EP0603719A1 - Pompe à rotors à vis - Google Patents

Pompe à rotors à vis Download PDF

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Publication number
EP0603719A1
EP0603719A1 EP93120179A EP93120179A EP0603719A1 EP 0603719 A1 EP0603719 A1 EP 0603719A1 EP 93120179 A EP93120179 A EP 93120179A EP 93120179 A EP93120179 A EP 93120179A EP 0603719 A1 EP0603719 A1 EP 0603719A1
Authority
EP
European Patent Office
Prior art keywords
spindle
screw pump
screw
mixed phase
wear
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Withdrawn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
EP93120179A
Other languages
German (de)
English (en)
Inventor
Klaus Dipl.-Ing. Willibald
Rolf Dipl.-Ing. Quast
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.)
Allweiler GmbH
Original Assignee
Allweiler AG
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 Allweiler AG filed Critical Allweiler AG
Publication of EP0603719A1 publication Critical patent/EP0603719A1/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Withdrawn legal-status Critical Current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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/90—Improving properties of machine parts
    • F04C2230/91—Coating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/90—Coating; Surface treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2280/00—Materials; Properties thereof
    • F05B2280/40—Organic materials
    • 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 screw pump for conveying a flow medium with screw spindles provided in bores of a housing body, the spindle paths of which touch one another.
  • the surface hardness of the components is determined as a function of the wear resistance, then with metallic materials, the thermal conversion by means of a quenching structure - carried out on the component as a whole - or the thermal incorporation of foreign atoms into the basic matrix with the resistance effect due to lattice tension well known, also the application of coatings of metallic or non-metallic complexes, such as oxides, carbides, nitrides.
  • the component can also be made entirely of ceramic or the like. Complexes.
  • the production costs amount to a multiple of the costs for the aforementioned type of production.
  • At least one circumferential groove is introduced into the circumference of the screw threads of the screw spindle, i.e. into the surface of the screw thread, and is filled with a wear path made of a metallic / carbide mixed phase, the mixed phase being treated with a laser beam (light amplification by stimulated emission of radiation) .
  • a running or drive spindle manufactured in a conventional process is refined in defined surface areas by introducing the metallic / carbidic mixing phases in the grooves machined into the spindle geometry before the last production machining process in such a way that these wear tracks or edges match the mixed friction states record, tape.
  • the powder of the mixed phase is applied to the base of the groove and then exposed to the laser beam in predetermined sections. This additionally permits a selection of the spindle base material that is more adapted to the active system with regard to further attack mechanisms, such as, for. B. Corrosion. Another advantage is the resistance to abrasive media.
  • the production of the spindle sealing edge from the laser-treated mixed phase is of particular importance.
  • the laser melting tracks described are applied to a low-alloy base material or a nitriding steel.
  • the spindle set can be made from high-alloy rust-proof and acid-resistant steel or from a nickel-based alloy.
  • Strip-like parallel grooves or a meandering pattern of the wear track have also proven to be favorable.
  • a central housing bore 12 for a work spindle runs in the housing axis A in a housing body 10 for a screw pump, which is not otherwise shown.
  • a bore 14 for a running spindle is arranged on each longitudinal side of the housing bore 12, the adjacent bores 12, 14 penetrating one another with the creation of comb lines 15.
  • grooves 18 are incorporated into the spindle geometry before the last machining step, which - as is particularly clear from FIG. 2 - illustrates - Follow the spindle path 20 in its circumference or surface 22 or are guided in a meandering manner.
  • Metallic / carbide powder is introduced into the grooves 18 and becomes a filling by means of a melting process using a laser beam as the mixing phase; these Wear track 24 can now record the mixed friction states.
  • the spindle set used in the housing body 10 can consist of low-alloy metal, of nitriding steel or of high-alloy - - rust and acid-resistant - - steels or nickel-based alloy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
EP93120179A 1992-12-22 1993-12-15 Pompe à rotors à vis Withdrawn EP0603719A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4243332 1992-12-22
DE4243332 1992-12-22

Publications (1)

Publication Number Publication Date
EP0603719A1 true EP0603719A1 (fr) 1994-06-29

Family

ID=6476018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93120179A Withdrawn EP0603719A1 (fr) 1992-12-22 1993-12-15 Pompe à rotors à vis

Country Status (4)

Country Link
EP (1) EP0603719A1 (fr)
JP (1) JPH06264873A (fr)
KR (1) KR940015279A (fr)
DE (1) DE4342897C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19948957A1 (de) * 1999-10-11 2001-04-12 Alstom Lhb Gmbh Verfahren zur Erhöhung der Steifigkeit von flächenhaften Bauteilen sowie flächenhaftes Bauteil und dessen Verwendung
CN107023477A (zh) * 2015-09-29 2017-08-08 斯凯孚德国润滑系统股份有限公司 螺杆泵

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1202644B (de) * 1959-05-23 1965-10-07 Fritz Prinz Schraubenkolben fuer Schraubenpumpen mit zumindest zwei ineinandergreifenden Schraubenkolben
US3841805A (en) * 1973-04-04 1974-10-15 Houdaille Industries Inc Screw liner
US4682939A (en) * 1986-03-25 1987-07-28 Commercial Shearing, Inc. Gear pump or motor with tooth tips of dissimilar metal
EP0560462A2 (fr) * 1990-12-24 1993-09-15 James River Corporation Of Virginia Pompe à déplacement positif

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1740440A1 (ru) * 1990-06-07 1992-06-15 Ростовский-На-Дону Завод-Втуз При Заводе "Ростсельмаш" Способ упрочнени поверхности металлов

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1202644B (de) * 1959-05-23 1965-10-07 Fritz Prinz Schraubenkolben fuer Schraubenpumpen mit zumindest zwei ineinandergreifenden Schraubenkolben
US3841805A (en) * 1973-04-04 1974-10-15 Houdaille Industries Inc Screw liner
US4682939A (en) * 1986-03-25 1987-07-28 Commercial Shearing, Inc. Gear pump or motor with tooth tips of dissimilar metal
EP0560462A2 (fr) * 1990-12-24 1993-09-15 James River Corporation Of Virginia Pompe à déplacement positif

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19948957A1 (de) * 1999-10-11 2001-04-12 Alstom Lhb Gmbh Verfahren zur Erhöhung der Steifigkeit von flächenhaften Bauteilen sowie flächenhaftes Bauteil und dessen Verwendung
CN107023477A (zh) * 2015-09-29 2017-08-08 斯凯孚德国润滑系统股份有限公司 螺杆泵
CN107023477B (zh) * 2015-09-29 2019-11-12 斯凯孚德国润滑系统股份有限公司 螺杆泵

Also Published As

Publication number Publication date
KR940015279A (ko) 1994-07-20
DE4342897C2 (de) 2002-11-21
JPH06264873A (ja) 1994-09-20
DE4342897A1 (de) 1994-06-23

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