The utility model provides a lotion concentrator well agitating unit that gathers materials belongs to lotion agitating unit technical field. The device is formed according to certain angle, arrangement welding by angle steel, I -steel, steel pipe, flange, closing plate. I -steel vertical welding is on the drive shaft, and the angle steel is on a parallel with the drive shaft welding at the I -steel tip. Four mixing arm angles that the welding formed differ 90 in proper order. The drive shaft is formed by steel pipe processing, and the drive shaft top is passed through the flange and is connected with upper portion harrow frame, seals up apart from drive shaft bottom 50mm department adoption closing plate. During wear -resisting steel pipe was inserted to the drive shaft bottom, the drive shaft height changed between 1500mm-2500mm. The utility model discloses the device is simple, reliable, can solve effectively that the tradition gathers materials that well agitating unit structure is unreasonable, agitating unit mutability, the problem of twisting, coming off, and then solves the lotion concentrator and gather materials underflow concentration heterogeneity in the well, lotion concentrator and press difficult problems such as harrow shuts down, has realized that the lotion concentrator gathers materials well ground paste homogenization, fluidization and stirs.