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Post Requirements
Post Requirements
Product information
Mining rolling screen advantages
1, self-cleaning: mining rolling screen on the applicability of raw coal is particularly strong, especially for high moisture, coal viscosity of raw coal screening effect is the * prominent, in the screening process will not appear blocking phenomenon. Because the cleaner is arranged below any screen piece on each screen shaft of the mining rolling screen, as long as the screen piece rotates, the cleaner keeps cleaning the screen piece. Clean up the adhesive of the screen sheet to realize the function of self-cleaning without stopping.
For the undersized material, when the moisture is high and the coal is sticky, a silo wall vibrator is installed on the outside of the collection funnel to ensure that the undersized material can descend smoothly, thereby avoiding the phenomenon of poor retention of the undersized material.
2. There are many varieties of screening: The single-layer screen surface achieves multiple varieties of screening and occupies a small space. The vibrating screen adopts double layers or multi-stages, which occupies a large space and has a large fatigue.
3. Small maintenance: The screen plates of the mining rolling screen are set on the screen shaft. The screen shaft does not directly contact the material. The screen shaft has no wear and corrosion. The normal service life is more than 5 years. The material contact surfaces of this machine are all added with wear-resistant lining plates. The screen plates are arranged in a random manner. Particles smaller than the size of the screen holes fall from the screen holes under the action of their own weight and the rotating force of the screen shaft. The screen plates are small in wear, the equipment maintenance amount is small, and the use cost is low.
The screen of the vibrating screen has been blocked for a long time and must be maintained only after the vibration has stopped, which increases the maintenance time and affects the use efficiency; at the same time, the screen of the vibrating screen is replaced every six months, which makes the replacement frequency of parts high and the maintenance cost is high.
4. Strong reliability: Each screen shaft of the mining rolling screen is equipped with an independent driving device. Due to the large number of screen stages, even if there is a problem with an individual driving device, the power supply to the driving device can be stopped separately, which does not affect the normal screening of other screen shafts, and maintenance can be carried out without stopping the entire mining rolling screen. It greatly enhances the reliability of the use of mining rolling screens.
Because the vibrating screen is a single drive, if the motor is damaged, the whole machine will stop running immediately, and it will not be possible to continue screening production. It can only wait for the motor to be repaired and replaced before it can continue to be used. The overall reliability is poor.
5. No vibration: The mining rolling screen should use multi-axis rotation to push the material forward and screen it at the same time; the screen surface consists of multiple rolling rollers arranged in parallel with screen plates installed alternately on them. During operation, each screen shaft rotates in the same direction, so that the material moves forward along the screen surface and is constantly stirred. Particles smaller than the size of the screen holes fall from the screen holes under the action of their own weight and the rotating force of the screen shaft. Particles larger than the size of the screen holes remain on the screen surface and continue to move forward and enter the next transportation link, ensuring that the overall process does not vibrate and protecting the site foundation.
During the vibration of the vibrating screen, when a large piece of gangue falls on the screen surface, the impact on the vibrating screen is very large. In addition, the vibrating screen throws up the large gangue many times, which is damaging to the screen, the overall structure, and infrastructure. Very strong, which is one of the main reasons why the vibrating screen is easy to be damaged. At the same time, due to vibration, it is impossible to seal and seal the vibrating screen. The open vibration operation produces a large amount of dust, seriously damaging the site environment and causing great damage to the physical and mental health of the operators.
6. Large processing capacity: Shenhua Group, 3000t/h, has a non-standard design for mining rolling screen products. It is tailored to the user's requirements for flow and screening particle size, the actual installation size on site, the maximum transportable size, etc., and is designed and produced in a targeted manner; it is small in size and has a processing capacity much larger than that of a vibrating screen. The mining rolling screen is designed based on the principle of the equal-thickness screening method. The equal-thickness screening method gives the material layer a greater acceleration than the ordinary screening method at the inlet end, which accelerates the movement speed of the material, and the material layer is quickly thinned and layered. After rolling at all levels, it is thinned one by one to advance forward, so as to achieve a certain particle size screening effect. The mining rolling screen can dilute and screen the thick coal seam transported by the superior; the screening efficiency is much higher than that of a vibrating screen.
Due to the low screening efficiency of the vibrating screen, the screen surface area must be large enough and the space occupied is very large. In addition, the screen is blocked for a long time and retains coal, resulting in a particularly low actual utilization rate and gradually decreasing processing capacity.
7. The noise and dust are small. The mining rolling screen has no vibration as a whole. It is suitable to adopt a sealed and enclosed structure to prevent the spread of noise and coal dust. In order to facilitate maintenance, observation and maintenance windows are provided, which is simple and convenient to use.
8. Wear resistance of screen plates: The material is very important. NM500. The screen plates of mining rolling screen plates have a large octagonal structure and have a plum blossom shape, which is not only conducive to the movement of materials, but also conducive to the stratification and penetration of materials; The screen plates are sleeved on the screen shaft, and the spare parts are unified and easy to replace; and it is made of wear-resistant material, which is strong and durable. Since the screen plates rotate in the same direction, there is little wear and a service cycle of more than one year.
Vibrating screens are consumables that need to be replaced frequently, which is time-consuming and expendable.
Mining rolling screen is based on the summary of the advantages and disadvantages of vibrating screen, roller screen, and spiral screen: it is a master.
Expansion of rolling screen functions:
1. Screening of large underground gangue
2. Dehydration of raw coal at coal mining face
