Rotary filter with external shaft bearings - has no shaft seals, permitted leakage being recycled to trough

摘要

A rotary filtration plant has a filter (e.g. of drum or disc type) mounted on a shaft which is immersed in the suspension to be filtered in a trough. The shaft bearings are located outside the trough, and the shaft protrudes through openings in the ends of the trough which are slightly larger in dia. than the shaft. The use of seals, which are inevitably troublesome, is eliminated.