The invention relates to the technical field of dehumidifier shell
grinding, and discloses an inner hole
grinding device for dehumidifier shell
machining, which comprises a working table, the working table is hollow, a dehumidifier shell is arranged at the top of the working table, an inner hole is formed in the dehumidifier shell, a
sand blasting arm is arranged above the working table, and the
sand blasting arm is arranged above the working table. The bottom of the
sand blasting arm is rotationally connected with a
nozzle, a collecting
barrel is arranged in the
workbench, the top of the collecting
barrel communicates with a collecting cover, a plurality of filter screens with the hole diameters gradually reduced are sequentially arranged in the collecting
barrel from top to bottom, and the purpose of conducting graded filtering on
abrasive materials and impurities is achieved through the filter screens arranged in the collecting barrel. The diameters of impurities screened from the upper surface to the lower surface of the filter screen are gradually reduced, large impurities are screened and filtered, the difficulty of later
grinding material screening is reduced, after grinding is completed, the graded grinding materials and impurities are sucked out through the corresponding recycling pipes, grading of the grinding materials and the impurities is achieved, and follow-up recycling of the grinding materials is facilitated.