Water sample automatic collecting device

Abstract

The invention discloses a water sample automatic collecting device, comprising: a sampling device and a water sample bucket, wherein the water sample bucket is internally provided with a water qualitydetecting device, and is mounted with a first drain pipe, a second drain pipe, a first sampling pipe and a second sampling pipe; the first sampling tube is provided with a bottom valve and a self-priming pump, a filter is disposed between the bottom valve and the self-priming pump, and a return pipe is disposed between the self-priming pump and the water sample bucket; the return pipe, the firstdrain pipe, the second drain pipe, and the second sampling pipe are respectively provided with valves; and the return pipe, the first drain pipe, the second drain pipe and the bottom valve are respectively disposed in accordance with the sampling device. By setting the bottom valve, the filter and the water quality detecting device, the structure effectively avoids secondary pollution to the watersample, and makes the monitoring result more accurate. And the device, with a simple structure, greatly improves the user experience, and is suitable for large-scale promotion.

Description

technical field [0001] The invention relates to the technical field of water sample collection, in particular to an automatic water sample collection device. Background technique [0002] At present, water quality automatic on-line monitoring instruments generally use the peristaltic pump attached to the instrument to absorb water through the hose or use an external self-priming pump and then through the self-priming pump pipeline to obtain water samples, but the self-priming method through the peristaltic pump has the following disadvantages : 1. Peristaltic pumps generally have low suction, and the time to directly extract water samples is slow, which affects the time of sample preparation; 2. Peristaltic pump pipelines are prone to residual water pollutants, causing secondary pollution to water samples, and easy to block pipelines; 3. The flow rate of water pumped by the self-priming pump pipeline cannot be adjusted. Usually the flow rate is too fast, resulting in a large...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an automatic water sample collection device to solve the technical problem that the sampling method in the prior art is likely to cause secondary pollution to the water sample and cause unstable effects on the monitoring process

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