Compact multistage rake-free concentration device

The invention relates to a compact multistage rake-free concentration device. The device comprises a feeding assembly, a diversion assembly and a clean coal collecting assembly, the diversion assemblyfurther comprises a central tank body; coal slime water passes through the feeding assembly, flows with a medicament from the upper part of the central tank body to the middle part of the central tank body, and is diffused in all directions, after the reaction, residual mineralized bubbles and fine coal slime move upwards into the clean coal collecting assembly from the inner side wall of the central tank body, the clean coal collecting assembly is located above the outlet of the diversion assembly, the clean coal collecting assembly is sequentially provided with an edge feeding area and a bubble removing area from outside to inside, the clean coal collecting assembly further comprises a diversion settling area arranged on the outer side wall of the central tank body, slime water defoamedby a defoaming area is ou