25-60kg/H Stainless Steel Rotary Flash Dryer Screw Feeding Industrial Drying Machine

Rotary flash dryer

Rotary flash dryer equipment principle
The hot air is tangentially entered into the flash main tower by the air inlet at the bottom of the main unit, and a spiral rising high-speed rotating air flow is formed in the main tower. At the same time, the size of the bottom annular gap is adjusted according to different material properties, so that the wind speed is in an appropriate state.
The material enters the drying tower directly through the screw feeder, and under the impact and driving of the high-speed airflow, it rapidly disperses and rotates with the airflow at a high speed. For relatively large and humid particles, the high-speed airflow is not enough to break and rotate at high speed, so it gradually falls under the action of gravity. When it falls to the bottom of the main machine, the crushing device placed at the bottom is forced to break and micronize, and then with the high-speed airflow. The rotation process is repeated to complete the drying process.

Technical parameters

Rotary flash dryer equipment process
The air is heated to about 180-300 ° C through the heater and enters the rotary flash dryer. The wet material is fed into the screw feeding mechanism by the conveying device, and the screw feeder can be steplessly regulated. After being extruded, the material is forced into the main tower, and then the blade is crushed at a high speed and has different angles. The high-temperature airflow entering the main tower at high speed impacts the high-speed rotation and the entrainment rises. At this time, the temperature of the airflow drops rapidly, and the moisture of the material evaporates rapidly. Thereby completing the drying process.
The dried material enters the pulse bag filter with high-speed high-temperature airflow. The airflow enters from the outside of the filter bag and is discharged upwards. In order to prevent the filter bag from accumulating, the pulse solenoid valve is used to input high-pressure airflow (0.4~0.6Mpa) from the upper part of each filter bag at regular intervals, and the filter bag is repeatedly backflushed to achieve the best dust removal. effect.

Rotary flash dryer equipment features
1. The tangential inlet air is adopted by the double air passage, which avoids the speed unevenness of the rotating field in the radial flow field.
2. Effectively control the final moisture and fineness, and control through the coordination of the swirling plate and the inlet air velocity.
3. The rotary blade has a unique arrangement structure with small wear, wide contact surface and large cutting force.
4. It is good at handling heat sensitive materials. The bottom of the main engine belongs to the high temperature zone. The gas velocity in this zone is high and there is a cooling water protection device to avoid material coking.
5. The system has small resistance, high thermal efficiency, good operating environment and low labor intensity.
6, the host uses a new type of sealing structure, the life cycle of the main bearing is extended and the bearing housing has an oil circulation cooling device.

Rotary flash dryer equipment application field
Organic substances: insecticidal, lauric acid, benzoic acid, benzoic acid, bactericidal Dan, sodium oxalate, cellulose acetate, organic pigments, etc.
Dyes: Black iron oxide, indigo pigment, butyric acid, titanium hydroxide, zinc sulfide, various azo dye intermediates.
Inorganic materials: kaolin, borax, calcium carbonate, hydroxide, copper sulfate, iron oxide, barium carbonate, antimony trioxide, cryolite, and the like.
Food: fermented soybean meal protein, bran probiotics, gelatinized starch, wine trough, wheat sugar, wheat starch, corn and maize starch, etc.