Cleaning structure for preventing sampling needle from hanging liquid

Abstract

The invention discloses a cleaning structure for preventing a sampling needle from hanging liquid. The cleaning structure comprises an upper body, a middle body, a lower body, a system liquid connector and a reinforced cleaning liquid connector; the upper body comprises first threaded holes and a small cavity hole; the first threaded holes are formed in the two side faces of the upper body; the small cavity hole is formed in the inner side of the upper body; two air holes are symmetrically formed in the two sides of the small cavity hole and in the inner side of the upper body; and through holes are formed in the penetrating positions of the two air holes and the small cavity hole. According to the cleaning structure for preventing the sampling needle from hanging liquid, liquid hanging after needle tip cleaning can be effectively avoided, the cleaning effect is good, the cleaning efficiency is high, the use amount of cleaning liquid is reduced, time and labor are saved, and the working efficiency is high.

Description

technical field [0001] The invention relates to the technical field of cleaning structures, in particular to a cleaning structure for avoiding liquid hanging on sampling needles. Background technique [0002] In the automatic chemiluminescence immunoassay analyzer, after the reagent needle and the sample needle are added, in order to avoid the interaction between different samples and reagents, when collecting the next sample or adding the next reagent, it is necessary to adjust the sample needle. Cleaning, whether the cleaning is clean or not directly affects the experimental results. [0003] At present, the sample needle or reagent needle is often cleaned by water column flushing, and the cleaning method of flushing the needle tip by water column has the following defects: [0004] (1) It is necessary to accurately adjust the relative position of the needle tip and the water column, and ensure that the area above the needle tip (the part immersed in the sample or reagent...

AI Technical Summary

Problems solved by technology

[0004] (1) It is necessary to accurately adjust the relative position of the needle tip and the water column, and ensure that the area above the needle tip (the part immersed in the sample or reagent during sampling) is fully wrapped by the water column to ensure that it is cleaned, which increases the difficulty of coordinate adjustment;

[0005] (2) When the needle tip is rinsed with one-sided water column, the needle tip on the opposite side of the water column cannot be effectively rinsed, and the rinse effect is poor, resulting in occasional unclean cleaning;

[0006] (3) It takes a long time to flush the needle tip, the flushing efficiency is poor, the cleaning solution is wasted, and the cleaning time is long;

[0007] (4) Water column washing, the water flow is unstable, and the needle tip hangs seriously after washing

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