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A field and environmental monitoring technology, which is applied in the direction of rainfall/precipitation gauge, meteorology, measuring device, etc., can solve the problems such as laboratory personnel's time for suction filtration and analysis is stretched, and achieves strong practicability and plasticity, easy to carry, lightens The effect of time pressure
Pending Publication Date: 2022-06-21
张更宇
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[0003] The snowfall samplers currently on the market all collect raw snow, which needs to be brought back to the laboratory by monitoring personnel to melt and filter and analyze. Based on the average indoor temperature of 25°C in the Northeast region, the 11 items that need to be tested for melting in the natural state The time for the minimum amount of snow samples is about 20 hours. Under the 24-hour time limit, the time left for the laboratory personnel to filter and analyze is stretched.
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[0028] Place the snowfall bowl on a 1.2-meter-high bracket according to the sampling specification, open the snowfall receiving cover (8), replace the microporous filter membrane of the filter layer (13), check the filter layer (13), suction filter conduit (14), collection The connection between the liquid cups (15), ensure that the connection is airtight and then close the snow receiving cover (8); debug the snow sensor (9), snow receiving cover (8), receiving hole (10), shrapnel (11), Central control module (2), suction filter module (3), temperature control module (4), power supply module (5), temperature sensor (6), liquid level sensor (7) are transmitted and connected to ensure normal signal transmission.
[0029] When the atmosphere snows, the snow sensor (9) transmits the signal to the central control module (2), and the central control module (2) controls the shrapnel (11) on the snowfall receiving cover (8) to open, and the receiving hole (10) starts to receive snowfal...
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Abstract
The snowfall bowl collector comprises a snowfall bowl, a snow sensor, a snowfall receiving cover, a receiving hole, an elastic piece, a heat preservation layer, a central control module, a suction filtration module, a temperature control module, an electricity supply module, a temperature sensor, a liquid level sensor, a filtering layer, a suction filtration guide pipe and a liquid collection cup. Wherein the outer layer of the snowfall bowl body is surrounded by the heat preservation layer, the upper portion of the snowfall bowl body is covered by the snowfall receiving cover, the snow sensor is located at the top end of the snowfall receiving cover, receiving holes are evenly distributed in the snowfall receiving cover, the daily receiving holes are closed by the elastic pieces, the elastic pieces are opened during snowfall, and the receiving holes receive snowfall to the snowfall bowl. According to the invention, automatic and multi-angle collection of atmospheric snowfall can be realized, collection and snow melting can be carried out at the same time according to a GB13580.2-92 sampling method, snow melting water is automatically treated according to a test item, and the atmospheric snowfall collection device is suitable for atmospheric snowfall collection in severe cold areas and complex field environments.
Description
technical field [0001] The invention belongs to the field of environmental monitoring, and relates to a bowl-shaped collector for collecting atmospheric snowfall. Background technique [0002] In the field of ecological environment monitoring, the "National Ecological Environment Monitoring Program" issued every year requires the monitoring of acid rain indicators, covering atmospheric precipitation and snowfall. Monitoring factors include pH, conductivity, sulfate, nitrate, fluoride, chloride, ammonium, potassium, sodium, calcium, magnesium, etc. At present, there are many types of atmospheric precipitation samplers on the market, and the technology is relatively mature, but there are few studies on automatic snowfall samplers. According to GB13580.2-92, the pH and conductivity of atmospheric precipitation (snow needs to be melted into an aqueous solution) can be directly tested for the solution, sulfate, nitrate, fluoride, chloride, ammonium, potassium, sodium, Monitorin...
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