EP2404061A2 - Pompe à vis sans fin excentrique - Google Patents

Pompe à vis sans fin excentrique

Info

Publication number
EP2404061A2
EP2404061A2 EP10711641A EP10711641A EP2404061A2 EP 2404061 A2 EP2404061 A2 EP 2404061A2 EP 10711641 A EP10711641 A EP 10711641A EP 10711641 A EP10711641 A EP 10711641A EP 2404061 A2 EP2404061 A2 EP 2404061A2
Authority
EP
European Patent Office
Prior art keywords
rotor
eccentric screw
screw pump
stator
longitudinal direction
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
EP10711641A
Other languages
German (de)
English (en)
Other versions
EP2404061B1 (fr
Inventor
Ralf Daunheimer
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.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=40911653&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2404061(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to PL10711641T priority Critical patent/PL2404061T3/pl
Publication of EP2404061A2 publication Critical patent/EP2404061A2/fr
Application granted granted Critical
Publication of EP2404061B1 publication Critical patent/EP2404061B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04C2/10—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
    • 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
    • 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
    • F04C2240/10—Stators
    • 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
    • F04C2240/20—Rotors
    • 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
    • F04C2250/00—Geometry
    • F04C2250/20—Geometry of the rotor
    • F04C2250/201—Geometry of the rotor conical shape

Definitions

  • the invention relates to an eccentric screw pump, in particular for conveying viscous, highly viscous and abrasive media, having a longitudinal direction L, at least comprising a conical, helically wound, at least catchy rotor with a pitch h, with at least one eccentricity e and at least one cross-section d, the in a single- or multi-start conical stator, rotatably arranged, in which between the rotor and stator, a plurality of chambers each having a volume is formed, which serve to convey the medium and in which limits the chambers between the stator and rotor by a sealing line D. are.
  • the invention further relates to an eccentric screw pump, in particular for conveying viscous, highly viscous and abrasive media, having a longitudinal direction L, at least comprising a stepped, helically wound, at least catchy rotor with a pitch h, with at least one eccentricity e and at least one cross section d, which is rotatably arranged in a single or multi-stage staircase-shaped stator.
  • Eccentric screw pumps are well known in the art, so z. B. in DE 633 784 a Eccentric screw pump, in which two helical elements are in one another and in which the outer element has a helix or tooth more than the inner element and in which the pitches of the helical turns of the two elements behave like the gait or tooth numbers, but constant, may be increasing or decreasing, wherein at least three cooperating helical elements are provided, of which the middle has one tooth more than the interior and one tooth less than the exterior.
  • an eccentric screw pump with a conical worm shaft and a housing insert is known, which is characterized in that the eccentric screw shaft has a round, cylindrical base cross-section and a conically rising conical outer diameter, and that the conically wound inner hollow screw with the double pitch of the eccentric screw shaft, causing a conical, hypocycloidal rolling of the eccentric screw shaft on the inner shell of the conical, helical hollow screw.
  • a problem with the progressing cavity pumps of the prior art is that with progressive cavity pumps which have a plurality of chambers, wear phenomena may result in so-called cavitation when the pump is operated by increasing the chamber volume, resulting in that the delivery rate of such an eccentric screw pump is no longer optimal.
  • the eccentric screw pump according to the invention is characterized in that the volumes of each individual chamber between the stator and rotor are the same size.
  • the cross-section d of the rotor decreases in the longitudinal direction of the rotor.
  • About the decrease of the cross section may e.g. with varying change in eccentricity, the chamber volume kept constant.
  • the eccentricity of the rotor in the longitudinal direction L increases or decreases
  • the pitch h of the rotor increases or decreases in the longitudinal direction L
  • the rotor has a decreasing or increasing cross section d in the longitudinal direction. Due to the variations of the parameters described above, the pump power of the eccentric screw pump according to the invention can be further optimized, or adapted to the corresponding needs, which are for example specified by the material to be conveyed.
  • the rotor as wear protection, a coating, for. B. with chromium, with a ceramic material or other materials.
  • stator and / or rotor may consist of an elastomer or a solid. Again, it is possible, depending on the intended application for the eccentric screw according to the invention to provide the appropriate material for the stator and / or rotor.
  • the stator may also comprise an annular or tubular stator shell made of a different material.
  • This stator jacket can be used to protect the stator and thus to increase the service life of the eccentric screw pump.
  • the stator jacket is conically shaped.
  • the stator has a uniform plastic wall thickness.
  • FIG. 1a the longitudinal section through the rotor of an eccentric screw pump according to the invention
  • FIG. 1b shows the view of the rotor of an eccentric screw pump according to the invention at position A;
  • FIG. 1c shows a further view of a rotor of an eccentric screw pump according to the invention at point B;
  • FIG. 3a shows the longitudinal section through a further embodiment of the eccentric screw pump according to the invention
  • 3b shows the view of the rotor of an eccentric screw pump according to the invention at the position A;
  • 3c shows the view of the rotor on the rotor of an eccentric screw pump according to the invention at position B;
  • FIG. 4a shows the longitudinal section through the rotor and stator of an eccentric screw pump according to the invention
  • FIG. 4b shows the view of an eccentric screw pump according to the invention at position A
  • FIG. 4a shows the longitudinal section through the rotor and stator of an eccentric screw pump according to the invention
  • FIG. 4b shows the view of an eccentric screw pump according to the invention at position A
  • FIG. 4b shows the view of an eccentric screw pump according to the invention at position A
  • FIG. 4c shows the view of an eccentric screw pump according to the invention at position B;
  • 5a shows the longitudinal section through an eccentric screw pump according to the invention of a further embodiment
  • FIG. 5b shows the view of an eccentric screw pump according to the invention at position A;
  • 5c shows the view of an eccentric screw pump according to the invention at position B;
  • FIG. 6a shows the longitudinal section through a further embodiment of the eccentric screw pump according to the invention.
  • FIG. 6b shows the view of an eccentric screw pump according to the invention at position A;
  • FIG. 6c shows the view of an eccentric screw pump according to the invention at position B;
  • FIG. 7a shows the longitudinal section through a further embodiment of an eccentric screw pump according to the invention.
  • FIG. 7b shows the view of an eccentric screw pump according to the invention at position A;
  • FIG. 1 shows a rotor 1 of an eccentric screw according to the invention in longitudinal section.
  • the rotor 1 has a pitch h and an eccentricity ei at the beginning of the rotor 1 and an eccentricity e n to the end of the rotor 1.
  • the eccentricity of the rotor 1 increases, so that the dimension e n is greater than the measure egg.
  • the view A A is shown on the starting end of the rotor 1.
  • the rotor 1 has a cross-section di on and also recognizable in this view eccentricity ei.
  • Fig. Ic shows the view B: B of Fig.
  • FIGS. 1 and 2 show the stator 2 of an eccentric screw pump according to the invention.
  • the rotor 1 described above from Fig. Ia can be introduced and thus forms the eccentric screw pump according to the invention, which is characterized in that the individual volumes which are present for the transport of the medium in the longitudinal direction L of the rotor are the same size.
  • the longitudinal view of Fig. 2 can be clearly see the conicity of the stator and the matching thereinto rotor. Due to the conicity of stator 2 and rotor 1 and the corresponding adjustment of pitch, cross-section and / or eccentricity, it is possible to keep the individual volumes of the chambers located in the eccentric screw pump according to the invention constant.
  • FIGS. 1 shows the stator 2 of an eccentric screw pump according to the invention.
  • FIG. 3a, 3b and 3c show a further embodiment of a rotor 1, which can be introduced into an eccentric screw pump according to the invention.
  • the rotor 1 At its beginning (view A: A), the rotor 1 has a cross-section di, which is larger than the cross-section of the rotor 1 at its end (view B: B), which is marked with the dimension d2.
  • view B: B Along the longitudinal direction L of the rotor 1 can be seen a decrease in the cross section of the rotor, which results in that the rotor 1 has a conical shape.
  • the eccentricity e of the rotor starts at the beginning of the rotor 1 (position A) with a size ei and ends at the position B with a maximum value e n .
  • the eccentricity e thus increases in the longitudinal direction of the rotor 1, that is to say from the larger cross section to the smaller cross section d.
  • FIGS. 3b and 3c the respective views A: A and B: B are shown, which make it possible to observe the end or the beginning of the rotor 1.
  • the eccentricity ei at the beginning of the rotor 1, at the point A with the cross-section di is significantly lower than the eccentricity e n , which in Fig. 3c, the one view (view B: B) on the rotor end, shows.
  • the cross section d2 is also smaller than the cross section di.
  • FIG. 4 a shows an eccentric screw pump 100 according to the invention, which has a rotor 1 and a stator 2. Between the rotor 1 and the stator 2 different chamber volumes V3, V 4 , V 5 ... V n of the chambers 3, 4, 5 ... n can be seen, which according to the invention are all the same size. The same size of the volumes just mentioned results from the fact that both the rotor 1 agreed taper and it has adapted thereto eccentricity, pitch and / or cross section of the rotor 1, which is surrounded by the correspondingly shaped stator 2.
  • a sealing line D is formed between the stator 2 and the rotor 1, along which the necessary pressure is built up, which is necessary to the abrasive, highly viscous medium under pressure by the eccentric screw pump 100 to transport. Due to the rotational movement of the rotor 1, this sealing line travels substantially helically along the longitudinal direction L in the direction of the outlet of the eccentric screw pump 100 according to the invention and moves the medium to be transported in the direction of the pump outlet. The medium to be transported which is located within the volumes is thereby moved in the direction of the outlet of the eccentric screw pump 100 according to the invention.
  • the drive of the eccentric screw pump 100 according to the invention can, for. Example, via an electric motor, which is arranged at the end (position A) of the eccentric screw pump according to the invention, which has the cross-section di and rotates at this point the rotor 1. It can also be seen that the cross-section di at the beginning of the rotor 1 is greater than the cross-section d2 to the end of the rotor 1. This is accompanied by the fact that the eccentricity of the eccentric screw pump 100 according to the invention at the beginning, that is in the region of entry in the eccentric screw pump (position A) is lower than the end (position B), that is to the outlet end of the medium of the eccentric screw pump 100 out.
  • the eccentricity at the inlet of the eccentric screw pump (position A) is marked with ei net and the eccentricity at the output (position B) of the eccentric screw pump 100 according to the invention is marked with e n .
  • the views of the entrance area or the end area of the eccentric screw pump 100 according to the invention which are shown in FIGS. 4b and 4c, likewise clearly show once again that the eccentricity increases in the longitudinal direction L of the eccentric screw pump 100 according to the invention or in the longitudinal direction L of the rotor 1 so that ei is smaller than e n . This is associated with the fact that the cross-section di at the beginning of the rotor is greater than the cross-section d2 of the rotor 1 in the end of the eccentric screw pump 100.
  • Figs. 4a to 4c an eccentric screw pump 100 is shown in which both the cross section of the rotor 1 as also the eccentricity e of the rotor 1 has been changed.
  • FIGS. 5a to 5c show a further possible embodiment of the eccentric screw pump 100 according to the invention, which differs from the eccentric screw pump 100 shown in FIGS. 4a to 4c in that the cross section di of the rotor 1 in the longitudinal direction L of the rotor 1 is not changed.
  • V n to keep the volumes V3, V 4, V 5, the same size
  • an eccentric screw pump according to the invention was 100, the pitch h of the rotor or the stator in the longitudinal direction L of the eccentric screw pump according to the invention modified in this embodiment.
  • Fig. 5a it can be seen that the slope h in the longitudinal direction L of the eccentric screw pump 100 according to the invention decreases.
  • FIGS. 6a to 6c respectively show the views along the line A: A and B: B from FIG. 5a, namely the views on the inlet end and the outlet end of this embodiment of FIG It can be seen that the eccentricity ei at the inlet end of the eccentric screw pump is greater than the eccentricity e n in the outlet region.
  • FIGS. 6a to 6c likewise show a further embodiment of the eccentric screw pump 100 according to the invention, which differs from the eccentric screw pump shown in FIGS. 4a to 4c in that in this embodiment both the cross section and the pitch of the rotor or of the rotor Stators were changed.
  • FIGS. 6b and 6c it can be seen that the cross section of the rotor 1 in the inlet region of the eccentric screw pump is greater than the cross section of the rotor 1 in the outlet region of the eccentric screw pump.
  • FIGS. 7a to 7c A further variant of the eccentric screw pump according to the invention is shown in FIGS. 7a to 7c, in which both the eccentricity, the cross section and the pitch of the rotor or the stator have been changed, the individual volumes V 3 , V 4 , V 5 being kept constant were.
  • Fig. 7a can be seen that the slope h decreases in the longitudinal direction L of the eccentric screw pump according to the invention.
  • the change in the cross section of the rotor 1 and the eccentricity e are shown in FIGS. 7b and 7c.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

L'invention concerne une pompe à vis sans fin excentrique (100) notamment destinée au transport de fluides épais, très visqueux et abrasifs, présentant une direction longitudinale (L), comportant un rotor (1) conique, spiralé en forme de vis, comprenant au moins un filet, présentant un pas (h), au moins une excentricité (e1, e2, e3,..., en) et au moins une section transversale (d), logé rotatif dans un stator conique (2) comprenant un ou plusieurs filets. Une pluralité de chambres (3, 4, 5..., n) ayant respectivement un volume (V3, V4, V5..., Vn) est formée entre rotor (1) et stator (2), les chambres (3, 4, 5..., n) servant au transport du fluide et étant délimitées par une ligne d'étanchéité (D) entre le stator (2) et le rotor (1). Les volumes (V3, V4, V5..., Vn) de chaque chambre individuelle (3, 4, 5..., n) entre le stator (2) et le rotor (1) sont de tailles identiques.
EP10711641.0A 2009-03-02 2010-03-02 Pompe à vis sans fin excentrique Revoked EP2404061B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10711641T PL2404061T3 (pl) 2009-03-02 2010-03-02 Mimośrodowa pompa śrubowa

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202009002823U DE202009002823U1 (de) 2009-03-02 2009-03-02 Exzenterschneckenpumpe
PCT/EP2010/052597 WO2010100134A2 (fr) 2009-03-02 2010-03-02 Pompe à vis sans fin excentrique

Publications (2)

Publication Number Publication Date
EP2404061A2 true EP2404061A2 (fr) 2012-01-11
EP2404061B1 EP2404061B1 (fr) 2020-11-11

Family

ID=40911653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10711641.0A Revoked EP2404061B1 (fr) 2009-03-02 2010-03-02 Pompe à vis sans fin excentrique

Country Status (10)

Country Link
US (1) US9109595B2 (fr)
EP (1) EP2404061B1 (fr)
CA (1) CA2754139C (fr)
DE (1) DE202009002823U1 (fr)
DK (1) DK2404061T3 (fr)
ES (1) ES2846680T3 (fr)
PL (1) PL2404061T3 (fr)
PT (1) PT2404061T (fr)
RU (1) RU2535795C2 (fr)
WO (1) WO2010100134A2 (fr)

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JP5802914B1 (ja) * 2014-11-14 2015-11-04 兵神装備株式会社 流動体搬送装置
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AU2017276369B2 (en) * 2016-06-10 2023-06-01 Activate Artificial Lift Inc. Progressing cavity pump and methods of operation
CN106640627B (zh) * 2016-12-30 2018-10-19 北京工业大学 一种等过流面积的锥螺杆-衬套副
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KR102587521B1 (ko) 2019-08-29 2023-10-11 헤이신 엘티디. 1축 편심 나사 펌프
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CA3114159A1 (fr) 2020-04-02 2021-10-02 Abaco Drilling Technologies Llc Stators coniques dans des moteurs a deplacement direct pour corriger les effets de l'inclinaison du rotor
US11859632B2 (en) 2020-11-04 2024-01-02 John Lloyd Bowman Boundary-layer pump and method of use
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DE202022107205U1 (de) 2022-12-23 2024-04-22 Vogelsang Gmbh & Co. Kg Exzenterschneckenpumpe mit gekapselter Statorauskleidung

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Also Published As

Publication number Publication date
US20110305589A1 (en) 2011-12-15
CA2754139C (fr) 2018-07-24
PT2404061T (pt) 2021-01-29
PL2404061T3 (pl) 2021-06-28
RU2011139951A (ru) 2013-04-10
ES2846680T3 (es) 2021-07-28
DE202009002823U1 (de) 2009-07-30
US9109595B2 (en) 2015-08-18
EP2404061B1 (fr) 2020-11-11
DK2404061T3 (da) 2021-02-08
RU2535795C2 (ru) 2014-12-20
CA2754139A1 (fr) 2010-09-10
WO2010100134A2 (fr) 2010-09-10
WO2010100134A3 (fr) 2010-12-29

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