| 摘要 |
PURPOSE: An automatic pneumatic pump is provided to prevent drop of pressure in an air-storing tank and to reduce noise by decreasing discharging amount of compressed air. CONSTITUTION: An automatic pneumatic pump comprises a tank(1) connected to a water supply pump(5) of a collecting tank(4); a suction valve(11) selectively opening or closing a suction port(10); a discharge valve(21) selectively opening or closing an outlet port(20); a pressure sensing unit(30) detecting pressure of the tank by having high and low pressure sensing sensors(31,32); a water level sensing unit(40) detecting upper and lower limited water level of the tank by having upper and lower limit sensing sensors(41,42); a microcomputer controlling system according to an output signal of the water level sensing unit and the pressure sensing unit; an air supplying pipe(50) opened or closed by a control signal of the microcomputer; a compression solenoid valve(51) inducing suction of air from the air supplying pipe; and a discharge solenoid valve(61) inducing discharge of the air.
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