A waste home appliance disassembling processing system and a disassembling method

Abstract

The application discloses a kind of waste home appliance disassembly processing system and disassembly method, for the technical problems of large size irregular plastic shell and the size mismatch of crushing roller bite gap, and material transfer is prone to block accumulation between multistage structure.The device is vertically distributed with crushing components and crushing components in support box.Bottom second driving motor drives conveying screw, and first and second shafts are driven in reverse by synchronous belt and driving gear.The conical tube receives the initial broken pieces and directs them between the two crushing rollers for rolling.The particles fall into the conveying cover and are discharged through the discharge pipe.The device establishes a continuous gravity feeding and physical transmission path in a limited space, eliminating the bridging obstacle of large shell direct feeding.

Description

Technical Field

[0001] This invention relates to the field of resource recycling technology, and in particular to a waste household appliance dismantling and processing system and dismantling method. Background Technology

[0002] The plastic casings of discarded household appliances typically have large volumes and irregular curved surfaces. When physically crushing them, conventional roller crushers often struggle to allow the larger casings to fall directly into the feed angle, leading to bridging or slippage at the inlet. Using extra-large diameter crushing rollers to accommodate these large casings would require an enormous amount of space. If the crushing process is divided into multiple independent units, the irregularly shaped material from the primary crushing stage can easily scatter or accumulate at the physical connections due to gravity during transfer to the secondary crushing stage, making it difficult to maintain continuous downward material flow within the limited internal space and causing blockages. Summary of the Invention

[0003] The purpose of this invention is to solve the technical problems of physical size mismatch between large-sized irregular plastic shells and the bite gap of secondary crushing rollers, and the easy physical accumulation and obstruction of the initial fragmented material when it is transferred to the lower crushing structure in a closed space. The invention proposes a waste household appliance dismantling and processing device and dismantling method.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A system and method for dismantling and processing waste household appliances, comprising: Support box; The bracket is slidably connected inside the support box and is used to support the plastic waste appliance shells; The first drive motor is fixed to one side of the support box; A transmission screw is fixedly connected to the output shaft of the first drive motor, and a transmission nut fixedly connected to the bracket is threaded onto the transmission screw. A baffle, fixed to the top of the bracket, is used to push plastic waste appliance casings when the bracket moves; The crushing component, installed on one side of the top of the support box, is used to crush the plastic waste appliance shells to form small pieces of plastic sheeting. A crushing component, installed inside the support box, is used to crush the small block-shaped plastic sheet into small plastic particles; The bracket is driven by the first drive motor to move the plastic waste appliance shell to the crushing component, and the small pieces of plastic formed by the crushing component fall into the pulverizing component.

[0005] In one possible design, the breaking component includes: A support frame is fixed to one side of the top of the support box; Two support shafts are symmetrically fixed inside the support frame, and the bottom end of each support shaft is fixedly connected to the inner wall of the support box; Two rotating pressure plates, each of which is rotatably sleeved on a corresponding support shaft, are used to squeeze and crush waste plastic appliance shells. Two drive components are symmetrically installed on the inner wall of the support frame. Each drive component is connected to one side of a corresponding rotating pressure plate and is used to drive the rotating pressure plate to rotate around the support shaft.

[0006] In one possible design, the driving component includes: The first connecting seat is rotatably connected to the inner wall of the support frame; An electric push rod, one end of which is fixedly connected to the first connecting seat; The second connecting seat is fixedly connected to the output shaft of the electric push rod and rotatably connected to one side of the corresponding rotating pressure plate; The support frame is also equipped with a controller, which is electrically connected to the electric push rod and is used to control the two electric push rods to move synchronously so that the two rotating pressure plates rotate synchronously towards or away from each other.

[0007] In one possible design, the breaking component further includes: A conical cover is fixed to the top inner wall of the support frame; Mounting cover, fixed to the top of the conical cover; An air pump is fixed inside the mounting cover via a tapered mounting tube; A connector, fixed to the end of the tapered mounting pipe, is used to connect to an external exhaust gas conveying pipe; The air pump is used to extract the waste gas generated by the crushing through the conical shroud, the mounting cover, and the connector.

[0008] In one possible design, the crushing component includes: A tapered tube, fixed to the bottom of two slide rails, is used to catch small pieces of plastic sheeting falling from the broken component; The first and second rotating shafts are parallel to each other and rotatably connected inside the support box, and the first and second rotating shafts are in a transmission cooperation. Two crushing rollers are fixedly sleeved on the first rotating shaft and the second rotating shaft respectively, and cooperate with each other to crush small pieces of plastic sheet; A conveying assembly is installed on the bottom inner wall of the support box to receive and convey plastic particles formed after being crushed by the crushing roller. The conveying assembly is connected to the first rotating shaft to drive the first rotating shaft to rotate.

[0009] In one possible design, the delivery assembly includes: A conveyor cover is fixed to the bottom inner wall of the support box, and the bottom of the tapered tube is fixedly connected to the top of the conveyor cover; The discharge pipe is fixed to the bottom inner wall of one side of the conveying cover and extends to the outside of the support box; The second drive motor is fixed to the bottom of the other side of the support box; A conveying screw, located inside the conveying shroud, has one end fixedly connected to the output shaft of the second drive motor and the other end rotatably connected to the inner wall of the conveying shroud, used to convey plastic granules to the discharge pipe; A transmission component connects the conveying screw and the first rotating shaft, and is used to drive the first rotating shaft to rotate when the conveying screw rotates.

[0010] In one possible design, the transmission component includes: Two synchronous pulleys are respectively fixedly sleeved on the conveying screw and the first rotating shaft; A synchronous belt is driven onto the two synchronous pulleys.

[0011] In one possible design, A drive gear is fixedly sleeved on the first rotating shaft; A driven gear is fixedly sleeved on the second rotating shaft; The driving gear meshes with the driven gear to cause the first shaft and the second shaft to rotate in opposite directions.

[0012] In one possible design, the crushing component further includes: A sealing plate is fixed inside the tapered tube, and its bottom extends into the conveying hood and is fixedly connected to the inner wall of the conveying hood; The first rotating shaft, the second rotating shaft, and the conveying screw all pass through the sealing plate and are rotatably connected to the sealing plate.

[0013] A dismantling method, applied in the waste appliance dismantling and processing system described above, includes the following steps: S1. Place the plastic waste appliance shell on the bracket, start the first drive motor, drive the transmission screw to rotate, so that the bracket moves on the slide rail, and the baffle on the top of the bracket pushes the plastic waste appliance shell towards the crushed parts; S2. When the plastic waste appliance shell moves between the two rotating pressure plates, the controller simultaneously activates the drive components on both sides of the support frame. The output shaft of the electric push rod in the drive component extends and retracts, driving the first connecting seat and the second connecting seat to make the rotating pressure plate rotate around the support shaft. The two rotating pressure plates rotate simultaneously toward the side that is closer to each other, squeezing and crushing the plastic waste appliance shell to form small pieces of plastic sheet. S3. During the crushing process, the air pump is started to generate suction, and the waste gas generated by crushing is transported to the external waste gas pipeline through the conical hood, the mounting hood, the air pump and the connector. S4. The small pieces of plastic sheet formed by crushing fall into the conical tube. The second drive motor is started to drive the conveying screw to rotate. The conveying screw drives the first rotating shaft to rotate through two synchronous pulleys and synchronous belt in the transmission component. The driving gear on the first rotating shaft meshes with the driven gear on the second rotating shaft, causing the second rotating shaft to rotate in the opposite direction to the first shaft. This causes the side of the two crushing rollers that are close to each other to rotate with a downward linear velocity, which crushes the small pieces of plastic sheet that have fallen into the conical tube to form granular plastic. S5. The plastic granules after secondary crushing fall into the conveyor hood, and the rotating conveyor screw discharges the plastic granules from the discharge pipe.

[0014] In this application, the plastic waste appliance casing to be processed is placed on a bracket. The first drive motor is started, driving the transmission screw to rotate. The transmission nut on the transmission screw causes the bracket to move on a slide rail. A baffle at the top of the bracket pushes the plastic waste appliance casing towards the crushing component. When the plastic waste appliance casing moves between two rotating pressure plates, the controller simultaneously activates the drive components on both sides of the support frame. The output shaft of the electric push rod in the drive component extends and retracts, driving the first and second connecting seats to rotate the rotating pressure plates around the support shaft. The two rotating pressure plates simultaneously rotate towards each other, crushing the plastic waste appliance casing into small pieces of plastic. During this process, an air pump is activated to generate suction, which further compresses the crushed plastic casing. The generated exhaust gas is transported through a conical hood, mounting cover, air pump, and connector to an external exhaust gas pipeline to prevent the exhaust gas from affecting the air environment of the production workshop. The small pieces of plastic sheeting formed by crushing fall into the conical tube. The second drive motor is started to drive the conveying screw to rotate. The conveying screw drives the first rotating shaft to rotate through two synchronous pulleys and synchronous belts in the transmission component. The driving gear on the first rotating shaft meshes with the driven gear on the second rotating shaft, causing the second rotating shaft to rotate in the opposite direction to the first rotating shaft. This causes the linear velocity of the two crushing rollers on the side that is close to each other to rotate downward, crushing the small pieces of plastic sheeting that have fallen into the conical tube into granular plastic. The plastic granules after secondary crushing fall into the conveying hood, and the rotating conveying screw discharges the plastic granules from the discharge pipe. Beneficial effects:

[0015] 1. By using two rotating pressure plates arranged at a preset angle to perform arc-shaped oscillation and extrusion within the support frame, the large-sized and irregularly curved appliance shells are initially physically reduced in size, peeled and folded into small pieces of plastic sheets that match the gap between the crushing rollers below, thus overcoming the bridging and slippage obstacles when feeding large-sized shells directly.

[0016] 2. The conical tube, rotating pressure plate, and the first and second rotating shafts below form a continuous gravity flow space in the vertical direction. The sheet material after initial crushing by the rotating pressure plate is directly dropped between the two crushing rollers by gravity and the physical guidance of the inner wall of the conical tube, eliminating material retention during the transfer between multi-stage crushing mechanisms.

[0017] 3. The conveyor cover is fixed to the bottom of the tapered tube at the bottom of the support box. The second drive motor drives the conveyor screw to rotate in one direction. At the same time, the synchronous pulley and synchronous belt drive the first rotating shaft and the drive gear above to rotate. The lower discharge part and the middle crushing station are connected in series by a single mechanical power source, and a continuous physical transmission path from top to bottom is established in the limited internal space.

[0018] 4. The air pump located at the top of the support frame forms a directional negative pressure suction channel with the conical cover, which collects and extracts the dust and gas released during the process of the rotating pressure plate squeezing the material, preventing dust particles from adhering and accumulating on the surface of the internal mechanical transmission components. Attached Figure Description

[0019] Figure 1 This is a first-view three-dimensional structural schematic diagram of a waste household appliance dismantling and processing system and dismantling method proposed in this invention; Figure 2 This is a second-view three-dimensional structural schematic diagram of a waste household appliance dismantling and processing system and dismantling method proposed in this invention; Figure 3 This is a three-dimensional cross-sectional schematic diagram of the support box structure of the waste household appliance dismantling and processing system and dismantling method proposed in this invention; Figure 4 This is a three-dimensional schematic diagram of the internal structure of the support frame of the waste household appliance dismantling and processing system and dismantling method proposed in this invention; Figure 5 This is a front-view sectional view of the waste household appliance dismantling and processing system and dismantling method proposed in this invention; Figure 6 This is a three-dimensional schematic diagram of the internal structure of the conical tube and conveyor hood of the waste household appliance dismantling and processing system and dismantling method proposed in this invention; Figure 7 This is a three-dimensional schematic diagram of the connection structure between the second drive motor, the first rotating shaft, and the second rotating shaft in a waste household appliance dismantling and processing system and dismantling method proposed in this invention.

[0020] In the diagram: 1. Support box; 2. Slide rail; 3. Bracket; 4. First drive motor; 5. Transmission screw; 6. Transmission nut; 7. Baffle; 8. Support frame; 9. Conical cover; 10. Mounting cover; 11. Conical mounting tube; 12. Connector; 13. Air pump; 14. Support shaft; 15. Rotating pressure plate; 16. First connecting seat; 17. Electric push rod; 18. Second connecting seat; 19. Conical tube; 20. First rotating shaft; 21. Second rotating shaft; 22. Crushing roller; 23. Sealing plate; 24. Conveying cover; 25. Discharge pipe; 26. Second drive motor; 27. Conveying screw; 28. Synchronous pulley; 29. ​​Synchronous belt; 30. Drive gear; 31. Driven gear. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] In one embodiment: Refer to Figure 1-7 A processing system includes a support box 1. Two slide rails 2, made of 45# steel and surface-hardened to a hardness of HRC50-55, are symmetrically fixedly installed inside the support box 1 along its length. A bracket 3, constructed of welded channel steel, is slidably connected to both slide rails 2, and its top surface is used to support the plastic waste appliance casings to be processed.

[0023] like Figure 1-2 As shown, a first drive motor 4, a three-phase asynchronous motor with a rated power of 1.5kW, is fixedly installed on the outer wall of one side of the support box 1 using four M8 hexagon socket bolts. The output shaft of the first drive motor 4 passes through the side wall of the support box 1 via a coupling and is fixedly mounted with a transmission screw 5. The transmission screw 5 has a Tr30×6 thread, and its end away from the first drive motor 4 is rotatably connected to the inner wall of the other side of the support box 1 via a deep groove ball bearing. A transmission nut 6 is threaded onto the transmission screw 5 and is fixedly installed on the bottom side of the bracket 3 by welding. A baffle 7 with a height of 150mm is fixedly welded to the top of the bracket 3, and the baffle 7 is perpendicular to the direction of movement of the bracket 3.

[0024] like Figure 4-5As shown, a crushing component is installed on one side of the top of the support box 1. The crushing component includes a support frame 8 fixedly mounted on the top of the support box 1 by bolts. Two support shafts 14 with a diameter of 20mm are symmetrically fixedly mounted on the inner side of the support frame 8. The bottom ends of the support shafts 14 extend into the support box 1 and are welded to the bottom inner wall of the support box 1. A rotating pressure plate 15 is rotatably mounted on each support shaft 14 via a self-aligning roller bearing. The main body of the rotating pressure plate 15 is a rectangular steel plate with a thickness of 15mm, and its working surface can be welded with teeth to increase friction. Two drive components are symmetrically mounted on the inner wall of the support frame 8. Each drive component includes a first connecting seat 16 rotatably connected to the inner wall of one side of the support frame 8 by a pin. An electric push rod 17 is hinged to one side of the first connecting seat 16. The electric push rod 17 has a rated thrust of 5000N and a stroke of 200mm. A second connecting seat 18 is hinged to the output shaft of the electric actuator 17. The second connecting seat 18 is rotatably connected to one side of the corresponding rotating pressure plate 15 via another pin. A controller (not shown in the figure) is also installed inside the support frame 8, and both electric actuators 17 are electrically connected to the controller via wires.

[0025] Plastic casings, especially the doors of large refrigerators or washing machines, are often large and curved. If a linearly moving pressure plate is used, the small contact area at initial contact can easily cause the casing to slip or flip. Using a pressure plate 15 that rotates around an axis, its trajectory is arc-shaped, forming a wrapping contact with the irregular casing surface, completing the initial physical reduction of the material's size and bringing it within the allowable bite gap range of the subsequent crushing roller 22. Simultaneously, the vertically arranged conical tubes 19 and the lower crushing components form a continuous gravity-guided flow path, eliminating the obstruction that can easily occur when the initially crushed material falls into the secondary crushing components.

[0026] like Figure 5 As shown, a conical shroud 9 is fixedly installed on the top inner wall of the support frame 8. The top of the conical shroud 9 extends above the support frame 8 and is welded to a mounting cover 10. A conical mounting pipe 11 is fixed to the inner wall of one side of the mounting cover 10. One side of the conical mounting pipe 11 extends to the outside of the mounting cover 10 and is flanged to a connector 12 for connection to an external exhaust gas conveying pipeline. An air pump 13, with a rated airflow of 500 m³ / h, is fixedly installed inside the conical mounting pipe 11 via a bracket.

[0027] like Figure 5-7As shown, a crushing component is also installed inside the support box 1. The crushing component includes a tapered tube 19 with a large upper diameter of 600mm and a small lower diameter of 200mm, which is bolted to the bottom of two slide rails 2. The bottom of the tapered tube 19 is welded to the top of a conveying hood 24. The conveying hood 24 has a U-shaped trough structure and is bolted to the bottom inner wall of the support box 1. An outlet is located on one side of the bottom of the conveying hood 24, and a downward-sloping discharge pipe 25 is welded to it, extending to the outside of the support box 1. A second drive motor 26, a geared motor with an output speed of 60rpm, is bolted to the bottom of the other outer wall of the support box 1. The output shaft of the second drive motor 26 passes through the side walls of the support box 1 and the conveying hood 24, and a conveying screw 27 is fixedly installed therethrough via a key connection. The outer diameter of the spiral blade of the conveying screw 27 matches the width of the inner cavity of the conveying cover 24, and its end away from the motor is fixedly connected to the inner wall of the other side of the conveying cover 24 through a thrust bearing seat.

[0028] like Figure 6-7 As shown, inside the tapered tube 19, in the area between the two slide rails 2, a first rotating shaft 20 and a second rotating shaft 21 are rotatably connected by ball bearings. A crushing roller 22 is fixedly fitted onto each of the first rotating shaft 20 and the second rotating shaft 21 via a key connection. The roller surface of the crushing roller 22 may be provided with staggered crushing teeth. The axes of the two crushing rollers 22 are parallel. A sealing plate 23 is welded and fixed inside the tapered tube 19, separating the lower part of the tapered tube 19 from the upper part of the conveying cover 24. The first rotating shaft 20, the second rotating shaft 21, and the conveying screw 27 all pass through the sealing plate 23 and are rotatably connected to the sealing plate 23 via sealed bearings.

[0029] like Figure 7 As shown, a transmission component is also connected to the conveying screw 27. The transmission component includes two synchronous pulleys 28 and a synchronous belt 29. One synchronous pulley 28 is fixedly mounted on the conveying screw 27 via a key connection, and the other synchronous pulley 28 is fixedly mounted on the end of the first rotating shaft 20 via a key connection. The two synchronous pulleys 28 are connected by the same synchronous belt 29 (where the synchronous pulleys 28 and the synchronous belt 29 can also be sprockets and chains). On the first rotating shaft 20, a driving gear 30 is fixedly mounted inside the tapered tube 19. On the second rotating shaft 21, a driven gear 31 is fixedly mounted at a corresponding position. The driving gear 30 and the driven gear 31 mesh with each other, with a module of 3 and a gear ratio of 1:1.

[0030] In this embodiment, the connection between the rotating pressure plate 15 and the support shaft 14 is designed as a rotating connection and driven by an electric push rod 17, based on engineering considerations regarding the crushing process of plastic shells. Plastic shells, especially the doors of large refrigerators or washing machines, are large in size and may have curved surfaces. If a linearly moving pressure plate is used, the shell may slip or overturn due to the small contact area at initial contact. Using a pressure plate 15 that rotates around an axis, its movement trajectory is arc-shaped, which can form a more gradual, enveloping contact with the surface of irregular shells, resulting in a smoother crushing process. If a linearly advancing pressure plate is used instead of a rotating structure, a larger driving force is required to overcome the slippage tendency in the early stages of shell deformation when processing certain curved shells, placing higher demands on equipment rigidity and driving power.

[0031] The operator places the plastic shell to be processed on the bracket 3, with one side against the baffle 7. The first drive motor 4 is started, rotating the transmission screw 5. The transmission nut 6, meshing with the transmission screw 5, moves the bracket 3 horizontally along the slide rail 2 towards the crushing component. The baffle 7 pushes the plastic shell along with it. Once the plastic shell is fed into the area between the two rotating pressure plates 15, the first drive motor 4 stops. Simultaneously, the controller activates two electric push rods 17, pushing the two rotating pressure plates 15 to rotate around their respective support shafts 14 towards the center, compressing the plastic shell. Due to the arc-shaped movement of the rotating pressure plates 15, they can better adapt to the shape of the shell, crushing it into smaller pieces of plastic. During this process, the air pump 13 starts, drawing dust and gas that may be generated during the crushing process into the conical hood 9, and then discharging it through the mounting cover 10, the conical mounting pipe 11, and the connector 12 into the external waste gas treatment pipeline.

[0032] The small pieces of plastic formed after crushing fall downwards and are collected by the conical tube 19, landing above the gap between the two crushing rollers 22. The second drive motor 26 is started, driving the conveying screw 27 to rotate. The conveying screw 27, through the synchronous pulley 28 and synchronous belt 29, drives the first rotating shaft 20 to rotate in the same direction. The driving gear 30 on the first rotating shaft 20 drives the driven gear 31 meshing with it, thereby driving the second rotating shaft 21 to rotate in the opposite direction. This causes the two crushing rollers 22 to rotate towards each other, with the linear velocity direction of the side closest to each other downwards, crushing and tearing the small pieces of plastic that have fallen into the gap into finer plastic particles. After passing through the gap between the crushing rollers 22, the plastic particles fall into the conveying hood 24 below. The continuously rotating conveying screw 27 conveys these plastic particles along the conveying hood 24 towards the discharge pipe 25, and finally discharges them from the system through the discharge pipe 25, completing the processing.

[0033] This application can be used in the field of resource recycling technology, or in other fields applicable to this application.

[0034] In another embodiment: Based on the above embodiments, an improvement is made to a waste household appliance dismantling and processing system and dismantling method, which is applied to the field of resource recycling technology. The structure of this embodiment is basically the same as that of the aforementioned embodiments, except that the specific form of the driving component is different, while other structures are the same.

[0035] In this embodiment, the drive assembly does not use an electric push rod, but instead employs a rotary motor in conjunction with a crank-connecting rod mechanism. Specifically, a servo motor is mounted on the support frame 8, and a crank is fixed to the output shaft of the servo motor. One end of a connecting rod is hinged to the crank, and the other end is hinged to the second connecting seat 18. The second connecting seat 18 remains rotatably connected to one side of the rotating pressure plate 15. By controlling the servo motor to reciprocate, the crank is driven to rotate, which in turn pushes the rotating pressure plate 15 to reciprocate through the connecting rod.

[0036] This drive system, employing a rotary motor and crank-connecting rod, is suitable for applications requiring precise control over the swing speed and intermediate position of the rotating pressure plate 15. For example, when processing plastic shells of varying thicknesses or materials, the rotation angle of the servo motor can be programmed to precisely control the final gap and extrusion speed when the two rotating pressure plates 15 are closed. However, this structure involves numerous connecting rods and hinge points. During long-term, high-load crushing operations, the pins and bearings at the hinges must withstand significant alternating stress, potentially leading to higher wear and maintenance frequencies compared to the direct-drive electric push rod system in the first embodiment. Therefore, this solution is more suitable for production line environments with relatively stable throughput and high requirements for fragment size consistency. In coarse crushing stations that frequently handle large, high-strength shells, the structure of the first embodiment may offer greater durability advantages.

[0037] This invention proposes a dismantling method, applied in the aforementioned waste household appliance dismantling and processing system, comprising the following steps: S1. Place the plastic waste appliance shell on the bracket 3, start the first drive motor 4, drive the transmission screw 5 to rotate, so that the bracket 3 moves on the slide rail 2, and the baffle 7 on the top of the bracket 3 pushes the plastic waste appliance shell towards the crushed parts. S2. When the plastic waste appliance shell moves between the two rotating pressure plates 15, the controller simultaneously activates the drive components on both sides of the support frame 8. The output shaft of the electric push rod 17 in the drive component extends and retracts, driving the first connecting seat 16 and the second connecting seat 18 to make the rotating pressure plate 15 rotate around the support shaft 14. The two rotating pressure plates 15 rotate towards each other at the same time, squeezing and crushing the plastic waste appliance shell to form small pieces of plastic sheet. S3. During the crushing process, the air pump 13 is started to generate suction, and the waste gas generated by crushing is transported to the external waste gas pipeline through the conical cover 9, the mounting cover 10, the air pump 13 and the connector 12. S4. The small pieces of plastic sheet formed by crushing fall into the conical tube 19. The second drive motor 26 is started to drive the conveying screw 27 to rotate. The conveying screw 27 drives the first rotating shaft 20 to rotate through the two synchronous pulleys 28 and the synchronous belt 29 in the transmission component. The driving gear 30 on the first rotating shaft 20 meshes with the driven gear 31 on the second rotating shaft 21, so that the second rotating shaft 21 rotates in the opposite direction to the first rotating shaft 20. This causes the side of the two crushing rollers 22 that is close to each other to rotate with a downward linear velocity, which crushes the small pieces of plastic sheet that have fallen into the conical tube 19 to form granular plastic. S5. The plastic particles after secondary crushing fall into the conveyor hood 24, and the rotating conveyor screw 27 discharges the plastic particles from the discharge pipe 25.

[0038] However, as is well known to those skilled in the art, the working principles and wiring methods of the first drive motor 4, air pump 13, electric push rods 17 and 26 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0039] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A waste household appliance dismantling and processing system, characterized in that, include: Support box (1); The bracket (3) is slidably connected inside the support box (1) and is used to support the plastic waste household appliance shell; The first drive motor (4) is fixed to one side of the support box (1); The transmission screw (5) is fixedly connected to the output shaft of the first drive motor (4), and the transmission screw (5) is threaded with a transmission nut (6) that is fixedly connected to the bracket (3). A baffle (7) is fixed to the top of the bracket (3) and is used to push the plastic waste appliance casing when the bracket (3) moves; The crushing component is installed on the top side of the support box (1) and is used to crush the plastic waste household appliance shells to form small pieces of plastic sheet; The crushing component is installed inside the support box (1) and is used to crush the small block plastic sheet into small plastic particles. The bracket (3) is driven by the first drive motor (4) to move the plastic waste appliance shell to the crushing component, and the small pieces of plastic formed by the crushing component fall into the pulverizing component.

2. The waste household appliance dismantling and processing system according to claim 1, characterized in that, The crushing component includes: The support frame (8) is fixed to one side of the top of the support box (1); Two support shafts (14) are symmetrically fixed inside the support frame (8), and the bottom end of each support shaft (14) is fixedly connected to the inner wall of the support box (1); Two rotating pressure plates (15), each of the rotating pressure plates (15) is rotatably sleeved on a corresponding support shaft (14), for crushing and breaking plastic waste appliance shells; Two drive components are symmetrically installed on the inner wall of the support frame (8). Each drive component is connected to one side of a corresponding rotating pressure plate (15) to drive the rotating pressure plate (15) to rotate around the support shaft (14).

3. The waste household appliance dismantling and processing system according to claim 2, characterized in that, The driving component includes: The first connecting seat (16) is rotatably connected to the inner wall of the support frame (8); An electric push rod (17) is fixedly connected at one end to the first connecting seat (16); The second connecting seat (18) is fixedly connected to the output shaft of the electric push rod (17) and rotatably connected to one side of the corresponding rotating pressure plate (15); The support frame (8) is also equipped with a controller, which is electrically connected to the electric push rod (17) and is used to control the two electric push rods (17) to move synchronously so that the two rotating pressure plates (15) rotate synchronously towards or away from each other.

4. The waste household appliance dismantling and processing system according to claim 2, characterized in that, The crushing component also includes: A conical cover (9) is fixed to the top inner wall of the support frame (8); Mounting cover (10) is fixed to the top of the conical cover (9); An air pump (13) is fixed inside the mounting cover (10) via a tapered mounting tube (11); The connector (12) is fixed to the end of the tapered mounting pipe (11) and is used to connect to an external exhaust gas conveying pipe; The air pump (13) is used to extract the waste gas generated by the crushing through the conical cover (9), the mounting cover (10) and the connector (12).

5. The waste household appliance dismantling and processing system according to claim 1, characterized in that, The crushing component includes: A tapered tube (19) is fixed to the bottom of two slide rails (2) to receive small pieces of plastic sheeting falling from the broken component; The first rotating shaft (20) and the second rotating shaft (21) are parallel to each other and rotatably connected in the support box (1), and the first rotating shaft (20) and the second rotating shaft (21) are in transmission cooperation; Two crushing rollers (22) are fixedly sleeved on the first rotating shaft (20) and the second rotating shaft (21) respectively, and cooperate with each other to crush small pieces of plastic board; The conveying assembly is installed on the bottom inner wall of the support box (1) and is used to receive and convey plastic particles formed after being crushed by the crushing roller (22). The conveying assembly is connected to the first rotating shaft (20) and is used to drive the first rotating shaft (20) to rotate.

6. The waste household appliance dismantling and processing system according to claim 5, characterized in that, The conveying assembly includes: The conveyor cover (24) is fixed to the bottom inner wall of the support box (1), and the bottom of the tapered tube (19) is fixedly connected to the top of the conveyor cover (24); The discharge pipe (25) is fixed to the bottom inner wall of one side of the conveying cover (24) and extends to the outside of the support box (1); The second drive motor (26) is fixed to the bottom of the other side of the support box (1); The conveying screw (27) is located inside the conveying cover (24). One end is fixedly connected to the output shaft of the second drive motor (26), and the other end is rotatably connected to the inner wall of the conveying cover (24). It is used to convey plastic particles to the discharge pipe (25). A transmission component connects the conveying screw (27) and the first rotating shaft (20) and is used to drive the first rotating shaft (20) to rotate when the conveying screw (27) rotates.

7. The waste household appliance dismantling and processing system according to claim 6, characterized in that, The transmission component includes: Two synchronous pulleys (28) are respectively fixedly sleeved on the conveying screw (27) and the first rotating shaft (20); The synchronous belt (29) is driven onto the two synchronous pulleys (28).

8. The waste household appliance dismantling and processing system according to claim 5, characterized in that, A drive gear (30) is fixedly sleeved on the first rotating shaft (20); A driven gear (31) is fixedly sleeved on the second rotating shaft (21); The driving gear (30) meshes with the driven gear (31) to cause the first shaft (20) and the second shaft (21) to rotate in opposite directions.

9. The waste household appliance dismantling and processing system according to claim 6, characterized in that, The crushing component further includes: The sealing plate (23) is fixed inside the tapered tube (19), and its bottom extends into the conveying cover (24) and is fixedly connected to the inner wall of the conveying cover (24); The first rotating shaft (20), the second rotating shaft (21) and the conveying screw (27) all pass through the sealing plate (23) and are rotatably connected to the sealing plate (23).

10. A dismantling method, applied in the waste household appliance dismantling and processing system as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Place the plastic waste appliance shell on the bracket (3), start the first drive motor (4), drive the transmission screw (5) to rotate, so that the bracket (3) moves on the slide rail (2), and the baffle (7) on the top of the bracket (3) pushes the plastic waste appliance shell to move towards the crushed parts; S2. When the plastic waste appliance shell moves between the two rotating pressure plates (15), the controller simultaneously starts the drive components on both sides of the support frame (8). The output shaft of the electric push rod (17) in the drive component extends and retracts, driving the first connecting seat (16) and the second connecting seat (18) to make the rotating pressure plate (15) rotate around the support shaft (14). The two rotating pressure plates (15) rotate towards each other at the same time, squeezing and crushing the plastic waste appliance shell to form small pieces of plastic sheet. S3. During the crushing process, the air pump (13) is started to generate suction, and the waste gas generated by crushing is transported to the external waste gas pipeline through the conical cover (9), the mounting cover (10), the air pump (13) and the connector (12); S4. The small pieces of plastic sheet formed by crushing fall into the conical tube (19). The second drive motor (26) is started to drive the conveying screw (27) to rotate. The conveying screw (27) drives the first rotating shaft (20) to rotate through the two synchronous pulleys (28) and the synchronous belt (29) in the transmission component. The driving gear (30) on the first rotating shaft (20) meshes with the driven gear (31) on the second rotating shaft (21) to drive the second rotating shaft (21) to rotate in the opposite direction to the first rotating shaft (20). This causes the two crushing rollers (22) to rotate with a downward linear velocity on the side that is close to each other, crushing the small pieces of plastic sheet that have fallen into the conical tube (19) to form granular plastic. S5. The plastic particles after secondary crushing fall into the conveyor hood (24), and the rotating conveyor screw (27) discharges the plastic particles from the discharge pipe (25).

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