The invention relates to a head-type device for continuous cleaning and sanitization in conveyor belts, mainly flat sanitary conveyor belts. The head-type device comprises a profile extruded as a single piece that defines the length of the cleaning area and comprises a W-shaped cross section, containing, longitudinally, a plurality of polymer scrapers, a pair of polymer seals being disposed on the left and right ends of said W-shaped extended profile, wherein said pair of seals is also protected and sealed by a pair of polymer caps that limit the length of the extended profile.