Conductive hairbrush charge injection device and method and application

Abstract

The invention provides a conductive hairbrush charge injection device and method and application of the device, wherein a conductive hairbrush and a metal body for fixing the conductive hairbrush areconnected to a high-voltage power supply. According to the conductive hairbrush charge injection device, under the conditions of the same voltage and the same discharge distance, more charges are stably injected into a material, discharge is uniform in space, sparking is not likely to happen after long-time use, wire breakage is avoided, and the conductive hairbrush charge injection device can beapplied to dissolved spray cloth electret or electrostatic paper suction, in-mold labeling and air purification.

Description

technical field [0001] The invention relates to the field of utilizing charge injection, in particular to the technical field of charge injection into a solution-blown cloth filter material to improve particle blocking efficiency of the filter material. Background technique [0002] In order to prevent the inhalation of viruses and particles into the body, masks made of solvent-blown cloth filter materials are widely used. However, when the solution-sprayed cloth filter material blocks nano-scale viruses that are much smaller than PM2.5, the method of electrostatic electret is compared with the method of increasing the thickness of the solution-sprayed cloth, and its filtration efficiency is improved, the air resistance is reduced, and the economic cost is reduced. Advantages, the usual method is to use corona discharge to treat the solution-blown cloth filter material, that is, to apply high voltage to a conductive needle or thin wire, and when the air near the needle tip o...

AI Technical Summary

Problems solved by technology

[0003] The needle tip corona discharge has the following disadvantages: 1. The needle tip discharge is uneven, resulting in uneven filtration performance of the filter material

2. After the needle tip is used for a period of time, some tips will be ablated due to long-term discharge and ignition, and the needle tip will become blunt and shortened, thereby weakening the electric field at the tip. Reduced efficiency affects the uniformity and stability of filtration efficiency

3. The needle tip is also easy to hang on the melt-blown filament and dust when it is in use, which reduces the electric field at the tip and reduces the efficiency. When the melt-blown cloth passes through these needles, the charge injection is also reduced. There is a possibility of scratching the staff's hands

[0004] Thin wire corona discharge has the following disadvantages: thin wires are easy to break, especially when sparking occurs, if the power of the high-voltage power supply used is too large, the thin wires are easily blown, and the following consequences may occur after the wire is broken: (1) The broken wire connected to the high-voltage power supply will fall off. If it falls on a grounded metal material such as a metal roller or a metal plate, it will cause a short circuit of the high-voltage power supply, and the thin wire will arc and burn the melt-sprayed cloth. It may damage the high-voltage power supply. (2) If the power supply continues to supply power, it will continue to spark, pull the arc, burn out the melt-sprayed cloth, and even cut all the rolled-up melt-sprayed cloth due to electric sparks; (3) The broken wire falls on the insulating material , although it is not ignited, the charge can no longer be injected into the solvent-blown cloth, and because it is not easy to find, when the solvent-blown cloth continues to run, it will cause a large section of cloth or even the entire roll of cloth to be unable to electret, resulting in a decrease in the filtration efficiency of this part of the solvent-blown cloth; (4) If the staff does not pay attention after the disconnection, it may also cause electric shock accidents to the staff

Images