Cold plasma treatment equipment for medium and large particle seed modification

Abstract

The invention relates to a cold plasma modification treatment device for medium and large particle seeds, which includes an upper material tank, a lower material tank and a vacuum chamber connecting the upper material tank and the lower material tank, and the vacuum chamber is provided with a suction port. The air suction port is connected with a mechanical pump, and a discharge processing device and a transmission device are installed in the vacuum chamber. The discharge processing device includes two parallel plates, and a discharge processing radio frequency power supply connected to the two plates. The distance between them is 30-40mm, and a pre-ionization device is also arranged in the vacuum chamber. The pre-ionization device includes an electrode, a pre-ionization radio frequency power supply connected to the electrode, and the vacuum chamber is connected to the ground. The present invention is equipped with a pre-ionization device in the vacuum cavity, so that the working power can be ignited in an instant, and the precise control of the time required for processing is realized; the ionization dust removal is used to make the working space cleaner; under the condition of ensuring mature process parameters, it can Realize large-scale treatment of medium and large-sized seeds with seed particles larger than 15 mm.

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

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