How Does Cement Mixer Work（Part 1）

1. Before starting the cement mixer, the operating handle of the mixing drum should be placed in the "stop" position.

2. After the cement mixer starts the engine, the mixing drum should be rotated at low speed for about 10 minutes, so that the hydraulic oil can work after the temperature rises to 20°C.

3. When the cement mixer is parked in the open air, the mixing drum should be reversed before charging to discharge the accumulated water and sundries to ensure the quality of the concrete.

4. When the cement mixer is transporting concrete, it is necessary to ensure that the sliding bucket is placed firmly to prevent the swing caused by loosening, injuring pedestrians or affecting the normal operation of other vehicles during the movement.

5. When the cement mixer ships the mixed concrete, the speed of the mixing drum is 2-10 rpm for 1 minute. During transportation, the speed of the mixing drum on the flat road is guaranteed to be 2-3 rpm. When the road surface is 50°C, or the road surface shakes from side to side, the stirring and rotation should be stopped, and the stirring and rotation should be resumed after the road conditions improve.

6. The time for concrete cement mixer to transport concrete cannot exceed the time specified by the mixing station. During the delivery of concrete, the mixing drum should not be stopped for a long time to prevent the concrete from segregating. The driver should observe the concrete condition from time to time, report any abnormality to the dispatching room in time, and apply for processing.

7. When concrete is installed in the cement mixer, the stagnation time at the site shall not exceed 1 hour. If the time is exceeded, the person in charge of the site shall be requested to deal with it in time.

8. The slump of the concrete mixer transported by the cement mixer shall not be less than 8cm. From the time the concrete is put into the tank to the discharge, it must not exceed 2 hours when the temperature is high, and it must not exceed 2.5 hours when the temperature is low in rainy weather.

9. Before the cement mixer discharges the concrete, the mixing drum should be rotated at a speed of 10-12 rpm for 1 minute before discharging.