Modified plastic particle drying machine

Abstract

The utility model discloses a modified plastic particle dryer, which relates to the technical field of plastic product production, and comprises a hot air control device and a drying cylinder, the hot air control device and the drying cylinder are connected and matched for use through an air inlet connecting flange, the top of the drying cylinder is provided with a driving piece, and the inner side of the drying cylinder is provided with a pouring assembly. The pouring assembly comprises a material distributing barrel arranged on the inner side of the drying barrel, a scraper blade is arranged on the material distributing barrel, a spiral feeding roller and material distributing fan blades are arranged at the bottom of the drying barrel, the rotating directions of the material distributing fan blades and the material distributing barrel arranged in the pouring assembly are opposite, the plastic particles can be poured out, and through the design, the distance between the plastic particles can be increased; and meanwhile, the contact area between the plastic particles and hot air is increased, and the drying efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic product manufacturing technology, and in particular to a modified plastic granule dryer. Background Technology

[0002] The production of plastic products mainly includes three stages: raw material processing, molding, and post-processing. First, recycled or newly purchased plastic raw materials are cleaned to remove impurities, oil, and label residue, ensuring the material is clean. After cleaning, they need to be dried to prevent moisture from affecting melt quality and finished product performance. Hot air circulation or centrifugal dehydration equipment can be used. After drying, the plastic is crushed, proportioned, and then enters the molding stage, where it is molded into the desired shape through processes such as injection molding, extrusion, or blow molding. Molded products need to be cleaned again to remove mold release agents or residues. Finally, they undergo quality inspection, packaging, and warehousing.

[0003] A search revealed a Chinese utility model patent with patent number CN219902905U, which discloses a plastic granule raw material dryer. Compared with existing technologies, this utility model patent with Chinese patent number CN219902905U achieves uniform drying by: using a heating element to generate heat to heat the air inside the drying chamber; then using the rotation of a first motor to drive a stirring rod to stir the plastic granule raw material inside the drying chamber; by fixing a filter plate on the inner wall of the drying chamber to separate moisture from the plastic granules, preventing moisture from accumulating at the bottom of the device and affecting the drying speed of the plastic granules at the bottom; and finally using a second motor to drive the fan blades to rotate, thereby accelerating the drying speed.

[0004] However, in actual use, the stirring rod and the drying chamber are not in close contact, but rather there is a gap. These gaps form a stirring blind zone. Since the stirring direction of the stirring shaft is fixed, the plastic particles cannot be effectively stirred in the blind zone, causing them to accumulate at the bottom of the drying chamber. At the same time, static electricity is generated when the plastic particles roll and come into contact with each other. This static electricity causes the plastic particles to attract each other, further aggravating the accumulation at the bottom of the drying chamber. Moreover, static electricity may change the surface properties of the plastic particles, affecting the evaporation of moisture and hindering the smooth progress of the drying process. It may even lead to a decrease in the quality of the dried plastic particles. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as blind spots in stirring and difficulty in drying due to particle accumulation, and to propose a modified plastic particle dryer.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A modified plastic granule dryer includes a hot air control device and a drying cylinder. The hot air control device and the drying cylinder are connected and used together via an air inlet flange. A drive unit is installed on the top of the drying cylinder, and a pouring assembly is provided on the inner side of the drying cylinder. The drive unit is used to drive the pouring assembly to work. The pouring assembly includes a distribution cylinder provided on the inner side of the drying cylinder, a scraper provided on the distribution cylinder, a spiral feeding roller and a distribution fan blade provided at the bottom of the drying cylinder. The pouring assembly is used to reduce the accumulation of plastic during the drying process.

[0008] The above technical solution further includes:

[0009] The bottom of the drying cylinder is fixedly connected to a discharge flange interface, and an air inlet pipe is fixedly connected between the drying cylinder and the air inlet connection flange. The top of the drying cylinder is provided with a feed port.

[0010] The pouring assembly further includes: a driving bevel gear fixedly connected to the output end of the driving member; a second transmission shaft rotatably connected to the inner side of the drying cylinder; a first transmission shaft rotatably connected to the inner side of the second transmission shaft; a second driven bevel gear fixedly connected to the end of the second transmission shaft near the driving member; and a first driven bevel gear fixedly connected to the end of the first transmission shaft near the driving member. The first driven bevel gear and the second driven bevel gear mesh with the driving bevel gear.

[0011] A rotating ring is rotatably connected to the inner side of the drying cylinder. The rotating ring is fixedly connected to the distributing cylinder. The distributing cylinder is fixedly connected to the first drive shaft. The outer side of the second drive shaft is fixedly connected to the scraper. The scraper and the top of the distributing cylinder slide relative to each other.

[0012] The portion of the second drive shaft located inside the material distribution cylinder is equipped with material distribution fan blades. Multiple auxiliary rods are fixedly connected to the material distribution fan blades, and a reinforcing ring is fixedly connected to all of the multiple auxiliary rods.

[0013] A sluice plate is fixedly connected to the inner side of the drying cylinder, and the sluice plate is located at the bottom of the distributing cylinder. An installation ring is fixedly connected to the outer side of the first drive shaft.

[0014] Multiple mounting bolts are fixedly connected to the outer side of the mounting ring. A mounting plate is mounted on the outer side of the mounting bolts. A cleaning plate is fixedly connected to the bottom of the mounting plate. The cleaning plate is in contact with the drain plate. Multiple mounting bolts are threadedly connected between the mounting plate and the cleaning plate.

[0015] The spiral feed roller is mounted on the first drive shaft, and the spiral feed roller is located inside the discharge flange interface and is in close contact with the inner wall of the discharge flange interface.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, the distributing fan blades and the distributing cylinder in the dispensing component rotate in opposite directions, which can dispense plastic particles. This design can increase the spacing between plastic particles, reduce electrostatic adsorption, and at the same time increase the contact area between plastic particles and hot air, thereby improving drying efficiency.

[0018] 2. In this utility model, the drip plate in the pouring assembly blocks the plastic when it can fall, thereby increasing the residence time of the plastic particles in the drying cylinder and improving the drying effect. The cleaning plate can prevent the accumulation of plastic particles on the drip plate, and the spiral feeding roller is used to achieve uniform discharge. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a modified plastic granule dryer proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the drying cylinder in this utility model;

[0021] Figure 3 This is a schematic diagram of the pouring component structure in this utility model;

[0022] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0023] In the diagram: 1. Hot air control equipment; 2. Air inlet pipe; 3. Discharge flange interface; 4. Drying cylinder; 5. Air inlet connection flange; 6. Driving component; 7. First driven bevel gear; 8. Second driven bevel gear; 9. Driving bevel gear; 10. Feed inlet; 11. First drive shaft; 12. Second drive shaft; 13. Distributor cylinder; 14. Rotating ring; 15. Scraper; 16. Cleaning plate; 17. Spiral feed roller; 18. Distributor fan blade; 19. Auxiliary rod; 20. Reinforcing ring; 21. Mounting ring; 22. Mounting plate; 23. Cleaning plate; 24. Mounting bolt; 25. Squeegee. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] like Figures 1-4As shown, the present invention proposes a modified plastic granule dryer, including a hot air control device 1 and a drying cylinder 4. The hot air control device 1 and the drying cylinder 4 are connected and used together by an air inlet connecting flange 5. A driving component 6 is installed on the top of the drying cylinder 4, and a pouring assembly is provided on the inner side of the drying cylinder 4. The driving component 6 is used to drive the pouring assembly to work. The pouring assembly includes a distribution cylinder 13 provided on the inner side of the drying cylinder 4, a scraper 15 provided on the distribution cylinder 13, a spiral feeding roller 17 and a distribution fan blade 18 provided at the bottom of the drying cylinder 4. The pouring assembly is used to reduce the accumulation of plastic during the drying process.

[0027] During use, the scraper 15 rotates in the opposite direction to the distribution cylinder 13. Its arc-shaped edge structure periodically scrapes the accumulated layer on the inner wall of the drying cylinder, causing the attached plastic particles to fall off and enter the distribution cylinder 13. The distribution cylinder 13 generates centrifugal force during rotation, which, together with the reverse movement of the distribution fan blades 18, stirs the plastic particles and throws them toward the inner wall of the drying cylinder 4, thereby increasing the spacing between the plastic particles and reducing the adsorption between them due to static electricity.

[0028] The bottom of the drying cylinder 4 is fixedly connected to the discharge flange interface 3. The drying cylinder 4 and the air inlet connection flange 5 are fixedly connected to the air inlet pipe 2. The top of the drying cylinder 4 is provided with the feed port 10.

[0029] The discharge flange interface 3 is used to install other external equipment, such as screw conveyors. The hot air blown out by the hot air control device 1 enters the drying cylinder 4 through the air inlet connection flange 5, generating an upward force that comes into contact with the thrown plastic particles for drying.

[0030] The pouring assembly also includes: a driving bevel gear 9 fixedly connected to the output end of the driving member 6; a second drive shaft 12 rotatably connected to the inner side of the drying cylinder 4; a first drive shaft 11 rotatably connected to the inner side of the second drive shaft 12; a second driven bevel gear 8 fixedly connected to one end of the second drive shaft 12 near the driving member 6; a first driven bevel gear 7 fixedly connected to one end of the first drive shaft 11 near the driving member 6; and the first driven bevel gear 7 and the second driven bevel gear 8 meshing with the driving bevel gear 9.

[0031] During use, the drive unit 6 is a gear reduction motor. When the drive unit 6 is started, the drive unit 6 drives the active bevel gear 9 to rotate. The active bevel gear 9 forms a double mesh with the first driven bevel gear 7 and the second driven bevel gear 8, and distributes the power to the first transmission shaft 11 and the second transmission shaft 12.

[0032] A rotating ring 14 is rotatably connected to the inner side of the drying cylinder 4. The rotating ring 14 is fixedly connected to the distributing cylinder 13. The distributing cylinder 13 is fixedly connected to the first drive shaft 11. The outer side of the second drive shaft 12 is fixedly connected to the scraper 15. The scraper 15 and the top of the distributing cylinder 13 slide relative to each other.

[0033] The second drive shaft 12 is located inside the material distribution cylinder 13 and is equipped with a material distribution fan blade 18. Multiple auxiliary rods 19 are fixedly connected to the material distribution fan blade 18, and a reinforcing ring 20 is fixedly connected to the multiple auxiliary rods 19.

[0034] The first drive shaft 11 drives the distribution cylinder 13 to rotate, generating centrifugal force. Simultaneously, the second drive shaft 12 drives the distribution fan blades 18 to rotate. At this time, the rotation directions of the distribution cylinder 13 and the distribution fan blades 18 are opposite. The mixing action of the distribution fan blades 18 further disperses the material within the distribution cylinder 13. The auxiliary rod 19 and the reinforcing ring 20 enhance the structural strength of the distribution fan blades 18. The scraper 15 rotates in the same direction as the distribution fan blades 18. The scraper 15 is used to remove plastic particles adhering to the top of the distribution cylinder 13 and allow them to enter the distribution cylinder 13, ensuring the stable operation of the distribution process.

[0035] A strainer 25 is fixedly connected to the inner side of the drying cylinder 4. The strainer 25 is located at the bottom of the distributing cylinder 13. An installation ring 21 is fixedly connected to the outer side of the first drive shaft 11.

[0036] The purpose of the squeegee 25 is to increase the residence time of plastic granules inside the dispensing cylinder 13 and improve the drying effect. The mounting ring 21 is used to install the cleaning plate 23.

[0037] Multiple mounting bolts 24 are fixedly connected to the outer side of the mounting ring 21. A mounting plate 22 is mounted on the outer side of the mounting bolts 24. A cleaning plate 23 is fixedly connected to the bottom of the mounting plate 22. The cleaning plate 23 and the drain plate 25 are in contact with each other. Multiple mounting bolts 24 are threadedly connected between the mounting plate 22 and the cleaning plate 16.

[0038] The screw feeder 17 is mounted on the first drive shaft 11, and the screw feeder 17 is located inside the discharge flange interface 3 and is in contact with the inner wall of the discharge flange interface 3.

[0039] When the equipment is running, the cleaning plate 23 and the sluice plate 25 come into contact with each other and rotate synchronously under the drive of the first drive shaft 11 by the mounting ring 21. The purpose of the cleaning plate 23 is to remove plastic particles on the sluice plate 25 and prevent the plastic particles from clogging the sluice plate 25. The mounting bolts 24 are used to fix the mounting plate 22 and the cleaning plate 23 to ensure that the cleaning plate 23 maintains a stable position and posture during the cleaning process. The spiral feed roller 17 is located inside the discharge flange interface 3 and is in close contact with the inner wall of the discharge flange interface 3. The spiral feed roller 17 makes the material gradually pushed towards the discharge port during the rotation process, so as to achieve continuous and uniform feeding.

[0040] In this embodiment, plastic granules are first poured into the distributing cylinder 13 through the feed inlet 10. At this time, the drive unit 6 is activated, and hot air from the hot air control device 1 enters the drying cylinder 4. The drive unit 6 drives the active bevel gear 9 to rotate, and the first driven bevel gear 7 and the second driven bevel gear 8 mesh with it, causing the first drive shaft 11 and the second drive shaft 12 to rotate. The first drive shaft 11 drives the distributing cylinder 13 to rotate, generating centrifugal force. The second drive shaft 12 drives the scraper 15 and the distributing fan blade 18 to rotate. The scraper 15 scrapes the raw material that remained at the top of the distributing cylinder 13 when the plastic granules were poured in, causing the attached granules to fall into the distributing cylinder 13. The distributing fan blade 18 rotates in the opposite direction to stir and throw out the granules, increasing the particle spacing and reducing electrostatic adsorption. The hot air control device 1 blows hot air into the drying cylinder 4 to dry the granules. At the same time, the spiral feed roller 17 on the first drive shaft 11 pushes the material towards the discharge flange interface 3 to achieve feeding. The mounting ring 21 drives the cleaning plate 23 to rotate, removing granules from the strainer plate 25 to prevent blockage and ensure the normal operation of the dryer.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modified plastic particle dryer comprising a hot air control device (1) and a drying cylinder (4), characterized in that, The hot air control equipment (1) and the drying cylinder (4) are connected and matched by the air inlet connecting flange (5), the top of the drying cylinder (4) is provided with a driving member (6), the inner side of the drying cylinder (4) is provided with a sprinkling assembly, the driving member (6) is used for driving the sprinkling assembly to work, the sprinkling assembly comprises a distributing cylinder (13) arranged on the inner side of the drying cylinder (4), the distributing cylinder (13) is provided with a scraper (15), the bottom of the drying cylinder (4) is provided with a spiral feeding roller (17) and a distributing fan blade (18), and the sprinkling assembly is used for reducing the accumulation of plastics during the drying process.

2. A modified plastic particle dryer according to claim 1, characterized in that The bottom of the drying cylinder (4) is provided with a discharge flange interface (3) fixedly connected, the drying cylinder (4) and the air inlet connecting flange (5) are jointly and fixedly connected with the air inlet pipe (2), and the top of the drying cylinder (4) is provided with a feeding port (10).

3. The modified plastic pellet dryer of claim 1, wherein, The output end of the driving member (6) is fixedly connected with a driving bevel gear (9), the inner side of the drying cylinder (4) is rotatably connected with a second transmission shaft (12), the inner side of the second transmission shaft (12) is rotatably connected with a first transmission shaft (11), one end of the second transmission shaft (12) close to the driving member (6) is fixedly connected with a second driven bevel gear (8), one end of the first transmission shaft (11) close to the driving member (6) is fixedly connected with a first driven bevel gear (7), and the first driven bevel gear (7) and the second driven bevel gear (8) are meshed with each other and the driving bevel gear (9).

4. A modified plastic pellet dryer according to claim 3, wherein The inner side of the drying cylinder (4) is rotatably connected with a rotating ring (14), the rotating ring (14) is fixedly connected between the distributing cylinder (13) and the first transmission shaft (11), the second transmission shaft (12) is fixedly connected between the outer side and the scraper (15), and the scraper (15) and the top of the distributing cylinder (13) slide relative to each other.

5. A modified plastic pellet dryer according to claim 4, wherein The part of the second transmission shaft (12) located on the inner side of the distributing cylinder (13) is provided with the distributing fan blade (18), a plurality of auxiliary rods (19) are fixedly connected to the distributing fan blade (18), and the plurality of auxiliary rods (19) are jointly and fixedly connected with a reinforcing ring (20).

6. A modified plastic pellet dryer according to claim 5, wherein The inner side of the drying cylinder (4) is fixedly connected with a leakage plate (25), the leakage plate (25) is located at the bottom of the distributing cylinder (13), and the outer side of the first transmission shaft (11) is fixedly connected with a mounting ring (21).

7. A modified plastic pellet dryer according to claim 6, wherein The outer side of the mounting ring (21) is fixedly connected with a plurality of mounting bolts (24), the outer side of the mounting bolt (24) is provided with a mounting plate (22), the bottom of the mounting plate (22) is fixedly connected with a cleaning plate (23), the cleaning plate (23) and the leakage plate (25) are in contact with each other, and the mounting plate (22) and the cleaning plate (16) are jointly and threadedly connected with a plurality of mounting bolts (24).

8. The modified plastic pellet dryer of claim 1, wherein, The spiral feeding roller (17) is mounted on the first transmission shaft (11), and the spiral feeding roller (17) is located on the inner side of the discharge flange interface (3) and is in close contact with the inner wall of the discharge flange interface (3).

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