What are the common errors in the design of pneumatic conveying systems?
We have summarized the most common errors in the design of pneumatic conveying systems for everyone. Below are some of the most common errors and specific suggestions on how to avoid them in engineering
Firstly, there is an error in the pressure calculation of the pneumatic conveying system
? ? The most difficult part in pneumatic conveying is how to correctly calculate the pressure drop of the pipeline length of the entire pneumatic conveying system, because there are many variables in a pneumatic conveying system, including pipe diameter, pipeline layout, product density, powder particle size, etc. However, pressure is very important in the entire pneumatic conveying system. A small mistake may cause problems with the entire pneumatic conveying system.
Secondly, low picking speed in pneumatic conveying systems
? ? Remember, there is a pressure gradient on the conveying system. When the air velocity at one end differs greatly from that at the other end, without considering the pressure drop through the system, the picking speed will not be sufficient to fluidized the product, otherwise the picking will be blocked
Thirdly, underestimate the flow rate of the pneumatic conveying system
? ? A common mistake in pneumatic conveying system feeding systems is designing their average flow rates. Because most of the time our productivity may be different, let's assume you want the system to run during peak traffic. When the pneumatic conveying system is implemented at the top, the originally designed average flow rate may not achieve the expected effect and may even block the pipeline. Therefore, when designing the average flow rate, it is necessary to determine the variable of peak capacity. The conveying capacity of the pneumatic conveying system can be adjusted according to your needs.
Fourth, correctly increase the exhaust port in pneumatic conveying
? ? In a dilute phase pneumatic conveying system, if there is no exhaust port, the fan may be supported by gas. When the rotary feeder rotates, each discharge port begins to transport the product to the blow pipe. Due to excessive system pressure, the entire system may not be able to transport the material to the designated location properly
Fifth: Incorrect airflow distribution in pneumatic conveying system
? ? When designing a pneumatic conveying system, if it is in a system with multiple receiving points, ensure that the airflow passes through.
? ? The airtight splitter correctly divides the flow. Airflow is only designed to collect and transmit from one point to another. We need an airtight splitter to isolate each delivery channel from multiple receiving points to multiple destinations
Sixth, improper filtration in pneumatic conveying systems
? ? Some factories mistakenly rely on ventilation filters on silos. The exhaust filter is designed to expel air rather than transport it. This will cause problems with the fresh air flow in the system. In addition to the small ventilation filter on the silo, bag filter is very important for the treatment of conveying airflow
Seventh: Corrosion of Material Contact Parts in Pneumatic Conveying Systems
? ? In pneumatic conveying systems, any corrosive or acidic material can corrode carbon steel. In order to ensure the stable operation of the pneumatic conveying system, it is necessary to ensure that the material contact part is made of stainless steel material.
