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Non-pressure three-product heavy medium cyclone second-section feeding port blockage alarm device and method

A dense medium cyclone and alarm device technology, applied in the direction of the cyclone device, etc., can solve the problems of unqualified clean coal quality, clean coal centrifuge suffocation, clean coal belt overload, etc., to reduce the impact time of failure, The effect of reducing secondary accidents and ensuring product quality

Pending Publication Date: 2019-01-15
SHANDONG JINING CANAL COAL MINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through traditional human identification, it may be due to the negligence of the centralized control personnel that the discovery was not timely, resulting in serious adverse consequences when the cyclone was found to be clogged, such as a large amount of raw coal entering the clean coal, resulting in unqualified clean coal quality; or raw coal entering the clean coal If the amount of coal is too large, the clean coal centrifuge will be overloaded and suffocated; moreover, the clean coal belt will be overloaded, causing adverse consequences such as crushing the clean coal belt.

Method used

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  • Non-pressure three-product heavy medium cyclone second-section feeding port blockage alarm device and method
  • Non-pressure three-product heavy medium cyclone second-section feeding port blockage alarm device and method
  • Non-pressure three-product heavy medium cyclone second-section feeding port blockage alarm device and method

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Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1 A method for alarming the blockage of the second-stage feed port of a pressureless three-product dense medium cyclone is shown, and the method includes the following steps:

[0031] S1 During normal production, adjust the operating frequency of the motor of the media pump and the density of the media suspension. After a certain period of time, record the motor operating frequency f1, the working pressure of the cyclone P1, and the density of the suspension ρ1;

[0032] In S2 production, write down the pressure P2 value when the inlet of the second stage of the cyclone is blocked at the operating frequency of the motor at S1 and near the density, select a minimum value, and calculate the difference between the blockage and normal production with P2-P1 P3;

[0033] According to S2, S3 obtains the alarm value P when the second stage feed port of the cyclone is blocked, and the calculation formula of P is: P=P3+P1*(f / f1)2*(ρ / ρ1);

[0034] In the formula, ...

Embodiment 2

[0040] Such as figure 2 The shown is a non-pressure three-product dense medium cyclone second-stage blockage alarm device, including pressure sensor 6, field equipment 2, PLC programmable logic controller 3, upper computer 1, voice system 4 and voice alarm 5. The pressure sensor 6, the field device 2 and the upper computer 1 are all electrically connected to the PLC programmable logic controller 3 through signal lines, and the voice alarm 5 is electrically connected to the voice system 4, and the The voice system 4 is electrically connected with the host computer 1 through a signal line.

[0041] The pressure sensor 6 is set on the material inlet of the first section of the hydrocyclone, and is used to collect the working pressure of the hydrocyclone.

[0042] The PLC programmable controller cooperates with the pressure sensor 6, and through program editing, it can automatically identify the pressure fluctuation when the second-stage feed port of the cyclone is blocked.

[...

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Abstract

The invention relates to the technical field of coal mining, in particular to a non-pressure three-product heavy medium cyclone second-section feeding port blockage alarm device and method. The pressure situation of a non-pressure three-product heavy medium cyclone during production can be intelligently detected, by arranging a pressure sensor at a cyclone first-section medium collection pipe feeding port for collecting the working pressure of the cyclone, in combination with a programmable controller (PLC), through program edition, the pressure fluctuations can be automatically identified when a cyclone second-section feeding port is blocked, when a set alarm pressure value is reached, alarm information is popped up in an upper computer operation interface of a centralized control room, meanwhile, a voice alarm is issued in combination with a voice system, staff is reminded of alarms, coal feeding can be automatically stopped, impact of accidents is eliminated with the highest speed and the smallest impact range, and the device has high creativity.

Description

technical field [0001] The invention relates to the technical field of coal mine collection, in particular to a blockage alarm device and method for a second-stage feed port of a pressureless three-product dense medium cyclone. Background technique [0002] In the coal washing plant produced by the non-pressurized three-product dense medium cyclone, large pieces of gangue often block the inlet of the second stage of the cyclone, and it is found that the second stage of the cyclone basically depends on the centralized control personnel to find out the middle gangue The reduction of sieve material or the sudden increase of the amount of clean coal and the increase of the pressure of the cyclone are used to identify the blockage of the second stage of the cyclone. Through traditional human identification, it may be due to the negligence of the centralized control personnel that the discovery was not timely, resulting in serious adverse consequences when the cyclone was found to...

Claims

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Application Information

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IPC IPC(8): B04C11/00
CPCB04C11/00
Inventor 袁会康朱泽建张保健
Owner SHANDONG JINING CANAL COAL MINE
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