Under which working conditions is the filter cartridge prone to non-uniform wear and how to prevent it?
Filter cartridges play a vital role in the dust collector system, and their performance directly affects the dust removal efficiency and stable operation of the equipment. However, under certain conditions, the cartridge is prone to non-uniform wear, which will not only shorten the service life of the cartridge, but also reduce the dust removal effect. The following will discuss in detail in which working conditions the cartridge is prone to non-uniform wear, and put forward the corresponding preventive measures.
I. Working conditions of non-uniform wear of filter cartridges
Uneven airflow distribution
Reason: Uneven airflow distribution inside the dust collector, resulting in part of the cartridge bearing airflow pressure is much greater than other parts. This may be due to poorly designed air inlet, damaged or clogged gas deflector, etc.
Impact: Wear of the filter cartridge increases in areas with high airflow pressure, while wear is lighter in areas with low airflow pressure, creating non-uniform wear.
Difference in dust concentration and nature
Cause: The dust concentration and nature of the dust handled by the dust collector may vary in different areas. For example, in some areas the dust concentration is high, the particles are large and hard, while in other areas the opposite is true.
Impact: High concentration, large particles, and high hardness dust impacts and wears the filter cartridges more severely, resulting in faster wear of the cartridges in these areas.
Temperature fluctuations
Cause: The temperature of the gases handled by the dust collector may fluctuate due to changes in working conditions. High temperature gases have a high impact on the thermal stresses in the cartridge material, while sudden temperature changes may lead to uneven distribution of stresses within the material.
Impact: When working under high temperature or temperature fluctuation for a long period of time, the cartridge material is prone to thermal fatigue and deformation, which in turn leads to non-uniform wear.
Problems with the pulse ash cleaning system
Cause: As an important maintenance means of the cartridge, the performance of the pulse cleaning system directly affects the cleanliness and wear of the cartridge. Failure of the pulse valve, clogging of the blowpipe or insufficient blowing pressure will result in poor soot removal.
Impact: Uneven dust cleaning can lead to uneven dust accumulation on the surface of the cartridge barrel, which in turn increases non-uniform wear.
Improper installation and maintenance
Cause: There may be improper operation during the installation and maintenance of the filter cartridge, such as the installation position is shifted, the fastening is not secure or the maintenance is not timely.
Impact: These problems will affect the normal working condition of the filter cartridge, leading to the occurrence of non-uniform wear.
Second, preventive measures
Optimise airflow distribution
Regularly check the air inlet and gas deflector of the dust collector to ensure that they are unobstructed.
Adopt reasonable airflow distribution design, such as setting even flow plate and adjusting the position of air inlet to improve the problem of uneven airflow distribution.
Control the concentration and nature of dust
Set up pre-treatment devices before the dust collector, such as cyclone dust collector, gravity settling chamber, etc., in order to reduce the concentration of dust entering the dust collector.
According to the nature of dust, choose the appropriate filter cartridge material and filtration precision to improve the dust removal efficiency and extend the service life of the filter cartridge.
Stabilise the gas temperature
Set up cooling or heating devices in front of the dust collector to stabilise the temperature of the gas entering the dust collector.
Select high temperature resistant and temperature difference resistant filter cartridge materials to reduce the impact of temperature fluctuation on the filter cartridge.
Optimise the pulse cleaning system
Regularly check the performance and status of components such as pulse valve, blowing pipe and compressed air system to ensure their normal operation.
Adjust the parameters of pulse soot cleaning according to the actual situation, such as blowing pressure, blowing time and blowing cycle, etc., in order to achieve the best soot cleaning effect.
Standardised installation and maintenance
Strictly follow the operating procedures for the installation and maintenance of the filter cartridge to ensure that the installation position is correct and fastened securely.
Regularly inspect and clean the cartridge, and replace damaged or aging parts in time.
Strengthen monitoring and early warning
Install monitoring equipment on the dust collector, such as differential pressure meters, temperature sensors and dust concentration monitors to monitor the operating status of the dust collector in real time.
Establish an early warning mechanism to issue a timely warning signal when the monitoring data is abnormal, so that timely measures can be taken to deal with it.
In summary, the filter cartridge is prone to non-uniform wear under such working conditions as uneven airflow distribution, differences in dust concentration and nature, temperature fluctuations, problems with the pulse cleaning system, and improper installation and maintenance. In order to prevent the occurrence of non-uniform wear, a series of effective preventive measures need to be taken to optimise the operating environment and maintenance management of the dust collector.
