How To Improve The Mineral Sizer Structure To Improve Its Crushing Efficiency
Mineral sizer mainly uses special wear-resistant tooth rollers to split and break materials at high speed (traditional mineral sizer uses low speed extrusion crushing), forming a high productivity mechanism. The mineral sizer produced by our factory is composed of transmission device, frame part, crushing roller, mechanical spring device, linkage mechanism and so on. It has the advantages of low noise, simple structure, convenient maintenance, high productivity, uniform particle size of the crushed material, low over-crushing rate, easy maintenance, sensitive overload protection, safety and reliability. Nowadays, mineral sizers technical efforts are as follows: 1, the tooth shape of the tooth plate is no longer extended to the traditional design, the tooth shape is large but the particle size can be well guaranteed, the life is very long, the life of the coarse tooth plate is 1.5 heart 2 years, the life of the fine tooth plate is not less than 10 months. The shape of the teeth is no longer the traditional fan teeth, fan teeth because of the shape and coal particle size requirements, the teeth can not be made too large, fine teeth can not exceed 15mm. Due to the limitation of domestic wear-resistant materials, the actual wear time will not exceed 3 months, and the life of our tooth plate with the same material will be increased by 34 times.
In the way of fabric, we no longer use the traditional mechanical fabric device, but use a unique structure and special materials vibration fabric. In ancient chinese scientist song yingxing’s book “Tiangong kai wu”, it is said that the principle of winnowing is actually the original application of vibrating cloth. The bottom of the distributor adopts a curved structure (according to the particle size distribution of the coal before crushing), and the steel plate is covered with a wear-resistant and smooth ultra-high molecular weight polyethylene plate, which can ensure that the coal moves to both sides and avoid a large number of coal falling in the middle of the tooth roll and causing partial wear.
Specially designed hydraulic tools for mounting and disassembling gear plates. The special tool is fixed on the frame, press the control button, and the hydraulic cylinder can move along the axial direction of the roller and push the tooth plate out. By slowly rotating the roller, the tooth plates distributed along the circumference can be pushed out in turn. When installing, the insert is also pushed into the oil cylinder, without the savage knock of the hammer, to ensure that the bearing is not damaged by the instantaneous impact force from the hammer, which greatly improves the service life of the bearing.
It is equipped with a simple and reliable hydraulic collision avoidance system that can parallel instantaneous action. It can be hard broken in the normal passage of coal and gangue to ensure that the particle size of the discharge will not exceed the standard. When encountering refractory materials such as iron blocks and rubber, it can be withdrawn in parallel, and the hard objects can be quickly returned to the original position after passing, protecting the tooth plate, bearing, shaft and so on from damage, ensuring the normal operation of the equipment, and effectively reducing the maintenance frequency and strength of the equipment. The pressure of the hydraulic system can be adjusted according to the coal type and the amount of impurities of the coal burning in the power plant, which can minimize the impact of hard objects on the equipment.
The mineral sizer has been developed with a high yield of 6000t/h, ending the situation of relying on imported equipment for more than 5000t/h. When the coal is dry, all kinds of screening machines can be normally screened, and frequent blocking will be found when the particle size is required to ensure that the water content is below 50mm and between 5% and 15%, which is the reason why the power plant does not use the first screening and then breaking. Through long-term tests, we found that when the screen mesh is ≥50mm, no matter how much water content is, it will not produce sticking. Therefore, we combined the screening machine with mineral sizer to develop the screening crusher with the input and output less than 300mm and the discharge less than 10mm, which greatly increased the output of mineral sizer.
According to the needs of users, some convenient devices can be added to improve the performance and grade of products. Such as debris cleaning device, automatic open detection door device, bearing temperature measurement device, etc. We will continue to carry out market research, track all the factory equipment, and constantly improve the product performance, and finally make the mineral sizer perfect.
