Coal mill gearwheel oil injection device and control method thereof

Abstract

The invention discloses a coal mill gearwheel oil injection device and a control method thereof, and belongs to the field of coal mill technical equipment. The oil injection device comprises a purgingloop, an oil injection loop, an oil injection output mechanism, an air compressing mechanism and a control module, and is characterized by further comprising a display screen, wherein the output endsof the oil injection loop and the purging loop are communicated with the oil injection output mechanism respectively; the input ends of the oil injection loop and the purging loop are connected withthe air compressing mechanism respectively; a fault monitoring mechanism is arranged on the oil injection loop; an oil injection mechanism in the oil injection loop and a purging mechanism in the purging loop are connected with the control module respectively; the output end of the fault monitoring mechanism is connected with the input end of the control module; the input end of the display screenis connected with the control module. The coal mill gearwheel oil injection device has the beneficial effects as follows: system abnormality caused by secondary meter faults is eliminated, the defects that a secondary meter has poor human-machine communication and cannot achieve remote display are overcome, fault remote control display is achieved through the remote transmission equipment state,and real-time monitoring of the equipment operating state is guaranteed.

Description

technical field [0001] A large gear oil injection device of a coal mill and a control method thereof belong to the technical equipment field of coal mills. Background technique [0002] The large gear oil injection device of the coal mill with double inlet and double outlet needs to complete the control of automatic oil injection and purging. In the prior art, relying on the local PLC secondary meter, the automatic fuel injection is realized by controlling the local equipment such as the fuel injection solenoid valve, and the fault judgment is realized through the counter state feedback. This method has disadvantages such as a high failure rate of the secondary meter, difficulty in adjusting parameters, and incapability of remote display. The oil injection of the large gear of the coal machine is abnormal, which affects the safety of the equipment; and the secondary meter head with PLC function currently used has the disadvantages of being unable to display in Chinese, comp...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a secondary meter that solves the shortcomings of poor human-machine communication and cannot be displayed in Chinese, eliminates system abnormalities caused by secondary meter failures, and facilitates timely adjustment of the fuel injection blower. The logic control cycle and time of sweeping, timely and remote viewing of equipment failures, convenient equipment maintenance, ensuring the operation status of equipment and real-time monitoring of coal mill large gear oil injection device and its control method

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