Bag filter is a versatile filter device with a wide range of applications and adaptability. Especially, the side leakage rate of the filter bag is small, and the structure of the bag filter is novel and reasonable, the sealing performance is good, the circulation ability is strong, and the operation is simple and so on. Can accurately ensure the accuracy of filtration, and can quickly replace the filter bag, filter basically no material consumption, making the operating cost reduced. Bag filter is suitable for liquid fine filtration in alcohol, beverage, food, viscose, resin dye, ink and oil products, chemicals and other industries. The filter fineness is ensured by the filter bag, no sample retesting is needed in the middle, and the supporting pump can be assembled on the mobile cart and can be moved to any production line for filtering.
Common problems with bag filters in use:
1. When to replace the filter bag?
There are two ways to determine when to replace filter bags in practical applications:
1) Roughly determine the replacement time based on experience.
2) Pressure gauges are installed on the inlet and outlet pipes of the bag filter, and the time for replacing the filter bag is determined by the pressure difference shown by the front and rear pressure gauges. Generally, the pressure difference the filter bag can withstand is 0.5 to 1 kg/cm2. Left and right, when the pressure difference reaches this range, the filter bag should be replaced in time to avoid the rupture of the filter bag, affecting the filtering effect, and not due to minor losses.
2. Gradual filtering
Bag filters installed in series can achieve step-by-step filtration.
If installed in the front of the filter for high-precision filtration, it can greatly reduce the cost of filtration. Similarly, filtration methods such as sand filtration can be combined with bag filtration to further improve the filtration quality and reduce the cost of filter bags.
Combining the self-cleaning machine, centrifugal type and bag filter, we can use it alone or in series with other principle filters to achieve the desired effect.
3. How to achieve continuous filtering?
The parallel installation of the bag filter can ensure the continuity of the filtration, or increase the flow, as shown in parallel installation, replace the filter bag alternately to maintain continuous filtration.