Fluid flow diverter disc valve.

摘要

A longitudinally extending housing (21) is provided with a generally cylindrical side wall (22) closed by opposed end walls (23,24). The housing sidewall is ported, to connect with ! supply and return lines (17,18) from a source of pressurized fluid (15), and also to connect with the input and discharge lines (19,20) of a process loop. The housing contains a longitudinally extending rotary axle (33) which forms a part of a valve rotator assembly (42) adapted to be angularly positioned between a normal fluid flow position and a reverse flow position. The valve rotator assembly includes a plurality of segmental arcuate pie-shaped portless discs (43-46) mounted for rotation with the axle. The discs extend radially outwardly from the axle, and transversely to the axis (34) defined thereby, and terminate closely adjacent the housing side wall. The discs are disposed alternately adjacent opposite ends of the axle, but spaced from their adjacent housing side wall. Axially aligned alternate disc edges are joined by radial longitudinally extending partitions (52,53) to form a plurality of alternately axially oppositely facing ratary-chambers (I-IV) adapted to communicate with the housing ports. Each chamber is delineated by a disc and two partitions, as well as the housing side wall, with the end of the chamber opposite the disc being open into the housing chamber. The two pair of diametrically opposed discs (43,45-44,46) from a pair of axially spaced transverse planes (50,51) which are disposed adjacent but spaced from their respective housing end walls (24,23). The housing ports are confined between the planes. Due to the open chamber ends, diametrically opposed chambers are always connected through their said open ends via the housing chamber. Two diametrically opposed chambers (II,IV) are of generally equal arcuate extent and size, while the other diametrically opposed chambers (I,III) are of differing arcuate extend and size with one chamber (III) being of substantially lesser arcuate extent than the other (I). Fluid flowing through the housing between ports is always directed across the disc faces parallel to the spaced planes, and flows through the housing generally diametrically. The entire perimeter of the valve rotator assembly is sealed to the circumferential housing side wall by seals (60,61) extending along the arcuate disc edges. In a second embodiment, longitudinal seals (62) are additionally disposed along the outer longitudinal edges of the partitions.