Maintaining the bag filter not only enables the operation of the bag filter, but also prolongs its service life and realizes the benefits. However, many enterprises that fail are mostly because they do not know much about the daily maintenance of the bag filter, or they don’t know enough. Thorough results result in improper maintenance and damage to the bag filter, which affects production efficiency.
1. Always check the operation of control valves, pulse valves, and timers. The failure of the pulse valve rubber diaphragm is a common fault, which directly affects the cleaning effect. The equipment belongs to the external filter type, and the skeleton is installed in the bag. It is necessary to check whether the parts of the fixed filter bag are loose, and whether the tension of the filter bag is appropriate. Whether the support frame is smooth to prevent wear of the filter bag. The cleaning is done with compressed air. Therefore, it is required to remove oil mist and water droplets, and the oil-water separator must be cleaned frequently to prevent malfunction of the moving mechanism and blockage of the filter bag.
2. Prevent condensation. In 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. Because the outer casing often leaks air, so that the gas temperature in the bag chamber is lower than the dew point, the filter bag will be damp, so that the dust is not loose, but sticks to the filter bag, and the fabric holes are blocked, resulting in clear The ash fails, so that the pressure drop of the dust collector is too large to continue to operate, and some of the glue bags can not be dusted. To prevent condensation, the gas must be maintained throughout the system within the precipitator and above its dew point temperature is 25 ~ 35 ℃, in order to ensure good effect of the filter bag.
3, to prevent dust removal efficiency
(1) Blocking the air leakage, especially blocking the air leakage from the dust discharge port of the dust collector. Because there is a large amount of slowly falling dust in the ash hopper of the precipitator, the upstream air leakage airflow causes the secondary flying of the falling dust to be repeated for several times, so that the dust leakage in the ash discharge device can double the dust concentration in the dust collector. Higher than the dust concentration of the intake air, this deteriorates the working conditions of the bag filter and affects the dust removal efficiency of the bag filter.
(2) Prevent the airflow inside the dust collector from being short-circuited. Because the dust source gas has a high dust concentration (such as 20 g / m3), even if only 1% of the short circuit escapes, it will exceed the discharge standard. Dust-free gas escapes directly from certain gaps without passing through the filter bag, which is not allowed.
X Ray Lead Glasses,Medical Ray Lead Glasses,X Ray Lead Protective Eyewears,X-Ray Radiation Leaded Protective Eyewear,Protective Leaded Eyewear
Longkou Kangxie Medical Instrument Co., Ltd , https://www.lkkangxiemedical.com