摘要:
A self-cleaning belt conveyor (1) for objects to be treated with liquid substances in spray painting or dyeing plants (3) - of the type having a belt (1) with continuous surface, extending between a head drum (5) and a tail drum (17) and carrying said objects 2 across the area where the liquid substance (4) is applied - comprises a belt (1) consisting of a thin sheet of non-adherent plastic material, means (6-7) to remove and recover the liquid substance (4) deposited on the belt (1) around the objects (2) being treated, as well as belt cleaning means (9-13), both such means being positioned downstream of the spray painting area (3). The width of the belt area (l₁) onto which the liquid substance is applied is smaller than the working width (l₂) of said means, and this last width is in turn smaller than the width of the belt (l).
摘要:
A method and apparatus for dyeing a substrate 10 using an array of spray generators. In a preferred embodiment, each spray generator is comprised of a gas port 140 from which an intermittent jet of pressurized gas is directed onto the substrate to be dyed. Positioned along the path of the gas jet is a nozzle 132 from which continuously flows a liquid dye. When dyeing is desired, i.e., in response to pattern data, the gas jet is rapidly cycled on and off, thereby atomizing the dye emerging from the nozzle and establishing discrete bursts of spray which meter a controlled quantity of dye onto the substrate. When the gas jet is interrupted, the nozzle projects an continuous stream of liquid dye which does not contact the substrate and is recirculated into a through 162
摘要:
A portable powder spray apparatus incorporating means for powder recovery is disclosed. The powder spray apparatus has a base unit with a front wall divided into a lower section and an upper section offset rearwardly towards the centre of the base unit relative to the lower section and horizontal supports extending between the two sections. A booth is removably mounted on the horizontal supports to form a powder coating chamber. Spray gun means form a coating upon a moving substrate which passes through the powder coating chamber by way of openings formed in the booth. Oversprayed powder is collcted in a powder collection chamber located in the base unit from which it is returned to the spray gun means. Oversprayed powder which does not fall into the powder collection chamber is collected in a filter system through which it is drawn by a blower means which creates a negative pressure in the booth.
摘要:
A method and apparatus for spraying a solid particulate powder onto the interior surface of tubular articles (3) by intermittently pumping the powder from a fluidized bed of powder through a powder supply line containing an intermittently operated venturi pump and air amplifier, as well as a pair of constantly operated air diffusers and an electrostatic charging apparatus. A powder collection shroud (6, 23) adjacent at least one open end of the tubular article (3) has a carefully regulated vacuum applied thereto in order to collect oversprayed powders.
摘要:
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Rückgewinnen von überschüssigem Pulver aus Pulverbeschichtungskabinen (10). Das überschüssige Pulver wird aus den Kabinen mittels Ventilatoren über Zyklone (14) abgesaugt, wobei zwischen der jeweiligen Kabine (10) und den Zyklonen (14) eine Beschleunigungsstrecke (16) vorgesehen ist, in der das Pulver beschleunigt wird, damit es mit einer ausreichend großen Einströmgeschwindigkeit in die Zyklone (14) einströmt, wodurch der Abscheidewirkungsgrad gesteigert wird. Der Beschleunigungsstrecke kann ein Sieb (24) vorgeschaltet sein, um das Pulver abzusieben und Fremdkörper und Schmutzpartikel schon frühzeitig abzutrennen. Die Zyklone (14) können wechselseitig betrieben werden, so daß ein Zyklon (14) entleert wird, während der andere weiterläuft und umgekehrt, ohne daß der Betrieb der Pulverbeschichtungskabine (10) unterbrochen werden muß. Am Boden (34) der Kabine ist ein engmaschiges Gewebe (36) geneigt eingebaut, dem von unten Luft zugeführt wird, wodurch Pulver, das in der Kabine (10) absinkt und auf den Boden fällt, aufgelockert und am Fußende der Kabine ausgetragen wird. Um Feinststäube aus der Absauglauft zu entfernen, ist dem Ventilator ein Bandfilter nachgeschaltet, von welchem das auf ihm abgesetzte Pulver mittels eines Staubsaugers abgesaugt wird.
摘要:
A powder recovery apparatus comprising a cyclone body to separate powder particles from a suspended form and a powder sieve device to separate out reusable powder, wherein the powder sieve device is positioned to the side of the cyclone body. An intermediary powder storage chamber is provided beneath the cyclone body, and powder is fed from this chamber to the powder sieve device by a transfer pump.
摘要:
Paint recovery plant which may be utilized in association with conventional furniture painting plants, comprising spraying devices (4) connected by means of pipes (5) and one or more circulation pumps (7) to reservoirs containing the paints, as well as comprising a lower tank (10). Recovery plant comprising a separated reservoir (11) containing additional paint solvents and connected, by means of pipes (12) and one or more re-circulation pumps (13), to a tray (14) which is disposed in an inclined position on the respective painting plant, in such a manner as to permit the circulation of the solvents on the surface of the same tray (14) and the contact of the solvents with the paint which is wasted, during the painting operation, so allowing such a paint to be recovered.
摘要:
Changement de couleur dans un processus de revêtement d'objets par poudrage. Les objets (12) reçoivent successivement une sous-couche de poudre dans une cabine (20) et une couche d'une couleur choisie dans la cabine (24), la poudre de la sous-couche étant récupérée dans la cabine (24); l'invention consiste à préchauffer les objets (12), par exemple par la mise en oeuvre de moyens de séchage (18), avant leur introduction dans la cabine (20) où est appliquée la sous-couche.
摘要:
L'invention concerne un dispositif de lavage d'un gaz pollué dans lequel ce dernier traverse au moins une nappe d'un liquide de lavage. Il comporte des parois de ruissellement (7) qui délimitent entre elles une ouverture (8), une paroi transversale (12), située au dessous de l'ouverture (8) et un canal de ruissellement d'axe vertical, entourant la paroi transversale (12), délimité par deux parois de confinement (10) fixées sous les parois de ruissellement (7) de part et d'autre de l'ouverture (8). A l'intérieur du canal de ruissellement, sous la paroi transversale (12), sont disposées successivement des parois (15) délimitant une ouverture (16) et une seconde paroi transversale (17) située au dessous de l'ouverture (16).