The principle and use of trommel screen

The principle and use of trommel screen

Trommel screen is a common screening equipment, which is widely used in various industries, such as building materials, electric power, chemical industry, metallurgy, etc. Its main function is to screen the materials and separate the materials with different particle sizes to meet the production and process requirements. This article will introduce the principle and purpose of trommel screen in detail.

First, the principle of trommel screen.

The principle of trommel screen is mainly to use the rotating movement of materials in the drum, so that materials with different particle sizes fall into different collection ports according to their different sizes, shapes and weights, so as to achieve the purpose of screening. The main structure of the trommel screen includes the inlet, drum, screen, outlet and transmission device.

1.Feed port: The function of the feed port is to introduce the material to be screened into the trommel screen. According to the characteristics of the material and the process requirements, the size and position of the inlet can be adjusted to achieve better screening results.

2.Drum: The drum is the core part of the trommel screen, which is composed of multiple small sections, each of which is equipped with a screen. The drum is driven and rotated by the transmission device, so that the material is subjected to centrifugal force and friction force in the drum, and moves to the surface of the screen and is screened.

3.Screen: The screen is a key part of the trommel screen, which is composed of multiple screen pieces with different pore sizes and is used to separate materials with different particle sizes. The pore size of the screen can be selected according to the characteristics of the material and the process requirements to achieve the best screening effect.

4.Discharge port: The function of the discharge port is to collect the screened materials separately. Depending on the particle size and weight of the material, the size and position of the discharge port can be adjusted to achieve better collection results.

5.Transmission device: The function of the transmission device is to drive the drum to rotate, so that the material is screened in the drum. The transmission device is generally composed of motors, reducers and sprockets, which can be selected and adjusted according to the actual situation.

Second, the use of trommel screen.

As a common screening equipment, trommel screens have a wide range of applications. Here are some common use cases:

1.Building materials industry: In the building materials industry, trommel screens are mainly used for the screening of sand, gravel, cement and other materials. By adjusting the pore size of the screen, the sand and gravel with different particle sizes can be separated to meet the requirements of the production process. At the same time, trommel screens can also be used to filter impurities in building materials such as cement and gypsum to improve product quality.

2.Power industry: In the power industry, trommel screens are mainly used for fly ash screening in coal-fired power plants. By adjusting the pore size of the screen, fly ash with different particle sizes can be collected separately for subsequent treatment and utilization. At the same time, the trommel screen can also be used to filter impurities in fly ash and improve its purity.

3.Chemical industry: In the chemical industry, trommel screens are mainly used for the screening of various chemical raw materials and products. For example, chemical raw materials such as salts and acids with different particle sizes can be separated to meet the requirements of the production process. At the same time, trommel screens can also be used to filter impurities in chemical products and improve product quality.

4.Metallurgical industry: In the metallurgical industry, trommel screens are mainly used for the screening of ores, ore powders and other materials. By adjusting the pore size of the screen, ore or ore powder with different particle sizes can be separated for subsequent smelting or processing. At the same time, trommel screens can also be used to filter impurities in ores or fines to improve their purity.

In short, as a common screening equipment, trommel screens have a wide range of application fields. By understanding its principles and uses, it can better play its role and improve production efficiency and product quality.