EP0897754A2 - Vorratsbehälter für Pulverlackanlage - Google Patents
Vorratsbehälter für Pulverlackanlage Download PDFInfo
- Publication number
- EP0897754A2 EP0897754A2 EP98112620A EP98112620A EP0897754A2 EP 0897754 A2 EP0897754 A2 EP 0897754A2 EP 98112620 A EP98112620 A EP 98112620A EP 98112620 A EP98112620 A EP 98112620A EP 0897754 A2 EP0897754 A2 EP 0897754A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- storage container
- powder coating
- suction
- line
- air
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 21
- 239000011248 coating agent Substances 0.000 title claims abstract description 14
- 238000000576 coating method Methods 0.000 title claims abstract description 14
- 238000009434 installation Methods 0.000 title 1
- 238000009423 ventilation Methods 0.000 claims abstract description 6
- 238000000605 extraction Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 4
- 239000003570 air Substances 0.000 description 27
- 238000005243 fluidization Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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
- 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
- B05B7/1472—Powder extracted from a powder container in a direction substantially opposite to gravity by a suction device dipped into the powder
Definitions
- the invention relates to a device in the preamble of the first claim specified type.
- Storage containers according to the invention are usually containers, that are in the immediate vicinity of a paint booth.
- the powder is through the supply of a fluid, usually compressed air, in suspension in the reservoir held.
- a fluid usually compressed air
- the fluidized powder is then made from the storage container with the aid of an injector conveyed into a powder hose that opens into the application nozzle.
- a disadvantage of the known way of removing the excess air from the fluidization is that the removal of the air can not be regulated precisely. If too much air is drawn off, too much powder coating will be entrained. Is not enough Aspirated air, there is a risk of deposits in the suction hose the pressure conditions change, which ultimately leads to overpressure in the reservoir leads.
- the object of the present invention is to remedy this and a suction system to propose on a storage container for powder coating systems, with where the pressure difference to the environment is kept close to zero without fluctuations can be.
- This predicate container 1 is constructed commercially, i. H. on its bottom area has an inlet 2 for compressed air to inside to keep the existing powder in suspension.
- a commercially available injector 3 is arranged in its upper region a powder hose 4 is connected to the for coating the workpieces remove the necessary air-powder mixture from the storage container.
- the compressed air supplied is discharged from the storage container 1.
- a vent line 5 is required, which is in the upper region of the storage container 1 protrudes. Its protruding end protrudes into an intake funnel 6 of an extraction system 7.
- This suction system 7 is connected to a suction line 8 which opens into the spray booth in a manner known per se.
- the suction funnel 6 belongs to an air quantity booster, a so-called Airmover that works according to the Coanda effect. Ordinary is used as the drive Compressed air, which is fed via a feed line 9 into an annular chamber. Here the compressed air is pressed through an annular gap, where through a thin layer of air high speed arises on the inner contour of the air volume booster. The flow of compressed air is thus directed towards the suction line 8. Because of the high-speed flow in the air volume booster Air causes a pressure drop in the intake funnel 6, which causes large amounts of ambient air be sucked in. At the same time, the vent line 5 excess air is sucked in from the fluidization. However, the suction pressure is in the vent line 5 not so large that noticeable amounts of powder coating particles get carried away.
- the area ratio has proven to be advantageous here the area of the suction funnel at the level of the end of the vent line 5 (minus the cross-sectional area of the vent line) to the cross-sectional area the ventilation line in the range from 1.5 to 3.
Landscapes
- Nozzles (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims (3)
- Vorratsbehälter für eine Pulverlackanlage, der eine Zufuhrleitung für ein Fluid, insbesondere Luft, sowie einen Injektor zur Entnahme von fluidisiertem Pulverlack aufweist und mit einer Absaugleitung ausgestattet ist, dadurch gekennzeichnet, daß in dem oberen Bereich des Vorratsbehälters (1) eine Entlüftungsleitung (5) vorgesehen ist, deren offenes Ende in einen Ansaugtrichter (6) einer Absauganlage (7) mündet.
- Vorratsbehälter für eine Pulverlackanlage nach Anspruch 1,
dadurch gekennzeichnet, daß die Absauganlage (7) als Luftmengenverstärker ausgestaltet ist. - Vorratsbehälter für eine Pulverlackanlage nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß das Flächenverhältnis des Ansaugtrichters (6) auf Höhe des Endes der Entlüftungsleitung (5) abzüglich der Querschnittsfläche der Entlüftungsleitung (5) zur Querschnittsfläche der Entlüftungsleitung (5) an ihrem Ende im Bereich von 1,5 bis 3 liegt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1997136326 DE19736326C1 (de) | 1997-08-21 | 1997-08-21 | Vorratsbehälter für Pulverlackanlage |
| DE19736326 | 1997-08-21 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0897754A2 true EP0897754A2 (de) | 1999-02-24 |
| EP0897754A3 EP0897754A3 (de) | 2000-10-25 |
| EP0897754B1 EP0897754B1 (de) | 2003-09-17 |
Family
ID=7839677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19980112620 Expired - Lifetime EP0897754B1 (de) | 1997-08-21 | 1998-07-08 | Pulverlackanlage mit einem Vorratsbehälter |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0897754B1 (de) |
| DE (1) | DE19736326C1 (de) |
| ES (1) | ES2206798T3 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2453753C3 (de) * | 1974-11-13 | 1982-05-27 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Bogenbremse |
| GB2118512B (en) * | 1982-04-21 | 1986-08-06 | Ace Nylon | Conveyor for particulate material |
| US4730647A (en) * | 1986-12-08 | 1988-03-15 | Nordson Corporation | Powder feeder apparatus |
| US5017324A (en) * | 1986-12-08 | 1991-05-21 | Nordson Corporation | Method for depositing particulate material into a pad of fibrous material in a forming chamber |
| DE3827014A1 (de) * | 1988-04-14 | 1989-10-26 | Erich Kraemer | Verfahren und vorrichtung zum zufuehren eines pulverfoermigen materials zu einer versorgungseinrichtung |
| DE3920635A1 (de) * | 1989-06-23 | 1991-01-03 | Wagner Int | Einrichtung zum fluidisieren und abfoerdern von pulver |
-
1997
- 1997-08-21 DE DE1997136326 patent/DE19736326C1/de not_active Expired - Fee Related
-
1998
- 1998-07-08 EP EP19980112620 patent/EP0897754B1/de not_active Expired - Lifetime
- 1998-07-08 ES ES98112620T patent/ES2206798T3/es not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| None |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19736326C1 (de) | 1998-09-17 |
| EP0897754A3 (de) | 2000-10-25 |
| EP0897754B1 (de) | 2003-09-17 |
| ES2206798T3 (es) | 2004-05-16 |
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