Air suction device with grid

The utility model discloses an air suction device with a grid. The air suction device comprises a shell, a grid assembly and a flattening plate, wherein the shell comprises a base plate and a circumferential wall plate arranged on the peripheral edge of the base plate and extended upwards; an air suction port is arranged on the base plate. The grid assembly is arranged in the shell; the lower surface of the grid assembly is separated from the upper surface of the base plate, so that a first air suction cavity is limited between the lower surface of the grid assembly and the upper surface of the base plate; the first air suction cavity is communicated with the air suction port. The flattening plate is arranged above the grid assembly, so that a plurality of second air suction cavities are limited between the flattening plate and the grid assembly; each second air suction cavity is communicated with the first air suction cavity below through a first through hole penetrating through the grid assembly; a plurality of second through holes communicated with the second air suction cavities are arranged on the flattening plate. The air suction device with the grid has larger adsorption capacity, so that a printed matter can be preferably tiled and attached on the flattening plate of the air suction device with the grid.