The centrifugal spray dryer is an equipment that uses a centrifugal atomizer to dry some liquid materials. It has the characteristics of fast drying speed, simplified production process, suitable for continuous control of production, and improved product purity. It is widely used in food, chemical, pharmaceutical, and pharmaceutical industries, as well as Environmental protection and other industries.
The working principle of centrifugal spray dryer is: air passes through the filter and heater, enters the air distributor on the top of the centrifugal spray dryer, and the hot air enters the spray dryer evenly in a spiral shape. The raw material liquid is pumped from the raw material liquid tank through the filter to the centrifugal atomizer on the top of the dryer, so that the material liquid is sprayed into very small droplets. It is dried into finished product instantly, and the finished product is discharged from the bottom of the drying tower and cyclone separator, and the exhaust air is discharged by the fan. It is understood that users can also select the heating method, dust collection and dust removal method according to the actual situation.
At present, the application of centrifuge spray dryers in the field of medicine has been very extensive. There are a wide variety of products on the market, which makes the drying efficiency of the pharmaceutical industry higher. In order to improve the uniformity, fluidity and solubility of the material products, some spray dryer equipment manufacturers It has also increased research and development efforts and continued to innovate processes to create a high-speed centrifugal spray dryer with faster drying speed, higher product purity, and more convenient operation and control to meet the new needs and requirements of material drying of pharmaceutical companies.
It is worth mentioning that in the process of using centrifugal spray dryers, many users often find that the nozzles of the equipment are malfunctioning. For example, during the production process of centrifugal spray drying equipment, the speed of the atomization nozzles is too low, the evaporation rate is too low, and the centrifugal nozzles are running. There are noises or vibrations from time to time, and even the equipment cannot work normally. Therefore, it is very important to understand the causes of nozzle failures and solve the problems.
So, how should we deal with it? The industry believes that there are two aspects for reference. First, if you find noise or vibration during the operation of the centrifugal atomization nozzle, it may be caused by improper cleaning and maintenance of the nozzle of the spray drying equipment, resulting in residual substances in the nozzle or bending and deformation of the spindle; the second may also be Caused by poor dynamic balance of the centrifugal disc.
"If the nozzle speed is too low and the evaporation rate is too low, it may be that the centrifugal nozzle components are malfunctioning. You need to stop using the nozzle first and check the internal components of the nozzle. The reason may be: the air volume of the entire system is reduced; the inlet temperature of the hot air is low; There is air leakage in the equipment, and cold air enters the drying room." The above-mentioned person said.
It is very important to clean and maintain the nozzle of spray dryer regularly, otherwise it may cause subsequent failures from time to time. To solve the problems caused by this kind of reasons, the method is to check whether there are residual substances in the spray disk, and if there is any, it should be cleaned in time; if the spindle is found to be abnormal, it must be replaced. The dynamic balance of the centrifugal disk should be re-adjusted or replaced to solve the problem of nozzle failure.
In addition, it is suggested in the industry to check whether the rotating speed of the centrifuge is normal; check whether the position of the spray drying equipment centrifuge regulating valve is correct; check whether the air filter and air heater pipes are blocked; check whether the grid voltage is normal; check whether the electric heater is normal Work; check whether the connection of each component of the spray drying equipment is sealed, etc., and do a good job of inspection to further troubleshoot and solve the problem, to ensure the stability of the equipment next time.
