EP0833056A2 - Procédé pour le positionnement d'arbre et pompe à engrenages - Google Patents

Procédé pour le positionnement d'arbre et pompe à engrenages Download PDF

Info

Publication number: EP0833056A2
Authority: EP; European Patent Office
Prior art keywords: gears; housing; gear pump; gear; areas
Prior art date: 1997-12-23
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

Application number

EP97122713A

Other languages

German (de)

English (en)

Other versions

EP0833056B1 (fr

EP0833056A3 (fr

Inventor

Peter Blume

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.)

Maag Pump Systems AG

Original Assignee

Maag Pump Systems AG

Maag Pump Systems Textron AG

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.)

1997-12-23

Filing date

1997-12-23

Publication date

1998-04-01

1997-12-23 Application filed by Maag Pump Systems AG, Maag Pump Systems Textron AG filed Critical Maag Pump Systems AG

1997-12-23 Priority to DE59711969T priority Critical patent/DE59711969D1/de

1997-12-23 Priority to EP19970122713 priority patent/EP0833056B1/fr

1998-04-01 Publication of EP0833056A2 publication Critical patent/EP0833056A2/fr

1998-07-15 Publication of EP0833056A3 publication Critical patent/EP0833056A3/fr

2004-09-29 Application granted granted Critical

2004-09-29 Publication of EP0833056B1 publication Critical patent/EP0833056B1/fr

2017-12-23 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims description 5
239000000463 material Substances 0.000 claims abstract description 8
238000003860 storage Methods 0.000 claims description 5
239000007788 liquid Substances 0.000 claims 1
239000011248 coating agent Substances 0.000 abstract description 2
238000000576 coating method Methods 0.000 abstract description 2
239000012530 fluid Substances 0.000 description 4
239000008186 active pharmaceutical agent Substances 0.000 description 2
238000005461 lubrication Methods 0.000 description 2
238000010276 construction Methods 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
238000009826 distribution Methods 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
239000011241 protective layer Substances 0.000 description 1

Images

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
- 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
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/086—Carter
- 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
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels

Definitions

the present invention relates to a method according to the Preamble of claim 1 and a gear pump according to the preamble of claim 3.
Gear pumps of the simplest design consist of one pair equally large, interlocking gears that be enclosed on all sides by a housing.
the Gears sit on two shafts mounted in the housing, of which - again in the simplest design - one as Drive shaft led outwards through a shaft seal is.
the housing has on both sides of the Gear engagement one opening for entry and exit of the medium.
Gear pumps provide tried and tested pressure build-up units high volumetric efficiency. Correspondingly large are therefore also on the gears and thus on the forces acting on the gearwheels acting in known manner from corresponding plain bearings Need to become.
the plain bearings are separated from the medium flows through and thus lubricated. According to storage theory comes there is a floating of the waves in the camp when the Operating conditions are chosen correctly, with which the Storage load and bearing capacity are in balance.
a known gear pump is for example in the Document EP-0 753 678.
gear pumps has the Disadvantage on that these gear pumps from the rheological and thermal limit values of the medium are dependent, i.e. gear pumps due to the Pumped medium must be designed.
the present invention is therefore based on the object based on specifying a method or a gear pump, in which the disadvantages mentioned above do not occur.
the invention has the following advantages: By the radial positioning of the gears over tooth heads and Inside of the housing holes is made a decoupling of the operating conditions from the Fluid properties achieved, at least one any remaining dependency of the Operating conditions of the flow behavior of the medium low. Accordingly, the manufacturing cost of Gear pump according to the invention can be significantly reduced.
Fig. 1 shows as parts of a known gear pump Plain bearing GL with a bearing bore LB in which a shaft W is mounted, the shaft W carries a gear Z, the engages in a second gear (not shown).
the pumped medium on the seal side exits the plain bearing GL and to use or dispose of otherwise.
Fig. 2 shows a gear pump according to the invention, the a housing G, a housing cover D and two interlocking gears Z1 and Z2, with
the first gear Z1 on a shaft AW installed or forms a pump component with it.
the shaft AW and thus the gear Z1 are with the help a motor (not shown) driven.
the second gear Z2 by the first driven.
the first Z1 and the second gear Z2 each are powered by a separate motor.
Fig. 3 is a gear pump with one three-part pump housing shown, which is the Housing G accommodating gears Z1 and Z2 on each end is provided with a lid D1 or D2.
FIG. 4 shows a partial cross section according to FIG Section plane A-A through that shown in Fig. 2 Gear pump according to the invention.
Inlet and outlet openings EO and AO for the Fluid FM the gears Z1 and Z2 with their ZK tooth tips and partially the housing G Gear pump according to the invention can be seen.
Due the force distribution in the steady operating state of the Gear pump is one especially in load ranges LB.
Adequate lubrication is required as these Load ranges LB corresponding forces from the housing G must be included.
an entry and a Outlet bore for the medium FM are provided, which are substantially perpendicular to the longitudinal axes of the Gears Z1 and Z2 stand.
Conceivable and also advantageous compared to the variant mentioned above is a Embodiment in which two or more entry and / or Outlet openings for the medium FM are provided, because in such an embodiment there is Possibility that the tooth heads ZK also in the area of Support inlet and outlet openings.
This Embodiment has the particular advantage that the edges of the inlet opening are relieved.
the entry and / or exit opening or the associated inlet and outlet bore run essentially in this embodiment parallel to the gear axles.
FIGS. 5A and 5B a gear wheel is excerpted 5A, a known - provided that that slide bearings are provided for the shafts - and Fig. 5B shows an embodiment according to the invention in a section Show perpendicular to the gear axis MA.
Fig. 5B shows an embodiment according to the invention in a section Show perpendicular to the gear axis MA.
As is well known become conventional bearings in conventional gear pumps used to hold the gears in place. This takes place in the gear pumps according to the invention Position as mentioned by the tooth heads ZK slide on the inside of the housing bore.
Tooth width KD to increase the sliding surface per Tooth tip can be increased.
Figure 5B Correspondingly trained in this way Gear pumps with a higher required pressure difference insert between suction and pressure side. Will also be used for the tooth heads ZK or by positioning claimed housing parts used a material that is extremely resilient trained gear pumps by a large Area of application.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Rotary Pumps (AREA)
Details And Applications Of Rotary Liquid Pumps (AREA)

EP19970122713 1997-12-23 1997-12-23 Procédé pour le positionnement d'arbre et pompe à engrenages Expired - Lifetime EP0833056B1 (fr)

Priority Applications (2)

Application Number	Priority Date	Filing Date	Title
DE59711969T DE59711969D1 (de)	1997-12-23	1997-12-23	Verfahren zur Wellenpositionierung und eine Zahnradpumpe
EP19970122713 EP0833056B1 (fr)	1997-12-23	1997-12-23	Procédé pour le positionnement d'arbre et pompe à engrenages

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP19970122713 EP0833056B1 (fr)	1997-12-23	1997-12-23	Procédé pour le positionnement d'arbre et pompe à engrenages

Publications (3)

Publication Number	Publication Date
EP0833056A2 true EP0833056A2 (fr)	1998-04-01
EP0833056A3 EP0833056A3 (fr)	1998-07-15
EP0833056B1 EP0833056B1 (fr)	2004-09-29

Family

ID=8227861

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19970122713 Expired - Lifetime EP0833056B1 (fr)	1997-12-23	1997-12-23	Procédé pour le positionnement d'arbre et pompe à engrenages

Country Status (2)

Country	Link
EP (1)	EP0833056B1 (fr)
DE (1)	DE59711969D1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0753678A2 (fr)	1996-07-17	1997-01-15	Maag Pump Systems AG	Palier à contact lisse pour un arbre

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE323573C (de) *	1918-04-23	1920-07-31	Fried Krupp Akt Ges	Zahnradpumpe fuer hohe Drehzahlen
US2626570A (en) *	1947-06-13	1953-01-27	Euclid Road Machinery Co	Floating gear pump
US3286643A (en) *	1963-10-14	1966-11-22	Dowty Technical Dev Ltd	Gear pumps and motors
FR2163935A5 (fr) *	1971-12-07	1973-07-27	Rhone Poulenc Sa
US4386893A (en) *	1981-05-04	1983-06-07	Deere & Company	Gear pump or motor with a shaftless gear
DE3312868C2 (de) *	1983-04-09	1986-03-20	Glyco-Antriebstechnik Gmbh, 6200 Wiesbaden	Hydropumpe

1997
- 1997-12-23 DE DE59711969T patent/DE59711969D1/de not_active Expired - Fee Related
- 1997-12-23 EP EP19970122713 patent/EP0833056B1/fr not_active Expired - Lifetime

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0753678A2 (fr)	1996-07-17	1997-01-15	Maag Pump Systems AG	Palier à contact lisse pour un arbre

Also Published As

Publication number	Publication date
EP0833056B1 (fr)	2004-09-29
DE59711969D1 (de)	2004-11-04
EP0833056A3 (fr)	1998-07-15

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1998-02-13	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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2001-08-22	17Q	First examination report despatched	Effective date: 20010706
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