Filtering machine and filtering method

The invention discloses a filtering machine and a filtering method, and relates to the technical field of solid-liquid filtering separation. The problems that the filtering efficiency is low and the filtering energy consumption is high due to the fact that the thickness of a filter cake is continuously increased in existing feed liquid filtering are solved. The filtering machine comprises a hollow rotating main shaft and a feeding header pipe; the hollow rotating main shaft is arranged in a sealed pressure-bearing shell, penetrates through the centers of a plurality of sintered metal filter discs and drives the sintered metal filter discs to horizontally rotate; one end of the feeding header pipe is connected with the feed liquid inlet, and the other end of the feeding header pipe extends into the sealed pressure-bearing shell and is respectively connected with a plurality of material distribution pipes; the material distribution pipe and the sintered metal filter disc are arranged at an interval, and a scrap