CN215657025U

CN215657025U - Domestic waste sorting equipment

Info

Publication number: CN215657025U
Application number: CN202122389895.0U
Authority: CN
Inventors: 胡开明; 孙艳; 何薇; 蔡宜东; 安军妹; 何世蓉; 郭志国; 李博睿
Original assignee: Xinjiang Tianwu Ecological Environmental Protection Co ltd
Current assignee: Xinjiang Tianwu Ecological Environmental Protection Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-01-28
Anticipated expiration: 2031-09-29

Abstract

The utility model relates to the technical field of garbage sorting equipment, in particular to household garbage sorting equipment which comprises an equipment box body, wherein a feeding hole is formed in the top end of the equipment box body, a bag breaking mechanism, a solid-liquid separating mechanism, a metal separating mechanism and a winnowing mechanism are further arranged in the equipment box body, the bag breaking mechanism is installed below the feeding hole, and the solid-liquid separating mechanism, the metal separating mechanism and the winnowing mechanism are sequentially installed below the bag breaking mechanism from top to bottom. The liquid in the domestic garbage is discharged through the solid-liquid separation mechanism, the metal products in the garbage are separated through the metal separation mechanism, plastic bags, packaging bags and the like in the garbage are removed through the separation mechanism, and the garbage is divided into different categories through the multiple separation processes, so that the garbage can be conveniently treated in different treatment modes in the follow-up process.

Description

Domestic waste sorting equipment

Technical Field

The utility model relates to the technical field of garbage sorting equipment, in particular to household garbage sorting equipment.

Background

With the development of society and the increase of population, the quantity of stored domestic garbage and the quantity of generated domestic garbage are continuously increased, and serious pollution is caused to the ecological environment, so that domestic and foreign treatment modes of the domestic garbage are all targeted at harmlessness, reduction and resource, the most common treatment modes mainly comprise landfill, incineration and composting, and the three treatment modes are usually directed at different garbage types, so that the first task of the resource treatment of the domestic garbage is to effectively sort the domestic garbage to classify each component in the garbage, further to establish a powerful basic condition for realizing the recycling of various substances, and the aim of completely recycling the domestic garbage is not realized at all in reality. The reasons are manifold, but the main reason is that no effective, reliable and practical sorting equipment exists, so that most of the products cannot be recycled or used as deep processing raw materials, and therefore, the products are also required to be sent to a landfill site for landfill or incineration.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: the utility model provides a domestic waste sorting equipment to solve the problem that current rubbish sorting system can not be effectual to rubbish categorised.

The technical scheme adopted by the utility model is as follows: domestic waste sorting facilities, it includes the equipment box, the top of equipment box is provided with the feed inlet, still be provided with broken bag mechanism, solid-liquid separation mechanism, metal separating mechanism, selection by winnowing mechanism in the equipment box, broken bag mechanism installs the feed inlet below, solid-liquid separation mechanism, metal separating mechanism, selection by winnowing mechanism from top to bottom install respectively in proper order broken bag mechanism below.

The principle of the utility model is that household garbage enters sorting equipment from a feed inlet at the top end of an equipment box body, firstly, a garbage bag is cut through a bag breaking mechanism, then the garbage in the garbage bag can fall on a solid-liquid separation mechanism, moisture in the garbage is separated and discharged through the solid-liquid separation mechanism, the remaining solid waste further falls in a metal separation mechanism, metal products in the garbage are separated, and finally, plastic bags, packing paper, plastic packing boxes and the like mixed in the garbage are separated through an air separation mechanism.

After the structure is adopted, liquid in the household garbage is discharged through the solid-liquid separation mechanism, metal products in the garbage are separated through the metal separation mechanism, plastic bags, packaging bags and the like in the garbage are removed through the separation mechanism, and the garbage is divided into different categories through the multiple separation processes, so that the garbage can be conveniently treated in different treatment modes in the follow-up process.

Preferably, the bag breaking mechanism comprises a blade and a bag breaking channel, the bag breaking channel is connected with the feed inlet, the blade is a circular blade and is rotatably connected in the equipment box body, the blade is connected with a first motor, and the end part of the blade extends into the inner side of the bag breaking channel. The first motor drives the blade to continuously rotate, and when garbage enters the garbage bag from the feeding port, the garbage bag drops into the bag breaking channel, and in the process of moving in the bag breaking channel, the garbage bag is cut by the rotating blade, so that the garbage bag can be cut, and the garbage in the garbage bag can drop out, and subsequent classification work is facilitated.

Preferably, a guide plate is further connected below the bag breaking channel, two guide pieces which are symmetrically arranged are arranged on the guide plate and are arranged in a herringbone mode, the top surface of each guide piece is obliquely arranged between the guide plates, and one end, close to the bag breaking channel, of each guide piece is connected with the guide plate. The deflector can lead to rubbish on the one hand, makes the motion that rubbish can be smooth to solid-liquid separation mechanism on, cushions rubbish simultaneously, prevents that rubbish from directly dropping and leading to the condition that splashes, and on the other hand, through the stirring of two guide vanes, makes the disposal bag through the guide vane from being unfolded by the gap of cutting apart, and then makes rubbish can be more smooth stand on solid-liquid separation mechanism to improve subsequent solid-liquid separation efficiency.

Preferably, the solid-liquid separation mechanism is installed below the bag breaking mechanism and comprises a separation plate obliquely arranged, a plurality of screens are arranged on the separation plate, and a sewage disc is arranged below the separation plate and connected with a sewage outlet. After the garbage falls on the solid-liquid separation mechanism, the garbage can slowly slide on the separation plate due to the inclined arrangement of the separation plate, in the sliding process of the garbage, liquid in the garbage falls through the screen, solid waste still remains on the separation plate, and the falling liquid is received by the sewage disc and finally discharged out of the equipment from the sewage outlet.

Preferably, the separation plate is further connected with a vibration assembly, the vibration assembly comprises a guide shaft, a guide block and a second motor, the rotary table is installed at the output end of the second motor, a connecting plate is connected to the eccentric position of the rotary table, the connecting plate is connected with the separation plate, the guide shaft is fixedly connected to the inside of the equipment box, the guide block is fixedly connected to the lower portion of the separation plate, and the guide block is slidably connected to the guide shaft. The vibration assembly drives the turntable to rotate through the second motor, the connecting plate connected to the eccentric position of the turntable moves along with the turntable to drive the separating plate to reciprocate, and meanwhile, the guide block fixedly connected to the bottom of the separating plate is in sliding connection with the guide shaft to guide the movement of the separating plate, so that the separating plate can only perform linear movement along the arrangement direction of the guide shaft, and the stability of the reciprocating movement of the separating plate is ensured; the vibration assembly drives the separation plate to vibrate, so that garbage continuously rocks on the separation plate, the garbage is spread on the separation plate more uniformly, and the separation efficiency is improved.

Preferably, the guide shaft is sleeved with an elastic piece, one end of the elastic piece abuts against the guide block, and the other end of the elastic piece abuts against the equipment box body. The setting of elastic component can cushion the motion of separation plate, avoids making separation plate or vibration subassembly damage because too big round trip impact force, and it is more smooth and easy when reseing to still enable the separation plate through the elastic component simultaneously, reduces the dead probability of separation plate card.

Preferably, the metal separating mechanism comprises a conveyor belt, a plurality of magnetic devices are arranged on the conveyor belt, the magnetic devices are electromagnets, power-on plates are arranged on two sides of the conveyor belt and connected with a power supply, and connecting pieces used for being connected with the power-on plates are arranged at two ends of each magnetic device. The rubbish that falls on the conveyer belt follows the conveyer belt and moves together, when the connecting piece at magnetic device both ends is connected with the circular telegram board, the electro-magnet circular telegram produces magnetic force, just can adsorb the ironwork in the rubbish, when the conveyer belt rotates to the gyration position, ironwork is owing to be adsorbed by the electro-magnet, then can not drop, other rubbish just can be free drop, later break off the power of electro-magnet again just can make its magnetic force disappear, and ironwork alright drop this moment, the separation of ironwork and other rubbish has been accomplished.

Preferably, the electrifying plate is U-shaped and matched with the conveyor belt, the electrifying plate is connected to one end of the conveyor belt, a first discharge port and a second discharge port are arranged below the metal separation mechanism, the first discharge port is located below the discharge end of the conveyor belt, and the second discharge port is arranged on one side, close to the conveyor belt, of the first discharge port and located below the end portion of the electrifying plate. The connecting piece of magnetic device starts when meeting with circular telegram board, and cut off the power supply when separating with circular telegram board, through such setting, make the electro-magnet of following the motion of top conveyer belt when half left side, link to each other with the circular telegram board of "U" shape automatically, adsorb ironwork, and follow the conveyer belt motion to the below when the electro-magnet, when the tip separation with "U" shape circular telegram board, ironwork then can drop automatically, make ironwork drop to the second discharge gate, and other rubbish can leave from first discharge gate.

Preferably, the winnowing mechanism comprises a fan and a third discharge hole, the fan is installed below the metal separating mechanism, the fan blows air towards the direction of the conveyor belt for discharging, and the third discharge hole is located on one side, away from the second discharge hole, of the first discharge hole. The in-process that rubbish dropped from the discharge end of conveyer belt receives the blowing that the fan lasts for plastic products such as plastic bag, plastic packaging box, disposable plastic cup that weight is lighter in the rubbish are blown, follow the direction motion of air current towards the third discharge gate, leave from the third discharge gate at last, realize the separation of light plastic products such as plastic packaging bag.

As preferred, wrapping bag separating mechanism is still installed to solid-liquid separation mechanism top, wrapping bag separating mechanism is including rotating the connection and being in cylinder on the equipment box, be provided with a plurality of couples on the cylinder, the side of cylinder still is equipped with the friction pulley, the friction pulley rotates to be connected on the equipment box, the side of friction pulley is provided with the fourth discharge gate. The packaging bag separating mechanism drives the hook to move through rotation of the roller, the hook hooks the garbage packaging bags falling on the solid-liquid separating mechanism in the rotating process, the packaging bags are pulled to move along with the rotation of the hook, garbage in the packaging bags is made to fall off from the packaging bags, and when the packaging bags move to the position of the friction wheel, the friction of the friction wheel is received, the packaging bags are separated from the hook, and the packaging bags are thrown to a fourth discharge port in the rotating process of the following friction wheel and are collected and processed through the fourth discharge port.

Drawings

Fig. 1 is a schematic sectional view showing the construction of a domestic waste sorting apparatus according to embodiment 1 of the present invention.

FIG. 2 is a schematic view of the structure along the direction "A-A" in FIG. 1.

FIG. 3 is a schematic view of the structure along the direction "B-B" in FIG. 1.

Fig. 4 is a schematic structural view in the direction "C" in fig. 1.

Fig. 5 is a schematic perspective view of the domestic waste sorting apparatus of embodiment 2 of the present invention.

Wherein, 1, the equipment box body; 1.1, a feed inlet; 1.2, a first discharge hole; 1.3, a second discharge hole; 1.4, a third discharge hole; 1.5, a fourth discharge hole; 2. a bag breaking mechanism; 2.1, a blade; 2.2, breaking a bag channel; 2.3, a guide plate; 2.4, a guide sheet; 3. a solid-liquid separation mechanism; 3.1, separating the plates; 3.2, a sewage disc; 3.3, a guide shaft; 3.4, a guide block; 3.5, a second motor; 3.6, connecting plates; 3.7, an elastic piece; 4. a metal separation mechanism; 4.1, a conveyor belt, 4.2 and a magnetic device; 4.3, electrifying the plate; 4.4, connecting pieces; 5. a fan; 6. a package bag separating mechanism; 6.1, a roller; 6.2, hanging hooks; 6.3, friction wheel.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

Example 1

According to the attached drawings 1-3 in the specification, the utility model provides household garbage sorting equipment, which comprises an equipment box body 1, wherein the top end of the equipment box body 1 is provided with a feeding hole 1.1, and a bag breaking mechanism 2, a solid-liquid separation mechanism 3, a metal separation mechanism 4 and a winnowing mechanism are sequentially arranged in the equipment box body 1 from top to bottom; wherein the bag breaking mechanism 2 comprises a bag breaking channel 2.2 and a blade 2.1, the bag breaking channel 2.2 is cylindrical, the upper end of the bag breaking channel 2.2 is connected with a feed inlet 1.1, the left side of the bag breaking channel 2.2 is provided with the blade 2.1 and a first motor, the first motor drives the blade 2.1 to move, the blade 2.1 is a circular blade 2.1, the blade 2.1 extends from the outer side of the bag breaking channel 2.2 to the inner side of the bag breaking channel 2.2 and can cut bagged garbage falling down through the bag breaking channel 2.2, a guide plate 2.3 is connected below the bag breaking channel 2.2, the garbage cut through the blade 2.1 falls on the guide plate 2.3 and moves towards the solid-liquid separation mechanism 3 under the guide action of the guide plate 2.3, two guide blades 2.4 are fixedly arranged on the guide plate 2.3, the upper ends of the two guide blades 2.4 are connected to form a herringbone shape, and the guide plate 2.4 can be more uniformly spread on the guide plate 2.3, and fall on the solid-liquid separation mechanism 3 below, and in this embodiment, the top surface of the guide sheet 2.4 and the guide plate 2.3 are inclined, one end of the guide sheet 2.4 connected with the guide plate 2.3 is connected, and the other end of the guide sheet 2.4 is higher than the surface of the guide plate 2.3, so that the guide sheet 2.4 can gradually guide the garbage to enter the garbage, and the garbage is prevented from being directly divided into left and right halves rather than being flatly spread in the falling process.

The solid-liquid separation mechanism 3 is arranged below the bag breaking mechanism 2, the solid-liquid separation mechanism 3 comprises a separation plate 3.1, a sewage disc 3.2 and a vibration assembly which are obliquely arranged, the sewage disc 3.2 is arranged below the separation plate 3.1, the sewage disc 3.2 is connected with a sewage outlet, the separation plate 3.1 is connected with the vibration assembly, a screen is arranged on the separation plate 3.1, and mixed moisture in the garbage can fall through the screen and is contained by the sewage disc 3.2 below the screen and finally flows out of the sewage outlet; in this embodiment, the vibration mechanism includes two guide shafts 3.3, two guide blocks 3.4, a second motor 3.5, a connecting plate 3.6, and elastic members 3.7, the two guide shafts 3.3 are arranged in parallel in the equipment box 1 and fixedly connected with the equipment box 1 through a shaft seat, the guide blocks 3.4 are fixedly connected to the bottom of the separating plate 3.1 through a welding manner, four guide blocks 3.4 are installed and respectively matched with the two guide shafts 3.3, four elastic members 3.7 are also arranged, the elastic members 3.7 are compression springs respectively sleeved on the two guide shafts 3.3, two ends of each compression spring are respectively abutted between the guide blocks 3.4 and the equipment box 1, the second motor 3.5 is fixedly connected to the equipment box 1, an output end of the second motor 3.5 is connected with a rotary table, a connecting boss is arranged on an eccentric position of the rotary table, two ends of the connecting plate 3.6 are provided with connecting holes matched with the connecting boss, one end of the connecting plate 3.6 is connected to the connecting plate through rotation, the other end of the connecting plate 3.6 is rotatably connected to the bottom of the separating plate 3.1 through a connecting hole; when driving the carousel through second motor 3.5 and rotating, connecting plate 3.6 that is connected with the carousel just follows the carousel and moves together, and under guiding shaft 3.3 and guide block 3.4's guide effect, separation plate 3.1 can only take place to set up the ascending horizontal reciprocating motion of side along guide shaft 3.3, realize separation plate 3.1's vibration, at the in-process of separation plate 3.1 vibration, make the rubbish on the one hand on the separation plate 3.1 can be put in a stand evenly, make the separation that the liquid in the rubbish can be rapid, on the other hand also can accelerate liquid through the vibration and fall, further accelerated solid-liquid separation efficiency.

The metal separation mechanism 4 is arranged below the solid-liquid separation mechanism 3, the garbage subjected to solid-liquid separation can fall on the metal separation mechanism 4, a first discharge port 1.2 and a second discharge port 1.3 are further arranged below the metal separation mechanism 4, the metal separation mechanism 4 comprises a conveyor belt 4.1, an electrified plate 4.3, a power supply, a magnetic device 4.2 and a third motor, the conveyor belt 4.1 is horizontally arranged in the equipment box body 1 and is driven by the third motor, the magnetic device 4.2 is provided with a plurality of magnetic devices which are arranged on the conveyor belt 4.1 in parallel, the magnetic device 4.2 is an electromagnet, the end part of the electromagnet is connected with a connecting piece 4.4, the connecting piece 4.4 is used for being connected with the electrified plate 4.3 and can conduct electricity, the connecting piece 4.4 is made of a telescopic structure or an elastically deformable metal material such as an elastic stainless steel sheet, the electrified plate 4.3 is connected with the power supply, the electrified plate 4.3 is arranged on two sides of the conveyor belt 4.1, and the electrified plate 4.3 is U-shaped, and the shape of the electrified plate 4.3 is matched with the conveyor belt 4.1, the U-shaped electrified plate 4.3 is arranged at the left end of the conveyor belt 4.1, in the embodiment, the conveyor belt 4.1 rotates anticlockwise, the first discharge port 1.2 is arranged at the discharge end, namely the leftmost end, of the conveyor belt 4.1, the second discharge port 1.3 is arranged at the right side of the first discharge port 1.2, the right end of the second discharge port 1.3 is positioned at the right side of the electrified plate 4.3, when the electromagnet on the conveyor belt 4.1 moves to the position of the electrified plate 4.3, the connecting piece 4.4 is abutted against the electrified plate 4.3, so that the electromagnet is electrified, at the moment, ferrous products in the garbage can be adsorbed, when the conveyor belt 4.1 moves to the discharge end, namely the leftmost end, the ferrous products continue to move along with the conveyor belt 4.1 under the adsorption action of the electromagnet, and other garbage freely falls down to enter the first discharge port 1.2, and the ferrous products move to the end part of the electrified plate 4.3, when the connecting piece 4.4 is separated from the electrified plate 4.3, the electromagnet is powered off, and the ironwork freely falls at the moment and enters the second discharge hole 1.3, so that the separation of the ironwork and the common garbage is realized.

Winnowing mechanism is including fan 5, still be provided with third discharge gate 1.4 at the left end of first discharge gate 1.2, fan 5 installs in conveyer belt 4.1's below, blow towards third discharge gate 1.4 direction, when rubbish falls down from metal separating mechanism 4, receive fan 5 effect, make plastic bag in the rubbish, disposable plastic cup, plastic packaging box etc. light in weight's plastic products are blown the left end, and then are collected from third discharge gate 1.4 and handle, accomplish the separation of light plastic products.

The working principle is that bagged garbage enters the equipment box body 1 from the feeding hole 1.1, firstly passes through the bag breaking mechanism 2, the garbage bag is cut through the rotating blade 2.1, and falls onto the separating plate 3.1 of the solid-liquid separating mechanism 3 below through the guiding action of the guiding plate 2.3, the garbage moves towards the lower end on the separating plate 3.1, in the moving process, the separating plate 3.1 generates vibration along with the vibrating mechanism to further flatten the garbage, simultaneously, the moisture in the garbage falls into the sewage disc 3.2 and flows out, the residual solid waste falls into the metal separating mechanism 4 below, the iron products in the garbage are adsorbed and sent to the second discharging hole 1.3 through the action of the magnetic part on the conveying belt 4.1, other garbage falls from the discharging end of the conveying belt 4.1, the fan 5 blows towards the garbage in the falling process, and the light plastic garbage in the garbage is blown to the third discharging hole 1.4, and other rubbish is then discharged from first discharge gate 1.2, and then has accomplished the work of partial rubbish letter sorting, follow-up alright carry out the processing of different modes with the rubbish of different discharge gate discharges.

Example 2

According to the attached drawings 4-5 of the specification, in the embodiment, on the basis of embodiment 1, a packaging bag separating mechanism 6 is further installed above the solid-liquid separating mechanism 3, the packaging bag separating mechanism 6 comprises a roller 6.1, a friction wheel 6.3, a fourth motor and a fourth discharge hole 1.5, the friction wheel 6.3 is installed on the right side of the roller 6.1, the fourth discharge hole 1.5 is installed on the right side of the friction wheel 6.3, the roller 6.1 and the friction wheel 6.3 are driven by the fourth motor, and the roller 6.1 and the friction wheel 6.3 are connected through a reduction gear set, so that the roller 6.1 can rotate clockwise at a low speed, the friction wheel 6.3 can rotate clockwise at a high speed, a plurality of hooks 6.2 are further installed on the roller 6.1, the hooks 6.2 can move a packaging bag, an acute angle is further arranged at the end of the hook 6.2 and the packaging bag can be punctured when the packaging bag is subjected to a large pulling force; the periphery of the friction wheel 6.3 is composed of bristles, and the bristles can be in contact with the hook 6.2 in the rotating process of the friction wheel 6.3.

When the bagged garbage is acted by the bag breaking mechanism 2 to break the outer packaging bag and then falls into the solid-liquid separation mechanism 3, although the outer packaging bag is already broken, but the plastic outer packaging bag is still not taken away, or a part of garbage is in the packaging bag, so that the separation effect is poor, and the packaging bag separating mechanism 6 drives the hook 6.2 to be hung on the plastic outer packaging bag through the roller 6.1 which rotates continuously, and the outer packing bag is dragged to enable the garbage in the outer packing bag to fall off from the outer packing bag, the solid-liquid separation work can be better carried out, when the pulled outer packing bag moves to the position of the friction wheel 6.3 along with the roller 6.1, under the high-speed rotation of the friction wheel 6.3, the outer packing bag is broken and pulled from the hook 6.2 by the friction force between the friction wheel 6.3 and the outer packing bag, and then is thrown to the fourth discharge port 1.5, and is collected and processed through the fourth discharge port 1.5. Therefore, the outer packing bag can be separated and collected, and the garbage in the packing bag can quickly drop onto the solid-liquid separation mechanism 3, so that the sorting efficiency is improved.

Directional phrases used in this disclosure, such as "upper," "lower," "left," "right," and the like, refer only to the direction as illustrated with reference to fig. 1 of the specification and therefore, are used in order to better and more clearly describe and understand the present invention and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be taken as limiting the present invention.

The foregoing has described preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary, and various changes made within the scope of the independent claims of the present invention are within the scope of the present invention.

Claims

1. Domestic waste sorting facilities, it includes the equipment box, the top of equipment box is provided with the feed inlet, its characterized in that, still be provided with broken bag mechanism, solid-liquid separation mechanism, metal separating mechanism, selection by winnowing mechanism in the equipment box, broken bag mechanism installs the feed inlet below, solid-liquid separation mechanism, metal separating mechanism, selection by winnowing mechanism from top to bottom install respectively in proper order broken bag mechanism below.

2. The household garbage sorting device according to claim 1, wherein the bag breaking mechanism comprises a blade and a bag breaking channel, the bag breaking channel is connected with the feed inlet, the blade is a circular blade and is rotatably connected in the device box body, the blade is connected with a first motor, and the end part of the blade extends into the inner side of the bag breaking channel.

3. The household garbage sorting equipment according to claim 2, wherein a guide plate is further connected below the bag breaking channel, two guide pieces which are symmetrically arranged are arranged on the guide plate and are arranged in a herringbone manner, the top surface of each guide piece and the guide plate are obliquely arranged, and one end, close to the bag breaking channel, of each guide piece is connected with the guide plate.

4. The household garbage sorting device according to claim 2, wherein the solid-liquid separation mechanism is installed below the bag breaking mechanism, the solid-liquid separation mechanism comprises a separation plate which is obliquely arranged, a plurality of screen meshes are arranged on the separation plate, a sewage disc is arranged below the separation plate, and the sewage disc is connected with a sewage outlet.

5. The household garbage sorting device according to claim 4, wherein the separation plate is further connected with a vibration assembly, the vibration assembly comprises a guide shaft, a guide block and a second motor, a rotary table is mounted at an output end of the second motor, a connecting plate is connected to an eccentric position of the rotary table and connected with the separation plate, the guide shaft is fixedly connected into the device box, the guide block is fixedly connected to the lower portion of the separation plate, and the guide block is slidably connected to the guide shaft.

6. The household garbage sorting device as claimed in claim 5, wherein an elastic member is sleeved on the guide shaft, one end of the elastic member abuts against the guide block, and the other end of the elastic member abuts against the device box body.

7. The household garbage sorting device according to claim 4, wherein the metal separating mechanism comprises a conveyor belt, a plurality of magnetic devices are arranged on the conveyor belt, the magnetic devices are electromagnets, two sides of the conveyor belt are provided with electrifying plates, the electrifying plates are connected with a power supply, and two ends of each magnetic device are provided with contact switches connected with the electrifying plates.

8. The household garbage sorting device according to claim 7, wherein the electrifying plate is in a U shape matched with the conveyor belt, the electrifying plate is connected to one end of the conveyor belt, a first discharge port and a second discharge port are arranged below the metal separating mechanism, the first discharge port is located below the discharge end of the conveyor belt, and the second discharge port is arranged on one side, close to the conveyor belt, of the first discharge port and located below the end part of the electrifying plate.

9. The household garbage sorting device according to claim 8, wherein the air separation mechanism comprises a fan and a third discharge port, the fan is installed below the metal separation mechanism and blows air towards the direction of the conveyor belt discharge, and the third discharge port is located on one side of the first discharge port, which is far away from the second discharge port.

10. The household garbage sorting device according to claim 2, wherein a packaging bag separating mechanism is further installed above the solid-liquid separating mechanism, the packaging bag separating mechanism comprises a roller which is rotatably connected to the device box body, a plurality of hooks are arranged on the roller, a friction wheel is further arranged on the side face of the roller, the friction wheel is rotatably connected to the device box body, and a fourth discharging port is formed in the side face of the friction wheel.