Novel spiral propeller

The utility model provides a novel spiral propeller which comprises a propeller main shaft and a spiral blade, the spiral blade is arranged on the propeller main shaft in a sleeved mode, the spiral blade is welded and fixed to the propeller main shaft, a gasket is arranged at the connecting end of the propeller main shaft, and the gasket is arranged at the end of the propeller main shaft in a sleeved mode. The spiral propeller comprises a propeller main shaft and a spiral blade, the propeller main shaft and the spiral blade are welded in a split structure, the inner wall of the gasket is provided with a square key groove, the connecting end of the propeller main shaft is provided with a square key groove, and the gasket is detachably installed at the connecting end of the propeller main shaft through the square key groove. Compared with the prior art, round steel with the smaller diameter is adopted in the production process, the turn-milling process is not needed, material waste is reduced, the gasket is det