A plastic pelletizer drying device

Abstract

The utility model relates to drying technical field, concretely relates to a kind of plastic granulator drying device, including drying cabinet, first conveying belt and second conveying belt are equipped in drying cabinet, second conveying belt is located below first conveying belt, and the end of first conveying belt and second conveying belt away from each other respectively extends to the outside of drying cabinet, and driving assembly that first conveying belt and second conveying belt are moved respectively is equipped on drying cabinet;First heating plate is fixedly connected in several drying cabinet inside, located above second conveying belt, support shell is equipped in drying cabinet, located below first conveying belt;Ensure that the plastic particles that just enter on first conveying belt are not polluted by wet first conveying belt again, to significantly improve drying efficiency, reduce energy consumption, by timely wiping moisture on first conveying belt, the relative dryness of first conveying belt is maintained, effectively prevent the mildew of first conveying belt, prolong service life.

Description

Technical Field

[0001] This utility model relates to the field of drying technology, and in particular to a drying device for a plastic pelletizer. Background Technology

[0002] A plastic pelletizer is a type of plastic extrusion molding equipment. Its principle is to heat the plastic raw material to make it into a viscous flow state, and then continuously extrude it through the extrusion die under pressure. After cooling, it becomes a strip-shaped glassy state, and then the pelletizing mechanism obtains cylindrical or elliptical plastic pellets. Usually, plastic pelletizers use water cooling and hot air drying to remove the moisture from the plastic pellets.

[0003] However, it is worth considering that when the conveyor belt transports wet plastic granules into the drying chamber, the plastic granules will drip or stick the moisture they carry onto the conveyor belt. When the conveyor belt returns to the starting point to pick up new wet material, the undried moisture on its surface will re-contaminate the already partially dried plastic granules, affecting the drying efficiency and the dryness of the final product.

[0004] Therefore, in order to solve the above problems, a more suitable facility that meets the needs of users is needed. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a drying device for a plastic pelletizer, so as to solve the problem that when the conveyor belt returns to the starting point to receive new wet material, the undried moisture on its surface will re-contaminate the already partially dried plastic pellets.

[0006] To achieve the above objectives, this utility model provides a drying device for a plastic pelletizer, including a drying box. The drying box is provided with a first conveyor belt and a second conveyor belt. The second conveyor belt is located below the first conveyor belt, and the ends of the first and second conveyor belts that are far apart extend to the outside of the drying box. The drying box is provided with driving components that drive the first and second conveyor belts to move respectively.

[0007] The drying chamber is fixedly connected with several first heating plates located above the second conveyor belt. The drying chamber is provided with a support shell located below the first conveyor belt. A rotating shaft is rotatably connected through the support shell. Wiping units are provided at both ends of the rotating shaft. The drying chamber is provided with an adjusting component for adjusting the position of the support shell. A rotator for driving the rotating shaft is installed on the support shell. A second heating plate that cooperates with the wiping unit is fixedly connected inside the drying chamber.

[0008] Preferably, the wiping unit includes movable columns respectively disposed above and below the support shell. Several wiping rollers for wiping the bottom of the first conveyor belt are rotatably connected to the movable columns. The movable columns have grooves. The two ends of the rotating shaft are respectively located in the two grooves. The ends of the rotating shaft are connected to the inner wall of the grooves by compression springs. The inner wall of the grooves has guide holes. Guide blocks are slidably disposed in the guide holes, and the guide blocks are fixedly connected to the rotating shaft.

[0009] Preferably, the rotator includes a first bevel gear fixedly sleeved outside the rotating shaft, and the first bevel gear is located inside the support shell. A first servo motor is fixedly connected to the support shell, and a second bevel gear meshing with the first bevel gear is fixedly connected to the output end of the first servo motor.

[0010] Preferably, the adjusting component includes a mounting frame disposed inside the drying oven, a second servo motor fixedly connected to the mounting frame, the output end of the second servo motor being fixedly connected to the support shell, and a hydraulic telescopic rod fixedly connected inside the drying oven, with the telescopic end of the hydraulic telescopic rod being fixedly connected to the mounting frame.

[0011] Preferably, the drive assembly includes two driven rollers rotatably mounted inside the drying chamber, and a first conveyor belt and a second conveyor belt are respectively sleeved on the outside of the two driven rollers. Both sides of the drying chamber are rotatably connected to drive rollers, and the first conveyor belt and the second conveyor belt are respectively sleeved on the outside of the two drive rollers. Both sides of the drying chamber are fixedly connected to a third servo motor, and the output end of the third servo motor is fixedly connected to the corresponding drive roller.

[0012] Preferably, two limiting sleeves are fixedly fitted on the outside of both the first conveyor belt and the second conveyor belt.

[0013] The beneficial effects of this utility model are as follows: The operator places the plastic granules to be dried on the first conveyor belt. The first and second conveyor belts are moved by the drive assembly. Water from the plastic granules adheres to the first conveyor belt, which then transports the granules to the second conveyor belt. A first heating plate heats the air inside the drying chamber, and the heated air dries the plastic granules on the second conveyor belt. The dried plastic granules are removed from the drying chamber and transferred to the next process via the second conveyor belt. Simultaneously, a rotator drives a rotating shaft to rotate, and a wiping unit located above the rotating shaft wipes away the water adhering to the bottom of the first conveyor belt. When the wiping unit above the shaft absorbs a lot of water, the wiping units located at both ends of the shaft are swapped using the adjusting component. The wiping unit above is rotated to wipe the water adhering to the bottom of the first conveyor belt, while the wiping unit below is heated and dried by the second heating plate. The first conveyor belt is responsible for receiving the wettest plastic particles, and wiping the water adhering to the first conveyor belt ensures that the plastic particles entering the first conveyor belt are no longer contaminated by the wet first conveyor belt, thereby significantly improving drying efficiency and reducing energy consumption. By wiping the moisture on the first conveyor belt in time, the first conveyor belt is kept relatively dry, effectively preventing mold growth and extending its service life. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the drying oven in an embodiment of this utility model;

[0017] Figure 3 This is a schematic diagram of the wiping unit in an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the internal structure of the support shell in an embodiment of this utility model.

[0019] The diagram is marked as follows:

[0020] 1. Drying oven; 2. First conveyor belt; 3. Second conveyor belt; 4. First heating plate; 5. Support shell; 6. Rotating shaft; 7. Second heating plate; 8. Movable column; 9. Wiping roller; 10. Groove; 11. Compression spring; 12. Guide hole; 13. Guide block; 14. First bevel gear; 15. First servo motor; 16. Second bevel gear; 17. Mounting bracket; 18. Second servo motor; 19. Hydraulic telescopic rod; 20. Driven roller; 21. Driving roller; 22. Third servo motor; 23. Limit sleeve. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0022] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] This specification provides one or more embodiments of a plastic pelletizer drying device, such as... Figure 1 , Figure 2 and Figure 3 As shown, the device includes a drying chamber 1, inside which a first conveyor belt 2 and a second conveyor belt 3 are provided. The second conveyor belt 3 is located below the first conveyor belt 2, and the ends of the first conveyor belt 2 and the second conveyor belt 3 that are far apart from each other extend to the outside of the drying chamber 1. The drying chamber 1 is provided with drive components that drive the first conveyor belt 2 and the second conveyor belt 3 to move respectively.

[0024] A number of first heating plates 4 are fixedly connected inside the drying chamber 1, located above the second conveyor belt 3. A support shell 5 is located below the first conveyor belt 2 inside the drying chamber 1. A rotating shaft 6 is rotatably connected through the support shell 5, and wiping units are respectively provided at both ends of the rotating shaft 6. An adjusting component for adjusting the position of the support shell 5 is provided inside the drying chamber 1. A rotator for driving the rotating shaft 6 is installed on the support shell 5. A second heating plate 7, which cooperates with the wiping unit, is fixedly connected inside the drying chamber 1. The operator places the plastic granules to be dried on the first conveyor belt 2, and drives the first conveyor belt 2 and the second conveyor belt 3 to move via a drive assembly. Water on the plastic granules adheres to the first conveyor belt 2, and then the first conveyor belt 2 transports the plastic granules to the second conveyor belt 3. The first heating plates 4 heat the air inside the drying chamber 1, and then the heated air dries the plastic granules located on the second conveyor belt 3. The dried plastic granules are removed from the drying chamber 1 and transported by the second conveyor belt. 3. The plastic granules are transferred to the next process. While the first conveyor belt 2 moves, the rotary drive shaft 6 rotates. The wiping unit located above the shaft 6 wipes away the water adhering to the bottom of the first conveyor belt 2. When the wiping unit above the shaft 6 absorbs a lot of water, the wiping units at both ends of the shaft 6 are swapped by the adjusting component. The wiping unit rotated to the top wipes away the water adhering to the bottom of the first conveyor belt 2. The second heating plate 7 heats and dries the wiping unit located below. The first conveyor belt 2 is responsible for receiving the wettest plastic granules. The water adhering to the first conveyor belt 2 can be wiped away, ensuring that the plastic granules that have just entered the first conveyor belt 2 are no longer contaminated by the wet first conveyor belt 2. This significantly improves the drying efficiency and reduces energy consumption. By wiping the water off the first conveyor belt 2 in time, the first conveyor belt 2 is kept relatively dry, which effectively prevents the first conveyor belt 2 from becoming moldy and extends its service life.

[0025] In embodiments of this utility model, such as Figure 2 , Figure 3 and Figure 4As shown, the wiping unit includes movable columns 8 respectively disposed above and below the support shell 5. Several wiping rollers 9 for wiping the bottom of the first conveyor belt 2 are rotatably connected to the movable columns 8. Grooves 10 are formed on the movable columns 8, and the two ends of the rotating shaft 6 are respectively located within the two grooves 10. The ends of the rotating shaft 6 are connected to the inner wall of the groove 10 by compression springs 11. Guide holes 12 are formed on the inner wall of the groove 10, and guide blocks 13 are slidably disposed within the guide holes 12. The guide blocks 13 and the rotating shaft 6 are fixedly connected. The rotator includes a first bevel gear 14 fixedly sleeved outside the rotating shaft 6, and the first bevel gear 14 is located inside the support shell 5. A first servo motor 15 is fixedly connected, and a second bevel gear 16 meshing with a first bevel gear 14 is fixedly connected to the output end of the first servo motor 15. The adjusting component includes a mounting bracket 17 disposed within the drying chamber 1, on which a second servo motor 18 is fixedly connected. The output end of the second servo motor 18 is fixedly connected to a support shell 5. A hydraulic telescopic rod 19 is fixedly connected within the drying chamber 1, and the telescopic end of the hydraulic telescopic rod 19 is fixedly connected to the mounting bracket 17. The mounting bracket 17 is driven upward by the hydraulic telescopic rod 19, and the mounting bracket 17, via the second servo motor 18, drives the support shell 5 upward, so that the wiping roller 9 located above... The bottom of the first conveyor belt 2 is in contact with each other. As the rotating shaft 6 continues to move upward, the rotating shaft 6 slides relative to the movable column 8 located above. The guide block 13 slides within the guide hole 12, and the compression spring 11 located above is in a compressed state. By controlling the length of the compression spring 11, the force of the wiping roller 9 pressing on the bottom of the first conveyor belt 2 is controlled. The second bevel gear 16 is driven to rotate by the first servo motor 15. The second bevel gear 16 drives the rotating shaft 6 to rotate through the first bevel gear 14. Thus, the bottom of the first conveyor belt 2 can be wiped by the rotating wiping roller 9. When it is necessary to interchange the wiping units located at both ends of the rotating shaft 6, hydraulic extension is used. The telescopic rod 19 drives the mounting bracket 17 to move downward so that the wiping roller 9 located above is no longer in contact with the first conveyor belt 2. Then, the second servo motor 18 drives the support shell 5 to rotate 180 degrees, so that the wiping roller 9, which was originally located below, can rotate to the top. Then, the mounting bracket 17 is driven to move upward again to the initial height by the hydraulic telescopic rod 19, so that the wiping roller 9 located above can contact the bottom of the first conveyor belt 2 again. When the first servo motor 15 drives the rotating shaft 6 to rotate, the rotating shaft 6 drives the wiping roller 9 located below to pass under the second heating plate 7 in sequence, so that the wet wiping roller 9 can be dried by the second heating plate 7.

[0026] In embodiments of this utility model, such as Figure 1 and Figure 2As shown, the drive assembly includes two driven rollers 20 rotatably mounted inside the drying chamber 1, and the first conveyor belt 2 and the second conveyor belt 3 are respectively sleeved on the outside of the two driven rollers 20. Both sides of the drying chamber 1 are rotatably connected to drive rollers 21, and the first conveyor belt 2 and the second conveyor belt 3 are respectively sleeved on the outside of the two drive rollers 21. Both sides of the drying chamber 1 are fixedly connected to a third servo motor 22, and the output end of the third servo motor 22 is fixedly connected to the corresponding drive roller 21. Two limiting sleeves 23 are fixedly sleeved on the outside of the first conveyor belt 2 and the second conveyor belt 3. The third servo motor 22 drives the drive roller 21 to rotate, which in turn drives the corresponding first conveyor belt 2 or second conveyor belt 3 to move. The two driven rollers 20 rotate synchronously with the first conveyor belt 2 and the second conveyor belt 3. The design of the limiting sleeves 23 prevents plastic particles on the first conveyor belt 2 and the second conveyor belt 3 from falling off from the side.

[0027] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0028] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A drying device for a plastic pelletizer, comprising a drying chamber (1), characterized in that, The drying box (1) is provided with a first conveyor belt (2) and a second conveyor belt (3). The second conveyor belt (3) is located below the first conveyor belt (2), and the ends of the first conveyor belt (2) and the second conveyor belt (3) that are far apart extend to the outside of the drying box (1). The drying box (1) is provided with a drive assembly that drives the first conveyor belt (2) and the second conveyor belt (3) to move respectively. The drying box (1) is fixedly connected with several first heating plates (4) located above the second conveyor belt (3). The drying box (1) is provided with a support shell (5) located below the first conveyor belt (2). A rotating shaft (6) is rotatably connected through the support shell (5). Wiping units are provided at both ends of the rotating shaft (6). The drying box (1) is provided with an adjusting component for adjusting the position of the support shell (5). A rotator for driving the rotating shaft (6) to rotate is installed on the support shell (5). The drying box (1) is fixedly connected with a second heating plate (7) that cooperates with the wiping unit.

2. The drying device for a plastic pelletizer according to claim 1, characterized in that, The wiping unit includes movable columns (8) respectively disposed above and below the support shell (5). Several wiping rollers (9) for wiping the bottom of the first conveyor belt (2) are rotatably connected to the movable columns (8). Grooves (10) are provided on the movable columns (8). The two ends of the rotating shaft (6) are respectively located in the two grooves (10). The end of the rotating shaft (6) is connected to the inner wall of the groove (10) by a compression spring (11). A guide hole (12) is provided on the inner wall of the groove (10). A guide block (13) is slidably provided in the guide hole (12), and the guide block (13) and the rotating shaft (6) are fixedly connected.

3. The drying device for a plastic pelletizer according to claim 1, characterized in that, The rotator includes a first bevel gear (14) fixedly sleeved outside the rotating shaft (6), and the first bevel gear (14) is located inside the support shell (5). A first servo motor (15) is fixedly connected to the support shell (5), and a second bevel gear (16) meshing with the first bevel gear (14) is fixedly connected to the output end of the first servo motor (15).

4. The drying device for a plastic pelletizer according to claim 1, characterized in that, The adjustment component includes a mounting bracket (17) installed inside the drying box (1), a second servo motor (18) is fixedly connected to the mounting bracket (17), the output end of the second servo motor (18) is fixedly connected to the support shell (5), a hydraulic telescopic rod (19) is fixedly connected inside the drying box (1), and the telescopic end of the hydraulic telescopic rod (19) is fixedly connected to the mounting bracket (17).

5. The drying device for a plastic pelletizer according to claim 1, characterized in that, The drive assembly includes two driven rollers (20) rotatably mounted inside the drying chamber (1), and a first conveyor belt (2) and a second conveyor belt (3) respectively sleeved on the outside of the two driven rollers (20). Both sides of the drying chamber (1) are rotatably connected to a drive roller (21), and the first conveyor belt (2) and the second conveyor belt (3) respectively sleeved on the outside of the two drive rollers (21). Both sides of the drying chamber (1) are fixedly connected to a third servo motor (22), and the output end of the third servo motor (22) is fixedly connected to the corresponding drive roller (21).

6. The drying device for a plastic pelletizer according to claim 1, characterized in that, Two limiting sleeves (23) are fixedly fitted on the outside of the first conveyor belt (2) and the second conveyor belt (3).

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