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Pipeline sweeping fuzzy control system of ball mill differential pressure thickness measurement system

A technology of fuzzy control system and ball mill, which is applied in the direction of electrical program control, displaying liquid level indicator through pressure measurement, program control in sequence/logic controller, etc. Inaccurate measurement values ​​and other problems, to achieve the effect of improving the efficiency of the main engine, reducing the frequency of pull-in and closing, and saving energy

Inactive Publication Date: 2008-11-12
NANTONG SOUTH LUBRICATING HYDRAULIC EQUIP
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Problems solved by technology

The disadvantage of this method is: there is no distinction between different coal types, dry humidity, full grinding operation, empty grinding operation..., fixed time period cycle, when the gap time is set short, the solenoid valve moves frequently and is easily damaged. interfere with system operation
When the gap time is set long, it is easy to block, resulting in inaccurate measurement values

Method used

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  • Pipeline sweeping fuzzy control system of ball mill differential pressure thickness measurement system
  • Pipeline sweeping fuzzy control system of ball mill differential pressure thickness measurement system
  • Pipeline sweeping fuzzy control system of ball mill differential pressure thickness measurement system

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Embodiment Construction

[0015] A pipe cleaning fuzzy control system for a differential pressure thickness measurement system of a ball mill, including upper and lower probes on the driving side of the ball mill, upper and lower probes on the non-driving side, and a pressure transmitter on the pipeline between the probe 1 and the gas source The pressure transmitter 2 and the pressure transmitter 2 are connected to the programmable logic controller (PLC) 3. The programmable controller controls the cleaning air source solenoid valve, The opening and closing of the solenoid valves of each cleaning pipeline obtains the pressure value formed by the state of the probe port before and after cleaning, and through comparison and calculation, the working interval time of the solenoid valve for controlling the cleaning air source and the solenoid valve of each cleaning pipeline is set to change. .

[0016] In Figure 4, since each device has four pipelines (and probe ports), each pipeline has different lengths an...

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Abstract

The invention discloses a pipeline cleaning fuzzy control system of a ball mill pressure difference thickness measurement system, which is characterized in that: the invention comprises upper and lower probes arranged on ball mill driving side, upper and lower probes arranged on non-driving side; a pressure transmitter is arranged; the pressure transmitter can be connected with a programmable controller; the programmable controller gains pressure values formed when cleaning the state of front and behind probe ports via grading for air source pressure, pipeline characteristics and state of probe ports, and opening and closing a control cleaning gas source electromagnetic valve and each cleaning pipeline electromagnetic valve, and sets working clearance time of the varietal control cleaning gas source electromagnetic valve and each leaning pipeline electromagnetic valve via comparing and calculating.

Description

Technical field: [0001] The invention relates to a pipeline cleaning control system of a pressure difference thickness measuring system of a ball mill. Background technique: [0002] The differential pressure material level detection system is the most advanced ball mill material level measurement device in the world. Its advantages are wide output signal value range, fast and accurate. However, the blockage of the probe port is the biggest weakness. In order to prevent the blockage of the probe port, the system is designed with a pipeline cleaning function for intermittent and regular cleaning. The disadvantage of this method is: there is no distinction between different coal types, dry humidity, full grinding operation, empty grinding operation..., fixed time period cycle, when the gap time is set short, the solenoid valve moves frequently and is easily damaged. interfere with system operation. When the gap time is set long, it is easy to block, resulting in inaccurate m...

Claims

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Application Information

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IPC IPC(8): B02C25/00B02C17/18G05B19/05G01F23/14
Inventor 刘明张爱东杨杰
Owner NANTONG SOUTH LUBRICATING HYDRAULIC EQUIP
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