Pressure tank of spraying machine

The utility model discloses a pressure tank of a spraying machine. The pressure tank of the spraying machine is provided with a tank body, a discharging connecting part, an air inflow connecting part, a feeding sealer, a support, a wheel, a wheel fixing shaft and a handle. The tank body sequentially comprises a tank bottom, a cylinder and an end socket from bottom to top and is provided with a cavity. The discharging connecting part is arranged at the lower end of the tank bottom and provided with at least two discharging ports. The air inflow connecting part comprises two air inflow pipes which are arranged on the end socket. The feeding sealer comprises a feeding pipe body and a sealing cover hinged to the upper end of the feeding pipe body, wherein the feeding pipe body is arranged at the upper end of the end socket. The support is welded and fixed to the lower end of the tank bottom. The wheel fixing shaft is welded and fixed to the lower end of the tank bottom and hinged to the wheel. The pressure tank has the advantages of being low in cost, large in capacity, convenient to carry, capable of improving spraying efficiency and stable in performance.