Gravel filtering device

The utility model discloses a gravel filtering device and aims to solve the technical problems of low filtering efficiency and inconvenience in use of an existing gravel filter. The filter comprises afilter cartridge body, a first filtering unit and a second filtering unit are sequentially arranged in the filtering cylinder from top to bottom; wherein the filter cartridge body is divided into three cavities by the two layers of filter units, the filter aperture of the first filter unit is larger than that of the second filter unit, the three cavities in the filter cartridge body are sequentially divided into a first cavity, a second cavity and a third cavity from top to bottom, and a water outlet is formed in the surface of the third cavity. The utility model has the advantages that the structure is simple; upper and lower layers of filter screens with different pore sizes are arranged; sand and stone particles of different sizes can be screened, the filtering effect is better, the device is further provided