1. Pressure gauge inspection method of automatic loading mixer truck: when bulk cement tanker 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.攪拌車卸料時間判別法：正常水泥罐卸料速度一般為每分種1～1.2噸，如果水泥裝載重量為32噸，則一般需要半小時左右卸完，所以可以根據(jù)卸料噸位計算卸料時間，這樣前25分鐘操作人員比較輕松，沒有必要長時間緊盯壓力表或通過其它方法檢查是否卸完。

2. Judgment method for unloading time of mixer truck: 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. In this way, the operator is more relaxed in the first 25 minutes. There is no need to keep a close eye on the pressure gauge for a long time or check whether the unloading is completed by other methods.

3.攪拌車空壓機聲音辨別法：正常卸料時空壓機負載大，空壓機工作時發(fā)出的聲音比較沉悶，罐體卸料結束時，空壓機負載變小，工作聲音變得清脆。

3. Sound discrimination method of air compressor of 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 decreases and the working sound becomes clear and crisp.

4.敲打罐體法：水泥卸料過程中，可以用手敲打罐體，如果聲音沒有回音，則證明罐體內(nèi)水泥余料較多，還要卸一段時間;如果罐體有回音，證明罐體內(nèi)水泥快卸完了。

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料攪拌車卸料軟管觀察法：正常卸料時，卸料軟管受流化水泥沖擊，軟管不斷抖動，如果軟管不再抖動，也可證明罐內(nèi)水泥基本卸完。

5. Observation method of unloading hose of mixing truck: during normal unloading, the unloading hose is impacted by fluidized cement, and the hose continues to shake. If the hose no longer shakes, it can also prove that the cement in the tank is basically unloaded.

水泥接收塔頂揚灰辨別法：正常卸料時，水泥消耗的氣量相對較少，“料多氣少”，接收塔頂揚灰較少，卸料后期“料少氣多”，接收塔頂揚灰增多。

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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