Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1985-09-11
1987-04-07
Cintins, Ivars
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 90, 210270, 210272, 210273, B01D 2324
Patent
active
046559086
ABSTRACT:
The present invention relates to a device for cleaning of liquids in sand filters of the up-stream type. The device according to the invention is characterized in that a sand filter bed (5) is arranged in the form of at least one ring-shaped element, which possibly is arranged on either side of a feeder channel (3) in which the devices (8) are suspended in a rotating continuously travelling bridge (11) for take-up of sand, which is arranged to be cleaned in a multi-stage cleaning device (9) and returned to the upper surface of the sand filter bed (5), which is applied in order to smooth out the sand by means of a scraper device (13) which is incorporated in the bridge (11) which possibly is multi-armed and then equipped which several take-up devices (8) of which some are designed as scrapers or flushing nozzles (13) in addition to which introduction of the liquid for filtration is arranged from a chamber (1) via feeder pipes (2' and 2") or via a separate feed-in line (1) directly or via the feeder channel (3) to the distribution troughs (4', 4", 4'") in the sand bed (5) where the clean water is collected via a trough (6) and discharged via an outlet (7) in connection with which perforated probes (12' and 12") are inserted in the sand filter bed (5) to monitor circulation and cleaning.
REFERENCES:
patent: 2086829 (1937-07-01), Streander
patent: 2339084 (1944-01-01), Lose
patent: 2715964 (1955-08-01), Martin
patent: 4482457 (1984-11-01), Jacquet
Cintins Ivars
Stubinen Utreckling AB
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