Automatic hydraulic self-cleaning screen filter in Malaysia (Semenyih, Selangor)

Automatic hydraulic self-cleaning screen filter

Process principle of the automatic self-cleaning filter (a)

Water enters  into the  entrance. First,  the primary strainer  filters out  the larger  particles of

impurities,  and  then  reaches  the  fine  strainer.  In  the  process  of  filtering,  fine  strainer

gradually accumulates  impurity in  the water  and forms a  filter impurities  layer. Due  to the

accumulation of impurities layer formed inside the filter, the two sides of the fine strainer form

a pressure gradient. When the pressure gradient reaches the default value, self-cleaning will

begin. During the self-cleaning process, the cleaning valve opens, the hydraulic components

and  hydraulic  cylinder  motor  room  release  pressure  and  discharge  water,  causing  the

pressure  in  hydraulic motors  room  and  sewage  suction pipe  drops  sharply.  Due  to the

negative pressure effect, the dirt is absorbed by suction nozzle inside the fine strainer, enters

into the hydraulic motor room relaying on the hydraulic motors, and then discharges from the

sewage valve, thus finishes  a suction sewage process. When the flow  passes the hydraulic

motors, it drives  sewage suction pipe to  rotate whereas the hydraulic cylinder  piston drives

the sewage suction pipe for axial movement, sewage suction machine's axial movement and

rotation during  the  entire filter,  clean the  surface completely.  The entire  washing process

4 takes  several seconds;  sewage valve  closes  after the  washing.  Then, the  increased  of

pressure drives the  hydraulic cylinder piston back  to its initial  position, filter will prepare  for

the next wash  cycle. In the  washing process, the filter's  normal operating condition will  not

be interrupted.   

For more information or enquiry, please contact Environmech Sdn. Bhd.
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