EP0636420B1 - Pulverfördervorrichtung, insbesondere für Beschichtungspulver - Google Patents
Pulverfördervorrichtung, insbesondere für Beschichtungspulver Download PDFInfo
- Publication number
- EP0636420B1 EP0636420B1 EP94108909A EP94108909A EP0636420B1 EP 0636420 B1 EP0636420 B1 EP 0636420B1 EP 94108909 A EP94108909 A EP 94108909A EP 94108909 A EP94108909 A EP 94108909A EP 0636420 B1 EP0636420 B1 EP 0636420B1
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- EP
- European Patent Office
- Prior art keywords
- air
- powder
- conveyor
- ref
- rate
- 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
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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
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- 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
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- 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 Jet pumps for the pneumatic conveying of Coating powders are known from DE-PS 1 266 685 (US-PS 3 504 945).
- Spray devices in the form of Spray guns for the electrostatic spray coating of Objects with coating powder are from US-PS 4 196 465.
- DE-OS 39 26 624 A1 it is known an injector delivery airflow and a Supply additional air flow to an injector. Of the Conveying air flow is used to create a vacuum, which Sucks powder into the injector, and to transport the sucked powder to a spray device with which sprayed the powder onto an object to be coated becomes.
- the additional air is used to adjust the strength of the Negative pressure or to maintain a certain Total air volume if the conveying air volume is below one certain value drops. So that the total amount of air can be kept at a desired value, the Conveyed air and the additional air regulated separately so that the total air volume regardless of the proportions of Conveying air and additional air a desired constant value Has.
- the air is required to convey the powder. Of the Total airflow must have a certain minimum speed have 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 affects the coating quality undesirably.
- Powder flow rate (amount of powder delivered per unit of time) increased or decreased.
- a practical value for the powder rate is 300 g / min.
- the conveying air rate and the additional air rate must be the same be set so that the desired powder feed rate is generated, however, the total air flow rate consisting of Conveying air and additional air remains constant or one takes the desired value.
- the object of the invention is to solve a problem To create device in which with less Time required and less personnel expenditure the required Setting the amount of conveying air per unit of time and Additional air volume per unit of time is possible if one desired powder delivery per unit of time for a desired total amount of air delivered per unit of time is set or changed.
- the invention has the following advantages in particular: Storage of a calibration diagram for a specific one Powder system, especially electrostatic Powder spray coating system, can be the desired, per Quantity of powder delivered in a simple manner be changed and this change results in completely automatically while maintaining the desired one Total air volume the required new amount per Unit of time conveyed air and on per unit of time pumped additional air.
- There can be several in the diagram Diagram lines can be stored, each of which Diagram line a specific funded per unit of time Total air volume over which of a Diagram axis with the powder quantities on another Diagram axis for conveying air quantities for a specific one Powder quantity required conveying air quantity "mirrored” can be. This "mirroring" means "reading" or “calculate” by the computer.
- the computer also forms the difference between the total air volume and the itself resulting conveying air volume. This difference is the Value for the additional air volume at the selected Amount of powder is required and in extreme cases "zero" can.
- the invention enables remote control in the Way that the computer and its signal inputs at one from the fluid lines of the conveying air and the additional air remote location can be arranged. In contrast in the prior art, this must be done directly on the lines the auxiliary air and the conveying air pressure regulator by hand can be set.
- Another advantage of the invention is the possibility without complicated control circuits Volume flow controller for the regulation of the conveying air and the Use additional air.
- the volume flow controllers can Pressure regulators are subordinated to an even better one Achieve control accuracy.
- 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 comes 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 target value signal FV-Soll from the computer 24 via an electric conveying air volume setpoint line 36 and an electric conveying air volume from a conveying air volume sensor 38 in the conveying air line 4 via an electric conveying air volume actual value line 40 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 setpoint signal ZV-Soll from the computer 24 via an electrical additional air volume setpoint line 42 and an electric additional air volume actual value sensor 44 in the additional air line 26 via an electrical additional air volume actual value line 46 Auxiliary 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) is 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 air volume setpoint "GV-Set” 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-actual 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 at its input 60 a powder mass-target-actual comparison signal 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 input entered at input 52 if the actual powder mass value m actual of the powder mass sensor 56 is equal to the target powder mass value m-target is.
- the computer usually contains at least one processor and a data memory.
- a quantity delivered per unit of time can also be called a "rate" be designated. Therefore, the Expressions of powder mass rate, conveying air rate and Additional air rate used.
- the computer 24 is also provided with an input 62 Setting a high voltage setpoint HS setpoint provided, depending on which of the computers 24 over the electrical line 22 of the spray device 16 High voltage setting signal. Thereby the entire powder delivery device can be accessed from the computer 24 away from the sprayer 16 and away from the volume flow controllers 32 and 34 controlled and regulated will.
- Fig. 3 parts corresponding to parts of Fig. 1 are provided with the same reference numbers.
- the embodiment of Fig. 3 is functionally essentially the same as that of Fig. 1.
- the Conveying air volume flow controller 32 the conveying air volume flow the compressed air source 30 not directly in the Conveying air line 4 affects, but indirectly by the Conveying air volume flow controller 32 no electrical Delivery air volume setpoint signal FV setpoint from FIG. 1, but a corresponding delivery air pressure setpoint signal FP setpoint generated and via an electrical setpoint signal line 136 to a conveying air pressure regulator 132, which in the compressed air path between the compressed air source 30 and the conveying air line 4 is located, whereas at this point In Fig.
- the conveying air volume flow controller 32 is arranged is; as another difference from Fig. 1 is similar Way, an auxiliary air pressure regulator 134 instead of Auxiliary air volume flow controller 34 in the auxiliary 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 auxiliary air pressure regulator 134 is fed.
- 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, compares them Actual value signals FP-Ist with the electrical delivery air pressure setpoint signals FP setpoint of the electrical conveying air pressure setpoint signal line 136 of Conveying air volume flow controller 32 and controls 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 that Conveying 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 also 3 shows a "volume flow control".
- the auxiliary air pressure regulator 134 receives from one Compressed air sensor 144 in the additional air line 26 via a electrical additional air pressure actual value line 146 electrical Additional air actual value signals ZP-actual, compares them with the Auxiliary air setpoint signals ZP target of the auxiliary air pressure setpoint line 142 and generated depending on Comparison result an additional air pressure with which the Additional air from the compressed air source 30 of the additional air line 26 is supplied.
- the additional air volume flow controller 34 receives from the additional air volume flow sensor 44 in the Auxiliary air line 26 via the electrical Additional air volume actual value line 46 electrical Auxiliary air volume actual value signals ZV-Ist as for the in Fig. 1 embodiment shown. As a result, 3 the additional air control is a "volume flow control".
- the conveying air volume flow controller 32 and the Additional air volume flow regulators 34 can correspond to FIG. 1 outside of the computer 24 as a separate, attached to it connected devices are formed or according to FIG. 3 integrated into the computer and partially or completely by the software and / or hardware of the computer 24 be educated. 3 are part of the computer 24 the diagram 50 stored in it and by a Quadrangle 124 schematically illustrates the hardware and software of the Computer 24 and the dependency of the diagram 50, the Conveying air volume flow controller 32 and des 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 may contain electrical elements.
- FIG. 3 shows a central electronic control system 200 for several spray devices 16, each one have your own computer 24.
- the computers are with the central control system 200 in a bidirectional Data exchange, which is shown schematically in Fig. 3 by a Double arrow 202 is shown.
- the computer 24 receives from the central control system 200 each the powder mass setpoint m-target, the total air volume target value GV target, 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 be included exist that 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)
Description
- Fig. 1
- schematisch eine Pulverfördervorrichtung für Beschichtungspulver gemäß der Erfindung,
- Fig. 2
- einen Längsschnitt durch einen Injektor von Fig. 1,
- Fig. 3
- schematisch eine weitere Ausführungsform einer Pulverfördervorrichtung für Beschichtungspulver gemäß der Erfindung als Teil einer Pulverbeschichtungsanlage, welche mehrere solcher Pulverfördervorrichtungen enthält, welche alle von einer gemeinsamen zentralen Steueranlage gesteuert werden.
Claims (11)
- Pulverfördervorrichtung, insbesondere für Beschichtungspulver, mit folgenden Merkmalen:mit einem Injektor (2), in welchem nach dem Prinzip eines Venturirohres ein Förderluftstrom einer Förderluftleitung (4) einen Unterdruck erzeugt, durch welchen Pulver aus einem Pulverbehälter (10) angesaugt und dann vom Förderluftstrom durch eine Pulver-Luft-Leitung (12) weitertransportiert wird; mit einem Zusatzluftstrom einer Zusatzluftleitung (26), welcher im Unterdruckbereich oder an einer stromabwärts davon gelegenen Stelle dem Förderluftstrom hinzugefügt werden kann; mit einem Förderluftregler (32; 32, 132); mit einem Zusatzluftregler (34; 34, 134); mit einem Computer (24);
dadurch gekennzeichnet,daß im Computer (24) als Eichdiagramm (50) eine Vielzahl vorbestimmter Pulverförderraten, geförderte Pulvermasse (m) pro Zeiteinheit, als eine erste Diagrammachse und eine Vielzahl von Förderluftraten, geförderte Förderluft (FV) pro Zeiteinheit, als eine zweite Diagrammachse gespeichert sind, wobei die Förderluftraten (FV) bei einer bestimmten Gesamtluftrate (GV) bestehend aus Förderluft (FV) und gegebenenfalls hinzugefügter Zusatzluft (ZV) zur Erzeugung der Pulverförderraten (m) erforderlich sind und durch Versuche ermittelt wurden; daß der Computer (24) einen Pulverraten-Sollwert-Eingang (52) zur Eingabe eines gewählten Pulverraten-Sollwertes (m-Soll) aufweist; daß der Computer (24) dem Diagramm (50) entsprechend programmierte Software und/oder programmierte Hardware enthält, welche für einen eingegebenen Pulverraten-Sollwert (m-Soll) aus dem Diagramm (50) in Abhängigkeit von der vorbestimmten Gesamtluftrate (GV) die dafür erforderliche Förderluftrate (FV) und die dafür erforderliche Zusatzluftrate (geförderte Zusatzluft ZV pro Zeiteinheit) errechnen und in Abhängigkeit von dem Berechnungsergebnis und in Abhängigkeit von einem Pulvermassenstrom-Istwert (m-Ist) einen Förderluftrate-Sollwert (FV-Soll; FV-Soll und FP-Soll) und einen Zusatzluftrate-Sollwert (ZV-Soll; ZV-Soll und ZP-Soll) erzeugen; daß der Förderluftregler (32; 32, 132) die Förderluft in Abhängigkeit vom Förderluftrate-Sollwert (FV-Soll; FP-Soll) und in Abhängigkeit von einem Förderluftrate-Istwert (FV-Ist; (FV-Ist, FP-Ist) regelt, welcher von einem Förderluftrate-Istwert-Sensor (38; 38, 138) erzeugt wird; daß der Zusatzluftregler (34; 34, 134) die Zusatzluftrate in Abhängigkeit vom Zusatzluftrate-Sollwert (ZV-Soll; ZV-Soll, ZP-Soll) und in Abhängigkeit eines von einem Zusatzluft-Istwert (ZV-Ist; ZV-Ist, ZP-Ist) regelt, welcher von einem Zusatzluft-Istwert-Sensor (44; 44, 144) erzeugt wird. - Pulverfördervorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die gewünschte Gesamtluftrate im Diagramm (50) des Computers (24) als eine gerade oder gekrümmte Linie (GV) gespeichert ist, über welche für jede gespeicherte Pulverförderrate (m) die bei dieser vorbestimmten Gesamtluftrate erforderliche Förderluftrate (FV) aus dem Diagramm entnommen werden kann. - Pulverfördervorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß für mehrere vorbestimmte Gesamtluftraten (GV1, GV2) Diagrammlinien im Diagramm (50) des Computers (24) gespeichert sind, über welche der Computer für eine ausgewählte Pulverförderrate (z.B. m1 oder m2) und eine gewählte Gesamtluftrate (z.B. GV1 oder GV2) die dazu erforderliche Förderluftrate (z.B. FV1 oder FV2) berechnet, dann durch die Differenz zwischen Gesamtluftrate und Förderluftrate die gegebenenfalls erforderliche Zusatzluftrate errechnet, und in Abhängigkeit von diesen Berechnungen einen Förderluftrate-Sollwert (FV-Soll; FV-Soll, FP-Soll) und einen Zusatzluftrate-Sollwert (ZV-Soll; ZV-Soll, ZP-Soll) erzeugt, und daß der Computer (24) einen Eingang (52) zur Einstellung eines gewünschten Pulvermasse-Sollwertes (m-Soll) und einen Eingang (54) zur Einstellung eines gewünschten Gesamtluftraten-Sollwertes (GV-Soll) aufweist. - Pulverfördervorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Förderluftregler (32) ein Volumenstromregler ist welcher das pro Zeiteinheit geförderte Förderluftvolumen regelt. - Pulverfördervorrichtung nach Anspruch 4,
dadurch gekennzeichnet,
daß ein Förderluft-Druckregler (132) vorgesehen ist, welcher elektrische Förderluft-Druck-Sollwerte erhält, die vom Förderluft-Volumenstromregler (32) in der Weise erzeugt werden, daß sie von ihm erzeugten Förderluftvolumenstrom-Sollwerten entsprechen, und daß der Förderluft-Druckregler (132) in Abhängigkeit von diesen Förderluftdruck-Sollwerten (FP-Soll) den Druck regelt, mit welchem die Förderluft zum Injektor (2) gefördert wird. - Pulverfördervorrichtung nach Anspruch 5,
dadurch gekennzeichnet,
daß der Förderluft-Volumenstromregler (32) durch die Hardware oder Software des Computers (24) gebildet ist. - Pulverfördervorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Zusatzluft-Regler ein Zusatzluft-Volumenstromregler (34) ist, welcher das pro Zeiteinheit geförderte Zusatzluftvolumen regelt. - Pulverfördervorrichtung nach Anspruch 7,
dadurch gekennzeichnet,
daß ein Zusatzluft-Druck-Regler (134) vorgesehen ist, welchem elektrische Zusatzluftdruck-Sollwerte (ZP-Soll) zugeführt werden, welche vom Zusatzluft-Volumenstromregler (34) derart erzeugt werden, daß sie von ihm erzeugten Zusatzluft-Volumenstrom-Sollwerten entsprechen, und daß der Zusatzluft-Druckregler (134) in Abhängigkeit von diesen Zusatzluftdruck-Sollwerten den Druck regelt, mit welchem die Zusatzluft dem Pulver-Luft-Strom im Injektor oder stromabwärts von ihm hinzugefügt wird. - Pulverfördervorrichtung nach Anspruch 8,
dadurch gekennzeichnet,
daß der Zusatzluft-Volumenstromregler (34) durch die Hardware oder Software des Computers (24) gebildet ist. - Pulverfördervorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Computer (24) an eine zentrale Steueranlage (200) angeschlossen ist, von welcher er die Sollwerte für das Pulver und für die Gesamtluftmenge bestehend aus Förderluft und gegebenenfalls hinzugefügter Zusatzluft erhält. - Pulverfördervorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß ein Pulvermasse-Istwertsensor (56) vorgesehen ist, welcher in Abhängigkeit von der im Pulver-Luft-Strom vorhandenen Pulvermassenrate ein elektrisches Pulvermasse-Istwert-Signal (m-Ist) erzeugt, daß ein dem Pulvermasse-Istwert-Signal (m-Ist) entsprechendes Signal dem Computer zugeführt wird, daß der Computer (24) derart programmiert ist, daß er aus dem Pulvermasse-Istwert-Signal (m-Ist) und dem Pulvermasse-Sollwert (m-Soll) ein Pulvermasse-Soll-Ist-Vergleichssignal als Pulvermasse-Signal (m1, m2) auf der Pulverförderraten-Diagrammachse (m) zur Berechnung der Förderluftrate (FV1, FV2) auf der Förderluftraten-Diagrammachse (FV) verwendet.
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 (de) | 1995-02-01 |
EP0636420A3 EP0636420A3 (de) | 1995-09-13 |
EP0636420B1 true EP0636420B1 (de) | 1998-10-28 |
EP0636420B2 EP0636420B2 (de) | 2002-01-02 |
Family
ID=6493732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94108909A Expired - Lifetime EP0636420B2 (de) | 1993-07-26 | 1994-06-10 | Pulverfördervorrichtung, insbesondere für Beschichtungspulver |
Country Status (4)
Country | Link |
---|---|
US (1) | US5702209A (de) |
EP (1) | EP0636420B2 (de) |
DE (2) | DE4325044C2 (de) |
ES (1) | ES2123077T5 (de) |
Families Citing this family (33)
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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 (de) * | 1998-08-13 | 2000-02-16 | B a r m a g AG | Pulverdosiereinrichtung mit Dosierscheibe |
DE19838269A1 (de) * | 1998-08-22 | 2000-02-24 | Itw Gema Ag | Pulverbeschichtungsvorrichtung |
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-
1993
- 1993-07-26 DE DE4325044A patent/DE4325044C2/de not_active Expired - Fee Related
-
1994
- 1994-06-10 ES ES94108909T patent/ES2123077T5/es not_active Expired - Lifetime
- 1994-06-10 DE DE59407168T patent/DE59407168D1/de not_active Expired - Fee Related
- 1994-06-10 EP EP94108909A patent/EP0636420B2/de not_active Expired - Lifetime
- 1994-07-26 US US08/280,870 patent/US5702209A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE4325044C2 (de) | 2002-07-18 |
US5702209A (en) | 1997-12-30 |
ES2123077T5 (es) | 2002-07-16 |
DE4325044A1 (de) | 1995-02-02 |
DE59407168D1 (de) | 1998-12-03 |
EP0636420B2 (de) | 2002-01-02 |
ES2123077T3 (es) | 1999-01-01 |
EP0636420A3 (de) | 1995-09-13 |
EP0636420A2 (de) | 1995-02-01 |
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