小型搅拌车是由多个参数决定的，用任何一个单一参数来描述一台小型搅拌车是不可能的。下面小编就针对这方面内容来讲解下：

Small mixer truck is determined by multiple parameters, and it is impossible to describe a small mixer truck with any single parameter. The following minor editor will explain this aspect:

轴功率（P）、桨叶排液量（Q）、压头（H）、桨叶直径（D）及搅拌转速（N）是描述一台小型搅拌车的五个基本参数。桨叶的排液量与桨叶本身的流量准数，桨叶转速的一次方及桨叶直径的三次方成正比。

Shaft power (P), blade discharge (Q), pressure head (H), blade diameter (D) and mixing speed (N) are five basic parameters to describe a small mixer truck. The discharge volume of the blade is in direct proportion to the flow criterion of the blade itself, the first power of the blade speed and the third power of the blade diameter.

而搅拌消耗的轴功率则与流体比重，桨叶本身的功率准数，转速的三次方及桨叶直径的五次方成正比。

The shaft power consumed by stirring is proportional to the specific gravity of the fluid, the power criterion of the blade itself, the third power of the speed and the fifth power of the blade diameter.

在一定功率及桨叶形式情况下，桨叶排液量（Q）以及压头（H）可以通过改变桨叶的直径（D）和转速（N）的匹配来调节，即大直径桨叶配以低转速（保证轴功率不变）的小型搅拌车产生较高的流动作用和较低的压头，而小直径桨叶配以高转速则产生较高的压头和较低的流动作用。在搅拌槽中，要使微团相互碰撞，办法是提供足够的剪切速率。

Under the condition of a certain power and blade form, the liquid discharge (Q) and pressure head (H) of the blade can be adjusted by changing the matching of the diameter (D) and speed (N) of the blade, that is, the small mixer with large diameter blades and low speed (to ensure the same shaft power) will produce higher flow effect and lower pressure head, while the small diameter blades with high speed will produce higher pressure head and lower flow effect. In the stirred tank, the way to make the micro clusters collide with each other is to provide sufficient shear rate.

从小型搅拌车理看，正是由于流体速度差的存在，才使流体各层之间相互混合，因此，凡搅拌过程总是涉及到流体剪切速率。

From the point of view of small mixer truck, it is the existence of fluid velocity difference that causes fluid layers to mix with each other. Therefore, all mixing processes always involve fluid shear rate.

剪切应力是一种力，是搅拌应用中气泡分散和液滴破碎等的原因。需要指出的是，整个搅拌槽中流体各点剪切速率的大小并不是一致的。

Shear stress is a kind of force, which is the cause of bubble dispersion and droplet breakage in mixing applications. It should be pointed out that the shear rate at each point of the fluid in the whole stirred tank is not the same.

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