Sterilizing and pesticide-residue-reducing low-temperature plasma generator

A low-temperature plasma and generator technology, applied in the direction of plasma, electrical components, etc., can solve the problems of reducing the service life of plasma equipment, small double-electrode plasma processing capacity, and poor plasma penetration, and achieve stable work. , long service life, uniform discharge effect

Active Publication Date: 2018-03-13
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The plasma penetration is not strong, the existence time is short, and it can only act on the surface or shallow layer of the object. The plasma is introduced into the liquid by air blowing, etc., and the treatment effect is not good; the plasma generator electrode is discharged under high voltage. It is easy to be oxidized, which reduces the service life of plasma equipment; due to the different distance between the two electrode plates of plasma discharge, it is easy to cause partial discharge or tip discharge, which reduces the treatment effect; the usual two-electrode plasma treatment capacity is small

Method used

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  • Sterilizing and pesticide-residue-reducing low-temperature plasma generator
  • Sterilizing and pesticide-residue-reducing low-temperature plasma generator
  • Sterilizing and pesticide-residue-reducing low-temperature plasma generator

Examples

Experimental program
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Embodiment 1

[0022] Such as Figure 1 to Figure 3 A low-temperature plasma generating device for sterilizing and reducing pesticide residues shown includes four parts, an inner tube electrode, a concentric outer tube electrode, a discharge chamber processing device, and a high-voltage power supply. The inner tube electrode is composed of an inner electrode lead wire 4, an inner The electrode tube 5 and the inner electrode glass tube 6 are composed; the concentric outer tube electrode is composed of 2-10 layers of concentric glass tubes with electrodes embedded inside. Here, the first layer of outer tube electrodes is described, and the first layer of outer tube electrodes consists of The lead wire 8, the outer electrode cylinder 9, and the outer electrode glass cylinder 10;

[0023] The inner electrode glass tube 6 is a closed glass tube with a tube height of 100 mm, an outer diameter of 10 mm, and a tube wall thickness of 0.5 mm. It is vacuumed or filled with mercury vapor or argon. The i...

Embodiment 2

[0030] Similar to Example 1, the concentric outer tube electrode is composed of 10 layers of concentric glass tubes with electrodes embedded in them. The inner electrode glass tubes are 200 mm high, 20 mm in outer diameter, and 1 mm in wall thickness. Mercury vapor is filled inside. The inner electrode tubes are 5 Made of copper, the concentric outer tube electrode is composed of 2-10 layers of concentric glass cylinders with electrodes embedded inside. The distance between the electrode cylinders is 10mm, the wall thickness of the glass tube is 1mm, the distance between the two glass tubes is 10mm, and mercury vapor is filled in the middle. , the distance between the outer circle of the inner electrode glass tube 6 and the inner circle of the outer electrode glass tube 10 is 10 mm. The liquid separator ring 7 is arranged vertically at intervals of 40mm in the inner electrode glass tube 6, the high-voltage power supply 11 has a frequency of 10,000 Hz, a voltage of 10,000 volts,...

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Abstract

The invention relates to a sterilizing and pesticide-residue-reducing low-temperature plasma generator, which comprises four parts, namely, an inner tube electrode, a concentric outer tube electrode,a discharge cavity processing device and a high-voltage power supply. The inner tube electrode is composed of an inner electrode lead 4, an inner electrode cylinder 5 and an inner electrode glass tube6. The concentric outer tube electrode is composed of 2-10 layers of concentric glass tubes with electrodes therein. The first layer of outer tube electrode is composed of an outer electrode lead 8,an outer electrode cylinder 9 and an outer electrode glass tube 10, and the other layers are the same. The discharge cavity processing device is composed of an upper cover plate 1, a liquid inlet 2, an air inlet 3 and a liquid separation ring 7. By the invention, liquid to be treated are sterilized and pesticide residues are reduced directly by a low-temperature plasma discharge device. The sterilizing and pesticide-residue-reducing low-temperature plasma generator of the invention has the advantages of large discharge area, stable operation, high efficiency, long service life and the like.

Description

technical field [0001] The invention relates to a low-temperature plasma generator for sterilizing and reducing pesticide residues. Background technique [0002] Plasma is the fourth form of matter other than liquid, gas, and solid. It is electrically neutral and consists of electrons, ions, and unionized neutral particles. Plasma is divided into high-temperature plasma and low-temperature plasma, wherein low-temperature plasma can be generated at room temperature. Low-temperature plasma is generated by high-voltage discharge. During the discharge process, free radicals such as H·,·OH, O3, H2O2 are mainly generated, and local high temperature, shock waves and ultraviolet light are also formed. [0003] Low-temperature plasma technology has been widely used in the degradation of pesticide residues and sterilization. In the 1990s, the United States began to use low-temperature plasma to treat food, and it has commercial applications. Low-temperature plasma has the character...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H1/24
CPCH05H1/24
Inventor 张俊周锦云
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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