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23
2024
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02
Overview of the structure and working principle of wind sweeping coal mill
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This mill is a production equipment used to grind and dry pulverized coal.
1.Structure overview
The wind-swept ball mill is composed of the main components such as the feed pipe, the main bearing, the rotating part, the discharge pipe, the motor that drives the rotation of the cylinder, and the rubber reducer.
The bracket of the inlet and outlet pipes is bolted to the foundation.On the flanges at both ends of the cylinder, the grinding heads made of cast steel are bolted, and two different shapes of bar convex liners and bar concave liners are installed inside the cylinder, so that it forms a corrugated shape on the cross-section. The two ends of the bar liner are pressed by a square liner with a waveform. The square liner is bolted to the cylinder with a liner with an elliptical head.
In order to keep warm, a 10mm thick asbestos board insulation layer is padded between the cylinder body and the liner, and at the same time, a 40mm thick glass wool insulation layer is wrapped in a shell made of steel plate on the outside of the cylinder body.
A sealing device is installed between the end face of the hollow shaft and the feed pipe to prevent air leakage.The main bearing is a component used to support the operation of the grinding body, and a stringer for cooling is provided in the bearing.
The transmission system of the mill is connected to the reducer by an elastic coupling of an electric motor.The main shaft of the reducer is connected with a rubber block coupling and a pinion shaft. Since the coupling has a cushioning effect, the impact of the vibration of the mill on the reducer is reduced.The pinion gear engages with the large steel gear bolted to the flange of the cylinder.For installation and transportation, the large gears are made into a folio type.
For operational safety, protective plates are provided at both ends of the grinding head, and protective covers are also provided on the outside of the coupling.
The lubrication of the main bearing is lubricated by a circulating and cooling dilute oil station.
2.Working principle
The feeding equipment feeds raw coal into the rectangular slip pipe of the feed pipe of the mill.While the material is slipping down, the air inlet pipe under the rectangular slip pipe sends hot air, and the raw material enters the interior of the cylinder through the hollow shaft through the function of tilting and sliding down.A certain number of grinding bodies are installed in the cylinder body. Due to the rotating corrugated liner of the cylinder body, the grinding body is brought to a certain height, and the impact energy and friction energy when it lands are used to crush and grind the raw materials. While the raw materials are broken and ground, a specially designed fan passes through the discharge pipe of the mill. The ground fine is sucked out of the mill together with the hot air that has been used.The mixture of fine powder and hot air passes through a specially designed separator to separate the unqualified coarse and fine powder and send it back to the mill for re-grinding.The mixture of qualified fine powder and hot air is input into the cyclone dust collector, where the fine powder is separated from the hot air.
Chaoyang Liaoxi Heavy Machinery Manufacturing Co., Ltd. produces a complete range of wind-swept coal mills, with independent design and installation capabilities, perfect processing technology, product quality clearance and stable use. Manufacturers in need are welcome to visit our factory for procurement.
Coal grinder,Coal mill,Wind sweeping coal mill
Contact Information
Address: No.22, Section 3, Huanghe Road, Shuangta District, Chaoyang City, Liaoning Province
Telephone:+86 13904217870
WhatsApp:+86 13904217870
Fax: +86-421-3398828
Mailbox:wgl@cylxzx.com
Zip Code: 122000