What are the common types of failures in concrete mixing plants? How can they be dealt with?
Today is the concrete mixing plant trouble shooting series, zhenheng for everyone to continue to explain。
Fault: cement weigh weight not accurate
Plus weight calibration can display the correct value, after unloading the number does not return to zero, cleared after loading weights, digital changes larger, but check the sensor resistance value in the normal range, and the instrument is no problem
cause of failure
Transport with fixed scale frame angle not rid; pressure head and the pressure plate at the hairpin; the scale body and external interference; 3 sensor types do not match; weighing material partial load.
If the transport with fixed scale frame angle is not removed, should be promptly removed; if the pressure head or pressure plate card, should be promptly dealt with, make it smooth without resistance; if the scale body and external interference, should be timely isolation; if the 3 sensor types do not match, should replace the favorable type sensor; if the material the partial load should be adjusted.
Fault two: it is difficult to open and close the feeder door when there is no material in the hopper
The cylinder action is slow and weak, but check the mechanical part of the discharge door without friction, clamping phenomenon, and the solenoid valve, cylinder are no leakage phenomenon
The gas path is not smooth, such as the gas source at the triple gas water separator filter is too dirty, cause the gas path is not smooth, so that the gas flow rate per unit time is reduced, resulting in slow moving cylinder; the muffler is too dirty, in the motion of the cylinder when the rod cavity and a non rod cavity pressure becomes small, leading to the cylinder moves slowly.