High-precision microfluidic valve

Abstract

The invention discloses a high-precision microfluidic valve. The high-precision microfluidic valve comprises a mounting pipe, a tapered pipe is fixed on the outer wall of the top of the mounting pipethrough bolts, the same mounting frame is fixed on the inner walls of the two sides of the mounting pipe through bolts, a control block is fixed on the outer wall of the bottom of the mounting frame through bolts, a circular groove is formed in the outer wall of the top of the control block, the same sliding plate is slidably connected to the inner walls of the two sides of the circular groove, aconnecting rod is fixed to the outer wall of the top of the sliding plate through bolts, a sealing plug with a conical structure is fixed on the outer wall of the top of the connecting rod through bolts, a mounting groove is formed in the inner wall of the bottom of the circular groove, the inner wall of the mounting groove is connected with a sealing pipe in a sleeve mode, and the inner walls ofthe two sides of the sealing pipe are slidably connected with the same magnet. According to the high-precision microfluidic valve, the flow of the valve is controlled by energizing and de-energizing an electromagnet on the sealing pipe in the control block, and the amount of elongation of the connecting rod is controlled through the current in the electromagnet to control the opening and closing amount of the sealing plug accordingly.

Description

technical field [0001] The invention relates to the field of microfluidic technology, in particular to a high-precision microfluidic valve. Background technique [0002] Microfluidics refers to the science and technology involved in the use of micropipes (tens to hundreds of microns in size) to process or manipulate tiny fluids (nanoliters to attic liters in volume), and is a discipline involving chemistry, fluid physics , microelectronics, new materials, emerging interdisciplinary disciplines of biology and biomedical engineering. Because of the characteristics of miniaturization and integration, microfluidic devices are usually called microfluidic chips, also known as lab-on-a-chip and micro-total analysis systems. The early concept of microfluidics can be traced back to the gas chromatograph produced on silicon wafers by photolithography in the 1870s, and then developed into microfluidic capillary electrophoresis and microreactors. One of the important features of micro...

AI Technical Summary

Problems solved by technology

[0003] Existing microfluidic valves have relatively single functions and cannot accurately control the flow of the valve, resulting in relatively large limitations in the use of the valve

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