阅读说明：本技术 一种多级定量环定量系统 (Multistage quantitative ring quantitative system ) 是由 朱志芳 樊小燕 王忠庭 李炼 洪陵成 于 2020-06-24 设计创作，主要内容包括：一种多级定量环定量系统,用于对高浓度样品进行自动稀释或作为定量体积跨度较大的仪器的定量系统,包括取样管、进样管、定量环、废液管、稀释液管、电磁阀及蠕动泵；所述系统包括数个电磁阀,每个电磁阀包括公共端C、常关端NC和常开端NO；第一电磁阀的NC端连接取样管,NO端连接进样管,公共端C通过第一定量环与第二电磁阀的NC端连通,第二电磁阀的公共端C通过第二定量环与第三电磁阀的NC端连通,按此重复,至倒数第二电磁阀的公共端C通过蠕动泵与最后一个电磁阀的公共端C连通,最后一个电磁阀的NC端连接稀释液管,从第二电磁阀开始所有电磁阀的NO端均连接废液管,可按需要增减定量环和电磁阀的使用数量以满足不同稀释倍数或定量体积的要求。(A multi-stage quantitative ring quantitative system is used for automatically diluting a high-concentration sample or is used as a quantitative system of an instrument with larger quantitative volume span, and comprises a sampling tube, a sample inlet tube, a quantitative ring, a waste liquid tube, a diluent tube, an electromagnetic valve and a peristaltic pump; the system comprises a plurality of solenoid valves, wherein each solenoid valve comprises a common end C, a normally closed end NC and a normally open end NO; the NC end of the first electromagnetic valve is connected with the sampling tube, the NO end of the first electromagnetic valve is connected with the sampling tube, the common end C of the second electromagnetic valve is communicated with the NC end of the second electromagnetic valve through the first quantitative ring, the common end C of the second electromagnetic valve is communicated with the NC end of the third electromagnetic valve through the second quantitative ring, the operation is repeated until the common end C of the penultimate electromagnetic valve is communicated with the common end C of the last electromagnetic valve through the peristaltic pump, the NC end of the last electromagnetic valve is connected with the diluent tube, the NO ends of all the electromagnetic valves starting from the second electromagnetic valve are connected with the waste liquid tube, and the using number of the quantitative rings and the electromagnetic valves can be increased or decreased according to needs to meet the requirements of different.)

1. A multi-stage quantitative ring quantitative system comprises a sampling tube, a quantitative ring, a waste liquid tube, a diluent tube, an electromagnetic valve and a peristaltic pump; the system comprises a plurality of electromagnetic valves, wherein each electromagnetic valve comprises a common end C, a normally closed end NC and a normally open end NO; the NC end of the first electromagnetic valve is connected with the sampling tube, the NO end of the first electromagnetic valve is connected with the sampling tube, the common end C of the second electromagnetic valve is communicated with the NC end of the second electromagnetic valve through the first quantitative ring, the common end C of the second electromagnetic valve is communicated with the NC end of the third electromagnetic valve through the second quantitative ring, the connection mode is repeated, the common end C of the penultimate electromagnetic valve is communicated with the common end C of the last electromagnetic valve through the peristaltic pump, the NC end of the last electromagnetic valve is connected with the diluent tube, and the NO ends of all the electromagnetic valves starting from the second electromagnetic valve are connected with the waste liquid tube.

2. The multi-stage dosing ring dosing system of claim 1, wherein: all solenoid valves of the multi-stage quantitative ring quantitative system can be replaced by a multi-way selector valve which at least has a common end and two branch holes which can be communicated with the common end.

3. The multi-stage dosing ring dosing system of claim 1, wherein: the length, the pipe diameter and the material of each quantitative ring can be selected according to the property and the volume of the sample.

Technical Field

The invention belongs to the technical field of sample introduction quantification of automatic analyzers, and particularly relates to a multistage quantification loop quantification system.

Background

The sampling quantitative system is one of the most critical parts of an automatic analysis instrument, and the accuracy and the function of the sampling quantitative system are the basis for ensuring the performance of the whole instrument. The quantitative loop technology is one of the existing precise sampling technologies with good reproducibility

When an automatic analysis instrument is developed, a high-concentration sample is often required to be diluted or different samples with large volume difference are required to be quantified, for example, a single quantification ring or a quantification pump is used for quantification, so that the quantification precision of a large-volume sample and a small-volume sample is difficult to ensure at the same time, and the cost of the instrument is increased by using a plurality of single quantification ring systems or a plurality of quantification pumps for quantification.

Disclosure of Invention

The invention aims to provide a quantitative system of an automatic analysis instrument, which enables the automatic analysis instrument to automatically dilute a high-concentration sample or accurately quantify the sample with larger volume span.

In order to achieve the above object, the present invention provides a multi-stage quantitative ring quantitative system, which comprises a sampling tube, a sample feeding tube, a quantitative ring, a waste liquid tube, a diluent tube, an electromagnetic valve and a peristaltic pump; the system comprises a plurality of electromagnetic valves, wherein each electromagnetic valve comprises a common end C, a normally closed end NC and a normally open end NO; the NC end of the first electromagnetic valve is connected with the sampling tube, the NO end of the first electromagnetic valve is connected with the sampling tube, the common end C of the second electromagnetic valve is communicated with the NC end of the second electromagnetic valve through the first quantitative ring, the common end C of the second electromagnetic valve is communicated with the NC end of the third electromagnetic valve through the second quantitative ring, the connection mode is repeated, the common end C of the penultimate electromagnetic valve is communicated with the common end C of the last electromagnetic valve through the peristaltic pump, the NC end of the last electromagnetic valve is connected with the diluent tube, and the NO ends of all the electromagnetic valves starting from the second electromagnetic valve are connected with the waste liquid tube.

Further, all the solenoid valves of the multi-stage quantitative ring quantitative system can be replaced by a multi-way selector valve which at least has a common end and two branch holes which can be communicated with the common end.

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

Drawings

FIG. 1 is a first embodiment of the present invention;

FIG. 2 is a second embodiment of the present invention;

in the figure: 1, 15-sampling tube; 2, 3-quantitative ring; 4, 16-sample tube; 5, 6, 7-waste pipe; 8-a diluent tube; 9, 10, 11, 12-solenoid valves; 13-a peristaltic pump; 14-common to the multi-way selector valves.

Detailed Description

The multi-stage quantitative loop quantitative system of the present invention will be described in detail with reference to the accompanying drawings.