NO138296B - WASTEWATER PUMP. - Google Patents
WASTEWATER PUMP. Download PDFInfo
- Publication number
- NO138296B NO138296B NO193673A NO193673A NO138296B NO 138296 B NO138296 B NO 138296B NO 193673 A NO193673 A NO 193673A NO 193673 A NO193673 A NO 193673A NO 138296 B NO138296 B NO 138296B
- Authority
- NO
- Norway
- Prior art keywords
- impeller
- recesses
- sealing rings
- pump
- sealing
- Prior art date
Links
- 239000002351 wastewater Substances 0.000 title claims description 6
- 238000007789 sealing Methods 0.000 claims description 30
- 239000000835 fiber Substances 0.000 description 3
- 210000000056 organ Anatomy 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2288—Rotors specially for centrifugal pumps with special measures for comminuting, mixing or separating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Description
Foreliggende oppfinnelse vedrører en avløpsvannpumpe med et hus og et i forhold til dette mellom tetningsringer roterbart lagret løpehjul, hvor tetningsringene og løpehjulet har skarpkantede uttagninger for samvirke med hverandre som rive- og skjæreelemen-ter. The present invention relates to a waste water pump with a housing and an impeller rotatably mounted in relation to this between sealing rings, where the sealing rings and the impeller have sharp-edged recesses for cooperation with each other as tearing and cutting elements.
Ved pumping av f.eks. avløpsvann eller avfallsvann fra cellulose-fabrikker foreligger den ulempe at tråder, lange fibre eller pin-ner kiler seg inn i spalten mellom løpehjulet og tetningsringen og forårsaker en altfor stor økning av effektbehovet. Lange fibre og tråder blokerer også pumpen på følgende måte. Det i huset herskende høyere trykk forårsaker i spalten en strømning med hvilken trådenes ender føres med til sugesiden, hvorifra de i strømningsretningen igjen bukter seg gjennom løpehjulet inn i huset og litt efter litt blokerer løpehjulet. When pumping e.g. waste water or waste water from cellulose factories has the disadvantage that threads, long fibers or pins wedge themselves into the gap between the impeller and the sealing ring and cause an excessively large increase in the power requirement. Long fibers and threads also block the pump in the following way. The higher pressure prevailing in the housing causes a flow in the gap with which the ends of the threads are carried along to the suction side, from where in the direction of flow they again bend through the impeller into the housing and little by little block the impeller.
Formålet med nærværende oppfinnelse er å tilveiebringe en enkel anordning for å fjerne dé foran nevnte funksjonsforstyrrelser i en pumpe av dette slag eller i en tilsvarende anordning som omfatter i forhold til hverandre roterende og tettende omkret-ser eller kanter og hvor man søker å hindre at fibre, tråder osv. setter seg fast mellom tetningskantene. Dette formål opp-fylles ved at pumpen ifølge oppfinnelsen har fått de i kravene angitte karakteristiske trekk. The purpose of the present invention is to provide a simple device for removing the above-mentioned malfunctions in a pump of this type or in a similar device which includes in relation to each other rotating and sealing circumferences or edges and where one seeks to prevent fibers from , threads etc. get stuck between the sealing edges. This purpose is fulfilled by the fact that the pump according to the invention has been given the characteristic features specified in the requirements.
Oppfinnelsen skal beskrives nærmere i det efterfølgende i form av noen utførelseseksempler og under henvisning til tegningene, hvor: fig..1 viser et snitt gjennom en avfallsvannpumpe efter linjen B-B i fig. 2, forsynt med riveorgan ifølge oppfinnelsen, The invention will be described in more detail in what follows in the form of some design examples and with reference to the drawings, where: fig..1 shows a section through a waste water pump along the line B-B in fig. 2, provided with a tearing device according to the invention,
fig. 2 viser et snitt efter linjen A-A i fig. 1; og fig. 2 shows a section along the line A-A in fig. 1; and
fig. 3-11 viser forskjellige utførelsesformer av riveorgan i pumpen. fig. 3-11 shows different embodiments of the tear device in the pump.
I fig. 1 er delen 1 tetningsringen i en sentrifugalpumpe og 2 dens løpehjul, som er montert på en roterende aksel 3. Tetningsringen er festet i et hus 8 ved løpehjulets innstrømningsåpning 5. En annen tetningsring 4 er plassert på den motsatte side av løpehjulets innløp.. ,1. tetningsringene og løpehjulets ringfor-mede deler som tilsammen danner spaltene, er det uttatt ett eller flere spor 6 og 7. In fig. 1, the part 1 is the sealing ring in a centrifugal pump and 2 its impeller, which is mounted on a rotating shaft 3. The sealing ring is fixed in a housing 8 at the impeller inflow opening 5. Another sealing ring 4 is located on the opposite side of the impeller inlet.. , 1. the sealing rings and the ring-shaped parts of the impeller which together form the slots, one or more grooves 6 and 7 have been taken out.
Disse spor eller uttagninger 6 og 7 danner, når løpehjulet ro-terer, effektive skjæreorgan som skjærer av alle langstrakte gjenstander som kommer inn i spalten og ellers ville kile seg inn i tetningsspalten og forårsake blokering av denne og for-styrrelser i pumpens funksjonering. For å opprettholde tetnings-virkning mellom tetningsringene og løpehjulet bør sporets aksiale dybde L^ og L 2 (fig. D være mindre enn spaltens aksiale utstrekning L^, dvs. tetningsringens overlapping av løpehjulet (f.eks. ca. 0,8 L). These grooves or recesses 6 and 7 form, when the impeller rotates, effective cutting means that cut off all elongated objects that enter the gap and would otherwise wedge themselves into the sealing gap and cause blockage of this and disturbances in the functioning of the pump. In order to maintain a sealing effect between the sealing rings and the impeller, the axial depth of the groove L^ and L 2 (fig. D) should be smaller than the axial extent of the gap L^, i.e. the overlap of the sealing ring with the impeller (e.g. approx. 0.8 L) .
Sporenes eller uttagningenes 6 resp. 7 bredde kan være den samme i tetningsringen som i løpehjulet, eller breddene kan avvike fra hverandre. Det samme gjelder deres antall. De rivende spor kan også erstattes med rivende vinger (dvs. sporene er så brede at det mellom dem bare blir igjen vingelignende riveorgan). Riveorganene kan også være skråstilt for å øke skjæreeffekten. The slots or the outlets 6 resp. 7 width can be the same in the sealing ring as in the impeller, or the widths can differ from each other. The same applies to their number. The tearing grooves can also be replaced with tearing wings (ie the grooves are so wide that only wing-like tearing means remain between them). The shredders can also be inclined to increase the cutting effect.
I fig. 3 - 11 er vist noen hensiktsmessige utførelser av riveorganene. Fig. 3 viser en såkalt endetetning, hvor riveorganene kan utgjøres enten av spor eller vinger. I utførelsesfor-men ifølge fig. 4 er det fortrinnsvis utformet vinger i løpe-hjulet og i tetningsringen 1 trekantede spor. Fig. 5 viser en dobbeltetningsring, som strekker seg på begge sider av løpe-hjulets kant. Riveorganene er enten spor eller vinger. In fig. 3 - 11 show some appropriate designs of the tearing means. Fig. 3 shows a so-called end seal, where the tearing means can be made up of either grooves or wings. In the embodiment according to fig. 4, there are preferably designed wings in the impeller and triangular grooves in the sealing ring 1. Fig. 5 shows a double sealing ring, which extends on both sides of the edge of the impeller. The tearing organs are either tracks or wings.
I det i fig. 6 viste tilfelle er løpehjulet og tetningsringen forsynt med vinger eller uttagninger anbragt utenfor selve tet-ningen. Fig. 7 viser med bunn forsynte spor utformet i tetningsring og løpehjul. Fig. 8 viser en del av skjærespalten når ri-vesporene er skråstilt for å gjøre skjærevirkningen mere effektiv. Fig. 9 viser et lignende riss som fig. 8 når riveuttagningene er trekantede. Fig. 10 viser et snitt gjennom løpehjulet og tetningsringen når riveorganene utgjøres av radielt skråttstilte uttagninger. Ved utførelsen ifølge fig. 11 er skjærekantene tilveiebragt ved skråstilte hull i tetningsringen, hvilke er fordelt langs ring-ens periferi. In that in fig. In the case shown in 6, the impeller and the sealing ring are provided with wings or recesses placed outside the seal itself. Fig. 7 shows bottomed grooves formed in the sealing ring and impeller. Fig. 8 shows part of the cutting gap when the tear grooves are inclined to make the cutting effect more effective. Fig. 9 shows a similar view as fig. 8 when the rake openings are triangular. Fig. 10 shows a section through the impeller and the sealing ring when the tearing means are constituted by radially inclined recesses. In the embodiment according to fig. 11, the cutting edges are provided by inclined holes in the sealing ring, which are distributed along the ring's periphery.
Utover de på tegningene viste former av riveorganene kan man naturligvis tenke seg flere andre hensiktsmessige utformninger. I tilfelle pumpen eller tilsvarende f.eks. har to tetningsringer, slik som i figur 1, kan man naturligvis utforme riveorgan av forskjellig type i de adskilte tetningsspalter. I samme tetningsring resp. løpehjul kan naturligvis også anvendes organ av forskjellig form for å tilveiebringe en mere mangesidig virkning. Generelt kan konstateres at riveorganenes form velges i overens-stemmelse med anvendelsesformålet, og oppfinnelsen omfatter samt-lige utførelser som faller innenfor rammen av foran beskrevne oppfinnelsestanke. In addition to the shapes of the tearing means shown in the drawings, one can of course think of several other suitable designs. In the event that the pump or similar e.g. has two sealing rings, as in figure 1, one can of course design tearing means of different types in the separated sealing gaps. In the same sealing ring or Impellers can of course also be used as organs of different shapes to provide a more versatile effect. In general, it can be stated that the shape of the tearing means is chosen in accordance with the purpose of use, and the invention includes all embodiments that fall within the framework of the inventive idea described above.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI137572A FI49345C (en) | 1972-05-15 | 1972-05-15 | Device for preventing clogging of the sealing gap, especially in a sewage pump or the like. |
Publications (2)
Publication Number | Publication Date |
---|---|
NO138296B true NO138296B (en) | 1978-05-02 |
NO138296C NO138296C (en) | 1978-08-09 |
Family
ID=8505526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO193673A NO138296C (en) | 1972-05-15 | 1973-05-10 | WASTEWATER PUMP. |
Country Status (7)
Country | Link |
---|---|
DE (1) | DE2322772C3 (en) |
DK (1) | DK133395B (en) |
FI (1) | FI49345C (en) |
FR (1) | FR2185275A5 (en) |
GB (1) | GB1431189A (en) |
NO (1) | NO138296C (en) |
SE (1) | SE391008B (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2612910A1 (en) * | 1976-03-26 | 1977-09-29 | Albert Blum | SEWAGE PUMP |
JPS5269002A (en) * | 1975-12-04 | 1977-06-08 | Kubota Ltd | Pump |
DE3124309A1 (en) * | 1981-06-20 | 1983-01-20 | Albert 5204 Lohmar Blum | "PUMP UNIT" |
FI69683C (en) * | 1982-02-08 | 1986-03-10 | Ahlstroem Oy | CENTRIFUGALPUMP FOER VAETSKOR INNEHAOLLANDE FASTA AEMNEN |
FI73796C (en) * | 1984-06-06 | 1987-11-09 | Sarlin Ab Oy E | Eccentric pair at the impeller in a pump. |
SE466766B (en) * | 1989-04-27 | 1992-03-30 | Flygt Ab Itt | Centrifugal pump intended for pumping of liquids containing solid particles, for example, rags and other long-stretched objects |
CN1054418C (en) * | 1993-09-25 | 2000-07-12 | Ksb股份公司 | Turbo-machine with reduced attrition |
DE4431947A1 (en) * | 1993-09-25 | 1995-03-30 | Klein Schanzlin & Becker Ag | Fluid flow engine for particle containing medium - has wall surfaces formed to direct medium flow in regions of higher rotary fluid flow |
DE4338931C2 (en) * | 1993-11-15 | 1996-09-05 | Wilo Gmbh | Non-clogging centrifugal pump |
WO2006064691A1 (en) | 2004-12-13 | 2006-06-22 | Hitachi Metals, Ltd. | High frequency circuit, high frequency circuit components and communication apparatus using the same |
DE102007001383A1 (en) * | 2007-01-09 | 2008-07-10 | Siemens Ag | Centrifugal pump with a rotatably mounted in a housing impeller |
EP2348220B1 (en) * | 2009-12-30 | 2015-07-08 | Grundfos Management A/S | Immersion pump |
SE536067C2 (en) | 2011-10-06 | 2013-04-23 | Xylem Ip Holdings Llc | Pump for pumping liquid containing solids |
CN103603823B (en) * | 2013-11-15 | 2016-01-13 | 广东技术师范学院 | A kind of support transmission device of slurry pump impeller |
CN104791284A (en) * | 2014-01-20 | 2015-07-22 | 江苏大学 | Cutting anti-blocking device for enclosed impeller ring of sewage pump |
WO2016008008A1 (en) * | 2014-07-16 | 2016-01-21 | Sykes Group Pty Ltd | Cutting part for a pump, pump casing and pump |
CN106321510B (en) * | 2016-08-31 | 2020-03-06 | 泛仕达机电股份有限公司 | Backward centrifugal impeller |
CN111550433A (en) * | 2020-05-15 | 2020-08-18 | 江苏大学 | Sealing ring with guide vanes in centrifugal pump |
-
1972
- 1972-05-15 FI FI137572A patent/FI49345C/en active
-
1973
- 1973-05-05 DE DE19732322772 patent/DE2322772C3/en not_active Expired
- 1973-05-09 SE SE7306542A patent/SE391008B/en unknown
- 1973-05-10 NO NO193673A patent/NO138296C/en unknown
- 1973-05-10 DK DK260173A patent/DK133395B/en unknown
- 1973-05-11 GB GB2260473A patent/GB1431189A/en not_active Expired
- 1973-05-14 FR FR7317306A patent/FR2185275A5/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2322772C3 (en) | 1975-09-04 |
DE2322772A1 (en) | 1973-11-29 |
DK133395C (en) | 1976-10-04 |
FI49345B (en) | 1975-01-31 |
GB1431189A (en) | 1976-04-07 |
NO138296C (en) | 1978-08-09 |
FR2185275A5 (en) | 1973-12-28 |
DK133395B (en) | 1976-05-10 |
DE2322772B2 (en) | 1975-01-16 |
SE391008B (en) | 1977-01-31 |
FI49345C (en) | 1975-05-12 |
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