Dedusting fresh air circulation system of refrigerator recovery line

Abstract

The invention relates to the technical field of waste equipment recovery, in particular to a refrigerator recovery line dedusting fresh air circulation system which comprises a conveying belt mechanism, a double-shaft shredding machine, a dedusting mechanism, a second conveying belt mechanism, a waste gas exhaust pipe and a waste gas backflow pipe. The bottom of the double-shaft shredding machine is connected with the end of a waste gas exhaust pipe, the other end of the waste gas exhaust pipe is connected with a dust removal mechanism, the dust removal mechanism is connected with the end of a waste gas backflow pipe, and the output end of the waste gas backflow pipe and the output end of the double-shaft shredding machine face the input end of the second conveying belt mechanism. By arranging the dust removal mechanism, the waste gas exhaust pipe and the waste gas return pipe, the use amount of fresh air can be reduced when the double-shaft shredding machine works, meanwhile, waste gas can be purified for multiple times, gas exhausted by the device reaches the international emission index, and the waste gas treatment capacity of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste equipment recycling, and in particular to a dust removal and fresh air circulation system for a refrigerator recycling line. Background Art

[0002] Refrigerator recycling has great economic significance and plays a significant role in environmental protection. By recycling used refrigerators, we can not only maximize resource utilization, but also promote the continuous standardization and automation of industrial equipment.

[0003] However, the existing refrigerator recycling technology still has shortcomings in its implementation. That is, when dismantling old refrigerators, a large amount of waste gas will be generated. Although it has been treated, it still does not meet international waste gas emission standards. Summary of the Invention

[0004] The present invention provides a dust removal and fresh air circulation system for a refrigerator recycling line, which is used to solve the problem raised in the background technology.

[0005] In order to achieve the above-mentioned purpose of the invention, the present invention provides the following technical solutions: a dust removal and fresh air circulation system for a refrigerator recycling line, comprising: a conveyor belt mechanism, a double-shaft shredder, a dust removal mechanism, a second conveyor belt mechanism, an exhaust gas exhaust pipe and an exhaust gas return pipe, the output end of the conveyor belt mechanism is arranged toward the input end of the double-shaft shredder, the bottom of the double-shaft shredder is connected to the end of the exhaust gas exhaust pipe, the other end of the exhaust gas exhaust pipe is connected to the dust removal mechanism, the dust removal mechanism is connected to the end of the exhaust gas return pipe, and the output end of the exhaust gas return pipe and the output end of the double-shaft shredder are both arranged toward the input end of the conveyor belt mechanism.

[0006] Preferably, the exhaust gas return pipe is connected to an axial fan.

[0007] Preferably, it further includes a second exhaust gas exhaust pipe, the input end of which is arranged above the conveyor belt mechanism, and the other end of the second exhaust gas exhaust pipe is connected to the dust removal mechanism.

[0008] Preferably, the output end of the conveyor belt mechanism 2 is arranged toward the input end of the vertical crusher, the top of the vertical crusher is connected to the input end of the exhaust gas exhaust pipe 3, the other end of the exhaust gas exhaust pipe 3 is connected to the dust removal mechanism, the dust removal mechanism is connected to the end of the exhaust gas return pipe 2, the output end of the exhaust gas return pipe 2 and the input end of the vibrating feeder are both arranged toward the output end of the vertical crusher, the bottom of the vertical crusher is connected to the end of the foam exhaust pipe, the foam exhaust pipe is connected to a sorting machine and an auxiliary fan, and the other end of the foam exhaust pipe is connected to a foam volume reduction machine.

[0009] Preferably, the second exhaust gas return pipe is connected to a second axial fan.

[0010] Preferably, the output end of the vibrating feeder is arranged toward the input end of the conveyor belt mechanism three, the output end of the conveyor belt mechanism three is arranged toward the input end of the foam volume reduction machine, the foam volume reduction machine is connected to the input end of the exhaust gas exhaust pipe four, the other end of the exhaust gas exhaust pipe four is connected to the sorting machine, the foam volume reduction machine is connected to the input end of the exhaust gas return pipe three, the other end of the exhaust gas return pipe three is connected to the dust removal mechanism, and the exhaust gas return pipe three is connected to the axial fan three.

[0011] Preferably, the output end of the foam volume reducer is arranged toward the guide plate.

[0012] Preferably, the dust removal mechanism includes: a pulse dust collector, a main air duct, a filter, a main fan, a main exhaust gas return pipe and an auxiliary exhaust gas return pipe. The other ends of the exhaust gas exhaust pipe, exhaust gas exhaust pipe 2, exhaust gas exhaust pipe 3 and exhaust gas exhaust pipe 4 are all connected to the main air duct, the main air duct is connected with a pulse dust collector and a filter, the other end of the main air duct is connected to the input end of the main fan, the output end of the main fan is connected to the end of the main exhaust gas return pipe, the main exhaust gas return pipe is connected with the end of the auxiliary exhaust gas return pipe, the other end of the auxiliary exhaust gas return pipe is arranged away from the pulse dust collector, and the other ends of the exhaust gas return pipe, exhaust gas return pipe 2 and exhaust gas return pipe 3 are all connected to the main exhaust gas return pipe.

[0013] Preferably, the magnetic mechanism includes: a mounting frame, a conveyor belt, a roller, a driving member and a magnetic attraction component. The conveyor belt mechanism is connected to a mounting frame, two rollers are rotatably connected to the mounting frame, the end of one roller is connected to the output end of the driving member, the driving member is connected to the mounting frame, a magnetic attraction component is provided on the mounting frame, the magnetic attraction component is arranged between the conveyor belts, the inner wall of the conveyor belt is frictionally engaged with the side walls of the two rollers, a plurality of auxiliary rollers are rotatably connected to the mounting frame, and the side walls of the auxiliary rollers are frictionally engaged with the inner wall of the conveyor belt.

[0014] Preferably, the magnetic attraction component includes: a shell, an iron core column, an air intake pipe, and an exhaust gas return pipe. The mounting frame is connected to the shell, and a plurality of iron core columns are connected to the bottom wall of the shell. A coil is mounted on each iron core column. One side of the shell is connected to the air intake pipe, and the other side of the shell is connected to the end of the exhaust gas return pipe. The other end of the exhaust gas return pipe is arranged toward the output end of the conveyor belt, and the output end of the conveyor belt is arranged toward the top opening of the guide pipe. The bottom opening of the guide pipe is arranged away from the mounting frame. The air intake pipe is connected to an air pump, and a pulley is connected to the output shaft of the air pump. The pulley is connected to pulley 2 through a belt, and pulley 2 is connected to an auxiliary roller.

[0015] The beneficial effects of the present invention are as follows:

[0016] In the solution of the present invention:

[0017] The device is equipped with a dust removal mechanism, an exhaust gas exhaust pipe and an exhaust gas return pipe, which can not only increase the amount of new air used when the double-shaft shredder is working, but also purify the exhaust gas multiple times, so that the gas emitted by the device itself meets the international emission standards, thereby improving the device's waste gas treatment capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the installation position of the vibrating feeder of the present invention;

[0020] Figure 3 This is a schematic diagram of the installation position of the eddy current separator of the present invention;

[0021] Figure 4 This is a schematic diagram of the installation position of the extruder of the present invention;

[0022] Figure 5 It is a schematic structural diagram of the dust collector of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the magnetic suction machine of the present invention;

[0024] Figure 7 is a cross-sectional view of the magnetic suction machine of the present invention;

[0025] Figure 8 Schematic diagram of the connection between the air intake pipe and the air pump of the present invention;

[0026] Figure 9 Schematic diagram of the transmission connection relationship between the pulley, belt and pulley 2 of the present invention;

[0027] Figure 10 Schematic diagram of the connection relationship between the sprocket, chain and sprocket 2 of the present invention;

[0028] Figure 11 Schematic diagram of the connection between the air intake pipe and the filter screen of the present invention;

[0029] Figure 12 Schematic diagram of the relative position relationship between the driving arc and the adjustment plate of the present invention;

[0030] Figure 13 A schematic diagram of the locations of the air guide holes on the mounting column of the present invention;

[0031] Figure 14 This is a schematic diagram of the sliding connection between the gas storage tank and the piston ring of the present invention;

[0032] Figure 15 Schematic diagram of the connection relationship between the connecting rod 2 and the rubber sheet of the present invention.

[0033] Among them: conveyor belt mechanism 1, double-shaft shredder 2, dust removal mechanism 3, conveyor belt mechanism 2 4, exhaust gas exhaust pipe 5, exhaust gas return pipe 6, axial fan 7, exhaust gas exhaust pipe 2 8, vertical crusher 9, exhaust gas exhaust pipe 3 10, exhaust gas return pipe 2 11, axial fan 2 12, vibrating feeder 13, conveyor belt mechanism 3 14, foam volume reduction machine 15, exhaust gas exhaust pipe 4 16, exhaust gas return pipe 3 17, axial fan 3 18, guide plate 19, pulse dust collector 20, main air duct 21, filter 22, main fan 23, main exhaust gas return pipe 24, auxiliary exhaust gas return pipe 25, mounting frame 26, conveyor belt 27, roller 28, auxiliary roller 29, shell 3 0, iron core column 31, air inlet pipe 32, air outlet pipe 33, guide pipe 34, connecting rod 2 35, air pump 36, output shaft 37, pulley 38, belt 39, pulley 2 40, drive motor 41, sprocket 42, chain 43, sprocket 2 44, filter 45, mounting plate 46, spring 47, mounting plate 2 48, drive arc 49, adjustment plate 50, connecting rod 51, adjustment pipe 52, mounting column 53, air guide hole 54, spring 2 55, air storage pipe 56, air storage tank 57, piston ring 58, spring 3 59, exhaust gas exhaust pipe 2 60, sorting machine 61, collecting hopper 62, auxiliary fan 63, pressure reducing pipe 64, exhaust gas exhaust pipe 5 65, rubber sheet 66. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0035] Example 1: Reference Figures 1-15 A dust removal and fresh air circulation system for a refrigerator recycling line includes: a conveyor belt mechanism 1, a double-shaft shredder 2, a dust removal mechanism 3, a conveyor belt mechanism 2 4, an exhaust gas exhaust pipe 5 and an exhaust gas return pipe 6. The output end of the conveyor belt mechanism 1 is arranged toward the input end of the double-shaft shredder 2, the bottom of the double-shaft shredder 2 is connected to the end of the exhaust gas exhaust pipe 5, the other end of the exhaust gas exhaust pipe 5 is connected to the dust removal mechanism 3, and the dust removal mechanism 3 is connected to the end of the exhaust gas return pipe 6. The output end of the exhaust gas return pipe 6 and the output end of the double-shaft shredder 2 are both arranged toward the input end of the conveyor belt mechanism 2 4.

[0036] The principles and beneficial effects of the above scheme are:

[0037] After being disassembled by the compressor, the used refrigerator is placed on the conveyor belt mechanism 1 and transported to the double-shaft shredder 2 for shredding. The foam in the insulation layer of the refrigerator will produce cyclopentane, Freon and dust. The dust removal mechanism 3 sucks and treats the above-mentioned exhaust gas at the bottom of the double-shaft shredder 2 through the exhaust gas exhaust pipe 5, and then inputs the treated gas into the double-shaft shredder 2 again through the exhaust gas return pipe 6. At this time, the double-shaft shredder 2 collects clean air through its input end and the exhaust gas return pipe 6, reducing the amount of new air sucked in.

[0038] The device is provided with a dust removal mechanism 3, an exhaust gas exhaust pipe 5 and an exhaust gas return pipe 6, which can not only reduce the amount of new air used when the double-shaft shredder 2 is working, but also purify the exhaust gas multiple times to reduce the total amount of exhaust gas emissions, so that the gas emitted by the device itself meets the international emission standards, thereby improving the device's exhaust gas treatment capacity;

[0039] At the same time, since the waste gas return pipe 6 discharges the treated waste gas, the negative pressure in the waste gas exhaust pipe 5 connected to the double-shaft shredder 2 can prevent the treated waste gas from being directly discharged to the outside, thereby avoiding waste gas leakage when the device is working;

[0040] Furthermore, since the dust removal mechanism 3 is provided in the device, the waste gas generated when the old refrigerator is dismantled can be directly discharged into the external environment after being treated, thereby avoiding pollution to the surrounding environment during operation.

[0041] Example 2: Reference Figures 1-15 The exhaust gas return pipe 6 is connected to an axial fan 7.

[0042] The principles and beneficial effects of the above scheme are:

[0043] When the treated waste gas is discharged, the axial fan 7 increases the gas pressure during discharge; further, the gas output by the axial fan 7 can be used to blow air again on the scraps of the waste refrigerator, so as to further release the dust or impurities therein into the interior of the double-shaft shredder 2 and transport them to the dust removal mechanism 3 through the waste gas exhaust pipe 5 for treatment.

[0044] Example 3: Reference Figures 1-15 , and also includes an exhaust gas exhaust pipe 2 8, the input end of the exhaust gas exhaust pipe 2 8 is arranged above the conveyor belt mechanism 1, and the other end of the exhaust gas exhaust pipe 2 8 is connected to the dust removal mechanism 3.

[0045] The principles and beneficial effects of the above scheme are:

[0046] When dismantling a used refrigerator, the refrigerant device needs to be processed, that is, the compressor components are first disassembled to prevent the refrigerant from being released into the air and causing air pollution. At this time, the main exhaust gas generated by the disassembly is air with a large amount of dust. The dust on the conveyor belt mechanism 1 is sucked through the exhaust gas exhaust pipe 2 8 to achieve the purpose of preliminary purification of the used refrigerator. The used refrigerator is then transported through the conveyor belt mechanism 1 and then crushed to avoid generating a large amount of dust when the used refrigerator is shredded.

[0047] Example 4: Reference Figures 1-15 The output end of the conveyor belt mechanism 24 is arranged toward the input end of the vertical crusher 9. The top of the vertical crusher 9 is connected to the input end of the exhaust gas exhaust pipe 3 10. The other end of the exhaust gas exhaust pipe 3 10 is connected to the dust removal mechanism 3. The dust removal mechanism 3 is connected to the end of the exhaust gas return pipe 2 11. The output end of the exhaust gas return pipe 2 11 and the input end of the vibrating feeder 13 are both arranged toward the output end of the vertical crusher 9. The bottom of the vertical crusher 9 is connected to the end of the foam exhaust gas exhaust pipe 2 60. The foam exhaust gas exhaust pipe 2 60 is connected to a sorting machine 61 and an auxiliary fan 63. The other end of the foam exhaust gas exhaust pipe 2 60 is connected to a collecting hopper 62.

[0048] The bottom of the collecting hopper 62 is connected to a compressor, the top of the collecting hopper 62 is connected to the end of a pressure reducing pipe 64, the other end of the pressure reducing pipe 64 is connected to the sorting machine 61, and the top of the sorting machine 61 is connected to the dust removal mechanism 3 through the exhaust pipe 5 65.

[0049] The exhaust gas return pipe 2 11 is connected to an axial fan 2 12 .

[0050] The principles and beneficial effects of the above scheme are:

[0051] The vertical crusher 9 and the double-shaft shredder 2 have different crushing effects. The double-shaft shredder 2 can shred objects with large volume and high structural strength, while the vertical crusher 9 can shred small objects. The cooperation between the vertical crusher 9 and the double-shaft shredder 2 can completely crush the waste refrigerator and increase the probability of separating the metal material from other materials in the waste refrigerator, which is convenient for the next step of metal material recycling.

[0052] The debris crushed by the vertical crusher 9 is transported by the vibrating feeder 13. When being transported by the vibrating feeder 13, the metal material is further separated from other materials. When the vertical crusher 9 is crushing, the exhaust gas exhaust pipe 3 10 recovers the exhaust gas. The exhaust gas return pipe 2 11 inputs the gas filtered by the dust removal mechanism 3 to the vibrating feeder 13 and the output end of the vertical crusher 9, blowing away the dust or exhaust gas in the debris, further improving the exhaust gas cleaning effect;

[0053] When the vertical crusher 9 further crushes the larger debris, the foam used as insulation material in the waste refrigerator is separated. Under the action of the gas provided by the axial fan 2 12, when the gas blows the debris through the exhaust gas return pipe 2 11, the foam can enter the foam exhaust gas exhaust pipe 2 60 due to its light weight. After passing through the sorting machine 61 and the auxiliary fan 63, the foam enters the collecting hopper 62 and, under the action of gravity, enters the compressor connected to the bottom of the collecting hopper 62 for unified compression and volume reduction processing. This avoids the foam from occupying a large space for storage after the waste refrigerator is crushed, thereby improving the efficiency of storage and transportation of waste foam.

[0054] When the collecting hopper 62 recycles the foam scraps, the dust remaining on the foam will be retained in the collecting hopper 62 due to the electrostatic effect or the adsorption of dust. The dust enters the sorting machine 61 through the pressure reducing pipe 64, and then enters the dust removal mechanism 3 through the exhaust pipe 5 65. The sorting machine 61 uses the cyclone separation principle to separate the dust and air. Therefore, after its operation, the preliminarily treated exhaust gas can be discharged to the dust removal mechanism 3, reducing the load of the dust removal mechanism 3 during operation.

[0055] The treatment of dust in the collecting hopper 62 prevents dust from entering the compressor, which not only enables the device to meet environmental protection requirements when working, but also prevents the increased wear between the parts of the compressor when working, thereby extending its service life. Further treatment of dust can prevent the compressor from overheating. Since the compressor itself releases heat when squeezing objects when working, although the compressor is designed with relevant components to cool down and prevent the device from overheating, the accumulated dust will still reduce the heat dissipation effect. Therefore, cleaning the dust in the collecting hopper 62 can further ensure the normal heat dissipation of the compressor to extend its service life, further reduce the number of cleanings and the difficulty of cleaning the compressor, and realize an efficient and environmentally friendly working process of the device. The specific model of the compressor is: GREENMAX EPE pearl cotton foam compressor ZEUS-C100.

[0056] Example 5: Reference Figures 1-15 The output end of the vibrating feeder 13 is arranged toward the input end of the conveyor belt mechanism three 14, and the output end of the conveyor belt mechanism three 14 is arranged toward the input end of the eddy current separator 15. The conveyor belt mechanism three 14 is connected to a magnetic attraction mechanism, and the eddy current separator 15 is connected to the input end of the exhaust gas exhaust pipe four 16. The other end of the exhaust gas exhaust pipe four 16 is connected to the dust removal mechanism 3. The eddy current separator 15 is connected to the input end of the exhaust gas return pipe three 17. The other end of the exhaust gas return pipe three 17 is connected to the dust removal mechanism 3, and the exhaust gas return pipe three 17 is connected to the axial fan three 18.

[0057] The principles and beneficial effects of the above scheme are:

[0058] After the debris is output from the vibrating feeder 13, it enters the eddy current separator 15 through the conveyor belt mechanism 3 14. At this time, only metal is left in the debris. The principle of the eddy current separator 15 is to form an alternating magnetic field inside, and use the difference in conductivity between copper and aluminum to bounce them off under the action of the magnetic field. The different flight distances complete the copper and aluminum separation and are then recycled in different categories. At this time, a small amount of dust in the debris will enter the exhaust pipe 4 16 and enter the separator 61 for unified collection, further improving the environmental protection effect and reducing the load of the eddy current separator 15 during operation. At the same time, dust is prevented from damaging the internal parts of the eddy current separator 15.

[0059] Example 6: Reference Figures 1-15 The output end of the bottom of the eddy current separator 15 is arranged toward the guide plate 19 .

[0060] The principles and beneficial effects of the above scheme are:

[0061] The sorted copper and aluminum are discharged to the guide plate 19 through the output end of the eddy current separator 15. After being guided by the guide plate 19, the copper and aluminum can be classified, recycled and transported by a hopper or other storage device, and then subjected to secondary processing.

[0062] Example 7: Reference Figures 1-15 The dust removal mechanism 3 includes: a pulse dust collector 20, a main air duct 21, a filter 22, a main fan 23, a main exhaust gas return pipe 24 and an auxiliary exhaust gas return pipe 25. The other ends of the exhaust gas exhaust pipe 5, the exhaust gas exhaust pipe 28, the exhaust gas exhaust pipe 3 10 and the exhaust gas exhaust pipe 4 16 are all connected to the main air duct 21. The main air duct 21 is connected with the pulse dust collector 20 and the filter 22. The other end of the main air duct 21 is connected to the input end of the main fan 23. The output end of the main fan 23 is connected to the end of the main exhaust gas return pipe 24. The main exhaust gas return pipe 24 is connected with the end of the auxiliary exhaust gas return pipe 25. The other end of the auxiliary exhaust gas return pipe 25 is set away from the pulse dust collector 20. The other ends of the exhaust gas return pipe 6, the exhaust gas return pipe 2 11 and the exhaust gas return pipe 3 17 are all connected to the main exhaust gas return pipe 24.

[0063] The principles and beneficial effects of the above scheme are:

[0064] When the dust removal mechanism 3 is working, the dust and cyclopentane in the device enter the main air duct 21 through the exhaust gas exhaust pipe 5, the exhaust gas exhaust pipe 28, the exhaust gas exhaust pipe 3 10 and the exhaust gas exhaust pipe 4 16. The negative pressure generated by the main air duct 23 facilitates the suction of dust and cyclopentane in the main air duct 21, and the cyclopentane is absorbed in the filter 22. The dust passes through the pulse dust collector 20 and the filter 22 in the main air duct 21 in turn, and then enters the main exhaust gas return pipe 24. At this time, most of the treated exhaust gas connected to the main exhaust gas return pipe 24 is discharged through the auxiliary exhaust gas return pipe 25, and the remaining treated exhaust gas is output through the exhaust gas return pipe 6, the exhaust gas return pipe 2 11 and the exhaust gas return pipe 3 17 respectively, which reduces the difficulty of exhaust gas treatment.

[0065] Example 8: Reference Figures 1-15 The magnetic attraction mechanism includes: a mounting frame 26, a conveyor belt 27, a roller 28, a driving member and a magnetic attraction component. The conveyor belt mechanism 3 14 is connected to a mounting frame 26, and two rollers 28 are rotatably connected to the mounting frame 26. The end of one roller 28 is connected to the output end of the driving member, and the driving member is connected to the mounting frame 26. A magnetic attraction component is provided on the mounting frame 26, and the magnetic attraction component is arranged between the conveyor belts 27. The inner wall of the conveyor belt 27 is frictionally engaged with the side walls of the two rollers 28. A plurality of auxiliary rollers 29 are rotatably connected to the mounting frame 26, and the side walls of the auxiliary rollers 29 are frictionally engaged with the inner wall of the conveyor belt 27.

[0066] The principles and beneficial effects of the above scheme are:

[0067] The metal scraps transported to the conveyor belt mechanism three 14 by the vibrating feeder 13 contain iron scraps. In order to improve the recycling efficiency of metals, a magnetic mechanism is connected to the conveyor belt mechanism three 14. The mounting frame 26 of the magnetic mechanism is connected to the conveyor belt mechanism three 14. When it is necessary to recycle iron, the driving member and the magnetic assembly are started. The driving member drives the roller 28 to rotate, and the roller 28 drives another roller 28 to rotate through the conveyor belt 27. The magnetic end of the magnetic assembly is set toward the conveyor belt mechanism three 14. Therefore, the iron scraps in the scraps will be magnetically attracted to the bottom of the conveyor belt 27, and the moving iron scraps will move to the top of the conveyor belt 27 through the conveyor belt 27. When they move to the output end of the magnetic mechanism, they are uniformly collected. The collection can not only improve the recycling efficiency of iron chips, but also prevent iron chips from entering the eddy current separator 15. Since the eddy current separator 15 cannot sort iron chips, the iron chips entering it will accumulate inside the eddy current separator 15. Therefore, the iron chips are separated in advance in the conveyor belt mechanism 3 14, which can avoid the internal parts of the eddy current separator 15 from being damaged during operation. At the same time, it can avoid the accumulation of iron chips in the eddy current separator 15 to cause blockage, making it impossible to sort and recycle copper and aluminum debris, thereby improving the rationality of the device setting, ensuring that the device works in a safe state, avoiding frequent shutdowns for inspection and maintenance of the device, and further improving the working efficiency of the device.

[0068] Example 9: Reference Figures 1-15 The magnetic attraction component includes: a shell 30, an iron core column 31, an air inlet pipe 32, and an air outlet pipe 33. The shell 30 is connected to the mounting frame 26, and a plurality of iron core columns 31 are connected to the bottom wall of the shell 30. Each iron core column 31 is provided with a coil. An air inlet pipe 32 is connected to one side of the shell 30, and an end of the air outlet pipe 33 is connected to the other side of the shell 30. The other end of the air outlet pipe 33 is arranged toward the output end of the conveyor belt 27, and the output end of the conveyor belt 27 is arranged toward the top opening of the guide pipe 34. The bottom opening of the guide pipe 34 is arranged away from the mounting frame 26. The air inlet pipe 32 is connected to the air pump 36, and the output shaft 37 of the air pump 36 is connected to a pulley 38. The pulley 38 is connected to the pulley 2 40 through a belt 39. The pulley 2 40 is connected to an auxiliary roller 29.

[0069] The mounting frame 26 is connected to a driving motor 41 , and a sprocket 42 is connected to the second output shaft of the driving motor 41 . The sprocket 42 is connected to a second sprocket 44 via a chain 43 , and the second sprocket 44 is connected to the end of a roller shaft 28 .

[0070] The principles and beneficial effects of the above scheme are:

[0071] When iron chips need to be sorted, an electromagnetic field is required. Therefore, a housing 30 is connected to the mounting frame 26 to mount the iron core column 31. After the iron core column 31 is installed, a coil is wound around it. When the coil is energized, an electromagnetic field is generated under the mounting frame 26 to magnetically attract the iron chips.

[0072] The coil generates heat during operation. Therefore, an air inlet pipe 32 is connected to one side of the housing 30, and an air outlet pipe 33 is connected to the other side to generate air flow inside the housing 30, thereby achieving cooling of the coil. Since the coil is often coated with insulating materials such as insulating varnish or mica, and these materials have a heat resistance upper limit, this can prevent the coil or iron core from overheating and causing damage to the insulating material.

[0073] At the same time, the cooling function design can maintain the stability of the magnetic field, thereby ensuring a stable magnetic force when magnetically attracting iron chips, preventing the iron chips from falling or failing to be magnetically attracted, and further preventing the accumulation of iron chips in the eddy current separator 15;

[0074] The shell 30 works in conjunction with the conveyor belt 27, and the attenuation of the electromagnetic field needs to be considered. Therefore, the conveyor belt 27 can be made of a nitrile rubber material with the ability to penetrate the static magnetic field. The thickness of the conveyor belt 27 can be set based on actual design requirements. Therefore, the device is easy to produce and has high efficiency. The shell 30 is set in the middle of the annular conveyor belt 27, and its bottom wall with the iron core column 31 is arranged toward the bottom of the conveyor belt 27 and the other roller 28 to ensure that during the movement of the conveyor belt 27, the iron chips will synchronously move to the top of the conveyor belt 27 and finally be collected through the guide pipe 34;

[0075] The conveyor belt mechanism 3 14 conveys metal scraps and iron scraps when it is working, and the coil of the shell 30 generates a magnetic field to magnetically separate the iron scraps. In order to prevent the iron scraps from accumulating on the conveyor belt 27, the drive motor 41 is started, and its output end drives the sprocket 42 to rotate, which drives the sprocket 2 44 to rotate through the chain 43, and one roller 28 rotates. With the cooperation of the other roller 28 and the auxiliary roller 29, the conveyor belt 27 moves, and then in the process of magnetic separation of the iron scraps, the iron scraps are conveyed synchronously. When the iron scraps move to the top of the conveyor belt 27, the magnetic field of the shell on the iron scraps disappears, making it easier for the iron scraps to be discharged at the output end of the conveyor belt 27, and the pulley 2 40 on the auxiliary roller 29 rotates synchronously. The auxiliary roller 29 drives the pulley 38 to rotate through the belt 39, and the pulley 38 drives the output shaft 37 of the air pump 36 to rotate, and the air enters the interior of the shell 30 from the intake pipe 32 to the working The coil dissipates heat, and then the air is output through the air outlet pipe 33 to increase the heat dissipation effect in the mechanism. The heated air is discharged through the output end of the air outlet pipe 33 and blown to the output end of the conveyor belt 27, thereby preventing small iron chips from adhering to the conveyor belt 27, further improving the mechanism's cleaning effect on iron chips. Since the shell 30 is located above the conveyor belt mechanism 3 14 and is arranged at the output end of the conveyor belt 27, the air outlet pipe 33 will not cause the temperature of the shell 30 to rise when discharging hot air from the conveyor belt 27, thereby avoiding a reduction in the heat dissipation effect of the coil. The conveyor belt 27 that has been blown by the hot air will come into contact with the relatively low temperature air in the environment when it moves to the bottom of the shell 30, thereby achieving cooling of the conveyor belt 27, preventing the conveyor belt 27 from heating the shell 30 with the heat it carries after moving to the bottom of the shell 30, further avoiding a reduction in the heat dissipation effect of the shell 30.

[0076] Example 10: Reference Figures 1-15 The air inlet pipe 32 is connected to a filter 45 , which is arranged between the air inlet end of the air inlet pipe 32 and the air pump 36 , and a plurality of speed regulating components are connected to the output shaft 37 in a linear array.

[0077] The speed regulating component includes: a mounting plate 46, a plurality of mounting plates 46 are connected to the bottom of a circular array on the output shaft 37, the bottom wall of the slide groove of the mounting plate 46 is connected to the bottom of a spring 47, the top of the spring 47 is connected to the bottom of the mounting plate 2 48, the mounting plate 2 48 is slidably connected to the slide groove, the top of the mounting plate 2 48 is connected to the bottom of the driving arc 49, the plurality of driving arcs 49 on the linear array are arranged at an angle, the top of the driving arc 49 is arranged toward the end face of the adjusting plate 50, the adjusting plate 50 is connected to the end of the connecting rod 51, the connecting rod 51 is slidably connected to the adjusting tube 52, the adjusting tube 52 is connected to the intake pipe 32, the end of the connecting rod 51 placed in the adjusting tube 52 is connected to the end of the mounting column 53, the mounting column 53 is slidably sealed with the adjusting tube 52, an air guide hole 54 is opened through the mounting column 53, the air guide hole 54 is staggered with the intake pipe 32, and the other end of the mounting column 53 is connected to the inner wall of the adjusting tube 52 through the spring 2 55.

[0078] The principles and beneficial effects of the above scheme are:

[0079] When the housing 30 draws in air, the filter 45 provided on the air inlet pipe 32 can intercept dust and impurities in the air, preventing dust from entering the housing 30 , thereby preventing the coil from overheating due to reduced heat dissipation, further preventing aging of the insulation material, and degradation of the magnetic attraction performance;

[0080] The volume of the metal scraps transported on the conveyor belt mechanism 3 14 is different, so the speed of the magnetic attraction of the iron scraps is different. When the proportion of iron scraps is high, the moving speed of the synchronous conveyor belt 27 is fast, and the magnetic field output by the shell 30 increases at the same time to prevent the iron scraps from being magnetically attracted and unstable and falling. Due to the increase in the magnetic field, the current of the coil increases synchronously, and the heat increases further. At this time, the rotation speed of the output shaft 37 increases, and the air flow rate entering the shell 30 increases synchronously. At the same time, the mounting plate 46 rotates synchronously with the output shaft 37. Under the action of centrifugal force, the mounting plate 2 48 drives the drive The driving arc 49 moves in a direction away from the output shaft 37, and the length of the spring 47 increases. When the driving arc 49 contacts the adjustment plate 50, the adjustment plate 50 drives the connecting rod 51 to move into the adjustment tube 52. The mounting post 53 moves synchronously to compress the spring 2 55, and the conductive area between the air guide hole 54 and the air inlet pipe 32 increases. At this time, the air flow in the air inlet pipe 32 increases. At this time, the sudden increase in the air volume in the housing 30 can be avoided, which can prevent the instantaneous increase in the internal air pressure of the structure caused by the sudden increase in the air volume in the housing 30, and thus prevent the housing 30 from vibrating, thereby preventing the conveyor belt 27 from vibrating, thereby preventing the magnetically attracted iron filings from falling.

[0081] It can also prevent the housing 30, the air inlet pipe 32 and the air outlet pipe 33 from exceeding the structural design load due to the instantaneous increase in air pressure, thereby extending the service life of the structure;

[0082] When the air delivery volume of the air pump 36 increases, the conductive area between the air inlet pipe 32 and the air guide hole 54 increases, which not only prevents the output end of the air outlet pipe 33 from vibrating due to vibration, thereby preventing the output end from being unable to accurately output air toward the conveyor belt 27, resulting in the residue of fine iron filings, but also prevents the pipe structure from cracking.

[0083] Furthermore, under the action of centrifugal force, the faster the output shaft 37 rotates, the longer the driving arc 49 moves, which in turn drives the adjustment plate 50 to move a longer distance, and the larger the conduction area of ​​the intake pipe 32, thereby improving the mechanism's ability to adjust itself.

[0084] When the rotation speed of the output shaft 37 decreases, the second mounting plate 48 drives the driving arc 49 to return to its original position under the restoring force of the spring 47 and the sliding fit of the mounting plate 46. After the driving arc 49 stops contacting the adjustment plate 50, the connecting rod 51 and the mounting post 53 are synchronously restored under the restoring force of the second spring 55. The conductive area between the air guide hole 54 and the intake pipe 32 is reduced, thereby preventing the occurrence of surge in the structure.

[0085] Since multiple speed regulating parts are arranged in a straight line on the output shaft 37, the mounting plates 46 in each speed regulating part are arranged in a circular array on the output shaft 37, and the mounting plates 46 along the axial direction of the output shaft 37 are arranged at an angle. Therefore, multiple driving arcs 49 along the axial direction of the output shaft 37 are arranged at an angle. Under the action of centrifugal force, the driving arcs 49 will move toward the adjustment plate 50, so there will be gaps between the driving arcs 49 in the circumferential direction of the output shaft 37. At this time, the driving arcs 49 in the axial direction of the output shaft 37 will supplement the gaps to avoid vibration of the pushed adjustment plate 50 during operation, thereby ensuring the stability of the air flow in the intake pipe 32 after the air output volume of the air pump 36 changes.

[0086] Example 11: Reference Figures 1-15 The air inlet pipe 32 is connected to an air storage pipe 56, the input end of the air storage pipe 56 is arranged toward the output end of the air pump 36, and the air storage pipe 56 is connected to an air storage tank 57. The air storage pipe 56 is slidably sealed with the inner wall of the piston ring 58, and the side wall of the piston ring 58 is slidably sealed with the inner wall of the air storage tank 57. The other end of the air storage pipe 56 is placed between the end face of the piston ring 58 and the inner wall of the air storage tank 57, and the other end face of the piston ring 58 is connected to the inner wall of the air storage tank 57 through a spring three 59.

[0087] The principles and beneficial effects of the above scheme are:

[0088] When the mechanism is dissipating heat, the air in the intake pipe 32 will enter the air storage pipe 56 and then be stored through the air tank 57. After the internal air volume of the air tank 57 increases, the piston ring 58 moves toward the direction of the intake pipe 32, and the spring three 59 is compressed. When the spring three 59 is compressed and the air pressure is equal to the air pressure input into the air storage pipe 56, the piston ring 58 remains stationary. When the air pump 36 finishes working, the air storage pipe 56 stops outputting air. Under the elastic force of the spring three 59 returning to its original position, the piston ring 58 moves away from the intake pipe 32, releasing the air in the air tank 57. After the air is input into the filter 45 through the air storage pipe 56, the dust accumulated on it during work is blown in the opposite direction, and the dust is discharged through the input end of the intake pipe 32, which not only ensures the permeability of the filter 45, but also avoids manual cleaning.

[0089] Example 12: Reference Figures 1-15 The mounting frame 26 is connected to a connecting rod 2 35 , and the bottom of the connecting rod 2 35 is connected to the top of a plurality of rubber sheets 66 , and the bottom end of the rubber sheet 66 is frictionally matched with the output end of the conveyor belt 27 .

[0090] The principles and beneficial effects of the above scheme are:

[0091] The mounting frame 26 is connected to the top of the rubber sheet 66 through the second connecting rod 35, and the bottom end of the rubber sheet 66 can clean the output end of the conveyor belt 27.

[0092] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A dust removal and fresh air circulation system for a refrigerator recycling line, characterized in that: include: A conveyor belt mechanism (1), wherein the output end of the conveyor belt mechanism (1) is arranged toward the input end of a double-shaft shredder (2), the bottom of the double-shaft shredder (2) is connected to the end of an exhaust gas exhaust pipe (5), the other end of the exhaust gas exhaust pipe (5) is connected to a dust removal mechanism (3), the dust removal mechanism (3) is connected to the end of an exhaust gas return pipe (6), and the output end of the exhaust gas return pipe (6) and the output end of the double-shaft shredder (2) are both arranged toward the input end of the second conveyor belt mechanism (4).

2. The dust removal and fresh air circulation system for a refrigerator recycling line according to claim 1, characterized in that: The exhaust gas return pipe (6) is connected to an axial fan (7).

3. The dust removal and fresh air circulation system for a refrigerator recycling line according to claim 1, characterized in that: It also includes a second exhaust gas exhaust pipe (8), the input end of which is arranged above the conveyor belt mechanism (1), and the other end of which is connected to the dust removal mechanism (3).

4. The dust removal and fresh air circulation system for a refrigerator recycling line according to claim 1, characterized in that: The output end of the second conveyor belt mechanism (4) is arranged toward the input end of the vertical crusher (9), the top of the vertical crusher (9) is connected to the input end of the third exhaust gas exhaust pipe (10), the other end of the third exhaust gas exhaust pipe (10) is connected to the dust removal mechanism (3), the dust removal mechanism (3) is connected to the end of the second exhaust gas return pipe (11), the output end of the second exhaust gas return pipe (11) and the input end of the vibrating feeder (13) are both arranged toward the output end of the vertical crusher (9), the bottom of the vertical crusher (9) is connected to the end of the foam exhaust gas exhaust pipe (60), the foam exhaust gas exhaust pipe (60) is connected to a sorting machine (61) and an auxiliary fan (63), and the other end of the foam exhaust gas exhaust pipe (60) is connected to a collecting hopper (62).

5. The dust removal and fresh air circulation system for a refrigerator recycling line according to claim 4, characterized in that: The second exhaust gas return pipe (11) is connected to the second axial fan (12).

6. The dust removal and fresh air circulation system for a refrigerator recycling line according to claim 4, characterized in that: The output end of the vibrating feeder (13) is arranged toward the input end of the conveyor belt mechanism three (14), and the output end of the conveyor belt mechanism three (14) is arranged toward the input end of the eddy current separator (15). The conveyor belt mechanism three (14) is connected to a magnetic attraction mechanism, and the eddy current separator (15) is connected to the input end of the exhaust gas exhaust pipe four (16). The other end of the exhaust gas exhaust pipe four (16) is connected to the separator (61). The eddy current separator (15) is connected to the input end of the exhaust gas return pipe three (17), and the other end of the exhaust gas return pipe three (17) is connected to the dust removal mechanism (3). The exhaust gas return pipe three (17) is connected to the axial fan three (18).

7. The dust removal and fresh air circulation system for a refrigerator recycling line according to claim 6, characterized in that: The output end of the bottom of the eddy current separator (15) is arranged toward the guide plate (19).

8. The dust removal and fresh air circulation system for a refrigerator recycling line according to claim 6, characterized in that: The dust removal mechanism (3) comprises: a main air duct (21); the other ends of the exhaust gas exhaust pipe (5), the second exhaust gas exhaust pipe (8), the third exhaust gas exhaust pipe (10) and the fourth exhaust gas exhaust pipe (16) are all connected to the main air duct (21); a pulse dust collector (20) and a filter (22) are connected to the main air duct (21); the other end of the main air duct (21) is connected to the input end of the main fan (23); the output end of the main fan (23) is connected to the end of the main exhaust gas return pipe (24); the end of the auxiliary exhaust gas return pipe (25) is connected to the main exhaust gas return pipe (24); the other end of the auxiliary exhaust gas return pipe (25) is arranged away from the pulse dust collector (20); the other ends of the exhaust gas return pipe (6), the second exhaust gas return pipe (11) and the third exhaust gas return pipe (17) are all connected to the main exhaust gas return pipe (24).

9. The dust removal and fresh air circulation system for a refrigerator recycling line according to claim 6, characterized in that: The magnetic attraction mechanism comprises: a mounting frame (26), the conveyor belt mechanism 3 (14) is connected to the mounting frame (26), two rollers (28) are rotatably connected to the mounting frame (26), the end of one roller (28) is connected to the output end of the driving member, the driving member is connected to the mounting frame (26), a magnetic attraction component is provided on the mounting frame (26), the magnetic attraction component is arranged between the conveyor belts (27), the inner wall of the conveyor belt (27) is frictionally matched with the side walls of the two rollers (28), and a plurality of auxiliary rollers (29) are rotatably connected to the mounting frame (26), and the side walls of the auxiliary rollers (29) are frictionally matched with the inner wall of the conveyor belt (27).

10. The dust removal and fresh air circulation system for a refrigerator recycling line according to claim 9, characterized in that: The magnetic attraction component comprises: a shell (30), the mounting frame (26) is connected to the shell (30), the bottom wall of the shell (30) is connected to a plurality of iron core columns (31), each iron core column (31) is provided with a coil, one side of the shell (30) is connected to an air inlet pipe (32), the other side of the shell (30) is connected to the end of an air outlet pipe (33), the other end of the air outlet pipe (33) is arranged toward the output end of the conveyor belt (27), the output end of the conveyor belt (27) is arranged toward the top opening of the guide pipe (34), the bottom opening of the guide pipe (34) is arranged away from the mounting frame (26), the air inlet pipe (32) is connected to an air pump (36), the output shaft (37) of the air pump (36) is connected to a pulley (38), the pulley (38) is connected to a second pulley (40) through a belt (39), and the second pulley (40) is connected to an auxiliary roller (29).

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