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 PDFInfo
- 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- Withdrawn
Links
Images
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)
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)
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)
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, 49716 Meppen | 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 |
-
2009
- 2009-11-06 IT IT000173U patent/ITRM20090173U1/it unknown
-
2010
- 2010-10-29 EP EP10425344A patent/EP2320087A1/fr not_active Withdrawn
Patent Citations (4)
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, 49716 Meppen | 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)
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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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20111112 |