CN216747759U

CN216747759U - Single-quantitative-ring double-quantitative flow path system

Info

Publication number: CN216747759U
Application number: CN202123325106.3U
Authority: CN
Inventors: 樊小燕; 朱志芳; 王忠庭; 李炼; 洪陵成
Original assignee: Delin Environmental Protection Technology Co ltd
Current assignee: Delin Environmental Protection Technology Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-06-14
Anticipated expiration: 2031-12-28

Abstract

The utility model is applied to a liquid quantitative taking device, in particular to a single quantitative ring and double quantitative flow path system, which comprises an electromagnetic valve, a multi-way valve, a quantitative ring, a detector, a peristaltic pump, a sampling tube and a waste liquid tube; the system comprises 2 electromagnetic valves, wherein each electromagnetic valve comprises a common end C, a normally closed end NC and a normally open end NO; the waste liquid pipe is connected to the NO end of the first electromagnetic valve, the air pipe is connected to the NC end, the common end C is communicated with one end of the liquid level detector through the peristaltic pump, the other end of the liquid level detector is communicated with the common end C of the second electromagnetic valve, the NO end of the second electromagnetic valve is communicated with the common port of the multi-way valve through the quantifying ring, the waste liquid pipe is connected to the NC end of the second electromagnetic valve, and a branch port of the multi-way valve is connected with a reagent. The system can adopt a single quantitative ring to achieve the purpose of double quantitative sample introduction.

Description

Single-quantitative-ring double-quantitative flow path system

Technical Field

The present invention relates to an automatic analyzer for quantifying liquids. And more particularly to a single dosing ring dual dosing flowpath system.

Background

The performance of the automatic analysis instrument mainly depends on a sampling quantitative system in the system, and at present, a quantitative ring technology is a good reproducibility performance in a precise sampling quantitative technology. When an automatic analysis instrument is developed, reagents and samples with different concentrations and large volume difference are usually needed, so that the samples with different volumes need to be quantified, if a quantifying pump is used for quantifying, the quantifying precision of the samples with large volumes and the samples with small volumes is difficult to ensure simultaneously, and the cost of the instrument is correspondingly increased by using a plurality of quantifying rings.

SUMMERY OF THE UTILITY MODEL

In order to obtain liquid quantification with any volume, the utility model provides a single-quantification-ring double-quantification flow path system, which comprises an electromagnetic valve, a multi-way valve, a quantification ring, a detector, a peristaltic pump, a sampling tube, an air tube and a waste liquid tube; the system comprises 2 solenoid valves, each solenoid valve comprises a common end C, a normally closed end NC and a normally open end NO; the waste liquid pipe is connected to the NO end of first solenoid valve, and the air hose is connected to the NC end, and common port C passes through peristaltic pump and liquid level detector's one end intercommunication, and liquid level detector's the other end and the common port C intercommunication of second solenoid valve, and the NO end of second solenoid valve passes through ration ring and the common port intercommunication of multi-way valve, and the waste liquid pipe is connected to the NC end of second solenoid valve, and reagent is connected to a branch mouth of multi-way valve. The system can adopt a single quantitative ring to achieve the purpose of double quantitative sample introduction.

Further, the solenoid valve in the single-metering-ring dual-metering flow path system may be replaced with a three-way valve having a common port and two ports that may communicate with the common port.

Furthermore, the length, the pipe diameter and the material of the quantitative ring can be selected according to the property and the quantitative volume of the sample.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

in the figure: 1, 4-solenoid valve; 2-a peristaltic pump; 3-a liquid level detector; 5-a multi-way valve; 6-quantitative ring; 11-an air tube; 12, 41-waste pipe; 51-sampling tube 1; 52-sampling tube 2; 53-sample introduction tube.

Detailed Description

The present invention is described in further detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.

As shown in FIG. 1, the single quantitative ring and double quantitative flow path system provided by the utility model comprises sampling tubes (51, 52), a sample inlet tube (53), a quantitative ring (6), waste liquid tubes (12, 41), electromagnetic valves (1, 4), a liquid level detector (3) and a peristaltic pump (2).

The system comprises 2 solenoid valves (1, 4), each solenoid valve comprising a common terminal C, a normally closed terminal NC and a normally open terminal NO; waste liquid pipe (12) is connected to the NO end of first solenoid valve (1), air pipe (11) is connected to the NC end, common port C passes through peristaltic pump (2) and the one end intercommunication of liquid level detector (3), the other end of liquid level detector (3) and the common port C intercommunication of second solenoid valve (4), the NO end of second solenoid valve (4) is through ration ring (6) and common port (0) intercommunication of multi-way valve (5), the waste liquid pipe is connected to the NC end of second solenoid valve (4), reagent is connected to a branch mouth (51, 52) of multi-way valve (5). When the electromagnetic valves (1 and 4) are electrified, namely the electromagnetic valves are opened, the common end (C) is communicated with the NO end, when the electromagnetic valves (1 and 4) are not electrified, namely the electromagnetic valves are closed, and the common end (C) is communicated with the NC end.

A first quantitative ring sampling and sample introduction step:

firstly, carrying out a first quantitative ring sampling action, referring to fig. 1, switching a multi-way valve (5) to be communicated with a sampling pipe (51), not electrifying an electromagnetic valve (1), electrifying an electromagnetic valve (4), clockwise rotating a peristaltic pump (2) to draw a sample from the sampling pipe (51) so as to fill the quantitative ring (6), and after a liquid level detector (3) detects liquid, stopping the rotation of the peristaltic pump (2) to carry out an action of discharging redundant liquid; the electromagnetic valves (1, 4) are not electrified, the peristaltic pump (2) rotates anticlockwise, and redundant liquid except the quantitative ring (6) is discharged from the waste liquid pipe (41).

And (3) carrying out a first quantitative ring sample injection action, switching the multi-way valve (5) to be communicated with the sample injection pipe (53), electrifying the electromagnetic valve (4), not electrifying the electromagnetic valve (1), rotating the peristaltic pump (2) anticlockwise, and discharging the liquid in the quantitative ring (6) from the sample injection pipe (53).

A second quantitative ring sampling and sample introduction step:

firstly, a second quantitative ring sampling action is carried out, referring to fig. 1, the multi-way valve (5) is switched to be communicated with the sampling tube (51), the electromagnetic valve (1) is not electrified, the electromagnetic valve (4) is electrified, the peristaltic pump (2) rotates clockwise to draw a sample from the sample inlet tube (52) so as to fill the quantitative ring (6), the liquid level detector (3), the peristaltic pump (2) and the air tube (11) of the electromagnetic valve (1) in sequence, and then the peristaltic pump (2) stops rotating.

And (3) carrying out a second quantitative loop sample injection action, switching the multi-way valve (5) to be communicated with the sample injection pipe (53), not electrifying the electromagnetic valve (1), electrifying the electromagnetic valve (4), and anticlockwise rotating the peristaltic pump (2), so that the whole pipeline liquid between the quantitative loop (6) and the air pipe (11) is discharged from the sample injection pipe (53).

Claims

1. A single-dosing ring double-dosing flow path system is characterized in that: the system comprises an electromagnetic valve, a multi-way valve, a quantitative ring, a detector, a peristaltic pump, a sampling tube, a sample inlet tube, an air tube and a waste liquid tube; the system comprises 2 solenoid valves, each solenoid valve comprises a common end C, a normally closed end NC and a normally open end NO; the NO end of the first electromagnetic valve is connected with a waste liquid pipe, the NC end of the first electromagnetic valve is connected with an air pipe, the common end C is communicated with one end of a liquid level detector through a peristaltic pump, the other end of the liquid level detector is communicated with the common end C of the second electromagnetic valve, the NO end of the second electromagnetic valve is communicated with a common port of the multi-way valve through a quantitative ring, the NC end of the second electromagnetic valve is connected with the waste liquid pipe, and one branch port of the multi-way valve is connected with a reagent; the system can adopt a single quantitative ring to achieve the purpose of double quantitative sample introduction.

2. A single dosing ring dual dosing flow path system as claimed in claim 1 wherein: the solenoid valves may be replaced by three-way valves having a common port and two ports that communicate with the common port.

3. A single dosing ring dual dosing flow path system as claimed in claim 1 wherein: the length, the pipe diameter and the material of the quantitative ring can be selected according to the property and the quantitative volume of the sample.