Production line for processing waste rubber and old tires into rubber powder based on comprehensive utilization of solid waste

Abstract

The invention discloses an assembly line for processing waste rubber and old tires into rubber powder based on comprehensive utilization of solid wastes, and relates to the technical field of old tire treatment, the assembly line comprises a crusher, a pulverizer, a freezing conveying device, a separating device and a screening device; according to the device, the fragments are uniformly laid through the tiling mechanism, cold air conveying of the freezing cavity is matched, it is ensured that the rubber fragments are fully frozen and embrittled, the follow-up crushing and grinding efficiency is remarkably improved, and energy consumption is reduced; through combination of mechanical swinging arm separation and a wind-magnetic composite screening device, multi-stage separation of metal impurities is achieved, iron metal can be efficiently adsorbed and discharged through cooperation of a magnetic attraction block and a rotary annular plate, the purity of rubber powder is greatly improved, and abrasion to grinding equipment is reduced; according to the system, the procedures of crushing, freezing, separating, screening, grinding and the like are integrated into an automatic assembly line, conveying paths of all the devices are in accurate butt joint, manual intervention is reduced, the overall production continuity and stability are improved, and efficient recycling utilization of the waste tires is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of waste tire processing, in particular to an assembly line for processing waste rubber tires into rubber powder based on comprehensive utilization of solid waste. Background Art

[0002] With the rapid development of the automobile industry, the output of waste rubber and old tires has increased year by year. If this type of solid waste is not properly handled, it will occupy land resources and cause environmental problems. Therefore, processing it into rubber powder has become an important way to utilize solid waste resources. However, traditional processes have many limitations. For example, during crushing and grinding, the high elasticity and toughness of rubber easily generate heat, resulting in particle adhesion, high energy consumption and uneven particle size of the finished product. Incomplete separation of metal impurities will aggravate the wear of the grinding machine blades. The lack of coordinated design between the various equipment in the segmented operation line leads to insufficient process continuity. Although the existing technology has improvement directions in freezing pretreatment, automated separation and screening, and pipeline integration, there are still problems such as material accumulation in freezing equipment, low metal adsorption efficiency and insufficient screening accuracy. The present invention addresses the problems of uneven freezing treatment, incomplete metal separation, and poor pipeline coordination in the existing technology. Summary of the Invention

[0003] The purpose of the present invention is to solve the above problems and provide a production line for processing waste rubber and old tires into rubber powder based on the comprehensive utilization of solid waste, thereby solving the problems in the prior art that restrict the efficient resource utilization of waste tires, such as high processing energy consumption, high metal residue rate and insufficient degree of automation due to the high elasticity of rubber.

[0004] In order to solve the above problems, the present invention provides a technical solution: a production line for processing waste rubber and old tires into rubber powder based on the comprehensive utilization of solid waste, comprising a crusher and a grinder, as well as a freezing conveying device, a separation device and a screening device; the left inlet of the freezing conveying device is connected to the right outlet of the crusher, and the right outlet of the freezing conveying device is connected to the left inlet of the separation device; the left inlet of the screening device is connected to the right outlet of the separation device, and the right outlet of the screening device is connected to the left outlet of the grinder.

[0005] Preferably, the specific structure of the freezing conveying device includes an outer shell, a freezing chamber, a conveying mechanism, an inlet, a flattening mechanism, a cold air inlet and an outlet; a freezing chamber is provided inside the outer shell; a conveying mechanism is provided inside the freezing chamber, an inlet is provided on the lower left side of the freezing chamber, and the inlet is connected to the right outlet of the crusher, an outlet is provided on the lower right side of the freezing chamber, and several cold air inlets are provided on the side of the freezing chamber; there are two flattening mechanisms, and the two flattening mechanisms are fixedly connected to the left and right upper sides of the outer shell respectively, and the inner sides of the two flattening mechanisms are provided on the inner side of the freezing chamber.

[0006] Preferably, the specific structure of the conveying mechanism includes a driven pulley, a transmission belt, a conveying plate, a motor 1 and a driving pulley; the driven pulley is movably connected to the lower side of the freezing chamber; the motor 1 is fixedly connected to the outside of the upper rear side of the outer shell, and the motor 1 is a servo motor or a stepper motor; the driving pulley is movably connected to the upper side of the freezing chamber, the rear center of the driving pulley is fixedly connected to the output shaft of motor 1, the driving pulley is connected to the driven pulley through a transmission belt, and several conveying plates are fixedly connected to the outside of the transmission belt.

[0007] Preferably, the specific structure of the flattening mechanism includes a guide groove seat, a slide, a screw, a second motor, a connecting arm, a side groove and a flattening rod; the guide groove seat is fixedly connected to the outside of the outer shell, and a screw is movably connected to the center of the guide groove seat; the second motor is fixedly connected to the outside of the rear side of the guide groove seat, and the output shaft of the second motor is fixedly connected to the center of the rear side of the screw; the outside of the slide is longitudinally movably connected to the inside of the guide groove seat, and the threaded hole arranged in the center of the slide is connected to the screw, and a connecting arm is fixedly connected to the center of the right side of the slide, and several flattening rods are fixedly connected to the bottom of the connecting arm; the side groove is located on the rear side of the connecting arm, and the side groove is opened on the rear side of the freezing chamber.

[0008] Preferably, the specific structure of the separation device includes a separation shell, a conveying mechanism 1, a separation mechanism and a conveying mechanism 2; the conveying mechanism 1 is arranged inside the left side of the separation shell, and the left side inlet of the conveying mechanism 1 is connected to the lower right side outlet of the freezing conveying device; the separation mechanism is arranged inside the center of the separation shell, and the upper left side inlet of the separation mechanism is connected to the right side outlet of the conveying mechanism 1; the conveying mechanism 2 is arranged inside the right side of the separation shell, and the left side inlet of the conveying mechanism 2 is connected to the lower right side outlet of the separation mechanism, and the right side outlet of the conveying mechanism 2 is connected to the upper left side inlet of the screening device.

[0009] Preferably, the structure of the conveying mechanism 2 is consistent with that of the conveying mechanism 1, and the specific structure of the conveying mechanism 1 includes a conveying entrance, a conveying hole, a screw rod, a motor 3 and a conveying outlet; the conveying hole is inclined and arranged inside the left side of the separation shell, a conveying entrance is provided on the lower left side of the conveying hole, and a conveying outlet is provided on the upper right side of the conveying hole; the motor 3 is fixedly connected to the top of the separation shell; the screw rod is movably connected inside the conveying hole, and the upper center of the screw rod is fixedly connected to the lower output shaft of the motor 3.

[0010] Preferably, the specific structure of the separation mechanism includes a separation chamber, a fixed rod, a swing arm, a fixed block, a motor four, a connecting shaft, a sieve plate and a separation outlet; the separation chamber is arranged in the central interior of the separation shell, the lower side of the separation chamber is fixedly connected to a sieve plate, the upper inlet of the separation chamber is connected to the right side outlet of a conveying mechanism, the upper side of the separation chamber is fixedly connected to several fixed rods, and the lower right side of the separation chamber is provided with a separation outlet; the motor four is fixedly connected to the rear outside of the separation shell; the connecting shaft is movably connected to the center of the separation chamber, the rear center of the connecting shaft is fixedly connected to the output shaft of the motor four, the outside of the connecting shaft is fixedly connected to several fixed blocks, and the outside of the fixed block is hinged to one side of the swing arm.

[0011] Preferably, the specific structure of the screening device includes a wind-magnetic mechanism, a metal collecting box, a screening chamber, an output mechanism, a filter plate and a screening shell; a screening chamber is provided inside the screening shell, and the inlet on the upper left side of the screening chamber is connected to the outlet on the right side of the separation device; the wind-magnetic mechanism is provided inside the left side of the screening chamber, and the metal collecting box is movably connected to the lower left side of the wind-magnetic mechanism; the output mechanism is provided on the lower side of the screening chamber; the filter plate is fixedly connected to the inner side of the opening on the upper right side of the screening chamber.

[0012] Preferably, the specific structure of the wind-magnetic mechanism includes an annular plate, a magnetic block, a fan, a driven gear, a driving gear, a motor five and an air inlet; the annular plate is movably connected to the interior of the left side of the screening chamber, and the left inner side of the annular plate is fixedly connected to the driven gear; the fan is fixedly connected to the central interior of the left side of the screening chamber; the magnetic block is fixedly connected to the upper side of the interior of the left side of the screening chamber; the motor five is fixedly connected to the interior of the lower left side of the screening chamber, and the driving gear is fixedly connected to the right output shaft of the motor five, and the driving gear is connected to the driven gear; the air inlet is provided in the central interior of the left side of the screening chamber, and the interior of the air inlet is communicated with the left inlet of the fan.

[0013] Preferably, the specific structure of the output mechanism includes motor six, screw rod two and an output hole; the motor six is ​​fixedly connected to the inside of the lower side of the screening shell; the output hole is opened on the lower right side of the screening chamber, and the right outlet of the output hole is connected to the left inlet of the grinding mill; the screw rod two is movably connected to the lower side of the screening chamber, the left center of the screw rod two is fixedly connected to the right output shaft of the motor six, and the right outer side of the screw rod two is located inside the output hole.

[0014] The beneficial effects of the present invention are as follows: (1) The present invention has the characteristics of reasonable and simple structure, low production cost and easy installation. The crushed pieces are evenly laid out by the paving mechanism, and the cold air is delivered by the freezing chamber to ensure that the rubber pieces are fully frozen and brittle, which significantly improves the subsequent crushing and grinding efficiency and reduces energy consumption.

[0015] (2) The present invention realizes multi-stage separation of metal impurities by combining mechanical swing arm separation and wind-magnetic composite screening device. The magnetic block cooperates with the rotating annular plate to efficiently absorb and discharge ferrous metals, greatly improving the purity of rubber powder and reducing wear on grinding equipment.

[0016] (3) The present invention integrates the processes of crushing, freezing, separation, screening, and grinding into an automated production line, and accurately connects the conveying paths between the various devices, thereby reducing manual intervention, improving the overall production continuity and stability, and realizing the efficient utilization of waste tire resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 for Figure 1 sectional view of .

[0019] Figure 3 Schematic diagram of the structure of the freezing transport device.

[0020] Figure 4 It is a structural diagram of the conveying mechanism.

[0021] Figure 5 Schematic diagram of the structure of the tiling mechanism.

[0022] Figure 6 Schematic diagram of the separation device.

[0023] Figure 7 Schematic diagram of the transmission mechanism.

[0024] Figure 8 Schematic diagram of the separation mechanism.

[0025] Figure 9 Schematic diagram of the structure of the screening device.

[0026] Figure 10 It is a structural diagram of the wind magnetic mechanism.

[0027] Figure 11 Schematic diagram of the output structure.

[0028] 1-crusher; 2-grinding mill; 3-frozen conveying device; 4-separating device; 5-screening device; 31-outer shell; 32-freezing chamber; 33-conveying mechanism; 34-entry port; 35-smoothing mechanism; 36-cold air inlet; 37-exit port; 331-driven pulley; 332-transmission belt; 333-conveying plate; 334-motor 1; 335-driving pulley; 351-guide groove seat; 352-sliding seat; 353-screw; 354-motor 2; 355-connecting arm; 356-side groove; 357-smoothing rod; 41-separating shell; 42-conveying mechanism 1; 43-separating mechanism; 44-conveying mechanism 2; 421-conveying inlet; 422-transmission hole; 423-screw rod; 424-motor three; 425-transmission outlet; 431-separation chamber; 432-fixing rod; 433-swing arm; 434-fixing block; 435-motor four; 436-connecting shaft; 437-sieve plate; 438-separation outlet; 51-wind magnetic mechanism; 52-metal collecting box; 53-screening chamber; 54-output mechanism; 55-filter plate; 56-screening shell; 511-annular plate; 512-magnetic block; 513-fan; 514-driven gear; 515-driving gear; 516-motor five; 517-air inlet; 541-motor six; 542-screw rod two; 543-output hole. DETAILED DESCRIPTION

[0029] like Figure 1 and Figure 2 As shown, this specific embodiment adopts the following technical solution: a production line for processing waste rubber and old tires into rubber powder based on the comprehensive utilization of solid waste, including a crusher 1 and a grinder 2, and also including a freezing conveyor 3, a separator 4 and a screening device 5; the left inlet of the freezing conveyor 3 is connected to the right outlet of the crusher 1, and the right outlet of the freezing conveyor 3 is connected to the left inlet of the separator 4; the left inlet of the screening device 5 is connected to the right outlet of the separator 4, and the right outlet of the screening device 5 is connected to the left outlet of the grinder 2.

[0030] like Figure 3 As shown, the specific structure of the freezing conveying device 3 includes an outer shell 31, a freezing chamber 32, a conveying mechanism 33, an inlet 34, a flattening mechanism 35, a cold air inlet 36 and an outlet 37; a freezing chamber 32 is provided inside the outer shell 31; a conveying mechanism 33 is provided inside the freezing chamber 32, an inlet 34 is provided on the lower left side of the freezing chamber 32, and the inlet 34 is connected to the right outlet of the crusher 1, an outlet 37 is provided on the lower right side of the freezing chamber 32, and several cold air inlets 36 are provided on the side of the freezing chamber 32; there are two flattening mechanisms 35, and the two flattening mechanisms 35 are respectively fixedly connected to the left and right upper sides of the outer shell 31, and the inner sides of the two flattening mechanisms 35 are both provided on the inner side of the freezing chamber 32.

[0031] As Figure 4 shown in the figure, the specific structure of the conveying mechanism 33 comprises a driven pulley 331, a transmission belt 332, a conveying plate 333, a motor 334 and a driving pulley 335; the driven pulley 331 is movably connected to the lower side of the freezing cavity 32; the motor 334 is fixedly connected to the upper rear side of the outer shell 31, and the motor 334 is a servo motor or a stepping motor; the driving pulley 335 is movably connected to the upper side of the freezing cavity 32, and the center of the rear side of the driving pulley 335 is fixedly connected with the output shaft of the motor 334; the driving pulley 335 is connected with the driven pulley 331 through the transmission belt 332, and a plurality of conveying plates 333 are fixedly connected to the outside of the transmission belt 332.

[0032] As Figure 5 shown in the figure, the specific structure of the conveying mechanism 33 comprises a driven pulley 331, a transmission belt 332, a conveying plate 333, a motor 334 and a driving pulley 335; the driven pulley 331 is movably connected to the lower side of the freezing cavity 32; the motor 334 is fixedly connected to the upper rear side of the outer shell 31, and the motor 334 is a servo motor or a stepping motor; the driving pulley 335 is movably connected to the upper side of the freezing cavity 32, and the center of the rear side of the driving pulley 335 is fixedly connected with the output shaft of the motor 334; the driving pulley 335 is connected with the driven pulley 331 through the transmission belt 332, and a plurality of conveying plates 333 are fixedly connected to the outside of the transmission belt 332.

[0033] As Figure 6 shown in the figure, the specific structure of the conveying mechanism 33 comprises a driven pulley 331, a transmission belt 332, a conveying plate 333, a motor 334 and a driving pulley 335; the driven pulley 331 is movably connected to the lower side of the freezing cavity 32; the motor 334 is fixedly connected to the upper rear side of the outer shell 31, and the motor 334 is a servo motor or a stepping motor; the driving pulley 335 is movably connected to the upper side of the freezing cavity 32, and the center of the rear side of the driving pulley 335 is fixedly connected with the output shaft of the motor 334; the driving pulley 335 is connected with the driven pulley 331 through the transmission belt 332, and a plurality of conveying plates 333 are fixedly connected to the outside of the transmission belt 332.

[0034] As Figure 7As shown, the structure of the conveying mechanism 2 44 is consistent with that of the conveying mechanism 1 42. The specific structure of the conveying mechanism 1 42 includes a conveying entrance 421, a conveying hole 422, a screw rod 423, a motor 3 424 and a conveying outlet 425; the conveying hole 422 is inclined and arranged inside the left side of the separation shell 41, the conveying entrance 421 is provided on the lower left side of the conveying hole 422, and the conveying outlet 425 is provided on the upper right side of the conveying hole 422; the motor 3 424 is fixedly connected to the top of the separation shell 41; the screw rod 423 is movably connected inside the conveying hole 422, and the upper center of the screw rod 423 is fixedly connected to the lower output shaft of the motor 3 424.

[0035] like Figure 8 As shown, the specific structure of the separation mechanism 43 includes a separation chamber 431, a fixed rod 432, a swing arm 433, a fixed block 434, a motor four 435, a connecting shaft 436, a sieve plate 437 and a separation outlet 438; the separation chamber 431 is arranged in the central interior of the separation shell 41, the sieve plate 437 is fixedly connected to the lower side of the separation chamber 431, the upper entrance of the separation chamber 431 is connected to the right side outlet of the conveying mechanism 42, several fixed rods 432 are fixedly connected to the upper side of the separation chamber 431, and a separation outlet 438 is provided on the lower right side of the separation chamber 431; the motor four 435 is fixedly connected to the rear side of the separation shell 41; the connecting shaft 436 is movably connected to the center of the separation chamber 431, the rear center of the connecting shaft 436 is fixedly connected to the output shaft of the motor four 435, the outside of the connecting shaft 436 is fixedly connected to several fixed blocks 434, and the outside of the fixed block 434 is hinged to one side of the swing arm 433.

[0036] like Figure 9 As shown, the specific structure of the screening device 5 includes a wind-magnetic mechanism 51, a metal collecting box 52, a screening chamber 53, an output mechanism 54, a filter plate 55 and a screening shell 56; a screening chamber 53 is provided inside the screening shell 56, and the upper left inlet of the screening chamber 53 is connected to the right outlet of the separation device 4; the wind-magnetic mechanism 51 is provided inside the left side of the screening chamber 53, and the metal collecting box 52 is movably connected to the lower left side of the wind-magnetic mechanism 51; the output mechanism 54 is provided on the lower side of the screening chamber 53; the filter plate 55 is fixedly connected to the inner side of the upper right opening of the screening chamber 53.

[0037] like Figure 10As shown, the specific structure of the wind-magnetic mechanism 51 includes an annular plate 511, a magnetic block 512, a fan 513, a driven gear 514, a driving gear 515, a motor 516 and an air inlet 517; the annular plate 511 is movably connected to the interior of the left side of the screening chamber 53, and the driven gear 514 is fixedly connected to the left inner side of the annular plate 511; the fan 513 is fixedly connected to the center of the left side of the screening chamber 53; the magnetic block 512 is fixedly connected to the upper side of the interior of the left side of the screening chamber 53; the motor 516 is fixedly connected to the interior of the lower left side of the screening chamber 53, and the driving gear 515 is fixedly connected to the right output shaft of the motor 5 516, and the driving gear 515 is connected to the driven gear 514; the air inlet 517 is provided in the center of the left side of the screening chamber 53, and the interior of the air inlet 517 is communicated with the left inlet of the fan 513.

[0038] like Figure 11 As shown, the specific structure of the output mechanism 54 includes a sixth motor 541, a second screw rod 542 and an output hole 543; the sixth motor 541 is fixedly connected to the lower inner side of the screening shell 56; the output hole 543 is opened on the lower right side of the screening chamber 53, and the right outlet of the output hole 543 is connected to the left inlet of the grinding mill 2; the second screw rod 542 is movably connected to the lower side of the screening chamber 53, and the left center of the second screw rod 542 is fixedly connected to the right output shaft of the sixth motor 541, and the right outer side of the second screw rod 542 is located inside the output hole 543.

[0039] The use state of the present invention is as follows: the present invention has a reasonable and simple structure, low production cost, and easy installation. When in use, the waste rubber tires are first crushed into small pieces, and the crushed pieces are output from the right outlet of the crusher 1, and then the pieces enter the freezing chamber 32 through the inlet 34. The motor 1 334 drives the active pulley 335 to rotate, and drives the driven pulley 331 to operate through the transmission belt 332, so that the conveying plate 333 moves intermittently along the inside of the freezing chamber 32, and the motor 2 354 of the paving mechanism 35 can drive the screw 353 to rotate, and the slide seat 352 slides up and down along the guide groove seat 351, and drives the flattening rod 357 through the connecting arm 355 to evenly lay the broken pieces on the conveying plate 333 to ensure the freezing effect. At the same time, cold air enters the freezing chamber 32 from the cold air inlet 36 to freeze the broken pieces. The frozen broken pieces enter the conveying hole 422 of the conveying mechanism 1 42 through the conveying inlet 421. The motor 3 424 drives the screw rod 423 to rotate, and the broken pieces are conveyed from the conveying outlet 425 to the separation chamber 431 of the separation mechanism 43. In the separation mechanism 43, the motor 435 drives The connecting shaft 436 rotates, and the fixed block 434 drives the swing arm 433 to rotate and swing toward the fragments, thereby separating the rubber and metal in the fragments. After the rubber and metal are separated, they fall through the sieve holes in the sieve plate 437. The conveying mechanism 2 44 has the same structure as the conveying mechanism 1 42, so that the separated fragments can be transported from the separation outlet 438 to the screening chamber 53. The fan 513 sends air through the air inlet 517, and then the crushed rubber is blown to the right side of the screening chamber 53 and falls, while the metal falls into the metal collection box 52 for collection. The magnetic block 512 can adsorb the ferrous metal onto the annular plate 511, and then the motor five 516 drives the driving gear 515 to rotate, driving the driven gear 514 to rotate the annular plate 511, thereby driving the ferrous metal adsorbed on the annular plate 511 to rotate together and bypass the air outlet of the fan 513, making it easier for the ferrous metal to fall into the metal collection box 52. Finally, the motor six 541 of the output mechanism 54 drives the screw rod two 542 to rotate, and the rubber crumbs are transported from the output hole 543 to the grinder 2 for grinding the rubber powder.

[0040] The control method of the present invention is through manual startup or control through existing automation technology. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices. Therefore, the present invention will not explain the control method and wiring layout in detail.

[0041] In the description of the invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0042] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two elements or an interaction relationship between two elements. Unless otherwise clearly specified, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0043] The above shows and describes the basic principles, main features and advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the invention. Without departing from the spirit and scope of the invention, the invention may be subject to various changes and improvements, which shall fall within the scope of the invention to be protected. The scope of protection of the invention shall be defined by the accompanying claims and their equivalents.

Claims

1. A production line for processing waste rubber and old tires into rubber powder based on comprehensive utilization of solid waste, comprising a crusher (1) and a grinder (2), characterized in that: It also includes a freezing conveying device (3), a separation device (4) and a screening device (5); The left inlet of the freezing conveying device (3) is connected to the right outlet of the crusher (1), and the right outlet of the freezing conveying device (3) is connected to the left inlet of the separation device (4); The left inlet of the screening device (5) is connected to the right outlet of the separation device (4), and the right outlet of the screening device (5) is connected to the left outlet of the grinding mill (2).

2. The production line for processing waste rubber and old tires into rubber powder based on comprehensive utilization of solid waste according to claim 1, characterized in that: The specific structure of the freezing conveying device (3) includes an outer shell (31), a freezing chamber (32), a conveying mechanism (33), an inlet (34), a flattening mechanism (35), a cold air inlet (36) and an outlet (37); A freezing chamber (32) is provided inside the outer shell (31); A conveying mechanism (33) is provided inside the freezing chamber (32); an inlet (34) is provided on the lower left side of the freezing chamber (32), and the inlet (34) is connected to the right outlet of the crusher (1); an outlet (37) is provided on the lower right side of the freezing chamber (32); and a plurality of cold air inlets (36) are provided on the side of the freezing chamber (32); There are two paving mechanisms (35), and the two paving mechanisms (35) are fixedly connected to the left and right upper sides of the outer shell (31), respectively. The inner sides of the two paving mechanisms (35) are both arranged inside the freezing chamber (32).

3. The production line for processing waste rubber and old tires into rubber powder based on comprehensive utilization of solid waste according to claim 2, characterized in that: The specific structure of the conveying mechanism (33) includes a driven pulley (331), a transmission belt (332), a conveying plate (333), a motor (334) and a driving pulley (335); The driven pulley (331) is movably connected to the lower side of the freezing chamber (32); The motor 1 (334) is fixedly connected to the outside of the upper rear side of the outer shell (31), and the motor 1 (334) is a servo motor or a stepping motor; The driving pulley (335) is movably connected to the upper side of the freezing chamber (32), and the rear center of the driving pulley (335) is fixedly connected to the output shaft of the motor (334). The driving pulley (335) is connected to the driven pulley (331) through a transmission belt (332), and a plurality of conveying plates (333) are fixedly connected to the outside of the transmission belt (332).

4. The production line for processing waste rubber and old tires into rubber powder based on comprehensive utilization of solid waste according to claim 2 is characterized by: The specific structure of the paving mechanism (35) includes a guide groove seat (351), a slide seat (352), a screw rod (353), a second motor (354), a connecting arm (355), a side groove (356) and a paving rod (357); The guide groove seat (351) is fixedly connected to the outside of the outer shell (31), and a screw rod (353) is movably connected to the center of the guide groove seat (351); The second motor (354) is fixedly connected to the outside of the rear side of the guide slot seat (351), and the output shaft of the second motor (354) is fixedly connected to the center of the rear side of the screw rod (353); The outside of the slide (352) is longitudinally movably connected to the inside of the guide groove seat (351); a threaded hole provided in the center of the slide (352) is connected to the screw rod (353); a connecting arm (355) is fixedly connected to the center of the right side of the slide (352); and a plurality of paving rods (357) are fixedly connected to the bottom of the connecting arm (355); The side groove (356) is located on the rear side of the connecting arm (355), and the side groove (356) is opened on the rear side of the freezing chamber (32).

5. The production line for processing waste rubber and old tires into rubber powder based on comprehensive utilization of solid waste according to claim 1 is characterized by: The specific structure of the separation device (4) includes a separation shell (41), a first conveying mechanism (42), a separation mechanism (43) and a second conveying mechanism (44); The conveying mechanism 1 (42) is arranged inside the left side of the separation shell (41), and the left side inlet of the conveying mechanism 1 (42) is connected to the lower right side outlet of the freezing conveying device (3); The separation mechanism (43) is arranged in the center of the separation shell (41), and the upper left inlet of the separation mechanism (43) is connected to the right outlet of the first conveying mechanism (42); The second conveying mechanism (44) is arranged inside the right side of the separation shell (41), the left side inlet of the second conveying mechanism (44) is connected to the lower right side outlet of the separation mechanism (43), and the right side outlet of the second conveying mechanism (44) is connected to the upper left side inlet of the screening device (5).

6. The production line for processing waste rubber and old tires into rubber powder based on comprehensive utilization of solid waste according to claim 5, characterized in that: The structure of the second conveying mechanism (44) is consistent with that of the first conveying mechanism (42). The specific structure of the first conveying mechanism (42) includes a conveying entrance (421), a conveying hole (422), a screw rod (423), a third motor (424) and a conveying exit (425). The transmission hole (422) is arranged obliquely inside the left side of the separation shell (41); a transmission inlet (421) is provided on the lower left side of the transmission hole (422); and a transmission outlet (425) is provided on the upper right side of the transmission hole (422); The motor three (424) is fixedly connected to the top of the separation housing (41); The screw rod (423) is movably connected inside the transmission hole (422), and the upper center of the screw rod (423) is fixedly connected to the lower output shaft of the motor three (424).

7. The production line for processing waste rubber and old tires into rubber powder based on comprehensive utilization of solid waste according to claim 5, characterized in that: The specific structure of the separation mechanism (43) includes a separation chamber (431), a fixing rod (432), a swing arm (433), a fixing block (434), a fourth motor (435), a connecting shaft (436), a sieve plate (437) and a separation outlet (438); The separation chamber (431) is provided in the center of the separation housing (41); a sieve plate (437) is fixedly connected to the lower side of the separation chamber (431); an upper inlet of the separation chamber (431) is connected to the right outlet of the first conveying mechanism (42); a plurality of fixing rods (432) are fixedly connected to the upper side of the separation chamber (431); and a separation outlet (438) is provided on the lower right side of the separation chamber (431); The motor 4 (435) is fixedly connected to the rear exterior of the separation housing (41); The connecting shaft (436) is movably connected to the center of the separation chamber (431), and the rear center of the connecting shaft (436) is fixedly connected to the output shaft of the motor four (435). The outside of the connecting shaft (436) is fixedly connected to a plurality of fixed blocks (434), and the outside of the fixed block (434) is hinged to one side of the swing arm (433).

8. The production line for processing waste rubber and old tires into rubber powder based on comprehensive utilization of solid waste according to claim 1, characterized in that: The specific structure of the screening device (5) includes a wind-magnetic mechanism (51), a metal collecting box (52), a screening chamber (53), an output mechanism (54), a filter plate (55) and a screening housing (56); A screening chamber (53) is provided inside the screening housing (56), and the upper left inlet of the screening chamber (53) is connected to the right outlet of the separation device (4); The wind-magnetic mechanism (51) is arranged inside the left side of the screening chamber (53), and a metal collecting box (52) is movably connected to the lower left side of the wind-magnetic mechanism (51); The output mechanism (54) is provided on the lower side of the screening chamber (53); The filter plate (55) is fixedly connected to the inner side of the upper right opening of the screening chamber (53).

9. The production line for processing waste rubber and old tires into rubber powder based on comprehensive utilization of solid waste according to claim 8, characterized in that: The specific structure of the wind-magnetic mechanism (51) includes an annular plate (511), a magnetic block (512), a fan (513), a driven gear (514), a driving gear (515), a motor (516) and an air inlet (517); The annular plate (511) is movably connected to the inner periphery of the left side of the screening chamber (53), and a driven gear (514) is fixedly connected to the left inner side of the annular plate (511); The fan (513) is fixedly connected to the center of the left side of the screening chamber (53); The magnetic block (512) is fixedly connected to the upper side of the inner periphery of the left side of the screening chamber (53); The motor five (516) is fixedly connected to the interior of the lower left side of the screening chamber (53), and a driving gear (515) is fixedly connected to the right output shaft of the motor five (516), and the driving gear (515) is connected to the driven gear (514); The air inlet (517) is provided in the center of the left side of the screening chamber (53), and the interior of the air inlet (517) is connected to the left side inlet of the fan (513).

10. The production line for processing waste rubber and old tires into rubber powder based on comprehensive utilization of solid waste according to claim 8, characterized in that: The specific structure of the output mechanism (54) includes a sixth motor (541), a second screw rod (542) and an output hole (543); The motor six (541) is fixedly connected to the inside of the lower side of the screening housing (56); The output hole (543) is provided on the lower right side of the screening chamber (53), and the right outlet of the output hole (543) is connected to the left inlet of the grinding mill (2); The second screw rod (542) is movably connected to the lower side of the screening chamber (53), the left center of the second screw rod (542) is fixedly connected to the right output shaft of the motor six (541), and the right outer portion of the second screw rod (542) is located inside the output hole (543).

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