Indofab presents a specific design of the rotary vacuum drum filter. The drum rotates at 10 to 60 revolutions per hour and a vacuum of approximately 400 to 160 torr is built up with a liquid seal pump that is connected to the drum cells via the control head and filtrate pipes. This sucks the liquid through the filter cloth, and
the solids contained in the suspension are deposited in a uniform layer on the cloth on that part of the drum that is submerged in the feed suspension (VAT).
The choice of the most suitable method of cake discharge for a particular RVDF application depends not only on the nature of the cake, but also on considerations of protection of the main filter medium from wear. The cake can vary in consistency, thickness and structure according to the products being handled, from a paste like substance to a consistent solid.
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