Roller Grinding Mill2019-01-14

Roller Grinding Mill

Summary:Roller Grinding Mill hydraulic system principle The Roller Grinding Mill is a machine for crushing brittle materials. When the steel ball pulverizes the material, the crushing force and the ball gap vary with the back pressure and p…

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Roller Grinding Mill hydraulic system principle

The Roller Grinding Mill is a machine for crushing brittle materials. When the steel ball pulverizes the material, the crushing force and the ball gap vary with the back pressure and particle size of the material, so the steel ball crushing force and the gap directly affect the finished product.

With the rapid development of hydraulic technology and electrical technology, Roller Grinding Mills generally use hydraulic systems to control the ball pulverizing force and adjust the ball gap. Since the mechanical equipment and the hydraulic system have pressure shock during the working process, the accumulator is used as a protection device in the hydraulic system of the Roller Grinding Mill. When the Roller Grinding Mill works normally and an accident occurs, the accumulator can absorb The pressure pulsation generated by the system can prevent the pressure shock of the system; at the same time, the accumulator can also protect the pressure gauge to ensure the long-term smooth, safe and reliable operation of the Roller Grinding Mill.

In the following, the paper analyzes and designs several functions of the hydraulic accumulator of a Roller Grinding Mill in a cement plant to illustrate the importance of the accumulator in the hydraulic system of the Roller Grinding Mill.

The role of the hydraulic system in the Roller Grinding Mill is mainly manifested in two aspects: one is to provide the steel ball with the pulverizing force required for the work; the other is that the hydraulic system can guarantee the setting of the Roller Grinding Mill when the material changes. The pulverizing force and the steel ball run under the gap. When the main motor of the Roller Grinding Mill is started, the hydraulic pump station motor and the hydraulic pump are first activated, and a part of the oil flows into the accumulator and the pressure element through the electromagnetic reversing valve and the electromagnetic ball valve, and the other part flows into the main hydraulic cylinder. The displacement of the steel ball is controlled by controlling the flow direction of the valve and the oil; the working pressure of the hydraulic cylinder is maintained by the inflation pressure setting value of the valve and the accumulator to control the pulverizing force of the steel ball. When the system meets the normal working conditions, the motor and the hydraulic pump stop working, and the system is in a state of holding pressure. At this time, the hydraulic part allows the main motor of the Roller Grinding Mill to start.

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