IMPROVED SCREENING SYSTEM AND METHOD FOR SCREENING PARTICULATE MATERIAL

A system for screening particulate material includes replaceable screening modules mounted to a rigid frame by lock pin assemblies. The lock pins are fixe d into housing holes in the frame and interlockingly and removably engage recess apertures in the sidewalls of the screening modules so that the lock pins remain fixed to the frame while allowing the modules to be removed and replaced as required due to wear or to change sieve size. The lock pin assembly comprising an elongate connector strip having first and second major opposite surfaces, a plurality of lock pins joined to said first major surface, and means joined to t he second major surface for connecting the lock pin assembly to said frame. The lo ck pins includes means for interlockingly and removably engaging said attachment apertures to maintain the positioning of each screening module on the frame when the lock pin assembly is attached to the frame. The lock pin assembly remains connected within at least one mounting aperture of the frame while allowing removal of a screening module from the frame and positioning of a replacement screening module on the frame.