Mineral casting surface treatment device

The utility model discloses a mineral casting surface treatment device which comprises a polishing machine tool, a screw rod is arranged at the top of the polishing machine tool, a power component used for driving the screw rod to rotate is arranged at one end of the screw rod, a movable block is arranged on the outer side of the screw rod in a sleeved mode, and fixed blocks are symmetrically arranged on the side edges of the movable block. A feeding pipe is connected to the top of the fixing block in a penetrating mode, and locking components used for fixing the feeding pipe are arranged on the top of the feeding pipe and the top of the fixing block. The locking component is arranged at the penetrating position of the fixing block and the communicating pipe, an operator inserts the communicating pipe into the fixing hole, the compression springs of the compression holes in the two sides drive the movable balls to be fixedly connected with the communicating pipe in a clamping mode, and therefore the communica