The utility model relates to the technical field of filter grid, concretely is a kind of breeding pond water inlet filter grid of fish escape prevention, including frame, the surface of the frame is fixedly installed with screw rod holder, by setting screw rod, cleaning rod, spring, pressing plate, cleaning
brush, scraper, utilize the synergistic effect of these structures, when motor drives screw rod rotation, screw rod block drives cleaning rod along slide rod steady movement, ensure that cleaning process is stable and without deviation, spring pushes pressing plate and makes
brush piece closely adhere filter plate surface, guarantee
brush piece overall contact, avoid brush leak,
shovel-shaped scraper located below brush piece, can
shovel stubborn impurities attached on filter plate first, then brush piece is thoroughly cleaned to residual small
dirt, form the cleaning process of first
shovel after brush, both can efficiently remove the plug on filter plate, and can protect filter plate from excessive wear, ensure that filter plate keeps good permeability state for a long time, effectively prevent
impurity blockage and fish escape.