Anaerobic digestion efficient treatment system for kitchen waste

Abstract

The invention belongs to the technical field of biogas production equipment, and particularly relates to a kitchen waste anaerobic digestion efficient treatment system, which comprises an anaerobic digestion tank, an exhaust pipe is communicated with one end of the top of the anaerobic digestion tank, and a slag discharge pipe is communicated with the bottom of the anaerobic digestion tank; the pretreatment mechanism is arranged at one end of the top of the anaerobic digestion tank; the garbage is crushed and dehydrated through the design of the pretreatment mechanism, the crushed garbage can be distributed more uniformly in the anaerobic digestion tank, microorganisms can be in full contact with the garbage, the decomposition efficiency of the microorganisms on organic matters in the garbage is improved, and therefore the overall efficiency of anaerobic digestion is improved; the solid concentration is increased, and the relatively high solid concentration is beneficial to forming a tighter reaction system in the anaerobic digestion process, so that the contact area between microorganisms and organic substances is increased, and the anaerobic digestion efficiency is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of biogas production equipment, in particular to an efficient disposal system for anaerobic digestion of kitchen waste. Background Art

[0002] Kitchen waste is the main component of urban domestic waste. At present, the treatment of kitchen waste is mainly carried out through landfill and incineration. Kitchen waste itself contains a lot of organic matter, water and grease, so it has a high recycling value compared with other garbage. Therefore, the treatment of kitchen waste through landfill and incineration is not only inefficient but also has low resource utilization rate;

[0003] After searching, a Chinese patent with publication number CN213012831U discloses a biogas production equipment for anaerobic digestion of fruit and vegetable waste, including a mounting base, a fermentation tank body is fixedly mounted on the mounting base, a sealing cover is mounted on the upper surface of the fermentation tank body, a flushing mechanism is fixedly mounted on the upper surface of the fermentation tank body on one side of the sealing cover, a driving motor is fixedly mounted on the upper surface of the fermentation tank body on the other side of the sealing cover, a residue outlet is fixedly mounted on the lower surface of the fermentation tank body, a fixed support leg is fixedly mounted on the lower surface of the mounting base, a mounting seat is fixedly mounted on the fermentation tank body, a rotating gear is movably mounted on the mounting seat, a connecting support leg is fixedly mounted on the rotating gear, a cleaning blade is mounted on the end of the connecting support leg on the inner surface of the fermentation tank body, and a transmission gear is fixedly mounted on the output end of the driving motor;

[0004] In the above technology, although the cleaning tool can move close to the inner wall of the fermentation tank through the design of the driving motor and the rotating gear, so as to clean the residue on the inner wall of the fermentation tank, the equipment does not set a pretreatment mechanism before the garbage fermentation, that is, the garbage is not crushed and dehydrated. When the garbage particles are large, it will cause uneven distribution in the digester, which will affect the full contact between the microorganisms and the sludge and reduce the efficiency of the microorganisms in decomposing organic matter. In addition, when the water content in the garbage is high, the concentration of organic matter in the digester will be diluted, resulting in a reduction in the available substrate for the microorganisms, thereby reducing the efficiency of anaerobic digestion.

[0005] To this end, the present invention provides an efficient disposal system for anaerobic digestion of kitchen waste. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: the high-efficiency anaerobic digestion and disposal system of kitchen waste of the present invention comprises:

[0008] An anaerobic digestion tank, wherein one end of the top of the anaerobic digestion tank is connected to an exhaust pipe, and the bottom of the anaerobic digestion tank is connected to a slag discharge pipe;

[0009] A pretreatment mechanism, wherein the pretreatment mechanism is arranged at one end of the top of the anaerobic digestion tank;

[0010] The pretreatment mechanism includes a conical sleeve, a crushing box and a filter sleeve. The conical sleeve is horizontally arranged. A crushing box is arranged at one end with a large diameter at the top of the conical sleeve. Two crushing rollers are rotatably connected to the inner wall of the crushing box. A filter sleeve is fixedly connected inside the conical sleeve. A connecting pipe is connected to the bottom of the crushing box. The bottom of the connecting pipe extends to the inside of the conical sleeve and is connected to the filter sleeve. The filter sleeve is connected to a first connecting sleeve at one end of the crushing box, and a second connecting sleeve is connected to the other end of the filter sleeve. A first cylinder is installed on the inner wall of the first connecting sleeve, a first pressure plate is fixedly connected to the output end of the pneumatic cylinder, a second cylinder is installed on the inner wall of the second connecting sleeve, and a second pressure plate is fixedly connected to the output of the second cylinder. A drain pipe is connected to the bottom of the conical sleeve at one end of the crushing box, a conduit is connected to the bottom of the second connecting sleeve, and the bottom of the conduit is connected to the anaerobic digestion tank.

[0011] As a further explanation of the present invention, a first motor is installed at the center of the top of the anaerobic digester tank, a stirring shaft is fixedly connected to the output end of the first motor, stirring blades are fixedly connected to both ends of the side walls of the stirring shaft, a controller is installed at one end of the top of the anaerobic digester tank away from the exhaust pipe, and the first motor is electrically connected to the controller.

[0012] As a further illustration of the present invention, a feeding pipe is connected to one end of the top of the anaerobic digestion tank away from the conduit, and a sealing cap is threadedly connected to the top of the feeding pipe.

[0013] As a further illustration of the present invention, a temperature sensor is installed on the top of the inner wall of the anaerobic digestion tank, and a heating plate is installed on the bottom of the inner wall of the anaerobic digestion tank. Both the temperature sensor and the heating plate are electrically connected to the controller.

[0014] As a further illustration of the present invention, an annular tube is fixedly connected to the top of the anaerobic digester, a plurality of spray ports are connected to the bottom of the annular tube, a centrifugal pump is connected to one end of the bottom of the side wall of the anaerobic digester, an output end of the centrifugal pump is connected to the annular tube through a reflux pipe, and the centrifugal pump is electrically connected to a controller.

[0015] As a further illustration of the present invention, one end of the side wall of the pulverizing box is rotatably connected to two gears, the two gears are meshed with each other, and the two gears are fixedly connected to the two pulverizing rollers respectively.

[0016] As a further illustration of the present invention, a second motor is fixedly connected to a side wall of the pulverizing box at one end away from the gear, and an output end of the second motor is fixedly connected to the pulverizing roller.

[0017] As a further illustration of the present invention, a gate plate is slidably connected to one end of the side wall of the conduit, a support arm is fixedly connected to one end of the side wall of the anaerobic digestion tank, an electric telescopic rod is connected to the top fixed plate of the support arm, an output end of the electric telescopic rod is fixedly connected to the gate plate, and the electric telescopic rod is electrically connected to the controller.

[0018] As a further illustration of the present invention, a through hole is provided at one end of the side wall of the conduit, a slide groove is provided on the inner wall of the conduit at the through hole, and both the through hole and the slide groove are slidably connected to the gate plate.

[0019] As a further explanation of the present invention, the top of the crushing box is connected to a material receiving hopper, one end of the exhaust pipe is equipped with a first valve, one end of the slag discharge pipe is equipped with a second valve, four supporting legs are fixedly connected to the bottom of the anaerobic digestion tank, and the bottom of the first connecting sleeve is fixedly connected to a support column.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The high-efficiency anaerobic digestion treatment system for kitchen waste of the present invention drives the crushing roller to rotate by the second motor, thereby crushing the waste, so that the waste can be distributed more evenly in the anaerobic digestion tank, so that the microorganisms can fully contact with the waste, and the decomposition efficiency of the microorganisms on the organic matter in the waste is improved, thereby improving the overall efficiency of anaerobic digestion. In addition, the first cylinder and the second cylinder drive the first pressing plate and the second pressing plate to move respectively, so as to squeeze the waste, thereby squeezing out the water in the waste, and the squeezed water will pass through the filter sleeve and fall onto the conical sleeve, and be discharged from the drain pipe at one end of the conical sleeve. The solid concentration of the dehydrated waste will be increased, and a higher solid concentration is conducive to forming a tighter reaction system in the anaerobic digestion process, increasing the contact area between the microorganisms and the organic matter, and thus improving the efficiency of anaerobic digestion;

[0022] 2. The high-efficiency anaerobic digestion treatment system for kitchen waste of the present invention drives the stirring shaft to rotate by the first motor, thereby driving the stirring blade to rotate, thereby achieving the stirring of the waste. At the same time, the waste at the bottom of the anaerobic digestion tank is extracted by the action of the centrifugal pump and transported to the annular pipe, and finally sprayed out from the spray port, so that the waste can circulate up and down in the anaerobic digestion tank. In this way, the waste can be more easily contacted with microorganisms under the mutual cooperation of the first motor and the centrifugal pump, thereby improving the anaerobic digestion efficiency;

[0023] 3. The efficient anaerobic digestion treatment system for kitchen waste described in the present invention can sense the internal temperature of the anaerobic digestion tank through the design of the temperature sensor, and transmit the data signal to the controller. The controller controls the temperature of the heating plate according to the signal transmitted by the temperature sensor, ensuring that the anaerobic digestion process is carried out within a suitable temperature range, allowing the microorganisms to always maintain a high activity, thereby effectively decomposing organic matter. In addition, the organic matter in the garbage can be dissolved faster at a higher temperature, which can improve the efficiency of the entire digestion process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 is a cross-sectional view of the present invention;

[0027] Figure 3 It is a schematic diagram of the internal structure of the anaerobic digestion tank in the present invention;

[0028] Figure 4 yes Figure 3 Another perspective structural diagram;

[0029] Figure 5 It is a schematic diagram of the internal structure of the crushing box in the present invention;

[0030] Figure 6 It is a schematic diagram of the internal structure of the tapered sleeve in the present invention;

[0031] Figure 7 It is a schematic diagram of the internal structure of the filter sleeve in the present invention;

[0032] Figure 8 It is a schematic diagram of the connection structure between the conduit and the gate in the present invention;

[0033] Fig. 9 is a schematic diagram of the side cross-sectional structure of the catheter in the present invention;

[0034] Fig.10 yes Figure 1 Schematic diagram of the structure from another perspective.

[0035] In the figure: 1, anaerobic digester; 2, exhaust pipe; 3, slag discharge pipe; 4, conical sleeve; 5, crushing box; 6, filter sleeve; 7, crushing roller; 8, connecting pipe; 9, first connecting sleeve; 10, second connecting sleeve; 11, first cylinder; 12, first pressure plate; 13, second cylinder; 14, second pressure plate; 15, drain pipe; 16, conduit; 17, first motor; 18, stirring shaft; 19, stirring blade; 20, control controller; 21. feeding pipe; 22. sealing cover; 23. temperature sensor; 24. heating plate; 25. annular pipe; 26. spray port; 27. centrifugal pump; 28. return pipe; 29. ​​gear; 30. second motor; 31. gate; 32. support arm; 33. electric telescopic rod; 34. through hole; 35. slide; 36. hopper; 37. first valve; 38. second valve; 39. support leg; 40. support column. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] like Figures 1 to 10 As shown, the kitchen waste anaerobic digestion and efficient disposal system according to the embodiment of the present invention comprises:

[0038] An anaerobic digestion tank 1, one end of the top of the anaerobic digestion tank 1 is connected to an exhaust pipe 2, and the bottom of the anaerobic digestion tank 1 is connected to a slag discharge pipe 3;

[0039] A pretreatment mechanism, which is arranged at one end of the top of the anaerobic digestion tank 1;

[0040] The pretreatment mechanism includes a conical sleeve 4, a crushing box 5 and a filter sleeve 6. The conical sleeve 4 is arranged horizontally. A crushing box 5 is arranged at one end with a large diameter at the top of the conical sleeve 4. Two crushing rollers 7 are rotatably connected to the inner wall of the crushing box 5. The filter sleeve 6 is fixedly connected inside the conical sleeve 4. A connecting pipe 8 is connected to the bottom of the crushing box 5. The bottom of the connecting pipe 8 extends to the inside of the conical sleeve 4 and is connected to the filter sleeve 6. The filter sleeve 6 is located at one end of the crushing box 5 and is connected to a first connecting sleeve 9. The other end of the filter sleeve 6 is connected to a second connecting sleeve 10. A first cylinder 11 is installed on the inner wall of the first connecting sleeve 9. A first pressure plate 12 is fixedly connected to the output end of the pneumatic cylinder. A second cylinder 13 is installed on the inner wall of the second connecting sleeve 10. The output of the second cylinder 13 is fixedly connected to a second pressure plate 14. A drain pipe 15 is connected to the bottom of the conical sleeve 4 at one end of the crushing box 5. A conduit 16 is connected to the bottom of the second connecting sleeve 10. The bottom of the conduit 16 is connected to the anaerobic digestion tank 1.

[0041] In this embodiment, the garbage is crushed and dehydrated through the design of a pretreatment mechanism. The crushed garbage can be distributed more evenly in the anaerobic digestion tank 1, so that the microorganisms can fully contact the garbage, improve the efficiency of the microorganisms in decomposing organic matter in the garbage, and thus improve the overall efficiency of anaerobic digestion. The solid concentration of the dehydrated garbage will increase. A higher solid concentration is conducive to forming a tighter reaction system during the anaerobic digestion process, increasing the contact area between microorganisms and organic matter, and thus improving the efficiency of anaerobic digestion. When working, the garbage is first put into the crushing box 5, and the crushing roller 7 located in the crushing box 5 will crush the garbage. The crushed garbage will fall into the filter sleeve 6 through the connecting pipe 8. At this time, the first cylinder 11 and the second cylinder 13 are opened at the same time. Under the drive of the first cylinder 11 and the second cylinder 13 , the first pressing plate 12 and the second pressing plate 14 will be close to each other, thereby squeezing the garbage to squeeze out excess water in the garbage, thereby achieving dehydration of the garbage. The dehydrated water will pass through the filter sleeve 6 and drip into the conical sleeve 4, and be discharged along the inflow drain pipe 15 at the bottom of the conical sleeve 4. When the garbage is dehydrated, the second cylinder 13 is opened to drive the second pressing plate 14 to move into the second connecting sleeve 10, wherein the position of the second pressing plate 14 will not block the conduit 16 for the movement of the garbage. Then the first cylinder 11 is opened to drive the first pressing plate 12 to push the garbage to the conduit 16. At this time, the garbage will fall into the anaerobic digestion tank 1 through the conduit 16. At this time, the garbage can undergo anaerobic digestion reaction in the anaerobic digestion tank 1, and the generated biogas will be discharged through the exhaust pipe 2, and the remaining waste residue will be discharged from the slag discharge tank.

[0042] Furthermore, if Figure 1 As shown, a first motor 17 is installed at the top center of the anaerobic digestion tank 1, a stirring shaft 18 is fixedly connected to the output end of the first motor 17, stirring blades 19 are fixedly connected to both ends of the side walls of the stirring shaft 18, and a controller 20 is installed at one end of the top of the anaerobic digestion tank 1 away from the exhaust pipe 2, and the first motor 17 is electrically connected to the controller 20;

[0043] In this embodiment, the stirring shaft 18 is driven to rotate by the first motor 17, thereby driving the stirring blades 19 to rotate, thereby stirring the garbage, so that the microorganisms and the garbage can be fully contacted, thereby improving the efficiency of anaerobic digestion.

[0044] Furthermore, if Figures 2 to 4 As shown, the top of the anaerobic digestion tank 1 is connected to one end away from the conduit 16 with a feeding pipe 21, and the top of the feeding pipe 21 is threadedly connected with a sealing cap 22;

[0045] In this embodiment, water, or other auxiliary substances and catalysts that facilitate anaerobic digestion can be added to the anaerobic digestion tank 1 through the design of the adding pipe. It should be noted that the dehydration operation performed on the garbage in the pretreatment mechanism is to allow the garbage to flow and mix more easily in the internal circulation system of the anaerobic digestion tank 1. Too high a moisture content may cause the garbage to flow poorly during the circulation process, or even cause blockage. Therefore, when too much moisture in the garbage is removed, resulting in reduced fluidity, the staff can add water to the anaerobic digestion tank 1 through the adding pipe to ensure the moisture content of the garbage.

[0046] Furthermore, if Figure 3 to Figure 4 As shown, a temperature sensor 23 is installed on the top of the inner wall of the anaerobic digestion tank 1, and a heating plate 24 is installed on the bottom of the inner wall of the anaerobic digestion tank 1. The temperature sensor 23 and the heating plate 24 are both electrically connected to the controller 20;

[0047] In this embodiment, the temperature sensor 23 is designed to sense the internal temperature of the anaerobic digestion tank 1 and transmit a data signal to the controller 20. The controller 20 controls the temperature of the heating plate 24 according to the signal transmitted by the temperature sensor 23, ensuring that the anaerobic digestion process is carried out within a suitable temperature range, so that the microorganisms can always maintain a high activity, thereby effectively decomposing organic matter. In addition, the organic matter in the garbage can be dissolved faster at a higher temperature, which can improve the efficiency of the entire digestion process.

[0048] Furthermore, if Figures 2 to 4 As shown, an annular tube 25 is fixedly connected to the top of the anaerobic digestion tank 1, and a plurality of spray ports 26 are connected to the bottom of the annular tube 25. A centrifugal pump 27 is connected to one end of the bottom of the side wall of the anaerobic digestion tank 1. The output end of the centrifugal pump 27 is connected to the annular tube 25 through a reflux pipe 28, and the centrifugal pump 27 is electrically connected to the controller 20.

[0049] In this embodiment, the garbage deposited at the bottom of the anaerobic digestion tank 1 is extracted by the centrifugal pump 27 and transported to the annular tube 25, and finally sprayed out from the spray port 26 at the bottom of the annular tube 25, thereby realizing the up and down circulation of the garbage in the anaerobic digestion tank 1, so that the garbage can be more fully in contact with the microorganisms, which can further improve the anaerobic digestion efficiency.

[0050] Furthermore, if Fig.10 As shown, one end of the side wall of the crushing box 5 is rotatably connected to two gears 29, the two gears 29 are meshed with each other, and the two gears 29 are fixedly connected to the two crushing rollers 7 respectively;

[0051] In this embodiment, the design of the gear 29 allows the two crushing rollers 7 to rotate synchronously in opposite directions, thereby facilitating the crushing rollers 7 to crush the garbage.

[0052] Furthermore, if Figure 1 As shown, a second motor 30 is fixedly connected to the side wall of the crushing box 5 away from the gear 29, and an output end of the second motor 30 is fixedly connected to the crushing roller 7;

[0053] In this embodiment, the second motor 30 is designed to provide driving force for the rotation of the crushing roller 7. Since the two crushing rollers 7 can rotate synchronously in opposite directions through the design of the gear 29, only one second motor 30 needs to be installed to drive the two crushing rollers 7 to rotate at the same time, thereby reducing the manufacturing cost of the equipment.

[0054] Furthermore, if Figure 1 and Figure 8 As shown, a gate plate 31 is slidably connected to one end of the side wall of the conduit 16, a support arm 32 is fixedly connected to one end of the side wall of the anaerobic digestion tank 1, an electric telescopic rod 33 is connected to the top fixing plate of the support arm 32, an output end of the electric telescopic rod 33 is fixedly connected to the gate plate 31, and the electric telescopic rod 33 is electrically connected to the controller 20;

[0055] In this embodiment, the anaerobic digestion tank 1 needs to be in a low oxygen state during the anaerobic digestion process, so the gate 31 can be driven to move through the design of the electric telescopic rod 33, so that the gate 31 can seal the conduit 16, thereby preventing oxygen from entering the anaerobic digestion tank 1 from the conduit 16.

[0056] Furthermore, if Fig. 9 As shown, a through hole 34 is provided at one end of the side wall of the conduit 16, and a slide groove 35 is provided at the inner wall of the conduit 16 at the through hole 34, and both the through hole 34 and the slide groove 35 are slidably connected to the gate plate 31;

[0057] In this embodiment, the gate plate 31 can be smoothly slidably connected to the conduit 16 through the design of the through hole 34 and the slide groove 35 .

[0058] Furthermore, if Figure 1 and Fig.10 As shown, the top of the crushing box 5 is connected to a receiving hopper 36, a first valve 37 is installed at one end of the exhaust pipe 2, a second valve 38 is installed at one end of the slag discharge pipe 3, four support legs 39 are fixedly connected to the bottom of the anaerobic digestion tank 1, and a support column 40 is fixedly connected to the bottom of the first connecting sleeve 9;

[0059] In this embodiment, the design of the first valve 37 and the second valve 38 allows the interior of the anaerobic digester 1 to be in a low oxygen state, thereby facilitating anaerobic digestion. The design of the support legs 39 supports the anaerobic digester 1, and the design of the support column 40 supports the first connecting sleeve 9, thereby making the entire structure more stable.

[0060] Working principle: first, pour the food waste from the receiving hopper 36 into the crushing box 5, and turn on the second motor 30 at the same time. Under the drive of the second motor 30, the crushing roller 7 connected to its output end will rotate, and the two crushing rollers 7 are connected together through two gears 29. After the motor is turned on, the two crushing rollers 7 can rotate synchronously in opposite directions to crush the food waste. The crushed waste will fall into the filter sleeve 6 through the connecting pipe 8. At this time, the first cylinder 11 and the second cylinder 13 are turned on at the same time. Under the drive of the first cylinder 11 and the second cylinder 13, the first pressing plate 12 and the second pressing plate 14 will approach each other, thereby squeezing the waste to squeeze out excess water in the waste, thereby achieving waste. The dehydrated water will pass through the filter sleeve 6 and drip into the conical sleeve 4, and be discharged along the inflow drain pipe 15 at the bottom of the conical sleeve 4. The dehydrated garbage can flow and mix more easily in the internal circulation system of the anaerobic digestion tank 1. Too high a moisture content may cause the garbage to flow poorly during the circulation process, or even cause blockage. If too much water in the garbage is removed, resulting in reduced fluidity, the staff can add water to the anaerobic digestion tank 1 through the adding pipe to ensure the moisture content of the garbage. When the garbage is dehydrated, the second cylinder 13 is opened to drive the second pressing plate 14 to move into the second connecting sleeve 10, and the first cylinder 11 is opened at the same time to drive the first pressing plate 12 to push the garbage to At the conduit 16, the garbage will fall into the anaerobic digestion tank 1 through the conduit 16. Before the anaerobic digestion process, the electric telescopic rod 33 needs to be opened to drive the gate plate 31 to move, thereby sealing the conduit 16, thereby ensuring that oxygen does not enter the anaerobic digestion tank 1 from the conduit 16. During the anaerobic digestion process, the first motor 17 needs to be turned on, and the stirring shaft 18 is driven to rotate by the first motor 17, thereby driving the stirring blade 19 to rotate, thereby achieving the stirring of the garbage. When the first motor 17 is turned on, the centrifugal pump 27 is turned on, and the garbage at the bottom of the anaerobic digestion tank 1 is extracted by the action of the centrifugal pump 27, and transported to the annular pipe 25, and finally sprayed out from the spray port 26, so that the garbage can move up and down in the anaerobic digestion tank 1 The garbage can be more easily contacted with the microorganisms under the cooperation of the first motor 17 and the centrifugal pump 27, thereby improving the anaerobic digestion efficiency. In addition, the temperature sensor 23 inside the anaerobic digestion tank 1 can sense the internal temperature of the anaerobic digestion tank 1 and transmit the data signal to the controller 20. The controller 20 controls the temperature of the heating plate 24 according to the signal transmitted by the temperature sensor 23, ensuring that the anaerobic digestion process is carried out within a suitable temperature range, so that the microorganisms can always maintain a high activity, thereby effectively decomposing organic matter. In addition, the organic matter in the garbage can be dissolved faster at a higher temperature, which can improve the efficiency of the entire digestion process. The biogas generated during the anaerobic digestion process will be discharged through the exhaust pipe 2.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. High-efficiency anaerobic digestion system for food waste, including: An anaerobic digestion tank (1), wherein one end of the top of the anaerobic digestion tank (1) is connected to an exhaust pipe (2), and the bottom of the anaerobic digestion tank (1) is connected to a slag discharge pipe (3); A pretreatment mechanism, the pretreatment mechanism being arranged at one end of the top of the anaerobic digestion tank (1); Features: The pretreatment mechanism comprises a conical sleeve (4), a crushing box (5) and a filter sleeve (6); the conical sleeve (4) is arranged horizontally; a crushing box (5) is arranged at the large-diameter end of the top of the conical sleeve (4); two crushing rollers (7) are rotatably connected to the inner wall of the crushing box (5); the filter sleeve (6) is fixedly connected inside the conical sleeve (4); a connecting pipe (8) is connected at the bottom of the crushing box (5); the bottom of the connecting pipe (8) extends to the inside of the conical sleeve (4) and is connected to the filter sleeve (6); the filter sleeve (6) is located at one end of the crushing box (5) and is connected to a first connecting sleeve (9); The other end of the filter sleeve (6) is connected to a second connecting sleeve (10); a first cylinder (11) is installed on the inner wall of the first connecting sleeve (9); a first pressure plate (12) is fixedly connected to the output end of the pneumatic cylinder; a second cylinder (13) is installed on the inner wall of the second connecting sleeve (10); the output of the second cylinder (13) is fixedly connected to a second pressure plate (14); the bottom of the conical sleeve (4) located at one end of the crushing box (5) is connected to a drain pipe (15); the bottom of the second connecting sleeve (10) is connected to a conduit (16); the bottom of the conduit (16) is connected to the anaerobic digestion tank (1).

2. The high-efficiency anaerobic digestion treatment system for kitchen waste according to claim 1 is characterized in that: A first motor (17) is installed at the center of the top of the anaerobic digestion tank (1); a stirring shaft (18) is fixedly connected to the output end of the first motor (17); stirring blades (19) are fixedly connected to both ends of the side walls of the stirring shaft (18); a controller (20) is installed at one end of the top of the anaerobic digestion tank (1) away from the exhaust pipe (2); and the first motor (17) is electrically connected to the controller (20).

3. The high-efficiency anaerobic digestion treatment system for food waste according to claim 2 is characterized in that: The top of the anaerobic digestion tank (1) is connected to one end thereof which is away from the conduit (16) and is connected to a feeding pipe (21). The top of the feeding pipe (21) is threadedly connected to a sealing cover (22).

4. The high-efficiency anaerobic digestion treatment system for kitchen waste according to claim 3 is characterized in that: A temperature sensor (23) is installed at the top of the inner wall of the anaerobic digestion tank (1), and a heating plate (24) is installed at the bottom of the inner wall of the anaerobic digestion tank (1). Both the temperature sensor (23) and the heating plate (24) are electrically connected to the controller (20).

5. The high-efficiency anaerobic digestion and disposal system for kitchen waste according to claim 4 is characterized in that: The top of the anaerobic digestion tank (1) is fixedly connected to an annular tube (25), the bottom of the annular tube (25) is connected to a plurality of spray ports (26), one end of the bottom of the side wall of the anaerobic digestion tank (1) is connected to a centrifugal pump (27), the output end of the centrifugal pump (27) is connected to the annular tube (25) via a reflux pipe (28), and the centrifugal pump (27) is electrically connected to a controller (20).

6. The high-efficiency anaerobic digestion treatment system for food waste according to claim 1 is characterized in that: One end of the side wall of the crushing box (5) is rotatably connected to two gears (29), the two gears (29) are meshed with each other, and the two gears (29) are fixedly connected to the two crushing rollers (7) respectively.

7. The high-efficiency anaerobic digestion and treatment system for kitchen waste according to claim 6, characterized in that: A second motor (30) is fixedly connected to a side wall of the crushing box (5) at one end away from the gear (29), and an output end of the second motor (30) is fixedly connected to a crushing roller (7).

8. The high-efficiency anaerobic digestion and disposal system for kitchen waste according to claim 1, characterized in that: A gate plate (31) is slidably connected to one end of the side wall of the conduit (16); a support arm (32) is fixedly connected to one end of the side wall of the anaerobic digestion tank (1); an electric telescopic rod (33) is connected to a fixed plate on the top of the support arm (32); an output end of the electric telescopic rod (33) is fixedly connected to the gate plate (31); and the electric telescopic rod (33) is electrically connected to a controller (20).

9. The high-efficiency anaerobic digestion treatment system for kitchen waste according to claim 8, characterized in that: A through hole (34) is provided at one end of the side wall of the conduit (16), and a slide groove (35) is provided on the inner wall of the conduit (16) at the through hole (34), and both the through hole (34) and the slide groove (35) are slidably connected to the gate plate (31).

10. The high-efficiency anaerobic digestion treatment system for food waste according to claim 1, characterized in that: The top of the pulverizing box (5) is connected to a receiving hopper (36), one end of the exhaust pipe (2) is equipped with a first valve (37), one end of the slag discharge pipe (3) is equipped with a second valve (38), the bottom of the anaerobic digestion tank (1) is fixedly connected to four supporting legs (39), and the bottom of the first connecting sleeve (9) is fixedly connected to a supporting column (40).

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