The working principle of the backwash filter operation

The working principle of the backwash filter operation:

The water enters from the inlet. First, it passes through the coarse filter to filter out various impurities of larger particles, and then reaches the fine filter. During the filtering process, the fine filter will gradually accumulate dirt and impurities in the water to form a filter impurity layer. Since the impurity layer is accumulated on the inside of the fine filter for a long time, it will be on the inner and outer sides of the fine filter. Then there will be a pressure difference.

    When the pressure difference of the filter reaches the preset value, it will start the automatic cleaning process. During this period, the clean water supply will continue to flow, the cleaning valve will open, the water pressure in the cleaning chamber and the dirt suction device will drop significantly, and the filter will pass. The pressure difference between the cylinder and the sewage suction pipe, the suction nozzle generates a suction force between the sewage suction pipe and the cleaning chamber, and a dirt suction process is formed. At the same time, the electric motor drives the suction pipe to make a spiral movement in the axial direction. The combination of axial movement and rotary movement of the dirt sucker completely cleans the entire inner surface of the filter. The entire flushing process only takes tens of seconds. The drain valve is closed at the end of cleaning. The filter is ready for the next flush cycle.

    effect:

    The automatic backwash filter can make industrial sewage meet the national wastewater discharge standards, which can effectively protect the environment, and it can also treat the sewage to a standard that can be reused. This not only solves the problem of sewage discharge, but also It can also be reused to save costs. The automatic backwash filter is a filter that directly intercepts impurities in the water, removes suspended solids and particles in the water body, reduces turbidity, purifies water quality, and reduces system dirt, bacteria, algae, rust, etc. , In order to improve the water quality and protect the normal working equipment of other equipment.

    Cleaning features:

    1. The automatic recoil sewage filter adopts multiple filter cartridges to filter, which has a large effective filtering area and small pressure loss. The designed filtration area is 3 to 5 times of the inlet and outlet area.

    2. The automatic backflushing sewage filter is easy to repair and maintain: it is equipped with a maintenance manhole, convenient to load and unload the filter cartridge, and backwash the filter

    3. The fully automatic recoil sewage filter adopts the structure of multiple filter cartridges to filter and filter cartridges to be cleaned one by one to provide uninterrupted water supply during cleaning.

    4. Fully automatic recoil sewage filter program control: various parameters of the system can be set according to the actual situation of the user on site.

    5. Advanced control system of the backwash filter: The control system has high accuracy, and its working mode and operating state can be adjusted according to different water quality to improve its ability to adapt to water quality.

    6. Convenient control method of backwash filter: pressure difference/time control at the same time or separately, can be selected according to actual working conditions and requirements, automatic operation; at the same time, manual/automatic switch is set, and the control method can be preset, and Can realize electrical interlock,

    7. The backwash filter is equipped with local control. If necessary, a remote control switch can be set to realize local operation and remote control operation.

    8. The backwash filter has functions such as running status output and fault alarm output to ensure that the equipment is used under safe and reliable conditions.

    The backwash filter has strong filtering capacity and large flow: the large flow "straight-through" filter used in large quantities in coal mines, due to structural limitations, the maximum flow can only reach 380L/min, the filter can reach 800L/min or more Big. Fully automatic filter, filter, full-process integrated water processor, electronic descaler, backwash filter, high filtration accuracy: there are two or more sets of filter elements in the backwash filter, with large flow area and small original pressure loss. To achieve large flow and high-precision filtration (25m, 40m), traditional filters are difficult to achieve. The backwash filter quantifies the degree of pollution: the filter can be equipped with pressure gauges K1, K2, P=K1-K2 at the inflow end Pi port and the outflow end Po port of the liquid, which quantitatively reflects the filter contamination To the extent that it is easy to clean at any time, the traditional filter has no secondary function.