WO2003054393A1 - Förderpumpe - Google Patents
Förderpumpe Download PDFInfo
- Publication number
- WO2003054393A1 WO2003054393A1 PCT/DE2002/003214 DE0203214W WO03054393A1 WO 2003054393 A1 WO2003054393 A1 WO 2003054393A1 DE 0203214 W DE0203214 W DE 0203214W WO 03054393 A1 WO03054393 A1 WO 03054393A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pump
- pressure
- connecting channels
- channels
- channel
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0088—Lubrication
- F04C15/0092—Control systems for the circulation of the lubricant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/005—Removing contaminants, deposits or scale from the pump; Cleaning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
Definitions
- the invention relates to a feed pump for conveying fluid media according to the preamble of the main claim.
- Gear pumps or rotary lobe pumps are used to convey the medium in many chemical conveyor systems, the lubrication required for the slide bearings of the pump being carried out by the medium itself.
- the media to be conveyed usually have a high fluidity.
- a pressure P1 prevails on the suction side of the pump, which pressure is lower than the pressure P2 prevailing on the pressure side of the pump, the pressure medium being pressed or sucked over the surfaces of the slide bearings to be lubricated by this pressure difference.
- This actual conveying medium which acts as a lubricant, is released back into the material flow on the suction side of the pump by providing connecting channels with valve devices on the suction side and on the pressure side in front of or behind the actual pump, which connect the storage area of the pump to the production channel.
- valve devices provided are designed as spring-controlled valves which, depending on the prevailing pressure, automatically assign the associated connecting channels close or open.
- valves When processing highly viscous polymer melts, e.g. B. according to JP 05-052 186 A, such valves can not be used. These known, spring-controlled and spring-loaded valves would clog when pumping highly viscous polymer melts and are therefore not functional with these media.
- the invention is based on the object of making it possible to reverse the conveying medium which lubricates the slide bearings, even when using highly viscous polymer melts, while it should also be possible to simultaneously clean the connecting channel when conveying highly viscous polymer melts.
- valve tappets be used instead of spring-loaded valve flaps or multi-way valves, the connecting channels provided in the pump housing being designed as straight-line bores and the valve tappets completely closing these connecting channels, ie arranged in a suction-tight but adjustable manner in these connecting channels.
- the valve tappets are not only adapted to these connecting channels with regard to the diameter of the bores, but also with regard to the length of the bores, ie the valve tappets close the channels over their entire length.
- the valve lifters can be controlled automatically by pressure sensors by measuring the pressure in the production channel upstream and downstream of the pump and using it to control the valve lifters.
- FIG. 1 shows an arrangement in which there is a pressure in the usual way on the suction side of the pump before the actual pump, which is less than that on the Pressure side of the pump behind the pump and in FIG. 2 the arrangement in which this pressure difference
- 1 denotes a pump housing which has pump covers 2 and 2a.
- a displacer body 6, for example a gearwheel, is arranged within the pump housing and is driven by a drive shaft 4 and is mounted with slide bearings 10 and 11.
- the displacer body 6 is arranged in a production channel 7 and thus creates a suction side Si and a pressure side D ⁇ in the production channel 7.
- Production medium which also serves as a lubricating medium, is indicated by the arrows.
- Connection channels 9 and 9a are also provided on the pressure side Dj of the arrangement.
- These connecting channels 8, 8a; 9, 9a in the pump housing 1 are designed as rectilinear bores and, in the exemplary embodiment shown, penetrate the entire height of the pump housing 1.
- plungers 12, 12a and 14, 14a are, for. B. provided in the pump cover 2, 2a, the actuating means are not shown in the drawing for reasons of clarity. 1 there is a pressure P ⁇ on the suction side S ⁇ which is less than the pressure P 2 which prevails on the pressure side Di, so that the medium flowing in the production channel 7 inevitably acts as a lubricant through the slide bearings 10 and 11 is sucked and is returned to the production channel 7 via the connecting channels 8 and 8a.
- a pressure is reversed, that is, on the suction side S 2 there is a lower pressure P than the pressure prevailing on the pressure side D 2 pressure P 2, and have from DIE sem basically bulb controls the plunger 12 and 12a to them assigned connection channels 8 and 8a closed and the plungers 14 and 14a have been opened, so that thereby the connection channels 9 and 9a are opened and now the medium that flows in the production channel 7 via the pump according to the arrows shown by the
- Connection channels 9 and 9a is pressed.
- connection channels 8 and 8a or 9 and 9a assigned to them in their application they simultaneously clean these connection channels when entering the connection channels assigned to them. H. they push the material that may be present in these connecting channels, namely the highly viscous polymer melt, from the connecting channel into the production channel and thereby clean this connecting channel. Apart from the functional switching of the lubricant flow, the connection channels are completely closed at the same time, so that a residue of highly viscous polymer melt is not possible in these channels.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT02762260T ATE292243T1 (de) | 2001-12-12 | 2002-08-31 | Förderpumpe |
US10/485,632 US7018186B2 (en) | 2001-12-12 | 2002-08-31 | Feed pump |
EP02762260A EP1454063B1 (de) | 2001-12-12 | 2002-08-31 | Förderpumpe |
JP2003555078A JP4195862B2 (ja) | 2001-12-12 | 2002-08-31 | 搬送ポンプ |
DE50202671T DE50202671D1 (de) | 2001-12-12 | 2002-08-31 | Förderpumpe |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10161021 | 2001-12-12 | ||
DE10161021.1 | 2001-12-12 | ||
DE10202620.3 | 2002-01-24 | ||
DE10202620A DE10202620C1 (de) | 2001-12-12 | 2002-01-24 | Förderpumpe |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003054393A1 true WO2003054393A1 (de) | 2003-07-03 |
Family
ID=26010759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/003214 WO2003054393A1 (de) | 2001-12-12 | 2002-08-31 | Förderpumpe |
Country Status (5)
Country | Link |
---|---|
US (1) | US7018186B2 (de) |
EP (1) | EP1454063B1 (de) |
JP (1) | JP4195862B2 (de) |
AT (1) | ATE292243T1 (de) |
WO (1) | WO2003054393A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102959245B (zh) * | 2010-07-02 | 2016-01-06 | 欧瑞康纺织有限及两合公司 | 齿轮泵 |
DE102010055830A1 (de) * | 2010-12-23 | 2012-06-28 | Dt Swiss Ag | Fahrwerksteuerung für ein Fahrrad |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB322778A (en) | 1928-07-12 | 1929-12-12 | British Celanese | Improvements in or relating to processes of pumping artificial silk spinning solutions |
FR1223115A (fr) * | 1958-04-30 | 1960-06-15 | Bosch Gmbh Robert | Mécanisme hydraulique à alvéoles et en particulier pompe à engrenages, haute pression |
DE2517484A1 (de) * | 1975-04-19 | 1976-11-04 | Bosch Gmbh Robert | Verdraengermaschine |
JPS6385276A (ja) * | 1986-09-29 | 1988-04-15 | Shimadzu Corp | 歯車ポンプ |
JPH0552186A (ja) | 1991-08-22 | 1993-03-02 | Kobe Steel Ltd | 溶融樹脂用ギヤポンプ |
EP0628725A2 (de) * | 1994-09-05 | 1994-12-14 | Maag Pump Systems AG | Zahnradpumpe |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2613051B2 (ja) * | 1987-05-07 | 1997-05-21 | カヤバ工業株式会社 | ギヤポンプ |
CH684954A5 (de) | 1991-02-27 | 1995-02-15 | Maag Pump Systems Ag | Zahnradpumpe. |
JPH0552185A (ja) * | 1991-08-22 | 1993-03-02 | Kobe Steel Ltd | 溶融樹脂用ギヤポンプ |
US6135741A (en) * | 1998-12-23 | 2000-10-24 | Parker-Hannifin Corporation | Recirculating flow path for gear pump |
-
2002
- 2002-08-31 EP EP02762260A patent/EP1454063B1/de not_active Expired - Lifetime
- 2002-08-31 AT AT02762260T patent/ATE292243T1/de active
- 2002-08-31 WO PCT/DE2002/003214 patent/WO2003054393A1/de active IP Right Grant
- 2002-08-31 JP JP2003555078A patent/JP4195862B2/ja not_active Expired - Fee Related
- 2002-08-31 US US10/485,632 patent/US7018186B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB322778A (en) | 1928-07-12 | 1929-12-12 | British Celanese | Improvements in or relating to processes of pumping artificial silk spinning solutions |
FR1223115A (fr) * | 1958-04-30 | 1960-06-15 | Bosch Gmbh Robert | Mécanisme hydraulique à alvéoles et en particulier pompe à engrenages, haute pression |
DE2517484A1 (de) * | 1975-04-19 | 1976-11-04 | Bosch Gmbh Robert | Verdraengermaschine |
JPS6385276A (ja) * | 1986-09-29 | 1988-04-15 | Shimadzu Corp | 歯車ポンプ |
JPH0552186A (ja) | 1991-08-22 | 1993-03-02 | Kobe Steel Ltd | 溶融樹脂用ギヤポンプ |
EP0628725A2 (de) * | 1994-09-05 | 1994-12-14 | Maag Pump Systems AG | Zahnradpumpe |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 012, no. 315 (M - 735) 26 August 1988 (1988-08-26) * |
Also Published As
Publication number | Publication date |
---|---|
EP1454063A1 (de) | 2004-09-08 |
US20040184939A1 (en) | 2004-09-23 |
EP1454063B1 (de) | 2005-03-30 |
JP2005513341A (ja) | 2005-05-12 |
US7018186B2 (en) | 2006-03-28 |
JP4195862B2 (ja) | 2008-12-17 |
ATE292243T1 (de) | 2005-04-15 |
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