K-PACK Rake Screen


Rake Screens are applied for separating solids from process- and waste water. K-Pack Rake Screens are robustly built and require minimum of maintenance and attention. The raw waste water flows through a channel in which the Rake Screen is installed. Special stainless steel combs move through the rake consisting of a number of vertical bars, located at 5 mm from each other. The combs slowly move upwards thus lifting any coarse materials to the surface and from there they can be dumped into a container or dewatered. Due to its construction the screen operates entirely clog free. 


GREEN-TECH is in association and have the technical support of REKO Industrial EquipmentB.V. in the Netherlands. 

REKO screens are uncomplicated devices for the separation of solids from process and waste water flows. The REKO screens are distinguishable from others by the unique "shear" effect, continuous operation and simple construction. The benefit being high capacity for a low investment.

Working principle of the REKO static screen


Liquid is fed either by gravity or pump pressure via the admission chamber over the full screen width, to pass over the curved slotted screen plate. As the screen is curved, the dynamic forces increase the screen capacity. A hinged partition ensures maximum usage of the screen and causes the liquid to reach the screen at an increased velocity. The clarified liquid passes through the slotted screen to flow to the outlet connection. The separated solid particles continuously slide down the screen surface to be collected in a container.

REKO internally fed rotary drum screen


The liquid enters the drum internally and is screened via the drum's slots (wedge wire/slots depending on size required). The liquid falls into a sump where it is gravity fed or pumped to the destination. The solids left inside the screen are fed out of the drum via an internal screw on the surface of the drum.

REKO externally fed rotary drum screens


The liquid is fed on the outside of the drum over the length of the drum to utilize the maximum surface area of the screen. Solids stay on the outside of the drum and is removed via a static scraping mechanism and collected for removal.


*Screens can be supplied with automatic cleaning or CIP

REKO dewatering press: impressively uncomplicated


To de-water, REKO has combined a screw conveyor without central shaft with a dewatering facility into one efficient installation: the REKO DEWATERING PRESS

The REKO shaft-less screw conveyor pushes the screenings forward into the press section, which comprises a drainage tube manufactured from slotted wedge wire and a spring tensioned hinged end discharge closure. The screw spiral terminates within the drainage tube and short of the end closure. Here a plug is formed, creating a resistance against the direction of the transported material. Under the influence of this resistance, liquid is pressed out in the drainage section and passes via the outlet connection to drain.

REKO screw conveyor without central shaft: a revolution in transportation


The REKO shaft-less screw is manufactured from cold rolled wear resistant stainless steel alloy. Since there is no central shaft there are many benefits to be gained, eg. No blockage due to materials winding round the shaft, no bearings and improved unrestricted throughput enabling gross solids to be readily transported.