Bearings For Cement Industry

The introduction of vibrating screen

The vibrating screen works by utilizing the reciprocating spiral vibration generated by the vibrator. The upper rotating weight and the lower rotating weight through the guard drive it. The vibration trajectory of the screen surface is a complex spatial curve, which can achieve compound rotation vibration. The horizontal plane projection of the vibration trajectory is a circle, and the vertical plane projection is an ellipse. The amplitude of the screen is altered by the excitation force created by the upper and lower rotating weights. Additionally, changing the spatial phase angle of the upper and lower weights can alter the curve shape of the screen's movement trajectory, leading to a change in the path of materials on the screen surface.

Vibrating screens play a very important role in the sand and gravel production line. They can be classified according to different needs, including static screens, linear screens, circular vibrating screens, elliptical screens, rotary vibrating screens, multi-element high-efficiency screens, high-width screens, and relaxation screens. Screens, drum screens, roller screens, etc. These different types of vibrating screens have different functions and applications in the sand and gravel production line due to their different working principles and application scenarios.

In order to improve screening efficiency and protect the motor from impact, the vibrating screen adopts various technical measures, such as using rubber isolation springs to extend its life and reduce noise and using boiler steel plates for the side panels of the screen box to enhance impact resistance. In addition, the vibrating screen also uses materials such as polyurethane guards, battens, and support bars to prevent wear and tear.

In short, the vibrating screen is one of the indispensable equipment in the sand and gravel production line and has important functions and significance.

• The harsh working environment of the vibrating screen

• The working environment of vibrating screens may be harsh, especially for some specific vibrating screens, such as vibrating screens on sand and gravel production lines. The following are some problems that vibrating screens may encounter in harsh working environments:

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• A large amount of dust and impurities: In the production line for sand and gravel, the vibrating screen must handle a large volume of material that may contain dust and impurities. These dust and impurities may have adverse effects on the vibrating screen's work, such as clogging the screen and wearing out machine parts.

• High vibration and impact: The vibrating screen will produce high vibration and impact during operation, which may have adverse effects on the stability, noise, life, etc., of the machine. Especially in environments such as mining or crushing, vibrating screens need to withstand higher vibrations and impacts.

• High temperature and high humidity: In some working environments, vibrating screens need to face high temperatures and high humidity. It can cause problems such as corrosion, aging, and wear on the machine's electrical components and mechanical parts.

• Different types and specifications of sand and gravel materials: Different sand and gravel materials have different types and specifications, and they require different vibrating screens to process them. It may require frequent screen changes or adjustments to machine parameters to accommodate different types and sizes of sand and gravel.

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• In order to cope with these harsh working environments, some special vibrating screens are designed to adapt to different working environments. For example, screens made of high-strength wear-resistant materials, high-precision balancing devices, automatically controlled lubrication systems, etc., can better adapt to harsh working environments such as high vibration, high temperature, and high humidity and improve the performance of the vibrating screen. Work efficiency, stability, and longevity. In addition, regular maintenance and upkeep of the vibrating screen is required to ensure its normal operation and extend its service life.

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• Vibrating screens are important separation and screening equipment in many industrial fields and are widely used in mining, metallurgy, coal, chemical industry, construction, food, and other industries. In the vibrating screen, the bearing is one of the crucial components. It not only supports the movement of the screen body but also transfers vibration energy to the screen surface so that the materials can be separated. This article presents a detailed overview of vibrating screen bearings, covering their basic concepts, types, applications, and maintenance.

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• Basic concepts of vibrating screen bearings

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• The vibrating screen bearing is a special rolling bearing with the ability to withstand radial and axial loads. It is a high-precision, high-speed bearing, usually made of hardened steel or stainless steel, with high hardness and high wear resistance. Vibrating screen bearings can be divided into two categories: cylindrical bearings and tapered bearings, according to their shapes. Cylindrical bearings can be divided into single-row and double-row types.

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• Types and applications of vibrating screen bearings

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• Single-row cylindrical bearings

• The single-row cylindrical bearing is a rolling bearing whose inner and outer rings have a single rolling surface. It has the characteristics of high precision, high rotation speed, low friction resistance, etc., and is usually used to support the rotating shaft of the vibrating screen.

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• Double-row cylindrical bearings

• The inner ring and outer ring of double-row cylindrical bearings have two rolling surfaces, respectively. This kind of bearing has a greater load-bearing capacity and is suitable for bearing higher radial and axial loads. In vibrating screens, double-row cylindrical bearings are usually used to support the rotating shaft of the screen body.

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• Tapered bearings

• The tapered bearing is a rolling bearing with inner and outer conical surfaces that can bear combined radial and axial loads. Tapered bearings have high load-bearing capacity and service life and are suitable for high speed, heavy load, and impact load conditions. In vibrating screens, tapered bearings are usually used to support the rotating shaft of the screen body.

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• Spherical roller bearing

• Spherical roller bearings are rolling bearings with a self-aligning function that can adapt to different shaft diameters and load conditions. Its inner ring and outer ring have two rolling surfaces, respectively, which have high load-bearing capacity and service life. In vibrating screens, spherical roller bearings are usually used to support the rotating shaft of the screen body and have a certain vibration-damping effect.

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• Maintenance of vibrating screen bearings

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• Periodic inspection

• Regularly check the working status of the vibrating screen bearings, including bearing lubrication, wear, operating sound, etc. If any abnormality is discovered, it should be dealt with promptly.

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• Lubrication and maintenance

• Lubrication is an important part of vibrating screen-bearing maintenance. During the operation of bearings, lubricants can reduce friction and wear. Generally speaking, lubricants should be replaced regularly, and an appropriate amount of lubricant should be used to avoid waste.

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• Replace bearings

• When the vibrating screen bearings reach the end of their service life, or serious failure occurs, the bearings should be replaced in time. When replacing bearings, you should choose the appropriate model and specification to ensure that the bearings fit well with the host and install and adjust them according to the instructions.

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• In short, the vibrating screen bearing is an important part of the vibrating screen. Its quality and performance directly affect the working effect and service life of the entire vibrating screen. Therefore, it is very important to choose the appropriate vibrating screen bearing. At the same time, in order to ensure the normal operation of the bearings and extend their service life, the bearings should be inspected and maintained regularly.