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A hydraulic control system with ultra-high precision and improved reaction conversion rate

A technology of reaction conversion rate and precision, applied in the field of precision instruments, can solve the problems of changing the inherent state of the solution, unable to effectively control the droplet size, etc., to achieve the effect of improving the reaction conversion rate

Active Publication Date: 2022-04-29
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether heating the solution or adding surfactants will change the inherent state of the solution, and even introduce other unwanted substances, which will cause many adverse effects on experiments and production.
In experiments and actual production applications, it is always impossible to effectively control the size of droplets

Method used

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  • A hydraulic control system with ultra-high precision and improved reaction conversion rate
  • A hydraulic control system with ultra-high precision and improved reaction conversion rate
  • A hydraulic control system with ultra-high precision and improved reaction conversion rate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] according to figure 2 A dripping nozzle was produced, wherein the dripping nozzle was a four-layer composite structure in the shape of a single leaf hyperboloid, the diameter of the upper end was 2.6 mm, and the diameter of the lower end was 0.5 mm. The innermost layer is made of stainless steel, the second layer is made of polytetrafluoroethylene, the third layer is made of stainless steel, and the fourth layer is made of polytetrafluoroethylene.

[0046] The electric control device is powered by a storage battery and includes an electrical signal generator based on the NE555 circuit. It can output electrical pulse signals or DC signals with a frequency of 0-10MHz and a magnitude of -30-60V. The output end of the pulse signal is connected to the innermost layer (first conductive layer) of the droplet nozzle, and the zero line end is connected to the third layer (second conductive layer) of the droplet nozzle, so as to build a pulse electric field in the droplet nozzl...

Embodiment 2

[0050] according to figure 2 A dripping nozzle was produced, wherein the dripping nozzle was a four-layer composite structure with a single-leaf hyperboloid, the diameter of the upper end was 3.5 mm, and the diameter of the lower end was 0.6 mm. The innermost layer is made of magnesium-aluminum alloy, the second layer is made of polyimide, the third layer is made of magnesium-aluminum alloy, and the fourth layer is made of polyimide.

[0051] The electronic control device is powered by a rechargeable battery and includes a pulse signal generator made of two TTL integrated circuits (74LS00 and 74LS221). The electric control module can output electric pulse signals with a frequency of 10-20MHz and a magnitude of -10-100V. The output end of the pulse signal is connected to the innermost layer (first conductive layer) of the droplet nozzle, and the zero line end is connected to the third layer (second conductive layer) of the droplet nozzle, so as to build a pulse electric field...

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Abstract

The invention discloses a liquid control system with ultra-high precision and capable of improving the reaction conversion rate, comprising: a drip nozzle, an electric control device and a liquid control device; wherein the liquid drop nozzle is arranged at the bottom of the liquid control device, and The liquid control device is connected; and the electric control device is connected with the dripping nozzle. In this system, based on the electrocapillary effect in the electrochemical system, by applying an electric field of a specific size and frequency to the liquid at the drop nozzle, the surface tension of the internal liquid can be effectively regulated, and then the volume of the droplet can be precisely controlled. The size can be precisely controlled at the micron level or even sub-micron level; it has broad prospects in the fields of microelectronics and precision chemical industry.

Description

technical field [0001] The invention relates to the field of precision instruments, in particular to a liquid control system with ultra-high precision and capable of improving reaction conversion rate. Background technique [0002] In many fields such as microelectronics, fine chemical industry, and military industry, there is a wide demand for liquid pipetting and dropping devices. In the early days, people usually used droppers and pipettes to pipette liquids, and the precision was very low and uncontrollable. The single pipetting precision limit was about 0.1-1.0mL. [0003] In recent years, a variety of dripping devices, such as micro-injectors, pipette guns, and electromagnetic pipetting devices, can more accurately pipette liquids with a volume of tens or hundreds of microliters or more. However, it is worth noting that since the droplet size is always limited by the surface tension of the liquid, it is difficult for these devices to achieve a single controllable drop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01L3/02
CPCB01L3/0268B01L3/0293B01L2200/061B01L2400/0415
Inventor 钟向丽吴祎玮王金斌胡焕东龙杰梅许诗瑶
Owner XIANGTAN UNIV
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