EP0832719B1 - Installation de sablage humide - Google Patents

Installation de sablage humide Download PDF

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Publication number
EP0832719B1
EP0832719B1 EP97109332A EP97109332A EP0832719B1 EP 0832719 B1 EP0832719 B1 EP 0832719B1 EP 97109332 A EP97109332 A EP 97109332A EP 97109332 A EP97109332 A EP 97109332A EP 0832719 B1 EP0832719 B1 EP 0832719B1
Authority
EP
European Patent Office
Prior art keywords
propellant
granulate
liquid
pressure vessel
installation according
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.)
Expired - Lifetime
Application number
EP97109332A
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German (de)
English (en)
Other versions
EP0832719A3 (fr
EP0832719A2 (fr
Inventor
Josef Bauer
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.)
Bauer Andreas
Original Assignee
Individual
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Filing date
Publication date
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Publication of EP0832719A2 publication Critical patent/EP0832719A2/fr
Publication of EP0832719A3 publication Critical patent/EP0832719A3/fr
Application granted granted Critical
Publication of EP0832719B1 publication Critical patent/EP0832719B1/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
    • 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
    • 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
    • B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
    • B24C7/0053—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier
    • 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
    • B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
    • B24C7/0076—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier the blasting medium being a liquid stream

Definitions

  • the present invention relates on a wet blasting system with two controllable system parts, one of which is a controllable facility part of the deployment of dry granules in a gaseous blowing agent is suspended, serves and the other controllable part of the system the provision of a mixture of gaseous propellants and granules to be mixed liquid, the Mixture of granulate and blowing agent on the one hand and liquid on the other hand, to be assigned to an operator Spray tool is done.
  • the object of the invention is such a wet blasting system to train that so-called bridging in the granule boiler and thus a disturbance of the Operating sequence is prevented.
  • the solution to this problem is the formation of a wet blasting system with the aforementioned features such that the first controllable system part a compressor to form the Blowing agent in the form of compressed gas, a granulate heater between the compressor and a pressure vessel Granulate storage and an introduction of the compressed gas into the Pressure vessel to form the dosed to be removed Has granules / blowing agent mixture, while the second controllable system part of a high pressure pump to promote the Liquid between a liquid supply source and the Spray tool is used, cooling the compressor coming gaseous blowing agent takes place in two heat exchangers, which the gaseous propellant between the compressor and pressure vessel is fed in succession, and of which the the first is the granulate heating of the first part of the system, so that in it a heating of the granulate / blowing agent mixture leaving the pressure vessel and cooling the blowing agent or compressed gas takes place while in the second heat exchanger Heat exchange between that of the liquid supply source coming and the liquid to be sprayed on the one hand and the propellant to be
  • W0 94/21426 already describes a wet blasting system two parts of the system, one part of the system one Compressed air supply, which by means of a delivery line is connected to a jet nozzle, in which Delivery line between compressed air supply and jet nozzle the air is dried and the pressure is regulated and granules in front of the jet nozzle of the conveyed compressed air is mixed from one granulate store while the other Plant part a pump for pumping water from a Water reservoir for the jet nozzle and for mixing from water to the compressed air granulate mixture in the jet nozzle includes, with the water reservoir as a heat exchanger is formed in which the pump Warm water and one coming from the compressed air supply Compressed air portion is cooled accordingly before this Increasing the air pressure in the granulate storage in this Granulate storage is fed.
  • its aim is that dry granulate provided by one part of the plant, suspended according to the invention in a gaseous blowing agent and that provided by the other part of the system Bring liquid together so that the necessary Control operations performed by a single operator can be.
  • a gaseous blowing agent provided by the other part of the system Bring liquid together so that the necessary Control operations performed by a single operator can be.
  • One is used to achieve this goal further embodiment of the wet blasting system according to the invention such that the control of both parts of the system centrally from Spray tool is carried out by the operator to be actuated signal transmitter for control means in the respective are assigned to both parts of the system.
  • the one pressure vessel 3 and one 4 includes.
  • the moist warm compressed air supplied to a heat exchanger 5 the Cold water supplied as coolant via a line 6 is, the heat exchanger 5 as hot water via a line 7 leaves.
  • the heat exchanger 5 is a countercurrent principle working water powered air cooler. compressed air and from it precipitated in the heat exchanger or air cooler 5 Condensate enters a water separator 8 which the condensate is drained off, so that the remaining Air as dry compressed air via line 9 into the pressure vessel 3 arrives.
  • the arrow 10 is the input of the granules shown in the pressure vessel 3.
  • Granulate is a subset of the pressure vessel taken, the amount withdrawn by means of a granulate metering valve 11 can be determined.
  • Granulate subsets arrive in steady succession in the pellet heating 4, in the one Part of the dry compressed air provided according to Fig.l. arrives.
  • the total amount of dry compressed air comes over the line 9 already mentioned in connection with FIG. 1 via a compressed air control valve 12 to a branch point 13, from which a first subset via the line 14 into the granulate heater 4 and a second subset, is the dry compressed air, which is shown in FIG. 1 in the pressure vessel 3 arrives.
  • the relationship between the first and second Partial quantity is by means of a conveying air control valve 14 in line branch 15 from branching point 13 to granule heating 4 determined.
  • the mixture of granules and drier Compressed air in an appropriate amount and in an appropriate ratio between the mixture components is called compressed air blasting media mixture (Arrow 16) of the blasting gun 17.
  • FIG. 3 The way of process water as the preferred dust-binding Liquid is shown in Fig. 3.
  • a source of water 18 in water tank or connecting a water pipe cold water (arrow 19) is removed and the heat exchanger or water-operated air cooler 5 fed to be used in it as above has been described in connection with FIG. 1. That about the Line 7 leaving the heat exchanger or air cooler 5 Hot water (represented by arrow 20) is by means of a pneumatic high pressure pump 21 of the blasting gun 17 fed.
  • a 12 volt current is drawn from the compressor battery 22, to be fed to a switch and control panel 23, from which the power supply of the conveying air control valve 14 (electrical line 24), the pneumatic high-pressure pump 21 (electrical line 25) and the granulate metering valve 11 (electrical line 26) is effected. Furthermore, the switch and control panel 23 Supply of a dead man circuit 27 (electrical line 28) and a boiler vibrator 29 (electrical line 30) causes.
  • the dead man circuit 27 is before the branch point 13 downstream of the compressed air control valve 12. As soon as the Influence of the operator of the system on the blasting gun 17 ceases, the function of the entire system terminated by stopping the supply of dry compressed air,
  • the boiler vibrator is one around the outlet 31 of the pressure boiler placed vibrator 32 of suitable design.
  • 32 should be used as an additional safeguard against bridging, especially since they only intended as an additional safeguard against bridging is correspondingly simple and can be trained external assignment to the boiler outlet 31 a simple monitoring and any necessary repairs with the least possible Disruption of the operational sequence makes possible.
  • Fig. 5 is the overall system with the way of the process water 3, the path of the compressed air according to FIG. 1 and the Away from conveying air and blasting media according to FIG. 2 as a block diagram shown.
  • the reference numerals are used, which are also in FIGS. 1 to 3 have been used so that the paths of water (arrow 20) and granules fluidized in compressed air (arrow 16) to the spray gun 17 can be understood without this in individual would have to be described again.
  • trained signal transmitter line 31 Fig.
  • the spray gun 17 itself is not actually Object of the present invention, except for the accommodation of the keyboard or switch board, which, however, basically can be done in any way. It will consequently from the description of the spray gun in detail apart from and referring to Fig. 6, the internal structure the spray gun shows.
  • Fig. 5 the vibrating device 29 is shown as arranged in the boiler 3; in fact, according to FIG. 2, it should be the area of the outside Surround boiler outlet 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Fertilizers (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Catching Or Destruction (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (16)

  1. Installation à jet humide ayant deux sections d'installation (16, 20) que l'on peut commander, dont l'une des sections d'installation (16) que l'on peut commander, sert à la préparation du granulat sec qui est mis en suspension dans un agent propulseur gazeux, et l'autre section d'installation (20) que l'on peut commander, sert à préparer un liquide à mélanger au mélange d'agent propulseur gazeux et de granulat, le mélange de granulat et d'agent propulseur s'effectuant d'un côté et celui avec le liquide s'effectuant de l'autre côté dans un outil de pulvérisation (17) associé à un opérateur, la première section d'installation (16) que l'on peut commander, présentant un compresseur (1) pour former l'agent propulseur sous forme d'un gaz comprimé, un réservoir de granulat façonné sous la forme d'un réservoir sous pression (3) et une amenée de gaz comprimé dans le réservoir sous pression (3) pour former le mélange granulat/agent propulseur à retirer par doses de celui-ci, tandis que dans la deuxième section d'installation que l'on peut commander, une pompe haute pression (21) sert à transporter le liquide entre une source de réserve de liquide (18) et l'outil de pulvérisation (17), et un échange de chaleur se produisant entre l'agent propulseur gazeux et le liquide dans un échangeur de chaleur,
    caractérisée en ce que
    l'échange de chaleur se produit dans deux échangeurs de chaleur (4, 5) dans lesquels est introduit successivement un agent propulseur gazeux entre le compresseur (1) et le réservoir sous pression (3) et dont le premier constitue le chauffage du granulat (4) à la sortie du réservoir sous pression (3) de la première section d'installation (16), de sorte qu'il s'y produit un échauffement du mélange granulat/agent propulseur quittant le réservoir sous pression (3) et un refroidissement de l'agent propulseur ou du gaz comprimé, tandis que le deuxième échangeur de chaleur (5) constitue l'échangeur de chaleur, dans lequel se produit l'échange de chaleur entre d'une part le liquide provenant de la source de réserve de liquide (18) et à introduire dans l'outil de pulvérisation (17) et d'autre part l'agent propulseur à introduire dans le réservoir sous pression et l'agent propulseur est encore refroidi et séché, le liquide étant échauffé.
  2. Installation à jet humide selon la revendication 1, caractérisée en ce que la commande des deux sections d'installation (16, 20) se réalise de façon centrale à partir de l'outil de pulvérisation (17), auquel sont associés les générateurs de signaux à activer dans ce but par l'opérateur, pour les moyens de commande dans chacune des deux sections d'installation (16, 20).
  3. Installation à jet humide selon la revendication 1 ou 2, caractérisée en ce qu'une portion est retirée de l'agent propulseur sec avant qu'il ne soit amené dans le réservoir sous pression (3), portion dans laquelle est mis en suspension le granulat quittant le réservoir sous pression.
  4. Installation à jet humide selon la revendication 1 ou 2, caractérisée en ce qu'un séparateur de liquide (8) est disposé entre le deuxième échangeur de chaleur (5) et le réservoir sous pression (3), séparateur duquel sont retirés conjointement, d'une part, le liquide lui-même de l'agent propulseur dans le séparateur de liquide et le liquide déjà séparé de l'agent propulseur dans le deuxième échangeur de chaleur (5) et introduit dans le séparateur de liquide séparément de l'agent propulseur, et d'autre part l'agent propulseur sec en est retiré séparément.
  5. Installation à jet humide selon l'une quelconque des revendications 1 à 4, caractérisée par un dispositif de dosage (11) pour le granulat au niveau de la sortie (31) du réservoir sous pression et par un dispositif de dosage (14) pour déterminer le rapport quantitatif entre la proportion d'agent propulseur sec, qui est introduite dans le réservoir sous pression (3) et la proportion d'agent propulseur dans laquelle est suspendu le granulat, le granulat après le dispositif de dosage (11) au niveau de la sortie du réservoir sous pression étant mis en suspension dans l'agent propulseur dans une chambre de mélange (4) après le deuxième dispositif de dosage (14).
  6. Installation à jet humide selon la revendication 5, caractérisée en ce que l'ajout en mélangeant du liquide au mélange constitué de l'agent propulseur et du granulat suspendu dans celui-ci, a lieu dans l'outil de pulvérisation (17).
  7. Installation à jet humide selon l'une quelconque des revendications 1 à 6, caractérisée par "un dispositif de coupure d'homme-mort" (27), par le biais duquel est introduit de l'agent propulseur séché avant l'introduction dans le réservoir sous pression(3).
  8. Installation à jet humide selon l'une quelconque des revendications 1 à 7, caractérisée par un dispositif secoueur (32) qui, à l'extérieur, est associé au réservoir sous pression (3), monté sans vibration dans la zone de ses buses de sortie.
  9. Installation à jet humide selon l'une quelconque des revendications 2 à 8, caractérisée en ce que le compresseur de la première section d'installation est une pompe (111) qui est entraínée par un fluide gazeux qui est retiré de la même amenée centrale (103), de laquelle est également retiré l'agent propulseur gazeux pour transporter le granulat du réservoir sous pression à l'outil de pulvérisation (100) et en ce qu'il est prévu une vanne de régulation (106) pour introduire le fluide dans le moteur de pompe (110) ainsi qu'une vanne de régulation supplémentaire (107) pour l'agent propulseur du granulat, que l'on doit exploiter de façon dépendante l'une de l'autre, de sorte que lorsque débute un processus de jet, il n'y a d'abord que la vanne de régulation (106) pour introduire le fluide dans le moteur de pompe (11) qui est ouverte, afin d'introduire une quantité relativement grande de liquide dans le cadre de la deuxième section d'installation en vue d'introduire du liquide dans l'outil de pulvérisation (100) et en ce que la vanne de régulation supplémentaire (107) ne s'ouvre que lorsqu'une pression prédéterminée est atteinte dans la conduite transportant le liquide, afin d'introduire dans l'outil de pulvérisation (100), le granulat suspendu dans l'agent propulseur et cet agent propulseur gazeux, à l'exception du liquide transporté par la pompe.
  10. Installation à jet humide selon les revendications 8 et 9, caractérisée en ce que la pression de fonctionnement nécessaire dans le réservoir sous pression (105) n'est produite que par une partie de l'agent propulseur gazeux.
  11. Installation à jet humide selon les revendications 8 à 10, caractérisée en ce que le rapport entre la portion d'agent propulseur gazeux à introduire dans le réservoir sous pression et un fluide gazeux à introduire dans le dispositif secoueur (117) est déterminé par une paire de vannes (118, 120), qui est placée en aval de la vanne de régulation supplémentaire (107) dans un montage en parallèle.
  12. Installation à jet humide selon les revendications 9 à 11, caractérisée en ce que le fluide gazeux excédentaire provenant du réservoir sous pression (105) et le gaz d'échappement du moteur de pompe (110) sont réunis dans un échangeur de chaleur (122) avant que le mélange gazeux ne quitte l'installation.
  13. Installation à jet humide selon la revendication 12, caractérisée en ce que le mélange gazeux quitte l'installation à travers un amortisseur de bruit (123) disposé en aval de l'échangeur de chaleur (122).
  14. Installation à jet humide selon l'une quelconque des revendications 9 à 13, caractérisée en ce que le fluide gazeux est préparé avec un compresseur, le liquide provenant d'un réseau central.
  15. Installation à jet humide selon l'une quelconque des revendications 9 à 14, caractérisée en ce que la dépendance de l'actionnement d'une vanne de régulation (106) et d'une vanne de régulation supplémentaire (107) est réalisée au moyen d'un générateur de signaux (112) dépendant de la pression dans la conduite de transport entre la pompe (111) et l'outil de pulvérisation (100).
  16. Installation à jet humide selon la revendication 15, caractérisée en ce que le générateur de signaux (112) peut être surrégulé d'office, afin de pouvoir introduire de façon indépendante de la pression, exclusivement du liquide dans une buse de sortie de liquide (102), propre à l'outil de pulvérisation (100).
EP97109332A 1996-06-08 1997-06-09 Installation de sablage humide Expired - Lifetime EP0832719B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19623024 1996-06-08
DE19623024A DE19623024A1 (de) 1996-06-08 1996-06-08 Naßstrahlanlage

Publications (3)

Publication Number Publication Date
EP0832719A2 EP0832719A2 (fr) 1998-04-01
EP0832719A3 EP0832719A3 (fr) 1998-11-04
EP0832719B1 true EP0832719B1 (fr) 2003-04-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97109332A Expired - Lifetime EP0832719B1 (fr) 1996-06-08 1997-06-09 Installation de sablage humide

Country Status (3)

Country Link
EP (1) EP0832719B1 (fr)
AT (1) ATE237431T1 (fr)
DE (2) DE19623024A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19910563A1 (de) * 1999-03-10 2000-09-14 Torbo Engineering Keizers Gmbh Reinigungsgerät und -Verfahren
KR20010014577A (ko) * 1999-03-18 2001-02-26 시부야 히로토시 클린싱 및 스크레이핑 방법과 그 장치 그리고 클린싱 및스크레이핑 매질유체 형성방법과 그 장치
CN108857915B (zh) * 2018-09-29 2023-07-18 广东水拓工程科技有限公司 湿式喷砂系统

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858358A (en) * 1973-01-02 1975-01-07 American Aero Ind High pressure liquid and abrasive cleaning apparatus
HU191769B (en) * 1985-01-29 1987-04-28 Ferenc Hollosi Grain-spreading apparatus and charging tap belonging to the apparatus of this kind
DE3643060A1 (de) * 1986-04-22 1987-11-19 Peiniger Ernst Gmbh Sicherheitseinrichtung
US4821467A (en) * 1986-06-06 1989-04-18 Whitemetal Inc. Control system for liquid propelled abrasive cleaning
US5412910A (en) * 1987-12-04 1995-05-09 Whitemetal, Inc. Wet abrasive blasting method and apparatus
US4901928A (en) * 1988-10-04 1990-02-20 Stripping Technologies Inc. Pressure hose handle and system
DE4209353C2 (de) * 1992-03-23 1994-12-15 Pro Aqua Geraete Gmbh Feuchtstrahlanlage mit einer Strahlpistole
DE4244348C2 (de) * 1992-12-28 1996-09-19 Johann Szuecs Vorrichtung zur Speisung einer Strahlpistole mit nicht sublimierendem feinem oder staubförmigen Strahlgut
AU6957394A (en) * 1993-05-26 1994-12-20 Carolina Equipment And Supply Company, Inc. Method and apparatus for cleaning with high pressure liquids at low flow rates
DE29607056U1 (de) * 1996-04-18 1996-07-18 Gries, Josef, 82008 Unterhaching Vorrichtung zur Versorgung einer Strahlpistole mit Arbeitsmedien
FR2753643B1 (fr) * 1996-09-24 1998-12-04 Dispositif de commande d'une installation de nettoyage de surfaces contaminees

Also Published As

Publication number Publication date
DE19623024A1 (de) 1997-12-11
ATE237431T1 (de) 2003-05-15
DE59709834D1 (de) 2003-05-22
EP0832719A3 (fr) 1998-11-04
EP0832719A2 (fr) 1998-04-01

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