LH400B Centrifugal Dryer

Centrifugal dryers are also called a centrifugal spin dryer. They are typically used when parts are being dewatered and dried in bulk. The parts may be placed into an appropriate size basket which inserted into the dryer. The dryer is then closed, turned on, and spins the basket at a very high speed to force any liquid, oil, etc. to leave the parts. At the same time, the spinning action makes parts to dry. A heating unit or heating element will be installed in the dryer to make the drying process faster and easier.

Introduction to the type of LH-400B centrifugal dryer

The dryer is based on the principle of the centrifuge and hot air convection. To dry the workpieces rapidly, the dryer uses a motor to drive the belt. The stainless steel cylinder rotates, and most of the water is thrown off. The electric heating tube installed in the lid of the cylinder heats the air, then the formed thermal current heats the workpieces circularly. Using the brake pedal, the dryer can be stopped quickly after the workpieces have been dried completely and the production efficiency may be improved. Using the switch and dashpot relay, the dryer can prevent creepage, over-loading, and short circuit of the lines and the motor.

 

Operating Manual

  1. Before installation, firstly check the dryer to make sure that there is no damage to the related components and electric devices during transportation. Then, set the dryer on the ventilated place, making it balance and fastening.
  2. Turn on the power, try running it without loading for about 20 minutes. Check and make sure that the cylinder rotates according to the direction marked on the body of the cylinder. And make sure the electric heating tube and other components work well. After that, the dryer could be operated regularly.
  3. The lid should be closed when drying. Loading and unloading should be made when the power is off. To avoid the shaking of the body, the workpieces in the cylinder should be distributed uniformly. And, do not overload the workpieces. When drying the small workpieces with high density or that easily storing liquid, rotate the cylinder centrifugally for 1 to 2 minutes, take them out and vibrate to turnover the workpieces, then heat and dry, so the satisfying effect can be obtained.
  4. To prolong the life of the dryer, please stop the machine for 20 minutes after running for 45 minutes. Don’t run continuously.
  5. To stop the cylinder quickly, the brake pedal can be used. But the braking before stopping the motor is forbidden. The dryer can run centrifugally without heating, but cannot heat without the motor running.
  6. A worker should know the operating method to ensure safety. And he should lubricate the bearing with clean grease regularly to maintain the dryer well.
  7. Main technical data:
ModelLH-400B
Dimension of cylinder¢380×280
Volume of cylinder0.028 m3
Loading capacity of the cylinder28kg or 1/3 of capacity
Working temperature50℃-80℃
Speed of rotation536 r/min
Speed of motor1390 r/min
Working voltage220V  3Phs  60Hz
Motor capacity0.75kW
Capacity of the electric heating tube1.8kw
Dimension of machine780×600×750mm
Weight of machine161kg

1.Trouble shooting

TroubleReasonMethod
Not rotate1. Motor is burned out.Replace the motor
2. The circuit fails.Check the connection of switches and fuse
3. Belt is loosened and worn.Adjust the location of the motor or change the belt
Temperature

is deviant

1. The vane is reversing.Exchange the leg of the circuit to change the rotating direction of the motor
2. The electric heating tube is burned out.Replace the electric heating tube
3. The lead of the electric heating tube is burned out.Replace the load
Vibration or noise is too large1. The installation of the dryer is not steady.Reinstall the dryer firmly
2. The distribution of workpieces is uneven.Stop the dryer, redistribute the workpieces evenly
3. The bearing is short of grease or worn out, or the bolt is loosened.Put in enough high-temperature lubricating oil, or change the bearing and fasten the bolt.
Braking is failureThe skid is worn out.Replace the skid.

High temperature resistant lubricating grease
(1) Complex calcium lubricating grease

ZBE 36003-88

ZFG-2

ZFG-3

(2) No. 4 high temperature resistant lubricating grease

ZBE 36009-88

ZN6-4

1. Circuit diagram

Note: Once the incoming line breaches or the machine works unusually, the machine should be turned off and shut off the power supply, and let it be repaired by professional electricians. Never open the machine by yourself.

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