Spray nozzle for electrostatic spraying of paint products and apparatus for spraying paint products comprising such 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 improving resistance, easy operation and improving safety
Active Publication Date: 2018-04-20
サムクレムリン
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- Abstract
- Description
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- 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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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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The invention relates to a spray nozzle for electrostatic spraying of paint products, the spray nozzle comprising a needle (3) forming a moving valve plate of a valve (63) for controlling the spraying of paint products and positioned in the spraying The nozzle is in the recess (4) of the barrel. The recess (4) defines a guide surface (S4) for guiding the axial translation of the needle (3) along the longitudinal axis (Y4) of the recess (4). The needle includes a front end portion (3a), a rear portion (3c) and a central portion (3b) between the front end portion (3a) and the rear portion (3c), the front end portion having a base adapted to abut (33) Shaped so as to block the flow of the coating product, the rear part interacts with a device for controlling the translation of the needle (3), while the height contained in the spray nozzle (1) The voltage unit is capable of applying high voltage to the front end portion (3a) of the needle (3). At least one first protruding portion (8) is provided on the central portion (3b) of the needle within the recess (4), the first protruding portion being able to increase the electrical 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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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