A plastic recycling device for plastic product production and a method of using the same

Abstract

The application relates to the technical field of plastic recycling treatment, in particular to a plastic recycling device for plastic product production and a use method thereof, which comprises a cleaning tank, a circulating pump is installed at the left end of the cleaning tank, a water suction pipe of the circulating pump is connected with the right end of the cleaning tank, and a water discharge pipe of the circulating pump faces the left end of the inner wall of the cleaning tank. The plastic recycling device for plastic product production forms a cooperation structure through the cooperation of the cleaning arc plate fixed on the inner wall of the cleaning sleeve, the brush washing plate and the auxiliary brush plate which are distributed in a staggered mode on the cleaning shaft. When the brush washing plate rotates, the plastic fragments floating on the liquid surface are forced to be extruded and attached to the inner wall of the cleaning arc plate through the inclined surface structure of the brush washing plate, so that the plastic fragments continuously rub against the surfaces of the cleaning arc plate and the brush washing plate during the sliding process, the oil stains and the silt impurities attached to the surfaces are effectively stripped, and the problem that the floating plastic cannot fully contact the brush washing structure in the traditional device is solved fundamentally, and the cleaning effect of single-time brush washing is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of plastic recycling technology, specifically to a plastic recycling device for plastic product manufacturing, which is particularly suitable for continuous multi-stage washing and recycling of floating plastic fragments (such as polyethylene, polypropylene, etc.) with a density less than water after the crushing of waste plastic products and production scraps. Background Technology

[0002] With the widespread use of plastic products in industrial production and daily life, the amount of waste plastic generated is increasing year by year. Recycling and reusing waste plastics can not only effectively alleviate the pressure of petroleum resource shortages, but also reduce the white pollution caused by plastic waste, making it an important way to achieve green and sustainable development.

[0003] The production of plastic products generates a large amount of scrap material. Furthermore, recycled waste plastic products must undergo core processes such as crushing, washing, drying, and granulation before reprocessing. The quality of the washing process directly determines the purity and quality of the final recycled plastic granules. Existing technology mainly categorizes washing equipment for crushed plastic fragments into two types: agitated washing tanks and drum washing machines. However, both have significant drawbacks when handling floating plastic fragments.

[0004] Incomplete cleaning: Floating plastic fragments have a density less than water and remain suspended above the liquid surface. The water flow generated by traditional stirring cleaning methods easily disperses the fragments, preventing them from making sufficient and continuous contact with the brushing structure. As a result, impurities such as oil, mud, and label adhesive attached to the surface are difficult to remove effectively, leaving a large amount of pollutants after cleaning.

[0005] Low cleaning efficiency: Most existing devices adopt a single-cleaning mode, which has limited cleaning effect. In order to achieve qualified cleaning standards, plastic fragments need to be repeatedly poured into the cleaning equipment for multiple cleanings, which greatly extends the production cycle and increases energy consumption and labor costs.

[0006] There are blind spots in cleaning: During the cleaning process, plastic fragments tend to accumulate in the corners of the equipment or in areas with slow water flow. The fragments in the accumulated areas cannot be effectively scrubbed, forming blind spots in cleaning, which leads to inconsistent cleaning quality of the same batch of products.

[0007] Low level of automation: It is difficult to achieve automatic collection and continuous transportation of floating plastic fragments, requiring frequent manual retrieval and transfer of fragments, making it impossible to form a continuous cleaning production line and failing to meet the needs of large-scale industrial production.

[0008] Therefore, developing a plastic recycling device for plastic product manufacturing that can fully contact, continuously transport, and perform multi-stage cleaning of floating plastic fragments is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0009] The purpose of this invention is to provide a plastic recycling device for plastic product manufacturing and its usage method, to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: A plastic recycling device for plastic product manufacturing includes a cleaning tank. A circulation pump is installed at the left end of the cleaning tank. The suction pipe of the circulation pump is connected to the right end of the cleaning tank, and the drain pipe of the circulation pump faces the left end of the inner wall of the cleaning tank. A plastic crusher is installed on the left side of the cleaning tank, and a conveyor for removing washed plastic fragments is installed on the right side of the cleaning tank.

[0010] The inner wall of the cleaning tank is rotatably connected to the left and right sides of the cleaning shaft, and the left end of the cleaning shaft extends to the outside of the cleaning tank and is connected to the motor drive that is fixedly installed at the left end of the cleaning tank.

[0011] A cleaning sleeve fitted on the outside of the cleaning shaft is fixedly installed on the bottom of the inner wall of the cleaning tank. At least one cleaning arc plate is fixedly installed on the inner wall of the cleaning sleeve. A collecting arc plate and a limiting hollow plate are fixedly connected to the right end of the cleaning arc plate in sequence. An eccentric groove fitted on the outside of the cleaning shaft is opened in the middle of the limiting hollow plate.

[0012] At least one set of circumferentially distributed scrubbing plates are fixedly connected to the cleaning shaft located on the inner side of the cleaning arc plate. When the scrubbing plates rotate, they can squeeze and adhere the plastic fragments to the inner wall of the cleaning arc plate for scrubbing.

[0013] Preferably, at least one connecting rod is fixedly connected to the side of the cleaning shaft, and a Z-shaped rod is rotatably connected to the end of the connecting rod away from the cleaning shaft. One end of the Z-shaped rod passes through the connecting rod and is fixedly connected to a collection frame with an opening facing downwards. An arc-shaped plate is movably sleeved on the other end of the Z-shaped rod. The arc-shaped plate is slidably positioned in an annular groove opened on the left side of the limiting hollow plate. The annular groove and the eccentric groove are concentric.

[0014] The inner wall of the collection frame is provided with an automatically opening and closing plate. A swing rod is hinged to the left side of the inner wall of the collection frame. A ball is fixedly connected to the lower end of the swing rod. The swing rod and the opening and closing plate are connected by a T-shaped deflection plate and a sleeve frame. An arc-shaped extrusion plate for squeezing the ball to drive the swing rod to deflect is fixedly installed on the lower side of the collection arc plate.

[0015] Preferably, a drive gear is fixedly sleeved on the cleaning shaft, and a counterweight frame is movably sleeved on the cleaning shaft. The drive gear is located in the gear cavity inside the counterweight frame. At least one cleaning groove is opened on the inner wall of the counterweight frame. An arc-shaped cleaning shell with brush bristles on the inner wall is detachably installed in the cleaning groove. An auger rod is rotatably connected to the end of the inner wall of the cleaning groove. The end of the auger rod extends into the gear cavity and is fixedly installed with a driven gear that meshes with the drive gear. A guide plate is installed at the bottom of the counterweight frame.

[0016] Preferably, the number of cleaning arc plates is three, and the three cleaning arc plates are distributed at equal intervals along the cleaning axis.

[0017] Preferably, the number of the washing plates is two sets, with six in each set, and the two sets of washing plates are staggered; the washing plate is composed of a sloping panel and a sloping arc plate fixedly connected together, and the sloping panel can push water flow and plastic fragments when it rotates; auxiliary brush plates are fixedly connected to opposite sides of the two sets of washing plates.

[0018] Preferably, the number of connecting rods is six, and the six connecting rods and their corresponding collecting arc plates are on the same vertical plane; the six collecting frames are grouped in pairs, and the outer walls of the two collecting frames in the same group are hinged with auxiliary connecting plates.

[0019] Preferably, a rectangular plate is fixedly sleeved in the middle of the swing arm; arc-shaped fixing plates fixed to the inner wall of the collection frame are attached to both sides of the swing arm, and a limiting slide plate is slidably arranged between the two arc-shaped fixing plates. One end of the limiting slide plate is attached to the swing arm, and the other end is attached to the cover plate hinged to the top of the collection frame; a T-shaped deflection plate is hinged to the side of the swing arm, and the end of the T-shaped deflection plate is slidably sleeved in the frame. The end of the frame away from the T-shaped deflection plate is hinged to the opening and closing plate, and the opening and closing plate is hinged to the inner wall of the collection frame.

[0020] Preferably, there are two cleaning tanks, which are symmetrically arranged on the inner wall of the counterweight frame; there are two driven gears, which are staggered and meshed, with the front driven gear meshing with the driving gear.

[0021] A method for using a plastic recycling device for plastic product manufacturing includes the following steps:

[0022] S1. After the device is started, the front-end plastic crusher crushes the whole piece of waste plastic or production scrap into plastic fragments of uniform size and arranges them above the liquid surface at the left end of the cleaning tank. At the same time, the circulation pump at the left end of the cleaning tank runs, with its suction pipe drawing water from the right end of the cleaning tank and its drain pipe spraying water towards the left end, forming a directional water flow from left to right in the tank, continuously pushing the crushed plastic fragments to the inlet of the cleaning sleeve, avoiding disorderly floating and accumulation of fragments.

[0023] S2. The motor drives the cleaning shaft to rotate clockwise. Two sets of circumferentially staggered scrubbing plates fixed on the cleaning shaft rotate synchronously. The inclined structure of the scrubbing plates has two functions: first, it pushes the water flow to move the plastic fragments forward along the inner wall of the cleaning arc plate; second, it forces the plastic fragments that were originally floating on the liquid surface to be squeezed and adhered to the inner wall of the cleaning arc plate fixed to the inner wall of the cleaning sleeve. This causes the fragments to generate continuous friction with the scrubbing plates, auxiliary brush plates and the inner wall of the cleaning arc plate during the sliding process, effectively removing surface oil, mud, label adhesive and other impurities. When the scrubbing plates separate from the cleaning arc plate, the fragments float back up due to buoyancy. The continuous action of multiple sets of staggered scrubbing plates achieves multiple repeated scrubbing.

[0024] S3. After the first stage of washing, the debris flows with the water to the inside of the collecting arc plate. The washing shaft drives the six connecting rods to rotate synchronously, and the collection frame connected to the end of the connecting rods by the Z-shaped rods moves in a circular motion. Because the eccentric groove of the limiting hollow plate is eccentrically set with the washing shaft, and the arc plate at the end of the Z-shaped rod slides in the annular groove with the same center as the eccentric groove, the Z-shaped rod will rotate adaptively to ensure that the collection frame is open downwards throughout the process, accurately retrieval debris from the liquid surface. When the collection frame rotates to below the liquid surface, the water flow generates resistance on the rectangular plate in the middle of the swing rod, driving the swing rod to deflect. The opening and closing plate is opened through the T-shaped deflection plate and the sleeve frame, and the debris enters the collection frame accordingly.

[0025] S4. When the collection frame rotates above the counterweight frame, the arc-shaped extrusion plate presses the ball at the lower end of the swing arm, pushing the limit slide plate to open the cover plate. The fragments enter the cleaning tank of the counterweight frame through the guide plate. The cleaning shaft drives the drive gear to rotate, which drives the two auger rods to rotate in opposite directions through two misaligned driven gears. While conveying the fragments, it makes them fully rub against the bristles on the inner wall of the arc-shaped cleaning shell, completing a second precise brushing. Since there are three cleaning arc plates evenly distributed along the axial direction on the inner wall of the cleaning sleeve, the fragments will go through three complete "brushing-collection-secondary brushing" processes in sequence, and finally be picked up and discharged by the conveyor on the right side of the cleaning tank, and enter the subsequent drying, granulation and other recycling processing steps.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] This invention solves the problem of cleaning floating plastics through forced friction scrubbing. A cleaning arc plate fixed to the inner wall of the cleaning sleeve forms a cooperating structure with staggered brush plates and auxiliary brush plates distributed on the cleaning shaft. When the brush plates rotate, their inclined structure forces floating plastic fragments to adhere to the inner wall of the cleaning arc plate. This causes continuous friction between the plastic fragments and the surfaces of the cleaning arc plate and brush plates during sliding, effectively removing oil, dirt, and impurities from the surface. This fundamentally solves the problem in traditional devices where floating plastics cannot fully contact the scrubbing structure, significantly improving the cleaning effect of a single scrubbing.

[0028] This invention features an eccentric, non-powered collection system that enables continuous automatic conveying. It employs a limiting hollow plate eccentrically positioned to the cleaning shaft, along with a collection mechanism consisting of a Z-shaped rod, an arc-shaped plate, and a collection frame. Utilizing the eccentricity between the cleaning shaft and the eccentric groove, the collection frame maintains an open-facing position throughout its rotation with the cleaning shaft, automatically retrieval floating plastic fragments from the liquid surface. Simultaneously, an auxiliary connecting plate ensures the horizontal stability of the two collection frames in the same group, achieving non-powered automatic collection and continuous conveying of floating plastic fragments. This eliminates the need for a separate dedicated conveying mechanism, simplifying the device structure and reducing equipment costs.

[0029] This invention features a water-driven automatic opening and closing mechanism with reliable structure and low energy consumption. The collection frame contains a purely mechanical automatic opening and closing mechanism consisting of a swing arm, a ball, a T-shaped deflection plate, a frame, and an opening / closing plate. The resistance of the water flow to the rectangular plate drives the swing arm to deflect, automatically opening the opening / closing plate to collect plastic fragments. A fixed arc-shaped extrusion plate presses the ball at the lower end of the swing arm, automatically opening the cover to discharge the plastic fragments. The entire opening and closing process requires no additional power source, is simple and reliable, and significantly reduces the device's energy consumption and failure rate.

[0030] This invention features a multi-stage, cascaded cleaning system that comprehensively improves cleaning quality. It incorporates a counterweight frame and an internal gear transmission system, auger rods, and an arc-shaped cleaning shell with brush bristles. When the cleaning shaft rotates, the driving gear drives two driven gears to rotate in opposite directions, which in turn drives two auger rods to transport plastic fragments in the opposite direction. This allows the fragments to fully rub against the brush bristles on the inner wall of the arc-shaped cleaning shell during transport, achieving a second, precise brushing. Simultaneously, three axially spaced, equally spaced cleaning arc plates ensure that the plastic fragments undergo three complete "squeezing and brushing - collection and transfer - secondary brushing" processes, achieving multi-stage deep cleaning and ensuring that the cleanliness of the recycled plastic meets the requirements of subsequent processing. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0032] Figure 2 This is a three-dimensional cross-sectional view of the cleaning sleeve of the present invention;

[0033] Figure 3 This is a three-dimensional cross-sectional view of the cleaning arc plate and the collecting arc plate of the present invention;

[0034] Figure 4 This is a left view of the scrubbing plate of the present invention;

[0035] Figure 5 This is a three-dimensional structural diagram of the connecting rod and the Z-shaped rod of the present invention;

[0036] Figure 6 This is a three-dimensional structural diagram of the separation state of the limiting hollow plate and the arc plate of the present invention;

[0037] Figure 7 This is a three-dimensional cross-sectional view of the collection frame of the present invention;

[0038] Figure 8 This is a three-dimensional structural diagram of the arc-shaped fixing plate and the limiting sliding plate of the present invention;

[0039] Figure 9 This is a three-dimensional structural diagram of the cleaning tank and auger rod of the present invention;

[0040] Figure 10 This is a three-dimensional structural cross-section of the counterweight frame of the present invention. Figure 1 ;

[0041] Figure 11 This is a three-dimensional structural cross-section of the counterweight frame of the present invention. Figure 2 .

[0042] In the diagram: 1. Cleaning tank; 2. Plastic crusher; 3. Conveyor; 4. Cleaning shaft; 5. Motor; 6. Cleaning sleeve; 61. Cleaning arc plate; 62. Collecting arc plate; 63. Limiting hollow plate; 64. Eccentric groove; 7. Brushing plate; 71. Auxiliary brush plate; 8. Connecting rod; 81. Z-shaped rod; 82. Collecting frame; 83. Arc plate; 84. Ring groove; 85. Auxiliary connecting plate; 86. Arc extrusion plate; 9. Swing rod; 91. Sphere; 92. Rectangular plate; 93. Arc fixing plate; 94. Limiting sliding plate; 95. Cover plate; 96. Sleeve frame; 97. Opening and closing plate; 98. T-shaped deflection plate; 10. Drive gear; 101. Counterweight frame; 102. Cleaning tank; 103. Screw rod; 104. Driven gear; 105. Arc cleaning shell; 106. Guide plate. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Please see Figures 1 to 11 The present invention provides a technical solution: a plastic recycling device for the production of plastic products, including a cleaning tank 1, a plastic crusher 2 installed on the left side of the cleaning tank 1 and the plastic crusher 2 is set on the ground, and a conveyor 3 installed on the right side of the cleaning tank 1 for removing the cleaned plastic fragments in the cleaning tank 1.

[0045] The cleaning shaft 4 is rotatably connected to the left and right sides of the inner wall of the cleaning tank 1. The left end of the cleaning shaft 4 extends to the outside of the cleaning tank 1 and is fixedly connected to the motor 5. The motor 5 is installed on the left end of the cleaning tank 1.

[0046] A cleaning sleeve 6 is provided on the outside of the cleaning shaft 4, and the cleaning sleeve 6 is fixedly installed on the bottom of the inner wall of the cleaning tank 1. Three cleaning arc plates 61 are fixedly arranged on the inner wall of the cleaning sleeve 6, which are evenly distributed in a straight line along the axial direction of the cleaning shaft 4. A collecting arc plate 62 is fixedly connected to the right end of the cleaning arc plate 61. A limiting hollow plate 63 is fixedly connected to the right end of the collecting arc plate 62. The limiting hollow plate 63 is fixed on the inner wall of the cleaning sleeve 6, and an eccentric groove 64 is provided in the middle of the limiting hollow plate 63. The eccentric groove 64 is eccentrically located on the outside of the cleaning shaft 4.

[0047] Two sets of circumferentially distributed brush plates 7 are fixedly connected to the cleaning shaft 4 located on the inner side of the cleaning arc plate 61. Each set of brush plates 7 has six brush plates. The two sets of brush plates 7 are staggered. The brush plates 7 are composed of a sloping panel and a sloping arc plate fixedly connected. When the sloping panel rotates, it has the function of pushing water flow, thereby achieving the purpose of pushing plastic fragments.

[0048] Each of the two sets of scrubbing plates 7 has an auxiliary brush plate 71 fixedly connected to one side of the opposite side. When the scrubbing plate 7 and the auxiliary brush plate 71 rotate to be directly above the cleaning shaft 4, they can squeeze the plastic fragments to stick to the inner wall of the cleaning arc plate 61. The plastic fragments are scrubbed by the friction between the inner wall of the cleaning arc plate 61 and the plastic fragments.

[0049] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 11 As shown, six connecting rods 8 are fixedly connected to the side of the cleaning shaft 4, and the six connecting rods 8 and their corresponding collecting arc plates 62 are on the same vertical plane. A Z-shaped rod 81 is rotatably connected to the end of the connecting rod 8 away from the cleaning shaft 4. One end of the Z-shaped rod 81 movably passes through the connecting rod 8 and is fixedly connected to the collecting frame 82, with the collecting frame 82 opening downwards. An arc plate 83 is movably sleeved on the other end of the Z-shaped rod 81. The end of the arc plate 83 is chamfered, and the arc plate 83 is limited and slidably set in the limiting space. The annular groove 84 is opened on the left side of the core plate 63, and the annular groove 84 and the eccentric groove 64 are set in the same circle. Since the cleaning shaft 4 and the eccentric groove 64 are eccentrically set, when the cleaning shaft 4 drives the connecting rod 8 to rotate, it pulls the Z-shaped rod 81 to move synchronously, causing the arc plate 83 at the end of the Z-shaped rod 81 to slide in the annular groove 84, ensuring that the opening of the collection frame 82 is kept facing downward, so as to collect the plastic fragments floating on the liquid surface, which is convenient for the subsequent transportation of the plastic fragments to the corresponding cleaning tank 102.

[0050] The six collection frames 82 are grouped into two sets, and the outer walls of the two collection frames 82 in the same set are hinged to an auxiliary connecting plate 85. The auxiliary connecting plate 85 ensures that the two collection frames 82 connected to it maintain a horizontal state during rotation.

[0051] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 11 As shown, a swing rod 9 is hinged to the upper left side of the inner wall of the collection frame 82. A ball 91 is fixedly connected to the lower end of the swing rod 9, and a rectangular plate 92 is fixedly sleeved in the middle of the swing rod 9.

[0052] Arc-shaped fixing plates 93 are attached to both sides of the swing arm 9, and the arc-shaped fixing plates 93 are fixed to the left side of the inner wall of the collection frame 82. A limiting slide plate 94 is slidably arranged between the arc-shaped fixing plates 93. One end of the limiting slide plate 94 is attached to the swing arm 9, and the other end is attached to the cover plate 95 hinged to the top of the collection frame 82.

[0053] A T-shaped deflection plate 98 is hinged to the side of the swing arm 9. A sleeve frame 96 is provided at the end of the T-shaped deflection plate 98. An opening and closing plate 97 is hinged to the end of the sleeve frame 96 away from the T-shaped deflection plate 98. The opening and closing plate 97 is hinged to the inner wall of the collection frame 82. The end of the T-shaped deflection plate 98 can slide within the sleeve frame 96.

[0054] An arc-shaped extrusion plate 86 is installed on the lower side of the collecting arc plate 62, and the arc-shaped extrusion plate 86 is used to extrude the ball 91 at the lower end of the swing arm 9, causing the swing arm 9 to deflect.

[0055] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 11 As shown, a drive gear 10 is fixedly sleeved on the cleaning shaft 4, and a counterweight frame 101 is movably sleeved on the cleaning shaft 4 to ensure that the counterweight frame 101 does not rotate when the cleaning shaft 4 rotates, relying on its own weight. The drive gear 10 is located in the gear cavity opened inside the counterweight frame 101. Two cleaning grooves 102 are opened on the inner wall of the counterweight frame 101. An arc-shaped cleaning shell 105 is detachably installed in the cleaning groove 102, and brush bristles are glued inside the arc-shaped cleaning shell 105. The ends of the inner walls of the two cleaning grooves 102 are rotatably connected to the auger rods 103. The ends of the two auger rods 103 extend into the gear cavity and are fixedly installed with driven gears 104. The two driven gears 104 are staggered and meshed, and the front driven gear 104 meshes with the drive gear 10.

[0056] A guide plate 106 is installed at the bottom of the counterweight frame 101.

[0057] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 11 As shown, a circulation pump is installed at the left end of the cleaning tank 1 to ensure the flow of liquid inside the cleaning tank 1. The suction pipe of the circulation pump is connected to the right end of the cleaning tank 1, and the drain pipe of the circulation pump faces the left end of the inner wall of the cleaning tank 1 to rinse the plastic inside the cleaning tank 1.

[0058] The working process of this plastic recycling device used in the production of plastic products is as follows:

[0059] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 11 As shown, when the device cleans plastic fragments floating on the liquid surface after crushing, the plastic is crushed by the plastic crusher 2 and discharged into the cleaning tank 1. At this time, the circulation pump runs and pushes the plastic fragments in the cleaning tank 1 into the cleaning sleeve 6. Then, the motor 5 drives the brush plate 7 to rotate and cooperate with the inclined arc plate at its end to squeeze the plastic fragments on the liquid surface inside the cleaning arc plate 61 and stick them to the cleaning arc plate 61, causing the plastic fragments to slide along the inner wall of the cleaning arc plate 61, thereby achieving the purpose of brushing the plastic fragments by the cooperation of the brush plate 7 and the cleaning arc plate 61.

[0060] When the scrubbing plate 7 squeezes the plastic fragments and separates them from the cleaning arc plate 61, the plastic fragments move up to the liquid surface by their own buoyancy. The device scrubs the plastic fragments multiple times with multiple scrubbing plates 7 and auxiliary scrubbing plates 71 to ensure the quality of scrubbing the plastic fragments by the scrubbing plates 7 and the cleaning arc plate 61.

[0061] After the plastic fragments are cleaned by the scrubbing plate 7 and the cleaning arc plate 61, they flow with the water to the inner side of the corresponding collecting arc plate 62. The cleaning shaft 4 drives the six connecting rods 8 to rotate, causing the collecting frame 82 at the end of the connecting rods 8 to rotate clockwise along the inner wall of the collecting arc plate 62. At this time, the rectangular plate 92 on the swing rod 9 is deflected counterclockwise by the resistance of the water, causing the T-shaped deflection plate 98 and the sleeve 96 to pull the opening and closing plate 97 to deflect and open. At this time, the plastic fragments floating on the liquid surface will enter the collecting frame 82 through the opening of the deflected opening and closing plate 97.

[0062] Then, when the swing rod 9 moves down to the lower left of the cleaning shaft 4, the rectangular plate 92 on the swing rod 9 is reversed by the water flow resistance and resets. When the lower end of the swing rod 9 touches the arc-shaped extrusion plate 86, the swing rod 9 is deflected by force and extrudes the limiting slide plate 94, causing the limiting slide plate 94 to slide between the two arc-shaped fixing plates 93, pushing the cover plate 95 to open.

[0063] At this time, the plastic fragments in the collection frame 82 flow diagonally backward with the water flow, and enter the counterweight frame 101 through the guide plate 106. At this time, the rotation of the cleaning shaft 4 drives the drive gear 10 to rotate, which in turn drives the two driven gears 104 and the auger rod 103 to rotate in opposite directions. This conveys the plastic fragments that have entered the cleaning tank 102 to the right. During the conveying process, the plastic fragments are precisely brushed and cleaned by the friction between the plastic fragments and the inner wall of the arc-shaped cleaning shell 105. The cleaned plastic fragments then enter the middle cleaning arc plate 61 and the right cleaning arc plate 61 in sequence, and the above cleaning process is repeated twice to achieve the purpose of cleaning the plastic fragments multiple times. Finally, the cleaned plastic fragments are discharged by the conveyor 3 for subsequent processing.

[0064] 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 preferred examples and are not intended to limit 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 the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic recycling device for plastic product manufacturing, comprising a cleaning tank (1), a circulation pump installed at the left end of the cleaning tank (1), the suction pipe of the circulation pump being connected to the right end of the cleaning tank (1), the drain pipe of the circulation pump facing the left end of the inner wall of the cleaning tank (1), a plastic crusher (2) installed on the left side of the cleaning tank (1), and a conveyor (3) for removing cleaned plastic fragments installed on the right side of the cleaning tank (1), characterized in that: The cleaning tank (1) has a cleaning shaft (4) rotatably connected to the left and right sides of its inner wall. The left end of the cleaning shaft (4) extends to the outside of the cleaning tank (1) and is connected to the motor (5) fixedly installed at the left end of the cleaning tank (1). The bottom of the inner wall of the cleaning tank (1) is fixedly installed with a cleaning sleeve (6) sleeved on the outside of the cleaning shaft (4). At least one cleaning arc plate (61) is fixedly provided on the inner wall of the cleaning sleeve (6). A collecting arc plate (62) and a limiting hollow plate (63) are fixedly connected to the right end of the cleaning arc plate (61) in sequence. An eccentric groove (64) is opened in the middle of the limiting hollow plate (63) and is eccentrically sleeved on the outside of the cleaning shaft (4). At least one set of circumferentially distributed scrubbing plates (7) are fixedly connected to the cleaning shaft (4) located on the inner side of the cleaning arc plate (61). When the scrubbing plates (7) rotate, they can squeeze the plastic fragments to adhere to the inner wall of the cleaning arc plate (61) for scrubbing.

2. The plastic recycling device for plastic product manufacturing according to claim 1, characterized in that: At least one connecting rod (8) is fixedly connected to the side of the cleaning shaft (4). A Z-shaped rod (81) is rotatably connected to one end of the connecting rod (8) away from the cleaning shaft (4). One end of the Z-shaped rod (81) passes through the connecting rod (8) and is fixedly connected to a collection frame (82) with its opening facing downward. An arc plate (83) is movably sleeved on the other end of the Z-shaped rod (81). The arc plate (83) is slidably positioned in the annular groove (84) opened on the left side of the limiting hollow plate (63). The annular groove (84) and the eccentric groove (64) are set at the same center. The inner wall of the collection frame (82) is provided with an opening and closing plate (97) that can be opened and closed automatically. A swing rod (9) is hinged to the left side of the inner wall of the collection frame (82). A ball (91) is fixedly connected to the lower end of the swing rod (9). The swing rod (9) and the opening and closing plate (97) are connected by a T-shaped deflection plate (98) and a sleeve frame (96). An arc-shaped extrusion plate (86) for extruding the ball (91) to drive the swing rod (9) to deflect is fixedly installed on the lower side of the collection arc plate (62).

3. A plastic recycling device for plastic product manufacturing according to claim 2, characterized in that: A drive gear (10) is fixedly sleeved on the cleaning shaft (4), and a counterweight frame (101) is movably sleeved on the cleaning shaft (4). The drive gear (10) is located in the gear cavity inside the counterweight frame (101). At least one cleaning groove (102) is opened on the inner wall of the counterweight frame (101). An arc-shaped cleaning shell (105) with brush bristles on the inner wall is detachably installed in the cleaning groove (102). An auger rod (103) is rotatably connected to the end of the inner wall of the cleaning groove (102). The end of the auger rod (103) extends into the gear cavity and is fixedly installed with a driven gear (104) that meshes with the drive gear (10). A guide plate (106) is installed at the bottom of the counterweight frame (101).

4. A plastic recycling device for plastic product manufacturing according to claim 1, characterized in that: The number of cleaning arc plates (61) is three, and the three cleaning arc plates (61) are distributed at equal intervals along the axial direction of the cleaning axis (4).

5. A plastic recycling device for plastic product manufacturing according to claim 1, characterized in that: The number of the washing plates (7) is two sets, with six in each set, and the two sets of washing plates (7) are staggered. The washing plates (7) are composed of a sloping panel and a sloping arc plate fixedly connected together. When the sloping panel rotates, it can push water flow and plastic fragments. The two sets of washing plates (7) are fixedly connected to auxiliary brush plates (71) on opposite sides.

6. A plastic recycling device for plastic product manufacturing according to claim 2, characterized in that: The number of connecting rods (8) is six, and the six connecting rods (8) and their corresponding collecting arc plates (62) are on the same vertical plane; the six collecting frames (82) are in groups of two, and the outer walls of the two collecting frames (82) in the same group are hinged with auxiliary connecting plates (85).

7. A plastic recycling device for plastic product manufacturing according to claim 2, characterized in that: A rectangular plate (92) is fixedly sleeved in the middle of the swing rod (9); an arc-shaped fixing plate (93) fixed to the inner wall of the collection frame (82) is attached to both the left and right sides of the swing rod (9); a limiting slide plate (94) is slidably arranged between the two arc-shaped fixing plates (93); one end of the limiting slide plate (94) is attached to the swing rod (9), and the other end is attached to the cover plate (95) hinged to the top of the collection frame (82); the T-shaped deflection plate (98) is hinged to the side of the swing rod (9); the end of the T-shaped deflection plate (98) is slidably sleeved in the frame (96); the end of the frame (96) away from the T-shaped deflection plate (98) is hinged to the opening and closing plate (97); the opening and closing plate (97) is hinged to the inner wall of the collection frame (82).

8. A plastic recycling device for plastic product manufacturing according to claim 3, characterized in that: There are two cleaning tanks (102), which are symmetrically opened on the inner wall of the counterweight frame (101); there are two driven gears (104), which are staggered and meshed, wherein the front driven gear (104) meshes with the driving gear (10).

9. A method of using a plastic recycling device for plastic product manufacturing, comprising using a plastic recycling device for plastic product manufacturing as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. After the device is started, the front-end plastic crusher (2) crushes the whole piece of waste plastic or production scrap into plastic fragments of uniform size and arranges them above the liquid surface at the left end of the cleaning tank (1). At the same time, the circulation pump at the left end of the cleaning tank (1) runs, and its suction pipe draws water from the right end of the cleaning tank (1) and the drain pipe sprays water towards the left end, forming a directional water flow from left to right in the tank, continuously pushing the crushed plastic fragments to the inlet of the cleaning sleeve (6) to avoid the fragments floating and accumulating in a disorderly manner. S2. The motor (5) drives the cleaning shaft (4) to rotate clockwise. The two sets of circumferentially staggered brush plates (7) fixed on the cleaning shaft (4) rotate synchronously. The inclined structure of the brush plate (7) produces two functions at the same time: first, it pushes the water flow to move the plastic fragments along the inner wall of the cleaning arc plate (61); second, it forces the plastic fragments that were originally floating on the liquid surface to be pressed and adhered to the inner wall of the cleaning arc plate (61) fixed to the inner wall of the cleaning sleeve (6). This causes the fragments to continuously rub against the brush plate (7), the auxiliary brush plate (71) and the inner wall of the cleaning arc plate (61) during the sliding process, effectively removing surface oil, mud, label glue and other impurities. When the brush plate (7) separates from the cleaning arc plate (61), the fragments float up again by buoyancy. The continuous action of multiple sets of staggered brush plates (7) achieves repeated brushing. S3. After the first stage of washing, the debris flows with the water flow to the inside of the collecting arc plate (62). The cleaning shaft (4) drives the six connecting rods (8) to rotate synchronously. The collection frame (82) connected to the end of the connecting rod (8) through the Z-shaped rod (81) moves in a circular motion. Since the eccentric groove (64) of the limiting hollow plate (63) is eccentrically set with the cleaning shaft (4), and the arc plate (83) at the end of the Z-shaped rod (81) slides in the annular groove (84) with the same center as the eccentric groove (64), the Z-shaped rod (81) will rotate adaptively to ensure that the collection frame (82) is open downward throughout the process, accurately retrieval debris from the liquid surface. When the collection frame (82) rotates to below the liquid surface, the water flow generates resistance to the rectangular plate (92) in the middle of the swing rod (9), driving the swing rod (9) to deflect. The opening and closing plate (97) is pulled open through the T-shaped deflection plate (98) and the sleeve frame (96), and the debris enters the collection frame (82) accordingly. S4. When the collection frame (82) rotates to the top of the counterweight frame (101), the arc-shaped extrusion plate (86) extrudes the ball (91) at the bottom of the swing arm (9), pushing the limit slide plate (94) to open the cover plate (95). The fragments enter the cleaning tank (102) of the counterweight frame (101) through the guide plate (106). The cleaning shaft (4) drives the drive gear (10) to rotate, and drives the two auger rods (103) to rotate in opposite directions through two misaligned driven gears (104). While conveying the fragments, it makes them fully rub against the brush bristles on the inner wall of the arc-shaped cleaning shell (105) to complete the second precise brushing. Since there are three cleaning arc plates (61) evenly distributed along the axial direction on the inner wall of the cleaning sleeve (6), the fragments will go through three complete "brushing-collection-secondary brushing" processes in sequence, and finally be picked up and discharged by the conveyor (3) on the right side of the cleaning tank (1) and enter the subsequent drying, granulation and other recycling processing processes.

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