Automatic plastic particle feeding equipment with impurity removal mechanism

Abstract

The invention discloses automatic plastic particle feeding equipment with an impurity removal mechanism, and relates to the technical field of plastic processing equipment, the automatic plastic particle feeding equipment comprises a feeding barrel, a drying barrel and a stirring barrel which are vertically and downwards distributed and integrally formed, and further comprises a dust removal mechanism, an anti-blocking assembly, a drying mechanism and a stirring mechanism, the dust removal mechanism is located in the feeding barrel and comprises a plurality of first electrode bars distributed at equal intervals, an inner cavity of the feeding barrel is of a cross-shaped structure, and the top ends of the first electrode bars are hinged to the inner walls of the two sides and the inner walls of the two sides of the feeding barrel respectively. The plastic particle automatic feeding equipment with the impurity removal mechanism has the advantages that the influence of electrostatic friction on plastic particles can be reduced, the separation efficiency of impurities and the plastic particles is improved, and the subsequent processing quality effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic processing equipment, and particularly relates to a plastic particle automatic feeding equipment with a foreign matter removing mechanism. BACKGROUND

[0002] The raw material storage and initial conveying plastic particles are usually stored in sealed silos, ton bags or bags, and the particles are preliminarily conveyed to the entrance of the automatic feeding equipment by manual or mechanical operation, then the impurities on the surface of the plastic particles are screened, and finally the plastic particles are conveyed to the processing equipment such as injection molding machine and extruder, the plastic particles are injected into the mold through the nozzle and pouring system, and then the mold is cooled to form a product or the melt is conveyed to form an extrusion.

[0003] However, during the conveying process of the plastic particles, static electricity is generated due to the mutual friction between the particles, which can attract small dust, fibers and plastic debris in the environment, and then form a non-metallic false impurity group. However, the traditional foreign matter removing mechanism has limited ability to deal with such non-metallic false impurity groups, and it is difficult to effectively separate them. This not only may cause the equipment to misjudge these non-metallic false impurity groups as normal particles, affecting the subsequent processing quality, but also easily causes the blockage of the equipment, reducing the production efficiency.

[0004] For example, conventional equipment often ignores the influence of static electricity on plastic particles and only focuses on quickly identifying and screening metal, stone and other impurities. This single foreign matter removing method cannot meet the needs of removing non-metallic false impurity groups in actual production, making it difficult to effectively guarantee the quality of plastic particles. SUMMARY

[0005] The present application discloses a plastic particle automatic feeding equipment with a foreign matter removing mechanism, which can solve the technical problem that the traditional foreign matter removing mechanism has limited ability to deal with such non-metallic false impurity groups, and it is difficult to effectively separate them. This not only may cause the equipment to misjudge these non-metallic false impurity groups as normal particles, affecting the subsequent processing quality, but also easily causes the blockage of the equipment, reducing the production efficiency.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: The utility model provides a kind of automatic feeding equipment of plastic particle with impurity removal mechanism, including feeding cylinder, drying cylinder and stirring cylinder, the feeding cylinder, the drying cylinder and the stirring cylinder vertically downward distribution and integrally formed, still include: dust removal mechanism, anti-blocking component, drying mechanism and stirring mechanism, the dust removal mechanism is located in the inside of the feeding cylinder, the dust removal mechanism includes several first electrode bars of equidistance distribution, the inner cavity of the feeding cylinder is cross-shaped structure, the top of several first electrode bars is respectively hinged to the two sides inner wall and two edges inner wall of the feeding cylinder, the bottom of the first electrode bar is equipped with insulating lug, one end of the insulating lug is fixedly connected with reset spring, the end of the reset spring away from the insulating lug is fixedly installed on the inner wall of the feeding cylinder, the first electrode bar is inclined downward, and the top outer wall of the feeding cylinder is equipped with driving assembly.

[0007] With the above technical scheme, the influence of static friction on plastic particles can be reduced, the separation efficiency of impurities and plastic particles can be improved, and the subsequent processing quality can be improved. Specifically, the plastic particles enter the top of the feeding cylinder through the external conveying device and flow downward along the cross-shaped inner cavity. During the feeding process, the plastic particles are prone to generate static electricity due to friction, and are prone to adsorb tiny dust, fibers or their own debris in the environment to form non-metallic false impurity groups. When the equipment is running, the four ion wind bars are electrified to release positive and negative ion flow into the feeding cylinder. The static charge on the surface of the plastic particles is neutralized by the ion wind bar, which reduces the probability of agglomeration caused by electrostatic attraction between the plastic particles. When the plastic particles fall, the plastic particles or impurity groups touch the first electrode bar after electrification, triggering the compression and rebound of the reset spring at the bottom of the first electrode bar. The rotation disturbance of the driving assembly further destroys the agglomeration structure formed by static adsorption. At the same time, the ions released by the ion wind bar and the electrode bar work together to accelerate the dissipation of static electricity on the surface of the plastic particles. Part of the tiny dust, fibers and other lightweight impurities that are not completely neutralized by static electricity are lifted by the ion wind bar and separated from the plastic particles. The dust is sucked by the negative pressure fan through the dust suction port, and then collected in the collection cover after being separated by the filter screen. This avoids dust entering the subsequent section with plastic particles.

[0008] In a preferred scheme, the anti-blocking component is located on both sides of the mounting column, and the anti-blocking component includes two electric push rods, the fixed end of the electric push rod is fixedly installed inside the mounting column, and the movable end of the electric push rod is fixedly connected with several second electrode bars equidistantly distributed.

[0009] In this scheme, the electric push rod intermittently pushes the second electrode bar outward to form an "X" cross structure with the first electrode bar. The mechanical disturbance and the reset spring separate the jammed impurity groups. When the second electrode bar is electrified, it can assist in releasing ions to further neutralize local static electricity and prevent false impurity groups from being jammed in the gap between the first electrode bars.

[0010] In a preferred scheme, the drying mechanism is located inside the drying cylinder, the drying mechanism comprises two heating bins and two symmetrically distributed fixed supports, the inside of the heating bin is provided with a heating ring, the first fan is installed on the fixed support, the air outlet of the first fan is fixedly connected with a mounting pipe and a filter core, the outer wall of the mounting pipe is provided with a first branch pipe and a second branch pipe, one end of the mounting pipe and one end of the first branch pipe extend into the inside of the two heating bins respectively, fifty air injection ports are opened in the inside of the drying cylinder, twenty air injection ports are provided with first nozzles on the inner wall, and thirty air injection ports are provided with second nozzles on the inner wall, and the directions of the first nozzles and the second nozzles are both inclined upward.

[0011] In the scheme, the heating rings are installed in the two heating bins respectively, air flowing through the heating bin is heated to a set temperature by converting electric energy into heat energy, the high-speed airflow generated by the fan is introduced into the inside of the heating bin through the mounting pipe and the first branch pipe, the airflow is heated into hot air after being in contact with the heating ring, two independent hot air outputs are formed, the hot air is uniformly sprayed to the surface of the particles through the air injection ports in the inside of the drying cylinder, the first nozzles provide strong upward airflow for the particles in the dispersed area, avoiding the particles being blown away by the high-speed airflow, the second nozzles provide gentle upward airflow for the area with dense accumulation, the contact probability of the plastic particles and the hot air is enhanced, and the falling time of the plastic particles is delayed, the contact time with the hot air is prolonged, due to the different densities of the plastic particles and the non-metallic false impurity groups, the plastic particles and part of the non-metallic false impurity groups are separated by using the difference in the suspension speed of different substances in the airflow, the lighter non-metallic false impurity groups may move upward with the airflow and be finally separated by the negative pressure fan, and the heavier plastic particles move downward, so that the separation is realized. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic view of the overall structure of a plastic particle automatic feeding equipment with a impurity removal mechanism.

[0013] Figure 2 It is a schematic view of the overall structure of a plastic particle automatic feeding equipment with a impurity removal mechanism. Figure 1 It is an enlarged schematic view of the structure at A of the plastic particle automatic feeding equipment with a impurity removal mechanism.

[0014] Figure 3 It is a front view of a plastic particle automatic feeding equipment with a impurity removal mechanism.

[0015] Figure 4 It is a top view of a plastic particle automatic feeding equipment with a impurity removal mechanism.

[0016] Figure 5 It is a schematic view of the overall structure of a plastic particle automatic feeding equipment with a impurity removal mechanism. Figure 4 It is an enlarged schematic view of the structure at B of the plastic particle automatic feeding equipment with a impurity removal mechanism.

[0017] Figure 6 A dust removal mechanism structural diagram of a plastic particle automatic feeding equipment with a impurity removal mechanism is provided.

[0018] Figure 7 A first electrode rod structure schematic diagram of a plastic particle automatic feeding equipment with a impurity removal mechanism is provided.

[0019] Figure 8 A driving assembly and anti-blocking assembly structure schematic diagram of a plastic particle automatic feeding equipment with a impurity removal mechanism is provided.

[0020] Figure 9 A drying mechanism structure schematic diagram of a plastic particle automatic feeding equipment with a impurity removal mechanism is provided.

[0021] Figure 10 A stirring mechanism structure schematic diagram of a plastic particle automatic feeding equipment with a impurity removal mechanism is provided.

[0022] Figure 11 A heating bin structure top view of a plastic particle automatic feeding equipment with a impurity removal mechanism is provided.

[0023] Figure 12 A dustproof net structure schematic diagram of a plastic particle automatic feeding equipment with a impurity removal mechanism is provided.

[0024] In the figure: 1, feeding cylinder; 2, collecting cover; 3, sealing cover; 4, negative pressure fan; 5, connecting pipe; 6, first fan; 7, stirring cylinder; 8, mounting pipe; 9, first branch pipe; 10, second branch pipe; 11, heating bin; 12, drying cylinder; 13, ion wind rod; 14, dustproof net; 15, first electrode rod; 16, dust suction port; 17, stirring blade; 18, support frame; 19, return spring; 20, mounting column; 21, electric push rod; 22, second electrode rod; 23, bottom disc; 24, first nozzle; 25, second nozzle; 26, guide plate; 27, guide cover; 28, stirring rod; 29, driving motor; 30, fixing frame; 31, heating ring; 32, limiting strip. DETAILED DESCRIPTION

[0025] REFERENCE Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 12The utility model provides a kind of plastic particle automatic feeding equipment with impurity removal mechanism, including feeding cylinder 1, drying cylinder 12 and stirring cylinder 7, feeding cylinder 1, drying cylinder 12 and stirring cylinder 7 vertically downward distribution and integrally formed, still include: dust removal mechanism, anti-blocking component, drying mechanism and stirring mechanism, dust removal mechanism is located in the inside of feeding cylinder 1, dust removal mechanism includes several first electrode bars 15 distributed at equal intervals, the inner cavity of feeding cylinder 1 is cross-shaped structure, the top of several first electrode bars 15 is respectively hinged to the two sides inner wall and two edges inner wall of feeding cylinder 1, the bottom of first electrode bar 15 is equipped with insulating lug, one end of insulating lug is fixedly connected with return spring 19, the end of return spring 19 away from insulating lug is fixedly installed on the inner wall of feeding cylinder 1, first electrode bar 15 is arranged obliquely downward, and the top outer wall of feeding cylinder 1 is equipped with driving assembly.

[0026] Wherein, driving assembly includes support frame 18 and bottom disc 23, the bottom outer wall of support frame 18 is connected with mounting column 20 by bearing, the inside and top outer wall of bottom disc 23 are equipped with first motor and several stirring blades 17 distributed at equal intervals respectively, the output shaft of first motor is fixedly connected with the bottom outer wall of mounting column 20, first motor drives mounting column 20 to rotate, and stirring blade 17 on bottom disc 23 rotates synchronously with mounting column 20, and the plastic particles falling are spirally stirred, and potential agglomerates are broken up, to ensure that particles are dispersed and fall.

[0027] In the specific implementation process, anti-blocking component is located at the two sides of mounting column 20, and the anti-blocking component includes two electric push rods 21, the fixed end of electric push rod 21 is fixedly installed in the inside of mounting column 20, and the movable end of electric push rod 21 is fixedly connected with several second electrode bars 22 distributed at equal intervals, to prevent false impurity group from being stuck in the gap between first electrode bar 15, electric push rod 21 intermittently pushes second electrode bar 22 to extend outward, and forms the "X" cross structure with first electrode bar 15, and the impurity group stuck is separated by mechanical disturbance and return spring 19, and when second electrode bar 22 is in energized state, can assist to release ion, to further neutralize local static electricity.

[0028] Wherein, bottom disc 23 and the bottom inner wall of feeding cylinder 1 form discharge port.

[0029] In the specific use process, the circumferential outer wall of the feeding cylinder 1 is provided with a plurality of evenly distributed dust suction ports 16, the inner wall of the dust suction port 16 is provided with a filter screen, the dust suction port 16 corresponds to the first electrode rod 15, the outer wall of the feeding cylinder 1 is fixedly connected with a collecting cover 2 through bolts, the outer wall of the collecting cover 2 is provided with four equally spaced negative pressure fans 4, the air suction port of the negative pressure fan 4 extends to the inside of the collecting cover 2, the corners of the inner cavity are all designed with round corners, the corners of the inner cavity of the feeding cylinder 1 are transitioned with round corners to reduce the flow resistance of the particles, avoid the accumulation of particles and the accumulation of static electricity caused by the right angle dead angle, and the fine dust and fibers lifted by the ion wind rod 13 during the falling process of the plastic particles rise with the airflow, enter the collecting cover 2 through the dust suction port 16 corresponding to the first electrode rod 15, and after the negative pressure fan 4 is started, a negative pressure is formed in the collecting cover 2 through the air suction port to suck the dust-containing airflow into the cover, and the filter screen on the inner wall of the dust suction port 16 intercepts the plastic particles, while the dust passes through the mesh hole of the filter screen and is collected by the negative pressure fan 4 to realize the preliminary separation of the light impurities and the plastic particles.

[0030] The corners of the inner cavity are provided with mounting ports, the inner wall of the mounting port is provided with a dustproof screen 14, and the top outer wall of the feeding cylinder 1 is provided with four equally spaced fixing grooves, the fixing grooves are communicated with the mounting ports, and the ion wind rod 13 is installed on the inner wall of the fixing groove.

[0031] The above working principle and use effect are: the plastic particles enter the top of the feeding cylinder 1 through an external conveying device such as a vibrating feeder, flow downward along the cross-shaped inner cavity, and the plastic particles are easy to produce static electricity during the feeding process, easy to adsorb fine dust, fibers or their own debris in the environment to form non-metallic pseudo impurity groups, during the operation of the equipment, the four ion wind rods 13 are electrified to release positive and negative ion flow into the feeding cylinder 1, neutralize the static charge on the surface of the plastic particles through the ion wind rod 13, reduce the agglomeration probability caused by the electrostatic attraction between the plastic particles, when the plastic particles fall, the plastic particles or impurity groups touch the first electrode rod 15 after electrification, trigger the compression and rebound of the reset spring 19 at the bottom, cooperate with the rotation disturbance of the driving assembly, further destroy the agglomeration structure formed by the electrostatic adsorption, at the same time, the ions released by the ion wind rod 13 and the electrode rod jointly act to accelerate the dissipation of the static electricity on the surface of the plastic particles, part of the fine dust, fibers and other light impurities not completely neutralized by static electricity are lifted by the ion wind rod 13 and separated from the plastic particles, are sucked by the negative pressure fan 4 through the dust suction port 16, and then are collected in the collecting cover 2 after being separated by the filter screen, so that the dust is prevented from entering the subsequent section with the plastic particles, the device uses high-voltage ionized air to generate positive and negative ion wind, and lets the ion wind directly blow to the non-metallic pseudo impurity group, and the positive and negative ions in the ion wind can neutralize the static electricity on the surface of the plastic particles.

[0032] Referring to Figure 2 , Figure 3 , Figure 9 and Figure 11In a preferred embodiment, the drying mechanism is located inside the drying cylinder 12, and the drying mechanism comprises two heating bins 11 and two symmetrically distributed fixed supports, the inside of the heating bin 11 is provided with a heating ring 31, the first fan 6 is installed on the fixed support, the outlet of the first fan 6 is fixedly connected with the mounting pipe 8 and the filter core, the outer wall of the mounting pipe 8 is provided with the first branch pipe 9 and the second branch pipe 10, one end of the mounting pipe 8 and one end of the first branch pipe 9 respectively extend to the inside of the two heating bins 11, fifty air injection ports are opened in the inside of the drying cylinder 12, the inner wall of twenty air injection ports is installed with the first nozzle 24, the inner wall of the other thirty air injection ports is installed with the second nozzle 25, and the directions of the first nozzle 24 and the second nozzle 25 are both inclined upward.

[0033] The inside of the drying cylinder 12 is provided with two stepped annular protrusions, the drying cylinder 12 is a conical structure, the inner wall of the drying cylinder 12 is provided with two groups of flow guide assemblies near the bottom end position, the flow guide assembly comprises ten flow guide plates 26, the flow guide plate 26 is a spiral structure, and the flow guide plate 26 is inclined downward, the drying cylinder 12 is a conical structure, that is, the top of the drying cylinder 12 is larger than the bottom, and the inside is a stepped annular protrusion, thereby prolonging the falling path of the plastic particles and increasing the contact time of the particles and the hot air, when the plastic particles fall to the bottom of the drying cylinder 12, the spiral flow guide plate 26 guides the plastic particles to move downward along the wall of the drying cylinder 12 in a spiral manner, so as to avoid the plastic particles from being blocked at the bottom of the drying cylinder 12.

[0034] It should be noted that the heating ring 31 can adopt a resistance wire heater.

[0035] The above working principle and use effect are as follows: the heating ring 31 is installed in the two heating bins 11 respectively, the air flowing through the heating bin 11 is heated to a set temperature by converting electric energy into heat energy, the high-speed airflow generated by the fan is introduced into the inside of the heating bin 11 through the mounting pipe 8 and the first branch pipe 9, the airflow is heated into hot air after being in contact with the heating ring 31, two independent hot air outputs are formed, the hot air is uniformly sprayed to the surface of the particles through the air injection ports in the inside of the drying cylinder 12, the first nozzle 24 provides a relatively strong upward airflow for the particles in the dispersed area, so as to avoid the particles from being blown away by the high-speed airflow, the second nozzle 25 provides a gentle upward airflow for the area with relatively dense accumulation, so as to enhance the contact probability of the plastic particles and the hot air, delay the falling time of the plastic particles, and prolong the contact time with the hot air, due to the different densities of the plastic particles and the non-metallic false impurity groups, the plastic particles and part of the non-metallic false impurity groups are separated by using the difference in the suspension speed of different substances in the airflow, the lighter non-metallic false impurity groups may move upward along with the airflow, and are finally separated by the negative pressure fan 4, and the heavier plastic particles move downward, so as to realize separation.

[0036] Referring to Figure 1 , Figure 3 and Figure 10In a preferred embodiment, the stirring mechanism is located inside the stirring cylinder 7, the stirring mechanism comprises a fixing frame 30, the bottom outer wall of the stirring cylinder 7 is provided with a discharge port, the fixing frame 30 is fixedly installed on the inner wall of the discharge port, the bottom outer wall of the fixing frame 30 is fixedly connected with a driving motor 29, the output shaft of the driving motor 29 penetrates through the top outer wall of the fixing frame 30, and one end of the stirring rod 28 is fixedly connected with a flow guide cover 27.

[0037] Specifically, the output shaft of the driving motor 29 is directly connected with the stirring rod 28, so that the stirring rod 28 is driven to rotate at a high speed, the rotating stirring rod 28 applies shearing force and centrifugal force to the plastic particles in the stirring cylinder 7 through the blades, so that the agglomerated plastic particles are dispersed into single or small-diameter agglomerates, and the particles accumulated at the bottom are re-disturbed to the flow region in the stirring cylinder 7, thereby avoiding local accumulation. When the flow guide cover 27 rotates with the stirring rod 28, the inclined inner wall of the flow guide cover 27 generates a downward component force on the particles, so as to guide the raised particles to fall back to the discharge port direction. Meanwhile, the outer wall of the flow guide cover 27 reduces the collision and rebound of the plastic particles with the wall of the stirring cylinder 7, thereby avoiding the accumulation of the plastic particles at the upper portion of the stirring cylinder 7. Finally, the uniformly dispersed particles are stably output to the subsequent processing equipment through the discharge port.

[0038] Referring to Figure 1 and Figure 12 In a preferred embodiment, one end of the second branch pipe 10 is fixedly connected with a connecting pipe 5, both ends of the connecting pipe 5 extend into the two fixed grooves, respectively, the top outer wall of the feeding cylinder 1 is hinged with two sealing covers 3, and the inner wall of the feeding cylinder 1 is provided with two limiting strips 32 near the top portion. The second branch pipe 10 is used to split the airflow in the first fan 6, and then the connecting pipe 5 is used to deliver the airflow to the fixed grooves, so as to assist the ion diffusion of the ion wind stick 13, enhance the coverage range and uniformity of the ion release, ensure that the ion wind stick 13 in the feeding cylinder 1 can obtain sufficient airflow support, and avoid the decrease of the electrostatic neutralization efficiency caused by insufficient local airflow.

[0039] The above describes only the preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes to the technical solutions and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An automatic feeding device for plastic granules with a cleaning mechanism, comprising a feeding cylinder (1), a drying cylinder (12), and a mixing cylinder (7), characterized in that, The feeding cylinder (1), the drying cylinder (12), and the stirring cylinder (7) are vertically downward distributed and integrally formed. The feeding cylinder (1) also includes a dust removal mechanism, an anti-clogging component, a drying mechanism, and a stirring mechanism. The dust removal mechanism is located inside the feeding cylinder (1). The dust removal mechanism includes several first electrode rods (15) distributed at equal distances. The inner cavity of the feeding cylinder (1) is a cross-shaped structure. The top ends of several first electrode rods (15) are respectively hinged to the inner walls on both sides and the inner walls on both sides of the feeding cylinder (1). The bottom of the first electrode rod (15) is provided with an insulating protrusion. One end of the insulating protrusion is fixedly connected to a return spring (19). The end of the return spring (19) away from the insulating protrusion is fixedly installed on the inner wall of the feeding cylinder (1). The first electrode rod (15) is inclined downward. The top outer wall of the feeding cylinder (1) is provided with a driving component.

2. The automatic feeding device for plastic granules with a cleaning mechanism according to claim 1, characterized in that, The drive assembly includes a support frame (18) and a chassis (23). The bottom outer wall of the support frame (18) is connected to a mounting column (20) via a bearing. The interior and top outer wall of the chassis (23) are respectively provided with a first motor and several equally spaced stirring blades (17). The output shaft of the first motor is fixedly connected to the bottom outer wall of the mounting column (20).

3. The automatic feeding device for plastic granules with a cleaning mechanism according to claim 2, characterized in that, The anti-blocking component is located on both sides of the mounting post (20). The anti-blocking component includes two electric push rods (21). The fixed end of the electric push rod (21) is fixedly installed inside the mounting post (20). The movable end of the electric push rod (21) is fixedly connected to several equally spaced second electrode rods (22).

4. The automatic feeding device for plastic granules with a cleaning mechanism according to claim 2, characterized in that, A discharge port is formed between the chassis (23) and the bottom inner wall of the feeding cylinder (1).

5. The automatic feeding device for plastic granules with a cleaning mechanism according to claim 4, characterized in that, The outer circumferential wall of the feeding cylinder (1) is provided with several uniformly distributed dust suction ports (16). The inner wall of the dust suction port (16) is provided with a filter screen. The dust suction port (16) corresponds to the position of the first electrode rod (15). The outer wall of the feeding cylinder (1) is fixedly connected with a collection cover (2) by bolts. The outer wall of the collection cover (2) is provided with four equally distributed negative pressure fans (4). The exhaust port of the negative pressure fan (4) extends into the interior of the collection cover (2). The corners of the inner cavity are all designed with rounded corners.

6. The automatic feeding device for plastic granules with a cleaning mechanism according to claim 1, characterized in that, An installation port is provided at the corner of the inner cavity. A dustproof net (14) is provided on the inner wall of the installation port. Four equally spaced fixing grooves are provided on the top outer wall of the feeding cylinder (1). The fixing grooves are connected to the installation port. An ion wind bar (13) is installed on the inner wall of the fixing groove.

7. The automatic feeding device for plastic granules with a cleaning mechanism according to claim 1, characterized in that, The drying mechanism is located inside the drying cylinder (12). The drying mechanism includes two heating chambers (11) and two symmetrically distributed fixed supports. The heating chamber (11) is provided with a heating ring (31). A first fan (6) is installed on the fixed support. An installation pipe (8) and a filter element are fixedly connected to the air outlet of the first fan (6). A first branch pipe (9) and a second branch pipe (10) are provided on the outer wall of the installation pipe (8). One end of the installation pipe (8) and one end of the first branch pipe (9) extend into the interior of the two heating chambers (11). Fifty air jets are opened inside the drying cylinder (12). A first nozzle (24) is installed on the inner wall of twenty of the air jets, and a second nozzle (25) is installed on the inner wall of the other thirty air jets. The first nozzle (24) and the second nozzle (25) are both inclined upwards.

8. The automatic feeding device for plastic granules with a cleaning mechanism according to claim 7, characterized in that, The drying cylinder (12) has two stepped annular protrusions inside. The drying cylinder (12) has a conical structure. The inner wall of the drying cylinder (12) is provided with two sets of flow guiding components near the bottom. The flow guiding components include ten flow guiding plates (26). The flow guiding plates (26) have a spiral structure and are inclined downward.

9. The automatic feeding device for plastic granules with a cleaning mechanism according to claim 1, characterized in that, The stirring mechanism is located inside the stirring drum (7). The stirring mechanism includes a fixed frame (30). The bottom outer wall of the stirring drum (7) is provided with a discharge port. The fixed frame (30) is fixedly installed on the inner wall of the discharge port. The bottom outer wall of the fixed frame (30) is fixedly connected to a drive motor (29). The output shaft of the drive motor (29) passes through the top outer wall of the fixed frame (30). The output shaft of the drive motor (29) is fixedly connected to a stirring rod (28). One end of the stirring rod (28) is fixedly connected to a guide shroud (27).

10. An automatic feeding device for plastic granules with a cleaning mechanism according to claim 7, characterized in that, One end of the second branch pipe (10) is fixedly connected to a connecting pipe (5), and the two ends of the connecting pipe (5) extend into the interior of the two fixed grooves respectively. The top outer wall of the feeding cylinder (1) is hinged with two sealing caps (3), and the inner wall of the feeding cylinder (1) is provided with two limiting strips (32) near the top.

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