EP1532366B1 - Pompe pour appareil de nettoyage haute pression - Google Patents
Pompe pour appareil de nettoyage haute pression Download PDFInfo
- Publication number
- EP1532366B1 EP1532366B1 EP03794866A EP03794866A EP1532366B1 EP 1532366 B1 EP1532366 B1 EP 1532366B1 EP 03794866 A EP03794866 A EP 03794866A EP 03794866 A EP03794866 A EP 03794866A EP 1532366 B1 EP1532366 B1 EP 1532366B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- pump according
- pump
- peripheral groove
- seal
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B1/141—Details or component parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
- F04B1/124—Pistons
- F04B1/126—Piston shoe retaining means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
- F04B53/164—Stoffing boxes
Definitions
- the invention relates to a pump for a high-pressure cleaner with at least a reciprocally driven piston, on the one hand in a Pumping space of a pump housing and on the other hand in a drive chamber the pump housing dips, with a voltage applied to the circumference of the piston High-pressure seal in the inlet region of the piston in the pump chamber, with a voltage applied to the circumference of the piston oil seal in the inlet region of the Piston in the drive chamber and with a piston between the high pressure seal and oil seal surrounding plenum for out of the pump room liquid leaking past the high pressure seal.
- Such a pump is described for example in DE 31 28 737. at Such a construction, it is possible that despite providing a collecting space Liquid adhering to the surface of the piston, up to the area taken along the oil seal and is passed to this, so that This liquid can get into the drive chamber and there with the Oil filling of the drive chamber mixed. This leads to damage of the Pump, as these leakage fluid increase the pressure in the drive chamber leaves.
- This object is according to the invention in a pump of the type described above achieved in that the piston in the area between the high pressure seal and the oil seal has at least one circumferential groove, and that the high pressure seal and the oil seal as far away from each other are that the circumferential groove or the circumferential grooves in the lifting movement of Piston reach neither the high pressure seal nor the oil seal.
- the circumferential groove can have very different cross sections, in particular it is advantageous if the circumferential groove has a rectangular cross-section so that there is a sharp edge, which the film of the abducted Liquid interrupts.
- the Circumferential groove in the central region of its bottom a circumferential, recessed gutter This may preferably have a rectangular cross-section exhibit. This makes it possible, on the one hand, in the transition between the peripheral surface of the piston and circumferential groove to avoid a sharp edge and thereby a violation of the oil seal during assembly, on the other hand but can There is a sharp edge between the bottom of the circumferential groove and the gutter which reliably interrupts the film of the entrained liquid.
- the circumferential groove has an arcuate cross-section, it can be provided be that the contour of the circumferential groove relative to the contour of the peripheral surface of the piston extends obliquely in the edge region of the circumferential groove.
- the width of the circumferential groove is preferably between 0.5 mm and 5 mm.
- the Depth of the circumferential groove is preferably between 0.5 mm and 3 mm.
- a spacer surrounding the piston is arranged, which is the high pressure seal and / or the oil seal supported in the axial direction.
- the collection space may have a drain, so that the collected in him Liquid is supplied, for example, the suction side of the pump again.
- the pump 1 shown in the drawing is part of a high-pressure cleaning device, which is not shown in the drawing, the pump 1 is driven by an electric motor also not shown or a another drive motor, such as a fossil fuel engine.
- the pump 1 comprises a pump housing 2 with a drive chamber 3 and with a plurality of pumping chambers 4, each having a suction valve 5 with a Suction line 6 and connected via a pressure valve 7 with a pressure line 8 are.
- a cylindrical piston 9 the other End immersed through an opening 10 in the drive chamber 3, in this Drive chamber 3 is a driven by the drive motor Swash plate 11, against which the piston 9 is pressed by means of a compression spring 12 becomes.
- the pump 1 comprises two such pistons, the structure is in both Piston selected similar, therefore, the construction is only on one Piston discussed.
- a high-pressure seal 14 is arranged, the the peripheral wall of the cylindrical piston 9 sealingly abuts and the pumping chamber 4 thereby seals in the inlet region of the piston 9.
- an oil seal 15 is also provided on the peripheral wall of the piston 9 sealingly abuts and thereby the drive chamber 3, the at least partially filled with oil, seals.
- a spacer element 18 is surrounding the piston 9, which can be seen on both the high-pressure seal14 and the oil seal 15 and thereby supported in the axial direction, i. in the direction of displacement of the piston 9, determines.
- a circumferential groove 19 incorporated in the stroke movement of the piston 9 with rotating swash plate 11 between the oil seal 15th on the one hand and high-pressure seal 14 on the other hand is moved that they both seals not reached, the reversal point is so in front of each one the two seals.
- the circumferential groove 19 is on the left side in FIG shown near the oil seal, on the right side near the High pressure seal, the displacement of the circumferential groove 19 corresponds to the stroke of the piston 9.
- the circumferential groove has 19th a rectangular cross-section, in the region between the side wall 20 of the circumferential groove 19 and the peripheral wall 21 of the piston 9 is a chamfer 22nd intended.
- the width of the circumferential groove in the axial direction for example between 0.5 mm and 5 mm, their depth is between 0.5 mm and 3 mm.
- the cross section of the circumferential groove 19 is in the embodiments of the figures 2 and 3 equal, in the embodiment of Figure 4 is missing the bevel 22, so that in the transition region between the side wall 20 and peripheral wall 21 forms a sharp edge 23.
- Figure 5 differs from that of Figure 3 in that in the bottom 24 of the circumferential groove 19 in addition a recessed, circumferential Channel 25 is provided, which in the illustrated embodiment has a rectangular cross section and thus with a sharp Edge 26 opens into the bottom 24 of the circumferential groove 19.
- the width of the channel may for example be between 0.5 mm and 5 mm, their depth is between 0.5 mm and 3 mm.
- the circumferential groove 19 has an arcuate Contour 27, which opens obliquely into the peripheral wall 21.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Gas Separation By Absorption (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Compressor (AREA)
Claims (12)
- Pompe (1) pour un appareil de nettoyage sous haute pression, comportant un piston (9) entraíné en va-et-vient qui plonge d'une part dans une chambre de pompage d'un boítier de pompe (2) et d'autre part dans une chambre d'entraínement (3) du boítier de pompe (2), comprenant un joint d'étanchéité à haute pression (14) en appui à la périphérie du piston (9) dans la zone d'entrée du piston (9) dans la chambre de pompage, un joint d'étanchéité à huile (15) en appui à la périphérie du piston (9) dans la zone d'entrée du piston (9) dans la chambre d'entraínement (3), et une chambre de collecte (16), qui entoure le piston (9) entre le joint à haute pression (14) et le joint à huile (15) et qui est destinée au liquide sortant de la chambre de pompage et contournant le joint à haute pression (14), caractérisée en ce que le piston (9) comprend dans la zone entre le joint à haute pression (14) et le joint à huile (15) au moins une gorge périphérique (19), et en ce que le joint à haute pression (14) et le joint à huile (15) sont éloignés l'un de l'autre aussi loin que la gorge périphérique (19) n'atteint ni le joint à haute pression (14) ni le joint à huile (15) lors du mouvement en va-et-vient du piston (9).
- Pompe selon la revendication 1, caractérisée en ce que la gorge périphérique (19) présente une section transversale rectangulaire.
- Pompe selon la revendication 2, caractérisée en ce que l'arête (22) entre la surface périphérique (21) du piston (9) et la paroi latérale (20) de la gorge périphérique (19) est biseautée.
- Pompe selon la revendication 2, caractérisée en ce que la paroi latérale (20) de la gorge périphérique (19) est biseautée.
- Pompe selon l'une des revendications 2 à 4, caractérisée en ce que la gorge périphérique (19) comprend, dans la zone médiane de son fond (24), une rainure périphérique renfoncée (25).
- Pompe selon la revendication 5, caractérisée en ce que la rainure (25) présente une section transversale rectangulaire.
- Pompe selon la revendication 1, caractérisée en ce que la gorge périphérique (19) présente une section transversale arquée.
- Pompe selon la revendication 7, caractérisée en ce que le contour (27) de la gorge périphérique (19) s'étend en oblique par rapport au contour de la surface périphérique (21) du piston (9).
- Pompe selon l'une des revendications précédentes, caractérisée en ce que la largeur de la gorge périphérique (19) est entre 0,5 mm et 5 mm.
- Pompe selon l'une des revendications périphériques, caractérisée en ce que la profondeur de la gorge périphérique (19) est entre 0,5 mm et 3 mm.
- Pompe selon l'une des revendications précédentes, caractérisée en ce qu'il est prévu dans la chambre de collecte (16) un élément écarteur (18) qui entoure le piston (9) et qui soutient en direction axiale le joint à haute pression (14) et/ou le joint à huile (15).
- Pompe selon l'une des revendications précédentes, caractérisée en ce que la chambre de collecte (16) présente une évacuation (17).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10239943A DE10239943C1 (de) | 2002-08-30 | 2002-08-30 | Pumpe für ein Hochdruckreinigungsgerät |
DE10239943 | 2002-08-30 | ||
PCT/EP2003/008875 WO2004025123A1 (fr) | 2002-08-30 | 2003-08-09 | Pompe pour appareil de nettoyage haute pression |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1532366A1 EP1532366A1 (fr) | 2005-05-25 |
EP1532366B1 true EP1532366B1 (fr) | 2005-10-26 |
Family
ID=28685387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03794866A Expired - Lifetime EP1532366B1 (fr) | 2002-08-30 | 2003-08-09 | Pompe pour appareil de nettoyage haute pression |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1532366B1 (fr) |
AT (1) | ATE307977T1 (fr) |
AU (1) | AU2003263207A1 (fr) |
DE (2) | DE10239943C1 (fr) |
WO (1) | WO2004025123A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITRE20080069A1 (it) * | 2008-07-22 | 2010-01-23 | Annovi Reverberi Spa | '' gruppo pompante per pompe a pistoni per idropulitrici '' |
US8651402B2 (en) | 2009-11-17 | 2014-02-18 | Black & Decker Inc. | Adjustable nozzle tip for paint sprayer |
US8413911B2 (en) | 2009-11-17 | 2013-04-09 | Black & Decker Inc. | Paint sprayer |
US8740111B2 (en) | 2009-11-17 | 2014-06-03 | Black & Decker Inc. | Paint sprayer |
US8550376B2 (en) | 2009-11-17 | 2013-10-08 | Black & Decker Inc. | Paint sprayer |
EP2501488A1 (fr) | 2009-11-17 | 2012-09-26 | Black & Decker Inc. | Mécanisme à libération rapide pour pistolet à peinture |
EP2501487A1 (fr) | 2009-11-17 | 2012-09-26 | Black & Decker Inc. | Pulvérisateur de peinture |
IT201800006145A1 (it) * | 2018-06-08 | 2019-12-08 | Pompa volumetrica a pistoni |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT8053423V0 (it) * | 1980-07-24 | 1980-07-24 | Annovi Reverberi Spa | Complesso di guida e di tenuta per un pistone di una pompa del tipo a pistoni tuffanti |
DE3702446A1 (de) * | 1987-01-28 | 1988-08-11 | Kaercher Gmbh & Co Alfred | Hochdruckreinigungsgeraet mit einer taumelscheibenkolbenpumpe |
JP2652376B2 (ja) * | 1987-04-17 | 1997-09-10 | 株式会社 丸山製作所 | 往復ポンプのシール機構 |
KR0174395B1 (ko) * | 1994-03-31 | 1999-04-15 | 토니헬샴 | 압유공급홀이 형성된 유압펌프/모터의 피스톤 |
DE4445522C2 (de) * | 1994-12-20 | 1998-05-14 | Kaercher Gmbh & Co Alfred | Kolbenpumpe für ein Hochdruckreinigungsgerät |
DE19859137C1 (de) * | 1998-12-21 | 2000-05-18 | Ferton Holding Sa | Ejektionsgerät zur Hochdruckejektion einer Flüssigkeit |
-
2002
- 2002-08-30 DE DE10239943A patent/DE10239943C1/de not_active Expired - Fee Related
-
2003
- 2003-08-09 AU AU2003263207A patent/AU2003263207A1/en not_active Abandoned
- 2003-08-09 AT AT03794866T patent/ATE307977T1/de not_active IP Right Cessation
- 2003-08-09 WO PCT/EP2003/008875 patent/WO2004025123A1/fr not_active Application Discontinuation
- 2003-08-09 EP EP03794866A patent/EP1532366B1/fr not_active Expired - Lifetime
- 2003-08-09 DE DE50301519T patent/DE50301519D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU2003263207A1 (en) | 2004-04-30 |
DE50301519D1 (de) | 2005-12-01 |
WO2004025123A1 (fr) | 2004-03-25 |
EP1532366A1 (fr) | 2005-05-25 |
DE10239943C1 (de) | 2003-10-30 |
ATE307977T1 (de) | 2005-11-15 |
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