Rain drop sampling device

Abstract

The invention belongs to the water and soil conservation research trial installment domain, which relates to a raindrop sample installment to gather the raindrop test specimen in the rain simulation test. Its characteristic is that which is composed by the lap (1), the host box (2), false bottom (4), the screw (5), the support (6), the hand(7); the width of lap (1) surpasses the main box width, make the scoop channel in lap (1)two sides and engage together with the host box (2) two sides scoop channels, the lap (1) may skid along the mortise; the screw (5) installs under the main box (2) , when the screw (5) screws tight, the false bottom (4) is fixed on the host box (2), after the raindrop descends on the filter paper, relaxes the screw(5) may take out the false bottom (4). The raindrop sample is made of the transparent light quality plastic material. The invention effect and profit are: it designs the scoop channels on the lap and the host box, prevented the produced hydrocele to infiltrate on the filter paper, and causes the measurement result to be accurate. The equipment convenient carries, is advantageous for fixed and the take down filter paper.

Description

technical field [0001] The invention belongs to the technical field of soil and water conservation research devices, and relates to a raindrop sampling device capable of collecting raindrop samples in a rainfall simulation test, and the device can be used to measure the particle size of raindrops. Background technique [0002] At present, the most advanced raindrop sampling device consists of three parts: a cover plate, a main box, and a bottom plate. Two grooves are designed on both sides of the main box so that the cover plate can be embedded and slide (as shown in Figure 1). Before sampling, paste the circular filter paper coated with the mixed powder of red and talcum powder on the middle of the bottom plate of the sampler, and close the cover plate. When sampling, move the cover at a constant speed, close the cover quickly after the raindrops fall on the filter paper, and take out the filter paper. The size of the raindrop particle size can be calculated by the color s...

AI Technical Summary

Problems solved by technology

However, through the raindrop sampling test, we know that when the rainfall intensity is high, water will quickly form on the cover plate, and the water will flow into the filter paper of the bottom plate through the pores between the grooves, forming superimposed color spots, making the measurement inaccurate

In addition, due to the need to replace the filter paper pasted on the bottom plate many times, the filter paper is more likely to get wet during the replacement process, which affects the accuracy of the test results

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