EP0918974A1 - Vorrichtung zum gepulsten ausgeben eines mediums zur behandlung von oberflächen - Google Patents
Vorrichtung zum gepulsten ausgeben eines mediums zur behandlung von oberflächenInfo
- Publication number
- EP0918974A1 EP0918974A1 EP97928096A EP97928096A EP0918974A1 EP 0918974 A1 EP0918974 A1 EP 0918974A1 EP 97928096 A EP97928096 A EP 97928096A EP 97928096 A EP97928096 A EP 97928096A EP 0918974 A1 EP0918974 A1 EP 0918974A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- medium
- frame
- jet delivery
- medium jet
- agent
- 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
- 238000004140 cleaning Methods 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 28
- 239000008237 rinsing water Substances 0.000 claims description 4
- 230000000284 resting effect Effects 0.000 claims 1
- 238000001035 drying Methods 0.000 description 19
- 239000007921 spray Substances 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/14—Drying solid materials or objects by processes not involving the application of heat by applying pressure, e.g. wringing; by brushing; by wiping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
Definitions
- the invention relates to a device for pulsed output of a medium for treating surfaces according to the preamble of patent claim 1.
- a liquid with which the surfaces of the objects are wetted must be removed.
- the aim is to dry the objects and / or to recover the liquid.
- the recovery of the liquid is important if it is a chemical solution or e.g. is rinsing water that could pollute the environment and / or is expensive.
- the device according to patent specification EP 0 486 711 comprises a container for holding the objects to be dried.
- two air jet dispensers arranged at a mutual distance are arranged.
- the objects to be treated can be inserted between the air jet delivery devices.
- the device has a drive which is drive-connected to the air jet delivery devices in such a way that they are moved parallel and in opposite directions to one another during operation.
- Each air jet delivery device comprises a sequence of pipe sections arranged next to one another and aligned with one another in the axial direction and connected to a compressed air source.
- Each pipe section has a number of compressed air outlet openings.
- Another disadvantage of the device according to patent specification EP 0 486 711 is that it has one own, specially made container.
- the objects to be dried are inserted into the container of the device hanging from a product carrier.
- a single object is acted upon simultaneously by several air jets. If light objects are processed, it can happen that individual objects are blown away from the goods carrier.
- the object of the present invention is to create a device for the pulsed delivery of a medium for treating surfaces, in which the disadvantages of the known pulse blow dryer are eliminated.
- Another object is to design the device in such a way that objects can be wetted, rinsed, cleaned and / or treated with steam using various liquids (e.g. water, cleaning liquid, etc.).
- the proposed device for pulsed output Medium for the treatment of surfaces which is also referred to below as a pulse blow-off spray cleaning device, can have its own container. But it can also be used together with an existing container or in an existing drying oven, for example. But it can also be installed in a crane (transport device).
- the proposed pulse blow-off spray cleaning device also has a drive which is drive-connected to the medium jet dispensing devices in such a way that they are moved parallel and in opposite directions or in parallel and in the same direction to one another during operation.
- Each medium jet delivery unit consists of a vertically extending support rod, to which one, two or more medium jet delivery devices are attached.
- a medium jet delivery device in turn consists of a plurality of hollow nozzle rods.
- the nozzle rods run parallel or at an angle to the carrier rod.
- the medium jet dispensers can be arranged side by side in pairs. Gases, in particular air, steam or liquids, in particular water or cleaning liquids, can be used as media for treating objects. If air is used as the medium, each nozzle rod is connected to a compressed air source via a valve. Furthermore, each nozzle rod has a plurality of outlet nozzles, which are preferably arranged in two at least approximately parallel longitudinal rows.
- the nozzle rods emit a large number of pulsating media jets, which are directed towards the objects at a frequency of about 1 to 50 Hertz (ie, not high-frequency), in order to release the liquid or dirt. to expel tongues.
- a relative movement is generated between the objects to be treated and the medium jet delivery units, which is directed perpendicularly or obliquely to the direction of flow of the compressed air jets.
- the pressure of the medium in the medium jet dispensers can be changed and thus adapted to the different sizes and shapes of the objects to be treated.
- Fig. 1 is a schematic, perspective view of a pulse blow-off spray cleaning device according to the invention with the valve arrangement, with which the compressed air pressure in the medium jet dispensing devices can be controlled;
- FIG. 2a is a schematic plan view of an I pulse blow-off
- Spray-cleaning device the medium jet delivery devices are moved parallel and in opposite directions to each other;
- 2b is a schematic plan view of a pulse blow-off
- Spray-cleaning device the medium jet delivery devices are moved parallel and in the same direction to each other;
- FIG. 3 shows a schematic illustration of the nozzle rod arrangement of an inventive pulse-blow-off spray cleaning device according to FIG. 1;
- FIG. 4 shows a front view of a medium jet delivery unit with two medium jet delivery devices, the nozzle bars of which run parallel to the carrier bar;
- 5 shows a front view of a medium jet delivery unit with two medium jet delivery devices, the nozzle rods of which run obliquely to the carrier rod; 6 shows a longitudinal section through a nozzle rod with outlet nozzles;
- FIG. 7a shows a front view of a part of a nozzle rod with outlet nozzles arranged in two rows, the outlet nozzles of the two rows being arranged offset with respect to one another;
- FIG. 7b shows a cross section A-A through a nozzle rod according to FIG. 6a;
- FIG. 7c shows a front view of a part of a nozzle rod with outlet nozzles arranged in two rows, the outlet nozzles of the two rows being arranged offset from one another;
- FIG. 7d shows a cross section B-B through a nozzle rod according to FIG. 6c;
- Fig. 8 is a schematic representation of a nozzle rod of a medium jet dispenser, which emits two medium jets that strike objects to be treated.
- the proposed pulse blow-off spray cleaning device 1 has a frame 2 which consists of two longitudinal struts 3 and two transverse struts 4 with, for example, an L-shaped cross section.
- One leg 7, 5 of each cross strut 4 and each longitudinal strut 3 runs horizontally; the other leg 6 runs vertically.
- the vertical legs 6 form the outer boundary of the frame 2.
- the pulse blow-off spray cleaning device can be placed on an existing cuboid container 8 with this frame 2. In the attached state, the horizontal legs 7, 5 of the cross struts 4 and longitudinal struts 3 of the frame 2 rest on the upper end faces of the container walls 9.
- the vertical legs of the cross struts 4 and the vertical legs 6 of the longitudinal struts 3 run parallel to the outer sides of the container walls 9 (cf. FIG. 3). You can rest on the outside of the container walls 9.
- two medium jet delivery units 12 are suspended.
- a linear slide 19, which rests on the frame 2 and is fastened to the frame 2, is used for fastening (see FIG. 3).
- a traction device is fixed on the linear slide 19.
- a wire rope 10 is used as the traction means, which is guided through four or six deflection rollers 11 (cf. FIGS. 1, 2a and 2b).
- Gears or belt wheels are then used for guidance.
- one of four deflection rollers 11 is rotatably attached to each frame corner (cf. FIGS. 1 and 2a).
- a medium jet delivery unit 12 is attached to each run of the wire rope 10 running along the longitudinal frame strut 3.
- a deflection roller 11 is also attached to each frame corner.
- a further deflection roller 11 is rotatably fastened to the inside on two deflection rollers 11, which are arranged on the same longitudinal half of the frame 2 (cf. FIG. 2b).
- the wire rope 10 is first passed over the first outer deflection roller 11 and then over the second outer deflection roller 11.
- the wire rope 10 extends from the second outer deflection roller 11 back to the first inner primary steering roller 11, which is arranged on the inside on the first outer deflection roller 11.
- the wire rope finally extends from the first inner deflection roller 11 to the second inner deflection roller 11.
- a total of three runs of the wire rope 10 thus run along the corresponding frame longitudinal strut 3.
- At least one linear slide 19 is fastened to the middle run.
- At least one linear slide 19 is also attached to the run on the opposite longitudinal half of the frame 2.
- the drive for the wire rope 10 in the exemplary embodiment further consists of an electric motor 13 which is fastened to a cross strut 4 of the frame 2 near a frame corner.
- the motor axis runs vertically and carries a drive wheel 14 for a rotating traction device.
- a drive chain 16 is used as the traction means.
- other traction means such as a wire rope or a drive belt, can also be used.
- a deflection roller 15 is rotatably attached to the same cross strut 4 as the electric motor 13, close to the corner facing away from it.
- the drive chain 16 is guided over the drive wheel 14 and the deflection roller 15.
- a horizontally extending support plate projecting on the outside and bearing a vertical axis can be attached to the cross strut 4.
- the deflection roller 15 is attached to this axis.
- the electric motor 13 moves the drive chain 16 at a constant speed and in the same direction of rotation. So that the rotating movement of the drive chain
- the wire rope 10 can be converted into a to-and-fro movement of the wire rope 10, the wire rope 10 carries a carrier 17 on the run that runs parallel to the drive chain 16. This driver 17 is connected to the drive chain 16 at the same time. The drive chain 16 moves the driver
- Each medium jet delivery unit 12 is moved back and forth along a longitudinal frame strut 3 between two end positions. One end position is located near a frame corner, the other end position near the opposite frame corner of the respective longitudinal strut 3.
- the objects 20 to be treated are suspended from a product carrier 21 and inserted from above through the central region of the frame 2 into the space between the medium jet delivery units 12.
- the goods carrier 21 can consist, for example, of a rod, on which hooks 23 can be hung, which carry the objects 20 to be treated. In the exemplary embodiment, this rod runs along the longitudinal axis of the frame 2.
- a cover 22 can be arranged above the product carrier 21. In the exemplary embodiment, this cover 22 is gable-shaped. It is connected by vertical struts to the goods carrier 21 and thus also to the bar of the goods carrier. In Fig. 1, the cover 22 and the article carrier 21 are not shown, the connecting struts.
- each medium jet delivery unit 12 consists of a vertically running support rod 24, which is provided with an angle piece 25 in its upper end region.
- the angle piece 25 is fastened with its horizontal leg, for example on a linear slide 19.
- the linear slide 19 is connected to the wire rope 10 by means of a suitable fastening element.
- the nozzle rods 28 have a round cross section. They are preferably made from round bar pieces.
- the round bar pieces are provided with a longitudinal bore and the end faces or the end face of each longitudinal bore are subsequently closed. In this way, rod-shaped hollow bodies with a relatively thick wall can be produced.
- the wall has a plurality of outlet nozzles 29.
- Each outlet nozzle 29 is formed by a radial bore in the wall.
- the outermost section 30 of each bore is flared (see FIG. 6).
- the outlet nozzles 29 must not be too short so that the medium jets are concentrated sufficiently. Therefore, the wall of a nozzle rod 28 also has a certain thickness. Since commercially available pipes have walls that are too thin, they are unsuitable for the production of the nozzle rods 28.
- the conically widened, outer section 30 of each outlet nozzle 29 reduces the swirling of the medium jet at the outer mouth of the nozzle 29. The better the medium jets emerging from the outlet nozzles 29 are bundled, the greater their efficiency.
- the reduction in turbulence also has the additional, positive side effect that the noise emissions from the nozzles 29 become lower.
- the outlet nozzles 29 are arranged in two parallel longitudinal rows (cf. FIGS. 7a to 7d).
- the outlet nozzles 29 of the one row can be arranged offset with respect to the outlet nozzles 29 of the other row (cf. FIGS. 7a and 7b) or also non-offset (cf. FIGS. 7c and 7d).
- By arranging the outlet nozzles 29 in two rows it can be achieved that the medium jets emerging from the outlet nozzles 29 act on the objects 20 to be treated at at least two different angles. This is particularly important in the case of objects 20 with an uneven surface, since this noticeably reduces the likelihood that a point on the surface is always exposed to an unfavorable angle.
- the blow-off, drying or cleaning effect can be improved for uneven surfaces.
- the items to be treated 20 would usually be areas that are oriented perpendicular to the direction of movement of the medium jet delivery units 12. Such surfaces are insufficiently impacted by the medium jets if all medium jets run parallel to these surfaces.
- the arrangement of the outlet nozzles 29 described above means that the medium jets run at different angles with respect to the direction of movement of the medium jet delivery unit 12. As a result, all surfaces of the objects 20 to be treated can be sufficiently impacted by the medium jets (cf. FIG. 8).
- each nozzle rod 28 is connected to a compressed air source 36 via a medium line 31.
- a compressor can serve as the compressed air source 36.
- Each medium line 31 can be opened and closed with its own valve 18.
- the valves 18 are connected to a control device via control cables. With the control device, the opening duration and the opening frequency of each valve can be individually defined.
- the pulse frequency is preferably in a range from 5 to 50 Hertz.
- control cables and medium lines 31 are guided upwards out of the container along the support rod 24.
- containers 8 with closed walls 9 can consequently be used, since outlet openings in the container walls 9 are unnecessary for the control cables and medium lines 31.
- the nozzle rods 28 are arranged in vertical rows. Each row forms a medium jet delivery device 32.
- each medium jet delivery unit 12 has two medium jet delivery devices 32.
- Each medium jet delivery device 32 also comprises four nozzle rods 28.
- the carrier rod 24 and the uppermost nozzle rods 28 protrude from the top of the frame 2. This means that the Cover 22 and the goods carrier 21 are exposed to medium jets.
- the nozzle rods 28 of a medium jet delivery unit 12 can run parallel or obliquely to the carrier rod 24 (cf. FIGS. 4 and 5).
- the angular position of the nozzle rods 28 is parallel with respect to the carrier rod 24.
- the oblique arrangement of the nozzle rods 28 results in an optimal distribution of the medium jets, in particular the compressed air jets, to the objects to be dried. So that the medium jets, in particular the compressed air jets, of two nozzle bars 28 lying next to one another do not overlap, the valves 18 of the two nozzle bars 28 are opened and closed at different times.
- the medium jet delivery units 12 are moved in opposite directions on both sides of the frame, then they intersect at a specific point. If all of the nozzle rods 28 now run vertically, then when air is used as the medium, the compressed air jets directed against one another meet. This will at least partially remove the air pressure. This effect can be counteracted by angling the nozzle rods 28 with respect to the vertical. As a result, the areas in which the compressed air jets collide exactly can be significantly reduced, which leads to an increase in efficiency.
- the air pressure of the medium jet delivery unit 12 can be changed separately. This can be achieved, for example, by placing a medium jet delivery unit in the compressed air line 12 feeds, installs a plurality of valves 35 connected in parallel (cf. FIG. 1). Either valves with an upstream pressure reducer or adjustable pressure reducing valves are used for this. Solenoid-controlled valves are preferably used, which can be operated electrically. Different pressures are set using the valves. 1 shows, among other things, a diagram of a possible valve arrangement. In this case, four valves 35 are connected in parallel to each other. The first valve 35 reduces, for example, the pressure to 4 bar, the second to 3 bar, the third to 2 bar and the fourth to 1 bar. The respectively open valve 35 determines the pressure of the air which is directed into the medium jet delivery device 32 of the medium jet delivery unit 12. The air pressure can thus be adapted to the shape and size of the objects 20 to be dried.
- the medium valves 37, 38 or 39 By opening the medium valves 37, 38 or 39, media other than air can be fed to the nozzle rods 28.
- four different media can be fed to the nozzle rods 28.
- a first medium valve 37 By opening a first medium valve 37, a first medium, e.g. Rinse water, the nozzle rods 28 fed.
- a second medium valve 38 When opening a second medium valve 38, a second medium, e.g. Steam fed to the nozzle rods 28.
- a third medium valve 39 When a third medium valve 39 is opened, a third medium, e.g. Cleaning liquid, the nozzle rods 28 fed.
- the medium pressure can be adapted to the objects 20 to be treated by upstream (not shown) pressure reducers. The residual liquids remaining in the medium lines and nozzle rods 28 are blown out with low air pressure. The surfaces of the objects 20 can then be blown off with a normal air pressure.
- Liquid adhering to the surfaces of objects 20 can be blown off and possibly reused.
- the carryover and consumption are minimized.
- spot-free drying is achieved. If necessary, the drying effect can be enhanced with warm, circulating air.
- This first step can be followed by a second step if necessary.
- this second step for example, rinse water is sprayed onto the surfaces of the objects 20 and then immediately blown off again. This process can be repeated until the parts are clean and / or stain-free dry. It is e.g. it is also possible to spray the parts with steam in an intermediate step in order to achieve an additional cleaning effect.
- cleaning work can also be carried out exclusively.
- a cleaning liquid is sprayed onto the objects 20.
- the cleaning liquid is then blown off and returned to the storage tank, for example.
- clean rinse water is sprayed onto the objects.
- the rinse water is also blown off immediately. This process can be repeated until the parts are clean and / or dry without stains.
- there is also the possibility of treating the objects 20 with different cleaning liquids each cleaning liquid being completely removed with rinsing water before the next cleaning liquid is sprayed on.
- the proposed pulse blow-off spray cleaning device 1 has significant advantages over the known pulse blow dryers:
- the same device can be used to wet, rinse, clean and / or treat surfaces with different liquids (for example water, cleaning liquid, etc.).
- the proposed pulse blow-off spray cleaning device 1 is not firmly connected to a container, it can be placed on any container. However, it can also be used in an existing drying oven, for example. They can also be installed in a crane (transport device). Furthermore, the treatment times when using the proposed pulse blow-off spray cleaning device 1 are shorter than in known pulse blow dryers. Because two or more medium jet delivery units 12 can be arranged on each frame side, the time required for the medium jets, in particular the compressed air jets, to pass all the objects 20 to be dried can be reduced by at least 50%.
- the efficiency is significantly higher than in the case of the improved nozzles 29, the double nozzle rows, the double medium jet dispensers 32 per medium jet dispenser 12 and the oblique arrangement of the nozzle rods 28 conventional pulse blow dryers, less energy is required for the same drying effect, or a greater drying effect can be achieved with the same amount of energy.
- the proposed pulse blow-off spray cleaning device 1 thanks to the vertical arrangement of the medium jet delivery unit 12, a simpler construction can be achieved than with conventional pulse blow dryers with horizontally arranged medium jet delivery devices.
- the medium lines and the control cables can namely be led out of the top of the container.
- the proposed pulse blow-off spray cleaning device 1 is therefore less expensive than the known pulse blow dryers in terms of production, time and maintenance. It also takes up less space. Thanks to these advantages, it will be of great interest to the market.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning In General (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH201596 | 1996-08-16 | ||
CH2015/96 | 1996-08-16 | ||
CH201596A CH691927A5 (de) | 1996-08-16 | 1996-08-16 | Vorrichtung zum gepulsten Ausgeben eines Mediums zur Behandlung von Oberflächen. |
PCT/CH1997/000261 WO1998008040A1 (de) | 1996-08-16 | 1997-07-03 | Vorrichtung zum gepulsten ausgeben eines mediums zur behandlung von oberflächen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0918974A1 true EP0918974A1 (de) | 1999-06-02 |
EP0918974B1 EP0918974B1 (de) | 2000-02-02 |
Family
ID=4223913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97928096A Expired - Lifetime EP0918974B1 (de) | 1996-08-16 | 1997-07-03 | Vorrichtung zum gepulsten ausgeben eines mediums zur behandlung von oberflächen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0918974B1 (de) |
CH (1) | CH691927A5 (de) |
DE (1) | DE59701099D1 (de) |
WO (1) | WO1998008040A1 (de) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3435538A (en) * | 1967-03-08 | 1969-04-01 | Lawrence W Hargett | Web drying apparatus having multiple hot air nozzles and exhaust outlets |
EP0486711B1 (de) * | 1990-11-19 | 1994-08-03 | Ernst Eichholzer | Vorrichtung zum Abblasen einer Flüssigkeit von einem Gegenstand |
DE4328199C1 (de) * | 1993-08-21 | 1994-10-13 | Duerr Gmbh & Co | Verfahren und Einrichtung zum Trocknen eines nach einer Bearbeitung mit einer Reinigungsflüssigkeit gereinigten Werkstücks |
DE4336085A1 (de) * | 1993-10-22 | 1995-04-27 | Atotech Deutschland Gmbh | Verfahren zum Entfernen von Flüssigkeit von der Oberfläche eines benetzten Behandlungsgutes und Anordnung zur Durchführung des Verfahrens |
-
1996
- 1996-08-16 CH CH201596A patent/CH691927A5/de not_active IP Right Cessation
-
1997
- 1997-07-03 DE DE59701099T patent/DE59701099D1/de not_active Expired - Fee Related
- 1997-07-03 EP EP97928096A patent/EP0918974B1/de not_active Expired - Lifetime
- 1997-07-03 WO PCT/CH1997/000261 patent/WO1998008040A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9808040A1 * |
Also Published As
Publication number | Publication date |
---|---|
CH691927A5 (de) | 2001-11-30 |
WO1998008040A1 (de) | 1998-02-26 |
DE59701099D1 (de) | 2000-03-09 |
EP0918974B1 (de) | 2000-02-02 |
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