Sprayer

The utility model relates to the field of agricultural tools, and discloses a sprayer, which is characterized by comprising a diaphragm pump, a water inlet and a water outlet are arranged on the diaphragm pump, the water inlet and the water outlet are communicated with each other, a communication component is arranged on the diaphragm pump, a communication pipe is arranged on the diaphragm pump, and the communication pipe and the water inlet are communicated and sealed through a plug screw. When pesticide residues are fixed at the valve of the water inlet or the water outlet, the screw plug is opened, air is sprayed to the water inlet through the air gun, the pesticide residues are blown out through the communicating pipe, parts such as a back pad on the sprayer do not need to be disassembled in the whole process, the treatment time is saved, the mounting position of the communicating pipe is positioned through the transverse plate, and the labor intensity is reduced. Therefore, the torsion of one end, commun