Fine sorting device and method for recycling disassembly waste materials of waste household appliances

Abstract

The invention relates to the technical field of waste sorting, in particular to a fine sorting device and method for waste household appliance disassembly waste recovery. The fine sorting device comprises a supporting frame, a screening mechanism is installed on the supporting frame, a filtering mechanism is installed at the bottom of the screening mechanism, a separating mechanism is installed at the bottom of the filtering mechanism, and a cleaning mechanism is installed at the bottom of the separating mechanism; through installation of the screening mechanism, separation of light chippings and heavy chippings under the action of airflow is facilitated, collection and storage are conducted through the collecting mechanism, limiting between the collecting mechanism and the screening mechanism is facilitated through installation of the locking mechanism, and meanwhile the collecting mechanism is pulled out and cleaned by driving the locking mechanism; through installation of the filtering mechanism, heavy chippings can be further filtered, the chippings are guided into the separating mechanism to be subjected to scrap iron separation after being filtered, through work of the cleaning mechanism, driving control over the separating mechanism is achieved, then the adsorbed scrap iron is scraped and discharged, and automatic cleaning is achieved.

Description

Technical Field

[0001] This invention relates to the field of waste sorting technology, specifically to a fine sorting device and method for recycling waste materials from the dismantling of old household appliances. Background Technology

[0002] With the rapid pace of product upgrades and replacements in the home appliance industry, the number of discarded appliances is increasing year by year. The waste generated after dismantling these appliances contains a large amount of recyclable materials such as metals (e.g., iron, copper, aluminum), plastics, and rubber. If these materials are not effectively separated and recycled, it will not only waste resources but also cause serious environmental pollution due to improper dumping or disposal. Therefore, efficient and precise sorting of waste materials from dismantling used home appliances is a crucial step in achieving resource recycling and environmental protection.

[0003] Currently, the recycling and sorting of waste materials from the dismantling of discarded household appliances mainly relies on traditional methods such as manual sorting, vibrating screening, magnetic separation, and air separation. These methods still have many shortcomings in practical applications:

[0004] For example, manual sorting is inefficient, labor-intensive, and has inconsistent sorting accuracy; ordinary vibrating screens are ineffective at separating lightweight film-type plastics from heavier debris, easily causing material entanglement or blockage; conventional air separation equipment experiences a significant decrease in sorting efficiency when the feed is uneven or the material moisture content is high, and lightweight debris is easily scattered by the wind, making collection difficult. Furthermore, existing magnetic separators often struggle to clean up magnetic materials such as iron filings contained in the debris, requiring manual scraping after machine shutdown, which affects continuous operation efficiency and poses certain safety hazards.

[0005] To address the aforementioned issues, the existing technology lacks a fine sorting device for waste materials from the dismantling of household appliances that can integrate multi-stage sorting (such as light material separation, particle size screening, and magnetic material adsorption), has a high degree of automation, and is easy to maintain and clean.

[0006] Therefore, there is an urgent need to design a new type of sorting equipment to solve the problems of imprecise sorting, low efficiency, poor continuity and inconvenient maintenance of existing technologies, so as to improve the overall recycling rate and resource utilization level of waste materials from the dismantling of waste household appliances. Summary of the Invention

[0007] To address the problems in the prior art, this invention provides a fine sorting device and method for recycling waste materials from the dismantling of waste household appliances.

[0008] The technical solution adopted by the present invention to solve its technical problem is: a fine sorting device for recycling waste materials from the dismantling of waste household appliances, including a support frame, a screening mechanism installed on the support frame, the screening mechanism including a housing, the housing installed on the support frame, a filtering mechanism installed at the bottom of the housing, the filtering mechanism including a guide shell, a guide shell installed at the bottom of the housing, and a separation mechanism and a cleaning mechanism installed at the bottom of the guide shell.

[0009] Specifically, a fan is installed at one end of the housing, a feed hopper is installed at the top of the housing, and a discharge port is provided at the bottom of the housing, with the bottom of the feed hopper located at the top of the discharge port.

[0010] Specifically, a ventilation screen is installed at the other end of the housing, the width of the discharge port is greater than the width of the bottom of the feed hopper, and the discharge port has a conical structure.

[0011] Specifically, the collection mechanism includes a collection box, which is slidably connected to the bottom of the other end of the housing. The top of the collection box extends to the inner side of the top of the housing, and one end of the collection box extends to the outer side of the housing. A handle is installed at one end of the collection box, and the bottom of the other end of the housing is provided with a certain slope.

[0012] Specifically, the locking mechanism includes a fixed block, and the fixed block is fixedly connected to the bottom of the other end of the housing. A handle is installed at the bottom of the fixed block, and two return springs are installed between the handle and the fixed block. Two limit rods are vertically connected to the top of the handle. The two limit rods pass through the return springs and the fixed block respectively and extend into the interior of the housing. The bottom of the collection box is provided with two slots, and the tops of the two limit rods are respectively engaged with the two slots.

[0013] Specifically, the angle between the guide shell and the bottom of the shell is 45 degrees, the top of the shell is provided with a feed inlet, the feed inlet is aligned with the discharge outlet, a screen is installed at the center of the bottom of the guide shell, and the feed inlet is located at the top of one end of the screen.

[0014] Specifically, the feed guide shell has multiple protrusions installed inside, with the protrusions located at the top of the screen. The top of the protrusions has an arc-shaped structure, and the spacing between the protrusions gradually narrows from bottom to top.

[0015] Specifically, the separation mechanism includes a feeding shell, which is installed at the center of the bottom of the guide shell. The angle between the feeding shell and the guide shell is 45 degrees. The top of the feeding shell is located at the bottom of the screen. Two mounting plates are installed on the inner side of the bottom of the feeding shell. The top side of the mounting plate is located on the inner side of the bottom of the feeding shell. Magnetic blocks are installed on the two mounting plates respectively.

[0016] Specifically, the area of ​​the magnetic block is smaller than that of the mounting plate, the top of the magnetic block is flush with the inner bottom of the material feeding shell, and connecting rods are installed on both sides of the material feeding shell, with the tops of the two connecting rods connected to the bottom of the material guiding shell.

[0017] Specifically, the cleaning mechanism includes scrapers, two scrapers are rotatably connected to one side of the discharge shell, the bottom of the scrapers abuts against the mounting plate, the angle between the scrapers and the side wall of the discharge shell is 45 degrees, the bottom of the scrapers extends to the outside of the discharge shell, and the two mounting plates are slidably connected to the bottom of the discharge shell.

[0018] Specifically, a cover is installed on one side of the discharge shell, and a discharge port is provided at the bottom of the cover. The cover is located outside the two mounting plates, one end of the two mounting plates extends to the outside of the cover, and the mounting plates are slidably connected to the bottom of the cover.

[0019] Specifically, two cylinders are installed at the bottom of the feeding shell. The two cylinders are connected to the feeding shell through multiple fixed seats. The output shafts of one end of the two cylinders are respectively connected to the center line of the bottom of the two mounting plates through connecting blocks.

[0020] An operating method for a fine sorting device for recycling waste materials from the dismantling of used household appliances includes the following steps:

[0021] S1: First, the crushed material is introduced into the inner top of the screening mechanism via a conveyor belt. The screening mechanism then works to separate light debris, especially materials such as plastic film.

[0022] S2: The separated lightweight materials will enter the collection mechanism for storage. The collection mechanism is installed stably under the control of the locking mechanism. Pulling the locking mechanism allows the collection mechanism to extract and clean the materials inside.

[0023] S3: Then the sieved fragments will continue to be fed into the filter mechanism for further filtration of impurities, and the iron filings will be removed by the separation mechanism after filtration.

[0024] S4: After the iron filings are removed, they adhere to the separation mechanism. The reciprocating operation of the cleaning mechanism is controlled to automatically scrape off and discharge the iron filings on the separation mechanism.

[0025] The beneficial effects of this invention are:

[0026] (1) The fine sorting device and method for recycling waste from the dismantling of waste household appliances described in this invention, through the installation of the screening mechanism, facilitates the separation of lighter and heavier debris by airflow, and collects and stores the debris through the collection mechanism.

[0027] (2) The fine sorting device and method for recycling waste materials from the dismantling of waste household appliances described in this invention, through the installation of the locking mechanism, facilitates the limiting of the collection mechanism and the screening mechanism, and at the same time realizes the extraction and cleaning of the collection mechanism by driving the locking mechanism.

[0028] (3) The fine sorting device and method for recycling waste from the dismantling of old household appliances described in this invention facilitates further filtration of heavier debris through the installation of a filtration mechanism, and then introduces the filtered debris into the separation mechanism for iron filings separation.

[0029] (4) The fine sorting device and method for recycling waste materials from the dismantling of waste household appliances described in this invention achieves automatic cleaning by driving and controlling the separation mechanism through the operation of the cleaning mechanism, thereby scraping off and discharging the adsorbed iron filings. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the connection structure between the material guide shell and the shell of the present invention;

[0032] Figure 3 This is a schematic diagram of the connection structure between the collection box and the shell of the present invention;

[0033] Figure 4 This is a schematic diagram of the connection structure between the feed shell and the guide shell of the present invention;

[0034] Figure 5 This is a schematic diagram of the connection structure between the screen and the guide shell of the present invention;

[0035] Figure 6 This is a schematic diagram of the connection structure between the mounting plate and the unloading shell of the present invention;

[0036] Figure 7 This is a schematic diagram of the connection structure between the cylinder and the feed shell of the present invention;

[0037] Figure 8 This is a schematic diagram of the connection structure between the discharge port and the cover of the present invention;

[0038] Figure 9 This is a schematic diagram of the connection structure between the card slot and the collection box of the present invention;

[0039] Figure 10 This is a schematic diagram of the connection structure between the handle and the fixing block of the present invention.

[0040] In the diagram: 1. Support frame; 2. Screening mechanism; 201. Shell; 202. Fan; 203. Feed hopper; 204. Ventilation screen; 205. Discharge port; 3. Collection mechanism; 301. Collection box; 302. Handle; 4. Locking mechanism; 401. Handle; 402. Slot; 403. Fixing block; 404. Limiting rod; 405. Return spring; 5. Filtering mechanism; 501. Guide shell; 502. Feed port; 503. Screen; 504. Raised bar; 6. Separation mechanism; 601. Discharge shell; 602. Connecting rod; 603. Mounting plate; 604. Magnetic block; 7. Cleaning mechanism; 701. Cover; 702. Cylinder; 703. Scraper; 704. Connecting block; 705. Fixing seat; 706. Discharge port. Detailed Implementation

[0041] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0042] like Figure 1 and Figure 4 As shown, a fine sorting device for recycling waste materials from the dismantling of waste household appliances according to the present invention includes a support frame 1, a screening mechanism 2 installed on the support frame 1, a housing 201 installed on the support frame 1, a filtering mechanism 5 installed at the bottom of the housing 201, a guide shell 501 installed at the bottom of the housing 201, a separation mechanism 6 and a cleaning mechanism 7 installed at the bottom of the guide shell 501.

[0043] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, a blower 202 is installed at one end of the housing 201, a feed hopper 203 is installed at the top of the housing 201, and a discharge port 205 is provided at the bottom of the housing 201. The bottom of the feed hopper 203 is located at the top of the discharge port 205. The installation of the housing 201 facilitates the connection of the feed hopper 203. The feed hopper 203 is used to receive crushed materials and quantitatively introduce them into the housing 201. When the blower 202 is working, it blows air into the material inside the housing 201, causing light materials, such as plastic film materials, to fly out to one side, while heavier materials are discharged through the discharge port 205 for subsequent filtration.

[0044] Specifically, such as Figure 1 , Figure 2 and Figure 3As shown, a ventilation mesh 204 is installed at the other end of the shell 201. The width of the discharge port 205 is greater than the bottom width of the feed hopper 203. The discharge port 205 has a conical structure. The installation of the ventilation mesh 204 facilitates the airflow of the blower 202 to be discharged through the end of the shell 201, so that light debris can be blown to one end of the shell 201 for easy recycling. At the same time, the widened top width of the discharge port 205 facilitates the discharge port 205 to catch the material after it is blown away by the airflow.

[0045] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 9 As shown, the collection mechanism 3 includes a collection box 301. The collection box 301 is slidably connected to the bottom of the other end of the housing 201. The top of the collection box 301 extends to the inner side of the top of the housing 201, and one end of the collection box 301 extends to the outer side of the housing 201. A handle 302 is installed at one end of the collection box 301, and the bottom of the other end of the housing 201 is provided with a certain slope. The installation of the collection box 301 facilitates the collection and storage of the blown lightweight debris. By pulling the handle 302, the collection box 301 can be pulled out, which is convenient for cleaning the debris. At the same time, the slope at the bottom of the other end of the housing 201 facilitates the inclusion of debris into the collection box 301 for storage.

[0046] Specifically, such as Figure 2 , Figure 3 , Figure 9 and Figure 10 As shown, the locking mechanism 4 includes a fixing block 403. The fixing block 403 is fixedly connected to the bottom of the other end of the housing 201. A handle 401 is installed at the bottom of the fixing block 403. Two return springs 405 are installed between the handle 401 and the fixing block 403. Two limiting rods 404 are vertically connected to the top of the handle 401. The two limiting rods 404 pass through the return springs 405 and the fixing block 403 respectively and extend into the housing 201. The bottom of the collection box 301 is provided with two slots 402, and the two limiting rods 404... 4. The top of the handle engages with two slots 402 respectively. The installation of the fixing block 403 facilitates the connection of the handle 401. Under the pull of the return spring 405, the limiting rod 404 on the handle 401 is inserted into the slot 402 at the bottom of the collection box 301, thus limiting the collection box 301 so that it cannot be pulled out. By pulling the handle 401, the handle 401 drives the limiting rod 404 to break free from the elastic force of the return spring 405 and slide. The limiting rod 404 separates from the slot 402, making it easy to pull out the collection box 301 for cleaning.

[0047] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the angle between the bottom of the guide shell 501 and the bottom of the shell 201 is 45 degrees. The top of the shell 201 is provided with a feed inlet 502, which is aligned with the discharge outlet 205. A screen 503 is installed at the center of the bottom of the guide shell 501. The feed inlet 502 is located at the top of one end of the screen 503. The installation of the guide shell 501 facilitates the connection of the screen 503. The installation of the screen 503 facilitates the reception of the material introduced into the discharge outlet 205. Since the bottom of the guide shell 501 and the shell 201 have a certain angle, the material can slide on the screen 503, thereby realizing the screening of the material and improving the screening effect.

[0048] Specifically, such as Figure 5 As shown, multiple protrusions 504 are installed inside the feed guide shell 501. The multiple protrusions 504 are located on the top of the screen 503. The top of the protrusions 504 has an arc-shaped structure, and the spacing between the multiple protrusions 504 gradually narrows from bottom to top. The installation of multiple protrusions 504 helps to reduce the material feeding speed, so that the material has a better filtration effect when passing through the screen 503. At the same time, the gradually increasing spacing between the protrusions 504 will not hinder the material feeding.

[0049] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the separation mechanism 6 includes a feeding shell 601. The feeding shell 601 is installed at the center of the bottom of the guide shell 501. The angle between the feeding shell 601 and the guide shell 501 is 45 degrees. The top of the feeding shell 601 is located at the bottom of the screen 503. Two mounting plates 603 are installed on the inner side of the bottom of the feeding shell 601. The top side of the mounting plates 603 is located on the inner side of the bottom of the feeding shell 601. Magnetic blocks 604 are installed on the two mounting plates 603 respectively. The installation of the feeding shell 601 facilitates the discharge of the broken material after being filtered by the screen 503. At the same time, the installation of the two mounting plates 603 connects the two magnetic blocks 604. The installation of the magnetic blocks 604 facilitates the adsorption of iron filings in the broken material, thus separating the iron filings from the broken material.

[0050] Specifically, such as Figure 5 and Figure 6 As shown, the area of ​​the magnetic block 604 is smaller than that of the mounting plate 603. The top of the magnetic block 604 is flush with the inner bottom of the feed shell 601. Connecting rods 602 are installed on both sides of the feed shell 601. The tops of the two connecting rods 602 are connected to the bottom of the guide shell 501, which facilitates the sliding of the scrap on the magnetic block 604 and realizes the adsorption of iron filings in the scrap. At the same time, the installation of the connecting rods 602 helps to reinforce the feed shell 601 and the guide shell 501, making the feed shell 601 stable.

[0051] Specifically, such as Figure 6 and Figure 7 As shown, the cleaning mechanism 7 includes scrapers 703. Two scrapers 703 are rotatably connected to one side of the discharge shell 601. The bottom of the scrapers 703 abuts against the mounting plate 603. The angle between the scrapers 703 and the side wall of the discharge shell 601 is 45 degrees. The bottom of the scrapers 703 extends to the outside of the discharge shell 601. The two mounting plates 603 are slidably connected to the bottom of the discharge shell 601. Through the rotatable connection of the two scrapers 703, the bottom of the scrapers 703 abuts against the mounting plate 603, and the scrapers 703 and the side wall of the discharge shell 601 have a certain angle. At a certain angle, when the mounting plate 603 moves carrying the iron filings on the magnetic block 604, the iron filings resist the rotation of the scraper 703, causing the iron filings to leak out. After all the magnetic blocks 604 on the mounting plate 603 have slid out, the mounting plate 603 is pushed into the material discharge shell 601. At this time, the scraper 703 will scrape off the iron filings on the magnetic blocks 604. When the magnetic blocks 604 have completely entered the material discharge shell 601, the iron filings will fall off and be cleaned. By the alternating sliding of the two mounting plates 603, the iron filings on the two magnetic blocks 604 can be cleaned in turn.

[0052] Specifically, such as Figure 2 , Figure 4 , Figure 5 and Figure 8 As shown, a cover 701 is installed on one side of the feed shell 601. The bottom of the cover 701 is provided with a discharge port 706. The cover 701 is located outside the two mounting plates 603. One end of the two mounting plates 603 extends to the outside of the cover 701. The mounting plates 603 are slidably connected to the bottom of the cover 701. The installation of the cover 701 helps to shield and protect the outside of the feed shell 601, preventing iron filings from overflowing. The cleaned iron filings are stored inside the cover 701 and discharged and recycled through the discharge port 706.

[0053] Specifically, such as Figure 4 , Figure 5 and Figure 7 As shown, two cylinders 702 are installed at the bottom of the feeding shell 601. The two cylinders 702 are connected to the feeding shell 601 through multiple fixed seats 705. The output shafts of one end of the two cylinders 702 are respectively connected to the center line of the bottom end of the two mounting plates 603 through connecting blocks 704. The installation of the two cylinders 702 realizes the drive control of the two mounting plates 603. By setting the two cylinders 702 to work in turn, the two mounting plates 603 slide in turn, so that the two mounting plates 603 automatically clean the iron filings.

[0054] An operating method for a fine sorting device for recycling waste materials from the dismantling of used household appliances includes the following steps:

[0055] S1: First, the crushed material is introduced into the inner top of the screening mechanism 2 via the conveyor belt. The screening mechanism 2 works to separate light debris, especially materials such as plastic film.

[0056] S2: The separated lightweight materials will enter the collection mechanism 3 for storage. The collection mechanism 3 is installed stably under the control of the locking mechanism 4. Pulling the locking mechanism 4 allows the collection mechanism 3 to be pulled out to clean the materials inside.

[0057] S3: Then the sieved fragments will continue to be fed into the filter mechanism 5 for further filtration of impurities, and the iron filings will be removed by the separation mechanism 6 after filtration.

[0058] S4: After the iron filings are removed, they adhere to the separation mechanism 6. The reciprocating operation of the cleaning mechanism 7 is controlled to automatically scrape and discharge the iron filings on the separation mechanism 6.

[0059] In use, the present invention first stabilizes the housing 201 using the support frame 1. Then, one end of the conveyor belt extends to the feed hopper 203 at the top of the housing 201 to receive the crushed material and quantitatively introduce it into the housing 201. The blower 202 blows air through the material inside the housing 201, causing lighter materials, such as plastic film, to fly out to one side, while heavier materials are discharged through the discharge port 205 for subsequent filtration. The installation of the ventilation net 204 facilitates the airflow from the blower 202 through the end of the housing 201, allowing light debris to be blown into one end of the housing 201 for easy recycling. Simultaneously, the widened top of the discharge port 205 facilitates the airflow blowing the material to a more oriented direction. Even after being moved, it can still be received by the discharge port 205. The installation of the collection box 301 facilitates the collection and storage of the blown lightweight debris. Pulling the handle 302 allows the collection box 301 to be pulled out for easy debris cleaning. Simultaneously, the bottom of the other end of the housing 201 has a certain slope, facilitating the guide of debris into the collection box 301 for storage. The installation of the fixing block 403 facilitates the connection of the handle 401. Under the pull of the return spring 405, the limiting rod 404 on the handle 401 inserts into the slot 402 at the bottom of the collection box 301, preventing the collection box 301 from being pulled out. Pulling the handle 401 causes the limiting rod 404 to slide free from the elastic force of the return spring 405, and the limiting rod 404 engages with the slot 402. The separation of trough 402 facilitates the removal and cleaning of collection box 301. The installation of guide shell 501 facilitates connection to screen 503. Screen 503 facilitates the receiving of material introduced through outlet 205. Due to the angle between guide shell 501 and the bottom of shell 201, material can slide on screen 503, achieving material screening and improving screening efficiency. The installation of multiple protrusions 504 helps to reduce the material discharge speed, resulting in better filtration when material passes through screen 503. The gradually increasing spacing of the protrusions 504 does not obstruct material discharge. The installation of discharge shell 601 facilitates the discharge of debris filtered by screen 503. Furthermore, the installation of two mounting plates 603 enables... Two magnetic blocks 604 are connected. The installation of magnetic blocks 604 facilitates the adsorption of iron filings in the crushed material, separating the iron filings and allowing the crushed material to slide on the magnetic blocks 604. Simultaneously, the installation of the connecting rod 602 reinforces the connection between the feed housing 601 and the guide housing 501, ensuring the stable installation of the feed housing 601. Two scrapers 703 are rotated and connected. The bottom of the scrapers 703 abuts against the mounting plate 603, and the scrapers 703 are at a certain angle to the side wall of the feed housing 601. When the mounting plate 603 moves carrying the iron filings from the magnetic blocks 604, the iron filings resist the rotation of the scrapers 703, causing the iron filings to leak out. After all the magnetic blocks 604 on the mounting plate 603 have slid out, the mounting plate 603 is pushed into the feed housing 601.At this time, the scraper 703 scrapes off the iron filings on the magnetic block 604. Once the magnetic block 604 is completely inside the discharge shell 601, the iron filings fall off for cleaning. The alternating sliding of the two mounting plates 603 allows for the alternating cleaning of the iron filings on the two magnetic blocks 604. The installation of the cover 701 provides protection to the outside of the discharge shell 601, preventing iron filings from overflowing. The cleaned iron filings are stored inside the cover 701 and discharged and recycled through the discharge port 706. The installation of two cylinders 702 drives and controls the two mounting plates 603. By setting the two cylinders 702 to work alternately, the two mounting plates 603 slide alternately, automatically cleaning the iron filings.

[0060] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fine sorting device for recycling waste materials from the dismantling of waste household appliances, comprising a support frame (1), characterized in that: A screening mechanism (2) is installed on the support frame (1). The screening mechanism (2) includes a housing (201). A filter mechanism (5) is installed at the bottom of the housing (201). The filter mechanism (5) includes a guide shell (501). A guide shell (501) is installed at the bottom of the housing (201). A separation mechanism (6) and a cleaning mechanism (7) are installed at the bottom of the guide shell (501). The separation mechanism (6) includes a feeding shell (601), which is installed at the center of the bottom of the guide shell (501). The angle between the feeding shell (601) and the guide shell (501) is 45 degrees. The top of the feeding shell (601) is located at the bottom of the screen (503). Two mounting plates (603) are installed on the inner side of the bottom of the feeding shell (601). The top side of the mounting plate (603) is located on the inner side of the bottom of the feeding shell (601). Magnetic blocks (604) are installed on the two mounting plates (603) respectively. The cleaning mechanism (7) includes a scraper (703). Two scrapers (703) are rotatably connected to one side of the discharge shell (601). The bottom of the scraper (703) abuts against the mounting plate (603). The angle between the scraper (703) and the side wall of the discharge shell (601) is 45 degrees. The bottom of the scraper (703) extends to the outside of the discharge shell (601). The two mounting plates (603) are slidably connected to the bottom of the discharge shell (601).

2. The fine sorting device for recycling waste materials from the dismantling of waste household appliances according to claim 1, characterized in that: A fan (202) is installed at one end of the housing (201), a feed hopper (203) is installed at the top of the housing (201), and a discharge port (205) is provided at the bottom of the housing (201). The bottom of the feed hopper (203) is located at the top of the discharge port (205).

3. The fine sorting device for recycling waste materials from the dismantling of waste household appliances according to claim 2, characterized in that: A ventilation mesh (204) is installed at the other end of the housing (201). The width of the discharge port (205) is greater than the bottom width of the feed hopper (203). The discharge port (205) has a conical structure.

4. The fine sorting device for recycling waste materials from the dismantling of waste household appliances according to claim 3, characterized in that: A collection mechanism (3) is installed on the housing (201). The collection mechanism (3) includes a collection box (301). The collection box (301) is slidably connected to the bottom of the other end of the housing (201). The top of the collection box (301) extends to the inner side of the top of the housing (201). One end of the collection box (301) extends to the outer side of the housing (201). A handle (302) is installed at one end of the collection box (301). The bottom of the other end of the housing (201) is provided with a certain slope.

5. The fine sorting device for recycling waste materials from the dismantling of waste household appliances according to claim 4, characterized in that: A locking mechanism (4) is installed at the bottom of the housing (201). The locking mechanism (4) includes a fixing block (403). The fixing block (403) is fixedly connected to the bottom of the other end of the housing (201). A handle (401) is installed at the bottom of the fixing block (403). Two return springs (405) are installed between the handle (401) and the fixing block (403). Two limiting rods (404) are vertically connected to the top of the handle (401). The two limiting rods (404) pass through the return springs (405) and the fixing block (403) respectively and extend into the interior of the housing (201). The bottom of the collection box (301) is provided with two slots (402). The tops of the two limiting rods (404) are engaged with the two slots (402) respectively.

6. The fine sorting device for recycling waste materials from the dismantling of waste household appliances according to claim 2, characterized in that: The angle between the bottom of the guide shell (501) and the bottom of the shell (201) is 45 degrees. The top of the shell (201) is provided with a feed inlet (502), which is aligned with the discharge outlet (205). A screen (503) is installed at the center of the bottom of the guide shell (501), and the feed inlet (502) is located at the top of one end of the screen (503).

7. The fine sorting device for recycling waste materials from the dismantling of waste household appliances according to claim 6, characterized in that: The feed guide shell (501) is equipped with a plurality of protrusions (504), wherein the plurality of protrusions (504) are located on the top of the screen (503), the top of the protrusions (504) is an arc-shaped structure, and the spacing between the plurality of protrusions (504) gradually narrows from bottom to top.

8. The fine sorting device for recycling waste materials from the dismantling of waste household appliances according to claim 1, characterized in that: The area of ​​the magnetic block (604) is smaller than that of the mounting plate (603). The top of the magnetic block (604) is flush with the inner bottom of the feed shell (601). Connecting rods (602) are installed on both sides of the feed shell (601). The tops of the two connecting rods (602) are connected to the bottom of the guide shell (501).

9. A fine sorting device for recycling waste materials from the dismantling of waste household appliances according to claim 8, characterized in that: A cover (701) is installed on one side of the feed shell (601). The bottom of the cover (701) is provided with a discharge port (706). The cover (701) is located outside the two mounting plates (603). One end of the two mounting plates (603) extends to the outside of the cover (701). The mounting plates (603) are slidably connected to the bottom of the cover (701). Two cylinders (702) are installed at the bottom of the feed shell (601). The two cylinders (702) are connected to the feed shell (601) through multiple fixed seats (705). The output shafts of one end of the two cylinders (702) are respectively connected to the center line of the bottom end of the two mounting plates (603) through connecting blocks (704).

10. An operating method for a fine sorting device for recycling waste materials from the dismantling of waste household appliances, characterized in that: The fine sorting device for recycling waste materials from the dismantling of waste household appliances according to any one of claims 1-9 includes the following steps: S1: First, the crushed material is introduced into the inner top of the screening mechanism (2) through the conveyor belt. The screening mechanism (2) works to separate light debris, especially small pieces such as plastic film. S2: The separated light materials will enter the collection mechanism (3) for storage. The collection mechanism (3) is installed stably under the control of the locking mechanism (4). Pulling the locking mechanism (4) allows the collection mechanism (3) to extract and clean the materials inside. S3: Then the sieved fragments will continue to be fed into the filter mechanism (5) for further filtration of impurities, and the iron filings will be removed by the separation mechanism (6) after filtration. S4: After the iron filings are removed, they adhere to the separation mechanism (6). The reciprocating operation of the cleaning mechanism (7) is controlled to automatically scrape off and discharge the iron filings on the separation mechanism (6).

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