氮气循环气力输送系统工艺流程图

Pipe chain conveyor

Pipe chain conveyor is a continuous powder conveying equipment, which has good conveying quality and safety. Its application in the field of powder conveying in China is becoming increasingly widespread. The principle is mainly to use chain plates as transmission components to drive the powder to move along the conveying pipeline inside a well sealed pipeline. If the internal friction between the powder materials is relatively high compared to the external friction between the material and the conveying pipeline, the powder materials will gradually move and embed with the transmission chain, eventually forming some stable flow materials.

During vertical transportation, the powder inside the conveying channel will be pushed upwards by the transmission chain, as the lower powder will bear the downward sliding force of the upper powder, ultimately generating a certain lateral pressure, which will also increase the internal friction force of the powder. If the internal friction force is greater than the weight of the powder itself and the external friction force, the material will gradually move upwards with the transmission chain, ultimately producing a relatively stable material conveying flow.

管链输送机工艺流程图

两种粉料输送系统的优势对比

管链式输送机的布置示意图

两种粉料输送系统的应用对比

(1) Positive pressure pneumatic conveying equipment was previously widely used in power plant ash conveying devices. Its characteristics of closed conveying, easy layout, and recent national environmental requirements have led to its gradual promotion and application in the chemical industry. There are already many application examples in polyolefin powder conveying and other fields.

(2) In recent years, the application of pipe chain conveyors in industries such as PTA has been relatively mature, and they are currently widely used in similar powder particle conveying with low flow and good fluidity. The interior of the pipe chain conveyor is equipped with mechanisms such as chains, conveyor disks, and corner sprockets. In recent years, many research results have emerged for conveyor disks, chains, tensioning devices, etc., which have solved some problems in the manufacturing and use of pipe chain conveyors and are conducive to the promotion and use of pipe chain conveyors.

The two types of powder conveying equipment have their own advantages and disadvantages, with significant differences in energy consumption, conveying capacity, equipment layout, and applicable types. When selecting powder conveying equipment, it is necessary to consider all aspects of performance, including the physical and chemical properties of the material, as well as meeting the actual production conveying capacity and index requirements.