EP0880997A2 - Buse à fluide et tête à jet - Google Patents

Buse à fluide et tête à jet Download PDF

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Publication number
EP0880997A2
EP0880997A2 EP96118192A EP96118192A EP0880997A2 EP 0880997 A2 EP0880997 A2 EP 0880997A2 EP 96118192 A EP96118192 A EP 96118192A EP 96118192 A EP96118192 A EP 96118192A EP 0880997 A2 EP0880997 A2 EP 0880997A2
Authority
EP
European Patent Office
Prior art keywords
nozzle
nozzle according
channel
fluid
jet
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.)
Withdrawn
Application number
EP96118192A
Other languages
German (de)
English (en)
Other versions
EP0880997A3 (fr
Inventor
Ingo Dipl.-Ing. Friedrichs
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.)
Friedrichs Gabriele
Original Assignee
Friedrichs Gabriele
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 Friedrichs Gabriele filed Critical Friedrichs Gabriele
Publication of EP0880997A2 publication Critical patent/EP0880997A2/fr
Publication of EP0880997A3 publication Critical patent/EP0880997A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material
    • B05B7/149—Spray pistols or apparatus for discharging particulate material with separate inlets for a particulate material and a liquid to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3402—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to avoid or to reduce turbulencies, e.g. comprising fluid flow straightening means
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/03—Nozzles specially adapted for fire-extinguishing adjustable, e.g. from spray to jet or vice versa
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/10—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in the form of a fine jet, e.g. for use in wind-screen washers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
    • B05B1/1627—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/28—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with integral means for shielding the discharged liquid or other fluent material, e.g. to limit area of spray; with integral means for catching drips or collecting surplus liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3026—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a gate valve, a sliding valve or a cock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0425—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid without any source of compressed gas, e.g. the air being sucked by the pressurised liquid
    • 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 invention relates to a hydraulic fluid jet nozzle and jet head especially for high pressure cleaning, fire extinguishing techniques etc.
  • a hydraulic fluid jet nozzle and jet head especially for high pressure cleaning, fire extinguishing techniques etc.
  • the largest possible beam widths with centered impact of the liquid jet At the same time, it should be in the beam stored pressure energy in the beam itself is retained in order to achieve the highest possible Impact on the surface to be cleaned or on the area to be deleted To ensure flames for whipping. Therefore is an optimized Combination of jet width and impact power of a concentrated jet crucial because it maximizes the impact.
  • High-pressure cleaners are known, for example, a water flow of 10-17 l / min through jet nozzles, which reduced a at their jet outlet Flow area to contract the flow increasing pressure and an injection pressure of e.g. To build up 80-200 bar.
  • an injection pressure e.g. To build up 80-200 bar.
  • the high jet speeds of 125-200 m / sec develop in the Great turbulence nozzle, which the originally uniform flow immediately after leaving the actual nozzle disassemble and into individual water droplets atomize, especially since the originally compressed water when Beam emission virtually explodes and the aforementioned effect is intensified.
  • the pressure energy originally contained in the flow thus becomes explosive broken down into droplet formation and atomization, i.e. in energy-consuming Formation of liquid surface in connection with partial withdrawal the original energy.
  • Sandblasting devices have become known in which a point beam is turned into a larger one Pipe with e.g. Venturi inlet shines in so that a vacuum for suction of the sand and subsequent acceleration caused by the fluid jet to an abrasive surface abrasion by the fluid-solid mixture ensure due to the impact generated.
  • Such sandblasters allow a certain post-concentration of the point beam, however, they basically run the one already sucked in Ambient air decelerated, further away the cone shell part back in the central beam for the purpose of renewed acceleration, so that the effects are limited.
  • the invention aims at (A) creating a point jet nozzle which significantly improves the impact force of the generated point jet compared to the prior art.
  • the atomized water particles can no longer expand conically in order to be subsequently decelerated by ambient air, which would cause them to lose their kinetic energy, but they are retained in the jet within the rectifier channel 58, where because of that Partial vacuum only a little energy can be lost, a considerable part of the nebulization energy is recovered, small drops combine to form larger drops with higher impact power, so that longer flight paths and greater impact power are combined.
  • the strong turbulence at the end of the nozzle channel 50 is greatly reduced by reunited drops of water with greater mass and less lateral movement, so that the flight paths are aligned, which in turn increases the flight distance and impact force.
  • (B) object of the invention a stepless adjustment of possible impact force and flight distances of the beam described above.
  • This goal is achieved in that a part of the (inlet) stream is directed directly behind the nozzle channel 50 into the already partially developed jet according to the invention within the rectifier channel 58, so that the liquid expanding from the nozzle channel 50 mixes with fresh high-pressure liquid, as a result of which the Mixed current leaves the output of rectifier channel 59 at a lower speed and impact force, so that the impact force is reduced.
  • the (C) aim of the invention to continuously adjust the (continuously adjustable) spot beam to a wide beam in each setting.
  • This goal is achieved in that a device that squeezes the beam laterally is arranged directly behind the rectifier channel 58, so that the originally round beam (on both sides) is squeezed into a flat beam.
  • the aim of the invention is to combine at least two functions described above. This goal is achieved by using a - in principle known - changeover valve on the spray head first to cover one function and then after the changeover the other function, the path changeover being carried out, for example, as previously known by means of a gravity valve with a ball closing the bore that is not required in each case can.
  • the nozzle according to the invention according to Fig. 1b shows, in contrast, that in the moment of explosion, the water droplets formed are laterally limited and then rectified, so that braking by ambient air cannot occur, so that the largest possible droplet size is ensured, especially since a suitable structural design allows reunification Small drops guaranteed and turbulence can be kept as low as possible compared to the prior art.
  • the initial point jet can also be brought about by a nozzle insert 63.
  • the spot jet leaving the nozzle according to the invention can be squeezed flat laterally by baffle plates 22 so that the original spot jet is angled , area-wide flat jet is deformed and vice versa.
  • the sandblasting head according to FIG. 3 is also mounted or plugged onto the nozzle end 64, 65, for example by means of a snap ring.
  • the already somewhat resolved jet which leaves the rectifier channel 58 (with its relatively large drops of the highest possible speed, while avoiding lateral nebulization losses and water particles that are largely evenly distributed over the jet cross section), has it easier than previously known to now uniformly accelerate the sand particles to the highest speed accelerate.
  • the by-pass sleeve 77 opens in another By-pass also the radial bore 76 '' to the parallel bore 58 '' and then the radial bore 76 'to the further parallel bore 58', so that pressure and impact are reduced again.
  • Parallel arrangement of the bores 58, 58 'and 58' ' is due to less Squeezing the flat jet squeeze device according to. Fig.2 also not lost so much energy.
  • Fig. 5a shows a 4-way switching system containing the central jet according to the invention and a second by-pass flow through the bores 80, 83 and 84 when, for example, the ball check valve 82 is open, by measuring the spray head when the inlet water is switched on Fig. 5b is rotated about 120 ° counterclockwise.
  • the ball 90 falls down on its bore 92 and closes it, while the ball 82 falls on the stopper 81 and thus opens the bore 84, so that the fluid flows both through the central bore and in parallel through the bore 84.
  • the spray head is turned 120 ° clockwise, the ball 82 closes its bore 84, while the ball 90 falls on its stopper 89 and thus opens its bore 92.
  • a continuously adjustable valve according to FIG. 6 can be integrated, which opens the control piston 104 continuously by turning the rotary knob 96, so that by-pass water is continuously adjustable through bore 80, chamber 103, bore 195 for Chamber 94 and finally flows into the rectifier channel 58.
  • the point beam impact force can be regulated continuously, and after mounting a flat beam squeeze head according to FIG. 2, each continuously set point beam can be adjusted continuously to the flat beam. For the first time, therefore, a single spray head can more or less cover all applications.
  • the radial bores leading to the ring channel 85 can lead exactly to the center of the axis - see top / right in Fig. 7- or they can be arranged slightly tangentially - see bottom / left in Fig. 7- so that the fluid in the jet is activated by bypass rotates and swirls radially at the outlet to create a relatively large impact area, such as required for applying chemicals, foaming or fire extinguishing at short distances.
  • inventive stepped bores according to FIGS. 1b and 1c can be arranged side by side several times, as shown, for example, in FIGS. 8a and 8b , in order to generate a stronger flat jet .
  • these bores can also lie on a circle or a cone in order to achieve a certain surface effect even at a greater distance.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Catching Or Destruction (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Telephone Function (AREA)
EP96118192A 1995-11-13 1996-11-13 Buse à fluide et tête à jet Withdrawn EP0880997A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29517853U DE29517853U1 (de) 1995-11-13 1995-11-13 Flüssigkeits-Spritzkopf
DE29517853U 1995-11-13

Publications (2)

Publication Number Publication Date
EP0880997A2 true EP0880997A2 (fr) 1998-12-02
EP0880997A3 EP0880997A3 (fr) 1999-01-20

Family

ID=8015281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96118192A Withdrawn EP0880997A3 (fr) 1995-11-13 1996-11-13 Buse à fluide et tête à jet

Country Status (3)

Country Link
EP (1) EP0880997A3 (fr)
JP (1) JPH1057844A (fr)
DE (2) DE29517853U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE43824E1 (en) 2001-01-11 2012-11-20 Powder Pharmaceuticals Inc. Needleless syringe
CN105983494A (zh) * 2015-01-30 2016-10-05 镇江明择软件科技有限公司 一种远距离节能细水雾喷头

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19832568C2 (de) * 1998-07-20 2003-04-30 Anton Jaeger Rotordüse
GB0708758D0 (en) 2007-05-04 2007-06-13 Powderject Res Ltd Particle cassettes and process thereof
EP3659436A1 (fr) 2018-11-30 2020-06-03 Bayer AG Lutte contre les plantes au moyen de l'énergie électrique
CN115228643B (zh) * 2022-09-03 2024-03-29 苏州微知电子科技有限公司 一种气动雾化喷涂方法及系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982605A (en) * 1975-05-05 1976-09-28 The Carborundum Company Nozzle noise silencer
IL59439A (en) * 1980-02-21 1983-05-15 Bron Dan Two stage jet pump
US4832266A (en) * 1988-04-29 1989-05-23 Marvin Lyle E Fluid-jet-cutting nozzle assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE43824E1 (en) 2001-01-11 2012-11-20 Powder Pharmaceuticals Inc. Needleless syringe
CN105983494A (zh) * 2015-01-30 2016-10-05 镇江明择软件科技有限公司 一种远距离节能细水雾喷头
CN105983494B (zh) * 2015-01-30 2018-09-11 中消建安科技有限公司 一种远距离节能细水雾喷头

Also Published As

Publication number Publication date
DE29619572U1 (de) 1997-08-28
DE29517853U1 (de) 1996-02-29
JPH1057844A (ja) 1998-03-03
EP0880997A3 (fr) 1999-01-20

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