Passivator mixing device for soil remediation and passivation

The utility model discloses a passivator mixing device for soil remediation passivation, which belongs to the technical field of soil remediation and comprises a mixing box, a mixing cavity is arranged in the mixing box and is divided into a screening cavity at the upper end and a stirring cavity at the lower part through a screening net, and a stirring rod for stirring is rotatably arranged in the stirring cavity. A groove wheel and a transmission belt for driving the stirring rod to rotate are mounted on one side edge of the mixing box corresponding to the stirring rod, and a crushing assembly is arranged on the inner side edge of the mixing box corresponding to the upper part of the screening net; the crushing assembly comprises an adjusting rod and sliding blocks, a crushing roller is rotationally arranged between the two sliding blocks, protruding teeth used for crushing are arranged on the outer edge of the crushing roller, meshing wheels are arranged at the two ends of the crushing roller in a protrudi