Grid silt prevention device applied to water inlet pump house

The utility model relates to a grating silt prevention device applied to a water inlet pump house, which comprises aeration components correspondingly arranged at the bottom of the front side of each grid bar of a grating, and the aeration components are connected to an external air inlet system through corresponding pipe fittings; the aeration assembly comprises 3-5 aeration pipes which are sequentially arranged side by side from front to back, and the distance between every two adjacent aeration pipes is 500-700mm; the two end parts of the aeration pipe are communicated through corresponding ventilation branch pipes; a plurality of aeration holes are sequentially formed in the surface of the aeration pipe at equal intervals from left to right, the hole diameter of each aeration hole is 5-8 mm, the air outlet direction of each aeration hole is perpendicular to the water inlet direction, the distance between every two adjacent aeration holes is 150-250 mm, and the pipe diameter of the aeration pipe and the pi