EP1384885A1 - Einrichtung zum Dosieren oder Fördern eines Fördermediums - Google Patents
Einrichtung zum Dosieren oder Fördern eines Fördermediums Download PDFInfo
- Publication number
- EP1384885A1 EP1384885A1 EP03016338A EP03016338A EP1384885A1 EP 1384885 A1 EP1384885 A1 EP 1384885A1 EP 03016338 A EP03016338 A EP 03016338A EP 03016338 A EP03016338 A EP 03016338A EP 1384885 A1 EP1384885 A1 EP 1384885A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metering
- electrically insulating
- insulating material
- piston
- dosing
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
- F04B53/166—Cylinder liners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/144—Adaptation of piston-rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
- F05C2203/0804—Non-oxide ceramics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
- F05C2203/0865—Oxide ceramics
- F05C2203/0869—Aluminium oxide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
- F05C2203/0865—Oxide ceramics
- F05C2203/0895—Zirconium oxide
Definitions
- the invention relates to a device for dosing or conveying a conveying medium, in particular for dosing coating material in a coating plant, according to Preamble of claim 1.
- Dosing devices used to the coating agent to dose.
- a disadvantage of such known metering devices is the Fact that the dosing accuracy especially at fast Setpoint changes of the dosing quantity and at high delivery pressures is unsatisfactory.
- the invention is therefore based on the object in the above described known metering the dosing accuracy especially at high delivery pressures and fast To improve setpoint changes of the dosing quantity.
- the invention is based on the technical knowledge that the unsatisfactory dosing accuracy due to a mechanical compliance the electrically insulating materials of the metering device is caused. So exist the dosing cylinder and the piston rod in the known Kolbendosiervoriquesen made of an electrically insulating plastic, in particular slightly deformed at high delivery pressures.
- the invention therefore comprises the general technical teaching, in place of the conventionally used plastic Use material that is at a sufficient electrical Insulation capacity is sufficiently rigid to those described above Avoid dosing errors.
- this is used instead of the conventionally used Plastic uses a material that is not just electrical Insulating and sufficiently rigid, but also has a high mechanical wear resistance.
- an electrically insulating material that uses a tensile modulus and / or a flexural modulus which is greater than 10 GPa.
- Such rigid materials deform during operation of a dosing device not appreciably, whereby the dosing accuracy increases becomes.
- the tensile elastic modulus or the bending elastic modulus lies of the material used even more than 100, 200 or even 300 GPa, even at high delivery pressures deformations and to avoid resulting dosing errors.
- the electrically insulating and rigid material of the mechanical components of the metering or conveying device in this case preferably has a specific electrical resistance which is greater than 10 4 ohm cm, with any values above this limit are possible.
- oxide-ceramic material is used here since oxide ceramics have a very low electrical conductivity.
- oxide ceramics have a very low electrical conductivity.
- Al 2 O 3 , MgO, ZrO 2 , Al 2 TiO 5 , steatite or cordierite may be used alone or in any combination with each other.
- An advantage of oxide-ceramic materials is the combination of a high mechanical rigidity with a good electrical insulation capacity with high mechanical wear resistance.
- non-oxide ceramic material such as SSiC, SiC, SSN, RBSN or B 4 C, and any combinations of these materials are possible.
- the Metering a metering cylinder and a metering piston on, which is slidably mounted in the metering cylinder, wherein the Dosierzyinder and / or the metering piston at least partially from the above-described electrically insulating and consist of rigid material.
- the mechanical drive of the metering piston for example be done by a piston rod, which also from the above described electrically insulating and rigid material can exist.
- the piston rod with a electric drive motor are connected to the piston rod head for.
- the Piston rod with a hydraulic drive or a pneumatic drive connected is.
- the drive side and the outlet or suction side of Kolbendosiervoriques under circumstances at a different electrical potential, like that that an electrical insulation between the inlet and outlet side the Kolbendosiervortechnisch one hand and the drive side the Kolbendosiervorraum other hand required is.
- This electrical isolation is preferably achieved by that the piston rod and the cylinder are made of an electric insulating material, but mechanically is sufficiently rigid to largely avoid dosing errors. In this case, so the length of the piston metering device forms in the cylinder axis an insulating section.
- To achieve the required Isolation capacity can be the piston rod and the dosing of the materials described above consist.
- the metering cylinder one side of the metering piston preferably has a first or outlet for the medium to be promoted and on the other Side of the metering a second inlet or outlet for a Drive medium on. The position or movement of the dosing piston can then be controlled by the pressure in the drive medium is adjusted accordingly.
- a variant of the invention provides for a piston metering device before, that the metering cylinder has an internal cross section has, which deviates from a circular shape, while the metering piston has a corresponding shape-adapted outer cross section, so that the metering in the metering cylinder axially is displaceable.
- the dosing cylinder and the dosing prevents a Rotation of the metering relative to the metering cylinder, so that can be dispensed with a separate anti-rotation device.
- FIG. 1 shows schematically a Kolbendosiervorraum 1 for use in a coating plant for coating automotive body parts with a Lacquer, such coating systems are known per se and therefore will not be further described below.
- the piston metering device 1 has a metering cylinder 2, in which a metering piston 3 is mounted axially displaceable, wherein the metering piston 3 the inner cross section of the metering cylinder 2 substantially completely.
- a metering volume 4 which in operation with a coating agent is filled, wherein the coating agent. 4 from the dosing volume through an opening 5 in the lower Front side of the dosing cylinder 2 can be pushed out.
- the drive of the metering piston 3 takes place here by a piston rod 6, which is attached to the top of the metering piston 3 is and by a drive motor 7 by means of a drive spindle 8 is moved axially. A rotation of the drive spindle. 8 thus leads to a corresponding axial displacement of the metering piston 3 and thus to a corresponding dosage of Coating agent.
- the piston rod 6 and the metering cylinder 2 in this case consist of an electrically insulating material in order to enable a metering of a high-tension coating material.
- this Al 2 O 3 is used, which has a modulus of elasticity of 360 ... 410 GPa and thus is much more rigid than the plastic commonly used.
- the use of such oxide ceramic material for the metering cylinder 2 and the piston rod 6 advantageously combines excellent electrical insulation with a high mechanical strength.
- the peculiarity of the piston dispensing device 1 ' is that the drive of the piston rod 6 'by a pneumatic Drive 9 takes place, indirectly via an additional rod 6 "acts on the piston rod 6 '.
- Figure 3 shows a further embodiment of a Piston meter 1 '', which also largely with the piston dispenser described above and shown in Figure 1 matches, so as to avoid References to the above description is referenced and in the following for corresponding components corresponding reference numerals used to distinguish only are provided with two dashes.
- the peculiarity of this embodiment is that provided for driving the metering piston 3 "no piston rod is.
- the dosing cylinder 2 '' at its top one Inlet or outlet 10 for a drive medium which in the area within the metering cylinder 2 "above the metering piston 3 "can be pressed to the metering piston 3" axially move.
- the invention is not limited to those described above Embodiments limited. Rather, a variety Variants and variations conceivable, also from use the idea of the invention and therefore in the Protection range fall.
- a typical example of a meaningful use of here is the use as a dosing Paint container in a supply system for material supply an electrostatic coating apparatus in which the Coating material, preferably by means of pushed Pig first with a predetermined volume by a first line passed into the paint container and then through a second line from the ink container is further promoted, for example corresponding to that described in EP 1 314 483 A2 A / B procedure and system.
- the subsidized material can from the piston drive during emptying or even during filling of the paint container are dosed.
- the device in a be used such supply system.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
- Figur 1
- eine Kolbendosiervorrichtung mit einem Spindelantrieb des Dosierkolbens zum Einsatz in einer Beschichtungsanlage,
- Figur 2
- eine erfindungsgemäße Kolbendosiervorrichtung mit einem pneumatischen Antrieb des Dosierkolbens sowie
- Figur 3
- eine Kolbendosiervorrichtung mit einem hydraulischen Antrieb des Dosierkolbens.
Claims (14)
- Vorrichtung (1, 1', 1'') zum Dosieren oder Fördern eines Fördermediums, insbesondere zum Dosieren von Beschichtungsmittel in einer Beschichtungsanlage, mit mehreren mechanischen Bauteilen (2, 6), die mindestens teilweise aus einem elektrisch isolierenden Material bestehen, dadurch gekennzeichnet, daß das elektrisch isolierende Material der mechanischen Bauteile (2, 6) ein Zugelastizitätsmodul und/oder ein Biegeelastizitätsmodul aufweist, das größer als 10 GPa ist.
- Vorrichtung (1, 1', 1'') nach Anspruch 1, dadurch gekennzeichnet, daß das elektrisch isolierende Material der mechanischen Bauteile (2, 6) einen spezifischen elektrischen Widerstand aufweist, der größer als 104 Ωcm ist.
- Vorrichtung (1, 1', 1'') Anspruch 1 und/oder Anspruch 2, dadurch gekennzeichnet, daß das elektrisch isolierende Material ein keramisches Material oder ein Silikat ist.
- Vorrichtung (1, 1', 1'') nach Anspruch 3, dadurch gekennzeichnet, daß das elektrisch isolierende Material ein oxidkeramisches Material ist.
- Vorrichtung (1, 1', 1'') nach Anspruch 4, dadurch gekennzeichnet, daß das elektrisch isolierende Material Al2O3, MgO, ZrO2, Al2TiO5, Steatit oder Cordierit ist oder einzelne oder mehrere dieser Materialien enthält.
- Vorrichtung (1, 1', 1'') nach Anspruch 3, dadurch gekennzeichnet, daß das elektrisch isolierende Material ein nicht-oxidkeramisches Material ist.
- Vorrichtung (1, 1', 1'') nach Anspruch 6, dadurch gekennzeichnet, daß das elektrisch isolierende Material SSiC, SiSiC, SSN, RBSN oder B4C ist oder eine einzelne oder mehrere dieser Materialien enthält.
- Vorrichtung (1, 1', 1'') nach mindestens einem der vorhergehenden Ansprüche, gekennzeichnet durch einen Dosierzylinder (2), einen Dosierkolben (3) und/oder eine Kolbenstange (6), wobei der Dosierzylinder (2), der Dosierkolben (3) und/oder die Kolbenstange (6) mindestens teilweise aus dem elektrisch isolierenden Material bestehen.
- Vorrichtung (1, 1', 1'') nach Anspruch 8, dadurch gekennzeichnet, daß der Dosierzylinder (2'') auf einer Seite des Dosierkolbens (3'') einen ersten Ein- bzw. Auslaß (5'') für das Fördermedium und auf einer anderen Seite des Dosierkolbens (3'') einen zweiten Ein- bzw. Auslaß (10) für ein Antriebsmedium aufweist.
- Vorrichtung (1, 1', 1'') nach Anspruch 8, gekennzeichnet, daß die Kolbenstange (6) mit einem Antriebsmotor (7) verbunden ist.
- Vorrichtung (1, 1', 1'') nach Anspruch 8, dadurch gekennzeichnet, daß die Kolbenstange (6') mit einem Hydraulikantrieb oder einem Pneumatikantrieb (9) verbunden ist.
- Vorrichtung (1, 1', 1'') nach mindestens einem der Ansprüche 8 bis 11, dadurch gekennzeichnet, daß der Dosierzylinder (2) einen Innenquerschnitt aufweist, der von einer Kreisform abweicht.
- Vorrichtung (1, 1', 1'') nach mindestens einem der Ansprüche 8 bis 12, dadurch gekennzeichnet, dass die aus einem elektrisch isolierenden Material bestehenden mechanischen Bauteile (2, 6) dem in dem Fördermedium herrschenden Förderdruck ausgesetzt sind.
- Vorrichtung (1, 1', 1") nach mindestens einem der Ansprüche 8 bis 13, dadurch gekennzeichnet, dass die aus elektrisch isolierendem Material bestehenden mechanischen Bauteile (2, 6) gleichzeitig als Isolationsbauteil dienen und die bei der Dosierung bzw. Förderung entstehenden Zugkräfte übertragen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10233633 | 2002-07-24 | ||
DE10233633A DE10233633B4 (de) | 2002-07-24 | 2002-07-24 | Vorrichtung zum Dosieren oder Fördern eines auf Hochspannungspotential aufgeladenen Beschichtungsmittels in einer Beschichtungsanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1384885A1 true EP1384885A1 (de) | 2004-01-28 |
EP1384885B1 EP1384885B1 (de) | 2005-10-12 |
Family
ID=29796549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03016338A Expired - Lifetime EP1384885B1 (de) | 2002-07-24 | 2003-07-18 | Kolbendosiervorrichtung zum Dosieren oder Fördern eines Fördermediums |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1384885B1 (de) |
AT (1) | ATE306615T1 (de) |
DE (1) | DE10233633B4 (de) |
ES (1) | ES2248688T3 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004058053A1 (de) * | 2004-12-01 | 2006-06-14 | Dürr Systems GmbH | Verfahren und Kolbendosierer zur dosierten Materialversorgung einer Beschichtungsvorrichtung |
US7908994B2 (en) | 2005-10-21 | 2011-03-22 | Duerr Systems, Inc. | Automatically steered coating machine also a container for the coating material |
US8020784B2 (en) | 2005-10-07 | 2011-09-20 | Durr Systems Inc. | Coating material supply installation and associated operating procedure |
US8333164B2 (en) | 2006-12-12 | 2012-12-18 | Duerr Systems, Gmbh | Coating apparatus comprising a metering device |
US8418647B2 (en) | 2005-10-21 | 2013-04-16 | Dürr Systems Inc. | Procedure and piston type metering devices for the metered material supply for a coating device |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1772194B1 (de) | 2005-10-07 | 2019-01-09 | Dürr Systems AG | Beschichtungsmittel-Versorgungseinrichtung und zugehöriges Betriebsverfahren |
DE102006038563A1 (de) * | 2006-08-17 | 2008-04-30 | Eisenmann Lacktechnik Gmbh & Co. Kg | Vorrichtung zum Fördern eines elektrisch leitfähigen fluiden Beschichtungsmaterials |
DE102007029195A1 (de) | 2007-06-25 | 2009-02-19 | Dürr Systems GmbH | Beschichtungseinrichtung mit einer Dosiervorrichtung |
DE102006058562A1 (de) | 2006-12-12 | 2008-08-14 | Dürr Systems GmbH | Beschichtungseinrichtung mit einer Dosiervorrichtung |
DE102017111823A1 (de) * | 2017-05-30 | 2018-12-06 | Eisenmann Se | Isolationseinrichtung sowie Beschichtungssystem hiermit |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1365292A (en) * | 1971-10-01 | 1974-08-29 | Birmingham Small Arms Co Ltd | Pumps |
EP0270130A2 (de) * | 1986-12-05 | 1988-06-08 | Saphirwerk Industrieprodukte AG | Feindosierpumpe für Flüssigkeiten |
DE4108105A1 (de) * | 1991-03-13 | 1992-09-17 | Kaercher Gmbh & Co Alfred | Kolben fuer die pumpe eines hochdruckreinigungsgeraetes |
JPH0518354A (ja) * | 1991-07-09 | 1993-01-26 | Kubota Corp | 非鉄金属溶湯用セラミツクポンプ |
EP0610708A1 (de) * | 1993-02-09 | 1994-08-17 | MAUCHER, Eberhard | Dosierpumpe |
EP0640017A1 (de) * | 1992-05-15 | 1995-03-01 | Abb Trallfa Robot A/S | Vorrichtung zum dosieren von farbe für ein programmgesteuertes spritzlackiersystem |
US6126404A (en) * | 1997-06-09 | 2000-10-03 | Saphirwerk Industrieprodukte Ag | Apparatus for the metered delivery of fluids |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3741968C3 (de) * | 1987-12-11 | 2002-11-14 | Huebers Verfahrenstech | Dosierpumpe |
DE4303463C2 (de) * | 1993-02-06 | 1996-04-04 | Abb Patent Gmbh | Fördervorrichtung |
-
2002
- 2002-07-24 DE DE10233633A patent/DE10233633B4/de not_active Expired - Lifetime
-
2003
- 2003-07-18 AT AT03016338T patent/ATE306615T1/de not_active IP Right Cessation
- 2003-07-18 EP EP03016338A patent/EP1384885B1/de not_active Expired - Lifetime
- 2003-07-18 ES ES03016338T patent/ES2248688T3/es not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1365292A (en) * | 1971-10-01 | 1974-08-29 | Birmingham Small Arms Co Ltd | Pumps |
EP0270130A2 (de) * | 1986-12-05 | 1988-06-08 | Saphirwerk Industrieprodukte AG | Feindosierpumpe für Flüssigkeiten |
DE4108105A1 (de) * | 1991-03-13 | 1992-09-17 | Kaercher Gmbh & Co Alfred | Kolben fuer die pumpe eines hochdruckreinigungsgeraetes |
JPH0518354A (ja) * | 1991-07-09 | 1993-01-26 | Kubota Corp | 非鉄金属溶湯用セラミツクポンプ |
EP0640017A1 (de) * | 1992-05-15 | 1995-03-01 | Abb Trallfa Robot A/S | Vorrichtung zum dosieren von farbe für ein programmgesteuertes spritzlackiersystem |
EP0610708A1 (de) * | 1993-02-09 | 1994-08-17 | MAUCHER, Eberhard | Dosierpumpe |
US6126404A (en) * | 1997-06-09 | 2000-10-03 | Saphirwerk Industrieprodukte Ag | Apparatus for the metered delivery of fluids |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 017, no. 294 (M - 1424) 7 June 1993 (1993-06-07) * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004058053A1 (de) * | 2004-12-01 | 2006-06-14 | Dürr Systems GmbH | Verfahren und Kolbendosierer zur dosierten Materialversorgung einer Beschichtungsvorrichtung |
DE102004058053B4 (de) * | 2004-12-01 | 2006-12-28 | Dürr Systems GmbH | Verfahren und Kolbendosierer zur dosierten Materialversorgung einer Beschichtungsvorrichtung |
US8020784B2 (en) | 2005-10-07 | 2011-09-20 | Durr Systems Inc. | Coating material supply installation and associated operating procedure |
US7908994B2 (en) | 2005-10-21 | 2011-03-22 | Duerr Systems, Inc. | Automatically steered coating machine also a container for the coating material |
US8418647B2 (en) | 2005-10-21 | 2013-04-16 | Dürr Systems Inc. | Procedure and piston type metering devices for the metered material supply for a coating device |
US8333164B2 (en) | 2006-12-12 | 2012-12-18 | Duerr Systems, Gmbh | Coating apparatus comprising a metering device |
EP2853312A2 (de) | 2006-12-12 | 2015-04-01 | Dürr Systems GmbH | ICC-Dosierung |
Also Published As
Publication number | Publication date |
---|---|
DE10233633B4 (de) | 2005-09-01 |
ES2248688T3 (es) | 2006-03-16 |
DE10233633A1 (de) | 2004-02-12 |
ATE306615T1 (de) | 2005-10-15 |
EP1384885B1 (de) | 2005-10-12 |
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