KWS Manufacturing
KWS Environmental Loadout System No. 4 – Multiple Loading Bay Arrangement for Screw Conveyors

KWS Environmental Loadout System No. 4 – Multiple Loading Bay Arrangement for Screw Conveyors

A common application for disposal of sludge and grit/screenings is loading residuals into dumpsters or trucks for haulage to disposal. For many applications, the use of multiple screw conveyors for loading dumpsters or trucks is advantageous when compared to other conveying technologies.

A horizontal screw conveyor is located under multiple dewatering devices to convey residuals to an inclined or vertical screw conveyor. For any incline angle above 45-degrees a vertical conveyor is the best choice. The inclined or vertical screw conveyor transfers the residuals to a second horizontal screw conveyor. The second horizontal screw conveyor transfers the residuals to one or more distribution conveyors. The distribution conveyors then discharge residuals to dumpsters or trucks. The dumpsters or trucks remain in a fixed location while the residuals are evenly loaded. The distribution conveyors utilize multiple discharge points to aid in distributing solids.

The KWS Environmental Loadout System No. 4 is a simple and effective method of transferring residuals from multiple dewatering devices to multiple dumpsters or trucks. The multiple loading bay arrangement is very versatile and allows for the use of multiple dewatering devices as well as vertical lifts up to 30-feet. The dumpster or truck loading stations can also be located long distances from the dewatering devices, depending upon plant layout. The system creates redundancy with the use of multiple dumpster or truck loading areas. Both shafted and shaftless screw conveyors are ideal for the application.

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KWS Environmental Loadout System No. 4 – Multiple Loading Bay Arrangement for Screw Conveyors

Features

Robust Design and Construction – Screw conveyor components are designed with a large factor-of-safety for reliable operation. Drive units are designed for worst-case upset conditions to start the conveyor under the assumption the entire trough is packed with material, just in case a plug develops at the discharge.

System Redundancy – Transfer and distribution screw conveyors utilize slide gates to divert and discharge residuals to alternate loading bays and discharge points. The operator can choose the location of residual discharge, creating redundancy in the residual load out system.

Simplicity of Controls – Each screw conveyor and slide gate can be controlled using a main control panel or through interfaces from a remote panel or SCADA system. The multiple loading bay arrangement can be controlled automatically or manually, depending upon system requirements.

KWS Environmental Loadout System No. 4 – Multiple Loading Bay Arrangement for Screw Conveyors

Benefits

Reliable Operation – Screw conveyor designs ensure exceptionally long life under high load conditions. Downtime is eliminated because screw conveyors are designed for worst case operating conditions, such as the full rate of the upstream equipment in the case of the distribution conveyors.

Elimination of Downtime – Redundancy in the load out system eliminates downtime. If a particular load out bay is not functioning for any reason, another load out bay is available for residual load out. Redundancy can also be designed into the system by adding duplicate transfer and vertical screw conveyors.

Operational Flexibility – Multiple screw conveyors and slide gates are controlled with PLC-based control panels, allowing more flexibility to control parameters such as open/close position of gates, forward/reverse running of screw conveyors and timing of gates and screw conveyors. Once the system is tested and the parameters are set, dumpsters or trucks can be evenly loaded with a minimum of operator oversight.

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