Nozzle for coal mining machine roller, coal mining machine roller and coal mining machine

The utility model relates to a nozzle for a coal mining machine roller, the coal mining machine roller and a coal mining machine. The nozzle comprises a fixed seat and a spray head; a first through hole and a second through hole which are communicated with each other are formed in the fixed seat; the periphery of the spray head is sleeved with a spring; one end of the nozzle is a closed end; the other end of the spray head is an open end to form a water inlet; the interior of the spray head is hollow to form a water inlet channel communicated with the water inlet; the closed end can slide along the first through hole; the closed end is provided with at least two inclined water outlet channels; according to the utility model, the spray head and the fixed seat adopt a split structure; underthe action of a spring, the spray head retracts into the first through hole in the non-working state, dust and the water outlet channel are isolated, blockage is avoided, the nozzle replacement frequency is reduced, the spray