如何选择负压气力输送设备?

看物质气体比

Look at the ratio of matter to gas

单程运输的物料质量与同时流经管道的空气质量的比值一般为5-40。每种材料的经济的料气比是不同的

The ratio of material quality for one-way transportation to air quality flowing through pipelines simultaneously is generally 5-40. The most economical material to gas ratio for each material is different

看物料的悬挂速度

Check the hanging speed of the material

气体的向动速度等于材料的向下流动速度。此时,气流速度和悬浮速度相等。悬浮量与物料的粒度、密度有关。

The upward flow velocity of gas is equal to the downward flow velocity of material. At this point, the airflow velocity and suspension velocity are equal. The suspension amount is related to the particle size and density of the material.

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三。看看材料的颗粒大小

III. Check the particle size of the material

粒径就是物料的粒径,小粒径和粒径对气力输送影响较大。

Particle size refers to the particle size of a material, and the minimum and maximum particle sizes have a significant impact on pneumatic conveying.

看看堆的比例

Look at the proportion of the pile

堆比重是指在装填完成后,将粉尘或物料自动装入容器时所测得的单位体积质量。也可以称为松散材料的比重。

The bulk density refers to the unit volume mass measured when dust or materials are automatically loaded into containers after filling is completed. It can also be referred to as the specific gravity of loose materials.

看看理论风速

Take a look at the theoretical wind speed

风扇风量、管径、管长和管路粗糙度等计算得到的风速为理论风速。

The wind speed calculated based on fan airflow, pipe diameter, pipe length, and pipe roughness is the theoretical wind speed.

气流把动物的物质向前推进。管道中的气流以远大于物料悬浮速度的风速将物料向前输送。物料在管道内均匀分布。材料间隙大,料气比一般在5-40之间(即1公斤空气能量输送物料的重量为5-40公斤)。

The airflow pushes the material of animals forward. The airflow in the pipeline transports the material forward at a wind speed far greater than the material suspension speed. The materials are evenly distributed within the pipeline. The material gap is large, and the material to air ratio is generally between 5-40 (that is, the weight of materials transported by 1 kilogram of air energy is 5-40 kilograms).

在负压气力输送中,粒径越大,输送越困难,但气固分离容易。粒径越小,越容易输送,但气固分离困难。

In negative pressure pneumatic conveying, the larger the particle size, the more difficult the conveying is, but gas-solid separation is easier. The smaller the particle size, the easier it is to transport, but gas-solid separation is difficult.

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