The invention relates to the technical field of purification equipment, in particular to a mechanical filter. By centrifuging water in the filter, it is convenient to carry out reverse and counter-current centrifugal movement of particles in the water, and thereby separation of particles from a filter plate is facilitated, deposition of the particles on the filter plate to cause blockage of the filter plate is reduced, water permeability of the filter plate is improved, the working efficiency of the equipment is improved, and practicality and reliability are improved. The mechanical filter comprises a water tank, a water inlet pip, a water outlet pipe, a countercurrent apparatus, a power apparatus and a support apparatus, wherein the bottom end of the water tank is evenly provided with three sets of support legs, the inside of the water tank is provided with a first cavity, the left output end of the water inlet pipe communicates with the middle of the top end of the first cavity, theleft input end of the water outlet pipe communicates with the middle of the bottom end of the first cavity, the countercurrent apparatus is installed at the middle of the first cavity, and the power apparatus is installed on the lower side of the front end of the water tank.