Sand feeding device

The utility model provides a sanding device, belongs to the technical field of diamond wire manufacturing, and solves the problem that other workpieces are collided due to excessive movement in the sanding process in the prior art. The utility model discloses a liquid inlet assembly. The liquid outlet assembly is communicated with the liquid inlet assembly; the driving mechanism is arranged on one side of the liquid inlet assembly and can drive the liquid inlet assembly and the liquid outlet assembly to move horizontally; and the detection assembly is provided with a detection area, the detection area is arranged on a moving path of the liquid outlet assembly, and the detection assembly can scan the liquid outlet assembly and send a reversing signal or a shutdown signal to an external control system. Through the arrangement of the detection assembly, whether the liquid inlet assembly moves excessively towards one direction can be detected, and when the liquid inlet assembly reaches a set detection area, the l