A deflector is installed on the air inlet of the worktable to prevent dust directly hitting the filter element, thereby extending the filter element service life; It is a low-noise, high-efficiency centrifugal fan, and high efficiency and stable operation; Use noise reduction on the fan to prevent noise pollution; Sets the work table and the dust removal function in one, and directly removes the dust at the source of dust production; Integrated design, small footprint, more work can work side by side; Use rotary injection make jet more thoroughly and work more stable.