Waste tire recycling equipment and method

Abstract

The embodiment of the present application discloses a waste tire recycling device and method. First, the waste tire is softened by a high-temperature reactor component under stirring. Then, the softened waste tire is transferred to the inner bin of the centrifugal separation component through a discharge pipe. The inner bin rotates at high speed in the outer bin to centrifuge the softened waste tire, separating steel wire and fiber from the rubber. The softened rubber after centrifugation reaches the gap between the outer bin and the inner bin through a number of filter holes provided on the side wall of the inner bin, and is then discharged through a second discharge pipe. The steel wire and fiber fall onto a screw conveyor through the first discharge pipe to place the steel wire and fiber in a magnetic separator for secondary separation. In this way, on the basis of the softening treatment of the waste tire, the rubber, steel wire and fiber are separated by combining centrifugal separation and magnetic separation, thereby achieving two separations in the waste tire treatment, greatly improving the resource separation and recycling efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of waste tire resource processing, and in particular to a waste tire recycling device and method. Background Art

[0002] Waste tires are used tires, or rubber products discarded due to wear or end of life. Waste tires are primarily composed of rubber, steel, carbon black, and other chemicals, with rubber and steel having high recycling value. The key to waste tire treatment lies in efficient resource separation and recycling. However, conventional equipment mostly utilizes cylindrical or single-layer separation designs, lacking optimized processes for rubber softening and multi-component separation. Summary of the Invention

[0003] To this end, the present application provides a waste tire recycling device and method to solve the problem that traditional waste tire processing can only separate single layers and cannot achieve efficient separation and recycling of resources.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] According to a first aspect of an embodiment of the present invention, an embodiment of the present application provides a waste tire recycling device, comprising:

[0006] A high-temperature reactor assembly is used to soften waste tires. The high-temperature reactor assembly includes a reactor shell in which a stirring assembly is provided;

[0007] a centrifugal separation assembly, used for receiving softened waste tires from the bottom of the high-temperature reactor assembly and performing centrifugal treatment to separate steel wire and fiber from rubber;

[0008] A screw conveyor, for receiving and conveying the separated steel wires and fibers, wherein the feeding end of the screw conveyor is located below the centrifugal separation assembly;

[0009] A magnetic separator is used to magnetically separate the steel wire and the fiber, and the unloading end of the screw conveyor is located above the loading end of the magnetic separator;

[0010] The centrifugal separation assembly comprises:

[0011] An outer bin and an inner bin, wherein the side wall of the inner bin is provided with a plurality of filter holes and is sleeved in the inner cavity of the outer bin, the bottom of the reactor shell passes through the top of the outer bin through a feeding pipe and is inserted into the inner bin, and the top of the outer bin supports the reactor shell through a support rod; and

[0012] The first discharge pipe is arranged at the bottom end of the inner bin, the bottom end of the outer bin is sleeved on the first discharge pipe through a bearing, and the feed end of the screw conveyor is arranged directly below the first discharge pipe.

[0013] Furthermore, the high temperature reactor assembly further includes:

[0014] A stainless steel coating is provided on the inner surface of the reactor shell;

[0015] a ceramic coating disposed on the inner surface of the stainless steel coating;

[0016] A heat-insulating cotton layer is provided on the outer surface of the reactor shell;

[0017] A feeding port is provided on the top of the reactor shell;

[0018] A sealing cover, which is arranged on the feeding port;

[0019] Support rods, two sets of support rods arranged opposite to each other are installed in the inner cavity of the discharge pipe;

[0020] A support block is fixed between the two sets of support rods;

[0021] A box body is arranged on top of the supporting block;

[0022] An electric push rod is installed in the box body;

[0023] The filter plate is provided with a plurality of filter holes. The piston rod of the electric push rod is connected to the filter plate, and the filter plate is driven by the piston rod to slide in the discharge pipe.

[0024] Furthermore, the stirring assembly includes:

[0025] A hollow tube with a plurality of vent holes formed therein, and both ends of the reactor shell are respectively connected to a hollow tube through bearings;

[0026] Side panels, the surface of the hollow tube is provided with a plurality of installation positions at intervals, each installation position is provided with two groups of side panels, and each group of side panels is provided with two side panels arranged opposite to each other;

[0027] A rotating shaft is installed between the two sets of side plates. A bearing is provided between each set of two side plates. The rotating shaft can be rotatably inserted into the bearing between the two side plates.

[0028] A stirring rod is mounted on the rotating shaft;

[0029] Connecting rods: connecting rods are installed between two adjacent groups of stirring rods;

[0030] The box is mounted on a set of side panels;

[0031] The servo motor is installed in the box, and the rotating shaft is installed to the output end of the servo motor.

[0032] Furthermore, the stirring assembly further comprises:

[0033] A first stepper motor is installed on the right side of the reactor shell;

[0034] A first gear, the output shaft of the first stepper motor is mounted with the first gear;

[0035] a second gear, the second gear being mounted on the hollow tube and meshingly connected with the first gear;

[0036] A hard tube, wherein the right end of the hollow tube is connected to the hard tube through a bearing sleeve;

[0037] The right end of the hard tube is connected to the gas injection pipe through a joint, and a valve is provided on the gas injection pipe.

[0038] Furthermore, the centrifugal separation component further comprises:

[0039] A second stepper motor is mounted on the bottom of the outer compartment;

[0040] a third gear mounted on an output shaft of the second stepper motor;

[0041] a fourth gear mounted on the first discharge pipe, and the third gear and the fourth gear are meshed and connected;

[0042] A second discharge pipe is installed externally on one side of the bottom end of the gap between the outer bin and the inner bin.

[0043] Furthermore, a scraping component is provided in the outer bin;

[0044] The scraping assembly comprises:

[0045] An annular groove is provided on the side wall of the outer compartment;

[0046] an electric heating wire wound in the annular groove;

[0047] a telescopic rod mounted on the outer surface of the inner compartment;

[0048] a scraper, mounted on one end of the telescopic rod and in contact with the inner surface of the outer bin;

[0049] The first spring is sleeved on the telescopic rod, and two ends of the first spring are respectively connected to the scraper and the inner bin.

[0050] Furthermore, a sealing assembly is provided between the outer compartment and the inner compartment;

[0051] The sealing assembly comprises:

[0052] Annular grooves are provided at the upper and lower ends of the outer bin where they meet the inner bin;

[0053] an annular plate disposed in the annular groove;

[0054] A sealing ring is installed on one side of the annular plate and is in close contact with the inner chamber;

[0055] A guide groove is provided on the outer bin on one side of the annular groove;

[0056] A guide rod is mounted on the other side of the annular plate and is slidably inserted into the guide groove;

[0057] The second spring is sleeved on the guide rod and its two ends are respectively connected to the annular groove and the annular plate.

[0058] Furthermore, a waste tire recycling device further includes: a waste heat recovery component for utilizing the waste heat in the high-temperature reactor component; the waste heat recovery component includes:

[0059] The heat exchange box is installed on the outer side of the middle part of the outer compartment;

[0060] A first pipe is installed on the top side wall of the heat exchange box and one end of the first pipe is connected to the side wall of the feed pipe. A valve is provided on the first pipe.

[0061] A drain pipe is installed on the bottom end of the heat exchange box and is provided with a valve;

[0062] Heat exchange tubes, installed in the heat exchange box;

[0063] A preheating box is installed on the outer side of the top end of the outer compartment, and the inner cavity of the preheating box stores water;

[0064] The second pipeline is installed on the side wall of the bottom end of the preheating box, and a valve is provided on the second pipeline.

[0065] Furthermore, the waste heat recovery component further includes:

[0066] A water pump is installed on the top of the heat exchange box, the liquid inlet end of the water pump is connected to the bottom end of the preheating box through the liquid inlet pipe, and the liquid outlet end of the water pump is connected to one end of the heat exchange tube through the liquid outlet pipe;

[0067] A connecting pipe, the other end of the heat exchange tube is installed with the connecting pipe, and one end of the connecting pipe is installed on the bottom end of the preheating box;

[0068] One-way valve, installed on one end of the connecting pipe.

[0069] According to a second aspect of an embodiment of the present invention, an embodiment of the present application provides a method for recycling waste tires, the method comprising the following specific steps:

[0070] Step 1: Cut the waste tires into tire blocks;

[0071] Step 2: Place the cut tire blocks and catalyst into the reactor shell through the loading port, and use a steam generator to flow high-temperature and high-pressure steam through the air injection pipe, rigid pipe, and hollow pipe into the reactor shell to soften the cut tire blocks.

[0072] Step 3: The first stepper motor is used to rotate the hollow tube and the stirring rod to turn the material; while the material is being turned, the servo motor is used to rotate the stirring rod to adjust the stirring angle of the stirring rod;

[0073] Step 4: After the tire blocks are softened, the filter plate is positioned in the reactor shell by an electric push rod, so that the softened tire blocks enter the inner chamber; the inner chamber is rotated by a second stepper motor to achieve centrifugation;

[0074] Step 5: The softened rubber after centrifugation is discharged through the second discharge pipe to collect the softened rubber and carry out subsequent processing. The steel wire and fiber fall onto the screw conveyor through the first discharge pipe to place the steel wire and fiber in the magnetic separator for secondary separation.

[0075] Compared with the existing technology, the implementation of this application has at least the following beneficial effects:

[0076] The embodiment of the present application provides a waste tire recycling device and method. First, the waste tire is softened by a high-temperature reactor assembly under stirring. The softened waste tire is then transferred to the inner bin of the centrifugal separation assembly through a discharge pipe. The inner bin rotates at high speed in the outer bin to centrifuge the softened waste tire, separating steel wire and fiber from the rubber. The softened rubber after centrifugation reaches the gap between the outer bin and the inner bin through a number of filter holes provided on the side wall of the inner bin, and is then discharged through a second discharge pipe. The steel wire and fiber fall onto a screw conveyor through the first discharge pipe to place the steel wire and fiber in a magnetic separator for secondary separation. In this way, on the basis of the softening treatment of the waste tire, the rubber, steel wire and fiber are separated by combining centrifugal separation and magnetic separation, achieving two separations in the waste tire treatment, greatly improving the resource separation and recycling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] To more intuitively illustrate the prior art and the present application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be considered as limiting conditions for implementing the present application; for example, based on the technical concepts disclosed in this application and the exemplary drawings, those skilled in the art are capable of easily making routine adjustments or further optimizations to the addition / reduction / attribution division of certain units, the specific shapes, positional relationships, connection methods, and dimensional ratios.

[0078] Figure 1 A schematic diagram of the overall structure of a waste tire recycling device provided in an embodiment of the present application;

[0079] Figure 2 A schematic side cross-sectional view of a high-temperature reactor assembly, a centrifugal separation assembly, and a waste heat recovery assembly of a waste tire recycling device provided in an embodiment of the present application;

[0080] Figure 3 for Figure 2 A schematic diagram of the structure at center A;

[0081] Figure 4 for Figure 2 A magnified schematic diagram of the structure at point B in the middle;

[0082] Figure 5 for Figure 2 A magnified schematic diagram of the structure at point C in the middle;

[0083] Figure 6 for Figure 2 A magnified schematic diagram of the structure at D in the middle;

[0084] Figure 7 A schematic top view of a hollow tube of a waste tire recycling device provided in an embodiment of the present application;

[0085] Figure 8 for Figure 7 A magnified schematic diagram of the structure at E in the middle;

[0086] Figure 9 A schematic diagram of a partial rear structural view of a waste heat recovery assembly of a waste tire recycling device provided in an embodiment of the present application;

[0087] Figure 10 A schematic diagram of the inner bin structure of a waste tire recycling device provided in an embodiment of the present application;

[0088] Figure 11 This is a schematic diagram of the top view of the outer and inner bins of a waste tire recycling device provided in an embodiment of the present application.

[0089] Description of reference numerals:

[0090] Reactor shell 10, stainless steel coating 11, ceramic coating 12, insulation cotton layer 13, feeding port 14, sealing cover 15, feeding pipe 16, support rod 17, support block 18, box body 19, electric push rod 191, filter plate 192, first hollow tube 20, side plate 21, rotating shaft 22, stirring rod 23, connecting rod 24, box body 25, servo motor 26, first stepper motor 27, first gear 28, second gear 29, hard tube 291, gas injection pipe 292, outer chamber 30, second hollow tube 31, inner bin 32, second stepper motor 33, third gear 34, fourth gear 35, discharge pipe 36, annular groove 40, electric heating wire 41, telescopic rod 42, scraper 43, first spring 44, heat exchange box 50, first pipeline 51, discharge pipe 52, heat exchange pipe 53, preheating box 54, second pipeline 55, water pump 57, connecting pipe 58, one-way valve 59, annular plate 60, sealing ring 61, guide groove 62, guide rod 63, second spring 64, screw conveyor 70, magnetic separator 80. DETAILED DESCRIPTION

[0091] The present application will be further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0092] The purpose of the embodiments of the present application is to achieve an integrated closed-loop process of softening, separation and recycling by designing a "rugby ball-shaped high-temperature reactor" and a "modular separation device", thereby significantly improving resource utilization.

[0093] refer to Figures 1 to 11 A waste tire recycling device disclosed in an embodiment of the present application includes: a high-temperature reactor assembly, a centrifugal separation assembly, a screw conveyor 70 and a magnetic separator 80.

[0094] The high-temperature reactor assembly is used to soften waste tires, and the high-temperature reactor assembly includes a reactor shell 10 .

[0095] In the embodiment of the present application, the shape of the reactor shell 10 is set to be rugby ball shape, which can not only help to uniformly heat the tire blocks, but also reduce the pressure concentration on the inner wall.

[0096] Furthermore, the high-temperature reactor assembly further includes: a stainless steel coating 11, a ceramic coating 12, and a thermal insulation layer 13. The stainless steel coating 11 is provided on the inner surface of the reactor shell 10, the ceramic coating 12 is provided on the inner surface of the stainless steel coating 11, and the thermal insulation layer 13 is provided on the outer surface of the reactor shell 10.

[0097] In the embodiments of the present application, by sequentially applying a stainless steel coating and a ceramic coating to the inner side of the reactor shell, not only can the inner side of the reactor shell be protected from corrosion, but also materials can be prevented from adhering to the inner side of the reactor shell. The provision of a thermal insulation layer can reduce heat loss in the reactor shell and improve energy efficiency.

[0098] Furthermore, the high temperature reactor assembly further comprises: a feed port 14 and a sealing cover 15. The feed port 14 is provided on the top of the reactor shell 10, and the sealing cover 15 is covered on the feed port 14.

[0099] In the embodiment of the present application, a stirring assembly is provided in the reactor shell 10. The stirring assembly comprises a hollow tube 20, side panels 21, a rotating shaft 22, stirring rods 23, a connecting rod 24, a housing 25, and a servo motor 26. The hollow tube 20 is provided with a plurality of vent holes. The ends of the reactor shell 10 are respectively connected to a hollow tube 20 via bearings. The surface of the hollow tube 20 is provided with a plurality of mounting positions, each of which is provided with two sets of side panels 21, and each set of side panels 21 has two opposing side panels 21. The rotating shaft 22 is mounted between the two sets of side panels 21, with a bearing provided between each set of side panels 21. The rotating shaft 22 is rotatably inserted into the bearing between the two side panels 21. The stirring rods 23 are mounted on the rotating shaft 22. A connecting rod 24 is provided between each set of stirring rods 23. The housing 25 is mounted on one set of side panels 21. The servo motor 26 is mounted in the housing 25, and the rotating shaft 22 is attached to the output end of the servo motor 26.

[0100] In the embodiment of the present application, the box body 25 is made of heat-insulating material, and a battery for powering the servo motor 26 and a first ventilation pipe capable of dissipating heat from the servo motor 26 can be set in the box body 25 as needed, and a valve is provided on the first ventilation pipe.

[0101] In the embodiment of the present application, the stirring assembly is provided so that the angle of the stirring rod can be adjusted when stirring the tire blocks to adapt to different material properties.

[0102] The stirring assembly also includes a first stepper motor 27, a first gear 28, a second gear 29, a rigid tube 291, and an air injection pipe 292. The first stepper motor 27 is mounted on the right side of the reactor shell 10. The first gear 28 is mounted on the output shaft of the first stepper motor 27. The second gear 29 is mounted on the hollow tube 20, and the second gear 29 and the first gear 28 are meshed. The right end of the hollow tube 20 is connected to the rigid tube 291 via a bearing. The right end of the rigid tube 291 is connected to the air injection pipe 292 via a joint. The air injection pipe 292 is equipped with a valve and is connected to the external steam generator.

[0103] The centrifugal separation component is used to receive the softened waste tires from the bottom of the high-temperature reactor component and perform centrifugal treatment to separate steel wire and fiber from rubber.

[0104] Specifically, the centrifugal separation assembly includes: an outer bin 30 and an inner bin 32. The side wall of the inner bin 32 is provided with a plurality of filter holes and is mounted in the inner cavity of the outer bin 30. The bottom of the reactor shell 10 passes through the top of the outer bin 30 through the discharge pipe 16 and is inserted into the inner bin. The discharge pipe 16 is provided with a valve, and the top of the outer bin 30 supports the reactor shell 10 through a support rod.

[0105] In the embodiment of the present application, the inner chamber has a porous design, the pore size range of the filter is greater than or equal to 2mm and less than or equal to 10mm, and the number and arrangement of the pores can be adjusted according to the material. The inner chamber rotates at a speed of 1000-5000rpm to achieve centrifugation.

[0106] Furthermore, the high-temperature reactor assembly also includes: support rods 17, support blocks 18, a box body 19, an electric push rod 191, and a filter plate 192. Two sets of support rods 17 are installed in the inner cavity of the discharge pipe 16, and the support block 18 is fixed between the two sets of support rods 17. The box body 19 is set on the top of the support block 18. The electric push rod 191 is installed in the box body 19. The filter plate 192 has a plurality of filter holes. The piston rod of the electric push rod 191 is connected to the filter plate 192, and the filter plate 192 is driven by the piston rod to slide in the discharge pipe 16.

[0107] In an embodiment of the present application, the box body 19 is made of heat-insulating material, and a battery for powering the electric push rod 191 and a second ventilation pipe capable of dissipating heat for the electric push rod 191 can be set in the box body 19 as needed, and a valve is provided on the second ventilation pipe.

[0108] Furthermore, the centrifugal separation assembly further includes a first discharge pipe 31. The first discharge pipe 31 is provided at the bottom end of the inner bin 32. The bottom end of the outer bin 30 is sleeved on the first discharge pipe 31 via a bearing. The feed end of the screw conveyor 70 is provided directly below the first discharge pipe 31.

[0109] Furthermore, the centrifugal separation assembly further includes: a second stepper motor 33, a third gear 34, and a fourth gear 35. The second stepper motor 33 is mounted on the bottom of the outer chamber 30; the third gear 34 is mounted on the output shaft of the second stepper motor 33; and the fourth gear 35 is mounted on the first discharge pipe (31), and the third gear 34 and the fourth gear 35 are meshed and connected.

[0110] Furthermore, the centrifugal separation assembly further includes a second discharge pipe 36. The second discharge pipe 36 is installed on one side of the bottom end of the gap between the outer bin 30 and the inner bin 32, facing outward.

[0111] Furthermore, a scraping assembly is provided in the outer bin 30, comprising an annular groove 40, an electric heating wire 41, a telescopic rod 42, a scraper 43, and a first spring 44. The annular groove 40 is formed on the sidewall of the outer bin 30; the electric heating wire 41 is wound within the annular groove 40; the telescopic rod 42 is mounted on the outer surface of the inner bin 32; the scraper 43 is mounted on one end of the telescopic rod 42 and contacts the inner surface of the outer bin 30; and the first spring 44 is sleeved on the telescopic rod 42, with its ends connected to the scraper 43 and the inner bin 32, respectively.

[0112] In the embodiment of the present application, a pressure relief pipe connected to the annular groove 40 can be provided on the outside of the outer chamber 30 as needed, and a valve is provided on the pressure relief pipe.

[0113] In the embodiment of the present application, by providing a scraping assembly, it is possible to maintain the softening temperature of the rubber when the material is centrifuged to avoid solidification, thereby facilitating the discharge of the rubber. In addition, it is also possible to reduce the amount of material residue in the outer bin; wherein, the telescopic rod and scraper provided can extend the service life of the equipment to a certain extent.

[0114] In addition, a sealing assembly is provided between the outer chamber 30 and the inner chamber 32; the sealing assembly comprises an annular groove, an annular plate 60, a sealing ring 61, a guide groove 62, a guide rod 63, and a second spring 64. An annular groove is provided at both the upper and lower ends of the outer chamber 30 where it interfaces with the inner chamber 32; the annular plate 60 is positioned within the annular groove; the sealing ring 61 is mounted on one side of the annular plate 60 and in close contact with the inner chamber 32; a guide groove 62 is provided on the outer chamber 30 on one side of the annular groove; a guide rod 63 is mounted on the other side of the annular plate 60 and is slidably inserted into the guide groove 62; a second spring 64 is sleeved on the guide rod 63, with its ends connected to the annular groove and the annular plate 60, respectively.

[0115] In the embodiments of the present application, by providing a high-temperature reactor assembly for softening waste tires, and by providing a centrifugal separation assembly for separating rubber from steel wire and fiber after the waste tires are softened, it is possible to solve the problem that most traditional equipment adopts a cylindrical or single-layer separation design and lacks optimized process problems for rubber softening and multi-component separation, and it is also possible to achieve the separation of the softened rubber immediately after the rubber is softened, thereby improving efficiency to a certain extent.

[0116] A waste tire recycling device disclosed in an embodiment of the present application also includes: a waste heat recovery component for utilizing the waste heat in the high-temperature reactor component; the waste heat recovery component includes: a heat exchange box 50, a first pipe 51, a drain pipe 52, a heat exchange pipe 53, a preheating box 54, a second pipe 55, a water pump 57, a connecting pipe 58 and a one-way valve 59. The heat exchange box 50 is installed on the middle outer side of the outer bin 30; the first pipe 51 is installed on the top side wall of the heat exchange box 50 and one end is connected to the side wall of the discharge pipe 16, and a valve is provided on the first pipe 51; the drain pipe 52 is installed on the bottom end of the heat exchange box 50, and a valve is provided on the drain pipe 52; the heat exchange pipe 53 is installed in the heat exchange box 50; the preheating box 54 is installed on the top outer side of the outer bin 30, and the inner cavity of the preheating box 54 stores water; the second pipe 55 is installed It is installed on the side wall of the bottom end of the preheating box 54, and a valve is provided on the second pipe 55; the water pump 57 is installed on the top of the heat exchange box 50, and the liquid inlet end of the water pump 57 is connected to the bottom end of the preheating box 54 through the liquid inlet pipe, and the liquid outlet end of the water pump 57 is connected to one end of the heat exchange tube 53 through the liquid outlet pipe; a connecting pipe 58 is installed at the other end of the heat exchange tube 53, and one end of the connecting pipe 58 is installed on the bottom end of the preheating box 54; a one-way valve 59 is installed on one end of the connecting pipe 58.

[0117] In the embodiment of the present application, a water injection pipe can be provided at the top of the preheating tank 54 as needed to replenish the water in the preheating tank 54 .

[0118] In the embodiment of the present application, by setting up a waste heat recovery component, the waste heat generated when the rubber block softens can be recovered and fed back to the high-temperature reactor component, thereby avoiding heat loss as much as possible and reducing energy consumption.

[0119] The bearings mentioned above are preferably the bearings in patent CN217736027U.

[0120] The screw conveyor 70 is used to receive and convey the separated steel wires and fibers. The feeding end of the screw conveyor 70 is located below the centrifugal separation component.

[0121] The magnetic separator 80 is used to magnetically separate the steel wire and the fiber. The unloading end of the screw conveyor 70 is located above the loading end of the magnetic separator 80 .

[0122] In this embodiment, a magnetic separator 80 is used to separate steel wire and fiber using a magnetic field. The magnetic field strength of the magnetic separator 80 is greater than or equal to 1.5 T, enabling high-speed, continuous separation. The separated steel wire and fiber are discharged through separate outlets.

[0123] The embodiment of the present application provides a waste tire recycling device, which first softens the waste tires under stirring through a high-temperature reactor assembly, and then transfers the softened waste tires to the inner bin of the centrifugal separation assembly through a discharge pipe. The inner bin rotates at high speed in the outer bin to centrifuge the softened waste tires, separating steel wire and fiber from the rubber. The softened rubber after centrifugation reaches the gap between the outer bin and the inner bin through a number of filter holes provided on the side wall of the inner bin, and is then discharged through a second discharge pipe. The steel wire and fiber fall onto a screw conveyor through the first discharge pipe to place the steel wire and fiber in a magnetic separator for secondary separation. In this way, on the basis of softening the waste tires, the rubber, steel wire and fiber are separated by combining centrifugal separation and magnetic separation, achieving two separations in the waste tire treatment, greatly improving the resource separation and recycling efficiency.

[0124] Corresponding to the waste tire recycling device disclosed above, the embodiment of the present invention further discloses a waste tire recycling method. The waste tire recycling method disclosed in the embodiment of the present invention is described in detail below in conjunction with the waste tire recycling device described above.

[0125] The following is a detailed description of the specific steps of a waste tire recycling method provided in an embodiment of the present application.

[0126] Step 1: Cut the waste tires into tire blocks. Specifically, cut the waste tires into small blocks of 10-20 cm.

[0127] Step 2: Place the cut tire blocks and catalyst into the reactor shell 10 through the loading port 14, and use the steam generator to allow high-temperature and high-pressure steam to flow into the reactor shell 10 through the gas injection pipe 292, the hard pipe 291 and the hollow pipe 20 to soften the cut tire blocks.

[0128] In an embodiment of the present application, the catalyst is potassium carbonate or sodium hydroxide, the temperature of the high-temperature high-pressure steam is greater than or equal to 150°C and less than or equal to 280°C, and the pressure of the high-temperature high-pressure steam is greater than or equal to 0.5MPa and less than or equal to 3.0MPa.

[0129] Step 3: The first stepper motor 27 is used to rotate the hollow tube 20 and the stirring rod 23 to turn the material; when the material is turned, the servo motor 26 is used to rotate the stirring rod 23 to adjust the stirring angle of the stirring rod 23.

[0130] In the embodiment of the present application, the stirring rod 23 is used to stir the material, ensuring uniform heating of the material and reducing the adhesion of the rubber to the steel wire and fiber to an optimal separation state. Furthermore, while stirring, the stirring rod 23 can be rotated by the servo motor 26 to adjust the stirring angle of the stirring rod 23, further adapting to different material characteristics and ensuring more uniform heating of the material.

[0131] Step 4: After the tire blocks are softened, the filter plate 192 is positioned in the reactor shell 10 by the electric push rod 191 so that the softened tire blocks enter the inner bin 32 ; the inner bin 32 is rotated by the second stepper motor 33 to achieve centrifugation.

[0132] Step 5: The softened rubber after centrifugation is discharged through the second discharge pipe 36 to be collected and subsequently processed. The steel wire and fiber fall onto the screw conveyor 70 through the first discharge pipe 31 to be placed in the magnetic separator 80 for secondary separation.

[0133] In an embodiment of the present application, the steel wire and the fiber fall onto the screw conveyor 70 through the first discharge pipe 31 so that the steel wire and the fiber can be placed in the magnetic separator 80 for secondary separation. The separated steel wire enters the recovery area, and the fiber is further purified for composite material processing.

[0134] Furthermore, during the centrifugation process, the temperature of the softened rubber is maintained by the electric heating wire 41 to prevent solidification, and the softened rubber blocks remaining on the outer chamber 30 are scraped off by the scraper 43 to avoid waste and blockage.

[0135] In addition, when step 2 is running, the steam that has undergone heat exchange flows into the heat exchange box 50 through the first pipe 51. At this time, the water in the preheating box 54 is made to flow in the heat exchange tube 53 by the water pump 57, and heat is exchanged again with the steam that has undergone heat exchange. The water in the preheating box 54 is preheated by recovering the waste heat of the steam. After the preheating temperature reaches the upper limit value, the water can be made to flow into the steam generator through the second pipe 55, so as to increase the starting temperature of water heating and reduce energy consumption.

[0136] The embodiment of the present application provides a method for recycling waste tires. First, the waste tires are softened by a high-temperature reactor assembly under stirring. The softened waste tires are then transferred to the inner bin of the centrifugal separation assembly through a discharge pipe. The inner bin rotates at high speed in the outer bin to centrifuge the softened waste tires, separating steel wire and fiber from the rubber. The softened rubber after centrifugation reaches the gap between the outer bin and the inner bin through a number of filter holes provided on the side wall of the inner bin, and is then discharged through a second discharge pipe. The steel wire and fiber fall onto a screw conveyor through the first discharge pipe to place the steel wire and fiber in a magnetic separator for secondary separation. In this way, on the basis of the softening treatment of the waste tires, the rubber, steel wire and fiber are separated by combining centrifugal separation and magnetic separation, achieving two separations in the waste tire treatment, greatly improving the efficiency of resource separation and recycling.

[0137] The technical features of the above embodiments can be arbitrarily combined as long as there is no contradiction in the combination of these technical features. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A waste tire recycling device, characterized in that: The device comprises: A high-temperature reactor assembly is used for softening waste tires, the high-temperature reactor assembly comprising a reactor shell (10), wherein a stirring assembly is provided in the reactor shell (10); a centrifugal separation assembly, used for receiving softened waste tires from the bottom of the high-temperature reactor assembly and performing centrifugal treatment to separate steel wire and fiber from rubber; A screw conveyor (70) is used to receive and convey the separated steel wires and fibers, wherein a feeding end of the screw conveyor (70) is located below the centrifugal separation assembly; A magnetic separator (80) is used for magnetically separating the steel wire and the fiber, and the unloading end of the screw conveyor (70) is located above the loading end of the magnetic separator (80); The centrifugal separation assembly comprises: An outer bin (30) and an inner bin (32), wherein the side wall of the inner bin (32) is provided with a plurality of filter holes and is fitted into the inner cavity of the outer bin (30), the bottom of the reactor shell (10) passes through the top of the outer bin (30) through a feed pipe (16) and is inserted into the inner bin (32), and the top of the outer bin (30) supports the reactor shell (10) through a support rod; and A first discharge pipe (31) is provided at the bottom end of the inner bin (32), the bottom end of the outer bin (30) is sleeved on the first discharge pipe (31) via a bearing, and the feed end of the screw conveyor (70) is provided directly below the first discharge pipe (31); The stirring assembly comprises: The hollow tube (20) is provided with a plurality of vent holes, and the two ends of the reactor shell (10) are respectively connected to the hollow tube (20) through bearings; Side plates (21), the surface of the hollow tube (20) is provided with a plurality of installation positions at intervals, each installation position is provided with two groups of side plates (21), and each group of side plates (21) is provided with two side plates (21) arranged opposite to each other; A rotating shaft (22) is installed between two sets of side plates (21), a bearing is provided between each set of two side plates (21), and the rotating shaft (22) is rotatably inserted into the bearing between the two side plates (21); A stirring rod (23) is mounted on the rotating shaft (22); Connecting rods (24), each of which is installed between two adjacent groups of stirring rods (23); A box body (25) is mounted on a set of side panels (21); A servo motor (26) is installed in the box (25), and the rotating shaft (22) is installed to the output end of the servo motor (26); The outer bin (30) is provided with a scraping assembly; The scraping assembly comprises: an annular groove (40) formed on a side wall of the outer chamber (30); An electric heating wire (41) is wound in the annular groove (40); a telescopic rod (42) mounted on the outer surface of the inner compartment (32); a scraper (43) mounted on one end of the telescopic rod (42) and in contact with the inner surface of the outer bin (30); The first spring (44) is sleeved on the telescopic rod (42), and the two ends of the first spring (44) are respectively connected to the scraper (43) and the inner bin (32).

2. The waste tire recycling equipment according to claim 1, characterized in that: The high temperature reactor assembly further comprises: A stainless steel coating (11) is provided on the inner surface of the reactor shell (10); a ceramic coating (12) disposed on the inner surface of the stainless steel coating (11); A heat-insulating cotton layer (13) is provided on the outer surface of the reactor shell (10); A feeding port (14) is provided on the top of the reactor shell (10); A sealing cover (15) is provided on the feeding port (14); Support rods (17), two sets of support rods (17) arranged opposite to each other are installed in the inner cavity of the discharge pipe (16); A support block (18) is fixed between the two sets of support rods (17); A box body (19) is arranged on top of the support block (18); An electric push rod (191) is installed in the box body (19); The filter plate (192) is provided with a plurality of filter holes. The piston rod of the electric push rod (191) is connected to the filter plate (192), and the filter plate (192) is driven by the piston rod to slide in the discharge pipe (16).

3. The waste tire recycling equipment according to claim 2, characterized in that: The stirring assembly also includes: A first stepper motor (27), the first stepper motor (27) is installed on the right side of the reactor shell (10); a first gear (28), the output shaft of the first stepper motor (27) being mounted with the first gear (28); a second gear (29), the second gear (29) being mounted on the hollow tube (20), and the second gear (29) being meshedly connected with the first gear (28); A hard tube (291), the right end of the hollow tube (20) is connected to the hard tube (291) through a bearing sleeve; An air injection pipe (292), the right end of the hard pipe (291) is connected to the air injection pipe (292) through a joint, and a valve is provided on the air injection pipe (292).

4. The waste tire recycling equipment according to claim 3, characterized in that: The centrifugal separation assembly further comprises: A second stepper motor (33) is mounted on the bottom of the outer compartment (30); a third gear (34) mounted on an output shaft of the second stepping motor (33); a fourth gear (35) mounted on the first discharge pipe (31), and the third gear (34) and the fourth gear (35) are meshed and connected; A second discharge pipe (36) is installed on one side of the bottom end of the gap between the outer bin (30) and the inner bin (32).

5. The waste tire recycling equipment according to claim 4, characterized in that: A sealing assembly is provided between the outer bin (30) and the inner bin (32); The sealing assembly comprises: Annular grooves are provided at the upper and lower ends of the outer bin (30) where they connect with the inner bin (32); an annular plate (60) disposed in the annular groove; A sealing ring (61) is mounted on one side of the annular plate (60), and the sealing ring (61) is in close contact with the inner chamber (32); A guide groove (62) is provided on the outer bin (30) on one side of the annular groove; A guide rod (63) is mounted on the other side of the annular plate (60) and is slidably inserted into the guide groove (62); The second spring (64) is sleeved on the guide rod (63) and its two ends are respectively connected to the annular groove and the annular plate (60).

6. The waste tire recycling equipment according to claim 4, characterized in that: The device further includes: a waste heat recovery component for utilizing waste heat in the high-temperature reactor component; the waste heat recovery component includes: A heat exchange box (50) is installed on the outer side of the middle portion of the outer compartment (30); A first pipe (51) is installed on the top side wall of the heat exchange box (50) and one end of the first pipe is connected to the side wall of the feed pipe (16). A valve is provided on the first pipe (51); A drain pipe (52) is installed on the bottom end of the heat exchange box (50), and a valve is provided on the drain pipe (52); A heat exchange tube (53) is installed in the heat exchange box (50); A preheating box (54) is installed on the outer side of the top end of the outer bin (30), and the inner cavity of the preheating box (54) stores water; The second pipe (55) is installed on the side wall of the bottom end of the preheating box (54), and a valve is provided on the second pipe (55).

7. The waste tire recycling equipment according to claim 6, characterized in that: The waste heat recovery component also includes: A water pump (57) is installed on the top of the heat exchange box (50), the liquid inlet end of the water pump (57) is connected to the bottom end of the preheating box (54) through a liquid inlet pipe, and the liquid outlet end of the water pump (57) is connected to one end of the heat exchange tube (53) through a liquid outlet pipe; A connecting pipe (58), the other end of the heat exchange tube (53) is installed with the connecting pipe (58), and one end of the connecting pipe (58) is installed on the bottom end of the preheating box (54); A one-way valve (59) is installed on one end of the connecting pipe (58).

8. A waste tire recycling method according to any one of claims 4 to 7, characterized in that: The method comprises the following specific steps: Step 1: Cut the waste tires into tire blocks; Step 2: placing the cut tire blocks and the catalyst into the reactor shell (10) through the loading port (14), and using a steam generator to allow high-temperature and high-pressure steam to flow into the reactor shell (10) through the gas injection pipe (292), the hard pipe (291) and the hollow pipe (20) to soften the cut tire blocks; Step 3: The hollow tube (20) is driven by the first stepper motor (27) to rotate the stirring rod (23) to stir the material; while the material is being stirred, the stirring rod (23) is rotated by the servo motor (26) to adjust the stirring angle of the stirring rod (23); Step 4: After the tire block is softened, the filter plate (192) is positioned in the reactor shell (10) by the electric push rod (191), so that the softened tire block enters the inner bin (32); the inner bin (32) is rotated by the second stepper motor (33) to achieve centrifugation; Step 5: The softened rubber after centrifugation is discharged through the second discharge pipe (36) to collect the softened rubber and carry out subsequent processing. The steel wire and fiber fall onto the screw conveyor (70) through the first discharge pipe (31) to place the steel wire and fiber in the magnetic separator (80) for secondary separation.

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