Material is easily broken in the process of conveying, screw and chute are also easy to wear. The unit power is large.There needs to keep the tank¡¯s sealing and a proper gap between screw and feeding trough. Vertical screw conveyor is suitable for short distance transportation. The screw of the flexible screw conveyor is composed of flexible shaft and synthetic rubber blade.It is flexible, it can be set according to the technological requirements of the scene or any arrangement.