CN113441397A

CN113441397A - Domestic waste intelligence letter sorting pretreatment device

Info

Publication number: CN113441397A
Application number: CN202110825032.5A
Authority: CN
Inventors: 周厚永; 张玉保; 王养忠; 张文涛
Original assignee: BAODING CITY FANGZHENG MACHINERY FACTORY
Current assignee: BAODING CITY FANGZHENG MACHINERY FACTORY
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2021-09-28

Abstract

The invention discloses an intelligent sorting pretreatment device for household garbage, which comprises a rack, a bounce screen, a discharge hopper, a blanking hopper, a bag breaking machine, an air conveying system and a lifter, wherein the bounce screen is obliquely fixed on the rack; the invention has compact structure, realizes the bag breaking and pre-classification pretreatment of the household garbage, and provides an effective device for the high-efficiency and high-recovery-rate operation of an intelligent sorting system.

Description

Domestic waste intelligence letter sorting pretreatment device

Technical Field

The invention relates to an intelligent sorting pretreatment system for household garbage, and belongs to the technical field of garbage sorting.

Background

With the development of science and technology and the increasing living standard of people, people pay more and more attention to the construction of ecological civilization, and the classification treatment of household garbage becomes a vital problem in China and even the world. At present, the traditional garbage classification in China

With the continuous maturity of artificial intelligence and robot technology, the intelligent sorting system plays an important role in the sorting treatment of the household garbage. The intelligent sorting system is a novel processing mode, is an intelligent supplement to a front-end material physical screening mode, and meanwhile, the robot can continuously and efficiently sort, so that the defect of manpower of common workers is overcome, and the efficiency of household garbage classification and resource recycling is improved. Therefore, urgent need to develop a domestic waste intelligence letter sorting pretreatment system, break open first screening and even cloth with bagged domestic waste, provide an effective equipment for intelligent letter sorting system's high efficiency and the operation of high recovery rate.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention aims to provide an intelligent household garbage sorting pretreatment system, which is used for carrying out equipment work for the high-efficiency and high-recovery-rate operation of an artificial intelligent sorting system.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention discloses an intelligent sorting pretreatment system for household garbage, which comprises a rack, a bounce screen, a discharge hopper, a blanking hopper, a bag breaking machine, an air supply system and a lifter, wherein the bounce screen is obliquely arranged on the rack, the bag breaking machine is arranged on the bounce screen, and the feed hopper is arranged above the bag breaking machine; the lifting machine is vertically fixed on the outer side of the rack and is arranged at the front ends of the bouncing screen and the bag breaking machine; go out the hopper and connect in the left bottom of bounce screen, the air-assisted system sets up the bounce screen right side, the blanking fill passes through bolted connection and is in go out the hopper right side on the frame roof beam of bounce screen below, including first undersize hopper, second undersize hopper, third undersize hopper and the light material hopper that arranges in proper order, first undersize hopper left side material mouth stretches into in going out the hopper.

Furthermore, the bouncing screen comprises an air bin, a screen body, a wind screen, a bearing seat, an eccentric bearing, a driving shaft, a bearing, a motor speed reducer, a screen plate component, an air deflector, a driven shaft, an adjusting wind deflector and support legs, wherein the screen body is of a closed structure, the bottom end of the screen body is communicated with the discharging hopper, and the screen body is fixed on the rack through the support legs or a connecting plate; the sieve plate assembly is fixed on the bearing seat through a bolt, the outer ring of the eccentric bearing is fixed in the bearing seat, the inner ring of the eccentric bearing is fixed on the driving shaft or the driven shaft, and the driving shaft is driven by a motor through a speed reducer;

the wind-blocking curtains are provided with 4 groups and are respectively installed on an end plate at the left end of the sieve plate assembly through bolts; the air deflector is arranged on a top plate of the screen body, and a bent plate of the air deflector is arranged below the bag breaking machine;

one end of the adjusting wind shield is adjustably installed on the top plate of the screen body through a screw rod, and the other end of the adjusting wind shield is installed on the inner side of the right end of the bag breaking machine box body.

Further, the bag breaking machine comprises a box body, a roller, a bearing, a static knife fixing plate, moving knives, fixed knives and a speed reducer, wherein the roller is installed on the box body through the bearing, and the moving knives are uniformly arranged on the surface of the roller; the fixed cutter is composed of a main fixed cutter and auxiliary fixed cutters, every 4 groups of auxiliary fixed cutters are fixed on a fixed cutter fixing plate in the box body at equal intervals through bolts, every 2 groups of auxiliary fixed cutters are installed on the left side and the right side of the main fixed cutter through bolts, the speed reducer is installed at the driving shaft end of the roller, and the lower end of the speed reducer is arranged on the box body through a support.

Furthermore, the air supply system comprises a fan, a return air pipe, an air pipe mounting seat, a separation box, a blowing nozzle, an air inlet pipe and a regulating valve, wherein the fan is arranged above the air bin, one end of the return air pipe is connected with a return air inlet of the fan, the other end of the return air pipe is connected with the separation box, and the bottom end of the separation box is arranged above the screen body; the air pipe mounting seat fixes the return air pipe outside the screen body, one end of the air inlet pipe is connected with the air outlet of the fan, the other end of the air inlet pipe is connected with the adjusting valve, the air blowing nozzle is connected with the other end of the adjusting valve, and the air blowing nozzle is fixed in an air bin of the bounce screen through an adjusting screw rod.

Furthermore, the hoisting machine comprises a hoisting frame, pulleys, pulley mounting seats, steel wires, a hoisting trolley, a steel wire rope fixing assembly, buffer parts and a miniature hoisting machine, wherein the frame pulleys are mounted in the pulley mounting seats through bolts, the pulley mounting seats are mounted in the middle of a cross beam above the hoisting frame, and two groups of buffer parts are arranged above the cross beam; the lifting trolley is arranged on the lifting rack in a sliding mode, and the micro-elevator is fixed below the lifting rack on one side of the lifting trolley; one end of the steel wire is wound on the shaft of the miniature elevator, and the other end of the steel wire penetrates through the pulley and is connected below the lifting trolley through the steel wire rope fixing component.

Furthermore, the lifting trolley comprises a frame, a first roller, a hanging frame, a second roller, a thrust frame, a tension spring, a third roller and a baffle, wherein 4 second rollers are symmetrically arranged on two sides of the lifting trolley and can be arranged in a vertical supporting groove of the frame in a rolling manner; the upper two second rollers are connected with the hanging rack, and the lower two second rollers are connected with the hanging rack and the thrust frame;

the two sides of the lifting trolley are symmetrically provided with 4 first rollers, the upper two first rollers are fixed above the vertical support of the frame, and the lower two first rollers are fixed below the thrust frame;

the two third rollers are symmetrically arranged on two sides of the bottom of the vertical support of the frame, one end of the tension spring is connected to the hanging frame, and the other end of the tension spring is connected to the thrust frame;

the baffle is arranged above the third roller and is vertically and fixedly connected with the vertical support of the frame.

According to the technical scheme, compared with the prior art, the intelligent sorting pretreatment system for the household garbage comprises a rack, a bounce screen, a discharge hopper, a blanking hopper, a bag breaking machine, an air conveying system and a lifter, wherein the bounce screen is arranged on the rack; when the garbage can is in work, the garbage can filled with household garbage is fixed on the lifting trolley, the lifting mechanism lifts the garbage can to the upper part of the bag breaking machine and dumps the garbage into the garbage can, the household garbage falls onto the bounce screen after being broken by the bag breaking machine, and the bounce screen moves light objects such as plastic bags, paper and the like upwards by means of a fan and falls into the special garbage can through the blanking hopper; screening the small-particle materials by a bouncing sieve, collecting the small-particle materials by a blanking hopper, and dropping the small-particle materials into a special garbage can; large objects such as plastic bottles are moved downward and dropped onto a conveyor belt for sorting recyclable items. In general, the invention has ingenious conception and compact structure, realizes the bag breaking and pre-classification pretreatment of the household garbage, and provides an effective device for the high-efficiency and high-recovery-rate operation of an intelligent sorting system.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram provided by the present invention.

FIG. 1 is a front view of an intelligent sorting pretreatment device for household garbage according to the present invention;

FIG. 2 is a front view of the pop-up screen of the present invention;

FIG. 3 is a schematic view of a bouncing screen deck and a drive unit of the present invention;

FIG. 4 is a front view of the drop hopper of the present invention;

FIG. 5 is a front view of the bag breaker of the present invention;

FIG. 6 is a top view of the bag breaker of the present invention;

fig. 7 is a schematic view of the internal structure of the bag breaking machine of the present invention;

FIG. 8 is a cross-sectional view of the bag breaker of the present invention;

FIG. 9 is a front view of the air delivery system of the present invention;

FIG. 10 is a view of the air handling system M of the present invention in the orientation shown;

FIG. 11 is a cross-sectional view of the air delivery system of the present invention;

FIG. 12 is a front view of the hoist of the present invention;

fig. 13 is a left side view of the hoist of the present invention;

FIG. 14 is a front view of the lift car of the present invention;

FIG. 15 is a left side view of the lift car of the present invention;

fig. 16 is a cross-sectional view of the lift car of the present invention.

Description of the labeling: 1-a frame;

2-bouncing sieve; 201-wind cabin; 202-a screen body; 203-wind screen; 204-a bearing seat; 205-eccentric bearing; 206-a drive shaft; 207-a bearing; 208-a motor reducer; 209-a screen deck assembly; 210-a wind deflector; 211-a driven shaft; 212-adjusting the wind deflector; 213-support leg;

3-discharging hopper;

4-a blanking hopper; 401-a first undersize hopper; 402-a second undersize hopper; 403-third undersize hopper; 404-light material hopper;

5-bag breaking machine; 501-a box body; 502-a drum; 503-a bearing; 504-stationary knife fixing plate; 505-moving blade; 506-main fixed knife; 507-auxiliary knife; 508-a speed reducer;

6-an air conveying system; 601-a fan; 602-return air duct; 603-air duct mounting seats; 604-a separation tank; 605-an air blowing nozzle; 606-an air inlet pipe; 607-regulating valve;

7-a hoisting machine; 701-lifting the frame; 702-a pulley; 703-a pulley mount; 704-steel wire;

705-lifting the trolley; 7051-frame, 7052-first roller, 7053-hanging rack, 7054-second roller, 7055-thrust rack, 7056-tension spring, 7057-third roller, 7058-baffle;

706-a wire rope fixing component; 707-a buffer; 708-micro elevator.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the embodiment of the invention discloses an intelligent sorting pretreatment system for household garbage, which comprises a rack 1, a bounce screen 2, a discharge hopper 3, a blanking hopper 4, a bag breaking machine 5, a feed hopper 6 and a lifter 7, wherein the bounce screen 2 is obliquely arranged and connected to the rack 1; the bag breaking machine 5 is arranged on the bounce screen 2, and a feeding hopper 6 is arranged above the bag breaking machine 5; the hoister 7 is vertically fixed on the outer side of the frame 1 and is arranged at the front ends of the bounce screen 2 and the bag breaking machine 5; go out hopper 3 and connect in the left bottom of bounce screen 2, pneumatic conveying system 6 sets up on 2 right sides of bounce screen, and blanking fill 4 passes through bolted connection on the frame roof beam of 2 below the bounce screen on a hopper right side, including first undersize hopper 401, second undersize hopper 402, third undersize hopper 403 and light material hopper 404 that arrange in proper order, in hopper 3 was stretched into to first undersize hopper 401 left side mouth.

Specifically, 7 frame sprags of lifting machine set up the connecting hole site and pass through bolted connection with the connecting plate that 5 frames of bag-breaking machine set up, and the downside sets up the connecting plate in 7 frames of lifting machine and passes through bolted connection with frame 1.

As shown in fig. 2-3, the bounce screen 2 includes an air bin 201, a screen body 202, a wind screen 203, a bearing seat 204, an eccentric bearing 205, a driving shaft 206, a bearing 207, a motor reducer 208, a screen plate assembly 209, an air deflector 210, a driven shaft 211, an adjusting wind shield 212 and a leg 213, the rest parts of the screen body 202 are closed except the connection part of a lower blanking hopper 3 connection port and an upper bag breaking machine 4, and the screen body 202 is fixed on the frame 1 by the leg 213 or a connection plate; the screen plate assembly 209 is fixed on the bearing seat 204 through 4 bolts, the outer ring of the eccentric bearing 205 is fixed in the bearing seat 204, the inner ring of the eccentric bearing 205 is fixed on the driving shaft 206 or the driven shaft 211, and the driving shaft 206 is driven by a motor through a speed reducer 208; 4 groups of wind shields 203 are arranged and respectively installed on the left end plate of the screen plate component 209 through bolts; the air deflector 210 is arranged on the upper plate of the screen body 202, and the bent short edge is arranged below the static knife fixing plate 504 of the bag breaking machine 5; one end of the adjusting wind shield 212 is adjustably mounted on the upper plate of the screen body 202 by a screw, and the left end is mounted on the inner side of the right end of the box body 501 of the bag breaking machine 5. Specifically, the sieve plate component 209 is provided with regularly distributed triangular saw teeth, so that the material advancing efficiency is improved, a plurality of rhombuses with equal gaps and same size are arranged on the sieve plate surface, the rhombuses are beneficial to quickly dropping small particles into a blanking hopper, and 4 groups of eccentric bearings 205 are spirally distributed on the driving shaft 206 and the driven shaft 210, so that 4 groups of sieve plates can realize the effect of bouncing up and down; the angle of the wind shield can be changed by adjusting the wind shield 212 through the adjusting screw, so that the materials are prevented from being blown to the air return pipe 602 of the air supply system 6 by wind, and the materials can be screened more effectively.

As shown in fig. 4, the materials of the first undersize hopper 401 and the discharge hopper 3 directly fall on the conveyor belt for next-step intelligent robot sorting, and the garbage can is placed below the second undersize hopper 402, the third undersize hopper 403 and the light material hopper 404, so that the material collection is more convenient.

As shown in fig. 5, the bag breaking machine 5 includes a box 501, a roller 502, a bearing 503, a stationary knife fixing plate 504, a moving knife 505, a main stationary knife 506, an auxiliary stationary knife 507 and a speed reducer 508, wherein the roller 502 is mounted on the box 501 through the bearing 503; the movable blade 505 has 12 pieces arranged on the surface of the roller 502; the fixed knives comprise 8 groups, each 4 groups of the auxiliary knives 507 are connected and equidistantly fixed on a fixed plate 504 of the fixed knives in the box body 501 through bolts, and each 2 groups of the auxiliary knives 507 are arranged on the left side and the right side of the main fixed knife 506 through bolts; the speed reducer 508 is installed at the driving shaft end of the roller 502, and the lower end of the speed reducer is arranged on the box body through a support. Specifically, every 4 independent moving blades 505 are arranged in a row, 3 rows of the moving blades are arranged along the circumferential direction of the roller 502, the moving blades 505 in each row are uniformly distributed in a crossed manner, the rotating direction of each moving blade 505 is the same, and the moving blades are arranged with 8 groups of fixed blades in an equidistant and penetrating manner, so that the materials can be fully contacted with the blades for operation.

As shown in fig. 6, the air supply system 6 includes a blower 601, a return air duct 602, an air duct mounting seat 603, a separation box 604, an air blowing nozzle 605, an air inlet duct 606, and a regulating valve 607, wherein the blower 601 is disposed above the air bin 201 of the bounce screen 2; the left end of the air return pipe 602 is connected with an air return opening of the fan 601, the other end of the air return pipe is connected with the separation box 604, and the other end of the separation box 604 is arranged above the screen body 202 of the bounce screen 2; the air pipe mounting seat 603 fixes the return air pipe 602 on the side surface of the screen body 202 of the bounce screen 2; one end of the air inlet pipe 606 is connected with the air outlet of the fan 601, the other end of the air inlet pipe is connected with the adjusting valve 607, the air blowing nozzle 605 is connected with the other end of the adjusting valve 607, and the air blowing nozzle 605 is fixed in the air bin 201 of the bounce screen 2 through an adjusting screw rod. Specifically, 3 groups of bending baffles are crossly arranged inside the two narrow side plates of the separation box 604, so that materials are prevented from entering the return air pipe along with air; a circular plate is arranged in the regulating valve 607, and the flow of wind is controlled by changing the angle between the center of the circular plate and the valve body pipe; the air outlet of the air blowing nozzle 605 is arranged to be a flat opening, a plurality of partition plates are additionally arranged in the flat opening, the direction of the flat opening is aligned to the upper part of the sieve plate component 209 of the bounce sieve 2, so that air can be uniformly blown to materials on the sieve plate, and then the air returns to the fan 601 through the separation box 604 and the air return pipe 602 to achieve the purpose of enhancing the sieving effect by circulating air flow.

As shown in fig. 7, the hoist 7 includes a hoisting frame 701, a pulley 702, a pulley mount 703, a steel wire 704, a hoisting trolley 705, a steel wire rope fixing component 706, a buffer 707, and a micro hoist 708, the frame pulley 702 is installed in the pulley mount 703 through a bolt with a hole, the pulley mount 703 is installed in the middle of a beam above the hoisting frame 701, and 2 groups of buffers 707 are arranged above the beam; the lifting trolley 705 is arranged on the lifting frame 701 in a sliding mode, and the micro-lifting machine 708 is fixed at the position, on the other side of the lifting trolley 705, below the lifting frame 701; one end of a steel wire 704 is wound on the shaft of the micro-hoist 708, and the other end of the steel wire passes through the pulley 702 and is connected below the hoisting trolley 705 through a steel wire fixing component 706.

As shown in fig. 8, the lifting trolley 705 comprises a frame 7051, a first roller 7052, a hanging rack 7053, a second roller 7054, a thrust rack 7055, a tension spring 7056, a third roller 7057 and a baffle 7058, wherein the lifting trolley 705 comprises 4 second rollers 7054, the upper 2 of the second rollers 7054 are connected with the hanging rack 7053, the lower 2 of the second rollers 7053 are connected with the thrust rack 7055, and the second rollers 7054 are arranged in vertical supporting grooves of the frame 7051 in a rolling manner; the lifting trolley 705 comprises 4 first rollers 7052, the upper 2 of which are directly fixed above the vertical support of the frame 7051, the lower 2 of which are fixed below the thrust frame 7055, and third rollers 7057 which are arranged at 1 of the left and right 2 sides below the vertical support of the frame 7051; one end of a tension spring 7056 is connected to the hanging rack 7053, and the other end is connected to the thrust rack 7055; baffles 7058 are provided on the frame 7051 above the third roller 7057 to upstand 1 each of the left and right 2 sides. Specifically, a garbage can is arranged on the lifting trolley 705, the miniature lifting machine 708 winds and shortens the steel wire 704 to drive the lifting trolley 705 to ascend, when the 2 first rollers 7052 on the upper surface enter the guide rail at the highest bent section of the lifting rack 701, the buffer 707 damps the lifting trolley 705 and limits the movement of the lifting trolley, the third rollers 7057 rolling along the surface of the lifting rack 701 leave the rack, and the frame 7051 is vertical to the lifting rack 701.

The working process of the invention is as follows:

the garbage can filled with the household garbage is fixed on a lifting trolley, the lifting machine lifts the garbage can to the upper part of a bag breaking machine and dumps the garbage into the bag breaking machine, after the household garbage is broken by a movable knife and a fixed knife in the bag breaking machine, the material falls on a bounce sieve plate, and under the action of a fan, light objects such as plastic bags, paper and the like move upwards on the bounce sieve plate and finally fall into a special garbage can through a blanking hopper; the small particle materials fall from the sieve pores through the up-and-down movement of the sieve plates of the bouncing sieve, and the small particle materials are collected by the blanking hopper and then enter the special garbage can; 3D things such as plastic bottle move down under the action of gravity, fall on the conveyer belt from the blanking fill to follow-up intelligent robot sorts the recovery operation.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a domestic waste intelligence letter sorting pretreatment system which characterized in that: the air bag breaking machine comprises a rack (1), a bouncing sieve (2), a discharge hopper (3), a blanking hopper (4), a bag breaking machine (5), an air conveying system (6) and a lifting machine (7), wherein the bouncing sieve (2) is obliquely arranged on the rack (1), the bag breaking machine (5) is arranged on the bouncing sieve (2), and the lifting machine (7) is vertically fixed on the outer side of the rack (1) and arranged at the front ends of the bouncing sieve (2) and the bag breaking machine (5); go out hopper (3) and connect bounce sieve (2) left bottom, air-assisted system (6) set up bounce sieve (2) right side, blanking fill (4) are in through bolted connection go out the hopper right side on the frame roof beam of bounce sieve (2) below, including first undersize hopper (401), second undersize hopper (402), third undersize hopper (403) and light material hopper (404) that arrange in proper order, first undersize hopper (401) left side material mouth stretches into in ejection of compact hopper (3).

2. The intelligent household garbage sorting pretreatment system according to claim 1, characterized in that: the bag breaking machine (5) comprises a box body (501), a roller (502), a bearing (503), a static knife fixing plate (504), a movable knife (505), a fixed knife and a speed reducer (508);

the roller (502) is arranged on the box body (501) through a bearing (503), and the plurality of movable blades (505) are uniformly arranged on the surface of the roller (502); the fixed knife is composed of a main fixed knife (506) and auxiliary fixed knives (507), every 4 groups of the auxiliary fixed knives (507) are fixed on a fixed knife fixing plate (504) in the box body (501) at equal intervals through bolts, every 2 groups of the auxiliary fixed knives (507) are installed on the left side and the right side of the main fixed knife (506) through bolts, the speed reducer (508) is installed at the driving shaft end of the roller (502), and the lower end of the speed reducer is arranged on the box body (501) through a support.

3. The intelligent household garbage sorting pretreatment system according to claim 2, characterized in that: the bouncing screen (2) comprises a wind bin (201), a screen body (202), a wind screen (203), a bearing seat (204), an eccentric bearing (205), a driving shaft (206), a bearing (207), a motor speed reducer (208), a screen plate assembly (209), a wind deflector (210), a driven shaft (211), an adjusting wind deflector (212) and supporting legs (213);

the screen body (202) is of a closed structure, the bottom end of the screen body is communicated with the discharge hopper (3), and the screen body (202) is fixed on the rack (1) through supporting legs (213) or a connecting plate;

the screen plate assembly (209) is fixed on the bearing seat (204) through bolts, the outer ring of the eccentric bearing (205) is fixed in the bearing seat (204), the inner ring of the eccentric bearing (205) is fixed on the driving shaft (206) or the driven shaft (211), and the driving shaft (206) is driven by a motor through a speed reducer (208);

the wind-blocking curtains (203) are provided with 4 groups and are respectively installed on an end plate at the left end of the sieve plate component (209) through bolts; the air deflector (210) is arranged on the top plate of the screen body (202), and a bent plate of the air deflector (210) is arranged below the bag breaking machine (5);

one end of the adjusting wind shield (212) is adjustably mounted on a top plate of the screen body (202) through a screw, and the other end of the adjusting wind shield is mounted on the inner side of the right end of the box body (501) of the bag breaking machine (5).

4. The intelligent household garbage sorting pretreatment system according to claim 3, characterized in that: the air supply system (6) comprises a fan (601), a return air pipe (602), an air pipe mounting seat (603), a separation box (604), a blowing nozzle (605), an air inlet pipe (606) and an adjusting valve (607),

the fan (601) is arranged above the air bin (201), one end of the air return pipe (602) is connected with an air return opening of the fan (601), the other end of the air return pipe is connected with the separation box (604), and the bottom end of the separation box (604) is arranged above the screen body (202); the air pipe mounting seat (603) fixes the air return pipe (602) at the outer side of the screen body (202); one end of the air inlet pipe (606) is connected with an air outlet of the fan (601), the other end of the air inlet pipe is connected with the adjusting valve (607), the air blowing nozzle (605) is connected with the other end of the adjusting valve (607), and the air blowing nozzle (605) is fixed in an air bin (201) of the bounce screen (2) through an adjusting screw rod.

5. The intelligent household garbage sorting pretreatment system according to claim 1, characterized in that: the hoisting machine (7) comprises a hoisting frame (701), a pulley (702), a pulley mounting seat (703), a steel wire (704), a hoisting trolley (705), a steel wire rope fixing component (706), a buffer piece (707) and a micro hoisting machine (708),

the frame pulley (702) is installed in the pulley mounting seat (703) through a bolt, the pulley mounting seat (703) is installed in the middle of a cross beam above the lifting frame (701), and two groups of buffer pieces (707) are arranged above the cross beam; the lifting trolley (705) is arranged on the lifting frame (701) in a sliding mode, and the micro-hoister (708) is fixed below the lifting frame (701) on one side of the lifting trolley (705); one end of the steel wire (704) is wound on the shaft of the micro-hoist (708), and the other end of the steel wire passes through the pulley (702) and is connected below the hoisting trolley (705) through the steel wire rope fixing component (706).

6. The intelligent household garbage sorting pretreatment system according to claim 5, characterized in that: the lifting trolley (705) comprises a frame (7051), a first roller (7052), a hanging frame (7053), a second roller (7054), a thrust frame (7055), a tension spring (7056), a third roller (7057) and a baffle (7058), wherein 4 second rollers (7054) are symmetrically arranged on two sides of the lifting trolley (705), and the second rollers (7054) can be arranged in vertical supporting grooves of the frame (7051) in a rolling manner; the upper two second rollers (7054) are connected with the hanging rack (7053), and the lower two second rollers (7054) connect the hanging rack (7053) with the thrust rack (7055);

the two sides of the lifting trolley (705) are symmetrically provided with 4 first rollers (7052), the two first rollers (7052) at the upper part are fixed above the vertical support of the frame (7051), and the two first rollers (7052) at the lower part are fixed below the thrust frame (7055);

the two third rollers (7057) are symmetrically arranged on two sides of the bottom of the vertical support of the frame (7051), one end of the tension spring (7056) is connected to the hanging frame (7053), and the other end of the tension spring is connected to the thrust frame (7055);

the baffle (7058) is arranged above the third roller (7057) and is vertically and fixedly connected with the vertical support of the frame (7051).