Intelligent negative-pressure double-pumping-control dust removal system for fully-mechanized excavation face of coal mine

The invention discloses a coal mine fully-mechanized excavation face intelligent negative pressure double-pumping-control dust removal system which comprises a heading machine, a pressure ventilation cylinder and an exhaust cylinder, two all-directional moving supports are slidably installed on the heading machine through guide rails respectively, the guide rails extend front and back, a dust removal fan is fixed to the heading machine, and the exhaust cylinder extends front and back to be arranged in a heading roadway. The front ends of the two air draft barrels are fixed on the two all-directional moving supports one by one and can move up and down and left and right in the all-directional moving supports, the rear ends of the two air draft barrels are connected with two air inlets of the dust removal fan one by one, and two air outlets of the dust removal fan are combined into a single barrel through the adapter barrel and then are connected to the front end of the exhaust barrel; the front end and the rea