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EP0990487A1 - Vorrichtung zur Reinigung von kontaminierten Oberflächen mit Hilfe eines Strahls, der aus Luft, feinkörnigem Strahlmittel und einer Flüssigkeit zusammengesetzt ist - Google Patents

Vorrichtung zur Reinigung von kontaminierten Oberflächen mit Hilfe eines Strahls, der aus Luft, feinkörnigem Strahlmittel und einer Flüssigkeit zusammengesetzt ist Download PDF

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Publication number
EP0990487A1
EP0990487A1 EP99810874A EP99810874A EP0990487A1 EP 0990487 A1 EP0990487 A1 EP 0990487A1 EP 99810874 A EP99810874 A EP 99810874A EP 99810874 A EP99810874 A EP 99810874A EP 0990487 A1 EP0990487 A1 EP 0990487A1
Authority
EP
European Patent Office
Prior art keywords
mixing chamber
air
chamber
mixture
fine
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
EP99810874A
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English (en)
French (fr)
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EP0990487B1 (de
Inventor
Patrick Loubeyre
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Individual
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Individual
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Filing date
Publication date
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Publication of EP0990487A1 publication Critical patent/EP0990487A1/de
Application granted granted Critical
Publication of EP0990487B1 publication Critical patent/EP0990487B1/de
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
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0084—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a mixture of liquid and gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
    • B24C5/04—Nozzles therefor

Definitions

  • the present invention relates to a device for surface decontamination, using a compound jet pressurized air, spray material to fine grains and a liquid, including a mixture in the form of a body of revolution fed axially by said liquid and obliquely and eccentrically to the axis of said chamber with the mixture of air and fine-grained material, said chamber communicating with a nozzle of spray.
  • the nozzle on this installation has a very important role because its construction and its geometry allow to give the throw a rotational movement around an axis, which allows to reproduce in a way a movement of friction on the surface to be decontaminated.
  • the nozzle is an element which undergoes wear, if only by the presence of fine-grained material and pressure to which this material is subject. We use in principle of materials with high resistance abrasion by said material. However, after a number of uses, it is necessary to replace said nozzle so that the efficiency of the jet does not is not diminished.
  • the present invention is directed to a nozzle in which the displacement of the aggregate is ensured by air under pressure, the liquid having more of a function comfort, i.e. preventing the dust produced during inconvenient decontamination, on the one hand, the user and, on the other hand, pollutes the ambient air. In certain situations, we can without diminishing the desired effect, interrupt the water supply.
  • the object of the present invention is to provide a new nozzle to overcome drawbacks mentioned above.
  • the decontamination device is characterized in that said device consists of an external body provided with a cylindrical bore housing the mixing chamber, a socket having an approximately cylindrical shape provided with means for being assembled to said body exterior and housing a second body in a bore of revolution constituting said spray nozzle, that said outer body is provided with a first feed inlet in the axial direction of the liquid mixing chamber, and a second inlet whose axis is oblique and offset from to that of the mixing chamber for the entry of the mixture of air and fine-grained material, that said second intake is located so that the mixture air and fine-grained material reaches the wall interior of the mixing chamber near its end located upstream and it is offset by relative to the axis of the mixing chamber to the left when we are on the northern hemisphere and to the right when we are on the southern hemisphere so that the jet air and projection material benefits from the effect of Coriolis.
  • the advantages of the nozzle according to the invention are the fact that it is made up of four main elements, know the outer body receiving the chamber of mixture, the sleeve that protects the nozzle itself which is also a body of revolution which are individually interchangeable, allowing to replace only the worn or damaged part damage instead of replacing the entire device as is the case nowadays.
  • the fact that the air and projection material jet fine grain falls on the end of the chamber allows to use the entire length of the room for him give the desired movement in order to obtain a maximum efficiency at the outlet of the nozzle, contrary to what is done in the devices using liquid as a means of transporting grains.
  • the Coriolis allows to obtain a maximum kinetic energy at the exit of the nozzle therefore a great efficiency. It's obvious that this movement must be done either to the left or to right, depending on the Earth's hemisphere on which one is.
  • the bedroom can be reused if it is turned by example of 180 °, thus doubling the life of the mixing chamber which is an economy substantial. It would also be possible to adjust the life of the room if we turn the room 120 °, which allows an even more substantial saving.
  • the mixing chamber consists of an upstream cylindrical part and a tapered part downstream going in narrowing, this which allows the jet to pass inside the chamber mixing to a section whose diameter weakens to reach the next element which is the nozzle itself.
  • the admission allowing the supply of air and grain material includes a rod made of a material that resists abrasion which is screwed into a body tapping outside and it is surrounded by a sleeve made of preferably in plastic and on this sleeve is fixed by thread or other means the pipe for the supply of air and fine grain material.
  • This construction also allows to have a admission which resists abrasion due to fine-grained material. We can thus replace this rod when worn without having to replace the entire intake system and this allows also to have an item whose cost is not very high, which would be the case if this admission was made from a single piece of durable material abrasion.
  • the mixture also ends on its outer part in tapering cone collaborating with the second body of revolution which has its upstream end a surface complementary allowing by interlocking of form a continuous channel between the mixing chamber and the outlet nozzle.
  • the wall of the mixing chamber includes a conical part upstream going in narrowing inward of the chamber, followed by a cylindrical part, followed by a conical part going in narrowing, that the downstream end of said mixing chamber has an annular surface through which it comes lean on an annular surface corresponding to the second body of revolution.
  • Figure 1 is an axial sectional view of the device according to the present invention.
  • Figure 2 is an axial sectional view only of the mixing chamber and the second body of revolution according to a second variant.
  • the device according to the present invention shown in the figure comprises an outer body 1 provided with a bore 2 inside which is disposed a body of revolution 5 constituting the mixing chamber.
  • the body 1 is provided with an axial threaded passage 13 for the connection of a liquid supply pipe which preferably water, from a second tapping 3 arranged so as to form an angle of about 25 ° to 30 ° with the axis of chamber 5 and the axis of this bore tapped 3 is also slightly offset from the axis of chamber 5 from about 1 to 4 mm to the left of the axis of the mixing chamber with respect to the direction of movement of the jet in order to benefit from the Coriolis effect. If we are in the hemisphere South, this movement will have to be to the right.
  • a threaded rod 11 which is screwed there.
  • Rod 11 is made of abrasion resistant material.
  • a sleeve 12 made of a plastic material provided on its upper part with a device for joining to a conduit.
  • the device can be a bayonet or a thread or any other usual assembly device.
  • the conduit thus formed allows the supply of air and material fine grain from chamber 5.
  • Chamber 5 is arranged inside the body 1, so that the mixture including air and fine grain material comes to touch the wall upstream of the chamber before keep moving inside the room with a helical movement mainly thanks to the eccentric and oblique position of intake 3 and well heard the push of the liquid.
  • a socket 7 is provided with a bore 8 is fixed to the end of the body 1 by any conventional means 4, the simplest being screwed, a seal 14 ensuring sealing.
  • a body of revolution 9 having a passage having a diameter of the order of 10 mm.
  • This body 9 presents in its upstream end a conical surface 10 coming marry the conical end 6 of chamber 5. So, we obtain an assembly allowing to have a passage between the mixing chamber 5 and the body 8 which is continuous ensuring that the jet will be free of protrusions that could affect the quality and jet efficiency.
  • this device is the fact that it is made up of multiple separate elements that can be replaced individually either for wear or to modify the dimensions, for example of the body 9 if the fine grain product should be used with nozzle of different dimensions.
  • the mixture 5 can be made of carbide, body 9 of sintered alumina, the outer body 1 of aluminum or made of elastomer, Nylon, vinyl etc.
  • Socket 7 could also be made of elastomer, vinyl, nylon etc.
  • the chamber 50 has downstream a conical part 51 facilitating the access of air jet and grain material ends followed by a cylindrical part 52 and ending by a new conical part 54.
  • the downstream end of the chamber has an annular surface 55 by which the chamber 50 rests on a surface correspondent 91 of the second body of revolution 90.
  • the internal diameter of this body 90 being smaller that the smallest diameter of the chamber 50, part conical 92 upstream of the body 90 makes it possible to form a continuous passage without abrupt change of section, which would result in turbulence and a wear of the elements present.
  • This configuration of parts 50 and 90 avoids sharp ends which may break due to shock from the arrival of the jet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
EP99810874A 1998-09-29 1999-09-28 Vorrichtung zur Reinigung von kontaminierten Oberflächen mit Hilfe eines Strahls, der aus Luft, feinkörnigem Strahlmittel und einer Flüssigkeit zusammengesetzt ist Expired - Lifetime EP0990487B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9812171A FR2783735B1 (fr) 1998-09-29 1998-09-29 Dispositif pour la decontamination des surfaces au moyen d'un jet compose d'air, d'une matiere de projection a grains fins et d'un liquide
FR9812171 1998-09-29

Publications (2)

Publication Number Publication Date
EP0990487A1 true EP0990487A1 (de) 2000-04-05
EP0990487B1 EP0990487B1 (de) 2002-07-10

Family

ID=9530975

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810874A Expired - Lifetime EP0990487B1 (de) 1998-09-29 1999-09-28 Vorrichtung zur Reinigung von kontaminierten Oberflächen mit Hilfe eines Strahls, der aus Luft, feinkörnigem Strahlmittel und einer Flüssigkeit zusammengesetzt ist

Country Status (6)

Country Link
US (1) US6390899B1 (de)
EP (1) EP0990487B1 (de)
AT (1) ATE220362T1 (de)
DE (1) DE69902082T2 (de)
ES (1) ES2182472T3 (de)
FR (1) FR2783735B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6592595B1 (en) * 2000-03-31 2003-07-15 Edge Systems Corporation Microdermabrasion and suction massage apparatus and method
KR100419299B1 (ko) * 2001-02-28 2004-02-19 (주)케이.씨.텍 표면 세정을 위한 승화성 고체 입자 분사용 노즐
US20050037697A1 (en) * 2003-08-14 2005-02-17 Nord Lance G. Abrasive media blast nozzle
KR20040101948A (ko) * 2004-05-31 2004-12-03 (주)케이.씨.텍 표면세정용 승화성 고체입자 분사용 노즐 및 이를 이용한 세정방법
US8353741B2 (en) * 2009-09-02 2013-01-15 All Coatings Elimination System Corporation System and method for removing a coating from a substrate
KR101220608B1 (ko) * 2010-06-09 2013-01-10 주식회사 포스코 스케일 제거장치
CN102430987B (zh) * 2011-10-28 2015-01-28 克拉玛依市金牛工程建设有限责任公司 后混合式自激振荡脉冲磨料喷嘴及其生产方法
US11267101B2 (en) 2017-05-26 2022-03-08 Arborjet Inc. Abrasive media blasting method and apparatus
CN113618644A (zh) * 2021-07-29 2021-11-09 常州中车汽车零部件有限公司 一种手工抛丸用工装喷头及提升涡轮壳流道质量的方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH194519A (de) * 1936-11-21 1937-12-15 Rhein Ruhr Maschinenvertrieb I Düse für körniges Gut.
DE3204861A1 (de) * 1982-02-11 1983-08-25 Johan 8000 München Szücs Verfahren und vorrichtung zum reinigen von fassaden oder dgl.
EP0110529A2 (de) * 1982-10-22 1984-06-13 Flow Industries Inc. Flüssigkeitsschleuderstrahl mit grosser Geschwindigkeit
DE3708608A1 (de) * 1986-08-14 1988-02-18 Robomatix Ltd Hochdruck-wasserstrahlschneidkopf
DE4002787A1 (de) * 1990-01-31 1991-08-01 Eichbauer Fritz Vorrichtung zum reinigen von oberflaechen
WO1997009152A1 (es) * 1995-09-08 1997-03-13 Teodoro San Jose Aguilar Boquillas de proyeccion para chorreo abrasivo

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US4218855A (en) * 1978-12-08 1980-08-26 Otto Wemmer Particulate spray nozzle with diffuser
US4253610A (en) * 1979-09-10 1981-03-03 Larkin Joe M Abrasive blast nozzle
DE3113028C2 (de) * 1981-04-01 1983-10-13 Gkss - Forschungszentrum Geesthacht Gmbh, 2054 Geesthacht Vorrichtung zur Oberflächenbehandlung von Unterwasserbauwerken und Schiffen
US4587772A (en) * 1981-05-13 1986-05-13 National Research Development Corporation Dispenser for a jet of liquid bearing particulate abrasive material
US4648215A (en) 1982-10-22 1987-03-10 Flow Industries, Inc. Method and apparatus for forming a high velocity liquid abrasive jet
US4545157A (en) * 1983-10-18 1985-10-08 Mccartney Manufacturing Company Center feeding water jet/abrasive cutting nozzle assembly
DE3469145D1 (en) * 1984-08-14 1988-03-10 Johan Szucs Stone and metal cleaning system
US4711056A (en) * 1984-09-27 1987-12-08 Libbey-Owens-Ford Co. Abrasive fluid jet radius edge cutting of glass
US4945688A (en) * 1985-10-22 1990-08-07 Electric Power Research Institute, Inc. Nozzle for entraining abrasive granules within a high pressure fluid jet and process of using same
US4666083A (en) * 1985-11-21 1987-05-19 Fluidyne Corporation Process and apparatus for generating particulate containing fluid jets
US4815241A (en) * 1986-11-24 1989-03-28 Whitemetal Inc. Wet jet blast nozzle
US5036631A (en) * 1988-03-09 1991-08-06 Inventec, Inc. Sand blast nozzle
US5054249A (en) * 1988-11-23 1991-10-08 Rankin George J Method and apparatus for liquid-abrasive blast cleaning
US5099619A (en) * 1989-08-07 1992-03-31 Rose Leo J Pneumatic particulate blaster
US5018670A (en) * 1990-01-10 1991-05-28 Possis Corporation Cutting head for water jet cutting machine
US5779523A (en) * 1994-03-01 1998-07-14 Job Industies, Ltd. Apparatus for and method for accelerating fluidized particulate matter
US5785582A (en) * 1995-12-22 1998-07-28 Flow International Corporation Split abrasive fluid jet mixing tube and system
US6042458A (en) * 1996-05-31 2000-03-28 Cold Jet, Inc. Turn base for entrained particle flow
US5975996A (en) * 1996-07-18 1999-11-02 The Penn State Research Foundation Abrasive blast cleaning nozzle
US5782673A (en) * 1996-08-27 1998-07-21 Warehime; Kevin S. Fluid jet cutting and shaping system and method of using
FR2753643B1 (fr) 1996-09-24 1998-12-04 Dispositif de commande d'une installation de nettoyage de surfaces contaminees

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH194519A (de) * 1936-11-21 1937-12-15 Rhein Ruhr Maschinenvertrieb I Düse für körniges Gut.
DE3204861A1 (de) * 1982-02-11 1983-08-25 Johan 8000 München Szücs Verfahren und vorrichtung zum reinigen von fassaden oder dgl.
EP0110529A2 (de) * 1982-10-22 1984-06-13 Flow Industries Inc. Flüssigkeitsschleuderstrahl mit grosser Geschwindigkeit
DE3708608A1 (de) * 1986-08-14 1988-02-18 Robomatix Ltd Hochdruck-wasserstrahlschneidkopf
DE4002787A1 (de) * 1990-01-31 1991-08-01 Eichbauer Fritz Vorrichtung zum reinigen von oberflaechen
WO1997009152A1 (es) * 1995-09-08 1997-03-13 Teodoro San Jose Aguilar Boquillas de proyeccion para chorreo abrasivo

Also Published As

Publication number Publication date
EP0990487B1 (de) 2002-07-10
ATE220362T1 (de) 2002-07-15
ES2182472T3 (es) 2003-03-01
DE69902082T2 (de) 2003-02-06
FR2783735A1 (fr) 2000-03-31
FR2783735B1 (fr) 2000-12-15
US6390899B1 (en) 2002-05-21
DE69902082D1 (de) 2002-08-14

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