Rotary material collector

The utility model discloses a rotary material collector, and relates to the field of material collection devices. The rotary material collector comprises a main shaft, wherein the main shaft comprises a left-end shaft and a right-end shaft, the right side of the left-end shaft is connected with a spline housing through a flange, the left end of the right-end shaft is connected with a spline shaft through a flange, the spline shaft is inserted into the spline housing in a matched mode, a bearing bush is arranged outside the spline housing, and the periphery of the left-end shaft and the periphery of the right-end shaft are provided with screw blades which are opposite in screw direction. When the rotary material collector works, the two ends and the middle of the main shaft are all provided with supports, and the possibility of deformation of the main shaft is reduced; as the screw blades which are opposite in screw direction are arranged on the left-end shaft and the right-end shaft, when the main shaft rotates, materials can be conveyed from the two ends to the middle, then the materials are conveyed away from the middle in time, the axial force of the main shaft is diffused to the two ends, the prior working situation that one end is stressed is changed, and the working reliability is higher; in addition, the rotary material collector is easy to disassemble and convenient to assemble, and the materials are convenient to transport. The rotary material collector is applicable to collection of various materials when mining and underwater mining are performed.