Water quality detection device based on water pressure feedback multi-layer single-point detection

Abstract

The invention discloses a water quality detection device based on water pressure feedback multi-layer single-point detection. The water quality detection device comprises a water pressure feedback self-adaptive depth single sampling mechanism, a rotary single-point detection mechanism, a cross contamination prevention and water immersion correction mechanism, a spiral resistance removal fixed control site power mechanism and a main operation self-control assembly. The invention belongs to the technical field of water quality detection devices, and particularly relates to a water quality detection device based on water pressure feedback multi-layer single-point detection. In order to solve the problem that cross contamination is easily generated among water samples at different depths in the sampling process, the water pressure feedback self-adaptive depth single sampling mechanism is arranged on the basis of dynamic characteristics and a feedback principle, and water pressure driving force in sinking sampling is applied, so that samples at different depths can be obtained through one-time sinking, and the sampling efficiency is improved. Through the cooperation of the rotary single-point detection mechanism and the cross contamination prevention immersion sample correction mechanism, single-point detection and placement and storage of samples are realized, and the main operation self-control assembly improves the practicability and operability of the water quality detection device.

Description

technical field [0001] The invention belongs to the technical field of water quality detection devices, and specifically refers to a water quality detection device based on water pressure feedback multi-layer single-point detection. Background technique [0002] In recent years, with the increasingly serious water pollution, water quality testing, as the basic work of water pollution control, is of great significance, but the existing water quality testing devices have the following problems: [0003] A: In still waters, there are differences in water quality at different depths, so it is necessary to measure the water quality at different depths, but the existing water quality testing devices cannot rule out cross-contamination to other deep water layers when sampling at one depth, mainly It is because the water body will generate eddy current at the moment of turning back after descending, so there is only one sampling opportunity at the same sampling position; [0004] B...

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Problems solved by technology

[0008] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a water quality detection device based on hydraulic feedback multi-layer single-point detection, aiming at the problem of cross-contamination between water layers at different depths during the sampling process, the creative Applying the dynamic characteristics and feedback principle, through the set water pressure feedback adaptive depth single sampling mechanism, it overcomes the need for one-time sampling in the existing technology (the same sampling point has one and only one sampling opportunity, and prevents cross-contamination caused by damage to the water layer ), and the contradictory problem of not being able to sample at one time (need to detect samples of water layers at different heights), by using the water pressure of different water layers in sinking sampling as the driving force, it is realized without any independent drive unit and control module. , only through an ingenious mechanical structure, the water quality detection device can be made to take samples of different water layers after one sinking and sampling, and the water pressure feedback self-adaptive depth single-sampling mechanism is kept closed during the ascent process to prevent the obtained water quality samples Re-contamination ensures the accuracy of sampling. In order to solve the problems of cross-contamination and storage of water quality samples during the detection process, the principle of segmentation is creatively applied. With cooperation, the single-point detection and storage of water quality samples are realized, and the accuracy of the water quality detection device is improved to a certain extent. In addition, the screw resistance fixed control point power mechanism and the main operation self-control assembly provided by the present invention, It solves the need to consume a lot of manpower and material resources for water quality testing, and improves the practicability and operability of the water quality testing device

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