EP1621254A2 - Pistolet à commande manuelle avec levier à main équilibré en pression - Google Patents

Pistolet à commande manuelle avec levier à main équilibré en pression Download PDF

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Publication number
EP1621254A2
EP1621254A2 EP05016042A EP05016042A EP1621254A2 EP 1621254 A2 EP1621254 A2 EP 1621254A2 EP 05016042 A EP05016042 A EP 05016042A EP 05016042 A EP05016042 A EP 05016042A EP 1621254 A2 EP1621254 A2 EP 1621254A2
Authority
EP
European Patent Office
Prior art keywords
valve
bore
pressure
handabschaltpistole
actuating rod
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.)
Granted
Application number
EP05016042A
Other languages
German (de)
English (en)
Other versions
EP1621254B1 (fr
EP1621254A3 (fr
Inventor
Bernd Winkler
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.)
Alto Deutschland GmbH
Original Assignee
Alto Deutschland 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 Alto Deutschland GmbH filed Critical Alto Deutschland GmbH
Publication of EP1621254A2 publication Critical patent/EP1621254A2/fr
Publication of EP1621254A3 publication Critical patent/EP1621254A3/fr
Application granted granted Critical
Publication of EP1621254B1 publication Critical patent/EP1621254B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B1/3006—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 actuated by the pressure of the fluid 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
    • 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
    • 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
    • B05B1/302—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 with a ball-shaped valve member

Definitions

  • the invention relates to a manual shut-off pistol with pressure-relieved hand lever, in particular for high-pressure cleaning devices, according to the preamble of patent claim 1.
  • DE 101 59 680 C1 and WO 03 / 045572A1 show a closing device for the liquid discharge line of a high-pressure cleaner with a arranged in the liquid discharge line closing body, which is pressed with a closing force against a valve seat, thereby closing the liquid discharge line and by a mechanical, sealed off the liquid discharge line escaping and displaceable by means of a hand lever actuating element can be lifted from the valve seat when the hand lever is moved in the direction of an open position.
  • a displaceably mounted piston emerges sealed from the liquid discharge line and when pushing out of the liquid discharge line in operative connection with the hand lever that this moves in the direction of its open position becomes.
  • Object of the present invention is, starting from the above-described prior art, to provide a Handabschaltpistole with pressure-relieved lever, which is designed much simpler and thus cheaper and more reliable and also can cause a greater force on the hand lever.
  • the actuating rod has at least one stage of greater radial dimension than its base body, so that within the actuating bore results in a high-pressure chamber and a low-pressure space, and that downstream of the valve, between the liquid discharge line and the high-pressure chamber extends a pressure-conducting control bore.
  • control bore located downstream of the valve between the liquid discharge line and the high-pressure chamber of the actuating bore directs the media pressure on the back of the trained as a stepped piston actuating rod of the valve.
  • the actuating bore for the actuating rod is divided into a first and a second space. Since the control bore forms a pressure-conducting connection between the media delivery line and one of the spaces of the actuating bore for the actuating rod, this space is referred to as the high-pressure chamber, since the medium pressure is present in this high-pressure chamber when the valve is opened.
  • the second chamber Separated from this high-pressure chamber via the at least one radially extending step, the second chamber, which has a lower pressure, than the high-pressure chamber, when the media pressure prevails there after opening the valve. Therefore, the second space is referred to as a low pressure chamber, which is either hermetically sealed or connected via a vent hole with the environment, so that there is always ambient pressure of about 1 bar in the low pressure space.
  • the low pressure space is connected via a vent hole with the environment, in which case the manual force of the user during opening and keeping the valve open by the force difference is supported on the step collar of the actuating rod between the high pressure chamber and low pressure space, against the force of the valve spring ,
  • F ( hand ) F ( feather ) - ( p ( medium ) - p ( Surroundings ) ) ⁇ A
  • the surface of the ring stage of the operating rod is always chosen so that the hand force never zero, so that when you release the hand lever, the valve always reliably automatically closes.
  • the low-pressure chamber is arranged closer to the valve spring than the high-pressure chamber and therefore the valve is opened by pushing the actuating rod on the valve body against the force of the valve spring as a compression spring.
  • the high-pressure chamber is arranged closer to the valve spring than the low-pressure chamber and therefore the valve is opened by pulling the actuating rod together with the valve body against the force of the valve spring as a compression spring.
  • the invention can be very reasonably priced integrate into existing designs of Handabschaltpistole, so that a simple retrofitting of old models of Handabschaltpistole is easily possible.
  • the complete stepped piston as a replacement set in the form of a cartridge solution, so that not only the stepped piston is replaceable, but also a surrounding this cartridge, which is then interchangeable arranged in the gun body. This allows a simple adaptation to different media pressures done, as well as to different valve inserts with differently biased valve spring.
  • Handabschaltpistole invention is shown in a sectional partial view, with the main components gun housing 1, lever 2 and valve. 5
  • the hand lever 2 is arranged in the upper region on the gun housing 1 and there in pivoting directions 4 and 4 'pivotally mounted on a pivot axis 3. If the hand lever 2 in the pivoting direction 4 (counterclockwise) operated by a user, the valve 5 is opened, wherein the retrieval of the hand lever 2 in the pivoting direction 4 '(clockwise) by means of the spring 15 of the valve via the actuating rod 16.
  • the valve 5 locks in the idle state, the liquid discharge line 6 and separates them into an upper part 7, in which the operating pressure of the liquid prevails, and an upper part 7 angled, lower part 8, which is depressurized at rest.
  • the separation of the upper 7 and lower part 8 of the liquid discharge line 6 is accomplished by a located in the upper part 8 valve ball 14 which is pressed by means of the compression coil spring 15 (also located in the upper part 8) on a valve seat 13.
  • the valve seat 13 is located on the transition edge of a stepped bore 11 a with a first smaller 11 b and second larger diameter 11 c in a valve housing 11 which is releasably inserted via a seal 12 in the gun body 1, depending on the medium and operating pressure different valves. 5 to be able to use.
  • valve ball 14 which has a free end of the actuating rod 16, wherein on the other free end of the actuating rod 16 of the hand lever 2 rests with its reinforcement 2a.
  • the actuating rod 16 is in this case received in an actuating bore 18 sealed by seals 20, wherein the actuating bore 18 has a lower annular collar 19 which serves as an end stop for the axial movement of the actuating rod 16, which by an upper screwed and sealed end cap 23 from falling out is secured.
  • the actuating rod 16 itself is stepped and has two annular steps 17 of larger diameter than the rod-shaped base 16 a of the actuating rod 16.
  • the actuating rod 16 is guided in its axial movement 24 on the one hand to its base 16 a through the annular collar 19 of the bore 18, on the other hand by means of the steps 17 of the actuating rod 16, which engage radially on the inner wall of the bore 18 sliding and continue by radial contact of the Main body 16a at a through hole 23b of the end cover 23, so that tilting of the actuating rod 16 in the bore 18 is thereby prevented.
  • a seal 20 is present, as well as above the upper stage 17 in the region of the lid 23 and below the annular collar 19 of the bore 18. All seals 20 have the purpose of the under operating pressure medium (eg water ) not to let escape undesirably through the bore 18 from the gun body 1, but through the discharge line 6 in the flow direction 9 out of the outlet 10, which is designed as a nozzle (not shown).
  • under operating pressure medium eg water
  • a control bore 22 in the gun housing 1 is now introduced in the lower part 8, downstream of the valve 5, which forms a pressure-conducting connection between the discharge line 6 and the high-pressure chamber 25 in the actuating bore 18.
  • the control bore 22 thus extends from the downstream of the valve 5 located lower part 8 of the discharge line 6 to behind the outer annular end face 17a of the last stage 17 of the actuating rod 16, which outer end face 17a of the spring 15 of the valve 5 faces away.
  • the high-pressure chamber 25 is thus formed by the outer annular end face 17a of the last, outermost step 17 (farthest from the spring 15) and by the main body 16a in this end region, and by the inner wall of the actuating bore 18 in this outer end region and the inner recess 23a of the end cover 23 and, if necessary, a seal 20a introduced between the last, outermost step 17 and the end cover 23.
  • a low pressure space 26 is formed, which is connected through a vent hole 21 to the environment, so that in the low-pressure chamber 26 always Ambient pressure prevails in order not to undesirably damp the axial movement of the actuating rod 16 in the bore 18.
  • the end cap 23, the operating rod 16 having steps 17, the associated bore 18, the valve body 11 and the discharge conduit 6 are preferably circular in cross-section, but may be of any other shapes, e.g. polygonal, square, rectangular, triangular, ellipsoidal, oval, etc.
  • the term "bore" is to be understood very broadly and is not bound to any particular machining process so that the holes can be made by other manufacturing techniques, e.g. EDM process, injection molding, etc.
  • the user moves the hand lever 2 in the direction 4 downwards in FIG. 1, so that the hand lever 2 presses on the outermost free end of the actuating rod 16 and moves axially downwards in the direction 24, whereby the valve ball 14 is pressed down against the spring force of the spring 15 and lifts off from the valve seat 13.
  • the valve ball 14 is pressed down against the spring force of the spring 15 and lifts off from the valve seat 13.
  • a very small part of the pressure medium flows in this case initially through the control bore 22 in the high-pressure chamber 25 in the bore 18 and builds here on the operating pressure to hold the operating rod 16 in the pressed down in the direction 24 operating position and to support the holding force of the user , From the low pressure chamber 26, the air escapes through the vent hole 21 in the open.
  • the operating pressure located in the lower part 8 of the discharge line 6 and in the control bore 22 in the high-pressure chamber 25 is discharged via the discharge nozzle 10 into the atmosphere, in order to bring the actuating rod 16 counter to the direction 24 in the upper rest position. Through the vent hole 21, air is sucked from the environment in the low-pressure chamber 26.
  • the control bore 22 thus fulfills the purpose, after actuation of the hand lever 2, to hold this in its depressed operating position and thereby to support the holding force of the user.
  • the control bore 22 does not fulfill the purpose of keeping the operating position without manual force of the user, so that after releasing the hand lever 2, this returns to its original position and thereby closes the valve 5.
  • FIG 2 shows a schematic diagram of Handabschaltpistole of Figure 1, wherein like reference numerals represent like components. It can be seen that the low-pressure chamber 26 is arranged closer to the valve spring 15, as the high-pressure chamber 25 and therefore the valve 5 is lifted by thrust of the actuating rod 16 against the valve body 14 against the force of the valve spring 15 from the seat 13 and opens.
  • FIG. 3 shows a schematic diagram of the manual shut-off pistol in an alternative to FIG. 1, wherein the same reference numbers again represent identical components. It can be seen that the high-pressure chamber 25 is arranged closer to the valve spring 15 than the low-pressure chamber 26 and therefore the valve 5 is lifted by train of the actuating rod 16 together with the valve body 14 against the force of the valve spring 15 from the seat 13 and opened.

Landscapes

  • Nozzles (AREA)
EP05016042A 2004-07-31 2005-07-23 Pistolet à commande manuelle avec levier à main équilibré en pression Not-in-force EP1621254B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004037316A DE102004037316A1 (de) 2004-07-31 2004-07-31 Handabschaltpistole mit druckentlastetem Handhebel

Publications (3)

Publication Number Publication Date
EP1621254A2 true EP1621254A2 (fr) 2006-02-01
EP1621254A3 EP1621254A3 (fr) 2007-05-02
EP1621254B1 EP1621254B1 (fr) 2008-05-07

Family

ID=35106928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05016042A Not-in-force EP1621254B1 (fr) 2004-07-31 2005-07-23 Pistolet à commande manuelle avec levier à main équilibré en pression

Country Status (2)

Country Link
EP (1) EP1621254B1 (fr)
DE (2) DE102004037316A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1886732A1 (fr) * 2006-08-11 2008-02-13 Suttner GmbH Agencement de vannes avec une force d'actionnement réduite
WO2017178073A1 (fr) * 2016-04-15 2017-10-19 Alfred Kärcher Gmbh & Co. Kg Pistolet à soupape pour nettoyeur haute pression
CN108894151A (zh) * 2018-08-14 2018-11-27 李宏伟 中近距离感应触发的溢水式防跨越护栏
CN108894152A (zh) * 2018-08-14 2018-11-27 李宏伟 触控溢水式防跨越护栏
CN110312577A (zh) * 2017-02-07 2019-10-08 基伊埃图亨哈根有限责任公司 罐清洁喷嘴，包含其的罐以及用于清洁罐的方法
CN110685210A (zh) * 2019-09-05 2020-01-14 高玉华 一种路桥施工用划线装置
CN112206940A (zh) * 2020-10-09 2021-01-12 王小安 一种具有补偿结构的高压水枪

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10159680C1 (de) 2001-11-30 2003-05-08 Kaercher Gmbh & Co Alfred Schließvorrichtung für die Flüssigkeitsabgabeleitung eines Hochdruckreinigungsgerätes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2424321A1 (de) * 1974-05-18 1975-11-20 Woma Maasberg Co Gmbh W Absperrventil fuer hohe und hoechste drucke, insbesondere fuer hochdruckspritzpistolen
DE19650379A1 (de) * 1996-12-05 1998-06-18 Suttner Gmbh & Co Kg Ventilanordnung mit direkt betätigtem Ventilkörper
DE29624335U1 (de) * 1996-12-05 2002-05-02 Suttner Gmbh & Co Kg, 33689 Bielefeld Ventilanordnung mit direkt betätigtem Ventilkörper
US6000637A (en) * 1998-01-20 1999-12-14 Duncan; Gordon High pressure water gun

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10159680C1 (de) 2001-11-30 2003-05-08 Kaercher Gmbh & Co Alfred Schließvorrichtung für die Flüssigkeitsabgabeleitung eines Hochdruckreinigungsgerätes
WO2003045572A1 (fr) 2001-11-30 2003-06-05 Alfred Kärcher Gmbh & Co. Kg Dispositif de fermeture destine au conduit de distribution de liquide d'un appareil de nettoyage sous haute pression
EP1389495A1 (fr) 2001-11-30 2004-02-18 Alfred Kärcher GmbH & Co. KG Dispositif de fermature destiné au conduit de distribution de liquide d'un appareil de nettoyage sous haute pression
DE10237428B3 (de) 2001-11-30 2004-04-15 Alfred Kärcher Gmbh & Co. Kg Schließvorrichtung für die Flüssigkeitsabgabeleitung eines Hochdruckreinigungsgerätes

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1886732A1 (fr) * 2006-08-11 2008-02-13 Suttner GmbH Agencement de vannes avec une force d'actionnement réduite
WO2017178073A1 (fr) * 2016-04-15 2017-10-19 Alfred Kärcher Gmbh & Co. Kg Pistolet à soupape pour nettoyeur haute pression
CN109070106A (zh) * 2016-04-15 2018-12-21 阿尔弗雷德·卡赫欧洲两合公司 用于高压清洁设备的阀枪
CN109070106B (zh) * 2016-04-15 2021-05-14 阿尔弗雷德·卡赫欧洲两合公司 用于高压清洁设备的阀枪
CN110312577A (zh) * 2017-02-07 2019-10-08 基伊埃图亨哈根有限责任公司 罐清洁喷嘴，包含其的罐以及用于清洁罐的方法
CN108894151A (zh) * 2018-08-14 2018-11-27 李宏伟 中近距离感应触发的溢水式防跨越护栏
CN108894152A (zh) * 2018-08-14 2018-11-27 李宏伟 触控溢水式防跨越护栏
CN110685210A (zh) * 2019-09-05 2020-01-14 高玉华 一种路桥施工用划线装置
CN112206940A (zh) * 2020-10-09 2021-01-12 王小安 一种具有补偿结构的高压水枪

Also Published As

Publication number Publication date
DE102004037316A1 (de) 2006-03-23
EP1621254B1 (fr) 2008-05-07
DE502005003951D1 (de) 2008-06-19
EP1621254A3 (fr) 2007-05-02

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