| 摘要 |
The invention concerns a continuous vacuum filtering apparatus, with endless belt, for example for filtering, drying and desiccating wastewater sludge in sedimentation tanks or industrial treatment plants, comprising a filtering support or medium (4) arranged in the form of an endless belt wound on two rotating cylinders (2, 3) one of which is coupled with a motor (5) driving it in rotation, the filtering support or medium upper side (4') being arranged between a hopper (9) receiving products to be filtered provided outside the loop constituted by the endless belt and a vacuum vessel (7) provided inside said loop. The invention is characterised in that the filtering support or medium (4) consists of two superposed cloths (4A, 4B) made integral with each other, i.e. an external filtering cloth (4A) and an internal cloth (4B), the internal cloth (4B) meshwork being larger than the external filtering cloth (4A) meshwork. |
