Application of pulsed self-cleaning air filter in dusty weather
The main components of pulse self cleaning air filter include: air filter cylinder, pulse back blowing system, clean air chamber, frame, control system. The reverse blowing system is composed of pneumatic diaphragm valve solenoid valve, nozzle and compressed air pipeline. The control system is mainly composed of pulse controller, differential pressure transmitter, control circuit, etc. In the process of air filtration, due to the adsorption of dust, the internal and external pressure difference of the air flow through the filter cylinder will gradually increase. When the internal and external pressure difference of the filter cylinder is greater than a certain value, the "pulse controller" is automatically started. It controls the "pulse valve" in a very short time to use compressed air to carry out pulse backblowing from inside out to each row of filter cylinder. To clean up the dust adsorbed on the filter cylinder; When the cartridge is washed clean, the backblowing process will stop on its own.
In some areas, the climate is dry, the relative humidity is low, and the dust weather is frequent. The bad dust weather often occurs in the spring and autumn season. The dust content in the air is large, the duration is long, and the resistance of the self-cleaning air filter is high. So, how to choose pulse self-cleaning air filter?
1, in the selection of supporting equipment to increase the amount of wealth, increase the dust capacity of the filter cylinder, reduce the actual filtration speed. Imported filter paper is selected to increase the strength and breathability of filter paper;
2. Adopt high self-cleaning pressure and dry nitrogen as backblowing air source to strengthen the strength and effect of backblowing self-cleaning (heavy load air filter paper is selected);
3. Increase the diameter and capacity of the air storage cylinder, import diaphragm solenoid valve and reverse air source separate lead pipe, etc., in order to stabilize the pressure of self-cleaning reverse blowing;
4. Add a non-woven chemical fiber filter material inside the coarse filter screen when the sandstorm comes, and remove it when the sandstorm ends;
5, in the system of blowback self-cleaning control can use each contact parallel 3 solenoid valves at the same time blowback;
6, in the sandstorm weather can adjust the programming control instrument to shorten the interval of backblowing.
