What Types Of Cement Mixers Are There?

Self-standing cement mixer have a long history. As early as the early 20th century, drum-type concrete mixers driven by steam engines have begun to appear. After the 1950s, double-cone mixers with reverse discharge and tip-out discharges and split-cylinder mixers were successively introduced and developed. The inner wall of the mixing drum of the self-falling concrete mixer has mixing blades arranged radially. When working, the mixing drum rotates around its horizontal axis, the materials added into the mixing drum are lifted to a certain height by the blades, and then fall by their own weight, so the repeated movements can achieve the effect of uniform stirring. The structure of the self-falling concrete mixer is simple, and it is generally based on mixing plastic concrete.

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Since the emergence of the forced cement mixer in the early 1950s, it has been rapidly developed and popularized. The first to appear is the disc vertical shaft type forced concrete mixer. This mixer is divided into two types: turboprop and planetary. After the 1870s, with the application of light aggregates, a circular groove horizontal shaft type forced mixer appeared. It is divided into single horizontal shaft type and double horizontal shaft type, which has the characteristics of self-falling and forced mixing. . The linear speed of the stirring blade is small, the wear resistance is good and the energy consumption is low, and the development is fast. The rotating shaft arm frame in the mixing drum of the forced concrete mixer is equipped with mixing blades. The materials in the mixing drum are added, and under the strong agitation of the mixing blades, a cross flow is formed. This mixing method is far stronger than the free-fall mixing method, and is mainly suitable for mixing dry hard concrete.

The continuous concrete cement mixer is equipped with spiral mixing blades. Various materials are continuously weighed into the mixer according to the mixing ratio, and the mixed concrete is continuously discharged from the discharge end. The mixing time of this mixer is short, the productivity is high, and its development is remarkable.

With the development of concrete materials and construction technology, many new types of concrete mixers have emerged, such as steam-heated mixers, supercritical speed mixers, sonic mixers, swing-disc mixers without mixing blades, and second-mix concrete mixers and so on