EP1297260B1 - Comminutor pump - Google Patents
Comminutor pump Download PDFInfo
- Publication number
- EP1297260B1 EP1297260B1 EP01951434A EP01951434A EP1297260B1 EP 1297260 B1 EP1297260 B1 EP 1297260B1 EP 01951434 A EP01951434 A EP 01951434A EP 01951434 A EP01951434 A EP 01951434A EP 1297260 B1 EP1297260 B1 EP 1297260B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- cutting
- comminutor
- passages
- rotating
- 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 - Lifetime
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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
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/001—Pumps for particular liquids
Definitions
- the invention relates to a comminution pump for conveying of waste water containing solids, as a rotating displacement pump, with an electric motor, with a pump housing, with a fixed pump stator and an eccentrically mounted one Rotor and with a shredding device from at least one fixed and at least one rotating knife, the crushing device over the end remote from the drive shaft of the electric motor of the pump rotor is driven, the blades as one above the other Discs formed with cutting passages the cutting passages are circular or crescent-shaped Form cutting edges and at least two cutting passages in at least one angular position of the rotating Knife overlap at least partially.
- Such a comminution pump is known from DE 198 02 025 C1 known.
- This pump ensures the greatest possible freedom from blockages and undisturbed operation even when you are present of long-fiber and solid components in the medium.
- a shredding device as described in DE 198 02 025 C1 is, not without exception, all long-fibrous contained in the waste water Components crushed satisfactorily.
- Nylon stockings tend to be between the open spaces the knife to be pulled and around the pump rotor or to wrap it around the rotating knife and wind it up. This does not necessarily result in a blockage of the pump or constipation, the mode of operation the pump is limited.
- the invention is therefore based on the object of the comminution device a pump of the type mentioned continue with regard to freedom from constipation and interference Presence of long-fiber and solid components in the To improve the medium.
- Edge sections leading in the direction of rotation of the rotating knife the cutting passages each have a free space between undercut the knives.
- a further significant improvement in the shredding performance the pump according to the invention is achieved in that in the fixed knife only one in relation to the central longitudinal axis of the pump housing offset or eccentrically arranged Cutting passage is provided.
- the shredding pump according to DE 198 02 025 C1 were in contrast to this several cutting passages designed as circular holes provided on a concentric to the center of the Slices running circular arc are arranged.
- the shredding performance of the invention Pump again increased significantly.
- the cutting passage in the fixed knife slightly larger than those is in the rotating knife.
- the rotating knife are preferably two cutting passages are provided.
- the diameter of the rotating knife forming disc smaller than or equal to Half of the diameter of the knife forming the fixed knife Disc is.
- the undercuts are preferably designed so that the Cutting edges of the cutting passages in the direction of rotation leading areas are interrupted. These areas are anyway passive during a cutting process. Such a geometry of the rotating knife has proven to be in almost every way proven optimal. It can be seen that the Passage area slightly increased through the cutting passages becomes.
- the rotating knife is expediently in the conveying direction of the medium to be pumped arranged downstream.
- the pump according to the invention consists of an electric motor, drive shaft, Coupling rod, joints, pump housing 1, pump stator 2 and pump rotor 3 and is known as an eccentric screw pump executed.
- the Pump rotor 3 is in a known manner within the Pump stator 2 via the shaft of an electric motor a coupling rod attached to two joints. As a result, the pump rotor 3 takes place within the pump housing 1 a rotating and slightly radial movement.
- Fig. 1 the suction side of the pump is shown, wherein in a funnel-shaped suction nozzle 4 a fixed knife 5 and a rotating knife 6 are arranged, both as circular discs are formed.
- the suction nozzle 4 and the end of the pump housing 1 remote from the electric motor is coupled to one another by a flange connection 7.
- the rotating knife 6 is non-rotatably on a knife shaft 8 attached, which in turn with a threaded pin 9 in the Front of the pump rotor 3 is screwed, so that a Rotary movement of the eccentrically mounted pump rotor 3 both a rotation as well as a radial deflection of the rotating Knife 6 causes.
- the rotating knife 6 and / or the knife shaft 8 can be adjusted axially with the pump rotor 3 be connected to a setting of the game between the Allow knives 5 and 6.
- the gap adjustment enables also an adjustment of the knives in case of wear.
- the knives 5, 6 provided with cutting passages 10, 11, with 11 the Cutting passages in the rotating knife are designated and at 10 a single cutting passage in the fixed Knife 5 is designated.
- At least the cutting passage 10 in the fixed knife is designed as a circular hole, that tapers downstream of the medium to be pumped and thus forms a peripheral cutting edge 12a.
- the through that Center of the cutting passage 10 leading imaginary longitudinal axis 13 is laterally offset from the central longitudinal axis 14 of the pump housing 1 arranged so that there is an eccentric arrangement of the cutting passage 10 on the as fixed Knife 5 results.
- the Cutting passages 11 on the one hand and the cutting passage 10 on the other hand are approximately in superimposed radius areas arranged so that the cutting passages 10, 11 in certain angular positions of the knives 5, 6 are permeable, i.e. overlap.
- Form holes based on the geometry the cutting passages 10, 11 are each arc-shaped or sickle-shaped cutting edges 12a, 12b.
- the cutting passages 11 in the rotating knife 6 taper upstream of the medium to be conveyed, such as this in particular Fig. 1 can be seen, these are only partially form circumferential cutting edges 12b.
- the direction of rotation of the rotating knife 6 (indicated by arrow 18) to the right, i.e. from the in Fig. 2 selected viewing direction clockwise, the Term leading to a single cutting passage 11 is related.
- the recesses forming the undercuts 15 reduce the open spaces of the superimposed ones Knives 5, 6, which reduces friction and wear as well as preventive blockages.
- the recesses 15 can, for example, of the fixed Knife 5 facing side of the rotating knife 6 have been sunk out in such a way that how this turns out a combination of FIGS. 3 and 5 can be seen on the opposite side of the cutting edge 12b still preserved results in a paragraph 16 in the rotating knife 6, which extends approximately radially.
- This kind of sinking the material of the rotating disc is going through the cutting passages 11 are slightly enlarged.
- the one in the direction of rotation of the rotating knife 6 leading edge area of the Cutting passages 11 is reduced in thickness so that there is no cutting edge.
- the cutting passages form 10, 11 in certain angular positions of the rotating Knife 6 a passage for the medium to be conveyed and about solids contained in this.
- This passage has one approximately elliptical contour, which changes during the rotation of the Knife 6 draws in a sickle or arc, a pulling Cut to any solids contained in the medium to be pumped exercising.
Abstract
Description
Die Erfindung betrifft eine Zerkleinerungspumpe zur Förderung von Feststoffe enthaltendem Abwasser, als rotierende Verdrängerpumpe, mit einem Elektromotor, mit einem Pumpengehäuse, mit einem feststehenden Pumpenstator und einem exzentrisch gelagerten Rotor sowie mit einer Zerkleinerungseinrichtung bestehend aus wenigstens einem feststehenden und wenigstens einem rotierenden Messer, wobei die Zerkleinerungseinrichtung über das von der Antriebswelle des Elektromotors abliegende Ende des Pumpenrotors angetrieben wird, die Messer als übereinanderliegende Scheiben mit Schneiddurchtritten ausgebildet sind, die Schneiddurchtritte kreisbogenförmige oder sichelförmige Schneidkanten bilden und sich wenigstens zwei Schneiddurchtritte in wenigstens einer Winkelstellung des rotierenden Messers wenigstens teilweise überlappen.The invention relates to a comminution pump for conveying of waste water containing solids, as a rotating displacement pump, with an electric motor, with a pump housing, with a fixed pump stator and an eccentrically mounted one Rotor and with a shredding device from at least one fixed and at least one rotating knife, the crushing device over the end remote from the drive shaft of the electric motor of the pump rotor is driven, the blades as one above the other Discs formed with cutting passages the cutting passages are circular or crescent-shaped Form cutting edges and at least two cutting passages in at least one angular position of the rotating Knife overlap at least partially.
Eine solche Zerkleinerungspumpe ist aus der DE 198 02 025 C1 bekannt. Diese Pumpe gewährleistet weitestgehend Verstopfungsfreiheit und einen ungestörten Betrieb auch bei Anwesenheit von langfaserigen und festen Bestandteilen im Fördermedium. Es hat sich jedoch herausgestellt, dass eine solche Zerkleinerungseinrichtung, wie sie in der DE 198 02 025 C1 beschrieben ist, nicht ausnahmslos alle im Abwasser enthaltenen langfaserigen Bestandteile zufriedenstellend zerkleinert. Beispielsweise Nylon-Damenstrümpfe neigen dazu, zwischen die Freiflächen der Messer gezogen zu werden und sich um den Pumpenrotor oder um das rotierende Messer herumzuschlingen und aufzuwikkeln. Hierbei kommt es nicht notwendigerweise zu einer Blokkierung der Pumpe oder zu einer Verstopfung, die Wirkungsweise der Pumpe ist jedoch eingeschränkt.Such a comminution pump is known from DE 198 02 025 C1 known. This pump ensures the greatest possible freedom from blockages and undisturbed operation even when you are present of long-fiber and solid components in the medium. It it has been found, however, that such a shredding device, as described in DE 198 02 025 C1 is, not without exception, all long-fibrous contained in the waste water Components crushed satisfactorily. For example Nylon stockings tend to be between the open spaces the knife to be pulled and around the pump rotor or to wrap it around the rotating knife and wind it up. This does not necessarily result in a blockage of the pump or constipation, the mode of operation the pump is limited.
Der Erfindung liegt daher die Aufgabe zu Grunde, die Zerkleinerungseinrichtung einer Pumpe der eingangs genannten Art weiterhin hinsichtlich Verstopfungs- und Störungsfreiheit bei Anwesenheit von langfaserigen und festen Bestandteilen im Fördermedium zu verbessern. The invention is therefore based on the object of the comminution device a pump of the type mentioned continue with regard to freedom from constipation and interference Presence of long-fiber and solid components in the To improve the medium.
Die Aufgabe wird gemäß der Erfindung dadurch gelöst, dass die in Drehrichtung des rotierenden Messers voreilenden Randabschnitte der Schneiddurchtritte jeweils einen Freiraum zwischen den Messern bildend hinterschnitten sind.The object is achieved according to the invention in that the Edge sections leading in the direction of rotation of the rotating knife the cutting passages each have a free space between undercut the knives.
Hierdurch wird der Wirkungsgrad der Zerkleinerungseinrichtung überraschenderweise deutlich gesteigert. Langfaserige, feste Bestandteile im Fördermedium, wie beispielsweise Nylon-Damenstrümpfe werden zuverlässung zerkleinert. Dies ist vermutlich darauf zurückzuführen, dass durch die erfindungsgemäßen Maßnahmen eine Reduzierung der Freiflächen zwischen den Messern erzielt wird, wodurch letztendlich eine Verringerung der Reibung zwischen Freifläche und zu zerkleinerndem Material erreicht wird. Dies wirkt sich sowohl verschleißmindernd als auch leistungserhöhend aus.As a result, the efficiency of the shredding device Surprisingly, significantly increased. Long-fiber, firm Components in the medium, such as nylon stockings reliability is crushed. This is believed to be attributed to that by the measures according to the invention a reduction in the free space between the knives is achieved, ultimately reducing friction between open space and material to be shredded becomes. This has both a wear-reducing effect also increasing performance.
Eine weiterhin deutliche Verbesserung der Zerkleinerungsleistung der Pumpe gemäß der Erfindung wird dadurch erzielt, dass in dem feststehenden Messer nur ein in Bezug auf die Mittellängsachse des Pumpengehäuses versetzt bzw. exzentrisch angeordneter Schneiddurchtritt vorgesehen ist. Bei der Zerkleinerungspumpe gemäß DE 198 02 025 C1 waren im Gegensatz hierzu mehrere als kreisrunde Löcher ausgebildete Schneiddurchtritte vorgesehen, die auf einem konzentrisch zum Mittelpunkt der Scheiben verlaufenden Kreisbogen angeordnet sind. Durch die Maßnahme, demgegenüber nur einen einzigen Schneiddurchtritt vorzusehen, wird die Zerkleinerungsleistung der erfindungsgemäßen Pumpe nochmals deutlich erhöht.A further significant improvement in the shredding performance the pump according to the invention is achieved in that in the fixed knife only one in relation to the central longitudinal axis of the pump housing offset or eccentrically arranged Cutting passage is provided. With the shredding pump according to DE 198 02 025 C1 were in contrast to this several cutting passages designed as circular holes provided on a concentric to the center of the Slices running circular arc are arranged. Through the Measure, in contrast, only a single cutting passage to provide, the shredding performance of the invention Pump again increased significantly.
Besonders vorteilhaft ist es dabei, wenn der Schneiddurchtritt in dem feststehenden Messer geringfügig größer als diejenigen in dem rotierenden Messer ist. In dem rotierenden Messer sind vorzugsweise zwei Schneiddurchtritte vorgesehen.It is particularly advantageous if the cutting passage in the fixed knife slightly larger than those is in the rotating knife. In the rotating knife are preferably two cutting passages are provided.
Weiterhin vorteilhaft ist es, wenn der Durchmesser der das rotierende Messer bildenden Scheibe kleiner oder gleich der Hälfte des Durchmessers der das feststehende Messer bildenden Scheibe ist. Hierdurch wird weiterhin die Freifläche zwischen den Messern verringert, was letztendlich verschleiß- und reibungsmindernd sowie leistungserhöhend wirkt.It is also advantageous if the diameter of the rotating knife forming disc smaller than or equal to Half of the diameter of the knife forming the fixed knife Disc is. As a result, the open space between the knives, which ultimately reduces wear and reduces friction as well as increasing performance.
Die Hinterschnitte sind vorzugsweise so ausgebildet, dass die Schneidkanten der Schneiddurchtritte in den in Drehrichtung voreilenden Bereichen unterbrochen sind. Diese Bereiche sind ohnehin bei einem Schneidvorgang passiv. Eine solche Geometrie des rotierenden Messers hat sich als in nahezu jeder Hinsicht optimal erwiesen. Es ist ersichtlich, dass hierdurch auch die Durchtrittsfläche durch die Schneiddurchtritte leicht erhöht wird.The undercuts are preferably designed so that the Cutting edges of the cutting passages in the direction of rotation leading areas are interrupted. These areas are anyway passive during a cutting process. Such a geometry of the rotating knife has proven to be in almost every way proven optimal. It can be seen that the Passage area slightly increased through the cutting passages becomes.
Zweckmäßigerweise ist das rotierende Messer in Förderrichtung des zu pumpenden Mediums stromabwärts angeordnet.The rotating knife is expediently in the conveying direction of the medium to be pumped arranged downstream.
Weiterhin ist es vorteilhaft, wenn sich der Schneiddurchtritt des feststehenden Messers stromabwärts verjüngt und eine umlaufende abgeschrägte Schneidkante bildet.It is also advantageous if the cutting passage of the fixed knife tapers downstream and a revolving one forms bevelled cutting edge.
Zweckmäßigerweise erweitern sich die Schneiddurchtritte des rotierenden Messers stromabwärts.The cutting passages of the expediently expand rotating knife downstream.
Die Erfindung wird nachstehend an Hand eines in den Zeichnungen dargestellten Ausführungsbeispiels erläutert.The invention is described below with reference to one in the drawings illustrated embodiment explained.
Es zeigen:
- Fig. 1
- eine Teilansicht des Pumpengehäuses im Bereich der Saugseite mit einer darin angeordneten Zerkleinerungseinrichtung im Schnitt,
- Fig. 2
- einen Schnitt entlang der Linien II-II in Fig. 1,
- Fig. 3
- einen Schnitt entlang der Linien III-III in Fig. 1,
- Fig. 4
- eine Ansicht in Richtung des mit IV bezeichneten Pfeils in Fig. 3 und
- Fig. 5
- eine Ansicht in Richtung des mit V bezeichneten Pfeils in Fig. 3.
- Fig. 1
- 1 shows a partial view of the pump housing in the area of the suction side with a comminution device arranged therein,
- Fig. 2
- 2 shows a section along the lines II-II in FIG. 1,
- Fig. 3
- 2 shows a section along the lines III-III in FIG. 1,
- Fig. 4
- a view in the direction of the arrow labeled IV in Fig. 3 and
- Fig. 5
- 3 shows a view in the direction of the arrow labeled V in FIG. 3.
Die Pumpe gemäß der Erfindung besteht aus Elektromotor, Antriebswelle,
Kuppelstange, Gelenken, Pumpengehäuse 1, Pumpenstator
2 und Pumpenrotor 3 und ist als bekannte Exzenterschneckenpumpe
ausgeführt. Der Einfachheit halber ist die
Pumpe, die bis auf das Zerkleinerungswerk von herkömmlicher
Bauart ist, in den Figuren nicht vollständig dargestellt. Der
Pumpenrotor 3 wird auf bekannte Art und Weise innerhalb des
Pumpenstators 2 über die Welle eines Elektromotors mittels
einer an zwei Gelenken befestigten Kuppelstange angetrieben.
Hierdurch vollzieht der Pumpenrotor 3 innerhalb des Pumpengehäuses
1 einen drehende und leicht radiale Bewegung.The pump according to the invention consists of an electric motor, drive shaft,
Coupling rod, joints,
In Fig. 1 ist die Saugseite der Pumpe dargestellt, wobei in
einem trichterförmigen Saugstutzen 4 ein feststehendes Messer
5 und ein rotierenden Messer 6 angeordnet sind, die beide als
kreisrunde Scheiben ausgebildet sind. Der Saugstutzen 4 und
das von dem Elektromotor abliegende Ende des Pumpengehäuses 1
ist durch eine Flanschverbindung 7 aneinander gekoppelt.In Fig. 1 the suction side of the pump is shown, wherein in
a funnel-shaped suction nozzle 4 a
Das rotierende Messer 6 ist drehfest an einer Messerwelle 8
befestigt, die wiederum mit einem Gewindezapfen 9 in der
Stirnseite des Pumpenrotors 3 verschraubt ist, so dass eine
Drehbewegung des exzentrisch gelagerten Pumpenrotors 3 sowohl
eine Rotation als auch eine radiale Auslenkung des rotierenden
Messers 6 bewirkt. Das rotierende Messer 6 und/oder die Messerwelle
8 können axial verstellbar mit dem Pumpenrotor 3
verbunden sein, um eine Einstellung des Spiels zwischen den
Messern 5 und 6 zu ermöglichen. Auch können das rotierende
Messer 6 und/oder die Messerwelle 8 axial nachgiebig mit dem
Pumpenrotor 3 verbunden sein, wie dies beispielsweise in der
DE 198 02 025 C1 beschrieben ist, um eine elastische Spalteinstellung
zwischen dem feststehenden Messer 5 und dem rotierenden
Messer 6 zu gewährleisten. Die Spaltverstellung ermöglicht
auch ein Nachstellen der Messer bei Verschleiß. The rotating
Wie dies den Fig. 2 bis 5 zu entnehmen ist, sind die Messer 5,
6 mit Schneiddurchtritten 10, 11 versehen, wobei mit 11 die
Schneiddurchtritte in dem rotierenden Messer bezeichnet sind
und mit 10 ein einziger Schneiddurchtritt in dem feststehenden
Messer 5 bezeichnet ist. Zumindest der Schneiddurchtritt 10 in
dem feststehenden Messer ist als kreisrundes Loch ausgeführt,
das sich stromabwärts des zu fördernden Mediums verjüngt und
so eine umlaufende Schneidkante 12a ausbildet. Die durch das
Zentrum des Schneiddurchtritts 10 führende gedachte Längsachse
13 ist seitlich versetzt zu der Mittellängsachse 14 des Pumpengehäuses
1 angeordnet, so dass sich eine exzentrische Anordnung
des Schneiddurchtritts 10 auf dem als feststehenden
Messer 5 ergibt.As can be seen in FIGS. 2 to 5, the
In dem rotierenden Messer 6 sind insgesamt zwei Schneiddurchtritte
11 angeordnet, und zwar im Winkelabstand von 180°. Die
Schneiddurchtritte 11 einerseits und der Schneiddurchtritt 10
andererseits sind etwa in übereinanderliegenden Halbmesser-Bereichen
angeordnet, so dass die Schneiddurchtritte 10, 11 in
bestimmten Winkelstellungen der Messer 5, 6 durchlässig sind,
d.h. sich überlappen. Auf Grund der Geometrie der Löcher bilden
die Schneiddurchtritte 10, 11 jeweils kreisbogenförmige
bzw. sichelförmige Schneidkanten 12a, 12b aus. Die Schneiddurchtritte
11 in dem rotierenden Messer 6 verjüngen sich
stromaufwärts des zur fördernden Mediums, wie dies insbesondere
Fig. 1 zu entnehmen ist, wobei diese die nur teilweise
umlaufenden Schneidkanten 12b ausbilden.There are a total of two cutting passages in the rotating
Die Unterbrechung der Schneidkanten 12b des rotierenden Messers
6, dessen Durchmesser etwa dem halben Durchmesser oder
weniger des feststehenden Messers 5 entspricht, sind auf in
dem rotierenden Messer 6 auf dessen dem feststehenden Messer
5 zugewandter Seite vorgesehene Ausnehmungen 15 zurückzuführen,
die jeweils Hinterschneidungen der Schneiddurchtritte 11
bilden, und zwar in den in Drehrichtung des rotierenden Messers
6 voreilenden Randabschnitten 17. Wie dies Fig. 2 zu
entnehmen ist, ist die Drehrichtung des rotierenden Messers 6
(durch den Pfeil 18 angedeutet) rechts herum, d.h. aus der in
Fig. 2 gewählten Blickrichtung im Uhrzeigersinn, wobei der
Begriff voreilend auf einen einzigen Schneiddurchtritt 11
bezogen ist. Die die Hinterschneidungen bildenden Ausnehmungen
15 reduzieren die Freiflächen der übereinanderliegend angeordneten
Messer 5, 6, was sich reibungs- und verschleißmindernd
sowie Verstopfungen vorbeugend auswirkt.The interruption of the cutting edges 12b of the
Die Ausnehmungen 15 können beispielsweise von der dem feststehenden
Messer 5 zugewandten Seite des rotierenden Messers
6 aus eingesenkt worden sein, derart, dass sich, wie dies aus
einer Kombination der Fig. 3 und 5 ersichtlich ist, auf der
der noch erhaltenen Schneidkante 12b gegenüberliegenden Seite
in dem rotierenden Messer 6 jeweils einen Absatz 16 ergibt,
der sich etwa radial erstreckt. Durch diese Art der Einsenkung
des Materials der rotierenden Scheibe wird der Durchgang durch
die Schneiddurchtritte 11 geringfügig vergrößert. Der in Drehrichtung
des rotierenden Messers 6 voreilende Randbereich der
Schneiddurchtritte 11 ist in seiner Dicke so verringert, dass
dort keine Schneidkante vorhanden ist.The
Bei dem in den Figuren dargestellten Ausführungsbeispiel sind
die Schneiddurchtritte 11 des rotierenden Messers 6 an ihrem
Außenumfang dort, wo sie mit dem Außenumfang des rotierenden
Messers 6 zusammentreffen, durchbrochen. Solche Durchbrechungen
müssen nicht notwendigerweise vorgesehen sein, vielmehr
kann der Durchmesser des rotierenden Messers 6 so gewählt
sein, dass die Schneiddurchtritte 11 umfänglich geschlossen
sind.In the embodiment shown in the figures
the cutting
Wie dies Fig. 2 zu entnehmen ist, bilden die Schneiddurchtritte
10, 11 in bestimmten Winkelstellungen des rotierenden
Messers 6 einen Durchgang für das zu fördernde Medium und etwa
in diesem enthaltenen Feststoffen. Dieser Durchgang hat eine
etwa elliptische Kontur, die sich während der Drehbewegung des
Messers 6 sichel- oder bogenförmig zuzieht, einen ziehenden
Schnitt auf etwa in dem zu fördernden Medium enthaltene Feststoffe
ausübend. As can be seen in FIG. 2, the cutting passages form
10, 11 in certain angular positions of the rotating
Knife 6 a passage for the medium to be conveyed and about
solids contained in this. This passage has one
approximately elliptical contour, which changes during the rotation of the
- 11
- Pumpengehäusepump housing
- 22
- Pumpenstatorpump stator
- 33
- Pumpenrotorpump rotor
- 44
- Saugstutzensuction
- 55
- feststehendes Messerfixed knife
- 66
- rotierendes Messerrotating knife
- 77
- Flanschverbindungflange
- 88th
- Messerwellecutterhead
- 99
- Gewindezapfenthreaded pin
- 1010
- SchneiddurchtritteCutting passages
- 1111
- SchneiddurchtritteCutting passages
- 12a12a
- Schneidkantencutting edges
- 12b12b
- Schneidkantencutting edges
- 1313
- Längsachselongitudinal axis
- 1414
- Mittellängsachse des PumpengehäusesCentral longitudinal axis of the pump housing
- 1515
- Ausnehmungenrecesses
- 1616
- Absatzparagraph
- 1717
- Randabschnitteedge sections
- 1818
- Pfeilarrow
Claims (7)
- Comminutor pump for conveying waste water containing solids, in the form of a rotating positive-displacement pump, having an electrical motor, having a pump housing, having a fixed pump stator and an eccentrically supported rotor and having a comminutor device comprising at least one fixed and at least one rotating cutter, the comminutor device being driven by means of the end of the pump rotor remote from the drive shaft of the electrical motor, the cutters being in the form of discs that lie on top of one another and that have cutting passages, the cutting passages forming circular-arc-shaped or sickle-shaped cutting edges, and at least two cutting passages overlapping one another at least partially in at least one angular position of the rotating cutter, characterised in that the leading edge portions of the cutting passages in the direction of rotation of the rotating cutter (6) are undercut in each case to form a free space between the cutters (5, 6).
- Comminutor pump according to claim 1, characterised in that only one single cutting passage (10), which is arranged in an offset or eccentric manner relative to the central longitudinal axis (14) of the pump housing (1), is provided in the fixed cutter (5).
- Comminutor pump according to claim 2, characterised in that the cutting passage (10) in the fixed cutter (5) is larger than those in the rotating cutter (6).
- Comminutor pump according to any one of claims 1 to 3, characterised in that the diameter of the disc forming the rotating cutter (6) is smaller than or equal to half the diameter of the disc forming the fixed cutter (5).
- Comminutor pump according to any one of claims 1 to 4, characterised in that the undercuts are in a form such that the cutting edges (12b) of the cutting passages (11) of the rotating cutter (6) are interrupted in the leading regions in the direction of rotation.
- Comminutor pump according to any one of claims 1 to 5, characterised in that the cutting passage (10) of the fixed cutter (5) tapers downstream and forms a circumferential inclined cutting edge (12a).
- Comminutor pump according to any one of claims 1 to 6, characterised in that the cutting passages (11) of the rotating cutter (6) widen downstream and they each form a partially circumferential inclined cutting edge (12b).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20011412U | 2000-07-04 | ||
| DE20011412U DE20011412U1 (en) | 2000-07-04 | 2000-07-04 | Shredding pump |
| PCT/DE2001/002351 WO2002002948A1 (en) | 2000-07-04 | 2001-06-26 | Comminutor pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1297260A1 EP1297260A1 (en) | 2003-04-02 |
| EP1297260B1 true EP1297260B1 (en) | 2004-02-11 |
Family
ID=7943380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01951434A Expired - Lifetime EP1297260B1 (en) | 2000-07-04 | 2001-06-26 | Comminutor pump |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1297260B1 (en) |
| AT (1) | ATE259469T1 (en) |
| AU (1) | AU2001272356A1 (en) |
| DE (3) | DE20011412U1 (en) |
| HU (1) | HUP0301705A2 (en) |
| WO (1) | WO2002002948A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH439982A (en) * | 1964-06-29 | 1967-07-15 | Bachmann Walter | Slurry pump |
| DE1923821U (en) * | 1965-07-06 | 1965-09-16 | Eugen Soeding | Eccentric screw pump. |
| DE1950502U (en) * | 1966-07-30 | 1966-11-24 | Eugen Soeding | Eccentric screw pump. |
| DE19802025C1 (en) * | 1998-01-21 | 1999-06-10 | Werner Dipl Ing Arnswald | Grinding pump for pumping waste water contg. solid material |
-
2000
- 2000-07-04 DE DE20011412U patent/DE20011412U1/en not_active Expired - Lifetime
-
2001
- 2001-06-26 DE DE50101483T patent/DE50101483D1/en not_active Expired - Fee Related
- 2001-06-26 EP EP01951434A patent/EP1297260B1/en not_active Expired - Lifetime
- 2001-06-26 WO PCT/DE2001/002351 patent/WO2002002948A1/en active IP Right Grant
- 2001-06-26 AU AU2001272356A patent/AU2001272356A1/en not_active Abandoned
- 2001-06-26 AT AT01951434T patent/ATE259469T1/en not_active IP Right Cessation
- 2001-06-26 DE DE10193285T patent/DE10193285D2/en not_active Expired - Fee Related
- 2001-06-26 HU HU0301705A patent/HUP0301705A2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ATE259469T1 (en) | 2004-02-15 |
| HUP0301705A2 (en) | 2004-01-28 |
| DE10193285D2 (en) | 2003-06-05 |
| WO2002002948A1 (en) | 2002-01-10 |
| EP1297260A1 (en) | 2003-04-02 |
| DE20011412U1 (en) | 2001-11-15 |
| DE50101483D1 (en) | 2004-03-18 |
| AU2001272356A1 (en) | 2002-01-14 |
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