Forced concrete mixer has obtained rapid development and promotion since it boomed in early 1950s. The compulsory concrete mixer with round vertical shaft type was invented earlier. This kind of concrete mixer is divided into turboprop and planet type. After the 1870s, the circular groove with horizontal-axis forced mixer appeared along with the application of lightweight aggregates, which includes single shaft and double shaft with the features self-falling and forced concrete mixer. Therefore, the linear velocity of mixing blade is slower with abrasion resistance, less energy consumption rapid development.

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Mixing blades are fixed on the mixing arms in mixing drum. When materials are poured concrete block making machine, the mixing blades driven by concrete mixer revolve to mix the materials. This mixing mode is better than self-falling concrete mixer. Thus it often used to mix dry concrete.

1. Removing dirt and obstacles is the work of maintaining forced concrete mixer body.

2. Checking the lubricating oil, circuit and control equipment of the forced concrete mixer is necessary. And the operator should add lubricating oil according to requirements.

3. Before every working shift concrete batch mix plant, water is added into the mixing drum and then the drum is revolved for 1-2 minutes.

4. In the process of forced mixer operation concrete batching plants, the operator should check whether the noise and temperature of motor, reducer, transmission gear are normal or not.

5. After finishing work, the concrete mixer should be carefully cleaned .