Trommel screen for sale

Trommel screen has wide range of sizes and capacities,Mining Machinery Rrotating Vibrating Drum Sieve is a mechanical screening machine used to separate materials. Trommel screen consists of a perforated cylindrical drum that is normally elevated at an angle at the feed end,motor,reduction unit,screen frame and sealing cover. When materials flow towards along the inclined rotating drum,materials jump and roll,he undersized material smaller than the screen apertures passes through the screen, while the oversized material exits at the other end of the drum.

What Is a Trommel Screen?

A Trommel Screen is a mechanical screening machine used to separate materials based on size, consisting of a perforated cylindrical drum that is normally elevated at an angle at the feed end.

The name comes from the German word for “drum.” It is also widely known as a Drum Screen or Rotary Screen Separator. The concept is ancient, but modern engineering has made it efficient. It consists of a motor, a reducer, a drum frame, and a sealing cover.

In a typical plant setup, the trommel is used for distinct purposes:

• Classification: Separating solids into different size fractions.
• Washing: The tumbling action, combined with water, scrubs clay off rocks.
• Scalping: Removing large rocks or trash before the material enters sensitive equipment.

For ZONEDING customers, this is the “go-to” machine when the material is too dirty or sticky for a standard vibrating screen.

Application of trommel screen machine

1. Abrasive material and ceramic industry: building sand, mica, alumina, silica sand, abrasive, refractory materialetc.
2. Metallurgy and mining industry: quartz sand, sand, ore, titanium oxide, zinc oxide, etc.
3. Mechanical industry: casting sand, charcoal, grafito, powder metallurgy, electromagnetic material and metal powder, etc.

Which Materials is Suitable for Trommel Screens?

Not all materials react well to tumbling. The Drum Sieve excels with specific types of feed.

• 1. Sticky, Wet Materials:This is where the trommel beats the vibrating screen. Clay, wet soil, and river sludge tend to stick to a flat vibrating surface. In a trommel, the tumbling action forces the material to roll and break apart.
• 2. Materials with “Near-Size” Particles:If you have many particles that are almost the same size as the screen holes, they usually get stuck (pegging). ZONEDING trommels use active cleaning brushes to push these particles back out.
• 3. Abrasive Materials:While abrasive rock wears down any screen, the rotary motion produces less direct impact wear compared to the violent bouncing of a vibrating screen. However, for extremely sharp, hard rock (like granite), heavy-duty steel plates must be used instead of wire mesh.
• 4. Debris-Laden Material:Material containing plastic, wood, or fabric (like in landfills) is handled easily. A vibrating screen would get tangled instantly. A shaftless trommel allows this trash to pass right through.

What are Benefits of Using Trommel Screens?

Why do project managers choose a rotary screen over other types? It comes down to reliability and operational cost.

• Anti-Clogging Performance:The integrated cleaning brush serves as the primary advantage. It physically sweeps the screen with every rotation. You don’t have to stop the machine to clean the mesh manually.
• Smooth Operation:Unlike a vibrating screen that shakes the entire foundation, a trommel rotates smoothly. It creates less noise and requires less structural reinforcement for the mounting platform.
• High Screening Efficiency for “Fines”:For materials like topsoil or sand, the separation efficiency is high because the material spends a long time inside the drum, getting many chances to find a hole.
• Simple Structure:There are no complex exciter mechanisms or sensitive springs. It is just a motor, a chain (or friction wheel), and a drum. Maintenance is straightforward.

How to Choose the Right Trommel Screens?

Selecting the correct Rotary Screen impacts your throughput. You must calculate carefully.

• 1. Determine the Diameter and Length:
  • Diameter: Determines how much material you can process per hour. A 1000mm diameter drum handles far less than a 2000mm drum.
  • Length: Determines the screening accuracy. A longer drum keeps the material screening for longer, resulting in a cleaner product.
• 2. Select the Screen Media:
  • Woven Wire Mesh: High open area, good for soil and sand.
  • Punch Plate (Perforated Steel): Extremely durable. Best for big rocks and heavy mining applications.
  • Polyurethane: Best for wear resistance and handling fine, sharp sands.
• 3. Shaft vs. Shaftless:
  • Shaft Type: Has a central axle. Stronger, cheaper, but debris like vines or rags can wrap around the shaft.
  • Shaftless Type: No center axle. The drum rides on wheels. Best for sticky material or waste containing plastic/fabric, as there is nothing for trash to tangle on.

structure of Tumbler Screen

The drum body of the drum screen is generally divided into several sections, depending on the specific situation, the screen holes are arranged from small to large, and the screen hole diameter on each section is the same.

How Does the Trommel Screens Work?

The operation relies on gravity and rotation, not vibration.

• 1. The Feed:Material is fed into the drum through a hopper. The drum is tilted at an angle (usually 5 to 15 degrees).
• 2. The Tumble:As the drum rotates, the material behaves like clothes in a dryer. The ribs inside the drum lift the material up. When it reaches the top, gravity pulls it back down. This constant lifting and dropping (tumbling) breaks up clumps of soil and clay.
• 3. The Screening:The drum walls are made of mesh or perforated steel plate.
  • Undersize: Particles smaller than the holes fall through the mesh. They land on a conveyor belt below or into a collection hopper.
  • Oversize: Particles larger than the holes cannot pass through. They tumble all the way down the slope of the drum and exit at the lower end.
• 4. The Cleaning:To stop wet mud from plugging the holes, ZONEDING installs a mechanical cleaning brush or a water spray bar on top of the drum. This constantly clears the mesh openings.

Working principle of Tumbler Screen

Trommel screen is consisting of five parts: drum, frame, hopper, reducer and motor.
After the material goes into the drum, it is screened along with the rotation of drum. At same time, the larger size materials flow forward along the direction of slope and be separated by the screen with different numbers of meshes. The different materials fall into different hoppers and then are sent to different finished product stacks by manpower or belt conveyor.

Advantages of Tumbler Screen

• Wide material adaptability:It is used for screening of various materials. No matter it is inferior coal, slime, soot or other materials, it can be screened smoothly.
• High screening efficiency:The equipment can be equipped with comb cleaning mechanism. In the screening process, the materials entering the screening cylinder can be screened according to impurities and dirt to improve the screening efficiency of the equipment.
• The screening composition is large and easy to enlarge: In the same size, the circular area is larger than other shapes, so the effective screening area is large, so that the material can fully contact the screening, so that the screening component per unit time is large.
• Good working environment: The whole screening cylinder can be sealed with a sealed isolation cover to completely eliminate dust and block splashing during screening and avoid pollution to the working environment.

Why Choose ZONEDING’s Trommel Screens?

At ZONEDING, we don’t buy generic designs; we engineer solutions.

• Customization: We build both stationary and mobile trommel units on wheels. We can add a diesel generator, water pump, and feed hopper to create a complete portable plant.
• Durability: Our drum frames utilize thickened manganese steel. We don’t cut corners on steel thickness.
• Engineered Brushes: We use high-quality nylon brushes that effectively clean the screen without wearing out the mesh prematurely.
• Drive Options: We offer chain drive (for no-slip torque) or tire drive (for smooth, quiet operation).

Technical Parameter of Tumbler Screen

Model	Screen Size(mm)	Feeding Size(mm)	Drum Dia  (mm)	Drum length (mm)	Process Capacity(t/h)	Motor Power(kw)
GT0513	≤20	≤80	500	1300	1-5	3
GT0813	≤20	≤80	800	1300	5-10	4
GT1015	≤20	≤80	1000	1500	10-15	5
GT1020	≤25	≤80	1000	2000	15-20	5.5
GT1225	≤25	≤100	1200	2500	20-50	7.5
GT1530	≤25	≤100	1500	3000	40-70	11
GT1545	≤25	≤100	1500	4500	70-100	15
GT1848	≤50	≤100	1800	4800	100-150	22
GT2055	≤50	≤100	2000	5500	150-200	30

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