Equipment for performing modified treatment on medium and large particle seeds by using cold plasma

Abstract

The invention relates to equipment for performing modified treatment on medium and large particle seeds by using cold plasma. The equipment comprises a charging barrel, a discharging barrel, and a vacuum cavity connected with the charging barrel and the discharging barrel, wherein an air exhaust is formed in the vacuum cavity and is connected with a mechanical pump; a discharge treatment device and a transfer device are arranged in the vacuum cavity; the discharge treatment device comprises two polar plates arranged in parallel and a discharge treatment radio-frequency power supply connected with the two polar plates; the distance between the two polar plates is 30-40mm; a preionization device is arranged in the vacuum cavity and comprises an electrode and a preionization radio-frequency power supply connected with the electrode; and the vacuum cavity is connected with an earth phase. According to the equipment disclosed by the invention, the preionization device is arranged in the vacuum cavity, so that the working power supply can instantaneously build up luminance, and the time needed by processing is accurately controlled; with the adoption of ionization dust removal, the working space is clean; and moreover, large-scale treatment of medium and large particle seeds with the particle size of more than 15mm can be realized under the condition that the mature process parameters are guaranteed.

Description

technical field [0001] The invention relates to a biological seed treatment device, in particular to a cold plasma treatment device for modifying medium and large particle seeds. Background technique [0002] Cold plasma seed treatment technology is a new technology for increasing agricultural production recently developed in the world. Active particles such as electrons, ions, excited molecules, atoms, free radicals produced by cold plasma glow discharge technology, as well as ultraviolet light and X-rays can activate the internal energy of crop seeds, so that the germination rate of crops can be improved, and drought resistance, diseases and vigorous growth, so as to achieve the purpose of increasing yield and improving product quality. The coupling effect of cold plasma and biomolecules makes biomacromolecules generate energy transitions, which is a physical biological phenomenon from the ground state to the excited state. [0003] However, the most critical thing to ca...

AI Technical Summary

Problems solved by technology

At present, cold plasma seed treatment equipment can only process small-grained seeds, such as rice seeds, wheat seeds, etc., and cannot modify larger-grained seeds above peanuts, especially seedlings (such as American red oak) and traditional Chinese medicine. medium and large grain seeds

Increasing the distance between the discharge plates is the only feasible way to treat medium and large particles in cold plasma, but this reduces the photon density of cold plasma

In the low vacuum state, the radiation in the vacuum ultraviolet region (VUV≤1800 A) in the glow discharge plays a decisive role in the modification of the seeds, so it is necessary to maintain a certain photon density, and the working vacuum must be reduced, for example, in When the distance between the two pole plates of the existing cold plasma seed treatment equipment is 7 mm, the working vacuum is 135 Pa. When the distance between the two pole plates increases, the working vacuum should increase accordingly, and the resulting glow is very difficult. , which affects the normal operation of the equipment, and the time required for the seed processing process is very short (≤18 seconds), if simply increasing the distance between the discharge plates cannot accurately control the processing time

Images