Dustproof double-roller sand making machine

The utility model relates to a dust-proof double-roller sand making machine, which comprises a rack, a water pump and a shell with a sealing structure, the rack is provided with two crushing cylinders and a driving structure for driving the crushing cylinders to rotate, each crushing cylinder comprises a rolling cylinder and a main shaft, the rolling cylinders are sleeved and rotationally connected with the main shafts, a rolling gap is formed between the two rolling cylinders, and the water pump is arranged in the rolling gap. The two rolling cylinders are located in the shell, the shell is provided with a discharging port and a feeding port, the discharging port is located below the rolling cylinders so that sand rolled out by the rolling cylinders can fall out, and the feeding port is located above the rolling cylinders so that stones to be rolled can be input between the two rolling cylinders. A plurality of water spray nozzles distributed in the circumferential direction of the discharging port are arran