WO2019149656A1 - Stator pour machine à vis excentrique - Google Patents

Stator pour machine à vis excentrique Download PDF

Info

Publication number
WO2019149656A1
WO2019149656A1 PCT/EP2019/051987 EP2019051987W WO2019149656A1 WO 2019149656 A1 WO2019149656 A1 WO 2019149656A1 EP 2019051987 W EP2019051987 W EP 2019051987W WO 2019149656 A1 WO2019149656 A1 WO 2019149656A1
Authority
WO
WIPO (PCT)
Prior art keywords
pin
stator
stator according
jacket tube
boom
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.)
Ceased
Application number
PCT/EP2019/051987
Other languages
German (de)
English (en)
Inventor
Bruno Kächele
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.)
Wilhelm Kachele GmbH
Original Assignee
Wilhelm Kachele 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 Wilhelm Kachele GmbH filed Critical Wilhelm Kachele GmbH
Priority to CN201980011042.6A priority Critical patent/CN111670291A/zh
Priority to PL19702386.4T priority patent/PL3746638T3/pl
Priority to EP19702386.4A priority patent/EP3746638B1/fr
Priority to RU2020124092A priority patent/RU2787624C2/ru
Priority to ES19702386T priority patent/ES3019232T3/es
Publication of WO2019149656A1 publication Critical patent/WO2019149656A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • F04C2/1075—Construction of the stationary member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F04C2230/231—Manufacture essentially without removing material by permanently joining parts together by welding
    • 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
    • F04C2240/30—Casings or housings

Definitions

  • the invention relates to a stator for an eccentric screw machine, in particular an eccentric screw pump for liquid pulpy or pasty, homogeneous or inhomogeneous media.
  • the input housing and the output housing are braced against each other by Switzerlandbol zen.
  • the outer metallic man tel of the stator is first welded in a recess with a nut into which the screw can be screwed after attachment of the shrink film later.
  • the utility model DE 20 2014 103 665 Ul discloses an anti-rotation, the researchedbil by a stator shell radially from standing, welded to the stator jacket pin.
  • the utility model proposes alternatively to weld to the stator casing a socket into which a round pin is pressed or glued.
  • DE 20 1026 104 173 Ul it is known to provide a Sta tor for an eccentric screw machine with a boom to prevent rotation, which is welded to the tubular casing of Sta tor and projects radially from this.
  • the interpretation ger may be formed as a pin with upset head, which is welded to the jacket tube.
  • the torque support is a critical element. Even at higher loads, it must not be damaged, so that the torque support is maintained and the jacket tube is not damaged. Furthermore, stators of eccentric worm machines are parts which have to travel considerable distances from the manufacturer to the user and therefore have to be made available for shipment.
  • the stator according to the invention is for Exzenterschneckenma machine, in particular eccentric screw pump for liquid, mushy or pasty, homogeneous or inhomogeneous media geeig net. He has a metallic casing tube which is internally provided with an elastomer lining.
  • the mecanicausient- limits a longitudinal passage in the form of a two- or multi-start thread. It serves to accommodate a rotor which carries an external thread with a different number of Gewindegän conditions.
  • the stator is provided with a rotation in the form of a boom, which is releasably connected ver with the jacket tube.
  • the rotation is designed as a boom, which preferably projects radially from the jacket tube and is screwed with egg NEM pin, which is permanently connected to the jacket tube.
  • the boom has an opening provided with a réellege thread opening, which is screwed onto a provided on the pin see external thread.
  • the jacket tube may be cylindrical (circular cross-section) or two (or more) threads have () oval cross-section, wherein the pin can be mounted at one point of Man telrohrs, where the jacket tube has a large outer diameter.
  • the pin is preferably arranged on the jacket tube in a radial orientation and welded to the jacket tube.
  • the pin may have a head whose diameter is greater than the outer diameter of the pin.
  • the connec tion between the jacket tube and the pin can by a linear welded joint, e.g. a ring seam, or by stud welding and thus a planar weld done.
  • the pin is preferably short compared to the cantilever, i. it is shorter than half, preferably shorter than one third, and more preferably shorter than one quarter of the length to be measured in the radial direction of the Ausle gers. This allows the boom to be removed from the stator for transport.
  • protective films e.g. Shrink films simplified.
  • the boom may have a circular cross section and have at one end a threaded blind bore, with which it can be screwed onto the threaded bolt.
  • the leg may be hollow over its entire length, i. be designed as a continuous tube.
  • the flexural rigidity is sufficient radially outward. At the radially inner end of the screwed into the boom pin contributes to increase the flexural rigidity.
  • the boom can have a constant cross section over its entire length.
  • the pin may have been welded to the jacket tube prior to the formation of the elastomer liner.
  • a shrink film is attached to the stator, which can serve the temporary or permanent protection thereof. It is particularly advantageous if the pin breaks through the film at an opening, but the edge of the opening at or at the pin e.g. is held firmly by clamping. As a result, the protective effect of the film remains safe despite the breakthrough.
  • FIG. 4 shows the stator of Figure 1, in a cross-sectional view, taken along the line IV-IV,
  • FIG. 5 shows the stator according to FIG. 3, in a sectional representation
  • FIG. 6 shows the stator according to FIG. 3, in a sectional illustration
  • Figure 7 shows a modified embodiment of the stator with cylinder tube and with anti-rotation in Queritessdar position
  • FIG 8 shows a modified boom, in side view, partially cut.
  • a stator 11 is a Exzenterschneckenma machine illustrates how they serve to promote fluid Me media, in particular mushy or pasty, homogeneous or inhomogeneous media, such as concrete mortar and Spach telmasse, serve.
  • the stator 11 forms according to a first embodiment, an elongated tube with an at least 2-common internal thread profile. It consists of an outer Man telrohr 12, the profiling of the at least two threaded passages 13, 14 determines.
  • the stator may also have a zy-cylindrical jacket tube 12, as it proceeds from Figure 7 ago.
  • stator 11 is provided with an adhesive on the inner surface of the shell 12 elastomeric coating 15, which preferably has a substantially uniform thickness. Accordingly, form the threads 13, 14, as shown in Figure 2, inside the coating as threads 13 ',
  • the thickness of the coating 15 is largely uniform Lich, as shown in Figure 3, smaller differences in thickness V can come. Also at input and output, ie at the two front ends of the stator 11 larger Schichtdi bridges can come about, as Figure 2 illustrates. It is also possible to form the stator 11 with less deep profiling or cylindrical. In this case, the threaded recesses 13, 14 are formed exclusively or predominantly in the coating 15, which then has a locally different thickness. Such an embodiment is illustrated in FIG.
  • the coating 15 is made of a non-metallic mate rial, insbesondre a crosslinked plastic material, such as. A polymer or an elastomer, rubber or derglei surfaces.
  • the material of the coating 15 is ty- Typically, thermally sensitive material that tends to degradation and decomposition at higher temperatures (several 100 ° C).
  • a rotation 16 is attached, which serves to receive and dissipate the longitudinal axis 17 of the stator 11 acting torques.
  • Such torques may be generated during operation by rotation of the rotor 18 (see FIG. 2, FIG.
  • the anti-rotation 16 is formed by a preferably projecting in the radial direction of the casing tube 12 boom 19, which may have, for example, a circular cross-section.
  • the boom 19 may be formed by a round bar with full cross section or also, as shown, ge by a round tube. In any case, it can have a constant cross section over its entire length.
  • the stator 11 facing the end of the boom 19 has a Publ tion with an internal thread 20, by means of which the Ausle ger is fixed to a radially projecting from the casing tube pin 21.
  • boom 19 with along the radial varying cross section.
  • the boom 19 of Figure 8 have a head whose diameter is greater than the diameter of the rest, radially outwardly extending portion.
  • the head may be provided with a threaded blind bore to réelleneh the pin 21 men.
  • the outwardly extending portion may have a circular cross section or a tool attachment, e.g. Wrench have suitable cross-section.
  • the boom 19 may have one of its outside a non-circular structure.
  • the boom 19 at its radially outer end, at its radially inner end or in an inter mediate region have a tool coupling structure.
  • a deviating from the circular shape cross-sectional shape For example, an oval shape cut with two parallel straight from Ab, or a hexagonal shape for attaching a screw benzierls or another torque-exerting work zeugs be provided. It is also possible to form the entire off casual 19 with an outer contour that allows the attachment of a wrench.
  • the boom may have a square along its entire length unaltered rectangular cross-section, along continuous flattenings or another polygonal cross-section.
  • the pin 21 is preferably made of solid in the manner of a screw bolt and provided at its outer periphery with egg nem external thread 22 (see in particular Figure 5), which fits to the internal thread 20.
  • the zy-cylindrical pin 21 of the basic form has at its end facing the jacket tube 12 a preferably flat disc-like head 23 whose outer diameter is preferably not smaller than the outer diameter of the boom 19.
  • the head 23 is fixed to the jacket tube 12 cohesively connected, preferably welded before, for example, the entire surface by a pressure welding or friction welding.
  • an annular uninterrupted around the head 23 leading weld 24 may be provided in the form of a fillet weld.
  • Al ternative welded joint between the head 23 and the Man telrohr 12, in particular welded joints that lead to egg ner planar connection between the head 23 and the Man telrohr 12, may also be provided.
  • the weld between the threaded pin 21 and the casing tube 12 is located outside the thread 22 and be limited to the front end of the threaded pin 21, in particular on his head 23. Therefore, it is ensured that the before the welding of the threaded pin 21 to the Man telrohr attached thread 22 by the welding process takes no damage and in particular is not deformed.
  • the cantilever 19 is preferably disposed at a position of the casing tube 12 at all of the above and below be described embodiments of the stator 11 according to the invention, in which this has a large radius, as is apparent from Figures 1, 3 and 5. This has the advantage that the forces to be transmitted by the connection point between the boom 19 and the jacket tube 12 due to the largest possible Ab stand to the longitudinal axis 17 against mounting in egg nem thread valley are lower.
  • the jacket tube 12 may be provided on its outside with a lacquer and / or a plastic coating.
  • the plastic coating may be gebil det by a shrink film 25, as can be seen in Figure 5.
  • This shrink film can be attached to the casing tube 12 after attaching the pin 21, but before screwing the boom. It can span the pin 21 and tightly enclose Shen. Alternatively, it may be broken by the pin 21.
  • the attachment of the shrink film 25 to the stator 11 initially causes the shrink film 25, the pin 21 wraps a. If the shrink film 25 at the pin 21 at the on screw of the boom 19 is severed, it may have the tendency to crawl away from the pin 21 due to the inherent tension. However, since a Foli envorrat is present on the pin 21, this does not lead to an exposure of the weld. This remains protected. The fiction, contemporary stator 11 is therefore safe to use even in adverse environments. The resulting when screwing the boom 19 and thus breaking through the shrink film 25 hole edge of the film can between the internal thread 20 and the structurage thread 22 and / or between the head 23 and facing him End face of the boom 19 to be clamped. This ensures a corrosion-resistant enclosure of the jacket tube 12, in particular in the region of the weld 24.
  • the cross section of the cantilever 19 does not necessarily have to be round, hexagonal or oval. Different configurations are possible.
  • the cantilever 19 may have a cross-shaped cross section or also a symmetrical or asymmetrical angular cross section, a T cross section, a profile tube cross section or the like.
  • the boom 19, regardless of its cross-section, be formed tapering away from the casing tube 12. In other words, the cross-section of the cantilever 19 may be constant or may decrease radially outward in steps or smooth transitions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un stator (11) destiné à une machine à vis excentrique, en particulier une pompe à vis excentrique pour milieux liquides, pulpeux ou pâteux, homogènes ou non homogènes. Le stator comprend un tube d'enveloppe métallique (12) qui est pourvu intérieurement d'un revêtement en élastomère (15) et qui définit une direction axiale (17), un sécurité anti-torsion (16) se présentant sous la forme d'un bras (19) qui comporte une ouverture pourvue d'un filetage intérieur (20), une broche (21) qui est reliée au tube d'enveloppe (12) et qui est pourvue d'un filetage extérieur. Le filetage intérieur (20) du bras (19) est engrené ou peut être engrené avec le filetage extérieur (22) de la broche (21).
PCT/EP2019/051987 2018-02-02 2019-01-28 Stator pour machine à vis excentrique Ceased WO2019149656A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201980011042.6A CN111670291A (zh) 2018-02-02 2019-01-28 用于偏心螺杆机的定子
PL19702386.4T PL3746638T3 (pl) 2018-02-02 2019-01-28 Stator do ślimakowej maszyny mimośrodowej
EP19702386.4A EP3746638B1 (fr) 2018-02-02 2019-01-28 Stator pour machine à vis excentrique
RU2020124092A RU2787624C2 (ru) 2018-02-02 2019-01-28 Статор для одновинтовой машины
ES19702386T ES3019232T3 (en) 2018-02-02 2019-01-28 Stator for eccentric screw machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202018100587.1U DE202018100587U1 (de) 2018-02-02 2018-02-02 Stator für Exzenterschneckenmaschine
DE202018100587.1 2018-02-02

Publications (1)

Publication Number Publication Date
WO2019149656A1 true WO2019149656A1 (fr) 2019-08-08

Family

ID=61564132

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/051987 Ceased WO2019149656A1 (fr) 2018-02-02 2019-01-28 Stator pour machine à vis excentrique

Country Status (6)

Country Link
EP (1) EP3746638B1 (fr)
CN (1) CN111670291A (fr)
DE (1) DE202018100587U1 (fr)
ES (1) ES3019232T3 (fr)
PL (1) PL3746638T3 (fr)
WO (1) WO2019149656A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024144470A1 (fr) * 2022-12-28 2024-07-04 Polat Maki̇na Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ Configuration de broche de service pour pompes à cavité progressive

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB916155A (en) * 1959-10-13 1963-01-23 Erich Netzsch Improvements in helical gear pumps
DE29818383U1 (de) * 1998-10-14 1999-02-25 USD Formteiltechnik GmbH, 58540 Meinerzhagen Stator für Exzenterschneckenpumpen
EP0987438A1 (fr) 1998-09-18 2000-03-22 ARTEMIS Kautschuk- und Kunststofftechnik GmbH & Cie Securité contre la rotation pour des stators de pompes à vis excentrique
DE19950257A1 (de) 1999-10-18 2001-04-26 Wilhelm Kaechele Gmbh Elastome Exzenterschneckenpumpe mit vollausgekleidetem Stator
DE202010016196U1 (de) * 2010-12-06 2011-03-17 Kunststofftechnik Rodenberg Gmbh Verdrehsicherung
DE202014103665U1 (de) 2014-08-06 2015-08-10 Knauf Pft Gmbh & Co. Kg Stator einer Exzenterschneckenpumpe zum Fördern einer fließfähigen Fördermasse, insbesondere einer Baustoffmischung wie Mörtel
DE202016104173U1 (de) 2016-04-08 2016-08-25 Wilhelm Kächele GmbH Stator für Exzenterschneckenmaschine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014100138B3 (de) * 2014-01-08 2015-03-26 Netzsch Pumpen & Systeme Gmbh Exzenterschneckenpumpe, Bolzengelenk und Verfahren zum Herstellen eines Bolzengelenks

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB916155A (en) * 1959-10-13 1963-01-23 Erich Netzsch Improvements in helical gear pumps
EP0987438A1 (fr) 1998-09-18 2000-03-22 ARTEMIS Kautschuk- und Kunststofftechnik GmbH & Cie Securité contre la rotation pour des stators de pompes à vis excentrique
DE29818383U1 (de) * 1998-10-14 1999-02-25 USD Formteiltechnik GmbH, 58540 Meinerzhagen Stator für Exzenterschneckenpumpen
DE19950257A1 (de) 1999-10-18 2001-04-26 Wilhelm Kaechele Gmbh Elastome Exzenterschneckenpumpe mit vollausgekleidetem Stator
DE202010016196U1 (de) * 2010-12-06 2011-03-17 Kunststofftechnik Rodenberg Gmbh Verdrehsicherung
DE202014103665U1 (de) 2014-08-06 2015-08-10 Knauf Pft Gmbh & Co. Kg Stator einer Exzenterschneckenpumpe zum Fördern einer fließfähigen Fördermasse, insbesondere einer Baustoffmischung wie Mörtel
DE202016104173U1 (de) 2016-04-08 2016-08-25 Wilhelm Kächele GmbH Stator für Exzenterschneckenmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024144470A1 (fr) * 2022-12-28 2024-07-04 Polat Maki̇na Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ Configuration de broche de service pour pompes à cavité progressive

Also Published As

Publication number Publication date
DE202018100587U1 (de) 2018-02-15
EP3746638B1 (fr) 2025-03-12
EP3746638A1 (fr) 2020-12-09
PL3746638T3 (pl) 2025-07-14
RU2020124092A3 (fr) 2022-03-25
CN111670291A (zh) 2020-09-15
EP3746638C0 (fr) 2025-03-12
RU2020124092A (ru) 2022-03-02
ES3019232T3 (en) 2025-05-20

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