Pelletizer

Claim 1

An apparatus for pelletizing particulate materials in a pelletizing bed comprising in combination: a base; a screw feeder comprising a generally cylindrical shell having a helical screw journaled therein, said feeder having a delivery end and a feed end; a pelletizing drum having an open and closed end and a sidewall, said closed end of said drum journaled about the outer cylindrical surface of the screw feeder enabling it to rotate about an axis substantially common to the axis of the screw feeder, said screw feeder extending somewhat into the drum, such that the screw feeder feeds through the closed end of the drum said drum having a toothed wheel mounted to the backside of the closed end concentric with the screw feeder the length of said sidewall being larger then the radius of the drum at the widest portion of the drum; a frame means secured to the screw feeder and pivotally secured to the base for positioning the feeder and drum at a selected angle to the horizon such that when the drum is filled with sufficient particulate material the feeder feeds the drum below the surface of the pelletizing bed in said drum, said frame comprising rocker arms pivotally mounted to said base and a motor platform, said screw feeder mounted to said platform, such that its delivery end projects therefrom; means secured to said motor platform for driving the screw feeder; means drivingly connected to said toothed wheel to rotate the drum; and, a scraper frame secured to said frame and being an extension thereof for supporting a cross member adjacent the open end of said drum suitable for supporting scrapers and wetting devices.

Claim 2

An apparatus for pelletizing particulate materials in a pelletizing bed comprising in combination: a base; a screw feeder comprising a generally cylindrical shell having a helical screw journaled therein, said feeder having a delivery end and a feed end; a pelletizing drum having an open and closed end and a sidewall, said closed end of said drum journaled about the outer cylindrical surface of the screw feeder enabling it to rotate about an axis substantially common to the axis of the screw feeder, said screw feeder extending somewhat into the drum, such that the screw feeder feeds through the closed end of the drum said drum having a toothed wheel mounted to the backside of the closed end concentric with the screw feeder the length of said sidewall being larger then the radius of the drum at the widest portion of the drum; a frame means secured to the screw feeder and pivotally secured to the base for positioning the feeder and drum at a selected angle to the horizon such that when the drum is filled with sufficient particulate material the feeder feeds the drum below the surface of the pelletizing bed in said drum, said frame comprising rocker arms pivotally mounted to said base and a motor platform, said screw feeder mounted to said platform, such that its delivery end projects therefrom; means secured to said motor platform for driving the screw feeder; means drivingly connected to said toothed wheel to rotate the drum; and, a scraper frame secured to said frame and being an extension thereof for supporting a cross member adjacent the open end of said drum suitable for supporting scrapers and wetting devices.