A high-efficiency dryer for plastic recycling raw materials

Abstract

This invention relates to the field of plastic recycling and drying technology, specifically a high-efficiency dryer for plastic recycling raw materials, including a drying chamber with a spin-drying mechanism movably connected inside. By placing the cleaned plastic into the spin-drying mechanism, the rotation of the mechanism removes moisture from the plastic surface. A conveying mechanism is located inside the drying chamber to transport the spin-dried plastic. Several heating rods are located on the upper side of the conveying mechanism. The cleaned plastic is placed into the spin-drying mechanism, and the rotation of the mechanism removes moisture from the plastic surface, storing the removed moisture within the mechanism. The conveying mechanism then transports the spin-dried plastic, and under the action of a fan and heating rods, the plastic on the surface of the conveying mechanism is dried and transported to a recycling crushing mechanism for crushing. This solves the problem of water droplets adhering to the surface of the conveying mechanism, preventing moisture contamination in the crushed plastic.

Description

Technical Field

[0001] This invention relates to the field of plastic recycling and drying technology, specifically to a high-efficiency dryer for plastic recycling raw materials. Background Technology

[0002] Plastics are widely used in people's daily lives, which in turn generates a huge amount of waste plastics. Since plastics can be reused, they are usually recycled to reduce costs. The plastic recycling process requires the use of drying equipment to remove moisture from the surface of the plastics.

[0003] For example, Chinese patent CN221291952U discloses a drying device for plastic recycling, including a protective frame. A conveying mechanism is fixedly installed at the bottom of the protective frame. A perforated cylinder is rotatably connected between the inner walls of the two sides of the protective frame. A sealing plate is fitted onto the top of the perforated cylinder. A drive motor is fixedly installed on one side of the protective frame, and the output end of the drive motor is fixedly connected to one side of the perforated cylinder. A fan is fixedly installed on the front wall of the protective frame. A cover plate is movably connected to the top of the protective frame via a hinge. Several heating tubes arranged in a front-to-back pattern are fixedly installed on the top wall of the protective frame.

[0004] However, the above solution has the following shortcomings: In the above patent, the plastic carrying moisture is put into a perforated cylinder, and the moisture on the plastic is thrown out by the rotation of the perforated cylinder. The spun-dry plastic is transported by a conveyor mechanism, dried, and then crushed. However, when the surface of the washed plastic carries a lot of moisture, the water droplets thrown out will fall on the surface of the conveyor belt. When the spun-dry plastic falls onto the surface of the conveyor belt and comes into contact with the water droplets, as the conveyor belt moves, the plastic with water droplets will enter the crushing mechanism, so that the crushed plastic still contains moisture. To address this, we have introduced a high-efficiency dryer for plastic recycling raw materials. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency dryer for plastic recycling raw materials to solve the problems mentioned in the background art.

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

[0007] A high-efficiency dryer for plastic recycling raw materials includes a drying chamber with a spin-drying mechanism movably connected inside. By placing the cleaned plastic into the spin-drying mechanism, the water on the surface of the plastic is spun out by the rotation of the spin-drying mechanism. A conveying mechanism is provided inside the drying chamber to transport the spin-dried plastic. Several heating rods are provided on the upper side of the conveying mechanism, and both ends of the heating rods are fixedly connected to the inside of the drying chamber. Two fans are fixedly installed inside the upper end of the drying chamber.

[0008] The lower end of the drying chamber is equipped with a recycling and crushing mechanism. The plastic after spin-drying is transported to the recycling and crushing mechanism by the conveying mechanism, and the plastic is crushed by the recycling and crushing mechanism. One end of the drying chamber is equipped with a draining mechanism, which is connected to the spin-drying mechanism so that the water absorbed in the spin-drying mechanism is discharged into the external environment.

[0009] Preferably, the spin-drying mechanism includes a connecting roller, which is movably connected to the inside of the drying chamber. A third motor is fixedly connected to the outside of the drying chamber, and the output end of the third motor is fixedly connected to one end of the connecting roller. A storage cavity is formed inside the connecting roller, and the upper end of the storage cavity is connected to the external environment. A sliding cavity is formed inside the connecting roller, and an arc-shaped toothed plate is slidably connected in the sliding cavity. The upper end of the arc-shaped toothed plate meshes with a transmission gear, which is disposed inside the connecting roller. The connecting roller is fixedly connected to the output end of a first motor, and the first motor is fixedly installed inside the connecting roller.

[0010] Preferably, one end of the arc-shaped toothed plate is fixedly connected to the arc-shaped rod, and the end of the arc-shaped rod away from the arc-shaped toothed plate extends into the connecting cavity. The connecting cavity is opened inside the connecting roller, and a squeezing block is slidably connected inside the connecting cavity. One end of the squeezing block is fixedly connected to the water-absorbing sponge, and the end of the water-absorbing sponge away from the squeezing block is fixedly connected to the connecting cavity.

[0011] Preferably, the connecting roller has a guide cavity, and the upper and lower ends of the guide cavity have several through holes. The guide cavity is connected to the storage cavity and the connecting cavity through the through holes. An arc-shaped connecting plate is slidably connected in the guide cavity. The arc-shaped connecting plate has several drainage holes. A reset spring is fixedly connected in the guide cavity. The other end of the reset spring is fixedly connected to the arc-shaped connecting plate.

[0012] Preferably, a liquid guiding cavity is provided in the lower end of the connecting roller. One end of the liquid guiding cavity is connected to the external environment, and the other end is connected to the connecting cavity. A block is movably connected in the liquid guiding cavity. A connecting spring is fixedly connected to one end of the block, and the other end of the connecting spring is fixedly connected to the liquid guiding cavity.

[0013] Preferably, the conveying mechanism includes a conveyor belt disposed inside the drying chamber. Two drive rollers are provided on the inner side of the conveyor belt and are movably connected to the inner side of the drying chamber. A connecting motor is fixedly connected to the outer side of the drying chamber, and the output end of the connecting motor is fixedly connected to one of the drive rollers.

[0014] Preferably, the crushing mechanism includes a crushing box, the lower end of which is fixedly connected to the lower end of the drying box. Two crushing rollers are movably connected inside the crushing box. One end of each crushing roller passes through the crushing box and is fixedly connected to a connecting gear. The two connecting gears mesh with each other. A second motor is fixedly connected to one end of the crushing box, and the output end of the second motor is fixedly connected to one of the crushing rollers.

[0015] Preferably, the draining mechanism includes a cross-shaped drain pipe, which is movably connected to the inside of the drying chamber. One end of the cross-shaped drain pipe extends into the inside of the drying chamber, and the other end extends into the external environment. A limiting block is fixedly sleeved on the outside of the cross-shaped drain pipe, and a limiting hole is provided at the upper end of the limiting block. A support spring is sleeved on the outside of the cross-shaped drain pipe, with one end fixedly connected to the limiting block and the other end fixedly connected to the drying chamber. A limiting rod is provided on the upper side of the cross-shaped drain pipe, and the limiting rod is movably connected to the outside of the drying chamber.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: by placing the cleaned plastic into the spin-drying mechanism, the water on the surface of the plastic is spun out by the rotation of the spin-drying mechanism, and the spun-out water is stored in the spin-drying mechanism. The spin-dried plastic is then conveyed by the conveying mechanism. Under the action of the fan and the heating rod, the plastic on the surface of the conveying mechanism is dried and conveyed to the recycling and crushing mechanism for crushing. This solves the problem that water droplets adhere to the surface of the conveying mechanism, resulting in water still being mixed into the crushed plastic. Attached Figure Description

[0017] Figure 1 This is a schematic cross-sectional view of the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of the connecting roller structure of the present invention;

[0019] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This is a schematic cross-sectional view of the connection relationship between the sliding cavity and the connecting cavity of the present invention;

[0021] Figure 5 This is a three-dimensional structural diagram illustrating the connection relationship between the arc-shaped toothed plate and the connecting roller of the present invention;

[0022] Figure 6 This is a three-dimensional structural diagram of the arc-shaped toothed plate in its retracted state according to the present invention;

[0023] Figure 7 This is a schematic diagram of the front structure of the present invention;

[0024] Figure 8 This is a schematic diagram of the rear view structure of the present invention.

[0025] In the diagram: 1. Drying oven; 2. Heating rod; 3. Fan; 4. Connecting roller; 5. Cross-shaped drain pipe; 6. Limiting block; 7. Support spring; 8. Limiting hole; 9. Transmission roller; 10. Conveyor belt; 11. Crushing box; 12. Crushing roller; 13. Third motor; 14. Connecting motor; 15. Connecting gear; 16. Arc-shaped toothed plate; 17. Storage chamber; 18. Connecting spring; 19. Arc-shaped rod; 20. Transmission gear; 21. Sliding cavity; 22. Limiting rod; 23. Return spring; 24. Squeezing block; 25. Absorbent sponge; 26. Second motor; 27. Liquid guiding cavity; 28. Connecting cavity; 29. ​​Guide cavity; 30. Through hole; 31. First motor; 32. Drain hole; 33. Block; 34. Arc-shaped connecting plate. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-8 The present invention provides a technical solution: Example

[0028] A high-efficiency dryer for recycled plastic materials includes a drying chamber 1. A spin-drying mechanism is movably connected inside the drying chamber 1. Washed plastic is placed into the spin-drying mechanism, and the rotation of the mechanism removes moisture from the plastic surface. A conveying mechanism is located inside the drying chamber 1 to transport the spin-dried plastic. The conveying mechanism includes a conveyor belt 10, which is disposed inside the drying chamber 1. Two drive rollers 9 are located inside the conveyor belt 10 and are movably connected to the inside of the drying chamber 1. A connecting motor 14 is fixedly connected to the outside of the drying chamber 1. The output end of the connecting motor 14 is fixedly connected to one of the drive rollers 9. Turning on the connecting motor 14 drives one of the drive rollers 9 to rotate. The rotation of the drive roller 9 moves the conveyor belt 10, and the spin-dried plastic that falls onto the surface of the conveyor belt 10 is conveyed and moved. Figure 1It is known that the drying chamber 1 has a partition inside, and there is a certain gap between the partition and the conveyor belt 10. By setting this gap, the plastic that falls onto the surface of the conveyor belt 10 will be spread out evenly, preventing the plastic from accumulating and thus not being completely dried.

[0029] Several heating rods 2 are provided on the upper side of the conveying mechanism. The specific model of the heating rods 2 is JPZ-004 produced by Foshan Jiapuzhi Electric Appliance Co., Ltd. Both ends of the heating rods 2 are fixedly connected to the inside of the drying box 1. Two fans 3 are fixedly installed inside the upper end of the drying box 1. When the heating rods 2 and the two fans 3 are turned on, the heat generated by the heating rods 2 is blown into the plastic surface above the conveyor belt 10 to complete the drying process of the plastic on the surface of the conveyor belt 10. The lower end of the drying box 1 is provided with a recycling and crushing mechanism. The plastic after spin drying is transported to the recycling and crushing mechanism through the conveying mechanism and crushed by the recycling and crushing mechanism. One end of the drying box 1 is provided with a draining mechanism, which is connected to the spin drying mechanism so that the water absorbed in the spin drying mechanism is discharged into the external environment. Example

[0030] Based on Example 1, in order to collect the moisture spun off from the plastic surface, the spin-drying mechanism includes a connecting roller 4, which is movably connected to the inside of the drying chamber 1. A third motor 13 is fixedly connected to the outside of the drying chamber 1, and the output end of the third motor 13 is fixedly connected to one end of the connecting roller 4. A storage cavity 17 is provided inside the connecting roller 4, and the upper end of the storage cavity 17 is connected to the external environment. A sliding cavity 21 is provided inside the connecting roller 4, and an arc-shaped toothed plate 16 slides in the sliding cavity 21. The upper end of the arc-shaped toothed plate 16 meshes with a transmission gear 20, which is located inside the connecting roller 4. The first motor 31 is fixedly connected to the output end of the first motor 31, which is fixedly installed inside the connecting roller 4. The first motor 31 drives the transmission gear 20 to rotate. Since the lower end of the transmission gear 20 meshes with the arc-shaped toothed plate 16, the arc-shaped toothed plate 16 will retract into the sliding cavity 21 during the rotation of the transmission gear 20. At this time, the cleaned plastic can be stored in the storage cavity 17. After storage is completed, the first motor 31 is turned on again to drive the transmission gear 20 to rotate in the opposite direction. At this time, the arc-shaped toothed plate 16 extends from the sliding cavity 21 and blocks the connection between the storage cavity 17 and the external environment.

[0031] One end of the arc-shaped toothed plate 16 is fixedly connected to the arc-shaped rod 19. The end of the arc-shaped rod 19 away from the arc-shaped toothed plate 16 extends into the connecting cavity 28. The connecting cavity 28 is opened in the connecting roller 4. The extrusion block 24 is slidably connected in the connecting cavity 28. One end of the extrusion block 24 is fixedly connected to the water-absorbing sponge 25. The end of the water-absorbing sponge 25 away from the extrusion block 24 is fixedly connected to the connecting cavity 28. When the third motor 13 is turned on, the connecting roller 4 is rotated. During the rotation of the connecting roller 4, the water on the plastic surface is thrown out and enters the connecting cavity 28 through the through hole 30 and the drain hole 32. The water-absorbing sponge 25 located in the connecting cavity 28 absorbs the water that enters.

[0032] A guide cavity 29 is provided inside the connecting roller 4. Several through holes 30 are provided in both the upper and lower ends of the guide cavity 29. The guide cavity 29 is connected to the storage cavity 17 and the connecting cavity 28 through the through holes 30. An arc-shaped connecting plate 34 is slidably connected inside the guide cavity 29. Several drainage holes 32 are provided in the arc-shaped connecting plate 34. A return spring 23 is fixedly connected inside the guide cavity 29. The other end of the return spring 23 is fixedly connected to the arc-shaped connecting plate 34. During the process of the arc-shaped toothed plate 16 moving into the sliding cavity 21, the arc-shaped rod 19 will move along with it and enter the connecting cavity 28 to push the extrusion block 24. The extrusion block 24 extrudes the water-absorbing sponge 25.

[0033] A liquid guiding cavity 27 is provided in the lower end of the connecting roller 4. One end of the liquid guiding cavity 27 is connected to the external environment, and the other end is connected to the connecting cavity 28. A block 33 is movably connected in the liquid guiding cavity 27. A connecting spring 18 is fixedly connected to one end of the block 33. The other end of the connecting spring 18 is fixedly connected to the liquid guiding cavity 27. The connecting spring 18 is preferably a corrosion-resistant stainless steel spring.

[0034] The crushing mechanism includes a crushing box 11, the lower end of which is fixedly connected to the lower end of the drying box 1. Two crushing rollers 12 are movably connected inside the crushing box 11. One end of the crushing roller 12 passes through the crushing box 11 and is fixedly connected to a connecting gear 15. The two connecting gears 15 mesh with each other. A second motor 26 is fixedly connected to one end of the crushing box 11. The output end of the second motor 26 is fixedly connected to one of the crushing rollers 12. The starting of the second motor 26 drives one of the crushing rollers 12 to rotate. Since the two connecting gears 15 mesh with each other, the two crushing rollers 12 will crush the plastic that enters the crushing box 11. The crushed plastic is discharged into the external environment.

[0035] The drainage mechanism includes a cross-shaped drainage pipe 5, which is movably connected to the drying chamber 1. One end of the cross-shaped drainage pipe 5 extends into the inside of the drying chamber 1, and the other end extends into the external environment. A limiting block 6 is fixedly sleeved on the outside of the cross-shaped drainage pipe 5. A limiting hole 8 is opened at the upper end of the limiting block 6. A support spring 7 is sleeved on the outside of the cross-shaped drainage pipe 5. One end of the support spring 7 is fixedly connected to the limiting block 6, and the other end is fixedly connected to the drying chamber 1. A limiting rod 22 is provided on the upper side of the cross-shaped drainage pipe 5. The limiting rod 22 is movably connected to the outside of the drying chamber 1. By pushing the cross-shaped drainage pipe 5, one end is inserted into the liquid guiding cavity 27. The cross-shaped drainage pipe 5 entering the liquid guiding cavity 27 pushes the block 33, so that the liquid guiding cavity 27 and the cross-shaped drainage pipe 5 are connected. The limiting rod 22 is inserted into the limiting hole 8, so that the cross-shaped drainage pipe 5 is limited and fixed.

[0036] Working principle: During use, the first motor 31 drives the transmission gear 20 to rotate. Since the lower end of the transmission gear 20 meshes with the arc-shaped toothed plate 16, the arc-shaped toothed plate 16 will retract into the sliding cavity 21 during the rotation of the transmission gear 20. At this time, the cleaned plastic can be stored in the storage cavity 17. After storage, the first motor 31 is turned on again to drive the transmission gear 20 to rotate in the opposite direction. At this time, the arc-shaped toothed plate 16 extends from the sliding cavity 21 and blocks the connection between the storage cavity 17 and the external environment. At this time, the third motor 13 is turned on to drive the connecting roller 4 to rotate. During the rotation of the connecting roller 4, the water on the surface of the plastic will be thrown out and enter the connecting cavity 28 through the through hole 30 and the drain hole 32. The water-absorbing sponge 25 located in the connecting cavity 28 absorbs the water.

[0037] After the spin-drying is completed, the connecting motor 14 is turned on to drive a transmission roller 9 to rotate. The rotation of the transmission roller 9 drives the conveyor belt 10 to move. At this time, the arc-shaped toothed plate 16 is opened, so that the position of the storage chamber 17 communicating with the external environment rotates to above the conveyor belt 10. At this time, the spin-dried plastic will be discharged and fall onto the conveyor belt 10. The conveyor belt 10 can convey the plastic. Several heating rods 2 and two fans 3 are turned on. After the fans 3 are started, the heat generated by the heating rods 2 is blown into the plastic surface above the conveyor belt 10 to complete the drying process of the plastic.

[0038] The dried plastic enters the crushing box 11. The second motor 26 drives a crushing roller 12 to rotate. Since the two connecting gears 15 mesh with each other, the two crushing rollers 12 crush the plastic that enters the crushing box 11. The crushed plastic is discharged into the external environment.

[0039] When the absorbent sponge 25 has absorbed a large amount of water and needs to be drained, rotate the connection between the storage cavity 17 and the external environment to the upper side. Push one end of the cross-shaped drain pipe 5 into the liquid guiding cavity 27. The cross-shaped drain pipe 5, now inside the liquid guiding cavity 27, pushes the block 33, connecting the liquid guiding cavity 27 and the cross-shaped drain pipe 5. Insert the limiting rod 22 into the limiting hole 8, fixing the cross-shaped drain pipe 5 in place. At this point, retract the arc-shaped toothed plate 16 into the sliding cavity 21, and the arc-shaped toothed plate 16 is no longer aligned with the arc. When the arc-shaped connecting plate 34 is in the return spring 23, the arc-shaped connecting plate 34 will move to the left. At the same time, the drain hole 32 and the through hole 30 will be misaligned. As the arc-shaped toothed plate 16 moves into the sliding cavity 21, the arc-shaped rod 19 will follow and enter the connecting cavity 28 to push the squeezing block 24. The squeezing block 24 will squeeze the water-absorbing sponge 25, so that the water absorbed by the water-absorbing sponge 25 will be squeezed into the liquid guiding cavity 27. The water will eventually enter the cross-shaped drain pipe 5 through the liquid guiding cavity 27 and be discharged.

[0040] After drainage is completed, the limiting rod 22 is removed from the limiting hole 8. At this time, under the elastic force of the support spring 7, the cross-shaped drain pipe 5 returns to its initial position. At the same time, under the elastic force of the connecting spring 18, the block 33 re-seals the liquid guiding cavity 27.

[0041] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency dryer for plastic recycling raw materials, comprising a drying chamber, characterized in that: The drying chamber is movably connected to a spin-drying mechanism. By placing the washed plastic into the spin-drying mechanism, the water on the surface of the plastic is spun out by the rotation of the spin-drying mechanism. The drying chamber is equipped with a conveying mechanism to transport the spun-dry plastic. Several heating rods are provided on the upper side of the conveying mechanism. Both ends of the heating rods are fixedly connected to the inside of the drying chamber. Two fans are fixedly installed in the upper part of the drying chamber. The lower end of the drying box is equipped with a recycling and crushing mechanism. The plastic after spin drying is transported to the recycling and crushing mechanism through the conveying mechanism. The plastic is crushed by the recycling and crushing mechanism. One end of the drying box is equipped with a draining mechanism, which is connected to the spin drying mechanism so that the water absorbed in the spin drying mechanism is discharged into the external environment. The spin-drying mechanism includes a connecting roller, which is movably connected to the inside of the drying chamber. A third motor is fixedly connected to the outside of the drying chamber. The output end of the third motor is fixedly connected to one end of the connecting roller. A storage cavity is formed inside the connecting roller, and the upper end of the storage cavity is connected to the external environment. A sliding cavity is formed inside the connecting roller, and an arc-shaped toothed plate slides in the sliding cavity. The upper end of the arc-shaped toothed plate meshes with a transmission gear, which is located inside the connecting roller. The connecting roller is fixedly connected to the output end of a first motor, and the first motor is fixedly installed inside the connecting roller. One end of the arc-shaped toothed plate is fixedly connected to the arc-shaped rod, and the end of the arc-shaped rod away from the arc-shaped toothed plate extends into the connecting cavity. The connecting cavity is opened in the connecting roller, and a squeezing block is slidably connected in the connecting cavity. One end of the squeezing block is fixedly connected to the water-absorbing sponge, and the end of the water-absorbing sponge away from the squeezing block is fixedly connected to the connecting cavity. The connecting roller has a guide cavity, and the upper and lower ends of the guide cavity have several through holes. The guide cavity is connected to the storage cavity and the connecting cavity through the through holes. An arc-shaped connecting plate is slidably connected in the guide cavity. The arc-shaped connecting plate has several drainage holes. A reset spring is fixedly connected in the guide cavity. The other end of the reset spring is fixedly connected to the arc-shaped connecting plate.

2. The high-efficiency dryer for plastic recycling according to claim 1, characterized in that: A liquid guiding cavity is provided in the lower end of the connecting roller. One end of the liquid guiding cavity is connected to the external environment, and the other end is connected to the connecting cavity. A block is movably connected in the liquid guiding cavity. A connecting spring is fixedly connected to one end of the block, and the other end of the connecting spring is fixedly connected to the liquid guiding cavity.

3. The high-efficiency dryer for plastic recycling according to claim 1, characterized in that: The conveying mechanism includes a conveyor belt, which is installed inside the drying chamber. Two drive rollers are provided on the inner side of the conveyor belt and are movably connected to the inner side of the drying chamber. A connecting motor is fixedly connected to the outer side of the drying chamber, and the output end of the connecting motor is fixedly connected to one of the drive rollers.

4. The high-efficiency dryer for plastic recycling according to claim 1, characterized in that: The crushing mechanism includes a crushing box, the lower end of which is fixedly connected to the lower end of a drying box. Two crushing rollers are movably connected inside the crushing box. One end of each crushing roller passes through the crushing box and is fixedly connected to a connecting gear. The two connecting gears mesh with each other. A second motor is fixedly connected to one end of the crushing box, and the output end of the second motor is fixedly connected to one of the crushing rollers.

5. The high-efficiency dryer for plastic recycling according to claim 1, characterized in that: The drainage mechanism includes a cross-shaped drainage pipe, which is movably connected inside the drying chamber. One end of the cross-shaped drainage pipe extends into the inside of the drying chamber, and the other end extends into the external environment. A limiting block is fixedly sleeved on the outside of the cross-shaped drainage pipe, and a limiting hole is opened at the upper end of the limiting block. A support spring is sleeved on the outside of the cross-shaped drainage pipe, with one end fixedly connected to the limiting block and the other end fixedly connected to the drying chamber. A limiting rod is provided on the upper side of the cross-shaped drainage pipe, and the limiting rod is movably connected to the outside of the drying chamber.

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