DE102008057849A1 - Cutting device for e.g. sewage pump, has cutting body coaxially surrounded by fixed cutting ring, where annular gap between cutting body and ring decreases in its width from inlet aperture to rotor in opening region close to pump inlet - Google Patents
Cutting device for e.g. sewage pump, has cutting body coaxially surrounded by fixed cutting ring, where annular gap between cutting body and ring decreases in its width from inlet aperture to rotor in opening region close to pump inlet Download PDFInfo
- Publication number
- DE102008057849A1 DE102008057849A1 DE200810057849 DE102008057849A DE102008057849A1 DE 102008057849 A1 DE102008057849 A1 DE 102008057849A1 DE 200810057849 DE200810057849 DE 200810057849 DE 102008057849 A DE102008057849 A DE 102008057849A DE 102008057849 A1 DE102008057849 A1 DE 102008057849A1
- Authority
- DE
- Germany
- Prior art keywords
- cutting
- ring
- pump
- cutting body
- cutting device
- 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.)
- Withdrawn
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
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/001—Pumps for particular liquids
- F04C13/002—Pumps for particular liquids for homogeneous viscous liquids
- F04C13/004—Pumps for particular liquids for homogeneous viscous liquids with means for fluidising or diluting the material being pumped
-
- 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
-
- 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
- F04C2240/20—Rotors
-
- 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
- F04C2240/80—Other components
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Die Erfindung betrifft eine Schneidvorrichtung einer Pumpe mit einem am Ende der Pumpenwelle und/oder am Pumpenrotor befestigten, sich drehenden Schneidkörper, der insbesondere dem Pumpeneinlass zugewandt ist.The The invention relates to a cutting device of a pump with a attached to the end of the pump shaft and / or attached to the pump rotor, rotating Cutting body, which in particular faces the pump inlet.
Es sind Pumpen mit unterschiedlichsten Schneidwerken bekannt, bei denen Schneidklingen rotierend angeordnet sind. Bei diesen bekannten Pumpen werden die Schneiden insbesondere durch in der geförderten Flüssigkeit enthaltenen Steine leicht stumpf. Darüber hinaus neigen sie zum Verstopfen, wenn größere Substanzen wie Hygieneprodukte, Wisch- und Putztücher sowie Strumpfhosen in die Pumpe gelangen.It Pumps are known with a variety of cutting units, in which Cutting blades are arranged rotating. In these known pumps In particular, the cutters are supported by in the promoted liquid contained stones slightly dull. In addition, they tend to clog, if larger substances such as hygiene products, cleaning and cleaning cloths and tights in the Get pump.
Aufgabe der Erfindung ist es, die Schneidvorrichtung einer Pumpe so zu verbessern, dass bei einfacher Konstruktion, wenig Bauteilen und einfacher Montage und Wartung die Standzeit erheblich verlängert und die Gefahr einer Verstopfung verringert ist.task the invention is to improve the cutting device of a pump so that with simple construction, few components and easy installation and maintenance significantly prolongs the life and the risk of Blockage is reduced.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, das der Schneidkörper von einem feststehenden Schneidring koaxial umgeben ist und zwischen Schneidkörper und Schneidring ein Ringspalt besteht, der zumindest in dem dem Pumpeneinlass näheren Anfangsbereich in seiner Breite von der Eintrittsöffnung zum Pumpenrotor hin abnimmt.These Task is inventively characterized solved, that of the cutting body is coaxially surrounded by a fixed cutting ring and between cutting body and cutting ring is an annular gap, at least in the Closer to the pump inlet Starting area in its width from the inlet opening to Pump rotor decreases.
Eine solche Pumpe mit Schneidvorrichtung hat unter anderem folgende Vorteile:
- – optimale Zerkleinerung auch größerer Feststoffe,
- – Erzeugung einer in Richtung des Ansaugbereichs der Pumpe gerichteten Strömung, die den Transport der Feststoffe in Richtung des Schneidwerks verbessert,
- – bessere Aufnahme der Feststoffe in das Schneidwerk und sicherer Transport der Stoffe durch das Schneidwerk während des Zerkleinerungsvorgangs,
- – Kombination von Schneideinrichtung und Ansaugkegel in einem Bauteil,
- – Reduktion der Anzahl von Einzelteilen, die zum Aufbau der Schneid- bzw. Ansaugeinrichtung benötigt werden,
- – Verwendung von Bauteilen, die kostengünstig hergestellt werden können insbesondere im Feingussverfahren,
- – Vereinfachung der Montage der Schneid- und Ansaugeinrichtung,
- – Vereinfachung der Justierung der Schneideinrichtung und
- – Reduktion der Material- und Montagekosten.
- - optimal comminution of even larger solids,
- Generation of a flow directed towards the suction area of the pump, which improves the transport of the solids towards the cutting unit,
- Better absorption of the solids into the cutting unit and safe transport of the materials through the cutting unit during the comminution process,
- - combination of cutting device and suction cone in one component,
- Reduction of the number of parts needed to construct the cutting or suction device,
- Use of components which can be produced inexpensively, in particular by precision casting,
- Simplification of the assembly of the cutting and suction device,
- - Simplification of the adjustment of the cutting device and
- - Reduction of material and assembly costs.
Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen aufgeführt.advantageous Embodiments of the invention are listed in the subclaims.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt uns werden im Folgenden näher beschrieben. Es zeigenembodiments The invention is illustrated in the drawings Following closer described. Show it
Die
kombinierte Ansaug- und Schneidvorrichtung besteht im Wesentlichen
aus zwei Teilen; einem mit der Welle
Der
rotierende Schneidkörper
An
der Oberfläche
des rotierenden Schneidkörpers
befinden sich zwischen insbesondere schraubenförmig umlaufenden Schneiden
An
seiner der Pumpenhydraulik zugewendeten Seite weist der rotierende
Schneidkörper
eine Bohrung oder einen Anschluss-Stumpf
Der
Schneidring
In
einer weiteren Ausgestaltung des Schneidköpers
In
einer weiteren Ausgestaltung des Schneidkörpers
In
einer weiteren Ausgestaltung der Ansaug- und Schneideinrichtung
sind der Schneidkörper
In
einer bevorzugten Ausgestaltung der Ansaug- und Schneideinrichtung,
wie in
Weitere Ausgestaltungen, bestehen darin, dass
- – der Schneidkörper eine zylindrische Kontur besitzt, d. h., dass sowohl der Bereich A als auch der Bereich B eine zylindrische Gestalt haben und der Schneidring im Bereich C eine zylindrische Gestalt und im Bereich D eine konvexe Gestalt besitzt,
- – der Schneidkörper im Bereich A eine zylindrisch Form und im Bereich B eine kegel- oder kugelkalottenförmige Kontur besitzt und der Schneidring sowohl im Bereich C als auch im Bereich D eine zylindrische Innenkontur besitzt, oder
- – in denen sowohl der Schneidkörper als auch der Schneidring rein zylindrische Konturen besitzen.
- The cutting body has a cylindrical contour, ie both the region A and the region B have a cylindrical shape and the cutting ring has a cylindrical shape in the region C and a convex shape in the region D,
- - The cutting body in the area A has a cylindrical shape and in the area B a conical or spherical cap-shaped contour and the cutting ring has a cylindrical inner contour both in the area C and in the area D, or
- - In which both the cutting body and the cutting ring have purely cylindrical contours.
In
der bevorzugen Ausgestaltung der Ansaug- und Schneideinrichtung
ist die axiale Länge
E des mit Schneidnuten
Weitere Ausgestaltungen,
- – in denen die Länge E des mit Schneidnuten besetzten Teils des Schneidkörpers kleiner oder gleich der Länge F des Schneidrings ist, und/oder
- – sich
das untere Ende des Schneidkörpers
auf gleicher Höhe
wie das untere Endes des Pumpengehäuses
4 befindet, oder - – in denen das untere Ende des Schneidkörpers innerhalb der Höhe des Schneidrings liegt
- - In which the length E of the cutting grooves occupied part of the cutting body is less than or equal to the length F of the cutting ring, and / or
- - The lower end of the cutting body at the same height as the lower end of the pump housing
4 located, or - - In which the lower end of the cutting body is within the height of the cutting ring
In
einer bevorzugten Ausgestaltung der Ansaug- und Schneideinrichtung,
wie in
Weitere Ausgestaltungen,
- – in denen der zylindrische Bereich A des Schneidkörpers und der zylindrische Bereich C des Schneidrings unterschiedliche Höhen aufweisen, und/oder
- – in denen das dem Ansaugbereich der Pumpenhydraulik zugewandte Ende des Schneidrings und das dem Wellenanschluss zugewandte Ende des zylindrischen Teils des Schneidkörpers in unterschiedlichen Höhen liegen,
- - In which the cylindrical portion A of the cutting body and the cylindrical portion C of the cutting ring have different heights, and / or
- In which the end of the cutting ring facing the suction region of the pump hydraulics and the end of the cylindrical part of the cutting body facing the shaft connection are at different heights,
In
einer weiteren Ausgestaltung des Schneidrings
Die beschriebenen Ausgestaltungsvarianten der Ansaug- und Schneideinrichtung können nicht nur bei Abwasserpumpen, sondern auch bei Pumpen eingesetzt werden, die z. B. in der Lebensmittelindustrie oder in der Landwirtschaft Verwendung finden, und bei denen eine Zerkleinerung von Feststoffbeimengungen zum Fluid erwünscht ist.The described embodiment variants of the suction and cutting device can not only used in sewage pumps but also in pumps be, z. In the food industry or in agriculture Use, and in which a comminution of Feststoffbeimengungen desired to the fluid is.
Von Bedeutung ist auch,
- – dass der Schneidkörper
2 am Wellenende einer Zentrifugalpumpe oder rotierenden Verdrängerpumpe, z. B. einer Exzenterschneckenpumpe befestigt ist, - – dass
der Schneidkörper
2 und/oder der Schneidring3 aus Metallguss bestehen, und - – dass
zumindest die dem Förderstrom
ausgesetzte Oberfläche
des Schneidkörpers
2 und/oder des Schneidrings3 eine Oberflächenbeschichtung aus einem härteren Material als dem des Schneidkörpers2 und/oder des Schneidrings3 insbesondere aus Keramik aufweist.
- - that the cutting body
2 at the shaft end of a centrifugal or rotary positive displacement pump, z. B. an eccentric screw pump is attached, - - that the cutting body
2 and / or the cutting ring3 consist of cast metal, and - - That at least the surface exposed to the flow of the cutting body
2 and / or the cutting ring3 a surface coating of a harder material than that of the cutting body2 and / or the cutting ring3 in particular made of ceramic.
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810057849 DE102008057849A1 (en) | 2008-11-18 | 2008-11-18 | Cutting device for e.g. sewage pump, has cutting body coaxially surrounded by fixed cutting ring, where annular gap between cutting body and ring decreases in its width from inlet aperture to rotor in opening region close to pump inlet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810057849 DE102008057849A1 (en) | 2008-11-18 | 2008-11-18 | Cutting device for e.g. sewage pump, has cutting body coaxially surrounded by fixed cutting ring, where annular gap between cutting body and ring decreases in its width from inlet aperture to rotor in opening region close to pump inlet |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008057849A1 true DE102008057849A1 (en) | 2010-05-20 |
Family
ID=42105175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810057849 Withdrawn DE102008057849A1 (en) | 2008-11-18 | 2008-11-18 | Cutting device for e.g. sewage pump, has cutting body coaxially surrounded by fixed cutting ring, where annular gap between cutting body and ring decreases in its width from inlet aperture to rotor in opening region close to pump inlet |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008057849A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2966527A1 (en) * | 2010-10-20 | 2012-04-27 | Ksb Sas | DILACERATOR PUMP |
US20130280107A1 (en) * | 2010-12-22 | 2013-10-24 | Herborner Pumpenfabrik J.H. Hoffmann GmbH & Co., KG | Pump device |
CN103899565A (en) * | 2012-12-28 | 2014-07-02 | 上海连成(集团)有限公司 | Cutting type submersible axial-flow pump |
CN105351210A (en) * | 2015-12-15 | 2016-02-24 | 河北潜达特种泵业有限公司 | Feeding packing auger type submersible mud pump |
CN108201917A (en) * | 2016-12-16 | 2018-06-26 | 姚晓宁 | Ceramic Composite lining plate of cone crusher and preparation method thereof |
Citations (6)
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---|---|---|---|---|
DE2515411A1 (en) * | 1974-04-16 | 1975-10-30 | Itt Ind Gmbh Deutsche | PUMP |
DE3340858A1 (en) * | 1982-11-30 | 1984-05-30 | A. Ahlström Oy, Noormarkku | Process and device for defibrating pretreated waste paper |
EP0233859B1 (en) * | 1986-02-14 | 1990-10-17 | Röhren- und Pumpenwerk Rudolf Bauer Aktiengesellschaft | Self-priming centrifugal pump for handling liquids mixed with a high fiber content |
DE2612910C2 (en) * | 1976-03-26 | 1992-07-23 | Albert 5204 Lohmar De Blum | |
US6406635B1 (en) * | 2001-07-17 | 2002-06-18 | Ruthman Pump And Engineering, Inc. | Machine tool coolant system including a pump with chopping mechanism at inlet |
US6951445B2 (en) * | 2001-06-13 | 2005-10-04 | Weir Warman Ltd | Apparatus for use in slurry pumps |
-
2008
- 2008-11-18 DE DE200810057849 patent/DE102008057849A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2515411A1 (en) * | 1974-04-16 | 1975-10-30 | Itt Ind Gmbh Deutsche | PUMP |
DE2612910C2 (en) * | 1976-03-26 | 1992-07-23 | Albert 5204 Lohmar De Blum | |
DE3340858A1 (en) * | 1982-11-30 | 1984-05-30 | A. Ahlström Oy, Noormarkku | Process and device for defibrating pretreated waste paper |
EP0233859B1 (en) * | 1986-02-14 | 1990-10-17 | Röhren- und Pumpenwerk Rudolf Bauer Aktiengesellschaft | Self-priming centrifugal pump for handling liquids mixed with a high fiber content |
US6951445B2 (en) * | 2001-06-13 | 2005-10-04 | Weir Warman Ltd | Apparatus for use in slurry pumps |
US6406635B1 (en) * | 2001-07-17 | 2002-06-18 | Ruthman Pump And Engineering, Inc. | Machine tool coolant system including a pump with chopping mechanism at inlet |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2966527A1 (en) * | 2010-10-20 | 2012-04-27 | Ksb Sas | DILACERATOR PUMP |
EP2444673A3 (en) * | 2010-10-20 | 2017-09-27 | Ksb S.A.S | Comminutor pump |
US20130280107A1 (en) * | 2010-12-22 | 2013-10-24 | Herborner Pumpenfabrik J.H. Hoffmann GmbH & Co., KG | Pump device |
KR20140031188A (en) * | 2010-12-22 | 2014-03-12 | 헤르보너 펌펜파브릭 제이.에이치. 호프만 게엠베하 운트 코. 카게 | Pump device |
KR101879007B1 (en) * | 2010-12-22 | 2018-08-17 | 헤르보너 펌펜파브릭 제이.에이치. 호프만 게엠베하 운트 코. 카게 | Pump device |
US10301001B2 (en) * | 2010-12-22 | 2019-05-28 | Herborner Pumpenfabrik J.H. Hoffman Gmbh & Co. Kg | Pump device |
CN103899565A (en) * | 2012-12-28 | 2014-07-02 | 上海连成(集团)有限公司 | Cutting type submersible axial-flow pump |
CN105351210A (en) * | 2015-12-15 | 2016-02-24 | 河北潜达特种泵业有限公司 | Feeding packing auger type submersible mud pump |
CN108201917A (en) * | 2016-12-16 | 2018-06-26 | 姚晓宁 | Ceramic Composite lining plate of cone crusher and preparation method thereof |
CN108201917B (en) * | 2016-12-16 | 2019-11-08 | 邯郸史威新材料有限公司 | The preparation method of Ceramic Composite lining plate of cone crusher |
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Legal Events
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---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R005 | Application deemed withdrawn due to failure to request examination |