Filter sand bar, also known as sand core filter, or 304 steel plates with
1cr18Ni9Ti sealed containers and made of ceramic sand filter rod
combination package. The upper and lower filter layer, placed
between a piece of impermeable plate. (Also known as disk plate,
oliveri) riser plate that is fixed filter rod of the device,
erection of liquid (including water) boundaries of the role before
and after filtration.