Accumulated material cleaning device of belt conveyor

The utility model discloses an automatic accumulated material cleaning device for a belt conveyor. A material guide device is arranged in an area below a conveying belt main body to collect scattered and leaked materials; a material receiving device is mounted at an outlet of the material guiding device and used for receiving the materials guided out of the material guiding device; a gravity sensor is installed at the bottom of a material receiving device to monitor the weight change of collected scattered and leaked materials in real time, when the accumulated materials reach a certain degree, a spiral lifting device is started based on output of the gravity sensor, the accumulated materials are lifted to the bearing face of a conveying belt body through the spiral lifting device, and the accumulated materials are transferred to a designated storage yard along with a conveying belt; by means of the automatic accumulated material cleaning device of the belt conveyor, sticky materials adhering to the return st