Chinese
Vacuum filters are mainly divided into two types: intermittent and continuous operation. Intermittent vacuum filters can filter suspensions of various concentrations. In a vacuum leaf filter, the container shell is filled with the suspension. Filter leaves, with filter cloth wrapped on both sides, are immersed in the suspension, and the inner cavity of the filter leaves is connected to the vacuum system. After the filtrate is sucked out, it is led out through a conduit. Filter residue accumulated on the surface of the filter leaves is removed after the machine is stopped.
Continuous vacuum filters are suitable for filtering thick suspensions containing a large amount of solid particles. The working principle of rotary drum vacuum filters, internal filter surface rotary drum vacuum filters, disc vacuum filters, and tilting bucket vacuum filters is similar. The entire filter surface is divided into multiple separated filter chambers. Each rotating filter chamber is sequentially connected to fixed pipes through a distribution valve to suck out the filtrate or washing liquid in the filter chamber, or to introduce compressed air. Each filter chamber completes the entire filtration process with one rotation. The operation of multiple filter chambers in sequence forms continuous filtration. The structure of a belt vacuum filter is similar to that of a belt conveyor, featuring a continuous filter belt, and is suitable for easily filtered suspensions. Belt vacuum filters, internal filter drum vacuum filters, and tilting bucket vacuum filters all feed material from the top of the filter medium (filter cloth), making them particularly suitable for suspensions with high solid particle density and rapid settling.
