29 results about "Eddy current separator" patented technology

The invention discloses an eddy current separator capable of preventing high-temperature demagnetization, relates to the technical field of eddy current separation, and aims to solve the problem of demagnetization of permanent magnets caused by high temperature conductivity in a magnetic roller. The eddy current separator comprises a rack, and a driving roller and an eccentric roller are mounted on the rack; the driving roller and the eccentric roller are jointly provided with a conveying belt; the eccentric roller comprises two bearing seats, the bearing seats are fixedly connected to the rack, a shell and a magnetic roller are jointly and rotationally connected to the two bearing seats, the magnetic roller is eccentrically arranged in the shell, a heat dissipation mechanism is further installed in the rack, a cooling cavity is formed in a bearing cavity of each bearing seat, and the cooling cavity is communicated with the shell. The two cooling cavities communicate with each other through a pipeline, and a liquid outlet and a liquid return opening of the heat dissipation mechanism communicate with the two cooling cavities correspondingly to form a cooling circulation loop.

The utility model relates to the field of sorting machine discloses an eccentric eddy current sorting machine, including base, the top fixedly connected with support plate A of base, the top fixedly connected with collecting box of base, the outer wall fixedly connected with baffle of support plate A, the top of support plate A is provided with transmission sorting mechanism, the top fixedly connected with the blanking box of support plate A, the outer wall fixedly connected with the blanking hopper of blanking box, the inside of blanking box is provided with screening guide mechanism. In the utility model, motor B drives transmission gear B to rotate, and then drives belt gear A, transmission rod, transmission gear A, makes screening cylinder rotate alone finally, realizes the preliminary screening to material, transmits small material to the center position of conveyer belt, strengthens small material and permanent magnet rotor's magnetic force contact, makes small material bounce higher, avoids the uneven condition of small material screening.

The utility model relates to the technical field of sorting machines, and discloses a vertical eddy current sorting machine which comprises a sorting machine shell, a heavy material sorting box is connected to the outer wall of the bottom of the sorting machine shell in a clamped mode, a sorting mechanism is arranged on the sorting machine shell, and light and heavy materials of different materials are quickly sorted through the sorting mechanism. The sorting mechanism is provided with an adjusting mechanism, the sorting mechanism is separated, assembled and maintained by arranging the adjusting mechanism, the sorting mechanism comprises a deflection wheel, the deflection wheel is fixedly connected to the output end of the sorting machine shell through a coupler, and the inner wall of the side face of the sorting machine shell is slidably connected with a slope frame. According to the utility model, the inclined wheel, the inclined plane frame and other structures are arranged, so that the problems that effective separation is difficult to realize and the separation efficiency is low under the condition that the diameters of materials are almost the same, and the separation is not thorough and effective separation cannot be realized due to the fact that a small amount of other materials are mixed into the same materials are solved.

A copper-aluminum separator, belonging to the technical field of copper-aluminum separation equipment, includes a housing. Inside the housing, an eddy current separator main body and a support plate are installed. The support plate is located above the left end of the eddy current separator main body, and a centrifugal throwing and dispersing device is fixedly installed on its upper surface. A conveyor box is fixedly installed on the upper surface of the housing. A discharge port is provided at the left end of the conveyor box, and the discharge port is connected to the housing. A double-helix differential speed feeding device is rotatably installed inside the conveyor box. A feed hopper is fixedly installed on the upper right surface of the conveyor box. This invention utilizes the differential speed operation and pitch difference design of the double helix to forcibly separate agglomerated materials and achieve layered and uniform feeding, avoiding accumulation. Furthermore, the centrifugal throwing and dispersing device allows pre-treated materials to fall into the housing through the discharge port, where they are further dispersed and evenly thrown onto the eddy current separator conveyor belt by centrifugal force, improving the separation effect and preventing material accumulation during the separation process.

To provide a waste treatment apparatus which recovers valuable metals from waste more efficiently than before.SOLUTION: An eddy-current separator that separates valuable metals from the first wastes, the eddy-current separator including a conveyer belt that conveys the first wastes, conveyer head pulleys and conveyer tail pulleys that rotate the conveyer belt, and a magnet drum that is disposed in the conveyer head pulleys and generates a magnetic field on a conveyance surface on the conveyer belt, a rotation speed of the rotatable magnet drum being less than a 3000rpm super 4000rpm, and the valuable metals including one or more selected from the group consisting of gold, silver, copper, palladium, and platinum.SELECTED DRAWING: Figure 1

The invention provides an environment-friendly municipal road and bridge engineering waste recycling device and a treatment method thereof, and belongs to the technical field of construction waste recycling, the environment-friendly municipal road and bridge engineering waste recycling device comprises a box body and a multi-heavy-metal removing assembly, the top of the box body communicates with a feeding shell, and hydraulic cylinders are fixedly connected to the two sides of the feeding shell correspondingly; and the output ends of the opposite sides of the two hydraulic cylinders penetrate through the feeding shell and are fixedly connected with crushing jaws. According to the multi-heavy-metal removing assembly, ferromagnetic metal in crushed materials is preliminarily separated through the magnetic separation mechanism, then non-ferrous metal is deeply separated through the eddy current separator, and the two separation modes achieve the synergistic effect; non-magnetic metal such as aluminum and copper mixed in fine particles and fine scrap iron attached to the surface of waste or embedded into the waste are effectively removed, the thoroughness of metal impurity separation is improved, the situation that the mechanical property and durability of recycled aggregate are affected due to the fact that the metal impurities are left in the recycled aggregate is avoided, and therefore the product grade and application safety of the recycled aggregate are guaranteed.

The invention relates to the technical field of eddy current sorting equipment, and discloses an eddy current sorting machine which comprises an intelligent speed setting system, and the intelligent speed setting system comprises a frequency converter used for controlling the power supply frequency of a magnetic roller rotating motor, a master controller used for controlling and adjusting the current set frequency of the frequency converter and a detection device used for detecting the sorting effect of the eddy current sorting machine. The detection device is used for conducting secondary detection on the sorting result, an adjusting signal is generated according to the secondary detection result and output to the master controller, and the master controller automatically adjusts the power supply frequency of the frequency converter according to the adjusting signal generated according to the secondary detection result. According to the technical scheme, the method aims at calculating the optimal sorting speed, and has the advantages that the rotating speed of the rotating shaft can be reduced as much as possible on the premise that the sorting effect is guaranteed, electric energy is saved, and the problem of shaft breakage caused by too high rotating speed can be avoided.

The invention relates to the technical field of sorting devices, in particular to a garbage sorting system based on magnetoelectric synergy and a control method.The garbage sorting system based on magnetoelectric synergy comprises a crusher, a vibrating feeder, a magnetic separator and an eddy current sorting machine, a discharging port of the crusher is in butt joint with a feeding area of the vibrating feeder, and the magnetic separator is fixedly connected to the bottom end of a discharging area of the vibrating feeder; an eddy current sorting machine is placed on the side, away from the vibrating feeder, of the magnetic separator, a sorting box assembly is placed between the magnetic separator and the eddy current sorting machine and comprises a box body unit, a bearing disc is arranged in the box body unit in a sliding mode, a temporary bearing tray is arranged in the box body unit in a sliding mode, and a receiving assembly is installed in the box body unit. The device can effectively intercept and collect mine garbage cooperatively separated by the magnetic separator and the eddy current separator, multiple types of minerals such as magnetic minerals, non-magnetic minerals, high-conductivity minerals, low-conductivity minerals and the like are covered, and the sorting range is widened.

The present invention relates to the technical field of sorting devices, and in particular to a garbage sorting system and control method based on magneto-electric collaboration, comprising a crusher, a vibrating feeder, a magnetic separator and an eddy current separator, the discharge port of the crusher being connected to the feeding area of ​​the vibrating feeder, the bottom end of the discharge area of ​​the vibrating feeder being fixedly connected to a magnetic separator, an eddy current separator being placed on the side of the magnetic separator away from the vibrating feeder, a sorting box assembly being placed between the magnetic separator and the eddy current separator, the sorting box assembly comprising a box unit, a receiving plate being slidingly arranged in the box unit, a temporary receiving drag tray being slidingly arranged in the box unit, and a receiving assembly being installed in the box unit. In the present invention, the device can effectively intercept and collect mine garbage sorted by the magnetic separator and the eddy current separator, covering multiple types of minerals such as magnetic and non-magnetic, highly conductive and low conductive minerals, and broadening the scope of sorting.

The invention relates to a tubular dynamic vortex separator magnetic transmission structure with a self-cooling function, a centrifugal blade grid rotates at a high speed along with a blade grid driving shaft, and due to the centrifugal effect of the centrifugal blade grid, an oil phase in the blade grid driving shaft is sucked out and discharged into an area between the tail end of the blade grid driving shaft and an isolation sleeve to form a high-pressure area; a high-pressure oil phase between the tail end of the cascade driving shaft and the spacer sleeve sequentially passes through a gap between the inner magnetic wheel and the spacer sleeve and a gap between the driving end sliding bearing and the cascade driving shaft under the action of fluid pressure difference, so that heat generated by transmission of the magnetic wheel and friction of the driving end sliding bearing is taken away; and the sliding bearing at the driving end is lubricated, and the oil is discharged from the oil discharge port. No additional structural component is introduced, the overall structural design is simple, and the cost is low.

A material recovery system for wet ash generated from municipal waste includes infeed storage of wet ash, an oversized and organic removal subsystem, a material sizing subsystem, a metal recovery subsystem, and an aggregate finishing subsystem. The system for material recovery results in the output of commercially usable aggregate material, ferrous materials, and non-ferrous materials. The subsystems of the material recovery system include one or more screens, dryers, feed hoppers, eddy current separators, magnets, crushers, and air classifiers.

The utility model belongs to the field of eddy current sorting technology, concretely relates to a kind of material distribution plate device for eddy current sorting machine, including magnetic cylinder, the side of the magnetic cylinder is provided with organism frame crossbeam, organism frame crossbeam is symmetrically equipped with shaft seat, the shaft seat between two is penetrated with shaft, the shaft is connected with the lever for pulling for pulling lever, the both ends of the shaft are equipped with the shaft plate of transmission torque, the other end of the shaft plate is connected with shaft pull rod;The combination structure of material distribution plate and connecting plate is adjusted with the horizontal direction spacing of magnetic cylinder by the cooperation of transmission mechanism, transmission mechanism is link design, simple structure, power transmission is direct, avoid complex transmission structure;The angle of angle plate is adjusted by angle pull rod, and then drive connecting plate on connecting plate shaft synchronous rotation angle adjustment, can quickly carry out material distribution plate feeding angle, solve the problem that material distribution plate position angle adjustment is inconvenient.

A material recovery system for wet ash generated from municipal waste includes infeed storage of wet ash, an oversized and organic removal subsystem, a material sizing subsystem, a metal recovery subsystem, and an aggregate finishing subsystem. The system for material recovery results in the output of commercially usable aggregate material, ferrous materials, and non-ferrous materials. The subsystems of the material recovery system include one or more screens, dryers, feed hoppers, eddy current separators, magnets, crushers, and air classifiers.

The invention provides a waste aluminum-containing cable pyrolysis recycling method, and relates to the technical field of solid waste recycling. Comprising the following steps: feeding crushed waste aluminum-containing cables into a continuous rotary pyrolyzing furnace, and introducing high-temperature water vapor for segmented temperature control pyrolysis to obtain a pyrolysis oil-gas mixture and aluminum-containing pyrolysis slag; the pyrolysis oil-gas mixture is condensed and separated into pyrolysis oil and pyrolysis gas, and the pyrolysis gas is recycled to a pyrolysis furnace combustion system after chlorine-containing gas is treated through a catalytic oxidation tower; after the pyrolysis residues are crushed, nonmetal impurities are removed through an eddy current sorting machine, aluminum particles and residual insulating carbon are separated through vibration screening, ferromagnetic substances are removed through a magnetic separator, and metal aluminum is obtained after alkali washing; the pyrolysis oil is subjected to catalytic reforming through a zeolite molecular sieve, light fuel oil and carbon residues are obtained, and the carbon residues are returned to the pyrolyzing furnace to serve as auxiliary fuel. According to the invention, high-efficiency removal (greater than or equal to 98%) of HCl is realized, energy recycling rate of pyrolysis oil gas is greater than or equal to 80%, aluminum recovery rate is greater than or equal to 95%, and purity is greater than or equal to 99 And the secondary aluminum smelting standard is reached.

The present invention discloses an eddy current separator for sorting waste refrigerator crushed materials, which belongs to the technical field of solid waste resource treatment, and comprises a transmission structure, wherein the transmission structure comprises a belt, a transmission roller and a magnetic roller, and the belt is arranged between the transmission roller and the magnetic roller. The eddy current separator for sorting waste refrigerator crushed materials also comprises a partition structure, a material receiving structure, a feeding structure and a material blocking structure; the partition structure comprises a plurality of partition members, which divide the transmission area into a plurality of partition channels; the material receiving structure comprises a plurality of transmission receiving troughs arranged in sequence from far to near at the discharge end of the transmission structure, and a first door seal receiving trough provided on one side of the transmission structure; the feeding structure has at least one driving end provided in the partition channel; the material blocking structure is provided between the transmission receiving trough and the discharge end of the transmission structure; the present invention can realize stable and efficient separation of components such as non-ferrous metals, magnetic metals, PVC door seals and other non-metallic components.

Eddy current separator equivalent circuit and eddy current separator, which relate to the field of separators. Aiming at the problem that there is no eddy current separator with the best separation effect from the circuit perspective in the prior art, the technical solution provided by the present invention is as follows: The eddy current separator equivalent circuit includes: resistor R<subgt;1< / subgt>, resistor R<subgt;2', resistor R<subgt;3', resistor R<subgt;m, impedance X<subgt;1σ, impedance X<subgt;2σ', impedance X<subgt;3σ', impedance X<subgt;m, voltage source E<subgt;1', voltage source E<subgt;2 and voltage source E<subgt;3; The two ends of the main circuit are used as the input terminals of the circuit. Resistor R<subgt;1, impedance X<subgt;1σ, resistor R<subgt;2', impedance X<subgt;2σ', resistor R<subgt;3', impedance X<subgt;3σ', voltage source E<subgt;1' and voltage source E<subgt;3 are connected in series on the main circuit; Branch one is connected in parallel with resistor R<subgt;1, impedance X<subgt;1σ and the input terminal. Resistor R<subgt;m and impedance X<subgt;m are connected in series on branch one; Branch two is connected in parallel with resistor R<subgt;3', impedance X<subgt;3σ', voltage source E<subgt;1' and voltage source E<subgt;3. Voltage source E<subgt;2 is arranged on the second main circuit; The output terminal of the parallel circuit of resistor R<subgt;3', impedance X<subgt;3σ' and voltage source E<subgt;1'. It is applicable to the separation work of non-ferrous metal blocks and provides a reference for the research and design of linear motors.

1. Name of the designed product: eddy current separator (W1500). 2. Use of the designed product: equipment for separating non-ferrous metals and non-metallic substances. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo best indicating the design points: perspective view 1.

The invention relates to the technical field of foamed plastic recovery treatment, in particular to foamed plastic recovery treatment equipment based on environmental protection and a treatment method thereof.The foamed plastic recovery treatment equipment comprises a rack and a crusher arranged on the rack and further comprises a metal separation mechanism arranged on the rack; the metal separation mechanism comprises a separation bin, a roller and a metal sleeve; a feeding hole and a discharging hole which are communicated with the interior of the collecting cavity are formed in the top and the bottom of the separating bin; an electromagnetic adsorption assembly is arranged in the roller, and the end, close to the discharging cavity, of the roller is connected with a degaussing section; a linear driver and a servo motor are arranged on the outer side of the separating bin, a penetrating hole allowing the metal sleeve to penetrate through is formed in the partition plate, and a discharging opening communicating with the interior of the discharging cavity is further formed in the bottom of the separating bin; and an eddy current sorting machine is arranged below the separation bin, so that ferromagnetic metal is efficiently and automatically collected under the condition that manual intervention is not needed, and then the foamed plastic recycling efficiency is improved.

This utility model relates to the field of sorting machine technology and discloses an eddy current separator, including a conveyor frame. A connecting box is fixedly connected to the left side of the conveyor frame. A vibration mechanism is provided on the side wall of the connecting box. A contact rod is fixedly connected to the surface of the rotating block. The outer arc surface of the contact rod contacts a sliding seat. Two sets of fixed blocks are slidably connected to the outer wall of the connecting block. A connecting frame is hinged to the end of the hinge rod away from the fixed block. A base plate is fixedly connected to both sides of the connecting frame. In this utility model, by setting up a vibration mechanism, the material inside the box can be kept in a loose state, avoiding the agglomeration of non-ferrous metal particles or non-metallic debris at the bottom of the box. It also disperses the material adhering to the box wall, reduces the electrostatic adsorption of broken plastic pieces on the inner wall of the box, and reduces the frequency of manual cleaning. This effectively solves the problems of material accumulation and adhesion, and improves collection efficiency and sorting accuracy.

The utility model belongs to the technical field of eddy current sorting machines, and particularly relates to an inner magnetic roller and a magnetic roller structure of an eddy current sorting machine. According to the inner magnetic roller disclosed by the utility model, the axial movement of the non-porous tile-shaped magnetic block is prevented through the two magnetic system check rings, and the non-porous tile-shaped magnetic block and the magnetic system check rings are fixed by the carbon fiber yarns, so that the non-porous tile-shaped magnetic block does not need to be perforated and is fixed on the magnetic conductive cylinder through a bolt; the inner magnetic roller with low magnetic energy loss, safety, reliability and high magnetic field intensity can be effectively formed. And through cooperative arrangement of the magnetic conduction cylinder, the driving half shaft and the fixed half shaft, the inner magnetic roller can rotate at a higher speed and rotate more stably. According to the magnetic roller structure, the inner magnetic roller, the inner magnetic roller support, the outer roller, the magnetic roller structure support and the magnetic declination angle adjusting mechanism are arranged in a matched mode, the declination angle of a magnetic system can be conveniently adjusted, the magnetic roller structure can adapt to separation operation of materials with different components, performance is greatly improved, and the recovery rate can be remarkably improved.

The application provides an aluminum metal extraction system of waste incineration slag, and relates to the field of waste incineration slag recycling. The aluminum metal extraction system of waste incineration slag comprises a first dehydration screen and a second dehydration screen. After the 32-75 mu m water-sand mixture is separated by the first dehydration screen, the remaining slag is transferred to the second dehydration screen. Then, the second dehydration screen divides the slag into 75-3 mm sand, 3-40 mm sand and sand larger than 40 mm. The aluminum metal extraction system of waste incineration slag can divide the slag with different diameters into different eddy current separators for processing. The drying and dispersing vibration equipment can dry the slag. The water-containing slag can be dispersed by using the scraping teeth and vibration. When the water content and particle diameter of the dispersed slag are high, the discharge plate vibrates and hits the scraping teeth, so that the slag can be better dispersed. The particle diameter is large, and the water content is low, so the scraping teeth can be directly used to disperse the slag. After the slag is dispersed and dried, the subsequent sorting equipment can more completely pick out the aluminum slag inside.

The utility model discloses a material distributing plate adjusting device of an eddy current sorting machine, which comprises a first conveying belt and a second conveying belt, the first conveying belt and the second conveying belt are adjacent and arranged in parallel, and the conveying directions of the first conveying belt and the second conveying belt are the same; a material distributing clamping frame is arranged above the first conveying belt, a transverse transferring device is arranged above the material distributing clamping frame, the sorting efficiency is improved, through the arrangement of the material distributing clamping frame and the transverse transferring device, rapid transferring of materials between the first conveying belt and the second conveying belt can be achieved, and therefore the working efficiency of the sorting machine is improved. Accurate sorting is achieved, movement of the material separating clamping frame is matched with accurate control of the transverse transferring device, accurate sorting of the materials can be achieved, and wrong sorting is reduced. Due to the fact that the first conveying belt and the second conveying belt are the same in width and provided with the striker plates, the materials can be effectively prevented from deviating in the conveying process.

The buffer device comprises a sorting machine body, a supporting frame is arranged on the left side of the sorting machine body, a conveying belt is fixedly connected to the upper portion of the supporting frame, a discharging groove is formed in the front face of the sorting machine body, a material guide plate is fixedly connected into the discharging groove, and a material outlet is formed in the lower portion of the sorting machine body. A guide groove is formed in the material guide plate, a buffer structure is arranged in the material guide plate, a reciprocating structure is connected outside the material guide plate, and the buffer structure comprises a concave plate, a rotating rod, a motor and a half gear. According to the eddy current sorting machine, the buffer structure and the guide groove are arranged, the fixed disc, the straight gear and the half gear are matched, the four buffer columns can achieve the clearance type rotating function, and the four buffer columns can conduct buffer treatment on materials in the discharging process; and the phenomenon that the materials are discharged from high-speed moving equipment to damage equipment or containers around the discharge chute is avoided, and the service life of components at the discharge position of the eddy current sorting machine is guaranteed.

A permanent magnet eddy current separator based on a Halbach array belongs to the technical field of permanent magnet eddy current separators. This invention addresses the resonance problem existing Halbach array permanent magnet eddy current separators suffer from. It includes: performing modal vibration analysis on the magnetic roller of the eddy current separator to calculate the natural frequency; measuring the frequency of the electromagnetic force wave to obtain the waveform amplitude and waveform frequency of each harmonic of the electromagnetic force wave; and determining the ratio range of the main magnetic pole angle to the equivalent magnetic pole number of the magnetic roller based on the waveform amplitude and waveform frequency of each harmonic of the electromagnetic force wave; the ratio range of the main magnetic pole angle to the equivalent magnetic angle of the magnetic roller is 0.4 to 0.6. This invention is suitable for use in permanent magnet eddy current separators.

A method for processing waste photovoltaic modules to separate constituent materials thereof, the method comprising the steps of subjecting the modules to a shredding process to produce a shredded material mix, classifying the shredded material mix in an eddy current separator to create at least two distinct, sorted output streams comprising a first output stream rich in non-conductive materials and a second output stream rich in mixed metallic materials, subjecting the first output stream to a first processing path comprising primarily sizing apparatus optimized for recovering brittle, non-conductive materials and subjecting the second output stream to a second, parallel processing path comprising milling and magnetic separation apparatus optimized for liberating and recovering metallic materials.

A material recovery system 2 for recycling mixed household-waste 4, comprising a processing facility 3 to sort the waste into recyclate glass 10, metal 12, plastic 14, and fibre 16 streams. The processing facility includes at least one of each of a shredder station 124, bag opening station 127, magnet station 139, optical sorter, wind-shifter station 136, ECS (eddy current separator) station 140, disc-screen station 142, disc-screen 2D / 3D separation station 90, glass-breaker station 94, V-screen 2D / 3D separation station 102, and NIR (near infrared) optical sorter station 60. A method of processing and recycling mixed household-waste is further disclosed. Fig. 1

The utility model discloses a composite drum paper tape filtering chip removal machine which is used for filtering cutting fluid, a primary filtering unit comprises a drum filter, and the cutting fluid enters a primary water tank after being filtered by the drum filter; the secondary filtering unit comprises a drum filter, the drum filter is communicated with a lifting pump, and the cutting fluid enters a secondary water tank after being filtered by the drum filter; the third-stage filtering unit comprises a vortex pump communicated with the first-stage water tank and the high-pressure water tank; according to the chip removal machine, the roller filter is adopted for primary filtration, iron chips with large sizes in cutting fluid are filtered and discharged from the chip removal opening through conveying of the chain belt, and the drum filter is matched for secondary filtration of the cutting fluid in the primary water tank, so that fine powder iron chips in the cutting fluid are removed; in addition, a vortex pump and a vortex separator are matched, centrifugal filtration is conducted on the cutting fluid, residual scrap iron in the cutting fluid is removed, small powder scraps accumulated in the water tank are reduced, and the cleaning frequency of the water tank is reduced.

Material treatment plant (1) for separating non-ferrous metals (6) from partly-treated slag (2, 3) of different particle size fractions with one single processing line including one single eddy current separator (4), which separator has an inlet (9) for untreated slag, an outlet (7) for a mineral slag fraction (8), and an outlet (5) for a separated non-ferrous metal fraction (6), wherein before the inlet (9) for untreated slag, two storage buffers (10, 11) are arranged in parallel with an outlet (12, 13) for untreated slag (2, 3) from the 2 parallel storage buffers with a common conveying line (14) from the two outlets (12,13) to the inlet (9) of the eddy current separator (4).

The invention relates to the technical field of garbage crushing, in particular to a municipal garbage treatment device which comprises a rack and a feeding part. A draining assembly; an eddy current separator; a first crushing part; an evaporation unit; the feeding end of the second crushing part is arranged at the lower part of the output end of the evaporation part; the non-metal household garbage collecting box is connected with the output end of the second crushing part; the light garbage sorting part comprises a high-speed airflow channel, and the high-speed airflow channel passes through the feeding end of the second crushing part; the third crushing part is arranged at the output end of the high-speed airflow channel; by means of the structural design, the purposes that garbage is classified and crushed, the service life of the crusher is prolonged, and meanwhile the garbage treatment efficiency is improved are achieved.