Drill head for creating a borehole in the ground

A drill head, for creating a vertical borehole in the ground, comprising a body connectable to a rotary drive of a drilling device, wherein the body comprises;

• drilling tools for loosening the ground at a face of the borehole;
• a suction system, for discharging the loosened ground at the face, connectable to a pump,
• wherein the suction system has an opening region disposed on the body comprising at least one opening in a section of the drilling tools at the face, wherein:
• the opening region is elongated;
• the at least one opening of the opening region is connected to a suction box which at an end opposite to the opening has a connector opening for connecting to the pump;
• the suction box comprises a first pair of opposite sides and a second pair of opposite sides, with a separation between the first pair of opposite sides increasing and a separation of a second pair decreasing between the opening and the connector opening,
• the ground loosened by the drilling tools in a flow direction is suctioned in the opening region through the opening and into the suction box by the pump;
• wherein the suction box is disposed vertically.