The difference between the inner water inlet and the outer water inlet: the inner water inlet pipe directly leads to the inside of the drum, and the sewage passes through the inner surface of the screen and the solids and suspended solids are intercepted by the filter screen, and are rotated into the slag hopper through the drum.

The working principle of external water inlet:

The waste water enters the sump and overflows to the surface of the drum screen by means of overflow. The solids and suspended solids are retained by the screen and are scraped to the slag hopper by the scraper, and the filtered water is discharged through the pores of the screen to the water outlet. The drum fine screen is mainly used for the removal of small floating objects in the water in sewage treatment and industrial wastewater treatment projects. :

Usually, the fine screen of the external water inlet drum is limited by its structural form, and the filter grid drum can only be in the form of a wedge-shaped spiral mesh. The inner water inlet drum fine grid filter grid drum can use different filter materials according to different filtration needs, such as: wedge-shaped spiral mesh, punching plate mesh, stainless steel wire mesh, etc.

In the process of sewage treatment, the screen is a device used to remove those coarse suspended solids that may block the pump unit and pipeline valves, and the subsequent treatment facilities can operate normally. It can be divided into coarse screen, medium screen and fine screen.

With the continuous increase of the amount of pollutants intercepted by the fine screen, its importance has been increasingly recognized by people. Years of practice have proved that whether the selection of the fine screen is in line with reality directly affects the operation of the entire water treatment facility.

 

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