Cleaning and impurity removing device for plastic recycling

Abstract

The invention relates to the technical field of waste plastic recovery, in particular to a cleaning and impurity removing device for plastic recovery, which comprises a barrel body, an inlet is formed in the side wall of the barrel body, an outlet is further formed in the side wall of the barrel body, and a cover body is arranged on the upper cover of the barrel body; a center shaft is inserted into the cover body, a lifting rotating assembly is connected to the center shaft located above the cover body, and a second cleaning hopper is fixed to the center shaft located below the cover body; a first cleaning hopper is installed on the lower portion in the barrel body and attached to the inner wall of the barrel body, the second cleaning hopper is located above the first cleaning hopper, a filter hole plug hopper is further arranged above the second cleaning hopper, and the filter hole plug hopper is movably connected to the center shaft in a sleeved mode. Through the arrangement of the cleaning hopper, the filter hole plug hopper, the lifting rod rotating assembly and the opening and closing assembly, the problems that in the prior art, the removal effect of impurities attached to plastic fragments is poor, and impurities floating on the water surface together with plastic cannot be separated are solved.

Description

Technical Field

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

[0002] Waste plastic is one of the major environmental problems facing society today. With the widespread use of plastic products, the amount of waste plastic is increasing, and it has become an important part of global solid waste. The durability of plastic makes it difficult to degrade in the natural environment, leading to environmental pollution and ecological damage. Therefore, it is particularly important to develop effective waste plastic recycling technology.

[0003] At present, the recycling of waste plastics mainly includes mechanical recycling, chemical recycling and thermal energy recovery. Mechanical recycling is to physically crush, clean, dry and granulate waste plastics. This technology is mature and can effectively reduce production costs, but the efficiency of removing pollutants from plastics is limited. Waste plastics are usually mixed with a variety of impurities. How to efficiently remove these impurities is the key to improving recycling quality.

[0004] Chinese patent CN117921903B discloses a plastic recycling and cleaning device and method, belonging to the field of plastic cleaning technology. A plastic recycling and cleaning device comprises: a cleaning tank, a first water hole for drainage is opened on the side wall, a second water hole for water intake is opened on the bottom, and a discharge port is opened at the discharge end; two rotating shafts are provided, which are respectively rotatably connected to the two ends of the cleaning tank, and transmission rollers are provided on both rotating shafts, and a transmission belt is meshed on the transmission roller, and a push plate is provided on the transmission belt, and a water flow hole is opened on the push plate; the invention allows the plastic fragments to get more cleaning time without lengthening the cleaning tank by making the push plate reciprocate forward one distance unit and retreat 0.1-0.9 distance units. In the process of reciprocating movement of the push plate, through the design of the water flow hole, the cleaning liquid in the cleaning tank is squeezed into a water flow under the action of the water flow hole and water pressure, so that the plastic fragments are more dispersed, and the cleaning effect of the plastic fragments is further improved.

[0005] The above patent cleans the plastic fragments by water pressure through the setting of the push plate and the water flow hole, but the stubborn stains on the plastic fragments cannot be thoroughly cleaned by ordinary water pressure, and the impurities mixed in the plastic fragments can easily block the water flow holes, resulting in low operating efficiency. Summary of the invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to propose a cleaning and impurity removal device for plastic recycling. By arranging a cleaning bucket, a filter hole plugging bucket, a lifting rod rotating assembly and an opening and closing assembly, the problems of poor cleaning effect of impurities adhered to plastic fragments in the existing technology and impurities floating on the water surface with the plastic fragments cannot be separated are solved, thereby achieving the function of removing impurities on the surface of plastic fragments and separating light impurities in the plastic at the same time.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A cleaning and impurity removal device for plastic recycling comprises a barrel body, wherein the upper end of the barrel body side wall is provided with an inlet, the lower end of the barrel body side wall is also provided with an outlet, and the barrel body is covered with a cover body; a central axis is inserted into the cover body, and a lifting and rotating assembly is connected to the central axis located above the cover body, and the lifting and rotating assembly is fixed to the cover body, and a second cleaning bucket is fixed to the central axis located below the cover body, and the periphery of the second cleaning bucket is arranged in contact with the inner wall of the barrel body; a first cleaning bucket is installed in contact with the inner wall of the barrel body at the lower part of the barrel body, and the second cleaning bucket is located above the first cleaning bucket, and after the second cleaning bucket moves down and contacts the first cleaning bucket, a rubbing cavity is formed between the two; a filter hole plug bucket is also provided above the second cleaning bucket, and the filter hole plug bucket is movably sleeved on the central axis; an opening and closing assembly is provided at the bottom of the first cleaning bucket, and the bottom of the first cleaning bucket is opened and closed by the opening and closing assembly.

[0009] Preferably, a plurality of first cleaning and kneading pieces are evenly distributed on the inner wall of the first cleaning bucket; a plurality of second cleaning and kneading pieces are arranged on the outer wall of the second cleaning bucket, a plurality of filtering holes are also opened on the side wall of the second cleaning bucket, the second cleaning and kneading pieces and the filtering holes are alternately arranged on the side wall of the second cleaning bucket, and a plurality of small water filtering holes are also provided at the bottom of the second cleaning bucket.

[0010] Preferably, the lifting and rotating assembly includes a first lifting plate installed on the cover body, a second lifting plate is also provided above the first lifting plate, a first limit block and a second limit block are fixed on the right side of the first lifting plate, a screw rod is horizontally penetrated and rotatably connected on the first limit block and the second limit block, a push rod is screwed on the screw rod located between the first limit block and the second limit block, and the end of the screw rod located on the right side of the second limit block is fixedly connected to the output shaft of the first motor, and the first motor is fixed to the first lifting plate; both sides of the right end of the lower table of the second lifting plate are provided with sliding grooves, both sides of the left end of the upper surface of the first lifting plate are hinged with first connecting rods, and the other end of the first connecting rod is slidably hinged in the sliding groove; both sides of the left end of the lower surface of the second lifting plate are hinged with second connecting rods, and the other ends of the two second connecting rods are hinged at both ends of the push rod, and the middle parts of the first connecting rod and the second connecting rod are rotatably connected through a pin shaft; the central axis located above the cover body passes through the first lifting plate to the top of the second lifting plate, and limiting rings are fixed on the central axis located on both sides of the upper surface and lower surface of the second lifting plate.

[0011] Preferably, a driven bevel gear is fixed on the central shaft, and the driven bevel gear is located above the second lifting plate. A second motor is also fixed on the second lifting plate, and an active bevel gear is fixed on the output shaft of the second motor. The driven bevel gear and the active bevel gear are meshed for transmission.

[0012] Preferably, the opening and closing assembly includes a plurality of fan-shaped plates arranged at the bottom of the first cleaning bucket, the central angles of the plurality of fan-shaped plates are all arranged toward the center of the first cleaning bucket, and the plurality of fan-shaped plates form a circle when arranged horizontally and are arranged in a close fit with the bottom of the first cleaning bucket; a multi-link is hinged between each of the fan-shaped plates and the inner wall of the first cleaning bucket, and a tension spring is also connected between each of the fan-shaped plates and the inner wall of the first cleaning bucket, and one end of the multi-link and the tension spring connected to the inner wall of the first cleaning bucket is located in the kneading cavity.

[0013] Preferably, the filter pore plug bucket is provided with a plurality of strip grooves, the top outer edge of the filter pore plug bucket is also provided with a plurality of arc-shaped protrusions, and the top inner wall of the second cleaning bucket is evenly provided with a plurality of arc-shaped grooves, the arc-shaped protrusions are adapted to the arc-shaped grooves, and after the arc-shaped protrusions are adapted to the arc-shaped grooves, the strip grooves and the filter holes are staggered, and the inner wall of the second cleaning bucket and the outer wall of the filter pore plug bucket fit each other.

[0014] Preferably, after the second cleaning bucket moves down to fit the first cleaning bucket, a plurality of fan-shaped plates are pressed against the bottom of the central axis, the tension spring is stretched, and the plurality of fan-shaped plates are arranged horizontally.

[0015] Preferably, the inlet is located above the first cleaning bucket.

[0016] Preferably, the multi-link includes a first linkage rod and a second linkage rod, one end of the first linkage rod is rotatably connected to the inner wall of the first cleaning bucket, the other end of the first linkage rod is rotatably connected to the second linkage rod, and the end of the second linkage rod away from the first linkage rod is rotatably connected to the fan plate.

[0017] Preferably, the diameter of the small filtering hole is larger than the diameter of the small water filtering hole.

[0018] Preferably, the barrel body and the first cleaning bucket are fixed by clamping.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The setting of the lifting and rotating assembly of the present invention realizes that the central axis drives the second cleaning bucket to move up and down and rotate. When in use, the cleaning liquid is injected into the barrel body, and the liquid level of the cleaning liquid does not exceed the top of the first cleaning bucket. The plastic fragments enter the first cleaning bucket from the inlet, and the second cleaning bucket is moved down to fit with the first cleaning bucket. The plastic fragments in the kneading cavity formed in the middle are kneaded under the rotation of the second cleaning bucket. During kneading, the stubborn impurities adhering to the fragments are removed by the extrusion and friction generated between the second cleaning kneading member and the second cleaning kneading member. At the same time, impurities heavier than the plastic fragments accumulate at the bottom of the first cleaning bucket, and impurities lighter than the plastic fragments float to the top of the second cleaning bucket through the filtering holes provided in the second cleaning bucket, thereby realizing the separation of light impurities.

[0021] (2) The filter plug bucket of the present invention is sleeved on the central axis above the second cleaning bucket. When the second cleaning bucket moves downward and rotates to rub the plastic fragments, the centrifugal force generated by the rotation of the cleaning liquid and the plastic fragments causes the filter plug bucket to rotate freely above the second cleaning bucket. When light impurities float above the second cleaning bucket, the light impurities float to the water surface through the strip grooves. When the rotation stops, the rotation of the water gradually stops, and the filter plug bucket rotating with the water gradually rotates downward. Finally, through the rotational force of the water, the arc-shaped protrusion of the filter plug bucket cooperates with the arc-shaped groove of the second cleaning bucket, and the filter plug bucket fits and falls on the second cleaning bucket. The strip grooves and the filter holes are staggered and the filter holes are closed by the filter plug bucket, which prevents the light impurities from falling into the plastic fragments above the first cleaning bucket from the filter holes again with the water flow when the second cleaning bucket is pulled upward, thereby achieving the removal of light impurities with high removal efficiency.

[0022] (3) The opening and closing assembly of the present invention, after the second cleaning bucket moves downward, the bottom of the central axis presses the tilted multiple fan-shaped plates, under the pressure of the central axis, the spring and the multi-link are stretched, the multiple fan-shaped plates are placed horizontally, the central axis is pressed in the middle of the multiple fan-shaped plates, the multiple fan-shaped plates and the bottom of the first cleaning bucket are in a closed state, when the second cleaning bucket rotates to rub, it is prevented that the rubbed plastic fragments at the bottom of the second cleaning bucket are discharged from the bottom of the first cleaning bucket into the barrel body; after the rubbing and cleaning is completed, the central axis is moved upward, and the spring is described in the absence of external force, driving the pull rod to pull the fan-shaped plate, so that the fan-shaped plate tilts upward, and heavy impurities flow into the barrel body from the gap, and the plastic fragments float on the cleaning liquid page inside the first cleaning bucket, thereby realizing the separation of heavy impurities and plastic fragments, and the separation effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a cleaning and impurity removal device for plastic recycling of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall cross-sectional structure of a cleaning and impurity removal device for plastic recycling of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of a lifting and rotating assembly of a cleaning and impurity removal device for plastic recycling of the present invention;

[0026] Figure 4 This is a schematic diagram of the internal structure of a barrel of a cleaning and impurity removal device for plastic recycling according to the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the second cleaning bucket of a cleaning and impurity removal device for plastic recycling of the present invention;

[0028] Figure 6 It is a schematic cross-sectional structure diagram of an opening and closing assembly of a cleaning and impurity removal device for plastic recycling according to the present invention;

[0029] Figure 7 It is a structural schematic diagram of an opening and closing assembly of a cleaning and impurity removal device for plastic recycling of the present invention;

[0030] Figure 8 It is a schematic diagram of the top view of the first cleaning bucket of a cleaning and impurity removal device for plastic recycling of the present invention;

[0031] Fig. 9 The present invention is a schematic diagram of the filter hole plugging bucket structure of a cleaning and impurity removal device for plastic recycling.

[0032] In the figure: 100, barrel; 200, cover; 300, central axis; 400, lifting and rotating assembly; 500, second cleaning bucket; 600, first cleaning bucket; 700, filter hole plug bucket; 800, opening and closing assembly; 110, inlet; 120, outlet; 310, limit ring; 410, first lifting plate; 420, second lifting plate; 430, first connecting rod; 440, second connecting rod; 450, driven bevel gear; 460, active bevel gear; 470, second motor; 4 80, pin; 411, first limit block; 412, second limit block; 413, screw; 414, first motor; 415, push rod; 421, slide; 510, second cleaning and kneading member; 520, filter hole; 530, small water filter hole; 540, arc groove; 610, first cleaning and kneading member; 710, strip groove; 720, arc protrusion; 810, fan-shaped plate; 820, multi-link; 830, tension spring; 821, first linkage rod; 822, second linkage rod. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described below in conjunction with the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In addition, the embodiments of the present invention and the features in the embodiments may be combined with each other if there is no conflict.

[0034] Example

[0035] like Figures 1 to 9 As shown, a cleaning and impurity removal device for plastic recycling includes a barrel body 100, an inlet 110 is provided at the upper end of the side wall of the barrel body 100, an outlet 120 is also provided at the lower end of the side wall of the barrel body 100, and a cover body 200 is provided on the barrel body 100; a central axis 300 is inserted into the cover body 200, and a lifting and rotating assembly 400 is connected to the central axis 300 located above the cover body 200, and the lifting and rotating assembly 400 is fixed to the cover body 200, and a second cleaning bucket 500 is fixed to the central axis 300 located below the cover body 200, and the outer periphery of the second cleaning bucket 500 is in close contact with the outer periphery of the second cleaning bucket 500. The inner wall of the barrel body 100 is provided; the first cleaning bucket 600 is installed at the lower inner part of the barrel body 100 in contact with the inner wall of the barrel body 100, the second cleaning bucket 500 is located above the first cleaning bucket 600, and after the second cleaning bucket 500 moves down to fit the first cleaning bucket 600, a rubbing cavity is formed between the two; a filter hole plugging bucket 700 is also provided above the second cleaning bucket 500, and the filter hole plugging bucket 700 is movably sleeved on the central axis 300; an opening and closing assembly 800 is provided at the bottom of the first cleaning bucket 600, and the bottom of the first cleaning bucket 600 is opened and closed by the opening and closing assembly 800.

[0036] The barrel body 100 is used to hold the cleaning liquid, and the liquid level of the cleaning liquid is lower than the top of the first cleaning bucket 600; the inlet 110 is used to pass the cleaning liquid and plastic fragments, and the outlet 120 is used to discharge the cleaning liquid and heavy impurities. The first cleaning bucket 600 is used to hold the plastic fragments so that the plastic fragments float on the surface of the cleaning liquid. After the first cleaning bucket 600 and the second cleaning bucket 500 are attached to each other, the plastic fragments are contained in the rubbing cavity formed by the two; the lifting and rotating assembly 400 is used to lift and rotate the central shaft 300, so as to make the second cleaning bucket 500 fit with the first cleaning bucket 600, and drive the second cleaning bucket 500 to rotate through the central shaft 300 to achieve rubbing. The rubbing function is used to remove stubborn stains on the surface of the plastic fragments; the opening and closing component 800 is closed when the second cleaning bucket 500 rotates to prevent the plastic fragments from being discharged from the bottom of the first cleaning bucket 600 into the barrel body 100 when rubbing and cleaning the plastic fragments, causing the plastic fragments to be discharged from the outlet together with the heavy impurities. After the second cleaning bucket 500 rotates, the opening and closing component 800 pulls the central axis 300 and opens the opening and closing component 800, so that the heavy impurities are discharged to the bottom of the barrel body 100 and discharged together with the used dirty cleaning liquid, thereby separating the heavy impurities from the plastic fragments; the filter hole plugging bucket 700 is used to prevent the light impurities from mixing with the plastic fragments again after the light impurities are separated from the plastic fragments.

[0037] In this embodiment, a plurality of first cleaning and kneading members 610 are evenly distributed on the inner wall of the first cleaning bucket 600; a plurality of second cleaning and kneading members 510 are provided on the outer wall of the second cleaning bucket 500, and a plurality of filtering holes 520 are also provided on the side wall of the second cleaning bucket 500. The second cleaning and kneading members 510 and the filtering holes 520 are alternately arranged on the side wall of the second cleaning bucket 500, and a plurality of small water filtering holes 530 are also provided on the bottom side of the second cleaning bucket 500.

[0038] After the first cleaning bucket 600 is attached to the second cleaning bucket 500, the central shaft 300 is driven to rotate, and the second cleaning bucket 500 rotates, so that the plastic fragments in the kneading cavity can be squeezed and rubbed by the first cleaning kneading member 610 and the second cleaning kneading member 510 to remove the stubborn impurities adhering to the surface of the plastic fragments, thereby achieving the purpose of cleaning the plastic fragments; at the same time, when the plastic fragments are kneaded and cleaned, the light impurities pass through the filtering holes 520 set on the second cleaning bucket 500 under the buoyancy of water and rise to the top of the second cleaning bucket 500 and float on the surface of the cleaning liquid. Specifically, the aperture of the filtering holes 520 is smaller than the size of the plastic fragments, so that the plastic fragments will not float from the filtering holes 520 to the surface of the cleaning liquid, thereby avoiding the occurrence of incomplete separation; the small water filtering holes 530 set at the bottom of the side wall of the second cleaning bucket 500 are used to filter out the cleaning liquid in the second cleaning bucket 500 when the central axis rises, thereby achieving the separation of the cleaning liquid and the light impurities.

[0039] In this embodiment, the lifting and rotating assembly 400 includes a first lifting plate 410 installed on the cover body 200, and a second lifting plate 420 is also provided above the first lifting plate 410. A first limit block 411 and a second limit block 412 are fixed on the right side of the first lifting plate 410. A screw rod 413 is horizontally penetrated and rotatably connected on the first limit block 411 and the second limit block 412. A push rod 415 is screwed on the screw rod 413 located between the first limit block 411 and the second limit block 412. The end of the screw 413 located on the right side of the second limit block 412 is fixedly connected to the output shaft of the first motor 414. The first motor 414 is fixed on the first lifting plate 410; the second lifting plate 4 Slide grooves 421 are provided on both sides of the right end of the lower table 20, first connecting rods 430 are hinged on both sides of the left end of the upper surface of the first lifting plate 410, and the other end of the first connecting rod 430 is slidably hinged in the slide groove 421; second connecting rods 440 are hinged on both sides of the left end of the lower surface of the second lifting plate 420, and the other ends of the two second connecting rods 440 are hinged at both ends of the push rod 415, and the middle parts of the first connecting rod 430 and the second connecting rod 440 are rotatably connected by a pin shaft 480; the central axis 300 located above the cover body 200 passes through the first lifting plate 410 to the top of the second lifting plate 420, and limiting rings 310 are fixed on the central axis 300 located on the upper surface of the second lifting plate 420 and on both sides of the lower table.

[0040] When the central shaft 300 needs to descend, the first motor 414 is driven to rotate, and the first motor 414 drives the screw 413 to rotate. The push rod 415 threaded on the screw 413 forms a screw transmission under the rotation of the screw 413, and the push rod 415 slides toward the first motor 414. The sliding of the push rod 415 causes the second connecting rod 440 to drive the left end of the second lifting plate 420 to move downward toward the first lifting plate 410. At the same time, the first connecting rod 430 connected to the second connecting rod 440 through the pin shaft 480 slides to the right side of the slide groove 421, so that the first connecting rod 430 drives the right end of the second lifting plate 420 to move downward toward the first lifting plate 410, realizing the vertical downward displacement of the second lifting plate 420 and the descending function of the central shaft 300, further realizing the function of the second cleaning bucket 500 downwardly fitting the first cleaning bucket 600, and also realizing the function of the downward movement of the central shaft 300 pressing the fan-shaped plate 810 to reach the bottom of the closed first cleaning bucket 600. When the central shaft 300 needs to be moved upward, the first motor 414 is rotated in the opposite direction to achieve the upward movement. The limiting ring 310 limits the central shaft 300 on the second lifting plate 420 so that the central shaft 300 cannot move up and down at will, so that the central shaft 300 can move up and down in the barrel body 100.

[0041] In this embodiment, a driven bevel gear 450 is fixed on the central shaft 300, and the driven bevel gear 450 is located above the second lifting plate 420. A second motor 470 is also fixed on the second lifting plate 420, and an active bevel gear 460 is fixed on the output shaft of the second motor 470. The driven bevel gear 450 and the active bevel gear 460 are meshed and transmitted.

[0042] The second motor 470 drives the driven bevel gear 450 and the active bevel gear 460 to engage with each other, thereby achieving the rotation of the central shaft 300 and realizing the rotation function of the second cleaning bucket 500. It should be noted that the rotation direction of the second cleaning bucket 500 needs to be the same as the rotation direction of the filter hole plug bucket 700, so that the arc-shaped protrusion 720 and the arc-shaped groove 540 can cooperate with the rotation of water.

[0043] In this embodiment, the opening and closing assembly 800 includes a plurality of fan-shaped plates 810 arranged at the bottom of the first cleaning bucket 600, the central angles of the plurality of fan-shaped plates 810 are all arranged toward the center of the first cleaning bucket 600, and the plurality of fan-shaped plates 810 form a circle when arranged horizontally and are arranged in a fit with the bottom of the first cleaning bucket 600; a multi-link 820 is hingedly connected between each of the fan-shaped plates 810 and the inner wall of the first cleaning bucket 600, and a tension spring 830 is also connected between each of the fan-shaped plates 810 and the inner wall of the first cleaning bucket 600, and one end of the multi-link 820 and the tension spring 830 connected to the inner wall of the first cleaning bucket 600 are both located in the rubbing cavity.

[0044] When the central shaft 300 does not press the fan-shaped plates 810 downward, the plurality of fan-shaped plates 810 are tilted upward under the action of the elastic recovery of the tension spring 830 and the bending of the multi-link 820, so that the bottom of the first cleaning bucket 600 is in an open state, and the function of discharging heavy impurities is realized; when the central shaft 300 presses the plurality of fan-shaped plates 810 downward, the plurality of fan-shaped plates 810 are in a horizontal setting under the stretching action of the tension spring 830 and the multi-link 820, so that the bottom of the first cleaning bucket 600 is in a closed state, and when cleaning plastic fragments, the plastic fragments are prevented from being discharged from the bottom of the first cleaning bucket 600 into the barrel body 100 under the disturbance of the cleaning liquid, thereby preventing the plastic fragments from being discharged from the outlet and mixed with the heavy impurities and the cleaning liquid, and failing to achieve the purpose of recycling.

[0045] In this embodiment, the filter hole plug bucket 700 is provided with a plurality of strip grooves 710, and the top outer edge of the filter hole plug bucket 700 is also provided with a plurality of arc-shaped protrusions 720. The top inner wall of the second cleaning bucket 500 is evenly provided with a plurality of arc-shaped grooves 540, and the arc-shaped protrusions 720 are adapted to the arc-shaped grooves 540. After the arc-shaped protrusions 720 are adapted to the arc-shaped grooves 540, the strip grooves 710 and the filter holes 520 are staggered, and the inner wall of the second cleaning bucket 500 and the outer wall of the filter hole plug bucket 700 are in contact with each other.

[0046] The filter plug bucket 700 is sleeved on the central axis 300 above the second cleaning bucket 500. When the second cleaning bucket 500 moves downward and rotates to rub the plastic fragments, the centrifugal force generated by the rotation of the cleaning liquid and the plastic fragments causes the filter plug bucket 700 to rotate freely above the second cleaning bucket 500. When light impurities float above the second cleaning bucket 500, the light impurities float to the water surface through the strip groove 710. When the rotation stops, the rotation of the water gradually stops, and the filter plug bucket 700 rotating with the water gradually rotates downward, and finally passes through Due to the rotational force of water, the arc-shaped protrusion 720 of the filter hole plug bucket 700 cooperates with the arc-shaped groove 540 of the second cleaning bucket 500, and the filter hole plug bucket 700 fits on the second cleaning bucket 500, and the strip grooves 710 and the filter holes 520 are staggered. The filter holes 520 are closed by the filter hole plug bucket 700, which prevents light impurities from falling into the plastic fragments above the first cleaning bucket 600 from the filter holes 520 again with the water flow when the second cleaning bucket 500 is pulled upward, thereby achieving the removal of light impurities with high removal efficiency.

[0047] In this embodiment, the inlet 110 is located above the first cleaning bucket 600 .

[0048] The inlet 110 is arranged above the first cleaning bucket 600 to facilitate pouring the plastic fragments in. It should be noted that when the plastic fragments are introduced, the second cleaning bucket 500 needs to be located above the inlet 110 .

[0049] In this embodiment, the multi-link rod 820 includes a first linkage rod 821 and a second linkage rod 822, one end of the first linkage rod 821 is rotatably connected to the inner wall of the first cleaning bucket 600, the other end of the first linkage rod 821 is rotatably connected to the second linkage rod 822, and the end of the second linkage rod 822 away from the first linkage rod 821 is rotatably connected to the fan plate 810.

[0050] In this embodiment, the diameter of the filtering hole 520 is larger than the diameter of the small water filtering hole 530 .

[0051] The small filter holes 530 are used to filter out the cleaning liquid in the second cleaning bucket 500 to separate the cleaning liquid from light impurities.

[0052] In this embodiment, the barrel body 100 and the first cleaning bucket 600 are fixed by clamping.

[0053] The working principle of the cleaning and impurity removal device for plastic recycling of the present invention is as follows:

[0054] When in use, the cleaning liquid is poured into the barrel body 100, and the plastic fragments enter from the inlet 110, driving the first motor 414 to rotate, and the first motor 414 drives the screw 413 to rotate. The push rod 415 screwed on the screw 413 forms a screw transmission under the rotation of the screw 413, and the push rod 415 slides toward the first motor 414. The sliding of the push rod 415 causes the second connecting rod 440 to drive the left end of the second lifting plate 420 to move downward toward the first lifting plate 410. At the same time, the pin shaft The first connecting rod 430 connected to the second connecting rod 440 slides to the right side of the slide groove 421, so that the first connecting rod 430 drives the right end of the second lifting plate 420 to move downward toward the first lifting plate 410, realizing the vertical downward displacement of the second lifting plate 420 and the downward movement of the central axis 300. The downward movement of the central axis 300 causes the second cleaning bucket 500 to fit the first cleaning bucket 600 downward, and at the same time, the downward movement of the central axis 300 presses the fan-shaped plate 810 to close the bottom of the first cleaning bucket 600.

[0055] When the central shaft 300 moves downward, the plurality of fan-shaped plates 810 are pressed, and the plurality of fan-shaped plates 810 are all in a horizontal arrangement under the tensile action of the tension spring 830 and the multi-link 820, so that the bottom of the first cleaning bucket 600 is in a closed state, and when cleaning the plastic fragments, the plastic fragments are prevented from being discharged from the bottom of the first cleaning bucket 600 into the barrel body 100 under the disturbance of the cleaning liquid, and the plastic fragments are prevented from being discharged from the outlet and mixed with heavy impurities and the cleaning liquid, and the purpose of recycling is not achieved.

[0056] After the downward movement is completed, the second motor 470 is driven, and the second motor 470 drives the active bevel gear 460 to mesh with the driven bevel gear 450 for transmission, and the driven bevel gear 450 drives the central shaft 300 to rotate, so that the second cleaning bucket 500 rotates, and drives the plastic fragments in the kneading cavity to be squeezed and rubbed by the first cleaning kneading member 610 and the second cleaning kneading member 510, so as to remove the stubborn impurities adhering to the surface of the plastic fragments, thereby achieving the purpose of cleaning the plastic fragments;

[0057] At the same time, when rubbing and cleaning the plastic fragments, light impurities pass through the filtering holes 520 provided on the second cleaning bucket 500 and rise to the top of the second cleaning bucket 500 under the buoyancy of water, and float on the surface of the cleaning liquid. The filter hole plug bucket 700 is sleeved on the central axis 300 above the second cleaning bucket 500. When the second cleaning bucket 500 moves down and rotates to rub the plastic fragments, the centrifugal force generated by the rotation of the cleaning liquid and the plastic fragments makes the filter hole plug bucket 700 rotate freely above the second cleaning bucket 500. After floating above the second cleaning bucket 500, the light impurities float to the water surface through the strip grooves 710. When the rotation stops, the rotation of the water gradually stops, and the filter hole plug bucket 700 rotates downward step by step with the rotation of the water. Finally, through the rotation force of the water, the arc-shaped protrusion 720 of the filter hole plug bucket 700 cooperates with the arc-shaped groove 540 of the second cleaning bucket 500, and the filter hole plug bucket 700 fits on the second cleaning bucket 500. The strip grooves 710 and the filter holes 520 are staggered and placed, and the filter holes 520 are closed by the filter hole plug bucket 700.

[0058] After cleaning is completed, the second motor 470 is stopped, and the first motor 414 is driven to rotate in the opposite direction, and the central axis 300 moves upward. When the second cleaning bucket 500 is pulled upward, the light impurities remain in the second cleaning bucket 500; at the same time, the opening and closing assembly 800 at the bottom is opened, and the heavy impurities are discharged from the bottom of the first cleaning bucket 600 to the bottom of the barrel 100, thereby achieving the separation of heavy impurities and plastic fragments.

[0059] Although the present invention has been disclosed as above by embodiments, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A cleaning and impurity removal device for plastic recycling, comprising a barrel (100), characterized in that: The upper end of the side wall of the barrel body (100) is provided with an inlet (110), and the lower end of the side wall of the barrel body (100) is also provided with an outlet (120); the barrel body (100) is covered with a cover body (200); a central axis (300) is inserted into the cover body (200); a lifting and rotating assembly (400) is connected to the central axis (300) located above the cover body (200); the lifting and rotating assembly (400) is fixed to the cover body (200); a second cleaning bucket (500) is fixed to the central axis (300) located below the cover body (200); the outer periphery of the second cleaning bucket (500) is arranged to fit the inner wall of the barrel body (100); The first cleaning bucket (600) is installed at the lower inner part of the barrel body (100) in contact with the inner wall of the barrel body (100); the second cleaning bucket (500) is located above the first cleaning bucket (600); after the second cleaning bucket (500) moves down to contact with the first cleaning bucket (600), a rubbing cavity is formed between the two; a filter hole plug bucket (700) is also provided above the second cleaning bucket (500), and the filter hole plug bucket (700) is movably sleeved on the central axis (300); an opening and closing assembly (800) is provided at the bottom of the first cleaning bucket (600), and the bottom of the first cleaning bucket (600) is opened and closed by the opening and closing assembly (800).

2. A cleaning and impurity removal device for plastic recycling according to claim 1, characterized in that: A plurality of first cleaning and kneading elements (610) are evenly distributed on the inner wall of the first cleaning bucket (600); a plurality of second cleaning and kneading elements (510) are provided on the outer wall of the second cleaning bucket (500); a plurality of filtering holes (520) are also provided on the side wall of the second cleaning bucket (500); the second cleaning and kneading elements (510) and the filtering holes (520) are alternately arranged on the side wall of the second cleaning bucket (500); and a plurality of small water filtering holes (530) are also provided on the side bottom of the second cleaning bucket (500).

3. A cleaning and impurity removal device for plastic recycling according to claim 1, characterized in that: The lifting and rotating assembly (400) comprises a first lifting plate (410) mounted on the cover body (200), a second lifting plate (420) is further arranged above the first lifting plate (410), a first limit block (411) and a second limit block (412) are fixed on the right side of the first lifting plate (410), a screw rod (413) is horizontally penetrated and rotatably connected to the first limit block (411) and the second limit block (412), a push rod (415) is screwed to the screw rod (413) located between the first limit block (411) and the second limit block (412), an output shaft of a first motor (414) is fixedly connected to the end of the screw rod (413) located on the right side of the second limit block (412), and the first motor (414) is fixed on the first lifting plate (410); the second lifting plate (420) Slide grooves (421) are provided on both sides of the right end of the lower table, and first connecting rods (430) are hinged on both sides of the left end of the upper surface of the first lifting plate (410), and the other end of the first connecting rod (430) is slidably hinged in the slide groove (421); second connecting rods (440) are hinged on both sides of the left end of the lower surface of the second lifting plate (420), and the other ends of the two second connecting rods (440) are hinged at both ends of the push rod (415), and the middle parts of the first connecting rod (430) and the second connecting rod (440) are rotatably connected through a pin shaft (480); the central axis (300) located above the cover body (200) passes through the first lifting plate (410) to the top of the second lifting plate (420), and limit rings (310) are fixed on the central axis (300) located on the upper surface of the second lifting plate (420) and on both sides of the lower table.

4. A cleaning and impurity removal device for plastic recycling according to claim 3, characterized in that: A driven bevel gear (450) is fixed on the central shaft (300), and the driven bevel gear (450) is located above the second lifting plate (420). A second motor (470) is also fixed on the second lifting plate (420), and a driving bevel gear (460) is fixed on the output shaft of the second motor (470), and the driven bevel gear (450) and the driving bevel gear (460) are meshed and driven.

5. The cleaning and impurity removal device for plastic recycling according to claim 1, characterized in that: The opening and closing assembly (800) comprises a plurality of fan-shaped plates (810) arranged at the bottom of the first cleaning bucket (600), the central angles of the plurality of fan-shaped plates (810) are all arranged toward the center of the first cleaning bucket (600), after the second cleaning bucket (500) moves down to fit the first cleaning bucket (600), the bottom of the central axis (300) is pressed with the plurality of fan-shaped plates (810) to be arranged horizontally, and the plurality of fan-shaped plates (810) form a circle when arranged horizontally and fit the bottom of the first cleaning bucket (600); a multi-link (820) is hinged between each of the fan-shaped plates (810) and the inner wall of the first cleaning bucket (600), and a tension spring (830) is also connected between each of the fan-shaped plates (810) and the inner wall of the first cleaning bucket (600), and one end of the multi-link (820) and the tension spring (830) connected to the inner wall of the first cleaning bucket (600) is located in the rubbing cavity.

6. A cleaning and impurity removal device for plastic recycling according to claim 2, characterized in that: The filter hole plug bucket (700) is provided with a plurality of strip grooves (710), and the top outer edge of the filter hole plug bucket (700) is also provided with a plurality of arc-shaped protrusions (720). The top inner wall of the second cleaning bucket (500) is evenly provided with a plurality of arc-shaped grooves (540), and the arc-shaped protrusions (720) and the arc-shaped grooves (540) are adapted to each other. After the arc-shaped protrusions (720) and the arc-shaped grooves (540) are adapted to each other, the strip grooves (710) and the filter holes (520) are arranged in a staggered manner, and the inner wall of the second cleaning bucket (500) and the outer wall of the filter hole plug bucket (700) are in contact with each other.

7. A cleaning and impurity removal device for plastic recycling according to claim 2, characterized in that: The inlet (110) is located above the first cleaning bucket (600).

8. The cleaning and impurity removal device for plastic recycling according to claim 5, characterized in that: The multi-link rod (820) includes a first linkage rod (821) and a second linkage rod (822), one end of the first linkage rod (821) is rotatably connected to the inner wall of the first cleaning bucket (600), the other end of the first linkage rod (821) is rotatably connected to the second linkage rod (822), and one end of the second linkage rod (822) away from the first linkage rod (821) is rotatably connected to the fan-shaped plate (810).

9. A cleaning and impurity removal device for plastic recycling according to claim 2, characterized in that: The diameter of the filtering hole (520) is larger than the diameter of the small water filtering hole (530).

10. The cleaning and impurity removal device for plastic recycling according to claim 1, characterized in that: The barrel body (100) and the first cleaning bucket (600) are clamped and fixed.

Images