EP0636420B2 - Dispositif pour transporter de la poudre, en particulier de la poudre de revêtement - Google Patents

Dispositif pour transporter de la poudre, en particulier de la poudre de revêtement Download PDF

Info

Publication number
EP0636420B2
EP0636420B2 EP94108909A EP94108909A EP0636420B2 EP 0636420 B2 EP0636420 B2 EP 0636420B2 EP 94108909 A EP94108909 A EP 94108909A EP 94108909 A EP94108909 A EP 94108909A EP 0636420 B2 EP0636420 B2 EP 0636420B2
Authority
EP
European Patent Office
Prior art keywords
air
powder
conveyor
rate
ref
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94108909A
Other languages
German (de)
English (en)
Other versions
EP0636420B1 (fr
EP0636420A3 (fr
EP0636420A2 (fr
Inventor
Felix Mauchle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gema Switzerland GmbH
Original Assignee
Gema Switzerland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6493732&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0636420(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Gema Switzerland GmbH filed Critical Gema Switzerland GmbH
Publication of EP0636420A2 publication Critical patent/EP0636420A2/fr
Publication of EP0636420A3 publication Critical patent/EP0636420A3/fr
Publication of EP0636420B1 publication Critical patent/EP0636420B1/fr
Application granted granted Critical
Publication of EP0636420B2 publication Critical patent/EP0636420B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1683—Arrangements for supplying liquids or other fluent material specially adapted for particulate materials

Definitions

  • the invention relates to a powder conveying device, especially for coating powder, according to the Preamble of claim 1.
  • Injectors working according to the Venturi tube principle as jet pumps for the pneumatic conveying of Coating powders are from DE-PS 1 266 685 (U.S. Patent 3,504,945).
  • Spraying devices in Form of spray guns for electrostatic spray coating of objects with coating powder are known from US Pat. No. 4,196,465.
  • From the DE-OS 39 26 624 A1 it is known an injector conveying air flow and supply an additional air flow to an injector. The conveying air flow is used to generate a Vacuum, which sucks powder into the injector, and to transport the sucked powder to a Spraying device with which the powder is directed towards you coating object is sprayed.
  • the additional air serves to adjust the strength of the negative pressure or to maintain a certain amount of total air, if the conveying air volume is below one certain value drops. So that the total air volume can be kept at a desired value the conveying air and the additional air are separated in this way regulated that the total air volume regardless of the proportions of conveying air and additional air has the desired constant value.
  • the air is to be conveyed of the powder required.
  • the total airflow must have a certain minimum speed, because at a speed of the powder-air mixture pulsations of less than 10-15 m / sec Powder-air mixture flow occur in the fluid lines. However, there is too much or too quickly flowing air undesirable because it is the cloud of sprayed powder and undesirably affects the coating quality.
  • a too strong air flow can from the to Blow away powder coating surface.
  • the Powder flow rate spray Powder quantity per unit of time
  • a practical value for the powder rate is 300 g / min. ever according to the required coating thickness on the coating object and dependent on others Criteria such as type of powder or surface shape of the object to be coated it is desirable to increase or decrease the powder delivery rate humiliate.
  • the delivery air rate and the additional air rate can be set so that the desired Powder delivery rate is generated, however, the total air delivery rate consisting of conveying air and additional air constant remains or assumes a desired value.
  • the necessary settings of the conveying air rate and the additional air rate are in DE-OS 39 26 624 A1 made by hand.
  • the delivery air rates and Additional air rates are set on pressure regulators. On certain pressure results in the pipe system a certain amount of subsidized plant Air per unit time. Due to many unknown pressure drops and changing flow cross sections in the The "pressure control” is not a powder conveying device very accurate. More precise would be a "volume control", through which the "volume of funded per unit of time Conveying air "and the" volume of per unit time conveyed additional air "is regulated. Volume regulator and sensors for determining the air volume conveyed are known, but not to promote powder.
  • the object of the invention is to be achieved to create a device in which with less Time and less manpower required setting of the conveying air quantity per unit of time and the additional air volume per time unit possible is when a desired powder flow per unit of time for a desired total air flow is set or changed per unit of time.
  • the invention has the following advantages in particular: After saving a calibration diagram for a certain powder systems, especially electrostatic Powder spray coating system, can desired amount of powder delivered per unit of time easily changed and at this The change is completely automatic and is retained the required total air volume required new amount of funded per unit of time Conveying air and additional air delivered per unit of time.
  • Several diagram lines can be saved in the diagram be, of which each diagram line is one certain total air volume delivered per unit of time represents which of a diagram axis with the powder quantities on another diagram axis for Conveying air volumes for a certain amount of powder required amount of conveying air is "mirrored” can. This "mirroring" means “reading” or 'calculate' by the computer.
  • the powder conveying device according to the invention for coating powder shown in FIG. 1 contains an injector 2, in which, according to the principle of a Venturi tube, a conveying air flow of a conveying air line 4 generates a negative pressure in a negative pressure area 6, through which powder 8 is sucked in from a powder container 10 and then from the conveying air flow is further transported through a powder-air line 12 to an electrostatic powder spraying device 16, which charges the powder electrostatically and sprays along an arrow 18 onto an object 20 to be coated.
  • the spray device 16 can contain a high voltage generator for charging the powder or can be connected to an external high voltage source.
  • the drawings show an embodiment in which the high voltage generator is integrated in the spray device 16 and the desired high voltage can be set via an electrical line 22 and a computer 24.
  • the high voltage for electrostatically charging the powder can be in the range between 0 and 140,000 volts and can be set as desired.
  • An additional air flow 26 can be used to add an additional air flow to the conveying air flow in the vacuum region 6.
  • the additional air flow of the additional air line 26 can be introduced into the conveying air flow at a location located downstream of the vacuum region 6, either still within the injector 2 or at a location located downstream of it in the powder-air line 12.
  • the conveying air passes from a compressed air source 30 via a conveying air regulator 32 into the conveying air line 4.
  • the additional air arrives from the compressed air source 30 via an additional air regulator 34 into the additional air line 26.
  • the two regulators 32 and 34 can be compressed air regulators, but are volume flow regulators in the preferred embodiment shown which regulate the volume of air flowing through them per unit of time.
  • the conveying air volume flow controller 32 receives a conveying air volume setpoint signal FV-Soll from the computer 24 via an electric conveying air volume setpoint line 36 and from an conveying air volume sensor 38 in the conveying air line 4 via an electric conveying air volume actual value line 40 an electric conveying air volume Actual value signal FV-actual.
  • the conveying air volume flow controller 32 regulates the conveying gas volume flowing through it per unit time as a function of this setpoint signal and this actual value signal of the lines 36 and 40.
  • the additional air volume flow controller 34 receives an electrical additional air volume set value signal ZV-Soll from the computer 24 via an electrical additional air volume set value line 42 and an electrical additional air volume actual value sensor 44 in the additional air line 26 via an electrical additional air volume actual value line 46 Additional air volume actual value signal ZV-Ist.
  • the additional air volume flow controller 34 regulates the additional air quantity flowing through it per time unit as a function of this setpoint signal ZV-Soll of the line 42 and this actual value signal ZV-Ist of the line 46. Since air has a different volume depending on the pressure and temperature, the two volume pressure regulators 32 and 34 are calibrated so that they convey a so-called standard cubic meter "Nm 3 " per hour at an atmospheric pressure and a temperature of 0 ° C.
  • a plurality of predetermined powder delivery rates (delivered powder quantity per unit time "m", for example in g / min) on a diagram axis and a plurality of delivery air rates (delivered delivery air per unit time "on a second diagram axis running at right angles to it).
  • FV " for example in Nm 3 / h
  • GV total air conveyed per unit of time consisting of conveying air and possibly additional air added
  • the corresponding conveying air volume value FV1 or FV2 is obtained for the desired total air volume value GV1 by going from the value m1 or m2 parallel to the conveying air volume axis FV to the total air volume straight line GV1, and then parallel to the powder mass axis m to the conveying air volume axis FV.
  • the conveying air volume values are plotted, for example, in Nm 3 / h on the conveying air volume axis FV.
  • Each powder spraying device 16 of a powder coating system can have conveying air lines, additional air lines and powder-air lines of different lengths and with different cross sections.
  • a calibration chart corresponding to calibration chart 50 may be stored in computer 24.
  • a line can be stored in the calibration diagram 50 for several total air volume values, via which a line for a specific powder mass value such as m1 or m2 can be determined for a corresponding conveying air volume value FV1 or FV2.
  • a straight line for a total air volume value GV1 and a dashed line for another total air volume value GV2 are stored in diagram 50.
  • a conveying air volume FV1 ' is required for a desired powder mass per unit time m1.
  • the computer 24 calculates the additional air volume value ZV from the total air volume GV2 and the calculated conveying air volume FV1 ′, which is not contained in the diagram 50, but is given by the computer 24 as an additional air volume setpoint signal ZV-Soll on the electrical line 42 to the additional air volume flow controller 34 ,
  • the conveying air volume value FV for example FV1 'or FV1 or FV2, which can be taken from the diagram, is given by the computer 24 to the conveying air volume flow controller 32 as an electric conveying air volume setpoint signal FV-Soll on the electrical line 36.
  • the desired powder mass target value "m target" can be variably entered into the computer 24 at an input 52.
  • the total fragrance volume setpoint "GV-Soll" can be variably entered into the computer 24 at an input 54.
  • a powder mass sensor 56 which can be accommodated in the injector 2 or can be arranged downstream of it on the powder-air line 12, generates an electrical signal as a function of the powder mass "m” conveyed per unit of time by the total air flow (conveying air plus any additional air added) Powder mass actual value signal m-lst and transmits this on an electrical line 58 to a powder mass actual value input 60 of the computer 24.
  • the computer 24 calculates from the powder mass target value signal m target at its input 52 and the powder mass Actual value signal m-actual is a powder mass-target-actual comparison signal at its input 60 and uses this as powder mass signal m1, m2 etc.
  • the powder mass value "m" selected for the calculation on the powder mass diagram axis m is only the same size as the target powder mass value m setpoint entered at input 52 if the actual powder mass value m-actual of the powder mass sensor 56 is equal to the powder mass target value m-target is.
  • the computer usually contains at least one processor and a data memory.
  • a quantity funded per unit of time can also referred to as the "rate”. Therefore, below also the expressions powder mass rate, conveying air rate and additional air rate used.
  • the computer 24 is also provided with an input 62 for setting a high voltage setpoint HS setpoint provided, depending on which of the computers 24 via the electrical line 22 of the spray device 16 a signal for setting the High voltage sends. This allows the entire powder delivery device away from computer 24 from the spray device 16 and removed from the volume flow controllers 32 and 34 are controlled and regulated.
  • auxiliary air pressure regulator 134 instead of the additional air volume flow controller 34 in the additional air path between the compressed air source 30 and the additional air line 26 arranged and the still existing Auxiliary air volume controller 34 generates one to the electrical one Auxiliary air volume setpoint signal ZV setpoint from Fig. 1 corresponding electrical additional air pressure setpoint signal ZP target, which via an electrical Setpoint signal line 142 to the additional air pressure regulator 134 is supplied.
  • the air pressure regulator 132 receives from one Compressed air sensor 138 in the conveying air line 4 via a electrical delivery air pressure actual value line 140 electrical Air pressure actual value signals FP-actual, compared these actual value signals FP-actual with the electrical delivery air pressure setpoint signals FP target of electrical Conveying air pressure setpoint signal line 136 of the conveying air volume flow controller 32 and regulates depending from the comparison result the conveying air pressure with which the conveying air from the compressed air source 30 via the Conveying air line 4 is fed to the injector 2.
  • the Delivery air volume flow controller 32 receives from the delivery air volume flow sensor 38 in the conveying air line 4 via the electrical conveying air volume actual value line 40 electrical conveying air volume actual value signals FV actual as in the embodiment shown in Fig. 1. This is 3 is a "volume flow control".
  • the auxiliary air pressure regulator 134 receives from one Compressed air sensor 144 in the additional air line 26 via an electrical additional air pressure actual value line 146 electrical additional air actual value signals ZP-actual, compared with the additional air setpoint signals ZP-Soll der Auxiliary air pressure setpoint line 142 and generated in An additional air pressure depending on the comparison result, with which the additional air from the compressed air source 30 of the auxiliary air line 26 is supplied.
  • the Additional air volume flow controller 34 receives from that Auxiliary air volume flow sensor 44 in the auxiliary air line 26 via the electrical additional air volume actual value line 46 electrical additional air volume actual value signals ZV is as in the embodiment shown in Fig. 1. As a result, the additional air control is also in FIG. 3 a "volume flow control".
  • the conveying air volume flow controller 32 and the Additional air volume flow controller 34 can accordingly Fig. 1 outside of the computer 24 as a separate one devices connected to him or trained accordingly Fig. 3 integrated in the computer and partially or entirely through the software and / or hardware of the computer 24 may be formed.
  • Fig. 3 are as Part of the computer 24 that is stored in it Diagram 50 and schematically by a square 124 the hardware and software of the computer 24 as well the dependency of diagram 50, the conveying air volume flow controller 32 and the additional air volume flow controller 34 shown from each other.
  • the term "computer” here means an electrical one Control device, which in addition to Basic components processor, memory, input and output units also other electronic or electrical May contain elements.
  • a system for electrostatic powder coating usually has multiple spray devices 16. Each spraying device requires the one in FIGS 3 elements shown. However, the computer can 24 be trained so that a single computer 24 perform the functions for all spray devices 16 can.
  • Fig. 3 shows a central electronic control system 200 for multiple spray devices 16, the each have their own computer 24.
  • the computer are in one with the central control system 200 bidirectional data exchange, which is schematic in Fig. 3 is represented by a double arrow 202.
  • the Computer 24 receives from central control system 200 in each case the powder mass setpoint m-set Total air volume setpoint GV set, and if desired, also the high voltage setpoint HS setpoint, which is the desired high voltage value, with which the spray device 16 electrostatically the powder should charge.
  • Another modified embodiment can consist of the computer 24 in the central Control system is included.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Paints Or Removers (AREA)

Claims (11)

  1. Dispositif de transport de poudre, notamment de poudre de revêtement, présentant les particularités suivantes :
       un injecteur (2), dans lequel un courant d'air de transport d'une conduite (4) d'air de transport génère une dépression selon le principe d'un tube Venturi, par laquelle de la poudre est aspirée d'un réservoir (10) de poudre et transportée ensuite par le courant d'air de transport dans une conduite (12) de poudre et d'air ; un courant d'air d'appoint d'une conduite (26) d'air d'appoint, lequel peut être ajouté au courant d'air de transport dans la zone de dépression ou à un emplacement situé en aval de cette dernière ; un régulateur (32 ; 32, 132) d'air de transport ; un régulateur (34 ; 34, 134) d'air d'appoint ; un ordinateur (24) ;
       caractérisé en ce que,
    en tant que diagramme d'étalonnage (50), il est mémorisé dans l'ordinateur (24) une pluralité de débits prédéfinis de poudre, à savoir de masse de poudre (m) transportée par unité de temps, sous la forme d'un premier axe de diagramme, et une pluralité de débits d'air de transport, à savoir d'air de transport (FV) transporté par unité de temps, sous la forme d'un deuxième axe de diagramme, les débits d'air de transport (FV) étant nécessaires pour un certain débit total d'air (GV) constitué d'air de transport (FV) et d'air d'appoint (ZV) ajouté le cas échéant pour engendrer les débits de transport de poudre (m), et ayant été déterminés par des essais ;
    en ce que l'ordinateur (24) comporte une entrée (52) de valeur de consigne de débits de poudre pour l'entrée d'une valeur de consigne choisie de débits de poudre (m-Soll), et une entrée (54) de valeur de consigne de débits d'air total pour l'entrée d'une valeur prédéterminée de consigne de débits d'air total ;
    en ce que l'ordinateur (24) contient un logiciel et/ou un matériel programmés en fonction du diagramme (50) qui, pour une valeur de consigne (m-Soll) entrée de débits de poudre, calculent à partir du diagramme (50) en fonction du débit total d'air prédéterminé (GV) le débit d'air de transport (FV) nécessaire à cet effet, et le débit d'air d'appoint nécessaire à cet effet (air d'appoint ZV transporté par unité de temps), et qui, en fonction du résultat du calcul et en fonction d'une valeur réelle (m-Ist) de courant de masse de poudre, qui est produite par un capteur de valeur réelle de masse de poudre (56), génèrent une valeur de consigne (FV-Soll ; FV-Soll et FP-Soll) de débit d'air de transport, et une valeur de consigne (ZV-Soll ; ZV-Soll et ZP-Soll) de débit d'air d'appoint ;
    l'ordinateur (24) calculant, à partir de la valeur de consigne de débit de poudre (m-Soll) appliquée à son entrée (52) et de la valeur réelle de courant de masse de poudre (m-Ist), un signal de comparaison de valeur de consigne/valeur réelle de la masse de poudre, et utilisant celui-ci en tant que signal de masse de poudre (m1, m2, etc.) sur l'axe de diagramme concernant la masse de poudre, pour le calcul de la valeur de consigne du débit d'air de transport, nécessaire pour un débit total d'air (GV1, GV2, etc.) prédéfini, et ensuite pour le calcul de la valeur de consigne correspondante du débit d'air d'appoint, la valeur de la masse de poudre (m1, m2, etc.), sélectionnée, sur l'axe de diagramme concernant la masse de poudre, pour le calcul n'étant de même grandeur que la valeur de consigne de débit de poudre (m-Soll), fournie à l'entrée (52), que si la valeur réelle de masse de poudre (m-Ist) est égale à la valeur de consigne de débit de poudre (m-Soll) ;
    en ce que le régulateur (32 ; 32, 132) d'air de transport régule l'air de transport en fonction de la valeur de consigne (FV-Soll ; FP-Soll) du débit d'air de transport, et en fonction d'une valeur réelle (FV-Ist ; FV-Ist, FP-Ist) du débit d'air de transport qui est produite par un détecteur (38 ; 38, 138) de valeur réelle du débit d'air de transport ;
    en ce que le régulateur (34 ; 34, 134) d'air d'appoint régule le débit d'air d'appoint en fonction de la valeur de consigne (ZV-Soll ; ZV-Soll, ZP-Soll) du débit d'air d'appoint, et en fonction d'une valeur réelle de débit d'air d'appoint (ZV-Ist ; ZV-Ist, ZP-Ist), qui est produite par un détecteur (44 ; 44, 144) de valeur réelle de débit d'air d'appoint.
  2. Dispositif de transport de poudre selon la revendication 1,
       caractérisé en ce que le débit souhaité d'air total est mémorisé dans le diagramme (50) de l'ordinateur (24) en tant que ligne droite ou courbe (GV), par l'intermédiaire de laquelle le débit d'air de transport (FV) nécessaire à ce débit total d'air pré-défini pour chaque débit de transport de poudre (m) mémorisé peut être prélevé du diagramme.
  3. Dispositif de transport de poudre selon la revendication 2,
       caractérisé en ce que des lignes de diagramme sont mémorisées dans le diagramme (50) de l'ordinateur (24) pour plusieurs débits d'air total (GV1, GV2) prédéfinis, par l'intermédiaire desquelles l'ordinateur calcule pour un débit choisi de transport de poudre (par exemple m1 ou m2), et pour un débit total choisi d'air (par exemple GV1 ou GV2), le débit d'air de transport (par exemple FV1 ou FV2) nécessaire à cet effet, calcule ensuite le débit d'air d'appoint éventuellement nécessaire par la différence entre le débit total d'air et le débit d'air de transport, et génère en fonction de ces calculs une valeur de consigne (FV-Soll ; FV-Soll, FP-Soll) de débit d'air de transport, et une valeur de consigne (ZV-Soll ; ZV-Soll, ZP-Soll) de débit d'air d'appoint, et en ce que l'ordinateur (24) comporte une entrée (52) pour le réglage d'une valeur de consigne (m-Soll) souhaitée de la masse de poudre, et une entrée (54) pour le réglage d'une valeur de consigne (GV-Soll) souhaitée de débit total d'air.
  4. Dispositif de transport de poudre selon l'une quelconque des revendications précédentes,
       caractérisé en ce que le régulateur (32) d'air de transport est un régulateur de débit volumétrique, qui régule le volume d'air de transport transporté par unité de temps.
  5. Dispositif de transport de poudre selon la revendication 4,
       caractérisé en ce qu'il est prévu un régulateur de pression (132) d'air de transport qui reçoit des valeurs de consigne électriques de pression d'air de transport, lesquelles sont produites par le régulateur (32) de débit volumétrique d'air de transport de telle sorte qu'elles correspondent aux valeurs de consigne de débit volumique d'air de transport qu'il génère, et en ce que le régulateur de pression (132) d'air de transport régule la pression à laquelle l'air de transport est amené vers l'injecteur (2) en fonction de ces valeurs de consigne (FP-Soll) de la pression de l'air de transport.
  6. Dispositif de transport de poudre selon la revendication 5,
       caractérisé en ce que le régulateur (32) de débit volumétrique d'air de transport est formé par le matériel ou le logiciel de l'ordinateur (24).
  7. Dispositif de transport de poudre selon l'une quelconque des revendications précédentes,
       caractérisé en ce que le régulateur d'air d'appoint est un régulateur (34) de débit volumétrique d'air d'appoint, qui régule le volume d'air d'appoint transporté par unité de temps.
  8. Dispositif de transport de poudre selon la revendication 7,
       caractérisé en ce qu'il est prévu un régulateur de pression (134) d'air d'appoint auquel sont transmises des valeurs de consigne électriques (ZP-Soll) de pression d'air d'appoint, lesquelles sont produites par le régulateur (34) de débit volumétrique d'air d'appoint de telle sorte qu'elles correspondent aux valeurs de consigne de débit volumique d'air d'appoint qu'il produit, et en ce que le régulateur de pression (134) d'air d'appoint régule la pression à laquelle l'air d'appoint est ajouté au courant de poudre et d'air dans l'injecteur, ou en aval de ce dernier, en fonction de ces valeurs de consigne de la pression de l'air d'appoint.
  9. Dispositif de transport de poudre selon la revendication 8,
       caractérisé en ce que le régulateur (34) de débit volumétrique d'air d'appoint est formé par le matériel ou le logiciel de l'ordinateur (24).
  10. Dispositif de transport de poudre selon l'une quelconque des revendications précédentes,
       caractérisé en ce que l'ordinateur (24) est raccordé à une unité de commande centrale (200), de laquelle il reçoit les valeurs de consigne pour la poudre et pour le débit total d'air constitué d'air de transport, et le cas échéant d'air d'appoint ajouté.
  11. Dispositif de transport de poudre selon l'une quelconque des revendications précédentes,
       caractérisé en ce qu'il est prévu un détecteur (56) de valeur réelle de masse de poudre, qui génère un signal électrique (m-Ist) de valeur réelle de la masse de poudre en fonction du débit de masse de poudre présent dans le courant de poudre et d'air, en ce qu'un signal correspondant au signal (m-Ist) de valeur réelle de masse de poudre est transmis à l'ordinateur, en ce que l'ordinateur (24) est programmé de telle sorte que pour le calcul du volume d'air de transport (FV1, FV2) sur l'axe de diagramme des débits d'air de transport (FV), il utilise à partir du signal (m-Ist) de valeur réelle de masse de poudre, et de la valeur de consigne (m-Soll) de la masse de poudre, un signal de comparaison de valeur de consigne/réelle de la masse de poudre en tant que signal (m1, m2) de masse de poudre sur l'axe (m) du diagramme des débits de poudre.
EP94108909A 1993-07-26 1994-06-10 Dispositif pour transporter de la poudre, en particulier de la poudre de revêtement Expired - Lifetime EP0636420B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4325044 1993-07-26
DE4325044A DE4325044C2 (de) 1993-07-26 1993-07-26 Pulverfördervorrichtung, insbesondere für Beschichtungspulver

Publications (4)

Publication Number Publication Date
EP0636420A2 EP0636420A2 (fr) 1995-02-01
EP0636420A3 EP0636420A3 (fr) 1995-09-13
EP0636420B1 EP0636420B1 (fr) 1998-10-28
EP0636420B2 true EP0636420B2 (fr) 2002-01-02

Family

ID=6493732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94108909A Expired - Lifetime EP0636420B2 (fr) 1993-07-26 1994-06-10 Dispositif pour transporter de la poudre, en particulier de la poudre de revêtement

Country Status (4)

Country Link
US (1) US5702209A (fr)
EP (1) EP0636420B2 (fr)
DE (2) DE4325044C2 (fr)
ES (1) ES2123077T5 (fr)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59610361D1 (de) * 1995-09-18 2003-05-28 Elpatronic Ag Bergdietikon Verfahren zur Förderung eines pulverförmigen Gutes mittels eines Injectors
DE19548607A1 (de) * 1995-12-23 1997-06-26 Gema Volstatic Ag Pulver-Sprühbeschichtungsvorrichtung
DE19601335C2 (de) * 1996-01-16 1998-03-12 Wolfgang Peltzer Vorrichtung zum Einblasen von teilchenförmigen Dämmstoffen
DE19606214B4 (de) * 1996-02-20 2006-06-01 Abb Research Ltd. Verfahren und Einrichtung zur Steuerung des Austritts eines fluidisierten Feststoffs aus einem Behälter
DE19608432A1 (de) * 1996-03-05 1997-09-18 Medicoat Ag Vorrichtung zur Regelung des dosierten Zuführens von Pulver zu einer Pulververarbeitungseinheit
DE19613967A1 (de) * 1996-04-09 1997-10-16 Gema Volstatic Ag Vorrichtung zur Sprühbeschichtung
DE19738141C2 (de) * 1997-09-01 2003-06-05 Wagner Int Steuersystem einer Beschichtungsanlage mit einer LON-Busstruktur
DE19748821A1 (de) * 1997-11-05 1999-05-06 Itw Gema Ag Pulver-Sprühbeschichtungsvorrichtung
US6073818A (en) * 1998-06-19 2000-06-13 Genzyme Transgenics Corporation Apparatus for controlled delivery of powdered solid materials
EP0979682A1 (fr) * 1998-08-13 2000-02-16 B a r m a g AG Doseur de poudres avec disque de dosage
DE19838269A1 (de) * 1998-08-22 2000-02-24 Itw Gema Ag Pulverbeschichtungsvorrichtung
DE19838279A1 (de) 1998-08-22 2000-02-24 Itw Gema Ag Pulver-Sprühbeschichtungsvorrichtung
DE19838276A1 (de) * 1998-08-22 2000-02-24 Itw Gema Ag Pulver-Sprühbeschichtungsvorrichtung
DE10111383B4 (de) * 2001-03-09 2006-02-09 Wagner International Ag Verfahren zur Förderung von Beschichtungspulver zu einer Beschichtungseinheit und zugehörige Pulverfördervorrichtung
DE10111891A1 (de) * 2001-03-13 2002-11-28 Itw Gema Ag Pulversprüheinrichtung für Beschichtungspulver
FR2824283B1 (fr) 2001-05-03 2004-10-29 Eisenmann France Sarl Procede de regulation du debit de poudre transportee par un flux d'air, et dispositif pour sa mise en oeuvre
BR0215688A (pt) 2002-05-10 2005-02-01 Eisenmann France Sarl Processo de regulagem da vazão de pó em um dispositivo de fornecimento de uma vazão de pó transportado por um fluxo de ar e dispositivo de injeção e de transporte de pó
DE10237747A1 (de) * 2002-08-17 2004-02-26 Abb Patent Gmbh Robotersystem zum Beschichten von Werkstücken
DE10324076A1 (de) * 2003-05-27 2004-12-30 Dürr Systems GmbH Fördereinrichtung für eine Lackieranlage
DE102004052949A1 (de) * 2004-10-29 2006-05-04 Nordson Corp., Westlake Verfahren und Vorrichtung zur Überwachung von Strömungsverhältnissen in einem Leitungsstrang
US7731456B2 (en) * 2005-10-07 2010-06-08 Nordson Corporation Dense phase pump with open loop control
DE102007046738A1 (de) * 2007-09-28 2009-04-02 Itw Gema Gmbh Pulversprühbeschichtungsverfahren und -vorrichtung
DE102007046806A1 (de) 2007-09-29 2009-04-02 Itw Gema Gmbh Pulversprühbeschichtungsvorrichtung und Pulverfördervorrichtung hierfür
DE102007048520A1 (de) 2007-10-10 2009-04-16 Itw Gema Gmbh Sprühbeschichtungspulver-Fördervorrichtung und Pulversprühbeschichtungsvorrichtung
DE102007049219A1 (de) * 2007-10-13 2009-04-16 Itw Gema Gmbh Pulverfördervorrichtung für Pulversprühbeschichtungsvorrichtungen
DE102007049170A1 (de) 2007-10-13 2009-04-16 Itw Gema Gmbh Pulversprühbeschichtungsvorrichtung oder Pulverfördervorrichtung einer Pulversprühbeschichtungsvorrichtung
DE102007049169A1 (de) 2007-10-13 2009-04-16 Itw Gema Gmbh Pulversprühbeschichtungs-Steuergerät und seine Kombination mit einer Pulverfördervorrichtung oder mit einer Pulversprühbeschichtungsvorrichtung
CN105142799B (zh) * 2013-04-03 2017-12-05 格玛瑞士有限公司 粉末密相泵和相应的操作方法
WO2015166374A1 (fr) 2014-04-28 2015-11-05 Marangoni S.P.A. Unité de distribution pour un matériau particulaire
EP3100968A1 (fr) * 2015-06-01 2016-12-07 Xerex Ab Dispositif et système de transport pneumatique d'un matériau
EP3685924B1 (fr) * 2019-01-25 2021-12-22 Wagner International Ag Dispositif de transport de poudre de revêtement et installation de revêtement par poudre dotée d'un dispositif de transport de poudre
DE102021202325A1 (de) 2021-03-10 2022-09-15 Putzmeister Engineering Gmbh Verfahren zum Betreiben einer Bau- und/oder Dickstoffpumpe zum Fördern von Bau- und/oder Dickstoff und Bau- und/oder Dickstoffpumpe zum Fördern von Bau- und/oder Dickstoff
CN113110626B (zh) * 2021-04-28 2022-06-24 北京航空航天大学 矩形透明可调文氏管

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3423094C2 (fr) † 1984-06-22 1990-10-04 J. Wagner Gmbh, 7990 Friedrichshafen, De
EP0412289A2 (fr) † 1989-08-11 1991-02-13 ITW Gema AG Dispositif de pulvérisation électrostatique
US5167714A (en) † 1989-09-29 1992-12-01 Nordson Corporation Powder coating system with configurable controller and dew point detection

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3625404A (en) * 1969-06-02 1971-12-07 Ransburg Electro Coating Corp Apparatus and method for dispensing particulate material
DE2522179B2 (de) * 1975-05-17 1980-06-26 Knorr-Bremse Gmbh, 8000 Muenchen Rechnergestützte Prüfeinrichtung, insbesondere fur pneumatische Bremssteuerventile von Schienenfahrzeugen
DE2849295C2 (de) * 1978-11-14 1985-04-04 Ransburg-Gema AG, St.Gallen Sprühbeschichtungsvorrichtung zum Beschichten von Gegenständen
DE2849269C2 (de) * 1978-11-14 1980-11-27 Gema Ag, Apparatebau, St. Gallen (Schweiz) Verfahren zum Pulversprühen und pneumatische Pulversprüheinrichtung
GB2087264A (en) * 1980-11-19 1982-05-26 Graco Inc A speed control apparatus for operating a centrifugal atomiser
DE3134180C2 (de) * 1981-08-28 1983-11-24 Waeschle Maschinenfabrik Gmbh, 7980 Ravensburg Verfahren zur Dosierung von pneumatisch transportiertem Schüttgut
DE3201105C1 (de) * 1982-01-15 1983-10-13 Waeschle Maschinenfabrik Gmbh, 7980 Ravensburg Verfahren und Anlage zur Versorgung mehrerer Verbraucher mit dosierten Teilmengen eines Schuettgutes
US4614300A (en) * 1982-04-19 1986-09-30 E. I. Du Pont De Nemours And Company Computerized spray machine
US4483646A (en) * 1982-05-07 1984-11-20 Denka Consultant & Engineering Co., Ltd. Apparatus for distributing powdered particles
DE3219813C2 (de) * 1982-05-26 1984-04-05 Denka Consultant & Engineering Co., Ltd., Tokyo Vorrichtung zum Fördern pulverförmiger Stoffe von einem unter Druck stehenden Behälter zu einer Abgabestelle
DE3441938A1 (de) * 1984-11-16 1986-05-22 Preh, Industrieausrüstungen GmbH, 8740 Bad Neustadt Einrichtung zum vergleich von zu messenden wertpaaren mit einer sollkennlinie
US4607987A (en) * 1984-11-26 1986-08-26 Kice Metal Products Co., Inc. Multiple lift pneumatic conveying air velocity control apparatus and method for controlling the pneumatic velocity in a multiple lift pneumatic conveying air velocity control apparatus
JPH0614786B2 (ja) * 1984-12-28 1994-02-23 富士電機株式会社 Ｐｗｍ信号発生回路
JPS61155124A (ja) * 1984-12-28 1986-07-14 Kawasaki Steel Corp 粉粒体定量輸送制御方法
US4863316A (en) * 1987-07-01 1989-09-05 The Perkin-Elmer Corporation Closed loop powder flow regulator
DE3721875A1 (de) * 1987-07-02 1989-01-12 Gema Ransburg Ag Verfahren und einrichtung fuer eine pulverspruehbeschichtungsanlage
DE3729705A1 (de) * 1987-09-04 1989-03-23 Gema Ransburg Ag Pulverbeschichtungsanlage, insbesondere fuer emailpulver
DE3805531A1 (de) * 1988-02-23 1989-08-31 Intec Maschinenbau Gmbh Verfahren zum foerdern von pulver und vorrichtung zur durchfuehrung dieses verfahrens
DE3822835A1 (de) * 1988-07-06 1990-03-08 Josef Schucker Verfahren und anordnung zum lackieren von werkstueckoberflaechen
DE3931962A1 (de) * 1989-09-25 1991-04-04 Rexroth Mannesmann Gmbh Ansteuerelektronik fuer ein elektrisch verstellbares stellglied
US5071289A (en) * 1989-12-27 1991-12-10 Alpheus Cleaning Technologies Corp. Particulate delivery system
DE4002760A1 (de) * 1990-01-12 1991-07-18 Schwing Gmbh F Betonpumpe fuer das nassspritzverfahren
EP0438976A3 (en) * 1990-01-24 1991-12-27 Siegfried Frei Method and device for controlling powder flow in a powder coating installation
US5271695A (en) * 1990-07-07 1993-12-21 Gema Volstatic Ag Device for pneumatically feeding powder from a container
DE4030539A1 (de) * 1990-09-27 1992-04-16 Dilthey Ulrich Prof Dr Ing Pulverdosiervorrichtung fuer einen brenner zum thermischen beschichten eines grundwerkstoffs mit einem pulverfoermigen zusatzwerkstoff
DE4125938A1 (de) * 1991-08-05 1993-02-11 Siemens Ag Verfahren und vorrichtung zum foerdern von pulver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3423094C2 (fr) † 1984-06-22 1990-10-04 J. Wagner Gmbh, 7990 Friedrichshafen, De
EP0412289A2 (fr) † 1989-08-11 1991-02-13 ITW Gema AG Dispositif de pulvérisation électrostatique
US5167714A (en) † 1989-09-29 1992-12-01 Nordson Corporation Powder coating system with configurable controller and dew point detection

Also Published As

Publication number Publication date
DE4325044C2 (de) 2002-07-18
EP0636420B1 (fr) 1998-10-28
DE59407168D1 (de) 1998-12-03
ES2123077T3 (es) 1999-01-01
EP0636420A3 (fr) 1995-09-13
US5702209A (en) 1997-12-30
ES2123077T5 (es) 2002-07-16
DE4325044A1 (de) 1995-02-02
EP0636420A2 (fr) 1995-02-01

Similar Documents

Publication Publication Date Title
EP0636420B2 (fr) Dispositif pour transporter de la poudre, en particulier de la poudre de revêtement
EP0412289B1 (fr) Dispositif de pulvérisation électrostatique
DE69813628T2 (de) Verfahren und anlage zur pneumatischen förderung fester partikel
EP0686430B1 (fr) Injecteur pour le transport pneumatique de poudre
DE19838276A1 (de) Pulver-Sprühbeschichtungsvorrichtung
EP0525303B2 (fr) Dispositif d'alimentation d'un appareil de revêtement avec un mélange air-poudre
DE3721875A1 (de) Verfahren und einrichtung fuer eine pulverspruehbeschichtungsanlage
EP0780160B1 (fr) Dispositif de revêtement de poudre par pulvérisation
EP1840055A2 (fr) Procédé et dispositif destinés à la régulation du refoulement de matériau léger transporté sur pneumatique
EP1104335B1 (fr) Dispositif d'application de revetement en poudre
EP0014769A1 (fr) Procédé et dispositif pour le remplissage pneumatique contrôlé d'un réacteur, en dépendance de la quantité déchargée
DE10111891A1 (de) Pulversprüheinrichtung für Beschichtungspulver
EP1129019B1 (fr) Procede et dispositif pour le transport pneumatique de produits en vrac
DE102007046738A1 (de) Pulversprühbeschichtungsverfahren und -vorrichtung
WO2000010727A1 (fr) Dispositif d'application de revetement en poudre
EP3691951B1 (fr) Dispositif d'écoulement et procédé de commande et/ou de réglage d'une pression dans un dispositif pneumatique de transport sable pour un véhicule ferroviaire et dispositif de transport de sable doté d'un dispositif d'écoulement
DE4409493A1 (de) Luftteilerventil
EP0351725A2 (fr) Procédé et dispositif de revêtement par pulvérisation électrostatique
DE10357814A1 (de) Gasleitungssystem, insbesondere in einer Pulversprühbeschichtungsvorrichtung
DE10042459C2 (de) Verfahren und Vorrichtung zur pneumatischen Förderung von Schüttgut
DE10111383B4 (de) Verfahren zur Förderung von Beschichtungspulver zu einer Beschichtungseinheit und zugehörige Pulverfördervorrichtung
DE60222940T2 (de) Verfahren und einrichtung zur regelung der pulvermenge in einem trägergas
WO2004106066A1 (fr) Dispositif pour appliquer de la poudre sur des feuilles a imprimer en mouvement
DE3219813A1 (de) Vorrichtung zum verteilen von pulverfoermigen stoffen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19940610

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH DE ES FR GB IT LI SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE ES FR GB IT LI SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19980309

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE ES FR GB IT LI SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59407168

Country of ref document: DE

Date of ref document: 19981203

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2123077

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19981217

ITF It: translation for a ep patent filed
RAP4 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: ITW GEMA AG

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: WAGNER INTERNATIONAL AG

Effective date: 19990712

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

27A Patent maintained in amended form

Effective date: 20020102

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): CH DE ES FR GB IT LI SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

Free format text: AUFRECHTERHALTUNG DES PATENTES IN GEAENDERTER FORM

GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)
REG Reference to a national code

Ref country code: ES

Ref legal event code: DC2A

Kind code of ref document: T5

Effective date: 20020311

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: ITW GEMA AG

Free format text: ITW GEMA AG#MOEVENSTRASSE 17#9015 ST. GALLEN (CH) -TRANSFER TO- ITW GEMA AG#MOEVENSTRASSE 17#9015 ST. GALLEN (CH)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20081212

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20081210

Year of fee payment: 15

Ref country code: SE

Payment date: 20081210

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20090120

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20081231

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20081209

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20081210

Year of fee payment: 15

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090610

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090630

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100101

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20090612

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090612

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090611