78 results about "Tire recycling" patented technology

The invention discloses a thermal cracking carbon black iodine absorption value test detection method, and relates to the technical field of material detection. The method comprises the following steps: drying thermal cracking carbon black at 125 DEG C for 1 hour to remove water, weighing 0.5 g of a sample, stirring and adsorbing with 0.04730 mol / L iodine solution at the rotating speed of 10-30 r / min for 10-30 minutes, carrying out centrifugal separation at the rotating speed of 3000-5000 r / min, ensuring that no residual carbon black exists in supernate through light transmittance detection, titrating with 0.03940 mol / L sodium thiosulfate solution, and calculating an iodine absorption value by combining a blank test. The innovation point is an exclusive drying process, dynamic adsorption-centrifugation synergy and a quantitative quality control system. The method has the beneficial effects that the detection period is shortened to be within 1 hour, the measurement error is reduced to + / -1.5%, the problems of insufficient adsorption separation and the like of a conventional method are solved, and the method is suitable for carbon black quality control in the fields of waste tire recovery and the like.

The utility model relates to the technical field of automobile disassembly, and discloses scrapped tire recycling and disassembling equipment which comprises a base plate, the base plate is a plate with an L-shaped side wall surface, a receiving groove is formed in the front wall surface of the base plate, and a first motor is arranged on the rear wall surface of the base plate; the stripping structure is arranged on the wall face of the base plate and used for separating a tire from a hub, the stripping structure comprises first air cylinders, clamping plates, second air cylinders and a top disc, the first air cylinders are symmetrically and movably arranged on the rear wall face of the base plate, the clamping plates are fixedly connected to the front wall faces of the first air cylinders, and the second air cylinders are arranged on the rear wall face of the base plate; the top disc is fixedly connected to the front wall face of the second air cylinder, the clamping plates and the top disc can penetrate through the interior of the containing groove, the stripping structure clamps the tire through the symmetrical clamping plates and is matched with the top disc to eject the hub out, and therefore stripping without collision in the whole process is achieved. Therefore, the recovery personnel have easy working pressure.

The invention relates to the field of rubber recovery, in particular to an automobile tire recovery processing device and method.The automobile tire recovery processing device comprises a rotating part, a plurality of leakage grooves are formed in the rotating part, a plurality of feeding plates are fixedly connected to the inner wall of the rotating part, a crushing box is arranged in the rotating part, a material guide plate is fixedly connected to the crushing box, and the material guide plate is obliquely arranged; a crushing mechanism is arranged in the crushing box, a driving mechanism is connected below the rotating part, a plurality of through grooves are formed in the surface of the guide plate, the crushing mechanism comprises two crushing rollers, the two crushing rollers are rotationally connected in the crushing box, staggered teeth are arranged on the two crushing rollers, and a plurality of meshing teeth are arranged on the surfaces of the two crushing rollers; the tops of the multiple meshing teeth on the two crushing rollers face oppositely, and the tires can be circularly crushed and screened.

The application relates to the technical field of aviation tire recycling, in particular to an aviation tire recycling treatment equipment which can completely strip off a steel wire radial net, simplify a process flow, has high steel wire radial net recycling efficiency, reduces rubber waste and environmental pollution; the equipment comprises a high-pressure jet system and a nozzle group; further comprises a clamping mechanism, a sub-frame, an electromagnetic coil, an electromagnet, a plurality of hydraulic cylinders I and a hydraulic station, the electromagnet is installed on the sub-frame through the plurality of hydraulic cylinders I, the electromagnet is concentrically arranged with the electromagnetic coil, the hydraulic station is connected with the plurality of hydraulic cylinders I, the clamping mechanism is used for clamping the aviation tire, the clamping mechanism moves on the base to send the aviation tire into the electromagnetic coil, the electromagnetic coil generates a high-frequency magnetic field in the inside to heat the steel wire radial net in the aviation tire, the plurality of hydraulic cylinders I drive the electromagnet to approach and move away from the electromagnetic coil, the electromagnet generates a magnetic force to suck out the steel wire radial net from the aviation tire, and the nozzle group sprays high-pressure jets to crush the aviation tire.

The invention discloses a rotary clamping device for repairing a waste tire, and relates to the technical field of tire recycling and reusing, the rotary clamping device comprises a support table, a bottom supporting mechanism, a top pressing mechanism and a clamping mechanism; the bracket table is provided with a mounting platform; the bottom supporting mechanism comprises a bottom driver and two bottom rollers, and the rollers are rotationally arranged on the mounting platform; the top pressing mechanism comprises a support plate, a lifting plate, a lifter, a pressing wheel and a pressing wheel driver; the supporting plate is fixed to the installation platform, and the lifter is installed on the supporting plate and drives the lifting plate to be close to or away from the bottom supporting mechanism. The pressing wheel driver is fixed on the lifting plate and drives the lower pressing wheel to rotate; the clamping mechanism comprises a clamping driver, a first clamping rod group and a second clamping rod group; the clamping driver is installed on the supporting plate, the supporting plate is provided with a through hole, the free ends of the two clamping rod sets can penetrate through the hole to extend to the side close to the bottom roller, and the driver drives the two rod sets to be close to or away from each other in a tire seam allowance. The tire rotating stability and the working efficiency are improved, and the labor intensity is reduced.

The present invention relates to the field of separation, and in particular to a separation device for recycling waste tires. The technical problem is that although traditional mechanical separation can preliminarily process steel wire and rubber, when the steel wire is clumped, it is difficult for the equipment to separate the steel wire clumps, resulting in difficulty in completely peeling off the rubber particles. A separation device for recycling waste tires, comprising a bracket; a cylinder is mounted on the bracket, and a discharge port is provided at the bottom of the cylinder. The turntable and sixteen toggle rods are driven to rotate synchronously by a servo motor and a transmission assembly. The rotation of the turntable further drives the outer gear ring to rotate, and the outer gear ring drives the gear to rotate in the opposite direction. The turntable realizes reverse rotation through four card rods linking the lifting cylinder, hollow shaft, four separation nets, electromagnets and sixteen matching rods. The forward rotation of the sixteen toggle rods interacts with the reverse rotation of the sixteen matching rods, so that the entangled steel wire is gradually peeled off under the action of shearing, stirring and tearing forces.

The utility model relates to the technical field of crushing and grinding, specifically to a kind of crushing and grinding device for waste rubber tire recycling and processing, including the box of one end open one end closed, first through-hole is set up in the box, the first through-hole is set up in the box, two first sliding slots are set up, the screening assembly includes two sliding strips, sieve plate, extension plate, collection plate and two first limiting plates, extension plate slides, because sieve plate is fixed on sliding strip, make sieve plate slide along first sliding slot, by extension plate quick shaking, realize vibration, because sieve plate is inclined design, make unqualified rubber powder move to the other side, make rubber powder slowly from collection plate into secondary grinding, to unqualified rubber powder secondary grinding, solve the problem that filter is damaged due to serious blockage, prevent large rubber into subsequent production link, make final product appear more balanced, improve the quality and performance of product.

This invention discloses a special reinforcing steel fiber for all-solid waste concrete and its modification method, belonging to the field of building materials technology. The reinforcing steel fiber uses recycled steel fiber from automobile tires as the core raw material. Through a graded process of raw material pretreatment, dopamine coating, and ettringite deposition modification, a chemical bonding layer and a microstructure reinforcing layer are formed on the fiber surface, significantly improving its interfacial bonding performance with the all-solid waste concrete matrix. The suitable all-solid waste concrete system consists of granulated blast furnace slag powder, industrial by-product gypsum, alkaline industrial by-products, and iron tailings sand, achieving 100% solid waste utilization. When the modified steel fiber content is 1-2%, the 28-day compressive strength of the concrete increases by over 10%, and the flexural strength increases by over 100%, combining environmental friendliness and high performance, providing an innovative solution for solid waste resource utilization and building material upgrading.

The application relates to the technical field of waste tire treatment, and discloses a waste tire recycling treatment equipment, which comprises a fixed base, a disc for placing waste tires is rotationally arranged on the fixed base, a positioning frame capable of ascending and descending is arranged above the disc, a cutting knife for cutting the waste tires is rotationally arranged on the outer side of the positioning frame; a positioning block is fixed to the outer surface of the disc, a rotating shaft is rotationally arranged on the positioning block, a rotating plate is fixed to the circumference of the rotating shaft, an elastic movable rod is arranged in the disc, a spherical ball is fixed to the end of the movable rod, and a fixed disc is arranged in the disc. When the waste tires are cut, the rotating plate is rotated, the side ring can be lifted outward, the side ring at the cutting position can be kept at a certain angle with the tread, the cutting is facilitated, and the side ring and the tread can be separated more sufficiently.

The utility model discloses a steel wire cut-off device for waste vehicle tire recovery, which relates to the technical field of tire recovery and comprises a lower machine base, a horizontal conveying belt, a cut-off mechanism and a steel wire transverse extrusion mechanism. The steel wire transverse extrusion mechanism comprises a side face limiting clamping plate arranged through a first hydraulic cylinder, and the side face limiting clamping plate is perpendicular to the horizontal conveying belt in the lower machine base. And the steel wire longitudinal extrusion mechanism comprises a longitudinal extrusion plate arranged through a second hydraulic cylinder. According to the utility model, the steel wire transverse extrusion mechanism is used for transversely extruding the tire waste steel wires, and meanwhile, the steel wire longitudinal extrusion mechanism is used for longitudinally extruding the tire waste steel wires, so that larger waste steel wire bundles can be extruded into smaller rectangular strips through successive action in the two directions; and subsequent cutting-off treatment through the cutting-off mechanism is facilitated.

The invention discloses waste rubber tire recycling equipment, which belongs to the technical field of recycling equipment and comprises a supporting device, a cutting device, a wire drawing device and a crushing device. The cutting device is installed on the machine frame, the wire drawing device is arranged above the cutting device, the crushing device is installed at the bottom of the cutting device, after waste rubber tires are cut off through the cutting device, wire drawing is conducted through the wire drawing device, crushing operation is conducted through the crushing device, and recycling treatment work is completed. Through the arrangement of the cutting-off device, the steel wires are pulled out more easily, the deformation degree is low, winding is not prone to occurring, the steel wires are taken down more easily even if being wound, production is more time-saving and labor-saving, and the tire recycling work efficiency is improved.

The invention relates to the technical field of old tire recovery, in particular to a rubber tire waste treatment device with a collection function, comprising a shell and a support frame mounted on the shell; the device further comprises a supporting table. The inner right part of the shell is connected with a supporting table; the supporting table is connected with a stripping assembly used for stripping opening ring rubber. According to the rubber tire waste treatment device with the collecting function obtained through the design, a plurality of opening rings can be stacked in advance through the inner limiting cylinder and the outer limiting cylinder, and then each opening ring is sequentially pulled to the position between the first pressing roller and the second pressing roller through cooperation of the U-shaped plate and the L-shaped plate, so that feeding and discharging do not need to be manually controlled by an operator, and the working efficiency is improved. Compared with the prior art which depends on manual feeding, monitoring and discharging of operators, the device has the advantages that the working intensity of the operators is relieved, a large amount of time is saved, and the treatment efficiency of the opening ring is improved.

To provide a tire recycling information presentation method, tire recycling information presentation program, tire recycling information presentation device, and tire recycling information presentation system capable of promoting tire recycling.SOLUTION: An acquisition unit 50 acquires individual information by reading individual information previously stored in an RFID tag 34 disposed on a tire using a reader. A communication unit 54 accesses a database 44 of a database server and acquires recycling information of the tire corresponding to the individual information acquired by the acquisition unit 50 from the database. A display processing unit performs processing to display the recycling information acquired by the communication unit on a display unit, thereby presenting the recycling information of the tire.SELECTED DRAWING: Figure 2

The utility model discloses an automobile scrapped tire recycling and disassembling device, belongs to the technical field of scrapped tire recycling, solves the problem that hubs with different sizes are inconvenient to position, and comprises a base, the outer surface of the base is rotatably connected with a clamping device, and the outer surface of the base is slidably connected with a cutting mechanism. A control panel is fixedly connected to the outer surface of the base, and the clamping device comprises a rotating frame rotationally connected to the outer surface of the base. According to the device, a hub can be placed on the upper surface of the rotating frame, then a servo motor is started, an output shaft of the servo motor drives a driving bevel gear to rotate, the driving bevel gear rotates to drive a driven bevel gear to rotate, the driven bevel gear rotates in the opposite direction, the driven bevel gear rotates to drive a threaded rod to rotate, and the threaded rod rotates to drive the hub to rotate. And the threaded rod rotates to drive the two sets of connecting blocks to move in the opposite directions, the inner walls of the hubs can be attached conveniently, and then the hubs of different sizes can be fixed conveniently.

The invention discloses a high-temperature-resistant solid tire tread material and application thereof, and relates to the technical field of nano modified materials. The material is composed of matrix resin, a reinforcing filler, a regenerated material and a composite cross-linking agent, wherein the matrix resin adopts an ethylene-propylene copolymer and maleic anhydride grafted ethylene-propylene copolymer composite system, and the grafting rate is 5-15 wt%; the reinforcing filler is iron-doped porous nano aluminum oxide; the regenerated material is polyester fiber recovered from waste tires; and the cross-linking system is prepared by carrying out plasma treatment on dicumyl peroxide and m-phenylenediamine bismaleimide. A gradient structure with the surface layer grafting rate of 15% and the core layer grafting rate of 5% is formed through a gradient pressing technology, and cross-linked network optimization is achieved in combination with a dynamic vulcanization technology. The material is particularly suitable for high-temperature heavy-load scenes such as harbor machinery and mining equipment, and the service life is prolonged by 2-3 times. Through the nano-porous structure design, gradient interface regulation and control and regeneration material cooperation, the high performance and environmental protection characteristics are achieved.

The present application provides are a tire recycling method, a storage medium, an electronic device, and a computer product program. The tire recycling method comprises: acquiring and pre-treating waste tires to obtain waste to be recycled; adding a first set amount of the waste material to be recycled, a first set concentration of a solvent, a second set amount of a functional compound, and a third set amount of a catalyst to a batch reaction kettle and performing a chemical reaction under first set condition to obtain a first product system; and carrying out post-treatment on the first product system to obtain a product, wherein the first set condition comprises: a reaction time of 1 to 6 hours and a reaction temperature of 80ºC to 120ºC, so as to solve the problem in the prior art that it is difficult to use vulcanized rubber as a raw material for a high-performance rubber product due to the breakage of rubber molecular chains and the expansion of the molecular weight distribution after desulfurization.

The invention relates to the technical field of waste tire recovery, in particular to a waste tire crushing device. The technical problem that according to an existing tire crushing device, tires are possibly in a horizontal state after falling into a hopper, so that the tires cannot be wound between crushing rollers immediately, and the tire crushing efficiency is not high is solved. A waste tire crushing device comprises a base, a mounting frame is arranged on the base, a crushing frame is arranged on the mounting frame, two crushing rollers are rotationally connected to the crushing frame, transmission gears are arranged on the two crushing rollers, and a first driving motor is arranged on the crushing frame. The tire can be cut off through the cutting blade, the broken end of the tire can be pushed away in the direction close to the crushing rollers through rotation of the swing rod, the end, pushed to descend by the swing rod, of the tire can be rolled up through rotation of the two crushing rollers, and the cut face of the tire is conveyed to the twisting position of the crushing rollers, so that the tire can be twisted more rapidly through the crushing rollers; the tires are prevented from being horizontal on the surfaces of the crushing rollers, so that the tire crushing efficiency is improved.

The invention discloses a steel wire with a recycled material, a manufacturing method of the steel wire and a tire, relates to the technical field of metal material processing, and aims to solve the problem that in the prior art, the copper content of a tire recycled steel wire is increased, so that the steel wire locally has a hot brittleness trend and risk. The manufacturing method comprises the steps of: manufacturing a steel material from a raw material comprising at least 10% of tire recovery steel wires; reducing the diameter of the steel to obtain a to-be-treated steel wire with a first preset size; the steel wire to be treated is subjected to pretreatment, and the steel wire to be treated is subjected to one of the following pretreatment modes: the steel wire to be treated is subjected to heat treatment; or carrying out heat treatment and Ni plating treatment on the steel wire to be treated; wherein the heat treatment temperature is 300 DEG C or above; and the pretreated reusable steel wire is obtained. The method is suitable for reprocessing steel wires with recycled materials, and waste steel wires generated in the tire recycling process are fully utilized.

The application relates to the technical field of tire recycling equipment, in particular to a polyester tire waste regeneration treatment equipment which comprises a base, a pair of support frames are installed on the upper end of the base, a treatment box is installed between the support frames, a crushing assembly is arranged in the treatment box, a screening assembly is installed on the circumferential surface of the treatment box, a screening cylinder is rotationally connected to the circumferential surface of the treatment box, a plurality of sliding seats are equidistantly installed on the circumferential surface of the screening cylinder, sliding frames are slidably connected in the sliding seats, connecting sleeves are fixedly connected to the surfaces of the sliding frames and located outside the screening cylinder, compression springs are installed between the sliding seats and the sliding frames, connecting frames are installed at the lower ends of the support frames, an inclined groove is formed in the surface of the connecting frame, and a stress rod is slidably connected in the inclined groove. Through the action of the screening assembly, the polyester tire waste can be stably and efficiently screened, meanwhile, the relatively large tire waste can be re-transported into the treatment box for crushing again, and the crushing effect of the tire waste is guaranteed.

The present application relates to the field of asphalt preparation, more particularly to a preparation process of elastomer modified asphalt. The process comprises the following steps: step one: preparing melted asphalt; step two: preparing rubber threads processed from tires and cutting them into fixed lengths; step three: adding the fixed-length rubber threads into the melted asphalt; step four: thoroughly mixing the asphalt and the rubber threads and discharging. The preparation process of elastomer modified asphalt also uses a preparation device of elastomer modified asphalt, which comprises a mixing barrel, a moving assembly walking along the upper side of the mixing barrel, a feeding assembly for feeding rubber threads arranged on the moving assembly, and a cutting assembly for cutting rubber threads arranged on the moving assembly. The device has the advantage of being able to cut rubber threads recycled from tires and add them into asphalt preparation to enhance the elasticity of the asphalt.

The invention relates to the technical field of solid waste recycling, in particular to a method for preparing an adsorption material from kitchen biogas residues, which comprises the following six steps: pretreatment, high-temperature pyrolysis carbonization, acid pickling, water washing, physical activation and sample detection. According to the method, kitchen anaerobic fermentation biogas residues and vulcanized carbon black recycled from rubber tires are scientifically, reasonably and synergistically mixed to prepare the adsorption material, and the kitchen biogas residues are subjected to series pretreatment, high-temperature pyrolysis carbonization, acid pickling and water washing and physical activation processing, so that the biogas residues are subjected to non-toxic treatment, and meanwhile, the adsorption efficiency is improved. According to the preparation method, the adsorption material with the porous structure can be prepared, the prepared adsorption material can be applied to various fields, diversified, multi-field and multi-scene application of the kitchen biogas residues is achieved, and meanwhile the prepared porous adsorption material can bring higher economic benefits and social utilization value.

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.

This application relates to the field of tire recycling and processing technology, and in particular to a process control method and system for producing light oil from waste tires. The method includes: acquiring raw material characteristic data of waste tires; determining a set of pretreatment parameters based on the raw material characteristic data; controlling the processing equipment to process the waste tires according to the pretreatment parameter set, and acquiring real-time material information after processing; analyzing the real-time material information to obtain material characteristics, and determining the dynamic pyrolysis temperature and dynamic reaction atmosphere based on the material characteristics; and controlling the processing equipment to upgrade the material according to the dynamic pyrolysis temperature and dynamic reaction atmosphere to obtain light oil that meets standards. Dynamically adjusting the pyrolysis temperature and reaction atmosphere effectively controls sulfur migration and metal catalytic activity, improving the yield and quality of light oil and reducing the generation of harmful substances. Through refining, light oil that meets standards is obtained, increasing commercial value while reducing environmental pollution.

The invention provides a waste tire treatment process, and solves the problems that an existing waste tire treatment method comprises landfill, incineration and reclaimed rubber production, during landfill and incineration, the environment is harmed, waste gas and waste rubber are generated, and underground water is polluted; and the reclaimed rubber produced by using the waste tires has the defects of high energy consumption and heavy pollution, and can be widely applied to the field of waste tire recovery. The method specifically comprises the following steps that foreign matter checking is conducted on the waste tires, and pure waste tires are obtained; the method comprises the following steps: crushing pure waste tires, and then carrying out magnetic separation to obtain separated steel wires and rubber powder; cracking the rubber powder to obtain crude carbon black, fuel oil and non-condensable gas; the preparation method comprises the following steps: modifying crude carbon black to obtain modified crude carbon black; carrying out magnetic separation on the modified crude carbon black to obtain pure crude carbon black; grinding the pure coarse carbon black to obtain superfine carbon black powder with low ash content; and performing finished product processing on the superfine carbon black powder.

The utility model provides waste gas treatment equipment for waste tire recovery, and belongs to the technical field of waste tire recovery. Comprising a shell, and a recycling assembly and a filtering assembly which are mounted on the shell. Harmful gas is sucked into the shell through the fan, then filtered through the filter plate and discharged, after the filtering operation is completed, the button is pressed, the movable rod and the fixed rod are moved towards the position of the fixed pin through the button, the position of the annular groove coincides with the ball, the ball can roll into the annular groove, then the button is loosened, and then the movable rod and the fixed rod are moved to the position of the fixed pin. A button, a movable rod and a fixed rod are pushed to the position far away from a fixed frame through a spring, balls are moved to the position far away from fixed pins, after the filter plate is cleaned, the filter plate can be installed on the fixed frame by repeating the steps, waste gas can be filtered conveniently when the waste gas is generated through waste tire recovery, and the waste tire recovery efficiency is improved. And the influence on surrounding workers is reduced.

Device and method for filtering on wire length a wire stream The invention provides a device (200, 300) for filtering on wire length a wire stream (900) comprising wires recycled from tires. The device (200, 300) comprises at least one concave surface (220, 320) extending along a longitudinal direction (L). The device (200, 300) is arranged for receiving the wire stream (900) on the at least one concave surface (220, 320), and for transporting the wire stream (900) on the at least one concave surface (220, 320) along the longitudinal direction (L) from a first end (211, 311) to a second end (212, 312). The device (200, 300) comprises at least one filter opening (230, 330) in the at least one concave surface (320) or at the second end (212) of the at least one concave surface (220). The at least one filter opening (230, 330) has a predetermined size for filtering wires up to a predetermined length out of the wire stream (900) through the at least one filter opening (230, 330) when the wire stream (900) is transported on the at least one concave surface (220, 320).

The utility model relates to the technical field of tire recovery, in particular to an air leakage prevention structure for cracking, which comprises a main body, a discharge port is integrally formed at the bottom of the right end of the main body, a blanking pipeline is integrally formed at the top of the main body, and a storage box is integrally formed at the upper end of the blanking pipeline. According to the device, the movement of the sealing piston and the movement of the propelling piston are linked by driving components such as a hydraulic cylinder, so that the sealing piston and the propelling piston can be driven by using one driving piece; and moreover, the rubber particles can be pressed through the material pressing piston, the inclined feeding opening can be closed, and smoke generated by cracking of the cracking equipment is prevented from flowing back through the discharging opening and leaking through the inclined feeding opening.

The invention relates to the field of recycling devices, in particular to an environment-friendly rubber tire recycling device which comprises a machine body and a feeding hopper fixedly connected to the upper side of the machine body. A feed opening is formed below the machine body; a crushing assembly used for crushing tires is arranged on the inner side of the feeding hopper. The driving assembly is arranged on the upper side of the machine body; the driving assembly is connected with a screen drum for screening rubber blocks, and a plurality of screen holes which are annularly distributed at equal intervals are formed in the screen drum; the feeding hopper is located on the inner side of the screen drum; a plurality of baffle plates are fixedly connected to the inner side of the screen drum; each blocking plate is fixedly connected with a plurality of arc-shaped rods, and the blocking plates and the arc-shaped rods are used for blocking rubber blocks. According to the rubber crushing device, through the arrangement of the screen drum, the baffle plate and the arc-shaped rod, large rubber blocks which do not reach the grain size are repeatedly lifted and backfilled into the feeding hopper and enter the crushing roller again to be crushed for the second time or multiple times, and it is ensured that the rubber blocks are fully crushed into fine and uniform particles.

The invention relates to the field of waste tire recovery, in particular to a waste tire crusher which comprises a crusher shell, two crushing rollers are installed in the crusher shell, feeding ports are formed in the crushing rollers, a funnel cavity is formed above the feeding ports, the width of the funnel cavity is larger than the overall thickness of a conventional tire, and the crushing rollers are arranged in the funnel cavity. The crusher shell is provided with two symmetrically-arranged containing grooves, the containing grooves are located in the two sides of the feeding port, and baffles are slidably connected into the containing grooves. According to the device, the movable end of the electric telescopic rod moves towards one side, two baffles are pushed to be close to each other to close a feeding port, a long plate pushes a cutting blade to cut off the part, with a steel wire ring, of the side edge of a waste rubber tire, and meanwhile cut-off rubber with steel wires is recycled; rubber with steel wires is prevented from falling into the crushing device, so that crushed tire particles are more uniform, the steel wires are prevented from entering the crusher, and the service life of the crusher is prolonged.