HG series (single drum and double drum) drum roller scraper dryer

working principle

Drum dryer is an internal heating conduction type rotating continuous drying equipment. The rotating drum passes through its lower trough, and adheres to a thick material film. The heat is transported to the inner wall of the drum through the pipe, transferred to the outer wall of the drum, and then transferred to the feed film, so that the moisture in the material film is evaporated, dehumidified, and The moisture-containing material is dried. The dried material is shoveled away from the drum by the scraper installed on the surface of the drum, and reaches the screw conveyor under the scraper. The dried material is collected and packaged through the screw conveyor.

Performance characteristics

◎High thermal efficiency. Because the heat transfer mechanism of the drum dryer is heat conduction, the direction of heat transfer remains the same throughout the operating cycle. Except for cover heat dissipation and heat radiation loss, the rest of the heat is used for the evaporation of the moisture content of the tube material film, and the thermal efficiency can reach 70% -80%.

◎Great operating flexibility and wide applicability. Many drying factors of the drum dryer can be adjusted. Such as the concentration of the feed, the thickness of the coating material film, the temperature of the heating medium, and the rotation speed of the drum, etc., can change the drying efficiency of the drum dryer, and many factors are not related to each other. This brings great convenience to the drum drying operation, so that it can adapt to the drying of various materials and the requirements of different yields.
◎Short drying time. The drying cycle of materials is generally only 10-300 seconds, which is suitable for heat-sensitive materials. If the drum dryer is installed in a vacuum, it can be operated under reduced pressure.
◎High drying rate. Because the material film applied to the cylinder wall is very thin, generally 0.3-1.5mm, and the heat and mass transfer directions are consistent, the surface of the material film can maintain an evaporation strength of 20-70kg.H2O/m2.h.

installation

The installation of this machine is arranged according to the general drawing, the ground should be level, pressure gauge and safety valve should be installed at the steam pipe inlet, and the steam inlet flange connection should be firm.

Adapt to materials

◎Suitable for drying liquid or more viscous materials in chemical, dye, pharmaceutical, food, metallurgy and other industries.

maintain

◎Regularly check the rotation flexibility of the rotating parts and whether there is jamming. Grease should be added to the sprocket and other parts regularly, and the errors of measuring devices such as pressure gauges should be corrected regularly. If the V-belt transmission parts are severely worn, replace them in time.
◎For the maintenance of the motor and reducer, please refer to the operation and maintenance manual of the motor and reducer.

debugging

After the machine is installed, a trial run experiment should be carried out first
◎ Jog the main motor to observe the correct rotation of the main drum.
◎Observe whether the rotation of the main drum and each transmission component is flexible, observe whether the steam inlet and outlet are connected, and whether the pressure gauge is within the working pressure range.
◎Start the motor and the main drum runs smoothly. After the temperature rises, the material is added and the motor speed and the uniformity of the film on the drum are adjusted to control the final moisture content of the material.
◎Start the auger motor, output the dried finished materials, and adjust the auger motor speed according to the amount of dried finished product.

Technical specifications

Note: If the customer needs, we can design and manufacture the upper feed double drum dryer for the customer.

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