Method for making horizontal air outlet directions of two sides of ion bar consistent in static elimination performance under same vertical distance

Abstract

The invention discloses a method for making horizontal air outlet directions of two sides of an ion bar consistent in static elimination performance under the same vertical distance, and belongs to the field of static elimination. An air channel in an electrode holder is composed of an air inlet section, a mixing section, a contraction section, a throat opening and an expansion section which are connected in sequence. The tail end of the expansion section forms an electrode holder airway outlet. The air channel outlet is of a horn-shaped opening structure. An air channel of the electrode holder adopts an airflow accelerating structure mode of shrinking and expanding in sequence, so that the volume of the air channel is reduced, and the effect of accelerating the airflow velocity at an outlet of the air channel is achieved. Due to the fact that the injection angle of the outlet of the air channel is increased, a wider electricity elimination range can be obtained. Through changing an air channel structure of the electrode holder, the output state of the ionized airflow of each discharge electrode assembly is improved, so that the output air quantity of each discharge electrode assembly in the length direction of the ion rod is uniform, the airflow motion states of each discharge electrode assembly in the horizontal direction of the two sides of the ion rod are consistent in thesame vertical test distance, and a more balanced and faster electrostatic elimination effect can be achieved.

Description

technical field [0001] The invention belongs to the field of static electricity elimination, and in particular relates to a method for making the electricity dissipation performance of a rod-shaped electricity elimination device consistent. Background technique [0002] The ion bar is a static elimination device that neutralizes the static charge on the surface of the charged object by sending positive and negative ions to the charged object. There are basically two ways to transport ions. One is to transport ions to the surface of the charged object under the action of the comprehensive electric field force of the high-voltage electric field generated by the discharge electrode and the charge field formed by the opposite charge on the surface of the charged object. The biggest defect is that the transport distance of ions is relatively short, and when it exceeds a distance of 15 cm, its transport capacity will be significantly weakened; the second is to use external compres...

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Problems solved by technology

[0008] 2. If figure 2 As shown in , when the total compressed air input pressure is constant, the output airflow state at the same discharge electrode assembly is disordered. In the figure, the amount of positive and negative ions received by the plate charge tester P4 in front of the rod and the plate charge tester P5 behind the rod are not equal or similar), resulting in inconsistency in the power dissipation time;

[0009] 3. The consumption of air flow is large, and the pressure drop of air flow is too large, resulting in the decrease of air velocity and slow power dissipation time

The problem easily caused by the square straight airway is that the cross-section of the discharge electrode is circular, while the cross-section of the airway is square, the airflow flows out from the four right angles of the square hole, the airflow state is disordered, and the airflow distribution is uneven, resulting in some The airflow in azimuth is very weak, and the airflow in some azimuths is strong, resulting in a large deviation in the power dissipation performance of the corresponding azimuth. For example, the azimuth with weak airflow has a slow power dissipation speed, and the direction with strong airflow has a fast power dissipation speed, and the balance voltage fluctuates greatly.

For the circular straight-through airway, the airflow cannot be accelerated, resulting in the inability to increase the power dissipation speed; although the circular straight-through airway has relatively uniform airflow distribution in all directions, due to the limitation of its straight-through structure, it cannot obtain a wider Dissipation range

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