Rotary jet flow type deep sea polymetallic nodule ore collecting device

The invention discloses a rotary jet flow type deep sea multi-metal nodule ore collecting device which comprises a shell, a roller, a valve plate and a plurality of hobbing teeth, the valve plate is installed on the shell, the roller is rotatably installed at the end of the shell, a plurality of spray pipes are arranged on the inner side of the roller and connected with the valve plate, a plurality of spray pipe diversion openings are formed in the spray pipes, and the hobbing teeth are arranged on the roller. Each hobbing penetrates through the roller and then is connected with a spray pipe flow dividing opening, hobbing flow channels communicated with the spray pipes are formed in the hobbing, and a plurality of hobbing jet flow openings are formed in the hobbing and are formed in the front sides of the hobbing in the rotating direction. The seabed multi-metal nodule is picked up through rotation of the hobbing and water jet of the hobbing jet orifice, the water jet of the hobbing jet orifice can effectivel