Fluid mixer device for minisize reaction analytical equipment

Abstract

The invention provides a fluid mixer which is used for a mini-type reaction analysis device and has functions of reducing the dead volume in the mini-type reaction analysis device when different fluids are in switch sampling and eliminating pulse phenomena produced by liquid sampling or minor gas sampling when fluids are mixed. The fluid mixer comprises a mixing chamber, a main input tube, an output tube and more than one auxiliary input tube, and the main input tube is communicated with the front end of the mixing chamber; the output tube is communicated with the rear end of the mixing chamber; each auxiliary input tube enters the mixing chamber from the section between the middle part and the front end of the mixing chamber, and the pipeline at the front end of each auxiliary input tubeextending into the mixing chamber bends toward the direction of the output tube; and one-way valves and cut-off valves are sequentially arranged on the main input tube and the auxiliary input tubes near the mixing chamber in fluid flowing directions of all input tubes. Wherein, the inner cavity at the front end of the mixing chamber shows a horn shape, and the inner cavity at the rear end of the mixing chamber shows a funnel shape; and a heating jacket can be disposed at the outer side of the mixing chamber. The fluid mixer has advantages of simple structure, small volume, easy manufacturing,and economical and applicable design.

Description

technical field The invention relates to the technical field of fluid mixers, in particular to a micro-reaction analysis device with the function of reducing the dead volume when different fluids are switched and injected, and has the function of eliminating the pulse phenomenon caused by liquid sampling or a small amount of gas sampling during fluid mixing. Fluid mixers for microreaction analysis devices. Background technique The use of a fluid mixer is involved in the micro reaction analysis device due to the mixing of fluids. However, in the fluid mixer in the current micro-reaction analysis device, due to the unreasonable setting of the inlet pipe control valve before the fluid enters the mixing chamber, the dead volume due to the diffusion of the fluid is too large when different fluids are switched and injected, and the delay is delayed. The replacement time of the fluid is shortened, and the interference of the original fluid can not be eliminated for a long time; an...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to address the shortcomings of the existing fluid mixers that the dead volume is too large when different fluids are switched and injected, and the fluid mixing is not uniform when the fluid is mixed when the liquid is injected or a small amount of gas is injected. To provide a fluid mixer for a micro-reactor analysis device with a simple structure, which can reduce the dead volume when different fluids are switched and injected, and can eliminate the pulse phenomenon caused by liquid-phase sampling or a small amount of gas sampling when fluids are mixed.

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