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Rotary Drum Drying
The tumble dryer is mainly composed of a rotating body, a lifting plate, a transmission device, a supporting device and a sealing ring. The utility model has the advantages of reasonable structure, excellent production, high output, low energy consumption and convenient operation. The working principle of the tumble dryer: the dry wet material is sent to the hopper by a belt conveyor or a bucket elevator, and then enters the feeding end through the feeding pipe through the feeding machine of the hopper.
The material is added from the higher end, the heat carrier enters from the lower end, and is in countercurrent contact with the material, and the heat carrier and the material are simultaneously flowed into the cylinder.
As the rotating material of the cylinder is moved by gravity to the lower end. During the forward movement of the wet material in the cylinder body, the heat supply of the heat carrier is directly or indirectly obtained, so that the wet material is dried, and then sent out at the discharge end through a belt conveyor or a screw conveyor.
A copy board is arranged on the inner wall of the cylinder, and its function is to copy and sprinkle the material, so that the contact surface of the material and the air flow is increased to increase the drying rate and promote the advancement of the material.
The heat carrier is generally classified into hot air, flue gas, and the like. After the heating medium is dried, a cyclone is generally required to collect the materials in the gas. If you want to further reduce the dust content of the exhaust gas, you should also discharge it after passing the bag filter or wet dust collector.