負壓式氣力輸送設備：物料在密閉管道中沿氣流方向前進，輸送到目標位置。輸送介質為低于大氣壓(即負壓)的空氣

Negative pressure pneumatic conveying equipment: The material moves forward along the airflow direction in a closed pipeline and is transported to the target position. The conveying medium is air below atmospheric pressure (i.e. negative pressure)

負壓力輸送，一般物料輸送狀態(tài)為稀相。稀相：空氣輸送速度快，物料懸浮在鉛管內，分布均勻，在水平管內飛行。由于物料間間隙大，物料輸送主要依靠高速氣流使物料向前輸送。

Negative pressure conveying, the general material conveying state is dilute phase. Dilute phase: The air conveying speed is fast, the material is suspended in the lead tube, evenly distributed, and flies in the horizontal tube. Due to the large gap between materials, material transportation mainly relies on high-speed airflow to transport materials forward.

它主要由進給裝置，管路，進給裝置，進給旋轉閥，管路觀察鏡，旋風除塵器，旋風卸料旋轉閥，進給裝置，壓力變送器，風機，電氣控制箱等組成。

It mainly consists of feed device, pipeline, feed device, feed rotary valve, pipeline observation mirror, cyclone dust collector, cyclone discharge rotary valve, feed device, pressure transmitter, fan, electrical control box, etc.

羅茨鼓風機是一種抽氣裝置。風機開啟時，管道內產生高速氣流，一般在30m/s以上，進料倉下的進料旋轉閥均勻地放置在管道內，物料被高速空氣吸入旋風分離器。在裝置內部，通過離心力和布袋進固分離。物料通過旋風分離器下方的旋轉閥進入料倉，氣體通過布袋從風機側排出。

Roots blower is an air extraction device. When the fan is turned on, a high-speed airflow is generated in the pipeline, usually above 30m/s. The feeding rotary valve under the feeding bin is evenly placed in the pipeline, and the material is sucked into the cyclone separator by high-speed air. Inside the device, gas-solid separation is carried out through centrifugal force and cloth bags. The material enters the silo through the rotary valve below the cyclone separator, and the gas is discharged from the fan side through a cloth bag.

關于負壓氣力輸送設備

Regarding the price of negative pressure pneumatic conveying equipment

很多不熟悉的人一聽到這種輸送設備，都會覺得特別復雜，也特別的高，實際上不是這樣子的。雖然說負壓氣力輸送設備并不是什么廉價的設備，但是對于一個公司/工廠來講，負壓氣力輸送設備不是貴的。

Many unfamiliar people will feel that this type of conveying equipment is particularly complex and expensive when they hear it, but in reality, it is not like this. Although negative pressure pneumatic conveying equipment is not a cheap device, it is definitely not expensive for a company/factory.

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 economic 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。看看材料的顆粒大小

III. Check the particle size of the material

粒徑就是物料的粒徑，小粒徑和大粒徑對氣力輸送影響較大。

Particle size refers to the particle size of a material, and small and large 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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