20MG40.11.07.01.96 Medium speed coal mill scraper

Description of coal mill scraper 20mg40.11.07.01.96

The coal mill scraper 20mg40.11.07.01.96 is mainly used to clean the inside of the coal mill, especially the bottom area of the primary air chamber, to ensure the stable and efficient operation of the coal mill.

the scraper is installed on the drive plate of the coal mill and is symmetrically distributed, totaling two. With the rotation of the drive plate, the scraper operates synchronously. During the operation of the coal mill, the raw coal is transported to the grinding disc by the coal feeder, moves to the edge of the grinding disc under the centrifugal force generated by the rotation of the grinding disc, and is crushed into pulverized coal by the grinding roller. In this process, some impurities mixed in the raw coal, such as stone coal, pyrite, iron and other coarse and hard foreign matter, due to its own gravity is large, difficult to be carried by the primary wind to rise, will overflow from the edge of the grinding disc, through the wind ring into the bottom of the primary air chamber of the coal mill. At this time, the coal mill scraper 20MG40.11.07.01.96 began to play a role, it can fall into the bottom of the primary air chamber debris to the designated slag discharge port, and then into the stone coal box, for subsequent cleaning.

scraper 20MG40.11.07.01.96 and the transmission disc is stable and reliable, ensuring that there will be no loosening or falling off under high-speed rotation and complex working environment. At the same time, a specific normal gap is reserved between the scraper and the bottom of the primary air chamber, and the gap is strictly controlled within the range of 6 to 10mm. The setting of this gap is very critical. If the gap is too small, the scraper may have severe friction with the bottom of the primary air chamber during operation, which will not only aggravate the wear of the scraper, shorten its service life, but also cause abnormal vibration of the equipment, and even cause equipment damage; however, if the gap is too large, it will lead to incomplete cleaning of debris, some debris will accumulate at the bottom of the primary air chamber, affecting the ventilation effect of the coal mill and the conveying efficiency of pulverized coal, and in severe cases, it may also cause faults such as blockage of the coal mill.

, when the scraper is worn out during long-term use, resulting in a larger gap between the scraper and the bottom of the primary air chamber, the gap can be adjusted by the fastening bolt of the scraper. This design fully considers the wear of the scraper in the actual work, and provides a convenient and effective way for the maintenance of the equipment. Maintenance personnel can regularly check the degree of wear of the scraper and the size of the gap, once the gap is found to be beyond the normal range, it can be adjusted in time to ensure that the scraper is always in the best working condition.

Use of coal mill scraper 20mg40.11.07.01.96

In the actual operation process, the coal mill scraper 20MG40.11.07.01.96 faces many challenges. On the one hand, there are many kinds of sundries with different properties, and some sundries have high hardness, such as stone coal, iron block, etc., which will produce strong friction and impact on the scraper surface during the scraping process, which will easily lead to wear, scratches and even fracture on the scraper surface. On the other hand, the working environment inside the coal mill is relatively harsh, with factors such as high temperature, high pressure and high concentration of pulverized coal, these factors will accelerate the corrosion and aging of the scraper. Therefore, in order to ensure the long-term stable operation of the scraper, in addition to the daily gap adjustment and maintenance, it is necessary to regularly carry out comprehensive inspection and maintenance of the scraper. For example, according to the actual operation, the surface of the scraper is regularly treated with a surfacing wear-resistant layer to improve its wear resistance; at the same time, the connection part of the scraper is checked to prevent the normal work of the scraper from being loosened.

HKZX2025-09-29-A