EP2320087A1 - Corps de pompe pour pompes centrifuges à roue ouverte installées dans une position longitudinale et dotées d'un tuyau d'aération - Google Patents

Corps de pompe pour pompes centrifuges à roue ouverte installées dans une position longitudinale et dotées d'un tuyau d'aération Download PDF

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Publication number
EP2320087A1
EP2320087A1 EP10425344A EP10425344A EP2320087A1 EP 2320087 A1 EP2320087 A1 EP 2320087A1 EP 10425344 A EP10425344 A EP 10425344A EP 10425344 A EP10425344 A EP 10425344A EP 2320087 A1 EP2320087 A1 EP 2320087A1
Authority
EP
European Patent Office
Prior art keywords
pump body
air vent
vent pipe
fitted
longitudinal position
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Withdrawn
Application number
EP10425344A
Other languages
German (de)
English (en)
Inventor
Marco Giovannini
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.)
Planus SpA
Original Assignee
Planus SpA
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 Planus SpA filed Critical Planus SpA
Publication of EP2320087A1 publication Critical patent/EP2320087A1/fr
Withdrawn legal-status Critical Current

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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
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/004—Priming of not self-priming pumps
    • F04D9/006—Priming of not self-priming pumps by venting gas or using gas valves
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/10—Waste-disintegrating apparatus combined with the bowl
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted 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
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/26—Object-catching inserts or similar devices for waste pipes or outlets
    • E03C1/266—Arrangement of disintegrating apparatus in waste pipes or outlets; Disintegrating apparatus specially adapted for installation in waste pipes or outlets
    • E03C1/2665—Disintegrating apparatus specially adapted for installation in waste pipes or outlets

Definitions

  • Open impeller centrifugal pumps - i.e. pumps that, thanks to the open impeller design, enable the pumping of liquids that contain suspended solid materials - used in connection with the discharging of grey and black waters and the simultaneous grinding of organic materials, exploit their high rotation speed, and resulting large flow rate, to create a depression in the suction pipe, which rapidly draws into the pump the wastewater discharged by a toilet or a grey/black water collection tank.
  • the air trapped inside the pump body therefore, must be removed before the pump is switched on, so that it can be suitably primed, i.e. filled with liquid before being used.
  • the pump's longitudinal position determines the fact that the air trapped inside the pump body can only be partially removed through the suction pipe, which is normally connected in a barycentric position to the pump, as a result of which the air trapped inside the pump above the inlet point has no way out.
  • the pump operates in a condition of partial cavitation, due to the presence, inside the pump body, of a certain amount of air that has not been removed from the aforesaid pump body.
  • the invention is an open impeller centrifugal pump body, installed in a longitudinal position, the top of which is fitted with an air vent pipe - vertically to the suction pipe - capable of ensuring the complete removal of the air trapped inside the pump body and the consequent solution of the problems mentioned above.
  • the pump body features one or more air vent pipes, fitted to the top of the pump body and, in any case, above the suction pipe; the air vent pipe is directed to evacuate the air trapped at the top of the pump body and which causes the above mentioned inconveniences.
  • the pump body (1) features at least one air vent pipe (2) fitted at the top of the pump body itself (1), preferably at the top of the pump body (1) and above the suction pipe (3), which conveys the wastewater into the pump.
  • the air vent pipe (2) is fitted to the top of the pump body (1) so that, the pump being installed in the longitudinal position, the quantity of air that has not been evacuated via the suction pipe (3) and which is trapped in the top part of the pump (4) (shaded in fig. 3 ) - thus preventing the proper priming of the pump and the malfunctioning mentioned above - can be effectively removed through the air vent pipe (2), when the pump is not running.
  • the position of the air vent pipe (2) at the top of the pump body is fundamental for effecting the removal of the air, because this is the part of the pump in which the trapped air tends to accumulate and from which it can, therefore, be easily evacuated.
  • the air vent pipe (2) can be fitted in a number of positions, for example above the suction pipe (3) along the vertical axis passing through the centre of the suction pipe (3).
  • more than one air vent pipe (2) can be fitted to the pump body (1), to effect the removal of the trapped air from the pump even faster.
  • the cross-section of the vent should be wide enough to prevent its clogging by any waste materials, to ensure that it remains open even in the heaviest operating conditions.
  • the air vent pipe(s) (2) may discharge the trapped air into the grinder unit, the toilet discharge pipe or toilet bowl, or anywhere else; figures 5 , 6 and 7 feature examples of how the air can be discharged through the air vent pipe (2).
  • Figure 5 shows the cross-section of the pump fitted with the air vent pipe (2) connected to a grinder unit with tank
  • figure 6 is a view of the pump fitted with the air vent pipe (2) applied to a toilet grinder unit connected by means of a coupling to the toilet drain pipe
  • figure 7 shows a cross-section of the pump fitted with an air vent pipe (2) connected to the toilet bowl.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP10425344A 2009-11-06 2010-10-29 Corps de pompe pour pompes centrifuges à roue ouverte installées dans une position longitudinale et dotées d'un tuyau d'aération Withdrawn EP2320087A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000173U ITRM20090173U1 (it) 2009-11-06 2009-11-06 Corpo pompa per pompe centrifughe a girante aperta collocate in posizione longitudinale provvisto di sfiato per l aria

Publications (1)

Publication Number Publication Date
EP2320087A1 true EP2320087A1 (fr) 2011-05-11

Family

ID=43630000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10425344A Withdrawn EP2320087A1 (fr) 2009-11-06 2010-10-29 Corps de pompe pour pompes centrifuges à roue ouverte installées dans une position longitudinale et dotées d'un tuyau d'aération

Country Status (2)

Country Link
EP (1) EP2320087A1 (fr)
IT (1) ITRM20090173U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10267317B2 (en) 2012-06-14 2019-04-23 Flow Control Llc. Technique for preventing air lock through stuttered starting and air release slit for pumps

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147898A (ja) * 1983-02-09 1984-08-24 Matsushita Electric Works Ltd 風呂用循環ポンプのエア抜き構造
DE29514402U1 (de) * 1994-09-10 1995-11-09 Elektra Beckum Ag Vorrichtung zum Verbessern des Ansaugverhaltens von Strömungsförderpumpen
DE19923349A1 (de) * 1998-10-07 2000-04-20 Gardena Kress & Kastner Gmbh Flüssigkeitspumpenanordnung, insbesondere für die Verwendung in Haus und/oder Garten
DE102006016199A1 (de) * 2006-04-06 2007-10-11 Alfa Laval Kolding A/S Selbstentlüftende Zentrifugalpumpe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147898A (ja) * 1983-02-09 1984-08-24 Matsushita Electric Works Ltd 風呂用循環ポンプのエア抜き構造
DE29514402U1 (de) * 1994-09-10 1995-11-09 Elektra Beckum Ag Vorrichtung zum Verbessern des Ansaugverhaltens von Strömungsförderpumpen
DE19923349A1 (de) * 1998-10-07 2000-04-20 Gardena Kress & Kastner Gmbh Flüssigkeitspumpenanordnung, insbesondere für die Verwendung in Haus und/oder Garten
DE102006016199A1 (de) * 2006-04-06 2007-10-11 Alfa Laval Kolding A/S Selbstentlüftende Zentrifugalpumpe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10267317B2 (en) 2012-06-14 2019-04-23 Flow Control Llc. Technique for preventing air lock through stuttered starting and air release slit for pumps
EP2861374B1 (fr) * 2012-06-14 2021-04-14 Flow Control LLC. Technique permettant d'empêcher une poche d'air au moyen d'un démarrage instable et d'une fente de libération d'air pour des pompes

Also Published As

Publication number Publication date
ITRM20090173U1 (it) 2011-05-07

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