Variable-porosity filter tank

The utility model belongs to the technical field of filter tank devices, and particularly relates to a variable-porosity filter tank, which comprises a filter tank, a filter tank body, a filter tank cover, a filter tank cover and a filter tank cover, one end of the first diversion trench is communicated with the water outlet end of the water inlet pipe, and the other end of the first diversion trench is fixed on the inner wall of the filter tank; the two ends of the second flow guide groove are fixed on the inner wall of the filter tank, and the second flow guide groove is vertically communicated with the first flow guide groove. The first diversion trench and the second diversion trench are arranged to relieve pressure of water flow at the water inlet, so that the water flow uniformly enters the filter tank, and the filter efficiency of the whole variable-porosity filter tank and the stable operation of a subsequent system are guaranteed. 本实用新型属于滤池装置技术领域，具体涉及一种变孔隙滤池，包括：过滤池，侧壁上开设有进水口，所述进水口内套设有进水管；第一导流槽，一端与所述进