Flow is introduced at the center of the unit and is distributed by means of two or more rotating arms with orifices and spreaders. Hydraulic power created by the reaction of the jet-like streams escaping from the orifices is sufficient to rotate the machine. A spreader is provided at each orifice to uniformly distribute the flow in the thinnest possible sheet over the entire filter area.
The general type of rotary distributor recommended is determined by the proper combination of flow and head requirements. Center assembly designs are suitable for standard or high rate applications, with or without flow control features. Distributor arms are of circular pipe construction or may be fabricated from steel plate with single or multiple compartments.
The EIMCO-K.C.P Rotary Distributors are furnished for all bed sizes and with center inlet diameters from 8 in. to 54 in. Feed arrangements may be above or beneath the filter floor depending on media depth and flow transition requirements. The height of the center well is varied according to the head required and support for the distributor arms is provided by either tie rods or trusses.
SINGLE AND DOUBLE COMPARTMENT FOR VARIOUS FLOW AND HEAD CONDITIONS
The EIMCO-K.C.P Rotary Distributors are furnished with one of two center assembly designs. These include a basic standard or high rate assembly with no internal flow division features, and a high rate assembly with an internal annular weir for flow division.
SINGLE AND DOUBLE COMPARTMENT PIPE OR RECTANGULAR TYPES
The EIMCO-K.C.P Rotary Distributors are available with circular pipe arms, fabricated rectangular arms or fabricated rectangular multiple compartment arms. The diameter of the filter, the influent flow and the available hydraulic head will normally determine the type of arm to be used.
TURNTABLE BEARING, BASE CASTING, SEAL AND SPREADERS
Reliability and simplicity of the main bearing assembly are the key operating features of EIMCO KCP Rotary Distributors. The lower turntable type bearing is used on all distributor mechanisms, regardless of size. The large diameter ball bearings with hardened races are located close to the media face for stability against tilting.
The bearing runs in an oil bath. The only required maintenance is the seasonal oil change (where weather conditions require) plus occasional checking to maintain the proper oil level as indicated on a sight gauge.
The stationary base and revolving turn- table are of sturdy cast iron construction and are free of projections in the bottom center inlet opening which might obstruct the flow. Clearance between the turntable and base
is kept to a minimum. This guard against the possibility of the mechanism tipping.
A neoprene seal is provided to prevent leakage between rotating and fixed parts. This seal is economical, has a long life and requires no maintenance or special attention. The seal plate is readily accessible and easily replaced.