Industrial filtration apparatus and method for the separation of solids from a fluid stream

Industrial filtration apparatus for the separation of solids entrained in a fluid stream, the apparatus comprising:

• a flexible perforate filtering sleeve closed at one end and open at the other end whereby the fluid stream may flow into the open other end;
• and fluid from said fluid stream may pass through perforations in the sleeve and entrained solids of a predetermined size will be retained within the sleeve behind the closed end of the sleeve;
• the apparatus further comprising structure, including a discharge pipe for the fluid stream, said pipe having a discharge orifice, and means for holding the other end of said sleeve on said pipe and around said discharge orifice at a point between the closed and open ends of the sleeve, said means for holding providing a restraining force for restraining movement of the sleeve from said pipe part and away from the discharge orifice and enabling sufficient holding force on the sleeve so that a predetermined hydraulic fluid pressure within the sleeve between its closed end and said discharge orifice draws a portion of the sleeve between its open end and its said one end into a position forward of the orifice to expose said drawn portion to the fluid stream;
• said means for holding and providing a restraining force comprising:
• a first annular abutment interior of the sleeve secured to the perimeter of the pipe adjacent the discharge orifice, and a second annular abutment exterior of said sleeve having means providing a resilient bias of said second abutment towards the first abutment, said sleeve being gripped between the two abutments, said portion of the sleeve nearer its open end being drawn into a position forward of the discharge orifice when said restraining force upon the sleeve is exceeded by said predetermined hydraulic fluid pressure within the sleeve acting on an area equal to the cross-section of the discharge orifice.

Industrial filtration apparatus for the separation of solids entrained in a fluid stream, the apparatus comprising:

• a flexible perforated filtering sleeve closed at one end and open at the other end whereby the fluid stream may flow into the open other end;
• and fluid from said fluid stream may pass through perforations in the sleeve and entrained solids of a predetermined size will be retained within the sleeve behind the closed end of the sleeve;
• the apparatus further comprising structure, including a discharge pipe for the fluid stream, said pipe having a discharge orifice, and means for holding the other end of said sleeve on said pipe and around said discharge orifice at a point between the closed and open ends of the sleeve, said means for holding providing a restraining force for restraining movement of the sleeve from said pipe part and away from the discharge orifice and enabling sufficient holding force on the sleeve so that a predetermined hydraulic fluid pressure within the sleeve between its closed end and said discharge orifice draws a portion of the sleeve between its open end and its said one end into a position forward of the orifice to expose said drawn portion to the fluid stream;
• said means for holding and providing a restraining force comprising:
• a first abutment means interior of the sleeve secured to the perimeter of the pipe adjacent the discharge orifice, and a second abutment means exterior of said sleeve, and adjacent said first abutment means, having means providing a resilient bias of said second abutment means towards the first abutment means, said sleeve being gripped between the two abutment means, said portion of the sleeve nearer its open end being drawn into a position forward of the discharge orifice when said restraining force upon the sleeve is exceeded by said predetermined hydraulic fluid pressure within the sleeve acting on an area equal to the cross-section of the discharge orifice.