EP0414955A1 - Pompe à haute pression pour des disposifs à nettoyer ou appareils du même type - Google Patents

Pompe à haute pression pour des disposifs à nettoyer ou appareils du même type Download PDF

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Publication number
EP0414955A1
EP0414955A1 EP89116198A EP89116198A EP0414955A1 EP 0414955 A1 EP0414955 A1 EP 0414955A1 EP 89116198 A EP89116198 A EP 89116198A EP 89116198 A EP89116198 A EP 89116198A EP 0414955 A1 EP0414955 A1 EP 0414955A1
Authority
EP
European Patent Office
Prior art keywords
piston
head
pump according
drive
tie 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.)
Withdrawn
Application number
EP89116198A
Other languages
German (de)
English (en)
Inventor
Werner Schulze
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 EP0414955A1 publication Critical patent/EP0414955A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • 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
    • 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
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/08—Ceramics; Oxides

Definitions

  • the invention relates to a high-pressure piston pump for cleaning devices or the like having a drive which periodically displaces the pistons and which essentially consist of ceramic and has a head which is operatively connected to the drive.
  • a high pressure pump is known for example from DE-OS 37 02 446.
  • the piston is thus formed in the form of a sleeve, the hollow core or the longitudinal bore being produced during the shaping of the piston, that is to say the expression “longitudinal bore” does not necessarily mean that the hollow interior of the piston is actually produced by introducing a bore. This expression could also be replaced by "longitudinal channel” or a similar expression.
  • the sleeve-shaped ceramic piston is penetrated by a tie rod which is supported on the outside of the piston on the side facing away from the drive and is connected to the head on the drive side in such a way that the head is clamped against the end face of the piston.
  • a tie rod which is supported on the outside of the piston on the side facing away from the drive and is connected to the head on the drive side in such a way that the head is clamped against the end face of the piston.
  • tie rod is sealed against the inner wall of the longitudinal bore, so that the interior of the pump chamber is thereby sealed from the drive side.
  • the tie rod can be supported on the pump chamber end face of the piston via a support element which has a larger radius than the longitudinal bore in the piston.
  • This support element is preferably a disk.
  • the support element can be formed in one piece with the tie rod.
  • the head can be screwed onto the drive end of the tie rod, in another embodiment the tie rod and head are made of plastic and are welded or glued to one another.
  • connection is also possible, for example the head and tie rod can be riveted or soldered to one another.
  • the head tensions a spring support plate against the drive end face of the piston or if the head itself carries a spring support plate.
  • a spring surrounding the piston and pressing the piston against the swash plate of a swash plate drive can be supported on this.
  • the head is designed as a metallic contact element on a swashplate drive; in a modified embodiment, the head can also carry a ball-bearing sliding block which rests on a swashplate drive.
  • the head is articulated to the connecting rod of a crank mechanism.
  • the piston is sealed on the outside in a conventional manner by a high-pressure seal and a low-pressure seal. In some cases there are difficulties in sealing against the outer jacket of the ceramic piston due to the ceramic roughness. It can then be provided that the piston has an outer jacket made of steel at its drive-side end at which it is sealed, for example in the form of a pressed-on sleeve or in the form of a piston region which adjoins the ceramic piston region.
  • FIG. 1 only one pump chamber with a piston is shown of a high-pressure piston pump of conventional design, which has, for example, three pumping chambers, into each of which a piston is immersed, and the drive means for the piston are essentially omitted.
  • a piston 4 is immersed in a cylindrical pump chamber 1 with an inlet valve 2 and an outlet valve 3.
  • This piston consists of a circular cylindrical ceramic sleeve 5 with a central through opening or through hole 6, in which a tie rod 7 is located.
  • This comprises a washer 9, which is supported on the end face 8 of the ceramic sleeve on the pump chamber side and is integrally connected to a pull rod 10 passing through the through opening 6, on the end of which opposite the washer 9 there is an external thread 11.
  • ring seals 13 are inserted in two circumferential grooves, which seal the inner wall of the through opening 6 with respect to the tie rod 10.
  • a contact head 14 is screwed onto the external thread 11 of the pull rod 10 and clamps a spring plate 15 against the end face 16 of the ceramic sleeve 5 facing away from the pumping chamber.
  • the spring plate 15 protrudes radially beyond the ceramic sleeve 5, on which a coil spring 17, which concentrically surrounds the piston, is supported, the other end of which is supported on a pump-fixed guide 18 surrounding the piston.
  • the coil spring 17 applies a force to the piston, which pulls it out of the pumping chamber 1, so that the bearing head 14 with an inclined bearing surface 19 is pressed elastically against a swash plate 20 of a drive (not shown).
  • disc 9, tie rod 10 and contact head 14 consist of a metal, at least the contact head 14 being hardened.
  • the dimensions can be chosen so that the piston has a diameter of 20 mm, for example, the wall thickness of the ceramic sleeve 5 being 7 mm, so that the inside diameter of the through opening 6 is 6 mm.
  • the ceramic sleeve 5 extends over the entire length of the piston.
  • a small area of this ceramic sleeve 5 is replaced by a further sleeve 5a made of a metal, the low-pressure seal 23 abutting in this area.
  • a metal sleeve could also be pressed onto a partial area of the piston 5, this metal sleeve also forming a sealing surface with respect to the low-pressure seal 23.
  • the contact head 14 carries a ball 24 on which a sliding block 25 is mounted, which in turn is supported on the swash plate 20.
  • the result is a ball-and-socket mounting of the sliding block 25 on the contact head 14.
  • the bearing head 14 is provided with a fork-like bearing 26, on which the connecting rod 28 of a crank mechanism, not otherwise shown, is mounted by means of a piston pin 27.
  • a swash plate drive is not used, but a crank drive.
  • the spring plate 15 and the contact head 14 are separate components, it would also be possible to form the contact head and the spring plate in one piece.
  • the pull rod can be made of plastic at lower loads, the same applies to the contact head. These parts can be connected to one another, for example, by welding or gluing.
  • connection techniques can also be used, for example welding, soldering or riveting.
  • the contact head 14 is not fixed directly on the adjoining area of the ceramic piston, but is supported on the opposite side of the piston via a pull rod which penetrates the entire sleeve-shaped piston.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP89116198A 1989-09-01 1989-09-01 Pompe à haute pression pour des disposifs à nettoyer ou appareils du même type Withdrawn EP0414955A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE8910468U DE8910468U1 (de) 1989-09-01 1989-09-01 Hochdruckkolbenpumpe für Reinigungsgeräte od.dgl.

Publications (1)

Publication Number Publication Date
EP0414955A1 true EP0414955A1 (fr) 1991-03-06

Family

ID=6842488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89116198A Withdrawn EP0414955A1 (fr) 1989-09-01 1989-09-01 Pompe à haute pression pour des disposifs à nettoyer ou appareils du même type

Country Status (2)

Country Link
EP (1) EP0414955A1 (fr)
DE (1) DE8910468U1 (fr)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10774828B1 (en) 2020-01-17 2020-09-15 Vulcan Industrial Holdings LLC Composite valve seat system and method
US11242849B1 (en) 2020-07-15 2022-02-08 Vulcan Industrial Holdings, LLC Dual use valve member for a valve assembly
US11353117B1 (en) 2020-01-17 2022-06-07 Vulcan Industrial Holdings, LLC Valve seat insert system and method
US11384756B1 (en) * 2020-08-19 2022-07-12 Vulcan Industrial Holdings, LLC Composite valve seat system and method
US11391374B1 (en) 2021-01-14 2022-07-19 Vulcan Industrial Holdings, LLC Dual ring stuffing box
US11421680B1 (en) 2020-06-30 2022-08-23 Vulcan Industrial Holdings, LLC Packing bore wear sleeve retainer system
US11421679B1 (en) 2020-06-30 2022-08-23 Vulcan Industrial Holdings, LLC Packing assembly with threaded sleeve for interaction with an installation tool
US11434900B1 (en) 2022-04-25 2022-09-06 Vulcan Industrial Holdings, LLC Spring controlling valve
USD980876S1 (en) 2020-08-21 2023-03-14 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
USD986928S1 (en) 2020-08-21 2023-05-23 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
USD997992S1 (en) 2020-08-21 2023-09-05 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
US11920684B1 (en) 2022-05-17 2024-03-05 Vulcan Industrial Holdings, LLC Mechanically or hybrid mounted valve seat
US12049889B2 (en) 2020-06-30 2024-07-30 Vulcan Industrial Holdings, LLC Packing bore wear sleeve retainer system
US12055221B2 (en) 2021-01-14 2024-08-06 Vulcan Industrial Holdings, LLC Dual ring stuffing box
US12140240B1 (en) 2022-01-19 2024-11-12 Vulcan Industrial Holdings, LLC Gradient material structures and methods of forming the same
USD1061623S1 (en) 2022-08-03 2025-02-11 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
US12292121B2 (en) 2023-08-10 2025-05-06 Vulcan Industrial Holdings, LLC Valve member including cavity, and related assemblies, systems, and methods
US12292120B1 (en) 2021-02-23 2025-05-06 Vulcan Industrial Holdings, LLC System and method for valve assembly
US12297922B1 (en) 2022-03-04 2025-05-13 Vulcan Industrial Holdings, LLC Valve seat with embedded structure and related methods
US12345332B2 (en) 2021-08-18 2025-07-01 Vulcan Industrial Holdings, LLC Self-locking plug
US12366245B1 (en) 2020-08-27 2025-07-22 Vulcan Industrial Holdings, LLC Connecting rod assembly for reciprocating pump
US12510164B1 (en) 2021-08-18 2025-12-30 Vulcan Industrial Holdings, LLC Sleeved fluid end
USD1113987S1 (en) 2022-05-20 2026-02-17 Vulcan Industrial Holdings, LLC Header ring for a pumping system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4108105C2 (de) * 1991-03-13 1994-10-20 Kaercher Gmbh & Co Alfred Kolben für die Pumpe eines Hochdruckreinigungsgerätes
DE29716906U1 (de) * 1997-07-17 1997-11-20 Eberherr, Herbert, 97638 Mellrichstadt Pumpenkopf für eine Hub-Kolbenpumpe
EP0892174B1 (fr) 1997-07-17 2001-10-31 Jürgen Weigel Tête de pompe pour pompe à piston
CN107035680A (zh) * 2017-06-20 2017-08-11 宁波禄腾精密机械有限公司 柱塞结构及柱塞泵

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1428876A (en) * 1921-11-05 1922-09-12 Bollinckx Arthur Pump of variable capacity
US2413347A (en) * 1945-02-08 1946-12-31 Aldrich Pump Company Piston construction
US2880042A (en) * 1957-06-20 1959-03-31 New York Air Brake Co Piston
FR74131E (fr) * 1958-08-28 1960-11-07 Dispositif pour pompes à huile à plusieurs cylindres
US3276390A (en) * 1964-12-16 1966-10-04 Armco Steel Corp Reciprocating pumps
US3330217A (en) * 1965-07-20 1967-07-11 Binks Mfg Co Pump
US4140442A (en) * 1977-03-14 1979-02-20 Perfect Pump Co., Inc. High pressure pump
EP0149219A2 (fr) * 1983-12-28 1985-07-24 Speck-Kolbenpumpen-Fabrik Pompe à piston
US4669368A (en) * 1983-07-19 1987-06-02 Cooper Industries, Inc. Collapsible plunger

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1428876A (en) * 1921-11-05 1922-09-12 Bollinckx Arthur Pump of variable capacity
US2413347A (en) * 1945-02-08 1946-12-31 Aldrich Pump Company Piston construction
US2880042A (en) * 1957-06-20 1959-03-31 New York Air Brake Co Piston
FR74131E (fr) * 1958-08-28 1960-11-07 Dispositif pour pompes à huile à plusieurs cylindres
US3276390A (en) * 1964-12-16 1966-10-04 Armco Steel Corp Reciprocating pumps
US3330217A (en) * 1965-07-20 1967-07-11 Binks Mfg Co Pump
US4140442A (en) * 1977-03-14 1979-02-20 Perfect Pump Co., Inc. High pressure pump
US4669368A (en) * 1983-07-19 1987-06-02 Cooper Industries, Inc. Collapsible plunger
EP0149219A2 (fr) * 1983-12-28 1985-07-24 Speck-Kolbenpumpen-Fabrik Pompe à piston

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11353117B1 (en) 2020-01-17 2022-06-07 Vulcan Industrial Holdings, LLC Valve seat insert system and method
US10774828B1 (en) 2020-01-17 2020-09-15 Vulcan Industrial Holdings LLC Composite valve seat system and method
US12345253B2 (en) 2020-06-30 2025-07-01 Vulcan Industrial Holdings, LLC Packing assembly with threaded sleeve for interaction with an installation tool
US12480489B2 (en) 2020-06-30 2025-11-25 Vulcan Industrial Holdings, LLC Packing bore wear sleeve retainer system
US11421680B1 (en) 2020-06-30 2022-08-23 Vulcan Industrial Holdings, LLC Packing bore wear sleeve retainer system
US11421679B1 (en) 2020-06-30 2022-08-23 Vulcan Industrial Holdings, LLC Packing assembly with threaded sleeve for interaction with an installation tool
US12049889B2 (en) 2020-06-30 2024-07-30 Vulcan Industrial Holdings, LLC Packing bore wear sleeve retainer system
US12270394B2 (en) 2020-06-30 2025-04-08 Vulcan Industrial Holdings, LLC Packing bore wear sleeve retainer system
US11242849B1 (en) 2020-07-15 2022-02-08 Vulcan Industrial Holdings, LLC Dual use valve member for a valve assembly
US11384756B1 (en) * 2020-08-19 2022-07-12 Vulcan Industrial Holdings, LLC Composite valve seat system and method
USD997992S1 (en) 2020-08-21 2023-09-05 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
USD986928S1 (en) 2020-08-21 2023-05-23 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
USD980876S1 (en) 2020-08-21 2023-03-14 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
US12366245B1 (en) 2020-08-27 2025-07-22 Vulcan Industrial Holdings, LLC Connecting rod assembly for reciprocating pump
US12055221B2 (en) 2021-01-14 2024-08-06 Vulcan Industrial Holdings, LLC Dual ring stuffing box
US11391374B1 (en) 2021-01-14 2022-07-19 Vulcan Industrial Holdings, LLC Dual ring stuffing box
US12404931B2 (en) 2021-01-14 2025-09-02 Vulcan Industrial Holdings, LLC Dual ring stuffing box
US12292120B1 (en) 2021-02-23 2025-05-06 Vulcan Industrial Holdings, LLC System and method for valve assembly
US12345332B2 (en) 2021-08-18 2025-07-01 Vulcan Industrial Holdings, LLC Self-locking plug
US12540673B2 (en) 2021-08-18 2026-02-03 Vulcan Industrial Holdings, LLC Self-locking plug
US12510164B1 (en) 2021-08-18 2025-12-30 Vulcan Industrial Holdings, LLC Sleeved fluid end
US12498051B2 (en) 2022-01-19 2025-12-16 Vulcan Industrial Holdings, LLC Gradient material structures and methods of forming the same
US12140240B1 (en) 2022-01-19 2024-11-12 Vulcan Industrial Holdings, LLC Gradient material structures and methods of forming the same
US12297922B1 (en) 2022-03-04 2025-05-13 Vulcan Industrial Holdings, LLC Valve seat with embedded structure and related methods
US11761441B1 (en) 2022-04-25 2023-09-19 Vulcan Industrial Holdings, LLC Spring controlling valve
US12366244B2 (en) 2022-04-25 2025-07-22 Vulcan Industrial Holdings, LLC Spring controlling valve
US11434900B1 (en) 2022-04-25 2022-09-06 Vulcan Industrial Holdings, LLC Spring controlling valve
US11920684B1 (en) 2022-05-17 2024-03-05 Vulcan Industrial Holdings, LLC Mechanically or hybrid mounted valve seat
USD1113987S1 (en) 2022-05-20 2026-02-17 Vulcan Industrial Holdings, LLC Header ring for a pumping system
USD1061623S1 (en) 2022-08-03 2025-02-11 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
US12292121B2 (en) 2023-08-10 2025-05-06 Vulcan Industrial Holdings, LLC Valve member including cavity, and related assemblies, systems, and methods

Also Published As

Publication number Publication date
DE8910468U1 (de) 1989-11-02

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