Electric precipitation experimental demonstrational instrument and experimental demonstration method thereof

Abstract

The invention relates to an electric precipitation experimental demonstrational instrument and an experimental demonstration method thereof, the instrument comprises a box body part, an electric system and a dedusting system; the box body part comprises a bottom opened insulating box body, a horizontal metal shaft which is arranged on the front part of the box body across wall plates on two sides of the box body, rollers arranged on two ends of the shaft and a handle arranged on the box body; the electric system adopts 220V, 50Hz AC power supply and comprises a boosting transformer, a rectifier and a silicon steel sheet which are arranged on the rear part of the box body and a switch and a connecting plug which are arranged on the box body; the dedusting system comprises a cylindric metal anode sleeved on the shaft, two rows of hackle-shaped metal cathodes which are fixed to copper sheets and oppositely arranged on front and rear sides of the anode, a wire which is used for connecting two copper sheets, a sponge wiper which is arranged above the metal anode and dust collecting grooves which are arranged on two sides of the metal anode; the rectified voltage output anode is connected with the metal shaft through an electric brush, and a cathode is connected with two copper sheets. According to the invention, the operation is convenient, teaching demonstration can be directly performed, and the instrument helps students to deepen perceptual knowledge for point discharge phenomenon.

Description

technical field [0001] The invention belongs to the technical field of a teaching experiment demonstration device and a demonstration method, and in particular relates to an electrostatic dust removal experiment demonstration instrument and a demonstration method thereof. Background technique [0002] Under the action of a strong electric field, where the surface of the object has a large curvature (such as the top of a sharp, small object), the equipotential surface is dense, and the electric field intensity increases sharply, causing the air near it to be ionized to generate gas discharge. This phenomenon is called corona discharge. . Tip discharge is a kind of corona discharge, which refers to the phenomenon of gas discharge caused by ionization of air near the tip. When the voltage is high enough and the discharge end is small and sharp, the tip discharge phenomenon is more obvious. When the electric field strength is similar to the air breakdown electric field, the ai...

AI Technical Summary

Problems solved by technology

When teaching content involving cutting-edge discharge principles and cutting-edge discharge phenomena, it is often impossible to carry out teaching demonstrations due to the lack of equipment that can assist demonstrations, resulting in poor teaching effects

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