Uncover The Secrets Of The Mineral Sizer Tooth Roller
In the field of industrial production, the crushing of materials is a very critical process, whose purpose is to convert large pieces of raw materials into small pieces of materials that meet the size requirements to meet the needs of subsequent processing or use. mineral sizer is an efficient crushing machine that plays an integral role in several industries. It is widely used in the mining industry, in the processing of coal, iron ore, non-ferrous metal ores and other types of ores, can be mined large ores broken into smaller particle size, laying the foundation for the subsequent processing, smelting and other processes, greatly improving the mining efficiency; In the metallurgical industry, raw materials such as iron ore and coke can be broken to make their granularity suitable for blast furnace smelting and ensure the smooth progress of steel production; In the building materials industry, it is often used to treat marble, granite, limestone and other stones to provide high-quality stone materials with appropriate particle size for construction, decoration and other fields; The chemical industry is also inseparable from mineral sizer, which can break various chemical raw materials into the particle size to meet the chemical reaction and processing requirements, ensuring the stability of chemical production.
mineral sizer is mainly composed of frame, transmission device, crushing roller, adjusting device, spring device, motor and other parts. Among them, the crushing roller is the core component, which is composed of two rollers rotating opposite each other, and the roller teeth ring is installed on the two rollers. Although the roller tooth ring is only a component, it plays a pivotal role in the operation of mineral sizer, its performance will directly affect the working efficiency of the crusher, crushing quality and the service life of the equipment. Let’s take a closer look at the role of roller teeth rings.
The roller teeth ring is usually annular, and its inner diameter matches the outer diameter of the tooth roller, which can be fitted tightly on the tooth roller. From the shape point of view, its outer surface is distributed with regular arrangement of teeth, and the shape and size of these teeth vary according to different crushing needs. Generally speaking, the shape of the teeth is triangular, trapezoidal, rectangular, etc., and different shapes of teeth play different roles in the crushing process. For example, the sharp part of the triangular tooth can be more easily cut into the material, suitable for crushing materials with higher hardness; Trapezoidal teeth ensure the crushing effect at the same time, with better wear resistance and bearing capacity, often used to deal with medium hardness materials; The rectangular teeth are relatively regular and suitable for occasions where the crushing particle size is more uniform.
The dimensions of the teeth, including parameters such as tooth height, width and spacing, are also crucial. The tooth height determines the crushing depth of the tooth on the material. Higher teeth can break the material more deeply, but at the same time, it may also increase the risk of wear and fracture of the tooth. Tooth width affects the bearing capacity and crushing efficiency of teeth. Wider teeth can withstand greater crushing force, but may lead to uneven crushing particle size; The tooth pitch is related to the force and permeability of the material in the crushing process, and the appropriate tooth pitch can make the material be fully broken between the teeth, while avoiding the material blockage.
In the connection with the tooth roller, the common key connection and bolt connection. The key connection is to process the keyway at the corresponding position of the tooth roller and the roller teeth ring, and connect the two together through the key. This connection method can transfer a large torque and ensure the synchronization of the tooth roller and the tooth ring when rotating at high speed. The bolted connection is to fix the tooth ring on the tooth roll through the bolt, which is relatively convenient to install and disassemble, and easy to replace the tooth ring after wear. Some advanced designs also use interference fit to form a close combination between the ring and the roll, further improving the reliability and stability of the connection.
roller teeth rings are usually made of wear-resistant steel because wear-resistant steel has a series of excellent properties that can meet the requirements of mineral sizer in harsh working environments.
Wear-resistant steel has excellent wear resistance, which is one of its most important characteristics. When working in mineral sizer, roller teeth ring is constantly in contact with various materials, subjected to strong friction and impact of materials. The alloying elements in the wear-resistant steel (such as chromium, molybdenum, vanadium, etc.) can form a hard protective film on the surface of the steel, effectively resisting the wear of the material and extending the service life of the tooth ring. For example, chromium can improve the hardness and oxidation resistance of steel, and the formed chromium oxide protective film can prevent the direct wear of the material on the steel matrix; Molybdenum element can enhance the strength and toughness of steel, so that the tooth ring is not easy to break when subjected to greater impact force; Vanadium can refine the grain of steel and improve the wear resistance and heat resistance of steel.
In addition to wear resistance, wear-resistant steel also has high strength and good toughness. The high strength makes the ring able to withstand huge crushing force, and will not be easily deformed or damaged when crushing hard materials. Toughness ensures that the tooth ring will not be brittle fracture when it is impacted, and it can absorb energy through its own deformation even when it is subjected to a large impact force, avoiding equipment failure and production interruption caused by sudden fracture. This combination of high strength and toughness makes roller teeth rings made of wear-resistant steel operate stably under complex working conditions.
Wear-resistant steel also has a certain corrosion resistance. In some special working environments, such as mineral sizer handling materials containing corrosive substances or working in humid environments, the tooth ring may be affected by corrosion. The alloying elements in wear-resistant steel can improve its corrosion resistance, so that it can adapt to these harsh working conditions and maintain good performance.
