Non-equilibrium plasma generator and granular powder surface modification treatment system

Abstract

The invention discloses a non-equilibrium plasma generator and a granular powder surface modification treatment system. The non-equilibrium plasma generator comprises a cavity body, a shielding mesh and a high voltage electrode unit and a low voltage electrode which are both arranged in the cavity body, wherein the high voltage electrode unit is arranged on the lower surface of a high voltage electrode insulation cover plate, and comprises high voltage line electrodes in the distribution of a plurality of uniform arrays, and first through holes in the distribution of a plurality of uniform arrays are arranged on the high voltage electrode insulation cover plate; one end of each high voltage line electrode is fixed to one end of a high voltage electrode down-lead; the other end of the high voltage line electrode is fixed by a high voltage electrode fixing bolt, and the other end of the high voltage electrode down-lead is led out through the first through hole; all the high voltage electrode down-leads are connected and then used as the impulse high voltage input end of the non-equilibrium plasma generator. The non-equilibrium plasma generator and the granular powder surface modification treatment system adopt high voltage nanosecond repeat frequency impulse to directly drive non-equilibrium plasmas in the air under the atmospheric pressure, the discharge peak current density is larger, the efficiency of generating active particles is better, and the non equilibrium of plasmas is higher.

Description

technical field [0001] The invention belongs to the field of gas discharge and plasma application, and relates to a non-equilibrium plasma generating device and a granular powder surface modification treatment system. Background technique [0002] In recent years, atmospheric pressure air non-equilibrium plasma has received special attention due to its unique advantages and huge application prospects. Non-thermal equilibrium plasma is a partially ionized low-temperature plasma in which the electron and ion temperatures differ greatly. This kind of plasma contains a large number of active particles such as electrons, metastable ions, and free radicals, and has strong reactivity, so it has application prospects in many fields such as energy, materials, mechanical processing, and environmental protection. One of the most important research directions is the application exploration for surface modification of materials. Most of the non-equilibrium plasma used in the treatment ...

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Problems solved by technology

[0004] Aiming at the defects of the prior art, the present invention provides a non-equilibrium plasma generating device, the purpose of which is to solve the problems existing in the existing plasma discharge forms that it is difficult to obtain a large volume of plasma, the energy utilization efficiency is low, and the discharge peak current density is small. , Low efficiency of generating active particles, poor plasma imbalance, large use restrictions, high application cost and other technical problems

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