EP0594916A1 - Méthode et dispositif pour le nettoyage de surfaces, en particulier de maçonnerie - Google Patents

Méthode et dispositif pour le nettoyage de surfaces, en particulier de maçonnerie Download PDF

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Publication number
EP0594916A1
EP0594916A1 EP92810808A EP92810808A EP0594916A1 EP 0594916 A1 EP0594916 A1 EP 0594916A1 EP 92810808 A EP92810808 A EP 92810808A EP 92810808 A EP92810808 A EP 92810808A EP 0594916 A1 EP0594916 A1 EP 0594916A1
Authority
EP
European Patent Office
Prior art keywords
blasting material
blasting
dirt particles
pressure jet
line
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
Application number
EP92810808A
Other languages
German (de)
English (en)
Other versions
EP0594916B1 (fr
Inventor
Erich Bruhin
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.)
ALFREDO PIATTI AG BAUUNTERNEHMUNG
Original Assignee
ALFREDO PIATTI AG BAUUNTERNEHMUNG
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
Application filed by ALFREDO PIATTI AG BAUUNTERNEHMUNG filed Critical ALFREDO PIATTI AG BAUUNTERNEHMUNG
Priority to EP92810808A priority Critical patent/EP0594916B1/fr
Priority to DE59208832T priority patent/DE59208832D1/de
Priority to AT92810808T priority patent/ATE157292T1/de
Priority to NO933761A priority patent/NO933761L/no
Priority to FI934631A priority patent/FI934631A7/fi
Publication of EP0594916A1 publication Critical patent/EP0594916A1/fr
Application granted granted Critical
Publication of EP0594916B1 publication Critical patent/EP0594916B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C11/00—Selection of abrasive materials or additives for abrasive blasts
    • 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
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/047—Discharge apparatus, e.g. electrostatic spray guns using tribo-charging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts

Definitions

  • the present invention relates to a method and a device for cleaning surfaces, in particular masonry, according to the preamble of claims 1 and 5, respectively.
  • the blasting material is charged electrostatically.
  • a separation of the dirt particles from the blasting material is possible without the use of cleaning liquids and solvents.
  • the blasting material can be charged in a simple manner by "frictional electricity".
  • the effect is exploited here that when an insulating material is intimately touched with a different insulating material or an electrical conductor, charges of different signs are spontaneously formed.
  • Glass beads or glass split are preferably used as the blasting material. Glass split has a greater abrasive effect on the surface to be cleaned. Sintered glass beads are particularly preferably used as blasting material. These have a hard surface and nevertheless a certain elasticity, so that the surface to be cleaned can be treated extremely gently and the blasting material does not break when it hits the surface.
  • FIG. 2 shows a cross section of the pressure jet line 16.
  • This consists of a hose made of rubber-like material with a wave-like inner jacket surface 20. This is by rib-like projections and groove-like recesses which alternately adjoin one another in the circumferential direction formed, which run in the longitudinal direction of the pressure jet line 16 spiral or helical.
  • a swirl is imparted to the compressed air flow and the blasting material flow that is also transported, with the result that the blasting material 12 is pushed outward in the radial direction onto the outer surface 20.
  • the blasting material 20 comes into intimate contact with the pressure blasting line 16, which leads to the spontaneous formation of charges of different polarity in the blasting material 12 and in the pressure blasting line 16.
  • the pressure jet line 16 has a length of at least a few meters, preferably 10 to 20 m.
  • the charge generated in the pressure jet line 16 can flow off to earth via a corresponding connection.
  • the blasting lance 18 has a nozzle-like opening through which the compressed air jet emerges together with the blasting material 12 and the blasting material 12 which has a swirl is thrown onto the surface 22 of the facade 24 to be cleaned.
  • the jet lance 18 is guided by an operator who works in a work platform 26.
  • the work platform 26 is only open towards the facade 24 and is otherwise closed like a tent on all sides. It has a rust-like intermediate floor 28 for the operator.
  • the work platform 26 is provided with a circumferential inflatable bellows 30 in order to be able to fit the work platform 26 snugly against the surface 22 to be cleaned.
  • a clean room 36 is separated from the work area 32 of the work platform 26 by a partition 34.
  • a fan unit 38 is present in order to generate a negative pressure in the work platform 26.
  • the air drawn in through the intermediate floor 28 towards the clean room 36 is passed through an air filter unit 40 in order to retain dust and dirt particles.
  • the air filter unit 40 is periodically cleaned from the filter cake in a known manner, which is indicated by wavy arrows 40 '.
  • the air flow generated by the fan unit 38 is indicated by arrows 38 '.
  • Ambient air is between the bellows 30 and the one to be cleaned Facade 24 is sucked into the working space 32 and passes through the intermediate floor 28 into the underlying collecting space 42 of the working platform 26 and from there through the intermediate floor 28 and the air filter unit 40 into the clean room 36. From there, the cleaned air passes through the fan unit 38 to the Surroundings.
  • the collecting space 42 is closed by a funnel-like work platform floor 44, from which a grounded suction pipe 46 having steel pipes leads away. While the free cross section of the pressure jet line 16 has a diameter of approximately 0.02 to 0.05 m, the flow cross section of the suction line 46 is substantially larger, the inner diameter is approximately 0.15 to 0.25 m.
  • the suction device 48 also has a fan 50, which acts as a vacuum source and to which a filter device 52 is connected upstream.
  • the suction line 46 opens into a cleaning device 54 for the used blasting material 12, which is connected on the output side to the input side of the filter device 52.
  • the cleaning device 54 has a separating device 56 acting as a gravity separator, below which a screening device 58 is arranged.
  • the suction line 46 opens laterally in the upper end region. Separated, approximately vertical and mutually overlapping partition walls 62 are arranged in the interior of the boiler, so that the air flow introduced into the boiler 60 through the suction line 46 is directed in a downward direction and is deflected around the lower end of the first partition 62 and between the two Partitions 62, 62 'run upwards in order to be deflected around the second partition 62' in the upper end region of the boiler 60 and then fed to the filter device 52.
  • a cyclone separator 63 indicated by a dash-dot line in FIG. 1 and in cross-section in FIG. 3 is preferably present between the wall of the boiler 60 and the first partition wall 62, thus the deflection around the lower end of the partition wall 62.
  • the boiler 60 is closed at the bottom by a funnel-like constriction, in the outlet of which a cellular wheel sluice 64 is provided. This ensures that on the one hand the flow conditions in the separating device 56 are not disturbed by the screening device 58 and on the other hand the screening device 58 is not disturbed by the flow in the separating device 56.
  • the blasting material 20 separated out in the separating device 56 falls onto a first sieve arrangement 66 of the screening plant 58.
  • the blasting material 12 that does not pass through the sieve arrangement 66 is fed to a container 68 for reusable blasting material 12.
  • the blasting material passing through the first sieve arrangement 66 falls onto a more closely meshed second sieve arrangement 66 'and, if it does not pass through this sieve arrangement 66', is fed to a second container 68 'for non-reusable blasting material 12.
  • the reusable that gets into the container 68 Blasting material 12 is then fed back to the pressure vessel 10, as is indicated by a container 68 shown in broken lines.
  • the air flow carried to the filter device 52 and carrying the dirt particles is passed through filter lamellae 70 in order to retain the dirt particles and then to release the cleaned air to the environment.
  • the filter lamella 70 preferably act as a surface filter.
  • the filter cake that forms on it is shaken off the filter lamella 70 by means of compressed air pulses at certain times, so that it falls into dust bucket 74 as indicated by the arrows 72.
  • the suction device 48 and cleaning device 54 are advantageously installed on the bridge of a truck or a trailer.
  • the working platform 26 is preferably held by means of a crane.
  • the cover hood 76 is provided with a bristle ring 78.
  • the fan 50 and the screening plant 58 are operated at intervals; the fan unit 38 remains switched on.
  • the method and the device according to the invention function practically without releasing dust to the environment, since the dirt particles adhere to the blasting material 12, at least until it no longer hovers freely in the air.
  • the subsequent separation of blasting material 12 and dirt particles and the reprocessing of the reusable blasting material 12 is carried out dry, without the use of liquids and solvents, and consequently extremely environmentally friendly.
  • the blasting material 12 which can no longer be reused in the second container 68 'can be melted down and used further in this way.
  • the only effective waste is the dirt particles detached from the surface 22 to be cleaned.
  • the method according to the invention is also suitable for cleaning surfaces from other materials, such as concrete, wood, metal, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Saccharide Compounds (AREA)
  • Networks Using Active Elements (AREA)
  • Picture Signal Circuits (AREA)
EP92810808A 1992-10-21 1992-10-21 Méthode et dispositif pour le nettoyage de surfaces, en particulier de maçonnerie Expired - Lifetime EP0594916B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP92810808A EP0594916B1 (fr) 1992-10-21 1992-10-21 Méthode et dispositif pour le nettoyage de surfaces, en particulier de maçonnerie
DE59208832T DE59208832D1 (de) 1992-10-21 1992-10-21 Verfahren und Vorrichtung zum Reinigen von Oberflächen, insbesondere von Mauerwerk
AT92810808T ATE157292T1 (de) 1992-10-21 1992-10-21 Verfahren und vorrichtung zum reinigen von oberflächen, insbesondere von mauerwerk
NO933761A NO933761L (no) 1992-10-21 1993-10-19 Fremgangsmåte og innretning for rengjöring av overflater, særlig på murverk
FI934631A FI934631A7 (fi) 1992-10-21 1993-10-20 Menetelmä ja laite pintojen pesemiseksi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92810808A EP0594916B1 (fr) 1992-10-21 1992-10-21 Méthode et dispositif pour le nettoyage de surfaces, en particulier de maçonnerie

Publications (2)

Publication Number Publication Date
EP0594916A1 true EP0594916A1 (fr) 1994-05-04
EP0594916B1 EP0594916B1 (fr) 1997-08-27

Family

ID=8212009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810808A Expired - Lifetime EP0594916B1 (fr) 1992-10-21 1992-10-21 Méthode et dispositif pour le nettoyage de surfaces, en particulier de maçonnerie

Country Status (5)

Country Link
EP (1) EP0594916B1 (fr)
AT (1) ATE157292T1 (fr)
DE (1) DE59208832D1 (fr)
FI (1) FI934631A7 (fr)
NO (1) NO933761L (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1003398C2 (nl) * 1996-06-21 1997-12-23 Delwi Ontwikkelingen B V Werkwijze en materiaal voor het reinigen van binnenwanden van kanaalvormige ruimten.
DE19747838A1 (de) * 1997-10-19 1999-04-22 Gerard Pieper Verfahren und Vorrichtung zum trockenen Entfernen von Beschichtungen, Graffiti oder sonstigen oberflächlichen Verunreinigungen
GB2315686B (en) * 1996-08-01 2001-01-17 Brian John Mcbride Glass
GB2362314A (en) * 2000-05-16 2001-11-21 Harold Walmsley Method and apparatus for cleaning up graffiti

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007034869A1 (de) * 2007-07-24 2009-01-29 Christian Schulte Fassadenbehandlung
CN110103153B (zh) * 2019-06-17 2020-12-11 蓬莱市百斯特铝业有限公司 一种铝合金材料表面处理装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982003573A1 (fr) * 1981-04-24 1982-10-28 Ruud Jan Pulverisateur pouvant donner une charge electrostatique
DE4003324A1 (de) * 1990-02-05 1991-08-08 Behas Sandstrahlsysteme Gmbh Strahlverfahren zur behandlung von gesteinsoberflaechen
DE4104543A1 (de) * 1990-02-14 1991-09-12 Mitsubishi Electric Corp Mit feinen gefrierteilchen arbeitende reinigungsvorrichtung
WO1991018712A2 (fr) * 1990-06-05 1991-12-12 Siemens Aktiengesellschaft Procede et dispositif pour la decontamination de surfaces contaminees radioactives

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982003573A1 (fr) * 1981-04-24 1982-10-28 Ruud Jan Pulverisateur pouvant donner une charge electrostatique
DE4003324A1 (de) * 1990-02-05 1991-08-08 Behas Sandstrahlsysteme Gmbh Strahlverfahren zur behandlung von gesteinsoberflaechen
DE4104543A1 (de) * 1990-02-14 1991-09-12 Mitsubishi Electric Corp Mit feinen gefrierteilchen arbeitende reinigungsvorrichtung
WO1991018712A2 (fr) * 1990-06-05 1991-12-12 Siemens Aktiengesellschaft Procede et dispositif pour la decontamination de surfaces contaminees radioactives

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPIL Week 8846, Derwent Publications Ltd., London, GB; AN 88-329282 & SU-A-1 395 467 (EFIMOV) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1003398C2 (nl) * 1996-06-21 1997-12-23 Delwi Ontwikkelingen B V Werkwijze en materiaal voor het reinigen van binnenwanden van kanaalvormige ruimten.
GB2315686B (en) * 1996-08-01 2001-01-17 Brian John Mcbride Glass
DE19747838A1 (de) * 1997-10-19 1999-04-22 Gerard Pieper Verfahren und Vorrichtung zum trockenen Entfernen von Beschichtungen, Graffiti oder sonstigen oberflächlichen Verunreinigungen
DE19747838C2 (de) * 1997-10-19 2001-07-12 Gp Granulate Pneumatic Geraete Verfahren und Vorrichtung zum trockenen Entfernen von Beschichtungen, Graffiti oder sonstigen oberflächlichen Verunreinigungen
GB2362314A (en) * 2000-05-16 2001-11-21 Harold Walmsley Method and apparatus for cleaning up graffiti

Also Published As

Publication number Publication date
FI934631A0 (fi) 1993-10-20
NO933761L (no) 1994-04-22
FI934631L (fi) 1994-04-22
DE59208832D1 (de) 1997-10-02
NO933761D0 (no) 1993-10-19
EP0594916B1 (fr) 1997-08-27
FI934631A7 (fi) 1994-04-22
ATE157292T1 (de) 1997-09-15

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