The structural design of the bag filter is to seal and lock the top cover and the filter cartridge through four sets of swing ring bolts, so that the filter can withstand high filtration pressure and water hammer pressure impact. The bag filter consists of a filter cartridge, a filter basket and a filter bag. The structure is compact and simple; the filtered liquid enters through the inlet of the filter, flows into the filter bag, and flows out from the outlet of the filter after being intercepted by the filter bag. How should we understand the fundamental precautions in such an environment?

The inlet and outlet design of the bag filter generally adopts a side-in and bottom-out method, which is convenient for cleaning.

It is simple and quick to replace the filter bag. In one step, first close the water inlet valve and open the exhaust valve to let the pressure in the filter drop to normal pressure;

In the second step, open the four sets of eye bolts on the top cover and open the top cover;

The third step is to open the retaining ring that fixes the filter bag, remove the clogged filter bag, and replace it with a new filter bag;

The fourth step is to close the top cover and lock the four sets of eye bolts; the fifth step is to open the water inlet valve and close the exhaust valve when liquid flows out from the exhaust valve.

The total process is generally completed in about 10-15 minutes.

Filter maintenance: Generally, when the pressure difference of the filter reaches 2-3 kg, it proves that the filter bag is basically blocked. At this time, there is very little liquid flowing out of the filter outlet, and the filter bag should be replaced at this time. According to different conditions of use, if the process requires that the flow of the filter is not lower than half of the maximum flow, the filter bag should be replaced when the pressure difference reaches about 1 kg. The service life of the filter bag is determined by the turbidity of the raw water, the filter time, the filter flow rate, and the filter area of the filter bag.

Be prepared to warn: After opening the lid, the falling lid will hurt your hands.

1. First of all, please confirm whether the accessories required for installing the bag filter system are ready:

①Bag filter body ②O seal ring ③Metal inner screen ④Filter bag ⑤Two pressure gauges (optional)

2. Check the O-shaped sealing ring and the O-shaped groove on the filter, please replace with new accessories.

When installing, please follow the steps below:

1. Place the bag filter on the station to be filtered, connect the inlet and outlet flanges or pipe teeth, and fix it; block the exhaust port, or configure an exhaust valve. Jacket type is connected to the heat preservation heat source.

2. Gently put the metal inner net into the bag filter so that the neck of the inner net matches the mouth of the bag filter.

3. Place the filter bag so that the ring opening of the filter bag coincides with the neck opening of the metal inner mesh.

4. Put the O-shaped sealing ring into the O-shaped groove. The O-shaped sealing ring can not be twisted or deformed. The multi-bag filter machine buckles the filter bag pressing ring.

5. Hold the handle of the upper cover with one hand and the other end of the upper cover with the other hand (turn the top handwheel of the multi-bag filter)

6. After the upper cover is aligned, tighten the two diagonal lifting caps at the same time, and tighten all the lifting caps one by one (insert a short stick into the lifting ring to tighten).

7. Close the exhaust valve installed on the top of the bag filter.

8. Please check whether the connecting pipes are firm; whether the working pressure is within the allowable range.

9. Open the output valve. Open the heat source inlet valve, the temperature of the filter rises to the specified temperature.

10. Open the input valve slowly and let the liquid slowly flow into and fill the filter to prevent the liquid from suddenly impacting the filter bag and causing rupture, and then observe whether there is any leakage. If there is no leakage, you can start filtering.

The above is the operation steps and precautions of the bag filter. If necessary, everyone is welcome to come to consult!