Novel overstandard sample retention instrument

Abstract

The present invention discloses a novel overstandard sample retention instrument, which comprises an instrument body, wherein a water sample circulation pipeline is arranged on the right-rear side inside the instrument body and is connected to a water sample pre-treatment device, the water sample pre-treatment device is arranged on one side inside the instrument body, comprises a buffer cup, a filter, a homogenizing stirrer, a washing valve and a water discharge valve, and is connected to an overstandard sample retention device, the overstandard sample retention device comprises a peristaltic pump, a sampling bottle, a distribution arm and a water discharge funnel, the peristaltic pump is arranged on a peristaltic pump bracket positioned above the right side inside the instrument body, the sampling bottle, the distribution arm and the water discharge funnel are arranged inside a refrigeration box, the sampling bottle is arranged on a sampling bottle installation seat, the distribution arm is arranged above the sampling bottle, and the upper end of the instrument body is provided with a power supple and a control circuit board. The novel overstandard sample retention instrument of the present invention has characteristics of high integration degree, body miniaturization, and low cost.

Description

technical field [0001] The invention relates to an instrument for retaining samples exceeding the standard, in particular to a novel instrument for retaining samples exceeding the standard with three functions of water sample pretreatment, retaining samples exceeding the standard and refrigerating reagents. Background technique [0002] At present, the solution for online detection of pollution sources is generally online analysis instruments (COD, ammonia nitrogen, TOC, etc.) However, the existing technology and equipment will find the following two shortcomings in engineering practice: [0003] 1. On-line analysis instruments (COD, ammonia nitrogen, TOC, etc.) need to be equipped with water sample pretreatment devices. Most of the pretreatment devices currently on the market only have filtering functions, but not water sample homogenization functions, which cannot guarantee that the on-line analysis instruments ( COD, ammonia nitrogen, TOC, etc.) No large particles of imp...

AI Technical Summary

Problems solved by technology

[0003] 1. On-line analysis instruments (COD, ammonia nitrogen, TOC, etc.) need to be equipped with water sample pretreatment devices. Most of the pretreatment devices currently on the market only have filtering functions, but not water sample homogenization functions, which cannot guarantee that the on-line analysis instruments ( COD, ammonia nitrogen, TOC, etc.) No large particles of impurities enter into the water samples, resulting in large data spikes, which damage the interests of sewage enterprises, and are installed and used separately from online analysis instruments (COD, ammonia nitrogen, TOC, etc.), occupying limited monitoring The space of the station room increases the cost input

[0004] 2. Most of the reagents consumed by online analysis instruments (COD, ammonia nitrogen, TOC, etc.) do not have on-site refrigeration conditions, and the shelf life of reagents is short. Therefore, the data produced by online analysis instruments (COD, ammonia nitrogen, TOC, etc.) , there may be errors, which will affect the basis for punishing polluting enterprises; and if the reagents are replaced frequently, the cost of manual operation and maintenance will be very high

[0005] 3. The function of the commercially available ultra-standard sample retention instrument is single, and it is installed and used separately from the on-line analytical instruments (COD, ammonia nitrogen, TOC, etc.), occupying limited space in the monitoring station

[0006] 4. The hose is connected, and the water sample is easy to fake

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