EP0421194B1 - Pistolet d'arrosage pour un dispositif de nettoyage à haute pression - Google Patents

Pistolet d'arrosage pour un dispositif de nettoyage à haute pression Download PDF

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Publication number
EP0421194B1
EP0421194B1 EP90118066A EP90118066A EP0421194B1 EP 0421194 B1 EP0421194 B1 EP 0421194B1 EP 90118066 A EP90118066 A EP 90118066A EP 90118066 A EP90118066 A EP 90118066A EP 0421194 B1 EP0421194 B1 EP 0421194B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
spray gun
line
housing
valve
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
EP90118066A
Other languages
German (de)
English (en)
Other versions
EP0421194A2 (fr
EP0421194A3 (en
Inventor
Klaus Frech
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP0421194A2 publication Critical patent/EP0421194A2/fr
Publication of EP0421194A3 publication Critical patent/EP0421194A3/de
Application granted granted Critical
Publication of EP0421194B1 publication Critical patent/EP0421194B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B05B1/3013—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 lift valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • B05B12/0022—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement
    • B05B12/0024—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement to a single position
    • B05B12/0026—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement to a single position to inhibit delivery
    • 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
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • B08B3/028—Spray guns

Definitions

  • the invention relates to a spray gun for a high-pressure cleaning device with a housing, which encloses a liquid supply, an outlet line and a closing valve and has a hand lever for opening the closing valve.
  • Such a spray gun is known, for example, from DE-OS 37 20 241.
  • the outlet line and the feed line are designed as pipe sections, with a closing valve being arranged in one of these pipe sections and being located inside this pipe section and being actuated by an actuating lever which enters the interior of the pipe section through an opening in the pipe section.
  • US-A-3 311 342 describes a valve which can be switched into a line and which enables opening and closing by sliding a sleeve placed on the line. It is actuated by turning an adjusting nut screwed onto the pipeline or by a pneumatic cylinder; such an arrangement is not suitable for a hand-held spray gun of a high-pressure cleaning device.
  • a spray gun of the type described at the outset in that the liquid supply line is inserted in a sealed manner in a sleeve, in that the outlet line is inserted in the same sleeve in a sealed manner from the opposite side, that one of the two lines forms a valve body within the seal, to which a valve seat formed on the sleeve seals against the action of a spring displacing the sleeve against the valve body, and that the hand lever moves the sleeve against the force of the spring when actuated.
  • a displaceable part of a closing valve is not located inside a pipe, but the two adjoining lines are sealed off from one another by a sleeve pushed over both lines.
  • This sleeve is displaceable in the axial direction on the two pipe ends and lies in an end position with a valve seat sealingly against one formed by a line Valve body so that the passage is closed. In another end position, the sleeve is moved on the two pipe ends so that the valve body abuts the valve seat and a passage is made between the two pipe pieces.
  • the moving part of the closing valve is not arranged inside the pipes, but is located on the outside of the pipes, actuating levers do not have to be passed into the inside of the pipes.
  • This results in a particularly simple construction since the closing valve can also be assembled in a simple manner by pushing pipe pieces into a sleeve from two sides.
  • the sleeve can also be designed by a suitable choice of spring force so that it can be moved easily and essentially independently of the pressure of the liquid from one position to the other, i.e. there is also a considerable relief in operation compared to known hand-held spray guns.
  • lateral wall openings are arranged in the line carrying the valve body, which connect the inside of the line with an annular space between the inner wall of the sleeve and the outer wall of the line. This annulus is either closed or released by the valve body and the valve seat.
  • the valve body can be designed as a valve plate closing the end face and the valve seat as an annular shoulder projecting into the interior of the sleeve. This results in particularly simple structural designs.
  • the spring is arranged inside the sleeve and is a helical spring which is supported on annular shoulders or the sleeve on the one hand and the connecting pipe piece on the other. This results in a particularly space-saving construction, and the arrangement can also be assembled in the simplest way.
  • Both lines are preferably sealed against the inner wall of the sleeve by O-ring seals inserted in circumferential grooves, so that no further sealing measures are necessary.
  • the hand lever When actuated, the hand lever can press on an end face of the sleeve; this pressure is preferably applied symmetrically on two diametrically opposite sides of the sleeve in order to avoid tilting.
  • the outlet line ends in a tube nipple inserted into the sleeve, which in turn is inserted in a sealed manner into a tube piece which is fixed in the housing.
  • This pipe nipple can carry an annular flange which is received in a complementary recess of the housing, so that in this way this pipe nipple and thus the outlet line in the housing is secured against displacement in the axial direction in both directions.
  • the feed line preferably carries an annular flange which is supported on a support surface of the housing. This also facilitates assembly, since when the housing is open, the line is simply placed laterally on the support surface, and in addition the supply line is held in the housing so that it can rotate freely about its longitudinal axis, so that the supply line is mounted without torsion.
  • the hand-held spray gun partially shown in the drawing for a high-pressure cleaning device is connected to a high-pressure hose 1 of a high-pressure cleaning device known per se and not shown in the drawing.
  • this high-pressure hose 1 carries at its end a connecting pipe section 2 which enters a housing 3.
  • the housing 3 is preferably made of plastic and is constructed from two half-shells which are constructed in mirror image and can be joined together along the longitudinal center plane of the housing.
  • a further pipe section 4 is mounted in the housing, which exits from the front of the housing and can be connected, for example, to a spray tube placed on the gun and carrying a high-pressure nozzle.
  • the connecting pipe section 2 and the pipe section 4 form an angle with one another in order to make a connection here, the pipe section 4 is bent at its end close to the connecting pipe section 2.
  • the connecting pipe section 2 is designed as a pipe nipple 5, which is inserted into a sleeve 6 for connection to the pipe section 4.
  • Their clear width is larger than the outer diameter of the pipe nipple 5, so that an annular space 7 is formed between this and the inner wall of the sleeve 6, in which there is a coil spring 8 surrounding the pipe nipple 5.
  • This is supported on the one hand on an annular collar 8a arranged on the pipe nipple 5 and on the other hand on an annular shoulder 9ab projecting into the interior of the sleeve 6.
  • the pipe nipple 5 may be missing, that is, the connecting pipe piece 2 then ends with the collar 8a, on which the coil spring 8 is supported in the same manner as in the embodiment shown in the drawing.
  • the pipe section 4 projects into the sleeve 6 from the other side by means of a pipe nipple 12.
  • the pipe nipple 12 is sealed against the sleeve 6 by means of an O-ring seal 14 inserted into a circumferential groove 13.
  • a projecting ring flange 15 of the pipe section 4 is mounted in a corresponding recess 26 in the housing and in this way fixes the pipe nipple 12 in the housing.
  • the pipe nipple 12 is in turn inserted into the pipe section 4 and sealed against its inner wall by an O-ring seal 17 inserted into a circumferential groove 16.
  • the pipe nipple 12 In the area between the circumferential groove 13 and its end, the pipe nipple 12 has a reduced outer diameter, so that an annular space 18 is formed between it and the inner wall 11 of the sleeve 6, which has openings 19 in the wall of the pipe nipple 12 with the interior 20 of the pipe nipple communicates.
  • the pipe nipple 12 is closed by a valve body designed as a valve plate 21, which is supported on the annular shoulder 9 of the sleeve 6 acting as a valve seat 22 and thereby closes the annular space 18 in the direction of the through opening 23 surrounded by the annular shoulder 9.
  • the pipe nipple 12, the sleeve 6 and the connecting pipe section 2 are arranged coaxially, the connecting pipe section 2 is freely rotatable about its longitudinal axis.
  • the mutual distances between the support surface 25 on the one hand and the recess 26 receiving the annular flange 15 on the other hand are selected such that the helical spring 8 is tensioned, ie, under the action of this helical spring 8 the sleeve 6 is displaced such that the valve seat 22 seals on the valve plate 21 is present.
  • a hand lever 28 is pivotally mounted, which is on diametrically opposite sides of the pipe section 4 on the end face 29 of the sleeve 6 carries projections 30, which move the sleeve 6 against the action of the coil spring 8 when the hand lever 28 is pivoted, so that the valve seat 22 is removed from the valve plate 21 and a passage from the connecting pipe section 2 to the pipe section 4 is released.
  • the sleeve 6 is shown in the closed position with solid lines, in the open position with dash-dotted lines.
  • this hand spray gun is extremely simple, it is sufficient to insert the connecting pipe piece with the inserted O-ring seal 10 and the pushed-on helical spring 8 into the sleeve 6 on one side.
  • the pipe nipple 12 provided with the O-ring seal 17 is pushed into the pipe section 4, this unit is then pushed into the sleeve together with the O-ring seal 14 from the opposite side.
  • This assembly is inserted into one of the two housing halves in the manner described, and the housing is closed by placing the second housing half on it. It is not necessary to make further connections by gluing, screwing or welding, so that the entire arrangement can also be disassembled in a simple manner, for example in order to replace wearing parts.
  • valve seat In contrast to conventional closing valves, in the arrangement described, not a valve body is moved relative to a valve seat, but conversely, the valve seat is moved relative to a fixed valve body.
  • This valve seat is arranged on the outer sleeve, so that it is not necessary to enter the interior of the connecting pipe or the outlet pipe in order to arrange closing valves there.
  • this also has the advantage that the Sleeve can be opened by choosing a suitable coil spring 8 with very low opening forces, which moreover can be chosen largely independently of the pressure of the liquid supplied.
  • a lock 31 is also provided for the hand lever 28, which secures it against unintentional actuation.

Landscapes

  • Nozzles (AREA)

Claims (10)

  1. Pistolet de pulvérisation pour un appareil de nettoyage à haute pression comprenant un corps (3) qui renferme une conduite (2) d'amenée de liquide, une conduite de sortie (4) et une soupape de fermeture, et qui présente un levier à main (28) servant à ouvrir la soupape de fermeture, caractérisé en ce que la conduite (2) d'amenée du liquide est emmanchée à joint étanche dans un manchon (6), en ce que la conduite de sortie (4) est emmanchée à joint étanche dans le même manchon (6) par le côté opposé, en ce qu'une des deux conduites (2, 4) forme à l'intérieur du joint d'étanchéité un élément de soupape (21), contre lequel un siège de soupape (22) formé sur le manchon (6) est appuyé à joint étanche sous l'action d'un ressort (8) qui pousse le manchon (6) vers l'élément de soupape (21), et en ce que le levier à main (28) repousse le manchon (6) à l'encontre de la force du ressort (8) lorsqu'il est actionné.
  2. Pistolet de pulvérisation selon la revendication 1, caractérisé en ce que, dans la conduite (12) qui porte l'élément de soupape (21) sont prévues des ouvertures latérales (19) de la paroi, qui relient l'intérieur (20) de la conduite (12) à un espace annulaire (18) ménagé entre la paroi intérieure (11) du manchon (6) et la paroi extérieure de la conduite (12).
  3. Pistolet de pulvérisation selon la revendication 2, caractérisé en ce que l'élément de soupape (21) est constitué par un plateau de soupape qui obture la conduite (12) sur sa face frontale, et le siège de soupape (22) est constitué par un épaulement annulaire (9) qui fait saillie dans le volume intérieur du manchon (6).
  4. Pistolet de pulvérisation selon une des revendications précédentes, caractérisé en ce que le ressort (8) est disposé à l'intérieur du manchon (6) et est constitué par un ressort hélicoïdal (8) qui prend appui sur des épaulements annulaires (9 et 8a respectivement) du manchon (6), d'une part, et du tronçon de tube de raccordement (2), d'autre part.
  5. Pistolet de pulvérisation selon une des revendications précédentes, caractérisé en ce que les deux conduites (2, 12) sont montées à joint étanche contre la paroi intérieure du manchon (6) par des bagues d'étanchéité toriques (10 et 14 respectivement) logées dans des gorges circonférentielles.
  6. Pistolet de pulvérisation selon une des revendications précédentes, caractérisé en ce que le levier à main (28) exerce une pression sur une surface frontale (29) du manchon (6) lorsqu'il est actionné.
  7. Pistolet de pulvérisation selon une des revendications précédentes, caractérisé en ce que la conduite de sortie (4) se termine par un embout mâle (12) emmanché dans le manchon (6) et qui, de son côté, est emmanché à joint étanche dans une pièce tubulaire qui est fixée dans le corps (3).
  8. Pistolet de pulvérisation selon la revendication 7, caractérisé en ce que l'embout mâle (12) porte une collerette annulaire (15) qui se loge dans un évidement complémentaire (26) du corps (3).
  9. Pistolet de pulvérisation selon une des revendications précédentes, caractérisé en ce que la conduite d'amenée (2) porte une collerette annulaire (24) qui s'appuie sur une surface d'appui (25) du corps (3).
  10. Pistolet de pulvérisation selon une des revendications précédentes, caractérisé en ce que les aires de section du manchon (6) qui sont exposées à l'action du liquide sous pression sont choisies de manière que le liquide exerce sur le manchon (6) une force résultante qui pousse le manchon (6) dans le sens de la fermeture.
EP90118066A 1989-10-06 1990-09-20 Pistolet d'arrosage pour un dispositif de nettoyage à haute pression Expired - Lifetime EP0421194B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3933386 1989-10-06
DE3933386A DE3933386C1 (fr) 1989-10-06 1989-10-06

Publications (3)

Publication Number Publication Date
EP0421194A2 EP0421194A2 (fr) 1991-04-10
EP0421194A3 EP0421194A3 (en) 1992-05-27
EP0421194B1 true EP0421194B1 (fr) 1995-06-14

Family

ID=6390950

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90118066A Expired - Lifetime EP0421194B1 (fr) 1989-10-06 1990-09-20 Pistolet d'arrosage pour un dispositif de nettoyage à haute pression

Country Status (3)

Country Link
EP (1) EP0421194B1 (fr)
DE (2) DE3933386C1 (fr)
DK (1) DK0421194T3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD654234S1 (en) 2010-12-08 2012-02-14 Karcher North America, Inc. Vacuum bag
US8302240B2 (en) 2009-07-29 2012-11-06 Karcher North America, Inc. Selectively adjustable steering mechanism for use on a floor cleaning machine
US8438685B2 (en) 2003-05-14 2013-05-14 Karcher North America, Inc. Floor treatment apparatus
USD693529S1 (en) 2012-09-10 2013-11-12 Karcher North America, Inc. Floor cleaning device
US8887340B2 (en) 2003-05-14 2014-11-18 Kärcher North America, Inc. Floor cleaning apparatus
US8978190B2 (en) 2011-06-28 2015-03-17 Karcher North America, Inc. Removable pad for interconnection to a high-speed driver system

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4115395A1 (de) * 1991-04-30 1992-11-05 Woma Maasberg Co Gmbh W Spritzpistole zum verspruehen eines druckmittels
DE19503101C1 (de) * 1995-02-01 1995-12-07 Kaercher Gmbh & Co Alfred Handspritzpistole
IT239261Y1 (it) * 1995-11-07 2001-02-26 Annovi & Reverberi S P A Lancia per dispositivi di lavaggio ad alta pressione
US6812327B1 (en) 1996-10-25 2004-11-02 Human Genome Sciences, Inc. Neutrokine-alpha polypeptides
DE19739943A1 (de) * 1997-09-11 1999-03-18 Wap Reinigungssysteme Handabschaltpistole für Hochdruckreinigungsgeräte
DE19743094A1 (de) * 1997-09-30 1999-04-01 Wap Reinigungssysteme Abschaltpistole für ein Hochdruckreinigungsgerät mit Antiverdreheinrichtung für den Hochdruckschlauch
US20040226584A1 (en) 2003-05-14 2004-11-18 Michael Guest Multifunctional surface cleaning machine and method of using the same
EP3618676B1 (fr) 2017-05-04 2023-09-20 Alfred Kärcher SE & Co. KG Appareil de nettoyage de sol et méthode de nettoyage d'une surface au sol
USD907868S1 (en) 2019-01-24 2021-01-12 Karcher North America, Inc. Floor cleaner

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431020A (en) * 1981-10-08 1984-02-14 Marotta Scientific Controls, Inc. Flow-control system having a wide range of flow-rate control

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
US3311342A (en) * 1966-01-26 1967-03-28 Jorgen D Bering Sleeve-type line valve
DE2556299B2 (de) * 1975-12-13 1978-01-12 Hubert Schell Kg, 5960 Olpe Kesselfuell- und -entleerungsventil
US4128209A (en) * 1977-09-12 1978-12-05 Scovill Manufacturing Company Air gun
DE3720241C2 (de) * 1986-09-26 1994-09-22 Wolfgang Suttner Ventilpistole für ein Hochdruckreinigungsgerät

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431020A (en) * 1981-10-08 1984-02-14 Marotta Scientific Controls, Inc. Flow-control system having a wide range of flow-rate control

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8438685B2 (en) 2003-05-14 2013-05-14 Karcher North America, Inc. Floor treatment apparatus
US8528142B1 (en) 2003-05-14 2013-09-10 Karcher North America, Inc. Floor treatment apparatus
US8887340B2 (en) 2003-05-14 2014-11-18 Kärcher North America, Inc. Floor cleaning apparatus
US9015887B1 (en) 2003-05-14 2015-04-28 Kärcher North America, Inc. Floor treatment apparatus
US9192276B2 (en) 2003-05-14 2015-11-24 Karcher North America, Inc. Floor cleaning apparatus
US9451861B2 (en) 2003-05-14 2016-09-27 Kärcher North America, Inc. Floor treatment apparatus
US9510721B2 (en) 2003-05-14 2016-12-06 Karcher North America, Inc. Floor cleaning apparatus
US8302240B2 (en) 2009-07-29 2012-11-06 Karcher North America, Inc. Selectively adjustable steering mechanism for use on a floor cleaning machine
USD654234S1 (en) 2010-12-08 2012-02-14 Karcher North America, Inc. Vacuum bag
US8978190B2 (en) 2011-06-28 2015-03-17 Karcher North America, Inc. Removable pad for interconnection to a high-speed driver system
USD693529S1 (en) 2012-09-10 2013-11-12 Karcher North America, Inc. Floor cleaning device

Also Published As

Publication number Publication date
EP0421194A2 (fr) 1991-04-10
EP0421194A3 (en) 1992-05-27
DE9004299U1 (de) 1990-08-09
DE3933386C1 (fr) 1990-12-13
DK0421194T3 (da) 1995-08-14

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