EP0595764A1 - Pompe à engrenages - Google Patents

Pompe à engrenages Download PDF

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Publication number
EP0595764A1
EP0595764A1 EP93810658A EP93810658A EP0595764A1 EP 0595764 A1 EP0595764 A1 EP 0595764A1 EP 93810658 A EP93810658 A EP 93810658A EP 93810658 A EP93810658 A EP 93810658A EP 0595764 A1 EP0595764 A1 EP 0595764A1
Authority
EP
European Patent Office
Prior art keywords
gear pump
inlet
gear
pump according
extension
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.)
Granted
Application number
EP93810658A
Other languages
German (de)
English (en)
Other versions
EP0595764B1 (fr
Inventor
Felix Streiff
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.)
Sulzer Chemtech AG
Original Assignee
Sulzer Chemtech 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 Sulzer Chemtech AG filed Critical Sulzer Chemtech AG
Publication of EP0595764A1 publication Critical patent/EP0595764A1/fr
Application granted granted Critical
Publication of EP0595764B1 publication Critical patent/EP0595764B1/fr
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
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/001—Pumps for particular liquids
    • F04C13/002—Pumps for particular liquids for homogeneous viscous liquids

Definitions

  • the invention relates to a gear pump according to the preamble of claim 1.
  • the invention further relates to pump systems with such a gear pump and to the use of the gear pump, in particular for discharging highly viscous media from a vacuum against a high delivery pressure.
  • the enlargement in the inlet can extend up to the level of the gearwheel axes, and the length R of the enlargement can be at least 10% greater than the length D of the gear pair.
  • the enlargement of the inlet area can have a width C in the gearwheels which is larger than the tooth width T, for example by at least 10%.
  • Favorable inlet geometries can be further achieved by a ratio of inlet diameter B to inlet depth L of at least 2 and by a ratio of extension length R to inlet depth L, which is greater than 1.85.
  • a funnel-shaped inlet area can advantageously have an opening angle W of at least 55 °.
  • a cost-effective modular design with pumps according to the invention is possible by, for example, different tooth sizes with an adapted inlet area in the same housing and outlet diameter can be used.
  • the outlet diameter A can be set appropriately using an insert sleeve.
  • a particularly powerful pumping and mixing system is formed with a gear pump according to the invention combined with a downstream static mixing element.
  • a simple and efficient pumping and degassing system is formed with a gear pump according to the invention combined with a degassing chamber for the discharge of highly viscous media from the degassing chamber with high delivery pressure.
  • the gear pump 1 has an inlet 4, an outlet 6 and a pair of gearwheels 2 in a housing 3.
  • the inlet 4 has an extension 10 which extends down to the plane 11 of the gearwheel axes 12.
  • 1c shows the cross-sectional area FZ of the gear wheels 2, in the form of a rectangle D x T with length D and width T of the gear pair.
  • the extension 10 with the cross-sectional area FE has a length R and a width C.
  • the shape of the extension is made up of funnel-shaped or conical and flat boundary surfaces.
  • the funnel-shaped part of the inlet has an opening angle W, with an inlet diameter D in the upper flange plane 14.
  • the cross-sectional area FE of the extension (in the region of the gearwheel axes) is larger than that of the gearwheels FZ and the diagonal D3 is in accordance with claim 1
  • Gear cross-sectional area FZ is always smaller than the inlet diameter B.
  • both the length R and the width C of the extension FE are greater than the corresponding length D and the width T of the gear cross-sectional area FZ.
  • FIG. 3 and 4 show further examples of cross-sectional areas FE.
  • the cross-sectional area 32 in FIG. 3 is likewise rectangular like the gearwheel cross-sectional area FZ.
  • the cross-sectional area 33 of FIG. 4 shows, as a further advantageous example, a rounded, crescent-shaped extension 33 in the area of the external teeth of the gear pair 2.
  • the cross-sectional area FA is also shown in FIG. 4, which is formed by the center distance Z and tooth width T.
  • the outlet diameter A should then essentially correspond to the diagonal D4 of this cross-sectional area FA.
  • the ratio of outlet diameter A to Diagonal D4 is preferably in the range 0.9 to 1.1.
  • FIG. 5 and 6 show further examples of the vertical course of the extension 10.
  • the extension 10 first runs vertically downward and then bends into the axis plane 11 with a curve 34.
  • the extension 10 tapers, delimited by the offset oblique planes 35, to the axis plane 11.
  • FIG. 8 shows a system for pumping, mixing and degassing polymer melts, for example of PE, PS or PMMA, with an inlet 21, a degassing chamber 25, a pump 1 according to the invention, which pumps into a static mixing element 20 and with an outlet 24 a vapor outlet 22, solvents and monomers are removed from the degassing chamber 25.
  • Additives 26, for example, can be added to the mixer 20 via a further access be fed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
EP93810658A 1992-10-29 1993-09-20 Pompe à engrenages Expired - Lifetime EP0595764B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH337992 1992-10-29
CH3379/92 1992-10-29

Publications (2)

Publication Number Publication Date
EP0595764A1 true EP0595764A1 (fr) 1994-05-04
EP0595764B1 EP0595764B1 (fr) 1997-10-29

Family

ID=4254688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93810658A Expired - Lifetime EP0595764B1 (fr) 1992-10-29 1993-09-20 Pompe à engrenages

Country Status (5)

Country Link
US (1) US5388974A (fr)
EP (1) EP0595764B1 (fr)
JP (1) JPH06200881A (fr)
DE (1) DE59307598D1 (fr)
ES (1) ES2110077T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19717295A1 (de) * 1997-04-24 1998-10-29 Danfoss As Fluid-Maschine
DE19635706C2 (de) * 1996-09-03 1998-12-03 Andreas Prof Dr Limper Verfahren zum Plastifizieren, Sieben, Dosieren und Fördern hochviskoser Kautschukmischungen und Einrichtung für die Durchführung des Verfahrens
DE19825650C2 (de) * 1998-06-09 2001-03-01 Danfoss As Schmierölversorgungseinrichtung für ein Gerät mit rotierender Gerätewelle

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11247767A (ja) * 1997-12-23 1999-09-14 Maag Pump Syst Textron Ag 歯車ポンプの軸を位置決めするための方法および歯車ポンプ
CA2343238C (fr) * 1998-10-01 2007-07-10 The Dow Chemical Company Pompe a engrenages tres efficace permettant de pomper des liquides a tres forte viscosite
DE102007011644B4 (de) * 2006-03-10 2016-01-14 Robert Bosch Gmbh Hydrostatische Kolbenmaschine in Axialkolbenbauweise mit einem Kombi-Pumpengehäuse für mehrere Triebwerks Nenngrößen und verschiedene Hilfspumpen
DE102006058355A1 (de) * 2006-03-10 2007-09-13 Brueninghaus Hydromatik Gmbh Kombi-Pumpengehäuse für mehrere Nenngrößen
DE202009012158U1 (de) * 2009-09-08 2011-02-03 Hugo Vogelsang Maschinenbau Gmbh Drehkolbenpumpe
DE202010011626U1 (de) 2010-08-20 2010-10-21 Hugo Vogelsang Maschinenbau Gmbh Drehkolbenpumpe
US20140323792A1 (en) * 2013-04-25 2014-10-30 Mp Associates, Inc. Desensitizing explosive materials using a vacuum vessel
KR101704368B1 (ko) * 2013-10-01 2017-02-07 마아크펌프시스템즈아게 개선된 펌프 유입구를 가지는 기어 펌프
US11378076B1 (en) * 2021-01-28 2022-07-05 Shimadzu Corporation Gear pump or motor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2531726A (en) * 1946-01-26 1950-11-28 Roper Corp Geo D Positive displacement rotary pump
US4137023A (en) * 1975-09-03 1979-01-30 Union Carbide Corporation Low energy recovery compounding and fabricating apparatus for plastic materials
EP0189670A1 (fr) * 1985-01-05 1986-08-06 Maag Pump Systems AG Pompes à engrenage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1073834A (fr) * 1952-04-02 1954-09-29 Daimler Benz Ag Compresseur à piston rotatif, en particulier compresseur root pour moteurs à combustion interne
DE1941673A1 (de) * 1969-08-16 1971-02-18 Barmag Barmer Maschf Zahnradpumpe mit keilfoermig verjuengten Einzugskammern
US3837768A (en) * 1973-08-31 1974-09-24 Maag Zahnraeder & Maschinen Ag Gear pump for highly viscous media
US4737087A (en) * 1984-12-10 1988-04-12 Barmag Ag Drive shaft seal for gear pump and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2531726A (en) * 1946-01-26 1950-11-28 Roper Corp Geo D Positive displacement rotary pump
US4137023A (en) * 1975-09-03 1979-01-30 Union Carbide Corporation Low energy recovery compounding and fabricating apparatus for plastic materials
EP0189670A1 (fr) * 1985-01-05 1986-08-06 Maag Pump Systems AG Pompes à engrenage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635706C2 (de) * 1996-09-03 1998-12-03 Andreas Prof Dr Limper Verfahren zum Plastifizieren, Sieben, Dosieren und Fördern hochviskoser Kautschukmischungen und Einrichtung für die Durchführung des Verfahrens
DE19717295A1 (de) * 1997-04-24 1998-10-29 Danfoss As Fluid-Maschine
DE19717295C2 (de) * 1997-04-24 1999-09-23 Danfoss As Fluid-Maschine
DE19825650C2 (de) * 1998-06-09 2001-03-01 Danfoss As Schmierölversorgungseinrichtung für ein Gerät mit rotierender Gerätewelle

Also Published As

Publication number Publication date
US5388974A (en) 1995-02-14
ES2110077T3 (es) 1998-02-01
JPH06200881A (ja) 1994-07-19
DE59307598D1 (de) 1997-12-04
EP0595764B1 (fr) 1997-10-29

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