EP1884660A1 - Hélice transporteuse pour une pompe à cavité progressive - Google Patents

Hélice transporteuse pour une pompe à cavité progressive Download PDF

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Publication number
EP1884660A1
EP1884660A1 EP07012876A EP07012876A EP1884660A1 EP 1884660 A1 EP1884660 A1 EP 1884660A1 EP 07012876 A EP07012876 A EP 07012876A EP 07012876 A EP07012876 A EP 07012876A EP 1884660 A1 EP1884660 A1 EP 1884660A1
Authority
EP
European Patent Office
Prior art keywords
screw
pump according
screw pump
webs
eccentric screw
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Withdrawn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
EP07012876A
Other languages
German (de)
English (en)
Inventor
Markus Rosam
Karl-Heinz Grebisz
Melanie Wetzel
Helmuth Goschy
Ulrich Braun
Klaus Gerbl
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.)
Netzsch Pumpen and Systeme GmbH
Original Assignee
Netzsch Pumpen and Systeme GmbH
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 Netzsch Pumpen and Systeme GmbH filed Critical Netzsch Pumpen and Systeme GmbH
Publication of EP1884660A1 publication Critical patent/EP1884660A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04C2/1071—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 the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau 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
    • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
    • F04B19/08—Scoop devices
    • F04B19/12—Scoop devices of helical or screw-type
    • 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
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
    • 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
    • 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
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • 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
    • F04C2240/00—Components
    • F04C2240/60—Shafts

Definitions

  • the invention relates to an eccentric screw pump with a screw conveyor which supplies the suction region of the screw rotor predominantly medium to highly viscous media.
  • Driers are mixed with liquid and then pumped by a pump.
  • a mixing screw which is connected on one side to a motor and on the other side to a screw pump, is seated in the region of a storage container. Between the reservoir and the pump liquid enters the screw area.
  • the screw conveyor consists of a helical band, which is fastened on one side only by means of four struts on the mixer shaft.
  • the DE 43 18 177 is to be taken from a mixing and conveying device.
  • the dry substances pass through a hopper into the area of a mixing screw, in the area also leads a liquid supply.
  • the mixture is then conveyed on to the mixing process by a screw pump.
  • the mixing screw itself consists of a section with a solid screw and a section with paddle and bar-shaped mixing elements.
  • Each pump is designed for a specific flow rate.
  • the suction-side pump area always sufficient medium must be available.
  • the Screw conveyors which are connected upstream of the actual screw or eccentric screw pump, can therefore promote a multiple volume of the pump power. Due to this, in the so-called stuffing space in the intake area, a stowage effect is created with which the risk of bridge formation in the hopper is connected via the auger. Due to this stuffing effect a much higher drive power must be provided as necessary.
  • the object of the invention is to adapt the stability of the screw conveyor to the required power while keeping the drive power constant even with different media.
  • the design according to the invention is of course dependent on which products are to be pumped with which viscosities and any solids present.
  • a screw conveyor having at least two openings, wherein the webs formed between these openings are connected with their Schneckenfuß with the coupling shaft.
  • the height of the apertures may be chosen in the range of 20% to 60% of the height of a screw pitch.
  • the width of the openings will correspond to the width of the webs because of the homogeneous return and uniform loading of the screw.
  • the width of the apertures is greater than the width of the webs.
  • the risk of bridge formation is relatively low, so that here the width of the webs can be greater than that of the breakthroughs.
  • the flow along the coupling shaft can be improved by the webs have a screw course opposite slope and thus provide flow direction.
  • the webs per worm gear can be offset by 30 to 120 ° to each other. So that the screw conveyor is stabilized by the coupling shaft over its entire length, the length of the pipe segments is adapted to the course of the screw conveyor.
  • a design possibility of a screw conveyor 10 with a screw tube 12 is shown.
  • a screw 14 is welded.
  • pipe segments 20 are provided for fixing the screw 14.
  • the pipe segments 20 each terminate at the point where the screw 14 ends in the axial direction.
  • couplings 22 for the two are not provided at both ends provided joints provided.
  • the screw 14 is made of flat band-shaped material.
  • the design of the worm 14 in FIG. 2 can be seen more clearly. From the perspective view, it can be seen that the worm 14 is provided with apertures 24 and webs 26. Each screw root 34 of the webs 26 is connected to the pipe segment 20 or the coupling shaft 32, for example, by a welding operation. While the medium in the axial direction flows through the apertures of the screw conveyor close to the screw tube from the rotor region back to the pump inlet, the screw 14 promotes with their end faces 28, the medium in the direction of the pump rotor. The pump rotor is by a not fully shown joint, which is attached to the clutch 22, with the screw conveyor in positive contact.
  • Fig. 3 shows the design and arrangement of the apertures 24 and webs 26 for a screw conveyor for highly viscous media.
  • the large open spaces of the openings 24 allow the medium very good backflow possibilities to adjust the back pressure in the stuffing chamber to the pump power. In this case, a dehydration of the medium and an increased tendency to bridge formation is prevented and avoided an undesirably high drive power.
  • the openings 24 are wider according to this embodiment than the webs 26.
  • the center of the openings is located respectively on the mid-perpendicular and is therefore offset by 90 ° to each other, resulting in per screw pitch 4 openings 24 and 4 webs 26 result.
  • the height of the openings corresponds to about 50% of the screw height.
  • a screw conveyor 10 can be seen.
  • a coupling shaft 32 is provided as the drive part.
  • a screw 14 is welded, which consists of individual screw segments as in all other embodiments. This embodiment of the screw 14 is used, for example, in low-viscosity media.
  • large end faces 28th more medium enters the rotor area and still prevent the smaller sized breakthroughs increased demand for drive power.
  • FIG. 6 Per each screw pitch, 3 apertures offset by 120 ° are introduced into the worm 14.
  • Fig. 7 shows a uniform distribution of 6 openings 24 and webs 26 again.
  • the height HD of the apertures is 50% compared to the height HS of the screw 14.
  • the width BD of the apertures corresponds to the width BS of the webs.
  • the worm 14 has four apertures 24 and four webs 26, wherein the width BD of the apertures is greater than the width BS of the webs.
  • the height HD of the apertures 24 is 50% of the height HS of the screw 14.
EP07012876A 2006-08-03 2007-06-30 Hélice transporteuse pour une pompe à cavité progressive Withdrawn EP1884660A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006036243A DE102006036243A1 (de) 2006-08-03 2006-08-03 Förderschnecke für Exzenterschneckenpumpe

Publications (1)

Publication Number Publication Date
EP1884660A1 true EP1884660A1 (fr) 2008-02-06

Family

ID=38535631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07012876A Withdrawn EP1884660A1 (fr) 2006-08-03 2007-06-30 Hélice transporteuse pour une pompe à cavité progressive

Country Status (9)

Country Link
US (1) US20080031758A1 (fr)
EP (1) EP1884660A1 (fr)
JP (1) JP2008038907A (fr)
KR (1) KR20080012769A (fr)
CN (1) CN101122287A (fr)
AU (1) AU2007203551A1 (fr)
BR (1) BRPI0703164A (fr)
CA (1) CA2595015A1 (fr)
DE (1) DE102006036243A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009024088A1 (de) 2009-06-06 2010-12-09 Zeus Gmbh Reifenfüllmasse, Verfahren zur Herstellung einer Reifenfüllung und Vorrichtung zur Durchführung des Verfahrens
KR101035078B1 (ko) * 2011-01-14 2011-05-19 주식회사 유성엔지니어링 스크류 펌프
US10087758B2 (en) 2013-06-05 2018-10-02 Rotoliptic Technologies Incorporated Rotary machine
US10436068B2 (en) * 2016-02-12 2019-10-08 General Electric Company Flowpath contouring
CN108373929A (zh) * 2018-05-07 2018-08-07 青岛科技大学 一种废橡胶或废塑料的裂解残渣连续输出装置和方法
CA3112348A1 (fr) 2018-09-11 2020-03-19 Rotoliptic Technologies Incorporated Machines rotatives trochoidales helicoides et trochoidales decalees
USD927968S1 (en) * 2019-03-28 2021-08-17 Ojjo, Inc. Screw anchor
US11815094B2 (en) 2020-03-10 2023-11-14 Rotoliptic Technologies Incorporated Fixed-eccentricity helical trochoidal rotary machines
US11802558B2 (en) 2020-12-30 2023-10-31 Rotoliptic Technologies Incorporated Axial load in helical trochoidal rotary machines

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531892A (en) * 1983-03-14 1985-07-30 Sunds Defibrator Aktiebolag Apparatus for pumping of pulp
DE4121717A1 (de) * 1991-06-07 1992-12-10 Allweiler Ag Pumpe, insbesondere exzenterschneckenpumpe
DE4442060C1 (de) * 1994-11-25 1996-03-14 Netzsch Mohnopumpen Gmbh Exzenterschneckenpumpe, insbesondere zum Fördern von Medien mit hoher Viskosität oder hohem Feststoffgehalt
DE10160335A1 (de) * 2001-12-07 2003-06-18 Ksb Ag Zuführvorrichtung für eine Exzenterschneckenpumpe

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US3271081A (en) * 1964-09-28 1966-09-06 Phillips Petroleum Co Apparatus and process for pumping slurry
DE1277819B (de) * 1965-05-12 1968-09-19 Karl Schlecht Dipl Ing Vorrichtung zum kontinuierlichen Mischen von pulverfoermigem bis feinkoernigem Schuettgut
DE1244723B (de) * 1965-05-12 1967-07-20 Karl Schlecht Dipl Ing Vorrichtung zum kontinuierlichen Mischen von trockenem Gut mit einer Fluessigkeit
US4134736A (en) * 1978-02-22 1979-01-16 E. I. Du Pont De Nemours And Company Steam-polymer separation apparatus
JPS58192814U (ja) * 1982-06-15 1983-12-22 株式会社神戸製鋼所 スクリユ−羽根の構造
JPH0748587Y2 (ja) * 1988-07-12 1995-11-08 兵神装備株式会社 粉体移送装置
DE9211567U1 (fr) * 1992-08-27 1992-10-29 Bug Betriebsanlagen- Und Grundbesitz Gmbh, 8046 Garching, De
DE10118071C2 (de) * 2001-04-11 2003-05-28 Seepex Seeberger Gmbh & Co Exzenter-Schneckenpumpe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531892A (en) * 1983-03-14 1985-07-30 Sunds Defibrator Aktiebolag Apparatus for pumping of pulp
DE4121717A1 (de) * 1991-06-07 1992-12-10 Allweiler Ag Pumpe, insbesondere exzenterschneckenpumpe
DE4442060C1 (de) * 1994-11-25 1996-03-14 Netzsch Mohnopumpen Gmbh Exzenterschneckenpumpe, insbesondere zum Fördern von Medien mit hoher Viskosität oder hohem Feststoffgehalt
DE10160335A1 (de) * 2001-12-07 2003-06-18 Ksb Ag Zuführvorrichtung für eine Exzenterschneckenpumpe

Also Published As

Publication number Publication date
CN101122287A (zh) 2008-02-13
AU2007203551A1 (en) 2008-02-21
CA2595015A1 (fr) 2008-02-03
DE102006036243A1 (de) 2008-02-14
BRPI0703164A (pt) 2008-03-25
US20080031758A1 (en) 2008-02-07
KR20080012769A (ko) 2008-02-12
JP2008038907A (ja) 2008-02-21

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