Direct-reading dust concentration detector

Abstract

The invention relates to a direct-reading dust concentration detector, which belongs to the technical field of environmental protection and safety facilities. The direct-reading dust concentration detector provided by the invention comprises a box body, a dust sampling head arranged outside the box body, a dust detector, a control circuit board, an airflow bumper and a pneumatic device, wherein the dust detector, the control circuit board, the airflow bumper and the pneumatic device are arranged in the box body; the air outlet of the dust detector is connected with the air inlet of the airflow bumper through a connecting pipeline. The direct-reading dust concentration detector is characterized in that a pressure difference detecting device is arranged on the connecting pipeline; a first pressure sensor and a second pressure sensor are arranged on the control circuit board; and the first pressure sensor and the second pressure sensor are connected with the air pressure pipeline of the pressure difference detecting device. The direct-reading dust concentration detector provided by the invention has the advantages that airflow which passes through the connecting pipeline is stable, thereby ensuring that dust in the air is can be detected accurately.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and safety facilities, and in particular relates to a direct-reading dust concentration detector, which is used to detect the dust concentration in the air in the workplaces of industrial and mining enterprises so as to understand the quality of the air, and is especially suitable for coal mine lanes And other workplaces containing explosive gas such as air detection and monitoring of powder processing enterprises. Background technique [0002] The positive significance of the direct-reading dust concentration detector recommended by China Invention Patent Authorization Announcement No. CN101603912B is that it changes the previous monitoring method of measuring the dust concentration in the air by weighing, and avoids the influence of climate changes such as humidity changes and vibration. The accuracy of the detection effect is limited, and it can also be used by the monitoring d...

AI Technical Summary

Problems solved by technology

[0004] The above structure connects the air outlet 21 of the dust detector 2 directly with the air inlet 41 of the airflow buffer 4 through the connecting pipeline 211, so the connecting pipeline 211 Internal airflow fluctuations will affect the accuracy of detection

Because in the actual use process, the air flow of the connecting pipeline 211 is not constant, and frequent fluctuations often occur, and the dust concentration in the air measured under the condition of air flow fluctuations cannot be truly reflected

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