Have you heard of the pulveriser machine? This kind of machine is not only widely used in mining and construction industries, but also appears more and more frequently in people’s daily life. Wall breakers, juicers; in fact, these are all types of pulveriser machines. Today, let us show you what a pulveriser machine is.
What is a pulveriser machine?
A pulveriser machine is a machine that pulverizes large-sized solid raw materials to the required size. According to the size of the crushed or crushed materials, pulverizers can be divided into coarse crushers, pulverizers and ultra-fine pulverizers.
In the process of pulverization, the external forces exerted on materials mainly include shearing, impacting, rolling and grinding. Shearing is mainly used in coarse crushing and crushing, and is very suitable for the crushing or crushing of tough or fibrous materials and large stones; impact is mainly used in crushing work, suitable for the crushing of brittle materials ; Rolling is mainly used in high-fineness pulverization and ultra-fine pulverization, and is suitable for most materials; grinding is mainly ultra-fine pulverization or super-large pulverizing equipment, which is further pulverization after pulverization.
However, in the actual crushing process, several external forces are often carried out at the same time, and for high-end crushers, they are specially customized, and each machine works differently.
Classification of pulveriser machines?
Pulverizing equipment is generally divided into four categories: mechanical pulverizers, jet pulverizers, grinders and cryogenic pulverizers:
Mechanical pulveriser machine is a machine that mainly uses mechanical methods to pulverize materials. It is further divided into tooth pulverizers, hammer pulverizers, knife pulverizers, turbo pulverizers, pressure-grinding pulverizers and cutting pulverizers. Crusher 6 subcategories:
- The toothed pulverizer is a machine that pulverizes the material by the high-speed relative operation of the fixed ring gear and the rotating toothed disc.
- Hammer mill is a machine that pulverizes materials by the relative movement of a high-speed rotating movable hammer and a fixed ring. Hammer mills are divided into hammer mills whose movable hammers are flakes and hammer mills whose movable hammers are blocks.
- Knife pulverizer is a machine that pulverizes materials by the relative movement of the high-speed rotating knife plate and the fixed ring gear.
- The turbo mill is a machine that crushes materials by the relative movement of the high-speed rotating turbine blades and the fixed ring gear.
- The pressure-grinding pulverizer is a machine that grinds and pulverizes materials by the relative motion of various grinding wheels and fixed grinding surfaces.
- The chipping pulverizer is a machine that pulverizes the material through the rotating motion of the cutting teeth.
The jet pulveriser machine is a machine that forms compressed air into an air stream through the nozzles in the pulverizing chamber, which promotes strong impact and friction between materials to achieve pulverization.
The grinder is a machine that grinds the material through the movement of the grinding body and the grinding ball to make the material into a superfine mixture.
The low temperature pulveriser machine is a machine that pulverizes the material after low temperature treatment.
What is the application scenario of the pulveriser machine?
The large-scale crusher is mainly suitable for the crushing and processing of mineral materials in metallurgy, building materials, chemical industry, mining, highway construction, water conservancy and hydropower, refractory materials, and iron and steel industries.
The small pulverizer is mainly suitable for material pulverization in food, chemical, pharmaceutical, greening, and these industries.
Coarse crusher is mainly used for crushing and pretreatment in various industries. Its main function is to process materials with larger diameters into granular materials with smaller diameters.
The pulverizer is mainly used for medium-fine pulverization work in various industries. Its function is to process granular materials to medium-fine particles of the required diameter for subsequent processing or into products.
The ultra-fine pulverizer is mainly used for ultra-fine pulverization in most industries. It is to pulverize the pulverized materials again to achieve the required material diameter. It is mainly used for raw material processing of high-end products.
The simple working principle of the pulveriser machine?
When the pulveriser machine is in production, the motor drives the main shaft and the turbine to rotate at a high speed, the turbine and the grinding wheel on the screen ring form a crushing and grinding group, and the structure is compact. When the material enters the machine cavity from the feeding hopper, the material entering the machine cavity is in the rotating airflow, and the tight friction and strong impact on the blade edge of the turbine, and regrind in the gap between the blade and the grinding block.
While crushing and grinding the material, the turbine sucks in a large amount of air, which cools the machine, grinds the material and conveys the fine material. The fineness of material crushing depends on the nature of the material and the size of the screen, as well as the throughput of the material and air.
Some common faults and solutions of pulveriser machines?
In the work of the pulverizer, some faults may occur due to some improper operations. For these more common faults, the following will introduce them to you:
Blockage due to excessive load on the pulverizer
During the working process of the pulveriser machine, if too much raw material is added at one time when feeding, it will cause the pulverizer to be overloaded and the pulverizer will be blocked. Therefore, it is necessary to avoid this situation as much as possible in the process of feeding. When feeding, you must always pay attention to the machine. When the load is too large, you must stop feeding in time. Otherwise, if it does not stop, the machine will be overloaded for a long time. Under the situation, the motor may be burned out, and the gain is not worth the loss.
If it is a low-power machine, it can be fed in batches and slowly; if it is a high-power machine, a feeder can be used for feeding. Under normal working conditions, the feeder is uniform and uniform. Yes, you can avoid the situation of adding too much material all at once.
After crushing, the material discharge channel is blocked or the exhaust network is not smooth
Due to the long-term operation of the pulverizer, the spiral blades will be worn during the working process. Once the wear is severe or the spiral blades fall off, the channel will be blocked. In addition, if the hoist belt is seriously worn, it will cause slippage and deviation during the rotation process. When these situations occur, the channel will also be blocked. In this case, the blades should be repaired and the belt should be replaced in time.
During the working process of the pulveriser machine, it is necessary to have an air network and air duct matched with the pulverizer to work. If the air duct or air network is blocked during the process, the wind force that needs to be used in the pulverizing process will be small or there is no wind, which also Can cause clogging of the grinder. Therefore, when the machine is working, it is necessary for staff to clean and inspect the passages and air network pipes of the pulverizer within the specified time to avoid this situation.
The type of material may also cause clogging problems
Due to the different varieties of pulveriser machine, the characteristics will also be different. Some materials have high water content, some cannot be crushed alone, and some materials contain too much lint. During the crushing process, due to the small aperture of the sieve of the crusher, the crusher will also be blocked. Therefore, when encountering these special materials, you must first look at the materials that can be pulverized by your own pulverizer. If they meet the requirements, they can be directly pulverized. If they do not meet the requirements, they should be processed first. If not, change the machine.
Other reasons cause the pulverizer to clog
During the working process of the pulveriser machine, there are many reasons for blockage, among which there are several common blockages: such as hammer wear, blockage of screen holes, and blockage caused by high moisture content of materials. To deal with these problems, it is necessary for the staff to regularly check the equipment, and to clean up the machinery and equipment in a timely manner, and to repair and replace some equipment that is more prone to wear and tear.
The noise of the grinder is too loud and the vibration amplitude is too large
During the installation of the pulveriser machine, it is necessary to always keep the machine on a horizontal line and have a certain degree of stability. Moreover, when installing the machine, the hardness of the overall frame should be checked in advance. If the inspection shows that the rigidity of the frame is insufficient, something should be added to adjust the hardness of the frame to meet the requirements.
The connection method of the pulverizer is generally direct-connected transmission, which is simple and easy to maintain. However, if the installation or the fit of the overall parts is not enough, it will cause the vibration and fluctuation of the machine to increase, and there will be a lot of noise. . Therefore, in the process of installing the machine, it is necessary to conduct an overall research on the machine, and ensure that the installation is correct according to the installation manual.
When the pulveriser machine is working, the electronic rotor and the motor rotor may not rotate at the same time. In this case, the motor of the pulverizer should be adjusted appropriately. For example, by adjusting the position of the front, rear, left, and right, the two rotors can rotate together by adjusting the height of the motor installation.
Bearing is an indispensable and important part of the machine. The performance of the bearing also has a direct impact on whether the machine can work normally. Overheating of the bearing will lead to bearing loss and shorten the service life. Therefore, when the bearing is found to be overheated, the machine should be stopped in time, and the heating should be checked to eliminate the fault.
What is the future development of the pulveriser machine?
The development trend of non-metallic mineral materials in the future is high-purity, ultra-fine and functional. Starting with the processing of ultra-high-purity non-metallic materials, various non-metallic materials are comprehensively developed and utilized. Although it can be purified by other methods, the cost is too high and it is not suitable for industrial production. At present, it is still the way of mechanical pulverization, so the future development of the pulverizer is still full of prospects.
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