A multi-group mixing auger conveying type plastic flow drying device

Abstract

The present invention relates to the technical field of plastic drying technology, and specifically discloses a multi-group mixed auger conveying type plastic flow drying device, comprising a frame, on which a feed drying component is arranged, and one side of the frame is provided with an air heater and a bag dust collector connected to the feed drying component; the feed drying component provided in the present invention dries the plastic through an S-shaped multi-circuit formed by a plurality of drying chambers. Compared with the traditional single-pass drying process, the drying device avoids the uneven drying of the plastic and the poor effect, and has a high plastic drying capacity; a reduction motor is provided to drive the operation of the plurality of spiral auger blades, thereby saving power equipment and consuming less electricity; a compensating heating component is provided, and the originally circulating gas is used to drive the fan blades to operate, so that the current generated by the movement of the conductor in the magnetic field is used to power the heating wire, thereby ensuring the temperature of the gas in the intake pipe branch while saving industrial energy consumption, thereby achieving the effect of energy saving and environmental protection.

Description

Technical Field

[0001] The invention relates to the technical field of plastic drying, in particular to a multi-group mixing auger conveying type plastic flow drying device. Background Art

[0002] The existing plastic granule drying devices generally adopt a static one-time drying structure, which often results in incomplete drying of the plastic granules during the drying operation. In addition, the existing drying devices cannot allow the material to flow fully during drying, resulting in a low drying rate for the material.

[0003] A Chinese patent document CN111998662A discloses a plastic particle drying device and a drying method thereof, comprising two symmetrically arranged bases, the bottom surfaces of the two bases are fixedly connected with a group of damping buffers, and the tops of the two groups of damping buffers are fixedly connected with a shell; the peripheral side of the shell is fixedly connected with two symmetrically arranged vibration motors and a hot air generating mechanism; two connecting rings are fixedly connected inside the shell; the inner walls of the two connecting rings are rotatably connected with the drying mechanism through bearings; one end of the air outlet of the hot air generating mechanism is rotatably connected with the drying mechanism through a pipeline. The invention can perform flow conveying drying treatment on the material under the action of the spiral conveying outer sheet and the spiral conveying inner sheet through the design of the spiral conveying outer sheet and the spiral conveying inner sheet; however, the plastic drying effect of the above technical solution needs to be further optimized;

[0004] Therefore, we provide a multi-group mixing auger conveying type plastic flow drying device, which has high plastic drying efficiency, high production capacity and simple operation process. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The problem to be solved by the present invention is to provide a multi-group mixing auger conveying type plastic flow drying device to overcome the defects in the prior art.

[0007] (II) Technical solution

[0008] In order to solve the technical problem, the present invention provides a multi-group mixing auger conveying type plastic flow drying device, comprising a frame, a material conveying and drying assembly is arranged on the frame, and an air heater and a bag dust collector connected to the material conveying and drying assembly are arranged on one side of the frame;

[0009] The feeding and drying assembly comprises a plurality of drying chambers arranged on a frame, wherein both ends of each drying chamber are provided with a feed port and a discharge port, and each adjacent two drying chambers are connected through the feed port and the discharge port respectively, and each drying chamber is connected to a transmission box of the frame, and spiral auger blades which are rotatably arranged in each drying chamber and are transmission-connected to the transmission box, and an air inlet pipe is connected between the bottom of each drying chamber and an air heater, and an air return pipe is connected between the top of each drying chamber and a bag dust collector, and the drying chamber in the feeding and drying assembly conveys materials through spiral auger blades, and the air heater conveys hot air to the drying chamber through the air inlet pipe, and circulates through the air return pipe to the bag dust collector, so that the hot air passing through the drying chamber dries the materials;

[0010] The spiral auger blade is provided with a notch, the cross section of the spiral auger blade is a polygonal convex shape, and the notch end edge of the spiral auger blade overturns the material in the drying chamber;

[0011] The air intake pipe is arranged in a T shape, and a compensating heating component is arranged in the air intake pipe. The compensating heating component includes a fan blade rotatably arranged in the air intake pipe, the fan blade is connected to a rotating rod, and the rotating rod is connected to a conductor. The air intake pipe is symmetrically provided with an N-pole magnetic block and an S-pole magnetic block located on both sides of the conductor, and the conductor is slidably connected with a first ring end and a second ring end. An electric heating wire electrically connected to the first ring end and the second ring end is arranged in the pipeline of the air intake pipe. Gas is passed into the air intake pipe, so that the fan blade in the compensating heating component drives the conductor to rotate in the magnetic field, so that the electric heating wire compensates for heating the gas in the pipeline of the air intake pipe.

[0012] The blower, air heater, reduction motor, induced draft fan and bag dust collector are started by the controller, so that the air heater delivers hot air to the bottom of the drying chamber through the air inlet pipe, and the hot air in the drying chamber flows to the bag dust collector through the return air pipe, so that a stable hot fluid is formed in the drying chamber; at the same time, the plastic to be dried is added to the drying chamber through the feed port, and the reduction motor drives the spiral auger blades on the rotating shaft to rotate, so that the spiral auger blades deliver the plastic in the drying chamber to the next outlet and then discharge it from the discharge port. Through the S-shaped multi-circuit drying process formed in multiple groups of drying chambers, compared with the traditional single-pass drying process, this drying device improves the drying effect of the plastic and avoids the situation of uneven plastic drying and poor effect;

[0013] When fluid is passed into the air intake pipe, the fan blades rotate under the action of the fluid. The rotation of the fan blades drives the magnetic field formed by the conductor between the N-pole magnetic block and the S-pole magnetic block to rotate, so that the conductor moves to cut the magnetic flux lines, so that the first ring end and the second ring end that are slidably connected to the conductor generate current, and the heating wire electrically connected to the first ring end and the second ring end performs compensatory heating on the air passing through the air intake pipe branch to ensure the temperature of the hot air entering the drying chamber, thereby ensuring the drying efficiency of the material in the drying chamber. There is no need to additionally increase the working power of the air heater to increase the gas temperature or to power the heating wire with an external industrial power supply. The already circulating gas is used to drive the fan blades to operate, so that the conductor moves in the magnetic field to generate current to power the heating wire. While ensuring the temperature of the gas in the air intake pipe branch, industrial energy consumption is saved, achieving the technical effect of energy saving and environmental protection.

[0014] Furthermore, four first joints are provided on the air intake pipe, the second joint of the air intake pipe is connected to the air heater, and the heating wire is arranged in the pipeline between the first joint at one end of the air intake pipe and the first joint closer to the fan blades.

[0015] Furthermore, a bracket is provided in the pipeline of the air intake pipe near the second joint, the fan blade is rotatably connected to the bracket through a rotating rod, one end of the conductor is connected to the rotating rod, and the other end of the conductor is slidingly connected to the first ring end and the second ring end respectively, and the first ring end and the second ring end are connected to the wall of the air intake pipe with a fixed wiring portion.

[0016] Furthermore, the air return pipe is arranged in a U shape, the air return pipe is connected to a plurality of third joints, and two adjacent third joints are distributed in a V shape on the air return pipe.

[0017] Furthermore, an air inlet connected to a first joint of an air inlet pipe is provided at the bottom of the drying chamber, and a first switch valve is provided at a second joint of the air inlet pipe.

[0018] Furthermore, an air outlet connected to the third joint of the air return pipe is arranged at the top of the drying chamber, a fourth joint is arranged at the bottom of the air return pipe, and a second switch valve is arranged near the fourth joint of the air return pipe.

[0019] Furthermore, the plurality of air inlet pipes are respectively located between two adjacent third joints.

[0020] Furthermore, a reduction motor is provided on the transmission box, the spiral auger blades are connected to a rotating shaft, the rotating shaft is rotatably connected to the transmission box, a transmission wheel is provided at one end of the rotating shaft, and the reduction motor and the transmission wheel are connected through a transmission belt.

[0021] Furthermore, a paddle is provided at one end of the spiral auger blade.

[0022] Furthermore, the air heater is connected to a blower, and an induced draft fan is connected between the fourth joint and the bag filter.

[0023] The present invention provides a multi-group mixing auger conveying type plastic flow drying device:

[0024] 1. The feeding and drying component provided in the present invention starts the operation of the blower, air heater, reduction motor, induced draft fan and bag dust collector through a controller, so that the air heater conveys hot air to the bottom of the drying chamber through the air inlet pipe, and the hot air in the drying chamber flows into the bag dust collector through the return air pipe, so that a stable hot fluid is formed in the drying chamber; at the same time, the plastic to be dried is added into the drying chamber through the feed port, and the reduction motor drives the spiral auger blades on the rotating shaft to rotate, so that the spiral auger blades convey the plastic in the drying chamber to the next outlet and then discharge it from the discharge port. Through the S-shaped multi-circuit drying treatment formed in multiple groups of drying chambers, compared with the traditional single-pass drying treatment, the drying device avoids the uneven drying and poor effect of plastics, and through the multiple groups of mixed drying chambers, the plastic drying capacity is high; by arranging a reduction motor to drive the operation of multiple groups of spiral auger blades, power equipment is saved and power consumption is low.

[0025] 2. The present invention provides a compensating heating component. When fluid is introduced into the air intake pipe, the fan blades rotate under the action of the fluid. The rotation of the fan blades drives the magnetic field formed by the conductor between the N-pole magnetic block and the S-pole magnetic block to rotate, so that the conductor moves to cut the magnetic flux lines, so that the first ring end and the second ring end slidingly connected to the conductor generate current, and the heating wire electrically connected to the first ring end and the second ring end performs compensatory heating on the air passing through the air intake branch to ensure the temperature of the hot air entering the drying chamber, thereby ensuring the drying efficiency of the material in the drying chamber. There is no need to additionally increase the working power of the air heater to increase the gas temperature or to power the heating wire with an external industrial power supply. The already circulating gas is used to drive the fan blades to operate, so that the conductor moves in the magnetic field to generate current to power the heating wire. While ensuring the temperature of the gas in the air intake branch, industrial energy consumption is saved, thereby achieving the technical effect of energy saving and environmental protection.

[0026] 3. The present invention provides a U-shaped return air pipe to cooperate with a T-shaped air intake pipe to be connected and used in conjunction with multiple groups of drying chambers, wherein the multiple third joints on the U-shaped return air pipe are distributed in a V shape to facilitate the recovery of fluid on both sides of the middle part of the drying chamber; the T-shaped air intake pipe is connected to the bottom of the drying chamber with multiple first joints distributed at equal intervals to achieve the goal of transporting hot air to the drying chamber as evenly as possible to ensure the drying effect of materials at different positions in the drying chamber. Since the branches of the first joints at both ends of the air intake pipe are far from the paths of the second joints, considering that the hot air will cause temperature loss when circulating in a longer path, resulting in a lower temperature of the hot air entering the drying chamber, which affects the drying efficiency of the materials, the present device provides a compensating heating component, and adds electric heating wires to the longer path branches at both ends of the air intake pipe, and uses the originally circulating gas to drive the operation of the compensating heating component, so that the heating wire performs compensatory heating on the fluid passing through the branch, thereby providing a guarantee for the drying efficiency of materials at different positions in the drying chamber. The overall structure of the present device is compact, space-saving, and the operation process is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 is a first stereogram of the present invention;

[0029] Figure 2 is a second stereogram of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of the material feeding and drying component of the present invention;

[0031] Figure 4 It is a schematic diagram of the connection between the frame, the drying chamber and the transmission box of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the air intake pipe and the air return pipe of the present invention;

[0033] Figure 6 It is a schematic diagram of the air intake pipe structure of the present invention;

[0034] Figure 7 It is a schematic diagram of the structure of the air return pipe of the present invention;

[0035] Figure 8 A top view of the material feeding and drying assembly of the present invention;

[0036] Fig. 9 is a cutaway view of the present invention;

[0037] Fig.10 It is a schematic diagram of the structure of the compensating heating component in the air intake pipe of the present invention;

[0038] Fig.11 It is a front view of the air intake pipe of the present invention;

[0039] Fig.12 is a cutaway view of an air intake pipe of the present invention;

[0040] Fig.13 It is a three-dimensional diagram of the spiral auger blade structure of the present invention;

[0041] Fig.14 This is a front view of the spiral auger blade structure of the present invention;

[0042] Fig.15 It is a side view of the spiral auger blade structure of the present invention;

[0043] The names of the components corresponding to the various figure marks in the figure are: 1. frame; 2. transmission box; 201. reduction motor; 202. transmission belt; 3. drying chamber; 301. feed port; 302. discharge port; 303. air inlet; 304. air outlet; 4. air inlet pipe; 401. first joint; 402. second joint; 5. return air pipe; 501. third joint; 502. fourth joint; 6. air heater; 601. blower; 7. bag filter; 701. induced draft fan; 8. rotating shaft; 801. spiral auger blade; 802. dial plate; 9. bracket; 901. fan blade; 902. N-pole magnetic block; 903. S-pole magnetic block; 904. first ring end; 905. second ring end; 906. conductor; 10. heating wire. DETAILED DESCRIPTION

[0044] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0046] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0047] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0048] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0049] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0050] See also Figures 1 to 15 The present invention provides a multi-group mixing auger conveying type plastic flow drying device, comprising a frame 1, a material conveying and drying component is arranged on the frame 1, and an air heater 6 and a bag dust collector 7 connected with the material conveying and drying component are arranged on one side of the frame 1;

[0051] The material conveying and drying component includes a plurality of drying cabins 3 arranged on a frame 1, and both ends of each drying cabin 3 are provided with a feed port 301 and a discharge port 302, and each adjacent drying cabin 3 is communicated through the feed port 301 and the discharge port 302 respectively, and each drying cabin 3 is connected to the transmission box 2 of the frame 1, and a spiral auger blade 801 which is transmission-connected to the transmission box 2 is rotatably arranged in each drying cabin 3, and an air inlet pipe 4 is connected between the cabin bottom of each drying cabin 3 and the air heater 6, and an air return pipe 5 is connected between the cabin top of each drying cabin 3 and the bag dust collector 7, and the drying cabin 3 in the material conveying and drying component conveys materials through the spiral auger blade 801, and the air heater 6 conveys hot air to the drying cabin 3 through the air inlet pipe 4, and circulates to the bag dust collector 7 through the air return pipe 5, so that the hot air passing through the drying cabin 3 dries the materials;

[0052] The spiral auger blade 801 is provided with a notch for tumbling the material during transportation. The cross section of the spiral auger blade 801 is a polygonal convex shape. The notch end of the spiral auger blade 801 tumbles the material in the drying chamber 3.

[0053] The air intake pipe 4 is arranged in a T shape, and a compensating heating component is arranged in the air intake pipe 4. The compensating heating component includes a fan blade 901 rotatably arranged in the air intake pipe 4, the fan blade 901 is connected to a rotating rod, and the rotating rod is connected to a conductor 906. The air intake pipe 4 is symmetrically provided with an N-pole magnetic block 902 and an S-pole magnetic block 903 located on both sides of the conductor 906. The conductor 906 is slidably connected with a first ring end 904 and a second ring end 905. An electric heating wire 10 electrically connected to the first ring end 904 and the second ring end 905 is arranged in the pipeline of the air intake pipe 4. Gas is passed into the air intake pipe 4, so that the fan blade 901 in the compensating heating component drives the conductor 906 to rotate in the magnetic field, so that the electric heating wire 10 performs compensatory heating on the gas in the pipeline of the air intake pipe 4.

[0054] The blower 601, the air heater 6, the reduction motor 201, the induced draft fan 701 and the bag filter 7 are started by the controller, so that the air heater 6 delivers hot air to the bottom of the drying chamber 3 through the air inlet pipe 4, and the hot air in the drying chamber 3 flows to the bag filter 7 through the return air pipe 5, so that a stable hot fluid is formed in the drying chamber 3; at the same time, the plastic to be dried is added to the drying chamber 3 through the feed port 301, and the reduction motor 201 drives the spiral auger blades 801 on the rotating shaft 8 to rotate, so that the spiral auger blades 801 deliver the plastic in the drying chamber 3 to the next outlet and then discharge it from the discharge port 302. Through the S-shaped multi-circuit drying process formed in multiple groups of drying chambers 3, compared with the traditional single-pass drying process, the drying device improves the drying effect of the plastic and avoids the situation of uneven drying of the plastic and poor effect;

[0055] When fluid is passed into the air intake pipe 4, the fan blade 901 rotates under the action of the fluid. The rotation of the fan blade 901 drives the magnetic field formed by the conductor 906 between the N-pole magnetic block 902 and the S-pole magnetic block 903 to rotate, so that the conductor 906 moves to cut the magnetic flux lines, so that the first ring end 904 and the second ring end 905 that are slidably connected to the conductor 906 generate current, so that the heating wire 10 electrically connected to the first ring end 904 and the second ring end 905 performs compensatory heating on the air passing through the branch of the air intake pipe 4 to ensure the temperature of the hot air entering the drying chamber 3, thereby ensuring the drying efficiency of the material in the drying chamber 3. There is no need to additionally increase the working power of the air heater 6 to increase the gas temperature or to power the heating wire 10 with an external industrial power supply. The already circulating gas is used to drive the fan blade 901 to operate, so that the conductor 906 moves in the magnetic field to generate current to power the heating wire 10. While ensuring the temperature of the gas in the branch of the air intake pipe 4, industrial energy consumption is saved, achieving the technical effect of energy saving and environmental protection.

[0056] See also Figures 5 to 12 Four first joints 401 are provided on the air intake pipe 4, the second joint 402 of the air intake pipe 4 is connected to the air heater 6, the heating wire 10 is arranged in the pipeline between the first joint 401 at one end of the air intake pipe 4 and the first joint 401 closer to the fan blade 901, and a bracket 9 is provided in the pipeline of the air intake pipe 4 close to the second joint 402, the fan blade 901 is rotatably connected to the bracket 9 through a rotating rod, one end of the conductor 906 is connected to the rotating rod, and the other end of the conductor 906 is slidably connected to the first ring end 904 and the second ring end 905 respectively, and the first ring end 904 and the second ring end 905 are connected to the pipe wall of the air intake pipe 4 with a fixed wiring portion.

[0057] See also Figures 3 to 9 The return air pipe 5 is arranged in a U shape, and is connected with a plurality of third joints 501, and two adjacent third joints 501 are distributed in a V shape on the return air pipe 5. An air inlet 303 connected with the first joint 401 of the air inlet pipe 4 is arranged at the bottom of the drying chamber 3, and a first switch valve is arranged at the second joint 402 of the air inlet pipe 4. An air outlet 304 connected with the third joint 501 of the return air pipe 5 is arranged at the top of the drying chamber 3, a fourth joint 502 is arranged at the bottom of the return air pipe 5, and a second switch valve is arranged near the fourth joint 502 of the return air pipe 5.

[0058] See also Figures 2 to 15 , multiple air inlet pipes 4 are respectively located between two adjacent third joints 501, a reduction motor 201 is provided on the transmission box 2, the spiral auger blade 801 is connected to the rotating shaft 8, the rotating shaft 8 is rotatably connected to the transmission box 2, a transmission wheel is provided at one end of the rotating shaft 8, the reduction motor 201 and the transmission wheel are connected through a transmission belt 202, a paddle 802 is provided at one end of the spiral auger blade 801, the air heater 6 is connected to the blower 601, and an induced draft fan 701 is connected between the fourth joint 502 and the bag dust collector 7.

[0059] This embodiment provides a multi-group mixing auger conveying type plastic flow drying device:

[0060] The blower 601, the air heater 6, the reduction motor 201, the induced draft fan 701 and the bag filter 7 are started by the controller, so that the air heater 6 delivers hot air to the bottom of the drying chamber 3 through the air inlet pipe 4, and the hot air in the drying chamber 3 flows to the bag filter 7 through the return air pipe 5, so that a stable hot fluid is formed in the drying chamber 3; at the same time, the plastic to be dried is added to the drying chamber 3 through the feed port 301, and the reduction motor 201 drives the spiral auger blades 801 on the rotating shaft 8 to rotate, so that the spiral auger blades 801 tumble and transport the plastic in the drying chamber 3 to the next outlet and then discharge it from the discharge port 302. Through the S-shaped multi-circuit drying process formed in multiple groups of drying chambers 3, compared with the traditional single-pass drying process, the drying device improves the drying effect of the plastic and avoids the occurrence of uneven plastic drying and poor effect;

[0061] When fluid is passed into the air intake pipe 4, the fan blade 901 rotates under the action of the fluid. The rotation of the fan blade 901 drives the magnetic field formed by the conductor 906 between the N-pole magnetic block 902 and the S-pole magnetic block 903 to rotate, so that the conductor 906 moves to cut the magnetic flux lines, so that the first ring end 904 and the second ring end 905 that are slidably connected to the conductor 906 generate current, so that the heating wire 10 electrically connected to the first ring end 904 and the second ring end 905 performs compensatory heating on the air passing through the branch of the air intake pipe 4 to ensure the temperature of the hot air entering the drying chamber 3, thereby ensuring the drying efficiency of the material in the drying chamber 3. There is no need to additionally increase the working power of the air heater 6 to increase the gas temperature or to power the heating wire 10 with an external industrial power supply. The already circulating gas is used to drive the fan blade 901 to operate, so that the conductor 906 moves in the magnetic field to generate current to power the heating wire 10. While ensuring the temperature of the gas in the branch of the air intake pipe 4, industrial energy consumption is saved, achieving the technical effect of energy saving and environmental protection.

[0062] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0063] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A multi-group mixing auger conveying type plastic flow drying device, comprising a frame (1), characterized in that: The frame (1) is provided with a material conveying and drying component, and one side of the frame (1) is provided with an air heater (6) and a bag dust collector (7) which are in communication with the material conveying and drying component; The material feeding and drying assembly comprises a plurality of drying chambers (3) arranged on a frame (1), each group of drying chambers (3) being provided with a feed inlet (301) and a discharge outlet (302) at both ends, each adjacent group of drying chambers (3) being communicated with each other through the feed inlet (301) and the discharge outlet (302), each group of drying chambers (3) being connected to a transmission box (2) of the frame (1), each group of drying chambers (3) being provided with a spiral auger blade (801) which is rotatably connected to the transmission box (2), and each group of drying chambers (3) being provided with a spiral auger blade (801) which is rotatably connected to the transmission box (2). An air inlet pipe (4) is connected between the bottom of the drying chamber (3) and the air heater (6), and an air return pipe (5) is connected between the top of each group of drying chambers (3) and the bag dust collector (7). The drying chamber (3) in the material conveying and drying assembly conveys materials through the spiral auger blades (801), and the air heater (6) conveys hot air to the drying chamber (3) through the air inlet pipe (4), and the hot air flows into the bag dust collector (7) through the air return pipe (5), so that the hot air passing through the drying chamber (3) dries the materials; The spiral auger blade (801) is provided with a notch, the cross section of the spiral auger blade (801) is polygonally convex, and the notch end edge of the spiral auger blade (801) overturns the material in the drying chamber (3); The air intake pipe (4) is arranged in a T-shape, a compensating heating component is arranged in the air intake pipe (4), the compensating heating component comprises a fan blade (901) rotatably arranged in the air intake pipe (4), the fan blade (901) is connected to a rotating rod, the rotating rod is connected to a conductor (906), an N-pole magnetic block (902) and an S-pole magnetic block (903) are symmetrically arranged in the air intake pipe (4) and are located on both sides of the conductor (906), the conductor (906) is slidably connected to a first ring end (904) and a second ring end (905), an electric heating wire (10) electrically connected to the first ring end (904) and the second ring end (905) is arranged in the pipeline of the air intake pipe (4), gas is passed into the air intake pipe (4), so that the fan blade (901) in the compensating heating component drives the conductor (906) to rotate in the magnetic field, so that the electric heating wire (10) performs compensating heating on the gas in the pipeline of the air intake pipe (4); The air intake pipe (4) is provided with four first joints (401), the second joint (402) of the air intake pipe (4) is connected to the air heater (6), and the heating wire (10) is arranged in the pipeline between the first joint (401) at one end of the air intake pipe (4) and the first joint (401) closer to the fan blade (901); A bracket (9) is provided in the pipeline of the air intake pipe (4) near the second joint (402); the fan blade (901) is rotatably connected to the bracket (9) via a rotating rod; one end of the conductor (906) is connected to the rotating rod; the other end of the conductor (906) is slidably connected to the first ring end (904) and the second ring end (905), respectively; the first ring end (904) and the second ring end (905) are connected to the wall of the air intake pipe (4) via a fixed wiring portion; The air return pipe (5) is arranged in a U shape, the air return pipe (5) is connected to a plurality of third joints (501), and two adjacent third joints (501) are distributed in a V shape on the air return pipe (5).

2. The multi-group mixing auger conveying type plastic flow drying device according to claim 1, characterized in that: An air inlet (303) connected to a first joint (401) of an air inlet pipe (4) is provided at the bottom of the drying chamber (3), and a first switch valve is provided at a second joint (402) of the air inlet pipe (4).

3. The multi-group mixing auger conveying type plastic flow drying device according to claim 2, characterized in that: The top of the drying chamber (3) is provided with an air outlet (304) connected to the third joint (501) of the return air pipe (5), the bottom of the return air pipe (5) is provided with a fourth joint (502), and the return air pipe (5) is provided with a second switch valve near the fourth joint (502).

4. The multi-group mixing auger conveying type plastic flow drying device according to claim 2, characterized in that: The plurality of air inlet pipes (4) are respectively located between two adjacent third joints (501).

5. The multi-group mixing auger conveying type plastic flow drying device according to claim 1, characterized in that: The transmission box (2) is provided with a reduction motor (201), the spiral auger blade (801) is connected to a rotating shaft (8), the rotating shaft (8) is rotatably connected to the transmission box (2), a transmission wheel is provided at one end of the rotating shaft (8), and the reduction motor (201) and the transmission wheel are connected via a transmission belt (202).

6. The multi-group mixing auger conveying type plastic flow drying device according to claim 1, characterized in that: A paddle (802) is provided at one end of the spiral auger blade (801).

7. The multi-group mixing auger conveying type plastic flow drying device as claimed in claim 3, characterized in that: The air heater (6) is connected to a blower (601), and an induced draft fan (701) is connected between the fourth joint (502) and the bag filter (7).

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