A post-rinse water-in plastic helical lift device

Abstract

The present application relates to the technical field of plastic lifting in water, in particular to a spiral lifting device for plastic in water after rinsing. The device comprises a filtering assembly, which filters water in plastic pieces and continues to lift the plastic pieces upward after the plastic pieces enter the filtering assembly. An upper side of the filtering assembly is provided with a pumping assembly, which continues to transport the plastic pieces after the plastic pieces are lifted to the upper side of the filtering assembly. The plastic pieces are lifted to the inside of the filter plate by the first spiral blade, and the second spiral blade continues to lift the plastic pieces mixed with water in the filter plate upward when rotating. The water in the plastic pieces gradually flows out through the filter plate under the action of gravity in the process of lifting the plastic pieces, preventing the device from having low efficiency in transporting the plastic pieces due to too much water mixed in the plastic pieces.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic lifting in water, in particular to a spiral lifting device for plastic in water after rinsing. BACKGROUND

[0002] Plastic recycling is a complex system engineering, which aims to convert waste plastics into reusable raw materials. After waste plastics are recycled, they need to go through a series of processing procedures such as sorting, crushing, cleaning, drying, etc. After the plastic is crushed and cleaned, the spiral lifting device is used to transport the cleaned plastic pieces from the cleaning pool to the subsequent processing mechanism.

[0003] When transporting the plastic pieces in the cleaning pool to the dehydration device, the spiral lifting device is usually used. Since the plastic pieces are light in weight, the plastic pieces in the cleaning pool are usually floating on the water surface and are relatively dispersed. When the spiral lifting device lifts the plastic pieces in the cleaning pool, it is inevitable that the water in the cleaning pool will be lifted together with the plastic pieces. Moreover, since the plastic pieces in the cleaning pool are relatively dispersed, the proportion of water is higher than that of plastic pieces when the lifting device lifts the plastic pieces. When there is a lot of water mixed in the plastic pieces, the water will flow downward with the plastic pieces when the gravity is downward, which results in low lifting efficiency of the device. The existing lifting device usually uses the method of squeezing water out to squeeze out the water, but the shape of the plastic pieces is irregular, and there are recesses, holes, etc. on the surface of the plastic pieces, so the water is wrapped in these holes, which makes it difficult for the plastic pieces to be squeezed out. Since the plastic pieces are light in weight and the surface of the plastic pieces is wet when transporting the plastic pieces, the plastic pieces are easy to stick to the lifting device during lifting, which makes it difficult to be transported to the subsequent processing device. In view of this, the present application provides a spiral lifting device for plastic in water after rinsing. SUMMARY

[0004] The present application aims to provide a spiral lifting device for plastic in water after rinsing to solve the problems in the background art.

[0005] 1. The water in the plastic pieces is not easy to be discharged, and the water is transported together with the plastic pieces, which results in low conveying efficiency of the device.

[0006] 2. Some plastic pieces will stick to the lifting device due to the water on the surface, which makes it difficult to be transported to the subsequent processing device.

[0007] To solve the above problems, a post-rinse water plastic spiral lifting device is provided, which comprises a shell, a feeding barrel fixedly arranged inside the shell, a lifting assembly arranged inside the feeding barrel, the lifting assembly comprising a first spiral blade rotating in the lower region of the inner cavity of the feeding barrel, the first spiral blade being used for conveying the crushed plastic fragments, the upper side of the first spiral blade being provided with a filtering assembly, the filtering assembly comprising:

[0008] A filter plate, which is a hollow structure with filter holes, a notch being arranged between the bottom of the filter plate and the top discharge port of the first spiral blade;

[0009] A second spiral blade, which is adapted to rotate in the hollow structure, and the second spiral blade and the first spiral blade rotate at different speeds on the same axis, so that the second spiral blade and the first spiral blade form a lifting and drainage line.

[0010] When the water mixed in the plastic fragments flows downward under the action of gravity, the water in the plastic fragments is carried downward, and the filtering assembly increases the conveying efficiency of the device for the plastic fragments after filtering the water in the plastic fragments.

[0011] As a further improvement of the technical solution, the filtering assembly comprises a filter plate, which is fixedly arranged inside the feeding barrel, and the filter plate is in the shape of a circular truncated cone with the cross-sectional dimension gradually decreasing from bottom to top;

[0012] The blade density of the second spiral blade is greater than that of the first spiral blade.

[0013] The gap between the second spiral blade and the filter plate gradually decreases from bottom to top, and when the second spiral blade gradually conveys the plastic fragments upward, the pressure exerted by the second spiral blade on the plastic fragments gradually increases to accelerate the outflow speed of the water in the plastic fragments and prevent the plastic fragments from being conveyed to the top of the filter plate while still containing a large amount of water.

[0014] As a further improvement of the technical solution, a scraper is fixedly arranged on the second spiral blade, one side of the scraper is attached to the inner wall of the filter plate, and the side of the scraper close to the inner wall of the filter plate is made of rubber;

[0015] A backing plate is fixedly arranged on the lower side of the filter plate, and a notch for the plastic fragments to pass through is arranged in the middle of the backing plate.

[0016] When the water is discharged through the filter plate, part of the plastic fragments will move close to the inner wall of the filter plate, and when the plastic fragments are adsorbed on the inner wall of the filter plate, the filter plate will be blocked, making it difficult for the water inside the filter plate to flow out. The scraper not only accelerates the outflow speed of the water inside the filter plate, but also prevents the plastic fragments adsorbed on the inner wall of the filter plate from being lifted further.

[0017] As a further improvement of the technical solution, the speed regulating assembly is arranged between the first spiral blade and the second spiral blade, the speed regulating assembly is used for adjusting the rotating speed of the first spiral blade, the speed regulating assembly comprises a shell, the shell is arranged between the rotating shafts of the first spiral blade and the second spiral blade, the rotating shafts of the first spiral blade and the second spiral blade are rotatably arranged in the interior of the shell, and the shell is fixedly connected with the backing plate.

[0018] When the first spiral blade and the second spiral blade rotate, the shell supports one end of the rotating shafts of the first spiral blade and the second spiral blade, and the rotating speed of the first spiral blade and the second spiral blade is adjusted through the parts in the interior of the shell, so that the water mixed in the plastic fragments is quickly filtered while the plastic fragments are lifted.

[0019] As a further improvement of the technical solution, the pumping assembly comprises a conveying bin, the conveying bin is fixedly arranged on one side of the shell, one end of the conveying bin is fixedly arranged in the interior of the filter plate, an air extractor is arranged on the upper side of the conveying bin, the air extractor is fixedly arranged on the upper side of the shell, a pipeline is fixedly arranged between the air extractor and the conveying bin, one end of the pipeline is fixedly arranged in the interior of the conveying bin, an air inlet nozzle is fixedly arranged at the end of the pipeline in the interior of the conveying bin, the end of the air inlet nozzle close to the second spiral blade is flat, and the air extractor is used for extracting the air in the interior of the feeding cylinder through the air inlet nozzle and the pipeline.

[0020] When the air passes through the air inlet nozzle, the air is compressed and quickly flows into the interior of the air inlet nozzle, and the plastic fragments in the interior of the filter plate are pumped into the interior of the conveying bin along with the air, in order to prevent the plastic fragments from being pumped into the interior of the air inlet nozzle, a screen is fixedly arranged at the air inlet end of the air inlet nozzle, and the plastic fragments cannot enter the interior of the air inlet nozzle under the shielding of the screen.

[0021] Compared with the prior art, the present application has the following advantages:

[0022] 1. In the plastic lifting equipment in the rinsing water, the plastic fragments are lifted into the interior of the filter plate under the continuous rotation of the first spiral blade, the plastic fragments mixed with water in the interior of the filter plate are continuously lifted upwards by the second spiral blade when the second spiral blade rotates, the water in the plastic fragments gradually flows out of the filter plate under the action of gravity in the process of lifting the plastic fragments, the device prevents the low efficiency of conveying the plastic fragments caused by the large amount of water mixed in the plastic fragments, the plastic fragments adhered to the inner wall of the filter plate are scraped off by the scraper driven by the second spiral blade, the filter plate is prevented from being blocked by the plastic fragments, the water in the plastic fragments is difficult to flow out of the filter plate, and the working efficiency of the device is improved.

[0023] 2. In this plastic spiral lifting device in the rinse water, after the plastic fragments are conveyed to the top of the filter plate, the air pump is started and the air in the conveying chamber is extracted through the air inlet and pipe. At the same time, the plastic fragments on the top of the filter plate are sucked into the interior of the conveying chamber and continue to be conveyed through the conveying chamber. This prevents some plastic fragments from sticking to the second spiral blade and being difficult to convey to the interior of the conveying chamber, thus improving the stability of the device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a plan view of the overall structure of the present invention.

[0026] Figure 3 This is a cross-sectional view of the shell structure of the present invention;

[0027] Figure 4 This is a cross-sectional view of the feeding cylinder structure of the present invention;

[0028] Figure 5 This is a cross-sectional view of the filter plate structure of the present invention;

[0029] Figure 6 This is a bottom view of the filter component structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the internal structure of the outer shell of the present invention;

[0031] Figure 8 This is a schematic diagram of the speed control component of the present invention;

[0032] Figure 9 This is a cross-sectional view of the conveying chamber structure of the present invention.

[0033] The meanings of the labels in the diagram are as follows:

[0034] 1. Shell; 2. Feeding cylinder; 3. Lifting assembly; 31. First spiral blade; 32. Filter assembly; 321. Filter plate; 322. Second spiral blade; 323. Scraper; 324. Pad plate;

[0035] 33. Speed ​​regulating component; 331. Housing; 332. Gear ring; 333. Planetary gear; 334. Sun gear; 335. Connecting rod; 336. Connecting block; 34. Drain pipe; 35. Drain groove;

[0036] 4. Extraction assembly; 41. Conveying chamber; 42. Air extractor; 43. Pipeline; 44. Air inlet;

[0037] 5. Drive motor; 6. Synchronous belt; 7. Feed plate; 8. Washing tank; 9. Dewatering machine. Detailed Implementation

[0038] 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 of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0040] Please refer to Figures 1-2 The present embodiment aims to provide a post-rinsing plastic spiral lifting device in water, which comprises a shell 1, a cleaning pool 8 is arranged on one side of the shell 1, the shell 1 is fixedly arranged on the upper side of one end of the cleaning pool 8, the cleaning pool 8 is used for rinsing plastic fragments, a plurality of conveying devices for conveying plastic fragments are arranged in the cleaning pool 8, the plastic fragments are conveyed to the lower side of the shell 1 after being cleaned in the cleaning pool 8, and the cleaning pool 8 is prior art, and its functions and effects will not be described in the present solution.

[0041] Please refer to Figure 1 and Figure 3 As shown in the figure, a feeding cylinder 2 is fixedly arranged in the shell 1, one end of the feeding cylinder 2 is arranged on the lower side of the shell 1, a feeding plate 7 is fixedly arranged on the lower side of the feeding cylinder 2, the feeding plate 7 is arranged on the lower side of the shell 1, and the plastic fragments are conveyed to the inside of the feeding cylinder 2 through the feeding plate 7 after being conveyed to the lower side of the shell 1.

[0042] Please refer to Figures 3-5As shown, the inside of the feeding barrel 2 is provided with a lifting assembly 3, which lifts and filters the plastic chips after entering the inside of the feeding barrel 2. The lifting assembly 3 includes a first spiral blade 31, which is rotationally arranged in the inside of the feeding barrel 2. The plastic chips enter the inside of the feeding barrel 2 through the feeding plate 7 and gradually flow into the gap between the blades of the first spiral blade 31 along with the water flowing into the inside of the feeding barrel 2. The upper side of the first spiral blade 31 is provided with a filtering assembly 32. The first spiral blade 31 transports the plastic chips at the bottom of the feeding barrel 2 to the inside of the filtering assembly 32 when rotating. In order to prevent the excessive water mixed in the plastic chips from reducing the conveying efficiency of the device, a second spiral blade 322 and the first spiral blade 31 form a lifting and draining line, so that the water in the plastic chips is filtered out by the filtering assembly 32 after the plastic chips enter the inside of the filtering assembly 32, and the plastic chips are continuously lifted upwards.

[0043] Please refer to Figures 4-6 As shown, the filtering assembly 32 includes a filter plate 321, which is a hollow structure with filter holes. A notch is arranged between the bottom of the filter plate 321 and the discharge port at the top of the first spiral blade 31. The filter plate 321 is fixedly arranged in the inside of the feeding barrel 2. In order to facilitate the discharge of water in the inside of the filter plate 321 and prevent the plastic chips from flowing out through the filter plate 321, the filter plate 321 is in the shape of a circular truncated cone with the cross-sectional size gradually decreasing from bottom to top. The diameter of the filter holes of the filter plate 321 is smaller than the minimum diameter of the plastic chips. The lower side of the filter plate 321 is fixedly provided with a backing plate 324, which is provided with a notch in the middle for the plastic chips to pass through. The plastic chips lifted by the first spiral blade 31 to the lower side of the filter plate 321 enter the inside of the filter plate 321 through the notch in the middle of the backing plate 324.

[0044] Please refer to Figures 4-6As shown, the inside of the filter plate 321 is rotatably provided with a second spiral blade 322, the second spiral blade 322 is adapted to rotate in the hollow structure, and the second spiral blade 322 and the first spiral blade 31 rotate at different speeds on the same axis, so that the second spiral blade 322 and the first spiral blade 31 form an uplift drainage line. One side of the shell 1 is fixedly provided with a driving motor 5, and the driving motor 5 is rotatably connected with the second spiral blade 322 through a synchronous belt 6. When using the device, the user first starts the driving motor 5, which drives the synchronous belt 6 to rotate, and the synchronous belt 6 drives the second spiral blade 322 to rotate. The gap between the second spiral blade 322 and the filter plate 321 gradually decreases from bottom to top. When the second spiral blade 322 gradually transports the plastic fragments upward, the filter plate 321 is transported from bottom to top, that is, the plastic fragments are transported from the thick end to the thin end of the filter plate 321. The plastic fragments are continuously compressed from the thick end to the thin end, and the extrusion force between the particles in the plastic fragments becomes larger and larger. At the same time, the water attached to the plastic fragments is squeezed out because the contact between the plastic fragments and the filter plate 321 is more and more close, so as to speed up the drainage speed of the water on the plastic fragments and prevent the plastic fragments from being transported to the top of the filter plate 321 while still containing a lot of water.

[0045] Please refer to Figures 5-6 As shown, the rotation shafts of the second spiral blade 322 and the first spiral blade 31 are located on the same axis. In order to speed up the conveying speed of the plastic fragments and quickly drain the water mixed in the plastic fragments, the blade density of the second spiral blade 322 is greater than that of the first spiral blade 31. When the second spiral blade 322 rotates, it continues to lift the plastic fragments upward, and the water mixed in the plastic fragments is drained through the filter holes in the side wall of the filter plate 321. In order to prevent part of the plastic fragments from being adsorbed on the inner wall of the filter plate 321 when the water in the plastic fragments is drained, a scraper 323 is fixedly arranged on the second spiral blade 322. One side of the scraper 323 is in close contact with the inner wall of the filter plate 321. In order to avoid damage to the scraper 323 and the filter plate 321 caused by long-term friction of the scraper 323 on the inner wall of the filter plate 321, the side of the scraper 323 close to the inner wall of the filter plate 321 is made of rubber. When the second spiral blade 322 rotates, it drives the scraper 323 to rotate and scrape off the plastic fragments attached to the inner wall of the filter plate 321. The plastic fragments scraped off fall onto the second spiral blade 322 and are lifted by the second spiral blade 322.

[0046] Please refer to Figures 3-5As shown, after the plastic fragments enter the inside of the filter plate 321, the water mixed in the plastic fragments is discharged through the filter holes of the side wall of the filter plate 321 and then flows between the filter plate 321 and the inner wall of the feeding barrel 2. In order to quickly discharge the water flowing out of the filter plate 321 from the inside of the feeding barrel 2 and prevent it from flowing back to the inside of the filter plate 321, the outside of the filter plate 321 is symmetrically provided with a drain pipe 34 fixedly connected with the side wall of the feeding barrel 2. One end of the drain pipe 34 is arranged in the inside of the feeding barrel 2 and located at the bottom of the filter plate 321. The water flowing out of the inside of the filter plate 321 flows into the inside of the drain pipe 34. The lower side of the drain pipe 34 is provided with a drain groove 35 fixedly arranged at the lower side of the shell 1. The ends of the two drain pipes 34 away from the filter plate 321 are fixedly arranged in the inside of the drain groove 35. The water in the inside of the filter plate 321 is discharged outward through the drain pipe 34 and the drain groove 35 after flowing out. The water in the inside of the filter plate 321 no longer affects the lifting of the plastic fragments by the second spiral blade 322 after flowing out, thereby improving the conveying efficiency of the device.

[0047] As shown in Figures 6-7 As shown, in order to quickly and efficiently discharge the water mixed in the plastic fragments and improve the conveying efficiency of the device, a speed regulating assembly 33 is arranged between the first spiral blade 31 and the second spiral blade 322. The speed regulating assembly 33 is used to adjust the rotating speed of the first spiral blade 31 so that the rotating speed of the first spiral blade 31 is slower than that of the second spiral blade 322. The first spiral blade 31 conveys the plastic fragments into the inside of the filter plate 321 when rotating. Then the second spiral blade 322 quickly conveys the plastic fragments mixed with water upward. While conveying the plastic fragments, the second spiral blade 322 quickly throws the water mixed in the plastic fragments toward the inner wall of the filter plate 321 and discharges it through the filter plate 321.

[0048] As shown in Figures 6-8 As shown, the speed regulating assembly 33 comprises an outer shell 331 arranged between the rotating shafts of the first spiral blade 31 and the second spiral blade 322. The rotating shafts of the first spiral blade 31 and the second spiral blade 322 are rotatably arranged in the inside of the outer shell 331. The outer shell 331 is fixedly connected with the backing plate 324. A gear ring 332 is fixedly arranged in the inside of the outer shell 331. The rotating shaft of the first spiral blade 31 is rotatably arranged at the lower side of the gear ring 332. A plurality of planetary gears 333 are meshingly connected with the inner side of the gear ring 332. The planetary gears 333 rotate around the inner wall of the gear ring 332 when rotating. The upper side of each planetary gear 333 is rotatably connected with a connecting rod 335. A plurality of connecting rods 335 are fixedly connected with a connecting block 336 arranged in the middle. The connecting block 336 is fixedly connected with the rotating shaft of the second spiral blade 322. The second spiral blade 322 drives the connecting block 336 to rotate when rotating. At the same time, the connecting block 336 drives a plurality of connecting rods 335 and planetary gears 333 to rotate.

[0049] As shown in Figures 6-8The middle of the plurality of planetary gears 333 is provided with a sun gear 334, which is in meshing connection with the plurality of planetary gears 333. The planetary gears 333 drive the sun gear 334 to rotate when rotating around the inner wall of the gear ring 332. The number of teeth of the sun gear 334 is twice that of the planetary gears 333. When the planetary gears 333 rotate twice around the sun gear 334, the sun gear 334 rotates one circle, so that the rotation speed of the sun gear 334 is slower than that of the planetary gears 333 and the connecting block 336. The connecting block 336 is on the same axis as the sun gear 334. The sun gear 334 is fixedly arranged on the upper side of the rotating shaft of the first spiral blade 31. The sun gear 334 drives the first spiral blade 31 to rotate when rotating. The second spiral blade 322 drives the first spiral blade 31 to rotate while rotating, and the rotation speed of the second spiral blade 322 is faster than that of the first spiral blade 31.

[0050] As shown in Figure 3 and Figure 9 The upper side of the filter assembly 32 is provided with a pumping assembly 4. The plastic fragments are lifted to the upper side of the filter assembly 32 and then continuously transported by the pumping assembly 4. The pumping assembly 4 includes a conveying bin 41 fixedly arranged on one side of the shell 1. One end of the conveying bin 41 is fixedly arranged in the interior of the filter plate 321. The second spiral blade 322 lifts the plastic fragments to the upper side of the filter plate 321, which gradually enters the interior of the conveying bin 41 and is discharged through the conveying bin 41.

[0051] As shown in Figure 4 and Figure 9 In order to prevent some plastic from sticking to the second spiral blade 322 and not entering the interior of the conveying bin 41, the upper side of the conveying bin 41 is provided with an air extractor 42 fixedly arranged on the upper side of the shell 1. The air extractor 42 is prior art, and its functions and effects will not be described in this scheme. A pipe 43 is fixedly arranged between the air extractor 42 and the conveying bin 41. One end of the pipe 43 is fixedly arranged in the interior of the conveying bin 41. The end of the pipe 43 in the interior of the conveying bin 41 is fixedly provided with an air inlet nozzle 44. When the air extractor 42 is started, the air in the interior of the conveying bin 41 is extracted through the air inlet nozzle 44 and the pipe 43, and the plastic fragments in the interior of the filter plate 321 are pumped into the interior of the conveying bin 41.

[0052] As shown in Figures 2-9As shown, in order to quickly extract the air inside the conveying bin 41 and quickly pump the plastic fragments inside the filter plate 321 to the inside of the conveying bin 41, the air inlet nozzle 44 is flat near one end of the second spiral blade 322, the air is compressed and quickly flows into the air inlet nozzle 44 when passing through the air inlet nozzle 44, and the plastic fragments inside the filter plate 321 are pumped into the inside of the conveying bin 41 with the air, in order to prevent the plastic fragments from being pumped into the air inlet nozzle 44, the air inlet end of the air inlet nozzle 44 is fixedly installed with a screen, the plastic fragments cannot enter the inside of the air inlet nozzle 44 when passing through the air inlet end of the air inlet nozzle 44 under the shielding of the screen, the dehydration machine 9 is arranged on the side of the shell 1 away from the cleaning pool 8, the outlet end of the conveying bin 41 is arranged on the upper side of the feeding port of the dehydration machine 9, the dehydration machine 9 is prior art, and its functions and effects will not be described in the scheme, the plastic fragments fall into the inside of the dehydration machine 9 for dehydration after passing through the conveying bin 41, in order to prevent some plastic fragments from being retained in the inside of the conveying bin 41, the bottom of the conveying bin 41 is designed to be downwardly inclined, the plastic fragments gradually slide and fall into the inside of the dehydration machine 9 after entering the inside of the conveying bin 41.

[0053] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above-mentioned embodiments, the above-mentioned embodiments and descriptions in the specification are only preferred examples of the present application and are not used to limit the present application, various changes and improvements of the present application can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A post-rinse water plastic spiral lifting device, comprising a shell (1), a feeding barrel (2) fixedly arranged inside the shell (1), and a lifting assembly (3) arranged inside the feeding barrel (2), wherein the lifting assembly (3) comprises a first spiral blade (31) rotating at a lower region of an inner cavity of the feeding barrel (2), and the first spiral blade (31) is used for conveying crushed plastic fragments, and an upper side of the first spiral blade (31) is provided with a filtering assembly (32), and the filtering assembly (32) comprises: a filter plate (321) in a hollow structure with filter holes, and a notch is arranged between a bottom of the filter plate (321) and a discharge port of a top of the first spiral blade (31); and a second spiral blade (322) adapted to rotate in the hollow structure, and the second spiral blade (322) and the first spiral blade (31) rotate at different speeds on the same axis, so that the second spiral blade (322) and the first spiral blade (31) form a lifting and draining line; the filtering assembly (32) comprises the filter plate (321) fixedly arranged inside the feeding barrel (2), and the filter plate (321) is in a circular table shape with a cross-sectional dimension gradually decreasing from bottom to top; a blade density of the second spiral blade (322) is greater than that of the first spiral blade (31); a scraper (323) is fixedly arranged on the second spiral blade (322), one side of the scraper (323) is attached to an inner wall of the filter plate (321), and the side of the scraper (323) close to the inner wall of the filter plate (321) is made of rubber; a backing plate (324) is fixedly arranged on a lower side of the filter plate (321), and a notch for the plastic fragments to pass through is arranged in the middle of the backing plate (324); characterized in that a speed adjusting assembly (33) is arranged between the first spiral blade (31) and the second spiral blade (322), the speed adjusting assembly (33) is used for adjusting a rotating speed of the first spiral blade (31), the speed adjusting assembly (33) comprises an outer shell (331) arranged between rotating shafts of the first spiral blade (31) and the second spiral blade (322), the rotating shafts of the first spiral blade (31) and the second spiral blade (322) are both rotatingly arranged inside the outer shell (331), and the outer shell (331) is fixedly connected with the backing plate (324). A gear ring (332) is fixedly arranged inside the outer shell (331), the rotating shaft of the first spiral blade (31) is rotatingly arranged at a lower side of the gear ring (332), a plurality of planetary gears (333) are meshingly connected to an inner side of the gear ring (332), a sun gear (334) is arranged in the middle of the planetary gears (333), and the sun gear (334) is fixedly arranged at an upper side of the rotating shaft of the first spiral blade (31). ​ ​ ​ ​ ​ ​ 2. The post-rinse in-water plastic screw-lifting apparatus of claim 1, wherein: ​ 3. The post-rinse in-water plastic screw-lifting apparatus of claim 2, wherein: The sun gear (334) is connected with a plurality of planetary gears (333), the upper side of the planetary gear (333) is rotatably connected with a connecting rod (335), the middle of a plurality of connecting rods (335) is fixedly connected with a connecting block (336), the connecting block (336) is located on the same axis as the sun gear (334), the connecting block (336) is fixedly connected with the rotating shaft of the second spiral blade (322), and the connecting block (336) is used to drive the second spiral blade (322) to rotate.

4. The post-rinse in-water plastic spiral lift apparatus of claim 1, wherein: The outer side of the filter plate (321) is symmetrically provided with a drain pipe (34), the drain pipe (34) is fixedly connected with the side wall of the feeding cylinder (2), one end of the drain pipe (34) is arranged in the inside of the feeding cylinder (2) and located at the bottom of the filter plate (321), the lower side of the drain pipe (34) is provided with a drain groove (35), the drain groove (35) is fixedly arranged on the lower side of the shell (1), and the two drain pipes (34) are fixedly arranged in the inside of the drain groove (35) away from the filter plate (321).

5. The post-rinse in-water plastic spiral lift apparatus of claim 1, wherein: The upper side of the feeding cylinder (2) is provided with a pumping assembly (4), the pumping assembly (4) comprises a conveying bin (41), the conveying bin (41) is fixedly arranged on one side of the shell (1), one end of the conveying bin (41) is fixedly arranged in the inside of the filter plate (321), the upper side of the conveying bin (41) is provided with an air extractor (42), the air extractor (42) is fixedly arranged on the upper side of the shell (1), a pipeline (43) is fixedly arranged between the air extractor (42) and the conveying bin (41), one end of the pipeline (43) is fixedly arranged in the inside of the conveying bin (41), one end of the pipeline (43) in the inside of the conveying bin (41) is fixedly provided with an air inlet nozzle (44), the end of the air inlet nozzle (44) close to the second spiral blade (322) is flat, and the air extractor (42) is used to extract the air in the inside of the feeding cylinder (2) through the air inlet nozzle (44) and the pipeline (43).

6. The post-rinse in-water plastic screw-lifting apparatus of claim 1, wherein: One side of the shell (1) is fixedly provided with a driving motor (5), a synchronous belt (6) is engagedly connected between the rotating shaft of the driving motor (5) and the rotating shaft of the second spiral blade (322), the driving motor (5) is used to drive the synchronous belt (6) to rotate, the synchronous belt (6) drives the second spiral blade (322) to rotate, and the lower side of the feeding cylinder (2) is fixedly provided with a feeding plate (7).

7. The post-rinse in-water plastic screw-lifting apparatus of claim 5, wherein: One side of the shell (1) is provided with a cleaning pool (8), the shell (1) is fixedly arranged on the upper side of one end of the cleaning pool (8), the side of the shell (1) away from the cleaning pool (8) is provided with a dewatering machine (9), the outlet end of the conveying bin (41) is arranged on the upper side of the feeding port of the dewatering machine (9), and the dewatering machine (9) is used to dewater the plastic fragments falling from the inside of the shell (1).

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