A high-temperature aerobic composting system for kitchen waste

Abstract

The present invention discloses a high-temperature aerobic composting system for kitchen waste, which includes a garbage crushing component, an oil and salt removal component, an iron removal component and a composting system. The present invention realizes the full pretreatment of kitchen waste. The treated garbage is completely crushed, which is beneficial to the subsequent aerobic composting process, greatly shortens the composting time, significantly improves the effect, and realizes the resource utilization of kitchen waste.

Description

Technical Field

[0001] The present invention relates to the technical field of garbage treatment equipment, and particularly relates to a high-temperature aerobic composting system for kitchen waste. Background Art

[0002] Kitchen waste refers to perishable organic garbage such as fruits and vegetables, food scraps, leftovers, and melon rinds discarded in daily household life, as well as other waste such as metals and glass. Kitchen waste is characterized by high organic matter content, high moisture content, and high oil and salt content, and needs to be properly treated.

[0003] The output of kitchen waste is gradually increasing, imposing a heavy burden on the environment's self-repair ability. How to effectively treat kitchen waste and green and sustainable waste treatment have become one of the current environmental protection problems.

[0004] In addition to being "harmful", kitchen waste also has the characteristic of being "resourceful". Proper treatment will produce good environmental and economic benefits; therefore, suitable green and sustainable kitchen waste treatment methods have become the current difficulties and hot issues.

[0005] The resource utilization methods of kitchen waste mainly include anaerobic digestion, aerobic composting, biological feed, insect breeding, heat treatment technology, and biorefining to produce high-value-added chemicals, etc. Each technology has its own advantages and disadvantages. The improvement and update of existing technologies will be the main line of future kitchen waste treatment; many experts and scholars are also committed to reducing the new environmental pollution risks brought by kitchen waste treatment technologies.

[0006] The feed treatment technology has the advantages of high mechanization degree, high resource utilization degree, and small floor area, but it cannot avoid the problem of protein homology. The composting treatment technology has a simple composting technology; however, it is easy to produce unpleasant odors, affecting the surrounding environment and causing soil salinization. The aerobic biological treatment technology has the advantages of short treatment time and high automation degree; but the investment cost is high, and the processing capacity of a single device is limited. The anaerobic fermentation treatment technology can achieve harmlessness and resource utilization, maximizing the recovery of oil in kitchen waste, purifying or processing it into industrial raw materials, and at the same time preventing waste oil from returning to the table; however, this technology has a large investment, relatively complex processes, a long investment recovery period, and high requirements for the stability of equipment operation during its industrial utilization process. The degree of garbage crushing and sufficiency directly affects the treatment effect, but the current equipment has poor crushing and cleaning effects in the pretreatment of garbage, restricting the subsequent fermentation treatment process. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides a high-temperature aerobic composting system for kitchen waste, including a garbage crushing component, an oil and salt removal component, an iron removal component, and a composting system;

[0008] The garbage crushing component includes a group of crushing drum wheels. There are two crushing drum wheels that are close to each other. The crushing drum wheels are used to squeeze out the moisture in the kitchen waste. The rotating shafts of the crushing drum wheels are connected to a first motor through a gearbox, and the two crushing drum wheels are driven by the first motor to rotate for extrusion. A chopping box is provided directly below the crushing drum wheels. There are at least two groups of rotating knives in the chopping box. The rotating knives include a rotating rod and a blade. The rotating rod is connected to a second motor, and the rotating rod is driven by the second motor to rotate. The blade is provided on the rotating rod. During the rotation of the rotating rod, the blade drives to cut and crush the garbage. The upper and lower ends of the chopping box are both open. Upper covers and lower covers are respectively provided at the openings at the upper and lower ends of the chopping box. The upper covers and lower covers are respectively connected to hydraulic cylinders, and the upper cover or the lower cover is driven by the hydraulic cylinders to move to open or close the upper or lower opening. A hot air nozzle is also provided in the chopping box, and the hot air nozzle is externally connected to a hot air blower. The garbage crushing component further includes a shredded material rework sub-component. The shredded material rework sub-component includes two parallel rotating rings. A garbage tray is provided between the two rotating rings. The garbage tray is hinged on the two rotating rings. A ratchet is provided at the hinge between the garbage tray and the rotating rings. A waist-shaped through-hole groove is processed on the garbage tray, and the waist-shaped through-hole groove extends obliquely upward. A clamping rod is provided in the waist-shaped through-hole groove, and a gravity hammer is suspended from the clamping rod. The clamping rod is mounted on the ratchet. An annular rod is also provided on the rotating ring. An annular through-hole matching the annular rod is processed on the garbage tray. During the rotation of the garbage tray, the annular rod can extend into the annular through-hole. One end of the annular rod is hinged with a fixed clamping block, and the other end is provided with a rubber cushion block. A heavy object block is also fixed at the bottom of the garbage tray so that the center of gravity of the entire garbage tray is located below the rotating ring. An electric screen is provided at the bottom of the garbage tray. The garbage tray can be driven by the rotating ring to rotate to directly below the chopping box. The axis of the rotating ring is connected to a servo motor, and the rotating ring is driven by the servo motor to rotate. The servo motor is connected to a controller. A concave conveyor belt is provided directly below the shredded material rework sub-component. The concave conveyor belt includes conveyor wheels and a conveyor belt on both sides. The outer sides of the conveyor wheels on both sides are warped into inclined surfaces. The two sides of the conveyor belt are transmission areas, and the middle part is a water-permeable area. The transmission areas are tensioned on the conveyor wheels to drive the conveyor belt forward. The water-permeable area is made of a filter cloth. The conveyor wheels are connected to a third motor, and the conveyor belt is driven by the third motor. An oil and salt removal component is also provided between the two conveyor wheels.

[0009] The degreasing and desalting assembly includes a cleaning and degreasing pipe, a waste liquid tank, a liquid pump, and a hot air blower. The cleaning and degreasing pipe is located directly above the concave conveyor belt. The inner cavity of the cleaning and degreasing pipe is divided into a front end cavity and a rear end cavity. The rear end cavity is divided into upper and lower chambers. The lower chamber is connected to the liquid pump through a pipe, and the liquid pump is connected to the waste liquid tank, which is located directly below the concave conveyor belt. The upper chamber is connected to the hot air blower through a pipe. Nozzles are provided on the lower surface of the cleaning and degreasing pipe. The front end cavity is communicated with the upper chamber. The part of the concave conveyor belt extending out of the waste liquid tank forms a iron removal part, and the iron removal assembly is provided directly above the iron removal part.

[0010] The iron removal assembly includes an electromagnet and a transmission component. The transmission component includes a pulley and a belt. The pulley is connected to a fourth motor, and the pulley is driven by the fourth motor to rotate. The front end of the transmission component overlaps with the concave conveyor belt in the vertical direction, and the electromagnet is provided directly above the front end of the transmission component. The electromagnet is connected to the controller, and the power supply of the electromagnet is controlled by the controller. A iron material collection box is provided directly below the rear end of the transmission component.

[0011] The composting system is provided directly below the end of the concave conveyor belt for further composting treatment of the processed garbage.

[0012] The first motor, the second motor, the hydraulic cylinder, the electric screen, the servo motor, the third motor, the fourth motor, the hot air blower, the liquid pump, and the hot air blower are all connected to the controller through wires.

[0013] Further, there are four garbage trays, and the garbage trays are arranged equidistantly in a circular array along the central axis of the rotating ring.

[0014] Further, a ramp groove is provided above the crushing wheel drum for concentrating the garbage and guiding it between the two crushing wheel drums for crushing.

[0015] The present invention also discloses a method for pre-composting treatment of garbage by the above-mentioned kitchen waste high-temperature aerobic composting system. The steps include:

[0016] (1) Garbage crushing: Turn on the system power supply, turn on the controller control system to start working, the controller outputs instructions to the first motor, the third motor, the fourth motor, the hot blower, the liquid pump, the electromagnet and the hydraulic cylinder, controls the first motor and the third motor to rotate, drives the crushing drum to rotate, and supplies power to the electromagnet to generate magnetism; at the same time, controls the hydraulic cylinder to open the upper cover plate, and the lower cover plate is in a closed state; pours the kitchen waste into the slope trough, and when the waste enters between the two crushing drums, the hard waste is crushed, and at the same time, the waste with moisture is squeezed and dehydrated; the crushed waste falls into the shredder box, and then manually controls the hydraulic cylinder through the controller to close the upper cover plate, turns on the second motor to start rotating, so that the drum The knife starts to rotate to cut and crush the garbage in the shredder box. During the cutting process, the hot air blower can be controlled to start by the controller to dry and dehydrate the garbage during the cutting process. After the cutting is completed, the controller manually outputs instructions to the hydraulic cylinder, and at the same time turns on the electric screen, the upper cover plate and the lower cover plate, so that the garbage debris in the shredder box falls into the garbage tray. After being screened by the electric screen on the garbage tray, the well-cut garbage debris with smaller particle size falls onto the concave conveyor belt, and the garbage with larger particle size due to insufficient cutting stays in the garbage tray. After the screening is completed, the servo motor is controlled by the controller to rotate a certain angle, so that the rear garbage tray rotates to the bottom of the shredder box, and the garbage with residual large particles is removed. The tray is rotated out upward; in the process of the garbage tray with residual large particles of garbage being rotated out upward, due to the effect of the weight block, the garbage tray always rotates around the hinge, so that the garbage tray always keeps balance when rotating out, and the garbage in the garbage tray is prevented from pouring out; and the ratchet prevents the garbage tray from shaking violently during the rotation process; on the other hand, when the garbage tray is located directly below the shredder box, the fixed card block hinged at the end of the annular rod naturally droops due to the effect of gravity, so that the fixed card block and the annular rod are flush, and the annular rod can be retracted into the annular through hole; therefore, in the process of the garbage tray being rotated out, the garbage tray rotates relative to the hinged position with the rotating ring, so that the annular rod is retracted into the annular through hole; when the rear garbage tray rotates to the directly below the shredder box, the garbage tray with residual large particles of garbage is retracted. The garbage tray for the granular garbage is located exactly on the leftmost side of the rotating ring, the servo motor stops rotating and transmits a signal to the controller, the controller controls the hydraulic cylinder to open the upper cover plate, while the lower cover plate is in a closed state, and the next batch of garbage is crushed; at this time, the rubber pad at the other end of the annular rod abuts against the bottom of the garbage tray, so that the garbage tray gradually tilts as the rotating ring continues to rotate upward; when the garbage tray is located on the leftmost side of the rotating ring, the operator can add new garbage to be processed into the garbage tray; when the garbage tray gradually rotates to the top of the slope groove, the inclination of the garbage tray is large, and the garbage in the garbage tray falls into the slope groove due to gravity, and the new garbage and the garbage that was not completely crushed in the previous batch are poured into the next batch of garbage processing;When the garbage tray rotates to a position slightly to the right of the highest point of the rotating ring, at this time, due to the gravitational force, the gravity hammer pulls down the clamping rod, causing the clamping rod to disengage from the ratchet wheel. The garbage tray can rotate clockwise around the hinge point normally. At this time, due to the action of the heavy object block, the garbage tray gradually rotates clockwise. When the clamping rod moves to the outermost side wall of the ratchet wheel and cannot move further, the garbage tray stops rotating, and the garbage tray is in a horizontal state. During the rotation of the garbage tray, the annular rod gradually extends out of the annular through-hole. When the garbage tray stops rotating, the end of the annular rod disengages from the annular through-hole, and the fixed clamping block rotates and gets stuck outside the annular through-hole due to the gravitational force, preventing the annular rod from retracting into the annular through-hole. When the garbage tray rotates back under the chopping box again, the fixed clamping block droops naturally due to the gravitational force, making the fixed clamping block flush with the annular rod, and the annular rod can retract into the annular through-hole again to receive materials for the next time.

[0017] (2) Garbage degreasing and desalting: The garbage debris screened by the electric screen drops into the concave conveyor belt. The concave conveyor belt slowly transports forward, driving the garbage debris to slowly transport forward. At the same time, the liquid pump pumps the ethanol solution in the waste liquid tank into the cleaning and degreasing pipe, and then sprays it out from the nozzle of the cleaning and degreasing pipe onto the middle water-permeable area of the concave conveyor belt to perform degreasing and desalting treatment on the garbage on the concave conveyor belt. The cleaned ethanol solution penetrates through the middle water-permeable area and then falls back into the waste liquid tank. After the garbage debris is transported to leave the front cavity section of the cleaning and degreasing pipe and enter the rear cavity section, the hot air sprayed out from the rear cavity section dries the degreased garbage.

[0018] (3) Iron removal: When the dried garbage debris enters the front electromagnet part of the transmission component, the ferromagnetic substances are attracted by the electromagnet and adhere to the belt. During the forward transmission of the belt, the ferromagnetic substances gradually disengage from the electromagnet area and finally fall into the iron material collection box, completing the separation of ferromagnetic substances in the garbage.

[0019] (4) Composting fermentation: The non-ferromagnetic garbage is finally dropped into the composting system for composting fermentation during the transmission of the concave conveyor belt.

[0020] The beneficial effects of the present invention are as follows: The present invention realizes the full pretreatment of kitchen waste. The treated garbage is completely pulverized, which is beneficial to the subsequent aerobic composting process, greatly shortening the composting time and significantly improving the effect, and realizing the resource utilization of kitchen waste. Description of the Drawings

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a cross-sectional structural schematic diagram of the concave conveyor belt of the present invention;

[0023] Figure 3Structural schematic diagram of the hinge joint between the garbage tray and the rotating ring described in the present invention (excluding the heavy object block);

[0024] Figure 4 Structural schematic diagram of the end of the annular rod. Specific implementation manner

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Embodiment 1

[0027] A high-temperature aerobic composting system for kitchen waste, comprising a garbage crushing component, an oil and salt removal component, an iron removal component and a composting system. The garbage crushing component includes a set of crushing drum wheels 1, and there are two crushing drum wheels 1 that are close to each other. The crushing drum wheels 1 are used to squeeze out the moisture in the kitchen waste. The rotating shafts of the crushing drum wheels 1 are connected to a first motor through a gearbox, and the two crushing drum wheels 1 are driven by the first motor to rotate to achieve extrusion. Above the crushing drum wheels 1, there is a ramp groove 2 for concentrating and guiding the garbage between the two crushing drum wheels for crushing. Right below the crushing drum wheels 1, there is a shredding box 3. Inside the shredding box 3, there are two sets of rotating knives. The rotating knives include a rotating rod 4 and a blade 5. The rotating rod 4 is connected to a second motor, and the rotating rod is driven by the second motor to rotate. There are blades 5 on the rotating rod. During the rotation of the rotating rod, the blades drive the garbage to be cut and broken. Both the upper end and the lower end of the shredding box 3 are open, and an upper cover plate 6 and a lower cover plate 7 are respectively provided at the openings of the upper end and the lower end of the shredding box. The upper cover plate 6 and the lower cover plate 7 are respectively connected to hydraulic cylinders, and the upper cover plate 6 or the lower cover plate 7 is driven by the hydraulic cylinders to move to realize the opening or closing of the upper end or the lower end opening. Inside the shredding box 3, there is also a hot air nozzle 8, and the hot air nozzle 8 is externally connected to a hot air blower. The garbage crushing component also includes a shredded material rework sub-component. The shredded material rework sub-component includes two parallel rotating rings 9. Between the two rotating rings 9, there is a garbage tray 10. The garbage tray 10 is hinged and mounted on the two rotating rings 9. There are four garbage trays 10, and each garbage tray 10 is arranged in an equidistant annular array along the central axis of the rotating ring 9. At the hinge between the garbage tray 10 and the rotating ring 9, there is a ratchet 11. A waist-shaped through-hole groove 12 is processed on the garbage tray 10, and the waist-shaped through-hole groove 12 extends obliquely upward. A clamping rod 13 is provided in the waist-shaped through-hole groove 12, and a gravity hammer 14 is suspended from the clamping rod 13. The clamping rod 13 is mounted on the ratchet 11. There is also an annular rod 16 on the rotating ring 9. An annular through-hole 17 matching the annular rod 16 is processed on the garbage tray 10. During the rotation of the garbage tray 10, the annular rod 16 can extend into the annular through-hole 17; one end of the annular rod 16 is hinged with a fixed clamping block 18, and the other end is provided with a rubber cushion block 19. A heavy object block 20 is also fixed at the bottom of the garbage tray 10 so that the center of gravity of the entire garbage tray 10 is located below the rotating ring 9. An electric screen 21 is provided at the bottom of the garbage tray 10. The garbage tray 10 can be driven by the rotating ring 9 to rotate to directly below the shredding box 3. The axis of the rotating ring 9 is connected to a servo motor, and the rotating ring 9 is driven by the servo motor to rotate. The servo motor is connected to a controller. Right below the shredded material rework sub-component, there is a concave conveyor belt 22. The concave conveyor belt 22 includes conveyor wheels 23 on both sides and a conveyor belt 24. The outer sides of the conveyor wheels 23 on both sides are upturned to form inclined surfaces.On both sides of the conveyor belt 24 are the conveying areas 25, and in the middle is the water-permeable area 26. The conveying areas 25 are tensioned on the conveyor wheels and used to drive the conveyor belt forward. The water-permeable area 26 is made of filter cloth. The conveyor wheels are connected to a third motor, and the conveyor belt is driven by the third motor; an oil and salt removal assembly is also provided between the two conveyor wheels. The oil and salt removal assembly includes a cleaning and oil removal pipe 27, a waste liquid tank 28, a liquid pump 29, and a hot air blower 30. The cleaning and oil removal pipe is located directly above the concave conveyor belt 22; the inner cavity of the cleaning and oil removal pipe 27 is divided into a front end cavity and a rear end cavity. The rear end cavity is divided into upper and lower chambers. The lower chamber 31 is connected to the liquid pump 29 through a pipeline, and the liquid pump 29 is connected to the waste liquid tank 28. The waste liquid tank 28 is located directly below the concave conveyor belt 22. The upper chamber 33 is connected to the hot air blower 30 through a pipeline. Nozzles 32 are provided on the lower surface of the cleaning and oil removal pipe. The front end cavity communicates with the upper chamber 33. The part of the concave conveyor belt extending out of the waste liquid tank forms an iron removal part 34, and an iron removal assembly is provided directly above the iron removal part 34. The iron removal assembly includes an electromagnet 35 and a transmission component. The transmission component includes a pulley 36 and a belt 37. The pulley 36 is connected to a fourth motor, and the pulley is driven by the fourth motor. The front end of the transmission component overlaps with the concave conveyor belt in the vertical direction, and the electromagnet 35 is provided directly above the front end of the transmission component. The electromagnet 35 is connected to the controller, and the power supply of the electromagnet is controlled by the controller. A iron material collection box 38 is provided directly below the rear end of the transmission component; a composting system 39 is provided directly below the end of the concave conveyor belt and is used for further composting treatment of the processed garbage; the first motor, the second motor, the hydraulic cylinder, the electric screen, the servo motor, the third motor, the fourth motor, the hot air blower, the liquid pump, and the hot air blower are all connected to the controller through wires.

[0028] The present invention also discloses a method for pre-treating garbage by the above-mentioned kitchen waste high-temperature aerobic composting system before composting, and its steps include:

[0029] (1) Garbage crushing: Turn on the system power supply, start the controller to make the control system work. The controller outputs commands to the first motor, the third motor, the fourth motor, the hot air blower, the liquid pump, the electromagnet, and the hydraulic cylinder. Control the first motor and the third motor to rotate, drive the crushing wheel drum to rotate, and supply power to the electromagnet to generate magnetism. At the same time, control the hydraulic cylinder to open the upper cover plate, and the lower cover plate is in a closed state. Pour the kitchen waste into the ramp groove. When the waste enters between the two crushing wheel drums, the hard waste is crushed, and at the same time, the waste with moisture is squeezed and dehydrated. The crushed waste falls into the shredding box. Then manually control the hydraulic cylinder to close the upper cover plate through the controller, and start the second motor to rotate, so that the rotating cutter starts to rotate, and cut and crush the waste in the shredding box. During the cutting process, the controller can control the hot air blower to turn on to perform a certain drying and water removal function on the waste during the cutting process. After cutting, manually output a command to the hydraulic cylinder through the controller, and at the same time turn on the electric screen, the upper cover plate and the lower cover plate, so that the waste debris in the shredding box falls into the waste tray. After being screened by the electric screen on the waste tray, the waste debris with good cutting and small particle size falls onto the concave conveyor belt, and the waste with insufficient cutting and large particle size stays in the waste tray. After screening, control the servo motor to rotate a certain angle through the controller, so that the rear waste tray rotates to directly below the shredding box, and the waste tray with residual large-particle waste rotates upward. During the upward rotation of the waste tray with residual large-particle waste, due to the action of the heavy weight block, the waste tray always rotates around the hinge point, so that the waste tray always maintains balance when rotating out, preventing the waste in the waste tray from pouring out; and the ratchet prevents the waste tray from shaking violently during rotation. On the other hand, when the waste tray is directly below the shredding box, the fixed block hinged to the end of the annular rod naturally hangs down due to gravity, making the fixed block flush with the annular rod, and the annular rod can be received into the annular through hole. Therefore, during the rotation of the waste tray out, the waste tray rotates relative to its hinge position with the rotating ring, so that the annular rod is received into the annular through hole. When the rear waste tray rotates to directly below the shredding box, the waste tray with residual large-particle waste is exactly located at the leftmost side of the rotating ring. The servo motor stops rotating and transmits a signal to the controller. The controller controls the hydraulic cylinder to open the upper cover plate, and the lower cover plate is in a closed state to perform the next batch of garbage crushing; at this time, the rubber cushion block at the other end of the annular rod abuts against the bottom of the waste tray, so that the waste tray gradually tilts during the continuous upward rotation with the rotating ring. When the waste tray is located at the leftmost side of the rotating ring, the operator can add new waste to be processed into the waste tray. When the waste tray gradually rotates above the ramp groove, the inclination of the waste tray is relatively large, and the waste in the waste tray falls into the ramp groove due to gravity, pouring the new waste and the waste that was not completely crushed in the previous batch into the next batch of waste treatment;When the garbage tray rotates to a position slightly to the right of the highest point of the rotating ring, at this time, due to the gravitational force, the gravity hammer pulls down the clamping rod, causing the clamping rod to disengage from the ratchet wheel. The garbage tray can rotate clockwise around the hinge point normally. At this time, due to the action of the heavy object block, the garbage tray rotates clockwise gradually. When the clamping rod moves to the outermost side wall of the ratchet wheel and cannot move further, the garbage tray stops rotating and is in a horizontal state; during the rotation of the garbage tray, the annular rod gradually extends out of the annular through-hole; when the garbage tray stops rotating, the end of the annular rod disengages from the annular through-hole, and the fixed clamping block rotates due to gravity and clamps outside the annular through-hole to prevent the annular rod from retracting into the annular through-hole; when the garbage tray rotates back under the shredding box again, the fixed clamping block hangs down naturally due to gravity, making the fixed clamping block flush with the annular rod, and the annular rod can retract into the annular through-hole again to receive materials for the next time;

[0030] (2) Garbage degreasing and desalting: The garbage debris after being screened by the electric screen drops into the concave conveyor belt. The concave conveyor belt transports forward slowly, driving the garbage debris to transport forward slowly; at the same time, the liquid pump pumps the ethanol solution in the waste liquid tank into the cleaning and degreasing pipe, and then sprays it from the nozzle of the cleaning and degreasing pipe onto the middle water-permeable area of the concave conveyor belt to perform degreasing and desalting treatment on the garbage on the concave conveyor belt; the ethanol solution after cleaning penetrates through the middle water-permeable area and then falls back into the waste liquid tank; after the garbage debris is transported to leave the front cavity section of the cleaning and degreasing pipe and enters the rear cavity section, the hot air sprayed from the rear cavity section dries the degreased garbage;

[0031] (3) Iron removal: When the dried garbage debris enters the front electromagnet part of the transmission component, the ferromagnetic substances are attracted by the electromagnet and adhere to the belt. During the forward transmission of the belt, the ferromagnetic substances gradually disengage from the electromagnet area and finally fall into the iron material collection box to complete the separation of ferromagnetic substances in the garbage;

[0032] (4) Composting fermentation: The non-ferromagnetic garbage is transported by the concave conveyor belt and finally drops into the composting system for composting fermentation.

[0033] The technical solutions provided by the present invention have been introduced in detail above. For those of ordinary skill in the art, according to the idea of the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A high-temperature aerobic composting system for kitchen waste, characterized in that, it includes a garbage crushing component, an oil and salt removal component, an iron removal component and a composting system; The garbage crushing component includes a set of crushing drum wheels. There are two crushing drum wheels close to each other. The crushing drum wheels are used to squeeze out the moisture in the kitchen waste. The rotating shaft of the crushing drum wheels is connected to a first motor through a gearbox. The two crushing drum wheels are driven by the first motor to rotate for extrusion; directly below the crushing drum wheels is a chopping box. There are at least two groups of rotating knives in the chopping box. The rotating knives include a rotating rod and a blade. The rotating rod is connected to a second motor. The rotating rod is driven by the second motor to rotate. The blade is provided on the rotating rod. During the rotation of the rotating rod, the blade drives to cut and break the garbage. The upper and lower ends of the chopping box are both open. Upper covers and lower covers are respectively provided at the upper and lower openings of the chopping box. The upper cover and the lower cover are respectively connected to hydraulic cylinders. The upper cover or the lower cover is driven by the hydraulic cylinder to move to realize the opening or closing of the upper or lower opening; a hot air nozzle is also provided in the chopping box. The hot air nozzle is externally connected to a hot air blower; the garbage crushing component also includes a shredded material rework sub-component. The shredded material rework sub-component includes two parallel rotating rings. There is a garbage tray between the two rotating rings. The garbage tray is hinged on the two rotating rings. A ratchet is provided at the hinge between the garbage tray and the rotating rings. A waist-shaped through-hole groove is processed on the garbage tray. The waist-shaped through-hole groove extends obliquely upward. A clamping rod is provided in the waist-shaped through-hole groove. A gravity hammer is suspended from the clamping rod. The clamping rod is mounted on the ratchet; an annular rod is also provided on the rotating ring. An annular through-hole matching the annular rod is processed on the garbage tray. During the rotation of the garbage tray, the annular rod can extend into the annular through-hole; one end of the annular rod is hinged with a fixed clamping block, and the other end is provided with a rubber cushion block; a heavy object block is also fixed at the bottom of the garbage tray so that the center of gravity of the entire garbage tray is below the rotating ring. An electric screen is provided at the bottom of the garbage tray. The garbage tray can be driven by the rotating ring to rotate to directly below the chopping box. The axis of the rotating ring is connected to a servo motor. The rotating ring is driven by the servo motor to rotate. The servo motor is connected to a controller; directly below the shredded material rework sub-component is a concave conveyor belt. The concave conveyor belt includes conveyor wheels and a conveyor belt on both sides. The outer sides of the conveyor wheels on both sides are warped into inclined surfaces; the two sides of the conveyor belt are transmission areas, and the middle is a water-permeable area. The transmission areas are tensioned on the conveyor wheels to drive the conveyor belt to move forward. The water-permeable area is made of a filter cloth; the conveyor wheels are connected to a third motor. The conveyor belt is driven by the third motor; an oil and salt removal component is also provided between the two conveyor wheels; The degreasing and desalting component includes a cleaning and degreasing pipe, a waste liquid tank, a liquid pump and a hot air blower. The cleaning and degreasing pipe is located directly above the concave conveyor belt. The inner cavity of the cleaning and degreasing pipe is divided into a front end cavity and a rear end cavity. The rear end cavity is divided into upper and lower layers of cavities. The lower layer cavity is connected to the liquid pump through a pipeline. The liquid pump is connected to the waste liquid tank, and the waste liquid tank is located directly below the concave conveyor belt. The upper layer cavity is connected to the hot air blower through a pipeline. Nozzles are provided on the lower surface of the cleaning and degreasing pipe. The front end cavity is communicated with the upper layer cavity. The part of the concave conveyor belt extending out of the waste liquid tank forms an iron removal part, and the iron removal component is provided directly above the iron removal part. The iron removal component includes an electromagnet and a transmission component. The transmission component includes a pulley and a belt. The pulley is connected with a fourth motor, and the pulley is driven by the fourth motor to drive. The front end of the transmission component overlaps with the concave conveyor belt partially in the vertical direction. The electromagnet is provided directly above the front end of the transmission component. The electromagnet is connected to the controller, and the power supply of the electromagnet is controlled by the controller. A iron material collection box is provided directly below the rear end of the transmission component. The composting system is provided directly below the end of the concave conveyor belt for further composting treatment of the processed garbage. The first motor, the second motor, the hydraulic cylinder, the electric screen, the servo motor, the third motor, the fourth motor, the hot air blower, the liquid pump and the hot air blower are respectively connected to the controller through wires.

2. A kitchen waste high-temperature aerobic composting system according to claim 1, wherein, There are four garbage trays, and each garbage tray is arranged equidistantly in a circular array along the central axis of the rotating ring.

3. A kitchen waste high-temperature aerobic composting system according to claim 2, wherein, A slope groove is provided above the crushing wheel drum for concentrating garbage and guiding it between the two crushing wheel drums for crushing.

4. A method for pre-composting treatment of garbage by a kitchen waste high-temperature aerobic composting system according to claim 3, wherein the steps include: (1) Garbage crushing: Turn on the system power supply, and turn on the controller to start the system working. The controller outputs instructions to the first motor, the third motor, the fourth motor, the hot blower, the liquid pump, the electromagnet, and the hydraulic cylinder, controls the first motor and the third motor to rotate, drives the crushing wheel drum to rotate, and supplies power to the electromagnet to generate magnetism; at the same time, controls the hydraulic cylinder to open the upper cover plate, and the lower cover plate is in a closed state; Pour the kitchen waste into the ramp groove. When the waste enters between the two crushing wheel drums, the hard waste is crushed, and at the same time, the waste with moisture is squeezed and dehydrated; the crushed waste falls into the shredding box, and then manually control the hydraulic cylinder to close the upper cover plate through the controller, turn on the second motor to start rotating, so that the rotating knife starts to rotate, and cut and break the waste in the shredding box. During the cutting process, control the hot blower to turn on through the controller to perform a certain drying and water removal function on the waste during the cutting process; after cutting, manually output instructions to the hydraulic cylinder through the controller, and at the same time turn on the electric screen, the upper cover plate and the lower cover plate, so that the waste debris in the shredding box falls into the waste tray. After being screened by the electric screen on the waste tray, the waste debris with good cutting and small particle size falls onto the concave conveyor belt, and the waste with insufficient cutting and large particle size stays in the waste tray; after screening, control the servo motor to rotate a certain angle through the controller, so that the rear waste tray rotates to directly below the shredding box, and the waste tray with residual large-particle waste rotates upward; during the process of the waste tray with residual large-particle waste rotating upward, due to the action of the heavy weight block, the waste tray always rotates around the hinge point, so that the waste tray always maintains balance when rotating out, preventing the waste in the waste tray from pouring out; and the ratchet prevents the waste tray from shaking violently during rotation; on the other hand, when the waste tray is directly below the shredding box, the fixed block hinged to the end of the annular rod naturally hangs down due to gravity, so that the fixed block and the annular rod are flush, and the annular rod can be received into the annular through hole; therefore, during the process of the waste tray rotating out, the waste tray rotates relative to its hinged position with the rotating ring, so that the annular rod is received into the annular through hole; when the rear waste tray rotates to directly below the shredding box, the waste tray with residual large-particle waste is exactly located at the leftmost side of the rotating ring, the servo motor stops rotating, and transmits a signal to the controller, and the controller controls the hydraulic cylinder to open the upper cover plate, and the lower cover plate is in a closed state, and performs the next batch of garbage crushing; at this time, the rubber cushion block at the other end of the annular rod abuts against the bottom of the waste tray, so that the waste tray gradually tilts during the process of continuing to rotate upward with the rotating ring; when the waste tray is located at the leftmost side of the rotating ring, the operator adds new waste to be processed into the waste tray; when the waste tray gradually rotates above the ramp groove, the inclination of the waste tray is large, and the waste in the waste tray falls into the ramp groove due to gravity, pouring the new waste and the incompletely crushed waste from the previous batch into the next batch of waste treatment;When the garbage tray rotates to a position slightly to the right of the highest point of the rotating ring, at this time, due to the gravitational force, the gravity hammer pulls down the clamping rod, causing the clamping rod to disengage from the ratchet wheel. The garbage tray can rotate clockwise around the hinge point normally. At this time, due to the action of the heavy object block, the garbage tray rotates clockwise gradually. When the clamping rod moves to the outermost side wall of the ratchet wheel and cannot move further, the garbage tray stops rotating and is in a horizontal state. During the rotation of the garbage tray, the annular rod gradually extends out of the annular through hole. When the garbage tray stops rotating, the end of the annular rod protrudes out of the annular through hole, and the fixed clamping block rotates and clamps outside the annular through hole due to the gravitational force, preventing the annular rod from retracting into the annular through hole. When the garbage tray rotates back under the shredding box again, the fixed clamping block hangs down naturally due to the gravitational force, making the fixed clamping block flush with the annular rod, and the annular rod can retract into the annular through hole again to receive materials for the next time. (2) Garbage degreasing and desalting: The garbage debris screened by the electric screen falls into the concave conveyor belt. The concave conveyor belt slowly moves forward, driving the garbage debris to slowly move forward. At the same time, the liquid pump pumps the ethanol solution in the waste liquid tank into the cleaning and degreasing pipe, and then sprays it through the nozzles of the cleaning and degreasing pipe onto the middle water-permeable area of the concave conveyor belt to perform degreasing and desalting treatment on the garbage on the concave conveyor belt. The cleaned ethanol solution penetrates through the middle water-permeable area and then falls back into the waste liquid tank. After the garbage debris is transported to the rear end cavity section after leaving the front end cavity section of the cleaning and degreasing pipe, the hot air sprayed from the rear end cavity section dries the degreased garbage. (3) Iron removal: When the dried garbage debris enters the front end electromagnet part of the transmission component, the ferromagnetic substances are attracted by the electromagnet and adhere to the belt. During the forward transmission of the belt, the ferromagnetic substances gradually move out of the electromagnet area and finally fall into the iron material collection box, completing the separation of the ferromagnetic substances in the garbage. (4) Composting fermentation: The non-ferromagnetic garbage is transported by the concave conveyor belt and finally falls into the composting system for composting fermentation.

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