Dust filter bag; During use, the following points should be checked and noted
1. Whether the air volume and pressure and temperature at each testing point are consistent with the design
2. The rotation direction, speed, bearing vibration, and temperature of the fan.
3. Whether the filter bag has fallen off, loosened or worn during use can be judged by visually observing the chimney's emissions during operation
4. The adjustment of cleaning cycle and cleaning time is an important factor affecting the dust capture performance and operating conditions. If the cleaning time is too long, the attached dust layer will be removed, which will become the cause of filter bag leakage and damage. If the cleaning time is too short and the dust on the filter bag has not been removed, resuming the filtering operation will quickly restore the resistance and gradually increase, ultimately affecting its effectiveness.
5. Pay attention to whether there is condensation in the bag chamber and whether the ash discharge system is functioning properly. To prevent blockage and corrosion, severe dust accumulation can affect the production of the host.
6. The interval between two cleaning times is called the cleaning cycle, and it is generally desirable to have a longer cleaning cycle so that the dust collector can operate under economic resistance conditions. Therefore, careful research should be conducted on dust properties, dust concentration, etc., and the cleaning cycle and time should be determined according to different cleaning methods. Adjustments should be made during trial operation to achieve optimal cleaning parameters. If the cleaning time is too long, the attached dust layer will be removed, which will become the cause of filter bag leakage and damage. If the cleaning time is too short and the dust on the filter bag has not been removed, resuming the filtering operation will quickly restore the resistance and gradually increase, ultimately affecting its effectiveness. At the beginning of operation, unexpected situations often occur, such as abnormal temperature, pressure, moisture, etc., which can cause damage to the new device.
7. The failure of the rubber diaphragm of the flushing valve is a common fault, which directly affects the 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 should be cleaned regularly to prevent malfunction of the moving mechanism and blockage of the filter bag.
8. 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. The use of dust removal filter bags can not only achieve excellent dust removal effects, but also extend the service life of dust removal filter bags, thereby saving costs for enterprises.
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