Blade with equal pitch

The utility model relates to a stirrer blade, in particular to a blade with an equal pitch. The blade with the equal pitch comprises a hub and vanes arranged on the circumference of the hub at the equal distance, wherein the number of the vanes is at least two; the vanes are of a double-layer structure; the surfaces of the vanes are of a stream-line structure such that the stirring effect is uniform. The mixing efficiency is high and the operation power consumption is low. The blade can effectively inhibit scabbing and aggregating and the maintenance cost of the blade is low. The blade of the utility model is of a structure with the equal pitch, and has a wing-shaped profile and good streamline. The blades are designed into two layers such that the twist resistance is enhanced and the service life is long. The work area of the blade is increased and the circulation flow is enhanced.