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Alarm device for servo pressure-preventing rake in thickener

The technology of an alarm device and concentrator is applied in the direction of chemical instruments and methods, separation methods, precipitation separation, etc. It can solve the problems of failure of the current detection method and failure of the pressure rake alarm function, so as to facilitate data analysis and solve the problem of alarm failure. accurate effect

Inactive Publication Date: 2008-06-04
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current detection method often fails. The reason is that when the concentrator is pressed, the driving wheel and the track slip, the motor runs normally, and the motor current does not change or the current changes so little that the current detection cannot distinguish When this current change
The method of current detection can not achieve the alarm function of the rake prevention, resulting in the occurrence of rake events

Method used

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  • Alarm device for servo pressure-preventing rake in thickener

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Effect test

Embodiment approach 1

[0016] The invention includes a rake follow-up speed measuring mechanism and a control and alarm part of the concentrator.

[0017] The rake follow-up speed measuring mechanism of the concentrator mainly includes: connecting pulley 2, pin shaft 4, n-type coupling frame 5, follower wheel 6, bearing end cover 7, encoder coupling 9, encoder 10, plum blossom coupling 11 , transmission shaft 15, bearing transparent cover 7, shaft bracket U-shaped plug 17, spring 18,19: flat key.

[0018] The connecting plate 2 is connected to the rake of the concentrator by bolts, so that the follower wheel 6 whose surface is coated with polyurethane friction material can just be pressed onto the track of the concentrator. The pin shaft 4 connects the n-type coupling frame 5 and the connecting plate 2 together, and the n-type coupling frame 5 can rotate around the pin shaft 4 . The transmission shaft 15 connects the follower wheel 6 and the encoder 10 together. Tapered roller bearings 14 are insta...

Embodiment approach 2

[0023] The alarm method of the concentrator follow-up anti-pressure rake alarm device of the present invention takes the speed of the concentrator rake as the detection object, records the speed of the follower wheel 6 through the pulse encoder 10, and converts the pulse signal into an electrical signal through the signal conversion controller 20 , the electric signal passes the signal to the industrial control machine 22 through the wireless transmission station 21, and compares and judges whether to report to the police with the speed of the follower wheel 6 set in the alarm control program.

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Abstract

The alarm device for servo pressure-preventing rake in thickener includes two parts, one servo thickener rake speed measuring mechanism and one controlling alarm. The thickener rake speed measuring mechanism includes mainly one connecting board, one n-shaped shaft coupler, one servo wheel, one coder connecting part, one coder, one blossom shaped shaft coupler, one driving shaft, one bearing cover, one U-shaped connecting frame plug and one spring. The controlling alarm includes one signal converting controller, one radio transmission station and one industrial control computer. The present invention detects the speed of thickener rake, and has accurate warning, information management and in-line detection, and is suitable for use in thickener tank of coal separation plant.

Description

technical field [0001] The invention belongs to a concentrator rake pressure prevention and alarm device, in particular to a concentrator follow-up anti-pressure rake automatic alarm device which uses the speed of the concentrator rake as a detection object. Background technique [0002] In the process of slime water treatment in coal preparation plants, most of them use rake thickeners to clarify slime water. When the thickener is used, raking events often occur. Once the raking occurs, the concentration of the overflow water will exceed the standard, which will affect the quality and output of clean coal in the coal preparation plant. In severe cases, the production must be stopped for treatment, resulting in huge economic losses. If it is possible to prevent and forecast the harrowing event of the concentrator and take timely measures to prevent the occurrence of the harrowing event and ensure the smooth progress of production, it has practical economic significance. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D21/22
Inventor 寇子明高贵军李军霞吴娟卫进
Owner TAIYUAN UNIV OF TECH
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