Irrigation device with stable-pressure constant-flow water path

The irrigation device comprises a motor, the output end of the motor is fixedly connected with a centrifugal pump, the output end of the centrifugal pump is fixedly connected with a water outlet pipe, the outer surface of the water outlet pipe is fixedly connected with a fixing ring, and the right surface of the fixing ring is fixedly connected with a support. A pressure indicating tube is fixedly connected to the interior of the support, and a first piston is slidably connected to the inner surface of the pressure indicating tube. By designing the pressure indicating pipe and the pressure sensor, under the condition that the total pressure of fluid is the same, the flow velocity of different positions in the static pressure convection pipe is measured, the influence of stamping on the measurement result is avoided, and by designing the telescopic rod, the water storage cavity and the pressure sensor, the consistency of the flow velocity in the pipeline is adjusted according to the static pressure; by designi