DE3637216C1 - Self-cleaning intake screen for take-off of purified liquid from a polluted, flowing medium - Google Patents

Self-cleaning intake screen for take-off of purified liquid from a polluted, flowing medium

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Publication number
DE3637216C1
DE3637216C1 DE3637216A DE3637216A DE3637216C1 DE 3637216 C1 DE3637216 C1 DE 3637216C1 DE 3637216 A DE3637216 A DE 3637216A DE 3637216 A DE3637216 A DE 3637216A DE 3637216 C1 DE3637216 C1 DE 3637216C1
Authority
DE
Germany
Prior art keywords
self
suction strainer
cleaning
screen
flowing medium
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.)
Expired
Application number
DE3637216A
Other languages
German (de)
Inventor
Hans Dr Krause
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
Application filed by Individual filed Critical Individual
Priority to DE3637216A priority Critical patent/DE3637216C1/en
Application granted granted Critical
Publication of DE3637216C1 publication Critical patent/DE3637216C1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/27—Filters with filtering elements which move during the filtering operation with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/52—Regenerating the filter material in the filter by forces created by movement of the filter element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B01D33/801—Driving means, shaft packing systems or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/28—Position of the filtering element
    • B01D2201/287—Filtering elements with a vertical or inclined rotation or symmetry axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/58—Power supply means for regenerating the filter
    • B01D2201/583—Power supply means for regenerating the filter using the kinetic energy of the fluid circulating in the filtering device

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A self-cleaning intake screen is described which has the property of cleaning itself without mechanical apparatuses which are moved directly on the screen. The use of this screen is useful anywhere where polluted or even highly polluted flowing media, for example flowing waters, are to be pumped off. The self-cleaning is performed on the one hand by the flowing medium itself and on the other hand by passive or active axial rotation of the intake screen, at each point in time dirt particles being integrated onto the screen half which faces towards the direction of flow and at the same time the dirt particles are flushed off again and carried away from the screen half which faces away from the direction of flow.

Description

Die Erfindung betrifft ein selbstreinigendes Ansaugsieb zur Entnahme von gereinigter Flüssigkeit aus einem verschmutzten, fließenden Medium nach dem Oberbegriff des Patentanspruchs 1. Ein derartiges selbstreinigendes Ansaugsieb ist bekannt durch die DE 29 28 093 B2. Zur Erzielung der Selbstreinigung ist dort allerdings eine störanfällige Steuerklappeneinrichtung notwendig. Pumpen in verschmutzten oder stark fließenden Medien, zum Beispiel Fließgewässern, benötigen aber zur Aufrechterhaltung der Pumpenfunktion stets offene Ansaugsiebe. Bei solchen Einsätzen verstopfen die Ansaugsiebe in der Ausführung gemäß der DE 29 28 093 B2 bei Störungen an der Steuerklappeneinrichtung jedoch sehr schnell, da die größeren Schwebeanteile auf die Sieboberfläche aufintegriert werden und sich von selbst nicht mehr lösen.The invention relates to a self-cleaning suction strainer Removal of cleaned liquid from a dirty, flowing medium according to the preamble of the claim 1. Such a self-cleaning suction strainer is known from DE 29 28 093 B2. To achieve self-cleaning there is however a control flap device susceptible to failure necessary. Pumping in dirty or heavily flowing media, for example flowing water, but need to maintain the pump function always open suction strainers. Block in such operations the suction strainers in the version according to DE 29 28 093 B2 in the event of faults in the control valve device, however very quickly because the larger amounts of suspended matter on the screen surface be integrated and not by itself solve more.

Die Folge ist eine schlechte oder gar keine weitere Förderung von gereinigter Flüssigkeit oder sogar ein Pumpentotalausfall wegen zu geringer Kühlung des Pumpenmotors.The result is poor or no further funding of cleaned liquid or even a total pump failure due to insufficient cooling of the pump motor.

Der Erfindung liegt die Aufgabe zugrunde, das vorgenannte selbstreinigende Ansaugsieb frei von Verschmutzungen und Verkrustungen zu halten ohne hierzu eine störanfällige Steuerklappeneinrichtung zu benötigen. The invention has for its object the aforementioned self-cleaning suction strainer free of dirt and Keep incrustations without being prone to failure Control valve device required.  

Die Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst. Für die Selbstreinigungsfunktion ist es unerheblich, ob die Lagerung mediendicht ist oder nicht.The object is achieved by the characterizing Features of claim 1 solved. For the self-cleaning function it is irrelevant whether the storage is media-tight is or not.

Die Drehung des selbstreinigenden Ansaugsiebes erfolgt hierbei passiv oder aktiv.The self-cleaning suction strainer rotates here passive or active.

Ein wichtiges Kriterium für die Reinhaltung des Siebes ist außerdem seine Größe. Sie sollte so groß bemessen sein, daß durch das vorbei- und durchströmende Medium eine Geschwindigkeitskomponente auf der Abströmseite nach außen zeigt. Diese Komponente bewirkt, daß die erst kurz anhaftenden Schmutzteilchen nach Drehung des Siebes wieder freigesetzt und vom Medium mitgenommen werden.An important criterion for keeping the sieve clean is also its size. It should be so large that a speed component due to the passing and flowing medium on the downstream side. These Component causes the dirt particles to adhere only briefly released after rotation of the sieve and from Medium.

Die passive Drehbewegung kann durch verschiedene Hilfsmittel, die mit dem Sieb verbunden sind, erreicht werden.The passive rotary movement can be connected to the sieve.

Es können dies sein:These can be:

  • 1. Anemometerflügel (halbkugelförmig oder halbzylindrisch)
    2. Turbinenflügel
    3. Schnecken    1. Anemometer wing (hemispherical or semi-cylindrical)
    2. Turbine blades
    3. Snails

Bei aktiver Drehbewegung erfolgt die Bewegung des Siebes über mechanische Einrichtungen mittels Motoren. When the rotary movement is active, the sieve moves about mechanical devices using motors.  

Nachstehend wird die Erfindung anhand von Ausführungsbeispielen näher erläutert.The invention is described below using exemplary embodiments explained in more detail.

Es zeigtIt shows

Fig. 1 in Axialschnitt und Draufsicht ein selbstreinigendes Ansaugsieb, das eine kugelförmige Gestalt hat und mit (halbkugelförmigen) Anemometerflügeln ausgestattet ist, Fig. 1 in axial section and plan view of a self-cleaning suction strainer, which has a spherical shape and is equipped with (hemispherical) Anemometerflügeln,

Fig. 2 in Axialschnitt und Draufsicht ein selbstreinigendes Ansaugsieb, das eine halbkugelförmige Gestalt hat und mit (halbkugelförmigen) Anemometerflügeln ausgestattet ist, Fig. 2 in axial section and plan view of a self-cleaning suction strainer, which has a hemispherical shape and is equipped with (hemispherical) Anemometerflügeln,

Fig. 3 in Axialschnitt und Draufsicht ein selbstreinigendes Ansaugsieb mit zylindrischer Gestalt, das ebenfalls mit (halbzylindrischen) Anemometerflügeln ausgestattet ist, Fig. 3 in axial section and plan view of a self-cleaning suction strainer of cylindrical shape, which is also equipped with (semi-cylindrical) Anemometerflügeln,

Fig. 4 in Axialschnitt und Draufsicht ein selbstreinigendes Ansaugsieb mit halbkugelförmiger Gestalt, das im Innern mit Turbinenflügeln ausgestattet ist, Fig. 4 in axial cross-section and plan view of a self-cleaning intake screen having a hemispherical shape, which is equipped inside with turbine blades,

Fig. 5 in Axialschnitt und Draufsicht ein selbstreinigendes Ansaugsieb zylindrischer Gestalt mit einer Schnecke im Innern des Ansaugrohres und Fig. 5 in axial section and top view of a self-cleaning suction sieve cylindrical shape with a screw inside the suction pipe and

Fig. 6 eine Darstellung der Strömungsverhältnisse am Ansaugsieb. Fig. 6 shows the flow conditions on the suction strainer.

Alle gezeigten Formen des selbstreinigenden Ansaugsiebes (AS), Kugelform, Halbkugelform und Zylinderform können mit allen gezeigten passiven Antriebselementen wie Anemometerflügeln (AF) oder Turbinenflügeln (TF) oder Schnecke (S) ausgerüstet werden. All shown forms of self-cleaning suction strainer (AS) , spherical shape, hemispherical shape and cylindrical shape can be equipped with all shown passive drive elements such as anemometer blades ( AF) or turbine blades (TF) or screw ( S) .

Bei Anwendung eines Aktivantriebes können ebenfalls alle drei o. a. Formen des Ansaugsiebes (AS) Verwendung finden.When using an active drive, all three of the above-mentioned forms of the suction strainer (AS) can also be used.

Für die Größe des Ansaugsiebes gelten außerdem folgende Parameter:The following also apply to the size of the suction strainer Parameter:

  • 1. Die Sieboberfläche "F" sollte so ausgelegt sein, daß die durchströmende Menge "Md", bei ausgeschalteter Pumpe gemessen, größer ist als die abgepumpte Menge "Mp" also mit x <
    Md = (1 + x) · Mp2. Die Strömungsverhältnisse am Ansaugsieb entsprechen dann den in Fig. 6 aufgezeigten Verhältnissen.    1. The sieve surface "F" should be designed so that the flow rate "Md" , measured when the pump is switched off, is greater than the pumped-out amount "Mp" with x <
    Md = (1 + x) · Mp 2. The flow conditions on the suction strainer then correspond to the conditions shown in FIG. 6.

Das heißtThis means

ist.is.

Der Strömungsbeiwert c w des Ansaugsiebes ergibt sich aus:The flow coefficient c w of the suction strainer results from:

wobei für die freie Strömung und für die Strömung innerhalb des Siebes gilt.being for free flow and for flow applies within the sieve.

Claims (9)

1. Selbstreinigendes Ansaugsieb zur Entnahme von gereinigter Flüssigkeit aus einem verschmutzten, fließenden Medium mit einem Ansaugrohr, das innerhalb des hohlraumförmig ausgebildeten Ansaugsiebes mündet, dadurch gekennzeichnet, daß das Ansaugsieb (AS) an dem Ansaugrohr (AR) drehbar um dessen Achse gelagert ist und daß eine Antriebseinrichtung (AF, TF, S) vorgesehen ist, mittels derer das Ansaugsieb (AS) passiv durch das fließende Medium, oder aktiv in Drehung versetzbar ist.1. Self-cleaning suction strainer for the removal of cleaned liquid from a contaminated, flowing medium with a suction pipe which opens within the hollow-shaped suction strainer, characterized in that the suction strainer (AS) on the suction pipe (AR) is rotatably mounted about its axis and that a drive device (AF, TF, S) is provided, by means of which the suction strainer (AS) can be set passively by the flowing medium or actively set in rotation. 2. Selbstreinigendes Ansaugsieb nach Anspruch 1, dadurch gekennzeichnet, daß die Antriebseinrichtung als am Umfang des Ansaugsiebes (AS) angebrachte Anemometerflügel (AF) für das fließende Medium ausgebildet ist.2. Self-cleaning suction strainer according to claim 1, characterized in that the drive device is designed as an anemometer wing (AF) attached to the circumference of the suction strainer (AS ) for the flowing medium. 3. Selbstreinigendes Ansaugsieb nach Anspruch 2, dadurch gekennzeichnet, daß die Anemometerflügel (AF) eine halbkugelförmige Gestalt haben. 3. Self-cleaning suction strainer according to claim 2, characterized in that the anemometer blades (AF) have a hemispherical shape. 4. Selbstreinigendes Ansaugsieb nach Anspruch 2, dadurch gekennzeichnet, daß die Anemometerflügel (AF) eine halbzylindrische Gestalt haben.4. Self-cleaning suction strainer according to claim 2, characterized in that the anemometer blades (AF) have a semi-cylindrical shape. 5. Selbstreinigendes Ansaugsieb nach Anspruch 1, dadurch gekennzeichnet, daß die Antriebseinrichtung durch Turbinenflügel (TF), die im Innern des Ansaugsiebes (AS) angebracht sind, gebildet ist.5. Self-cleaning suction strainer according to claim 1, characterized in that the drive device is formed by turbine blades (TF ) which are attached to the inside of the suction strainer (AS) . 6. Selbstreinigendes Ansaugsieb nach Anspruch 1, dadurch gekennzeichnet, daß die Antriebseinrichtung durch eine Schnecke (S), die im Innern des Ansaugsiebes (AS) angebracht ist, in das Ansaugrohr (AR) reicht und vom angesaugten Medium passiv in Drehung versetzt wird, gebildet ist.6. Self-cleaning suction strainer according to claim 1, characterized in that the drive device is formed by a worm (S) , which is attached to the inside of the suction strainer (AS) , extends into the suction pipe (AR) and is passively rotated by the suctioned medium is. 7. Selbstreinigendes Ansaugsieb nach Anspruch 1, dadurch gekennzeichnet, daß das Ansaugsieb (AS) durch einen Motor als Antriebseinrichtung aktiv in Drehung versetzbar ist.7. Self-cleaning suction strainer according to claim 1, characterized in that the suction strainer (AS) can be actively rotated by a motor as a drive device. 8. Selbstreinigendes Ansaugsieb nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Ansaugsieb (AS) eine kugelförmige Gestalt hat.8. Self-cleaning suction strainer according to one of claims 1 to 7, characterized in that the suction strainer (AS) has a spherical shape. 9. Selbstreinigendes Ansaugsieb nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Ansaugsieb (AS) eine halbkugelförmige Gestalt hat.9. Self-cleaning suction strainer according to one of claims 1 to 7, characterized in that the suction strainer (AS) has a hemispherical shape.
DE3637216A 1986-10-31 1986-10-31 Self-cleaning intake screen for take-off of purified liquid from a polluted, flowing medium Expired DE3637216C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3637216A DE3637216C1 (en) 1986-10-31 1986-10-31 Self-cleaning intake screen for take-off of purified liquid from a polluted, flowing medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3637216A DE3637216C1 (en) 1986-10-31 1986-10-31 Self-cleaning intake screen for take-off of purified liquid from a polluted, flowing medium

Publications (1)

Publication Number Publication Date
DE3637216C1 true DE3637216C1 (en) 1988-05-11

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ID=6312953

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Application Number Title Priority Date Filing Date
DE3637216A Expired DE3637216C1 (en) 1986-10-31 1986-10-31 Self-cleaning intake screen for take-off of purified liquid from a polluted, flowing medium

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996027422A1 (en) * 1995-03-04 1996-09-12 United Utilities Plc Rotating screen and drive unit
WO2004009212A2 (en) * 2002-07-23 2004-01-29 John Edgar Scragg Fluid filters

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2928093B2 (en) * 1979-07-12 1981-06-04 Ludwig Taprogge Reinigungsanlagen für Röhren-Wärmeaustauscher, 4000 Düsseldorf Device for separating solids from a liquid stream

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2928093B2 (en) * 1979-07-12 1981-06-04 Ludwig Taprogge Reinigungsanlagen für Röhren-Wärmeaustauscher, 4000 Düsseldorf Device for separating solids from a liquid stream

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996027422A1 (en) * 1995-03-04 1996-09-12 United Utilities Plc Rotating screen and drive unit
GB2314033A (en) * 1995-03-04 1997-12-17 United Utilities Plc Rotating Screen and Drive Unit
GB2314033B (en) * 1995-03-04 1998-06-24 United Utilities Plc Rotating Screen and Drive Unit
WO2004009212A2 (en) * 2002-07-23 2004-01-29 John Edgar Scragg Fluid filters
WO2004009212A3 (en) * 2002-07-23 2004-04-29 John Edgar Scragg Fluid filters

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8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee