An easy-to-clean plastic dryer
By using a servo motor-driven drying mesh box and a gear rack design, combined with an innovative structure of brush strips and unloading gate, the problems of uneven drying and difficult cleaning in plastic dryers are solved, achieving a highly efficient and convenient drying and cleaning process for plastic granules.
Patent Information
- Application Number
- CN202521523441.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-17
- Estimated Expiration
- 2035-07-21
AI Technical Summary
Existing plastic dryers suffer from uneven drying and cleaning difficulties. In particular, the particles at the bottom of the hopper are compressed and compacted, hindering moisture diffusion and making them prone to breakage during cleaning. Traditional manual cleaning is inefficient.
The drying basket driven by a servo motor moves back and forth through a gear and rack design, combined with brush cleaning to ensure that hot air penetrates evenly and removes particles from the wall simultaneously. The drying mechanism creates turbulent heating, and the bottom discharge door design facilitates particle discharge and avoids losses from manual cleaning.
It achieves uniform drying and easy cleaning of plastic granules, avoiding the problems of uneven hot air in traditional dryers and particle breakage caused by manual cleaning, thus improving drying efficiency and cleaning convenience.
Smart Images
Figure CN224510142U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of plastic processing, and specifically to an easy-to-clean plastic dryer. Background Technology
[0002] Plastic particles are the main raw material for manufacturing plastic products. Plastic particles easily absorb moisture and form lumps. Plastic products made from damp plastic particles will have significantly reduced quality and will also damage the injection molding machine. Therefore, plastic particles need to be dried through a drying process before entering the injection molding machine to remove the moisture they contain.
[0003] Ordinary dryers use the principle of heat circulation to dry plastic particles. The storage bin is usually placed statically inside the outer shell. Hot air passes through the gaps in the material pile first. The surface particles dehydrate too quickly, while the particles at the bottom of the bin are compacted due to pressure and reduced airflow, which hinders moisture diffusion. In addition, the mesh box is usually set inside the drying shell, making it difficult to clean the particle dust inside the shell. Utility Model Content
[0004] The purpose of this invention is to provide an easy-to-clean plastic dryer to solve the above-mentioned defects caused by the prior art.
[0005] An easy-to-clean plastic dryer includes a shell, a servo motor, a drying mesh box, and a straight toothed rack. Doors are hinged to both sides of the shell. An air inlet mesh plate and a one-way exhaust valve are connected through one side of the shell. A shaking mechanism is installed inside the shell to reciprocate the drying mesh box within the shell, causing the particles inside the drying mesh box to shake, thereby increasing the contact area between the particles and the hot air. A drying mechanism is installed at the top of the drying mesh box. This drying mechanism filters the air drawn in from the outside using the air inlet mesh plate and then heats the air using an electric heating plate. The displacement of the drying mesh box disturbs the airflow, creating turbulence in the drying hot air.
[0006] Preferably, the shaking mechanism includes a servo motor, a drying mesh box, a guide rail, pulleys, brush strips, and straight toothed racks. Multiple sets of pulleys are symmetrically arranged at the bottom of the drying mesh box. The drying mesh box is located inside the outer shell. A straight toothed rack is welded to the top of the drying mesh box. A brush strip is connected to the bottom of the drying mesh box. The bottom of the brush strip is attached to the bottom of the inner shell. The guide rail is symmetrically arranged at the inner end of the outer shell.
[0007] Preferably, the drying mesh box is connected to the outer side of the guide rail by a pulley at its bottom, and the length of the drying mesh box is less than the length of the outer shell.
[0008] Preferably, the drying mesh box engages with the outer side of a gear via a straight toothed rack at its top.
[0009] Preferably, the drying mechanism includes an electric heating plate, gears, fan blades, a drive shaft, and a discharge door. The electric heating plate is installed inside the top of the outer shell. A fan blade is provided on one side of the electric heating plate. The fan blade is installed on the outside of the drive shaft. The top of the drive shaft is connected to the output end of a servo motor via a coupling. The discharge door is symmetrically arranged at the bottom of the drying mesh box. A gear is keyed to the bottom of the drive shaft.
[0010] Preferably, the drive shaft is connected to a gear via a bottom key, which meshes with the outer side of a spur rack.
[0011] Compared with the prior art, the present invention has the following advantages:
[0012] 1. The design of the rack and pinion drive for the reciprocating movement of the storage mesh box breaks the electrostatic adsorption between particles, preventing hygroscopic materials from softening and sticking together after heating for a period of time. The reciprocating motion keeps the particles turning, eliminating the low temperature zone in the center of the static material box, ensuring that hot air penetrates all parts of the material layer, and improving the uniformity of drying. The bottom of the drying mesh box is suspended and supported by symmetrically set guide rails inside, so that hot air can dry the bottom of the drying mesh box.
[0013] 2. The brush strips move with the mesh box and can simultaneously remove the particles and debris attached to the inner wall of the drying chamber, avoiding material loss caused by manual cleaning during traditional shutdowns. By opening the door on one side, dust or particles can be directly discharged into the shell. The discharge door at the bottom of the drying mesh box moves out as a whole, avoiding particle breakage caused by traditional manual material removal. The discharge door is equipped with a sealing ring to effectively prevent external dust from entering. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0015] Figure 2 This is a schematic diagram of the internal structure of the outer shell in this utility model.
[0016] Figure 3 This is a schematic diagram of the swaying mechanism in this utility model.
[0017] Figure 4 This is a schematic diagram of the drying mechanism itself in this utility model.
[0018] Figure 5 This is a top view of the drying mesh box in this utility model.
[0019] in:
[0020] 1. Outer shell; 2. Door; 3. Air inlet grille; 4. Servo motor; 5. Shaking mechanism; 6. Drying mesh box; 7. Guide rail; 8. Pulley; 9. Brush strip; 10. Straight toothed rack; 11. Drying mechanism; 12. Electric heating plate; 13. One-way exhaust valve; 14. Gear; 15. Fan blade; 16. Drive shaft; 17. Unloading door. Detailed Implementation
[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0022] like Figures 1 to 5 As shown, an easy-to-clean plastic dryer includes a shell 1, a servo motor 4, a drying mesh box 6, and a straight toothed rack 10. Both sides of the shell 1 are hinged to doors 2. An air inlet mesh plate 3 is connected through one side of the shell 1, and a one-way exhaust valve 13 is also connected through one side of the shell 1. A shaking mechanism 5 is installed inside the shell 1, which reciprocates the drying mesh box 6 within the shell 1, causing the particles inside the drying mesh box 6 to shake, thereby increasing the contact area between the particles and the hot air. A drying mechanism 11 is installed at the top of the drying mesh box 6. The drying mechanism 11 filters the air drawn in from the outside using the air inlet mesh plate 3, and then heats the air using an electric heating plate 12. The shifting of the drying mesh box 6 disturbs the airflow, creating turbulence in the drying hot air.
[0023] In this embodiment, the shaking mechanism 5 includes a servo motor 4, a drying mesh box 6, a guide rail 7, pulleys 8, brush strips 9, and straight toothed racks 10. Multiple sets of pulleys 8 are symmetrically arranged at the bottom of the drying mesh box 6. The drying mesh box 6 is located inside the outer shell 1. Straight toothed racks 10 are welded to the top of the drying mesh box 6. Brush strips 9 are connected to the bottom of the drying mesh box 6, and the bottom of the brush strips 9 is attached to the bottom of the inner surface of the outer shell 1. The guide rail 7 is symmetrically arranged at the inner end of the outer shell 1. The brush strips 9 at the bottom of the drying mesh box 6 clean the inner surface of the outer shell 1, thereby reducing the amount of particles and dust inside the outer shell 1.
[0024] In this embodiment, the drying mesh box 6 is connected to the outer side of the guide rail 7 by a pulley 8 at its bottom. The length of the drying mesh box 6 is less than the length of the outer shell 1. The bottom of the drying mesh box 6 is guided by the symmetrically arranged guide rail 7, thereby preventing the drying mesh box 6 from shaking during displacement.
[0025] In this embodiment, the drying mesh box 6 engages with the outer side of the gear 14 via a straight toothed rack 10 at its top. The straight toothed rack 10 engages with another straight toothed rack 10, and the drying mesh box 6 reciprocates, thereby improving the uniformity of particle drying.
[0026] In this embodiment, the drying mechanism 11 includes an electric heating plate 12, a gear 14, a fan blade 15, a drive shaft 16, and a discharge gate 17. The electric heating plate 12 is installed inside the top of the outer casing 1. A fan blade 15 is provided on one side of the electric heating plate 12. The fan blade 15 is installed on the outside of the drive shaft 16. The top of the drive shaft 16 is connected to the output end of the servo motor 4 through a coupling. The discharge gate 17 is symmetrically arranged at the bottom of the drying mesh box 6. The bottom end of the drive shaft 16 is keyed to the gear 14. The fan blade 15 is used to circulate the heated air, and the discharge gate 17 at the bottom of the drying mesh box 6 is used to discharge the particles from the bottom.
[0027] In this embodiment, the drive shaft 16 is connected to a gear 14 via a key at its bottom end, which meshes with the outer side of the straight toothed rack 10. By controlling the rotation direction of the gear 14, the displacement direction of the straight toothed rack 10 is adjusted, and the particles are dried by the reciprocating drying mesh box 6.
[0028] In practical applications, this easy-to-clean plastic dryer includes the following tasks:
[0029] Step 1: Before drying the material, the operator first opens the box door 2 on one side of the outer shell 1, uses the servo motor 4 to drive the drive shaft 16 to rotate, uses the drive shaft 16 to drive the gear 14 to rotate, uses the gear 14 to mesh with the straight toothed rack 10 on one side, so that the straight toothed rack 10 drives the drying mesh box 6 to move a part of it out of the interior of the outer shell 1, then puts the material into the drying mesh box 6, and then uses the straight toothed rack 10 to put the drying mesh box 6 back into the interior of the outer shell 1, and then closes the box door 2;
[0030] Step 2: The operator turns on the electric heating plate 12 to heat the inside of the outer shell 1. At the same time, the servo motor 4 drives the drive shaft 16 to rotate, which in turn drives the gear 14 to rotate. The drive shaft 16 also drives the fan blades 15 to rotate, drawing in outside air from the outer shell 1. The air is then filtered by the air intake mesh plate 3 before entering the interior of the outer shell 1, where the electric heating plate 12 heats the air.
[0031] Step 3: When gear 14 rotates clockwise or counterclockwise through drive shaft 16, gear 14 meshes with the tooth grooves of straight tooth rack 10 one tooth at a time. The rotational motion of gear 14 drives the drying mesh box 6 to move through the relative sliding between the teeth and straight tooth rack 10. The rotation direction of gear 14 determines the moving direction of straight tooth rack 10 and drying mesh box 6. When gear 14 rotates clockwise, straight tooth rack 10 moves straight to the right, causing the particles to shake during the movement, so that the hot air dries them evenly.
[0032] Step 4: When the drying mesh box 6 moves on the outside of the guide rail 7 via the pulley 8 at the bottom, and is guided by the guide rails 7 on both sides, when the pressure of the hot and humid air rises to the threshold, the valve disc of the drying chamber of the one-way exhaust valve 13 is pushed by the air pressure to overcome the spring resistance and open, and the hot and humid air is discharged at high speed. After the pressure drops, the spring automatically resets and seals, preventing the backflow of external air. After the drying of the particles is completed, the box door 2 is opened, and then the discharge door 17 at the bottom of the drying mesh box 6 is opened, so that the material at the bottom of the drying mesh box 6 is continuously discharged.
[0033] Therefore, the above-disclosed embodiments are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.
Claims
1. A cleanable plastic dryer characterized by: The device includes a housing (1), a servo motor (4), a drying mesh box (6), and a straight toothed rack (10). Both sides of the housing (1) are hinged to doors (2). An air inlet mesh plate (3) is connected through one side of the housing (1). A one-way exhaust valve (13) is connected through one side of the housing (1). A shaking mechanism (5) is provided inside the housing (1). The shaking mechanism (5) moves the drying mesh box (6) back and forth inside the housing (1), causing the particles inside the drying mesh box (6) to shake, thereby increasing the contact area between the particles and the hot air. A drying mechanism (11) is provided at the top of the drying mesh box (6). The drying mechanism (11) filters the air drawn in from the outside through the air inlet mesh plate (3) and then heats the air through the electric heating plate (12). The shifting of the drying mesh box (6) disturbs the airflow, causing the drying hot air to form turbulence.
2. A self-cleaning plastic dryer as claimed in claim 1, wherein: The shaking mechanism (5) includes a servo motor (4), a drying mesh box (6), a guide rail (7), pulleys (8), brush strips (9), and straight toothed racks (10). Multiple sets of pulleys (8) are symmetrically arranged at the bottom of the drying mesh box (6). The drying mesh box (6) is located inside the outer shell (1). A straight toothed rack (10) is welded to the top of the drying mesh box (6). A brush strip (9) is connected to the bottom of the drying mesh box (6). The bottom of the brush strip (9) is attached to the bottom of the inner part of the outer shell (1). The guide rail (7) is symmetrically arranged at the inner end of the outer shell (1).
3. A self-cleaning plastic dryer as claimed in claim 2, wherein: The drying mesh box (6) is connected to the outside of the guide rail (7) by a pulley (8) at the bottom end, and the length of the drying mesh box (6) is less than the length of the outer shell (1).
4. A self-cleaning plastic dryer as claimed in claim 2, wherein: The drying mesh box (6) meshes with the outer side of the gear (14) through the straight toothed rack (10) set at the top.
5. A plastic dryer as claimed in claim 1, wherein: The drying mechanism (11) includes an electric heating plate (12), a gear (14), a fan blade (15), a drive shaft (16), and a discharge door (17). The electric heating plate (12) is installed inside the top of the outer shell (1). A fan blade (15) is provided on one side of the electric heating plate (12). The fan blade (15) is installed on the outside of the drive shaft (16). The top of the drive shaft (16) is connected to the output end of the servo motor (4) through a coupling. The discharge door (17) is symmetrically arranged at the bottom of the drying mesh box (6). The bottom of the drive shaft (16) is keyed to the gear (14).
6. A self-cleaning plastic dryer as claimed in claim 5, wherein: The drive shaft (16) is connected to a gear (14) via a key at its bottom end, which meshes with the outer side of a straight toothed rack (10).