• Categories:News Center
• Time of issue:2022-05-06 10:48

(Summary description)In the research of pneumatic conveying, the blockage of the pipeline of pneumatic conveying equipment is an important and complicated problem. If the design of the pneumatic conveying system is unreasonable or the system deviates from the normal operating conditions, blockage may occur during the conveying process. Sudden blockage will affect normal production; in severe cases, it will cause the system to stop running, affect normal production and equipment safety, and cause economic losses. At present, there is a lack of in-depth research on the mechanism of pipeline blockage and the prevention and control of blockage at home and abroad.   Pneumatic conveying is a specific application of fluidization technology by using the energy of air flow to transport granular materials in the direction of air flow in a closed pipeline. The pneumatic conveying equipment has a simple structure and is easy to operate. It can be transported in a horizontal, straight or oblique direction. During the transportation process, it can also carry out physical operations such as heating, cooling, drying and air grading of materials or some chemical operations. Pulse pneumatic conveying system has high productivity (material to gas ratio M can reach 30～300), long conveying distance (up to 500m), low air consumption, low conveying wind speed (generally only 1～2m/s), and less pipe wear. During the conveying process, the material is not easy to be broken, and the energy consumption is low, so it is a promising pneumatic conveying method. Pneumatic conveying pipeline is mainly divided into ash conveying pipeline and compressed air pipeline 1. The ash conveying pipeline and compressed air pipeline generally use ordinary seamless steel pipes, and the welding requirements of the pipelines are in accordance with the relevant specifications. 2. For the long straight pipe section not specified in the design drawing, a connecting flange should be installed every 20m or so. 3. The ash conveying pipeline should be installed according to the design drawing. If it is necessary to change due to the on-site situation, the written approval of the design unit must be obtained.