The main components of the ball mill
Earlier in the overall structure of the several types of mill. The following will introduce the basic structure of the main components of the mill.
2.2.1 Rotary
Rotary parts include: cylinder,energy-saving grinding plant grinding head (end cap and hollow shaft), linings, diaphragm plate, blocking balls circle parts.
(1) cylinder
Cylinder is the main body of the mill, is one of the mill's main working parts, the material is in the cylinder body, the impact of the grinding media and grinding into flour.
¢Ù tube material
Cylinder work, in addition to static loading by the grinding media, but also by the impact of the grinding media. The cylinder is a thin-walled cylinder to withstand alternating heavy loads, and long-term low-speed continuous operation. Cylinder are not replacement parts to ensure safe and reliable work, and long-term continuous use, so the manufacture of the metal cylinder strength, better than plastic, and should have a certain impact resistance. The cylinder is welded by steel plate rolling, requiring better weldability. Therefore, it is generally used for the manufacture of the cylinder material is ordinary structural steel plate Q235, its strength, ductility, weldability, can meet these requirements. You can also use boiler plate 20g and 20 high-quality structural steel. The rapid development of high strength low alloy steel in China in recent years, the cylinder of the new design of large-scale mill use of 16Mn steel plate, the elastic strength limit ¦Òs about 50% higher than the Q235, the corrosion resistance of 50% higher than Q235.mineral processing spiral classifier impact toughness (especially at low temperatures) than the Q235. But is 16Mn also has a good machinability, weldability, wear resistance and fatigue resistance. So, 16Mn is currently manufacturing the cylinder is a higher priority on the materials used.
¢Ú cylinder manufacturing and processing
The cylinder is a thin-walled cylinder, the cylinder opening someone Kong (mill door) and the bolt hole. In the manufacture of the key is to ensure that its roundness and weld quality.
Should be fully utilized in the arrangement of tube steel, plate size,
Seek to reduce the consumption of the edges, corners material, but to set aside the side margin and coil bite into and exit, including the calculation of the required size. According to the capacity of the coil device should be selected large-size steel, and strive to make the longitudinal girth weld on the cylinder at least, In this way, we work Shengliao. Larger aspect ratio of the tube mill cylinder, in which the Ministry of welds may be strength principle, the central steel plate appropriate election thick, have a greater impact of stress concentration due to the vicinity of the weld, but also easy bolt fixed.
(3) mill gate and manhole
Each position on the cylinder to open a manhole,high-capacity Raymond mill whose role is to repair and replacement of the grinding body a variety of wearing parts (set for linings, diaphragm plate); loading and unloading of the grinding media and drawing mill sieve analysis curve to The mill sampling; stop grinding check the mill operating conditions.
Manhole on the cylinder should be open to the central location in the warehouse, so adjust the compartment board positions have a greater margin, but also facilitate the loading and unloading of the grinding media.
ball mill,cylinder,manhole
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