EP1996337A1 - Hochdruckspritzpistole für ein hochdruckreinigungsgerät - Google Patents
Hochdruckspritzpistole für ein hochdruckreinigungsgerätInfo
- Publication number
- EP1996337A1 EP1996337A1 EP06723617A EP06723617A EP1996337A1 EP 1996337 A1 EP1996337 A1 EP 1996337A1 EP 06723617 A EP06723617 A EP 06723617A EP 06723617 A EP06723617 A EP 06723617A EP 1996337 A1 EP1996337 A1 EP 1996337A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spray gun
- valve housing
- pressure spray
- insert part
- 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.)
- Withdrawn
Links
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/01—Spray pistols, discharge devices
Definitions
- the invention relates to a high-pressure spray gun for a high-pressure cleaner with a housing in which a valve is arranged, which is openable by means of a movably held actuator and to which a liquid supply line is connected, wherein the valve has a valve housing, in which a sealing applied to a sealing surface and is held movably with the actuating element cooperating closing body.
- Such high-pressure spray guns are used for high-pressure cleaning devices and make it possible to direct the cleaning fluid pressurized by the high-pressure cleaning device onto a surface to be cleaned, wherein the discharge quantity of the cleaning fluid can be regulated by means of the high-pressure spray gun.
- the flow of the cleaning liquid can be interrupted by means of the high-pressure spray gun.
- the cleaning fluid is pressurized by the high pressure cleaner and directed to the high pressure spray gun via a high pressure hose.
- the high-pressure spray gun has a valve which can be opened by the user by means of an actuating element. If the actuating element, usually a pivoting lever, is released by the user, the closing body automatically moves into its closed position, in which the flow of the cleaning fluid is interrupted. When the valve is closed, a very high pressure forms briefly during operation of the high-pressure cleaning device upstream of the valve. This has the consequence that the valve is exposed to a considerable pressure load.
- the valve is therefore usually made of metal, for example in the form of a cast or turned part. This is stated in the European disclosure EP 0 261 320 A2. High pressure spray guns of the type mentioned are known from the patent DE 10 2004 006 592 B3.
- Object of the present invention is to develop a high pressure spray gun of the type mentioned in such a way that it is inexpensive to produce and yet can be exposed to high pressure load.
- valve housing is made of plastic material and that an insert part is held on the valve housing, wherein the insert is made of a pressurized water-resistant material and the sealing surface and an upstream of the sealing surface arranged inlet channel is formed, which is connectable to the liquid supply line.
- a valve housing made of plastic material is used for cost-effective production of the high pressure spray gun according to the invention.
- a valve housing made of plastic can be manufactured at a relatively low cost.
- Cost-effective plastic material however, has only limited resistance to liquids that are under pressure. In many cases, the plastic material will become brittle in a relatively short time.
- the sealing surface and an upstream of the sealing surface arranged inlet channel of the valve are formed by an insert which is made of a pressurized water resistant material and which is held on the valve housing. The insert gives the valve the required strength against the pressurized cleaning liquid, so preferably pressurized water to which a cleaning chemical may be added.
- the mechanical forces that the insert part in operation of the high-pressure spray gun can be accommodated by the valve housing to which the insert is held, but the insert ensures the required pressure water resistance of the valve, in particular, the insert ensures the tightness of the valve.
- the insert is designed watertight, is held on the valve body and can be connected to the liquid supply line.
- the insert part forms a pressurized water-resistant inlet channel upstream of the sealing surface.
- the area downstream of the sealing surface may be formed by the valve housing made of plastic material, since this area is exposed during operation of the high pressure spray gun to a lower pressure than the area upstream of the sealing surface.
- the valve housing may for example be made of polyamide material or polypropylene material. This allows a particularly cost-effective production.
- the valve housing is made of a fiber-reinforced plastic material, in particular of a glass fiber reinforced plastic material. It can be provided, for example, that the valve housing is made of glass fiber reinforced polyamide or polypropylene material.
- the insert is characterized by a high pressure water resistance. It is preferably made of metal, in particular of brass.
- the insert is made using polyoxymethylene (POM), polyethylene (PE) and / or polyurethane (PU). These materials are also characterized by a high pressure water durability, so that the high pressure spray gun according to the invention satisfies all safety requirements despite the use of inexpensive plastic material for the valve housing.
- POM polyoxymethylene
- PE polyethylene
- PU polyurethane
- the valve housing has a chamber into which the insert part is immersed at least with a front end region in the flow direction.
- This allows a structurally simple mounting of the insert part on the valve housing.
- the insert part can be fixed for example in its dipping into the chamber area by means of a retaining clip on the valve housing.
- the chamber of the valve housing completely accommodates the insert part.
- Such a configuration is particularly favorable when the insert is made of plastic material, because by inserting the insert into the chamber optimal power transmission from the insert to the valve body can be achieved in a simple manner.
- the insert part can be designed with a low material thickness and lining the chamber of the valve housing on the inside. The insert ensures the pressure water resistance of the valve, occurring forces are transferred from the insert to the valve body.
- a particularly preferred embodiment of the high-pressure spray gun according to the invention is characterized in that the valve housing forms a jacket, which encloses the insert part. This allows a flat contact of the insert part in the entire circumferential region, so that acting on the insert pressure forces can be absorbed evenly from the valve housing.
- the wall thickness of the insert part can thereby be kept relatively low, since it does not have to have a very high mechanical stability.
- the insert only has to take over the function, the valve design pressure water resistant, so that even a permanent load on the valve with pressurized cleaning fluid to no damage, especially to no leakage.
- At least one sealing element is arranged between the insert part and the valve housing. It can be provided, for example, that the insert part is surrounded by at least one sealing ring in the circumferential direction.
- the insert part forms an insertion section for insertion of a plug-in nipple.
- the high-pressure hose can carry at its free end a connection fitting with a plug-in nipple, which can be inserted into the insertion section of the insert part.
- An additional liquid supply line of the high-pressure spray gun for example a pipe section arranged in the housing of the high-pressure spray gun, can thereby be dispensed with.
- a particularly simple determination of the high-pressure hose on the insert part is achieved in a preferred embodiment in that the insert part and the valve housing at the level of the insertion section aligned with each other have lateral openings for receiving a cooperating with the plug-nipple securing bracket.
- the insert part like the valve housing, may have two diametrically opposite lateral openings, into each of which a section of a securing bracket enclosing the valve housing can be inserted.
- the safety bar can in the usual way a circumferential collar of the plug nipple engage behind, so that it is held by the securing bracket in the axial direction immovably in the insertion of the insert part.
- FIG. 1 shows a schematic sectional view of a high-pressure spray gun according to the invention
- FIG. 2 shows an enlarged sectional view of the valve of the high-pressure spray nozzle from FIG. 1 and FIG.
- FIG. 3 shows a perspective view of the valve from FIG. 2.
- a high-pressure spray gun designated overall by the reference numeral 10, with a plastic housing 11 formed from two half-shells, which forms a grip region 12 with a handle 13 and a protective bow 14 and an outlet region 15 with an outlet 16.
- the housing 11 receives a valve 20 with a made of plastic material, in particular made of glass fiber reinforced polyamide or polypropylene material valve housing 21 and made of pressurized water resistant material, in particular made of brass insert 22 which is held on the valve housing 21 by placing it in a Chamber 23 of the valve housing 21 is inserted.
- the valve housing 21 is substantially Y-shaped, wherein the insert part 22 is arranged in a base part 25 of the valve housing 21, from facing away from each other, a first housing leg 26 and a second housing leg 27 protrude.
- the first housing leg 26 forms an outlet line 29.
- a pipe section 30 is connected, which extends to the outlet 16 of the housing 11. In the region of the outlet 16, a per se known spray lance can be connected to the pipe section 30 via a bayonet coupling 32.
- the free end of the second housing leg 27 forms a bearing 34, on which an actuating element in the form of a hand lever 35 is pivotably mounted.
- the hand lever 35 extends from the bearing 34 into the area between the handle 13 and the guard 14 and can be encompassed in this area by the user by hand.
- the insert part 22 is designed in the form of a bush which is completely surrounded in the circumferential direction by the base part 25 of the valve housing 21.
- the insert member 22 On the outside, the insert member 22 carries at a distance from each other two annular grooves 37, 38.
- the annular groove 38 receives a sealing ring 40.
- a retaining clip 39 is inserted, which engages around the base part 25 laterally and determines the insert 22 immovable.
- the insert part 22 has an insertion section 44, which merges into a cylindrical central section 47 via a contact section 46 conically tapering in the flow direction 45.
- a shoulder 48 which tapers conically in the flow direction 45 and adjoins an outlet section, adjoins the middle section 47 in the flow direction 45.
- the outlet section forms a sealing surface 49.
- the outlet section is followed within the valve housing 21 by a coaxially aligned with the longitudinal axis of the insert part 22 Through hole 51, from which the outlet line 29, which passes through the first housing leg 26 of the valve housing 21, branches off.
- the insert member 22 receives a closing body 54, which is surrounded by a sealing ring 55 and sealingly against the sealing surface 49 can be applied. It is held at one end of a valve stem 57, which passes through the through hole 51. With its over the valve housing 21 projecting other end 48 of the valve stem 57 is located on a curved pressure plate 56 on the hand lever 35 at. The pressure plate 56 made of metal is clipped or cast in the hand lever 35. In a projecting beyond the valve housing 21 end portion of the valve stem 57 carries a support ring 59.
- a compression spring 60 is clamped, which acts on the valve stem 57 and the closing body 54 with a compressive force, that the closing body 54 under the Effect of the compression spring 60 automatically assumes its closed position.
- the user By pivoting the hand lever 35, the user can move the closing body 54 in the direction away from the sealing surface 49 for opening the valve 20.
- the insert 20 has two diametrically opposite openings in the form of two insertion slots 62, 63, each with a corresponding insertion slot of the valve housing
- insertion slots 62, 63 each have a plug-in portion 66 and 67 of a securing bracket 68, with the aid of a plug-in nipple 70, which dips into the insertion portion 44 and rests with an annular shoulder on the abutment portion 46, in the axial direction is held immovable.
- the plug-in nipple 70 forms part of a connection fitting 71, via which a high-pressure hose 73 with the insert part
- the insert 22 is releasably connectable.
- pressurized cleaning liquid preferably water
- the high-pressure hose 73 is connected directly to the insert part 22 via the connection fitting 71.
- the insert is made of a pressurized water-resistant material, namely made of brass or a high-quality plastic material, and thus has a high resistance, in particular tightness, compared to the pressurized cleaning fluid. It forms the sealing surface 49 and receives the closing body 54, which dips into the central portion 47.
- the insert 22 thus gives the valve 20 the required pressure water resistance, without requiring the entire valve housing 21 must be made of a high-quality plastic material or metal.
- the valve housing 21 is rather made of a very inexpensive plastic material, for example of polyamide or polypropylene material.
Landscapes
- Nozzles (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2006/002621 WO2007107169A1 (de) | 2006-03-22 | 2006-03-22 | Hochdruckspritzpistole für ein hochdruckreinigungsgerät |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1996337A1 true EP1996337A1 (de) | 2008-12-03 |
Family
ID=37401071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06723617A Withdrawn EP1996337A1 (de) | 2006-03-22 | 2006-03-22 | Hochdruckspritzpistole für ein hochdruckreinigungsgerät |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1996337A1 (de) |
CN (1) | CN101400450A (de) |
WO (1) | WO2007107169A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102179330B (zh) * | 2011-04-19 | 2012-12-05 | 宁波大叶园林工业有限公司 | 一种多功能增压清洗喷水枪的改进 |
WO2015086085A1 (de) * | 2013-12-12 | 2015-06-18 | Alfred Kärcher Gmbh & Co. Kg | Ventilpistole für ein hochdruckreinigungsgerät |
DE102014115789A1 (de) * | 2014-10-30 | 2016-05-04 | Alfred Kärcher Gmbh & Co. Kg | Spritzpistole für Hochdruckreinigungsgerät |
DK3297764T3 (da) | 2015-05-21 | 2020-06-02 | Kaercher Alfred Se & Co Kg | Højtryksrensningssystem og udledningsenhed til et sådant højtryksrensningssystem |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1992490A (en) * | 1932-08-11 | 1935-02-26 | Firestone Tire & Rubber Co | Nozzle |
DE3407744C2 (de) * | 1984-03-02 | 1986-01-23 | Alfred Kärcher GmbH & Co, 7057 Winnenden | Handspritzpistole für ein Hochdruckreinigungsgerät |
DE3720241C2 (de) * | 1986-09-26 | 1994-09-22 | Wolfgang Suttner | Ventilpistole für ein Hochdruckreinigungsgerät |
DE102004006592B3 (de) * | 2004-02-10 | 2005-11-10 | Alfred Kärcher Gmbh & Co. Kg | Handspritzpistole für ein Hochdruckreinigungsgerät |
-
2006
- 2006-03-22 EP EP06723617A patent/EP1996337A1/de not_active Withdrawn
- 2006-03-22 CN CNA2006800539468A patent/CN101400450A/zh active Pending
- 2006-03-22 WO PCT/EP2006/002621 patent/WO2007107169A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2007107169A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN101400450A (zh) | 2009-04-01 |
WO2007107169A1 (de) | 2007-09-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080717 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BINDER, JUERGEN Inventor name: SCHMID. JOERG Inventor name: FISCHER, VITALI Inventor name: LINDAUER, ROLF |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20090715 |