What are the advantages of vortex air pump air knife drying and traditional drying

source:Industry News release time:2021-07-26 Article author:Rosit Popular:Air band saw

　　Let us outline the domestic stainless steel air knife drying program. The air knife drying is mainly dried by hot air with compressed air and by hot air with a high-pressure vortex fan. The installation is convenient and the use is more convenient. On the production line of filling products, the outer surface of the bottles of already filled products, such as wine, soda, pure water, etc., should be affixed with outer bottle labels, printed text or boxed. In order to achieve a better paste effect, it is required to dry the surface of the packaging bottle. In the actual production process, the packaging bottle is generally dried or blow-dried.

　　In production, the drying generally adopts a combined brush-drying type or a hot oven drying type, and the bottle brushing device mainly uses a brush to rotate to remove water droplets on the bottle wall. Due to the contact treatment method, the effect of brushing the bottle is closely related to the appearance of the bottle. The printing effect of cylindrical bottles is good, and some parts of the surface of special-shaped bottles such as non-rotating bodies cannot touch the brush, and there is still water film on the outer wall of this part after the bottle is brushed. In addition, in the process of use, the brush is easy to accumulate dirt, which may be transferred to the outer wall of the bottle and affect the quality of the packaging.

　　The drying oven has a simple structure and complete drying, but its thermal power is high, and the working temperature is high. When the automatic production line is arranged, the area isolation treatment is required. When drying, the water takes a long time to completely evaporate, which is not suitable for high output. When the transfer system is blocked during the work, such as bottle jam, bottle pouring, etc., the packaging bottle stays in the oven for too long, which may cause the bottle to burst.

　　In addition, for product surfaces that require high cleanliness, after cleaning and rinsing procedures, drying methods are generally not used. This is because not only must the surface of the packaging bottle be guaranteed to be dry, but also the product surface and rinsing water must be resolved. Contains impurities and causes water spots after drying. The use of vortex air pump air knife drying method, that is, the advantage of pneumatic wind speed is used in the packaging process of filling products. The high-pressure airflow is used to complete the accumulation and acceleration of the airflow through the air knife to blow the residual water droplets. The airflow can be used to remove the residual water droplets on the surface of the product. Moisture is easily blown off.

　　In actual operation, the smaller the height of the air knife nozzle gap, the greater the resistance of the jet airflow, and the higher the heat converted by the entire system. According to the operating characteristic curve of the fan, its life will be shorter. . Therefore, when setting the gap height, it is necessary to weigh the jet speed of the air knife and the operating life of the high-pressure fan to determine it. The shorter the guide section of the injection port, the better, in order to reduce unnecessary friction loss, but it should not be too short. It is best to use 3 times the height of the gap design, otherwise it will not have a good guiding air jet effect, which will cause the jet The airflow cannot be concentrated on the surface of the packaging bottle, resulting in the remaining water droplets can not be effectively blown off. During the operation of the drying and dewatering equipment, the pressure and air volume characteristics of the fan are a curve. In the non-rated state, the air flow rate of the nozzle can be dynamically obtained by the method of experimental measurement, so as to adjust the operating state of the fan in time.