Hot air dryer for plastic particles

Abstract

The utility model discloses a hot air dryer for plastic particles, which relates to the technical field of plastic particle drying and comprises an equipment shell and a material conveying structure, the equipment shell comprises a drying cylinder, a support frame fixedly mounted on the surface of the drying cylinder and a feeding structure arranged on the surface of the drying cylinder, and the material conveying structure is arranged in the drying cylinder. The device comprises a material lifting assembly and a material dispersing assembly, according to the hot air dryer for the plastic particles, the material conveying structure is arranged, the plastic particles are lifted to the top from the bottom of the conveying pipe through the material conveying structure and slowly fall after being dispersed by the spiral flow guide plate, circulation flow is formed, accumulation is prevented, drying uniformity is ensured, the spiral flow guide plate slows down the falling speed of the particles, and the contact time of the particles and hot air is prolonged; and a circulating conveying mechanism allows the materials to pass through a hot air area for multiple times in single-time drying, so that the single-time treatment capacity is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic particle drying, specifically to plastic particle hot -air drying machine. BACKGROUND

[0002] Plastic particles are plastic material species, common general plastics, engineering plastics, special plastics etc., and the plastic dryer can quickly and uniformly dry plastic particles, and the uniformly dried plastic particles are more stable in the processing process, and the production interruption and the scrap rate caused by uneven moisture are reduced.

[0003] China authorized announcement No. CN218329199U discloses a kind of plastic particle drying hopper dryer, including support frame, discharge pipe is arranged in the middle of support frame, material hopper is arranged on the upper surface of discharge pipe, drying barrel is arranged on the upper surface of material hopper, inner hopper is arranged in the inside of drying barrel, air guide opening is formed in the center of inner hopper, air outlet is arranged in the lower portion of air guide opening, isolation net is arranged on the surface of air outlet, air guide pipe is fixedly connected to the lower surface of air outlet, air guide pipe is bent 90 degrees and extends through discharge pipe, then bend 90 degrees upwards and extend upwards, hot air generator is arranged at the end of air guide pipe.Through the above technical scheme, the problem of waste of a large amount of heat energy and time difference of different humidity materials in the prior art is solved.

[0004] But the device has the following defects when in use: the device needs to rely on wind to blow particles to roll, so a large amount of particle flow space must be reserved in the drying cylinder, which will reduce the single processing capacity.For the above defects: therefore, we propose a kind of plastic particle hot -air drying machine. UTILITY MODEL CONTENT

[0005] The utility model aims at providing plastic particle hot -air drying machine to solve the problems in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: plastic particle hot -air drying machine, including:

[0007] Device shell, the device shell includes drying cylinder, support frame is fixedly installed on the surface of drying cylinder, and feeding structure is arranged on the surface of drying cylinder;

[0008] Material conveying structure, the material conveying structure is arranged in the inside of drying cylinder, and it includes material lifting assembly and material dispersion assembly;

[0009] The material lifting assembly comprises a conveying pipe fixedly installed on the inner top wall of the drying cylinder, a spiral conveying auger rotatably installed on the inner top wall of the conveying pipe, and a motor fixedly installed on the upper end of the drying cylinder, and the surface of the conveying pipe is provided with an inlet and an outlet, the inlet is arranged near the bottom of the drying cylinder, the outlet is arranged near the top of the drying cylinder, and the conveying pipe is vertically arranged, with the lower end extending to the bottom of the drying cylinder and penetrating out of the drying cylinder.

[0010] The material dispersion assembly comprises a spiral guide plate fixedly installed on the inner side wall of the drying cylinder, and the other side of the spiral guide plate is fixedly connected with the surface of the conveying pipe.

[0011] Preferably, the lower end of the conveying pipe is rotatably connected with a blocking plate, and a lock catch is arranged between the blocking plate and the conveying pipe.

[0012] Preferably, the feeding structure comprises a feeding pipe fixedly installed on the surface of the drying cylinder, a feeding tube fixedly installed on the surface of the feeding pipe, and a feeding frame fixedly installed on the upper end of the feeding tube, and the surface of the feeding tube is provided with a valve.

[0013] Preferably, the end of the feeding pipe away from the drying cylinder is fixedly installed with a heat source fan.

[0014] Preferably, the shaft end of the motor is fixedly connected with the shaft end of the spiral conveying auger.

[0015] Preferably, the upper end of the drying cylinder is fixedly installed with an exhaust fan, and the air inlet end of the exhaust fan extends to the inside of the drying cylinder.

[0016] Preferably, the starting end of the spiral guide plate is below the outlet, and the terminal end of the spiral guide plate is above the inlet.

[0017] Preferably, one end of the feeding pipe extends to the inside of the drying cylinder and is located at the terminal end of the spiral guide plate.

[0018] The plastic particle hot air dryer is provided with a material conveying structure, which lifts the plastic particles from the bottom to the top of the conveying pipe, and the particles fall slowly after being dispersed by the spiral guide plate, forming a circulating flow, preventing accumulation and ensuring uniform drying, and the spiral guide plate slows down the falling speed of the particles, prolongs the contact time with hot air, improves the heat utilization rate and drying efficiency, and the circulating conveying mechanism allows the material to pass through the hot air area multiple times in a single drying process, significantly improving the single processing capacity.

[0019] The plastic particle hot air dryer is provided with a feeding structure, a heat source fan generates a high-speed airflow through the feeding pipe, forming a local negative pressure area at the inlet of the feeding tube, and using adsorption force to assist material flow, so that the plastic particles can be prevented from being blocked, and the valve can prevent hot air leakage when closed. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a three-dimensional structure schematic view of the utility model;

[0021] Fig. 2 It is a side sectional structure schematic view of the utility model feeding pipe;

[0022] Fig. 3 It is a side sectional structure schematic view of the utility model equipment shell.

[0023] In the drawing: 10 drying cylinder, 11 support frame, 20 conveying pipe, 21 spiral conveying auger, 22 motor, 23 feeding inlet, 24 discharging outlet, 30 spiral guide plate, 40 plugging plate, 50 feeding pipe, 51 feeding pipe, 52 feeding frame, 60 heat source fan, 70 exhaust fan. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figs. 1-3 The utility model provides a technical scheme: plastic particle hot air dryer, include: equipment shell and material conveying structure.

[0026] The equipment shell includes a drying cylinder 10, a support frame 11 fixedly installed on the surface of the drying cylinder 10, and a feeding structure arranged on the surface of the drying cylinder 10. The support frame 11 is used to support the drying cylinder 10. The feeding structure includes a feeding pipe 50 fixedly installed on the surface of the drying cylinder 10, a feeding pipe 51 fixedly installed on the surface of the feeding pipe 50, and a feeding frame 52 fixedly installed on the upper end of the feeding pipe 51. One end of the feeding pipe 51 is in communication with the inside of the feeding pipe 50. A valve is arranged on the surface of the feeding pipe 51. A heat source fan 60 is fixedly installed on the end of the feeding pipe 50 away from the drying cylinder 10. After opening the valve, the plastic particles are poured into the feeding frame 52. Then the heat source fan 60 is driven. The plastic particles in the feeding frame 52 will enter the feeding pipe 50 along the feeding pipe 51. The plastic particles entering the feeding pipe 50 are blown into the drying cylinder 10 by the heat source fan 60. After the heat source fan 60 passes through the feeding pipe 50, the high-speed airflow passing through the feeding pipe 50 will form a local negative pressure area at the inlet of the feeding pipe 51, generating adsorption force to assist material flow. Thus, the plastic particles can be prevented from being blocked in the feeding pipe 51. Closing the valve can prevent hot air from being discharged along the feeding pipe 51.

[0027] The material conveying structure is arranged inside the drying cylinder 10, which comprises a material lifting assembly and a material dispersion assembly. The material lifting assembly comprises a conveying pipe 20 fixedly installed on the top wall inside the drying cylinder 10, a spiral conveying auger 21 rotatably installed on the top wall inside the conveying pipe 20, and a motor 22 fixedly installed on the upper end of the drying cylinder 10. The surface of the conveying pipe 20 is respectively provided with a feeding port 23 and a discharging port 24. The conveying pipe 20 is vertically arranged, and the lower end thereof extends to the bottom of the drying cylinder 10 and penetrates out of the drying cylinder 10. The lower end of the conveying pipe 20 is rotatably connected with a blocking plate 40, and a lock catch is arranged between the blocking plate 40 and the conveying pipe 20. The lock catch is a prior art, and the blocking plate 40 can block the lower end of the conveying pipe 20 by using the lock catch. Therefore, no further description is given.

[0028] The shaft end of the motor 22 is fixedly connected with the shaft end of the spiral conveying auger 21. The feeding port 23 is arranged close to the bottom of the drying cylinder 10, and the discharging port 24 is arranged close to the top of the drying cylinder 10. The driving motor 22 can drive the spiral conveying auger 21 to rotate. When the plastic particles enter the drying cylinder 10, the plastic particles will enter the conveying pipe 20 through the feeding port 23. Then, the plastic particles can be driven to move upwards along the conveying pipe 20 by the rotating spiral conveying auger 21 and discharged from the discharging port 24.

[0029] The material dispersion assembly comprises a spiral flow guide plate 30 fixedly installed on the inner side wall of the drying cylinder 10, and the other side of the spiral flow guide plate 30 is fixedly connected with the surface of the conveying pipe 20. The starting end of the spiral flow guide plate 30 is below the discharging port 24, and the terminal end of the spiral flow guide plate 30 is above the feeding port 23. One end of a feeding pipe 50 extends to the inside of the drying cylinder 10 and is located at the terminal end of the spiral flow guide plate 30. When the plastic particles are discharged from the discharging port 24, the plastic particles will be dispersed and fall onto the spiral flow guide plate 30. At this time, the hot air generated by a heat source fan 60 will flow upwards along the spiral flow guide plate 30 and contact the falling plastic particles. The spiral flow guide plate 30 can slow down the falling speed of the plastic particles and increase the contact time of the plastic particles with the hot air, thereby improving the drying efficiency.

[0030] Compared with the prior art, the device can convey the plastic particles in the drying cylinder 10 upwards along the conveying pipe 20 by using the material conveying structure, and the plastic particles can be dispersed and then fall back to the bottom of the drying cylinder 10 by using the material dispersion structure. Then, the plastic particles are conveyed upwards by the material conveying structure again. The reciprocating circulation can avoid the accumulation of materials and cause uneven drying, and also improves the processing capacity of single drying.

[0031] An exhaust fan 70 is fixedly installed on the upper end of the drying cylinder 10, and the air inlet end of the exhaust fan 70 extends to the inside of the drying cylinder 10. The exhaust fan 70 is connected with an external waste gas treatment system. The wet and hot air in the drying cylinder 10 can be discharged by opening the exhaust fan 70.

[0032] The operation method of the mechanism is as follows:

[0033] Opening the valve of the feeding pipe 51, the plastic particles enter the feeding pipe 50 from the feeding frame 52, the high-speed hot air driven by the heat source fan 60 blows the particles into the drying cylinder 10, and the negative pressure effect assists the smooth conveying of the material;

[0034] Material lifting:

[0035] The motor 22 drives the spiral conveying auger 21 to rotate, and the plastic particles at the bottom of the drying cylinder 10 are lifted along the conveying pipe 20 from the feeding port 23 to the top discharging port 24 by the motor 22;

[0036] Dispersion and drying:

[0037] The particles fall into the spiral guide plate 30 from the discharging port 24 and slowly fall along the spiral path under the action of gravity; the hot air of the heat source fan 60 flows upward against the particles, fully contacts the particles and evaporates the moisture, and the structure of the spiral guide plate 30 prolongs the heat exchange time;

[0038] Circulation and moisture removal:

[0039] The particles fall into the spiral guide plate 30 from the discharging port 24 and slowly fall along the spiral path under the action of gravity; the hot air of the heat source fan 60 flows upward against the particles, fully contacts the particles and evaporates the moisture, and the structure of the spiral guide plate 30 prolongs the heat exchange time;

[0040] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A hot air dryer for plastic granules, characterized in that, include: The equipment housing includes a drying cylinder (10), a support frame (11) fixedly installed on the surface of the drying cylinder (10), and a feeding structure disposed on the surface of the drying cylinder (10); A material conveying structure is provided inside the drying cylinder (10), which includes a material lifting component and a material dispersing component; The material lifting assembly includes a conveying pipe (20) fixedly installed on the top wall inside the drying cylinder (10), a spiral conveying auger (21) rotatably installed on the top wall inside the conveying pipe (20), and a motor (22) fixedly installed on the upper end of the drying cylinder (10). The surface of the conveying pipe (20) is provided with a feed inlet (23) and a discharge outlet (24). The feed inlet (23) is located near the bottom of the drying cylinder (10), and the discharge outlet (24) is located near the top of the drying cylinder (10). The conveying pipe (20) is vertically installed, with its lower end extending to the bottom of the drying cylinder (10) and passing through the drying cylinder (10). The material dispersion component includes a spiral guide plate (30) fixedly installed on the inner wall of the drying cylinder (10), and the other side of the spiral guide plate (30) is fixedly connected to the surface of the conveying pipe (20).

2. The hot air dryer for plastic granules according to claim 1, characterized in that: The lower end of the conveying pipe (20) is rotatably connected to a sealing plate (40), and a locking buckle is provided between the sealing plate (40) and the conveying pipe (20).

3. The hot air dryer for plastic granules according to claim 1, characterized in that: The feeding structure includes a feeding pipe (50) fixedly installed on the surface of the drying cylinder (10), a feeding pipe (51) fixedly installed on the surface of the feeding pipe (50), and a feeding frame (52) fixedly installed on the upper end of the feeding pipe (51). A valve is provided on the surface of the feeding pipe (51).

4. The hot air dryer for plastic granules according to claim 3, characterized in that: A heat source fan (60) is fixedly installed at the end of the feeding pipe (50) away from the drying cylinder (10).

5. The hot air dryer for plastic granules according to claim 1, characterized in that: The shaft end of the motor (22) is fixedly connected to the shaft end of the screw conveyor (21).

6. The hot air dryer for plastic granules according to claim 1, characterized in that: An exhaust fan (70) is fixedly installed at the upper end of the drying cylinder (10), and the air inlet of the exhaust fan (70) extends into the interior of the drying cylinder (10).

7. The hot air dryer for plastic granules according to claim 1, characterized in that: The starting end of the spiral guide plate (30) is below the discharge port (24), and the end of the spiral guide plate (30) is above the feed port (23).

8. The hot air dryer for plastic granules according to claim 3, characterized in that: One end of the feeding pipe (50) extends into the interior of the drying cylinder (10) and is located at the end of the spiral guide plate (30).

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