AIR-DRIVEN PUMP DEVICE, AND FILTERING DEVICE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an air-driven pump device using air instead of electric power as a power source, and to provide a filtering device using the same.

SOLUTION: This filtering device 10 using this air-driven pump device includes: the air-driven pump device P1 for supplying a processing object liquid to a filtering tank 3 from a tank 100 for storing the processing object liquid; a filter 4 arranged in the filtering tank 3 for filtering processing waste and sludge in the processing object liquid; a second air-driven pump P2 driven by air supplied from an air source for returning a filtrate filtered by the filter 4 to the tank 100 from the filtering tank 3; and a discharge means 5 driven by the air supplied from the air source for discharging processing waste and sludge filtered in the filtering tank 3 to the outside of the filtering tank 3.

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