公开(公告)号：EP0227992A3

公开(公告)日：1987-12-09

申请号：EP86117181

申请日：1986-12-10

Applicant: Kopperschmidt-Mueller GmbH & Co KG

Inventor： Kuhn, Wolfgang ,  Buchholz, Norbert

IPC: B05B05/02

CPC classification number: B05B5/032 ,  B05B5/0531

公开(公告)号：EP0230723A3

公开(公告)日：1987-10-14

申请号：EP86308890

申请日：1986-11-14

Applicant: Nagasaka, Hideo

Inventor： Nagasaka, Hideo

IPC: B05B05/02 ,  B05B07/14

CPC classification number: B05B5/032

Abstract: It is described a novel powder charging apparatus, wherein a high voltage is applied between a couple of electrodes, consisting of a plasma electrode of required polarity and a plasma electrode of opposite polarity, to form plasma attip of each of electrodes, an eventually finely dispersed powder is made to pass only through an area wherein mainly ones of negative and positive ions derived of said plasma, that is, ions of required polarity exist, and thereafter the charged powder is discharged. In this apparatus, the adhesion of pow- derto each electrode is prevented and charging performance is maintained for a long time. It is also described an electrostatic powder coating apparatus comprising the above- described novel powder charging apparatus, which is excellent in performance for making thick coating, depositing efficiency and throwing power.

公开(公告)号：EP0222622A3

公开(公告)日：1987-10-07

申请号：EP86308818

申请日：1986-11-12

Applicant: PARKER HANNIFIN CORPORATION

Inventor： Burls, Gary E. ,  Parmentar, William F.

IPC: B05B05/02 ,  A01M07/00

CPC classification number: B05B5/043 ,  A01M7/0014 ,  B05B7/0075

Abstract: An inductor nozzle assembly for use with an air blast sprayer of the type having a tank holding waterborne pesticides, delivery lines connected to the tank and an air blast fan mounted in close proximity to the delivery lines, includes a spray nozzle mounted to the delivery lines which is disposed in the hollow interior of a conical-shaped housing mounted thereto. The housing is formed with an enlarged entrance opening, and a reduced diameter discharge opening which mounts an inductor ring charged with high electrical potential. A high velocity stream of air produced by the air blast fan is directed into the housing through its entrance opening where the air stream is accelerated by the conical shape of the housing toward its discharge opening. The waterborne pesticide supplied to the spray nozzle is ejected through the discharge orifice of the spray nozzle in a finely divided particle stream which is directed into the reduced diameter discharge opening of the housing charged inductively thereat by the inductor ring and then ejected from the discharge opening by the high velocity air stream produced by the air blast fan for deposition upon the trees of an orchard or other crops. The stream of air from the air blast fan which is accelerated within the housing forms a barrier between the atomized particle stream and the inductor ring to maintain the inductor ring dry and at its full electrical potential.

公开(公告)号：EP0160386A3

公开(公告)日：1986-11-26

申请号：EP85302063

申请日：1985-03-25

Applicant: NORDSON CORPORATION

Inventor： Hastings, Donald R. ,  Sharpless, John

IPC: B05B05/02 ,  H03K03/57 ,  H02M07/10 ,  H01B01/04

CPC classification number: B05B5/001 ,  B05B5/0407 ,  B05B5/053 ,  B05B5/0536 ,  H01B7/0054 ,  Y10T428/2918 ,  Y10T428/2933 ,  Y10T428/2964

Abstract: An electrostatic spray system including a spray device having a coating-charging electrode, a source of high voltage electrostatic potential, and a resistive path for safely transmitting high voltage between the electrode and the electrostatic supply. The resistive high voltage transmission path is composed of plural parallel-connected continuous silicon carbide fibers.

公开(公告)号：EP0157199A3

公开(公告)日：1986-10-22

申请号：EP85102477

申请日：1985-03-05

Applicant: WAGNER INTERNATIONAL AG

Inventor： Huber, Willi ,  Spirig, Eugen

IPC: B05B05/02

CPC classification number: B05B5/03 ,  B05B5/053 ,  B05B7/0815

Abstract: An electrostatic hand spraygun comprising a gun body, a pistol tube composed of insulating material, a handle, an insulation-clad high-voltage generator and a connection for the paint delivery is fashioned such that the gun is particularly small, lightweight and can be effortlessly held in the hand. The gun body preferably composed of aluminium is thereby an essentially cylindrical body which comprises the connection for the paint delivery in the region of its front face at the cylinder jacket. The pistol tube preferably formed of plastic is secured to the front face of the gun body in a fashion secured against twisting and comprises a clover-leaf-shaped cross-section having two through four "leaves". The high-voltage generator is secured in the back region of the gun body (and) to the underside thereof, whereby the cladding of the high-voltage generator is shaped handle-like, the high-voltage generator thus being (a) handle at the same time.

公开(公告)号：EP0163390A3

公开(公告)日：1986-03-26

申请号：EP85302348

申请日：1985-04-03

Applicant: IMPERIAL CHEMICAL INDUSTRIES PLC

Inventor： Norris, Alan James

IPC: B05B05/02

CPC classification number: B05B5/0255

Abstract: Electrostatic spraying apparatus wherein the liquid supply to the spray nozzle (20) is via a mechanical valve operated by an actuating member (12). Actuating member (12) is connected to a remote operating lever (3), which is preferably electrically conductive, via a connecting member (41) including an elastically extensible portion, eg a spring (39). Connecting member (41) is electrically conductive thus providing an electrical connection from lever (3) to the spray head.

公开(公告)号：EP0137732A3

公开(公告)日：1986-01-29

申请号：EP84306181

申请日：1984-09-10

Applicant: NORDSON CORPORATION

Inventor： Mulder, Douglas C.

IPC: B05B15/04 ,  B05B07/14 ,  B05B05/02

CPC classification number: B05B7/1472 ,  B05B5/08 ,  B05B5/1683 ,  B05B7/1454 ,  B05B7/1477 ,  B05B14/48 ,  Y02P70/36

Abstract: A powder feed and overspray recovery system for an electrostatic powder spray apparatus is disclosed. The feed and overspray recovery system includes a hopper, providing a fluidised bed of powder material. Powder from the fluidised bed is pulled by a pump through a draft tube located in the hopper and directed to one or more electrostatic spray guns. Overspray material is collected and directed by a second pump directly into the hopper without utilising a sieve to remove impurities from the overspray. The draft tube is preferably a two-piece construction with a main body having a fine fitter fitting into an extension tube. The extension tube includes a second coarser filter. Should the draft tube become clogged, it can be easily separated from the pump and replaced with a clean draft tube. The extension is separable from the main body to provide a means to easily clean the filters.

公开(公告)号：EP0127376A3

公开(公告)日：1985-11-27

申请号：EP84303281

申请日：1984-05-15

Applicant: PHARMINDEV LTD.

Inventor： Cosentino, Roberto Francesco ,  Bonapace, Franco

IPC: B05B05/02 ,  B05B05/08 ,  B05D01/04

CPC classification number: B05D1/04 ,  B05B5/081

Abstract: In the electrostatic application of a coating material on to a product to be coated, the product leaves a supply hopper (1) over a tube enlargement (5A) and falls freely in a chamber (2) in the form of a tubular curtain. The tubular curtain falls around a central, elongate, vertical corona discharge electrode (6) so that a high voltage electrostatic charge of one sign is applied to the falling curtain of the product. Coating material is sprayed on to the product by atomizers (A1 to A6) in the chamber (2). A high voltage electrostatic charge of opposite sign is applied to the coating material by way of the atomizers (A1 to A6).

公开(公告)号：EP0110753A3

公开(公告)日：1985-10-02

申请号：EP83402132

申请日：1983-11-02

Applicant: De Fusco Lupo, José

Inventor： De Fusco Lupo, José

IPC: B05B05/02 ,  B05B07/14

CPC classification number: B05B5/0531 ,  B05B5/032

公开(公告)号：EP0114064A3

公开(公告)日：1985-08-28

申请号：EP84100258

申请日：1984-01-12

Applicant: NORDSON CORPORATION

Inventor： McGhee, Edward C. ,  Beam, Harold D.

IPC: B05B05/02 ,  B05B01/04 ,  B05B01/26

CPC classification number: B05B5/03 ,  B05B7/067 ,  B05B7/0815

Abstract: An air atomizing nozzle assembly for electrostatic spray guns is disclosed. The nozzle assembly includes a fluid tip through which liquid coating material is emitted, an air cap having openings through which pressurized air passes to atomize the liquid coating material emitted from the nozzle and having a pair of opposed air horns through which pressurized air passes to shape the atomized coating material into a flat fan spray pattern, and a retaining ring for securing the air cap to the gun barrel and fluid tip. An annular diffuser is located within an internal chamber in the nozzle assembly which receives the pressurized fan-shaping air from a passageway passing through the barrel of the gun, redirects it, and equalizes the flow of the fan-shaping air to the opposed air horns. The present invention is particularly useful in applications having low liquid coating material flow rates on the order of less than about 3 fluid ounces of material per minute.