Water filter for improving water quality of cooling water

The utility model discloses a water filter for improving water quality of cooling water, which comprises a filter box, a filter screen is fixedly connected with an inner cavity of the filter box, a connecting groove is arranged on one side of the filter box, one side of the connecting groove penetrates through the filter box, a sealing strip is arranged on one side of the filter box, and a screw rod is rotatably connected with one side of the inner surface of the filter box. According to the water filter capable of improving the water quality of the cooling water, by arranging a spherical block, water flow is prevented from directly impacting a filter screen, so that the situation that a filtered object penetrates through the filter screen due to water flow impact is greatly reduced, a lead screw is rotated through a rotating head, and therefore a brush plate slides on the surface of the filter screen; the filter screen is cleaned, the sealing strip is clamped with the connecting groove, after the sealing str