Topical negative pressure air control type dust removal device

The utility model discloses a topical negative pressure air control type dust removal device. A cylinder body capable of moving up and down and left and right with a handpiece is fixed at the handpiece of a roadheader; the cylinder body is connected with a negative pressure dust removal blower through a dust removal air duct, a tee is serially connected to the air duct of a topical roadway fan, the main air outlet of the tee faces a tunneling head, the side air outlet of the tee faces the tail of the roadheader, and air control adjusting plates are respectively installed at the main air outlet and the side air outlet of the tee. The dust removal air duct of the topical negative pressure air control type dust removal device disclosed by the utility model can move with the handpiece of the roadheader, since the side air outlet is arranged, the air quantity of the tunneling head can be adjusted, so that the dust removal blower can suck all dusty airflow of the head without leaking, so as to effectively remove du