How to judge whether the unloading of automatic loading mixer truck is completed?
1. Pressure gauge inspection method for automatic loading mixer truck: when bulk cement tank truck is unloading, the air pressure in the tank is 1.8 ~ 2.4 kg / cm2. When unloading is almost over, the air pressure drops rapidly. If the pressure gauge drops to 0 ~ 0.2 kg / cm2, it proves that the cement in the tank is basically unloaded.
2. Judgment method for unloading time of automatic loading mixer: the unloading speed of normal cement tank is generally 1 ~ 1.2 tons per minute. If the loading weight of cement is 32 tons, it usually takes about half an hour to complete the unloading, so the unloading time can be calculated according to the unloading tonnage, so it is easier for operators in the first 25 minutes, It is not necessary to stare at the pressure gauge for a long time or check whether it has been unloaded by other methods.
3. Sound discrimination method for air compressor of automatic loading mixer truck: during normal unloading, the load of the compressor is large, and the sound generated during the operation of the air compressor is relatively dull. At the end of tank unloading, the load of the air compressor becomes smaller and the working sound becomes clear and crisp.
4. Tank beating method: during cement unloading, you can knock the tank by hand. If there is no echo, it proves that there is a lot of cement residue in the tank and it will take some time to unload; If the tank has an echo, it proves that the cement in the tank is almost discharged.
5. Observation method for unloading hose of automatic loading mixer truck: during normal unloading, the unloading hose is impacted by fluidized cement and the hose is constantly shaking. If the hose is no longer shaking, it can also prove that the cement in the tank is basically unloaded.
Identification method of ash lifting on the top of cement receiving Tower: during normal unloading, the gas consumption of cement is relatively small, "more materials and less gas", the ash lifting on the top of receiving tower is less, and the ash lifting on the top of receiving tower is more in the later stage of unloading.
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