EP0429831A2 - Dispositif de nettoyage à haute pression - Google Patents

Dispositif de nettoyage à haute pression Download PDF

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Publication number
EP0429831A2
EP0429831A2 EP90119893A EP90119893A EP0429831A2 EP 0429831 A2 EP0429831 A2 EP 0429831A2 EP 90119893 A EP90119893 A EP 90119893A EP 90119893 A EP90119893 A EP 90119893A EP 0429831 A2 EP0429831 A2 EP 0429831A2
Authority
EP
European Patent Office
Prior art keywords
valve
compressed air
line
control line
shut
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Withdrawn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
EP90119893A
Other languages
German (de)
English (en)
Other versions
EP0429831A3 (en
Inventor
Klaus Kock
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.)
Grace Service Chemicals GmbH
Original Assignee
Grace Service Chemicals GmbH
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 Grace Service Chemicals GmbH filed Critical Grace Service Chemicals GmbH
Publication of EP0429831A2 publication Critical patent/EP0429831A2/fr
Publication of EP0429831A3 publication Critical patent/EP0429831A3/de
Withdrawn legal-status Critical Current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
    • B05B7/0018—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 with devices for making foam
    • B05B7/0025—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 with devices for making foam with a compressed gas supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/003—Cleaning involving contact with foam

Definitions

  • the invention relates to a high-pressure cleaning device for discharging cleaning fluid foamed by the supply of compressed air, with a liquid supply line for water under high pressure which can be closed by a water shut-off valve and with an air supply line for compressed air which can be closed with an air shut-off valve , which is connected to the liquid supply line between the water shut-off valve and a working hose forming a frothing space and adjoining the liquid supply line, a chemical supply line being provided in the area between the water shut-off valve and the connection of the air supply line to the liquid supply line connected.
  • a known high-pressure cleaner of this type (DE-OS 24 45 689)
  • the water under high pressure is passed through an injector or a water jet pump, and at its or its suction opening the chemical supply line is connected, so that this is under high pressure standing water entrains chemicals and a mixture of water and chemicals is formed which then, with the addition of compressed air, reaches the foaming room, in which the cleaning foam to be discharged under high pressure is formed.
  • This known method has the disadvantage that it is relatively complex because it requires specially protected and trained facilities and / or does not always work reliably in the rough operation.
  • a high-pressure cleaning device of the type mentioned at the outset is designed according to the invention by a tubular control line which can be pressurized with compressed air and which is closed adjacent to the outlet end of the working hose by means of a valve which can be opened by hand and whose end facing away from the valve is connected to a reversing valve , which acts upon the shut-off valves with this closing compressed air when a high pressure is present on the control line, the control line running at least partially in the interior of the working hose.
  • the compressed air available for the foaming process is thus used as a control medium, in that a valve kept open during operation by the user by acting on a handle or lever element allows compressed air to continuously escape from one end of a tubular, i.e. flexible control line and when the valve closes automatically as a result of the release of the handle or lever element in the control line by the compressed air, an increased pressure is built up, which causes the changeover of a reversing valve, so that the compressed air closes the shut-off valves for high-pressure water and compressed air. Then compressed air is still present at the reversing valve, but on the one hand the connection between the source of water under high pressure and the working hose and on the other hand the connection between the compressed air source and the working hose is interrupted.
  • the tubular control line runs at least partially within the working hose, the supply of water and compressed air under high pressure is correspondingly interrupted even when the working hose is inoperable during operation is bent.
  • Such a deformation of the working hose then also leads to a kinking of the tubular control line, which bends together with the working hose, as a result of which, at least for the period of the kinking in the control line, an overpressure is produced which causes the shut-off valves to close.
  • control line In order to obtain a direct assignment of the deformation of the working hose and kinking of the control line, the control line can be embedded in the wall of the working hose over a longer distance or can be attached to the inner surface thereof.
  • the shut-off valves preferably consist of pneumatically actuated ball valves.
  • the compressed air source for supplying compressed air to the control line can be connected to an input of the reversing valve consisting of a 4/2-way valve, which then has an output on the control line and one or more other outputs on connecting lines to the shut-off valves, in particular those which can be actuated pneumatically Ball valves.
  • the structure of a high-pressure cleaning device for discharging foamed cleaning liquid shown schematically in FIG. 1, has a connecting line 1 for supplying water under high pressure, which is connected to the input of a pneumatically actuated ball valve 2, from the output of which a line 3 to one Injector 4 leads, the output of which is connected via a line 5 to the input of a flexible working hose 6.
  • a chemical feed connection 17 is connected to the suction inlet of the injector 4 and is connected to a chemical source via a check valve 16 and a metering valve 15.
  • Compressed air is supplied via a line 10, and the line 10 lies at the input of a pneumatically actuated ball valve 11, the output of which is connected via a line 12 to the line 5, that is to say between the injector 4 and the input of the working hose 6 into which chemicals are added high pressure water leading line 5 opens.
  • a compressed air line 22 branches off from the compressed air line 10 in front of the inlet of the ball valve 11 and is located at the inlet 1 of a 4/2-way valve 21.
  • Two outputs 2, 4 of the 4/2 way valve 21 are connected via lines 25 and 26 to the pneumatic drives for the ball valves 2 and 11.
  • the compressed air line 22 is connected to a tubular, that is to say flexible, control line 20 and there is a connection to a control input of the valve 21.
  • the control line 20 enters the working hose 6 in the rear end region and runs as far as possible in contact with the inner surface of the latter at its front end of the working hose 6.
  • the front end of the control line 20 is closed by a spring-closed valve 23, which by pivoting or moving a Lever 24 can be opened.
  • the schematically illustrated high-pressure cleaning device is connected via its lines 1 and 10 to sources of water and compressed air under high pressure and the check valve 16 and the metering valve 15 are connected via line 17, a connection to a chemical source is made as a result of pivoting the Lever 24 open valve 23 guided water under high pressure through the injector 4 and thereby enriched with chemicals.
  • Compressed air is added to this cleaning liquid via the line 12, so that the cleaning liquid is foamed in the working hose 6 in a known manner and is then applied to the surface to be cleaned through a schematically illustrated dispensing nozzle 7.
  • compressed air flows from line 10 through line 22 and control line 20 and exits valve 23, while input 1 of valve 21 is connected to output 2 and thus to line 25.
  • the pressure in the line 25 connected to the penumatic ball valve drives keeps the ball valves 2 and 11 in the open state.
  • the ball valves 2, 11 with the associated pneumatic ball valve drives 30, the injector 4 and the valve 21 are accommodated in a housing 40 which is shown open and into which the line 1 is under high pressure stagnant water, the line 10 for compressed air and the line 17 for chemicals to be added and the line 5 for compressed air mixed mixture of water and chemicals and the control line 20 lead out.
  • the working hose 6 is connected to the line 5 via a hose coupling 35 and that a lance 36 is attached to the outer end of the working hose 6, which carries an exhaust nozzle 38 at its free end and which has a handle 37 at its inner end region , in which the valve 23 with the pivotable lever 24 is also arranged.
  • the control line 20 enters the working hose 6 in the center of the hose coupling 35 and from the working hose 6 near the inner end of the lance 36 and is connected to the valve 23 at this end.
  • the mode of operation of the high-pressure cleaning device according to FIG. 2 corresponds to that from FIG. 1, ie if the lines 1 and 10 are connected to water and compressed air under high pressure and the line 17 is connected to a source for chemicals to be added, the user can hold it the lance on the handle 37 and pulling the lever 24 open the valve 23 so that, as can be seen in FIG. 2, the compressed air present at the control line 20 emerges from the valve 23 through an opening adjacent to the inner end of the lever 24, while simultaneously foamed cleaning liquid is discharged through the lance 36 and the dispensing nozzle 38.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
EP19900119893 1989-11-23 1990-10-17 High pressure cleaning device Withdrawn EP0429831A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3938981A DE3938981C1 (fr) 1989-11-23 1989-11-23
DE3938981 1989-11-23

Publications (2)

Publication Number Publication Date
EP0429831A2 true EP0429831A2 (fr) 1991-06-05
EP0429831A3 EP0429831A3 (en) 1992-06-24

Family

ID=6394140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900119893 Withdrawn EP0429831A3 (en) 1989-11-23 1990-10-17 High pressure cleaning device

Country Status (6)

Country Link
EP (1) EP0429831A3 (fr)
JP (1) JPH03181377A (fr)
DE (1) DE3938981C1 (fr)
FI (1) FI905774A7 (fr)
IE (1) IE903670A1 (fr)
NO (1) NO905061L (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996033817A1 (fr) * 1995-04-25 1996-10-31 Lawrence Michael E S Appareil de production de mousse de savon
EP1016469A1 (fr) * 1998-12-16 2000-07-05 Schneider Luftdruck GmbH Pistolet de nettoyage d'un conduit d'évacuation
CN103223403A (zh) * 2013-04-07 2013-07-31 苏州市建诚装饰材料有限公司 一种浸胶计量辊用清洁装置
CN104138862A (zh) * 2014-06-26 2014-11-12 江西金达莱环保股份有限公司 一种清洗枪及清洗膜的方法
EP3800094A1 (fr) * 2019-10-04 2021-04-07 Valeo Systèmes d'Essuyage Dispositif de nettoyage de vitre de véhicule

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015009521U1 (de) * 2015-05-13 2018-02-15 Robert Nesen Hochdruckreinigungsmaschine
DK179376B1 (en) * 2016-11-08 2018-05-28 Nilfisk Food As Compact cleaning device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1157214A (fr) * 1956-08-09 1958-05-28 Mecanique Metallurgie Ste Gle Perfectionnements apportés aux installations pour la projection d'un fluide, notamment pour le nettoyage au jet
US3375980A (en) * 1966-07-21 1968-04-02 Hydro Services Inc Water blast control system
DE7240741U (de) * 1972-11-07 1973-03-22 Haas W & Sohn Spritzeinrichtung, wie Spritzpistolen und dergleichen mit Loslaß-Abschaltung
DE2445689A1 (de) * 1974-09-25 1976-04-01 Fink Chemie Geraet zum aufschaeumen von fluessigkeiten, insbesondere von wasser mit chemikalien zu reinigungszwecken
US4519576A (en) * 1983-12-15 1985-05-28 Winegeart Mitchell E Oil well safety valve for use with drill pipe

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996033817A1 (fr) * 1995-04-25 1996-10-31 Lawrence Michael E S Appareil de production de mousse de savon
EP1016469A1 (fr) * 1998-12-16 2000-07-05 Schneider Luftdruck GmbH Pistolet de nettoyage d'un conduit d'évacuation
CN103223403A (zh) * 2013-04-07 2013-07-31 苏州市建诚装饰材料有限公司 一种浸胶计量辊用清洁装置
CN104138862A (zh) * 2014-06-26 2014-11-12 江西金达莱环保股份有限公司 一种清洗枪及清洗膜的方法
EP3800094A1 (fr) * 2019-10-04 2021-04-07 Valeo Systèmes d'Essuyage Dispositif de nettoyage de vitre de véhicule
FR3101589A1 (fr) * 2019-10-04 2021-04-09 Valeo Systemes D'essuyage Dispositif de nettoyage de vitre de véhicule

Also Published As

Publication number Publication date
NO905061D0 (no) 1990-11-22
FI905774A7 (fi) 1991-05-24
IE903670A1 (en) 1991-06-05
JPH03181377A (ja) 1991-08-07
NO905061L (no) 1991-05-24
EP0429831A3 (en) 1992-06-24
DE3938981C1 (fr) 1991-04-11
FI905774A0 (fi) 1990-11-22

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