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Raymond Roller Mill

Raymond Roller Mill

Design of Raymond Roller Mill accumulator in hydraulic system

The accumulator converts the hydraulic energy of the oil into potential energy and stores it into potential energy when the system needs it. Therefore, the accumulator can be used as an auxiliary or emergency energy source to supplement the system leakage and stabilize the system. The working pressure, as well as the absorption of hydraulic system pressure pulsation and hydraulic shock.

1. Flow of hydraulic pump

The displacement of the selected hydraulic pump is 16mL/r, the motor speed is 1450r/min, the flow rate of the hydraulic pump is 19.72L/min, and the volumetric efficiency of the hydraulic pump is 0.83~0.87.

2. Calculation of accumulator inflation pressure

(1) In order to protect the airbag of the accumulator and prolong its service life, the accumulator pressure is 5.4~7.92MPa.

(2) The accumulator acts to prevent pressure shock, and its inflation pressure is 9.9 MPa.

Therefore, the inflation pressure of the accumulator in the hydraulic system is selected to be 6.5 MPa, and the inflation pressure of the other accumulator is 10 MPa.

3, absorption pressure pulsation design

When the Raymond Roller Mill is in normal operation, the unevenness of the feeding will cause the steel ball to pulverize and change, causing the displacement of the main hydraulic cylinder and the pressure fluctuation of the hydraulic system. The accumulator acts to absorb pressure pulsations and stabilize oil pressure in the system. During the operation of the accumulator, the change of the gas state conforms to the ideal gas state equation.

4, to prevent pressure shock design

During the operation of the Raymond Roller Mill, when the non-extrudable material passes, it will cause a large change in the pulverization of the steel ball, causing a large change in the displacement of the main hydraulic cylinder, and the pressure of the hydraulic system will suddenly increase. The accumulator acts to prevent sudden pressure shocks.

5, protection pressure meter

The hydraulic shock and pressure pulsation of the hydraulic system of the Raymond Roller Mill have a great influence on the service life of the instrument components. Therefore, when designing the hydraulic system of the Raymond Roller Mill, it is generally necessary to configure a small accumulator d for protecting the instrument components ( 0.63L) and a throttling component in series to make the system run smoothly.

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