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1. (WO2013124922) AIR-DRIVEN PUMP DEVICE, SCREW CONVEYOR, AND FILTER DEVICE USING AIR-DRIVEN PUMP DEVICE

Pub. No.:    WO/2013/124922    International Application No.:    PCT/JP2012/006702
Publication Date: Fri Aug 30 01:59:59 CEST 2013 International Filing Date: Sat Oct 20 01:59:59 CEST 2012
IPC: B23Q 11/00
B01D 29/17
B01D 29/25
B01D 29/37
B01D 35/027
B01D 36/00
F04B 49/04
Applicants: AISIN AI CO., LTD.
アイシン・エーアイ株式会社
Inventors: AKIYAMA, Taiki
秋山 大樹
SATO, Yoshikazu
佐藤 厳一
Title: AIR-DRIVEN PUMP DEVICE, SCREW CONVEYOR, AND FILTER DEVICE USING AIR-DRIVEN PUMP DEVICE
Abstract:
Provided are: a screw conveyor capable of avoiding device malfunctions caused by objects to be removed, and of separating the objects to be removed; and a filter device using an air-driven pump using the screw conveyor and an air-driven pump using air, not power, as a power source. This screw conveyor has: a conveyance path, having provided in the lower section thereof a mesh-like dewatering means that leaves behind the objects to be removed from a coolant (liquid to be treated), said coolant having machining debris, sludge, and other objects to be removed mixed therein; and a screw rotatably arranged inside the conveyance path, that conveys the objects to be removed inside the liquid to be treated, from one side to another side, using spiral blades. The screw is characterized by protruding further in the radial direction than the blades and by having a blockage prevention means that eliminates clogging up of the dewatering means.