JPH01169675U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 shows a basic conceptual diagram (diagram corresponding to claims) of a multi-fluid switching rotary valve according to the present invention. Further, FIGS. 2 to 5 show a specific embodiment of the present invention, in which FIG. 2 is a vertical sectional side view of a rotary valve for switching four fluids, FIG. 3 is a cross-sectional plan view thereof, and FIG. , B are a configuration diagram and a graph for explaining the operation of one usage example, respectively, and FIG. 5 is a longitudinal sectional side view of a modified example. FIGS. 6 to 8 are for explaining the technical background of the present invention and the problems of the prior art, and FIG. 6 is a general overview of a gas analyzer for measuring multiple samples. FIG. 7 is a block diagram of a multi-fluid switching means commonly used in the past, and FIG. 8 is a block diagram of a multi-fluid switching means as a comparative example. H: housing, R: rotor, Z: rotation center of rotor R, O: fluid outlet, 11, 12,...
, m: fluid introduction port, P1, P2,..., Pm: fluid introduction pipe, Q1, Q2,..., Qm: overflow pipe.

Claims (1)

[Scope of utility model registration request] A rotor that sequentially selectively closes the plurality of fluid inlets by rotation is provided inside a housing having a plurality of fluid inlets, and is always open at a position corresponding to the rotation center of the rotor in the housing. 1. A rotary valve for multi-fluid switching, characterized in that a plurality of fluid discharge ports are provided, and each of a plurality of fluid introduction pipes connected to the plurality of fluid introduction ports is provided with an overflow pipe for taking out a desired fluid.