ROTARY PIG DEPARTURE/ARRIVAL DEVICE, PIG STATION USING THE SAME AND AUTOMATICALLY SWITCHING SUPPLY SYSTEM FOR FLUID USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a rotary pig departure/arrival device of which the storing parts become a pig discharge site or a pig feed-back site by rotating a rotor having multiple pieces of pig storing parts and an automatically switching supply system for fluid which uses the device for a fluid supply system and is excellent in system operability and system cleaning, etc.;SOLUTION: In this rotary pig departure/arrival device, ports situated mutually in the 180° direction among the ports 3a, 3b, 3c, 3d which are four pieces of the pig storing parts disposed mutually in the 90° direction on the rotation shaft of the rotor 2 communicating with each other via an opening part 7 which is narrower than the inner radius of port, the rotor which is in the fitting relation of male/female with a rotor casing is brought into slide contact with the rotor casing on the rotation and, when the rotor is rotated, the interruption or the continuity relation between four pieces of outer ports 5a, 5b, 5c, 5d having coupling flanges for connection with outer pipes disposed mutually in the 90° direction on the rotation shaft of the rotor on the outer peripheral part of the rotor casing and the ports 3a, 3b, 3c, 3d is retained.;COPYRIGHT: (C)2003,JPO