A plastic particle impurity removal apparatus

Abstract

The application relates to a plastic particle impurity removing device, which comprises a removing box, a feeding cavity separated by a first filter screen in the inner cavity of the removing box and a discharging cavity separated by a second filter screen, the discharging cavity and the feeding cavity are communicated through a conveying channel, a feeding port is arranged at the top of the feeding cavity, a pushing plate driven by a motor is rotatably connected to the inner cavity of the feeding cavity, and the top of the conveying channel is an upper filter plate for discharging oil stains. The application relates to the technical field of plastic particle cleaning. The plastic particle impurity removing device is characterized in that the conveying channel is obliquely arranged upwards, the plastic particles are driven to convey to the right through the impact force of water flow while utilizing the buoyancy of the plastic particles, the cleaning efficiency is higher, the height difference is utilized to accelerate the conveying speed of the plastic particles through the buoyancy of the plastic particles, the oil stains, the plastic particles and the metal scraps can be separated quickly during conveying, and the cleaning is more clean.

Description

Technical Field

[0001] This invention relates to the field of plastic particle cleaning technology, specifically to a plastic particle impurity removal device. Background Technology

[0002] Plastic pellets refer to granular plastics. Recycled plastics are produced by recycling used or waste plastics through a screw press, and then cutting them into pellets using a pelletizer. Recycled plastic pellets have a wide range of applications. In daily life, recycled pellets can be used to manufacture various plastic bags, buckets, basins, toys, furniture, stationery, and other household items and plastic products.

[0003] Due to long-term use, recycled plastics need to undergo basic cleaning before recycling. This involves removing non-plastic components and then processing them through crushing and melting. Existing plastic granules need to have their internal oil and metal fragments separated before recycling. However, most current cleaning equipment simply rinses the granules and removes them, which is not an effective cleaning method. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a plastic particle impurity removal device, which solves the problems mentioned above.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a plastic particle impurity removal device, comprising a removal chamber, a feeding chamber separated by a first filter screen and a discharge chamber separated by a second filter screen, wherein the discharge chamber and the feeding chamber are connected by a conveying channel, a feeding port is provided at the top of the feeding chamber, and a pusher plate driven by a motor is rotatably connected to the inner cavity of the feeding chamber, wherein the top of the conveying channel is an upper filter plate for discharging oil stains, and the bottom of the conveying channel is a lower filter plate for discharging metal debris;

[0006] Both sides of the cleaning box are provided with overflow slots located above the upper filter plate, and the surface of the cleaning box located between the two overflow slots is fixed with an air jet pipe connected to an external air source. The surface of the air jet pipe is provided with air jet ports facing the overflow slots on both sides. The inner cavity of the cleaning box is filled with cleaning liquid located above the conveying channel and below the overflow slots.

[0007] It also includes a circulation mechanism located on one side of the cleaning tank to create a left-to-right water flow circulation within the cleaning tank;

[0008] It also includes an oil stain adsorption mechanism installed outside the cleaning box for treating oil stains;

[0009] The right side of the cleaning box is connected to a metal debris discharge pipe controlled by a solenoid valve. The bottom of the cleaning box has a gradually decreasing slope from left to right. Due to the slope, metal debris that has settled to the bottom accumulates at the metal debris discharge pipe under the action of water flow. Opening the discharge pipe allows for quick removal of the debris for cleaning. During use, plastic granules are added to the feeding chamber through the inlet. The plastic granules are suspended above the cleaning liquid. Then, the pusher plate rotates counterclockwise to press the plastic into the cleaning liquid for rinsing. Simultaneously, water sprays from the outlet, creating a rightward water flow. The pusher plate pushes the plastic granules to one side of the conveyor channel, where they enter the channel. Then, along the inclined conveyor channel, they move to the right under the influence of buoyancy and water flow. At the same time, the cleaning brush rotates clockwise, cleaning the plastic granules while pushing them to the right. The oil and metal debris adhering to its surface are completely cleaned off. The metal debris then sinks to the bottom through the lower filter plate, while the oil floats to the overflow trough through the upper filter plate. Air is then blown from the air jet nozzles on both sides of the jet pipe to the oil adsorption mechanism for treatment. The water containing oil falling from the overflow trough passes through the polyurethane sponge, where the superhydrophobic / superoleophilic polyurethane sponge adsorbs the oil. The water falls into the water collection hopper below. After a certain amount is collected, the water collection hopper is activated to move to the left, and the extrusion rollers squeeze the polyurethane sponge on the metal frame to squeeze out the oil inside. The oil is then collected by the guide plate into the water collection hopper and discharged through the connecting pipe. This process can quickly separate the overflowing oil and water. The separated water can be quickly recycled, and the machine can be cleaned without stopping to increase the separation effect. The cleaned plastic particles are then conveyed to the discharge chamber and output by the discharge conveyor belt, completing the cleaning process.

[0010] As a further aspect of the present invention: the inner cavity of the conveying channel is equipped with a cleaning brush that is driven to rotate by a motor. Multiple cleaning brushes are distributed at intervals in the inner cavity of the conveying channel to clean the plastic, removing all the oil and metal debris attached to its surface. Then, the metal debris sinks to the bottom through the lower filter plate, and the oil floats to the overflow trough through the upper filter plate. Then, the air jets on both sides of the jet pipe blow air to send the oil to the oil adsorption mechanism for treatment.

[0011] As a further aspect of the present invention: the circulation mechanism includes a pump fixed to the left side of the cleaning tank. The outlet of the pump is connected to a water outlet hopper located on the left side of the inner cavity of the cleaning tank, and the inlet of the pump is connected to a water pumping pipe located on the right side of the inner cavity of the cleaning tank. A filter cover covering the outside of the water pumping pipe is fixedly connected to the inner cavity of the cleaning tank. In use, the pump discharges water through the water outlet hopper, and the water pumping pipe draws water into the cleaning tank to form a circulating water path from left to right. Through the inclined upward conveying channel, the plastic particles are conveyed to the right by the impact force of the water flow while utilizing the buoyancy of the plastic itself, resulting in higher cleaning efficiency.

[0012] As a further aspect of the present invention: the conveying channel is located below the liquid surface inside the cleaning tank and gradually rises from left to right. By utilizing the height difference and the buoyancy of the plastic particles themselves, the conveying speed is accelerated, and oil stains, plastic particles and metal fragments can be quickly separated during conveying, resulting in a cleaner cleaning.

[0013] As a further aspect of the present invention: the oil stain adsorption mechanism includes a recovery box fixed to the outside of the cleaning box and a metal frame located directly above the recovery box. A polyurethane sponge is fixedly connected to the top of the metal frame. It also includes a water receiving hopper that is slidably mounted on the surface of the cleaning box by a motor drive. A squeezing roller that abuts against the surface of the polyurethane sponge is rotatably connected to one side of the water receiving hopper via a connecting plate. The bottom of the water receiving hopper is connected to an external oil stain collection mechanism via a connecting pipe. A guide plate is fixedly connected to the left side of the water receiving hopper. Water containing oil stains falling from the overflow trough passes through the polyurethane sponge and is adsorbed by the superhydrophobic / superoleophilic polyurethane sponge. The water falls into the water receiving hopper below. After collecting a certain amount, the water receiving hopper is activated to move to the left. The squeezing roller squeezes the polyurethane sponge on the metal frame, squeezing out the oil stains inside. The oil stains are collected by the guide plate into the water receiving hopper and then discharged through the connecting pipe. This allows for rapid separation of overflowing oil stains and water. The separated water can be quickly recycled, and the machine can be cleaned without stopping to increase the separation effect.

[0014] As a further aspect of the present invention: a baffle plate is fixedly connected to the top of the second filter cylinder screen. The baffle plate is located on one side of the overflow trough. The baffle plate blocks the oil on the liquid surface and prevents the oil from being transported to one side of the second filter cylinder screen, thus effectively separating the oil.

[0015] As a further aspect of the present invention: a discharge conveyor belt is provided on one side of the discharge chamber, and one side of the discharge conveyor belt extends to the outside of the cleaning box. The surface of the discharge conveyor belt is provided with a frosted surface, which enhances the friction with the plastic particles and outputs the plastic particles to complete the separation of oil and metal debris.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This invention utilizes an upwardly inclined conveying channel, which, while leveraging the buoyancy of the plastic itself, is driven by the impact force of the water flow to transport the plastic particles to the right, resulting in higher cleaning efficiency. By utilizing the height difference and the buoyancy of the plastic particles themselves, the conveying speed is accelerated, allowing for rapid separation of oil stains, plastic particles, and metal fragments during conveying, resulting in a more thorough cleaning.

[0018] 2. In this invention, multiple cleaning brushes are spaced apart in the inner cavity of the conveying channel to clean the plastic, removing all oil and metal debris attached to its surface. Then, the metal debris sinks to the bottom through the lower filter plate, while the oil floats to the overflow trough through the upper filter plate. Then, the air jets on both sides of the jet pipe blow air to send the oil to the oil adsorption mechanism for treatment.

[0019] 3. In this invention, oily water falling from the overflow trough passes through a polyurethane sponge, where the superhydrophobic / superoleophilic polyurethane sponge absorbs the oil. The water falls into a collecting hopper below, and after a certain amount is collected, the collecting hopper is activated to move to the left. The extrusion rollers squeeze the polyurethane sponge on the metal frame, squeezing out the internal oil, which is then collected by a guide plate into the collecting hopper and discharged through a connecting pipe. This allows for rapid separation of overflowing oil and water, and the separated water can be quickly recycled. Furthermore, the system can be cleaned without stopping the machine to enhance the separation effect.

[0020] 4. In this invention, by setting up an inclined surface, under the action of water flow, the metal debris that sinks to the bottom will accumulate at the metal debris discharge pipe. At this time, by opening the metal debris discharge pipe, the debris can be quickly discharged for cleaning. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the structure of the present invention;

[0022] Figure 2 This is a front view of the structure of the present invention;

[0023] Figure 3 For the present invention Figure 1 A magnified view of a portion of point A in the middle.

[0024] In the diagram: 1. Cleaning box; 2. First filter cylinder screen; 3. Second filter cylinder screen; 4. Feed inlet; 5. Pusher plate; 6. Conveying channel; 7. Lower filter plate; 8. Upper filter plate; 9. Cleaning brush; 10. Baffle plate; 11. Discharge conveyor belt; 12. Pump; 13. Water outlet; 14. Filter cover; 15. Water pumping pipe; 16. Metal scrap discharge pipe; 17. Inclined surface; 18. Metal frame; 19. Polyurethane foam; 20. Connecting plate; 21. Water receiving hopper; 22. Squeeze roller; 23. Connecting pipe; 24. Guide plate; 25. Recovery box; 26. Overflow trough; 27. Air jet pipe; 28. Air jet nozzle. Detailed Implementation

[0025] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0026] Please see Figure 1-3The present invention provides a technical solution: a plastic particle impurity removal device, including a removal box 1, a feeding chamber separated by a first filter screen 2 and a discharge chamber separated by a second filter screen 3 in the inner cavity of the removal box 1, the discharge chamber and the feeding chamber are connected by a conveying channel 6, the top of the feeding chamber is provided with a feeding port 4, the inner cavity of the feeding chamber is rotatably connected with a pusher plate 5 driven by a motor, the top of the conveying channel 6 is an upper filter plate 8 for discharging oil stains, and the bottom of the conveying channel 6 is a lower filter plate 7 for discharging metal scraps;

[0027] Both sides of the cleaning box 1 are provided with overflow slots 26 located above the upper filter plate 8, and the surface of the cleaning box 1 located between the two overflow slots 26 is fixed with an air jet pipe 27 connected to the external air source. The surface of the air jet pipe 27 is provided with air jets 28 facing the overflow slots 26 on both sides. The inner cavity of the cleaning box 1 is filled with cleaning liquid located above the conveying channel 6 and below the overflow slots 26.

[0028] It also includes a circulation mechanism installed on one side of the cleaning tank 1 to form a water flow circulation from left to right within the cleaning tank 1;

[0029] It also includes an oil stain adsorption mechanism installed outside the cleaning box 1 for treating oil stains;

[0030] The right side of the cleaning box 1 is connected to a metal debris discharge pipe 16 controlled by a solenoid valve. The bottom of the cleaning box 1 has a gradually decreasing slope 17 from left to right. Due to the slope 17, metal debris that has settled to the bottom accumulates at the metal debris discharge pipe 16 under the action of water flow. Opening the metal debris discharge pipe 16 allows for quick discharge and cleaning. During use, plastic granules are added to the feeding chamber through the inlet 4. The plastic granules are suspended above the cleaning liquid. Then, the pusher plate 5 rotates counterclockwise to press the plastic into the cleaning liquid for rinsing. Simultaneously, the water outlet 13 sprays water to the right, creating a water flow. The pusher plate 5 pushes the plastic granules to one side of the conveyor channel 6, where they enter the channel. Then, along the inclined conveyor channel 6, they move to the right under the influence of buoyancy and water flow. At the same time, the cleaning brush 9 rotates clockwise, cleaning the plastic granules while pushing them to the right, removing any oil adhering to their surface. All dirt and metal debris are cleaned up. The metal debris settles to the bottom through the lower filter plate 7, while the oil floats to the overflow trough 26 through the upper filter plate 8. Then, air is blown from the air jets 28 on both sides of the air jet pipe 27 to the oil adsorption mechanism for treatment. The water containing oil falling from the overflow trough 26 passes through the polyurethane sponge 19 and is adsorbed by the superhydrophobic / superoleophilic polyurethane sponge 19. The water falls into the water collection hopper 21 below. After a certain amount is collected, the water collection hopper 21 is started to move to the left. The extrusion roller 22 squeezes the polyurethane sponge 19 on the metal frame 18 to squeeze out the oil inside. The oil is collected by the guide plate 24 into the water collection hopper 21 and then discharged through the connecting pipe 23. This can quickly separate the overflowing oil and water. The separated water can be quickly recycled and can be cleaned without stopping the machine to increase the separation effect. The cleaned plastic particles are transported to the discharge chamber and output by the discharge conveyor belt 11 to complete the cleaning.

[0031] The inner cavity of the conveying channel 6 is equipped with a cleaning brush 9 that is driven to rotate by a motor. Multiple cleaning brushes 9 are distributed at intervals in the inner cavity of the conveying channel 6 to clean the plastic and remove all the oil and metal debris attached to its surface. Then, the metal debris sinks to the bottom through the lower filter plate 7, and the oil floats to the overflow trough 26 through the upper filter plate 8. Then, the air jets 28 on both sides of the air jet pipe 27 blow air to send the oil to the oil adsorption mechanism for treatment.

[0032] The circulation mechanism includes a pump 12 fixed on the left side of the cleaning tank 1. The outlet of the pump 12 is connected to a water outlet 13 located on the left side of the inner cavity of the cleaning tank 1, and the inlet of the pump 12 is connected to a water pumping pipe 15 located on the right side of the inner cavity of the cleaning tank 1. A filter cover 14 covering the outside of the water pumping pipe 15 is fixedly connected to the inner cavity of the cleaning tank 1. When in use, the pump 12 discharges water through the water outlet 13, and the water pumping pipe 15 draws water into the cleaning tank 1 to form a circulating water path from left to right. Through the inclined upward conveying channel 6, the plastic particles are conveyed to the right by the impact force of the water flow while utilizing the buoyancy of the plastic itself, resulting in higher cleaning efficiency.

[0033] The conveying channel 6 is located below the liquid surface inside the cleaning tank 1 and gradually rises from left to right. By utilizing the height difference and the buoyancy of the plastic particles themselves, the conveying speed is accelerated. This allows for the rapid separation of oil stains, plastic particles, and metal debris during conveying, resulting in a cleaner cleaning.

[0034] The oil stain adsorption mechanism includes a collection box 25 fixed to the outside of the cleaning box 1 and a metal frame 18 located directly above the collection box 25. A polyurethane sponge 19 is fixedly connected to the top of the metal frame 18. It also includes a water receiving hopper 21 that is slidably mounted on the surface of the cleaning box 1 by a motor drive. One side of the water receiving hopper 21 is rotatably connected to a squeezing roller 22 that abuts against the surface of the polyurethane sponge 19 via a connecting plate 20. The bottom of the water receiving hopper 21 is connected to an external oil stain collection mechanism via a connecting pipe 23. A guide plate 24 is fixedly connected to the left side of the water receiving hopper 21, and water falls from the overflow trough 26. After the oily water passes through the polyurethane sponge 19, the superhydrophobic / superoleophilic polyurethane sponge 19 absorbs the oil. The water falls into the water collection hopper 21 below. After a certain amount is collected, the water collection hopper 21 is activated to move to the left. The extrusion roller 22 squeezes the polyurethane sponge 19 on the metal frame 18, squeezing out the oil inside. The oil is collected by the guide plate 24 into the water collection hopper 21 and then discharged through the connecting pipe 23. This allows for rapid separation of overflowing oil and water. The separated water can be quickly recycled, and the machine can be cleaned without stopping to increase the separation effect.

[0035] A baffle plate 10 is fixedly connected to the top of the second filter cylinder screen 3. The baffle plate 10 is located on one side of the overflow trough 26. The baffle plate 10 blocks the oil on the liquid surface and prevents the oil from being transported to one side of the second filter cylinder screen 3, thus effectively separating the oil.

[0036] A discharge conveyor belt 11 is provided on one side of the discharge chamber. One side of the discharge conveyor belt 11 extends to the outside of the cleaning box 1. The surface of the discharge conveyor belt 11 is provided with a frosted surface. The frosted surface enhances the friction with the plastic particles, and the plastic particles are output to complete the separation of oil and metal debris.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A plastic particle impurity removal device, comprising a removal chamber (1), a feeding chamber separated from the inner cavity of the removal chamber (1) by a first filter cylinder screen (2), and a discharge chamber separated from the inner cavity of the removal chamber (1) by a second filter cylinder screen (3), characterized in that: The discharge chamber and the discharge chamber are connected by a conveying channel (6). The top of the feeding chamber is provided with a feeding port (4). The inner cavity of the discharge chamber is rotatably connected to a pusher plate (5) driven by a motor. The top of the conveying channel (6) is an upper filter plate (8) for discharging oil, and the bottom of the conveying channel (6) is a lower filter plate (7) for discharging metal scraps. The cleaning box (1) has overflow slots (26) on both sides above the upper filter plate (8), and the surface of the cleaning box (1) located between the two overflow slots (26) is fixed with a jet pipe (27) connected to an external air source. The surface of the jet pipe (27) is provided with jet nozzles (28) facing the overflow slots (26) on both sides. The inner cavity of the cleaning box (1) is filled with cleaning liquid located above the conveying channel (6) and below the overflow slots (26). It also includes a circulation mechanism provided on one side of the cleaning tank (1) for forming a water flow circulation from left to right within the cleaning tank (1); It also includes an oil stain adsorption mechanism installed outside the cleaning box (1) for treating oil stains; The right side of the cleaning box (1) is connected to a metal debris discharge pipe (16) controlled by a solenoid valve, and the bottom of the cleaning box (1) has a slope (17) that gradually decreases from left to right.

2. The plastic particle impurity removal device according to claim 1, characterized in that: The inner cavity of the conveying channel (6) is equipped with a cleaning brush (9) that is driven to rotate by a motor, and multiple cleaning brushes (9) are distributed at intervals in the inner cavity of the conveying channel (6).

3. The plastic particle impurity removal device according to claim 1, characterized in that: The circulation mechanism includes a pump (12) fixed on the left side of the cleaning box (1), the outlet of the pump (12) is connected to a water outlet hopper (13) located on the left side of the inner cavity of the cleaning box (1), the inlet of the pump (12) is connected to a water pumping pipe (15) located on the right side of the inner cavity of the cleaning box (1), and a filter cover (14) covering the outside of the water pumping pipe (15) is fixedly connected to the inner cavity of the cleaning box (1).

4. The plastic particle impurity removal device according to claim 1, characterized in that: The conveying channel (6) is located below the liquid level inside the cleaning tank (1) and gradually rises from left to right.

5. The plastic particle impurity removal device according to claim 1, characterized in that: The oil stain adsorption mechanism includes a recycling box (25) fixed outside the cleaning box (1) and a metal frame (18) located directly above the recycling box (25). A polyurethane sponge (19) is fixedly connected to the top of the metal frame (18). It also includes a water receiving hopper (21) that is slidably installed on the surface of the cleaning box (1) by a motor drive. A squeezing roller (22) that abuts against the surface of the polyurethane sponge (19) is rotatably connected to one side of the water receiving hopper (21) through a connecting plate (20). The bottom of the water receiving hopper (21) is connected to an external oil stain collection mechanism through a connecting pipe (23). A guide plate (24) is fixedly connected to the left side of the water receiving hopper (21).

6. The plastic particle impurity removal device according to claim 1, characterized in that: The top of the second filter cylinder screen (3) is fixedly connected to a baffle plate (10), which is located on one side of the overflow trough (26) and blocks the oil stains above the liquid surface through the baffle plate (10).

7. The plastic particle impurity removal device according to claim 1, characterized in that: A discharge conveyor belt (11) is provided on one side of the discharge chamber. One side of the discharge conveyor belt (11) extends to the outside of the cleaning box (1). The surface of the discharge conveyor belt (11) is provided with a frosted surface.

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