Two-tube continuous sand muller

摘要

A continuous sand muller for mixing foundry sand and binder additives includes a premixing tube and a primary mixing tube removably secured to a frame. The premixing tube includes a mixing auger and mixes sand and a catalyst. The primary mixing tube receives the mix from the premixing tube. A resin additive or other binder is fed to the primary mixing tube. A single, double shafted motor drives the primary mixing auger directly and the premixing auger through a timing belt drive. The mixed sand and binder is delivered by the primary mixing tube to an outlet. An access or cleanout cover is removably secured to the primary mixing tube.