Waste Trommel Screen

SINOLION MACHINERY is one of the most professional municipal solid waste sorting plant manufacturers and suppliers in China. Please feel free to buy durable municipal solid waste sorting plant for sale here from our factory. All machines are with high quality and competitive price.

Product Overview

A waste trommel screen uses a perforated cylindrical drum rotating on an inclined axis to size and separate heterogeneous solid materials. Material fed into the drum is lifted by internal spirals or lifters, tumbled, and cascaded as it travels down the length of the cylinder. Undersize particles fall through mesh apertures, while oversize material discharges continuously from the drum end. Built for continuous-duty separation in harsh waste processing plants.

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Key Features

Heavy-Duty Structural Frame: Fabricated from heavy structural steel tubing (Q355B high-strength carbon steel), stress-relieved prior to machining to resist torsional twist under heavy, uneven payload shock.

Four-Wheel Friction Drive System: Utilizes forged alloy steel trunnion wheels with polyurethane or hardened steel rims, driven by shaft-mounted planetary gearboxes and heavy-duty industrial motors.

Modular Screen Mesh Panels: Available in woven high-carbon spring steel, perforated wear-resistant steel plates, or modular polyurethane panels bolted to internal steel ribs for rapid replacement.

Enclosed Dust & Odor Containment: Fully sealed sheet metal housing with rubber skirting at feed and discharge points, equipped with standard dust extraction port flanges (200 mm dia.).

Adjustable Drum Inclination: Mechanical jacking bolts or shims allow field adjustment of drum tilt angle between 3 degrees and 7 degrees to regulate material retention time.

Applications

Municipal Solid Waste (MSW) Sorting

Separating oversized organic debris, plastics, and stones from matured compost after windrow or in-vessel composting.

Construction & Demolition (C&D) Waste

Scalping concrete rubble, brick fragments, and wood from soil, dirt, and fine aggregates.

High Strength

Pre-trommelling raw household waste to strip out wet organic fines prior to optical sorting or magnetic separation lines.

Wood Waste & Biomass

Classifying shredded wood chips, bark, and green waste by particle size for boiler fuel or mulch production.

Trommel Configuration

Parameter	Specification Range	Industrial Standard
Drum Diameter	1200 mm to 3000 mm	1800 mm or 2200 mm typical for MSW/Compost
Drum Length	3000 mm to 9000 mm	6000 mm standard screening zone
Throughput Capacity	30 cubic meters per hour to 250 cubic meters per hour	Dependent on moisture content and bulk density
Drive Power	11 kW to 55 kW	Heavy-duty industrial IP55 / IE3 motor
Rotation Speed	8 RPM to 22 RPM	Variable frequency drive (VFD) controlled

Screening & Drive Options

Drive Configuration

Chain-and-sprocket drive, center-shaft direct drive, or four-wheel external trunnion friction drive. Trunnion drive selected for heavy MSW applications to eliminate shaft fatigue failures.

Mesh Types

Punched plate for abrasive aggregate and heavy C&D applications; woven wire mesh for high open-area fine screening; polyurethane tensioned panels for high-impact wet composting.

Cleaning Mechanism

Optional brush or counter-weighted knocker bar assemblies mounted above the drum exterior to prevent blinding and pegging when processing high-moisture organic waste.

Recycling Construction Waste Screen manufacturers

Manufacturing & Quality Control

Plate Cutting & Rolling

CNC plasma/laser cutting for accurate hole perforation patterns; 3-roll plate bending machines ensure true cylindrical concentricity (radial runout tolerance under 2 mm).

Welding Standards

All structural and pressure-bearing welds performed by certified structural welders using flux-cored arc welding (FCAW), followed by ultrasonic (UT) or magnetic particle (MT) testing on critical stress joints.

Surface Preparation & Coating

Blast cleaned to Sa 2.5 standard, primed with zinc-rich epoxy barrier coat (80 micrometers), and finished with a two-component polyurethane topcoat (120 micrometers dry film thickness).

Factory Acceptance Testing (FAT)

4-hour no-load mechanical run test verifying bearing temperature rise (under 40 degrees Celsius above ambient), noise level emission (under 85 dB(A) at 1 meter), and drive current stability.

Final Solution

Integration of internal multi-stage screening zones (e.g., first half 20 mm aperture, second half 50 mm aperture) within a single continuous barrel.

Explosion-proof electrical control panels for plants processing combustible dust or landfill gas environments.

Integrated feed hopper and variable-speed belt feeder matched to wheel loader bucket widths.

FAQ

Q: How do you prevent wet compost or clay-heavy soils from blinding the screen mesh?

A: Polyurethane modular panels with flex-action properties combine with an external counter-weighted steel knocker bar or nylon brush assembly to continuously dislodge material wedged in apertures during rotation.

Q: What is the typical service life of the drum shell and screen panels?

A: Using heavy-duty abrasion-resistant wear plates (10 mm thickness) for abrasive C&D applications yields 15,000 to 20,000 operating hours before panel replacement. Standard carbon steel woven mesh in municipal compost plants averages 4,000 to 8,000 hours depending on glass and stone content.

Q: Can the rotation speed be adjusted on-site for different seasonal waste compositions?

A: All trommels feature an inverter-duty motor paired with a heavy-duty Variable Frequency Drive (VFD) pre-wired in the control panel, allowing operators to adjust drum speed between 8 and 22 RPM to balance screening efficiency against throughput.

Q: What maintenance is required for the trunnion wheel support system?

A: Trunnion bearings require scheduled grease purging every 250 operating hours using high-temperature lithium-complex grease. Drive tires and wheel running faces should be inspected semi-annually for uneven wear patterns or misalignment.

Q: How is the trommel anchored to prevent vibration-induced displacement?

A: The machine mounts on a rigid heavy-plate subframe designed for direct bolting to reinforced concrete foundations via chemical anchor bolts (M24 minimum), eliminating dynamic load transfer to surrounding structures.

Q: What information is required to generate an accurate technical proposal and price quote?

A: Submit target material bulk density (kg per cubic meter), moisture content percentage, required hourly throughput (cubic meters per hour or tons per hour), desired cut-point separation sizes, and integration requirements for downstream conveying equipment within the main control logic.

Zhengzhou Sinolion Machinery Co., Ltd. is well-known as one of the leading municipal solid waste sorting plant manufacturers and suppliers in China, featured by quality products and competitive price. If you're going to buy municipal solid waste sorting plant for sale, welcome to get more information from our factory.

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