Speed-controllable irrigating machine

The utility model discloses a speed-controllable irrigating machine, and belongs to the field of farm machinery. The speed-controllable irrigating machine comprises a vehicle body bracket and an irrigating assembly, and is characterized in that a pushing handle is fixed at the back end of a vehicle body; vehicle wheels are fixed on the two sides of the vehicle body; a pipe supporting plate is fixed at the front end of the vehicle body; a two-position three-way electromagnetic valve is installed on the pipe supporting plate; a servo motor is connected with a semi-gear; the semi-gear is meshed with a rack framework; one end of the rack framework is connected with one end of a piston rod; the other end of the piston rod penetrates through a sealing ring and is connected with a piston; the piston is installed inside a water injecting cylinder; a water inlet of the water injecting cylinder is connected with an outlet of a tee valve; one connector of the tee valve is connected with a running water pipe; the other c