Analysis of the effect and function of the trommel screen in screening waste

Preface:Trommel Screen is an important mechanical equipment in garbage recycling and treatment, mainly used for screening and classifying solid waste. Its working principle is to use a tilted rotating cylindrical sieve to divide the material entering the cylinder into different grades according to particle size. Smaller particles can fall through the sieve holes, while larger substances remain on the sieve surface and are transported to the end for discharge as the cylinder rotates. This screening process helps to improve the efficiency of subsequent processing techniques, such as resource recycling, composting, or incineration.

Trommel Screen

In practical applications, Trommel Screens can effectively remove impurities such as soil and small gravel from garbage, while also separating recyclable materials such as plastics and metals. Through this approach, not only can the pressure on landfills be reduced, but also the recycling of resources can be promoted, which is of great significance for achieving waste reduction and resource utilization. In addition, the design of the Trommel Screen also takes into account the ease of operation and maintenance, and can adapt to different types and properties of garbage disposal needs. In short, Trommel Screens play an irreplaceable role in the process of garbage recycling and disposal.

Trommel Screen

A. How to use a Trommel Screen for garbage recycling?

The process of using a Trommel Screen for garbage recycling mainly involves the steps of garbage disposal, screening, and classification collection. Here is a detailed operation guide:

1. Preparation work

Equipment inspection: Before using the Trommel Screen, it is necessary to conduct a comprehensive inspection of the equipment to ensure that it is in good working condition. This includes checking the integrity of the screen mesh, whether the drum rotates smoothly, and whether the transmission components are tightened.

Screen selection: Choose the appropriate screen aperture based on the type of garbage and recycling needs. The size of the sieve aperture will directly affect the screening effect, so it needs to be adjusted according to the actual situation.

2. Garbage disposal

Garbage pretreatment: Before putting garbage into the Trommel Screen, it is necessary to perform certain pretreatment on the garbage, such as removing large debris, broken bags, etc. This helps to improve screening efficiency and accuracy.

Uniform placement: Place the garbage evenly into the feeding port of the Trommel Screen to avoid overloading the equipment or uneven screening caused by excessive placement at once.

3. Screening process

Start the device: After confirming that the device is correct, start the Trommel Screen to start rotating.

Garbage Rolling and Screening: Under the rotation and tilting of the drum, garbage is continuously rolled and stirred. Smaller materials (such as slag, dust, etc.) fall through the sieve and are collected for subsequent processing or utilization; Larger materials (such as bricks, wood, plastic, metal, etc.) continue to move forward inside the drum and are ultimately discharged from the drum's discharge port.

Adjusting screening effect: During the screening process, the screening effect can be changed by adjusting the speed of the drum and the inclination angle of the screen mesh. The faster the rotation speed, the higher the screening efficiency; The higher the tilt angle, the more favorable it is for the discharge of large materials.

4. Classification collection and processing

Fine material collection: Fine materials (such as slag, dust, etc.) leaked from the sieve can be collected for subsequent processing or utilization, such as for filling.

Classification of large materials: Large materials discharged from the drum outlet need to be further classified and processed according to their properties. For example, bricks can be used in the production of recycled building materials, wood can be recycled, and plastics and metals can be specially processed for recycling.

Resource recycling and utilization: After being screened by a Trommel Screen, the valuable part of the garbage is effectively separated and collected, laying the foundation for subsequent resource utilization. These recyclable materials can be further processed into new products or materials, achieving the resource utilization of waste.

5. Precautions

Safe operation: During the operation process, it is necessary to strictly follow the safety operation procedures to ensure the safety of personnel and equipment.

Equipment maintenance: Regularly maintain and upkeep the Trommel Screen, including cleaning the screen mesh, inspecting transmission components, etc., to ensure the long-term stable operation of the equipment.

Environmental requirements: When dealing with garbage, it is necessary to comply with relevant environmental regulations and standards to ensure that no pollution is caused to the environment.

Using a Trommel Screen for garbage recycling is an efficient and environmentally friendly process. Through reasonable operation and maintenance, effective classification and resource utilization of garbage can be achieved, contributing to environmental protection and sustainable development.

Trommel Screen

B. What is the screening efficiency of the Trommel Screen?

The screening efficiency of the Trommel Screen is quite high. The following is a detailed analysis of its screening efficiency:

1. Definition and influencing factors of screening efficiency

Screening efficiency refers to the ability of screening equipment to separate materials by particle size per unit time, usually expressed as the mass percentage of the undersized material. The screening efficiency of a Trommel Screen is influenced by various factors, including material properties such as particle size, humidity, viscosity, etc., the rotation speed of the screen cylinder, the size and distribution of the sieve holes, and the feeding speed and distribution of the material.

2. Specific performance of Trommel Screen screening efficiency

Efficient screening: The Trommel Screen uses an internal rotating screen cylinder to classify and screen materials. The material rolls and jumps inside the sieve tube, with materials smaller than the sieve hole falling through the sieve hole, and materials larger than the sieve hole continuing to move along the sieve tube, ultimately achieving material classification. This working method enables the Trommel Screen to perform well in screening wet and sticky materials, as well as materials that are prone to clogging.

High screening rate: Under optimized conditions, the screening rate of the Trommel Screen can reach 85% to 95%, or even higher. This is mainly attributed to its unique design and working principle, as well as reasonable operating parameter settings.

Strong processing capability: The Trommel Screen can process a large amount of materials to meet the requirements of large-scale production. It has high screening efficiency and can efficiently complete the screening work of a large amount of materials.

Trommel Screen

3. Methods to improve the screening efficiency of Trommel Screen

a. Optimizing operating parameters: By adjusting the speed of the drum, the size and shape of the sieve holes, as well as the feeding speed and distribution of materials, the screening efficiency can be significantly improved.

b. Preprocessing materials: Crushing, compressing, and other preprocessing of materials to make them easier to screen.

c. Uniform feeding: Ensure that the material is evenly distributed on the screen surface, avoiding local overload and reducing screening efficiency.

d. Regular inspection and maintenance: Regularly check the wear of the screen mesh and replace damaged screens in a timely manner; Keep the equipment clean to prevent the accumulation of dust and debris from affecting the screening effect; Optimize lubrication to ensure good lubrication of moving parts, reduce wear, and extend service life.

Trommel Screen

PS:Trommel Screens have high screening efficiency and stable performance, playing an important role in various industrial fields. Through reasonable operation and maintenance, as well as continuous technological innovation and optimization, its screening efficiency and processing capacity can be further improved, contributing to the effective recycling and utilization of resources and environmental protection.

Author : Serena Chang

Serena Chang is the writer of blog and news column. With more than 10 years of working experience in the machinery industry, she has a comprehensive understanding of environmental protection machinery and is willing to share useful knowledge of environmental protection machinery.