Gangue scraper conveyor coal preparation plant cast stone plate high-temperature cement ash buried scraper feeder, Working principle:When the spiral shaft rotates, due to the gravity of the material and the friction generated with the trough wall, the material can only move forward along the bottom of the conveyor's trough propelled by the blades, much like a non-rotating nut moving translationally along a rotating screw. The movement of material at the intermediate bearings relies on the thrust from the material advancing from behind. Therefore, the transportation of material in the conveyor is entirely a sliding motion. To keep the spiral shaft in a more favorable tension state, the driving device and discharge outlet are generally placed at the same end of the conveyor, while the feed inlet is positioned as close as possible to the other end near the tail.The rotating spiral blades push the material forward for transportation. The force that prevents the material from rotating with the spiral conveyor blades is the material's own weight and the frictional resistance from the conveyor casing. The blade profile varies based on the material being transported, including solid-face, belt-type, and blade-type profiles. At the end of the material movement direction, the spiral shaft of the conveyor has a thrust bearing to withstand the axial reaction force from the material. For longer conveyor lengths, intermediate hanging bearings should be added.

Based on the direction of material displacement, spiral conveyors are divided into two main types: horizontal spiral conveyors and vertical spiral conveyors. Spiral conveyors with conveying chains made of high-strength plastic are also known as food spiral conveyors or spiral elevators, primarily used for transporting large items such as cartons, turnover boxes, and bottled water. Depending on the characteristics of the material being transported and structural differences, spiral conveyors include horizontal spiral conveyors, vertical spiral conveyors, flexible spiral conveyors, and spiral tube (roller conveyor) conveyors. Gangue scraper conveyor coal preparation plant cast stone plate high-temperature cement ash buried scraper feeder.