Plastic particle drying device

Abstract

The invention provides a plastic particle drying device. The plastic particle drying device comprises a drying pipe, a mounting frame, a moving mechanism and a hopper. Plastic particles fall into the drying pipe from the discharging port in the bottom end of the hopper and fall in a zigzag mode along the baffling channel formed by the multiple sets of flow guide plates, the falling path of the plastic particles is effectively prolonged through the baffling channel, and therefore the drying time is prolonged; the hot air is evenly distributed, drying dead angles are avoided, meanwhile, the moving mechanism drives the mounting frame to drive the flow guide plate to vertically move in a reciprocating mode, the flow guide plate vertically moves in a reciprocating mode and collides with the plastic particles, the plastic particles can be scattered and thrown away, mutual shielding of the plastic particles can be avoided, and drying efficiency is improved. The plastic particle drying device is simple in structure and convenient for all-directional contact of hot air and plastic particles, the falling time of the plastic particles can be further prolonged by throwing the plastic particles, and meanwhile, blockage is effectively avoided, so that the drying efficiency and effect are improved, and the continuity of drying operation is improved.

Description

Technical Field

[0001] This invention relates to the field of plastic granule drying technology, and more specifically to a plastic granule drying apparatus. Background Technology

[0002] In the plastics processing industry, the drying of plastic granules is a crucial preliminary step to ensure the quality of subsequent processing steps such as injection molding and extrusion. The drying effect directly affects the mechanical properties, appearance accuracy, and molding qualification rate of plastic products. If there is residual moisture in the plastic granules, it will cause defects such as bubbles, silver streaks, and surface fogging in the products, increasing the scrap rate.

[0003] Currently, plastic granules are mostly in a free-falling or statically piled state during the drying process. The falling path is short, resulting in limited contact time with hot air. Furthermore, the granules easily stick together and block each other, preventing the hot air from making full contact with the granule surface, leading to poor drying efficiency and effect. Simultaneously, freely falling plastic granules are prone to blockage or bridging in the drying channel, affecting the continuity of drying operations, increasing equipment maintenance costs and downtime. In addition, the hot air conveying structure of drying devices is mostly unidirectional, making it difficult to achieve uniform distribution of hot air within the drying chamber, easily resulting in drying dead zones. Therefore, to address the above technical problems, a plastic granule drying device is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes a plastic granule drying device that can effectively extend the contact time between plastic granules and hot air, achieve uniform distribution of hot air, prevent plastic granules from blocking and clogging each other, improve the efficiency and effect of plastic granule drying, and enhance the continuity of drying operations.

[0005] A plastic pellet drying apparatus, comprising: A drying pipe is connected to the feed inlet of the storage silo; a flow divider is provided circumferentially inside the wall of the drying pipe, and an air inlet pipe connected to the flow divider is provided on the outside; multiple sets of air outlets connected to the flow divider are provided circumferentially and vertically inside the drying pipe. The mounting frame is vertically slidably installed inside the drying tube cavity. The mounting frame has mounting rods at the bottom of both sides. Multiple sets of inclined guide plates are vertically spaced on both sets of mounting rods. The multiple sets of guide plates on both sides are inclined in opposite directions and are staggered at their low ends to form a baffle channel in conjunction with the drying tube cavity. A moving mechanism, disposed on the drying tube and connected to the mounting frame, is used to drive the mounting frame to reciprocate; and A hopper is installed on the storage bin, and the discharge port at the bottom of the hopper is located above the uppermost guide plate.

[0006] In one embodiment, a collection trough is provided in the lower end of each of the multiple sets of guide plates, and a water inlet trough communicating with the collection trough is provided on the top surface of the lower end of each of the multiple sets of guide plates. A guide pipe with opposite inclination and communicating with the bottom surface of the collection trough is provided at the bottom end of each of the multiple sets of guide plates. A confluence channel communicating with the bottom end of the multiple sets of guide pipes is vertically provided in both sets of mounting rods. The bottom ends of the two sets of confluence channels are connected by a drain pipe, and one end of the drain pipe extends to the outside of the drying pipe.

[0007] In one embodiment, a spill prevention mechanism is also included. The spill prevention mechanism includes a pressure plate, a sponge, and a first transmission assembly. The pressure plate is slidably disposed in multiple sets of collection tanks, and the sponge is disposed on the bottom surface of multiple sets of collection tanks. The two sides of the sponge abut against the pressure plate and the side wall of the collection tank, respectively. The first transmission assembly connects the inner cavity of the drying tube and the multiple sets of pressure plates, and is used to convert the reciprocating movement of the mounting frame into the reciprocating movement of the pressure plate.

[0008] In one embodiment, the first transmission assembly includes a guide plate and a transmission rod; both sets of mounting rods have receiving grooves on their opposite sides, and the guide plates located in the receiving grooves are provided on opposite sides of the inner cavity of the drying tube. Both sets of guide plates have wave-shaped guide grooves extending in the vertical direction. The transmission rods are slidably inserted through multiple sets of guide plates. One end of the transmission rod is connected to the pressure plate, and the other end is slidably disposed in the wave-shaped guide grooves via a pivot.

[0009] In one embodiment, the moving mechanism includes a motor, a turntable, a lever, and a slot; the motor is disposed outside the drying tube, and the turntable is coaxially disposed at its output end; one end of the turntable extends into the inner cavity of the drying tube, and the lever is eccentrically disposed thereon; the slot is horizontally opened on one side of the mounting bracket, and the lever is slidably disposed in the slot.

[0010] In one embodiment, the moving mechanism further includes an adjustment component, which includes a sliding seat and an adjustment screw; a groove is provided at one end of the turntable, the sliding seat is slidably disposed in the groove along the radial direction of the turntable, the lever is fixed on the sliding seat, and the adjustment screw is rotatably disposed in the groove and threadedly connected to the sliding seat.

[0011] In one embodiment, the hopper further includes a discharge mechanism, which includes a spring, baffles, and a second transmission assembly. The drying tube slides vertically through the feed inlet, and the springs on both sides of the drying tube are connected to the feed inlet. The springs provide upward support to the drying tube. Two sets of baffles are slidably disposed at the bottom of the discharge outlet. The second transmission assembly connects the drying tube and the two sets of baffles and drives the two sets of baffles to move closer or further apart when the drying tube slides downward or upward.

[0012] In one embodiment, the second transmission assembly includes a bidirectional screw, a first gear, and a first rack; the bidirectional screw is rotatably disposed on the periphery of the discharge port, and its two ends are respectively threadedly connected to two sets of baffles; one end of the bidirectional screw is coaxially disposed with the first gear, and the first rack is disposed on the periphery of the drying tube and meshes with the first gear.

[0013] In one embodiment, the discharge mechanism further includes an anti-clogging component, which includes a stirring rod and a third transmission component. The stirring rod is rotatably disposed within the discharge port, and the third transmission component connects the drying pipe and the stirring rod to convert the movement of the drying pipe into the rotation of the stirring rod.

[0014] In one embodiment, the third transmission assembly includes a second gear and a second rack. The second gear is coaxially disposed at one end of the stirring rod, and the second rack is disposed on the periphery of the drying tube and meshes with the second gear.

[0015] The aforementioned plastic granule drying device has at least the following beneficial effects: Plastic granules fall into the drying tube from the discharge port at the bottom of the hopper, and fall in a zigzag pattern along the baffle channel formed by multiple sets of guide plates. The baffle channel effectively extends the falling path of the plastic granules, thereby extending the drying time. At the same time, hot air enters the distribution chamber inside the drying tube wall through the air inlet pipe, and then is evenly blown onto the plastic granules in the baffle channel through multiple sets of air outlets. The hot air is evenly distributed and avoids drying dead zones. Meanwhile, the moving mechanism drives the mounting frame to move the guide plates vertically back and forth. The vertical back and forth movement of the guide plates and their collision with the plastic granules can break up and throw the plastic granules, which can prevent the plastic granules from blocking each other and facilitate all-round contact between the hot air and the plastic granules. Throwing the plastic granules further extends the falling time of the plastic granules and also effectively avoids blockage, thereby improving the drying efficiency and effect, as well as the continuity of the drying operation. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a plastic granule drying device according to an embodiment of the present invention; Figure 2 for Figure 1 The image shows a front view of a plastic granule drying device after sectional cutting. Figure 3 for Figure 1 The image shown is an exploded view of a plastic granule drying device after being cut open. Figure 4 for Figure 1 The diagram shows a front view of a guide plate in a plastic granule drying device after it has been cut open. Figure 5 for Figure 1 An exploded view of the moving mechanism in a plastic granule drying device is shown. Figure 6 for Figure 1 An exploded view of the discharge mechanism in a plastic granule drying device is shown. Figure 7 for Figure 1 The diagram shows a three-dimensional structural schematic of an anti-clogging component in a plastic granule drying device.

[0018] Figure label: 1. Feed inlet; 11. Guide column; 10. Drying tube; 101. Diverter chamber; 102. Air inlet pipe; 103. Air outlet; 104. Connecting sleeve; 20. Mounting bracket; 201. Mounting rod; 2011. Receiving tank; 202. Flow guide plate; 203. Baffle channel; 204. Collection tank; 205. Water inlet tank; 206. Flow guide pipe; 207. Merging channel; 208. Drain pipe; 30. Hopper; 301. Discharge port; 302. Spring; 303. Baffle; 304. Double-acting screw; 305. First gear; 306. First rack; 307. Stirring rod; 308. Second gear; 309. Second rack; 40. Pressure plate; 401. Sponge; 402. Guide plate; 403. Transmission rod; 404. Corrugated guide groove; 50. Motor; 501. Turntable; 5011. Slide groove; 502. Lever; 503. Slide groove; 504. Sliding seat; 505. Adjusting screw. Detailed Implementation

[0019] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0020] Please see Figures 1 to 3 A plastic granule drying device according to one embodiment includes a drying pipe 10, a mounting frame 20, a moving mechanism, and a hopper 30. The drying pipe 10 is connected to the inlet 1 of the storage hopper. A flow-dividing cavity 101 is circumferentially formed inside the drying pipe 10, and an air inlet pipe 102 communicating with the flow-dividing cavity 101 is provided on the outer side. Multiple sets of air outlets 103 communicating with the flow-dividing cavity 101 are formed circumferentially and vertically inside the drying pipe 10. The mounting frame 20 is slidably disposed vertically inside the drying pipe 10. Mounting rods 201 are provided at the bottom ends of both sides of the mounting frame 20. Multiple sets of inclined guide plates 202 are arranged vertically at intervals on both sets of mounting rods 201. The multiple sets of guide plates 202 on both sides are inclined in opposite directions and their lower ends are alternately staggered to form a baffle channel 203 inside the drying pipe 10. The moving mechanism is disposed on the drying pipe 10 and connected to the mounting frame 20, and is used to drive the mounting frame 20 to reciprocate. The hopper 30 is installed on the storage bin, and the discharge port 301 at the bottom of the hopper 30 is located above the uppermost guide plate 202.

[0021] In the above embodiment, plastic granules fall into the drying tube 10 from the discharge port 301 at the bottom of the hopper 30, and fall in a zigzag manner along the baffle channel 203 formed by multiple sets of guide plates 202. The baffle channel 203 effectively extends the falling path of the plastic granules, thereby extending the drying time. At the same time, hot air enters the diversion chamber 101 inside the tube wall of the drying tube 10 through the air inlet pipe 102, and then is evenly blown onto the plastic granules in the baffle channel 203 through multiple sets of air outlets 103. The hot air is evenly distributed and avoids drying dead corners. Meanwhile, the moving mechanism drives the mounting frame 20 to move the guide plates 202 vertically back and forth. The vertical back and forth movement of the guide plates 202 and their collision with the plastic granules can scatter and throw the plastic granules, which can prevent the plastic granules from blocking each other, facilitate the all-round contact between the hot air and the plastic granules, and throw the plastic granules to further extend the falling time of the plastic granules. At the same time, it can also effectively avoid blockage, thereby improving the drying efficiency and effect, as well as the continuity of the drying operation. Understandably, the diameter of the vent 103 is smaller than the size of the plastic particles to prevent the plastic particles from clogging the vent 103 or entering the diversion chamber 101.

[0022] Please see Figure 1 , Figure 3 and Figure 4In one embodiment, a collection trough 204 is provided in the lower end of each of the multiple sets of guide plates 202, and a water inlet trough 205 communicating with the collection trough 204 is provided on the top surface of the lower end of each of the multiple sets of guide plates 202. A guide pipe 206 with opposite inclination and communicating with the bottom surface of the collection trough 204 is provided at the bottom of each of the multiple sets of guide plates 202. A confluence channel 207 communicating with the bottom of the multiple sets of guide pipes 206 is vertically provided in each of the two sets of mounting rods 201. The bottom ends of the two sets of confluence channels 207 are connected by a drain pipe 208, and one end of the drain pipe 208 extends to the outside of the drying pipe 10.

[0023] In the above embodiment, when the plastic particles fall onto the guide plate 202, excess water adheres to the surface of the guide plate 202 and flows downwards along it. It is understood that once the water adheres to the surface of the guide plate 202, it is not easily thrown away during the reciprocating movement of the guide plate 202. At this time, the water inlet trough 205 at the lower end of the guide plate 202 can collect this water in a timely manner, and guides it through the collection trough 204 and the guide pipe 206 into the confluence channel 207 within the mounting rod 201, and finally discharges it outside the drying pipe 10 through the drain pipe 208. This effectively prevents excess water from adhering to the plastic particles again and causing secondary damping, further improving the drying effect and efficiency. It is understood that the opening size of the water inlet trough 205 is smaller than the size of the plastic particles to prevent the plastic particles from getting stuck in the water inlet trough 205 or entering the collection trough 204.

[0024] Please see Figure 4 Based on the above embodiments, it further includes a spill prevention mechanism, which includes a pressure plate 40, a sponge 401, and a first transmission assembly. The pressure plate 40 is slidably disposed in each of the multiple sets of collection tanks 204, and the sponge 401 is disposed on the bottom surface of each of the multiple sets of collection tanks 204. The two sides of the sponge 401 abut against the pressure plate 40 and the side wall of the collection tank 204, respectively. The first transmission assembly connects the inner cavity of the drying tube 10 and the multiple sets of pressure plates 40, and is used to convert the reciprocating movement of the mounting frame 20 into the reciprocating movement of the pressure plate 40.

[0025] In the above embodiment, when water flows into the collection tank 204, the sponge 401 can absorb the water in the collection tank 204. The first transmission component converts the reciprocating movement of the mounting frame 20 into the reciprocating movement of the pressure plate 40. The reciprocating movement of the pressure plate 40 can squeeze the sponge 401, thereby squeezing out the water absorbed by the sponge 401 and guiding it into the guide pipe 206. This effectively prevents the water in the collection tank 204 from spilling due to shaking and bumping when the mounting frame 20 reciprocates, and prevents the spilled water from contacting the plastic particles and causing them to become damp again. The power transmission is achieved through the first transmission component, eliminating the need for an additional power mechanism and reducing energy consumption.

[0026] Specifically, in the above embodiments, the first transmission assembly includes a guide plate 402 and a transmission rod 403; both sets of mounting rods 201 have receiving grooves 2011 on their opposite sides, and the inner cavity of the drying tube 10 is provided with guide plates 402 located in the receiving grooves 2011 on both opposite sides. Both sets of guide plates 402 have wave guide grooves 404 extending in the vertical direction. The transmission rods 403 are slidably passed through the multiple sets of guide plates 202. One end of the transmission rod 403 is connected to the pressure plate 40, and the other end is slidably set in the wave guide grooves 404 through a pivot.

[0027] In the above embodiment, when the mounting frame 20 moves up and down reciprocally, the mounting frame 20 drives multiple sets of transmission rods 403 to move up and down reciprocally. The multiple sets of transmission rods 403 can move up and down reciprocally relative to the guide plate 202 by cooperating with the pivot shaft and the wave guide groove 404, thereby driving the pressure plate 40 to move back and forth to squeeze the sponge 401. It is convenient to drive the pressure plate 40 to move back and forth to squeeze the sponge 401. The guide plate 402 is set in the receiving groove 2011 of the mounting rod 201, and the transmission rods 403 slide through the guide plate 202. The overall structure is hidden and does not occupy the effective drying space inside the drying tube 10, nor does it affect the normal falling of plastic particles along the baffle channel 203.

[0028] Please see Figure 2 , Figure 3 and Figure 5 In one embodiment, the moving mechanism includes a motor 50, a turntable 501, a lever 502, and a groove 503. The motor 50 is located outside the drying tube 10, and the turntable 501 is coaxially arranged at its output end. One end of the turntable 501 extends into the inner cavity of the drying tube 10, and the lever 502 is eccentrically arranged. A groove 503 is horizontally opened on one side of the mounting bracket 20, and the lever 502 is slidably arranged in the groove 503.

[0029] In the above embodiment, the motor 50 drives the turntable 501 to rotate, and the eccentric lever 502 on the turntable 501 slides in the slot 503 of the mounting bracket 20, which can drive the mounting bracket 20 to move up and down reciprocally, making it convenient to drive the mounting bracket 20 to move up and down reciprocally.

[0030] Based on the above embodiments, the moving mechanism further includes an adjustment component, which includes a sliding seat 504 and an adjusting screw 505; a groove 5011 is provided at one end of the turntable 501, the sliding seat 504 is slidably disposed in the groove 5011 along the radial direction of the turntable 501, the lever 502 is fixed on the sliding seat 504, and the adjusting screw 505 is rotatably disposed in the groove 5011 and threadedly connected to the sliding seat 504.

[0031] In the above embodiments, by rotating the adjusting screw 505 in threaded engagement with the sliding seat 504, the sliding seat 504 can be driven to slide radially along the turntable 501, thereby adjusting the eccentric distance of the lever 502 and changing the vertical reciprocating stroke of the mounting frame 20. It can be understood that the smaller the eccentric distance of the lever 502, the smaller the vertical reciprocating stroke of the mounting frame 20; the larger the eccentric distance of the lever 502, the larger the vertical reciprocating stroke of the mounting frame 20. For plastic particles with different moisture contents and different sizes, the stroke size can be flexibly adjusted, so that the device can adapt to the needs of lightly dispersing fine particles and low-moisture plastic particles, as well as the needs of fully dispersing coarse particles and high-moisture plastic particles, thus improving the practicality of the device. The stroke adjustment can be achieved by rotating the adjusting screw 505 without disassembling equipment parts, making operation convenient, time-saving, and labor-saving. Operators can quickly adjust according to the dryness of the site, improving work efficiency.

[0032] Please see Figure 1 , Figure 2 and Figure 6 In one embodiment, the hopper 30 further includes a discharge mechanism, which includes a spring 302, a baffle 303, and a second transmission assembly. The drying tube 10 is slidably inserted vertically into the feed inlet 1. Both sides of the drying tube 10 are connected to the feed inlet 1 by springs 302. The springs 302 are used to provide upward support force for the drying tube 10. Two sets of baffles 303 are slidably disposed at the bottom of the discharge outlet 301. The second transmission assembly connects the drying tube 10 and the two sets of baffles 303 and is used to drive the two sets of baffles 303 to move closer or further away from each other when the drying tube 10 slides downward or upward.

[0033] In the above embodiment, initially, the two sets of baffles 303 are relatively far apart from the fully open discharge port 301. During the drying process of the plastic granules in the drying tube 10, if too many plastic granules accumulate inside the drying tube 10, the drying tube 10 moves downwards under gravity, causing the spring 302 to compress and contract. This downward movement of the drying tube 10 drives the two sets of baffles 303 to move closer together via the second transmission assembly. This gradual movement of the two sets of baffles 303 gradually blocks the discharge port 301, thereby reducing the discharge volume from the discharge port 301. Conversely, when the plastic granules in the drying tube 10... When the amount of plastic particles decreases, the reaction force of the spring 302 causes the drying tube 10 to move upward. The upward movement of the drying tube 10 drives the two sets of baffles 303 to move away from each other through the second transmission component. The relative movement of the two sets of baffles 303 gradually opens the discharge port 301, thereby increasing the discharge volume of the discharge port 301. This makes it easier to adjust the discharge speed of the discharge port 301 synchronously according to the accumulation of plastic particles in the drying tube 10, avoiding the drying tube 10 from being blocked due to excessively fast discharge, or the drying efficiency from being affected by excessively slow discharge. Moreover, no additional power mechanism is required, thus reducing energy consumption.

[0034] Specifically, in the above embodiment, guide posts 11 are provided on both sides of the feed inlet 1, and connecting sleeves 104 are provided on both sides of the drying tube 10. The two sets of connecting sleeves 104 are vertically slidably sleeved on the two sets of guide posts 11, and the two sets of springs 302 are respectively sleeved on the two sets of guide posts 11, with their ends abutting against the feed inlet 1 and the connecting sleeves 104 respectively. The guide posts 11 guide the extension and retraction of the springs 302, improving the stability and service life of the extension and retraction of the springs 302.

[0035] Based on the above embodiments, the second transmission assembly further includes a bidirectional screw 304, a first gear 305, and a first rack 306; the bidirectional screw 304 is rotatably disposed around the discharge port 301, and its two ends are threadedly connected to two sets of baffles 303 respectively; the first gear 305 is coaxially disposed at one end of the bidirectional screw 304; the first rack 306 is disposed around the drying tube 10 and meshes with the first gear 305.

[0036] In the above embodiment, when the drying tube 10 moves downward, the first rack 306 moves downward, causing the first gear 305 to rotate, which in turn drives the bidirectional screw 304 to rotate. The rotation of the bidirectional screw 304 causes the two sets of baffles 303 to move closer to each other. Conversely, when the drying tube 10 moves upward, the first rack 306 moves upward, causing the first gear 305 to rotate in the opposite direction, which in turn drives the bidirectional screw 304 to rotate in the opposite direction. The rotation of the bidirectional screw 304 causes the two sets of baffles 303 to move further apart. This facilitates the synchronous movement of the two sets of baffles 303 towards or away from each other when the drying tube 10 moves downward or upward.

[0037] Please see Figure 3 , Figure 6 , Figure 7 In one embodiment, the discharge mechanism further includes an anti-blocking component, which includes a stirring rod 307 and a third transmission component. The stirring rod 307 is rotatably disposed in the discharge port 301. The third transmission component connects the drying tube 10 and the stirring rod 307 and is used to convert the movement of the drying tube 10 into the rotation of the stirring rod 307.

[0038] In the above embodiments, when the drying tube 10 moves downward or upward due to the accumulation of plastic particles, the drying tube 10 drives the stirring rod 307 to rotate through the third transmission component. The rotation of the stirring rod 307 can effectively prevent the plastic particles from forming a "bridge" or blockage at the discharge port 301, ensuring smooth discharge and further ensuring the continuity of the drying operation. Moreover, no additional power mechanism is required, reducing energy consumption.

[0039] Based on the above embodiments, the third transmission component further includes a second gear 308 and a second rack 309. The second gear 308 is coaxially mounted on one end of the stirring rod 307, and the second rack 309 is disposed around the drying tube 10 and meshes with the second gear 308. When the drying tube 10 moves, it drives the second rack 309 to move, which in turn drives the second gear 308 to rotate the stirring rod 307, making it convenient to drive the stirring rod 307 to rotate.

[0040] The specific implementation method of the above-mentioned plastic granule drying device is as follows: Plastic granules fall into the drying tube 10 from the discharge port 301 at the bottom of the hopper 30. They fall in a zigzag pattern along the baffle channel 203 formed by multiple sets of guide plates 202, effectively extending the descent path of the plastic granules and thus prolonging the drying time. Simultaneously, hot air enters the distribution chamber 101 within the wall of the drying tube 10 through the air inlet pipe 102, and then is evenly blown onto the plastic granules within the baffle channel 203 through multiple sets of air outlets 103. This ensures uniform hot air distribution and avoids drying dead zones. At the same time, the motor 50 drives the turntable 501 to rotate. The eccentric lever 502 on 501 slides within the slot 503 of the mounting frame 20, which drives the mounting frame 20 to move back and forth. The reciprocating movement of the mounting frame 20 drives the guide plate 202 to move back and forth. The reciprocating movement of the guide plate 202 and its collision with the plastic particles can break up and throw the plastic particles, which can prevent the plastic particles from blocking each other, facilitate the all-round contact between the hot air and the plastic particles, and further extend the falling time of the plastic particles. At the same time, it can also effectively avoid blockage, thereby improving the drying efficiency and effect, as well as the continuity of the drying operation.

[0041] Secondly, when the plastic particles fall onto the guide plate 202, excess water will adhere to the surface of the guide plate 202 and flow downwards along it. The water inlet trough 205 at the lower end of the guide plate 202 can collect this water in time. After the water flows into the collection trough 204, the sponge 401 can absorb the water in the collection trough 204, effectively preventing the water in the collection trough 204 from spilling due to shaking and bumping when the mounting frame 20 moves back and forth. This prevents the spilled water from contacting the plastic particles and causing them to become damp again. At the same time, when the mounting frame 20 moves up and down, it drives multiple sets of transmission... The moving rod 403 moves up and down reciprocally. The multiple sets of transmission rods 403 move up and down reciprocally. Through the cooperation of the pivot shaft and the wave guide groove 404, the multiple sets of transmission rods 403 can move back and forth relative to the guide plate 202, thereby driving the pressure plate 40 to move back and forth to squeeze the sponge 401. This squeezes out the water absorbed by the sponge 401 and introduces it into the guide pipe 206. Then, it is introduced into the confluence channel 207 in the mounting rod 201 through the guide pipe 206, and finally discharged out of the drying tube 10 through the drain pipe 208. This effectively avoids excess water from re-adhering to the plastic particles and causing secondary damping, and further improves the drying effect and efficiency.

[0042] Furthermore, during the drying process of plastic granules in the drying tube 10, if too many plastic granules accumulate inside the drying tube 10, the drying tube 10 moves downward under the influence of gravity, causing the spring 302 to compress and contract. This downward movement of the drying tube 10 drives the first rack 306 downward and rotates the first gear 305, which in turn drives the bidirectional screw 304 to rotate. The rotation of the bidirectional screw 304 causes the two sets of baffles 303 to move closer together, gradually blocking the discharge port 301 and reducing the discharge volume. Conversely, when the number of plastic granules in the drying tube 10 decreases, the spring 302... The reaction force causes the drying tube 10 to move upward. The upward movement of the drying tube 10 drives the first rack 306 to move upward and drives the first gear 305 to rotate in the opposite direction. This, in turn, drives the bidirectional screw 304 to rotate in the opposite direction. The reverse rotation of the bidirectional screw 304 drives the two sets of baffles 303 to move away from each other. As the two sets of baffles 303 move away from each other, the discharge port 301 is gradually opened, thereby increasing the discharge volume of the discharge port 301. This makes it easier to adjust the discharge speed of the discharge port 301 synchronously according to the accumulation of plastic particles in the drying tube 10, avoiding the drying tube 10 from being blocked due to excessively fast discharge or the drying efficiency being affected by excessively slow discharge. Moreover, no additional power mechanism is required, thus reducing energy consumption.

[0043] Meanwhile, when the drying tube 10 moves, the drying tube 10 drives the second rack 309 to move, which in turn drives the second gear 308 to rotate the stirring rod 307. The rotation of the stirring rod 307 can effectively prevent plastic particles from forming a "bridge" or blockage at the discharge port 301, ensuring smooth discharge and further ensuring the continuity of the drying operation. Moreover, no additional power mechanism is required, reducing energy consumption.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A plastic granule drying device, characterized in that, include: A drying pipe (10) is connected to the feed inlet (1) of the storage silo; a diversion cavity (101) is opened in the circumferential direction inside the wall of the drying pipe (10), and an air inlet pipe (102) connected to the diversion cavity (101) is provided on the outside. Multiple sets of air outlets (103) connected to the diversion cavity (101) are opened in the circumferential and vertical directions inside the cavity. The mounting bracket (20) is vertically slidably installed inside the drying tube (10). The mounting bracket (20) has mounting rods (201) at the bottom of both sides. Multiple sets of inclined guide plates (202) are vertically spaced on both sets of mounting rods (201). The multiple sets of guide plates (202) on both sides have opposite inclination directions and are alternately staggered at their low ends to form a baffle channel (203) in conjunction with the inner cavity of the drying tube (10). A moving mechanism, disposed on the drying tube (10) and connected to the mounting frame (20), is used to drive the mounting frame (20) to reciprocate; and A hopper (30) is provided on the storage bin, and the discharge port (301) at the bottom of the hopper (30) is located above the uppermost guide plate (202).

2. The plastic granule drying device according to claim 1, characterized in that, Each of the multiple sets of guide plates (202) has a collection trough (204) at its lower end. Each of the multiple sets of guide plates (202) has a water inlet trough (205) at its lower top surface that communicates with the collection trough (204). Each of the multiple sets of guide plates (202) has a guide pipe (206) at its lower end that is inclined in opposite directions and communicates with the bottom surface of the collection trough (204). Each of the two sets of mounting rods (201) has a vertically arranged confluence channel (207) that communicates with the bottom end of the multiple sets of guide pipes (206). The bottom ends of the two sets of confluence channels (207) are connected by a drain pipe (208), and one end of the drain pipe (208) extends to the outside of the drying pipe (10).

3. The plastic granule drying device according to claim 2, characterized in that, It also includes a spill prevention mechanism, which includes a pressure plate (40), a sponge (401) and a first transmission assembly. The pressure plate (40) is slidably arranged in multiple sets of the collection tanks (204), and the sponge (401) is arranged on the bottom surface of multiple sets of the collection tanks (204). The two sides of the sponge (401) abut against the pressure plate (40) and the side wall of the collection tank (204) respectively. The first transmission assembly connects the inner cavity of the drying tube (10) and the multiple sets of the pressure plates (40) to convert the reciprocating movement of the mounting frame (20) into the reciprocating movement of the pressure plate (40).

4. The plastic granule drying device according to claim 3, characterized in that, The first transmission assembly includes a guide plate (402) and a transmission rod (403); both sets of mounting rods (201) have a receiving groove (2011) on their opposite sides; the inner cavity of the drying tube (10) is provided with guide plates (402) located in the receiving grooves (2011) on both opposite sides; both sets of guide plates (402) have a wave guide groove (404) extending in the vertical direction; the transmission rod (403) is slidably passed through the multiple sets of guide plates (202); one end of the transmission rod (403) is connected to the pressure plate (40), and the other end is slidably set in the wave guide groove (404) through a pivot.

5. A plastic granule drying device according to claim 1, characterized in that, The moving mechanism includes a motor (50), a turntable (501), a lever (502), and a groove (503); the motor (50) is located outside the drying tube (10), and the turntable (501) is coaxially arranged at the output end. One end of the turntable (501) extends into the inner cavity of the drying tube (10), and the lever (502) is eccentrically arranged. The groove (503) is horizontally opened on one side of the mounting bracket (20), and the lever (502) is slidably arranged in the groove (503).

6. A plastic granule drying device according to claim 5, characterized in that, The moving mechanism further includes an adjustment component, which includes a sliding seat (504) and an adjustment screw (505); one end of the turntable (501) is provided with a slide groove (5011), the sliding seat (504) is slidably disposed in the slide groove (5011) along the radial direction of the turntable (501), the lever (502) is fixed on the sliding seat (504), and the adjustment screw (505) is rotatably disposed in the slide groove (5011) and threadedly connected to the sliding seat (504).

7. A plastic granule drying device according to claim 1, characterized in that, The hopper (30) also includes a discharge mechanism, which includes a spring (302), a baffle (303), and a second transmission assembly. The drying tube (10) slides vertically through the feed inlet (1). Both sides of the drying tube (10) are connected to the feed inlet (1) by the spring (302). The spring (302) is used to provide an upward supporting force for the drying tube (10). Two sets of baffles (303) are slidably arranged at the bottom of the discharge port (301). The second transmission assembly connects the drying tube (10) and the two sets of baffles (303) and is used to drive the two sets of baffles (303) to move closer or further away from each other when the drying tube (10) slides downward or upward.

8. A plastic granule drying device according to claim 7, characterized in that, The second transmission assembly includes a bidirectional screw (304), a first gear (305), and a first rack (306); the bidirectional screw (304) is rotatably disposed on the periphery of the discharge port (301), and both ends are threadedly connected to two sets of baffles (303) respectively. The first gear (305) is coaxially disposed on one end of the bidirectional screw (304), and the first rack (306) is disposed on the periphery of the drying tube (10) and meshes with the first gear (305).

9. A plastic granule drying device according to claim 7, characterized in that, The discharge mechanism also includes an anti-blocking component, which includes a stirring rod (307) and a third transmission component. The stirring rod (307) is rotatably disposed in the discharge port (301). The third transmission component connects the drying tube (10) and the stirring rod (307) to convert the movement of the drying tube (10) into the rotation of the stirring rod (307).

10. A plastic granule drying device according to claim 9, characterized in that, The third transmission assembly includes a second gear (308) and a second rack (309). The stirring rod (307) is coaxially provided with the second gear (308) at one end, and the second rack (309) is provided on the periphery of the drying tube (10) and meshes with the second gear (308).

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