负压密相气力输送系统是借助空气的动力在管道中连续输送粉体物料的一种连续输送方式，类型多样，不同类型的气力输送系统结构也略有不同。负压密相气力输送系统一般由气源部分、供料装置、输料管道、分离装置等结构组成。其中：出料部分由扩压器（渐缩管、渐扩管）出灰短节组成。旋转供料器：主要有主阀（壳体、端盖、叶轮、密封结构等），电机减速机、防护装置、排气口等结构组成。扩散混合式：由泵体、气化装置、上部落灰斗组成。进气部分：由调节阀、活动风管、调整机构、喷嘴等组成。负压密相气力输送系统原理负压密相气力输送系统性能稳定，采用连续输送，工艺结构简单，故障率少，主要是利用压缩空气的动压能和静压能或两者联合进行物料输送，气体运动所具有的这种特征主要是通过管道气力输送粉状物料或者是粗颗粒的散碎物料，输送距离远、输送质量好。

The negative pressure dense phase pneumatic conveying system is a continuous conveying method that utilizes the power of air to continuously transport powder materials in pipelines. There are various types of pneumatic conveying systems, and the structures of different types of pneumatic conveying systems are also slightly different. The negative pressure dense phase pneumatic conveying system generally consists of a gas source part, a feeding device, a conveying pipeline, a separation device, and other structures. Among them, the discharge part is composed of a diffuser (gradually reducing pipe, gradually expanding pipe) ash discharge short joint. Rotating feeder: mainly composed of main valve (shell, end cover, impeller, sealing structure, etc.), motor reducer, protective device, exhaust port, etc. Diffusion mixing type: composed of a pump body, gasification device, and upper level ash hopper. Air intake part: composed of regulating valve, movable air duct, adjusting mechanism, nozzle, etc. The principle of negative pressure dense phase pneumatic conveying system: The negative pressure dense phase pneumatic conveying system has stable performance and adopts continuous conveying. The process structure is simple and the failure rate is low. It mainly uses the dynamic and static pressure energy of compressed air or a combination of both to transport materials. The characteristics of gas movement are mainly through pipeline pneumatic conveying of powder materials or coarse particle scattered materials, with long conveying distance and good conveying quality.

作为一种高效的除尘设备，气力输送系统设备已经应用于混凝土制造业的每个生产阶段。随着水泥生产工艺技术的不断发展，许多生产阶段只能用袋装粉尘来生产。制造必须并考虑排放规定。增加气力输送系统的工作能力越有益，显然也将提高合理性。但是，如果粉尘气比过大，则会在相同的旋风率下造成阻塞，并且气动输送机的工作压力也会增加。对于气压型和低正压气力输送系统，将有不止气帽机械设备。

As an efficient dust removal equipment, pneumatic conveying system equipment has been applied in every production stage of the concrete manufacturing industry. With the continuous development of cement production technology, many production stages can only use bagged dust for production. Manufacturing must take into account emission regulations. The more beneficial it is to increase the working capacity of the pneumatic conveying system, obviously it will also improve rationality. However, if the dust to gas ratio is too high, it will cause blockage at the same cyclone rate, and the working pressure of the pneumatic conveyor will also increase. For pneumatic and low positive pressure pneumatic conveying systems, there will be more than just cap mechanical equipment.

气力输送和其他设备相比具有一系列的优点：生产率高、设备的构造简单、管理方便、自动化程度高、节省劳动力、易装载、防潮、防污染。特别是在车进内部应用时，可将输送过程和工艺过程相结合，简化工艺过程和设备。如水泥有袋装改为散装，使用气力输送罐车后，可提高劳动生产效率20倍；改善劳顿条件，减少水泥粉尘外泄，防止污染环境。

Compared with other equipment, pneumatic conveying has a series of advantages: high productivity, simple equipment structure, convenient management, high degree of automation, labor saving, easy loading, moisture-proof, and pollution prevention. Especially when applied internally, the conveying process and process can be combined to simplify the process and equipment. If the cement is changed from bagged to loose, using pneumatic transport tankers can improve labor production efficiency by 20 times; Improve labor conditions, reduce cement dust leakage, and prevent environmental pollution.

管道气力输送技术属于气固两相流，已.有一百多年的，然而直到现在，由于其机理的复杂性，直到现在还没有建立一套完善的理论，大多数设计的及使用的输送系统都是建立在实验的基础上，这导致了其理论的发展远远落后于其在工业上的应用。随着我国工业，农业现代化的进程，物料的搬运日趋频繁，特别是在化工、钢铁、冶金等企业中，大部分劳动力消耗于原料和制成品的运输，因此迫切需要寻找一些经济、省力的搬运方式。

Pipeline pneumatic conveying technology belongs to gas-solid two-phase flow, which has been around for over a hundred years. However, until now, due to the complexity of its mechanism, a complete set of theories has not been established. Most designed and used conveying systems are based on experiments, which leads to the development of its theory falling far behind its industrial application. With the modernization of industry and agriculture in China, the handling of materials is becoming increasingly frequent, especially in chemical, steel, metallurgical and other enterprises. Most of the labor is consumed in the transportation of raw materials and finished products, so there is an urgent need to find some economic and labor-saving handling methods.

气力输送和传统输送方式相比较有以下优点：

Compared to traditional conveying methods, pneumatic conveying has the following advantages:

(1）对物料粒度的要求比较低：既适用于小颗粒物的连续输送，又适用于大颗粒物的间歇输送。对于化学性质不稳定的物料，可使用惰性气体进行保护输送。

(1) The requirement for material particle size is relatively low: it is suitable for both continuous transportation of small particles and intermittent transportation of large particles. For materials with unstable chemical properties, inert gas can be used for protective transportation.

(2）操作方便、自动化程度高：气力输送系统所采用的仪表、输送泵、开关阀门等装置均统一由一个中心控制系统控制，工作人员只需要操作该中心控制系统即可实现对整个系统的控制。

(2) Convenient operation and high degree of automation: The instruments, delivery pumps, switch valves, and other devices used in the pneumatic conveying system are all controlled by a central control system. Staff only need to operate the central control system to achieve control of the entire system.

(3）空间利用率高：由于采用了管道运输，输送的方向不受限制，管路可灵活布置，不受空间、其他装置的影响，可以绕设备、建筑进行输送，很大程度上提高了空间利用率。

(3) High space utilization rate: Due to the use of pipeline transportation, the direction of transportation is not limited, and the pipeline can be flexibly arranged without being affected by space or other devices. It can be transported around equipment and buildings, greatly improving space utilization rate.

(4）操作安全，污染小：气力输送系统的密封性能很好，可以有效地避免物料逸出，提高工作的安全性，同时减少污染。气力输送系统厂家直供优势。欢迎来电咨询江苏惟德智能！

(4) Safe operation and low pollution: The sealing performance of the pneumatic conveying system is very good, which can effectively prevent material leakage, improve work safety, and reduce pollution. Advantages of direct supply from manufacturers of pneumatic conveying systems. Welcome to inquire about Jiangsu Weide Intelligent!