Technical parameters and daily maintenance of Trommel Screen

Preface: The Trommel Screen is an indispensable equipment in the field of solid waste treatment and resource recycling, and is mainly used for the preliminary classification and screening of materials. It uses a rotating cylindrical structure, gravity and centrifugal force to separate garbage or waste according to particle size. Its core function is to efficiently distinguish materials of different sizes, so that fine particles pass through the screen and become undersize, while larger objects remain on the screen surface as oversize, thereby providing purer and clearly classified raw materials for subsequent processing procedures.

Zhongcheng Mechanical Trommel Screen

The Trommel Screen is a very widely used machine in sorting technology. It controls the garbage sorting by the particle size, and has high sorting accuracy. The simplified Trommel Screen is generally divided into several sections, depending on the specific situation. The screen holes are arranged from small to large, and the screen holes on each section have the same aperture. The Trommel Screen is a very widely used machine in sorting technology. It controls the garbage sorting by the particle size, and has high sorting accuracy. The drum body of the Trommel Screen is generally divided into several sections, depending on the specific situation. The screen holes are arranged from small to large, and the screen holes on each section have the same aperture. The Trommel Screen is mainly composed of a motor, a reducer, a drum device, a frame, a sealing cover, and an inlet and outlet.

A. Technical parameters of Trommel Screen:

The Trommel Screen is mainly composed of a motor, a reducer, a drum device, a frame and other mechanisms. The drum device is arranged at an angle, and the motor is connected to the drum mechanism through the reducer to drive the drum mechanism to rotate around its axis. When the material enters the drum device, due to the inclination and rotation of the drum device, the qualified material (the product under the screen) is discharged through the screen of the outer circle of the drum, and the unqualified material (the product on the screen) is discharged through the end of the drum. The SH series rotary screen drum device is sealed by the body sealing cover, so as to ensure that the equipment is effectively prevented from escaping during operation and dust pollution is eliminated. When replacing the screen, you only need to open the body sealing cover to replace it, which is easy to operate. The technical parameters of the Trommel Screen may vary depending on the model, purpose and manufacturer. The following are some common Trommel Screen technical parameters and their descriptions:

Trommel Screen technical parameter table：

1.Model: The model of the Trommel Screen usually represents its structural characteristics, processing capacity or scope of application. The specific model name may be defined by the manufacturer.

2. Processing capacity: The processing capacity of the Trommel Screen is usually expressed in terms of the weight of materials processed per hour (tons/hour, t/h), which determines the amount of material that the Trommel Screen can screen in a specific time. The size of the processing capacity is related to factors such as the diameter, length, mesh size and speed of the Trommel Screen.

3. Power: The power of the Trommel Screen (kilowatts, kw) refers to the power of the motor required to drive the Trommel Screen. The power size is closely related to the processing capacity, screening efficiency and operating stability of the Trommel Screen.

4. Screen drum diameter: The screen drum diameter (mm) refers to the outer diameter of the screen drum in the Trommel Screen. The larger the screen drum diameter, the stronger the processing capacity of the Trommel Screen, but it also increases the floor space and manufacturing cost of the equipment.

5. Screen drum length: The screen drum length (mm) refers to the axial length of the screen drum in the Trommel Screen. The longer the screen drum length, the longer the material is screened in the screen drum, and the higher the screening efficiency may be, but it will also increase the weight and complexity of the equipment.

6. Screen undersize: The screen undersize (mm) refers to the maximum particle size of the qualified material obtained after screening by the Trommel Screen. The size of the screen undersize depends on the size and shape of the screen holes on the screen drum, as well as the speed and inclination angle of the Trommel Screen.

7. Size: The size of the Trommel Screen usually includes the overall size of the equipment (length, width, height) and the diameter and length of the screen drum. These size parameters are of great significance to the installation, commissioning and space requirements during the operation of the equipment.

8. Weight: The weight of the Trommel Screen (kg) refers to the total weight of the equipment, including the weight of the screen drum, frame, motor, reducer and other components. The weight is related to factors such as the structure, material and processing capacity of the equipment.

9. Others: The technical parameters of the Trommel Screen may also include some other parameters, such as screening efficiency, noise level, wear resistance, corrosion resistance, etc. The specific values of these parameters may vary depending on the Trommel Screen of different models and uses.

In practical applications, when selecting a Trommel Screen, it is necessary to comprehensively consider the above technical parameters based on factors such as specific material characteristics, processing requirements, and site conditions to ensure that the selected equipment can meet production requirements and has good economy and practicality.

Zhongcheng Mechanical Trommel Screen

B. Characteristics of Trommel Screen:

1. Wide adaptability of materials: It is widely used in screening of various materials, whether it is inferior coal, coal slime, coal smoke or other types of materials, they can be screened smoothly;

2. Simple and diverse feeding methods: The feeding port can be designed according to the actual site, whether it is a belt, funnel or other feeding methods, no special measures are taken, and materials can be fed smoothly;

3. High screening efficiency: The equipment can be equipped with a comb-type cleaning mechanism. During the screening process, no matter how dirty or mixed the materials entering the screening cylinder are, they can be screened, thereby improving the screening efficiency of the equipment;

4. Large screening amount and easy to scale up: Under the same size, the area of the circle is larger than that of other shapes, so its effective screening area is large, so that the material can fully contact the screen, so the screening amount per unit time is large. Because of its simple structure, convenient layout, novel and mature technology, it is easy to scale up;

5. Low energy consumption: The motor power is small, which is one-half to one-third of other screen types. It processes the same amount of materials and the running time is only one-half of other screen types, so the energy consumption is low;

6. Good working environment: The entire screening cylinder can be sealed with a sealed isolation cover, which completely eliminates the dust flying and block splashing during the screening cycle, avoiding pollution to the working environment;

7. Low equipment noise: During operation, due to the low rotation speed and the sealed isolation cover is isolated from the outside, the noise cannot be transmitted to the outside, thereby reducing the equipment noise;

8. Long service life and small maintenance: The rotary screen is composed of several circular ring nets, and its total screening area is much larger than the screening area of other screen types. In addition, the screening efficiency is high and the equipment running time is short, so the service life is long, there are fewer wearing parts and less maintenance;

9. Convenient maintenance: The sealed isolation cover of the equipment can be disassembled, which does not affect the normal operation of the machine and makes maintenance very convenient.

Zhongcheng Mechanical Trommel Screen

C. Working principle of Trommel Screen structure:

The Trommel Screen mainly consists of a motor, a reducer, a drum device, a frame, a sealing cover, and an inlet and outlet. The drum device is installed on the frame at an angle. The motor is connected to the drum device through a coupling via a reducer to drive the drum device to rotate around its axis. When the material enters the drum device, the material on the screen surface is flipped and rolled due to the tilting and rotation of the drum device, so that the qualified material (screen-under product) is discharged through the discharge port at the bottom of the rear end of the drum, and the unqualified material (screen-over product) is discharged through the discharge port at the tail of the drum. Due to the flipping and rolling of the material in the drum, the material stuck in the screen hole can be ejected to prevent the screen hole from being blocked.

The design of the Trommel Screen is highly flexible, and parameters such as the screen hole size, drum speed and tilt angle can be adjusted according to specific application requirements to adapt to various types of material sorting tasks. This equipment has the characteristics of simple structure, strong durability, large processing capacity and easy operation and maintenance. It is suitable for various occasions such as urban domestic waste, construction waste, and industrial waste slag.

D. Precautions for installation and use of Trommel Screen:

1. Precautions for equipment installation and adjustment:

a. The horizontal deviation of the machine is required to be no more than 1mm/m;

b. All equipment mechanisms are not allowed to set up other objects to avoid affecting the strength and rigidity of the equipment;

c. After installation, the installation tools should be removed, and no foreign matter should be left inside and outside the screen drum;

d. All fasteners of the equipment should be tightened firmly and reliably without looseness. After proper installation and adjustment, the no-load test can be carried out after further confirmation.

2. No-load test

a. No abnormal noise;

b. After continuous operation for 2 hours, the bearing temperature rise does not exceed 70℃;

c. After confirming that there is no abnormality in the no-load test, the load test can be carried out.

3. Load test

a. The equipment should be started first, and then loaded evenly until it is running normally until it is fully loaded;

b. The equipment should not have excessive or significant impact sounds;

c. The equipment should run continuously for 8 hours, and the bearing temperature rise should not exceed 70℃;

d. Stop feeding before stopping, and stop only after the material in the screen drum is completely discharged;

e. It can be put into production when the above conditions are met;

f. It is strictly forbidden to make adjustments when the equipment is running.

Zhongcheng Mechanical Trommel Screen

E. Trommel Screen failure analysis

a. Pay attention to it frequently and do a good job of lubricating all parts of the equipment in time. Ensure the normal operation of the machine and extend the service life of the equipment;

b. The grease used in this machine is calcium-based grease;

c. All parts that need lubrication are filled with grease before the machine leaves the factory. The user determines the lubrication cycle according to the specific working conditions. There are two lubrication parts on the equipment body, on the bearing seat at the head and tail;

d. The equipment should be lubricated after stopping, and the motor and reducer should be in accordance with their instructions;

e. It is strictly forbidden to make adjustments when the equipment is running.

Zhongcheng Mechanical Trommel Screen

F. Maintenance and management of Trommel Screen

a. The equipment should be managed by a dedicated person;

b. The maintenance and repair of the equipment must be carried out after parking. It is strictly forbidden to carry out maintenance and repair when the equipment is running;

c. Equipment management, maintenance personnel should frequently inspect the operation of the equipment, for example: whether the fasteners are reliable and whether the rotating parts are flexible. Equipment dirt must be cleaned after the shift

When facing complex garbage containing a large amount of sticky substances or easily entangled items, although there are challenges, by optimizing the design (such as adding self-cleaning devices) and operating conditions (such as controlling the feed speed), the sorting efficiency can be effectively improved and the failure rate can be reduced.

PS: The application of Trommel Screen is not limited to the waste treatment industry. It also plays an important role in agriculture, mining, food processing and other industries. With its efficient and stable performance, the Trommel Screen has promoted the effective utilization of resources and environmental protection in many industries, which is of great significance to promoting the development of the circular economy.

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.