Integrated system for sorting and resource utilization of household garbage

Abstract

The household garbage sorting and resource utilization integrated system comprises a double-shaft crusher, a semi-magnetic roller is arranged in the center of the lower end of the double-shaft crusher, a slope conveying frame is arranged on the front side of the lower end of the semi-magnetic roller, and the front end of the slope conveying frame is connected with a low-temperature hot-pressing assembly; a microwave resonance drying assembly is arranged at the lower end of the low-temperature hot-pressing assembly, an eddy current sorting machine is arranged at the lower end of the microwave resonance drying assembly, and a high-temperature hot-pressing assembly is arranged on the lower side of the rear end of the eddy current sorting machine. And the utilization rate of resources is improved.

Description

Technical Field

[0001] The present invention relates to the field of domestic waste treatment, and particularly to an integrated system for sorting and resource utilization of domestic waste. Background Art

[0002] The fundamental goal of domestic waste treatment is to achieve reduction, harmlessness, and resource utilization, reduce environmental pollution through scientific methods, and promote resource recycling. The purpose of treatment is to reduce the amount of waste, making the "quality" (composition and characteristics) and "quantity" of the waste more suitable for subsequent final disposal requirements. Waste treatment follows the criteria of reduction, harmlessness, resource utilization, cost savings, land conservation, and resident satisfaction, and is carried out in accordance with local conditions, comprehensively treated, and gradually reduced. For example, in order to facilitate transportation and reduce costs, compression treatment is often carried out; in order to recover useful substances, crushing treatment and sorting treatment are often required. If incineration or landfill is used as the final disposal method, the waste also needs to be appropriately crushed, sorted, etc. first to make the disposal more effective.

[0003] The patent application number CN202510272303.7 is a Chinese invention patent, which discloses a miniaturized integrated domestic waste treatment system; including a flue gas pipeline, a feed hopper, an incinerator, multiple grate bars, an ash cleaning door, an electric push rod, a sealing plate, and a scraping assembly. The feed hopper is connected to the incinerator, and the flue gas pipe is connected to the incinerator. The scraping assembly includes a lifting module, a movable plate, a rotating motor, a rotating shaft, two sets of transverse movement modules, a receiving seat, and two scraping plates. The movable plate is connected to the lifting module, the rotating motor is arranged above the movable plate, one end of the rotating shaft is connected to the output end of the rotating motor, the receiving seat is connected to the other end of the rotating shaft, a transverse movement module is arranged in each limiting groove, and each scraping plate is respectively connected to the corresponding transverse movement module. Through the setting of the above structure, the inner wall of the incinerator can be scraped, achieving the effects of removing coking and removing adhered ash and slag on the wall, maintaining a constant reaction environment in the furnace, and reducing the phenomena of material movement obstruction and poor scraping effect caused by coking on the inner wall. However, this device has the following problems: First, this device cannot achieve high-precision stripping of metal impurities. Secondly, this device cannot deeply treat waste, which is not conducive to subsequent treatment and transportation. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies of the prior art. By setting up a process where the crushed domestic waste is initially subjected to magnetic separation and then low-temperature hot pressing to form a preliminary framework, then put into a microwave resonance cavity for microwave drying and eddy current secondary sorting of metal impurities, and then the waste is subjected to high-temperature hot pressing, the technical problems that this device cannot achieve high-precision stripping of metal impurities and cannot deeply treat waste, which is not conducive to subsequent treatment and transportation, are solved.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An integrated system for sorting and resource utilization of domestic waste, including a double-shaft crusher. A semi-magnetic roller is provided at the center of the lower end of the double-shaft crusher. A slope conveyor frame is provided at the front side of the lower end of the semi-magnetic roller. The front end of the slope conveyor frame is connected to a low-temperature hot pressing component. A microwave resonance drying component is provided at the lower end of the low-temperature hot pressing component. An eddy current separator is provided at the lower end of the microwave resonance drying component. A high-temperature hot pressing component is provided at the lower side of the rear end of the eddy current separator.

[0007] As a preference, a feed hopper is provided at the upper end of the double-shaft crusher. A crushing component is provided inside the double-shaft crusher. A discharge port is provided at the lower end of the double-shaft crusher. The semi-magnetic roller is located exactly in the middle of the discharge port.

[0008] As a preference, a rotating motor is provided on the left side of the semi-magnetic roller. A rotating shaft is provided at the center of the right side of the rotating motor. The rotating shaft horizontally penetrates the left and right sides of the semi-magnetic roller. A separation frame is provided at the lower side of the rear end of the semi-magnetic roller. The front side of the upper end of the separation frame is fixedly connected to the rear end of the slope conveyor frame.

[0009] As a preference, the low-temperature hot pressing component includes a steel frame. A material receiving port is provided at the center position of the upper side of the rear end of the steel frame. The material receiving port is connected to the front side of the slope conveyor frame. A skeleton outlet is provided at the lower end of the steel frame. The lower end of the skeleton outlet is fixedly connected to a first plug valve. Support frames are provided at the center positions of the left and right sides outside the steel frame. A first cylinder is provided at the center position of the support frames. A push rod is provided at the center of the lower end of the first cylinder. The lower end of the push rod is fixedly connected to a low-temperature hot pressing plate. Electric heating elements are embedded in the bottom side of the low-temperature hot pressing plate, and electric heating plates are provided on the four surrounding walls of the inner wall of the steel frame.

[0010] As a preference, the microwave resonance drying component includes a microwave resonance cavity. A metal reflection wall is provided on the inner wall of the microwave resonance cavity. A microwave generating device is provided at the center of the front end of the microwave resonance cavity. A magnetron is provided inside the microwave generating device. The magnetron is waveguide-connected to the microwave resonance cavity.

[0011] As a preference, a feed inlet is provided at the upper end of the microwave resonance cavity. The upper end of the feed inlet is fixedly connected to the lower side of the first plug valve. A discharge outlet is provided at the lower end of the microwave resonance cavity. The lower end of the discharge outlet is fixedly connected to a second plug valve.

[0012] As a preference, a sorting feed inlet is provided at the front side of the upper end of the eddy current separator. The sorting feed inlet is fixedly connected to the lower side of the second plug valve. A conveyor belt is provided inside the eddy current separator. A power roller is provided at the front side inside the conveyor belt. A permanent magnet roller is provided at the rear side inside the conveyor belt. A separation bin is provided at the rear end of the eddy current separator. A partition board is provided at the lower front side of the separation bin. A waste outlet is provided at the lower side of the rear end of the eddy current separator. The waste outlet is fixedly connected to a third plug valve.

[0013] As a preference, the high-temperature hot pressing assembly includes a high-temperature resistant steel frame. A waste inlet is provided at the upper end of the high-temperature resistant steel frame. The waste inlet is fixedly connected to the lower side of a No. 3 plug valve. High-temperature electric heaters are provided on the left and right sides and the lower side of the inner wall of the high-temperature resistant steel frame. A No. 2 cylinder is provided at the center of the front end of the high-temperature resistant steel frame. A telescopic rod is provided at the center of the rear end of the No. 2 cylinder. The rear end of the telescopic rod is fixedly connected to a high-temperature hot pressing plate. The high-temperature hot pressing plate is located on the front side of the inner wall of the high-temperature resistant steel frame. And a pneumatic split steel sealing door is provided at the rear end of the high-temperature resistant steel frame.

[0014] As another preference, the sizes of the skeleton outlet, the feed inlet, and the discharge outlet are the same. The beneficial effects of the present invention are as follows:

[0015] (1) In the present invention, the crushed garbage falls from the discharge port of the double-shaft crusher to the semi-magnetic roller. The semi-magnetic roller rotates driven by a rotating motor, and ferromagnetic substances in the garbage are separated by magnetic force and fall into the separation frame at the lower side of the rear end. The remaining garbage enters the subsequent low-temperature hot pressing treatment through the ramp conveying frame. The garbage enters the steel frame from the ramp conveying frame through the material receiving port. The No. 1 cylinder pushes the low-temperature hot pressing plate downward. Cooperating with the electric heater on the inner wall and the electric heating element in the low-temperature hot pressing plate, the garbage is hot-pressed in a low-temperature environment ((80 - 150 °C)). In the low-temperature environment, the organic matter is preliminarily decomposed, promoting the formation of a porous grid structure in the organic matter of the garbage. At the same time, a preliminary skeleton structure is formed in the garbage treatment, which can withstand the high-frequency vibration and thermal stress during the microwave drying process and prevent the material from splitting. At the same time, under the synergistic action of low temperature and high temperature of the garbage, harmful gas generation is reduced in the low-temperature stage, and residual pollutants are further decomposed in the high-temperature stage.

[0016] (2) In the present invention, the garbage after low-temperature hot pressing treatment enters the microwave resonance drying assembly. The microwaves generated by the microwave generating device are evenly distributed in the microwave resonance cavity formed by the metal reflection wall, quickly heating and further drying the garbage skeleton, making the garbage brittle and better separating non-ferrous metals in the subsequent process. Then it falls onto the eddy current separator. The power roller drives the conveyor belt to operate. The permanent magnet roller generates an alternating magnetic field to separate non-ferrous metals in the dried garbage and fall into the separation bin. The alternating electric field generated by the microwave resonance cavity and the dynamic magnetic field of the eddy current separation can form a composite energy field in the eddy current separation step. This field effect enhances the metal separation efficiency of metal particles and can also improve their own purity, facilitating subsequent resource utilization. Then the remaining waste is discharged from the waste outlet. Through multi-stage treatment, the device realizes high-precision stripping of metal impurities.

[0017] (3) In the present invention, the waste remaining after eddy current separation enters a high-temperature resistant steel frame through a No. 3 flap valve. The high-temperature electric heating plate and high-temperature hot pressing plate on the inner wall of the frame perform high-temperature hot pressing treatment (200 - 300 degrees) on the waste under the push of a No. 2 cylinder, further compressing and forming the waste. At the same time, under the action of high temperature, some organic substances will undergo pyrolysis reactions. After the treatment is completed, the formed product can be taken out through a pneumatic split steel seal door. At the same time, the low water content of the garbage base material after microwave drying makes the high-temperature hot pressing easier to process, improving the density and mechanical strength. The product is denser, producing high-density fuel blocks. At the same time, the air in the material gaps is eliminated in the low-temperature pre-pressing process, and pore-oriented compression is achieved through vitrification transformation at the high-temperature stage. Through multiple processes, the final discharge of waste is significantly reduced, and the high utilization of resources is improved.

[0018] In summary, the device has the advantages of achieving high-precision peeling of metal impurities in mixed garbage, ultimately reducing the discharge of final waste, and improving the high utilization of resources, and is particularly applicable to the technical field of domestic waste treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of the double-shaft crusher and semi-magnetic roller in the present invention.

[0022] Figure 3 It is a schematic diagram of the position of the low-temperature hot pressing component in the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the steel frame in the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the microwave resonance drying component in the present invention.

[0025] Figure 6 It is a schematic diagram of the structure of the eddy current separator and high-temperature hot pressing component in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the drawings.

[0027] Embodiment 1

[0028] AsFigures 1 to 6 As shown in the figure, the present invention provides an integrated system for sorting and resource utilization of domestic waste, including a double-shaft crusher 1. A semi-magnetic roller 2 is provided at the center of the lower end of the double-shaft crusher 1. A slope conveying frame 21 is provided on the front side of the lower end of the semi-magnetic roller 2. The slope conveying frame 21 adopts an inclined conveyor belt structure with baffles and is internally provided with anti-winding scrapers. Its inclination angle is about 30°-45°, which can reduce the sliding resistance of materials. The front end of the slope conveying frame 21 is connected to a low-temperature hot pressing assembly 3. A microwave resonance drying assembly 4 is provided at the lower end of the low-temperature hot pressing assembly 3. An eddy current separator 5 is provided at the lower end of the microwave resonance drying assembly 4. A high-temperature hot pressing assembly 6 is provided on the lower side of the rear end of the eddy current separator 5.

[0029] Furthermore, a feed hopper 11 is provided at the upper end of the double-shaft crusher 1. The function of the feed hopper 11 is to facilitate the input of domestic waste into the double-shaft crusher 1. The crushing assembly inside the double-shaft crusher 1 can crush large pieces of waste to make their sizes smaller, facilitating subsequent processing. A crushing assembly is provided inside the double-shaft crusher 1. The crushing assembly mainly consists of a knife shaft system (moving knife group and fixed knife group), a transmission mechanism (power system and main shaft structure), a frame and sealing assembly (frame assembly and bearing seal), and a control and safety system (PLC control and lubrication system). High-efficiency crushing of waste is achieved through the coordinated shearing of moving and fixed knives and the differential rotation of the double shafts. An outlet 12 is provided at the lower end of the double-shaft crusher 1. The outlet 12 is the channel for the discharged crushed waste. The semi-magnetic roller 2 is located exactly in the middle of the outlet 12.

[0030] Furthermore, a rotating motor 22 is provided on the left side of the semi-magnetic roller 2. A rotating shaft is provided at the center of the right side of the rotating motor 22. The rotating shaft horizontally penetrates the left and right sides of the semi-magnetic roller 2. A separation frame 23 is provided on the lower side of the rear end of the semi-magnetic roller 2. An electromagnetic locking device is provided at the bottom of the separation frame 23 to prevent material leakage. The front side of the upper end of the separation frame 23 is fixedly connected to the rear end of the slope conveying frame 21. The rotating motor 22 drives the rotating shaft to rotate the semi-magnetic roller 2, separating ferromagnetic substances (such as metals like iron and nickel) in the waste by magnetic force and allowing them to fall into the separation frame 23 on the lower side of the rear end. This can effectively remove ferromagnetic impurities in the waste, avoiding damage to subsequent equipment or affecting the treatment effect. The remaining waste enters the subsequent low-temperature hot pressing treatment through the slope conveying frame 21.

[0031] Furthermore, the low-temperature hot pressing assembly 3 includes a steel frame 31 which serves to support and fix the entire low-temperature hot pressing assembly 3. At the center position on the upper side of the rear end of the steel frame 31, there is a material receiving port 311 which is used to receive the garbage conveyed from the ramp conveying frame 21. The material receiving port 311 is connected to the front side of the ramp conveying frame 21. At the lower end of the steel frame 31, there is a skeleton outlet 36 which is a channel for discharging the preliminarily formed skeleton-structured garbage after low-temperature hot pressing treatment. The lower end of the skeleton outlet 36 is fixedly connected to a first plug valve 32. The first plug valve 32 is mainly composed of components such as a valve body, a valve plate, a cylinder, and a seal. The valve body is the main body of the channel for connecting up and down. The valve plate is driven by the cylinder to open and close. The seal ensures the airtightness when the valve is closed. Compressed air in the cylinder drives the piston of the cylinder to move, driving the valve plate to move linearly to open or cut off the material channel. The size of the valve plate matches that of the skeleton outlet 36 to achieve airtight sealing. The first plug valve 32 can control the discharge of the skeleton-structured garbage. At the center positions on the left and right sides of the outer side of the steel frame 31, there are support frames 33 which are used to support a first cylinder 34. The first cylinder 34 pushes the low-temperature hot pressing plate 342 downward through a push rod 341. At the center position of the support frame 33, there is a first cylinder 34. At the center of the lower end of the first cylinder 34, there is a push rod 341. The lower end of the push rod 341 is fixedly connected to the low-temperature hot pressing plate 342. The first cylinder 34 pushes the low-temperature hot pressing plate 342 downward through the push rod 341. Electric heating elements are embedded in the bottom side inside the low-temperature hot pressing plate 342, and electric heating plates 35 are provided on the four surrounding walls of the inner wall of the steel frame 31. The electric heating elements of the low-temperature hot pressing plate 342 and the electric heating plates 35 cooperate with a PID temperature control module to perform low-temperature hot pressing (80 - 150 degrees) on the garbage, causing the organic matter to be preliminarily decomposed, promoting the formation of a porous grid structure of the organic matter in the garbage, and at the same time, the garbage treatment forms a preliminary skeleton structure. This preliminary skeleton structure can withstand the high-frequency vibration and thermal stress during the subsequent microwave drying process, preventing the material from splitting. Moreover, performing hot pressing treatment at a low temperature can also reduce the generation of harmful gases.

[0032] Further, the microwave resonance drying component 4 includes a microwave resonance cavity 41, which is the main space for microwave drying. The inner wall of the microwave resonance cavity 41 is provided with a metal reflection wall 411. The interior of the cavity of the microwave resonance cavity 41 is designed as a multi-mode resonance structure. The frequency of the magnetron is adjusted in real time through a standing wave ratio detector to ensure uniform distribution of the microwave field. The center of the front end of the microwave resonance cavity 41 is provided with a microwave generating device 42. The metal reflection wall 411 can make the microwaves generated by the microwave generating device 42 evenly distributed in the cavity, so as to quickly heat and further dry the garbage skeleton through a certain period of time. The microwave generating device 42 is internally provided with a magnetron, which generates microwaves. The magnetron is waveguide-connected to the microwave resonance cavity 41. After microwave drying, the garbage becomes brittle, which is more conducive to separating non-ferrous metals in the subsequent process.

[0033] Further, a feed inlet 412 is provided at the upper end of the microwave resonance cavity 41, which is used to receive the garbage after low-temperature hot pressing discharged from the first plug valve 32. The upper end of the feed inlet 412 is fixedly connected to the lower side of the first plug valve 32. A discharge outlet 413 is provided at the lower end of the microwave resonance cavity 41, which is the channel for discharging the dried garbage. The lower end of the discharge outlet 413 is fixedly connected to a second plug valve 43. The second plug valve 43 has the same structure as the first plug valve 32. The valve body of the second plug valve 43 is perfectly adapted to the discharge outlet 413. After the microwave drying is completed, the drive of the second plug 43 is controlled by a PLC to slowly open the valve plate, so that the dried garbage gradually enters the eddy current separator 5, and will not enter the eddy current separator 5 all at once, which can ensure that the conveyor belt 52 will not bear too much garbage at once and can orderly transport and sort.

[0034] Furthermore, a sorting feed inlet 51 is provided at the front side of the upper end of the eddy current separator 5. The sorting feed inlet 51 is used to receive the garbage that has been microwave-dried and discharged from the second flap valve 43. The sorting feed inlet 51 is fixedly connected to the lower side of the second flap valve 43. A conveyor belt 52 is provided inside the eddy current separator 5. A power roller 521 is provided at the front side inside the conveyor belt 52, and a permanent magnet drum 522 is provided at the rear side inside the conveyor belt 52. The conveyor belt 52 operates driven by the power roller 521 to convey the garbage to the permanent magnet drum 522. A separation bin 53 is provided at the rear end of the eddy current separator 5. The permanent magnet drum 522 generates an alternating magnetic field. When the dried garbage passes through, the non-ferrous metals therein will generate induced current under the action of the alternating magnetic field, and thus will be separated under the action of the magnetic force and fall into the separation bin 53, realizing the high-precision stripping of metal impurities. The alternating electric field generated by the microwave resonator cavity 41 and the dynamic magnetic field of the eddy current separation enable the formation of a composite energy field in the eddy current separation step. This field effect enhances the metal separation efficiency of metal particles, improves their own purity, and facilitates subsequent resource utilization. A partition baffle 531 is provided at the lower side of the front end of the separation bin 53. The partition baffle 531 can separate the separated non-ferrous metals and the remaining waste materials. A waste outlet is provided at the rear end of the lower side of the eddy current separator 5. The waste outlet is a channel for discharging the remaining waste materials. The waste outlet is fixedly connected to a third flap valve 54. The structure of the third flap valve 52 is the same as that of the first flap valve 32 and the second flap valve 43. The third flap valve 52 opens the valve plate when the eddy current separator 5 is sorting, so that the waste materials can smoothly enter the high-pressure warm pressing assembly 6. When the sorting is over, the third flap valve 52 can be closed to seal the inside of the high-temperature hot pressing assembly 6.

[0035] Furthermore, the high-temperature hot pressing assembly 6 includes a high-temperature resistant steel frame 61, which is used to accommodate and fix each component of the high-temperature hot pressing assembly 6. The upper end of the high-temperature resistant steel frame 61 is provided with a waste inlet, which is used to receive the waste remaining after eddy current separation discharged from the third gate valve 54. The waste inlet is fixedly connected to the lower side of the third gate valve 54. High-temperature electric heating plates are provided on the left and right sides and the lower side of the inner wall of the high-temperature resistant steel frame 61. The center of the front end of the high-temperature resistant steel frame 61 is provided with a second cylinder 62. The center of the rear end of the second cylinder 62 is provided with a telescopic rod, and the rear end of the telescopic rod is fixedly connected to a high-temperature hot pressing plate 63. The high-temperature hot pressing plate 63 is located on the front side of the inner wall of the high-temperature resistant steel frame 61. The high-temperature hot pressing plate 63 cooperates with the PID temperature control module to perform high-temperature hot pressing treatment (200-300 degrees) on the waste under the push of the second cylinder 62. Under the action of high temperature, part of the organic matter will undergo pyrolysis reaction, and at the same time, the waste is further compressed and formed. The rear end of the high-temperature resistant steel frame 61 is provided with a pneumatic split steel seal door 64. The pneumatic split steel seal door 64 is mainly composed of a door body frame, a pneumatic drive system, a sealing component and a control system. The pneumatic drive system pushes the door panel to open. A graphite seal ring is integrated inside the door body and is driven by a double-acting cylinder. The switching pressure is ≥0.6 MPa to ensure airtightness in a high-temperature environment. The pneumatic split steel seal door 64 facilitates the removal of the formed product after the treatment. The low water content of the garbage base material after microwave drying makes high-temperature hot pressing easier to process, improves the density and mechanical strength, the product is more compact, and high-density fuel blocks are produced. At the same time, the air in the material gap is eliminated in the low-temperature pre-pressing process, and the pore orientation compression is realized through the glass transition in the high-temperature stage. Through multiple processes, the final discharge of waste is greatly reduced, and the high utilization of resources is improved.

[0036] Furthermore, the sizes of the skeleton outlet 36, the feed inlet 412, and the discharge outlet 413 are the same. Such a design can ensure the smooth transmission of garbage between components, avoid problems such as blockage caused by size mismatch, and ensure the stable operation of the entire integrated system.

[0037] Working process: First, the non-water-mixed garbage is put into the feeding hopper 11 and enters the double-shaft crusher 1 for crushing by the crushing assembly. Then, the crushed garbage falls onto the semi-magnetic roller 2 through the discharge port 12. The semi-magnetic roller 2 rotates driven by the rotating motor 22, and uses magnetic force to separate the ferromagnetic substances in the garbage, which fall into the separation frame 23 at the lower side of the rear end. The remaining garbage enters the subsequent low-temperature hot pressing treatment through the ramp conveying frame 21. The garbage enters the steel frame 31 through the material receiving port 311 from the ramp conveying frame 21. The first cylinder 34 pushes the low-temperature hot pressing plate 342 downward. Cooperating with the electric heating plate 35 on the inner wall and the electric heating element in the low-temperature hot pressing plate 342, the garbage undergoes low-temperature hot pressing treatment in a low-temperature environment. In the low-temperature environment (80 - 150 °C), the organic matter is preliminarily decomposed, promoting the formation of a porous grid structure in the organic matter of the garbage. At the same time, the garbage treatment forms a preliminary skeleton structure, which can withstand the high-frequency vibration and thermal stress during the microwave drying process and prevent the material from splitting. At the same time, under the synergistic effect of low temperature and high temperature of the garbage, the generation of harmful gases is reduced in the low-temperature stage. Then, the garbage after low-temperature hot pressing treatment enters the microwave resonance drying assembly 4. The microwave generated by the microwave generating device 42 is evenly distributed in the microwave resonance cavity 41 formed by the metal reflection wall 411, quickly heating and further drying the garbage skeleton, making the garbage brittle and better separating non-ferrous metals in the subsequent processes. Then it falls into the eddy current separator 5. The power roller 521 drives the conveyor belt 52 to operate. The permanent magnet roller 522 generates an alternating magnetic field to separate the non-ferrous metals in the dried garbage, which fall into the separation bin 53. The alternating electric field generated by the microwave resonance cavity 41 and the dynamic magnetic field during eddy current separation can form a composite energy field in the eddy current separation step. This field effect enhances the metal separation efficiency of metal particles and improves their own purity, facilitating subsequent resource utilization. Then the remaining waste is discharged from the waste outlet. Through multi-stage treatment, the device realizes high-precision stripping of metal impurities.

[0038] Secondly, the waste remaining after eddy current separation enters the high-temperature-resistant steel frame 61 through the third plug valve 54. The high-temperature electric heating plate and the high-temperature hot pressing plate 63 on the inner wall of the frame perform high-temperature hot pressing treatment on the waste at 200 - 300 degrees under the push of the second cylinder 62, further compressing and forming the waste. At the same time, under the action of high temperature, part of the organic matter will undergo pyrolysis reaction. After the treatment is completed, the formed product can be taken out through the pneumatic split steel seal door 64. At the same time, the low water content of the garbage base material after microwave drying makes the high-temperature hot pressing easier to process, improving the density and mechanical strength. The product is more compact, generating high-density fuel blocks. At the same time, the air in the material gap is eliminated in the low-temperature pre-pressing process, and the pore orientation compression is realized through the glass transition in the high-temperature stage. Through multi-stage processes, the final discharge of waste is greatly reduced, and the high utilization of resources is improved.

[0039] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the rollers or components referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the invention.

[0040] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0041] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art based on the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An integrated system for sorting and resource utilization of domestic waste, characterized in that: It includes a double-shaft crusher (1). A semi-magnetic roller (2) is provided at the center of the lower end of the double-shaft crusher (1). A slope conveying frame (21) is provided at the front side of the lower end of the semi-magnetic roller (2). The front end of the slope conveying frame (21) is connected to a low-temperature hot pressing assembly (3). A microwave resonance drying assembly (4) is provided at the lower end of the low-temperature hot pressing assembly (3). An eddy current separator (5) is provided at the lower end of the microwave resonance drying assembly (4). A high-temperature hot pressing assembly (6) is provided at the lower side of the rear end of the eddy current separator (5).

2. The integrated system for sorting and resource utilization of domestic waste according to claim 1, wherein A feed hopper (11) is provided at the upper end of the double-shaft crusher (1). A crushing assembly is provided inside the double-shaft crusher (1). A discharge port (12) is provided at the lower end of the double-shaft crusher (1). The semi-magnetic roller (2) is located exactly in the middle of the discharge port (12).

3. An integrated system for sorting and resource utilization of domestic waste according to claim 1, characterized in that, A rotating motor (22) is provided on the left side of the semi-magnetic roller (2). A rotating shaft is provided at the center of the right side of the rotating motor (22). The rotating shaft horizontally penetrates the left and right sides of the semi-magnetic roller (2). A separation frame (23) is provided at the lower side of the rear end of the semi-magnetic roller (2). The front side of the upper end of the separation frame (23) is fixedly connected to the rear end of the slope conveying frame (21).

4. An integrated system for domestic waste sorting and resource utilization according to claim 1, characterized in that, The low-temperature hot pressing assembly (3) includes a steel frame (31). A material receiving port (311) is provided at the center position of the upper side of the rear end of the steel frame (31). The material receiving port (311) is connected to the front side of the slope conveying frame (21). A skeleton outlet (36) is provided at the lower end of the steel frame (31). A first plug valve (32) is fixedly connected to the lower end of the skeleton outlet (36). Support frames (33) are provided at the center positions of the left and right sides outside the steel frame (31). A first cylinder (34) is provided at the center position of the support frames (33). A push rod (341) is provided at the center of the lower end of the first cylinder (34). A low-temperature hot pressing plate (342) is fixedly connected to the lower end of the push rod (341). Electric heating elements are embedded in the bottom side of the low-temperature hot pressing plate (342), and electric heating plates (35) are provided around the inner wall of the steel frame (31).

5. An integrated system for domestic waste sorting and resource utilization according to claim 1, characterized in that, The microwave resonance drying assembly (4) includes a microwave resonance cavity (41). A metal reflection wall (411) is provided on the inner wall of the microwave resonance cavity (41). A microwave generating device (42) is provided at the center of the front end of the microwave resonance cavity (41). A magnetron is provided inside the microwave generating device (42). The magnetron is waveguide-connected to the microwave resonance cavity (41).

6. The integrated system for sorting and resource utilization of domestic waste according to claim 5, characterized in that, A feed inlet (412) is provided at the upper end of the microwave resonance cavity (41). The upper end of the feed inlet (412) is fixedly connected to the lower side of the first plug valve (32). A discharge outlet (413) is provided at the lower end of the microwave resonance cavity (41). A second plug valve (43) is fixedly connected to the lower end of the discharge outlet (413).

7. An integrated system for sorting and resource utilization of domestic waste according to claim 1, characterized in that, The front side of the upper end of the eddy current separator (5) is provided with a sorting feed inlet (51), and the sorting feed inlet (51) is fixedly connected to the lower side of the second gate valve (43). Inside the eddy current separator (5), there is a conveyor belt (52). Inside the front side of the conveyor belt (52), there is a power roller (521), and inside the rear side of the conveyor belt (52), there is a permanent magnet roller (522). The rear end of the eddy current separator (5) is provided with a separation chamber (53). The lower side of the front end of the separation chamber (53) is provided with a partition plate (531). The lower side of the rear end of the eddy current separator (4) is provided with a waste outlet, and the waste outlet is fixedly connected to the third gate valve (54).

8. An integrated system for sorting and resource utilization of domestic waste according to claim 1, characterized in that, The high-temperature hot pressing assembly (6) includes a high-temperature resistant steel frame (61). The upper end of the high-temperature resistant steel frame (61) is provided with a waste inlet, and the waste inlet is fixedly connected to the lower side of the third gate valve (54). High-temperature electric heating plates are provided on the left and right sides and the lower side of the inner wall of the high-temperature resistant steel frame (61). In the center of the front end of the high-temperature resistant steel frame (61), there is a second cylinder (62). In the center of the rear end of the second cylinder (62), there is a telescopic rod, and the rear end of the telescopic rod is fixedly connected to a high-temperature hot pressing plate (63). The high-temperature hot pressing plate (63) is located on the front side of the inner wall of the high-temperature resistant steel frame (61), and an air-operated split steel sealing door (64) is provided at the rear end of the high-temperature resistant steel frame (61).

9. An integrated system for sorting and resource utilization of domestic waste according to claim 6, characterized in that, The sizes of the skeleton outlet (36), the feed inlet (412), and the discharge outlet (413) are the same.

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