the stirring paddle rotates, pushes the material to turn back and forth, mixes evenly, and uses electrical control during operation, and can be set to mix. · · laboratory extraction tank equipment small extraction tank instruments and equipment introduction: extraction equipment is a type of mass transfer equipment used for extraction operations. its main purpose is to achieve mass transfer between the two liquid phases. ideal screening equipment, it can screen materials such as many fibers, high viscosity, high humidity, static electricity, and easy to agglomerate. 1 working principle of spray dryer 2 0 2 3 0 5 0 3 1. working principle of spray dryer: 1. principle of spray dryer: the spray dryer uses atomizer to disperse the raw material liquid into liquid droplets, and uses hot gas (air, nitrogen or superheated steam) to dry the liquid droplets to obtain the product by drying. 30 people