BÜCHSENSANORDNUNG ZUM SCHUTZ DES DICHTUNGSHOHLRAUMS IN ROTIERENDEN FLUIDGERÄTEN

摘要

An arrangement ( 120 ) of members for a throat bushing for rotary fluid equipment includes a first member ( 122 ) that is useful for seal cavities that contain conventional packing, and a second bushing member ( 132 ) that will be used in conjunction with the first bushing member if the seal cavity utilize a mechanical seal at the remote end of the cavity. Both bushing members ( 122, 132 ) are provided with spiral grooves ( 140 ) in a central bore thereof for the removal of contaminants from the seal cavity. The distal end face ( 124 ) of the first bushing member is contoured to receive a mating proximal end face ( 144 ) of the second bushing member or to also receive the abutting face of a packing ring or a lantern ring. The arrangement of the invention allows an operator to switch between the use of a mechanical seal or conventional packing without having to discard his primary seal cavity protector.