Gas stirring is the use of gas bubbles through the liquid layer, to produce stirring effect on the liquid, or make the bubble group a dense state rise, by the so-called rising effect to promote the liquid convection circulation. Compared with mechanical stirring, the effect of bubbles on liquid stirring is weaker, and it is difficult to use for high viscosity liquid with several thousand MPa · s. However, there are no moving parts in the air flow stirring, so it is more convenient to deal with corrosive liquid and reaction liquid under high temperature and high pressure. In industrial production, mixing operation starts from the chemical industry, and is widely used as a part of the process around food, fiber, paper, oil, water treatment, etc. Mixing operation is divided into mechanical mixing and air mixing.

不要在有孔的分支上使用焊接工具，因为这样会损坏衬层。搅拌机的射孔支管不得使用电焊(气焊)工具，因为电焊会破坏搅拌机的内衬塑料，支管的连接必须用专用管件进行坡口连接;搅拌机的射孔支管不得使用电焊(气焊)工具，因为电焊会破坏搅拌机的内衬塑料，支管的连接必须用专用管件进行坡口连接。

Do not use welding tools on branches with holes as this will damage the lining. Electric welding (gas welding) tools shall not be used for perforating branch pipe of mixer, because electric welding will damage the plastic lining of mixer, and special pipe fittings must be used for groove connection of branch pipe; Electric welding (gas welding) tools shall not be used for perforating branch pipe of mixer, because electric welding will damage the plastic lining of mixer, and special pipe fittings must be used for groove connection of branch pipe.

在托轮和滚道之间放入木楔，以控制搅拌筒的旋转，一定要注意；将发动机熄火，拆松液压马达的一根高压油管，搅拌筒可自由旋转，控制搅拌筒的旋转，使维修孔转到下部，然后打开维修孔，清理出筒内商品混凝土。此时一定要注意，产品混凝土排出完毕后，恢复商品混凝土水泥搅拌运输车原状。

In order to control the rotation of the mixing drum, a wedge should be placed between the roller and the raceway; Turn off the engine and loosen a high-pressure oil pipe of the hydraulic motor. The mixing drum can rotate freely. Control the rotation of the mixing drum to turn the maintenance hole to the lower part. Then open the maintenance hole and clean up the commercial concrete in the drum. At this time, it must be noted that after the discharge of product concrete, the commercial concrete cement mixer truck shall be restored to its original state.