The working principle of centrifugal
filter is to separate the sand and other heavy impurities from the
water with the centrifugal force generated by high-velocity flow,
and so the centrifugal filter can be mainly applied for the
preliminary filtering of water flow with sand. It is made by
welding the steel plates, and composed of two parts: the upper
centrifugal shell and lower sand collection tank. If it is used to
filter sand impurity of larger than **0 meshes, the separation
effect can reach about *5%, and the head loss is within 3.**7.7m.
If the water contains some organics or impurities lighter than the
water, the separation effect will be very low. Under unstable water
flow, i.e. the period between the commence and termination of
pumping, the filter effect is unsatisfying, therefore the
centrifugal filter shall be used in combination with screen
filter.
