digital divide network - article database

With the fast development of the mining industry, the mining machinery industry is gradually driven to develop rapidly. Previously, the mining industry did not develop to a certain scope, the ore beneficiation plant and coal dressing factory and other industries often used medium and small-sized machine to crush and grind materials. It is in recent years that they begin to crush materials with large-sized equipment. Because the production capacity of many industries gradually grows, and this production capacity is not able to satisfy the present production needs, for this reason, the cry for large-sized crushing equipment and rock grinding machines by many companies and plants is higher and higher. Gradually large-sized jaw crusher begins to be researched and developed.

In order to make sure the Raymond mill can work safely for a long time, the workers should equip the necessary examination and repair tools and the machine lubricating oil in the production shop. The grinder roll, grinder ring and the scraper knife are the main easy-wearing parts, so the workers should change new roll device after the machine is used for about five hundred hours, and cleanse and maintain the rolling bearing. Before and after the machine is used, the workers should also carefully check the small accessories such as the connection bolts and nuts and confirm whether the lubricating oil is sufficient or not. During the working process of the Raymond mill, there should be some technicians with professional technology and knowledge to watch it in order to avoid unnecessary emergency.

The common failures and the solutions of Raymond mill are listed as follows:

(1) When the grinding mill is working, the powder cannot be discharged or only a small amount of powders are discharged from the discharging mouth. It may be caused by that the powder locker is not adjusted well or not sealed up so that the powders are sucked back to the machine; the scraper knife is seriously abraded so that the materials cannot be scraped; the air flue is blocked; the pipe leaks air and is not sealed up. Then the workers should recheck and adjust the powder lock, change new scraper knife, seal up the pipe and clean the materials in the air blue and feed materials for grinding.

(2) The granularity of the final product is not even. The impeller of the analytical engine is abraded so that it cannot analyze the granularity of the powders or the air amount of the air blower is not appropriate, then the workers should change the impeller of the analytical engine and resolve the problem that the granularity of the powder materials are too large and increase the air amount so that the powder materials will not be too fine in granularity.ball mills:http://www.crusher-machine.com/21.html
ball mills:http://www.hx-crusher.com/ball_mill.html

(3) The main engine has loud noise and vibration and the amount of the materials feeding is small. The scraper knife is seriously abraded so that it cannot scrape the materials; the foundation bolt is loose; the materials are too hard so that the impacting force is huge; the grinder roll and ring are severely deformed. Then the workers should timely adjust the amount and granularity of the feeding materials, change new scraper knife, grinder roll and ring.

(4) The powder feeding bearing of the grinder roll device is damaged which is caused by the fact that it is not regularly maintained or cleaned for a long time, oil break or the seal ring is damaged, and then the workers should timely clean the bearing according to the regulation and change the oil seal and add lubricating oil.

(5) The air blower vibrates abnormally. There are powders deposited on the fan blade; the fan blade is abraded during the grading process so that it is not balanced; the foundation bolt is loose, and then the workers should clean the accumulated powders on the fan blade or change new blade; tighten up the foundation bolt without delay in order to ensure the stable operation of the machine.

Among the mining equipment, the production capacity of large-sized jaw crusher and impact crusher is outstanding, and this kind of crusher with high energy consumption and high rock thruput is often used in crushing process of large rocks and in coal dressing plants. At present, there are only few manufacturers in Henan Province who are able to produce 900×1200 large-sized jaw crusher.

The 900×1200 jaw crusher is one of our main products. Speaking not only from the technological process, but from the production capacity, the design and production is in the absolute lead in domestic and foreign countries. This machine is mainly used for medium granularity crushing of all kinds of rocks and large materials, and it is able to break materials with compression strength less than 320Mpa. It can be divided in to coarse crusher and fine crusher these two types. This series of products are complete in specifications and the material feeding granularity is between 125mm and 750mm and it is the ideal equipment for primary crushing. The jaw crusher has been widely applied in many industries such as mining, metallurgy, building materials, highway, railway, water conservancy and chemistry. Jaw crusher:http://www.hxjqchina.com/product-list_11.html
dryer machine:http://www.crusher-machine.com/24.html

The installation process of large-sized crusher is very complicated and it needs hoisting of the machine. During the test run of the equipment, the workers should carefully examine the circuit and the power distribution cabinet and avoid any accidents. During the production process of large-sized crushers, the workers should pay attention to the maintenance and if there is any abnormal situation, they should stop the equipment for examination and check the breakdown part and timely repair it in order to ensure the normal operation of the equipment.