Device and method for detecting and removing bubbles during sample introduction

Abstract

The invention discloses a device for detecting and removing bubbles during sample introduction. The device comprises a feeding barrel, a first sensor, an accommodating cavity, a pump and a control assembly. The accommodating cavity is provided with an input end and an output end, the feeding barrel comprises a barrel body and a barrel head having a section size smaller than that of the barrel body, and the feeding barrel is connected with the input end by means of the barrel head. The pump is connected with the output end, the first sensor is arranged at the barrel head position for detectingair bubbles, and the pump and the first sensor are connected with the control assembly. The device for detecting and removing bubbles during sample introduction has the advantages of simple structure,high efficiency and practicality, and effectively ensures the addition amount of a liquid material. Accordingly, a method applying the device for detecting and removing bubbles during sample introduction comprises the steps of: detecting a liquid flow at the barrel head position by means of the first sensor, wherein the sensitivity is high since the section size of the barrel head position is small; and activating the pump for reverse pushing after detecting the bubbles, pushing out the bubbles to the barrel body and eliminating the bubbles. The method is simple and convenient in process. Themethod and the device are used in the field of liquid sample collection and detection.

Description

technical field [0001] The invention relates to the field of collection and detection of liquid samples, in particular to a device and method for detecting and removing air bubbles during sample injection. Background technique [0002] In some scientific research experiments, production and processing processes, the addition of some liquid materials is often involved. In the process of adding many liquid materials, in order to better control the amount of liquid materials added, the liquid materials are usually added through devices such as pipes or syringes. However, due to the addition of liquid materials, air may be mixed in, resulting in the generation of air bubbles. In many cases, the pipes or syringes and other devices have small diameters, and the air bubbles will not be automatically eliminated, and will flow in the pipes or syringes and other devices. Especially for syringe devices, due to the transition between the diameter of the barrel body and the barrel head...

AI Technical Summary

Problems solved by technology

Especially for syringe devices, due to the transition between the diameter of the barrel body and the barrel head, and the diameter of the barrel head is small, it is easy to generate air bubbles and it is difficult to eliminate

Usually, the amount of liquid materials added is calculated by volume, and the existence of air bubbles will affect the calculation of the amount of liquid materials added and the accuracy of adding liquid materials.

At the same time, the gas in the bubbles will also have a relatively large impact on scientific research experiments and production processing, resulting in poor experimental results or low production quality.

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