• Categories:Company news
• Time of issue:2021-12-16 08:56

(Summary description)The state of the pneumatic conveying system refers to the movement form of the material changing in the pipeline with the change of the air volume when the gas-solid two-phase flow moves. When the wind speed is higher than the material stop speed, the material is suspended in the air and evenly distributed according to the airflow. The wind speed begins to drop and the material begins to sink and agglomerate. When the airflow is further reduced, the material aggregates into agglomerates in the pipe, showing a state of group pulsation. If the wind speed continues to be reduced, the bulk material will block the pipe section, forming an unstable plug that begins to be transported under the pressure of the air. It is believed that reducing the wind speed, the material becomes a stable plug, propelling the transport under the pressure of the air. If you continue to reduce the wind speed, when the pressure exceeds the rated pressure of the air source, the phenomenon of blocking the pipeline will occur. The choice of transportation type is related to the characteristics of the material, transportation distance and other parameters. It is suggested that the delivery method can be selected according to the actual situation on site. The material conveying speed is higher than the suspension speed, the material moves from the pipeline to the suspended state, and the concentration is relatively low. This mode of transportation is suitable for low-pressure and thin-phase transportation. The material transportation speed is similar to the suspension speed, and the material is dense in the pipeline with moderate concentration, which is suitable for long-distance transportation. This transportation state includes high pressure pressure, high vacuum transportation, and fluidized transportation. The material transportation speed is lower than the stop speed, the material is cut into the bolt shape by the air pressure in the pipeline, and the air pressure before and after the embolization is used to advance with thrust, and the concentration ratio is high. This method is suitable for long-distance low-speed transportation. What are the advantages of pneumatic conveying 1. Bulk material transportation, reduce the cost of packaging and loading and unloading transportation, and reduce the cost 2. The conveyed material is not affected by the weather and the surrounding conditions of the pipeline layout, and the production site layout is relatively easy. 3. Various technological operations such as mixing and crushing, grading, dehumidification and drying, cooling and dust removal and some chemical reactions can be carried out during transportation. 4. Completely closed pipeline transportation, no dust flying, no leakage, good environmental sanitation conditions, can avoid material return, pollution or other sundries, thus ensuring the quality of transportation materials. 5. The equipment is simple, the water delivery pipeline is flexibly arranged, the water delivery facilities are long, the floor area is small, and the space can even be fully utilized, and the investment and maintenance costs of the equipment are low. 6. The throughput is not limited in size, requires less operators, is easy to maintain, and realizes unattended complete automation, thereby reducing labor costs and having a high degree of automation. The structure is simple, the throughput is large, and the use site is not occupied.