Rotary Vacuum Filters
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Rotary vacuum filters or rotary drum vacuum filters as they are also referred to are liquid-solids separation machines and can be used across a range of applications. They are used in the chemical, food, paper, pharma and waste water industries.
Rotary vacuum drum filters consist of a horizontal drum which is partically submerged in a trough of liquor which rotates slowly. The surface of the drum is constructed of a metalic screen which is covered with a filter medium and it acts as the filtration surface. Vacuum is applied to the interior of the drum and filtration takes place under a constant pressure drop. As the drum rotates a cake of particles from on the filter surface, while the filtrate is collected inside the filter, from where is is removed by a special pump. The cake is removed contiuously from the filter surface via a scrapper or knife.
Manufacturers of rotary vacuum filters include Eimco, Buss, Filtration Services, Larox etc.
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