In the operation of automatic feeding mixer needs scientific and correct operation, let's have a look at it!
When the vehicle is filled with concrete, it is not allowed to stay at the site for more than 1 hour. If it exceeds the time limit, the person in charge of the site shall be asked to deal with it in time. The slump of concrete transported by automatic loading mixer shall not be less than 8cm.
From the concrete entering the tank to discharging, it shall not exceed 2 hours when the temperature is high, and it shall not exceed 2.5 hours when the temperature is low in rainy climate. During the transportation of concrete, the mixing drum shall not be stopped for a long time to prevent concrete segregation. The driver shall often investigate the concrete condition, report to the control room in time if any abnormality is found, and request to deal with it.
When the automatic loading mixer truck is used to transport the mixed concrete, the speed of the mixing drum shall be 2-10 rpm. During the transportation process, the rotation speed of the mixing drum shall be kept at 2-3 rpm on the smooth road surface. When the truck is traveling on the road with a side slope greater than 50 or swinging the road surface with large shaking, the mixing rotation shall be stopped and the mixing rotation shall be conducted after the road conditions are improved.
Before starting, put the mixing drum operating handle in the "stop" position. After starting the engine, the mixing drum should be rolled at low speed for about 10 minutes, and the hydraulic oil temperature can be increased to above 20 ℃.
When the concrete is loaded in the open air, the water shall be discharged from the mixer automatically. When transporting concrete, it is necessary to ensure that the sliding bucket is placed firmly to prevent swing due to looseness, which may injure pedestrians or affect the normal operation of other vehicles.
At the end of discharging, immediately flush the inlet, discharge hopper and discharge chute with hose on the truck, and then fill 150-200l of clean water into the mixing drum to let the mixing drum roll slowly to clean the inner wall.