Patent ID: 6572347
Filing Date: 2003-06-03
Classification: F04B,F15B,Y10T

Abstract:
A fluid apparatus configured by a reciprocating pump in which a barrier membrane configured as a bellows or a diaphragm that is reciprocally moved in an axial direction is disposed in a pump body so as to form a liquid chamber between said barrier membrane and an inner wall of said pump body, a suction port and a discharge port are disposed in said inner wall of said pump body facing said liquid chamber, said suction port having an inlet portion, a stroke of sucking two or more different kinds of liquids from said suction port into said liquid chamber by reciprocal motion of said barrier membrane, and a stroke of discharging the liquids in said liquid chamber from said discharge port are alternately performed, whereinan outlet portion of said suction port facing said liquid chamber is opened so as to eject sucked liquids toward a circumferential wall of said liquid chamber, said circumferential wall being located in a direction different from the axial direction, supply pipes respectively for the two or more kinds of liquids are pipe-connected to said inlet portion of said suction port so as to join together, and an outlet portion of said suction port facing said liquid chamber is disposed in a side face of a protruding forward end of a suction check valve which is fixed to protrude from said inner wall of said pump body facing said liquid chamber, into said liquid chamber.