Discharge

Discharge refers to the controlled removal of filter cake, filtrate, or residual solids after a filtration cycle. The discharge method depends on filter design—mechanical scraping, vibration, air blow, belt reversal, or gravity drop. A clean discharge ensures low residual heel, stable cycle time, and reproducible dryness. In continuous belt and drum filters, scraper and doctor-blade geometry influence cake integrity and cloth wear; in pressure vessels, pneumatic or hydraulic discharge clears internals without operator exposure. Optimised discharge coordination between mechanical systems, air supply, and control logic reduces downtime and mechanical stress on the cloth. Routine visual checks and discharge-mass balances help verify completeness and identify build-up that can affect quality or capacity.