Electrostatic spraying equipment and rotary cup thereof

Abstract

The invention provides electrostatic spraying equipment and a rotary cup thereof. The rotary cup is used for atomizing coating conveyed into the rotary cup from the cup bottom and then spraying the coating out from a cup opening, and the area of the opening of the rotary cup is gradually increased in the direction from the cup bottom to the cup opening. The inner side wall surface of the rotary cup comprises multiple sections of inwards-concaved curved surfaces. The inwards-concaved curved surfaces are sequentially connected in the direction from the cup bottom to the cup opening. Through the rotary cup, the coating entering the rotary cup can be fully atomized after being impacted for multiple times, the atomizing effect of the coating is effectively improved, and the lacquering rate is increased, specifically, the lacquering rate can be increased by 15% or above according to practical verification and comparison. Meanwhile, the diameter and the angle of the bottom of the rotary cup can be smaller through the design of the multiple sections of inwards-concaved curved surfaces of the inner side wall of the rotary cup, and the defect that the coating is not atomized through the rotary cup and directly rebounds, and consequently, the atomizing effect of part of the coating is poor is avoided.

Description

technical field [0001] The invention relates to the technical field of electrostatic spraying, in particular to an electrostatic spraying device and a rotary cup thereof. Background technique [0002] The commonly used material for containers is steel. In order to avoid surface rust, paint is often sprayed on the surface of the container, and it is better to spray water-based paint on the surface of the container. [0003] In the prior art, the traditional airless spraying technology is generally used in the construction of container water-based paint, and the paint rate is only 50% to 55%, the spraying effect is not good, and the waste of paint is more. [0004] Another better method is to use electrostatic spraying, so that the paint is transported into a high-speed rotating cup, and the paint is atomized under the centrifugal force of the cup, and then the paint is evenly sprayed on the surface of the container by the atomizing wind . The shape of the inner wall of the ...

AI Technical Summary

Problems solved by technology

The shape of the inner wall of the existing rotary cup is generally a slope or a conical concave surface. In some cases, the defect of poor atomization of the paint may occur, and the atomization effect of the rotary cup on the paint still needs to be improved.

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