CN220489644U

CN220489644U - Device for dehydrating and drying waste plastic sheets

Info

Publication number: CN220489644U
Application number: CN202321633716.6U
Authority: CN
Inventors: 肖能齐; 詹雨薇; 肖林江; 范伊; 黄景翔; 刘星雨; 叶子亮; 张云程
Original assignee: China Three Gorges University CTGU
Current assignee: China Three Gorges University CTGU
Priority date: 2023-06-26
Filing date: 2023-06-26
Publication date: 2024-02-13
Anticipated expiration: 2033-06-26

Abstract

The device comprises a spin-drying device, a high-temperature drying device and a supporting frame, wherein the supporting frame is arranged into an upper layer and a lower layer, the spin-drying device is arranged on the upper layer of the supporting frame, the high-temperature drying device is arranged on the lower layer of the supporting frame, the spin-drying device is communicated with the high-temperature drying device and comprises three parts, namely a feeding part, a spin-drying part and an auxiliary supporting part, the spin-drying part is driven by a motor and is driven by a gear, the feeding part is driven by a motor and is driven by a chain wheel, the auxiliary supporting part is divided into an inner supporting part and an outer supporting part, the outer supporting part is matched with a roller and a roller slideway, the inner supporting part is matched with a boss and a concave surface, and two structures of a shaft, a bearing and a bearing seat are matched; the high-temperature drying device comprises a material turning part and a drying part, wherein the material turning part adopts a fan, and the drying part adopts an electric heating device; the device realizes the integration, mechanization and automation of the whole process of dehydrating and drying the waste plastic sheets, improves the recycling rate and quality of the plastic and saves the cost.

Description

Device for dehydrating and drying waste plastic sheets

Technical Field

The utility model relates to a dehydration dryer, in particular to a device for dehydrating and drying waste plastic sheets.

Background

With the development of economy, the recovery and reuse of waste plastics has become an important issue for current environmental protection and sustainable development. The recovery and treatment of the waste plastic sheets are important fields of environmental protection and resource utilization, and have great economic and social significance. However, the recycled waste plastic sheet is intended to be used as a production raw material, and requires thorough washing and dehydration treatment to obtain a reusable high quality plastic raw material. The traditional method mostly adopts a sun-drying method to carry out dehydration, and the special dehydration equipment in the prior art has low efficiency, high production cost and pollution to the surrounding environment. The high-speed dryer device is special equipment for dehydrating the waste plastic sheets, and can completely dehydrate the water in the waste plastic sheets by combining a high-temperature air drying link after spin-drying the water by rotation, so that the quality and the recovery rate of the plastic are improved. This patent aims at providing an efficient waste plastic piece dehydration and drying device to improve waste plastic piece's reuse rate and quality, reduce plastics pollution and waste, reach environmental protection and sustainable development's purpose.

Disclosure of Invention

The utility model aims to solve the technical problems of providing a device for dehydrating and drying waste plastic sheets, which realizes the integration, mechanization and automation of the whole process of dehydrating and drying the waste plastic sheets, improves the recycling rate and quality of the waste plastic sheets, reduces the pollution and waste of the plastic and achieves the aims of environmental protection and sustainable development.

In order to solve the technical problems, the utility model adopts the following technical scheme: the device comprises a spin-drying device, a high-temperature drying device and a supporting frame, wherein the supporting frame is arranged into an upper layer and a lower layer, the spin-drying device is arranged on the upper layer of the supporting frame, the high-temperature drying device is arranged on the lower layer of the supporting frame, the spin-drying device is communicated with the high-temperature drying device and comprises three parts, namely a feeding part, a spin-drying part and an auxiliary supporting part, the spin-drying part is driven by a motor and is driven by a gear, the feeding part is driven by a motor and is driven by a chain wheel, the auxiliary supporting part is divided into an inner supporting part and an outer supporting part, the outer supporting part is matched with a roller and a roller slideway, the inner supporting part is matched with a boss and a groove, and a shaft, a bearing and a bearing seat are matched with two structures; the high-temperature drying device comprises a material turning part and a drying part, wherein the material turning part adopts a fan, and the drying part adopts an electric heating device.

In the preferred scheme, spin-drying device includes the feeder hopper, spin-drying drum, first casing, the supporting seat, first motor and second motor, the feeder hopper is fixed on braced frame, the below communicates with each other with spin-drying drum, spin-drying drum sets up inside first casing, spin-drying drum below is provided with multiunit supporting seat, the supporting seat and first casing spiro union, spin-drying drum includes the staving, the pulley way, helical blade, the mount, dabber and bearing frame, the pulley way rigidity is fixed at the staving external surface, the mount rigidity is fixed at the staving internal surface, helical blade and dabber rigid connection, set up inside the staving, fixed through mount and the bearing frame of installing respectively at dabber both ends, driven sprocket is installed to dabber one end, install the driving sprocket on the second motor, driving sprocket and driven sprocket link, staving one end surface installs the gear wheel, the pinion meshing on first motor, the second motor respectively with the motor seat, braced frame spiro union in proper order, the other end surface spiro union has the switching rolling disc, switching rolling disc and switching disc spiro union, the switching disc is pegged graft on the fixed disc, the switching disc spiro union is provided with the drain hole on first casing.

In the preferred scheme, the circumference of the barrel body is densely provided with water filtering holes.

In the preferred scheme, the fixing frame is of a spoke wheel structure and comprises an inner ring, spokes and an outer ring, wherein two ends of the spokes are rigidly connected between the inner ring and the outer ring, and the inner ring is clamped with a bearing and is integrated with a mandrel.

In the preferred scheme, first casing includes first roof, first front end plate, a set of first curb plate, first bottom plate and first back end plate, trompil on the first front end plate, with the feeder hopper intercommunication, the dabber passes, through gear pair and first motor switch-on, trompil on the first back end plate, the dabber passes, link to each other with the bearing frame of spiro union on first back end plate, install the bearing between bearing frame and the dabber, be close to the inside rigidity of first back end plate between first roof, first bottom plate is fixed with the backup pad, the spiro union switching fixed disk in the backup pad, trompil on the first bottom plate between first back end plate and the backup pad, hole below rigidity is fixed with the switching material way, switching material way intercommunication spin-drying device and high temperature drying device, first bottom plate sets up to the slope structure, the wash port opening side is the low-end.

In the preferred scheme, the supporting seat contains supporting roller and supporting base, and supporting roller and supporting base pass through axle and bearing dress as an organic wholely, adopt axle head baffle and bolt fastening, supporting base and first casing spiro union, be provided with the recess on the pulley way, supporting roller clamps in the recess of pulley way, meets with the pulley way.

In the preferred scheme, the switching rolling disc is provided with round recess, and the switching fixed disk is provided with round boss, and the recess of switching rolling disc is pegged graft with the boss of switching fixed disk.

In the preferred scheme, high temperature drying device includes leading fan, second casing, stoving filter screen, side position fan and electrothermal tube, and leading fan sets up at the second casing feed end and put through with it, and side position fan is installed to second casing both sides, and leading fan and side position fan all are provided with the aviation baffle of upward slope, and stoving filter screen and second casing spiro union, electrothermal tube setting are under the stoving filter screen, fix in second casing bottom.

In the preferred scheme, the second casing includes second roof, second front end board, a set of second curb plate, second bottom plate and second back end plate, trompil on the second front end board, the rigidity is fixed with the discharge gate, trompil slope spiro union stoving filter screen on second front end board and the second back end board, stoving filter screen upper end and second front end board spiro union are located under the switching material way, stoving filter screen lower extreme and second back end board spiro union, with the rigidity fix the discharge gate switch on the second back end board, the side fan spiro union is on the second curb plate of both sides, the leading fan rigidity is fixed on the second back end board, trompil in the middle of the second bottom plate, the stoving filter screen passes hole spiro union on the second bottom plate, second bottom plate width both sides are provided with the rag bolt hole, adopt bolt and ground to fix.

In the preferred scheme, the support frame comprises a frame and supporting feet, the supporting feet are arranged on the frame feet and are connected into a whole, and the frame is lapped into a whole by adopting hollow section steel.

The device for dehydrating and drying the waste plastic sheets has the following beneficial effects:

1. the device has simple and reliable structure, and realizes the integration, mechanization and automation of the whole process of dehydrating and drying the waste plastic sheets.

2. The device is exquisite and practical in design, ensures the use safety of the device, and effectively prolongs the overall service life of the equipment.

3. The procedures of spin-drying, feeding, drying and discharging are tightly and smoothly connected by adopting the device, so that the recycling rate and quality of waste plastic sheets are improved, the plastic pollution and waste are reduced, and the purposes of environmental protection and sustainable development are achieved.

4. The device has the advantages of low cost, environmental protection, safety, wide application range, suitability for garbage recycling stations and processing recycling factories, and high popularization value.

Drawings

The utility model is further described below with reference to the accompanying drawings and examples of implementation:

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the overall structure of the present utility model;

FIG. 3 is a schematic structural view of a spin-drying apparatus;

FIG. 4 is a right side view of the spin-drying apparatus;

FIG. 5 is a left side view of the spin-drying apparatus;

FIG. 6 is a schematic diagram of an assembly of a transfer rotor disk and a transfer stator disk;

fig. 7 is a front view of the high temperature drying apparatus;

FIG. 8 is a schematic view of the structure of a support frame;

in the figure: the spin dryer 1, the high temperature drying apparatus 2, the support frame 3, the feed hopper 101, the spin dryer 102, the first housing 103, the support base 104, the first motor 105, the second motor 106, the large gear 107, the small gear 108, the motor base 109, the switching rotating disc 110, the switching fixed disc 111, the drain pipe 112, the tub 1021, the pulley duct 1022, the spiral blade 1023, the fixing frame 1024, the spindle 1025, the bearing seat 1026, the driven sprocket 1027, the driving sprocket 1028, the first top plate 1031, the first front end plate 1032, the first side plate 1033, the first bottom plate 1034, the first rear end plate 1035, the support plate 1036, the switching duct 1037, the support roller 1041, the support base 1042, the front blower 201, the second housing 202, the drying screen 203, the side blower 204, the electric heating tube 205, the second top plate 2021, the second front end plate 2022, the second side plate 2023, the second bottom plate 2024, the second rear end plate 2025, the discharge port 6, the frame 301, the support legs 302.

Detailed Description

As shown in fig. 1-8, the device for dehydrating and drying waste plastic sheets comprises a drying device 1, a high-temperature drying device 2 and a supporting frame 3, wherein the supporting frame 3 is arranged into an upper layer and a lower layer, the drying device 1 is arranged on the upper layer of the supporting frame 3, the high-temperature drying device 2 is arranged on the lower layer of the supporting frame 3, the drying device 1 is communicated with the high-temperature drying device 2, the drying device 1 comprises three parts, namely a feeding part, a drying part and an auxiliary supporting part, the drying part is driven by a motor and driven by a gear, the feeding part is driven by a motor and driven by a chain wheel, the auxiliary supporting part is divided into an inner supporting part and an outer supporting part, the outer supporting part is matched with a roller and a roller slideway, the inner supporting part is matched with a boss and a groove, and the shaft, the bearing and a bearing seat are matched with two structures; the high-temperature drying device 2 comprises a material turning part and a drying part, wherein the material turning part adopts a fan, and the drying part adopts an electric heating device.

In this embodiment, the spin-drying device 1 includes a feed hopper 101, a spin-drying drum 102, a first housing 103, a supporting seat 104, a first motor 105 and a second motor 106, the feed hopper 101 is fixed on a supporting frame (3), the lower part is communicated with the spin-drying drum 102, the spin-drying drum 102 is arranged inside the first housing 103, a plurality of groups of supporting seats 104 are arranged below the spin-drying drum 102, the supporting seat 104 is in threaded connection with the first housing 103, the spin-drying drum 102 includes a drum 1021, a pulley channel 1022, a spiral blade 1023, a fixing frame 1024, a mandrel 1025 and a bearing seat 1026, the pulley channel 1022 is rigidly fixed on the outer surface of the drum 1021, the fixing frame 1024 is rigidly fixed on the inner surface of the drum 1021, the spiral blade 1023 is rigidly connected with the mandrel 1025, the fixing frame 1024 and the bearing seat 1026 are arranged inside the drum 1021, a driven sprocket 1027 is arranged at one end of the mandrel 1025 through a fixing frame 1024 and a bearing seat 1026 respectively arranged on two ends of the mandrel 1025, a driving sprocket 1028 is arranged on the second motor 106, a large gear 107 is arranged on the outer surface of one end of the drum 1021, the large gear 103 is arranged on the outer surface of the drum 1021, the large gear 105 is arranged on the motor 108, the first motor 105 is arranged on the first motor 105, the first motor 105 is meshed with the first housing 105, the first housing 111 is in a threaded connection with the first housing 111, the other end is connected with the first housing 111, a threaded connection disc 111 is connected to the first housing 111, and the first housing 111 is connected to the first housing 111 in turn, and the rotation joint, and the first housing 111 is connected to the first housing 111, and the rotation connector has and the first housing 111 and the rotation, and the rotation connector is connected to the rotation and the rotation device is provided; the circumference of the barrel 1021 is densely provided with water filtering holes; the fixing frame 1024 is a spoke wheel structure, and comprises an inner ring, spokes and an outer ring, wherein the middle of the inner ring and the outer ring is rigidly connected with two ends of the spokes, the inner ring is clamped with a bearing, and the inner ring and the mandrel 1025 are integrated; the first housing 103 includes a first top plate 1031, a first front end plate 1032, a set of first side plates 1033, a first bottom plate 1034 and a first rear end plate 1035, where the first front end plate 1032 has an opening, and is in communication with the feed hopper 101, the spindle 1025 passes through and is connected with the first motor 105 through a gear pair, the first rear end plate 1035 has an opening, the spindle 1025 passes through and is connected with a bearing seat 1026 screwed on the first rear end plate 1035, a bearing is installed between the bearing seat 1026 and the spindle 1025, a support plate 1036 is rigidly fixed between the first top plate 1031 and the first bottom plate 1034 near the inside of the first rear end plate 1035, a adapting fixed disk 111 is screwed on the support plate 1036, an adapting material channel 1037 is rigidly fixed under the opening, the adapting material channel 1037 communicates the spin-drying device 1 and the high temperature drying device 2, the first bottom plate 1034 is set to a width direction inclined structure, and the opening side of the drain hole is a low end; the supporting seat 104 comprises a supporting roller 1041 and a supporting base 1042, the supporting roller 1041 and the supporting base 1042 are assembled into a whole through a shaft and a bearing, the supporting base 1042 is fixed by adopting a shaft end baffle and a bolt, the supporting base 1042 is in threaded connection with the first shell 103, a groove is arranged on the pulley channel 1022, and the supporting roller 1041 is clamped in the groove of the pulley channel 1022 and is connected with the pulley channel 1022; the switching rotating disc 110 is provided with a circle of grooves, the switching fixed disc 111 is provided with a circle of bosses, and the grooves of the switching rotating disc 110 are spliced with the bosses of the switching fixed disc 111; the high-temperature drying device 2 comprises a front-mounted fan 201, a second shell 202, a drying filter screen 203, side fans 204 and an electric heating tube 205, wherein the front-mounted fan 201 is arranged at the feeding end of the second shell 202 and is communicated with the second shell, the side fans 204 are arranged at two sides of the second shell 202, the front-mounted fan 201 and the side fans 204 are both provided with upward-inclined air deflectors, the drying filter screen 203 is in threaded connection with the second shell 202, the electric heating tube 205 is arranged under the drying filter screen 203 and is fixed at the bottom of the second shell 202; the second housing 202 includes a second top plate 2021, a second front end plate 2022, a set of second side plates 2023, a second bottom plate 2024 and a second rear end plate 2025, where the second front end plate 2022 is perforated, a discharge hole 2026 is rigidly fixed, the second front end plate 2022 and the second rear end plate 2025 are perforated and obliquely screwed with a drying filter 203, the upper end of the drying filter 203 is screwed with the second front end plate 2022, located right below the transfer material channel 1037, the lower end of the drying filter 203 is screwed with the second rear end plate 2025, connected with the discharge hole 2026 rigidly fixed on the second rear end plate 2025, the side fans 204 are screwed on the second side plates 2023 on two sides, the front fan 201 is rigidly fixed on the second rear end plate 2025, the middle of the second bottom plate 2024 is perforated, the drying filter 203 is screwed on the second bottom plate 2024 through the holes, and two sides of the width of the second bottom plate 2024 are provided with anchor bolt holes, and fixed with the ground. The supporting frame 3 comprises a frame 301 and a stand bar 302, the stand bar 302 is arranged on the foot of the frame 301 and is connected with the foot of the frame 301 into a whole, and the frame 301 is lapped with the hollow section steel into a whole.

The specific use is as follows: the starting equipment, the first motor 105, the second motor 106, the front-mounted fan 201 and the electric heating tube 205 are connected to start working, waste plastic sheets after the cleaning process enter the barrel 1021 of the spin-drying barrel 102 through the feed hopper 101, and meanwhile, the spin-drying barrel 102 continuously rolls at a constant speed under the driving of the meshing transmission of the large gear 107 and the small gear 108, so that most of water is thrown out of the plastic sheets under the action of centrifugal force, the thrown-out water is collected at the bottom of the first shell 103, and the collected water is discharged through the drainage pipeline 112. In this process, the spiral blade 1023 continuously rotates in the chain transmission of the driving sprocket 1028 and the driven sprocket 1027, spin-dries the plastic sheet while being screw-fed forward until reaching the transfer material path 1037, and enters the high-temperature drying apparatus 2 from the transfer material path 1037 under the action of gravity. After the plastic sheet reaches the high-temperature drying device 2, the plastic sheet falls onto the drying filter screen 203, the electric heating tube 205 is continuously heated, so that the internal temperature of the second shell 202 is continuously kept at 70-80 ℃, meanwhile, the front fan 201 and the side fan 204 continuously work, the plastic sheet is fully dried by hot air in the drying filter screen 203, the air deflector on the front fan 201 and the side fan 204 enables air flow to blow upwards obliquely, the bottom of the plastic sheet is ensured to be fully heated and turned over, and after the plastic sheet is dried for a long time, the plastic sheet enters the next procedure through the discharge hole 2026.

In a preferred embodiment, the circumference of the tub 1021 is densely provided with water filtering holes, the first bottom plate 1034 is provided with a width direction inclined structure, the opening side of the water filtering holes is a low end, and the water filtering holes are communicated with the water drainage pipeline 112; the above arrangement enables the thrown out water to be quickly separated from the plastic sheet and discharged.

In a preferred embodiment, the pulley path 1022 is provided with a groove, and the supporting roller 1041 is clamped in the groove of the pulley path 1022 and is connected with the pulley path 1022; the switching rotating disc 110 is provided with a circle of grooves, the switching fixed disc 111 is provided with a circle of bosses, and the grooves of the switching rotating disc 110 are spliced with the bosses of the switching fixed disc 111; the above arrangement is designed to be exquisite, so that the barrel 1021 of the spin-drying drum 102 is supported stably, the circular rotation is not limited, and meanwhile, the movement in the length direction can not occur.

In a preferred embodiment, the fixing frame 1024 has a spoke wheel structure, and includes an inner ring, spokes and an outer ring, wherein two ends of the spokes are rigidly connected between the inner ring and the outer ring, and the inner ring is clamped with bearings and is integrated with the mandrel 1025;

in a preferred embodiment, spin-drying drum 102 comprises a tub 1021, a pulley 1022, a spiral blade 1023, a fixing frame 1024, a core shaft 1025 and a bearing seat 1026, wherein spiral blade 1023 is rigidly connected with core shaft 1025 and is arranged inside tub 1021; the arrangement ensures that the feeding is uniform and stable, and the spin-drying and the feeding are not mutually interfered.

In a preferred scheme, a driven sprocket 1027 is arranged at one end of the core shaft 1025, a driving sprocket 1028 is arranged on the second motor 106, the driving sprocket 1028 is linked with the driven sprocket 1027, a large gear 107 is arranged on the outer surface of one end of the barrel 1021, and the large gear 107 is meshed with a small gear 108 arranged on the first motor 105; the device ensures that the transmission of feeding and spin-drying motions is stable, the working procedures are operated independently and are not interfered with each other, the probability of misoperation is reduced, and the safety coefficient, the stability and the service life of equipment are improved.

In a preferred embodiment, the first housing 103 includes a first top plate 1031, a first front end plate 1032, a set of first side plates 1033, a first bottom plate 1034, and a first rear end plate 1035; the second housing 202 includes a second top plate 2021, a second front end plate 2022, a set of second side plates 2023, a second bottom plate 2024, and a second rear end plate 2025; the device has a hexagonal structure, so that the stress of the device is uniform, and the service life of the device is prolonged;

in a preferred solution, the high temperature drying device 2 includes a front blower 201, a second housing 202, a drying filter 203, a side blower 204 and an electrothermal tube 205, the front blower 201 is disposed at a feeding end of the second housing 202 and is connected with the second housing, the side blowers 204 are mounted at two sides of the second housing 202, and both the front blower 201 and the side blowers 204 are provided with air deflectors inclined upwards; a drying filter screen 203 is obliquely and spirally connected between the second front end plate 2022 and the second rear end plate 2025, the upper end of the drying filter screen 203 is spirally connected with the second front end plate 2022 and is positioned right below the transfer material channel 1037, and the lower end of the drying filter screen 203 is spirally connected with the second rear end plate 2025 and is communicated with a discharge hole 2026 rigidly fixed on the second rear end plate 2025; the above arrangement enables the plastic sheet to be fully stirred and turned over on the drying filter screen 203, so that the plastic sheet can be completely dried, and meanwhile, the plastic sheet automatically slides downwards on the air and the inclined drying filter screen 203 from the discharge hole to enter the next procedure.

In a preferred embodiment, the second bottom plate 2024 is provided with a foundation bolt hole, and is fixed with the ground by a bolt; the high-temperature drying device 2 is firmly fixed, which is beneficial to the smooth implementation of plastic sheet drying and discharging.

In a preferred scheme, the supporting frame 3 comprises a frame 301 and a stand bar 302, the stand bar 302 is arranged on the foot of the frame 301 and is connected with the foot of the frame 301 into a whole, and the frame 301 is lapped with the hollow section steel into a whole; the stability of the equipment foundation is guaranteed, the cost is saved, the connection and the assembly of each part and the frame are facilitated, and the operation condition of the monitoring equipment is conveniently observed.

In a preferred scheme, a second front end plate 2022 and a second rear end plate 2025 are provided with holes in an inclined screwing manner, a drying filter screen 203 is screwed with the second front end plate 2022, the upper end of the drying filter screen 203 is positioned right below a transfer material channel 1037, the lower end of the drying filter screen 203 is screwed with the second rear end plate 2025, the drying filter screen 203 is communicated with a discharge hole 2026 rigidly fixed on the second rear end plate 2025, a side fan 204 is screwed on second side plates 2023 on two sides, a hole is formed in the middle of a second bottom plate 2024, and the drying filter screen 203 is screwed on the second bottom plate 2024 through the hole; the arrangement is favorable for the disassembly, assembly and replacement of parts, and the overall service life of the equipment is prolonged.

Claims

1. The utility model provides a waste plastic piece dehydration and device of stoving, includes spin-drying device (1), high temperature drying device (2) and braced frame (3), its characterized in that: the support frame (3) is arranged into an upper layer and a lower layer, the spin-drying device (1) is arranged on the upper layer of the support frame (3), the high-temperature drying device (2) is arranged on the lower layer of the support frame (3), the spin-drying device (1) is communicated with the high-temperature drying device (2), the spin-drying device (1) comprises three parts, namely a feeding part, a spin-drying part and an auxiliary support, the spin-drying part is driven by a motor and is driven by a gear, the feeding part is driven by a motor and is driven by a chain wheel, the auxiliary support part is divided into an inner support and an outer support, the outer support is matched with a roller and a roller slideway, the inner support is matched with a boss and a groove, and a shaft, a bearing and a bearing seat are matched with two structures; the high-temperature drying device (2) comprises a material turning part and a drying part, wherein the material turning part adopts a fan, and the drying part adopts an electric heating device.

2. The device for dehydrating and drying waste plastic sheets according to claim 1, wherein: the spin-drying device (1) comprises a feed hopper (101), a spin-drying roller (102), a first shell (103), a supporting seat (104), a first motor (105) and a second motor (106), the feed hopper (101) is fixed on a supporting frame (3), the lower part is communicated with the spin-drying roller (102), the spin-drying roller (102) is arranged in the first shell (103), a plurality of groups of supporting seats (104) are arranged below the spin-drying roller (102), the supporting seat (104) is in threaded connection with the first shell (103), the spin-drying roller (102) comprises a barrel body (1021), a pulley channel (1022), a helical blade (1023), a fixing frame (1024), a mandrel (1025) and a bearing seat (1026), the pulley channel (1022) is rigidly fixed on the outer surface of the barrel body (1021), the helical blade (1023) is rigidly connected with the mandrel (1025), the helical blade (1023) is arranged in the barrel body (1021) and is fixedly connected with the bearing seat (1026) through the fixing frames (1024) respectively arranged at two ends of the mandrel (1025), the driving sprocket (1028) and the driven sprocket (1027) is arranged at one end of the driving sprocket (1027), the driven sprocket (1027) is arranged on the driven sprocket (107), the big gear (107) is meshed with a pinion (108) arranged on the first motor (105), the first motor (105) and the second motor (106) are respectively connected with a motor seat (109) and a supporting frame (3) in a threaded mode in sequence, a switching rotating disc (110) is connected to the outer surface of the other end of the barrel body (1021) in a threaded mode, the switching rotating disc (110) is connected with a switching fixed disc (111) in a spliced mode, the switching fixed disc (111) is connected to the first shell (103) in a threaded mode, and a drain hole is formed in the first shell (103) to enable the drain pipeline (112) to be connected.

3. The device for dehydrating and drying waste plastic sheets according to claim 2, wherein: the circumference of the valve (1021) is densely provided with water filtering holes.

4. The device for dehydrating and drying waste plastic sheets according to claim 2, wherein: the fixing frame (1024) is of a spoke wheel structure and comprises an inner ring, spokes and an outer ring, wherein the middle of the inner ring and the outer ring is rigidly connected with two ends of the spokes, the inner ring is clamped with a bearing, and the inner ring and the mandrel (1025) are integrated.

5. The device for dehydrating and drying waste plastic sheets according to claim 2, wherein: the first shell (103) comprises a first top plate (1031), a first front end plate (1032), a group of first side plates (1033), a first bottom plate (1034) and a first rear end plate (1035), wherein the first front end plate (1032) is provided with a hole and communicated with a feed hopper (101), a mandrel (1025) penetrates through the hole, the first rear end plate (1035) is provided with a hole through a gear pair and a first motor (105), the mandrel (1025) penetrates through the hole and is connected with a bearing seat (1026) screwed on the first rear end plate (1035), a bearing is installed between the bearing seat (1026) and the mandrel (1025), a supporting plate (1036) is fixedly arranged between the first top plate (1031) and the first bottom plate (1034) close to the inner rigidity of the first rear end plate (1035), a changeover fixed disc (111) is screwed on the supporting plate (6), a changeover material passage (1037) is fixedly arranged below the hole on the first bottom plate (1034) between the first rear end plate (1035) and the supporting plate (1036), a changeover material passage (1) and a drying device (1034) are arranged in a high-temperature water draining structure, and the first bottom plate (1034) is of a high-temperature draining structure.

6. The device for dehydrating and drying waste plastic sheets according to claim 2, wherein: the supporting seat (104) comprises a supporting roller (1041) and a supporting base (1042), the supporting roller (1041) and the supporting base (1042) are assembled into a whole through a shaft and a bearing, a shaft end baffle and a bolt are adopted for fixing, the supporting base (1042) is in threaded connection with the first shell (103), a groove is formed in the pulley channel (1022), and the supporting roller (1041) is clamped in the groove of the pulley channel (1022) and is connected with the pulley channel (1022).

7. The device for dehydrating and drying waste plastic sheets according to claim 2, wherein: the switching rotating disc (110) is provided with a circle of grooves, the switching fixed disc (111) is provided with a circle of bosses, and the grooves of the switching rotating disc (110) are spliced with the bosses of the switching fixed disc (111).

8. The device for dehydrating and drying waste plastic sheets according to claim 1, wherein: the high-temperature drying device (2) comprises a front fan (201), a second shell (202), a drying filter screen (203), a side fan (204) and an electric heating tube (205), wherein the front fan (201) is arranged at the feeding end of the second shell (202) and is communicated with the feeding end of the second shell, the side fan (204) is arranged on two sides of the second shell (202), the front fan (201) and the side fan (204) are both provided with upwardly inclined air deflectors, the drying filter screen (203) is in threaded connection with the second shell (202), and the electric heating tube (205) is arranged under the drying filter screen (203) and is fixed at the bottom of the second shell (202).

9. The apparatus for dehydrating and drying waste plastic sheets according to claim 8, wherein: the second shell (202) comprises a second top plate (2021), a second front end plate (2022), a group of second side plates (2023), a second bottom plate (2024) and a second rear end plate (2025), wherein a discharging hole (2026) is formed in the second front end plate (2022) in a screwed manner, the second front end plate (2022) and the second rear end plate (2025) are obliquely screwed with a drying filter screen (203), the upper end of the drying filter screen (203) is in screwed connection with the second front end plate (2022), the drying filter screen is located under a transfer material channel (1037), the lower end of the drying filter screen (203) is in screwed connection with a discharging hole (2026) which is rigidly fixed on the second rear end plate (2025), a side fan (204) is in screwed connection with the second side plates (2023) on two sides, a front fan (201) is rigidly fixed on the second rear end plate (5), the middle of the second bottom plate (2024) is provided with a hole, the drying filter screen (203) penetrates through the hole screw connection with the second bottom plate (2024), and the second bottom plate (2024) is fixed with two ground bolts.

10. The device for dehydrating and drying waste plastic sheets according to claim 1, wherein: the supporting frame (3) comprises a frame (301) and supporting legs (302), the supporting legs (302) are arranged on the foot parts of the frame (301) and are connected into a whole, and the frame (301) is integrally lapped by adopting hollow section steel.