A dust suction apparatus comprising: a base; a side frame wherein the base and frame defines a dust suction space; a dust suction panel disposed in the dust suction space; and a dust-collection device air-communicated with the dust suction panel, wherein the dust suction panel includes a plurality of dust suction panel modules, wherein the dust suction panel modules are mounted in the dust suction space in a modular fashion to allow the plurality of dust suction panel modules to be removed individually, characterized in that each dust suction panel module includes a grating panel including: a plurality of first spaced walls extending in a first direction; a plurality of second spaced walls extending in a seconding direction perpendicular to the first direction; a plurality of protrusion receiving structures, where each of the plurality of protrusion receiving structures has a protrusion receiving hole defined therein, wherein the plurality of protrusion receiving holes is arranged in a matrix form; and lateral walls to connect to each other to surround the first and second spaced walls. a base; a side frame wherein the base and frame defines a dust suction space; a dust suction panel disposed in the dust suction space; and a dust-collection device air-communicated with the dust suction panel, wherein the dust suction panel includes a plurality of dust suction panel modules, wherein the dust suction panel modules are mounted in the dust suction space in a modular fashion to allow the plurality of dust suction panel modules to be removed individually, characterized in that each dust suction panel module includes a grating panel including: a plurality of first spaced walls extending in a first direction; a plurality of second spaced walls extending in a seconding direction perpendicular to the first direction; a plurality of protrusion receiving structures, where each of the plurality of protrusion receiving structures has a protrusion receiving hole defined therein, wherein the plurality of protrusion receiving holes is arranged in a matrix form; and lateral walls to connect to each other to surround the first and second spaced walls. wherein the dust suction panel includes a plurality of dust suction panel modules, wherein the dust suction panel modules are mounted in the dust suction space in a modular fashion to allow the plurality of dust suction panel modules to be removed individually, characterized in that each dust suction panel module includes a grating panel including: a plurality of first spaced walls extending in a first direction; a plurality of second spaced walls extending in a seconding direction perpendicular to the first direction; a plurality of protrusion receiving structures, where each of the plurality of protrusion receiving structures has a protrusion receiving hole defined therein, wherein the plurality of protrusion receiving holes is arranged in a matrix form; and lateral walls to connect to each other to surround the first and second spaced walls. a plurality of first spaced walls extending in a first direction; a plurality of second spaced walls extending in a seconding direction perpendicular to the first direction; a plurality of protrusion receiving structures, where each of the plurality of protrusion receiving structures has a protrusion receiving hole defined therein, wherein the plurality of protrusion receiving holes is arranged in a matrix form; and lateral walls to connect to each other to surround the first and second spaced walls.