When using the concrete mixer daily, do the car owners pay attention to the operation of ready mixed concrete and water supply? Now I'll take you to know something.
1、 Correct operation of ready mixed concrete:
a. First, inject 2/3 of the total water volume.
b. 1/2 of the coarse aggregate, 1/2 of the sand and all the cement are sent into the mixing drum in sequence, and then the remaining 1/2 of the coarse aggregate and water are sent into the mixing drum.
c. Rotating speed and mixing time of mixing drum: rotating speed of mixing drum during feeding: 6-10 r/min; rotating speed of mixing drum during mixing: 6-10 r/min; mixing time: 10-16 min.
d. The stirring and discharging methods after mixing are the same as those mentioned above.
2、 Normal operation of water supply system:
1. Water is supplied by water pump:
a. First turn on the rocker switch of the water pump in the cab, then turn on the buzzer switch, and the water pump can work. At the same time, the buzzer gives out a "beep beep" sound.
b. When adding water to the mixing drum or flushing the hopper tank, open the "hopper" valve.
c. When flushing the discharge chute, open the chute valves.
d. When washing the body, first open the water gun valve, and then directly use the tail water gun.
2. Pneumatic water supply:
① First turn on the air supply switch in the cab. When the main vehicle pressure reaches 8kg/cm2, turn on the manual air switch of the water supply system. When the pressure reaches 2kg/cm2, it can work.
② When adding water to the mixing drum and flushing the hopper tank and discharge tank, first open the valve at the bottom of the water tank, and then open the "hopper" valve.
③ When washing the body, first open the valve at the bottom of the water tank, and then directly use the rear washing device.
This is the end of the explanation of the normal operation of the premixed concrete and water supply of the mixer truck. If you have any questions about this, please come to our website Look!