Automatic Wedge Bar Trash Rake Screen (Fine/Coarse, QLHZ) 1

Automatic Wedge Bar Trash Rake Screen (Fine/Coarse, QLHZ) 2

Automatic Wedge Bar Trash Rake Screen (Fine/Coarse, QLHZ) 3

Automatic Wedge Bar Trash Rake Screen (Fine/Coarse, QLHZ) 4

Automatic Wedge Bar Trash Rake Screen (Fine/Coarse, QLHZ) 5

Automatic Wedge Bar Trash Rake Screen (Fine/Coarse, QLHZ)

Picture a dawn-lit river intake where the QLHZ Automatic Wedge Bar Trash Rake Screen stands like a vigilant guardian, its fine-to-coarse wedge bars catching every leaf, twig, and plastic drift with quiet precision. As water passes through, the self-cleaning rake glides automatically, clearing debris and protecting pumps and pipelines so plants run smoother and maintenance crews breathe easier. Rugged, energy-smart, and reliable, this screen turns messy intakes into calm, efficient waterways with minimal fuss.

brand name:

QILEE

Shipping:

Support Sea freight

Payments:

L/C,D/A,D/P,T/T,Western Union,MoneyGram,OA

Lead Time:

1-1(sets):60(days),>1(sets):To be negotiated(days)

Place of Origin:

China

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Slag discharge, high(mm)

400~1200(The order is not specified by 800)

Setting angle a( ° )

60°,65°,70°,75°,80°(The order is not specified by 75°)

Rake the tooth movement speed(mm)

2m/min

Article gate interval(mm)

1,3,5,10,20,30,40,50

Device width(mm)

300

Depth of channel(mm)

400

Processing Type

desalination

Power(W)

1 kW

Product name

Trash Rake Bar Screen

Voltage

220 V, 380 V

weight (kg)

1000

productivity

500L/Hour

warranty

1 Year

place of origin

Shanghai, China

Automatic Stainless Debris Removal

The QLHZ Automatic Wedge Trash Rake Bar Screen provides continuous, automatic debris capture and high-efficiency solid–liquid separation to protect pumps and downstream processes. Its compact, low-noise design uses corrosion‑resistant materials (stainless steel, ABS or nylon teeth), a wedge tooth profile and selectable bar gaps to deliver durable, low‑energy operation with straightforward electrical automation. Packed in standard export cartons and offered with customizable channel widths, rake materials and control‑box options plus 3–20 day delivery, this Bar Screen is tailored for fast, reliable site installation.

Automatic Adjustable Wedge Screen

The QLHZ Automatic Wedge Bar Screen is an automatic Bar Screen offered in fine and coarse wedge configurations, constructed from corrosion‑resistant materials (stainless steel, nylon or ABS) with a compact, low‑noise drive that minimizes energy use. It provides continuous, self‑clearing debris removal to protect pumps and downstream processes in municipal and industrial wastewater and solids–liquid separation applications, improving separation efficiency and lowering maintenance costs. The toothed chain and enclosed gear design lift and convey screenings through staggered rake teeth that promote gravity‑assisted drop‑off (with optional brushes for stubborn material), and a range of model sizes, channel depths, bar spacings and lift angles allows customization to flow, lifting height and particle size requirements.

Automatic Wedge Bar Screening

The QLHZ Automatic Wedge Trash Rake Bar Screen provides continuous coarse and fine screening for sewage plants, water supply facilities, pumping stations and industrial wastewater applications such as textiles, pulp and food processing. Its compact, corrosion‑resistant design with ABS, nylon or stainless steel rake teeth and a chain‑lift tooth mechanism enables low‑noise, low‑energy operation with continuous debris removal and high separation efficiency. Models and bar spacing are customizable to channel depth, flow and lift requirements, with optional cleaning brushes and standard electrical control for automated operation.

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Automated Precision Debris Removal

Built by QLHZ with decades of hydraulic engineering experience, the Automatic Wedge Bar Trash Rake Bar Screen blends precision-welded wedge bars and robust drive mechanics to deliver reliable, low-maintenance screening for municipal and industrial waterways. Its automatic rake and fine/coarse wedge configurations provide continuous, clog-resistant debris removal, high flow capacity, adjustable screening apertures and gentle conveyance of solids while minimizing energy use and operator intervention. Key features and advantages include self-cleaning operation, corrosion-resistant materials, modular construction for quick installation and servicing, adjustable spacing for varied debris sizes, and a compact, high-efficiency drive that extends service life and reduces downtime.

Material introduction

The Automatic Wedge Bar Trash Rake Screen (QLHZ) uses rake teeth made from ABS engineering plastic, nylon, or stainless steel assembled on a specially formed chain to ensure wear resistance and reliable debris conveyance. The main body material is specified at order to suit site conditions, with stainless steel commonly chosen for enhanced corrosion resistance in sewage and industrial wastewater. These material selections produce a corrosion‑resistant, low‑noise Bar Screen that pairs lightweight plastics for gentle handling with robust metal components for long service life.

◎ Corrosion resistant steel

◎ Lightweight wear resistant

◎ Heavy duty stainless

FAQ

What is an Automatic Wedge Bar Trash Rake Screen (Fine/Coarse, QLHZ) used for?

It is a mechanical screening device installed at water intakes, channel entries, pump stations and headworks to remove floating and suspended debris (rags, plastics, leaves, sticks, large grit) from raw water or wastewater. The automatic rake continuously cleans the wedge-shaped bars to protect downstream equipment (pumps, valves, heat exchangers, grinders) and to reduce manual cleaning frequency. Fine and coarse options allow selection of appropriate bar spacing for different debris sizes and flow conditions.

How do I choose between the fine and coarse wedge bar configuration?

Choose coarse wedge bars (larger spacing) when the main concern is large debris and you need higher flow capacity with lower head loss — typical for stormwater, irrigation canals and some industrial intakes. Choose fine wedge bars (smaller spacing) when you need to capture smaller solids to protect sensitive downstream equipment or to reduce load on secondary treatment in wastewater plants. Consider debris characteristics, allowable headloss, required capture size, and cleaning frequency when selecting.

Where are the common application scenarios for the QLHZ model?

Typical applications include municipal wastewater treatment plant influent channels and pump stations, stormwater conveyance and detention outlets, industrial cooling water intakes and process water lines, hydroelectric and small hydropower intakes, landfill leachate systems and irrigation canals. The QLHZ model is commonly used where automated continuous cleaning is needed to keep flow paths clear and protect downstream processes.

How is the device operated and what automatic features should I expect?

The automatic rake mechanism is driven electrically or hydraulically and controlled by sensors or a PLC. It detects debris accumulation and automatically cycles the rake to lift and discharge collected material into a disposal hopper or conveyor. Expected features include adjustable cleaning cycles, overload protection, limit switches, level or torque sensors for automatic stop/start, remote monitoring capability and safety interlocks.

What routine maintenance and troubleshooting are required to keep it working reliably?

Routine maintenance includes daily or weekly visual inspections, clearing any oversized debris from the discharge area, monthly lubrication of bearings and drive components, periodic tensioning or inspection of chains/gearboxes, and annual electrical/control system checks. Troubleshooting steps: if raking stops, check power supply, motor overload/reset, limit switches and torque sensors; inspect for jammed debris or damage to teeth, bars or chain; verify PLC settings and emergency stop. Keep common wear parts (rake teeth, chains, bearings, seals) on hand for quick replacement.

What safety, installation and retrofit considerations should I be aware of?

During installation, ensure proper anchoring, alignment to channel geometry and adequate clearance for discharge and access. Provide guarding around moving parts, lockout-tagout procedures, and operator training before commissioning. For retrofits, verify channel dimensions, flow capacity and headloss allowances; confirm structural supports and space for the rake travel and hopper. Design for an emergency bypass or overflow path in case of severe blockage and follow local regulations for screened solids handling and disposal.

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