Pretreatment device and process for battery reclaimed material detection

Abstract

The invention discloses a pretreatment device for battery reclaimed material detection, and relates to the technical field of waste battery pretreatment. A feeding hopper is arranged at the top of the crushing chamber; a conveying device matched with a discharging opening of the crushing chamber is arranged in the supporting frame; a coarse crushing mechanism and a fine crushing mechanism are arranged in the crushing chamber; a nitrogen supply mechanism is arranged on the outer wall of the crushing chamber; by arranging the nitrogen supply mechanism, nitrogen gas can be filled into the crushing chamber and the oxygen concentration can be reduced when a battery is crushed, so that fire or explosion caused by contact between a battery material and oxygen is avoided, the possibility of fire or explosion is reduced, and the safety is improved; and the crushing chamber can be rapidly filled with nitrogen, and the nitrogen can cover the space in the crushing chamber in all directions.

Description

Technical Field

[0001] The present invention relates to the technical field of waste battery pretreatment, and specifically relates to a pretreatment device and process for detecting battery recycling materials. Background Art

[0002] A battery refers to a cup, trough or other container or part of the space of a composite container containing an electrolyte solution and metal electrodes to generate current, and is a device that can convert chemical energy into electrical energy. It has positive and negative electrodes. With the progress of technology, a battery generally refers to a small device that can generate electrical energy. The performance parameters of a battery mainly include electromotive force, capacity, specific energy and resistance. Using a battery as an energy source, a stable voltage, stable current and long-term stable power supply can be obtained. In the preliminary treatment of waste batteries, they need to be crushed and then sorted and preliminarily treated for subsequent detection and recycling.

[0003] Current waste batteries need to use a pretreatment device during recycling pretreatment. The most important thing during pretreatment is to crush them. Only when the batteries are crushed well can subsequent processing be carried out. However, during the crushing process of the batteries, the diaphragm is damaged, and the positive and negative electrodes are prone to direct contact, resulting in a short circuit, which is likely to cause fire or explosion and reduce safety. Secondly, when the crushing knife quickly crushes the battery, the heat generated by the rapid contact and friction between the crushing knife and the battery cannot be dissipated in time, resulting in a sharp rise in temperature, which is more likely to cause fire or explosion. Therefore, we propose a pretreatment device and process for detecting battery recycling materials. Summary of the Invention

[0004] In order to solve the problem that during the crushing process of the battery, the diaphragm is damaged, the positive and negative electrodes are prone to direct contact, resulting in a short circuit, which is likely to cause fire or explosion and reduce safety; the purpose of the present invention is to provide a pretreatment device and process for detecting battery recycling materials.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: A pretreatment device for detecting battery recycling materials includes a support frame. A crushing chamber is installed at the top of the support frame. A feeding funnel is provided at the top of the crushing chamber. A material conveying device matched with the feeding funnel is provided outside the support frame. A conveying device matched with the discharging opening of the crushing chamber is provided inside the support frame. A coarse crushing mechanism and a fine crushing mechanism are provided inside the crushing chamber. A nitrogen supply mechanism is provided on the outer wall of the crushing chamber. An air extraction pump is provided on the outer side wall of the support frame. One end of the air extraction pump is provided with an air extraction pipe, and one end of the air extraction pipe is communicated with the inside of the crushing chamber.

[0006] Preferably, the coarse crushing mechanism includes a first rotating rod and a second rotating rod disposed inside the crushing chamber. One end of each of the first rotating rod and the second rotating rod is connected to a bearing provided on the inner side wall of the crushing chamber. The outer walls of the first rotating rod and the second rotating rod are sleeved with crushing rollers. A plurality of groups of crushing knives are provided on the outer side walls of the crushing rollers. A second driving pulley and a second driven pulley are provided outside the crushing chamber. A second belt is sleeved on the outer walls of the second driving pulley and the second driven pulley. The other end of the first rotating rod penetrates through the inner side wall of the crushing chamber and is connected to the second driven pulley. The other end of the second rotating rod penetrates through the inner side wall of the crushing chamber and is connected to the second driving pulley. A fixing plate is provided on the side wall of the crushing chamber. A motor is provided on the inner side wall of the fixing plate. The output end of the motor is connected with a fourth rotating shaft. One end of the fourth rotating shaft is connected to the side wall of the second driving pulley.

[0007] Preferably, the nitrogen supply mechanism includes rotating tubes penetrating through the left and right side walls of the crushing chamber. One end of each of the two rotating tubes is provided with a jet disk. The other end of each of the two rotating tubes is provided with a rotary joint. A nitrogen tank is provided on the outer side wall of the support frame. One end of the nitrogen tank is provided with a delivery pipe. One end of the delivery pipe is connected with a cooling mechanism. A connecting pipe is provided above the support frame. One end of the connecting pipe is provided with a pump body. The other end of the connecting pipe is provided with a gas delivery pipe. The two ends of the gas delivery pipe are respectively connected to the two rotary joints. A support rod is provided on the outer side wall of the gas delivery pipe. One end of the support rod is connected to the outer side wall of the crushing chamber. Driven bevel gears are sleeved on the outer walls of the two rotating tubes. First rotating shafts are respectively provided on the left and right outer sides of the support frame. Mounting plates are sleeved on the outer walls of the two first rotating shafts. One end of each mounting plate is connected to the outer side wall of the crushing chamber. Active bevel gears meshing with the driven bevel gears are respectively provided at one ends of the two first rotating shafts. Universal couplings are respectively provided at the other ends of the two first rotating shafts. A second rotating shaft is connected between the two universal couplings. A worm gear is sleeved on the outer wall of the second rotating shaft. A third rotating shaft is connected to the outer side wall of the crushing chamber through a bearing one. A worm meshing with the worm gear is sleeved on the outer wall of the third rotating shaft. A first driven pulley is provided at one end of the third rotating shaft. A first driving pulley is sleeved on the outer wall of the fourth rotating shaft. A first belt is sleeved on the outer walls of the first driving pulley and the first driven pulley.

[0008] Preferably, the cooling mechanism includes a cooling chamber provided at one end of a delivery pipe. The cooling chamber is fixed to the outer wall of a support frame. The pump body is fixed to the top of the cooling chamber. A heat exchange pipe is provided inside the cooling chamber. A refrigerator is provided at the bottom of the cooling chamber. Water inlet pipes and a return pipe are respectively connected to both ends of the refrigerator. One end of the water inlet pipe is connected to one end of the heat exchange pipe, and one end of the return pipe is connected to the other end of the heat exchange pipe. Two groups of baffles are provided above the heat exchange pipe, and one baffle is provided below the heat exchange pipe. The baffles are connected to the inner side wall of the cooling chamber. An absorbent layer is provided on the inner side wall of the cooling chamber.

[0009] Preferably, the baffles are arranged in a V shape. The baffles provided above have their openings facing downwards, and the baffle provided below has its opening facing upwards.

[0010] Preferably, the absorbent layer is provided above the heat exchange pipe, and the heat exchange pipe is arranged in a serpentine shape.

[0011] Preferably, connecting plates are sleeved on the outer walls at both ends of the gas delivery pipe, and one end of each connecting plate is connected to the outer side wall of the crushing chamber.

[0012] Preferably, a fixing frame is sleeved on the outer wall of the third rotating shaft, and one end of the fixing frame is connected to the outer side wall of the crushing chamber.

[0013] Preferably, retaining mesh covers are provided on both the left and right sides of the inner wall of the crushing chamber, and the air jet disc is arranged inside the retaining mesh covers.

[0014] A pretreatment device and process for battery recycling material detection include the following steps:

[0015] S1: The waste battery is conveyed into the feeding funnel by the material conveying device and then falls into the crushing chamber. The motor drives the fourth rotating shaft to rotate. The fourth rotating shaft drives the second driving pulley to rotate. The second driving pulley drives the second rotating rod to rotate. With the cooperation of the second belt, the second driven pulley can be driven to rotate. Thus, the second driven pulley can drive the first rotating rod to rotate. The rotation of the first rotating rod and the second rotating rod can drive the crushing rollers and the crushing knives to rotate. The crushing knives can crush the waste battery. After the coarse crushing is completed, the battery can be finely crushed with the cooperation of the fine crushing mechanism.

[0016] S2: During the crushing process, the pump body can convey the nitrogen in the nitrogen tank into the gas delivery pipe through the connecting pipe via the delivery pipe, and then enter the air jet disc through the rotating pipe. The air jet disc sprays the nitrogen into the crushing chamber. At the same time, the air extraction pump can extract the air in the crushing chamber, so that the crushing chamber can be filled with nitrogen, avoiding the risk of fire or explosion caused by the contact of battery materials with oxygen. The retaining mesh covers can protect the air jet disc and prevent damage to the air jet disc during the crushing of the battery.

[0017] S3: During crushing, the rotation of the fourth rotating shaft drives the rotation of the first driving pulley. The first driving pulley drives the rotation of the first belt, and the first belt drives the rotation of the first driven pulley. The first driven pulley drives the rotation of the third rotating shaft, the third rotating shaft drives the rotation of the worm, the worm drives the rotation of the worm gear, the worm gear drives the rotation of the second rotating shaft, the second rotating shaft drives the rotation of the two universal couplings, the universal couplings drive the rotation of the first rotating shaft, the first rotating shaft drives the rotation of the driving bevel gear, the driving bevel gear drives the rotation of the driven bevel gear, the driven bevel gear drives the rotation of the rotating pipe, and the rotating pipe drives the rotation of the air jet disc. The air jet disc can rotate, improving the jet range of the air jet disc, quickly filling the crushing chamber with nitrogen. The nitrogen can cover the space in the crushing chamber in all directions, reducing the risk of the battery material coming into contact with oxygen;

[0018] S4: During the transportation process, the nitrogen enters the cooling chamber. The refrigerator conveys cold water through the water delivery pipe into the heat exchange pipe (the refrigerator is a prior art, and using the refrigerator to refrigerate water is a prior art). Then, the nitrogen entering the cooling chamber exchanges heat with the heat exchange pipe, and the nitrogen is cooled. The water in the heat exchange pipe enters the refrigerator through the return pipe for refrigeration and is recycled. Under the action of the water absorption layer, the water vapor of the cooled nitrogen can be filtered to ensure that the nitrogen entering the crushing chamber is dry. The cooled nitrogen is introduced into the crushing chamber, which can reduce the temperature during the crushing process, reduce heat accumulation, avoid thermal runaway caused by the heat generated by the friction of the battery, and further reduce the risk of fire or explosion. The crushed battery falls onto the conveying device and is conveyed to the next process.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. By setting up the nitrogen supply mechanism, when the present application crushes the battery, nitrogen gas can be filled into the crushing chamber, reducing the oxygen concentration, thereby avoiding the battery material coming into contact with oxygen and causing fire or explosion, reducing the possibility of fire or explosion, improving safety. At the same time, the air jet disc can rotate, quickly filling the crushing chamber with nitrogen, and the nitrogen can cover the space in the crushing chamber in all directions;

[0021] 2. By setting up the cooling mechanism, when the present application fills the crushing chamber with nitrogen, the nitrogen is cooled in advance. The cooled nitrogen is introduced into the crushing chamber, which can reduce the temperature during the crushing process, reduce heat accumulation, avoid thermal runaway caused by the heat generated by the friction of the battery, and further reduce the possibility of fire or explosion, further improving safety;

[0022] 3. By providing a coarse crushing mechanism and a fine crushing mechanism, the present invention enables the application to better crush the battery, achieving hierarchical crushing of the battery, improving the crushing effect and the quality of pretreatment. At the same time, the coarse crushing mechanism can provide a power source for the rotation of the jet disk, enabling the jet disk to rotate and realizing the effective utilization of energy, reducing the energy consumption of the overall pretreatment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the structure of the coarse crushing mechanism of the present invention.

[0026] Figure 3 It is a schematic diagram of the structure of the nitrogen supply mechanism of the present invention.

[0027] Figure 4 It is a schematic diagram of the structure of the universal coupling and the second rotating shaft of the present invention.

[0028] Figure 5 It is a schematic diagram of the structure of the cooling mechanism of the present invention.

[0029] Figure 6 For the present invention Figure 2 The enlarged schematic diagram of the structure at position A.

[0030] Figure 7 For the present invention Figure 3 The enlarged schematic diagram of the structure at position B.

[0031] Figure 8 For the present invention Figure 4 The enlarged schematic diagram of the structure at position C.

[0032] In the figure: 1, support frame; 2, nitrogen supply mechanism; 200, first driving pulley; 201, pump body; 202, connecting pipe; 203, conveying pipe; 204, nitrogen tank; 205, support rod; 206, gas transmission pipe; 207, rotating pipe; 208, jet disk; 209, mounting plate; 210, first rotating shaft; 211, second rotating shaft; 212, universal coupling; 213, first belt; 214, driving bevel gear; 215, driven bevel gear; 216, rotary joint; 217, connecting plate; 218, worm gear; 219, first driven pulley; 220, third rotating shaft; 221, fixing frame; 222, worm; 3, cooling mechanism; 300, cooling chamber; 301, water transmission pipe; 302, refrigerator; 303, baffle; 304, heat exchange pipe; 305, return pipe; 306, water absorption layer; 4, crushing chamber; 5, coarse crushing mechanism; 500, crushing roller; 501, crushing knife; 502, first rotating rod; 503, second rotating rod; 504, fixing plate; 505, motor; 506, fourth rotating shaft; 507, second driving pulley; 508, second belt; 509, second driven pulley; 6, fine crushing mechanism; 7, feed hopper; 8, material conveying device; 9, air extraction pipe; 10, air extraction pump; 11, conveying device; 12, mesh cover. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment: As Figures 1-8 shown, the present invention provides a pretreatment device for battery recycling material detection, including a support frame 1. A crushing chamber 4 is installed on the top of the support frame 1. A feed hopper 7 is provided at the top of the crushing chamber 4. A material conveying device 8 matching the feed hopper 7 is provided outside the support frame 1. A conveying device 11 matching the discharge port of the crushing chamber 4 is provided inside the support frame 1. A coarse crushing mechanism 5 and a fine crushing mechanism 6 are provided inside the crushing chamber 4. A nitrogen supply mechanism 2 is provided on the outer wall of the crushing chamber 4. An air extraction pump 10 is provided on the outer side wall of the support frame 1. One end of the air extraction pump 10 is provided with an air extraction pipe 9, and one end of the air extraction pipe 9 is communicated with the inside of the crushing chamber 4.

[0035] The coarse crushing mechanism 5 includes a first rotating rod 502 and a second rotating rod 503 disposed in a crushing chamber 4. One ends of the first rotating rod 502 and the second rotating rod 503 are both connected to bearings provided on the inner sidewall of the crushing chamber 4. Crushing rollers 500 are sleeved and installed on the outer walls of the first rotating rod 502 and the second rotating rod 503. A plurality of groups of crushing knives 501 are provided on the outer sidewall of the crushing rollers 500. A second driving pulley 507 and a second driven pulley 509 are provided outside the crushing chamber 4. A second belt 508 is sleeved on the outer walls of the second driving pulley 507 and the second driven pulley 509. The other end of the first rotating rod 502 penetrates through the inner sidewall of the crushing chamber 4 and is connected to the second driven pulley 509. The other end of the second rotating rod 503 penetrates through the inner sidewall of the crushing chamber 4 and is connected to the second driving pulley 507. A fixing plate 504 is provided on the sidewall of the crushing chamber 4. A motor 505 is provided on the inner sidewall of the fixing plate 504. The output end of the motor 505 is connected with a fourth rotating shaft 506. One end of the fourth rotating shaft 506 is connected to the sidewall of the second driving pulley 507.

[0036] By adopting the above technical solution, the setting of the coarse crushing mechanism 5 can perform coarse crushing on the battery, and at the same time cooperate with the fine crushing mechanism 6 for crushing, which can better crush the battery, realize the classified crushing of the battery, and improve the crushing effect and pretreatment quality.

[0037] The nitrogen supply mechanism 2 includes rotating tubes 207 penetrating through the left and right side walls of the crushing chamber 4. Jet plates 208 are provided at one end of each of the two groups of rotating tubes 207, and rotary joints 216 are provided at the other end of each of the two groups of rotating tubes 207. A nitrogen tank 204 is provided on the outer side wall of the support frame 1. A delivery pipe 203 is provided at one end of the nitrogen tank 204. A cooling mechanism 3 is connected to one end of the delivery pipe 203. A connecting pipe 202 is provided above the support frame 1. A pump body 201 is provided at one end of the connecting pipe 202. An air delivery pipe 206 is provided at the other end of the connecting pipe 202. The two ends of the air delivery pipe 206 are respectively connected to the two rotary joints 216. Connecting plates 217 are sleeved on the outer walls at both ends of the air delivery pipe 206. One end of the connecting plate 217 is connected to the outer side wall of the crushing chamber 4. Under the action of the connecting plate 217, the air delivery pipe 206 can be supported, and at the same time, the rotation of the rotating tube 207 can be made more stable. A support rod 205 is provided on the outer side wall of the air delivery pipe 206. One end of the support rod 205 is connected to the outer side wall of the crushing chamber 4. Driven bevel gears 215 are sleeved and installed on the outer walls of the two groups of rotating tubes 207. First rotating shafts 210 are provided on the left and right outer sides of the support frame 1. Mounting plates 209 are sleeved on the outer walls of the two groups of first rotating shafts 210. One end of the mounting plate 209 is connected to the outer side wall of the crushing chamber 4. Driving bevel gears 214 meshing with the driven bevel gears 215 are provided at one end of each of the two groups of first rotating shafts 210. Cardan shafts 212 are provided at the other end of each of the two groups of first rotating shafts 210. A second rotating shaft 211 is connected between the two cardan shafts 212. A worm gear 218 is sleeved and installed on the outer wall of the second rotating shaft 211. A third rotating shaft 220 is connected to the outer side wall of the crushing chamber 4 through a first bearing. A fixing frame 221 is sleeved on the outer wall of the third rotating shaft 220. One end of the fixing frame 221 is connected to the outer side wall of the crushing chamber 4. Under the action of the fixing frame 221, the rotation of the third rotating shaft 220 is more stable. A worm 222 meshing with the worm gear 218 is sleeved and installed on the outer wall of the third rotating shaft 220. A first driven pulley 219 is provided at one end of the third rotating shaft 220. A first driving pulley 200 is sleeved and installed on the outer wall of the fourth rotating shaft 506. A first belt 213 is sleeved on the outer walls of the first driving pulley 200 and the first driven pulley 219.

[0038] By adopting the above technical solution, nitrogen gas can be filled into the crushing chamber 4 when the battery is crushed, reducing the oxygen concentration, thereby avoiding the battery material from coming into contact with oxygen and causing fire or explosion. At the same time, the jet plate 208 can rotate, and can quickly fill the crushing chamber 4 with nitrogen, and the nitrogen can fully cover the space in the crushing chamber 4.

[0039] The cooling mechanism 3 includes a cooling chamber 300 provided at one end of a delivery pipe 203. The cooling chamber 300 is fixed to the outer wall of the support frame 1. The pump body 201 is fixed to the top of the cooling chamber 300. A heat exchange pipe 304 is provided inside the cooling chamber 300. A refrigerator 302 is provided at the bottom of the cooling chamber 300. Water delivery pipes 301 and a return pipe 305 are respectively connected to both ends of the refrigerator 302. One end of the water delivery pipe 301 is connected to one end of the heat exchange pipe 304, and one end of the return pipe 305 is connected to the other end of the heat exchange pipe 304. Two groups of baffles 303 are provided above the heat exchange pipe 304, and one group of baffles 303 is provided below the heat exchange pipe 304. The baffles 303 are connected to the inner side wall of the cooling chamber 300. An absorbent layer 306 is provided on the inner side wall of the cooling chamber 300.

[0040] By adopting the above technical solution, nitrogen is cooled and then introduced into the crushing chamber 4 after cooling, which can reduce the temperature during the crushing process, reduce heat accumulation, and avoid thermal runaway caused by the heat generated by the friction of the battery.

[0041] The baffle 303 is arranged in a V shape. The baffle 303 arranged above has an opening facing downward, and the baffle 303 arranged below has an opening facing upward.

[0042] By adopting the above technical solution, under the action of the three groups of baffles 303, the flow duration of nitrogen in the cooling chamber 300 can be increased, the residence time of nitrogen in the cooling chamber 300 can be increased, and the refrigeration effect can be improved.

[0043] The absorbent layer 306 is arranged above the heat exchange pipe 304, and the heat exchange pipe 304 is arranged in a snake shape.

[0044] By adopting the above technical solution, the absorbent layer 306 can adsorb the water vapor in the cooled nitrogen. The snake-shaped arrangement makes the flow path of cold water in the heat exchange pipe 304 longer, and can improve the heat exchange efficiency.

[0045] Mesh covers 12 are provided on both the left and right sides of the inner wall of the crushing chamber 4. The jet disk 208 is arranged inside the mesh cover 12.

[0046] By adopting the above technical solution, the mesh cover 12 is made of steel material, has high strength and wear resistance, and can better protect the jet disk 208.

[0047] A pretreatment device and process for detecting battery recycling materials include the following steps:

[0048] S1: Under the action of the material conveying device 8, the waste battery is conveyed into the feeding funnel 7 and then falls into the crushing chamber 4. The motor 505 drives the fourth rotating shaft 506 to rotate. The fourth rotating shaft 506 drives the second driving pulley 507 to rotate. The second driving pulley 507 drives the second rotating rod 503 to rotate. With the cooperation of the second belt 508, it can drive the second driven pulley 509 to rotate. Thus, the second driven pulley 509 can drive the first rotating rod 502 to rotate. The rotation of the first rotating rod 502 and the second rotating rod 503 can drive the crushing roller 500 and the crushing knife 501 to rotate. The crushing knife 501 can crush the waste battery. After the coarse crushing is completed, with the cooperation of the fine crushing mechanism 6, the battery can be finely crushed;

[0049] S2: During the crushing process, the pump body 201 can convey the nitrogen in the nitrogen tank 204 into the gas transmission pipe 206 through the connecting pipe 202 via the conveying pipe 203, and then enter the air jet disc 208 through the rotating pipe 207. The air jet disc 208 sprays the nitrogen into the crushing chamber 4. At the same time, the air extraction pump 10 can extract the air in the crushing chamber 4, so that the nitrogen can fill the crushing chamber 4, avoiding the risk of fire or explosion caused by the contact between the battery material and oxygen. Under the action of the retaining net cover 12, the air jet disc 208 can be protected to avoid damage to the air jet disc 208 during the battery crushing;

[0050] S3: During the crushing process, the rotation of the fourth rotating shaft 506 will drive the first driving pulley 200 to rotate. The first driving pulley 200 drives the first belt 213 to rotate. The first belt 213 drives the first driven pulley 219 to rotate. The first driven pulley 219 drives the third rotating shaft 220 to rotate. The third rotating shaft 220 drives the worm 222 to rotate. The worm 222 drives the worm gear 218 to rotate. The worm gear 218 drives the second rotating shaft 211 to rotate. The second rotating shaft 211 drives the two universal couplings 212 to rotate. The universal couplings 212 drive the first rotating shaft 210 to rotate. The first rotating shaft 210 drives the driving bevel gear 214 to rotate. The driving bevel gear 214 drives the driven bevel gear 215 to rotate. The driven bevel gear 215 drives the rotating pipe 207 to rotate. The rotating pipe 207 drives the air jet disc 208 to rotate. The air jet disc 208 can rotate, increasing the jet range of the air jet disc 208, enabling the nitrogen to quickly fill the crushing chamber. The nitrogen can cover the space in the crushing chamber 4 in all directions, reducing the risk of contact between the battery material and oxygen;

[0051] S4: During the transportation process, nitrogen enters the cooling chamber 300. The refrigerator 302 conveys cold water into the heat exchange tube 304 through the water delivery pipe 301 (the refrigerator 302 is a prior art, and using the refrigerator 302 to refrigerate water is a prior art). Then, the nitrogen entering the cooling chamber 300 exchanges heat with the heat exchange tube 304, and the nitrogen is cooled. The water in the heat exchange tube 304 enters the refrigerator 302 through the return pipe 305 for refrigeration and is recycled. Under the action of the water absorption layer 306, the water vapor of the cooled nitrogen can be filtered to ensure that the nitrogen entering the crushing chamber 4 is dry. The cooled nitrogen is introduced into the crushing chamber 4, which can reduce the temperature during the crushing process, reduce heat accumulation, avoid thermal runaway caused by the heat generated by the friction of the battery, and further reduce the risk of fire or explosion. The crushed battery falls onto the conveyor device 11 and is conveyed to the next process.

[0052] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A pretreatment device for detecting battery recycling materials, comprising a support frame (1), a crushing chamber (4) is installed on the top of the support frame (1), a feeding funnel (7) is arranged on the top of the crushing chamber (4), a material conveying device (8) matched with the feeding funnel (7) is arranged outside the support frame (1), and a conveying device (11) matched with the discharging port of the crushing chamber (4) is arranged inside the support frame (1), characterized in that: A coarse crushing mechanism (5) and a fine crushing mechanism (6) are provided inside the crushing chamber (4). A nitrogen supply mechanism (2) is provided on the outer wall of the crushing chamber (4). An air extraction pump (10) is provided on the outer side wall of the support frame (1). One end of the air extraction pump (10) is provided with an air extraction pipe (9), and one end of the air extraction pipe (9) is communicated with the inside of the crushing chamber (4).

2. The pretreatment device for detecting battery recycling materials according to claim 1, characterized in that, The coarse crushing mechanism (5) includes a first rotating rod (502) and a second rotating rod (503) provided inside the crushing chamber (4). One end of each of the first rotating rod (502) and the second rotating rod (503) is connected to a bearing provided on the inner side wall of the crushing chamber (4). Crushing rollers (500) are sleeved and installed on the outer walls of the first rotating rod (502) and the second rotating rod (503). A plurality of groups of crushing knives (501) are provided on the outer side wall of the crushing roller (500). A second driving pulley (507) and a second driven pulley (509) are provided outside the crushing chamber (4). A second belt (508) is sleeved on the outer walls of the second driving pulley (507) and the second driven pulley (509). The other end of the first rotating rod (502) penetrates through the inner side wall of the crushing chamber (4) and is connected to the second driven pulley (509). The other end of the second rotating rod (503) penetrates through the inner side wall of the crushing chamber (4) and is connected to the second driving pulley (507). A fixing plate (504) is provided on the side wall of the crushing chamber (4). A motor (505) is provided on the inner side wall of the fixing plate (504). The output end of the motor (505) is connected to a fourth rotating shaft (506), and one end of the fourth rotating shaft (506) is connected to the side wall of the second driving pulley (507).

3. The pretreatment device for detecting battery recycling materials according to claim 2, wherein, The nitrogen supply mechanism (2) includes rotating tubes (207) penetrating through the left and right side walls of the crushing chamber (4). At one end of each of the two rotating tubes (207), there is a jet disk (208). At the other end of each of the two rotating tubes (207), there is a rotary joint (216). On the outer side wall of the support frame (1), there is a nitrogen tank (204). At one end of the nitrogen tank (204), there is a delivery pipe (203). One end of the delivery pipe (203) is connected to a cooling mechanism (3). Above the support frame (1), there is a connecting pipe (202). At one end of the connecting pipe (202), there is a pump body (201). At the other end of the connecting pipe (202), there is an air delivery pipe (206). The two ends of the air delivery pipe (206) are respectively connected to the two rotary joints (216). On the outer side wall of the air delivery pipe (206), there is a support rod (205). One end of the support rod (205) is connected to the outer side wall of the crushing chamber (4). On the outer walls of the two rotating tubes (207), there are driven bevel gears (215) sleeved and installed. On the left and right outer sides of the support frame (1), there are first rotating shafts (210). On the outer walls of the two first rotating shafts (210), there are mounting plates (209) sleeved. One end of the mounting plate (209) is connected to the outer side wall of the crushing chamber (4). At one end of each of the two first rotating shafts (210), there is a driving bevel gear (214) meshing with the driven bevel gear (215). At the other end of each of the two first rotating shafts (210), there is a universal coupling (212). Between the two universal couplings (212), there is a second rotating shaft (211) connected. On the outer wall of the second rotating shaft (211), there is a worm gear (218) sleeved and installed. On the outer side wall of the crushing chamber (4), there is a third rotating shaft (220) connected through a first bearing. On the outer wall of the third rotating shaft (220), there is a worm (222) sleeved and installed and meshing with the worm gear (218). At one end of the third rotating shaft (220), there is a first driven pulley (219). On the outer wall of the fourth rotating shaft (506), there is a first driving pulley (200) sleeved and installed. The outer walls of the first driving pulley (200) and the first driven pulley (219) are sleeved with a first belt (213).

4. The pretreatment device for detecting battery recycling materials according to claim 3, characterized in that, The cooling mechanism (3) includes a cooling chamber (300) provided at one end of a delivery pipe (203). The cooling chamber (300) is fixed to the outer wall of a support frame (1). The pump body (201) is fixed to the top of the cooling chamber (300). A heat exchange pipe (304) is provided inside the cooling chamber (300). A refrigerator (302) is provided at the bottom of the cooling chamber (300). Water delivery pipes (301) and a return pipe (305) are respectively connected to both ends of the refrigerator (302). One end of the water delivery pipe (301) is connected to one end of the heat exchange pipe (304), and one end of the return pipe (305) is connected to the other end of the heat exchange pipe (304). Two groups of baffles (303) are provided above the heat exchange pipe (304), and one group of baffles (303) is provided below the heat exchange pipe (304). The baffles (303) are connected to the inner side wall of the cooling chamber (300). An absorbent layer (306) is provided on the inner side wall of the cooling chamber (300).

5. The pretreatment device for detecting battery recycling materials according to claim 4, wherein, The baffles (303) are arranged in a V shape. The baffles (303) provided above have their openings facing downwards, and the baffles (303) provided below have their openings facing upwards.

6. The pretreatment device for detecting battery recycling materials according to claim 4, characterized in that, The absorbent layer (306) is provided above the heat exchange pipe (304), and the heat exchange pipe (304) is arranged in a snake shape.

7. The pretreatment device for detecting battery recycling materials according to claim 3, characterized in that Connection plates (217) are sleeved on the outer walls at both ends of the air delivery pipe (206). One end of the connection plate (217) is connected to the outer wall of the crushing chamber (4).

8. The pretreatment device for detecting battery recycling materials according to claim 3, wherein, A fixing frame (221) is sleeved on the outer wall of the third rotating shaft (220). One end of the fixing frame (221) is connected to the outer wall of the crushing chamber (4).

9. The pretreatment device for detecting battery recycling materials according to claim 3, wherein, Mesh covers (12) are provided on the left and right sides of the inner wall of the crushing chamber (4). The air jet disc (208) is arranged inside the mesh cover (12).

10. A pretreatment device and process for detecting battery recycling materials according to any one of claims 1-9, characterized in that, It includes the following steps: S1: Under the action of a material conveying device (8), waste batteries are conveyed into a feeding funnel (7), and then fall into the crushing chamber (4). The motor (505) drives the fourth rotating shaft (506) to rotate. The fourth rotating shaft (506) drives the second driving pulley (507) to rotate. The second driving pulley (507) drives the second rotating rod (503) to rotate. With the cooperation of the second belt (508), the second driven pulley (509) can be driven to rotate. Thus, the second driven pulley (509) can drive the first rotating rod (502) to rotate. The rotation of the first rotating rod (502) and the second rotating rod (503) can drive the crushing rollers (500) and the crushing knives (501) to rotate. The crushing knives (501) can crush the waste batteries. After rough crushing, with the cooperation of a fine crushing mechanism (6), the batteries can be finely crushed; S2: During the crushing process, the pump body (201) can convey the nitrogen in the nitrogen tank (204) through the conveying pipe (203) and the connecting pipe (202) into the gas transmission pipe (206), and then enter the jet disk (208) through the rotating pipe (207). The jet disk (208) sprays the nitrogen into the crushing chamber (4). At the same time, the air pump (10) can extract the air in the crushing chamber (4), so that the crushing chamber (4) can be filled with nitrogen, avoiding the risk of fire or explosion caused by the contact of the battery material with oxygen. Under the action of the mesh cover (12), the jet disk (208) can be protected to prevent damage to the jet disk (208) during the crushing of the battery; S3: During the crushing process, the rotation of the fourth rotating shaft (506) drives the first driving pulley (200) to rotate. The first driving pulley (200) drives the first belt (213) to rotate. The first belt (213) drives the first driven pulley (219) to rotate. The first driven pulley (219) drives the third rotating shaft (220) to rotate. The third rotating shaft (220) drives the worm (222) to rotate. The worm (222) drives the worm gear (218) to rotate. The worm gear (218) drives the second rotating shaft (211) to rotate. The second rotating shaft (211) drives the two universal couplings (212) to rotate. The universal couplings (212) drive the first rotating shaft (210) to rotate. The first rotating shaft (210) drives the driving bevel gear (214) to rotate. The driving bevel gear (214) drives the driven bevel gear (215) to rotate. The driven bevel gear (215) drives the rotating pipe (207) to rotate. The rotating pipe (207) drives the jet disk (208) to rotate. The jet disk (208) can rotate, increasing the jet range of the jet disk (208), quickly filling the crushing chamber with nitrogen, and enabling the nitrogen to cover the space in the crushing chamber (4) in all directions, reducing the risk of contact between the battery material and oxygen; S4: During the transportation process, the nitrogen enters the cooling chamber (300). The refrigerator (302) conveys cold water through the water delivery pipe (301) into the heat exchange pipe (304) (the refrigerator (302) is a prior art, and using the refrigerator (302) to refrigerate water is a prior art). Then, the nitrogen entering the cooling chamber (300) exchanges heat with the heat exchange pipe (304), and the nitrogen is cooled. The water in the heat exchange pipe (304) enters the refrigerator (302) through the return pipe (305) for refrigeration and is recycled. Under the action of the water absorption layer (306), the water vapor of the cooled nitrogen can be filtered to ensure that the nitrogen entering the crushing chamber (4) is dry. The cooled nitrogen is introduced into the crushing chamber (4), which can reduce the temperature during the crushing process, reduce heat accumulation, avoid thermal runaway caused by the heat generated by the friction of the battery, and further reduce the risk of fire or explosion. The crushed battery falls onto the conveyor device (11) and is conveyed to the next process.

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