Cleaning equipment for waste plastic recovery

Abstract

The invention relates to the technical field of waste plastic cleaning, and provides cleaning equipment for waste plastic recovery, which comprises a base and a cleaning tank mounted at the top of the base, a cover body is mounted at the top of the cleaning tank, a lifting mechanism is arranged at the bottom of the cover body, a friction mechanism is mounted at the bottom of the cover body, a filter cartridge is arranged in the cleaning tank, and a spraying structure is mounted at the top of the cleaning tank. The friction mechanism is arranged, three sets of friction cylinders distributed at equal intervals are arranged in the cleaning tank, waste plastics in different areas in the cleaning tank can be covered, the three sets of friction cylinders synchronously rotate in the cleaning process through a main gear and other assemblies, oil stains, glue, label residues and other stubborn pollutants on the surfaces of the plastics can be stripped through friction force generated by rotation, and the cleaning efficiency is improved. And when the friction cylinder rotates, water flow and plastic are driven to roll over, the 45-degree inclined spray head forms spiral water flow to wash the surface, three-dimensional cleaning is achieved in cooperation with vertical displacement of the friction cylinder, and cleaning is more thorough.

Description

Technical Field

[0001] The present invention relates to the technical field of waste plastic cleaning, in particular to a cleaning device for recycling waste plastic. Background Art

[0002] Waste plastic recycling refers to the process of collecting, sorting, processing and reusing discarded plastic products through a series of technical means, aiming to reduce plastic pollution, save resources and promote the development of a circular economy. The main sources of waste plastics include plastic bottles, packaging bags, and tableware in daily life, scraps and waste plastic products in industrial production, and mulch films and irrigation pipes in agriculture. In the recycling process, cleaning is an indispensable part. Cleaning removes contaminants on the surface of plastics, restores their physical properties and processing stability, and provides high-quality raw materials for regeneration and granulation. To this end, the patent with publication number CN119458687A discloses a cleaning device for recycling waste plastics, which relates to the technical field of waste plastics cleaning, including a cleaning box, an infeed inclined guide plate and an outfeed inclined guide plate, wherein a filter plate is fixedly provided inside the cleaning box, and a belt transmission assembly is provided above the filter plate for conveying the plastic falling on the filter plate to the outfeed inclined guide plate, and further comprising: an elastic conveying net, a lifting and flushing mechanism and a rotating flushing nozzle, wherein a plurality of elastic conveying nets are provided and are evenly distributed on the belt transmission assembly, and the elastic conveying net is used to support the plastic. The present invention conveys the crushed plastics falling into the cleaning box by means of a conveyor belt, and during the conveying process, the lifting and lowering support plate carries the curved nozzle to continuously lift and lower the elastic conveying net on the conveyor belt, thereby facilitating the turning of the plastics on the elastic conveying net, and at the same time, the curved nozzle squeezes into the plastic at close range when squeezing the elastic conveying net, facilitating the close and sufficient flushing of the flipped plastics, thereby improving the flushing effect; The above-mentioned waste plastic recycling cleaning equipment transports the broken plastics that fall into the cleaning box through a conveyor belt, thereby facilitating the turning of the plastics on the elastic conveyor net and improving the flushing effect. However, flushing can only remove loose dirt on the surface of the plastic, such as mud and dust, and has limited effect on firmly attached impurities, such as ink and label residues, which are difficult to clean thoroughly, resulting in physical contamination residues. Summary of the Invention

[0003] The purpose of the present invention is to provide a cleaning device for recycling waste plastics, so as to solve the defect of incomplete cleaning of the existing cleaning devices for recycling waste plastics.

[0004] In order to solve the above technical problems, the present application provides the following technical scheme: a cleaning device for waste plastic recycling, comprising a base and a cleaning tank installed on the top of the base; the top of the cleaning tank is provided with a cover, and the bottom of the cover is provided with a lifting mechanism; the bottom of the cover is provided with a friction mechanism; the inside of the cleaning tank is provided with a filter cartridge; the top of the cleaning tank is provided with a spraying structure; the friction mechanism comprises a friction rod installed on the bottom of the cover, and the bottom end of the cover on the top of the friction rod is provided with a main gear; a connecting block is sleeved on the middle position of the friction rod, and the bottom of the connecting block is provided with a friction cylinder; the top of the connecting block is provided with a rod cylinder.

[0005] Preferably, the lifting mechanism comprises a toothed disc installed on the bottom of the cleaning tank, and a plurality of one-way lead screws are installed on the top of the base at equal intervals around the toothed disc; the bottom of each one-way lead screw is provided with a first gear, and the first gear and the toothed disc are connected in meshing.

[0006] Preferably, the bottom of the cover outside each one-way lead screw is fixedly provided with a sleeve, and the sleeve and the one-way lead screw are connected in screwing.

[0007] Preferably, the spraying structure comprises a water pipe installed on the top of the cleaning tank, and the water pipe is provided with three groups; the water pipes are distributed at equal intervals around the inner wall of the cleaning tank.

[0008] Preferably, the outer side of each water pipe is provided with a water inlet, and the bottom of each water pipe is provided with a spray head; the spray head forms an angle of 45° with the bottom of the water pipe.

[0009] Preferably, the friction rod is provided with three groups, and the top of each friction rod is provided with a second gear; the second gear and the main gear are connected in meshing; the bottom end of each friction rod is threadedly installed with a limiting seat; and the bottom of each friction rod is provided with a limiting groove.

[0010] Preferably, the inner wall of the friction cylinder is provided with a limiting block, and the limiting block and the limiting groove form a sliding structure; and the top of the friction cylinder is fixedly provided with a connecting column.

[0011] Preferably, the rod cylinders are symmetrically distributed around the top of the connecting block; the inside of each rod cylinder is provided with a bidirectional screw rod; the bidirectional screw rod and the rod cylinder are threadedly connected; the top of each bidirectional screw rod is provided with a third gear; the bottom of the cover outside the third gear is fixedly provided with a first internal gear ring; and the first internal gear ring and the third gear are connected in meshing.

[0012] Preferably, the top of the connecting block is provided with a second internal gear ring, and a sliding structure is formed between the second internal gear ring and the connecting block, the inner wall of the second internal gear ring is provided with fourth gears at equal intervals, and the fourth gears and the second internal gear ring are in meshing connection, one side of the fourth gear is provided with a rack, and a sliding structure is formed between the rack and the connecting block, the rack and the fourth gear are in meshing connection, and the bottom of the connecting block on the inner side of the rack is provided with a connecting hole.

[0013] Preferably, the two sides of the second internal gear ring are fixedly provided with grooves, and the bottom of the connecting block in the groove is penetrated by a limiting shaft, a clamping structure is formed between the limiting shaft and the groove, and the bottom end of the limiting shaft is provided with a pull ring, and the outside of the limiting shaft is sleeved with a spring.

[0014] Compared with the prior art, the cleaning equipment for waste plastic recycling has the advantages that when cleaning waste plastics, the friction cylinder rotates and reciprocates up and down through the gear set, directly contacts the plastic fragments, mechanically peels off stubborn stains, the 45° inclined spray head forms a spiral water flow to wash the surface, cooperates with the up-and-down displacement of the friction cylinder, realizes three-dimensional cleaning, and the cleaning is more thorough. 1. By setting the friction mechanism, three groups of friction cylinders are arranged at equal intervals in the cleaning tank, which can cover different areas of waste plastics in the cleaning tank, and the three groups of friction cylinders rotate synchronously in the cleaning process through the main gear and other components, the friction generated by rotation can peel off stubborn pollutants such as oil stains, glue, label residues and the like on the surface of the plastic, and the rotation of the friction cylinder drives the water flow and the plastic to roll, promotes the full contact of the cleaning agent with the stains, shortens the cleaning time, and can adjust the friction strength according to different plastic characteristics by adjusting the rotation speed, so as to avoid damaging the regenerated material. Further, the top of the connecting block is provided with a rod cylinder, and through the cooperation of the first internal gear ring and other components, the friction cylinder can be displaced up and down while rotating in the cleaning process, so that the friction cylinder can cover a higher range, especially suitable for multi-layer plastic or thick accumulation working conditions. During displacement, the contact pressure of the friction cylinder and the plastic changes with the height, forming an impact and friction alternating effect, which enhances the stain peeling effect. Further, the second internal gear ring is arranged in the connecting block, and through the cooperation of the connecting column and the rack and other components, the friction cylinder is convenient to disassemble and assemble, and different texture friction cylinders can be replaced, such as coarse line glue removal and fine line ink removal, targeted stain removal, and improved cleaning efficiency. 2. By setting the spraying structure, three groups of spray heads inclined at 45° are arranged in the cleaning tank, forming inclined water flow, which can cover the horizontal, vertical and inclined areas on the surface of the plastic at the same time, and the spraying tracks of the three groups of spray heads are interwoven, forming a dense "water network", ensuring that all plastics in the tank can be impacted by the water flow. Furthermore, the 45° tilt angle of the nozzle allows the water flow to impact the plastic surface with optimal kinetic energy. When spraying vertically, some energy will be lost due to rebound, while oblique spraying can reduce energy loss. At the same time, the shear force of the water flow is used to peel off stubborn impurities such as oil, mud and sand, especially for the folds of film plastics. The cleaning effect is remarkable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the cover body of the present invention when viewed from above in a raised state; Figure 3 This is a schematic diagram of the three-dimensional structure of the cover body of the present invention when viewed from above in a raised state; Figure 4 This is a schematic diagram of the three-dimensional structure of the cleaning tank in a cutaway state of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the cover body of the present invention when viewed from above; Figure 6 Schematic diagram of the three-dimensional structure of the friction mechanism of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the friction rod of the present invention; Figure 8 For the present invention Figure 7 A in the middle is a partial enlarged schematic diagram of the three-dimensional structure; Figure 9 It is a schematic diagram of the three-dimensional structure of the friction cylinder of the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the limit seat of the present invention in a disassembled state; Figure 11 This is a schematic diagram of the three-dimensional structure of the friction cylinder of the present invention in a disassembled state; Figure 12 For the present invention Figure 9 A partial enlarged schematic diagram of the three-dimensional structure at point B in the middle; Figure 13 For the present invention Figure 10 Schematic diagram of the partially enlarged three-dimensional structure at point C in the middle.

[0016] The reference signs in the figure are explained as follows: 1, cover body; 2, cleaning tank; 3, lifting mechanism; 31, toothed disc; 32, one-way screw rod; 33, first gear; 34, sleeve; 4, base; 5, spraying structure; 51, water inlet; 52, water pipe; 53, spray head; 6, filter cartridge; 7, friction mechanism; 71, friction rod; 711, second gear; 712, limiting seat; 713, limiting groove; 72, friction cylinder; 721, connecting column; 722, limiting block; 73, main gear; 74, rod cylinder; 741, first inner tooth ring; 742, third gear; 743, bidirectional screw rod; 75, connecting block; 751, second inner tooth ring; 752, rack; 753, fourth gear; 754, limiting shaft; 755, spring; 756, pull ring; 757, groove; 758, connecting hole. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0018] Please refer to Figure 1 - Figure 13 The cleaning device for waste plastic recycling provided by the present application comprises a base 4 and a cleaning tank 2 installed on the top of the base 4. A cover body 1 is installed on the top of the cleaning tank 2, and a lifting mechanism 3 is arranged at the bottom of the cover body 1. A friction mechanism 7 is installed at the bottom of the cover body 1. A filter cartridge 6 is arranged in the cleaning tank 2, and a spraying structure 5 is installed on the top of the cleaning tank 2. The lifting mechanism 3 comprises a toothed disc 31 installed at the bottom of the cleaning tank 2. One-way screw rods 32 are installed at the top of the base 4 around the toothed disc 31 at equal intervals. First gears 33 are arranged at the bottom of each one-way screw rod 32. The first gears 33 are in meshing connection with the toothed disc 31. Sleeves 34 are fixed to the bottom of the cover body 1 outside the one-way screw rods 32. The sleeves 34 are in threaded connection with the one-way screw rods 32. Refer to Figure 1 - Figure 4 As shown in the figure, when the device is in use, the cover body 1 is first opened. A servo motor at the bottom of each one-way screw rod 32 is started to drive the first gear 33 below it to rotate simultaneously. One group of first gears 33 drives the toothed disc 31 in meshing connection therewith to rotate, so that the remaining two groups of first gears 33 rotate synchronously, so that the three groups of one-way screw rods 32 rotate simultaneously to drive the sleeves 34 to slide upward and lift the cover body 1. Then the waste plastic is put into the cleaning tank 2 and placed in the filter cartridge 6. After the waste plastic is placed, the servo motor is reversed to drive the cover body 1 to move downward and reset, so that a closed space is formed in the cleaning tank 2. The spraying structure 5 comprises water pipes 52 installed on the top of the cleaning tank 2, and the water pipes 52 are provided in three groups, which are equidistantly distributed with respect to the inner wall of the cleaning tank 2, the outer side of the water pipes 52 is provided with water inlets 51, and the bottom of the water pipes 52 is provided with spray heads 53, and the spray heads 53 form an included angle of 45° with the bottom of the water pipes 52; Referring to Figure 4 After the waste plastics are placed, the three groups of water inlets 51 are connected with the water pipes, water enters the water pipes 52 through the water inlets 51 and is sprayed out from the spray heads 53, the spray heads 53 form an inclined angle of 45° with the bottom of the water pipes 52, when the waste plastics are washed, the water flow generated by the 45° inclined spray heads 53 contains both horizontal component force to push the impurities to move and vertical component force to wash the surface, forming a spiral water flow path, which enhances the stripping effect on stubborn stains; The friction mechanism 7 comprises friction rods 71 installed on the bottom of the cover body 1, the bottom end of the cover body 1 at the top of the friction rod 71 is provided with a main gear 73, a connecting block 75 is sleeved on the middle position of the friction rod 71, the bottom of the connecting block 75 is provided with a friction cylinder 72, and the top of the connecting block 75 is provided with a rod cylinder 74, the friction rod 71 is provided in three groups, the top of the friction rod 71 is provided with a second gear 711, the second gear 711 and the main gear 73 are in meshing connection, the bottom of the friction rod 71 is provided with a limiting groove 713, the inner wall of the friction cylinder 72 is provided with a limiting block 722, the limiting block 722 and the limiting groove 713 form a sliding structure, the rod cylinder 74 is symmetrically distributed with respect to the top of the connecting block 75, the inside of the rod cylinder 74 is provided with a bidirectional screw rod 743, the bidirectional screw rod 743 and the rod cylinder 74 are in screw connection, the top of the bidirectional screw rod 743 is provided with a third gear 742, the bottom of the cover body 1 outside the third gear 742 is fixedly provided with a first internal gear ring 741, and the first internal gear ring 741 and the third gear 742 are in meshing connection; Referring to Figure 5 Figure 11 ​As shown, while spraying waste plastics, a servo motor is installed on the top of the main gear 73, starting the servo motor to drive the main gear 73 to rotate, so that the second gear 711 engaged with it rotates synchronously, thereby driving the friction rod 71 to rotate simultaneously, the friction rod 71 is provided with three groups, which are evenly distributed in the inside of the cleaning tank 2, the friction rod 71 rotates to drive the friction cylinder 72 at the bottom to rotate simultaneously, the surface of the friction cylinder 72 is provided with corrugation, which directly contacts with waste plastics when rotating, generates mechanical friction, and physically peels off stubborn dirt, and when the friction rod 71 rotates, the rod cylinder 74 connected therewith rotates synchronously, the inside of the rod cylinder 74 is provided with a bidirectional screw rod 743, the third gear 742 at the top thereof is engaged with the first internal tooth ring 741, the first internal tooth ring 741 is in a stationary state, when the friction rod 71 drives the rod cylinder 74 to rotate, the third gear 742 rotates along the first internal tooth ring 741, thereby driving the rod cylinder 74 to displace upward and downward, pushing the fixed connecting block 75 at the bottom to drive the friction cylinder 72 assembled therewith to displace upward and downward, through the cooperation of the limiting groove 713 and the limiting block 722, the synchronous rotation of the friction cylinder 72 when the friction rod 71 rotates is ensured, and the friction cylinder 72 displaces upward and downward along the friction rod 71, so that the friction cylinder 72 rotates while displacing upward and downward, enhancing the friction force on the surface of waste plastics, and when the friction cylinder 72 displaces upward, the waste plastics at the bottom can be turned upward, realizing friction in different areas and enhancing the decontamination effect; The bottom end of the friction rod 71 is threadedly installed with a limiting seat 712, the top of the friction cylinder 72 is fixed with a connecting column 721, the top of the connecting block 75 is installed with a second internal tooth ring 751, and the second internal tooth ring 751 and the connecting block 75 constitute a sliding structure, the inner wall of the second internal tooth ring 751 is provided with fourth gears 753 at equal intervals, and the fourth gears 753 and the second internal tooth ring 751 are engagedly connected, one side of the fourth gear 753 is installed with a rack 752, and the rack 752 and the connecting block 75 constitute a sliding structure, the rack 752 and the fourth gear 753 are engagedly connected, the bottom of the connecting block 75 inside the rack 752 is provided with a connecting hole 758, both sides of the second internal tooth ring 751 are fixed with grooves 757, and the bottom of the connecting block 75 inside the groove 757 is penetrated by a limiting shaft 754, the limiting shaft 754 and the groove 757 constitute a clamping structure, and the bottom end of the limiting shaft 754 is provided with a pull ring 756, and the outside of the limiting shaft 754 is sleeved with a spring 755; Referring to Figure 9 - Figure 13As shown, when cleaning waste plastics, a preliminary cleaning can be performed first. The bottom of the cleaning tank 2 is connected to the drain pipe, and water is directly sprayed to clean the waste plastics. At the same time, the friction cylinder 72 is started to rub and decontaminate them. After cleaning the easily removable stains, the bottom of the cleaning tank 2 is closed, and water is sprayed again to a position where the waste plastics are submerged. At the same time, the friction cylinder 72 is started to rub. The immersion of water plus the stirring and friction of the friction cylinder 72 make the cleaning effect more thorough, and the friction cylinder 72 with different textures can be replaced according to the cleaning needs. At the same time, the two sets of pull rings 756 are pulled downward to make the groove 757 lose its limit. Then, the second inner gear ring 751 is rotated to drive the fourth gear 753 meshed with it to rotate. The fourth gear 753 is meshed with the rack 752, causing the rack 752 to move and disengage from the inside of the connecting column 721. Then, the friction cylinder 72 is slid downward directly to make the connecting column 721 slide out When locking sill 752 is in the state that stretches out guide pin 721, the locking sill 712 of locking sill 714 is in the state of being locked, and locking sill 752 is in the state of being directly clamped in place by lock core 714, and lock core 71 is in the state of being directly clamped in place.

[0019] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cleaning device for recycling waste plastics, comprising a base (4) and a cleaning tank (2) mounted on the top thereof; Its characteristics are: A cover body (1) is installed on the top of the cleaning tank (2), and a lifting mechanism (3) is provided at the bottom of the cover body (1), and a friction mechanism (7) is installed at the bottom of the cover body (1); A filter cartridge (6) is provided inside the cleaning tank (2), and a spray structure (5) is installed on the top of the cleaning tank (2); The friction mechanism (7) comprises a friction rod (71) mounted on the bottom of the cover body (1), and a main gear (73) is mounted on the bottom end of the cover body (1) at the top of the friction rod (71). A connecting block (75) is sleeved on the middle position of the friction rod (71), and a friction cylinder (72) is mounted on the bottom of the connecting block (75). A rod cylinder (74) is mounted on the top of the connecting block (75).

2. A cleaning device for recycling waste plastics according to claim 1, characterized in that: The lifting mechanism (3) comprises a toothed disc (31) mounted on the bottom of the cleaning tank (2), and one-way screw rods (32) are mounted at equal intervals on the top of the base (4) outside the toothed disc (31), and a first gear (33) is provided at the bottom of each one-way screw rod (32), and the first gear (33) and the toothed disc (31) are meshedly connected.

3. The cleaning equipment for recycling waste plastics according to claim 2, characterized in that: A sleeve (34) is fixed to the bottom of the cover body (1) outside the one-way screw rod (32), and the sleeve (34) and the one-way screw rod (32) are threadedly connected.

4. The cleaning equipment for recycling waste plastics according to claim 1, characterized in that: The spray structure (5) comprises water pipes (52) installed on the top of the cleaning tank (2), and three groups of water pipes (52) are provided. The water pipes (52) are distributed at equal intervals with respect to the inner wall of the cleaning tank (2).

5. The cleaning equipment for recycling waste plastics according to claim 4, characterized in that: The outer sides of the water pipes (52) are each provided with a water inlet (51), and the bottoms of the water pipes (52) are each provided with a nozzle (53), and the nozzle (53) forms an angle of 45° with respect to the bottom of the water pipes (52).

6. The cleaning equipment for recycling waste plastics according to claim 1, characterized in that: The friction rods (71) are provided in three groups, and a second gear (711) is installed on the top of each friction rod (71), the second gear (711) is meshedly connected with the main gear (73), and a limiting seat (712) is threadedly installed on the bottom end of each friction rod (71), and a limiting groove (713) is provided on the bottom of each friction rod (71).

7. The cleaning equipment for recycling waste plastics according to claim 6, characterized in that: The inner wall of the friction cylinder (72) is provided with a limiting block (722), and a sliding structure is formed between the limiting block (722) and the limiting groove (713). The top of the friction cylinder (72) is fixed with a connecting column (721).

8. The cleaning equipment for recycling waste plastics according to claim 1, characterized in that: The rod barrel (74) is symmetrically distributed with respect to the top of the connecting block (75), and a bidirectional screw (743) is provided inside the rod barrel (74), the bidirectional screw (743) and the rod barrel (74) are threadedly engaged, and a third gear (742) is installed on the top of the bidirectional screw (743), and a first inner gear ring (741) is fixed to the bottom of the cover body (1) outside the third gear (742), and the first inner gear ring (741) and the third gear (742) are meshedly connected.

9. The cleaning equipment for recycling waste plastics according to claim 1, characterized in that: A second inner gear ring (751) is installed on the top of the connecting block (75), and a sliding structure is formed between the second inner gear ring (751) and the connecting block (75). Fourth gears (753) are arranged at equal intervals on the inner wall of the second inner gear ring (751), and the fourth gear (753) and the second inner gear ring (751) are meshingly connected. A rack (752) is installed on one side of the fourth gear (753), and a sliding structure is formed between the rack (752) and the connecting block (75), and the rack (752) and the fourth gear (753) are meshingly connected. A connecting hole (758) is provided at the bottom of the connecting block (75) inside the rack (752).

10. The cleaning equipment for recycling waste plastics according to claim 9, characterized in that: Grooves (757) are fixed on both sides of the second inner gear ring (751), and the bottom of the connecting block (75) inside the groove (757) passes through the limiting shaft (754), and a locking structure is formed between the limiting shaft (754) and the groove (757), and a pull ring (756) is provided at the bottom end of the limiting shaft (754), and a spring (755) is sleeved on the outside of the limiting shaft (754).

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