Filter device

The utility model discloses a filter device which comprises a tank body, a partition plate, a first filter cavity and a second filter cavity are arranged in the tank body, the first filter cavity and the second filter cavity are separated by the partition plate, and a through hole used for communicating the first filter cavity and the second filter cavity is formed in the top of the partition plate. A water inlet pipe, a separation net, a cobblestone filtering layer and a particle filtering layer are arranged in the first filtering cavity, the water inlet pipe is arranged at the bottom of the first filtering cavity, the separation net is arranged at the top of the cobblestone filtering layer, and the particle filtering layer is arranged at the top of the cobblestone filtering layer; a first activated carbon filtering layer, a second activated carbon filtering layer and a third activated carbon filtering layer are arranged in the second filtering cavity from top to bottom, the bottom of the second filtering ca