Bag filter is a common equipment for realizing solid-liquid separation, which is widely used in pharmaceutical, food, chemical and other industries. In recent years, with the development of economy and the advancement of science and technology, the bag filter industry has broad prospects for development. The working principle of the bag filter is pressure filtration. The bag filter is a new type of filter system. The filter bag is supported by a metal mesh basket inside the filter. The liquid flows in from the inlet and flows out from the outlet after being filtered by the filter bag. It is intercepted in the filter bag and can continue to be used after replacing the filter bag.

How do bag filters work?

The inside of the bag filter is supported by a metal mesh basket. The liquid flows in from the inlet and flows out from the outlet after being filtered by the bag filter. The impurities are intercepted in the filter bag and can be used continuously after replacing the filter bag. Through the filter bag, under the action of pressure, the raw liquid passes, the pollutants retained by the filter bag will be trapped in the filter bag and the filter residue will remain in the filter bag, and the filtrate will flow out along the wall of the metal supporting mesh basket, so as to achieve filtration. Purpose. The bag filter is often set after the pressure filter to remove the fine particles in the liquid to meet the requirements of the subsequent process for the water inflow.

Classification of bag filters

Single bag hoop type/single bag ring plate type: design pressure 0.4-1MPa

Compared with the top-entry single-bag filter, the single-bag hoop type and flat-plate filter have relatively low cost, and are suitable for work occasions with low requirements, such as raw water filtration, clarification of food and beverages, etc., 2, 3, 4 bag filter. The installation height is adjustable to meet the space requirements of specific applications.

Single bag elbow top entry: 0.4-1MPa

The elbow top entry type is a simple type derived from the mold top entry type. Solvents and various neutral liquids meet the most stringent process requirements of customers.

Single bag mold top entry: design pressure 0.7-1.6MPa

The mould top entry single bag filter adopts the most advanced precision casting mould top entry bag filter structure and is optimized for the best performance. It is the most popular and praised bag filter model on the market.

Multi-bag filter: suitable for large flow liquid filtration

From 2 bags to 24 bags, the specifications are complete, the inlet and outlet diameters are 3-18", and the maximum flow rate of a single machine: 90-1080 cubic meters per hour. It can provide a quick-opening design, and the filter bag replacement is very convenient. It can also be used for longer use. When the filter bag is replaced after time.

Bag filters have a wide range of applications. Bag filters are almost "universal". It can filter paints, paints and varnishes; it can filter solvents and viscous materials. The filter precision range is also very large. The structure is simple and compact, the volume is small, and the cost is low. Easy to operate and quick to replace the filter bag. Can be installed on a trolley for mobile use. High efficiency, the filter bag has a large filtering capacity and a large dirt holding capacity.​​

Conclusion

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