Mine drill, dust suction hood and dust removal device thereof

A dust suction hood of a mine drill, the dust suction hood comprising:

• a tapered outer cover and a cylindrical outer cover, wherein a top opening of the tapered outer cover is matched with an opening in one end of the cylindrical outer cover;
• a side wall opening of the cylindrical outer cover serves as a dust outlet of the dust suction hood;
• a first gap is formed in the tapered outer cover along a generatrix direction;
• a tapered inner baffle plate, wherein the tapered inner baffle plate is correspondingly disposed in the tapered outer cover;
• a second gap is formed in a position, corresponding to the first gap, on the tapered inner baffle plate;
• a bottom opening of the tapered inner baffle plate is smaller than a bottom opening of the tapered outer cover;
• a first dust suction port is formed between the bottom opening of the tapered inner baffle plate and the bottom opening of the tapered outer cover;
• at least one second dust suction port is formed in a side wall of the tapered inner baffle plate;
• and
• a first blocking member, wherein the first blocking member is matched with an opening in the other end of the cylindrical outer cover, and a first drill pipe connecting port is formed in the first blocking member;
• and a drill pipe of the mine drill passes through the first drill pipe connecting port so as to penetrate the dust suction hood on the drill pipe.