Series spiral thick liquid propeller is one of the ideal equipment that mixes circulation of thick liquid in make thick liquid papermaking industry material. It is suitable for thick liquid material density in 5% under, round thick liquid pool of 15-100m3. It has the advantage such as small floor space, mixing time fast, mixing effectual convenient maintaining. Compared with old-fashioned mixing equipment, it has the advantage of thick liquid pool to build simple, construction convenient, more thick liquid and high unit's circulation rate.