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The structure and working principle of bag filter

作者:admin  点击:64  发布时间:2024-11-28

The bag filter is a pressure filter device, which mainly consists of filter cylinder, filter cylinder cover and quick opening mechanism, stainless steel filter bag reinforcement net and other main components. The filtrate flows into the filter bag from the side inlet pipe of the filter shell. The filter bag itself is installed in the reinforcement basket. The liquid penetrates through the filter bag of the required fineness grade to obtain qualified filtrate, and the impurity particles are intercepted by the filter bag. The machine is very convenient to replace the filter bag, and there is basically no material consumption during filtration.


Bag filter has many advantages such as reasonable structure, good sealing, strong circulation ability and simple operation. In particular, the filter bag has a small chance of side leakage, which can accurately ensure the filtration accuracy, and can quickly replace the filter bag, which reduces the operating cost. The inner and outer surfaces of the filter are treated with mechanical sandblasting and polishing, which is even and easy to clean. We know that the filtering method adopted by the bag filter is the side-in and side-out method, and the side-in and bottom-out method can also be adopted. The filtering liquid medium is pressed or pumped into the bag filter barrel through the pressure in the pipeline. The liquid medium to be filtered is filtered by the filter bag supported by the filter basket through the electropolished punching support. The changed solid and liquid reach the result of the liquid medium being filtered.


The structural design of the bag filter is to seal and lock the top cover and the filter cartridge with four sets of pendulum-type ring bolts, so that the filter can better withstand high filtering pressure and water hammer pressure shock. The bag filter consists of a filter cartridge, a filter basket, and a filter bag. The structure is compact and simple; the liquid to be filtered enters through the filter inlet, flows into the filter bag, and flows out from the filter outlet after being intercepted by the filter bag. The inlet and outlet design of the bag filter generally adopts the side-in and bottom-out method, which is convenient for cleaning.


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