SE501194C2 - Device for reducing the risk of clogging of pumps for wastewater and other liquids containing solid pollutants - Google Patents

Device for reducing the risk of clogging of pumps for wastewater and other liquids containing solid pollutants

Info

Publication number
SE501194C2
SE501194C2 SE9301403A SE9301403A SE501194C2 SE 501194 C2 SE501194 C2 SE 501194C2 SE 9301403 A SE9301403 A SE 9301403A SE 9301403 A SE9301403 A SE 9301403A SE 501194 C2 SE501194 C2 SE 501194C2
Authority
SE
Sweden
Prior art keywords
pump
pumps
clogging
risk
reducing
Prior art date
Application number
SE9301403A
Other languages
Swedish (sv)
Other versions
SE9301403D0 (en
SE9301403L (en
Inventor
Goeran Bjoerkander
Peter Staahl
Original Assignee
Flygt Ab Itt
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 Flygt Ab Itt filed Critical Flygt Ab Itt
Priority to SE9301403A priority Critical patent/SE501194C2/en
Publication of SE9301403D0 publication Critical patent/SE9301403D0/en
Priority to EP94850060A priority patent/EP0639716A1/en
Priority to NO941513A priority patent/NO941513L/en
Publication of SE9301403L publication Critical patent/SE9301403L/en
Publication of SE501194C2 publication Critical patent/SE501194C2/en

Links

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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0072—Installation or systems with two or more pumps, wherein the flow path through the stages can be changed, e.g. series-parallel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

The invention concerns a device for pump stations comprising two or more pump units (4), (5). The pressure pipes (8), (9) from the pump units are connected via a shunt lead (10) which is kept open during short intervals at pump starts, thus obtaining a backward flow through the pump(s) which not operate at the moment, thereby flashing out pollutions through the inlet(s) of said pump(s). <IMAGE>

Description

501 194 z shuntledning med ett ventilarrangemang 11. 12 och 13 slutligen be- tecknar backventiler. 501 194 z shunt line with a valve arrangement 11. 12 and 13 finally denote non-return valves.

Anordningen enligt uppfinningen fungerar på följande sätt: Då vattennivån i pumpstationen 1 stigit så mycket att utpumpning skall börja, utloppet 3. Under det första skedet av pumpningen, exempelvis några Detta betyder att en del av det pumpade vattnet strömmar genom shuntledningen, nedåt startas en av pumparna 4 för transport av vattnet till sekunder, är ventilen ll i shuntledningen öppen. genom tryckröret 9, och baklänges genom pumpen 5 ut genom dennas inlopp 7. Strömningen är mycket kraftig, varför trasor etc som kan ha fastnat i pumpen 5, kommer att spolas ut. därvid pumphjulet baklänges, så att föremål som lindats upp på detta kommer att lindas av vilket underlättar rengöringen. Efter en förut- Strömningen driver bestämd tid eller efter det att en viss mängd vatten passerat ventil- arrangemanget ll, stängs detta och utpumpningen fortsätter på vanligt sätt. Backventiler 12, respektive 13 förhindrar oavsiktlig återström- ning.The device according to the invention works as follows: When the water level in the pump station 1 has risen so much that pumping is to start, the outlet 3. During the first stage of the pumping, for example some This means that part of the pumped water flows through the shunt line, down one of pumps 4 for transporting the water to seconds, the valve ll in the shunt line is open. through the pressure pipe 9, and backwards through the pump 5 out through its inlet 7. The flow is very strong, so that rags etc. which may have got stuck in the pump 5, will be flushed out. the impeller is reversed, so that objects wound on it will be wound, which facilitates cleaning. After a pre-flow for a certain time or after a certain amount of water has passed the valve arrangement 11, this is closed and the pumping continues in the usual way. Check valves 12 and 13, respectively, prevent unintentional backflow.

Om vattentillströmningen är sådan att även pumpen 5 behöver starta, sker detta på vanligt sätt. Någon återspolning genom den andra pumpen 4, sker dock inte nu. Däremot sker alltid återspolning så snart den första pumpen startar efter det att båda stått stilla. För att säker- ställa renspolning av båda pumparna alterneras startordningen. såsom tidigare nämnts, styras på olika sätt, ma- flödesmängd etc. Det ligger även inom uppfinningstanken att tre eller flera pumpaggregat Ventilen ll kan, nuellt eller automatiskt i beroende av tid, i samma eller närliggande pumpstationer kan förses med shuntledningar på ovan beskrivet sätt.If the water inflow is such that the pump 5 also needs to start, this is done in the usual way. However, no rewinding through the second pump 4 takes place now. However, rewinding always takes place as soon as the first pump starts after both have stopped. To ensure flushing of both pumps, the starting order is alternated. as previously mentioned, controlled in different ways, amount of maflow flow, etc. It is also within the inventive idea that three or more pump units The valve ll can, now or automatically depending on time, in the same or nearby pump stations can be provided with shunt lines in the manner described above.

Claims (3)

1. 3 501 194 PATENTKRAV l Anordning för att minska risken för igensättning av hydraul- delarna i pumpar anordnade i en pumpstation innehållande minst två pumpaggregat (4), (5), k ä n n e t e c k n a d därav, att den innefattar en shuntledning (10) mellan pum- parnas (4), (5) utloppsrör (8), (9), varvid shuntledningen är försedd med ett ventilarrangemang (11), som kan hålla den öppen en viss tid då någon av pumparna startar och minst en av de andra ej arbetar, varigenom en del av strömningen frán den pump (4) som arbetar spolas baklänges genom den pump (5) som ej arbetar och därvid spolar ut eventuella föroreningar i dennas hydrauldel genom dess inlopp (7).Claim 1 Device for reducing the risk of clogging of the hydraulic parts in pumps arranged in a pumping station containing at least two pump assemblies (4), (5), characterized in that it comprises a shunt line (10) between the outlet pipes (8), (9) of the pumps (4), (5), the shunt line being provided with a valve arrangement (11), which can keep it open for a certain time when one of the pumps starts and at least one of the others does not works, whereby a part of the flow from the pump (4) which is working is flushed backwards through the pump (5) which is not working and thereby flushes out any contaminants in its hydraulic part through its inlet (7). 2. Anordning enligt krav l, k ä n n e t e c k n a d därav, att regler- eller styrorganet utgörs av en tidstyrd elekt- riskt manövrerad ventil (ll).2. Device according to claim 1, characterized in that the control or control means consists of a time-controlled electrically operated valve (II). 3. Anordning enligt krav l, k ä n n e t e c k n a d därav, att regler- eller styrorganet utgörs av flödet styrd ventil (ll).Device according to claim 1, characterized in that the control or control means consists of the flow-controlled valve (ll).
SE9301403A 1993-04-27 1993-04-27 Device for reducing the risk of clogging of pumps for wastewater and other liquids containing solid pollutants SE501194C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9301403A SE501194C2 (en) 1993-04-27 1993-04-27 Device for reducing the risk of clogging of pumps for wastewater and other liquids containing solid pollutants
EP94850060A EP0639716A1 (en) 1993-04-27 1994-04-20 Device for sewage pumping stations
NO941513A NO941513L (en) 1993-04-27 1994-04-26 Device for reducing the risk of clogging of pumps for effluent and other liquids containing solid contaminants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9301403A SE501194C2 (en) 1993-04-27 1993-04-27 Device for reducing the risk of clogging of pumps for wastewater and other liquids containing solid pollutants

Publications (3)

Publication Number Publication Date
SE9301403D0 SE9301403D0 (en) 1993-04-27
SE9301403L SE9301403L (en) 1994-10-28
SE501194C2 true SE501194C2 (en) 1994-12-05

Family

ID=20389720

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9301403A SE501194C2 (en) 1993-04-27 1993-04-27 Device for reducing the risk of clogging of pumps for wastewater and other liquids containing solid pollutants

Country Status (3)

Country Link
EP (1) EP0639716A1 (en)
NO (1) NO941513L (en)
SE (1) SE501194C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CL2012001067A1 (en) * 2012-04-26 2012-06-22 Rocco Abbruzzese Permutt Gino Cleaning system for submersible motor pumps with suction jackets, made up of a series of valves and sensors, which allow the entry of pressurized water, the injection and soaking of cleaning chemical compounds, the exit of water, with sediments and adhered impurities; and cleaning procedure.
GB201513484D0 (en) * 2015-07-30 2015-09-16 Ihc Engineering Business Ltd Underwater trenching apparatus and pumping apparatus
CN111706527B (en) * 2020-05-08 2021-08-17 湖南都市职业学院 Automatic separation system for shallow geothermal energy underground water and slurry

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1415769A (en) * 1922-02-17 1922-05-09 Beddoes Hubert Pumping system
US2238597A (en) * 1939-08-24 1941-04-15 Chicago Pump Co Pumping apparatus
JPS5746086A (en) * 1980-09-03 1982-03-16 Hitachi Ltd Operation of sewage pump

Also Published As

Publication number Publication date
SE9301403D0 (en) 1993-04-27
NO941513D0 (en) 1994-04-26
SE9301403L (en) 1994-10-28
NO941513L (en) 1994-10-28
EP0639716A1 (en) 1995-02-22

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