Dust falling device for excavator operation

The utility model provides a dust falling device for excavator operation. The dust falling device comprises a main frame; the small arm is arranged on one side of the main frame; the water tank is fixedly installed at the top of the main frame, an air inlet pipe is fixedly installed at the top of the water tank, a stop valve is fixedly installed at one end of the air inlet pipe, a pressure reducing valve is fixedly installed at the input end of the stop valve, and an air bottle is fixedly installed at the input end of the pressure reducing valve. According to the dust falling device for excavator operation, the water tank, the air bottle, the hose, the spraying pipe, the spraying head and other structures are matched with one another, when the dust falling device is used, air in the air bottle pushes water in the water tank into the spraying head to be sprayed out, and dust falling is conducted; therefore, dust falling can be carried out from the source of earthwork, dust raising is prevented, pollution to th