看物質氣體比

Look at the ratio of matter to gas

單程運輸的物料質量與同時流經管道的空氣質量的比值一般為5-40。每種材料的最經濟的料氣比是不同的

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

看物料的懸掛速度

Check the hanging speed of the material

氣體的向上流動速度等于材料的向下流動速度。此時，氣流速度和懸浮速度相等。懸浮量與物料的粒度、密度有關。

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.

三?？纯床牧系念w粒大小

III. Check the particle size of the material

粒徑就是物料的粒徑，最小粒徑和最大粒徑對氣力輸送影響較大。

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

堆比重是指在裝填完成后，將粉塵或物料自動裝入容器時所測得的單位體積質量。也可以稱為松散材料的比重。

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.

看看理論風速

Take a look at the theoretical wind speed

風扇風量、管徑、管長和管路粗糙度等計算得到的風速為理論風速。

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

氣流把動物的物質向前推進。管道中的氣流以遠大于物料懸浮速度的風速將物料向前輸送。物料在管道內均勻分布。材料間隙大，料氣比一般在5-40之間(即1公斤空氣能量輸送物料的重量為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).

在負壓氣力輸送中，粒徑越大，輸送越困難，但氣固分離容易。粒徑越小，越容易輸送，但氣固分離困難。

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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