EP1047878B1 - Kolbenpumpe für ein hochdruckreinigungsgerät - Google Patents

Kolbenpumpe für ein hochdruckreinigungsgerät Download PDF

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Publication number
EP1047878B1
EP1047878B1 EP98966605A EP98966605A EP1047878B1 EP 1047878 B1 EP1047878 B1 EP 1047878B1 EP 98966605 A EP98966605 A EP 98966605A EP 98966605 A EP98966605 A EP 98966605A EP 1047878 B1 EP1047878 B1 EP 1047878B1
Authority
EP
European Patent Office
Prior art keywords
pump
weld
insert
inserts
pump according
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
EP98966605A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1047878A1 (de
Inventor
Thomas BÄRLIN
Robert Nathan
Joachim Daiss
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 EP1047878A1 publication Critical patent/EP1047878A1/de
Application granted granted Critical
Publication of EP1047878B1 publication Critical patent/EP1047878B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C15/064—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston machines or pumps
    • F04C15/066—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston machines or pumps of the non-return type
    • 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
    • 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
    • F04B53/007—Cylinder heads
    • 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
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a piston pump for a high-pressure cleaning device with a pump housing in which at least one pump chamber with an inlet valve and an outlet valve is arranged, in which a reciprocating driven piston plunges sealed, which pump housing a pump block and a pump head comprises close to each other at a parting surface abut, the pumping chambers and / or connecting lines Push the interface through in a sealed manner and in the area of the interface from the interface into the pumping chambers and / or the connecting lines insertable inserts that are inserted in the Position between the pump block and the pump head are set.
  • the object of the invention is a generic piston pump To be designed so that such forces in the plant area avoided by pump head and pump block become.
  • This task is the beginning of a piston pump described type according to the invention solved in that the pumping chambers and the connecting lines in the receiving area the bets as well as the bets from one consist of thermally softenable plastic material and that the inserts are welded to the wall of the they receiving pump chamber or connecting line are connected.
  • the Inserts in the pumping chambers and connecting lines not determined by the fact that it is between the pump head and pump block, but the Inserts are made with the surrounding wall of the pump head or the pump block permanently welded.
  • Vacuum pump in which a housing part and a cover abut each other along the edge and together one form one large pumping chamber, already known per se, Valve plates each on a housing part by defining that valve plates and housing consist of thermoplastic and with each other can be welded, however, this known construction give no suggestion to support forces to avoid the other part of the pump housing (EP-A-0 667 270).
  • the pump block and Pump head at least in the area of the interface from one softenable plastic material and on the Partition surface connected by a weld are. This makes complex screw connections Connection unnecessary, the welding is sufficient, to keep the pump block and pump head permanently together connect, especially in view of the fact that Forces in the contact area between the pump head and pump block be reduced in that the stakes in the Connection lines and / or the pumping chambers through Weld are set.
  • the pump housing has a connection for sucking a chemical with a valve insert
  • the in a receptacle of the pump housing is inserted
  • the valve insert and the receptacle at least in their investment area from a softenable Plastic material exist and in this Contact area connected by a weld are.
  • the weld can, according to preferred embodiments run in different ways, for example the weld can be an ultrasonic weld, a vibration weld, a friction weld or a Spiegelsch conductedung.
  • those to be welded are Parts with low amplitude and high frequency moved against each other, for example around the Longitudinal axis of the pump chamber or the connecting line twisted against each other, and this movement creates So much warming in the contact area that the plastic material of both the surrounding wall as well of use also melts.
  • the melted plastic materials mix and form after cooling and the associated solidification a reliable Welded connection between the insert and the surrounding wall.
  • those to be welded are Parts with compared to ultrasonic welding much lower frequency against each other moved by vibrating either one of them welding parts over the other. Through the occurring relative movement and the friction between the parts to be welded are heated, to soften the material to be welded leads.
  • the thin heating elements in the area of Contact area of the two to be connected Parts introduced thin heating elements, which after melting of the adjacent material can be removed. The melted material can then be intimately with one another mix and form the welded joint.
  • the thin heating elements could formed for example in the manner of a sector aperture be radial after heating the material be pulled inside into the insert and then after forming the welded joint from the Insert can be pulled out.
  • the insert is a sleeve.
  • the edge of the sleeve facing away from the separating surface is designed as a sealing seat for a valve body.
  • a valve body exercises large in the axial direction Forces on its sealing seat, these forces can through the ultrasonic welding directly from the insert the surrounding wall can be introduced without this Forces on the other part of the pump housing be transmitted.
  • the sleeve is designed as a sealing sleeve is and protrudes over the parting surface.
  • the protruding part can then be divided into corresponding parts of the pumping chambers or connecting lines in each case Immerse another part of the pump housing and there one Sealing in the interface area.
  • An embodiment in which is provided is particularly favorable is that the use and the receiving it Wear pumping chamber or connecting line ring shoulders, that hit each other when inserting the insert and after thermally softening their material by ultrasonic welding in the further The inserts are deformed and welded together become.
  • ring grooves into the facing one another Wall parts of the insert or the pumping chambers or to incorporate connecting lines, these ring grooves serve to absorb molten material and additionally lead to a form-fitting and material-fitting Connection of the insert with the surrounding one Wall.
  • the high pressure pump 1 shown in the drawing includes a housing 2 with a pump block 3 and a Pump head 4.
  • Pump block 3 and pump head 4 lie along a flat parting surface 5 to each other on and are not shown in the drawing Clamping devices clamped against each other, for example by screws.
  • the pump block 3 accommodates pumping chambers 6, in each of which a cylindrical piston 7 is immersed, this piston 7 is opposed by suitable seals 8, 9, 10 the pump chamber 6 sealed.
  • the piston 7 is through a swash plate, not shown in the drawing inserted oscillating into the pump chamber 6 and through a helical spring 11 surrounding it again from this pulled out so that the volume of the pumping chamber 6 changes periodically.
  • the pump chamber 6 stands over a connecting line 12, which passes through the separating surface 5, with a Suction line 13 in connection, which is in the pump head 4th located.
  • a connecting line leads in the same way 14 from the pump chamber 6 through the separating surface 5 through to a pressure line 15 in the pump head 4 this pressure line 15 closes a high pressure line 16, through the conveyed cleaning medium in in a known manner to a delivery device is transported, for example a spray lance.
  • the connecting lines 12 and 14 are in the area of Partition surface 5 by sleeve-shaped inserts 17, 18 against each other sealed on either side of the Partition surface 5 in the connecting lines 12 and 14 respectively immerse and partially over there in circumferential grooves 19th inserted O-ring seals 20 the seal to the surrounding Effect wall.
  • the insert 17 in the connecting line 12 is essentially a cylindrical sleeve, the one to the pumping chamber 6 turned edge 21 as a sealing seat for a longitudinally displaceable Valve body 22 is formed, the pressed against the edge 21 by a compression spring 23 is.
  • This arrangement forms a suction valve for the Pump chamber 6.
  • the sleeve-shaped insert 17 is on its outside provided with several steps or ring shoulders 24, the have a very small extent in the radial direction and the projecting ring shoulders 25 on the Correspond to the inner wall 26 of the connecting line 12.
  • the feed 17 can gradually feed in deeper the connecting line 12 are inserted, wherein a mixture of the melted in the contact area Material of inner wall 26 on the one hand and Insert 17 on the other hand results.
  • the insert 17 becomes a certain one Feed path inserted into the connecting line 12, for example by 1 to 5 mm, and about one Insertion height results in a welded joint that after the material has cooled not only the insert 17 reliably defines in the connecting line 12, but also an all-round sealing of the insert 17 relative to the surrounding inner wall 26.
  • the insert 18 is sleeve-shaped Connector formed that the connecting line 14 bridges in the area of the interface 5 and against the inner wall of the connecting line 14 both in the pump block 3 and in the pump head 4 via O-ring seals is sealed.
  • This insert 18 is made in a similar manner to the insert 17 by ultrasonic welding into the pump block side End of the connecting line 14 depressed and welded in. It would be perfectly possible to use the pump block side Omit O-ring seal on insert 18, because the welded connection is already a reliable one Sealing is done.
  • the inserts are connected to the pump block through an ultrasonic weld, this connection but can with modified embodiments also done by different types of welds, especially by vibration welding, a Friction welding or by mirror welding.
  • connection technology described is also on others Make the pump housing applicable, for example for fixing a valve insert 31 in a receptacle 32 on the pump head 4, this valve insert is in a chemical suction line switched on.
  • This Valve insert 31 exists at least in the contact area with the receptacle 32 just like this one from a softenable Plastic material, so that both parts by one Welding are permanently connected to each other can.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Reciprocating Pumps (AREA)
  • Compressor (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP98966605A 1998-01-14 1998-12-01 Kolbenpumpe für ein hochdruckreinigungsgerät Expired - Lifetime EP1047878B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19801146A DE19801146C1 (de) 1998-01-14 1998-01-14 Kolbenpumpe für ein Hochdruckreinigungsgerät
DE19801146 1998-01-14
PCT/EP1998/007791 WO1999036700A1 (de) 1998-01-14 1998-12-01 Kolbenpumpe für ein hochdruckreinigungsgerät

Publications (2)

Publication Number Publication Date
EP1047878A1 EP1047878A1 (de) 2000-11-02
EP1047878B1 true EP1047878B1 (de) 2002-04-17

Family

ID=7854587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98966605A Expired - Lifetime EP1047878B1 (de) 1998-01-14 1998-12-01 Kolbenpumpe für ein hochdruckreinigungsgerät

Country Status (10)

Country Link
US (1) US6428291B1 (es)
EP (1) EP1047878B1 (es)
JP (1) JP2002509225A (es)
CN (1) CN1110634C (es)
AT (1) ATE216465T1 (es)
AU (1) AU2412899A (es)
DE (2) DE19801146C1 (es)
DK (1) DK1047878T3 (es)
ES (1) ES2175856T3 (es)
WO (1) WO1999036700A1 (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007003520B3 (de) * 2007-01-18 2008-06-05 Alfred Kärcher Gmbh & Co. Kg Kolbenpumpe für ein Hochdruckreinigungsgerät
DE102007003521A1 (de) * 2007-01-18 2008-07-31 Alfred Kärcher Gmbh & Co. Kg Kolbenpumpe für ein Hochdruckreinigungsgerät

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20030053U1 (it) * 2003-07-10 2005-01-11 Lavorwash Spa Struttura di pompa idraulica a pistoni assiali
US8100407B2 (en) * 2004-03-11 2012-01-24 Stanton Eddie N Packing cartridges and pressure-dampening elements for plunger-type pumps
US20070273105A1 (en) * 2004-03-11 2007-11-29 Stanton Eddie N Packing cartridges and pressure-dampening and voc-absorbing elements for plunger-type pumps
US7951226B2 (en) 2005-03-11 2011-05-31 Stanton Eddie N Apparatuses and methods for reducing emissons of volatile organic compounds when pumping fluids containing volatile organic compounds with a positive displacement pump
DE102006006555B4 (de) * 2006-02-13 2008-03-06 Siemens Ag Hochdruckpumpe
DE102007020298A1 (de) * 2007-04-20 2008-10-23 Alfred Kärcher Gmbh & Co. Kg Kolbenpumpe für ein Hochdruckreinigungsgerät
DE102007020299A1 (de) * 2007-04-20 2008-10-23 Alfred Kärcher Gmbh & Co. Kg Kolbenpumpe für ein Hochdruckreinigungsgerät
DE102007020300A1 (de) 2007-04-20 2008-10-23 Alfred Kärcher Gmbh & Co. Kg Kolbenpumpe für ein Hochdruckreinigungsgerät
KR200450086Y1 (ko) 2007-12-31 2010-09-02 디에이치엠(주) 고압세척기
WO2010044416A1 (ja) * 2008-10-14 2010-04-22 株式会社ジェイテクト 電動ポンプユニット
US8679230B2 (en) 2008-12-19 2014-03-25 Michael L. Strickland Reducing emissions of VOCs from low-pressure storage tanks
CN102953974B (zh) * 2011-08-31 2016-05-25 宁波蓝达实业有限公司 用于高压清洗机的自吸泵
DE102020131796A1 (de) 2020-12-01 2022-06-02 Alfred Kärcher SE & Co. KG Kolbenpumpe für ein hochdruckreinigungsgerät
CN115163938A (zh) * 2022-06-24 2022-10-11 东风（十堰）汽车管业有限公司 一种用于车载供氢系统的密封结构

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK165129C (da) * 1988-09-02 1993-02-22 Westergaard Knud E Ind As Aksialstempelpumpe til vaesker, navnlig til brug i hoejtryksrenseapparater
US5230471A (en) * 1991-03-08 1993-07-27 Shop-Vac Corporation Pressure washer
DE59102642D1 (de) * 1991-05-07 1994-09-29 Hauhinco Maschf Hochdruckwasserpumpe für Reinwasser.
GB9402828D0 (en) * 1994-02-15 1994-04-06 Wabco Automotive Uk Vacuum pump
DE4404925A1 (de) * 1994-02-16 1995-08-17 Kaercher Gmbh & Co Alfred Hochdruckreinigungsgerät
DE4431130A1 (de) * 1994-09-01 1996-03-07 Bosch Gmbh Robert Kolben für eine Kolbenpumpe
DE19548498C2 (de) * 1995-12-22 1998-07-23 Kaercher Gmbh & Co Alfred Hochdruckreinigungsgerät
DE29603822U1 (de) * 1996-03-01 1996-04-25 Alfred Kärcher GmbH & Co, 71364 Winnenden Elektrische Schalteinrichtung, insbesondere für ein Hochdruckreinigungsgerät
DE29701555U1 (de) * 1997-01-30 1997-03-13 Alfred Kärcher GmbH & Co, 71364 Winnenden Hochdruckreinigungsgerät

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007003520B3 (de) * 2007-01-18 2008-06-05 Alfred Kärcher Gmbh & Co. Kg Kolbenpumpe für ein Hochdruckreinigungsgerät
DE102007003521A1 (de) * 2007-01-18 2008-07-31 Alfred Kärcher Gmbh & Co. Kg Kolbenpumpe für ein Hochdruckreinigungsgerät
DE102007003521B4 (de) * 2007-01-18 2011-06-09 Alfred Kärcher Gmbh & Co. Kg Kolbenpumpe für ein Hochdruckreinigungsgerät

Also Published As

Publication number Publication date
JP2002509225A (ja) 2002-03-26
DE59803886D1 (de) 2002-05-23
WO1999036700A1 (de) 1999-07-22
CN1110634C (zh) 2003-06-04
US6428291B1 (en) 2002-08-06
ATE216465T1 (de) 2002-05-15
EP1047878A1 (de) 2000-11-02
CN1285898A (zh) 2001-02-28
AU2412899A (en) 1999-08-02
DE19801146C1 (de) 1999-06-24
ES2175856T3 (es) 2002-11-16
DK1047878T3 (da) 2002-07-08

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