| 摘要 |
PROBLEM TO BE SOLVED: To provide a jet pump device simultaneously usable for works different in degrees of negative pressure with one negative pressure forming device for downsizing the jet pump device with a simple structure. SOLUTION: The jet pump device comprises a single pressure fluid supply source, diversion paths for diverging pressure fluid supplied from the pressure fluid supply source into a plurality of flows, opening/closing valves provided for the respective diversion paths, and a jet pump provided on a downstream side of at least one opening/closing valve. The pressure fluid supplied from the diversion paths via the opening/closing valves to the jet pump is injected from an injection nozzle into a negative pressure forming pipe, or from the injection nozzle via an air mixing pipe into the negative pressure forming pipe, to form negative pressure on an injection nozzle side part of the negative pressure forming pipe. A negative pressure supply port for supplying the negative pressure is provided for the negative pressure forming pipe, and a downstream side of the negative pressure forming pipe is composed to be a flow-sending path for suction objects sucked from the negative pressure supply port. COPYRIGHT: (C)2009,JPO&INPIT
|
