Topall Self-Design JZR350 series concrete mixers with hydraulic tipping hopper. HS code: 8474310000 RDCM350-11DH concrete mixer Working principle: The drum rotates in one direction for mixing and in the opposite direction for discharging the concrete. There are two types of blades attached to the inner walls of the drum. One set drags the concrete upwards and toward the center of the mixer when the drum rotates in one direction; The second set of blades pushes the concrete toward the opening when the drum rotates in the other direction. The blades have a spiral arrangement to obtain the desired effect for discharging and mixing.
