Filtr torbalarının qırılmasına hansı amillər səbəb ola bilər?

1. Design and selection reasons

Wrong selection of filter bags can also cause filter bags to break, such as chemical corrosion between the material of the filter bag and the filtered liquid, and thermal corrosion when the working temperature of the application exceeds the tolerance temperature of the filter bag. It is also possible that the concentration of mechanical impurities in the liquid is too high, the number of filter bags is insufficient, and the apparent dirt holding capacity of the filter bag is not reached in a short time. If the liquid flow is large but the inlet and outlet sizes of the filter are small, the flow rate of the liquid through the filter bag will be too fast, exceeding the liquid flux and rated flow of the filter, which will cause the filter bag to break.

2. Improper operation

When installing the filter bag, the filter bag may have pinholes due to the operator picking up the filter bag and touching sharp objects during installation. At the same time, when the filter bag is placed in the bag filter, if the filter bag support basket is not installed on the outside of the filter bag, the filter bag has no support, or the operator does not smooth the filter bag when the support basket has been installed, these will cause the filter bag to break.

3. Use of filter bag with overpressure difference

As the filtration goes deeper, impurities will stick to the surface of the filter bag or penetrate into the internal gaps of the filter material, causing the flow resistance to increase and the pressure drop inside and outside the filter bag to increase. When it reaches a certain level, the filtration cannot continue. At this time, we should replace the filter cloth. If the pressure difference of the filter bag replacement is too high, the risk of the filter bag breaking will increase, and it is very likely that even if the filter bag is not broken, many impurities will be detected in the filtered liquid, and the filtration efficiency will be reduced. Because the high pressure difference will squeeze the impurities that have been intercepted. Therefore, we should replace the filter cloth after testing in combination with the actual situation of the filtration application under the recommendation of the manufacturer.

4. Accessory mismatch

The filter float is a hollow ball, which is an accessory of the filter and is installed inside the filter bag to replace the filtered liquid. Especially in applications where the filter is used for intermittent filtration such as filling filtration, or where the filtration product is frequently switched, there are many fluid shut-off and liquid purge operations, which will have an impact on the float in the filter bag. The floats produced by many manufacturers are relatively small in size, and there is no collar that matches the filter bag and filter, resulting in the entire float being inside the filter bag. If it shakes, it will cause pulling and friction on the filter bag material, which will cause the filter bag to break.

Therefore, when using the filter bag, we must follow the manufacturer's instructions and use it according to our actual situation to avoid the filter bag from breaking due to improper operation.