Drum screen, which is known as trommel screen or rotary vibrating screen, its major functions is classification, screening and grading materials in various industries. It is composed of a motor, reduction unit, a cylindrical drum, screen frame as well as a sealing cover.
According to clients’ demand, drum screen is available in designing to open type and closed type,meanwhile,from these two types drum screen could be made either with or without shaft.
● The drum unit is mounted on the rack frame with inclination. The gearmotor is connected with drum unit by coupling device, the drive unit rotates around the axis.
● When the material enters into the drum cylinder unit, due to tilting and rotating of drum unit, causing the material on the screen surface turnover and rolling, the qualified materials (undersized products) will be discharged from the outlet at the bottom of the drum, the unqualified materials (oversize products) will be discharged through the outlet.
● By reasons of material turnover and rolling inside the drum, material stuck in the sieve can be rebounced to prevent clogging.
Drum screen with shaft is generally used for screening granular material with large density, such as: sand, coal, limestone, fertilizer, compost and mineral, etc.
Drum screen without shaft is generally used for screening material with small density, such as: waste, wooden chips, activated carbon, fertilizer, construction material, chemical material, etc.
Model | Length Range | Segment No. | Aperture Size | Power (Kw) | Inclined Angle |
GTSφ600 | 2-4m | 1-2 | 5-35mm | 2.2-3 | 0-7° |
GTSφ800 | 2-5m | 1-3 | 5-40mm | 3-5.5 | 0-7° |
GTSφ1000 | 2-6m | 1-4 | 5-50mm | 4-7.5 | 0-7° |
GTSφ1200 | 3-8m | 1-4 | 5-60mm | 5.5-11 | 0-7° |
GTSφ1500 | 3-10m | 1-5 | 5-60mm | 7.5-1 5 | 0-7° |
GTSφ2000 | 4-12m | 1-5 | 5-75mm | 7.5-l 8.5 | 0-7° |
GTSφ2500 | 5-12m | 1-6 | 5-90mm | 11-l 8.5 | 0-7° |
Essential Maintenance Practices for Drum Screens
Drum screens are critical equipment in material separation processes, so proper maintenance is key to ensuring operational efficiency and extending service life. Below are core maintenance guidelines:
1. Daily Inspection
Debris Removal: Check and clear accumulated materials on the screen surface and in the drum’s inner gaps daily. Blockages can reduce separation accuracy and overload the motor.
Component Check: Inspect the drive belt for tightness and wear, and ensure the motor and reducer run without abnormal noise or overheating.
2. Regular Preventive Maintenance
Lubrication: Every 200-300 operating hours, lubricate bearings, chains, and gearboxes with recommended lubricants. Avoid over-lubrication, which may attract dust.
Screen Surface Maintenance: Monthly check the screen mesh for damage (e.g., tears, holes). Replace worn meshes promptly to maintain separation quality.
Structural Inspection: Quarterly inspect the drum frame, support rollers, and fastening bolts for looseness or corrosion. Tighten or replace parts as needed.
3. Troubleshooting Tips
If the drum rotates unevenly, check for roller misalignment or bearing damage.
For reduced screening efficiency, verify mesh cleanliness and adjust the drum’s tilt angle if necessary.
By following these practices, drum screens can maintain stable performance, minimize downtime, and lower long-term maintenance costs.
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