the crushing device 1 , the solid-liquid separation device 2 and the filtering device 3 , and controls the start and shut down of the crushing device 1 , the solid-liquid separation device 2 and the filtering device 3 .

[0060] An application method of a waste battery live crushing and solid-liquid separation system comprises the following steps:

[0061] (1) Place the charged used batteries into the collecting box 106, turn on the inert gas supply device, and fill the shell of the crushing device 1 with inert gas as a protective gas. Set the oxygen concentration threshold K and smoke concentration threshold M detected by the oxygen concentration detectors 110 and 214 and the smoke concentration detectors 111 and 215. When the detected oxygen concentration value is less than K and the smoke concentration value is less than M, the crushing work can be started, and the feed amount can be controlled by the automatic sealing plate 107.

[0062] (2) The controller starts the automatic closing plate 107, and the charged waste batteries in the collection box 106 fall into the shearing shredder 105 through the feed port for shredding. The smoke concentration detector detects in real time and transmits the data to the controller. When the smoke concentration detected by the smoke concentration detector 111 is greater than M, the controller starts the dry ice spray heads 109-1 and 109-2 to continuously extinguish the fire in the shearing shredder 105; when the oxygen concentration detected by the oxygen concentration detector 110 is greater than K, the data is transmitted to the controller, and the controller starts the dry ice spray heads 109-1 and 109-2.

[0063] When the smoke concentration detected by the smoke concentration detector 215 is greater than M, the controller activates the dry ice spray heads 213-1 and 213-2 to continuously extinguish the fire inside the solid-liquid separation device housing 209; when the oxygen concentration detected by the oxygen concentration detector 214 is greater than K, the data is transmitted to the controller, and the controller activates the dry ice spray heads 213-1 and 213-2.

[0064] (3) The crushed waste batteries are discharged from the discharge pipe 103 and fall into the buffer box 104. Then, they fall onto the filter plate 203 through the outlet of the buffer box 104. At this time, the vibration device 204 generates high-frequency vibration to separate the battery fragments from the electrolyte. At the same time, the vibration device 204 causes the crushed waste battery fragments to move to the left side of the filter plate 203. The electrolyte falls into the first collection barrel 201 through the collection cover 206. The battery fragments, under the action of gravity and the movable bearing 208, cause the filter plate to tilt leftward and downward, and fall into the second collection barrel 202 through the tilting plate. Then, they can be discharged to the pyrolysis furnace for further processing at regular intervals.

[0065] (4) After the electrolyte enters the first collecting barrel 201, it enters the filtering device 3 through the liquid outlet pipe 207, and falls into the filtrate collecting box 303 after further separation.

[0066] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0067] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A system for live crushing and solid-liquid separation of waste batteries, comprising a controller, characterized in that: It also includes a crushing device, a solid-liquid separation device and a filtering device connected in sequence; The crushing device includes a shell, a feed port is arranged at the center of the top of the shell, the feed port is connected to the collection box, a shearing shredder is arranged in the shell, and the bottom of the shell is connected to the buffer box through a discharge pipe; The bottom outlet of the buffer tank is connected to the inlet of the solid-liquid separation device, and the solid-liquid separation device includes a shell, an inlet is provided in the shell, and a first collecting bucket, a second collecting bucket, a filter plate, and a vibration device are provided in the shell; The inlet of the solid-liquid separation device is directly opposite the filter plate, and the inlet is located on the right side of the filter plate; the left end of the filter plate is connected to the second collection bucket via an inclined plate, and a collection cover is provided below the filter plate, and the right end of the collection cover is connected to the first collection bucket below the right side of the filter plate; the vibration device is installed below the filter plate and connected to the filter plate via a connecting rod, and the connecting rod is fixed to both sides of the left outer end of the filter plate; A liquid outlet pipe is provided at the bottom end of the first collecting barrel, and the liquid outlet pipe is connected to the filtering device; The controller is connected to the crushing device, the solid-liquid separation device and the filtering device, and the controller controls the start and shut down of the crushing device, the solid-liquid separation device and the filtering device; The crushing device shell is a square structure, with a dry ice spray head provided at the top, inert gas inlets at the four corners of the bottom, and a first air outlet at the upper side of the shell side wall; the solid-liquid separation device shell is a square structure, with a dry ice spray head provided at the top, inert gas inlets at the four corners of the bottom, and a second air outlet at the upper side of the shell side wall; the dry ice spray head is connected to the dry ice spray device via a connecting pipe; An oxygen concentration detector is provided at the first air outlet and the second air outlet; a smoke concentration detector is provided at the first air outlet and the second air outlet.

2. A waste battery live crushing and solid-liquid separation system according to claim 1, characterized in that: The collecting box and the discharge pipe are funnel-shaped structures, and automatic sealing plates are hinged between the bottom end of the feed port and the crushing device shell, the bottom end of the crushing device shell, the bottom end of the discharge pipe and the buffer box inlet, and the bottom end of the buffer box and the solid-liquid separation device inlet. Each automatic sealing plate is connected to the controller and controlled by the controller.

3. A waste battery live crushing and solid-liquid separation system according to claim 1, characterized in that: Each inert gas inlet is connected to an inert gas supply device through an inlet pipe.

4. A waste battery live crushing and solid-liquid separation system according to claim 1, characterized in that: Baffles are set on the right end and front and rear sides of the filter plate, and filter holes are set on the bottom end surface of the filter plate; baffles are set on the front and rear sides of the inclined plate; baffles are set on the left end and front and rear sides of the collecting cover, and the right end of the collecting cover is tilted downward to connect to the first collecting barrel, and the liquid outlet pipe is set at the center of the bottom end surface of the first collecting barrel, and its bottom end faces the center and tilts downward.

5. The system for live crushing and solid-liquid separation of used batteries according to claim 1, characterized in that: A movable bearing and two fixed bearings are provided in the solid-liquid separation device, wherein one of the fixed bearings is installed between the right outer end of the filter plate and the outer shell, and the other fixed bearing is installed on the outer shell below the left side of the filter plate. The movable bearing is installed on the left outer end of the filter plate. The movable bearing is connected to the fixed bearing on the left through a support rod, driving the left side of the filter plate to move up and down. Under the action of gravity, the filter plate slowly tilts to the left, so that the battery fragments fall into the second collection bucket through the inclined plate.

6. A waste battery live crushing and solid-liquid separation system according to claim 1, characterized in that: The filtering device comprises a filter and a filtrate collecting box; a filter membrane is arranged in the middle of the filter, and the pore size of the filter membrane is 300-600 meshes.

7. The application method of the waste battery live crushing and solid-liquid separation system according to any one of claims 1 to 6, characterized in that: The steps include: (1) Place the charged waste batteries into the collection box, turn on the inert gas supply device, and fill the crushing device shell with inert gas as a protective gas. Set the oxygen concentration threshold K and smoke concentration threshold M detected by the oxygen concentration detector and smoke concentration detector. When the detected oxygen concentration value is less than K and the smoke concentration value is less than M, the crushing work can be started, and the feed amount can be controlled by the automatic sealing plate; (2) The controller starts the automatic closing plate, and the charged waste batteries in the collection box fall into the shear shredder through the feed port for crushing. The smoke detector detects in real time and transmits the data to the controller. When the smoke concentration is greater than M, the controller starts the dry ice spray head to continuously extinguish the fire in the shear shredder; The oxygen concentration detector detects in real time and transmits the data to the controller. If the oxygen concentration is greater than K, the controller starts the dry ice spray head. (3) The broken waste batteries are discharged from the discharge pipe and fall into the buffer box, and then fall onto the filter plate through the buffer box outlet. At this time, the vibration device generates high-frequency vibration to separate the battery fragments from the electrolyte. The electrolyte falls into the first collection bucket through the collection cover, and the battery fragments tilt the filter plate to the left under the action of gravity and the movable bearing, and fall into the second collection bucket through the tilting plate; (4) After the electrolyte enters the first collection barrel, it enters the filtration device through the liquid outlet pipe, and falls into the liquid collection box after further separation.

Images