초록 ▼

A screw conveyor composed of a plurality of modules mated end to end and of identical integrally molded construction. Each module is molded of a suitable plastic material and has integrally formed therewith a cylindrical body, a coaxially disposed tube within the body, and a web helically disposed b

A screw conveyor composed of a plurality of modules mated end to end and of identical integrally molded construction. Each module is molded of a suitable plastic material and has integrally formed therewith a cylindrical body, a coaxially disposed tube within the body, and a web helically disposed between the coaxial tube and the cylindircal body. The module includes ends mateable with corresponding ends of like modules to provide a screw conveyor of intended length and which is rotatable as a single unitary structure. Each module may have a sheave integrally molded thereon for mating with a V-belt drive. Alternatively, the modules can be of open form each having a helical web molded on a central tube preferably having a non-circular and adapted for end to end mating with like modules to provide a screw conveyor of desired length. This open type of screw conveyor can be readily retrofitted to systems having conventional metal conveyor screws.

대표청구항 ▼

A screw conveyor composed of a plurality of like modules mated end-to-end, each of said plurality of modules being integrally molded and each of said plurality of modules comprising: a central tube having first and second ends and an opening extending therethrough between said first and second ends,

A screw conveyor composed of a plurality of like modules mated end-to-end, each of said plurality of modules being integrally molded and each of said plurality of modules comprising: a central tube having first and second ends and an opening extending therethrough between said first and second ends, said opening having a non-circular cross section; a helical web disposed around the outer surface of said central tube and integrally formed thereto, said helical web having a predetermined length and first and second ends extending axially outwardly of said first and second ends of said central tube, respectively, by a predetermined length; said first and second ends of said central tube having means for sealingly engaging adjacent ones of said plurality of like modules as mated end-to-end to form said screw conveyor to provide helical screw conveying surfaces disposed around an effectively continuous central tube; said first and second ends of said helical web having means for confronting corresponding means on adjacent ones of said plurality of like modules as mated end-to-end to form said screw conveyor to provide helical screw conveying surfaces disposed around an effectively continuous central tube; a tensile member extending through said openings of said effectively continuous central tube of said plurality of like modules mated end-to-end to form said screw conveyor, said tensile member having a non-circular cross section corresponding to said non-circular cross section of said opening of said central tube; and means for securing ends of said tensile member with respect to end ones of said plurality of like modules to maintain said plurality of like modules mated end-to-end in compressive mated engagement.