CN216670023U

CN216670023U - Novel continuous flow analyzer

Info

Publication number: CN216670023U
Application number: CN202122560243.9U
Authority: CN
Inventors: 姚志建; 焦伟; 李乐; 陈兴定; 赵润梅; 李涛
Original assignee: Jiangsu Guochuang Enviro Protection Technology Co ltd
Current assignee: Jiangsu Guochuang Enviro Protection Technology Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-06-03
Anticipated expiration: 2031-10-25

Abstract

The utility model relates to a novel continuous flow analyzer, which comprises a host body, wherein a reagent bottle rack, an automatic sample injector, a peristaltic pump, a reaction module, a detection module and a waste liquid collection module are sequentially arranged in the host body from top to bottom; the beneficial effects of the utility model are: the vertical stacking three-dimensional sample injection structure is adopted, so that the occupied area is small, the height of the pipeline is optimized and integrated, the cleaning and the maintenance are convenient, and the maintenance cost is low; the precision and the accuracy of the instrument are reserved and further improved, a Chinese interface can be adopted by matched software, the automation degree is high, the use is easy, the daily maintenance is simple, and the human-computer interaction is good.

Description

Novel continuous flow analyzer

Technical Field

The utility model relates to an analysis device, in particular to a continuous flow analyzer, and belongs to the technical field of water sample pretreatment, analysis and detection.

Background

Continuous flow injection analysis (CFA) is an emerging technology that has rapidly developed in recent years because of the advantages of fast detection rate, convenient operation, high accuracy and automation, and the like.

Continuous flow injection analysis is an automated sample analysis performed using an air-fragment continuous flow analysis technique. In a continuous flow system where samples and reagents are mixed, each sample is divided by a uniform bubble, and standard and unknown samples are processed in the same way and in the same environment to obtain accurate results by comparing absorbance.

However, the existing continuous flow analyzer mostly adopts a separated transverse connection structure, and the occupied area is large; the pipeline is unusual complicated, and the operation is complicated and fussy, and the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel continuous flow analyzer aiming at the defects of the existing continuous flow analyzer.

The technical scheme for solving the technical problems is as follows:

a novel continuous flow analyzer comprises a main machine body, wherein a reagent bottle rack, an automatic sample injector, a peristaltic pump, a reaction module, a detection module and a waste liquid collection module are sequentially arranged in the main machine body from top to bottom, the reaction module is sequentially provided with a digestion device, a photocatalytic reaction unit and a color development unit according to the liquid flowing direction, and the detection module comprises a detector and a defoaming system;

the feed liquor end of autosampler is connected with the reagent bottle of washing liquid and the sample that awaits measuring, the liquid outlet end of reagent bottle on the reagent bottle frame and autosampler is connected to reaction module's introduction port through the pump line after the peristaltic pump drive, the liquid outlet that lies in the color developing unit below in the reaction module is connected to the import of defoaming system through the pipeline, the test liquid export of defoaming system is connected to the import of detector through the pipeline, the export of detector is linked together through drainage pipeline and waste liquid collection module, the waste liquid export of defoaming system also is linked together through drainage pipeline and waste liquid collection module.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, be equipped with first introduction port, second introduction port and third introduction port in the reaction module, first introduction port is located the pipeline before the digester introduction port, the second introduction port is located the pipeline between digester and the photocatalytic unit, the third introduction port is located the pipeline between photocatalytic unit and the color development unit.

Furthermore, the third sample inlet is communicated with a color developing agent reagent bottle on the reagent bottle rack through a pump pipe of the peristaltic pump.

Furthermore, the first sample inlet is communicated with a special reagent bottle on the reagent bottle rack through a pump pipe of a peristaltic pump.

The color-developing agent and the special reagent used in the present invention can be selected from different kinds of color-developing agents and special reagents according to the test samples and items.

The color developing agent is a reagent for developing a complex generated after biochemical reaction to achieve the purpose of experiment, and is also called substrate solution generally, and the color developing agent has two types: universal color developing agent and specific color developing agent. Color-developing agents are classified into destructive color-developing agents and non-destructive color-developing agents according to whether or not the chemical composition of the test substance is destroyed.

The special reagent is a reagent specially used for a certain specified purpose, such as a reagent specially used for drug test, a reagent specially used for aldehyde ketone, a reagent specially used for residual chlorine, a reagent specially used for nitrate determination and the like.

The utility model has the beneficial effects that:

(1) the vertical stacking three-dimensional sample injection structure is adopted, so that the occupied area is small, the height of the pipeline is optimized and integrated, the cleaning and the maintenance are convenient, and the maintenance cost is low;

(2) the reaction module is convenient to disassemble and replace, and simultaneously supports multiple project analysis;

(3) in the degradation step of the sample, an ultraviolet photocatalysis method is used for replacing a high-temperature high-pressure digestion method in the existing standard method, so that the method is more environment-friendly and energy-saving;

(4) the precision and the accuracy of the instrument are reserved and further improved, a Chinese interface can be adopted by matched software, the automation degree is high, the use is easy, the daily maintenance is simple, and the human-computer interaction is good.

Drawings

FIG. 1 is a schematic view of the overall structure of a continuous flow analyzer of the present invention;

in fig. 1, a host body; 2. a reagent bottle holder; 2-1, special reagent bottles; 2-2, cleaning liquid reagent bottles; 2-3, a color developing agent reagent bottle; 2-4, a sample reagent bottle to be detected; 3. an autosampler; 4. a peristaltic pump; 5. a reaction module; 5-1, a digester; 5-2, a photocatalytic reaction unit; 5-3, a color development unit; 5-11, a first sample inlet; 5-12, a second sample inlet; 5-13, a third sample inlet; 6. a detection module; 6-1, a detector; 6-2, defoaming system; 7. and a waste liquid collection module.

Detailed Description

The principles and features of this invention are described below in conjunction with examples, which are set forth to illustrate, but are not to be construed to limit the scope of the utility model.

As shown in fig. 1, a novel continuous flow analyzer comprises a main body 1, a reagent bottle holder 2, an automatic sample injector 3, a peristaltic pump 4, a reaction module 5, a detection module 6 and a waste liquid collection module 7 are sequentially arranged in the main body from top to bottom, the reaction module is sequentially provided with a digestion device 5-1, a photocatalytic reaction unit 5-2 and a color development unit 5-3 in the liquid flowing direction, and the detection module comprises a detector 6-1 and a defoaming system 6-2;

the liquid inlet end of the automatic sample injector is connected with a cleaning liquid reagent bottle 2-2 and a sample reagent bottle 2-4 to be detected, the special reagent bottle 2-1 on the reagent bottle rack and the liquid outlet end of the automatic sample injector are driven by a peristaltic pump through a pump pipe and then connected to a first sample inlet 5-11 of the reaction module, the cleaning liquid reagent bottle is driven by the peristaltic pump through the pump pipe and then connected to a second sample inlet 5-12 of the reaction module, the color developing agent reagent bottle 2-3 is driven by the peristaltic pump through the pump pipe and then connected to a third sample inlet 5-13 of the reaction module, a liquid outlet below a color developing unit in the reaction module is connected to an inlet of the defoaming system through a pipeline, a test liquid outlet of the defoaming system is connected to an inlet of the detector through a pipeline, an outlet of the detector is communicated with a waste liquid collecting module through a liquid discharging pipeline, and a waste liquid outlet of the defoaming system is also communicated with the waste liquid collecting module through a liquid discharging pipeline.

The continuous flow analyzer of the present invention is used in practice as follows:

the method comprises the steps that a special reagent and cleaning liquid at the liquid inlet end of an automatic sample injector respectively and continuously enter a reaction pipeline under the driving of a peristaltic pump, a sample to be tested enters the reaction pipeline through the automatic sample injector during sample testing, is mixed with the special reagent under the driving of the peristaltic pump, enters a 105 ℃ high-temperature digestion device for digestion after air entrainment, enters a photocatalytic reaction unit, is degraded through the two steps, enters a color development unit, is sequentially combined with a color development agent, is mixed, reacts and develops color, enters a defoaming system through a pipeline for degassing, then enters a detector for detecting absorbance, calculates the content of the sample through a standard curve method, and discharges waste liquid into a waste liquid collection module through a liquid discharge pipeline of the defoaming system and the detector.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A novel continuous flow analyzer comprises a host body and is characterized in that a reagent bottle rack, an automatic sample injector, a peristaltic pump, a reaction module, a detection module and a waste liquid collection module are sequentially arranged in the host body from top to bottom, the reaction module is sequentially provided with a digestion device, a photocatalytic reaction unit and a color development unit according to the liquid flowing direction, and the detection module comprises a detector and a defoaming system;

the feed inlet end of autosampler is connected with the reagent bottle of washing liquid and the sample that awaits measuring, the liquid outlet end of reagent bottle on the reagent bottle rack and autosampler is connected to reaction module's introduction port through the pump line after peristaltic pump drive, the liquid outlet of lieing in the color developing unit below in the reaction module is connected to deaeration system's import through the pipeline, deaeration system's test solution export is connected to the import of detector through the pipeline, the export of detector is linked together through drain pipe way and waste liquid collection module, deaeration system's waste liquid export is also linked together through drain pipe way and waste liquid collection module.

2. The continuous flow analyzer according to claim 1, wherein the reaction module is provided with a first sample inlet, a second sample inlet and a third sample inlet, the first sample inlet is located on a pipeline in front of the sample inlet of the digester, the second sample inlet is located on a pipeline between the digester and the photocatalytic unit, and the third sample inlet is located on a pipeline between the photocatalytic unit and the color development unit.

3. The continuous flow analyzer of claim 2, wherein the third sample inlet is in communication with a developer reagent bottle on the reagent bottle holder via a pump tube of a peristaltic pump.

4. The continuous flow analyzer of claim 2 or 3, wherein the first sample inlet is in communication with a dedicated reagent bottle on the reagent bottle holder via a pump tube of a peristaltic pump.