在管道中，利用一定速度气流的速度能或压力能按指定的路线来输送物料的装置称为气力输送系统，按物料在管道中的流动特征分为负压、正压及正负压混合式三大类型，具有全程密闭化、自动化、管线任意布置、占地少、设备结构简单、输送效率高、多点供料或卸料等优点，是散装粉粒物料现代化输送方式之一，气力输送广泛应用于化工、冶金、建材、铸造、电厂、制药、食品、粮油等行业。

　　The device that uses the velocity or pressure energy of a certain velocity airflow to transport materials along a specified route in a pipeline is called a pneumatic conveying system. It is divided into three types based on the flow characteristics of materials in the pipeline: negative pressure, positive pressure, and positive negative pressure mixed type. It has the advantages of full process sealing, automation, arbitrary pipeline layout, small land occupation, simple equipment structure, high conveying efficiency, multi-point feeding or unloading, and is one of the modern conveying methods for bulk powder materials. Pneumatic conveying is widely used in industries such as chemical, metallurgical, building materials, casting, power plants, pharmaceuticals, food, and grain oil.

　　正压气力输送系统有哪些设备？其主要由气源设备、供料设备、输送管道、分离设备、控制柜等五大部分组成，除此外有时还需用到辅助设备如气动插板阀、检修阀、料位计等等；正压气力输送系统工作原理：制造压缩空气的设备安装在系统前端，其产生的压缩空气与供料器的物料混合后，沿输送管道输送到分离设备，物料与空气分离，分离后的气流经布袋除尘器净化后排入大气。恒通粉体梳理了各设备的用途，详见以下内容。

　　What are the devices in a positive pressure pneumatic conveying system? It mainly consists of five parts: gas source equipment, feeding equipment, conveying pipelines, separation equipment, control cabinets, etc. In addition, auxiliary equipment such as pneumatic plug valves, maintenance valves, level gauges, etc. are sometimes required; Working principle of positive pressure pneumatic conveying system: The equipment for manufacturing compressed air is installed at the front end of the system. The compressed air generated is mixed with the material of the feeder and transported along the conveying pipeline to the separation equipment. The material is separated from the air, and the separated airflow is purified by a bag filter and discharged into the atmosphere. Hengtong Powder has sorted out the purposes of each equipment, as detailed below.

　　正压气力输送气源设备：是气流增压输送设备的总称，其作用是提供具有一定速度和压力的空气流来完成物料的输送，即气力输送系统的动力源，常用的设备有罗茨鼓风机、空压机等。

　　Positive pressure pneumatic conveying air source equipment: It is a general term for airflow boosting conveying equipment. Its function is to provide an air flow with a certain speed and pressure to complete the conveying of materials, that is, the power source of the pneumatic conveying system. Commonly used equipment includes Roots blowers, air compressors, etc.

　　正压气力输送供料器设备：是用来将散粒物料供入输料器且与气流形成一定混合比的装置。其结构及工作原理取决于被输送物料的物理特性和气力输送系统类型，如旋转供料器、仓泵、AV泵、螺旋输送机等。

　　Positive pressure pneumatic conveying feeder equipment: It is a device used to feed granular materials into the feeder and form a certain mixing ratio with the airflow. Its structure and working principle depend on the physical characteristics of the conveyed material and the type of pneumatic conveying system, such as rotary feeders, bin pumps, AV pumps, screw conveyors, etc.

　　输料管道：含输送气体及其与物料混合物的管道和附属管件、是物料输送的通道；如水平管、弯头、分路阀等等。

　　Material conveying pipeline: a pipeline and accessory fittings that transport gases and their mixtures with materials, and is a channel for material conveying; Such as horizontal pipes, elbows, branch valves, etc.

　　正压气力输送分离设备：气力输送系统输送的是物料与空气的混合物、分离设备就是在物料被输送到终点时，把物料从气、固双相流中分离出来的装置。常采用脉冲布袋除尘器：物料因自身重力大部分物料被分离出来落入目的地设备，但一些细小的颗粒或粉末则难以分离出来，排出的气流中会含有一些微细的物料和大量的灰尘，通过布袋除尘器净化后排入大气中。

　　Positive pressure pneumatic conveying separation equipment: The pneumatic conveying system transports a mixture of material and air, and the separation equipment is a device that separates the material from the gas-solid two-phase flow when it is conveyed to the endpoint. Pulse bag filter is commonly used: most of the materials are separated and fall into the destination equipment due to their own gravity, but some small particles or powders are difficult to separate. The discharged airflow will contain some fine materials and a large amount of dust, which are purified by the bag filter and discharged into the atmosphere.

　　气力输送控制设备：PLC控制整个气力输送各设备的开关及工作流程，并向上位机传送各阀门进行开关控制，通常在控制上位机LCD显示屏幕上，显示整套气力输送系统的运行状态、使操作人员清楚现场设备的状态。

　　Pneumatic conveying control equipment: PLC controls the switch and workflow of the entire pneumatic conveying equipment, and transmits various valves to the upper computer for switch control. Usually, the operation status of the entire pneumatic conveying system is displayed on the LCD display screen of the control upper computer, making the operator aware of the status of the on-site equipment.

　　我公司有着多年的工程设计、制造、安装、调试及运行经验，且免费设计各粉粒物料气力输送系统方案，若需要请随时联系我们。

　　Our company has many years of experience in engineering design, manufacturing, installation, commissioning, and operation. We also provide free design solutions for pneumatic conveying systems for various powder materials. Please feel free to contact us if you need any assistance.

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