Manufacturer supplies small bag filter for installation of Quanzhou bag filter equipment

Description :

　　Product Maintenance

　　Regularly check the operation of control valves, pulse valves, and timers.

　　The failure of the pulse valve rubber diaphragm is a common fault in bag filters, which directly affects the dust cleaning effect. This device belongs to the external filter type, with a skeleton inside the bag. It is necessary to check whether the parts that fix the filter bag are loose and whether the tension of the filter bag is appropriate. Is the support frame smooth to prevent wear and tear on the filter bag. Compressed air is used for dust removal. Therefore, it is required to remove oil mist and water droplets, and the oil-water separator must be cleaned regularly to prevent malfunction of the moving mechanism and blockage of the filter bag.

　　Whether the air volume and pressure and temperature at each testing point are consistent with the design.

　　The installation status of the 3 filter bags, whether there are any occurrences of bag dropping, loosening, wear, etc. after use, can be judged by visually observing the emissions of the chimney after operation.

　　4. Prevent condensation

　　During use, it is necessary to prevent the gas from cooling below the dew point in the bag chamber, especially when using a bag filter under negative pressure. Due to the frequent leakage of air into the outer shell, the gas temperature in the bag chamber is lower than the dew point, causing the filter bag to become damp. This results in dust not being loose but sticking to the filter bag, blocking the fabric holes and causing dust removal failure. This leads to excessive pressure drop in the dust collector, making it unable to continue operating, and some bags may become stuck and unable to remove dust.

　　To prevent condensation, it is necessary to maintain the temperature of the gas in the dust collector and its system at 25-35 ℃ above its dew point (such as the dew point temperature of 58 ℃ for kiln mill integrated machines, and the operating temperature should be above 90 ℃), in order to ensure the good use effect of the filter bag.

　　The dust removal efficiency of a bag filter depends on the thickness of the dust layer on the filter material and filter bag. The increase in filtering wind speed depends on the cleaning method and material performance, as well as the dust removal efficiency of the bag filter. It also depends on the thickness of the dust layer on the filter material and filter bag. Generally speaking, when the filter material is dense and the dust layer is thick, the efficiency is high; But the corresponding gas processing capacity decreases, that is, the filtering wind speed decreases. So, how can we increase the filtration air speed while ensuring high efficiency and stable pressure loss of the dust collector? The increase in filtering wind speed depends on the cleaning method and the performance of the filter material The bag filter and bag dust chamber used by Zaoming do not have a dust cleaning device, and the filtering wind speed is low, which means the gas processing capacity is low. Later on, bag filters with periodic automatic vibration and intermittent dust cleaning were developed, including mechanical vibration, reverse airflow, and reverse airflow vibration back blowing bag filters, which significantly increased the filtration air speed. However, due to the method of cutting off the processed gas chamber by chamber and sequentially cleaning the filter bags in each chamber, the dust collector did not fully function. Now, bag filters with advanced dust cleaning devices have been selected, such as pulse bag filters, which are one of them. The pulse bag filter continuously cleans the filter bag without cutting off the gas being processed. During operation, the pressure loss of the dust collector and the dust containing gas being processed remain almost unchanged. After using compressed air for dust removal and high-efficiency filter bags, the filtered air reading reaches 5 meters per minute. Compared with mechanical vibration cleaning bag filters, it has the advantages of large gas processing capacity, long bag life, high dust removal efficiency, and efficient maintenance.

　　The performance of inertial dust removal equipment varies depending on its structure. When the gas flow rate inside the equipment is below 10m/S, the pressure loss is between 200-1000Pa, and the dust removal efficiency is 50% -70%. In practical applications, inertial dust removal equipment is generally placed at the stage of multi-stage dust removal systems to separate coarser particles of dust. It is particularly suitable for capturing dry dust with a particle size greater than 10 μ m It is not suitable for removing adhesive dust and fibrous dust. Inertial dust removal equipment can also be used to separate droplets, and it is recommended that the gas flow rate inside the equipment be between 1-2m/s.

AfterSalesService :

• bag filter