HeroFilters – Rotary Brush Strainers are considered a safety filters as they are used to remove larger solids from the processing fluid before the centrifugal clarification step begins. The strainer consists of a set of moving rotary brushes in a cylindrical body and a filtering basket where accumulated solids are collected and removed.
The separated solids are periodically and automatically conveyed to the outlet through a pneumatic valve fitted on the bottom of the strainer and controlled by a control panel.
Two pressure sensors control inlet, outlet and differential pressures.
A.Product inlet
B. Product outlet
C. Solids discharge
Working principle : The strainer has a stainless steel wedge wire filter basket through which the liquid passes. Any coarse particles suspended in the liquid are held back in the filter basket, and then forced downwards by rotating brushes mounted on a central shaft.
This shaft is driven by an electrical gear motor mounted on top of the unit. The collected particles are removed from the cone at the lower end via the sludge valve, which is controlled via a timer in the electrical cabinet.
Depending on application, the flow is designed to be inside to outside or vice versa with the scraper/brush system mounted on dirt straining area.
For high viscosity products or for improved CIP ability, the strainer can be equipped with teflon scrapers.
