Refrigerator disassembling and recycling line

Abstract

The utility model discloses a refrigerator disassembling and recycling line, belongs to the technical field of refrigerator recycling, and solves the problem that an existing waste refrigerator treatment line does not treat waste gas. The device comprises a pre-disassembling platform used for manually disassembling the refrigerator, a tearing crusher used for tearing and crushing the refrigerator, a vibrating screen used for separating a foam plastic mixture from metal, an eddy current separator used for separating copper and aluminum and copper and aluminum separation equipment which are sequentially connected through a conveying belt, exhaust ports of the tearing crusher, the cyclone separator assembly and the volume reduction machine are all communicated with an air inlet of the waste gas treatment equipment, and activated carbon is arranged in the waste gas treatment equipment. Compared with an existing waste refrigerator treatment line, the waste gas treatment line has the advantages that waste gas can be treated, parts which are easy to generate waste gas and dust are communicated with waste gas treatment equipment, organic waste gas such as Freon, benzene, methylbenzene and dimethylbenzene can be effectively removed by activated carbon of the waste gas treatment equipment, and suspended particulate matters in air are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerator recycling, in particular to a refrigerator disassembly and recycling line. Background Art

[0002] At present, the recyclable resources in waste refrigerators mainly include foam, iron materials and non-ferrous metals containing copper and aluminum.

[0003] Although the existing waste refrigerator treatment lines can screen and classify different materials of waste refrigerators for recycling, they usually do not treat waste gas, which is not conducive to environmental protection.

[0004] For example, the Chinese patent with the publication number CN210546966U discloses a waste refrigerator disassembly, crushing and recycling line, which includes a pre-disassembly platform, a shredder, a crusher, a first vibrating screen for vibrating and screening the materials received by the crusher, a magnetic separator, an eddy current separator and several conveyor belts arranged in sequence along the conveying direction; it also includes a hammer-blade type blower and a foam feeding device; a second vibrating screen is arranged below the eddy current separator; the crusher includes a frame and a crushing mechanism; the crushing mechanism includes a box body, a knife roller arranged in the box body and a driving device for driving the knife roller; the box body includes a feeding port arranged at the top and a discharging port arranged at the bottom; the inner side wall of the box body is provided with lining plates, and the lining plates include an upper lining plate and a lower lining plate; the lower lining plate includes an inclined part inclined from bottom to the center of the box body and an extending part vertically extending downward from the end of the inclined part. Although the waste refrigerator disassembly, crushing and recycling line of this utility model improves the crushing efficiency of the recycling line, it does not treat waste gas. Summary of the Utility Model

[0005] Aiming at the above problems in the prior art, the utility model provides a refrigerator disassembly and recycling line, which solves the problem that the existing waste refrigerator treatment line does not treat waste gas.

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] A refrigerator disassembly and recycling line is provided, which includes a pre-disassembly platform for manually disassembling a refrigerator, a tearing crusher for tearing and crushing the refrigerator, a vibrating screen for separating a foam-plastic mixture from metal, an eddy current separator for separating copper and aluminum, and a copper-aluminum sorting device, which are sequentially connected by a conveyor belt; a magnetic separator for separating iron is arranged on the top of the vibrating screen, and a negative-pressure feed pipe of a cyclone separator assembly is arranged at the foam-plastic mixture outlet of the vibrating screen. The cyclone separator assembly is used for separating plastic and foam, and the foam discharge port of the cyclone separator assembly is connected with the feed port of a volume reducer; the exhaust ports of the tearing crusher, the cyclone separator assembly and the volume reducer are all communicated with the intake port of a waste gas treatment device, and activated carbon is arranged inside the waste gas treatment device.

[0008] The working principle of this scheme is to place the waste refrigerator on the pre-disassembly platform for manual disassembly, and then move the disassembled refrigerator to the tearing crusher for tearing and crushing. The crushed materials are separated into metal materials and foam plastic mixture through the vibrating screen, and the foam plastic mixture is separated into plastic and foam through the cyclone separator assembly. The foam is output and bagged through the volume reducer, and the iron in the metal material is screened out by the magnetic iron remover, and the copper and aluminum in the metal material are sorted out by the copper and aluminum sorting equipment. Among them, the exhaust gas and dust parts that are easily generated by the tearing crusher, cyclone separator assembly and volume reducer are all connected to the exhaust gas treatment equipment. The activated carbon of the exhaust gas treatment equipment has a highly developed pore structure and a huge specific surface area, and has a strong adsorption capacity for volatile organic compounds, which can effectively remove organic waste gases such as freon, benzene, toluene and xylene, and through its surface adsorption and filtration, it reduces suspended particulate matter in the air and improves air quality.

[0009] Furthermore, the waste gas treatment equipment includes a first dust collector and a second dust collector, the air outlets of the first dust collector and the second dust collector are respectively connected to the air inlets of the first activated carbon adsorption box and the second activated carbon adsorption box; the air outlets of the first activated carbon adsorption box and the second activated carbon adsorption box are both connected to the chimney; the air inlet of the first dust collector is connected to the exhaust port of the tearing shredder, and the air inlet of the second dust collector is connected to the exhaust port of the cyclone separator assembly and the volume reducer. Since the tearing shredder tears and shreds the refrigerator, the waste gas and dust generated by the tearing shredder are relatively large, so the first dust collector and the first activated carbon adsorption box are used alone to treat the waste gas and dust, and the other second dust collector and the second activated carbon adsorption box are in the remaining waste gas and dust.

[0010] Furthermore, a suction hood is provided at the Freon extraction station on the pre-disassembly platform, the suction hood is used to extract Freon and the air outlet of the suction hood is connected to the air inlet of the second dust collector.

[0011] Furthermore, the tearing crusher includes: a chassis, which is fixed on the frame, and the chassis includes a tearing chamber, a crushing chamber and a discharging chamber which are interconnected from top to bottom; the discharge port of the discharging chamber is connected to the discharging hopper, and the top of the discharging hopper is provided with an exhaust gas outlet which is connected to the air inlet of the first dust collector; a blade assembly, the blade assembly includes a rotating shaft rotatably arranged on the frame and located on the central axis of the crushing chamber, and a cutting seat and two roller discs are fixed on the rotating shaft from top to bottom, the cutting seat is located in the tearing chamber and is provided with a plurality of cutting knives, and the rotating shaft drives the plurality of cutting knives to rotate to collide and tear the materials in the tearing chamber; the two roller discs are both located in the crushing chamber, and each roller disc is provided with a plurality of rollers rotatably arranged in a circumferential direction, and the roller disc drives the plurality of rollers thereon to roll, squeeze and crush the materials located on the inner wall of the crushing chamber; a motor assembly, the motor assembly is fixed on the frame, and the motor assembly includes at least one motor which is transmission-connected to the rotating shaft.

[0012] In this solution, the disassembled refrigerator is placed in the tearing chamber, and the rotating shaft drives multiple cutters to rotate to collide and tear the refrigerator in the tearing chamber into strips or blocks of materials. The torn materials fall into the crushing chamber from the gap between the tearing chamber and the cutter seat. The roller disc in the crushing chamber drives multiple rollers on it to roll, squeeze and crush the materials on the inner wall of the crushing chamber. The materials are further crushed under the shear force and kneading of the rollers and enter the discharge chamber. The tearing machine and the crusher are integrated into one, which not only reduces the occupied space, but also does not require material transmission, thereby improving the recycling efficiency.

[0013] Furthermore, the cutter seat includes a bottom plate fixed on the rotating shaft, the bottom plate is located at the connection between the tearing chamber and the crushing chamber, and two mounting seats arranged perpendicular to each other are arranged on the bottom plate, both mounting seats are fixed on the top of the rotating shaft, and a cutter is fixed on both ends of each mounting seat. The cutter is used to collide and tear the refrigerator.

[0014] Furthermore, the cyclone separator assembly includes a first cyclone separator and a first Z-type separator which are connected to each other. The first cyclone separator conveys the foam-plastic mixture to a curved pipe in the first Z-type separator to separate the foam and the plastic.

[0015] Furthermore, the cyclone separator assembly also includes a second cyclone separator and a second Z-type separator that are connected to each other, the negative pressure feed pipes of the first cyclone separator and the second cyclone separator are respectively arranged at the outlets of the foam-plastic mixture of the vibrating screen and the eddy current separator, the feed port of the second Z-type separator is respectively connected to the discharge port of the second cyclone separator and the plastic discharge port of the first Z-type separator, the discharge port of the second Z-type separator is connected to the feed port of the foam grinder used to separate foam and plastic, and the foam discharge port on the foam grinder is connected to the feed port of the volume reducer. Since the vibrating screen can only separate most of the foam-plastic mixture, and there is still residue, the residual foam-plastic mixture is further recovered at the eddy current separator through the second cyclone separator and the second Z-type separator, and the foam-plastic mixture collected by the second cyclone separator and the second Z-type separator enters the foam grinder together with the separated foam-plastic mixture in the first cyclone separator and the first Z-type separator for separation again, thereby increasing the amount of foam recovered.

[0016] Furthermore, the foam grinding machine includes: a bracket, on which a platform is provided; a grinding machine main body, which includes a feed cylinder fixed on the upper surface of the platform. A feed shaft is rotatably arranged in the feed cylinder, an inner rubbing plate is fixed on the feed shaft, and an outer rubbing plate is fixed on the inner wall of the feed cylinder. The feed shaft is used to send the foam mixture in the feed cylinder into the gap between the inner rubbing plate and the outer rubbing plate for grinding; a negative pressure recovery air hopper, which is used to classify foam and plastic. The negative pressure recovery air hopper is fixed on the lower surface of the platform and communicated with the feed cylinder. A foam recovery pipe for recovering foam by negative pressure is obliquely arranged on the side wall of the negative pressure recovery air hopper, and the foam discharge port of the foam recovery pipe is communicated with the feed port of the volume reduction machine.

[0017] In this solution, by putting the massive foam mixture with plastic into the feed cylinder, the feed shaft transports the foam mixture into the gap between the inner rubbing plate and the outer rubbing plate. At the same time, the feed shaft drives the inner rubbing plate to rotate relative to the outer rubbing plate. The foam in the foam mixture is relatively loose in structure and consists of many bubbles, so it is easy to be broken into foam particles under the mechanical force of the inner rubbing plate and the outer rubbing plate; while the plastic in the foam mixture has higher density and strength. Therefore, under the same grinding conditions, the plastic is not ground into particles like the foam, so the plastic still remains in a massive state. The massive plastic and foam particles enter the negative pressure recovery air hopper. The weight of the foam particles is much smaller than that of the massive plastic, and the negative pressure recovery air hopper can obtain foam particles with higher purity through negative pressure.

[0018] Furthermore, the feed shaft is conical. The small-diameter end of the feed shaft outside the feed cylinder is connected to the motor, and spiral blades are arranged on the outer wall of the feed shaft. The conical shape design can effectively distribute the foam mixture evenly, so that the foam mixture is not easy to accumulate or block during the feeding process. The presence of the spiral blades can further push the foam mixture downward to ensure continuous and uniform feeding.

[0019] Furthermore, the inner rubbing plate and the outer rubbing plate are respectively an outer gear ring structure and an inner gear ring structure. The inner rubbing plate is fixed on the large-diameter end of the feed shaft, and the outer gear on the inner rubbing plate and the inner gear on the outer rubbing plate are both helical gears. The setting of the helical gears enables the foam mixture to move to the negative pressure recovery air hopper after grinding.

[0020] The utility model discloses a refrigerator disassembly and recycling line, and its beneficial effects are:

[0021] 1. Compared with the existing waste refrigerator treatment line, the utility model can treat waste gas. The parts of the tearing crusher, cyclone separator assembly and volume reducer that are prone to generate waste gas and dust are all connected to the waste gas treatment equipment. The activated carbon of the waste gas treatment equipment has a highly developed pore structure and a large specific surface area, and has a strong adsorption capacity for volatile organic compounds. It can effectively remove organic waste gases such as Freon, benzene, toluene and xylene, and reduce the suspended particulate matter in the air through the adsorption and filtration effects on its surface, improving air quality.

[0022] 2. The tearing crusher of the utility model integrates a tearing machine and a crusher. Compared with the prior art of separately setting a tearing machine and a crusher, the utility model not only reduces the occupied space, but also does not require material transfer, improving the recycling efficiency.

[0023] 3. The foam grinding machine of the utility model uses an inner rubbing plate and an outer rubbing plate to grind the foam, further reducing the volume of the foam, increasing the weight difference between the foam and the plastic, and finally recovering through a negative pressure recovery air hopper, improving the recovery quantity and purity of the foam and the plastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a refrigerator disassembly and recycling line;

[0025] Figure 2 is Figure 1 an enlarged view of part D in

[0026] Figure 3 a three-dimensional view of the refrigerator disassembly and recycling line;

[0027] Figure 4 is a schematic structural diagram of the tearing crusher;

[0028] Figure 5 is a side view of the tearing crusher;

[0029] Figure 6 is a top view of the tearing crusher;

[0030] Figure 7 is Figure 6 a sectional view taken along the B-B direction in

[0031] Figure 8 is Figure 7 an enlarged view of part A in

[0032] Figure 9 is a schematic structural diagram of the cutter holder;

[0033] Figure 10 is a schematic structural diagram of the hob disc;

[0034] Figure 11 isFigure 7 Schematic diagram of the cross section in the CC direction;

[0035] Figure 12 It is a structural schematic diagram of a star-shaped discharger;

[0036] Figure 13 It is a structural schematic diagram of a foam grinding machine;

[0037] Figure 14 It is a three-dimensional diagram of a foam grinding machine;

[0038] Figure 15 This is a component diagram of the inner washboard;

[0039] Figure 16 This is a component diagram of the outer washboard;

[0040] Among them: 100, pre-disassembly platform; 110, suction hood; 200, tearing crusher; 210, chassis; 211, tearing chamber; 212, crushing chamber; 213, discharge chamber; 214, lining plate; 215, scraper; 216, discharge hopper; 217, star discharger; 220, blade assembly; 221, cutter seat; 222, hob; 223, hob; 224, rotating shaft; 225, bottom plate; 226 , mounting seat; 227, cutter; 228, temperature probe; 230, motor assembly; 231, motor; 232, main pulley; 240, frame; 241, first platform; 242, second platform; 243, third platform; 244, fixed bearing seat; 300, exhaust gas treatment equipment; 311, first dust collector; 312, first activated carbon adsorption box; 321, second dust collector; 322, second activated carbon adsorption box; 330, chimney; 400, vibrating screen; 500, magnetic iron remover; 600, cyclone separator assembly; 611, first cyclone separator; 612, first Z-type separator; 621, second cyclone separator; 622, second Z-type separator; 700, eddy current separator; 710, copper and aluminum sorting equipment; 800, foam grinder; 81, drive motor; 82, support; 83, pulley; 84, support Support bearing seat; 85, top plate; 86, feed shaft; 87, barrel; 88, grinder body; 89, inner rubbing board; 810, outer rubbing board; 811, bracket; 812, conical barrel; 813, connecting plate; 814, cone bucket; 815, negative pressure recovery wind bucket; 816, foam recovery pipe; 817, protective cover; 818, feed pipe; 819, guardrail; 820, platform; 821, stairs; 900, volume reducer. DETAILED DESCRIPTION

[0041] The specific embodiments of the present utility model will be described below to facilitate those skilled in the art of this technology to understand the present utility model. However, it should be clear that the present utility model is not limited to the scope of the specific embodiments. For those of ordinary skill in the art of this technology, as long as various changes are within the spirit and scope of the present utility model defined and determined by the appended claims, these changes are obvious, and all utility models created using the concept of the present utility model are within the scope of protection.

[0042] Embodiment 1

[0043] Reference Figure 1 and Figure 3 Referring to

[0044] and

[0045] , this embodiment provides a refrigerator disassembly and recycling line, which includes a pre-disassembly platform 100 for manually disassembling refrigerators, a tearing crusher 200 for tearing and crushing refrigerators, a vibrating screen 400 for separating the foam plastic mixture from metals, an eddy current separator 700 for separating copper and aluminum, and a copper-aluminum sorting device 710, which are connected in sequence through a conveyor belt.

[0046] Reference Figure 2 and

[0047] , in order to avoid environmental pollution, the exhaust ports of the tearing crusher 200, the cyclone separator assembly 600, and the volume reduction machine 900 are all connected to the intake port of the waste gas treatment device 300, and activated carbon is provided inside the waste gas treatment device 300. The activated carbon in the waste gas treatment device 300 has a highly developed pore structure and a large specific surface area, has a strong adsorption capacity for volatile organic compounds, can effectively remove organic waste gases such as Freon, benzene, toluene, and xylene, and reduce suspended particulate matter in the air and improve air quality through its surface adsorption and filtration effects.As the specific structure of the waste gas treatment device 300, the waste gas treatment device 300 includes a first dust collector 311 and a second dust collector 321. The air outlets of the first dust collector 311 and the second dust collector 321 are respectively communicated with the air inlets of a first activated carbon adsorption box 312 and a second activated carbon adsorption box 322; the air outlets of the first activated carbon adsorption box 312 and the second activated carbon adsorption box 322 are both communicated with a chimney 330; the air inlet of the first dust collector 311 is communicated with the exhaust port of a tearing crusher 200, and the air inlet of the second dust collector 321 is communicated with the exhaust ports of a cyclone separator assembly 600 and a volume reducer 900. Since the tearing crusher 200 tears and crushes the refrigerator, the waste gas and dust generated by the tearing crusher 200 are relatively large, so the first dust collector 311 and the first activated carbon adsorption box 312 are used alone to treat the waste gas and dust, and the other second dust collector 321 and second activated carbon adsorption box 322 are for the remaining waste gas and dust.

[0048] As the specific structure of the cyclone separator assembly 600, the cyclone separator assembly 600 includes a first cyclone separator 611 and a first Z-shaped separator 612, a second cyclone separator 621 and a second Z-shaped separator 622.

[0049] The first cyclone separator 611 transports the foam-plastic mixture into the bent pipe in the first Z-shaped separator 612 for separating foam and plastic. The second cyclone separator 621 transports the foam-plastic mixture into the bent pipe in the second Z-shaped separator 622 for separating foam and plastic.

[0050] Since the vibrating screen 400 can only separate most of the foam-plastic mixture and there is still residue, it is necessary to further recover the remaining foam-plastic mixture at the eddy current separator 700 through the second cyclone separator 621 and the second Z-shaped separator 622. Therefore, the negative pressure feed pipes 818 of the first cyclone separator 611 and the second cyclone separator 621 are respectively arranged at the foam-plastic mixture outlets of the vibrating screen 400 and the eddy current separator 700.

[0051] In order to increase the recovery amount of foam, the feed inlet of the second Z-shaped separator 622 is respectively communicated with the discharge outlet of the second cyclone separator 621 and the plastic discharge outlet of the first Z-shaped separator 612. The discharge outlet of the second Z-shaped separator 622 is communicated with the feed inlet of a foam grinding machine 800 for separating foam and plastic. The foam discharge outlet on the foam grinding machine 800 is communicated with the feed inlet of the volume reducer 900. The foam-plastic mixture collected by the second cyclone separator 621 and the second Z-shaped separator 622 enters the foam grinding machine 800 together with the separated foam-plastic mixture in the first cyclone separator 611 and the first Z-shaped separator 612 for re-separation.

[0052] In this embodiment, the vibrating screen 400, eddy current separator 700, copper-aluminum separation equipment 710, magnetic separator 500, first dust collector 311, second dust collector 321, first cyclone separator 611 and first Z-type separator 612, second cyclone separator 621 and second Z-type separator 622, and volume reducer are all prior arts. Since they are prior arts, the specific working principles and connection relationships thereof will not be elaborated in this embodiment.

[0053] To sum up, the working principle of this embodiment is as follows:

[0054] Workers manually disassemble the waste refrigerator on the pre-disassembly platform 100, and at the same time recover the refrigerant and mineral oil in the compressor, then manually remove the compressor, and suck away the scattered freon through the suction hood 110 at the freon extraction station. The disassembled refrigerator is moved to the tearing crusher 200 for tearing and crushing, and the crushed materials are conveyed to the vibrating screen 400 by a conveyor. The vibrating screen 400 disperses the materials, and the materials include a mixture of metal and foam.

[0055] For the recovery of the foam mixture materials, most of the foam plastic mixture on the vibrating screen 400 enters the first Z-type separator 612 through the first cyclone separator 611. The first Z-type separator 612 separates pure foam and a small amount of foam plastic mixture. The remaining foam plastic mixture on the vibrating screen 400 and the small amount of foam plastic mixture in the first Z-type separator 612 both enter the second cyclone separator 621 and the second Z-type separator 622 for further separation. The small amount of foam plastic mixture in the second Z-type separator 622 enters the foam grinding machine for final selection. Among them, the pure foam separated by the first Z-type separator 612, the second Z-type separator 622, and the foam grinding machine enters the volume reducer 900 for output and bagging.

[0056] For the recovery of metal materials, the iron in the metal materials is screened out by the magnetic separator 500, and the copper and aluminum in the metal materials are separated by the copper-aluminum separation equipment 710.

[0057] For the recovery of waste gas and dust, in this embodiment, the parts of the tearing crusher 200, cyclone separator assembly 600, and volume reducer 900 that are prone to generate waste gas and dust are all connected to the waste gas treatment equipment 300. The activated carbon of the waste gas treatment equipment 300 has a highly developed pore structure and a large specific surface area, and has a strong adsorption capacity for volatile organic compounds, and can effectively remove organic waste gases such as freon, benzene, toluene, and xylene, and reduce the suspended particulate matter in the air and improve the air quality through its surface adsorption and filtration effects.

[0058] Embodiment 2

[0059] This embodiment makes further limitations on the basis of Embodiment 1. The specific improvement lies in how to set the specific structure of the tearing crusher 200. For other parts not mentioned, refer to Embodiment 1 or the prior art.

[0060] In the prior art, a tearing machine and a crusher are respectively used for the recovery of large-piece product materials, which occupy a large space and require the transportation of materials, resulting in low recovery efficiency. In this embodiment, in order to solve the problem of low recovery efficiency caused by the non-integrated setting of the existing tearing machine and crusher, the tearing chamber 211 and the crushing chamber 212 are connected and set, and a blade assembly 220 is arranged therein. After the tearing chamber 211 tears the material, it directly enters the crushing chamber 212 for crushing, without an additional conveying structure, reducing the floor space and achieving the effect of improving the recovery efficiency.

[0061] Specifically, referring to Figures 4 - 6 , this embodiment provides a tearing crusher 200, which includes a chassis 210, a blade assembly 220, a motor assembly 230, and a frame 240.

[0062] The frame 240 is fixed on the ground and plays a supporting role.

[0063] Referring to Figure 7 , the chassis 210 is fixed on the frame 240. The chassis 210 sequentially includes a tearing chamber 211, a crushing chamber 212, and a discharge chamber 213 that are interconnected from top to bottom.

[0064] A camera is provided on the top plate 85 of the tearing chamber 211. The camera facilitates workers to monitor the tearing situation in the tearing chamber 211.

[0065] A plurality of lining plates 214 are fixedly arranged on the inner wall surfaces of the tearing chamber 211 and the crushing chamber 212. The lining plate 214 is made of a high wear-resistant material, such as manganese steel. The lining plate 214 can effectively withstand the impact and wear generated when the high-speed rotating cutter 227 and hob 223 crush the material, and improve the service life of the tearing chamber 211 and the crushing chamber 212.

[0066] The crushing chamber 212 is arranged in a conical structure with both ends open. The large-diameter end of the crushing chamber 212 is connected to the bottom of the tearing chamber 211, and the small-diameter end of the crushing chamber 212 is connected to the top of the discharge chamber 213. The conical structure of the crushing chamber 212 is conducive to gradually reducing the distance between the hob 223 and the inner wall of the crushing chamber 212, so as to gradually improve the crushing effect of the hob 223 on the material, and make the torn and disintegrated material continuously rub against each other in the high-speed running hob 223 in the crushing chamber 212, thus gradually forming a tighter and tighter mass of material from top to bottom.

[0067] Referring to Figures 8 - 10, the blade assembly 220 includes a rotating shaft 224 that is rotatably disposed on the frame 240 and located on the axis of the crushing chamber 212. A cutter seat 221 and two hob disks 222 are fixedly arranged on the rotating shaft 224 from top to bottom in sequence. The cutter seat 221 is located within the tearing chamber 211 and is provided with a plurality of cutters 227 thereon. The rotating shaft 224 drives the plurality of cutters 227 to rotate to impact and tear the materials within the tearing chamber 211.

[0068] Both of the two hob disks 222 are located within the crushing chamber 212, and a plurality of hobs 223 are rotatably arranged on each hob disk 222 along the circumferential direction. The hob disk 222 drives the plurality of hobs 223 thereon to roll and extrude the materials located on the inner wall of the crushing chamber 212.

[0069] The motor assembly 230 is fixed on the frame 240, and the motor assembly 230 includes two motors 231 that are in transmission connection with the rotating shaft 224.

[0070] As the specific structure of the cutter seat 221, the cutter seat 221 includes a bottom plate 225 fixed on the rotating shaft 224. The bottom plate 225 is located at the connection of the tearing chamber 211 and the crushing chamber 212, and two mounting seats 226 that are perpendicular to each other are arranged on the bottom plate 225. Both of the two mounting seats 226 are fixed on the top of the rotating shaft 224, and one cutter 227 is fixed at each end of each mounting seat 226. The cutter 227 is used to impact and tear large materials.

[0071] As the specific structure of the frame 240, the frame 240 includes a first platform 241, a second platform 242, and a third platform 243. The second platform 242 is located between the first platform 241 and the second platform 242, and the height of the second platform 242 is greater than the height of the third platform 243, and the height of the third platform 243 is greater than the height of the first platform 241.

[0072] Fixed bearing seats 244 are arranged on both the second platform 242 and the bottom of the frame 240. The middle and bottom ends of the rotating shaft 224 are rotatably arranged on the second platform 242 and the bottom of the frame 240 respectively through the inner bearings of the two fixed bearing seats 244.

[0073] As the specific structure of the motor assembly 230, refer to Figure 7 , the motor assembly 230 includes two motors 231 that are respectively fixed on the first platform 241 and the second platform 242. Both of the two motors 231 are in belt transmission connection with the rotating shaft 224. Using two motors 231 as a redundant design improves the safety and reliability of power transmission, and the two motors 231 can jointly bear the load, reduce the load of each motor 231, and extend the service life of the motors 231.

[0074] In order to realize the belt transmission between the two motors 231 and the rotating shaft 224, a slave pulley 83 is provided on the rotating shaft 224 located below the second platform 242, and a plurality of pulley grooves are provided on the slave pulley 83; main pulleys 232 are provided on the output shafts of the two motors 231, and the two main pulleys 232 are connected to the slave pulley 83 through belts.

[0075] In order to prevent high temperature from affecting the lubricating performance of the bearing lubricant in the fixed bearing seat 244, the motor assembly 230 further includes a controller, which is electrically connected to the two motors 231 and the temperature probe 228. Figure 11 The temperature probe 228 is disposed on a fixed bearing seat 244 located at the bottom of the frame 240 and rotatably connected to the rotating shaft 224. The temperature probe 228 can detect the temperature of the fixed bearing seat 244. When the temperature of the fixed bearing seat 244 is high, the controller can automatically turn off the motor 231. The control of this implementation is preferably a PLC.

[0076] As a specific structure of the discharge chamber 213, a discharge port is arranged on the wall of the discharge chamber 213, and a scraper 215 seat fixed on the rotating shaft 224 is arranged in the discharge chamber 213, and two scrapers 215 for scraping the material to the discharge port are fixed on the scraper 215 seat. The arrangement of the scraper 215 facilitates the discharge of the material.

[0077] The discharge port of the material chamber is connected to the discharge hopper 216, and the top of the discharge hopper 216 is provided with an exhaust gas outlet. In order to avoid material blockage, refer to Figure 12 A star-shaped discharger 217 is provided at the bottom outlet of the discharge hopper 216. The star-shaped discharger 217 is of prior art, and its model may be YCD-HX.

[0078] In summary, the working principle of this embodiment is:

[0079] The disassembled refrigerator is placed in the tearing chamber 211, and the rotating shaft 224 drives the multiple cutters 227 to rotate and collide and tear the materials in the tearing chamber 211 into strips or blocks. The torn materials fall into the crushing chamber 212 from the gap between the tearing chamber 211 and the cutter seat 221. The roller disc 222 in the crushing chamber 212 drives the multiple rollers 223 thereon to roll, squeeze and crush the materials on the inner wall of the crushing chamber 212. The materials are further crushed under the shear force and kneading action of the rollers 223 and enter the discharge chamber 213. This embodiment integrates the tearing machine and the crushing machine into one, which not only reduces the occupied space, but also does not require material transmission, thereby improving the recycling efficiency.

[0080] Example 3

[0081] This embodiment further limits on the basis of the embodiment. The specific improvement lies in how to set the specific structure of the foam grinding machine 800, and for the parts not mentioned, refer to Embodiment 1 or the prior art.

[0082] In the prior art, in general, the foam recycling device does not classify and recycle foam and plastics. Even if the fragments of the mixture of foam and plastics are collided and separated in the serpentine channel and the foam fragments are sucked away by the negative pressure blower, since the fragments of the mixture of foam and plastics are not ground, the fragments of the foam are relatively large, resulting in the problem that the recycling effect of the foam is still limited.

[0083] To solve the problem that the foam recycling device in the prior art has a limited recycling effect on foam, this embodiment grinds the foam mixture through the inner rubbing plate 89 and the outer rubbing plate 810, thereby further reducing the volume of the foam therein, increasing the weight difference between the foam and the plastics, and finally recovering through the negative pressure recovery hopper 815, achieving the technical effect of improving the recycling amount and recycling purity of the foam and the plastics.

[0084] Specifically, referring to Figure 13 and Figure 14 , this embodiment provides a foam grinding machine 800, including a bracket 811, a grinding machine main body 88 and a negative pressure recovery hopper 815.

[0085] A platform 820 is arranged on the bracket 811, and the bracket 811 is a four-corner bracket 811 structure, and a staircase 821 for leading to the platform 820 is arranged on the bracket 811. The arrangement of the staircase 821 facilitates workers to get on and off the platform 820. Guardrails 819 are arranged on the edges of the platform 820.

[0086] The grinding machine main body 88 includes a material cylinder 87 fixed on the upper surface of the platform 820. Four observation windows are evenly arranged on the outer wall of the material cylinder 87 in the circumferential direction. The arrangement of the observation windows facilitates workers to view the internal structure of the material cylinder 87.

[0087] A feeding shaft 86 is rotatably arranged in the material cylinder 87. An inner rubbing plate 89 is fixed on the feeding shaft 86, and an outer rubbing plate 810 is fixed on the inner wall of the material cylinder 87. The feeding shaft 86 is used to send the foam mixture in the material cylinder 87 into the gap between the inner rubbing plate 89 and the outer rubbing plate 810 for grinding.

[0088] The negative-pressure recovery air hopper 815 is used for classifying foam and plastics. The negative-pressure recovery air hopper 815 is fixed on the lower surface of the platform 820. The negative-pressure recovery air hopper 815 includes a conical hopper 814, and the top of the conical hopper 814 communicates with the barrel 87. A plastic recovery port is provided at the bottom of the negative-pressure recovery air hopper 815, and a foam recovery pipe 816 for recovering foam by negative pressure is inclined on the side wall of the negative-pressure recovery air hopper 815. A blower for forming negative pressure is provided inside the negative-pressure recovery air hopper 815. To facilitate the connection between the negative-pressure recovery air hopper 815 and the barrel 87, a conical cylinder 812 is fixed at the feed inlet of the conical hopper 814. The large-diameter end of the conical cylinder 812 is fixed on the platform 820 and is used to connect to the bottom end of the barrel 87. The conical cylinder 812 includes multiple connecting plates 813 in the shape of isosceles trapezoids, and the adjacent sides between the multiple connecting plates 813 are welded.

[0089] As a specific structure in which the feed shaft 86 is rotatably arranged in the barrel 87, a feed pipe 818 and a drive motor 81 are provided on the top plate 85 of the barrel 87, and the output shaft of the drive motor 81 is connected to the feed shaft 86 by belt drive. Belt drive can absorb a certain degree of shock and load variation, which is beneficial to extending the service life of the grinder main body 88.

[0090] For the specific belt drive structure, a support 82 is provided on the top plate 85 of the barrel 87. The drive motor 81 is vertically fixed on the support 82. A main pulley 232 is provided on the output shaft of the drive motor 81. The feed shaft 86 is rotatably arranged in the barrel 87 through two support bearing seats 84 located on the top plate 85 and the platform 820 respectively. The upper end of the feed shaft 86 passes through the support bearing seat 84 on the barrel 87 and is fixedly connected to the driven pulley 83. The main pulley 232 and the driven pulley 83 are connected by a belt. The diameter of the driven pulley 83 is larger than that of the main pulley 232, and in order to protect the driven pulley 83, a protective cover 817 is provided on the top plate 85 of the barrel 87.

[0091] In this embodiment, the bearing in the support bearing seat 84 is a double-row self-aligning bearing. The double-row self-aligning bearing is beneficial to handling the skew or axial offset of the bearing and the shaft, can self-adjust, reduce vibration and noise caused by deviation, and protect the service life of the belt drive structure.

[0092] In order to enable the foam mixture to continuously enter the gap between the inner rubbing plate 89 and the outer rubbing plate 810, the feed shaft 86 is conical. The small-diameter end of the feed shaft 86 located outside the barrel 87 is connected to the drive motor 81, and a spiral blade is provided on the outer wall of the feed shaft 86. The conical shape design can effectively distribute the foam mixture evenly, so that the foam mixture is not easily piled up or blocked during the feeding process. The presence of the spiral blade can further push the foam mixture downward to ensure continuous and uniform feeding.

[0093] In order to move the foam mixture to the negative pressure recovery scoop 815 after grinding, the inner rubbing plate 89 and the outer rubbing plate 810 are respectively an outer gear ring structure and an inner gear ring structure, and the inner rubbing plate 89 is fixed on the large diameter end of the feed shaft 86. The outer gear on the inner rubbing plate 89 and the inner gear on the outer rubbing plate 810 are both helical gears.

[0094] In order to facilitate the installation and removal of the inner washboard 89 and the outer washboard 810, refer to Figure 15 and Figure 16 The inner rubbing plate 89 and the outer rubbing plate 810 respectively include multiple outer gear ring plates and inner gear ring plates, each outer gear ring plate and each inner gear ring plate are provided with at least two connecting holes, and each outer gear ring plate and each inner gear ring plate are respectively bolted to the feeding shaft 86 and the barrel 87 through the connecting holes.

[0095] In summary, the working principle of this embodiment is:

[0096] The second Z-type separator 622 conveys the foam mixture to the barrel 87, and the feed shaft 86 conveys the foam mixture to the gap between the inner washboard 89 and the outer washboard 810, while the feed shaft 86 drives the inner washboard 89 to rotate relative to the outer washboard 810. The foam in the foam mixture is relatively loose in structure and consists of many bubbles, which can be easily broken into foam particles under the mechanical force of the inner washboard 89 and the outer washboard 810. The plastic in the foam mixture has a higher density and strength. Therefore, under the same grinding conditions, the plastic is not ground into particles like the foam, so the plastic is still in block shape. The block plastic and foam particles enter the negative pressure recovery hopper 815. The weight of the foam particles is much less than that of the block plastic. The negative pressure recovery hopper 815 can obtain foam particles with higher purity through negative pressure.

[0097] Compared with the existing foam recycling device which only separates the mixed foam and plastic fragments by collision in the serpentine channel, the present solution adopts the inner rubbing board 89 and the outer rubbing board 810 to further reduce the volume of the foam, increase the weight difference between the foam and the plastic, and improve the recycling amount and recycling purity of the foam and plastic.

[0098] Although the specific implementation of the utility model is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. A refrigerator disassembly and recycling line, characterized in that: It comprises a pre-disassembly platform (100) for manually disassembling a refrigerator, a tearing and crushing machine (200) for tearing and crushing the refrigerator, a vibrating screen (400) for separating a foam plastic mixture from metal, an eddy current separator (700) for separating copper and aluminum, and copper and aluminum sorting equipment (710) which are sequentially connected by a conveyor belt; A magnetic iron separator (500) for separating iron is arranged on the top of the vibrating screen (400), a negative pressure feed pipe (818) of a cyclone separator assembly (600) is arranged at the foam-plastic mixture outlet of the vibrating screen (400), the cyclone separator assembly (600) is used to separate plastic and foam, and the foam outlet of the cyclone separator assembly (600) is connected to the feed inlet of the volume reducer (900); The exhaust ports of the tearing crusher (200), the cyclone separator assembly (600) and the volume reducer (900) are all connected to the air inlet of the waste gas treatment device (300), and activated carbon is arranged inside the waste gas treatment device (300).

2. The refrigerator disassembly and recycling line according to claim 1, characterized in that: The waste gas treatment equipment (300) comprises a first dust collector (311) and a second dust collector (321), wherein the air outlets of the first dust collector (311) and the second dust collector (321) are respectively connected to the air inlets of the first activated carbon adsorption box (312) and the second activated carbon adsorption box (322); and the air outlets of the first activated carbon adsorption box (312) and the second activated carbon adsorption box (322) are both connected to the chimney (330); The air inlet of the first dust collector (311) is connected to the exhaust port of the tearing crusher (200), and the air inlet of the second dust collector (321) is connected to the exhaust ports of the cyclone separator assembly (600) and the volume reducer (900).

3. The refrigerator disassembly and recycling line according to claim 2, characterized in that: An air suction hood (110) is provided at the Freon extraction station on the pre-disassembly platform (100), the air suction hood (110) is used to extract Freon, and the air outlet of the air suction hood (110) is connected to the air inlet of the second dust collector (321).

4. The refrigerator disassembly and recycling line according to claim 2, characterized in that: The tearing and crushing machine (200) comprises: a chassis (210), the chassis (210) being fixed on a frame (240), the chassis (210) comprising, from top to bottom, a tearing chamber (211), a crushing chamber (212) and a discharging chamber (213) which are interconnected; the discharging port of the discharging chamber (213) is connected to a discharging hopper (216), and the top of the discharging hopper (216) is provided with an exhaust gas outlet which is connected to an air inlet of the first dust collector (311); A blade assembly (220), the blade assembly (220) comprising a rotating shaft (224) rotatably arranged on a frame (240) and located on the central axis of the crushing chamber (212); a cutter seat (221) and two roller cutter discs (222) are fixed on the rotating shaft (224) in order from top to bottom; the cutter seat (221) is located in the tearing chamber (211) and is provided with a plurality of cutters (227); the rotating shaft (224) drives the plurality of cutters (227) to rotate to collide and tear the materials in the tearing chamber (211); the two roller cutter discs (222) are both located in the crushing chamber (212), and each of the roller cutter discs (222) is provided with a plurality of roller cutters (223) rotatably arranged in a circumferential direction; the roller cutter disc (222) drives the plurality of roller cutters (223) thereon to roll, extrude and crush the materials located on the inner wall of the crushing chamber (212); A motor assembly (230) is fixed on the frame (240), and the motor assembly (230) includes at least one motor (231) drivingly connected to the rotating shaft (224).

5. The refrigerator disassembly and recycling line according to claim 4, characterized in that: The cutter seat (221) comprises a bottom plate (225) fixed on the rotating shaft (224); the bottom plate (225) is located at the connection point between the tearing chamber (211) and the crushing chamber (212); and two mounting seats (226) arranged perpendicular to each other are arranged on the bottom plate (225); the two mounting seats (226) are both fixed on the top of the rotating shaft (224); and one of the cutters (227) is fixed on both ends of each mounting seat (226).

6. The refrigerator disassembly and recycling line according to claim 1, characterized in that: The cyclone separator assembly (600) comprises a first cyclone separator (611) and a first Z-type separator (612) which are connected to each other. The first cyclone separator (611) conveys the foam-plastic mixture to a curved pipe in the first Z-type separator (612) to separate the foam and the plastic.

7. The refrigerator disassembly and recycling line according to claim 6, characterized in that: The cyclone separator assembly (600) further comprises a second cyclone separator (621) and a second Z-type separator (622) which are arranged in communication with each other; the negative pressure feed pipes (818) of the first cyclone separator (611) and the second cyclone separator (621) are respectively arranged at the foam-plastic mixture outlets of the vibrating screen (400) and the eddy current separator (700); the feed port of the second Z-type separator (622) is respectively communicated with the discharge port of the second cyclone separator (621) and the plastic discharge port of the first Z-type separator (612); the discharge port of the second Z-type separator (622) is communicated with the feed port of a foam grinder (800) for separating foam and plastic; and the foam discharge port on the foam grinder (800) is communicated with the feed port of the volume reducer (900).

8. The refrigerator disassembly and recycling line according to claim 7, characterized in that: The foam grinding machine (800) comprises: a bracket (811), and a platform (820) is arranged on the bracket (811); A grinding machine body (88), the grinding machine body (88) comprising a barrel (87) fixed on the upper surface of the platform (820), a feeding shaft (86) rotatably arranged in the barrel (87), an inner rubbing plate (89) fixed on the feeding shaft (86), an outer rubbing plate (810) fixed on the inner wall of the barrel (87), the feeding shaft (86) being used to feed the foam mixture in the barrel (87) into the gap between the inner rubbing plate (89) and the outer rubbing plate (810) for grinding; A negative pressure recovery hopper (815) is used to classify foam and plastic. The negative pressure recovery hopper (815) is fixed on the lower surface of the platform (820) and is connected to the barrel (87). A foam recovery pipe (816) for recovering foam by negative pressure is obliquely arranged on the side wall of the negative pressure recovery hopper (815). The foam discharge port of the foam recovery pipe (816) is connected to the feed port of the volume reducer (900).

9. The refrigerator disassembly and recycling line according to claim 8, characterized in that: The feeding shaft (86) is conical in shape, and the small-diameter end of the feeding shaft (86) located outside the barrel (87) is connected to the driving motor (81), and a spiral blade is arranged on the outer wall of the feeding shaft (86).

10. The refrigerator disassembly and recycling line according to claim 9, characterized in that: The inner rubbing plate (89) and the outer rubbing plate (810) are respectively an outer gear ring structure and an inner gear ring structure. The inner rubbing plate (89) is fixed on the large diameter end of the feeding shaft (86), and the outer gear on the inner rubbing plate (89) and the inner gear on the outer rubbing plate (810) are both helical gears.

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