The classic twin shaft paddle structure, suitable for feed, food, chemical industry, pharmaceutical industry, the mixing uniformity of Cv is less than or equal to 5%. Scope of application for a variety of industries material mixed, large effective volume of the body; to add a variety of liquids (such as: water, molasses, grease, etc.). Good quality equipment, stable operation, gentle mixing, does not damage the material properties of the original. The production of high efficiency short mixing time (45~60 seconds per batch), the mixing uniformity coefficient of variation (CV) of less than 5% tons of material consumption is small. Increase the effective mixing volume, loading coefficient of variable range, loading amount is 40% higher than that of similar models. The blade assembly type structure, can easily adjust the blade and the cylinder clearance, and can replace the worn blade. Full length of open discharge valve, discharge more quickly, shorten the mixing time. The access door with a safety lock, convenient cleaning and maintenance.