The mixing tank of the Concrete mixer is a cylinder in the middle and a cone on both sides. The cone angle of the front cone is greater than that of the back cone. The installation angle of the tank body is generally 10 °~16 °, and the loading volume accounts for about 65% of the total volume. There are generally two right-handed spiral blades intersecting 180 ° in the groove. The blade is Archimedes spiral at the intersection of cylinder and cone, and the rear cone adopts logarithmic spiral blade with equal spiral angle. The characteristics of the tank structure of the mixing truck are that it can fully mix concrete and continuously and smoothly discharge concrete from various angles.

混凝土搅拌机的罐体后面有一个操作杆。操作杆下方的铭牌上写着卸料和进料。拉动扳手排出材料。一般来说，正向进料到车前，反向出料到车后。下面是燃料阀，它控制混合罐的速度。当需要加速放电时，操作特别方便。搅拌机还配有驾驶室操作杆，可与搅拌机后部同步。还可以控制油箱的正反转，方便司机不用下车就可以在驾驶室内进行操作。

There is an operating rod behind the tank of the concrete mixer. The nameplate below the operating lever reads unloading and feeding. Pull the wrench to discharge the material. Generally speaking, the forward feed reaches the front of the car and the reverse discharge reaches the back of the car. Below is the fuel valve, which controls the speed of the mixing tank. When it is necessary to accelerate discharge, the operation is particularly convenient. The mixer is also equipped with a cab operating lever, which can synchronize with the rear of the mixer. It can also control the forward and reverse rotation of the fuel tank, making it convenient for drivers to operate inside the cab without getting off the car.

操作罐体时，先将操作杆摇动正反转中间位置，待罐体稳定后再将操作杆移动反转位置。反向旋转到正向旋转是相同的操作。如果我们动作匆忙，减速机的齿轮很容易被油箱的惯性损坏。我们的一些站点有工人在现场分发混凝土。这时候要向工人讲清楚，以免造成不必要的损失。

When operating the can body, first shake the operating lever to the middle position of forward and reverse rotation, and then move the operating lever to the reverse position after the can body stabilizes. Reverse rotation to forward rotation is the same operation. If we act hastily, the gears of the gearbox are easily damaged by the inertia of the fuel tank. Some of our sites have workers distributing concrete on site. At this point, it is important to clarify with the workers to avoid unnecessary losses.