Spraying device for belt unloading machine head

The utility model provides a spraying device for a belt unloading machine head, which is arranged on one side of an unloading rolling barrel of a belt conveyor and comprises a spraying pipeline, a first one-way valve, a second one-way valve and a cooling water supply pipeline, one end of the cooling water supply pipeline is connected with a belt conveyor water cooling device, the other end of the cooling water supply pipeline divides a water path into two paths through a tee joint, one path is connected with the spraying pipeline through a first one-way valve, and the other path is connected with the drainage hose through a second one-way valve. The bottom of the actuating rod contacts with the top surface of the belt. The automatic flow control device can realize automatic flow control, when the coal quantity on the belt is large, cooling water is completely guided into the spraying pipeline, and when the coal quantity is small, one part of the cooling water flows into the drainage ditch, and the other part