负压式气力输送设备：物料在密闭管道中沿气流方向前进，输送到目标位置。输送介质为低于大气压(即负压)的空气

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)

负压力输送，一般物料输送状态为稀相。稀相：空气输送速度快，物料悬浮在铅管内，分布均匀，在水平管内飞行。由于物料间间隙大，物料输送主要依靠高速气流使物料向前输送。

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.

它主要由进给装置，管路，进给装置，进给旋转阀，管路观察镜，旋风除尘器，旋风卸料旋转阀，进给装置，压力变送器，风机，电气控制箱等组成。

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.

罗茨鼓风机是一种抽气装置。风机开启时，管道内产生高速气流，一般在30m/s以上，进料仓下的进料旋转阀均匀地放置在管道内，物料被高速空气吸入旋风分离器。在装置内部，通过离心力和布袋进行气固分离。物料通过旋风分离器下方的旋转阀进入料仓，气体通过布袋从风机侧排出。

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.

关于负压气力输送设备价格

Regarding the price of negative pressure pneumatic conveying equipment

很多不熟悉的人一听到这种输送设备，都会觉得特别复杂，价格也特别的高，实际上不是这样子的。虽然说负压气力输送设备并不是什么廉价的设备，但是对于一个公司/工厂来讲，负压气力输送设备绝对不是贵的。

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 economic material to gas ratio for each material is different

看物料的悬挂速度

Check the hanging speed of the material

气体的向上流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.

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，小粒径和大粒径对气力输送影响较大。

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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