Screen basket
A screen basket with replaceable profiled bars is described herein. The screen basket includes profiled bars evenly spaced circumferentially to form a plurality of continuous slots that covers the whole basket length. The profiled bars are fixed in place by a backing structure, including support rings. The support rings are made of at least two sections.
1. A screen basket comprising:
a plurality of profiled bars generally aligned along a longitudinal axis so as to define a slotted cylindrical wall having an inner side and an outer side extending between two longitudinal ends; each of the profiled bars having a radial profiled portion and a radial locking portion; and
at least one support ring, each support ring mounted to at least some of the plurality of profiled bars substantially transversally therefrom, for assembling the plurality of profiled bars into the slotted cylindrical wall; each support ring including a plurality of grooves therein; each groove being configured and sized for complementary receipt of the radial locking portion of a respective one of the profiled bars; each screen basket further comprising a moveable insert adjacent the support ring and the radial locking portion of the profiled bars, the moveable insert comprising a disk having an aperture therein, said screen basket further comprising a camming actuator adapted for insertion into said aperture to provide a radially directed camming action on said disk to move said disk radially toward the locking portion of the profiled bars thereby providing a locking force to bias the locking portions of the profiled bars toward the grooves, wherein said camming actuator comprises an oval rod, said disk aperture having a flat edge portion whereby rotation of said rod in said aperture will provide said camming action.
2. The screen basket as recited in claim 1 , wherein said camming actuator comprises a pin, whereby insertion of said pin in said aperture will provide said camming action.
3. The screen basket as recited in claim 1 , wherein said pin is tapered.
4. The screen basket as recited in claim 1 , wherein said at least one support ring comprises a plurality of first support rings and wherein the plurality of first support rings is assembled from a plurality of sections and said at least one support ring comprises a plurality of second support rings, the plurality of second support rings being assembled from a plurality of sections.
5. The screen basket as recited in claim 4 , further comprising top and bottom flanges, each mounted to a respective one of the two longitudinal ends of the slotted cylindrical wall; the first and second support rings being secured to the plurality of profiled bars using a plurality of longitudinal rods spaced around the slotted cylindrical wall; the first and second support rings being provided with holes to receive the longitudinal rods.
6. The screen basket as recited in claim 5 , further comprising combs, each receiving a respective one of the longitudinal rods, for longitudinally positioning the first and second support rings along the slotted cylindrical wall; the combs being secured to both top and bottom flanges therebetween and including longitudinal notches to receive the first and second support rings.