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Ultrasonic cavitation pipetting device for food inspection

A liquid pipetting device and food inspection technology, which is applied to measuring devices, sampling devices, laboratory utensils, etc., can solve problems such as easy generation of air bubbles and inaccurate pipetting, and achieve the effects of preventing pollution and being easy to use

Pending Publication Date: 2020-11-17
公卫爱
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, one of the objectives of the present invention is to provide an ultrasonic cavitation pipetting device for food inspection, which solves the problem of air bubbles and imprecise pipetting when pipetting liquid with high viscosity during the pipetting process of food inspection in the prior art. technical issues

Method used

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  • Ultrasonic cavitation pipetting device for food inspection
  • Ultrasonic cavitation pipetting device for food inspection
  • Ultrasonic cavitation pipetting device for food inspection

Examples

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Embodiment 1

[0042] Embodiment 1: A kind of ultrasonic cavitation pipetting device for food inspection, such as Figure 1-4 As shown, it includes the rough movement system, the fine movement system connected with the rough movement system and the control system;

[0043] The rough movement system includes a rough movement pipe 1, a rough movement piston 2 arranged in the coarse movement pipe 1, a rough movement connecting rod 3 connected with the rough movement piston 2, a fixing piece, and a rough movement suction head 4 connected with the rough movement pipe 1 below , ultrasonic generator 5, air pump 6, air hole 7 and the valve 8 that is arranged on the air hole 7, described up and down is image 3 Above and below the air pump 6 is provided with a casing 27; the coarse pipette 1 is made of a transparent and pressure-resistant material, and the coarse pipette can be made of tempered glass. When pipetting, the amount of liquid volume inside the coarse pipette 1 is increased. The coarse pi...

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Abstract

The invention discloses an ultrasonic cavitation pipetting device for food inspection. The ultrasonic cavitation pipetting device comprises a coarse pipetting system, a fine pipetting system connectedwith the coarse pipetting system and a control system; the coarse pipetting system comprises a coarse pipetting pipe, a coarse pipetting piston arranged in the coarse pipetting pipe, a coarse pipetting connecting rod connected with the coarse pipetting piston, a fixing piece, a coarse pipetting suction head connected with the lower portion of the coarse pipetting pipe, an ultrasonic generator, anair pump, an air hole and a valve arranged on the air hole. The fine pipetting system comprises a pipetting subsystem, a gear set connected with the pipetting subsystem, a graduated tube and a graduated rod arranged in the graduated tube; the control system is used for controlling opening and closing of the valve, the one-way valve I, the one-way valve II, the air pump and the ultrasonic generator; the technical problems that in the food inspection pipetting process in the prior art, bubbles are likely to be generated when liquid with high viscosity is transferred, and pipetting is inaccurateare solved.

Description

technical field [0001] The invention relates to the field of food testing, in particular to an ultrasonic cavitation pipetting device for food testing. Background technique [0002] Ultrasonic is a kind of energy. When the ultrasonic energy is high enough, the phenomenon of "ultrasonic cavitation" will occur, that is, the tiny bubbles (cavitation nuclei) existing in the liquid vibrate, grow and continuously gather the sound field under the action of the ultrasonic field. Energy, when the energy reaches a certain threshold, the cavitation bubble collapses and closes sharply. The lifetime of cavitation bubbles is about 0.1 μs. The ultrasonic cavitation effect can also tear the inside of the liquid, causing the gas originally dissolved in the liquid to quickly generate bubbles, and the bubbles grow rapidly, collapse, and overflow the liquid. During the cavitation process, a large number of bubbles will be generated inside the liquid. At this time, if the external pressure is ...

Claims

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Application Information

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IPC IPC(8): G01N1/14B01L3/02
CPCG01N1/14B01L3/0224G01N2001/1418
Inventor 公卫爱
Owner 公卫爱
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