Spray nozzle for electrostatic spraying of a coating product and facility for spraying a coating product including such a spray nozzle

An electrostatic spraying and product technology, applied in the direction of electrostatic spraying device, spraying device, spraying device, etc., to achieve the effect of easy operation, improved safety, and improved resistance

Active Publication Date: 2016-03-02
サムクレムリン
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention more specifically aims to solve these disadvantages by proposing a spray nozzle for electrostatic spraying of paint products that is easy to handle and improves safety

Method used

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  • Spray nozzle for electrostatic spraying of a coating product and facility for spraying a coating product including such a spray nozzle
  • Spray nozzle for electrostatic spraying of a coating product and facility for spraying a coating product including such a spray nozzle
  • Spray nozzle for electrostatic spraying of a coating product and facility for spraying a coating product including such a spray nozzle

Examples

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Embodiment Construction

[0028] figure 1 The apparatus 100 shown in FIG. 2 enables electrostatic painting of objects (not shown). The apparatus 100 comprises a spray gun 1 for electrostatic spraying of a paint product, the spray gun 1 being supplied with paint product from a paint product reservoir 20 via a hose 21 .

[0029] The spray gun 1 is also connected to a source of charge air 30 by a hose 31 . Air from the source 30 is used to spray the paint product by driving it from the spray gun 1 towards the object to be painted.

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Abstract

The invention relates to a spray nozzle for electrostatic spraying of a coating product which includes a needle (3) which forms a mobile shutter of a valve (63) for controlling the spraying of the coating product and which is positioned in a recess (4) of a barrel of the spray nozzle. The recess (4) defines a surface (S4) for guiding the axial translation of the needle (3) along a longitudinal axis (Y4) of the recess (4). The needle includes a front end (3a) having a shape suitable for abutting against a seat (33) in order to obstruct a duct (2) for the flow of the coating product, a rear portion (3c) which interacts with means for controlling the translation of the needle (3) and a central portion (3b) comprised between the front end (3a) and the rear portion (3c), while a high-voltage unit included in the spray nozzle (1) is capable of applying a high-voltage to the front end (3a) of the needle (3). At least one first raised portion (8) is provided on the central portion (3b) of the needle, inside the recess (4), which is capable of increasing the electric creepage distance along the central portion (3b).

Description

technical field [0001] The present invention relates to a spray nozzle for electrostatic spraying of paint products, and a device for spraying paint products comprising such a spray nozzle. Background technique [0002] A spray nozzle for electrostatically spraying a coated product is capable of electrostatically charging the coated product and providing a good transfer rate of the coated product onto the support to be covered. When the paint product is designed to be charged, one end of the spray needle is placed under a high voltage that can range from 10 to 200 kilovolts (kV) by using a high voltage unit included in the spray nozzle. [0003] A recurring problem with spray nozzles for the electrostatic spraying of paint products is that the length, volume and overall weight of the spray nozzle are limited in order to improve its operability. The selection of these parameters is determined by the fact that when one end of the spray nozzle needle is placed at high voltage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B5/053B05B1/30
CPCB05B1/3046B05B5/0533B05B5/0255B05B5/053B05B1/32
Inventor 帕特里克·巴吕米歇尔·第-乔治亚吉尔斯·高易索特菲利浦·普罗韦耐兹
Owner サムクレムリン
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