A plastic particle iron filings filtering device

Abstract

This invention discloses a plastic particle and iron filings filtering device, specifically relating to the field of plastic processing technology. It includes a housing and a drive cabinet disposed on one side of the housing. A plastic conveying structure for guiding the movement of plastic particles is disposed on the lower part of the inner surface of the housing, and an auxiliary separation structure for separating iron filings is disposed in the middle of the inner surface of the housing. Material conveying pipes for guiding plastic particles are symmetrically fixedly connected to the front and rear of the inner surface of the housing. This invention achieves continuous conveying and transporting of plastic particles through the cooperation of the plastic conveying structure and the material conveying pipes; achieves smooth material transition through the matching cooperation of toothed plate one and toothed plate two; achieves residue-free transfer of plastic particles through the cooperation of the flip plate and the intercepting toothed plate; achieves separation of iron filings and plastic particles through the cooperation of the isolation net of the auxiliary separation structure and the aeration head; and prevents clogging of the mesh by a vibrating component striking the isolation net. Overall, it achieves continuous and stable separation of plastic particles and iron filings.

Description

Technical Field

[0001] This invention relates to the field of plastic processing technology, and in particular to a plastic particle iron filings filtering device. Background Technology

[0002] The core content of the plastic processing technology field is the technology related to various processing of plastic raw materials, semi-finished products and finished products. It revolves around the entire processing flow of plastic materials, covering multiple links such as pre-treatment, processing, molding and post-treatment of plastic raw materials. It includes sub-technical directions such as purification, screening and separation of plastic particles and removal of impurities. It involves various mechanical structures and operating methods used for plastic processing, providing a qualified material basis for the subsequent processing and application of plastics.

[0003] Chinese Patent Publication No. CN214645019U discloses a plastic particle iron filings filtering device, including a box and an installation chamber. A first servo motor is installed at both ends of the top of the box, and a magnet is installed at the bottom of one end of the box. A filter screen is installed at the bottom of the box near the magnet. An installation chamber is installed at the bottom of the box away from the magnet, and an air pump is installed inside the installation chamber near the box.

[0004] Existing technologies are prone to slippage, accumulation, and jamming during material conveying, resulting in residual plastic particles during transfer. They cannot achieve continuous and stable iron filings separation, and long-term operation will lead to a significant decrease in separation efficiency. The separated plastic particles still contain a lot of iron filings, which affects the quality of subsequent plastic processing products. Summary of the Invention

[0005] The main objective of this invention is to provide a plastic particle iron filings filtering device that can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A plastic particle and iron filings filtering device includes a housing and a drive cabinet disposed on one side of the housing. The upper side of the housing has an inlet communicating with its inner cavity, and the front end of the housing has an outlet communicating with its inner cavity. A plastic conveying structure for guiding the movement of plastic particles is disposed on the lower part of the inner surface of the housing. An auxiliary separation structure for separating iron filings is disposed in the middle of the inner surface of the housing. Material conveying pipes for guiding plastic particles are symmetrically fixedly connected to the front and rear of the inner surface of the housing. An iron filings collecting structure is disposed on the top of the inner surface of the housing. A motor and an air pump for driving the plastic conveying structure, the material conveying pipes, and the iron filings collecting structure are disposed inside the drive cabinet.

[0007] Preferably, the plastic conveying structure includes a conveyor belt mounted on the lower part of the inner surface of the housing via a sprocket, a plurality of material feeding components for moving plastic particles are fixedly connected in an array on the outer surface of the conveyor belt, and an air distribution pipe connected to an air pump inside the drive cabinet is fixedly connected to the inner part of the inner surface of the housing. A plurality of aeration heads are fixedly connected in an array at the upper end of the air distribution pipe.

[0008] Preferably, the material feeding assembly includes a connecting block one that is fixedly connected to the conveyor belt. A toothed plate one is slidably connected to the inner surface of the connecting block one by a spring. Each tooth of the toothed plate one is rotatably connected to a flap by a torsion spring. When the toothed plate one is under the isolation net, it extends out from the connecting block one and is in close contact with the lower end of the auxiliary separation structure.

[0009] Preferably, the auxiliary separation structure includes an isolation net fixedly installed in the middle of the inner surface of the housing. The portion of the inner surface of the housing above the isolation net is provided with an array of sliding grooves that are symmetrically arranged on both sides. Two sliding grooves on the same horizontal line are provided with a vibration component for striking the isolation net. The inner cavity of the housing is provided with a drive component for driving the vibration component to reciprocate.

[0010] Preferably, the oscillation assembly includes a slider that is slidably mounted on the inner surface of the chute and slidably connected to the outer surface of the adjacent limiting rod. The upper ends of the two sliders are respectively fixedly connected to compression springs that overlap with the inner wall of the chute. The two sliders are jointly fixedly connected to a connecting rod that overlaps with the driving assembly. The lower end of the outer surface of the connecting rod is arrayed and fixedly connected to a plurality of impact heads that overlap with the upper end of the isolation net. The connecting rod moves up and down cyclically under the action of the driving assembly.

[0011] Preferably, the driving assembly includes a sliding rod slidably mounted in the inner cavity of the housing, an electric push rod fixedly connected to one side of the sliding rod and fixedly mounted in the inner cavity of the housing, the sliding rod moving synchronously with the extension and retraction of the sliding rod piston rod, a plurality of racks fixedly connected in an array at the upper end of the sliding rod, and a gear rotatably connected to the inner cavity of the housing at the upper end of each rack, and a plurality of levers rotatably mounted in an array on both the left and right sides of the inner surface of the housing and connected to the gears via a connecting shaft, the levers being located at the lower part of the outer surface of adjacent connecting rods and in close contact with the outer surface of the connecting rods, when the electric push rod piston rod extends or retracts, the racks on the sliding rod drive the gears to rotate and synchronously drive the levers to rotate, causing them to drive the connecting rods to slide along the direction limited by the slide groove.

[0012] Preferably, a conveyor belt is installed on the inner surface of the material conveying pipe via symmetrically arranged sprockets. Several connecting blocks are fixedly connected in an array on the outer surface of the conveyor belt. Each of the connecting blocks is fixedly connected to an inclined toothed plate at the end away from the conveyor belt. When the toothed plate is located behind the conveyor belt, it is inclined upwards.

[0013] Preferably, the front part of the inner surface of the material conveying pipe located on the front side is connected to the plastic conveying structure, the upper end of the material conveying pipe located on the rear side is connected to the feed inlet, and an intercepting toothed plate adapted to the toothed plate is provided at the junction of the material conveying pipe located on the front side and the plastic conveying structure.

[0014] Preferably, the iron filings collection structure includes electric guide rails symmetrically installed on the upper part of the inner cavity of the outer shell. Each of the two electric guide rails is fixedly connected to an electric telescopic rod at its movable end. A rectangular block is fixedly connected to the lower end of the two electric telescopic rods. An electromagnet is fixedly installed at the lower end of the rectangular block. Collection boxes for receiving iron filings are fixedly connected to both the front and rear sides of the inner cavity of the outer shell. The electric telescopic rods retract before entering the collection boxes on both sides and extend when they leave the collection box range. The electric guide rails drive the electric telescopic rods to move back and forth via a motor.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention achieves continuous forward conveying of plastic particles on the lower surface of the isolation net through the cooperation of the conveyor belt of the plastic conveying structure and the material conveying component. The cooperation of the air distribution pipe and the aeration head generates uniform microbubbles, causing iron filings to adhere to the bubbles and float to the surface for separation. At the same time, an upward water flow is generated to lift the plastic particles and make them adhere to the lower surface of the isolation net. The cooperation of the toothed plate of the material conveying component and the spring achieves tight adhesion and scraping of the lower surface of the isolation net. The cooperation of the flip plate and the intercepting toothed plate achieves the transfer of plastic particles without residue.

[0016] 2. This invention achieves physical sieving of iron filings and plastic particles through an isolation mesh with an auxiliary separation structure. It blocks plastic particles from passing through while allowing iron filings to pass through under the influence of air bubbles. The electric push rod, rack, gear, and lever of the drive component provide stable power to the oscillation component. Through the cooperation of the connecting rod and the impact head of the oscillation component, the isolation mesh is repeatedly struck to generate oscillation, breaking up the accumulated air bubble clusters and iron filings, preventing plastic particles from getting stuck in the mesh. The movement direction of the oscillation component is restricted by the cooperation of the sliding groove and the limiting rod, ensuring that the striking action is stable and reliable.

[0017] 3. This invention achieves bidirectional material conveying by symmetrically arranged material conveying pipes. The material conveying pipes, in conjunction with the inclined toothed plates, stably receive and convey the material, preventing it from slipping and accumulating during conveying. At the same time, the mixed material is evenly dispersed into the water. The toothed plates 2 and 1 form a smooth transition channel through structural adaptation, preventing plastic particles from getting stuck at the junction. The intercepting toothed plates 2 and 3 prevent plastic particles from falling through the gaps, while triggering the flip plate to rotate and achieve residue-free transfer of plastic particles. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the outer casing of the present invention; Figure 3 This is a schematic diagram of the plastic conveying structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of a local structure at point A; Figure 5 This is the auxiliary separation structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the local structure at point B; Figure 7 This is a schematic diagram of the structure of the driving component of the present invention; Figure 8 This is a schematic cross-sectional view of the material conveying pipe of the present invention; Figure 9 This is a schematic diagram of the iron filings collection structure of the present invention.

[0019] In the diagram: 1. Outer shell; 2. Drive cabinet; 3. Feed inlet; 4. Plastic conveying structure; 41. Conveyor belt; 42. Air distribution pipe; 421. Aeration head; 43. Feeding assembly; 431. Connecting block one; 432. Flip plate; 433. Toothed plate one; 5. Discharge port; 6. Auxiliary separation structure; 61. Isolation net; 62. Drive assembly; 621. Sliding rod; 622. Rack; 623. Gear; 624. Pulley; 625. 63. Electric push rod; 64. Vibration assembly; 65. Connecting rod; 66. Slider; 67. Compression spring; 68. Impact head; 69. Slide groove; 60. Limiting rod; 70. Scraper collection structure; 71. Electric guide rail; 72. Electric telescopic rod; 73. Rectangular block; 74. Electromagnet; 75. Collection box; 81. Material conveying pipe; 82. Conveyor chain; 83. Connecting block two; 84. Toothed plate two; 85. Intercepting toothed plate. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] Example 1: A plastic particle and iron filings filtering device, see [reference] Figure 1 and Figure 2The device includes a housing 1 and a drive cabinet 2 disposed on one side of the housing 1. A feed inlet 3 communicating with the inner cavity is located on the upper side of the housing 1, and a discharge outlet 5 communicating with the inner cavity is located at the front end of the housing 1. A plastic conveying structure 4 for guiding the movement of plastic granules is located on the lower part of the inner surface of the housing 1. An auxiliary separation structure 6 for separating iron filings is located in the middle of the inner surface of the housing 1. Material conveying pipes 8 for guiding plastic granules are symmetrically fixedly connected to the front and rear of the inner surface of the housing 1. An iron filings collecting structure 7 for collecting iron filings is located on the top of the inner surface of the housing 1. The drive cabinet 2 is equipped with the plastic conveying structure 4 and the material conveying pipes 8. The motor and air pump of the iron filings collection structure 7, the inner cavity of the outer shell 1 is filled with clean water as the separation medium, the drive cabinet 2 provides the power source for all moving parts of the device, the feed port 3 is used to put in the plastic particles mixed with iron filings to be filtered, the discharge port 5 is used to discharge the plastic particles that have completed the separation of iron filings, the plastic conveying structure 4 is used to move the plastic particles on the lower surface of the isolation net 61 forward to the front material conveying pipe 8, the auxiliary separation structure 6 is used to cooperate with the air bubbles to separate the iron filings and plastic particles and prevent the mesh from being blocked, the material conveying pipe 8 is used to realize the vertical conveying of materials, and the iron filings collection structure 7 is used to collect the iron filings floating on the water surface.

[0022] In the operation of this embodiment, the plastic particles are continuously conveyed and transported through the cooperation of the plastic conveying structure 4 and the material conveying pipe 8. The material is smoothly transferred through the matching of toothed plate 1 433 and toothed plate 2 83. The plastic particles are transferred without residue through the cooperation of the flip plate 432 and the intercepting toothed plate 84. The iron filings are separated from the plastic particles through the cooperation of the isolation net 61 of the auxiliary separation structure 6 and the aeration head 421. The isolation net 61 is prevented from being blocked by the vibration component 63. The iron filings are automatically collected from the water surface by the electromagnet 74 of the iron filings collection structure 7. The whole process realizes the continuous and stable separation of plastic particles and iron filings.

[0023] Example 2: Based on Example 1, this example uses the cooperation of the conveyor belt 41 of the plastic conveying structure 4 and the material feeding component 43 to continuously feed the plastic particles on the lower surface of the isolation net 61 forward. The cooperation of the air distribution pipe 42 and the aeration head 421 generates uniform microbubbles, causing iron filings to adhere to the bubbles and float to the surface for separation. At the same time, an upward water flow is generated to lift the plastic particles and make them adhere to the lower surface of the isolation net 61. The cooperation of the toothed plate 433 of the material feeding component 43 and the spring achieves tight adhesion and scraping of the lower surface of the isolation net 61. The cooperation of the flip plate 432 and the intercepting toothed plate 84 achieves the transfer of plastic particles without residue.

[0024] For further details, please refer to [link / reference]. Figure 3The plastic conveying structure 4 includes a conveyor belt 41 mounted on the lower part of the inner surface of the outer shell 1 via a sprocket. Several material feeding components 43 for feeding plastic particles are fixedly connected in an array on the outer surface of the conveyor belt 41. The part of the inner surface of the outer shell 1 located inside the conveyor belt 41 is fixedly connected to an air distribution pipe 42 that is connected to the air pump inside the drive cabinet 2. Several aeration heads 421 are fixedly connected in an array at the upper end of the air distribution pipe 42. The conveyor belt 41 rotates horizontally under the drive of the motor inside the drive cabinet 2, driving the material feeding components 43 to move synchronously. The air distribution pipe 42 is used to evenly distribute the compressed air delivered by the air pump to each aeration head 421. The aeration head 421 converts the compressed air into a large number of microbubbles and sprays them upward. The microbubbles will preferentially adhere to the rough surface of the iron filings, reducing the overall density of the iron filings and causing them to move upward. At the same time, the rising water flow generated by the aeration head 421 can lift the plastic particles, so that the plastic particles always adhere to the lower surface of the isolation net 61.

[0025] For further details, please refer to [link / reference]. Figure 3 and Figure 4 The material feeding assembly 43 includes a connecting block 431 fixedly connected to the conveyor belt 41. A toothed plate 433 is slidably connected to the inner surface of the connecting block 431 via a spring. Each tooth of the toothed plate 433 is rotatably connected to a flap 432 via a torsion spring. When the toothed plate 433 is under the isolation net 61, it extends from the connecting block 431 and is tightly attached to the lower end of the auxiliary separation structure 6. The connecting block 431 moves synchronously with the conveyor belt 41. When the material feeding assembly 43 moves to the area under the isolation net 61… When the material is in the field, the spring inside the connecting block 431 releases its elastic force to push the toothed plate 433 outward, so that the upper end of the toothed plate 433 is in close contact with the lower surface of the isolation net 61. During the movement, the toothed plate 433 scrapes the lower surface of the isolation net 61 and pushes the plastic particles attached to the lower surface of the isolation net 61 forward. When the feeding assembly 43 moves to the turning position at both ends of the conveyor belt 41, the toothed plate 433 is squeezed by the inner wall of the outer shell 1 to overcome the spring force and retract into the connecting block 431.

[0026] In Example 3, based on Example 2, the isolation net 61 of the auxiliary separation structure 6 achieves physical sieving of iron filings and plastic particles, blocking plastic particles from passing through while allowing iron filings to pass through under the influence of air bubbles. The electric push rod 625, rack 622, gear 623 and lever 624 of the drive assembly 62 provide stable power to the vibration assembly 63. The connecting rod 631 of the vibration assembly 63 cooperates with the impact head 634 to cyclically strike the isolation net 61 to generate vibration, breaking up the accumulated air bubble clusters and iron filings, preventing plastic particles from getting stuck in the mesh. The sliding groove 64 cooperates with the limiting rod 641 to restrict the movement direction of the vibration assembly 63, ensuring that the striking action is stable and reliable.

[0027] For further details, please refer to [link / reference]. Figure 5The auxiliary separation structure 6 includes an isolation net 61 fixedly installed in the middle of the inner surface of the outer shell 1. The portion of the inner surface of the outer shell 1 above the isolation net 61 is provided with an array of sliding grooves 64 symmetrically arranged on both sides. Two sliding grooves 64 on the same horizontal line are provided with a vibration component 63 for striking the isolation net 61. The inner cavity of the outer shell 1 is symmetrically provided with a drive component 62 for driving the vibration component 63 to reciprocate. The mesh size of the isolation net 61 is smaller than the particle size of the plastic particles but larger than the particle size of the iron filings. It can block the plastic particles from passing through while allowing the iron filings to pass through under the action of air bubbles. The sliding grooves 64 provide a sliding track for the vibration component 63, limiting the movement direction of the vibration component 63 to the up and down direction. The drive component 62 provides power to the vibration component 63, driving the vibration component 63 to move up and down cyclically to strike the isolation net 61.

[0028] For further details, please refer to [link / reference]. Figure 6 and Figure 7 The oscillation assembly 63 includes sliders 632 slidably mounted on the inner surface of the slide groove 64 and slidably connected to the outer surface of the adjacent limiting rod 641. Compression springs 633, which overlap with the inner wall of the slide groove 64, are fixedly connected to the upper ends of the two sliders 632 respectively. A connecting rod 631, which overlaps with the drive assembly 62, is fixedly connected to both sliders 632. Several impact heads 634, which overlap with the upper end of the isolation net 61, are arrayed and fixedly connected to the lower end of the outer surface of the connecting rod 631. The connecting rod 631 moves up and down cyclically under the action of the drive assembly 62. The limiting rod 641 is fixedly mounted on the slide groove 641. 4. Inside, it is used to further limit the sliding direction of slider 632 and prevent slider 632 from deviating. When the drive assembly 62 pushes the connecting rod 631 upward, slider 632 slides upward along the limiting rod 641 and compresses the compression spring 633. When the drive assembly 62 disengages from the connecting rod 631, the compression spring 633 releases its elastic force to push slider 632 and connecting rod 631 to move downward quickly, so that the impact head 634 strikes the upper surface of the isolation net 61. The resulting vibration can break up the accumulated air bubble clusters and iron filings, while preventing plastic particles from getting stuck in the mesh of the isolation net 61.

[0029] For further details, please refer to [link / reference]. Figure 6 and Figure 7The drive assembly 62 includes a sliding rod 621 slidably mounted in the inner cavity of the housing 1, and an electric push rod 625 fixedly connected to one side of the sliding rod 621. The sliding rod 621 moves synchronously with the extension and retraction of the piston rod of the sliding rod 621. Several racks 622 are fixedly connected in an array at the upper end of the sliding rod 621. The upper ends of the racks 622 are all meshed with gears 623 that are rotatably connected to the inner cavity of the housing 1. Several levers 624 are rotatably mounted in an array on both the left and right sides of the inner surface of the housing 1 and are connected to the gears 623 through a connecting shaft. The levers 624 are located on the lower part of the outer surface of the adjacent connecting rods 631 and are connected to the connecting rods 625 through a connecting shaft. The outer surface of 31 is tightly attached. When the piston rod of the electric push rod 625 extends or retracts, the rack 622 on the sliding rod 621 drives the gear 623 to rotate, which in turn drives the lever 624 to rotate, causing the connecting rod 631 to slide along the restricted direction of the slide groove 64. Under the control of the drive cabinet 2, the electric push rod 625 performs reciprocating extension and retraction motion, which drives the sliding rod 621 to move reciprocally in the horizontal direction. The rack 622 moves synchronously with the sliding rod 621, and drives the gear 623 to rotate through gear meshing transmission. The gear 623 drives the lever 624 to rotate synchronously through the connecting shaft. During the rotation of the lever 624, it pushes the connecting rod 631 upward, thereby driving the oscillation component 63.

[0030] Example 4: Based on Example 3, this example uses symmetrically arranged material conveying pipes 8 to achieve bidirectional material conveying. The conveyor belt 81 of the material conveying pipe 8 cooperates with the inclined toothed plates 83 to stably receive and convey the material, preventing the material from slipping and accumulating during the conveying process. At the same time, the mixed material is evenly dispersed into the water. The toothed plates 83 and 433 are structurally adapted to form a smooth transition channel, preventing plastic particles from getting stuck at the junction. The cooperation between the intercepting toothed plates 84 and 83 prevents plastic particles from falling through the gaps, and at the same time triggers the rotation of the flip plate 432 to achieve the transfer of plastic particles without residue.

[0031] For further details, please refer to [link / reference]. Figure 8 The inner surface of the material conveying pipe 8 is equipped with a conveyor belt 81 via symmetrical sprockets. Several connecting blocks 82 are fixedly connected to the outer surface of the conveyor belt 81 in an array. Each connecting block 82 is fixedly connected to a toothed plate 83 that is inclined when it is away from the conveyor belt 81. When the toothed plate 83 is located behind the conveyor belt 81, it is inclined upward. The conveyor belt 81 is driven by the motor inside the drive cabinet 2 to rotate in a cycle, which drives the connecting blocks 82 and the toothed plate 83 to move synchronously. The inclined toothed plate 83 can stably support the material and prevent the material from slipping during the conveying process. When the toothed plate 83 in the rear material conveying pipe 8 moves downward, it conveys the mixed material put into the feed port 3 to the clean water environment under the isolation net 61. When the toothed plate 83 in the front material conveying pipe 8 moves upward, it conveys the plastic granules transferred by the feeding component 43 to the discharge port 5.

[0032] For further details, please refer to [link / reference]. Figure 8 The front part of the inner surface of the material conveying pipe 8 located on the front side is connected to the discharge port 5, and the upper end of the material conveying pipe 8 located on the rear side is connected to the inlet 3. At the junction of the material conveying pipe 8 located on the front side and the discharge port 5, there is an intercepting toothed plate 84 that is compatible with the toothed plate 83. The material conveying pipe 8 on the rear side receives the mixed material to be filtered through the connection between the upper end and the inlet 3. The material conveying pipe 8 on the front side discharges the filtered plastic particles through the connection between the front part and the discharge port 5. The intercepting toothed plate 84 is compatible with the structure of the toothed plate 83. When the toothed plate 83 moves to the position of the intercepting toothed plate 84, the two can fit tightly together to prevent the plastic particles from falling back into the water below through the gap between the two. At the same time, when the toothed plate 433 moves to the position where it connects with the intercepting toothed plate 84, the flap 432 is blocked by the intercepting toothed plate 84 and rotates, transferring all the plastic particles in the tooth groove of the toothed plate 433 to the toothed plate 83.

[0033] Furthermore, this invention utilizes the cooperation of the electric guide rail 71 and the electric telescopic rod 72 of the iron filings collection structure 7 to drive the electromagnet 74 to move back and forth and adjust its height, allowing the electromagnet 74 to be close to the water surface to adsorb iron filings. The rectangular block 73, in cooperation with the electromagnet 74, stably installs the electromagnet 74 and ensures the adsorption range. By controlling the on and off of the electromagnet 74, the adsorption and release of floating iron filings are achieved. The collection box 75 receives the fallen iron filings, completing the automatic collection of iron filings without the need for frequent manual retrieval. The reciprocating movement of the electric guide rail 71 achieves full coverage collection of iron filings on the water surface, ensuring comprehensive collection and preventing iron filings from falling back into the water and affecting the separation effect.

[0034] For further details, please refer to [link / reference]. Figure 9The iron filings collection structure 7 includes two symmetrically mounted electric guide rails 71 on the upper part of the inner cavity of the outer shell 1. Each of the two electric guide rails 71 has an electric telescopic rod 72 fixedly connected to its movable end. A rectangular block 73 is fixedly connected to the lower end of each of the two electric telescopic rods 72. An electromagnet 74 is fixedly installed at the lower end of the rectangular block 73. Collection boxes 75 for receiving iron filings are fixedly connected to both the front and rear sides of the inner cavity of the outer shell 1. The electric telescopic rods 72 retract before entering the collection boxes 75 on both sides and extend when leaving the collection boxes 75. The electric guide rails 71 are driven by a motor to move the electric telescopic rods 72 back and forth. Driven by the motor inside cabinet 2, the electric telescopic rod 72 and the rectangular block 73 move synchronously. Under the control of the drive cabinet 2, the electric telescopic rod 72 extends and retracts. When the electric telescopic rod 72 leaves the range of the collection box 75, it extends, causing the electromagnet 74 to move close to the water surface. The electromagnet 74 is energized and generates a magnetic field, which attracts the iron filings floating on the water surface to its lower surface. When the electric telescopic rod 72 moves above the collection box 75, the electric telescopic rod 72 retracts, causing the electromagnet 74 to rise. At the same time, the electromagnet 74 is de-energized and loses its magnetism. The attracted iron filings fall into the collection box 75 under the action of gravity, completing the collection.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A plastic particle iron filings filtering device, comprising a housing (1) and a drive cabinet (2) disposed on one side of the housing (1), wherein an inlet (3) communicating with its inner cavity is provided on one side of the upper end of the housing (1), and an outlet (5) communicating with its inner cavity is provided at the front end of the housing (1), characterized in that: The lower part of the inner surface of the outer shell (1) is provided with a plastic conveying structure (4) for guiding the movement of plastic particles. The middle part of the inner surface of the outer shell (1) is provided with an auxiliary separation structure (6) for separating iron filings. The inner surface of the outer shell (1) is symmetrically connected with a material conveying pipe (8) for guiding plastic particles. The top of the inner surface of the outer shell (1) is provided with an iron filings collection structure (7) for collecting iron filings. The inner side of the drive cabinet (2) is provided with a motor and an air pump for driving the plastic conveying structure (4), the material conveying pipe (8), and the iron filings collection structure (7).

2. The plastic particle and iron filings filtering device according to claim 1, characterized in that: The plastic conveying structure (4) includes a conveyor belt (41) mounted on the lower part of the inner surface of the outer shell (1) via a sprocket. Several material feeding components (43) for moving plastic particles are fixedly connected in an array on the outer surface of the conveyor belt (41). An air equalization pipe (42) connected to the air pump inside the drive cabinet (2) is fixedly connected to the inner part of the inner surface of the outer shell (1). Several aeration heads (421) are fixedly connected in an array at the upper end of the air equalization pipe (42).

3. The plastic particle and iron filings filtering device according to claim 2, characterized in that: The feeding assembly (43) includes a connecting block (431) fixedly connected to the conveyor belt (41). A toothed plate (433) is slidably connected to the inner surface of the connecting block (431) by a spring. Each tooth of the toothed plate (433) is rotatably connected to a flap (432) by a torsion spring. When the toothed plate (433) is under the isolation net (61), it extends out from the connecting block (431) and is tightly attached to the lower end of the auxiliary separation structure (6).

4. The plastic particle and iron filings filtering device according to claim 1, characterized in that: The auxiliary separation structure (6) includes an isolation net (61) fixedly installed in the middle of the inner surface of the outer shell (1). The portion of the inner surface of the outer shell (1) above the isolation net (61) is provided with an array of sliding grooves (64) symmetrically arranged on the left and right. Two sliding grooves (64) on the same horizontal line are provided with an oscillation component (63) for striking the isolation net (61). The inner cavity of the outer shell (1) is provided with a drive component (62) symmetrically arranged on the left and right to drive the oscillation component (63) to reciprocate.

5. The plastic particle and iron filings filtering device according to claim 4, characterized in that: The oscillation assembly (63) includes a slider (632) that is slidably installed on the inner surface of the slide groove (64) and slidably connected to the outer surface of the adjacent limiting rod (641). The upper ends of the two sliders (632) are respectively fixedly connected to a compression spring (633) that overlaps with the inner wall of the slide groove (64). The two sliders (632) are jointly fixedly connected to a connecting rod (631) that overlaps with the drive assembly (62). The lower end of the outer surface of the connecting rod (631) is fixedly connected to an array of impact heads (634) that overlap with the upper end of the isolation net (61). The connecting rod (631) moves up and down cyclically under the action of the drive assembly (62).

6. The plastic particle and iron filings filtering device according to claim 5, characterized in that: The drive assembly (62) includes a sliding rod (621) slidably mounted in the inner cavity of the housing (1). An electric push rod (625) is fixedly connected to one side of the sliding rod (621) in the inner cavity of the housing (1). The sliding rod (621) moves synchronously with the extension and retraction of the piston rod of the sliding rod (621). Several racks (622) are fixedly connected in an array at the upper end of the sliding rod (621). The upper ends of the racks (622) are all meshed with gears (623) that are rotatably connected to the inner cavity of the housing (1). On the inner surface of the device, several levers (624) are rotatably mounted in an array on both the left and right sides and are connected to the gear (623) via a connecting shaft. The levers (624) are located on the lower part of the outer surface of the adjacent connecting rod (631) and are in close contact with the outer surface of the connecting rod (631). When the piston rod of the electric push rod (625) extends or retracts, the gear (623) is driven to rotate through the rack (622) on the sliding rod (621) and the levers (624) are driven to rotate, so that the connecting rod (631) is driven to slide along the sliding groove (64) in the restricted direction.

7. The plastic particle and iron filings filtering device according to claim 1, characterized in that: The inner surface of the material conveying pipe (8) is equipped with a conveyor belt (81) through symmetrical sprockets. A number of connecting blocks (82) are fixedly connected in an array on the outer surface of the conveyor belt (81). A toothed plate (83) is fixedly connected to one end of each connecting block (82) away from the conveyor belt (81). The toothed plate (83) is inclined when it is located behind the conveyor belt (81).

8. The plastic particle and iron filings filtering device according to claim 7, characterized in that: The front part of the inner surface of the material conveying pipe (8) located on the front side is connected to the plastic conveying structure (4), the upper end of the material conveying pipe (8) located on the rear side is connected to the feed inlet (3), and an intercepting toothed plate (84) adapted to the toothed plate (83) is provided at the junction of the material conveying pipe (8) located on the front side and the plastic conveying structure (4).

9. The plastic particle and iron filings filtering device according to claim 1, characterized in that: The scrap collection structure (7) includes electric guide rails (71) symmetrically installed on the upper part of the inner cavity of the outer shell (1). The movable ends of the two electric guide rails (71) are fixedly connected to electric telescopic rods (72). The lower ends of the two electric telescopic rods (72) are fixedly connected to a rectangular block (73). An electromagnet (74) is fixedly installed at the lower end of the rectangular block (73). Collection boxes (75) for receiving scrap are fixedly connected to the front and rear sides of the inner cavity of the outer shell (1). The electric telescopic rods (72) retract before entering the collection boxes (75) on both sides. The electric telescopic rods (72) extend when they leave the range of the collection boxes (75). The electric guide rails (71) drive the electric telescopic rods (72) to move back and forth through the motor.

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