負壓式氣力輸送設備：物料在密閉管道中沿氣流方向前進(jìn)，輸送到目標位置。輸送介質(zhì)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(jìn)給裝置，管路，進(jìn)給裝置，進(jìn)給旋轉閥，管路觀(guān)察鏡，旋風(fēng)除塵器，旋風(fēng)卸料旋轉閥，進(jìn)給裝置，壓力變送器，風(fēng)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(fēng)機是一種抽氣裝置。風(fēng)機開(kāi)啟時(shí)，管道內產(chǎn)生高速氣流，一般在30m/s以上，進(jìn)料倉下的進(jìn)料旋轉閥均勻地放置在管道內，物料被高速空氣吸入旋風(fēng)分離器。在裝置內部，通過(guò)離心力和布袋進(jìn)固分離。物料通過(guò)旋風(fēng)分離器下方的旋轉閥進(jìn)入料倉，氣體通過(guò)布袋從風(fēng)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(guān)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(tīng)到這種輸送設備，都會(huì )覺(jué)得特別復雜，也特別的高，實(shí)際上不是這樣子的。雖然說(shuō)負壓氣力輸送設備并不是什么廉價(jià)的設備，但是對于一個(gè)公司/工廠(chǎng)來(lái)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(zhì)氣體比

Look at the ratio of matter to gas

單程運輸的物料質(zhì)量與同時(shí)流經(jīng)管道的空氣質(zhì)量的比值一般為5-40。每種材料的經(jīng)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(dòng)速度等于材料的向下流動(dòng)速度。此時(shí)，氣流速度和懸浮速度相等。懸浮量與物料的粒度、密度有關(guān)。

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，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(dòng)裝入容器時(shí)所測得的單位體積質(zhì)量。也可以稱(chēng)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(fēng)速

Take a look at the theoretical wind speed

風(fēng)扇風(fēng)量、管徑、管長(cháng)和管路粗糙度等計算得到的風(fēng)速為理論風(fēng)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(dòng)物的物質(zhì)向前推進(jìn)。管道中的氣流以遠大于物料懸浮速度的風(fēng)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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