Asphalt maintenance car sliding door comprising two-stage flow priority valve bank

An asphalt maintenance car sliding door comprising a two-stage flow priority valve bank comprises a motor, the two-stage flow priority valve bank and a sliding rail arranged on the top of the side wall of a mixing tank; the sliding rail extends in the car head direction, the middle of the extending segment is provided with a supporting rod used for supporting the extending segment of the sliding rail, one end of the supporting rod is fixedly connected with the sliding rail, and the other end of the supporting rod is fixedly connected with a car body; the sliding rail is provided with a door plate which can move along the sliding rail; the motor drives the door plate to slide; the two-stage flow priority valve bank comprises an oil cylinder, a pressure oil pipeline, an oil return pipeline, a first priority flow valve, a second priority flow valve and a reversing valve; the oil cylinder is connected into the first priority flow valve through the pressure oil pipeline; the first priority flow valve is connected into the second priority flow valve; the first priority flow valve is connected into the oil cylinder through the oil return pipeline; the second priority flow valve is connected into the reversing valve; the reversing valve is connected into the oil cylinder through the oil return pipeline; the reversing valve is connected with the motor. The asphalt maintenance car sliding door is simple in structure and good in sealing effect.