Flow path control system and method of automatic analyzer

Abstract

The invention relates to a flow path control system and method of an automatic analyzer. A first multi-way valve and a second multi-way valve are arranged for cooperation, when liquid is pumped into a reaction container from a corresponding liquid storage container or liquid is pumped into a corresponding liquid storage container from the reaction container, branch pipelines of the first multi-way valve can be kept to be communicated with the liquid storage container all the time, the first multi-way valve connected with the liquid storage container does not need to be switched many times, the conversion rate of the first multi-way valve is easily reduced, the service life of the system is prolonged, and maintenance cost is reduced. Besides, after the liquid in the liquid storage container is pumped, liquid in the branch pipelines connected with the liquid storage container can return to the portion below the first multi-way valve, accordingly when the first multi-way valve is switched later, no liquid exists in the branch pipelines of the first multi-way valve and an interface at a public end, cross pollution of the liquid in the branch pipelines and the liquid in the public end can be avoided, and analysis precision is easily improved.

Description

Technical field [0001] The invention relates to the field of analytical instruments, in particular to a flow path control system and a flow path control method of an automatic analyzer. Background technique [0002] The automatic analysis instrument usually realizes the automatic sampling analysis process through the control of pumps and valves. Due to the need to take liquid samples, multiple reagents, distilled water, and to discharge waste and waste water, the flow path system generally uses a multi-position valve (also called a multi-way valve) to switch between the flow path channels of a variety of containers. Use a multi-position valve to quantitatively take various liquids and transfer them to the reaction tank or the detection tank, or discharge the waste liquid in the reaction tank or the detection tank to the corresponding container. According to the structure of the multi-position valve, there will be different degrees of cross-contamination when the flow channels of...

AI Technical Summary

Problems solved by technology

According to the structure of the multi-position valve, there will be different degrees of cross-contamination when switching the flow channels of various containers, which will affect the analysis accuracy

In addition, when the traditional flow system takes the liquid in the same container multiple times or discharges the liquid to the same container multiple times, it needs to switch the multi-position valve multiple times. The utilization rate of the multi-position valve is high, and the operating life is correspondingly short, and the maintenance cost high

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