초록 ▼

A fluid diffuser for dispersing a gas or liquid into a body of receiving liquid in which it is immersed. The diffuser includes a rotatable shaft, a thin disk-like member mounted for rotation on the shaft, and an annular ring positioned adjacent the outer perimeter of the disk-like member. At least o

A fluid diffuser for dispersing a gas or liquid into a body of receiving liquid in which it is immersed. The diffuser includes a rotatable shaft, a thin disk-like member mounted for rotation on the shaft, and an annular ring positioned adjacent the outer perimeter of the disk-like member. At least one of the top and bottom walls of the annular ring is porous. These top and bottom walls define a fluid plenum, into which gas or liquid under pressure is introduced to be emitted from the plenum as small, nascent fluid spheroids on the surface of the annular ring. The boundary layer flow from rotation of the disk-like member within the body of receiving liquid shears fine gas bubbles or liquid particles from the foraminous surface or surfaces of the annular ring. The annular ring may be fixed, or rotatable in the opposite annular direction from the rotation of the disk. Impeller blades may be mounted on the top and/or bottom surfaces of the rotatable disk. The fluid diffuser is disclosed immersed in a flotation tank with a system of baffles to define a mixing zone at the bottom of the tank and a flotation zone at the top of the tank. Preferred embodiments of the diffuser include features to improve the mixing as well as diffusing action of the device.

대표청구항 ▼

A fluid diffuser for dispersing a gas or liquid into a body of receiving liquid in which it is immersed, which comprises: (a) a rotatable shaft; (b) a thin disk-like member mounted for rotation on said rotatable shaft perpendicular to the axis of rotation thereof, said disk-like member having a top

A fluid diffuser for dispersing a gas or liquid into a body of receiving liquid in which it is immersed, which comprises: (a) a rotatable shaft; (b) a thin disk-like member mounted for rotation on said rotatable shaft perpendicular to the axis of rotation thereof, said disk-like member having a top surface, a bottom surface, an outer circumferential surface connecting said top and bottom surfaces and having an outer perimeter, the ratio of the overall diameter of said member to the maximum thickness thereof being at least about 8:1; (c) a separate stationary fluid-emitting annular ring positioned adjacent but spaced outwardly from the outer perimeter of said disk-like member, said ring having a top wall, a bottom wall, an inner circumference and an outer circumference, said top and bottom walls defining at least one fluid plenum, at least one of said top and bottom walls of said annular ring being porous in at least a portion thereof, with a foraminous surface to permit the passage of fluid through said wall to the outer surface of said ring so that the introduction of fluid into said plenum will cause fluid to flow out through said porous wall to produce small nascent fluid spheroids on said foraminous surface of the annular ring, which nascent spheroids are sheared off to form still finer particles of fluid by the viscous shear forces exerted by said liquid when said disk-like member rotates about its axis of rotation while immersed in said body of receiving liquid, at least the inner portion of the foraminous surface of said at least one porous wall of said at least one plenum lying in generally the same plane as at least the outer portion of the corresponding one of the top and bottom surfaces of said disk-like member; and (d) a feed line in operative connection with said plenum for fluid to be introduced under pressure into said at least one plenum of said annular ring and from there into the body of receiving liquid as aforesaid.