The GX Series Rotary Mechanical Bar Screen is a continuous-duty fine screening system for municipal and industrial wastewater headworks. Featuring stainless steel rake teeth, dual overload protection, and a self-cleaning brush discharge mechanism, it reliably removes suspended solids, rags, plastics, and fibrous debris — protecting downstream pumps, valves, and biological treatment processes.
Zhongsheng Environmental's GX Series Rotary Mechanical Bar Screen provides robust, continuous solids interception at the headworks of any wastewater treatment facility. Installed at the inlet channel, the rotating rake-tooth chain captures floating and suspended debris — rags, plastics, leaves, fibrous material, and other coarse solids — preventing blockages in downstream pumps, valves, aeration systems, and biological reactors. Built for 24/7 unattended operation with minimal maintenance, the GX Series is trusted in municipal sewage plants, industrial pretreatment facilities, and stormwater overflow systems across four continents.
The GX rotary bar screen consists of a rigid frame, rake-tooth chain assembly, drive mechanism, overload protection system, and discharge unit. The lower section of the screen is submerged in the inlet channel, where the stationary bar rack intercepts debris carried by the influent flow.
The motorized rake-tooth chain travels upward along guide rails on the upstream face of the screen, collecting captured solids as it ascends. At the top of the travel, the rake teeth invert as they pass over the drive sprocket, and the accumulated debris falls away under gravity — assisted by a rotating brush mechanism that scrubs the teeth clean. Screenings are discharged into a collection bin, screw conveyor, or wash press for dewatering and disposal.
The reduced flow velocity as water passes through the screen promotes natural sedimentation of heavier particles, while the continuously moving rakes prevent blinding and maintain consistent headloss across the screen face.
| Model | Screen Width (mm) | Effective Width (mm) | Motor Power (kW) | Channel Width (mm) |
|---|---|---|---|---|
| GX800 | 800 | 600 | 0.55 | 850 |
| GX1000 | 1,000 | 800 | 0.75 | 1,050 |
| GX1200 | 1,200 | 1,000 | 0.75 | 1,250 |
| GX1400 | 1,400 | 1,200 | 1.5 | — |
| GX1500 | 1,500 | 1,300 | 1.5 | 1,550 |
| GX1600 | 1,600 | 1,400 | 1.5 | 1,650 |
| Parameter | Specification |
|---|---|
| Installation Angle | 65° – 80° |
| Bar Spacing (Rake Tooth Gap) | 3 – 20 mm |
| Rake Tooth Pitch | 100 mm |
| Discharge Height | 800 mm above channel top |
| Chain Speed | 2.2 m/min |
| Rake Tooth Material | 304/316 SS, Nylon, or ABS |
| Frame Material | Carbon steel (hot-dip galvanized) or stainless steel |
The GX Series combines industrial-grade durability with low total cost of ownership. Stainless steel rake chains, dual overload protection, and the unique rotary brush discharge system ensure reliable, round-the-clock screening with minimal operator intervention. Available in six standard widths — and custom sizes on request — the GX screen integrates seamlessly into existing channels or new-build headworks. Zhongsheng provides complete application engineering, including hydraulic sizing, structural anchorage design, and integration with SCADA/PLC control systems.
3mm to 20mm, configurable for fine or coarse screening applications.
Models from GX800 (800mm) to GX1600 (1,600mm nominal width), with effective screen widths from 600mm to 1,400mm.
Low-energy design: 0.55 kW for GX800–GX1200 models, 1.5 kW for GX1400–GX1600 models.
Rake teeth, chains, and shafts in SS304/316 stainless steel; optional nylon or ABS engineering plastic rake teeth for specific applications.
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