EP0554740A1 - Pompe d'entraînement avec dispositif de criblage - Google Patents

Pompe d'entraînement avec dispositif de criblage Download PDF

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Publication number
EP0554740A1
EP0554740A1 EP93101048A EP93101048A EP0554740A1 EP 0554740 A1 EP0554740 A1 EP 0554740A1 EP 93101048 A EP93101048 A EP 93101048A EP 93101048 A EP93101048 A EP 93101048A EP 0554740 A1 EP0554740 A1 EP 0554740A1
Authority
EP
European Patent Office
Prior art keywords
section
sieve
pipe
feed pump
feed
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
EP93101048A
Other languages
German (de)
English (en)
Other versions
EP0554740B1 (fr
Inventor
Hugo Adelhütte
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.)
Oms Klaranlagen GmbH
Original Assignee
Oms Klaranlagen 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 Oms Klaranlagen GmbH filed Critical Oms Klaranlagen GmbH
Publication of EP0554740A1 publication Critical patent/EP0554740A1/fr
Application granted granted Critical
Publication of EP0554740B1 publication Critical patent/EP0554740B1/fr
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

Definitions

  • the present invention relates to a feed pump for waste water, in particular in sewage treatment plants, with a screw conveyor which is rotatably arranged in an inclined feed pipe or feed trough, at the lower end of which there is an inlet opening and at the higher end of which there is an outlet opening.
  • Such screw feed pumps are known per se and are often used in sewage treatment plants because of their robustness and insensitivity, since the wastewater often reaches the sewage treatment plant at a lower level than corresponds to the level in the settling tanks. Pumping up the wastewater is sometimes necessary between different clarification tanks or stages.
  • the incoming wastewater is interspersed with more or less coarse impurities. These are usually intercepted on a so-called rake or a sieve, which are connected upstream or downstream of the feed pump.
  • rake or a sieve which are connected upstream or downstream of the feed pump.
  • this requires a corresponding running path for the waste water, which must be accessible for cleaning the rake or screen.
  • the screening device Regardless of the specific design of the screening device, it is in any case an additional device to the pump with a corresponding space requirement, which also requires energy in the case of active screening devices.
  • the present invention is based on the object of reducing the space requirement for screening devices for waste water and, if appropriate, also reducing their energy consumption.
  • the sieve device can be arranged between the already existing drain opening and the screw conveyor in such a way that the wastewater must forcibly pass through the sieve, but if necessary a separate drain opening or several separate drain openings can also be provided, part of the water drainage through the sieve device and some of the wastewater can escape from other drain openings that are not blocked by the sieve.
  • the feed pump which is present anyway, is thus converted in such a way that it works simultaneously as a sieving device.
  • An embodiment of the invention is particularly preferred in which a sieve forms at least a part of the lower surface thereof in the upper section of the conveying pipe or trough. It is advantageously achieved that the wastewater, while being conveyed up by the screw conveyor in the trough, runs down through the sieve as soon as it has reached the pipe section in which the lower surface is formed by the sieve, at the same time, the impurities retained by the screen and accumulating on it are transported further by the screw conveyor in the direction of the pipe end, which is expediently open or has a collecting device for the material retained by the screen.
  • An embodiment of the invention is particularly preferred in which the conveyor tube, in continuation of the sieve section, has a press section which consists of a tapered or tapering end section of the conveyor tube, into which the conveyor screw reduced to a corresponding cross section extends.
  • the screw conveyor has a reduced pitch in the pressing section.
  • the reduced pitch inevitably entails compression and thus squeezing and dewatering of the material retained by the screen.
  • sieve openings can optionally be provided on the underside of the trough so that the water largely runs out of the material retained by the sieve.
  • the reduced pitch already results from the reduced diameter of the pressing section for the same screw pitch, but it can additionally be reduced even more by a smaller pitch.
  • waste water is pumped from a deep-lying basin 10 into a higher-lying basin 11, which is only indicated by dashed lines.
  • the pump device consists of a pipe 2 revolving screw conveyor 1, which is driven via the shaft 9 by a drive device 5.
  • the water runs through the front opening 2a into the pipe 2 into the first lower screw flight and is gradually conveyed upward by rotating the screw 1 essentially in the lower half of the pipe.
  • a higher section 4 of the pipe 2 In addition to the front opening 2b, it also has a recess 2c located on the underside of this section, at which the otherwise closed tube is replaced by a screen wall 6.
  • the water conveyed by the screw over this end section 4 of the tube 2 then flows downward through the openings of the sieve into the basin 11 arranged underneath.
  • the material retained by the sieve plate 6 is conveyed out of the pump through the front opening 2b of the tube 2 and can be collected in a separate device, for example a container 12, a conveyor belt or the like.
  • the device shown in FIG. 2 largely corresponds to the device just described, but instead of the front outlet opening 2b, a tapered pipe section 7 is initially provided, through which the screw conveyor 1 also extends with a correspondingly reduced diameter.
  • This section 7 serves as a pressing device for the material retained by the screen 6. Due to the reduced pipe cross section and the simultaneously reduced pitch of the screw 1 in this section 7, there is necessarily a compression of the material retained by the screen 6 and conveyed further, this being additionally pressed out, so that further water can run off from this material.
  • the screw walls can be perforated in this upper end section 7 or the tube 2 is again formed in this end section 7 on its underside as a sieve or provided with individual bores.
  • the feed pump according to the invention combines pumping and sieving devices in one device in a space-saving manner, wherein additional energy can be saved if the feed pump according to the invention replaces so-called active sieving devices in which the waste water is pumped through a sieve within a basin.
EP93101048A 1992-02-01 1993-01-24 Pompe d'entraînement avec dispositif de criblage Expired - Lifetime EP0554740B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4202967A DE4202967A1 (de) 1992-02-01 1992-02-01 Foerderpumpe mit siebeinrichtung
DE4202967 1992-02-01

Publications (2)

Publication Number Publication Date
EP0554740A1 true EP0554740A1 (fr) 1993-08-11
EP0554740B1 EP0554740B1 (fr) 1995-09-27

Family

ID=6450824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93101048A Expired - Lifetime EP0554740B1 (fr) 1992-02-01 1993-01-24 Pompe d'entraînement avec dispositif de criblage

Country Status (3)

Country Link
EP (1) EP0554740B1 (fr)
AT (1) ATE128515T1 (fr)
DE (2) DE4202967A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4332268A1 (de) * 1993-09-23 1995-03-30 Geiger Maschf Helmut Reinigungsvorrichtung zur Reinigung von in einem Gerinne fließendem Wasser
DE19520992C2 (de) * 1995-06-08 1999-08-12 Premark Feg L L C N D Ges D St Vorrichtung und Verfahren zum Entfernen von Abfällen aus Wasser
DE10100534B4 (de) * 2001-01-05 2004-05-19 Stefan Barth Bahnkreisende, oszillierende, steigende Schiefe-Ebene
DE102019007315B3 (de) * 2019-10-21 2020-11-05 Stefan Barth Kombirotationshebel mit Förderschnecke für kleine Wasserkraftwerke

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1580002A (fr) * 1967-10-04 1969-08-29
DE2025692A1 (de) * 1969-06-07 1970-12-10 Simon-Hartley Ltd., Etruria Works, Stoke-on-Trent, Staffordshire (Großbritannien) Schraubenpumpe
US3938434A (en) * 1973-03-19 1976-02-17 Cox Clyde H Sludge dewatering
DE3006057A1 (de) * 1980-02-18 1981-08-27 Schreiber-Kläranlagen Dr.-Ing. Aug. Schreiber GmbH & Co KG, 3012 Langenhagen Schneckenpumpe mit unterer aufhaengung
DE3942561C1 (fr) * 1989-08-22 1991-01-10 Hans-Georg Dipl.-Ing. 8434 Berching De Huber

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2929504A (en) * 1958-05-19 1960-03-22 Chain Belt Co Waste-flow screening apparatus
DE3630755A1 (de) * 1986-09-10 1988-03-24 Huber Hans Georg Vorrichtung zum entfernen von rechen- und/oder siebgut aus in einem gerinne stroemender fluessigkeit
DE8905963U1 (fr) * 1989-05-12 1989-08-10 Noggerath & Co, 3061 Ahnsen, De
DE3920196A1 (de) * 1989-06-21 1991-01-10 Huber Hans Georg Dipl Ing Vorrichtung zum entfernen von rechen- und/oder siebgut aus in einem gerinne stroemender fluessigkeit
DE9100126U1 (fr) * 1990-03-14 1991-03-28 Noggerath & Co, 3061 Ahnsen, De

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1580002A (fr) * 1967-10-04 1969-08-29
DE2025692A1 (de) * 1969-06-07 1970-12-10 Simon-Hartley Ltd., Etruria Works, Stoke-on-Trent, Staffordshire (Großbritannien) Schraubenpumpe
US3938434A (en) * 1973-03-19 1976-02-17 Cox Clyde H Sludge dewatering
DE3006057A1 (de) * 1980-02-18 1981-08-27 Schreiber-Kläranlagen Dr.-Ing. Aug. Schreiber GmbH & Co KG, 3012 Langenhagen Schneckenpumpe mit unterer aufhaengung
DE3942561C1 (fr) * 1989-08-22 1991-01-10 Hans-Georg Dipl.-Ing. 8434 Berching De Huber

Also Published As

Publication number Publication date
DE4202967A1 (de) 1993-08-05
EP0554740B1 (fr) 1995-09-27
ATE128515T1 (de) 1995-10-15
DE59300639D1 (de) 1995-11-02

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