Air Curtain Dust Removal Device Design and Dust Prevention Strategy in Heading Face

Table 1

Main parameters of the ACDRD.

Content	Unit	Parameter
Injection box height	mm	1200
Length of the upper injection cavities connected to the outlet	mm	3840
Distance between the upper vent and outlet	mm	1800
Number of inlets on the left/right side of the injection chamber	—	3
Distance to the left/right injection chamber of outlet	mm	960
Number of air inlets on the left/right side of the injection cavity	—	3
Distance between the injection cavity on the left/right side connected to the outlet	mm	450
Adjustable width of slits	mm	0–22
Number of air bezels installed on both sides of the injection box	—	25 × 2
Spacing of the pores on both sides of the injection tank	mm	20