The purpose of the mixer is the mechanization of mixing material, its sort is more, classification and characteristics are as follows.
    (1) by mixing capacity classification
    By mixing capacity is large (discharge capacity of 1000~3000L), medium (discharge capacity of 300~500L) and small (discharge capacity of 50~250L).
    (2) according to the classification
    According to the unit there are fixed type and movable two way points. Static mixer is installed on the basis of prepared, the machine can't move. Its large volume, high efficiency, used for mixing floor or mixing station. Mobile mixer is driving wheel, and small volume, light weight, so the motor performance is good. Applied to small and medium-sized temporary works.
    (3) by mixing way classification
    By mixing way cent has since fall type mixing and forced mixing two kinds. Since the fall mixer is put inside a rotating drum mixture, with the rotation of the drum, the drum in the blade to promote the mixture to a certain height, and then rely on gravity free fell down. So repeatedly, until mix well. This blender mixing plastic and half plastic concrete. Forced mixer mixing drum is fixed, and the drum on the axis of rotation in all the compulsory mixing blade. This blender mixing of good quality and high production efficiency. But the power consumption, quick and blade wear. Generally applies to mixing of dry concrete.

    (4) the classification according to the operation way
    According to the operation way has cycle operation type and continuous operation type two kinds. Cycle operation of feed, mixing and unloading process was conducted according to certain time interval, by mixing. Due to the mixing of various materials have been accurately weighing, mixing of good quality. At present most of using this type of job. Continuous operation of the three process is continuous in a longer barrel body. Although its productivity is high cycle operation type, but as a result of the mixture ratio of each material, mixing time is hard to control, so the mixing quality is poor. Currently in use is less.
    (5) according to discharging methods of classification
    Discharging way points for tilting type and the tilting type two kinds. Tilting type by mixing drum tilting unloading, rather than the tilting type reverse discharging by mixing drum.
    (6) by mixing drum shape classification
    According to the mixing drum shape is different, there are pear type, drum type, double cone, the vertical shaft type disk and circular groove horizontal spindle type five kinds. The first three since the fall type mixing; The latter two for forced mixing, domestic use fewer.