In the concrete mixer truck, the drying tank can be said to be an essential and important part. It is mainly used to filter the water vapor in the compressed air in the air path system, and prevent the air reservoir and various pump valves from being corroded. Generally speaking, the normal operation of the drying tank will directly affect the brake performance of the concrete mixer, so it is necessary to carry out regular maintenance and replacement. So, in the process of using the concrete mixer, how to judge whether the drying tank needs to be replaced?

混凝土搅拌车替换干燥罐的操作并不繁琐，利用气罐底部的放气阀门，来检查气罐底部是否湿润，或许有水。假如干燥罐失效，打开阀门之后会有水流出，应该当即替换新的干燥罐。好多人都是只需不出问题，几年可能都不会换一次。并且不同企业的干燥罐运用寿命不一样，并且车辆行驶的气候环境也有差异，替换的周期就很难一致。假如搅拌车司机们确实不知道何时该替换，能够通过检查储气筒是否有积水的方法来判断。可是在这里也要提示司机朋友们，由于混凝土搅拌车干燥罐连接着气路，罐体内部与外界有必定的压力差，压缩空气未排空时冒然拆开，压缩空气瞬间释放，极易对拆开人员形成损伤。

The operation of concrete mixer replacing drying tank is not cumbersome. Use the vent valve at the bottom of the air tank to check whether the bottom of the air tank is wet or not, and there may be water. If the drying tank fails and water will flow out after opening the valve, a new drying tank should be replaced immediately. Many people just don't need to have problems, and they may not change them for several years. Moreover, the service life of different brands of drying cans is different, and the climate environment of vehicles is also different, so the replacement cycle is difficult to be consistent. If the mixer drivers really don't know when to replace it, they can judge by checking whether there is water in the air reservoir. However, it is also necessary to remind the drivers that since the drying tank of the concrete mixer truck is connected with the air path, there is a certain pressure difference between the inside and outside of the tank. When the compressed air is not emptied, it is rashly disassembled, and the compressed air is released instantly, which is very easy to cause damage to the disassembler.

我们可以从气罐下手，利用气罐底部的放气阀门，来查看气罐底部是否潮湿，或者有水。因为阀门正好位于气罐底部。同时水的比重较大，如果干燥器失效，那么气路中的湿气因为重力自然会攒到气罐底部，也就是阀门上方。

First of all, we can start from the air tank and use the vent valve at the bottom of the gas tank to check whether the bottom of the gas tank is wet or has water. Because the valve is just at the bottom of the tank. At the same time, the proportion of water is large, if the dryer fails, then the moisture in the gas path will naturally accumulate to the bottom of the gas tank, that is, above the valve.

还有一种方法就是，通过释放各个制动分泵的卸压阀来检查车辆气路中是否含水。尤其是在冬天，气温低，定要注意检查管路中是否有水，防止制动失效，干燥罐渗漏，劣质的干燥罐是比较容易渗漏的，而且如果是在气候潮湿的南方，干燥罐的使用寿命也会缩短。相反北方由于气候比较干燥，北方的中科混凝土搅拌车的干燥罐使用寿命就比较

Another method is to check whether there is water in the air path of the vehicle by releasing the pressure relief valve of each brake cylinder. Especially in winter, when the temperature is low, we must pay attention to check whether there is water in the pipeline to prevent brake failure and leakage of drying tank. Poor quality drying tank is easy to leak, and if it is in the South with humid climate, the service life of drying tank will be shortened. On the contrary, due to the relatively dry climate in the north, the service life of the drying tank of the concrete mixer truck in the north is compared