CN111872030A

CN111872030A - Household garbage recycling method

Info

Publication number: CN111872030A
Application number: CN202010694143.2A
Authority: CN
Inventors: 李飞; 吴雨微; 谢军
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2020-11-03

Abstract

The invention relates to the technical field of garbage treatment, in particular to a household garbage recycling method, which comprises the following steps: s1, shredding: conveying the garbage to a garbage shredder through a garbage pump for shredding the garbage, wherein the length of the shredded particles is not more than 500 mm; s2, sorting: conveying the garbage shredded in the step S1 to sorting equipment for primary sorting, sorting the urban domestic garbage according to the principles of different specific gravities, different drop points, different particle sizes and different components of the crushed garbage, and separating heavy objects, light objects and light objects; s3, sorting: separating the large recoverable garbage in the heavy objects and the heavy objects in the S2, and conveying the rest organic garbage to a crusher for crushing. According to the garbage sorting machine, the arrangement of the first roller, the second roller and the second partition plate enables garbage to be subjected to two-time ejection sorting and one-time rebound sorting, so that the sorting efficiency is improved, the sorting effect is better, and the sorting is more thorough.

Description

Household garbage recycling method

Technical Field

The invention relates to the technical field of garbage treatment, in particular to a household garbage recycling method.

Background

At present, a large amount of household garbage not only seriously influences the life of people, but also hinders the development of cities, the annual output of the existing urban household garbage is close to 1.5 hundred million tons, most of the existing urban household garbage is stacked in the open air, the urban landscape and the physical health of residents are seriously influenced, and meanwhile, the household garbage is also a resource, and part of the household garbage can be recycled. Therefore, the treatment of the domestic garbage should have the aims of harmlessness, resource utilization and reduction.

As is well known, the components of the household garbage are very complex, the space-time difference is large, and the treatment difficulty is large. The domestic garbage treatment method mainly comprises incineration, landfill, compost and the like. If the domestic garbage is directly incinerated without being sorted, the fire grate is easily damaged, pollution gas is generated, and tail gas emission is influenced; if the garbage is directly buried or composted, a lot of precious resources are wasted, and many complex components in the household garbage cannot be effectively degraded, so that the aim of effective treatment is difficult to achieve. Therefore, it is necessary to subject the domestic waste to pretreatment such as sorting before incineration, landfill, and composting.

Chinese patent (2010101649514) discloses a garbage winnowing device, which comprises a pretreatment unit and a winnowing unit, wherein the pretreatment unit comprises a feeding belt, a magnetic separator and a crusher, the winnowing unit comprises a feeding belt, a dust removing filter cylinder, a first circulating fan, a winnowing chamber, an air return pipeline, a first roller, a second circulating fan, a heavy material storage bin, a medium and heavy material storage bin and a light material storage bin. The separation method can guide the heavy and medium materials and the light materials to corresponding recovery areas respectively through the matching of air separation and bounce separation, and further realizes the separation of the heavy materials, the heavy and medium materials and the light materials, but has the following defects: 1) the fan of the air separation has to blow medium and heavy substances and light substances, so that the power consumption is high, and noise and a large amount of dust are easily generated to cause pipeline blockage; 2) the existing bounce sorting device can only sort garbage in one step, so that the sorting efficiency is low, the sorting effect is not ideal, and the phenomenon of incomplete sorting often occurs.

The domestic garbage recycling method is designed for the company, so that garbage can be subjected to twice ejection sorting and once rebound sorting through the arrangement of the first roller, the second roller and the second partition plate, the sorting efficiency is improved, the sorting effect is better, and the sorting is more thorough.

Disclosure of Invention

In order to make up for the defects of the prior art and solve the problems of low separation efficiency and unsatisfactory separation effect in the prior art, the invention provides a domestic garbage recycling method.

The technical scheme adopted by the invention for solving the technical problems is as follows: a household garbage recycling method comprises the following steps:

s1, shredding: conveying the garbage to a garbage shredder through a garbage pump for shredding the garbage, wherein the length of the shredded particles is not more than 500 mm;

s2, sorting: conveying the garbage shredded in the step S1 to sorting equipment for primary sorting, sorting the urban domestic garbage according to the principles of different specific gravities, different drop points, different particle sizes and different components of the crushed garbage, and separating heavy objects, light objects and light objects;

s3, sorting: separating the large recoverable garbage in the heavy objects and the heavy objects in the S2, and conveying the rest organic garbage to a crusher for crushing;

s4, flotation: respectively conveying the light objects and the light objects in the S2 to a water separation pool, utilizing the buoyancy of water, sinking the solid garbage at the water bottom, floating the plastic garbage and the foam garbage on the water surface, screening and classifying, and conveying the rest organic garbage to a crusher for crushing after drying;

s5, sterilizing the organic garbage obtained after sorting the S3 and floating the S4, adding fertilizer, mixing and stirring, and composting;

the sorting equipment comprises a sorting box, a plurality of supporting frames are fixedly arranged below the sorting box, a feeding channel communicated with an inner cavity of the sorting box is arranged at the upper end of the sorting box, and a first roller is arranged right below the feeding channel; a first partition plate which is vertically arranged is arranged at the bottom of the inner cavity of the sorting box under the first roller; a second partition plate which is vertically arranged is arranged at the top of the inner cavity of the sorting box on the right side of the first roller, and a second roller is arranged under the second partition plate; the first roller and the second roller rotate clockwise and are arranged along the front-back direction, and the first roller and the second roller are connected with external driving equipment through a transmission assembly; first baffle, second baffle, first cylinder and second cylinder divide into relatively independent first chamber, second chamber and third chamber from left to right in proper order with the inner chamber of separation box, first chamber bottom is provided with first blanking mouth, second chamber bottom is close to first baffle one side and is provided with the second blanking mouth, it is provided with the third blanking mouth to keep away from second cylinder one side in third chamber bottom.

When the garbage discharging device is used, garbage enters from the feeding channel and falls above the first roller through the feeding channel, the clockwise rotation of the first roller can drive the garbage to move horizontally rightward, and the larger the weight of the garbage is, the larger the inertia of the garbage is, the more difficult the movement direction of the garbage is to be changed, so that a heavy object can directly fall into the first cavity from the left side of the first roller without changing the direction basically and is discharged from the first discharging port, and a heavy object falls into the second cavity along with being thrown rightwards for a short distance and is discharged from the second discharging port; a small amount of heavy objects mixed with the residual garbage are continuously thrown rightwards under the belt of the first roller and rebound after impacting on the second partition plate, and at the moment, because the inertia of the heavy objects is large and the speed after rebound is higher than that of light objects, the ejection distance is long, and the small amount of heavy objects mixed with the heavy objects can be thrown leftwards for a long distance, fall into the second cavity and are discharged from the second discharging port; the remaining light objects fall into the second roller, fall into the third cavity after being ejected and are discharged from the third blanking port, so that the garbage is ejected and sorted twice and rebounded and sorted once, the sorting efficiency is improved, the sorting effect is better, and the sorting is more thorough.

Preferably, the left side of the upper part of the sorting equipment is provided with an air inlet which is perpendicular to the feeding channel, the air inlet is communicated with the feeding channel, and an axial flow fan is fixedly arranged in the air inlet; a first air flow channel which is highly matched with the air inlet is correspondingly arranged in the sorting box on the right side of the feeding channel, the first air flow channel is communicated from left to right, and a collecting tank with an opening at the upper end is arranged on the left side of the lower end of the first air flow channel; and a filter screen is arranged in the first air flow passage on the right side of the collecting tank, and the right side of the first air flow passage is communicated with an external dust collecting bag through an exhaust pipe. The arrangement of the axial flow fan can carry out primary air flow sorting before ejection sorting and rebound sorting of garbage, and the villus garbage, the foam garbage, the film garbage and the dust in the garbage are preferentially sorted, the villus garbage, the foam garbage and the film garbage are intercepted by the filter screen and collected in the collecting tank, and the dust is collected into an external collecting bag through the exhaust pipe; the garbage can be recycled to generate economic benefit, and the problem that the garbage easily obstructs ejection of solid particles in the garbage to influence normal ejection sorting is solved, so that the sorting effect is better, and the sorting is more thorough; meanwhile, most of dust can be separated and transported out in advance, and the situation that dust pollution is caused due to the fact that a large amount of dust is discharged from the first blanking port, the second blanking port or the third blanking port along with separated garbage is avoided; in addition, the axial flow fan can also apply a rightward force to solid particles in the garbage at the lower part of the feeding channel, so that the solid particles impact the side wall at the lower part of the feeding channel to perform rebound separation, and the separation effect is further improved; the axial flow fan only needs to blow and sort the extremely light villus garbage, foam garbage or film garbage, so that larger power is not needed, the power consumption is low, and the energy conservation and the environmental protection are realized.

Preferably, a crushing roller rotating anticlockwise is arranged on the right side in the feeding channel, and the crushing roller is installed in the front-back direction and is arranged higher than the air inlet. On the one hand, the crushing roller can be broken rubbish and carry out the initiative feeding, avoid rubbish to block up feedstock channel, also improve the separation effect simultaneously, on the other hand, the crushing roller can force rubbish to move to air inlet one side, make rubbish have a same initial position, avoid initial position nonconformity to lead to selecting separately the poor problem of effect, and simultaneously, make the inlet channel upper end be in a relative confined state when the crushing roller moves, consequently, axial fan separated dust is difficult for following feedstock channel upper end and discharges, consequently, reduce dust pollution.

Preferably, the right side of the first air flow channel is communicated with the exhaust pipe through a second air flow channel, and the inner diameter of the second air flow channel is smaller than that of the first air flow channel; the first air flow channel is communicated with the upper part of the second cavity through a first air guide hole, and the second air flow channel is communicated with the upper part of the third cavity through a second air guide hole. Through the arrangement of the first air guide hole and the second air guide hole, negative pressure can be generated in the first air guide hole and the second air guide hole when airflow flows in the first airflow channel and the second airflow channel, so that negative pressure is generated in the second cavity and the third cavity, dust generated during sorting can be sucked, and pollution caused by overflow of the dust is avoided; meanwhile, the inner diameter of the second airflow channel is smaller than that of the first airflow channel, the flow velocity in the second airflow channel is larger, and the negative pressure in the second airflow channel is also larger, so that the negative pressure in the third cavity is larger, namely the pressure in the first cavity, the pressure in the second cavity and the pressure in the third cavity are sequentially reduced, the transverse movement of the garbage in the sorting box is facilitated, the ejection amplitude of the garbage is improved, and the sorting is more thorough.

Preferably, the second roller is provided with a semi-annular magnet with a central angle of 180-210 degrees, an arc-shaped cover is sleeved outside the second roller, and a guide plate which is obliquely arranged is fixedly arranged on the left side of the arc-shaped cover; the arc-shaped cover and the second roller are concentrically arranged, the upper right side of the arc-shaped cover is provided with an opening, a first through hole is formed right below the arc-shaped cover, and a fourth blanking port matched with the first through hole is formed in the bottom of the second cavity right below the first through hole; the lower end of the guide plate is fixedly connected with the bottom of the second cavity through a third partition plate, and the third partition plate is positioned between the third blanking port and the fourth blanking port; the magnetic material blanking pipe is vertically arranged on the right side of the arc cover, and the upper end of the magnetic material blanking pipe is close to the opening of the arc cover. Because the garbage often contains more magnetic materials, when the garbage is large like a heavy object and a medium-weight object, the garbage can be generally rejected in a sorting mode, and when the magnetic materials are small, the garbage is difficult to sort, the second roller is provided with the magnet, so that when the magnetic materials pass through the second roller, the magnetic materials are ejected in a short distance due to the attraction of the magnet and are separated from the light objects, and the collection and discharge recovery of the magnetic material blanking pipe are realized; when the magnetic material is actually analyzed, a plurality of magnetic materials are wrapped in the light objects, the light objects contain the magnetic materials, so the light objects can be rotated by the second roller and carried to the right side of the second roller without falling down along with the medium weight, meanwhile, the ejection distance of the light objects is shorter because the light objects are finally arranged in the magnetic materials, the light objects containing the magnetic materials can be collected through the arc-shaped cover, the light objects flow clockwise along the rotation of the second roller in the drainage channel, the light objects are separated from the magnetic materials due to extrusion vibration in the period, the light objects are further discharged from the first through hole and the fourth blanking hole, and the rest magnetic materials continue to move along the drainage channel and participate in subsequent ejection separation and fall into the magnetic material blanking pipe, so the purpose of sorting the light objects and the magnetic materials is achieved.

Preferably, a U-shaped frame is arranged below the first through hole of the arc-shaped cover, a right side plate of the U-shaped frame is fixed to the lower side of the arc-shaped cover, and a second through hole which is positioned right below the first through hole is arranged on a bottom plate of the U-shaped frame; the left side plate of the U-shaped frame is of a cantilever structure, is positioned between the arc-shaped cover and the third partition plate, and the end part of the left side plate of the U-shaped frame is close to the guide plate; and gaps among the third partition plate, the arc-shaped cover, the guide plate and the third partition plate form an overflowing gap. Because the light objects are crushed to a certain extent by extrusion vibration, a large amount of dust can be generated at the throwing port of the light objects from the first through hole, so that the kinetic energy of the light objects can be buffered and consumed by the arrangement of the U-shaped frame and the overflowing gap, the blanking speed of the light objects at the fourth blanking port is reduced, and the dust is reduced.

The invention has the following beneficial effects:

1. according to the household garbage recycling method, the arrangement of the first roller, the second roller and the second partition plate enables garbage to be subjected to two-time ejection sorting and one-time rebound sorting, so that the sorting efficiency is improved, the sorting effect is better, and the sorting is more thorough.

2. According to the household garbage recycling method, the pollution caused by dust overflow can be reduced through the arrangement of the axial flow fan, the first airflow channel and the second airflow channel, the sorting effect is improved, the power consumption is low, and the method is energy-saving and environment-friendly.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is a perspective view of a sort bin used in the present invention;

FIG. 3 is a cross-sectional view of a sort bin used in the present invention;

FIG. 4 is an enlarged view of a portion of the invention at A in FIG. 3;

in the figure:

the device comprises a separation box 1, a support frame 11, a feeding channel 12, an exhaust pipe 13, an air inlet 14, a first blanking port 15, a second blanking port 16, a fourth blanking port 17, a magnetic material blanking pipe 18, a third blanking port 19, an axial flow fan 2, a crushing roller 3, a first air flow channel 4, a collecting tank 41, a filter screen 42, a second air flow channel 43, a first air guide hole 44, a second air guide hole 45, a first roller 5, a first partition plate 6, a second partition plate 7, a second roller 8, a magnet 81, an arc-shaped cover 9, a flow guide channel 91, a first through hole 92, a U-shaped frame 93, a second through hole 94, an overflowing gap 95, a third partition plate 96 and a flow guide plate 97.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 4, a method for recycling household garbage includes the following steps:

the separation equipment comprises a separation box 1, a plurality of support frames 11 are fixedly arranged below the separation box 1, a feeding channel 12 communicated with an inner cavity of the separation box 1 is arranged at the upper end of the separation box 1, and a first roller 5 is arranged right below the feeding channel 12; a first partition plate 6 which is vertically arranged is arranged at the bottom of the inner cavity of the sorting box 1 right below the first roller 5; a second partition plate 7 which is vertically arranged is arranged at the top of the inner cavity of the sorting box 1 on the right side of the first roller 5, and a second roller 8 is arranged under the second partition plate 7; the first roller 5 and the second roller 8 rotate clockwise and are arranged along the front-back direction, and the first roller 5 and the second roller 8 are connected with external driving equipment through a transmission assembly; first baffle 6, second baffle 7, first cylinder 5 and second cylinder 8 divide into first chamber, second chamber and the third chamber relatively independent from left to right in proper order with the inner chamber of separation box 1, first chamber bottom is provided with first blanking mouth 15, second chamber bottom is close to first baffle 6 one side and is provided with second blanking mouth 16, it is provided with third blanking mouth 19 to keep away from second cylinder 8 one side to keep away from the third chamber bottom.

When the garbage discharging device is used, garbage enters from the feeding channel 12 and falls above the first roller 5 through the feeding channel 12, at the moment, the clockwise rotation of the first roller 5 can drive the garbage to move horizontally and rightwards, as the larger the weight of the garbage is, the larger the inertia of the garbage is, the more difficult the movement direction of the garbage is to be changed, the heavy objects basically do not change the direction and directly fall into the first cavity from the left side of the first roller 5 and are discharged from the first discharging port 15, and the heavy objects which are deflected to the right fall into the second cavity after being thrown out to the right for a short distance and are discharged from the second discharging port 16; a small amount of heavy objects mixed with the residual garbage are continuously thrown rightwards under the belt of the first roller 5 and then impact on the second partition plate 7 to bounce, and at the moment, because the inertia of the heavy objects is large and the speed after bouncing is higher than that of light objects, the ejection distance is long, and the small amount of heavy objects mixed with the heavy objects can be thrown leftwards for a long distance, fall into the second cavity and are discharged from the second discharging port 16; the remaining light objects fall into the second roller 8, fall into the third cavity after being ejected and are discharged from the third blanking port 19, so that the garbage is subjected to two-time ejection sorting and one-time rebound sorting, the sorting efficiency is improved, the sorting effect is better, and the sorting is more thorough.

As an embodiment of the invention, the left side of the upper part of the sorting equipment is provided with an air inlet 14 which is vertically arranged with a feed channel 12, the air inlet 14 is communicated with the feed channel 12, and the interior of the air inlet 14 is fixedly provided with an axial flow fan 2; a first air flow channel 4 which is highly matched with the air inlet 14 is correspondingly arranged in the sorting box 1 on the right side of the feeding channel 12, the first air flow channel 4 is communicated from left to right, and a collecting tank 41 with an opening at the upper end is arranged on the left side of the lower end of the first air flow channel 4; a filter screen 42 is arranged in the first air flow passage 4 on the right side of the collecting tank 41, and the right side of the first air flow passage 4 is communicated with an external dust collecting bag through an exhaust pipe 13. The arrangement of the axial flow fan 2 can perform primary air flow sorting before ejection sorting and rebound sorting of garbage, so that the villous garbage, the foam garbage, the film garbage and the dust in the garbage are preferentially sorted, the villous garbage, the foam garbage and the film garbage are intercepted by the filter screen 42 and collected in the collecting tank 41, and the dust is collected into an external collecting bag through the exhaust pipe 13; the garbage can be recycled to generate economic benefit, and the problem that the garbage easily obstructs ejection of solid particles in the garbage to influence normal ejection sorting is solved, so that the sorting effect is better, and the sorting is more thorough; meanwhile, most of dust can be separated and transported out in advance, and the situation that dust pollution is caused due to the fact that a large amount of dust is discharged from the first blanking port 15, the second blanking port 16 or the third blanking port 19 along with separated garbage is avoided; in addition, the axial flow fan 2 can also apply a force to the solid particles in the garbage to the right at the lower part of the feeding channel 12, so that the solid particles impact the side wall at the lower part of the feeding channel 12 to perform rebound separation, and the separation effect is further improved; the axial flow fan 2 only needs to blow and sort the extremely light villus garbage, foam garbage or film garbage, so that larger power is not needed, the power consumption is low, and the energy conservation and the environmental protection are realized.

In one embodiment of the present invention, a crushing roller 3 rotating counterclockwise is provided inside the feed channel 12 on the right side, and the crushing roller 3 is installed in the front-rear direction and arranged higher than the air inlet 14. On the one hand, crushing roller 3 can carry out the breakage and carry out the initiative feeding to rubbish, avoid rubbish to block up feedstock channel 12, also improve the sorting effect simultaneously, on the other hand, crushing roller 3 can force rubbish to move to 14 one sides of air inlet, make rubbish have a same initial position, avoid the initial position nonconformity to lead to sorting the poor problem of effect, and simultaneously, make the inlet channel upper end be in a relative confined state when crushing roller 3 moves, consequently, the difficult discharge from feedstock channel 12 upper end of dust that axial fan 2 separated, consequently, reduce dust pollution.

As an embodiment of the present invention, the right side of the first air flow channel 4 is communicated with the exhaust pipe 13 through a second air flow channel 43, and the inner diameter of the second air flow channel 43 is smaller than that of the first air flow channel 4; the first air flow path 4 communicates with the upper part of the second chamber through a first air guide hole 44, and the second air flow path 43 communicates with the upper part of the third chamber through a second air guide hole 45. Through the arrangement of the first air guide holes 44 and the second air guide holes 45, negative pressure can be generated in the first air guide holes 44 and the second air guide holes 45 when airflow flows in the first airflow channel 4 and the second airflow channel 43, so that negative pressure is generated in the second cavity and the third cavity, dust generated in sorting can be sucked, and pollution caused by dust overflow is avoided; meanwhile, the inner diameter of the second airflow channel 43 is smaller than that of the first airflow channel 4, and the flow velocity and the negative pressure in the second airflow channel 43 are larger, so that the negative pressure in the third cavity is larger, namely the pressures in the first cavity, the second cavity and the third cavity are sequentially reduced, thereby being beneficial to the transverse movement of the garbage in the sorting box 1, improving the ejection amplitude of the garbage and enabling the sorting to be more thorough.

As an embodiment of the invention, a semi-ring magnet 81 with a central angle of 180-210 ° is arranged on the second roller 8, an arc-shaped cover 9 is sleeved outside the second roller 8, and a guide plate 97 which is obliquely arranged is fixedly arranged on the left side of the arc-shaped cover 9; the arc-shaped cover 9 and the second roller 8 are arranged concentrically, the upper right side of the arc-shaped cover is provided with an opening, a first through hole 92 is arranged right below the arc-shaped cover 9, and the bottom of a second cavity right below the first through hole 92 is provided with a fourth blanking port 17 matched with the first through hole; the lower end of the guide plate 97 is fixedly connected with the bottom of the second cavity through a third partition plate, and the third partition plate 96 is positioned between the third blanking port 19 and the fourth blanking port 17; a magnetic material blanking pipe 18 which is vertically arranged is arranged on the right side of the arc-shaped cover 9, and the upper end of the magnetic material blanking pipe 18 is close to the opening of the arc-shaped cover 9. Since the garbage often contains more magnetic materials, when the garbage is large like a heavy object and a medium-weight object, the garbage can be generally rejected in a sorting mode, and when the magnetic materials are small, the garbage is difficult to sort, the second roller 8 is provided with the magnet 81, so that when the magnetic materials pass through the second roller 8, the magnetic materials are separated from the light objects due to the short ejection distance caused by the attraction of the magnet 81, and the magnetic material falling pipe 18 is collected, discharged and recycled; when the magnetic material is actually analyzed, a lot of magnetic material is wrapped in the light object, the light object can be rotated by the second roller 8 and carried to the right side of the second roller without falling along with the medium-weight object due to the magnetic material, meanwhile, the ejection distance of the light object is shorter due to the fact that the light object is finally arranged on the magnetic material, the light object containing the magnetic material can be collected through the arc-shaped cover 9, the light object flows clockwise along the rotation of the second roller 8 in the drainage channel 91, the light object is separated from the magnetic material due to extrusion vibration in the period, the light object is further enabled to fall from the first through hole 92 and is discharged through the fourth blanking port 17, and the residual magnetic material continuously moves along the drainage channel 91 and is ejected to participate in subsequent separation and fall into the magnetic material blanking pipe 18, so that the purpose of sorting the light object and the magnetic material is achieved.

As an embodiment of the present invention, a U-shaped frame 93 is disposed below the first through hole 92 of the arc-shaped cover 9, a right side plate of the U-shaped frame 93 is fixed to the lower side of the arc-shaped cover 9, and a bottom plate of the U-shaped frame 93 is provided with a second through hole 94 located right below the first through hole 92; the left side plate of the U-shaped frame 93 is of a cantilever structure, the left side plate of the U-shaped frame 93 is positioned between the arc-shaped cover 9 and the third partition plate 96, and the end part of the left side plate is close to the guide plate 97; the third partition plate 96, the arc cover 9, the baffle 97 and the third partition plate 96 form a flow passage gap 95. Because the light objects are crushed to a certain extent by extrusion and vibration, a large amount of dust is generated at the throwing outlet of the first through hole 92, so that the kinetic energy of the light objects can be buffered and consumed by the arrangement of the U-shaped frame 93 and the overflowing gap 95, the blanking speed of the light objects at the fourth blanking port 17 is reduced, and the dust is reduced.

When the garbage discharging device is used, garbage enters from the feeding channel 12 and falls above the first roller 5 through the feeding channel 12, at the moment, the clockwise rotation of the first roller 5 can drive the garbage to move horizontally and rightwards, as the larger the weight of the garbage is, the larger the inertia of the garbage is, the more difficult the movement direction of the garbage is to be changed, the heavy objects basically do not change the direction and directly fall into the first cavity from the left side of the first roller 5 and are discharged from the first discharging port 15, and the heavy objects which are deflected to the right fall into the second cavity after being thrown out to the right for a short distance and are discharged from the second discharging port 16; a small amount of heavy objects mixed with the residual garbage are continuously thrown rightwards under the belt of the first roller 5 and then impact on the second partition plate 7 to bounce, and at the moment, because the inertia of the heavy objects is large and the speed after bouncing is higher than that of light objects, the ejection distance is long, and the small amount of heavy objects mixed with the heavy objects can be thrown leftwards for a long distance, fall into the second cavity and are discharged from the second discharging port 16; the rest light objects fall into the second roller 8, fall into the third cavity after being ejected and are discharged from the third blanking port 19, so that the garbage is subjected to two-time ejection sorting and one-time rebound sorting, the sorting efficiency is improved, the sorting effect is better, and the sorting is more thorough; the arrangement of the axial flow fan 2 can perform primary air flow sorting before ejection sorting and rebound sorting of garbage, so that the villous garbage, the foam garbage, the film garbage and the dust in the garbage are preferentially sorted, the villous garbage, the foam garbage and the film garbage are intercepted by the filter screen 42 and collected in the collecting tank 41, and the dust is collected into an external collecting bag through the exhaust pipe 13; the garbage can be recycled to generate economic benefit, and the problem that the garbage easily obstructs ejection of solid particles in the garbage to influence normal ejection sorting is solved, so that the sorting effect is better, and the sorting is more thorough; meanwhile, most of dust can be separated and transported out in advance, and the situation that dust pollution is caused due to the fact that a large amount of dust is discharged from the first blanking port 15, the second blanking port 16 or the third blanking port 19 along with separated garbage is avoided; in addition, the axial flow fan 2 can also apply a force to the solid particles in the garbage to the right at the lower part of the feeding channel 12, so that the solid particles impact the side wall at the lower part of the feeding channel 12 to perform rebound separation, and the separation effect is further improved; the axial flow fan 2 only needs to blow and sort extremely light villus garbage, foam garbage or film garbage, so that higher power is not needed, the power consumption is low, and the energy is saved and the environment is protected; on one hand, the crushing roller 3 can crush the garbage and actively feed the garbage, so that the garbage is prevented from blocking the feeding channel 12, and meanwhile, the sorting effect is improved, on the other hand, the crushing roller 3 can force the garbage to move to one side of the air inlet 14, so that the garbage has the same initial position, the problem of poor sorting effect caused by inconsistent initial positions is avoided, and meanwhile, the upper end of the inlet channel is in a relatively closed state when the crushing roller 3 acts, so that the dust separated by the axial flow fan 2 is not easily discharged from the upper end of the feeding channel 12, and the dust pollution is reduced; through the arrangement of the first air guide holes 44 and the second air guide holes 45, negative pressure can be generated in the first air guide holes 44 and the second air guide holes 45 when airflow flows in the first airflow channel 4 and the second airflow channel 43, so that negative pressure is generated in the second cavity and the third cavity, dust generated in sorting can be sucked, and pollution caused by dust overflow is avoided; meanwhile, the inner diameter of the second airflow channel 43 is smaller than that of the first airflow channel 4, and the flow velocity and the negative pressure in the second airflow channel 43 are larger, so that the negative pressure in the third cavity is larger, namely the pressures in the first cavity, the second cavity and the third cavity are sequentially reduced, thereby being beneficial to the transverse movement of the garbage in the sorting box 1, improving the ejection amplitude of the garbage and enabling the sorting to be more thorough; since the garbage often contains more magnetic materials, when the garbage is large like a heavy object and a medium-weight object, the garbage can be generally rejected in a sorting mode, and when the magnetic materials are small, the garbage is difficult to sort, the second roller 8 is provided with the magnet 81, so that when the magnetic materials pass through the second roller 8, the magnetic materials are separated from the light objects due to the short ejection distance caused by the attraction of the magnet 81, and the magnetic material falling pipe 18 is collected, discharged and recycled; when the magnetic material is actually analyzed, a lot of magnetic material is wrapped in the light object, the light object can be rotated by the second roller 8 and brought to the right side of the second roller without falling along with the medium weight because of the magnetic material, meanwhile, the ejection distance of the light object is shorter because of the magnetic material, the light object containing the magnetic material can be collected through the arc-shaped cover 9, the light object flows clockwise along the rotation of the second roller 8 in the drainage channel 91, the light object is separated from the magnetic material due to extrusion vibration in the period, the light object is further enabled to fall from the first through hole 92 and is discharged through the fourth blanking hole 17, and the residual magnetic material continues to move along the drainage channel 91 and is ejected to participate in subsequent separation and falls into the magnetic material blanking pipe 18, so that the purpose of sorting the light object and the magnetic material is achieved; because the light objects are crushed to a certain extent by extrusion and vibration, a large amount of dust is generated at the throwing outlet of the first through hole 92, so that the kinetic energy of the light objects can be buffered and consumed by the arrangement of the U-shaped frame 93 and the overflowing gap 95, the blanking speed of the light objects at the fourth blanking port 17 is reduced, and the dust is reduced.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A domestic garbage recycling method is characterized in that: the method comprises the following steps:

the sorting equipment comprises a sorting box (1), a plurality of supporting frames (11) are fixedly arranged below the sorting box (1), a feeding channel (12) communicated with an inner cavity of the sorting box (1) is arranged at the upper end of the sorting box (1), and a first roller (5) is arranged right below the feeding channel (12); a first partition plate (6) which is vertically arranged is arranged at the bottom of the inner cavity of the sorting box (1) right below the first roller (5); a second partition plate (7) which is vertically arranged is arranged at the top of the inner cavity of the sorting box (1) on the right side of the first roller (5), and a second roller (8) is arranged right below the second partition plate (7); the first roller (5) and the second roller (8) rotate clockwise and are arranged along the front-back direction, and the first roller (5) and the second roller (8) are connected with external driving equipment through a transmission assembly; first baffle (6), second baffle (7), first cylinder (5) and second cylinder (8) from left to right separate into relatively independent first chamber, second chamber and third chamber in proper order with the inner chamber of sorting box (1), first chamber bottom is provided with first blanking mouth (15), second chamber bottom is close to first baffle (6) one side and is provided with second blanking mouth (16), it is provided with third blanking mouth (19) to keep away from second cylinder (8) one side to keep away from third chamber bottom.

2. The method for recycling household garbage according to claim 1, wherein the method comprises the following steps: an air inlet (14) which is perpendicular to the feeding channel (12) is formed in the left side of the upper portion of the sorting equipment, the air inlet (14) is communicated with the feeding channel (12), and an axial flow fan (2) is fixedly arranged in the air inlet (14); a first air flow channel (4) which is highly matched with the air inlet (14) is correspondingly arranged in the sorting box (1) on the right side of the feeding channel (12), the first air flow channel (4) is communicated from left to right, and a collecting tank (41) with an opening at the upper end is arranged on the left side of the lower end of the first air flow channel (4); a filter screen (42) is arranged in a first air flow channel (4) on the right side of the collecting groove (41), and the right side of the first air flow channel (4) is communicated with an external dust collecting bag through an exhaust pipe (13).

3. The method for recycling household garbage according to claim 2, characterized in that: the left side in the feeding channel (12) is provided with a crushing roller (3) rotating anticlockwise, and the crushing roller (3) is arranged in the front-back direction and is higher than the air inlet (14).

4. The method for recycling household garbage according to claim 3, wherein the method comprises the following steps: the right side of the first air flow channel (4) is communicated with the exhaust pipe (13) through a second air flow channel (43), and the inner diameter of the second air flow channel (43) is smaller than that of the first air flow channel (4); the first air flow channel (4) is communicated with the upper part of the second cavity through a first air guide hole (44), and the second air flow channel (43) is communicated with the upper part of the third cavity through a second air guide hole (45).

5. The method for recycling household garbage according to claim 4, wherein the method comprises the following steps: a semi-annular magnet (81) with a central angle of 180-210 degrees is arranged on the second roller (8), an arc-shaped cover (9) is sleeved outside the second roller (8), and a guide plate (97) which is obliquely arranged is fixedly arranged on the left side of the arc-shaped cover (9); the arc-shaped cover (9) and the second roller (8) are concentrically arranged, the right upper side of the arc-shaped cover is provided with an opening, a first through hole (92) is formed right below the arc-shaped cover (9), and a fourth blanking port (17) matched with the first through hole is formed in the bottom of the second cavity right below the first through hole (92); the lower end of the guide plate (97) is fixedly connected with the bottom of the second cavity through a third partition plate, and the third partition plate (96) is positioned between the third blanking port (19) and the fourth blanking port (17); a magnetic material blanking pipe (18) which is vertically arranged is arranged on the right side of the arc-shaped cover (9), and the upper end of the magnetic material blanking pipe (18) is close to an opening of the arc-shaped cover (9).

6. The method for recycling household garbage according to claim 5, wherein the method comprises the following steps: a U-shaped frame (93) is arranged below the first through hole (92) of the arc-shaped cover (9), the right side plate of the U-shaped frame (93) is fixed on the lower side of the arc-shaped cover (9), and a second through hole (94) which is positioned right below the first through hole (92) is arranged on the bottom plate of the U-shaped frame (93); the left side plate of the U-shaped frame (93) is of a cantilever structure, the left side plate of the U-shaped frame (93) is positioned between the arc-shaped cover (9) and the third partition plate (96), and the end part of the left side plate is close to the guide plate (97); and the third partition plate (96) and the arc cover (9), the guide plate (97) and the third partition plate (96) form an overflowing gap (95).