Contra Shear Drum Screen
Internally Fed Rotary Fine Screen with Wedge Wire Screening Surface
Contra Shear Drum Screen
GX Contra Shear Drum Screen is an internally fed rotary fine screen designed for continuous separation of solids from liquid streams. The rotating drum screen uses a precision wedge wire screening surface to provide efficient fine solids capture, reliable screening performance, and continuous operation.
The drum can be engineered with different screen openings, diameters, lengths, materials, and discharge configurations to meet specific wastewater, industrial filtration, and solids-liquid separation requirements.
Contra Shear Drum Screen for Continuous Fine Screening
The Contra Shear Drum Screen is a continuous rotary screening machine designed to remove suspended solids and larger particles from liquid flows. Unlike static screening equipment, the rotating drum continuously presents a clean screening surface to the incoming flow, helping maintain stable screening performance.
As an internally fed rotary fine screen, the influent enters the inside of the rotating drum. Liquid passes through the wedge wire screen surface while retained solids are conveyed toward the discharge end by the rotating drum and internal conveying action.
GXFilter manufactures custom rotating drum screens using wedge wire technology for wastewater treatment, industrial process water, food processing, pulp and paper, and other solids-liquid separation applications.
What Is a Contra Shear Drum Screen?
A Contra Shear Drum Screen is a rotary screening system that separates solids from liquid by feeding the process flow into a rotating cylindrical screen. The screening surface is commonly manufactured from wedge wire, providing continuous slots and a smooth profile for efficient solids capture.
The term "contra shear" refers to the interaction between the rotating screening surface and the retained solids as material moves along the drum. This operating principle can help reduce blinding and maintain effective separation during continuous operation.
- Influent enters the drum: The liquid containing suspended solids enters the internal chamber of the rotating drum.
- Liquid passes through the screen: The liquid flows through the precision wedge wire slots while particles larger than the selected opening are retained.
- Drum rotates continuously: Rotation continuously moves the screening surface and retained solids toward the discharge area.
- Solids are conveyed: Retained material is transported along the drum and separated from the filtered liquid.
- Filtered liquid exits: Screened liquid passes through the drum surface and leaves the screening chamber.
Contra Shear Drum Screen Technical Specifications
| Parameter | Specification |
|---|---|
| Screen Type | Contra Shear Drum Screen |
| Screen Configuration | Internally Fed Rotary Drum |
| Screen Media | Wedge Wire Screen |
| Slot Opening | Customizable according to application |
| Drum Diameter | Custom |
| Drum Length | Custom |
| Material | SS304, SS316, SS316L and other materials upon request |
| Flow Direction | Inside-to-outside filtration |
| Installation | Custom according to equipment design |
| Manufacturing | OEM / Custom Fabrication |
Wedge wire is widely used for industrial screening because its continuous slot geometry provides controlled openings and a smooth surface. When fabricated into a cylindrical screen, wedge wire can provide a rigid and durable screening surface for continuous rotary operation.
For rotating drum screens, the screen surface must withstand mechanical rotation, hydraulic loading, and continuous contact with retained solids. Wedge wire construction provides the structural characteristics required for many demanding screening applications.
What Information Do We Need for a Rotary Drum Screen Quote?
To recommend or manufacture the correct Contra Shear Drum Screen, please provide as much of the following information as possible:
- Required slot opening
- Drum diameter
- Drum length
- Screen material
- Flow direction
- Existing equipment drawing, if available
If some information is unavailable, simply send us your existing screen drawing, photos or equipment model. Our engineering team can review the available dimensions and requirements.
Contra Shear Drum Screen FAQ
A Contra Shear Drum Screen is a rotating cylindrical screening system designed for continuous solids-liquid separation. In an internally fed configuration, liquid enters the inside of the rotating drum and passes through the wedge wire screen surface while solids larger than the selected slot opening are retained and conveyed toward the discharge area.
An internally fed rotary fine screen receives the influent inside the rotating drum. The liquid then passes outward through the cylindrical screening surface while retained solids are transported along the drum. The final design and performance depend on screen opening, drum dimensions, flow rate, solids loading and process conditions.
Yes. GXFilter can manufacture custom wedge wire rotary drum screens according to customer drawings, dimensions or technical requirements. Drum diameter, length, slot opening, stainless steel grade, support structure, flanges and other components can be customized for OEM and replacement applications.
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Get a Custom Contra Shear Drum Screen Quote
Looking for an internally fed rotary fine screen, wedge wire drum screen or rotary drum filter for your industrial application?
Send GXFilter your required screen opening, drum dimensions, material requirements or existing equipment drawing. We can manufacture a custom Contra Shear Drum Screen for your application.