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The hydraulic system of vertical mill is an important system, the main function of the hydraulic system is to break the grinding roller, which is when the internal grinding cavity wear parts wear, can stop open on both sides of the grinding roller mill, to replace the inside parts or repair. This type vertical roller mill including the hydraulic station, connected with the grinding roller cylinder and hydraulic pipe and other components.

The working principle of hydraulic system of vertical mill grinding equipment are as follows:the hydraulic device is mainly to raise and lower the grinding roller and setting, when lifting the grinding roller, hydraulic oil in the hydraulic cylinder can be a through the oil pump,switching valve into the cylinder, the cylinder because add hydraulic oil caused pressure increases, so the cylinder on the cylinder below produce upward thrust, such forces can promote the upward motion of the piston; the upper part of the oil cylinder and the hydraulic oil cylinder through the oil return pipe inside into the hydraulic station; when the pressure on the stage grinding roller, to open the valve on the oil pipeline, with pressure relief, or by switching valve to convert, let oil pump in the upper part of the oil cylinder hydraulic oil out into the cylinder body, thereby producing downward thrust force, this force can push the piston downwards, and the hydraulic oil return hydraulic cylinder lower block in the pressurizing station.

The working principle of the above is the grinding roller of opening and closing, pressure can support open roll grinding, pressure relief can be closed, this is also the mill wear-resistant parts replacement and repair convenience reasons.

Vertical hydraulic device in mill to mill the internal parts of the repair and replacement are convenient and setting, it can only control the grinding roller aspects of opening and closing,and can not control the small aspects of the regulation of grinding roller and the grinding disc distance size. The hydraulic device is all work together and pressurizing device, and the pressure device inside the join is the hydraulic oil pressure to open, the grinding roller, and the pressure relief can be closed grinding roller, the two of them is a mutual cooperation and mutual essential system, two cooperating system is to facilitate the users design. The hydraulic device is an important device in vertical mill, but the priority among priorities is inside to add hydraulic oil, add users to timely.