EP1479919A2 - Konvertierbare Förderpumpe - Google Patents
Konvertierbare Förderpumpe Download PDFInfo
- Publication number
- EP1479919A2 EP1479919A2 EP04010771A EP04010771A EP1479919A2 EP 1479919 A2 EP1479919 A2 EP 1479919A2 EP 04010771 A EP04010771 A EP 04010771A EP 04010771 A EP04010771 A EP 04010771A EP 1479919 A2 EP1479919 A2 EP 1479919A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- rotary
- conduit
- diffuser
- air
- 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.)
- Granted
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
- F04D31/00—Pumping liquids and elastic fluids at the same time
-
- 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
- F04D13/12—Combinations of two or more pumps
Definitions
- the present invention refers to apparatuses used to blow gases under pressure into a food-grade liquid during a clarification process.
- reference will be made to must in the following description as a non-limiting example of a food-grade liquid to be clarified.
- a pump capable of ensuring a head of at least 3 kg/cm 2 preferably a pump comprised of two or more stages in series, and provided with a convergent diffuser on the intake conduit thereof, enables the air - required to ensure the clarification by flotation of the liquid mixture of must and thickening and absorbing materials - to be taken in directly from the surrounding ambient in an adequate amount by connecting a point situated between the diffuser and the pump body with the outside air.
- a transfer pump having a pump body 2, two or more horizontal-axis centrifugal impellers in series (not shown) and a drive motor 4, which are all mounted on a platform 6 provided with wheels 12 for permitting a displacement of the pump, a base 14 for resting on the ground, as well as a handlebar 16 (see in particular Figure 2).
- a transfer pump is shown having a pump body 2, two or more horizontal-axis centrifugal impellers in series (not shown) and a drive motor 4, which are all mounted on a platform 6 provided with wheels 12 for permitting a displacement of the pump, a base 14 for resting on the ground, as well as a handlebar 16 (see in particular Figure 2).
- a transfer pump is shown having a pump body 2, two or more horizontal-axis centrifugal impellers in series (not shown) and a drive motor 4, which are all mounted on a platform 6 provided with wheels 12 for permitting a displacement of the pump, a base 14 for resting on the ground, as well as a handlebar 16 (
- a pressure gauge 50 and an adjustable valve 52, the purpose of which is to ensure that the delivery head of the pump is kept at a value of at least 3 kg/cm 2 that is considered as being absolutely necessary in view of achieving the desired effect.
- the transfer pump can be advantageously used for the clarification of the must by first of all providing for a frusto-conical diffuser 30, i.e. a convergent diffuser, to be inserted upstream of the pump body 2.
- a frusto-conical diffuser 30, i.e. a convergent diffuser to be inserted upstream of the pump body 2.
- the cross-section area of the inlet section 32 i.e. the section facing the filter block 24
- the convergent diffuser may be inserted between a first branch 26 of the intake conduit 20, downstream of the filter block 24, and a second branch 28 thereof.
- a conduit 42 is provided to suck air from the surrounding ambient into the intake conduit 20.
- the air conduit 42 ends at a point 40 of the intake conduit 20 which is situated beyond the outlet section 34 of the diffuser 30 and, anyway, upstream of the pump body 2 and, more specifically, in said second branch 28 of the conduit 20 through which the liquid being treated is caused to flow.
- an air filtration unit 44 along the air conduit 42 there are successively inserted, starting from the outside (i.e. from the zone that is in communication with the surrounding ambient, which, by definition, lies at atmospheric pressure), an air filtration unit 44, a flowmeter 46 (wherein the term flowmeter is intended to mean any volume measuring and/or flow-rate transmitting instrument), and an one-way valve 48 that is intended to prevent any must from leaking into the surrounding ambient in the case that the pump impellers suddenly stop rotating and get stalled.
- the negative pressure brought about by the convergent diffuser 30 in the flow of must causes the air that is needed for carrying out the clarification-by-flotation process to be sucked from the surrounding ambient in an adequate amount.
- the high head (at least 3 kg/cm 2 ) of the pump is in turn effective in avoiding undesired cavitation effects.
- the same pump can of course be used to also perform as a conventional pump for the transfer of the must.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000077A ITTV20030077A1 (it) | 2003-05-20 | 2003-05-20 | Pompa di travaso convertibile. |
ITTV20030077 | 2003-05-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1479919A2 true EP1479919A2 (de) | 2004-11-24 |
EP1479919A3 EP1479919A3 (de) | 2004-12-08 |
EP1479919B1 EP1479919B1 (de) | 2006-04-05 |
Family
ID=33042736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04010771A Expired - Lifetime EP1479919B1 (de) | 2003-05-20 | 2004-05-06 | Konvertierbare Förderpumpe |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1479919B1 (de) |
AT (1) | ATE322620T1 (de) |
DE (1) | DE602004000585D1 (de) |
IT (1) | ITTV20030077A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH237063A (de) * | 1942-02-14 | 1945-03-31 | Aschaffenburger Zellstoffwerke | Verfahren und Anlage zum gleichzeitigen Ansaugen und Fördern von Luft und Wasser mit einer Kreiselpumpe. |
US3689237A (en) * | 1970-02-19 | 1972-09-05 | North American Utility Constru | Fuel gas pipeline system |
US4641679A (en) * | 1983-12-30 | 1987-02-10 | Institute Francais Du Petrole | Feed device for a two-phase fluid pump and a hydrocarbon producing installation with such feed device |
-
2003
- 2003-05-20 IT IT000077A patent/ITTV20030077A1/it unknown
-
2004
- 2004-05-06 EP EP04010771A patent/EP1479919B1/de not_active Expired - Lifetime
- 2004-05-06 AT AT04010771T patent/ATE322620T1/de not_active IP Right Cessation
- 2004-05-06 DE DE602004000585T patent/DE602004000585D1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH237063A (de) * | 1942-02-14 | 1945-03-31 | Aschaffenburger Zellstoffwerke | Verfahren und Anlage zum gleichzeitigen Ansaugen und Fördern von Luft und Wasser mit einer Kreiselpumpe. |
US3689237A (en) * | 1970-02-19 | 1972-09-05 | North American Utility Constru | Fuel gas pipeline system |
US4641679A (en) * | 1983-12-30 | 1987-02-10 | Institute Francais Du Petrole | Feed device for a two-phase fluid pump and a hydrocarbon producing installation with such feed device |
Also Published As
Publication number | Publication date |
---|---|
EP1479919A3 (de) | 2004-12-08 |
EP1479919B1 (de) | 2006-04-05 |
ITTV20030077A1 (it) | 2004-11-21 |
ATE322620T1 (de) | 2006-04-15 |
DE602004000585D1 (de) | 2006-05-18 |
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