1. Pressure gauge inspection method of self loading concrete mixing tank truck: when bulk cement tank truck is unloading, the air pressure in the tank is 1.8 ~ 2.4kg/cm2, and the air pressure drops rapidly at the end of unloading. If the pressure gauge drops to between 0 ~ 0.2kg/cm2, it proves that the water and mud in the tank are basically discharged.

2.自上料混凝土攪拌罐車卸料時(shí)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(shí)左右卸完，所以可以根據(jù)卸料噸位計(jì)算卸料時(shí)間，這樣前25分鐘操作人員比較輕松，沒有必要長(zhǎng)時(shí)間緊盯壓力表或通過(guò)其它方法檢查是否卸完。

2. Judging method of unloading time of self loading concrete mixing tank 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, so it is easier for operators in the first 25 minutes, It is not necessary to keep a close eye on the pressure gauge for a long time or check whether it has been unloaded by other methods.

3.自上料混凝土攪拌罐車空壓機(jī)聲音辨別法：正常卸料時(shí)空壓機(jī)負(fù)載大，空壓機(jī)工作時(shí)發(fā)出的聲音比較沉悶，罐體卸料結(jié)束時(shí)，空壓機(jī)負(fù)載變小，工作聲音變得清脆。

3. Self loading concrete mixing tank truck air compressor sound discrimination method: during normal unloading, the load of the air 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(guò)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(shí)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.自上料混凝土攪拌罐車卸料軟管觀察法：正常卸料時(shí)，卸料軟管受流化水泥沖擊，軟管不斷抖動(dòng)，如果軟管不再抖動(dòng)，也可證明罐內(nèi)水泥基本卸完。

5. Observation method of unloading hose of self loading concrete mixing tank 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(yáng)灰辨別法：正常卸料時(shí)，水泥消耗的氣量相對(duì)較少，“料多氣少”，接收塔頂揚(yáng)灰較少，卸料后期“料少氣多”，接收塔頂揚(yáng)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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