Infusion method of liquid chromatogram and dual-drive high pressure pump

Abstract

The invention relates to an infusion method of liquid chromatogram and a dual-drive high pressure pump. The infusion method comprises a step of adopting the dual-drive high pressure pump as an infusion device, wherein the dual-drive high pressure pump comprises two linear motors driven by a single driver; the two linear motors drive a main pump head and an auxiliary pump head through a drive mechanism respectively; the main pump head is connected with the auxiliary pump head in series or in parallel; and the main pump head and the auxiliary pump head compensate each other to realize pulse-less infusion. The infusion method is efficient and stable, the main pump head and the auxiliary pump head can realize compensation for each other, and the auxiliary pump head can effectively compensate the reduced flow of the main pump head so as to realize constant high pressure or extra high pressure infusion. The dual-drive high pressure pump has a reasonable structure design, is convenient to maintain, and can realize the constant delivery of high pressure or extra high pressure mobile phases for a long term.

Description

technical field [0001] The invention belongs to the preparation liquid chromatography technology, and in particular relates to an infusion method and a double-drive high-pressure pump applied to a high-performance liquid chromatography system and an ultra-high pressure liquid chromatography system. Background technique [0002] The high-pressure infusion pump is an important unit instrument in the high-performance liquid chromatography system HPLC, and the ultra-high pressure pump is an indispensable infusion unit in the ultra-high pressure liquid chromatography system UPLC. The basic requirement of the ultra-high pressure pump is to maintain constant flow and constant pressure under the working pressure of 40 to 101MPa to ensure the accuracy and stability of the flow. For large-flow industrial liquid chromatography, it needs constant flow infusion of high-pressure and ultra-high-pressure infusion, and at the same time, the reciprocating operation of the infusion pump will c...

AI Technical Summary

Problems solved by technology

For large-flow industrial liquid chromatography, it needs constant flow infusion of high-pressure and ultra-high-pressure infusion, and at the same time, the reciprocating operation of the infusion pump will cause the pulsation of the mobile phase in the infusion pipeline, which will affect the stability of the liquid chromatography system. sex

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