초록 ▼

A pipe-mounted dual velocity strainer is disclosed including a bottom strainer portion to provide a first velocity flow path in one direction and a top strainer portion to provide a second velocity flow path in the opposite direction. A check valve and coaxial conduit between the two strainer portio

A pipe-mounted dual velocity strainer is disclosed including a bottom strainer portion to provide a first velocity flow path in one direction and a top strainer portion to provide a second velocity flow path in the opposite direction. A check valve and coaxial conduit between the two strainer portions provide means for obtaining different velocities dependent upon the direction of flow. The invention is utilized in fluid distribution and collection for ion exchange and filtration systems.

대표청구항 ▼

A dual velocity strainer for collecting a fluid at a first flow rate and distributing said fluid at a second flow rate in an environment comprising particulate matter, said strainer comprising: (a) a substantially cylindrical fluid-distributing high velocity strainer portion having a fluid straining

A dual velocity strainer for collecting a fluid at a first flow rate and distributing said fluid at a second flow rate in an environment comprising particulate matter, said strainer comprising: (a) a substantially cylindrical fluid-distributing high velocity strainer portion having a fluid straining means comprising a plurality of openings for distributing said fluid at a relatively high velocity in a fluid flow path, said openings allow passage of said fluid while retaining said particulate matter, said high velocity strainer portion communicating with a coaxial compartment disposed radially inwardly therefrom, said coaxial compartment being further defined by first and second walls opposing each other and having a central opening for receiving a conduit therethrough; (b) a substantially cylindrical fluid collecting low velocity strainer portion adjacent said second wall of said high velocity strainer portion, said low velocity strainer portion having a fluid straining means comprising a plurality of openings for collecting a fluid at a relatively low velocity in a fluid flow path, said openings allow passage of said fluid while retaining said particulate matter, said low velocity strainer portion communicating with a coaxial compartment disposed radially inwardly therefrom, said coaxial compartment being further defined by said second wall of said high velocity strainer portion and a check valve rest plate opposing said second wall, said rest plate having a central opening for receiving said conduit therethrough, said rest plate having a plurality of openings therethrough located radially from said central opening; (c) a substantially cylindrical check valve compartment adjacent said check valve rest plate, said compartment defined by said check valve rest plate and a check valve restraining plate opposing said check valve rest plate, said check valve restraining plate having a central opening for receiving said conduit therethrough and a plurality of openings therethrough located radially from said central opening; (d) said conduit disposed coaxially through said central opening in said first and second walls of said high velocity strainer portion, through said central opening of said check valve rest plate and through said central opening of said check valve restraining plate; (e) a check valve having an axial opening therethrough, said check valve having a first substantially flat surface adapted to cover said plurality of openings of said check valve rest plate, a second surface angularly opposed to said first surface, said second surface adapted to prevent said check valve from covering said plurality of openings in said check valve restraining plate, said check valve being slidably mounted upon said conduit; and (f) a connecting means for connecting a surface of said check valve restraining plate to a fluid distribution and collection system.