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  Basic information about Hopper dryer equipment
product name:Hopper dryer
Product number:Hopper dryer-001
Product brand:Hengju
Unit of measurement:kg
Commodity weight:customizable
Patent:Hengju
Manufacturer: Dongguan Hengju Machinery Equipment Co., Ltd
Application:The hopper dryer can enter the right side of the drying tube with warm air through the air inlet pipe, pushing the plastic particles to accumulate to the left side of the drying tube, and then complete the lateral warm air entry through the air duct to complete the multi-angle drying of the plastic particles. To ensure the dryness and improve the quality of later injection molded parts, the structure of this device is relatively simple, the cost is relatively low, and it is suitable for popularization and use.
Alias:hopper dryer,hopper dehumidifier,hopper dehumidifying dryer
[Dehumidifying dryer]
  About the introduction of Hopper dryer equipment

Principle of Hopper dryer

The composition of the hopper dryer is: 
It includes a drying pipe, the right end of the drying pipe is connected with an air inlet pipe, the end of the air inlet pipe away from the drying pipe is connected with a heater, and a flange is connected between the heater and the air inlet. Tube plate, the top near the right side of the drying pipe is provided with a water outlet pipe. The end of the water outlet pipe away from the drying pipe is connected to the lower hopper. The lower hopper and the discharge pipe are matched with the first flange. The air inlet pipe is equipped with a bronchus pipe, which is arranged in the drying pipe. Before and after, the bronchus is connected to the air duct, and the air duct extends to the inside of the drying pipe. An exhaust pipe is arranged near the left side of the top of the drying pipe, and a filter is arranged in the exhaust pipe. An opening is provided at the left end. Drying tube. The end cover is closed, the end cover seals the drying tube, and the rotating shaft is installed between the end cover and the drying tube.
This device can realize the warm air entering from the right side of the drying pipe through the air inlet pipe, pushing the plastic particles to accumulate to the left side of the drying pipe, and then completing the lateral warm air entry through the air guide pipe to complete the multi-angle drying of the plastic particles to ensure Dryness improves the quality of later injection molded parts.
hopper dryer:
1. The high-performance hot air diffusion device is used to uniformly disperse the hot air, so that the drying temperature of the plastic is uniform and the drying efficiency is high..
2. There is a hot air tube curved design, which can prevent the powder layer from accumulating on the bottom of the electric heating tube and causing combustion.
3. The material barrel and internal parts are made of stainless steel, the material barrel is separated from the bottom, easy to clean, quick to change, and the raw materials are not polluted.
4. Various models can provide preheating timing device, microcomputer control and double-layer heat preservation barrel for selection.
5. The rapid change of material adopts full digital PID control, LED status display, can accurately control the temperature. There is an overheat protection device, which can reduce accidents caused by man-made or mechanical failures. The 380V model has a fan overload protector and a heat-insulated fan, which is extended Machine life; using a proportional deviation indicating thermostat to control the temperature.

Application of Hopper dryer


Hopper dryers are mainly used for plastics and plastic products, automobiles, CDs, experiments, communications, optics, etc.
The hopper dryer can enter the right side of the drying tube with warm air through the air inlet pipe, pushing the plastic particles to accumulate to the left side of the drying tube, and then complete the lateral warm air entry through the air duct to complete the multi-angle drying of the plastic particles. To ensure the dryness and improve the quality of later injection molded parts, the structure of this device is relatively simple, the cost is relatively low, and it is suitable for popularization and use.


Hopper dryer in injection molding application

hopper dryer,hopper dehumidifier,hopper dehumidifying dryer
Hopper dryer dehumidifies PET, PE, PA,PLA, TPE granules, PPO, PPO, PVC, PP and other plastic raw materials, as well as resin and plastic pellets or micro particles to achieve a drying effect;
Solve the problems of shrinkage, silver streaks, bubbles, cracks, flow marks, poor transparency and other phenomena in industrial plastic processing. The main reason for these poor quality is that the plastic is not sufficiently dried before molding.
We usually call this machine:hopper dryer,hopper dehumidifier,hopper dehumidifying dryer

Operation Guide for Hopper dryer

Correctly operating the dehumidification dryer and standardizing the operation of the dehumidification dryer can ensure the baking quality of raw materials, increase the service life of the machine, and protect the safety of operators.

Specification for operation steps of Hopper dryer
Method/Step
1.Open and close operation

Set all the current disconnect switches in the control box to the "ON" position, press the RUN/STOP [RUN/STOP] button on the control panel, the indicator will light up to start operation, press the RUN/STOP [RUN/STOP] button again during operation, The indicator light flashes slowly, cools down, and shuts down after 5 minutes of operation.
2. Setting of drying temperature

Press the mode switch [MOKE CHANGE] key twice, at this time the drying temperature setting display shows the ℃ unit symbol, press "△" to set the drying temperature.

3. one-time conveying material operation

Press the transport 1 to run/stop [LOADRI RUN/STOP] key. The material is sent from the storage bin to the drying barrel. At this time, the indicator light flashes quickly, when you press the transport 1 again to run/stop [LOADRI RUN/STOP] Press the key, the indicator light flashes slowly until it stops, when the indicator light does not flash, it means that the bucket is full.
4, the operation of the secondary conveying material
Press the transport 2 run/stop [LOADRI RUN/STOP] button, and the material will be sent from the drying bucket to the machine storage hopper. At this time, the indicator light flashes quickly, when you press the transport 2 run/stop [LOADRI RUN/STOP] again When the button is pressed, the indicator light flashes slowly until it stops. When the indicator light does not flash, it means that the bucket is full.
5, three conveying operations
The operation mode is the same as that of the secondary feeding, but the key is the transport 3 run/stop [LOADRI step RUN/STOP] key.
6, the delivery step specification
When the dehumidification dryer is automatically operated to transport materials from the storage box to the drying cylinder and from the drying cylinder to the hopper of the forming machine, you must first open the conveying 1 to keep the material in the drying cylinder full, and then press the conveying 2 (convey 3) to start drying The cylinder is fed to the hopper of the molding machine. When the material in the hopper is full, the sensor indicator light on the hopper is on, and the indicator light of conveying 2 (conveying 3) is on at the same time. If the indicator light on the hopper of the molding machine is off, conveying 2 (conveying 3) will automatically Feed material from the drying cylinder to the hopper of the forming machine until the indicator light is on.
7, alarm prompt
When an abnormality occurs in the dehumidification dryer, the alarm will sound and the abnormal code will be displayed in the monitor [MONITOR]. Press the power button to confirm the alarm and the alarm will stop. When the abnormality is eliminated, press the reset button [RESET] to eliminate the alarm code. 
 
Note for operation steps of Hopper dryer:
1. Make sure that the Hopper dryer has been installed and adjusted;
2. Turn on the power switch of the control box and the dehumidifier panel;
3. Check the temperature indication of the material barrel frequently, and repair it in time if any malfunction is found;
4. When the temperature rises to the specified temperature, check whether it is consistent with the temperature of the lower part;
5. Keep the barrel full at any time during production;
6. The raw material can be produced only after the specified drying time is fully reached;
7. When the drying is completed, when you want to stop, first close the feeding plate, and then close the feeding system after pumping the bottom raw materials;
8. Turn off all the run buttons on the operation interface and turn off the main power supply.
For the operation steps of the Hopper dryer , please read the operation manual carefully. In addition, please be careful not to touch the body of the desiccant dryer to avoid being burned when the Hopper dryer is running. In order to extend the life of the equipment, regular maintenance must also be carried out.