An improved plastic waste recycling and processing device

Abstract

This invention provides an improved plastic waste recycling and processing device, belonging to the field of plastic recycling technology. It includes a washing tank, with a top frame fixedly installed on the upper part of the washing tank. Side steel frames are fixedly installed on the upper parts of the front and rear sides of the washing tank, parallel to the X-axis. A chain conveyor is installed at one end of the washing tank. A first linear motor is fixedly installed on the upper part of the side steel frames. The first linear motor is a double-rail linear motor, with its two tracks parallel to the Z-axis. A sinking pressure screen assembly is installed on the top frame. In this invention, the rotating rod opens in an inverted V-shape, and the winding motor drives the stainless steel rotating shaft to rotate. Two pressure rods open the pressure screen into a planar shape, covering the upper part of the washing tank and immersing lightweight plastic fragments below the water surface. This improves the applicability to plastics of different densities and allows for more flexible deployment and retraction of the pressure screen and pressure rods.

Description

Technical Field

[0001] This invention belongs to the field of plastic recycling technology, and in particular relates to an improved plastic waste recycling and processing device. Background Technology

[0002] Plastic recycling refers to the process of recycling and reusing waste plastics using specific recycling technologies. In my country, waste plastics mainly consist of plastic films, plastic filaments and woven products, plastic packaging boxes and containers, daily-use plastic products, and plastic bags. Plastic recycling typically includes steps such as plastic crushing, recycling, and reprocessing. Currently, in plastic recycling, plastic recycling cleaning equipment is usually required to complete the cleaning step in the plastic waste recycling process.

[0003] In plastic recycling, lightweight plastics that float on the water and heavier plastics that sink to the bottom are usually crushed by the crusher in the previous process and then sent to the washing equipment for cleaning.

[0004] One application, numbered 202420225781.3, describes a plastic recycling device comprising a plastic debris washing tank and a feeding conveyor belt. The inner wall of the washing tank is fixedly connected to several evenly distributed support rods, the bottom of which are detachably connected to plastic debris pressing screens. A drive roller is rotatably connected to the inner wall of the washing tank, and a stirring rod for agitating the plastic debris is fixedly connected to the outer wall of the drive roller. While this plastic recycling and cleaning equipment can limit floating plastic debris through the pressing screens, the coverage area of ​​the pressing screens is limited by the feed inlet, and the relatively fixed position of the pressing screens makes it inconvenient to remove them for maintenance or cleaning of the washing tank. Furthermore, it has poor cleaning effect on settled plastic.

[0005] Currently available plastic waste recycling and cleaning equipment typically consists of a cleaning tank equipped with ultrasonic cleaning components or spray cleaning components, as well as other components for cleaning plastics. It also features a chain conveyor to transport the plastics out of the cleaning tank. While this type of cleaning equipment can transport heavier plastics that have sunk to the bottom, it is not convenient for collecting plastic fragments that are floating on the surface. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides an improved plastic waste recycling and processing device that can simultaneously clean lightweight plastic fragments and settled plastic fragments, improving its applicability to plastics of different densities, allowing for more flexible pressing of lightweight plastic fragments into water, and enabling the aggregation of lightweight plastics.

[0007] The present invention is achieved through the following technical solutions:

[0008] An improved plastic waste recycling and processing device includes a washing tank, a top frame fixedly installed on the upper part of the washing tank, side steel frames fixedly installed on the upper parts of the front and rear sides of the washing tank parallel to the X-axis, a chain conveyor installed at one end of the washing tank, a first linear motor fixedly installed on the upper part of the side steel frames, the first linear motor is a double-rail linear motor, the two rails of the double-rail linear motor are set parallel to the Z-axis, and a sinking pressure net assembly is installed on the top frame.

[0009] The sinking mesh pressing assembly includes a movable frame, on which a winding motor and a gearbox are fixedly mounted. The input shaft of the gearbox is coupled to the output shaft of the winding motor. A stainless steel rotating shaft is coupled to the output shaft of the gearbox, and the mesh pressing is wound around the outside of the stainless steel rotating shaft. A housing is fixedly mounted on the lower part of the movable frame. First cylinders are fixedly mounted side by side inside the housing. An inverted U-shaped frame is fixedly mounted between the lower ends of the output rods of the two first cylinders. Limit rods are fixedly mounted on both sides of the lower part of the housing. Side protrusions are integrally provided on both sides of the inverted U-shaped frame. Gears are installed inside the inverted U-shaped frame through a rotating shaft. Two gears are meshed and connected. A reduction motor is fixedly mounted on one side of the inverted U-shaped frame. The reduction motor is a worm gear reduction motor. The output shaft of the reduction motor is connected to the rotating shaft of one of the gears. A rotating rod is fixedly mounted on the lower part of each gear. A tubular connector is integrally provided on the lower part of each rotating rod. A pressure rod is fixedly mounted on the lower part of each tubular connector.

[0010] The retrieval box assembly includes a retrieval box. Mounting frames are integrally installed on both sides of the upper part of the retrieval box. An insert plate is fixedly installed at the outer end of each mounting frame. A liquid level sensor is fixedly installed at the upper opening of the retrieval box. A second linear motor is installed at the lower part of the retrieval box. The second linear motor is a dual-rail linear motor. The two rails of the second linear motor are respectively fixedly installed on the upper parts of the two side steel frames. Guide rails are provided on the outer sides of the two rails of the second linear motor. Pads are slidably installed on the guide rails. Sliding plates are fixedly installed on the upper parts of the two sliders of the second linear motor. The sliding plates are fixedly installed with the pads. The two guide rails are fixedly installed with the side steel frames. A second cylinder is fixedly installed at the lower part of each sliding plate. The output rods of the two second cylinders are respectively fixedly installed at the lower parts of the two insert plates.

[0011] Preferably, the two limiting rods pass through the two side protrusions respectively.

[0012] Preferably, the movable frame is fixedly installed on the upper part between the sliders that are slidably disposed on the two tracks of the first linear motor.

[0013] Preferably, the lower end of the pressure net is fixedly connected to the pressure rod provided on the rear side.

[0014] Preferably, a controller and an ultrasonic generator are provided on one side of the cleaning tank.

[0015] Preferably, the cleaning tank is equipped with an ultrasonic vibrating plate.

[0016] Preferably, steel pipe clamps are fixedly installed on the upper part of the mounting bracket, the insert plate, and the sliding plate. The steel pipe clamps are used to limit the wires of the liquid level sensor.

[0017] Preferably, the left side, top side, and bottom side of the retrieval box are all made of stainless steel mesh.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In this invention, during cleaning, the first linear motor drives the moving frame to the upper middle part of the cleaning tank, the reduction motor drives one of the gears to rotate, the two gears mesh and rotate, the gear rotates outward, opening the rotating rod in an inverted V shape, the winding motor drives the stainless steel rotating shaft to rotate, the two pressure rods open the pressure net into a flat shape, the pressure net covers the upper part of the cleaning tank, immersing the lightweight plastic fragments in the lower part of the water surface, improving the applicability to plastics of different densities, and enabling more flexible deployment and retraction of the pressure net and pressure rods.

[0020] 2. In this invention, after cleaning is completed, the second linear motor drives the sliding plate to move, and the second cylinder drives the retrieval box to descend. The water level in the cleaning pool is located within the opening on one side of the retrieval box. The second linear motor drives the retrieval box to move, gathering the lighter plastic fragments floating on the water surface and separating the light plastic fragments from the plastic fragments that sink to the bottom. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a structural schematic diagram of the sinking pressure net assembly of the present invention.

[0023] Figure 3 This is a schematic diagram of the lower part of the inverted U-shaped frame of the present invention.

[0024] Figure 4 This is a schematic diagram of the internal structure of the inverted U-shaped frame of the present invention.

[0025] Figure 5 This is a structural schematic diagram of the salvage box assembly of the present invention.

[0026] In the picture:

[0027] 1. Cleaning tank; 11. Top frame; 12. Side steel frame; 13. Chain conveyor; 14. First linear motor; 2. Sinking mesh pressing assembly; 21. Moving frame; 22. Rewinding motor; 23. Gearbox; 24. Mesh pressing; 25. Machine housing; 26. Limiting rod; 27. Inverted U-shaped frame; 271. Side protrusion; 272. First cylinder; 273. Gearbox; 274. Gear; 275. Rotating rod; 276. Tubular connector; 277. Pressure rod; 3. Retrieval box assembly; 31. Retrieval box; 32. Mounting frame; 33. Insert plate; 34. Liquid level sensor; 35. Second linear motor; 36. Guide rail; 37. Sliding plate; 38. Pad block; 39. Second cylinder; 4. Controller; 5. Ultrasonic generator. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings, as shown below. Figure 1 As shown, an improved plastic waste recycling and processing device includes a washing tank 1. A top frame 11 is fixedly installed on the upper part of the washing tank 1. Side steel frames 12 are fixedly installed on the upper parts of the front and rear sides of the washing tank 1, which are parallel to the X-axis. A chain conveyor 13 is installed at one end of the washing tank 1. A first linear motor 14 is fixedly installed on the upper part of the side steel frame 12. The first linear motor 14 is a double-rail linear motor. The two rails of the double-rail linear motor are set parallel to the Z-axis. A sinking pressure net assembly 2 is installed on the top frame 11.

[0029] In this implementation plan, in conjunction with the appendix Figure 2 As shown, the sinking mesh pressing assembly 2 includes a movable frame 21, on which a winding motor 22 and a gearbox 23 are fixedly mounted. The input shaft of the gearbox 23 is coupled to the output shaft of the winding motor 22. A stainless steel rotating shaft is coupled to the output shaft of the gearbox 23. The stainless steel rotating shaft is parallel to the X-axis. A pressing mesh 24 is wound around the outside of the stainless steel rotating shaft. A housing 25 is fixedly mounted on the lower part of the movable frame 21. First cylinders 272 are fixedly mounted side by side inside the housing 25. An inverted U-shaped frame 27 is fixedly mounted between the lower ends of the output rods of the two first cylinders 272. Limiting rods 26 are fixedly mounted on both sides of the lower part of the housing 25.

[0030] In this implementation plan, in conjunction with the appendix Figure 3 and attached Figure 4As shown, the inverted U-shaped frame 27 has side protrusions 271 integrated on both sides. Gears 274 are installed inside the inverted U-shaped frame 27 via a rotating shaft. Two gears 274 are meshed and connected. A reduction motor 273 is fixedly installed on one side of the inverted U-shaped frame 27. The output shaft of the reduction motor 273 is connected to the rotating shaft of one of the gears 274. A rotating rod 275 is fixedly installed at the lower part of each gear 274. A tubular connector 276 is integratedly provided at the lower part of each rotating rod 275. A pressure rod 277 is fixedly installed at the lower part of each tubular connector 276.

[0031] In this implementation plan, in conjunction with the appendix Figure 5 As shown, the retrieval box assembly 3 includes a retrieval box 31. Mounting brackets 32 are integrally installed on both sides of the upper part of the retrieval box 31. An insert plate 33 is fixedly installed at the outer end of each mounting bracket 32. A liquid level sensor 34 is fixedly installed at the upper opening of the retrieval box 31. The liquid level sensor 34 is a non-contact liquid level sensor. A second linear motor 35 is installed at the lower part of the retrieval box 31. The second linear motor 35 is a double-rail linear motor. The two rails of the second linear motor 35 are respectively fixedly installed on the upper parts of the two side steel frames 12. Guide rails 36 are provided on the outer sides of the two rails of the second linear motor 35. Pads 38 are slidably installed on the guide rails 36. Sliding plates 37 are fixedly installed on the upper parts of the two sliders of the second linear motor 35. The sliding plates 37 are made of steel plates and are fixedly installed with the pads 38. 7. During movement, the pad 38 moves relative to the guide rail 36, providing support and limiting for the sliding plate 37. The two guide rails 36 are fixedly installed with the side steel frame 12. A second cylinder 39 is fixedly installed at the lower part of each sliding plate 37. The output rods of the two second cylinders 39 are respectively fixedly installed at the lower part of the two insert plates 33. After cleaning, the sinking net assembly 2 moves to one side, the second linear motor 35 drives the sliding plate 37 to move, and the second cylinder 39 drives the retrieval box 31 to descend. The horizontal plane in the cleaning pool 1 is located within the opening on one side of the retrieval box 31. The second linear motor 35 drives the retrieval box 31 to move, gathering the lighter plastic fragments floating on the water surface. The heavier plastic fragments are conveyed out of the cleaning pool 1 by the chain conveyor 13, thereby separating the light plastic fragments from the bottom plastic fragments.

[0032] In this embodiment, specifically, the two limiting rods 26 pass through the two side protrusions 271 respectively, and the limiting rods 26 and the side protrusions 271 play a limiting role in the lifting and lowering of the inverted U-shaped frame 27.

[0033] In this embodiment, specifically, the movable frame 21 is fixedly installed on the upper part between the sliders that are slidably disposed on the two tracks of the first linear motor 14.

[0034] In this embodiment, specifically, the lower end of the pressure net 24 is fixedly connected to the pressure rod 277 provided on the rear side.

[0035] In this embodiment, specifically, a controller 4 and an ultrasonic generator 5 are provided on one side of the cleaning tank 1.

[0036] In this embodiment, specifically, an ultrasonic vibrating plate is installed inside the cleaning tank 1, and the ultrasonic vibrating plate is electrically connected to the ultrasonic generator 5.

[0037] In this embodiment, specifically, steel pipe clamps are fixedly installed on the upper parts of the mounting bracket 32, the insert plate 33 and the sliding plate 37. The steel pipe clamps are used to limit the wires of the liquid level sensor 34.

[0038] In this embodiment, specifically, the left side, upper side, and lower side of the salvage box 31 are all made of stainless steel mesh.

[0039] In this embodiment, specifically, the chain conveyor 13, the first linear motor 14, the winding motor 22, the gearbox 23, the first cylinder 272, the reduction motor 273, the liquid level sensor 34, the second linear motor 35, the second cylinder 39, and the ultrasonic generator 5 are all electrically connected to the controller 4, which is an industrial controller.

[0040] Working principle

[0041] In this invention, the plastic fragments produced in the previous process are transported to the cleaning tank 1 via an external conveying device. During cleaning, the retrieval box assembly 3 is positioned on the outer left side of the cleaning tank 1. The first linear motor 14 drives the moving frame 21 to move, causing the moving frame 21 to move to the upper middle part of the cleaning tank 1. The reduction motor 273 drives one of the gears 274 to rotate, thereby causing the two gears 274 to mesh and rotate, opening the rotating rod 275 in an inverted V shape. As the rotating rod 275 opens, the winding motor 22 drives the stainless steel shaft to rotate. The pressure net 24 is released. When the two pressure rods 277 move in opposite directions, the pressure net 24 is opened into a flat shape. The first cylinder 272 drives the inverted U-shaped frame 27 to descend, thereby immersing the pressure rods 277 into the lower part of the water surface of the cleaning tank 1. The pressure net 24 covers the upper part of the cleaning tank 1, immersing the lightweight plastic fragments into the lower part of the water surface. The lightweight plastic fragments and the heavier plastic fragments that sink to the bottom are cleaned by the ultrasonic generator 5 and the ultrasonic vibrating plate, which improves the applicability to plastics of different densities and allows for more flexible release and retraction of the pressure net 24 and pressure rods 277.

[0042] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solutions described in this invention, or by designing similar technical solutions by those skilled in the art under the inspiration of the technical solutions described in this invention, falls within the protection scope of this invention.

Claims

1. An improved plastic waste recycling and processing device, characterized in that, The improved plastic waste recycling and processing device includes a washing tank (1), a top frame (11) is fixedly installed on the upper part of the washing tank (1), side steel frames (12) are fixedly installed on the upper parts of the front and rear sides of the washing tank (1) parallel to the X-axis, a chain plate conveyor (13) is installed at one end of the washing tank (1), a first linear motor (14) is fixedly installed on the upper part of the side steel frame (12), the first linear motor (14) is a double-rail linear motor, the two rails of the double-rail linear motor are set parallel to the Z-axis, and a sinking pressure net assembly (2) is installed on the top frame (11). The sinking mesh pressing assembly (2) includes a movable frame (21), on which a winding motor (22) and a gearbox (23) are fixedly mounted. The input shaft of the gearbox (23) is coupled to the output shaft of the winding motor (22). A stainless steel rotating shaft is coupled to the output shaft of the gearbox (23). A mesh pressing (24) is wound around the outside of the stainless steel rotating shaft. A housing (25) is fixedly mounted on the lower part of the movable frame (21). A first cylinder (272) is fixedly mounted side by side inside the housing (25). An inverted U-shaped frame (27) is fixedly mounted between the lower ends of the output rods of the two first cylinders (272). Limiting rods (24) are fixedly mounted on both sides of the lower part of the housing (25). 6) Side protrusions (271) are integrally provided on both sides of the inverted U-shaped frame (27). Gears (274) are installed inside the inverted U-shaped frame (27) through a rotating shaft. Two gears (274) are meshed and connected. A reduction motor (273) is fixedly installed on one side of the inverted U-shaped frame (27). The output shaft of the reduction motor (273) is connected to the rotating shaft of one of the gears (274). A rotating rod (275) is fixedly installed at the lower part of each gear (274). A tubular connector (276) is integrally provided at the lower part of each rotating rod (275). A pressure rod (277) is fixedly installed at the lower part of each tubular connector (276). The retrieval box assembly (3) includes a retrieval box (31). Mounting brackets (32) are integrally installed on both sides of the upper part of the retrieval box (31). An insert plate (33) is fixedly installed at the outer end of each mounting bracket (32). A liquid level sensor (34) is fixedly installed at the upper opening of the retrieval box (31). A second linear motor (35) is installed at the lower part of the retrieval box (31). The second linear motor (35) is a double-rail linear motor. The two rails of the second linear motor (35) are respectively fixedly installed on the upper parts of the two side steel frames (12). The two tracks of the linear motor (35) are provided with guide rails (36), and pads (38) are slidably installed on the guide rails (36). The upper part of the two sliders of the second linear motor (35) is fixedly installed with sliding plates (37), and the sliding plates (37) are fixedly installed with the pads (38). The two guide rails (36) are fixedly installed with the side steel frame (12). The lower part of each sliding plate (37) is fixedly installed with a second cylinder (39), and the output rods of the two second cylinders (39) are respectively fixedly installed on the lower part of the two insert plates (33).

2. The improved plastic waste recycling and processing device as described in claim 1, characterized in that, The two limiting rods (26) respectively pass through the two side protrusions (271).

3. The improved plastic waste recycling and processing device as described in claim 1, characterized in that, The movable frame (21) is fixedly installed on the upper part between the sliders that are slidably set on the two tracks of the first linear motor (14).

4. The improved plastic waste recycling and processing device as described in claim 1, characterized in that, The lower end of the pressure net (24) is fixedly connected to the pressure rod (277) provided on the rear side.

5. The improved plastic waste recycling and processing device as described in claim 1, characterized in that, A controller (4) and an ultrasonic generator (5) are provided on one side of the cleaning tank (1).

6. The improved plastic waste recycling and processing device as described in claim 1, characterized in that, The cleaning tank (1) is equipped with an ultrasonic vibrating plate.

7. The improved plastic waste recycling and processing device as described in claim 1, characterized in that, The upper parts of the mounting bracket (32), insert plate (33) and sliding plate (37) are all fixedly equipped with steel pipe clamps, which are used to limit the wires of the liquid level sensor (34).

8. The improved plastic waste recycling and processing device as described in claim 1, characterized in that, The left, upper, and lower sides of the salvage box (31) are all made of stainless steel mesh.

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