Dust sampler having strong warning capability and being suitable for measurement in different time periods

Abstract

The invention relates to a dust sampler having strong warning capability and being suitable for measurement in different time periods. The dust sampler includes a main body, a handle, a support column, a flat board, a warning mechanism, four support legs, and a plurality of sampling units. Each sampling unit includes a cover plate, a sampling port, a sampling probe, a telescoping unit and a fixing unit. The telescoping unit includes a fixed board, a spring, a slide rod, a fixed ring and a hinging piece. The fixing unit includes a clamp board, a rotational rod, a side rod, a notch and a driving unit; the warning mechanism includes a second driving motor, a first connection rod, a fixing rod, a fixed piece, a slide piece, a sliding unit, a telescoping frame, a knocking piece, and two fourth connection rods. The dust sampler includes a plurality of the sampling units, so that the dust sampler can monitor concentration of dust in air in different time periods; in addition, by means of the warning mechanism, an operator can receive a warning signal when standing with back to the equipment or working in a noisy environment, thus enhancing the warning capability of the equipment.

Description

technical field [0001] The invention relates to the field of dust samplers, in particular to a dust sampler with strong alarm capability and suitable for measurement in multiple time periods. Background technique [0002] The dust sampler is an instrument for measuring the average concentration of dust in the air environment. The instrument usually consists of an air pump, a digital timer, a constant flow circuit, an undervoltage protection circuit and a safety power supply. The instrument is widely used in disease prevention, environmental monitoring, labor protection, safety supervision, military, scientific research and teaching, mining, metallurgy, petroleum It can also be used in conjunction with related instruments for health monitoring and evaluation in chemical, railway, and building materials departments. Through the use of samplers, the degree of environmental pollution can be grasped at any time. [0003] Existing dust samplers are usually equipped with a samplin...

AI Technical Summary

Problems solved by technology

[0003] Existing dust samplers are usually equipped with a sampling head to collect dust in the air. When using it, it is necessary to ensure that the filter membrane inside the sampling head is clean. After the sampling is completed, the sampling head needs to be removed for dust data collection. The filter membrane in the sampling head must be replaced during the next sampling. Therefore, a single sampling head can only detect the dust concentration in the air for a period of time. In actual application, the dust concentration in each time period is different. When detecting air quality in different time periods, the sampling head needs to be replaced frequently. Not only that, the existing samplers have poor alarm capabilities, and usually use indicator lights as alarms. When an alarm signal occurs (such as insufficient power remaining, inaccurate flow rate) ), use the flickering of the indicator light to remind the staff to pay attention, but the alarm effect of this alarm method is limited, especially when the staff near the sampler is working with their backs to the sampler, the staff cannot observe the flickering of the indicator light, and some The dust sampler has additional speakers, but in some noisy working environments (such as mines, trains), it is difficult for the staff to hear the alarm sound. Therefore, the existing dust sampler is not only difficult to measure the air quality of multiple time periods inspections with limited alerting capabilities

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