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EP0184207A2 - Method for manufacturing a trough for a hydraulic screw - Google Patents

Method for manufacturing a trough for a hydraulic screw Download PDF

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Publication number
EP0184207A2
EP0184207A2 EP85115433A EP85115433A EP0184207A2 EP 0184207 A2 EP0184207 A2 EP 0184207A2 EP 85115433 A EP85115433 A EP 85115433A EP 85115433 A EP85115433 A EP 85115433A EP 0184207 A2 EP0184207 A2 EP 0184207A2
Authority
EP
European Patent Office
Prior art keywords
screw
trough
stones
manufacturing
trough stones
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
EP85115433A
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German (de)
French (fr)
Other versions
EP0184207A3 (en
EP0184207B1 (en
Inventor
Karl-August Radlik
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.)
Radlik Karl-August
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Individual
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Publication date
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Priority to AT85115433T priority Critical patent/ATE50835T1/en
Publication of EP0184207A2 publication Critical patent/EP0184207A2/en
Publication of EP0184207A3 publication Critical patent/EP0184207A3/en
Application granted granted Critical
Publication of EP0184207B1 publication Critical patent/EP0184207B1/en
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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/22—Adaptations of pumping plants for lifting sewage

Definitions

  • In-situ concrete troughs are pre-concreted in rough outlines.
  • the screw is then installed and the final screed is removed using a scraper attached to the screw.
  • this creates a small gap that remains the same over the entire circumference.
  • deviations in shape, e.g. due to the manufacture or installation are compensated for by adapting the trough to the screw.
  • a disadvantage is the low strength of the screed applied by hand because it cannot be compacted. Rapid wear has the consequence that the quality of the gap and thus the function of the screw quickly deteriorate.
  • the screw is first immovably fixed in the final position on the foundations. Only then are dimensionally accurate and wear-resistant precast concrete blocks installed, so that it is possible to use the screw itself as a teaching tool and to rule out any deviations from the correct position.
  • the stones can be installed with or without an axial connection. All stones can be brought to their end position together, but also individually by rotating the screw. The end faces of the shaped blocks can be sealed against each other.
  • the screw body 1 is rotated according to Figure 4 so that the shaped blocks 6 hang in their final position.
  • the space between the concrete channel 4 and the shaped blocks 6 is filled with in-situ concrete 7 in order to fix the shaped blocks 6.
  • the attachment of the shaped blocks 6 to the screw body 1 is released and the spacers 5 are removed. This makes the trough with the correct gap and wear-resistant surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Screw Conveyors (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Revetment (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Sewage (AREA)

Abstract

1. Method for manufacturing a trough for a hydraulic screw consisting of ready made concrete trough sections, defined thereby, that the trough sections are being installed only after the installation of the screw, and being laid from above on to the screw with distance holders, and being aligned to the screw, and being fixed at the screw, and are being brought in to their final position by turning of the screw and being fixed in this position.

Description

Die Erfindung betrifft die Trogherstellung bei Wasserförderschnecken.The invention relates to the production of troughs in water screw conveyors.

Wasserförderschnecken - seit Archimedes bekannt und in neuerer Zeit verbreitet zur Abwasserförderung eingesetzt - sind Gleichdruckhebewerke. Eine übergroße Schraube dreht sich in einem koaxialen Trog, der gegen die Horizontale geneigt ist und mit seinem unteren Ende in Wasser eintaucht. Die Gänge der ein- oder mehrgängigen Schnecke bilden mit dem sie umschließenden Trog einzelne Kammern, in denen das Wasser nach oben geschoben wird. Der Spalt zwischen Schnecke und Trog muß sehr klein und sowohl über den ganzen Umfang des Trogs als auch über die ganze Schneckenlänge gleich sein. Die Trogherstellung ist deshalb ausschlaggebend für die Funktion der Schnecke. Es sind verschiedene Verfahren und Ausführungen bekannt, die aber alle gewisse Nachteile aufweisen. Gegenstand der Erfindung ist ein Verfahren, das diese Nachteile vermeidet.

  • Bekannt sind: Tröge aus Ortbeton Tröge aus Stahl Tröge aus vorgefertigten Beton-Formsteinen
  • Literatur: 1 Deutsche Patentschrift 1 163 147
    • 2 österreichische Patentschrift 217 870
    • 3 Nagel, Gerhard - RITZ-Handbuch der Wasserförderschnecken, Selbstverlag RITZ Pumpenfabrik OHG, Schwäb. Gmünd 1968, Seite 59, 62 und 63
    • 4 KSB, Kreiselpumpen - Lexikon, Selbstverlag Klein, Schanzlin & Becker AG, Frankenthal (Pfalz) 1974, Seite 229
    • 5 Nagel, Gerhard - Die Wasserförderschnecke als Vorflut- und Abwasserpumpe - in GWF "Das Gas-und Wasserfach" 100. Jahrgang (1959) Heft 52
    • 6 Radlik,Karl-August - Spezifische technische und hydraulische Merkmale von Wasserförderschnecken - in "Technische Mitteilungen" 75. Jahrgang, Heft 5/1982, Seite 239/240
    • 7 Radlik,Karl-August - Abwasserpumpwerke Teil 1 Wasserförderschnecken - in "Abwassertechnik" (Bauverlag) 35. Jahrgang, Heft 1 Februar 1984, Seite 18/19
Water conveying screws - known since Archimedes and recently used for wastewater production - are constant pressure lifts. An oversized screw rotates in a coaxial trough that is inclined against the horizontal and immersed in water with its lower end. The tunnels of the single- or multi-flight snail form individual chambers with the trough surrounding them, in which the water is pushed upwards. The gap between the screw and the trough must be very small and the same over the entire circumference of the trough as well as over the entire length of the screw. The trough production is therefore crucial for the function of the screw. Various methods and designs are known, but they all have certain disadvantages. The invention relates to a method which avoids these disadvantages.
  • Known are: troughs made of in-situ concrete troughs made of steel troughs made of prefabricated concrete blocks
  • Literature: 1 German patent 1 163 147
    • 2 Austrian patent specification 217 870
    • 3 Nagel, Gerhard - RITZ manual of the water screw conveyors, self-published by RITZ Pumpenfabrik OHG, Schwäb. Gmünd 1968, pages 59, 62 and 63
    • 4 KSB, centrifugal pumps - Lexicon, self-publishing Klein, Schanzlin & Becker AG, Frankenthal (Pfalz) 1974, page 229
    • 5 Nagel, Gerhard - The water screw conveyor as Pre-flow and sewage pump - in GWF "Das Gas- und Wasserfach" 100th year (1959) Issue 52
    • 6 Radlik, Karl-August - Specific technical and hydraulic features of water screw conveyors - in "Technical Announcements" 75th year, issue 5/1982, page 239/240
    • 7 Radlik, Karl-August - Wastewater pumping stations part 1 water conveying screws - in "Abwassertechnik" (Bauverlag) 35th year, issue 1 February 1984, page 18/19

Ortbetontröge werden in groben Umrissen vorbetoniert. Danach wird die Schnecke eingebaut, und mit einem an der Schnecke befestigten Abstreifer wird der endgültige Profilestrich abgezogen. Damit wird, wie gefordert, ein kleiner und über den ganzen Umfang gleichbleibender Spalt.erreicht. Auch Formabweichungen, die z.B. durch die Fertigung oder den Einbau bedingt sind, werden durch die Anpassung des Trogs an die Schnecke kompensiert. Nachteilig ist die geringe Festigkeit des von Hand aufgetragenen Estrichs, weil er nicht verdichtet werden kann. Rascher Verschleiß hat zur Folge, daß die Qualität des Spalts und damit die Funktion der Schnecke schnell schlechter werden.In-situ concrete troughs are pre-concreted in rough outlines. The screw is then installed and the final screed is removed using a scraper attached to the screw. As required, this creates a small gap that remains the same over the entire circumference. Also deviations in shape, e.g. due to the manufacture or installation are compensated for by adapting the trough to the screw. A disadvantage is the low strength of the screed applied by hand because it cannot be compacted. Rapid wear has the consequence that the quality of the gap and thus the function of the screw quickly deteriorate.

Stahltröge werden nicht mit der Schnecke hergestellt. Sie werden nach vorgegebenen Maßen der Schnecke in einer Blechbearbeitungswerkstatt gefertigt. Dabei addieren sich die groben Toleranzen von Trog und Schnecke, so daß die Einhaltung des hydraulisch bedingten Spalts nicht immer möglich ist. Eine zusätzliche Vergrößerung des Spalts ist zum Ausgleich von Formänderungen erforderlich. Nach Einbau des vorgefertigten Trogs muß die Schnecke dem nicht mehr veränderlichen Trog angepaßt und nach ihm ausgerichtet werden. Das Ausrichten der Schnecke nach dem Trog ist, den Schneckenabmessungen entsprechend, eine aufwendige Arbeit, die nicht immer optimal gelingt.Steel troughs are not made with the screw. They are manufactured according to the given dimensions of the screw in a sheet metal processing workshop. The rough tolerances of the trough and screw add up, so that it is not always possible to maintain the hydraulic gap. An additional enlargement of the gap is necessary to compensate for changes in shape. After installing the prefabricated trough, the screw must be adapted to the no longer changeable trough and aligned with it. Aligning the screw according to the trough is a complex task, depending on the screw dimensions, which is not always optimal.

Auch in den Trog aus Fertigbeton-Formsteinen kann die Schnekke erst eingebaut werden, wenn er vor Ort fertig montiert, nach dem Rohbau ausgerichtet und unverrückbar untergossen ist. Die Toleranz der Formsteine ist zwar kleiner als die eines Stahltroges, aber auch sie addiert sich zu der Toleranz der Schnecke. Die Formsteine können zwar beim Einbau des Trogs noch einzeln nach einer Schnur oder nach anderen Hilfsmitteln ausgerichtet werden, aber nach dem Einbau der Schnekke kann man sie nicht mehr bewegen, eine Ausrichtung nach der Schnecke selbst ist darum nicht möglich. Deshalb muß auch beim Trog aus Fertigbeton-Formsteinen die Schnecke dem Trog angepaßt werden. Das Umgekehrte ist nicht möglich.Even in the trough made of pre-cast concrete blocks, the screw can only be installed when it is fully assembled on site, aligned with the shell and undamaged. The tolerance of the shaped stones is smaller than that of a steel trough, but it also adds to the tolerance of the screw. The shaped stones can still be aligned individually using a cord or other aids when installing the trough, but once the snail has been installed you can no longer move it, so alignment with the snail itself is not possible. Therefore, the screw must also be adapted to the trough in the case of prefabricated concrete blocks. The reverse is not possible.

Die beschriebenen Nachteile - Verschleiß bei Ortbeton, nachträglicher Einbau der Schnecke und schlechter Spalt bei Stahl und Fertigbeton - werden nach der Erfindung vermieden. Erfindungsgemäß wird zuerst die Schnecke in endgültiger Position auf den Fundamenten unverrückbar befestigt. Erst danach werden maßgenaue und verschleißfeste Fertigbeton-Formsteine eingebaut, so daß es möglich ist, die Schnecke selbst als Lehre zu benutzen und alle Abweichungen von der richtigen Lage auszuschließen.The disadvantages described - wear in in-situ concrete, subsequent installation of the screw and poor gap in steel and ready-mixed concrete - are avoided according to the invention. According to the invention, the screw is first immovably fixed in the final position on the foundations. Only then are dimensionally accurate and wear-resistant precast concrete blocks installed, so that it is possible to use the screw itself as a teaching tool and to rule out any deviations from the correct position.

Dabei können die Steine mit oder ohne axiale Verbindung eingebaut werden. Es können alle Steine gemeinsam, aber auch einzeln durch Drehung der Schnecke in Endposition gebracht werden. Die Stirnflächen der Formsteine können gegeneinander abgedichtet werden.The stones can be installed with or without an axial connection. All stones can be brought to their end position together, but also individually by rotating the screw. The end faces of the shaped blocks can be sealed against each other.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und-wird im folgenden beschrieben: Figur 1 zeigt den Aufriß einer Wasserförderschnecke, Figur 2, 3 und 4 zeigen einen Querschnitt durch die Schnecke an der in Figur 1 bezeichneten Stelle in aufeinanderfolgenden Ablaufphasen des Verfahrens. In Figur 1 ist der Schneckenkörper,l mit seinen Lagern 2 an den Fundamenten 3 befestigt. In Figur 2 sieht man, daß der Schneckenkörper 1 rechts, links und unten von einem Betonkanal 4 umgeben ist, der vom Schneckenkörper 1 einen ausreichenden Abstand zum Einbau des Troges hat. Nach Figur 3 werden auf den Schneckenkörper 1 Abstandhalter 5 und auf diese die Formsteine 6 gelegt. Die Formsteine 6 werden nach dem Schneckenkörper 1 ausgerichtet und an ihm befestigt. Der Schneckenkörper 1 wird nach Figur 4 so gedreht, daß die Formsteine 6 in ihrer endgültigen Lage hängen. Der Raum zwischen dem Betonkanal 4 und den Formsteinen 6 wird mit Ortbeton 7 ausgefüllt, um die Formsteine 6 festzulegen. Nach dem Abbinden wird die Befestigung der Formsteine 6 am Schneckenkörper 1 gelöst, die Abstandhalter 5 werden entfernt. Damit ist der Trog mit richtigem Spalt und verschleißresistenter Oberfläche hergestellt.An embodiment of the invention is illustrated in the drawing and-will be described hereinafter: Figure 1 shows the elevation of a W asserförderschnecke, 2, 3 and 4 show a cross section through the screw at the position indicated in Figure 1 point in successive phases in execution of the process. In Figure 1 is the snail body, l with its Bearings 2 attached to the foundations 3. In Figure 2 it can be seen that the screw body 1 is surrounded on the right, left and below by a concrete channel 4 which is at a sufficient distance from the screw body 1 for the installation of the trough. According to FIG. 3, spacers 5 are placed on the screw body 1 and the shaped blocks 6 are placed on them. The shaped blocks 6 are aligned with the screw body 1 and fastened to it. The screw body 1 is rotated according to Figure 4 so that the shaped blocks 6 hang in their final position. The space between the concrete channel 4 and the shaped blocks 6 is filled with in-situ concrete 7 in order to fix the shaped blocks 6. After the setting, the attachment of the shaped blocks 6 to the screw body 1 is released and the spacers 5 are removed. This makes the trough with the correct gap and wear-resistant surface.

Claims (7)

1. Verfahren zur Herstellung eines aus Fertigbeton-Formsteinen bestehenden Troges für Wasserförderschnecken, dadurch gekennzeichnet, daß die Trogsteine erst nach der Schneckenmontage eingebracht, mit Abstandhaltern von oben auf die Schnecke gelegt, nach der Schnecke ausgerichtet, an der Schnecke befestigt, durch Drehung der Schnecke in ihre endgültige Lage gebracht und in dieser festgelegt werden.1. A method for producing a trough made of ready-mixed concrete blocks for water screw conveyors, characterized in that the trough stones are only introduced after the screw assembly, placed on the screw with spacers from above, aligned with the screw, fastened to the screw, by rotating the screw brought into their final position and fixed in it. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Trogsteine axial verbunden werden.2. The method according to claim 1, characterized in that the trough stones are connected axially. 3. Verfahren nach Anspruch l, dadurch gekennzeichnet, daß die Trogsteine nicht axial verbunden werden.3. The method according to claim l, characterized in that the trough stones are not connected axially. 4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Trogsteine gemeinsam durch Drehung der Schnecke in Endposition gebracht werden.4. The method according to claim 1, characterized in that the trough stones are brought together by rotating the screw in the end position. 5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Trogsteine einzeln durch Drehung der Schnecke in Endposition gebracht werden.5. The method according to claim 1, characterized in that the trough stones are brought individually into the end position by rotating the screw. 6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Stirnfläche der Trogsteine gegeneinander abgedichtet werden.6. The method according to claim 1, characterized in that the end face of the trough stones are sealed against each other. 7. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Stirnfläche der Trogsteine nicht gegeneinander abgedichtet werden.7. The method according to claim 1, characterized in that the end face of the trough stones are not sealed against each other.
EP85115433A 1984-12-06 1985-12-05 Method for manufacturing a trough for a hydraulic screw Expired - Lifetime EP0184207B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85115433T ATE50835T1 (en) 1984-12-06 1985-12-05 PROCESS FOR PRODUCTION OF TROUGHS FOR WATER CONVEYING SCREWS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843444440 DE3444440A1 (en) 1984-12-06 1984-12-06 METHOD FOR TROUBLE PRODUCTION IN WATER CONVEYORS
DE3444440 1984-12-06

Publications (3)

Publication Number Publication Date
EP0184207A2 true EP0184207A2 (en) 1986-06-11
EP0184207A3 EP0184207A3 (en) 1986-12-03
EP0184207B1 EP0184207B1 (en) 1990-03-07

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ID=6252004

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115433A Expired - Lifetime EP0184207B1 (en) 1984-12-06 1985-12-05 Method for manufacturing a trough for a hydraulic screw

Country Status (3)

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EP (1) EP0184207B1 (en)
AT (1) ATE50835T1 (en)
DE (1) DE3444440A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3913148C1 (en) * 1989-04-21 1990-10-04 Karl-August 7070 Schwaebisch Gmuend De Radlik

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT217870B (en) * 1960-04-26 1961-10-25 Purator Klaeranlagen Grosshand Trough for screw pumps
US3094376A (en) * 1958-10-03 1963-06-18 American Metal Prod Method of construction of low friction elements
DE1163147B (en) * 1960-01-13 1964-02-13 Georg Neidl Dipl Ing Concrete conveyor trough for a sloping water screw
GB1099535A (en) * 1965-06-08 1968-01-17 Naamlooze Vennootschap Machf S Improvements in or relating to screw pumps

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1975186U (en) * 1967-04-19 1967-12-14 Maschf Augsburg Nuernberg Ag TROUGH FOR AN INCLINED CONVEYOR AUGER.
DD151334A1 (en) * 1980-06-06 1981-10-14 Horst Wagner METHOD FOR PRODUCING A CONCRETE CUP

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094376A (en) * 1958-10-03 1963-06-18 American Metal Prod Method of construction of low friction elements
DE1163147B (en) * 1960-01-13 1964-02-13 Georg Neidl Dipl Ing Concrete conveyor trough for a sloping water screw
AT217870B (en) * 1960-04-26 1961-10-25 Purator Klaeranlagen Grosshand Trough for screw pumps
GB1099535A (en) * 1965-06-08 1968-01-17 Naamlooze Vennootschap Machf S Improvements in or relating to screw pumps

Also Published As

Publication number Publication date
EP0184207A3 (en) 1986-12-03
DE3444440A1 (en) 1986-06-19
ATE50835T1 (en) 1990-03-15
DE3444440C2 (en) 1987-08-06
EP0184207B1 (en) 1990-03-07

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