CN221793427U - Plastic granules drying circulation drying device - Google Patents

Abstract

A stirring motor is arranged in the bottom of a main body and is connected with a stirring rod in the main body, a plurality of air inlet holes are formed in the bottom of the main body, a plurality of electric heating pipes are arranged at the lower ends of the air inlet holes in the bottom of the main body, a fan is arranged in the lower end of the main body to blow air into the electric heating pipes, the fan blows heat generated by the electric heating pipes into the main body from the air inlet holes to blow and dry stirred plastic particles, a plurality of air outlets are formed in the upper end of the main body, a circulating air pipe is arranged around the air outlets and is connected with the lower end of the main body in series, hot air discharged from the air outlets is sucked into the circulating air pipe and then flows back into the fan, and the hot air is blown to the plastic particles stirred in the main body after being heated by the heating pipes again, so that the hot air generated by the heating pipes is prevented from being directly discharged and lost, the heat generated by the heating pipes can be partially recycled, the efficiency of the drying device is improved, and the energy consumption is saved.

Description

A plastic granule drying cycle drying device

Technical Field

The utility model relates to the field of plastic particle drying treatment in injection molding production, in particular to a plastic particle drying circulation drying device.

Background Art

When producing plastic products with high quality requirements, or when plastic particles are damp, it is necessary to dry the plastic particles to reduce the moisture in the plastic particles before the plastic particles can be put into the injection molding machine for injection molding to produce plastic products. If the plastic particles are damp and are not dried before being transported into the injection molding machine, the molded products will have water marks or bubbles, etc., which affects the quality of the products. In the injection molding process, the plastic particles are usually first placed in a drying oven or dryer for drying. After the plastic particles are dried, they are poured into the injection molding machine for use. When the drying oven or dryer removes moisture, it relies on the heating tube to heat and stir the plastic particles to evaporate excess moisture until the plastic particles are dried. However, it requires more electricity for heating and drying, which generates certain energy consumption and increases costs. If the drying device can be innovatively designed to improve the efficiency of the drying device and save energy, and the heat used to remove moisture from the plastic particles during drying can be recycled, the drying efficiency can be improved, electricity can be saved, and it is more convenient to use.

Summary of the invention

Plastic particles need to be dried before being put into an injection molding machine for injection molding to produce high-quality plastic products. The existing dryers need to consume more electricity for heating and drying, which results in certain energy consumption and increased costs. The utility model provides a plastic particle drying circulation drying device. The drying device is innovatively designed. A fan and an electric heating pipe are arranged at the bottom of the drying device. The fan blows hot air into the drying device to dry the stirred plastic particles. The hot air exhausted from the drying device flows back to the fan through the circulating air duct and blows toward the stirred plastic particles again. The heat generated by the drying heating pipe can be partially recycled, thereby improving the efficiency of the drying device and saving energy consumption.

The utility model adopts the following technical scheme: a plastic particle drying circulation drying device, comprising a main body, a lower end, a circulating air duct, a fan, an electric heating tube, and a stirring motor, a stirring motor is arranged at the bottom of the main body and connected with a stirring rod inside the main body, a plurality of air inlet holes are arranged at the bottom of the main body, a plurality of electric heating tubes are arranged at the lower end of the air inlet holes at the bottom of the main body, a fan is arranged at the lower end of the main body to blow air into the electric heating tube, the fan blows the heat generated by the electric heating tube into the main body from the air inlet holes to blow and dry the stirred plastic particles, a plurality of air outlets are arranged at the upper end of the main body, a circulating air duct is arranged around the air outlet and is connected in series with the lower end of the main body, the hot air discharged from the air outlet is sucked into the circulating air duct and then flows back into the fan, is heated by the heating tube again and then blown to the stirred plastic particles in the main body, so as to avoid direct discharge and loss of hot air during drying, realize partial recycling of the heat generated by the heating tube, improve the efficiency of the drying device and save energy consumption.

A return air hood is arranged around the upper air outlet of the main body to cover the air outlet, and circulating air ducts are arranged on both sides of the return air hood. The circulating air ducts are connected in series with the lower end of the main body. When the fan is started, a suction negative pressure will be generated around the return air hood, which can better absorb the hot gas flowing out from the periphery of the air outlet into the circulating air duct and flow back to the lower end for reheating. Thereafter, the hot gas is blown into the main body by the fan for circulation to blow and dry the stirred plastic particles.

Filter module fixing ports are arranged at the circulating air ducts at both ends of the return air hood, and filter modules are arranged in the filter module fixing ports. The filter modules can absorb and filter water vapor in the hot air, and can also filter dust and fine particles to prevent these impurities and water vapor from entering the plastic particles in the main body and affecting the quality of the plastic particles.

The filter module may be filter cotton, which can absorb water vapor in hot air; the filter module may be any one of an anhydrous copper sulfate adsorption block, a lime wool block, and a desiccant.

The return air hood is semi-closedly connected to the periphery of the upper air outlet of the main body, the upper end of the return air hood is sealedly connected to the upper end of the main body, and an opening is left between the lower end of the return air hood and the periphery of the main body. When the fan starts to suck hot air into the circulating air duct, the air around the air outlet can also be sucked in to increase the air intake.

The return air cover is completely closed and connected to the periphery of the upper air outlet of the main body. The return air cover covers all the air outlets, and all the hot gases blown out from the air outlets are circulated and sucked into the circulating air duct.

The air inlet hole at the bottom of the main body is a through hole with a diameter of 0.5-1.5MM, which is smaller than the outer dimensions of the plastic particles. The plastic particles cannot pass through the air inlet hole at the bottom of the main body, but the gas can enter the main body from the air inlet hole.

The lower end of the main body is conical, and a fan is arranged inside the lower end. The air outlets of the two circulating air ducts are located at the lower ends of the fans. When the fans rotate, the gas can be sucked into them with greater suction force.

A support frame is arranged around the main body, and the support frame supports the main body.

The lower end of the main body is provided with a discharge port, and the dried plastic particles inside can be discharged for use by opening the discharge port.

The discharge port at the lower end of the main body can be connected to a pump, and when the pump is started, the dried plastic particles in the main body can be automatically extracted into the storage barrel of the injection molding machine for use.

The stirring rod inside the main body is provided with a spiral rotating blade, and a plurality of through holes are provided in the rotating blade. The stirring rod can rotate to stir the plastic particles in the main body. The spiral rotating blade can make the stirring more uniform. The rotating blade is provided with a plurality of through holes to facilitate the upwardly flowing hot gas to fully contact with the plastic particles, thereby achieving a better drying effect.

An upper cover is arranged at the feed inlet at the upper end of the main body, and the upper cover can cover the feed inlet.

The beneficial effects of the utility model are as follows: a plastic particle drying circulation drying device, wherein a stirring motor is arranged at the bottom of the main body and connected with a stirring rod inside the main body, a plurality of air inlet holes are arranged at the bottom of the main body, a plurality of electric heating tubes are arranged at the lower ends of the air inlet holes at the bottom of the main body, a fan is arranged at the lower end of the main body to blow air into the electric heating tubes, and the fan blows the heat generated by the electric heating tubes into the main body from the air inlet holes to blow and dry the stirred plastic particles, a plurality of air outlets are arranged at the upper end of the main body, a circulating air duct is arranged around the air outlet and connected in series with the lower end of the main body, the hot air discharged from the air outlet is sucked into the circulating air duct and then flows back into the fan, and is heated by the heating tube again and then blown to the stirred plastic particles in the main body, thereby avoiding direct discharge and loss of hot air during drying, realizing partial recycling of the heat generated by the heating tube, improving the efficiency of the drying device and saving energy consumption.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a perspective view of a drying device;

Fig. 2 is an exploded view of the drying device;

Fig. 3 is a main body view of the drying device;

FIG4 is a view of the drying device without the circulating air duct and the supporting frame installed;

In the figure: 1. support frame, 2. main body, 3. lower end, 4. circulating air duct, 5. fan, 6. electric heating tube, 7. stirring motor, 8. stirring rod, 9. rotating blade, 10. return air hood, 11. filter module fixing port, 12. filter module, 13. suction pump, 14. upper cover, 15. air outlet.

DETAILED DESCRIPTION

In the embodiment shown in Figures 1-4, a plastic particle drying cycle drying device includes a main body 2, a lower end 3, a circulating air duct 4, a fan 5, an electric heating tube 6, and a stirring motor 7. The bottom of the main body 2 is provided with a stirring motor 7 connected to a stirring rod 8 in the main body 2. The bottom of the main body 2 is provided with a plurality of air inlet holes, and a plurality of electric heating tubes 6 are provided at the lower end of the air inlet holes at the bottom of the main body 2. The fan 5 is provided in the lower end 3 of the main body to blow air into the electric heating tube 6, and the fan 5 blows the heat generated by the electric heating tube 6 into the air from the air inlet hole. The stirred plastic particles are blown and dried in the main body 2. A plurality of air outlets 15 are provided at the upper end of the main body 2. A circulating air duct 4 is provided around the air outlet 15 and is connected in series with the lower end 3 of the main body 2. The hot air discharged from the air outlet 15 is sucked into the circulating air duct 4 and then flows back to the fan 5. It is heated by the heating tube 6 again and then blown toward the stirred plastic particles in the main body 2, so that the hot air is prevented from being directly discharged and lost during drying, so that the heat generated by the heating tube 6 can be partially recycled, thereby improving the efficiency of the drying device and saving energy.

A return air hood 10 is arranged around the upper air outlet 15 of the main body 2 to cover the air outlet 15. Circulating air ducts 4 are arranged on both sides of the return air hood 10. The circulating air duct 4 is connected in series with the lower end 3 of the main body 2. When the fan 5 is started, a suction negative pressure will be generated around the return air hood 10, which can better absorb the hot gas flowing out from the periphery of the air outlet 15 into the circulating air duct 4 and flow back to the lower end 3 for reheating. Thereafter, the hot gas is blown into the main body 2 by the fan 5 for circulation to blow and dry the stirred plastic particles.

A filter module fixing port 11 is provided at the circulating air duct 4 at both ends of the return air hood 10, and a filter module 12 is provided in the filter module fixing port 11. The filter module 12 can absorb and filter water vapor in the hot air, and can also filter dust and fine particles to prevent these impurities and water vapor from entering the plastic particles in the main body 2 and affecting the quality of the plastic particles.

The filter module 12 may be filter cotton, which can absorb water vapor in hot air; the filter module 12 may be any one of an anhydrous copper sulfate adsorption block, a lime wool block, and a desiccant.

The return air hood 10 is semi-closedly connected to the periphery of the upper air outlet 15 of the main body 2. The upper end of the return air hood 10 is sealedly connected to the upper end of the main body 2. An opening is left between the lower end of the return air hood 10 and the periphery of the main body 2. When the fan 5 starts to suck hot air into the circulating air duct 4, the air around the air outlet 15 can also be sucked in to increase the air intake.

The return air cover 10 is completely closed and connected to the periphery of the upper air outlet 15 of the main body 2 . The return air cover 10 covers all the air outlets 15 , and all the hot gases blown out from the air outlets 15 are circulated and sucked into the circulating air duct 4 .

The air inlet hole at the bottom of the main body 2 is a through hole with a diameter of 0.5-1.5MM, which is smaller than the outer dimensions of the plastic particles. The plastic particles cannot pass through the air inlet hole at the bottom of the main body 2, but the gas can enter the main body 2 from the air inlet hole.

The lower end of the main body 2 is conical, and a fan 5 is arranged inside the lower end. The air outlets of the two circulating air ducts 4 are located at the lower ends of the fans 5. When the fans 5 rotate, they can suck the gas into them with greater suction force.

A support frame 1 is disposed around the main body 2 , and the support frame 1 supports the main body 2 .

The lower end of the main body 2 is provided with a discharge port, and the dried plastic particles inside can be discharged for use by opening the discharge port.

The discharge port at the lower end of the main body 2 can be connected to a pump 13. When the pump 13 is started, the dried plastic particles in the main body 2 can be automatically extracted into the storage barrel of the injection molding machine for use.

The stirring rod 8 in the main body 2 is provided with a spiral rotating blade 9, and a plurality of through holes are provided in the rotating blade 9. The stirring rod 8 can rotate to stir the plastic particles in the main body 2. The spiral rotating blade 9 can make the stirring more uniform. The rotating blade 9 is provided with a plurality of through holes to facilitate the upwardly flowing hot gas to fully contact with the plastic particles, thereby achieving a better drying effect.

An upper cover 14 is provided at the feed inlet at the upper end of the main body 2, and the upper cover 14 can cover the feed inlet.

Claims (10)

1. The utility model provides a plastics granule drying cycle drying device, includes main part, lower tip, circulation tuber pipe, fan, electrothermal tube, agitator motor, its characterized in that: the stirring motor is arranged in the bottom of the main body and is connected with the stirring rod in the main body, a plurality of air inlet holes are formed in the bottom of the main body, a plurality of electric heating pipes are arranged at the lower end of the air inlet holes in the bottom of the main body, a fan is arranged in the lower end of the main body and blows air into the electric heating pipes to blow and dry stirred plastic particles from the air inlet holes, a plurality of air outlets are formed in the upper end of the main body, a circulating air pipe is arranged around the air outlets and is connected with the lower end of the main body in series, hot air discharged from the air outlets is sucked into the inside by the circulating air pipe and then flows back into the fan, and the hot air is heated by the heating pipe and then blown to the stirred plastic particles in the main body.

2. The plastic particle drying cycle drying device according to claim 1, wherein: the periphery of the air outlet at the upper end of the main body is provided with an air return cover the air outlet, two sides of the air return cover are provided with circulating air pipes, and the circulating air pipes are connected with the lower end part of the main body in series.

3. A plastic granule drying cycle drying apparatus according to claim 2, wherein: the circulating air pipes at two ends of the return air cover are provided with filter module fixing openings, and filter modules are arranged in the filter module fixing openings.

4. A plastic granule drying cycle drying apparatus according to claim 3, wherein: the filter modules at two ends of the return air cover are any one of filter cotton, anhydrous copper sulfate adsorption blocks, lime cotton blocks and drying agents.

5. A plastic granule drying cycle drying apparatus according to claim 3, wherein: the air return cover is in semi-closed connection with the periphery of the air outlet at the upper end of the main body, and an opening is reserved between the lower end part of the air return cover and the periphery of the main body.

6. The plastic particle drying cycle drying device according to claim 1, wherein: the air inlet hole at the bottom of the main body is a through hole with the diameter of 0.5-1.5 MM.

7. The plastic granule drying cycle drying apparatus according to claim 6, wherein: the lower end of the main body is conical, a fan is arranged in the lower end, and air outlets of the two circulating air pipes are positioned at the lower ends of the fans.

8. The plastic granule drying cycle and drying device according to claim 7, wherein: the periphery of main part is provided with the support frame, and the lower extreme of main part is provided with the discharge gate.

9. The plastic granule drying cycle drying apparatus as set forth in claim 8, wherein: the discharge port at the lower end of the main body is connected with the material pumping pump, and the dried plastic particles in the main body can be automatically pumped into the material storage cylinder of the injection molding machine for use when the material pumping pump is started.

10. A plastic granule drying cycle drying apparatus according to any one of claims 1-9, characterized in that: the puddler of main part the inside is provided with spiral rotary vane, is provided with a plurality of through-holes in the rotary vane, and the upper end feed inlet department of main part is provided with the upper cover, and the upper cover can be to the feed inlet closing.