我们都见过混凝土搅拌机，即使是在大马路上，它也会不停地转动罐子来搅拌水泥，这时候我们就会疑惑了，这种长时间工作，对不会损伤车子吗？实际上当然是对施工有利了，下面来分析一番吧。

We have all seen concrete mixers. Even on the main road, they will keep turning the cans to mix cement. At this time, we will wonder whether this kind of long-time work will not damage the car? In fact, it is certainly beneficial to the construction. Let's analyze it.

作为一种运送或者搅拌建筑用混凝土的专用卡车，混凝土搅拌车无疑给建筑工人们省了许多事。只需要将水泥、水、砂石等建筑材料放到搅拌罐中，在搅拌装置的作用下，搅拌罐正转，混凝土沿罐子内部的螺旋叶片向里运动将材料混合均匀，然后再反转搅拌罐，混凝土便沿着叶片向外卸出。

As a special truck for transporting or mixing construction concrete, concrete mixer undoubtedly saves a lot of work for construction workers. Just put the cement, water, sand and other building materials into the mixing tank. Under the action of the mixing device, the mixing tank rotates forward, and the concrete moves inward along the spiral blades inside the tank to mix the materials evenly, and then reverse the mixing tank, and the concrete will be discharged outward along the blades.

然而干过工程的人都知道，混凝土一旦长时间静止，就很容易固化成块，当周围有东西时，会牢牢地黏在上面，一旦干了之后，很难去除，因此即使是运送已经搅拌好的混凝土，搅拌车也会不停地转动，以防止混凝土粘在搅拌罐内占用空间，减少搅拌罐的容积。而在使用搅拌车运送混凝土的时候，搅拌罐也会采用回转密封技术，将搅拌车的进出料口牢牢密封住，减少水份蒸发，从而进一步水泥固化的问题。

However, people who have worked in the project know that once the concrete is static for a long time, it is easy to solidify into blocks. When there is something around it, it will be firmly adhered to it. Once it is dry, it is difficult to remove it. Therefore, even when the mixed concrete is transported, the mixer truck will keep rotating to prevent the concrete from sticking to the space occupied in the mixing tank and reduce the volume of the mixing tank. When the mixer truck is used to transport concrete, the mixing tank will also adopt the rotary sealing technology to firmly seal the inlet and outlet of the mixer truck to reduce water evaporation, so as to further solve the problem of cement curing.

同时，为了延长搅拌车的寿命，在每次装料前，都需要用水冲洗进料口，使进料口在装料时保持湿润。到工地卸料后，人们还需要对出料槽以及搅拌罐记性清洗，一般的方法是往内加清洗用水，然后在车辆回程时，保持混凝土搅拌罐慢速转动。当然有时也会在运输途中进行干料搅拌以清洗系统。

At the same time, in order to prolong the service life of the mixer, it is necessary to flush the feed inlet with water before each loading to keep the feed inlet moist during loading. After unloading at the construction site, people also need to remember to clean the discharge tank and mixing tank. The general method is to add cleaning water, and then keep the concrete mixing tank rotating slowly when the vehicle returns. Of course, sometimes dry materials are mixed during transportation to clean the system.

当然小型混凝土搅拌机的清洗工作要尽快进行，可以这样做：到达工地卸料后，及时用自带清洗水冲洗出料槽后，然后向混凝土贮罐内加清洗用水些清水，在车辆回程时保持混凝土贮罐慢速转动，使清洗水及时清洗罐内混凝土残留物，避免混凝土干燥后吸附罐体内壁，到达搅拌站再次装运混凝土时，先排出罐内清洗水后重复一定的清洁步骤。

Of course, the cleaning of small concrete mixers should be carried out as soon as possible. This can be done: after unloading at the construction site, wash the discharge tank with its own cleaning water in time, and then add some clean water to the concrete storage tank. When the vehicle returns, keep the concrete storage tank rotating slowly, so that the cleaning water can clean the concrete residues in the tank in time, so as to prevent the concrete from adsorbing the inner wall of the tank after drying, and when the concrete is loaded again at the mixing plant, First discharge the cleaning water in the tank and then repeat certain cleaning steps.

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