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Nanjing Runbang Machinery Technology Co., Ltd
Structural composition of double cone rotary vacuum drying oven
Date: 2025-04-09Read: 5
1、 Double cone tank body
1. The main body is a double conical closed container that can rotate around a horizontal axis, with a cylindrical shape in the middle and conical design at both ends. The cone angle is usually 60 ° to facilitate material unloading.
2. The tank body is divided into three layers: the middle jacket layer is used to introduce heating medium (steam, hot water or thermal oil), the inner layer is the material chamber, and the outer layer is the insulation layer.
2、 Vacuum system
1. It includes a vacuum pump, condenser, dust collector, and vacuum pipeline, used to maintain a negative pressure environment inside the tank and extract evaporated water vapor or solvent.
2. The condenser can recycle solvents and reduce the load on the vacuum pump.
3、 Heating system
1. By circulating heating media (such as steam, hot water, or thermal oil) through the jacket layer, heat is transferred to the material through the inner wall of the tank.
2. Some devices support electric heating, and the heating element is wrapped around the outer wall of the tank.
4、 Drive system
1. Composed of a motor, pulley, worm gear reducer, and main shaft, the tank is driven to rotate uniformly around a horizontal axis (usually at a speed of 0.4-5 revolutions per minute).
2. Equipped with brake and jog control switch, it can accurately control the stopping angle of the tank body.
5、 Auxiliary structure
1. Shaft and sealing device: Both ends of the shaft are made of stainless steel material, and mechanical seals ensure vacuum performance.
2. Knocking device: The two ends of the tank are equipped with automatic tapping devices to prevent material accumulation.
3. Rack: Carbon steel plate and channel steel welded frame, wrapped in stainless steel and polished to ensure stability.
6、 Control system
Integrated temperature, vacuum degree, speed and other parameter control functions, some equipment is equipped with CIP/SIP cleaning and sterilization systems, which comply with GMP requirements.
Key design features:
1. Control the coaxiality between the cone and the shaft (e.g. coaxiality<0.12mm below 1000L) to ensure smooth operation.
2. All stainless steel material avoids welding potential corrosion and extends service life.
3. The material is flipped inside and outside through the rotation of the tank body, improving the uniformity of drying.
4. All systems work together to create a closed, efficient, and controllable vacuum drying environment.
