Stratified sampling device for liquid and method for performing stratified sampling on liquid

Abstract

The invention relates to the technical field of sample collecting devices, in particular to a stratified sampling device for a liquid. The stratified sampling device for the liquid comprises a sampling pipe and a sampling pipe bracket; the sampling pipe comprises a plurality of sampling pipe units; each sampling pipe unit comprises a pipe body and a stop valve; each pipe body is made of a transparent material; the lower end of each stop valve is fixedly connected with the upper end of the corresponding pipe body in a sealed manner; sealed connecting mechanisms which are matched with each other are respectively arranged at the lower end of each pipe body and the upper end of the corresponding stop valve. The invention further provides a method for performing stratified sampling on the liquid. Compared with the prior art, the stratified sampling device for the liquid and the method for performing stratified sampling on the liquid have the beneficial effects that: (1) the sampling precision is high; (2) the liquid on each layer can be sampled at a time, so that the operation is convenient; (3) the sampling pipe consists of the sampling pipe units, so that the sampling pipe can be disassembled and assembled conveniently and is convenient to carry and store; (4) the original state of a sample cannot be damaged during a sampling process, and the pipe body is made of the transparent material, so that the sample can be observed intuitively.

Description

technical field [0001] The invention relates to the technical field of sample collection devices, in particular to a liquid layered sampling device and a method for liquid layered sampling. Background technique [0002] In the fields of environmental protection and tap water production, it is necessary to conduct stratified sampling and observation of water quality. For example, in the reaction sedimentation tank in the field of environmental protection, the demulsifier is used to separate the oil in the wastewater, and the sedimentation is used to make the suspended matter in the wastewater settle to the bottom layer. Sampling and observation, in order to timely adjust the demulsifier dosage, waste water flow, flow rate and other parameters of the reaction sedimentation tank. The traditional layered sampling method of liquid is to use hanging bucket to put rope to sample, that is, tie a rope to the bucket and sink the bucket into the liquid to a specified depth for samplin...

AI Technical Summary

Problems solved by technology

The traditional layered sampling method for liquids is to use hanging buckets for sampling, that is, tie a rope to the bucket and sink the bucket into the liquid to a specified depth for sampling. The sampling accuracy of this method is difficult to guarantee

The utility model patent with the authorized announcement number CN201212861Y discloses a miniature quantitative layered sampler. Although the sampling accuracy is improved, it has the following disadvantages: (1) Each layer of liquid needs to be extracted one by one, and the operation is complicated; (2) In order to meet the Deep sampling requires a long sampling rod, which is inconvenient to carry and store; (3) The process of taking samples and injecting samples prevents the samples from maintaining their original state underwater, which affects the observation effect

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