EP4008903B1 - Unité de rotor et pompe à vis excentrique - Google Patents

Unité de rotor et pompe à vis excentrique Download PDF

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Publication number
EP4008903B1
EP4008903B1 EP20211922.8A EP20211922A EP4008903B1 EP 4008903 B1 EP4008903 B1 EP 4008903B1 EP 20211922 A EP20211922 A EP 20211922A EP 4008903 B1 EP4008903 B1 EP 4008903B1
Authority
EP
European Patent Office
Prior art keywords
rotor
drive shaft
rotor unit
shaft
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.)
Active
Application number
EP20211922.8A
Other languages
German (de)
English (en)
Other versions
EP4008903A1 (fr
Inventor
Horst Kelsch
Jürgen AUER
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.)
Viscotec Pumpen und Dosiertechnik GmbH
Original Assignee
Viscotec Pumpen und Dosiertechnik 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 Viscotec Pumpen und Dosiertechnik GmbH filed Critical Viscotec Pumpen und Dosiertechnik GmbH
Priority to EP20211922.8A priority Critical patent/EP4008903B1/fr
Priority to US18/039,932 priority patent/US12018687B2/en
Priority to PCT/EP2021/081274 priority patent/WO2022117300A1/fr
Priority to CN202180091455.7A priority patent/CN116806290A/zh
Publication of EP4008903A1 publication Critical patent/EP4008903A1/fr
Application granted granted Critical
Publication of EP4008903B1 publication Critical patent/EP4008903B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04C2/10—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
    • 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
    • F04C2/1073—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 where one member is stationary while the other member rotates and orbits
    • 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
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • 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
    • F04C15/0065—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
    • 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
    • F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • 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
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F04C2240/601—Shaft flexion

Definitions

  • the flex shaft can be made of a polyetheretherketone (PEEK), polyethylene (PE) or the like, for example.
  • the flexible shaft can also be made of a steel cable, in particular a steel cable that is coated with plastic.
  • the sealing element can be deformed particularly easily, as a result of which the radial movement of the flexible shaft in the drive shaft is not impeded.
  • “bellows-shaped” means in particular that the sealing element is folded or has at least one fold.
  • the rotor unit can also be used several times.
  • the rotor assembly is disposable, it is made of a plastic material.
  • the rotor unit can preferably be sterilized.
  • the rotor unit can be used in biotechnology, for example.
  • the progressing cavity pump 1 combines many positive properties of other pump systems. Like the centrifugal pump, the progressing cavity pump 1 has no suction and pressure valves. Like the piston pump, the progressive cavity pump 1 has excellent self-priming performance. Like the diaphragm or peristaltic pump, the eccentric screw pump 1 can convey any type of inhomogeneous and abrasive media M, which can also contain solids and fibrous materials.
  • a gap 42 running completely around the flex shaft 31 is provided between the flex shaft 31 and the drive shaft 28 .
  • the gap 42 can be an air gap.
  • the gap 42 as in FIG 3 shown, also be filled with a sealant 43.
  • the sealing compound 43 is elastically deformable, so that it does not impede the radial movement of the flex shaft 31 in the gap 42 or only insignificantly.
  • a material with a low Shore hardness can be used for the sealing compound 43 .
  • sealing compound 43 can be a silicone, in particular a two-component silicone, a silicone that cures at room temperature or RTV silicone (Engl .: Room-Temperature-Vulcanizing Silicone), a silicone that cures at high temperatures, a thermoplastic elastomer (TPE), in particular a thermoplastic Polyurethane (TPU), a thermoplastic vulcanizate (TPV), a fluorovinyl methyl silicone rubber (FVMQ) or the like.
  • TPE thermoplastic elastomer
  • TPU thermoplastic Polyurethane
  • TPV thermoplastic vulcanizate
  • FVMQ fluorovinyl methyl silicone rubber
  • the sealing compound 43 can also be foamed, for example.
  • the sealing compound 43 can have an open-pore or a closed-pore structure.
  • the sealing compound 43 can be foam rubber-like.
  • thermoplastic hoses can be welded together in a sterile manner or existing connections can be severed and the hose ends can be welded.
  • Special rapid transfer systems have been developed for connection through a wall.
  • hybrid processes in which single-use systems are combined with conventional stainless steel and glass systems.
  • closed systems in which the one-way systems are linked together in the order of the process steps, and station systems, in which the intermediate products are transported to the next process step using mobile containers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Claims (15)

  1. Unité rotor (27F, 27G, 27H) destinée à une pompe à vis excentrée (1), comprenant
    un arbre de transmission (28) qui peut être entraîné au moyen d'un élément menant (29) de la pompe à vis excentrée (1),
    un rotor hélicoïdal (30), et
    un arbre flexible (31) mettant en prise l'arbre de transmission (28) et le rotor (30),
    dans laquelle l'arbre flexible (31) est logé au moins dans des sections à l'intérieur de l'arbre de transmission (28),
    dans laquelle un espace (42) est prévu entre l'arbre flexible (31) et l'arbre de transmission (28), dans laquelle l'espace (42) s'étend autour de l'arbre flexible (31) et permet un mouvement radial de l'arbre flexible (31) à l'intérieur de l'arbre de transmission (28),
    caractérisée en ce que
    l'arbre de transmission (28), le rotor (30) et l'arbre flexible (31) forment un composant d'une seule pièce.
  2. Unité rotor selon la revendication 1, dans laquelle l'arbre de transmission (28) comprend une surface de palier cylindrique (33) sur l'extérieur, et dans laquelle l'arbre flexible (31) s'étend au moins dans des sections à l'intérieur de la surface de palier (33).
  3. Unité rotor selon la revendication 1 ou la revendication 2, dans laquelle l'arbre de transmission (28) comprend un évidement (36) dans lequel est reçu l'arbre flexible (31), et dans laquelle l'évidement (36) va en s'élargissant à partir d'une première extrémité (37) de l'évidement (36) faisant face à l'opposé du rotor (30) en direction d'une seconde extrémité (38) de l'évidement (36) faisant face au rotor (30).
  4. Unité rotor selon la revendication 3, dans laquelle l'évidement (36) est étagé ou a une forme de cône.
  5. Unité rotor selon la revendication 3 ou la revendication 4, dans laquelle l'arbre flexible (31) est en prise avec l'arbre de transmission (28) au niveau de la première extrémité (37).
  6. Unité rotor selon l'une des revendications 1 à 5, dans laquelle l'espace (42) est rempli, au moins dans des sections, d'un composé d'étanchéité pouvant se déformer élastiquement (43).
  7. Unité rotor selon la revendication 6, dans laquelle le composé d'étanchéité (43) est moussant.
  8. Unité rotor selon l'une des revendications 1 à 7, comprenant en outre un élément d'étanchéité (47) disposé entre l'arbre de transmission (28) et le rotor (30) d'un côté face.
  9. Unité rotor selon la revendication 8, dans laquelle le rotor (30) comprend un épaulement circonférentiel (45), et dans laquelle l'élément d'étanchéité (47) est disposé entre l'épaulement (45) et une surface d'extrémité (39) de l'arbre de transmission (28).
  10. Unité rotor selon la revendication 8 ou la revendication 9, dans laquelle l'élément d'étanchéité (47) a une forme de soufflet.
  11. Unité rotor selon l'une des revendications 1 à 10, dans laquelle l'arbre flexible (31) est reçu complètement à l'intérieur de l'arbre de transmission (28) lorsqu'observé dans une direction longitudinale (L) de l'unité rotor (27F, 27G, 27H).
  12. Unité rotor selon l'une des revendications 1 à 11, dans laquelle l'arbre de transmission (28) comprend, sur l'extérieur, au moins une lèvre d'étanchéité (48, 49), en particulier formée d'un seul tenant avec l'arbre de transmission (28), destinée à étancher l'arbre de transmission (28) par rapport à un carter (2) de la pompe à vis excentrée (1).
  13. Unité rotor selon l'une des revendications 1 à 12, dans laquelle l'arbre de transmission (28), le rotor (30) et l'arbre flexible (31) forment un composant en plastique d'une seule pièce en particulier d'un seul matériau.
  14. Unité rotor selon l'une des revendications 1 à 13, dans laquelle l'ensemble rotor (27F, 27G, 27H) est un article jetable.
  15. Pompe à vis excentrée (1), en particulier tête d'impression 3D, comprenant une unité rotor (27F, 27G, 27H) selon l'une des revendications 1 à 14.
EP20211922.8A 2020-12-04 2020-12-04 Unité de rotor et pompe à vis excentrique Active EP4008903B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP20211922.8A EP4008903B1 (fr) 2020-12-04 2020-12-04 Unité de rotor et pompe à vis excentrique
US18/039,932 US12018687B2 (en) 2020-12-04 2021-11-10 Rotor unit and eccentric screw pump
PCT/EP2021/081274 WO2022117300A1 (fr) 2020-12-04 2021-11-10 Unité de rotor et pompe à vis excentrée
CN202180091455.7A CN116806290A (zh) 2020-12-04 2021-11-10 转子单元和单螺杆泵

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20211922.8A EP4008903B1 (fr) 2020-12-04 2020-12-04 Unité de rotor et pompe à vis excentrique

Publications (2)

Publication Number Publication Date
EP4008903A1 EP4008903A1 (fr) 2022-06-08
EP4008903B1 true EP4008903B1 (fr) 2023-01-25

Family

ID=73726679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20211922.8A Active EP4008903B1 (fr) 2020-12-04 2020-12-04 Unité de rotor et pompe à vis excentrique

Country Status (4)

Country Link
US (1) US12018687B2 (fr)
EP (1) EP4008903B1 (fr)
CN (1) CN116806290A (fr)
WO (1) WO2022117300A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022127309A1 (de) * 2022-10-18 2024-04-18 Visec (Asia) Technology Pte Ltd. Verfahren und Spritzgussform zur Herstellung einer Rotoreinheit für eine Exzenterschneckenpumpe sowie eine Rotoreinheit, eine Statoreinheit und eine Exzenterschneckenpumpe

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545604A (en) * 1946-02-01 1951-03-20 Robbins & Myers Pump
US2545626A (en) * 1946-12-17 1951-03-20 Robbins & Myers Spiral gear pump and allied device
JPS551422A (en) * 1978-06-20 1980-01-08 Kojiro Hamada Monolithic screw pump
US5769618A (en) * 1995-09-25 1998-06-23 Heishin Sobi Kabushiki Kaisha Uniaxial eccentric screw pump having a flexible plastic shaft
JP5070515B2 (ja) * 2007-03-08 2012-11-14 兵神装備株式会社 ロータ駆動機構及びポンプ装置
DE202007018923U1 (de) 2007-08-06 2009-10-15 Visco Tec Pumpen- Und Dosiertechnik Gmbh Dosiervorrichtung zum Dosieren eines Fluids
JP5360387B2 (ja) * 2009-03-31 2013-12-04 兵神装備株式会社 ロータ駆動機構及びそれを備えるポンプ装置

Also Published As

Publication number Publication date
US12018687B2 (en) 2024-06-25
CN116806290A (zh) 2023-09-26
EP4008903A1 (fr) 2022-06-08
US20230417241A1 (en) 2023-12-28
WO2022117300A1 (fr) 2022-06-09

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