WO1997009152A1 - Ajutages pour projeter un jet abrasif - Google Patents

Ajutages pour projeter un jet abrasif Download PDF

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Publication number
WO1997009152A1
WO1997009152A1 PCT/ES1996/000167 ES9600167W WO9709152A1 WO 1997009152 A1 WO1997009152 A1 WO 1997009152A1 ES 9600167 W ES9600167 W ES 9600167W WO 9709152 A1 WO9709152 A1 WO 9709152A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
cylinder
abrasive
sand
nozzles
Prior art date
Application number
PCT/ES1996/000167
Other languages
English (en)
Spanish (es)
Inventor
Teodoro San Jose Aguilar
Original Assignee
Teodoro San Jose Aguilar
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
Priority claimed from ES9501760A external-priority patent/ES2127665B1/es
Application filed by Teodoro San Jose Aguilar filed Critical Teodoro San Jose Aguilar
Publication of WO1997009152A1 publication Critical patent/WO1997009152A1/fr

Links

Classifications

    • 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 first one uses a mouthpiece made entirely of Boron Carbide, which although it has a remarkable duration in working hours, instead its price is so high that the hour-to-work price nozzle ratio is too short.
  • the second option manufactures the nozzle entirely in a piece of Stainless Steel, although this nozzle has a lower cost, it also has a short duration, so that the working time-price ratio is very low.
  • the present invention relates to a new nozzle design or prototype for wet or dry sandblasting devices, for high and low pressure machines, and cold or heat work.
  • the main problem we face is to make the nozzle at a very low price, and with many hours of work.
  • the nozzle object of this patent is composed of two hollow cylinders and totally symmetrical with respect to its longitudinal axis (as it appears in the drawings), the inner cylinder (l), (Fig-1) is made of a very hard material to abrasion (Boron Carbide, Tungsten Carbide, Alumina, Stainless Steel, etc.), through which wet or dry sand is projected, hence the need to Its great hardness.
  • This cylinder (1) is covered by another hollow cylinder (2) (Fig-2, Fig-3), both being strongly bonded by heat and pressure, fully guaranteeing the union of the two cylinders and preventing any slippage between them.
  • This cylinder (2) (Fig-2), is the one with the complex shapes: A groove (4) that completely surrounds it and serves to fix or attach the nozzle to the lance or spray gun of the sand, and a conical trunk shape (3) fundamental to favor the absorption effect of wet or dry sand, this sand is absorbed in (3), passes through the cylinder (1) and is projected through the area (5).
  • This external cylinder (2) is made of a material whose technology and raw material allows it to be manufactured with complex shapes (3-4) at a very very low cost, so it has been thought to use plastic, fiber, resin, cheap metal, etc. .
  • a nozzle (Fig-3) is obtained, which absorbs sand through the area (3), passes it through the cylinder (1) and projects it out through the area (5), being subject to the lance or pistol of projection through the groove (4).
  • This nozzle has a very low manufacturing price and a great duration which gives us a very high working time-price nozzle ratio.
  • the optimal embodiment would be: The inner cylinder (1) made of ALUMINA and the outer cylinder (2) of plastic.
  • Figure 1. Shows in elevation, plan and section the symmetrical cylinder (1) that constitutes the simplest and hardest internal part of the nozzle.
  • Figure 2. Shows in elevation, plan and section the symmetrical cylinder (2) that constitutes the stern part of the nozzle, in it there is a clamping groove (4) and an internal trunk-conical shape (3) for the effect of sand absorption.
  • Figure 3. Shows a section or section of the complete nozzle, formed by the two cylinders (1-2), where you can easily see how the inner cylinder (1) is embedded in the outer cylinder (2), being able to see the shape conical trunk (3) and the external groove (4).
  • this invention is for application in abrasive blasting equipment either wet (liquid abrasive) or dry (air abrasive). They are used in industrial cleaning of all types of surfaces, steel in ships, concrete in buildings, etc.
  • nozzles that until now there are in the market are of one part or two parts: a shirt or housing attached to a nozzle holder and a core that in all cases joins the two areas through which the abrasive passes; the conical-trunk narrowing and the outlet tube, which are of a single piece and of a material of extreme hardness to abrasion wear.
  • the change that was raised in the MAIN PATENT is to create a housing of softer and cheaper material to work where both the nozzle holder system and the trunk-conical shape where the abrasive is channeled. Then it carries another hollow cylinder that is the one that really supports abrasion wear. This achieves a very good working hours / nozzle price ratio, by suppressing the trunk-conical area of a very hard and expensive material to machine.
  • Figure 5 is presented, where the internal cylinder (1) of great hardness, the new housing (2) and the trunk-conical piece (3) appear.
  • Figure 5. Shows in section the complete nozzle with the new housing (2), the new trunk-conical part (3), the internal cylinder of great hardness (1) and the clamping systems (4).
  • Figure 6. Shows in elevation, plan and section the new trunk-conical piece (3) that concentrates the abrasive and improves the absorption effect.
  • Figure 4 . Shows in elevation, plan and section the symmetrical cylinder (2) that constitutes the new housing where the fastening systems (4) are located.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)

Abstract

Ajutages permettant de projeter un jet abrasif humide ou sec, pour machines à haute ou basse pression, et travaux à froid ou à chaud, ces ajutages se composant de deux cylindres creux et symétriques (1-2) (fig.3), le cylindre intérieur (1) étant constitué d'alumine (Al2O3) et étant recouvert par le cylindre externe (2) en matériau plastique. Le cylindre externe possède une rainure (4) de fixation à la lance de projection ainsi qu'une zone tronconique (3) favorisant l'effet d'absorption du sable. Le sable entre par (3) passe à travers (1) et sort au travers de (5). Les améliorations introduites dans le brevet principal P9501760 daté du 8 Septembre 1995 et apportées à ces ajutages consistent à modifier le cylindre externe (2) (fig. 5), et visent à former la zone tronconique (3) comme une nouvelle pièce en un matériau différent de celui du cylindre interne (1) et du nouveau cylindre externe (2). On utilise des matériaux ayant des rapports prix/dureté différents, afin d'abaisser le prix de l'ajutage et d'obtenir un rapport optimal heures de travail/prix de l'ajutage. On utilise l'alumine en raison de son rapport très élevé dureté/prix. Le cylindre interne peut également être réalisé en carbure de tungstène ou de bore, le cylindre externe peut être réalisé en résine, fibre, polyuréthanne, caoutchouc, métal, etc. La zone tronconique de la nouvelle pièce est réalisée en aluminium. Ces ajutages sont destinés à être utilisés dans des applications de nettoyage industriel, en particulier pour nettoyer les coques de bateau, qu'elles soient en métal ou en polyester.
PCT/ES1996/000167 1995-09-08 1996-09-05 Ajutages pour projeter un jet abrasif WO1997009152A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ESP9501760 1995-09-08
ES9501760A ES2127665B1 (es) 1995-09-08 1995-09-08 Boquilla para dispositivos de proyeccion de chorro de arena en humedo y seco; para maquinas de alta y baja presion y trabajos en frio o calor.
ES9601688 1996-07-29
ESP9601688 1996-07-29

Publications (1)

Publication Number Publication Date
WO1997009152A1 true WO1997009152A1 (fr) 1997-03-13

Family

ID=26154916

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES1996/000167 WO1997009152A1 (fr) 1995-09-08 1996-09-05 Ajutages pour projeter un jet abrasif

Country Status (1)

Country Link
WO (1) WO1997009152A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2783735A1 (fr) * 1998-09-29 2000-03-31 Patrick Loubeyre 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

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1911571A (en) * 1933-05-30 Sand blast btozzle
CH256295A (fr) * 1944-07-07 1948-08-15 Morel Stanislas Buse de sablage.
US3228147A (en) * 1963-10-11 1966-01-11 Pangborn Corp Nozzle assembly for abrasive blasting apparatus
DE1932213A1 (de) * 1968-06-25 1970-01-02 Norton Co Duese fuer Sandstrahl- und Schleifmittelgeblaese
GB1463360A (en) * 1974-12-31 1977-02-02 Abrasive Int Ltd Abrading guns
EP0221236A1 (fr) * 1985-10-31 1987-05-13 Flow Systems, Inc. Attachement de buse pour des systèmes de découpe par jet de fluide abrasif
GB2196877A (en) * 1986-11-05 1988-05-11 Acme Marls Ltd Nozzles
DE9000178U1 (de) * 1990-01-09 1990-03-15 BeHaS Sandstrahlsysteme GmbH, 5100 Aachen Düsenvorrichtung für Sandstrahlgeräte
WO1994027785A1 (fr) * 1993-05-26 1994-12-08 Carolina Equipment And Supply Company, Inc. Dispositif et procede de nettoyage par liquides haute pression a bas debit

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1911571A (en) * 1933-05-30 Sand blast btozzle
CH256295A (fr) * 1944-07-07 1948-08-15 Morel Stanislas Buse de sablage.
US3228147A (en) * 1963-10-11 1966-01-11 Pangborn Corp Nozzle assembly for abrasive blasting apparatus
DE1932213A1 (de) * 1968-06-25 1970-01-02 Norton Co Duese fuer Sandstrahl- und Schleifmittelgeblaese
GB1463360A (en) * 1974-12-31 1977-02-02 Abrasive Int Ltd Abrading guns
EP0221236A1 (fr) * 1985-10-31 1987-05-13 Flow Systems, Inc. Attachement de buse pour des systèmes de découpe par jet de fluide abrasif
GB2196877A (en) * 1986-11-05 1988-05-11 Acme Marls Ltd Nozzles
DE9000178U1 (de) * 1990-01-09 1990-03-15 BeHaS Sandstrahlsysteme GmbH, 5100 Aachen Düsenvorrichtung für Sandstrahlgeräte
WO1994027785A1 (fr) * 1993-05-26 1994-12-08 Carolina Equipment And Supply Company, Inc. Dispositif et procede de nettoyage par liquides haute pression a bas debit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2783735A1 (fr) * 1998-09-29 2000-03-31 Patrick Loubeyre 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
EP0990487A1 (fr) * 1998-09-29 2000-04-05 Patrick Loubeyre Dispositif pour la décontamination des surfaces au moyen d'un jet composé d'air, d'une matière de projection à grains fins et d'un liquide
US6390899B1 (en) 1998-09-29 2002-05-21 Patrick Loubeyre Device for decontamination of surfaces

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