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Mine-used dust concentration sensor having automatic cleaning function

A dust concentration, automatic cleaning technology, applied in scientific instruments, measuring devices, suspension and porous material analysis, etc., can solve problems affecting the detection accuracy of sensors, and achieve the effect of reducing maintenance difficulty, delaying maintenance cycle, and improving detection sensitivity

Inactive Publication Date: 2015-12-23
YANGZHONG SOUTH MINE ELECTRICAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The accumulation of dust on the photodiode will seriously affect the detection accuracy of the sensor

Method used

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  • Mine-used dust concentration sensor having automatic cleaning function
  • Mine-used dust concentration sensor having automatic cleaning function
  • Mine-used dust concentration sensor having automatic cleaning function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] As shown in the figure, a mine dust concentration sensor with automatic cleaning function is characterized in that it includes a sensor housing 1, the sensor housing 1 is rectangular, and an air inlet nozzle 2 and an air outlet 3 are arranged on it. The air inlet nozzle 2 is in the shape of a cone hole and is located at the upper end of the sensor housing 1, and the air outlet 3 is located at one side of the sensor housing 1;

[0018] The sensor housing is provided with a monitoring darkroom 4, and the detection darkroom 4 includes a scattering chamber 5 and a monitoring chamber 6. The scattering chamber 5 is provided with an air intake pipeline 7, an exhaust pipeline 8 and a laser 9. The air pipeline 7 communicates with the scattering chamber 5 and connects the air inlet nozzle 2, the exhaust pipeline 8 communicates with the scattering chamber 5 and connects with the air outlet 3, the exhaust pipeline 8 is provided with a main fan 10, and the laser 9 is fixed Set on on...

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Abstract

The invention provides a mine-used dust concentration sensor having the automatic cleaning function. The sensor comprises a sensor shell, the sensor shell is provided with an air inlet nozzle and an air outlet, a monitoring dark chamber is formed inside the sensor shell, the monitoring dark chamber comprises a scattering chamber body and a monitoring chamber body, the scattering chamber body is communicated with the air inlet nozzle and the air outlet, a laser device is arranged, the monitoring chamber body is provided with a photosensitive diode and a circulation pipeline, the two ends of the circulation pipeline are communicated with the monitoring chamber body and arranged oppositely, and the circulation pipeline is internally provided with a circulating fan and a dust filter screen; the sensor is characterized in that when dust concentration is detected, the circulating fan continuously sucks air adjacent to the surface of the photosensitive diode into the circulation pipeline for filtration and sends fresh air obtained after filtration back to the surface of the photosensitive diode, so that a clean air film layer is formed, dust is prevented from adhering to the surface of the photosensitive diode in a sucked mode, and thereby the detection sensitivity of the dust concentration sensor is improved.

Description

technical field [0001] The invention relates to mining equipment, in particular to a mining dust concentration sensor with an automatic cleaning function. Background technique [0002] Mine dust concentration sensor is a product developed to meet the monitoring of dust concentration in coal mines. This product uses the principle of laser scattering to detect the dust concentration value according to the light intensity received by the photodiode under different dust concentrations. Due to the special environment of coal mines, the dust concentration is generally relatively high. After 2-3 months of working for ordinary sensors, a lot of dust will accumulate inside the sensor. The accumulation of dust on the photodiode will seriously affect the detection accuracy of the sensor. Contents of the invention [0003] In view of the above problems, the present invention proposes a mine dust concentration sensor with automatic cleaning function. [0004] For solving above techni...

Claims

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Application Information

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IPC IPC(8): G01N15/06
Inventor 袁立清
Owner YANGZHONG SOUTH MINE ELECTRICAL
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