Automatic and rapid electrostatic spraying on-off control system and control method thereof

Abstract

The invention relates to an automatic and rapid electrostatic spraying on-off control system and a control method thereof, and belongs to the technical field of electrostatic spraying. The automatic and rapid electrostatic spraying on-off control system comprises a mobile platform as well as a spraying substrate (1), a charge generation and injection device (2), a voltage dividing and circuit protection resistance (3), a liquid storage and conveying device (4), an electrostatic spraying nozzle (5), a high-voltage triode (6), a high-voltage triode driving board (7), a divider resistance (8), an on-off mode control circuit board (9), a supervisory controller (10) and a mobile platform controller (11) which are arranged on the platform. According to the system, through control of an on-off state of the high-voltage triode, a voltage loaded to the electrostatic spraying nozzle in a control circuit is controlled, so that an on-off state of an electrostatic spraying system is rapidly controlled. The electrostatic spraying system includes four different spraying states so as to meet requirements for different spraying application. The control system disclosed by the invention has practicality and spraying controllability, and has very high utilization value in the industrial production.

Description

technical field [0001] The invention relates to an automatic control electrostatic spray fast on-off system and a control method thereof, belonging to the technical field of electrostatic spray. Background technique [0002] Electrostatic spraying is essentially a technology that uses electrostatic force to disperse liquids to produce tiny droplets with static electricity. Usually, in this process, these tiny droplets are sprayed out like water columns, which is called a jet. The single-jet electrostatic spraying mode produces a single jet consisting of a line of nearly identical electrostatic droplets aligned in a straight line. The physical principle of single-jet electrostatic spraying has been explained by the leakage medium model proposed by G.Taylor and J.R.Melcher in the 1960s, and can be found in Annual Review of Fluid Mechanics, 1969, 1, 111-146 Electrohydrodynamics: A Review of the Role of Interfacial Shear Stresses and other documents. It uses the electrostatic f...

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Problems solved by technology

[0003] However, the current single-jet electrostatic spraying still lacks an automatic and fast on-off control method, and it is urgent to make progress in printing equipment.

And the current problem is that it is impossible to obtain a specific on-off effect simply and quickly, so that a specific figure containing on-off can be drawn. By controlling the liquid flow or directly adjusting the charge input, it is impossible to perform on-off in a short time. It is impossible to adjust the on-off state with high precision and repeatability according to the preset on-off state on a large scale.

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