Corrugated pipe pump device

The bellows pump device (1) is provided with a control unit (6) that performs initial control for switching the solenoid valves (4, 5) and supplying pressurized air to the suction-side air chambers (26A, 26B) in advance before the operation of the bellows pump device (1) is started, thereby determining operation air pressures (P1, P2), which are the air pressures of the pressurized air supplied to the suction-side air chambers (26A, 26B) during operation. As initial control, the control unit (6) outputs a control command to the electropneumatic regulators (51, 52) such that the air pressure of pressurized air supplied beforehand to the suction-side air chambers (26A, 26B) gradually increases, and when a detection signal that detects the extended position of the bellows (13, 14) is input from the proximity sensors (29B, 31B), the control unit (6) outputs the control command to the electropneumatic regulators (51, 52). The air pressure of the pressurized air supplied to the suction-side air chambers (26A, 26B)