TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The power device comprises a motor and a transmission system. The motor is connected to the control system. A bearing wheel is installed under the fermentation cylinder. The outer side of the fermentation cylinder is welded with a steel rail connected to the bearing wheel. The control system comprises a temperature sensing control system. The temperature sensing control system comprises an infrared temperature sensing device installed in the fermentation cylinder, a signal transmission system and a programmable logic controller smart control machine. The temperature sensing control system is connected to the motor and transmission system. The inner part of fermentation cylinder is equipped with a feeding section, a fermentation section and a discharging section. The feeding section and the discharging section in the fermentation are equipped with a thread-type deflector. The fermentation section is provided with overturning sheets. The overturning sheets are distributed at equal distance along with radial direction and the axial direction of the inner wall of the fermentation cylinder. The overturning sheets are distributed at an equal distance along the radial direction of the inner wall of the fermentation cylinder at 15-20 degrees and are distributed at equal distance of 1.5-2.5 m along the axial direction. The terminal end of the overturning sheet is bent with an angle of 30-60 degrees . The feeding chamber and the discharging chamber are fixed on the floor via a support. The upper end of the feeding chamber is equipped with a feeding hopper. An air inlet flange is installed along the axial direction of the fermentation cylinder. The lower end of the discharging chamber is equipped with a discharging hopper and the upper portion with an air inlet flange. An air inlet electric valve is installed between the air inlet flange and the feeding chamber. The air inlet electric valve is externally connected to a fan. The feeding hopper is a trumpet-shaped hopper. The feeding hopper is equipped with a movable cover plate. The feeding hopper is connected to the inner part of the fermentation cylinder via a guide tube. The fermentation cylinder, the feeding chamber and the discharging chamber are connected via spigot connectors. The slots between the spigot connectors are covered and sealed by rubber. The ratio of the length to diameter of the fermentation cylinder is 11:1. The length of the cylinder of the fermentation cylinder is 22-33 m and the diameter is 2-3 m. The angle between the fermentation cylinder and the horizontal floor along the axial direction is 4-6 degrees .