Hollow blade dryer hollow paddle dryer

Hollow blade dryer hollow paddle dryer

Introduction of Hollow blade dryer hollow paddle dryer

The hollow double-blade dryer can indirectly heat and dry the slurry, paste, granular and powdery materials. The equipment is an indirect heating and stirring type dryer, a jacket is set on the cylinder, the rotating shaft is hollow, and a hollow blade is set on the shaft and communicates with the hollow shaft. This design not only increases the use area per unit volume, but also strengthens the heat transfer process and improves the heat transfer efficiency. The shell of the paddle dryer is Ω-type, and there are generally two hollow stirring shafts in the shell. The shell has a sealed end cover and an upper cover to prevent the leakage of material dust and vaporized gas.

Application of Hollow blade dryer hollow paddle dryer

The wedge-shaped hollow blade dryer can indirectly heat or cool paste, granular, powder, and slurry materials, and can complete unit operations such as drying, cooling, heating, reaction, and low-temperature calcination. The wedge-shaped stirring heat transfer blade in the equipment has a high heat transfer efficiency and self-cleaning function of the heat transfer surface.

principle of Hollow blade dryer hollow paddle dryer

Wedge-shaped hollow blades are densely arranged on the hollow shaft, and the heat medium flows through the blades through the hollow shaft. The heat transfer area in the unit effective volume is large, and the temperature of the heating medium ranges from -40°C to 320°C. It can be steam or liquid: such as hot water, heat transfer oil, etc. Indirect conduction heating, no air is carried to take away the heat, and the heat is used to heat the material. The heat loss is only the heat dissipation to the environment through the insulation layer of the body. The heat transfer surface of the wedge-shaped blade has a self-cleaning function. The relative movement of the material particles and the wedge-shaped surface produces a scrubbing effect, which can wash off the attached material on the wedge-shaped surface, so that a clean heat transfer surface is always maintained during operation. The shell of the paddle dryer is W-shaped, and two to four hollow stirring shafts are generally arranged in the shell. The shell has a sealed end cover and an upper cover to prevent material dust from leaking out and collect material solvent vapor. A stop plate is set at the discharge port to ensure the height of the material level, so that the heat transfer surface is covered by the material to give full play to its effect. The heat transfer medium flows through the shell jacket and the hollow stirring shaft through the rotary joint. The hollow stirring shaft has different internal structures according to the type of the heat medium.

Features of Hollow blade dryer hollow paddle dryer
1. Energy saving: energy saving is the big advantage of this equipment, energy saving and consumption reduction guarantee the low-cost operation of the complete equipment;

2. Intensification: A single machine can process up to 100 tons of sludge per day, making the complete set of equipment intensive;

3. Chemical: all system equipments are sealed and run without leakage of dust and odor. The complete set of equipment is operated under negative pressure,

The site is clean and hygienic, with good performance;

4. Intelligent: All system equipment adopts intelligent detection, two lines of automatic control and manual control, which are more conducive to production

On-site stabilization operations;

5. Simplification: due to the ingenious structure of the equipment and the idea of ​​breaking into parts, it is conducive to the overhaul and maintenance of the equipment.

It not only reduces the labor intensity of production workers but also reduces the requirements for the use of on-site maintenance equipment, and is more suitable for the needs of use and production practices in developing regions.

Parameter of Hollow blade dryer hollow paddle dryer