hvordan man vælger et sandfilter til swimmingpool

Fiberglass Sand Filters & #39; working theory: & nbsp;

Sand filter is used to eliminate the small dirt in the pool. The filter sand, as the medium to remove the dirt, is filled in the cavity of the filter. When the control valve is turned to the & quot;filter & quot; position, the pool water containing suspended dirt particles is pumped into the filter pipeline, and then led to the water outlet of the filter. The pool water passes through the filter, and the tiny dirt is collected and filtered & nbsp; by the sand bed. The filtered clear water is returned to the swimming pool by the pipe at the bottom of the filter. The whole program is continuous and automatic, and provides a complete circulation process for the pool filter and piping system.

Efter en periode med brug blokerer den akkumulerede snavs vandstrømmen og svækker den. Rengør filteret på dette tidspunkt. For eksempel når ventilen på 0 010010 nbsp; filter 0 010010 nbsp; er vendt til 0 010010 quot; backwash 0 010010 quot; i position, vil vandstrømmen vende tilbage til den modsatte strømning, og vandstrømmen når direkte til bunden af ​​filterkammeret, og derefter genoverføres det gennem sandlaget, og den tidligere indsamlede snavs og rester skylles ud fra afløb udløb. Efter hver tilbagevask skal ventilen drejes til 0 010010 quot; skyl 0 010010 quot; position, åbn Tænd for vandpumpen i 0. 5 til 1 minut, og vend den derefter til 0 010010 quot; filter 0 010010 quot; position, og genstart den normale filtrering.

Beskrivelse af flervejsventilfunktion:

1. Filter (normal filtration)

2. Backwash (back wash, discharge the dirt in the filter)

3. Rinse (after backwashing, the waste discharged into the sewage pipe)

4. Waste (direct drainage without filter)

5. Recycle (without filter circulation)

6. Closed (turn off filter device)

Den endelige strømning af filtersandcylinderen er relateret til følgende faktorer:

1、 The flow rate of the pressurized water pump (which plays a decisive role);

2、 Filtering area (the larger the filtering area and the smaller the relative resistance, the finer sand can be put to improve the filtering accuracy);

3、 The thickness of sand layer (the greater the thickness of sand layer, the higher the filtration);

4、 The diameter of the pipe (the larger the diameter, the smaller the relative resistance and the larger the flow).

It can be concluded from the above that the deep filtering sand tank can greatly improve the filtering accuracy if not pursuing the flow. & nbsp;

& nbsp;As a whole, the flow rate is inversely proportional to the filtering accuracy. & nbsp; In fact, the flow parameters of the filtering sand tanks are the maximum values that can be achieved in an ideal state (no sand layer resistance), generally larger than the actual flow. If users want to get a larger flow, they should choose a larger sand filter. Only in this way can we avoid the waste caused by the flow mismatch with the pump.