EP2216550A2 - Gear wheel pump with shaft seal - Google Patents
Gear wheel pump with shaft seal Download PDFInfo
- Publication number
- EP2216550A2 EP2216550A2 EP10001269A EP10001269A EP2216550A2 EP 2216550 A2 EP2216550 A2 EP 2216550A2 EP 10001269 A EP10001269 A EP 10001269A EP 10001269 A EP10001269 A EP 10001269A EP 2216550 A2 EP2216550 A2 EP 2216550A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- gear
- housing cover
- drive
- shaft
- 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
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 8
- 238000005086 pumping Methods 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000004823 Reactive adhesive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- F04C2/12—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
-
- 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
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
Definitions
- a gear pump with the features of the preamble of claim 1.
- a gear pump is provided with at least two externally meshing gears, which bear with their flat sides directly or indirectly on housing covers of the gear pump.
- At least one drive gear is provided with shaft journal and rotatably connected thereto, wherein the shaft journals are arranged on both sides of the at least one drive gear and rotatably mounted in the respective adjacent housing cover.
- One of the shaft journals of the drive gear is extended and guided as a drive pivot through the adjacent housing cover to the outside.
- a shaft seal is provided for the drive pivot. This acts sealingly between the drive pivot and the housing cover penetrated by it and is on the pump gear wheels facing the inside of the penetrated by the drive pivot pin first Housing cover arranged in a gear-side recess of the housing cover.
- Gear pumps of the type described above are known in their basic principle for decades and are used, inter alia, for driving hydraulic systems in vehicle technology, where high efficiency with simple and cost-effective production and the generation of high pressures in the foreground.
- the construction and the principle of operation of a gear pump is particularly clear in the DE 24 11 492 C2 described.
- the pump is constructed of three plate-shaped housing parts, which is why such pumps are also referred to as "plate pumps". Of the sandwiched plates, the middle takes up the pump chamber with the two pump gears in this case (pump plate). On both sides of the pump plate are at her sealing housing cover, which close the pump chamber in the axial direction (first and second cover plate).
- Such pumps can also be used for problematic pumping liquids, such as adhesives.
- adhesives such as adhesives.
- PUR adhesives reactive adhesives
- a gear or plate pump is also used in the DE 81 01 898 U1 described.
- the pressure effect can be taken from an acting in the axial direction Federkraftbeetzschung the piston or from the hydrostatic pressure of the fluid to be delivered.
- To seal the high pressure side of the piston against the low pressure side sealing rings are provided, which are arranged in a pressure-loaded annular space.
- a disadvantage of such an arrangement is in addition to a high cleaning effort that the front side of the promotional gears are exposed by the action of the pistons heavy wear.
- a contrast easier to clean (metering) gear pump can the US Pat. No. 6,857,860 B1 be removed.
- the seal of the delivery volume relative to the pump housing and with respect to the drive shaft is effected by a sealing ring arranged in a recess of a housing plate, which is pressed against the driving gear, which is non-rotatably connected to the shaft. The pressing is done by spring force.
- the recess receiving the sealing ring is subjected to a pressurized sealing liquid.
- the front side of the driving Gear exposed by the acted upon by mechanical or hydrostatic pressure sealing ring strong mechanical loads, which are a wear reduction of the pump, but in particular of the gear, detrimental.
- a structurally complex gear pump with preferably three gears can the DE 69 24 726 U be removed.
- the conveying gears are driven by a third gear, which is in engagement with the driving gear, wherein the drive takes place on the low pressure side of the delivery volume.
- the arrangement of the drive shaft on the low pressure side of the pump leads to lower demands on the sealing effect of the seal.
- a recess is provided, in which a plate can be used for fixing the gears.
- a suitable for promoting not self-lubricating media gear pump can the DE 19 27 514 U1 be removed.
- the gears do not touch within the pumped volume of the pump, therefore, the gears are driven individually and synchronously.
- the synchronous drive is carried out in a the volume to be delivered upstream gear housing, which is closed to the oil volume to be delivered.
- the seals are arranged so that they are accessible from the volume to be delivered.
- the bearing of the drive shaft is effected by two ball bearings, which are arranged spaced apart in the axial direction in a housing chamber. The chamber is sealed from the volume to be delivered by a packing.
- the invention is based on the problem in a generic pump to extend the life of the shaft seal for the drive pivot, so that a low maintenance is achieved even for problematic fluids to be pumped.
- the recess is provided with an arranged on the side facing the pump chamber prechamber, wherein the prechamber supplies the shaft seal with constantly exchanging fluid to be pumped.
- a further improvement, which also affects the durability of the shaft seal can be achieved by using a bearing bush instead of the fitting gap between the rotary drive pin and the housing cover in question , which absorbs the radial bearing forces and ensures good low-friction bearing and the inner shaft seal better protects against radial loads.
- the bearing bush can be different means for pivot bearing, such as plain bearings or pivot bearings act.
- gear pump is designed as a plate pump, in which both sides of a pump plate 12 first and second plate-shaped housing cover 14A, 14B are sealingly applied to the pump plate 12.
- Two externally meshing pump gears 16A, 16B are arranged in known and intersecting cylindrical openings of the pump plate 12.
- the drive-side pump gear 16 A is rotatably connected to a drive shaft 18. This has (in the drawing on the left) on the drive side a housing cover 14A outwardly projecting drive pivot pin 18A.
- the drive shaft On the drive opposite side of the pump gear 16A, the drive shaft has a shaft journal 18B rotatably supported in a mating bore 32A of the second (rear) housing cover 14B with a small radial gap.
- This bore can be designed as a blind bore or otherwise be sealed against the end face of the pump space.
- the second pump gear 16B meshing with the first pump gear 16A may be radially and axially supported in any desired manner.
- the entry of the pumping fluid takes place for example via a lateral inlet opening 20 of the pump plate 2 approximately in the contact region of the two pump gears.
- the outlet opening is generally diametrically opposite to the inlet opening 20.
- the drive-side rotary mounting of the drive shaft 18 takes place in the embodiment according to FIG. 1 via a bearing bush 22, which is recessed into the first (front) housing cover 14A on the side opposite the pump plate 12. in this connection it may, for example, be a self-lubricating plain bearing or a roller bearing.
- a housing cover recess 24 in which a ring seal as a shaft seal 26 for radial sealing of the drive shaft 18 relative to the pump chamber and the first (front) housing cover 14A is used.
- a towards the pump chamber towards, preferably conically, expanding antechamber 24A of the recess 24 provides the shaft seal 26 with constantly exchanging fluid to be pumped.
- a radial fitting gap is provided between the drive shaft 18 and the first (front) housing cover 14A.
- the drive pivot pin 18A is surrounded by a countershaft 28 with a chamber 28A which is open toward the drive pivot pin 18A and can be acted upon by lubricant via radial bores 28B, 28C.
- a shaft seal 30 seals the chamber 28 A from the outer part of the drive shaft 18 fluidly.
- the second housing cover 14B rests on its outside tightly against a pump plate, wherein the supply and the discharge for fluid to be pumped (not shown) through the second housing cover 14B through.
- the second pump gear 16B is seated with the necessary radial play rotatably on a second shaft 19 which is mounted in the first housing cover 14A in a blind bore and rotatably seated in the second housing cover 14B.
- the shaft journal 18B is rotatable with respect to the second housing cover 14B, wherein the pump chamber 21 located in the pump plate 12 may be sealed by a pump chamber seal 21A against the second housing cover 14B and the shaft journal 18B if necessary.
- the gear wheel side arranged in the first housing cover 14A shaft seal 26 in axial Direction via a support ring 26A supported on the second housing cover 14B.
- FIG. 1 The embodiment shown can be modified in a similar manner as the embodiment of the FIG. 2B in relation to those in FIG. 2A , wherein the bearing bush 22 may also be significantly larger in circumference than in FIG. 1 so that common needle roller bearings can be used as a bearing bushing 22, wherein a housing part receiving the needle roller bearing and the needle roller bearing may be partially extended within the first housing cover 14A and partly outside thereof.
- Bearing bushes 22 used in accordance with the invention can, in particular in one embodiment, also be provided as pump bearings on the pump side or on both sides with additional shaft seals.
- the possible outlines of a bearing bush 22 in the form of a encapsulated by a housing needle roller bearings are in FIG. 1 drawn in dashed form as an alternative.
- the pump gears are arranged on a second shaft 19 and a third shaft 19 '.
- the shafts 19, 19 ' are arranged in cylindrical openings of the pump plates 12 and 12'. Due to the multi-stage design, the delivery volume of the pump according to Fig. 3 relative to the volume of a pump according to the FIGS. 1 . 2A or 2 B be multiplied. For example, according to Fig. 3 about a fourfold or eightfold increase in the delivery volume possible.
- a recess 24 is provided, in which a shaft seal 26 is arranged.
- the recess 24 is provided with an on the pump chamber facing side arranged prechamber 24A.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Die Erfindung betrifft eine Zahnradpumpe mit den Merkmalen des Oberbegriffs des Anspruchs 1. Demnach ist eine Zahnradpumpe vorgesehen mit mindestens zwei im Außeneingriff kämmenden Zahnrädern, die mit ihren Flachseiten direkt oder indirekt an Gehäusedeckeln der Zahnradpumpe anliegen. Zumindest ein Antriebszahnrad ist mit Wellenzapfen versehen und drehfest damit verbunden, wobei die Wellenzapfen beidseitig des mindestens einen Antriebszahnrades angeordnet und in dem jeweils benachbarten Gehäusedeckel drehgelagert sind. Einer der Wellenzapfen des Antriebszahnrades ist verlängert und als Antriebsdrehzapfen durch den benachbarten Gehäusedeckel nach außen geführt. Um das Austreten von zu pumpendem Fluid zu verhindern, ist eine Wellendichtung für den Antriebsdrehzapfen vorgesehen. Diese wirkt abdichtend zwischen dem Antriebsdrehzapfen und dem von ihm durchdrungenen Gehäusedeckel und ist auf der den Pumpenzahnrädern zugewandten Innenseite des von dem Antriebsdrehzapfen durchdrungenen ersten Gehäusedeckels in einer zahnradseitigen Aussparung des Gehäusedeckels angeordnet.The invention relates to a gear pump with the features of the preamble of claim 1. Accordingly, a gear pump is provided with at least two externally meshing gears, which bear with their flat sides directly or indirectly on housing covers of the gear pump. At least one drive gear is provided with shaft journal and rotatably connected thereto, wherein the shaft journals are arranged on both sides of the at least one drive gear and rotatably mounted in the respective adjacent housing cover. One of the shaft journals of the drive gear is extended and guided as a drive pivot through the adjacent housing cover to the outside. To prevent the escape of fluid to be pumped, a shaft seal is provided for the drive pivot. This acts sealingly between the drive pivot and the housing cover penetrated by it and is on the pump gear wheels facing the inside of the penetrated by the drive pivot pin first Housing cover arranged in a gear-side recess of the housing cover.
Zahnradpumpen der vorbeschriebenen Art sind in ihrem Grundprinzip seit Jahrzehnten bekannt und werden unter anderem zum Antreiben hydraulischer Systeme in der Fahrzeugtechnik eingesetzt, wo ein hoher Wirkungsgrad bei einfacher und kostengünstiger Herstellung sowie das Erzeugen hoher Drücke im Vordergrund stehen. Der Aufbau und das Wirkungsprinzip einer Zahnradpumpe ist besonders anschaulich in der
Derartige Pumpen können an sich auch für problematische Pumpflüssigkeiten, wie Klebstoffe verwendet werden. Es hat sich allerdings gezeigt, dass, insbesondere reaktive, Klebstoffe wie z.B. PUR-Klebstoffe zu einem schnellen Altern der Wellendichtung führen.Such pumps can also be used for problematic pumping liquids, such as adhesives. However, it has been found that, especially reactive adhesives such as e.g. PUR adhesives lead to rapid aging of the shaft seal.
Eine Zahnrad- oder Plattenpumpe wird auch in der
Eine demgegenüber einfacher zu reinigende (Dosier-)Zahnradpumpe kann der
Eine konstruktiv aufwändigere Zahnradpumpe mit vorzugsweise drei Zahnrädern kann der
Eine zur Förderung nicht selbst schmierender Medien geeignete Zahnradpumpe kann der
Eine Zahnradpumpe mit einem beweglich auf der Antriebswelle gelagerten ersten Zahnrad, welches mit einem im Gehäuse ohne Welle gelagerten zweiten Zahnrad in Eingriff steht, kann der
Davon ausgehend liegt der Erfindung das Problem zugrunde bei einer gattungsgemäßen Pumpe die Lebensdauer der Wellendichtung für den Antriebsdrehzapfen zu verlängern, so dass eine weitgehende Wartungsarmut auch für problematische zu pumpende Fluide erreicht wird.On this basis, the invention is based on the problem in a generic pump to extend the life of the shaft seal for the drive pivot, so that a low maintenance is achieved even for problematic fluids to be pumped.
Zur Lösung dieser Aufgabe wird eine Zahnradpumpe mit den Merkmalen des Anspruchs 1 vorgeschlagen. Demnach ist vorgesehen, dass die Aussparung mit einer auf der dem Pumpenraum zugewandten Seite angeordneten Vorkammer versehen ist, wobei die Vorkammer die Wellendichtung mit ständig sich austauschendem zu pumpendem Fluid versorgt.To solve this problem, a gear pump with the features of claim 1 is proposed. Accordingly, it is provided that the recess is provided with an arranged on the side facing the pump chamber prechamber, wherein the prechamber supplies the shaft seal with constantly exchanging fluid to be pumped.
Es hat sich überraschender Weise gezeigt, dass verkürzte Lebensdauern der Wellendichtung auch beim Pumpen problematischer Pumpflüssigkeiten nicht mehr auftreten, wenn die Wellendichtung von der Außenseite des betroffenen Gehäusedeckels auf dessen Innenseite in eine Aussparung mit einer Vorkammer verlagert wird. Z.B. treten störende Kristallbildungen, wie sie bei außenliegenden Wellendichtungen beobachtet wurden, bei der Erfindung nicht mehr auf.It has surprisingly been found that shortened lifetimes of the shaft seal no longer occur even when pumping problematic pumping liquids when the shaft seal is displaced from the outside of the affected housing cover on the inside in a recess with a prechamber. For example, disturbing crystal formations, as observed in external shaft seals, no longer occur in the invention.
Wenn die Radiallagerung des Antriebsdrehzapfens wegen nunmehr fehlender Schmierung des Passspaltes zum Gehäusedeckel unzureichend ist, kann eine weitere Verbesserung, die sich auch auf die Haltbarkeit der Wellendichtung auswirkt, dadurch erreicht werden, dass anstelle des Passspaltes zwischen dem Drehantriebszapfen und dem betreffenden Gehäusedeckel eine Lagerbuchse eingesetzt wird, welche die radialen Lagerkräfte aufnimmt und für eine gute reibungsarme Lagerung sorgt und die innen liegende Wellendichtung besser vor radialen Belastungen schützt. Bei der Lagerbuchse kann es sich um unterschiedliche Mittel zu Drehlagerung, wie Gleitlager oder Drehlager, handeln.If the radial bearing of the drive pivot pin is insufficient because of now lack of lubrication of the fitting gap to the housing cover, a further improvement, which also affects the durability of the shaft seal can be achieved by using a bearing bush instead of the fitting gap between the rotary drive pin and the housing cover in question , which absorbs the radial bearing forces and ensures good low-friction bearing and the inner shaft seal better protects against radial loads. In the bearing bush can be different means for pivot bearing, such as plain bearings or pivot bearings act.
Alternativ zu einer solchen Lagerbuchse ist es auch möglich, den außerhalb des betroffenen Gehäusedeckels liegenden Teil des Antriebsdrehzapfens mit einem Vorgelege in Gestalt einer antriebsseitig drehgedichteten Kammer zu versehen. Diese kann bei Bedarf mit einem Fluid zur Schmierung befüllt werden. Trockenlaufprobleme im Passspalt zwischen dem Antriebsdrehzapfen und dem zugehörigen Gehäusedeckel können dadurch völlig ausgeschlossen werden. Unter Umständen wird auch die Lagerung des Antriebsdrehzapfens verbessert.As an alternative to such a bearing bush, it is also possible to provide the outside of the affected housing cover part of the drive pivot pin with a countershaft in the form of a drive side rotary sealed chamber. This can be filled if necessary with a fluid for lubrication. Dry running problems in the fitting gap between the drive pivot and the associated housing cover can be completely excluded. Under certain circumstances, the storage of the drive pivot is improved.
Die vorgenannten sowie die beanspruchten und in den Ausführungsbeispielen beschriebenen erfindungsgemäß zu verwendenden Bauteile unterliegen in ihrer Größe, Formgestaltung, Materialauswahl und technischen Konzeption keinen besonderen Ausnahmebedingungen, so dass die in dem Anwendungsgebiet bekannten Auswahlkriterien uneingeschränkt Anwendung finden könnenThe above-mentioned and the claimed components to be used according to the invention described in the exemplary embodiments are not subject to special conditions of size, shape, material selection and technical design, so that the selection criteria known in the field of application can be used without restriction
Weitere Einzelheiten, Merkmale und Vorteile des Gegenstandes der Erfindung ergeben sich aus den Unteransprüchen, sowie aus der nachfolgenden Beschreibung der zugehörigen Zeichnung und Tabelle, in der - beispielhaft - ein Ausführungsbeispiel einer Zahnradpumpe dargestellt ist. Auch einzelne Merkmale der Ansprüche oder der Ausführungsformen können mit anderen Merkmalen anderer Ansprüche und Ausführungsformen kombiniert werden.Further details, features and advantages of the subject matter of the invention will become apparent from the dependent claims, as well as from the following description of the accompanying drawings and table, in which - by way of example - an embodiment of a gear pump is shown. Also, individual features of the claims or of the embodiments may be combined with other features of other claims and embodiments.
In der Zeichnung zeigen
- Fig. 1
- eine Zahnradpumpe in einer ersten Ausführungsform in Seitenansicht, zum Teil aufgebrochen:
- Fig. 2A
- eine zweite Ausführungsform einer Zahnradpumpe in der gleichen Darstellungsart mit einem Vorgelege,
- Fig. 2B
- von der zweiten Ausführungsform eine andere Bauart in Axialschnitt- ansicht sowie
- Fig. 3
- eine dritte, mehrstufige Ausführungsform einer Zahnradpumpe in Axialschnittansicht.
- Fig. 1
- a gear pump in a first embodiment in side view, partially broken:
- Fig. 2A
- a second embodiment of a gear pump in the same representation with a countershaft,
- Fig. 2B
- from the second embodiment of another type in axial section view and
- Fig. 3
- a third, multi-stage embodiment of a gear pump in axial section view.
Die in
Das mit dem ersten Pumpenzahnrad 16A kämmende zweite Pumpenzahnrad 16B kann in an sich beliebiger Weise radial und axial gelagert sein. Der Eintritt des Pumpfluids erfolgt z.B. über eine seitliche Eintrittsöffnung 20 der Pumpenplatte 2 etwa im Kontaktbereich der beiden Pumpenzahnräder. Die Austrittsöffnung liegt in der Regel diametral gegenüberliegend zur Eintrittsöffnung 20. Die antriebsseitige Drehlagerung der Antriebswelle 18 erfolgt bei dem Ausführungsbeispiel nach
Nach den Ausführungsbeispielen befindet sich auf der der Pumpenplatte 12 zugewandten Seite des ersten (vorderen) Gehäusedeckels 14A eine Gehäusedeckelaussparung 24, in der eine Ringdichtung als Wellendichtung 26 zur radialen Abdichtung der Antriebswelle 18 gegenüber der Pumpenkammer und dem ersten (vorderen) Gehäusedeckel 14A dient. Eine zur Pumpenkammer hin sich, vorzugsweise konisch, erweiternde Vorkammer 24A der Aussparung 24 versorgt die Wellendichtung 26 mit ständig sich austauschendem zu pumpenden Fluid.According to the embodiments located on the
Bei dem Ausführungsbeispiel nach
Bei dem Ausführungsbeispiel nach
Die in
Einen Schnitt durch eine mehrstufige Zahnradpumpe 10 kann der
Der
- 1010
- Zahnradpumpegear pump
- 12, 12'12, 12 '
- Pumpenplattepump plate
- 14A14A
- erster Gehäusedeckelfirst housing cover
- 14B14B
- zweiter Gehäusedeckelsecond housing cover
- 16A, 16A'16A, 16A '
- erstes Pumpenzahnrad (Antriebszahnrad)first pump gear (drive gear)
- 16B, 16B', 16B", 16B"'16B, 16B ', 16B ", 16B"'
- zweites Pumpenzahnradsecond pump gear
- 1818
- Antriebswelledrive shaft
- 18A18A
- AntriebsdrehzapfenDrive trunnion
- 18B18B
- Wellenzapfenshaft journal
- 18C18C
- PassfederAdjusting spring
- 18D18D
- PassfederAdjusting spring
- 19, 19'19, 19 '
- zweite Wellesecond wave
- 2020
- Eintrittsöffnunginlet opening
- 2121
- Pumpenkammerpump chamber
- 21A21A
- PumpenkammerdichtungPump chamber seal
- 2222
- Lagerbuchsebearing bush
- 2424
- Aussparungrecess
- 24A24A
- Vorkammerantechamber
- 2626
- Wellendichtungshaft seal
- 26A26A
- Stützringsupport ring
- 2828
- Vorgelegecountershaft
- 28A28A
- Kammerchamber
- 28B/C28B / C
- radiale Bohrungenradial bores
- 3030
- Wellendichtungshaft seal
- 32A32A
- Passbohrungfitting bore
- 32B32B
- Passbohrungfitting bore
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL10001269T PL2216550T3 (en) | 2009-02-06 | 2010-02-08 | Gear wheel pump with shaft seal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202009001525U DE202009001525U1 (en) | 2009-02-06 | 2009-02-06 | gear pump |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2216550A2 true EP2216550A2 (en) | 2010-08-11 |
EP2216550A3 EP2216550A3 (en) | 2016-07-27 |
EP2216550B1 EP2216550B1 (en) | 2018-07-25 |
Family
ID=41838544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10001269.9A Active EP2216550B1 (en) | 2009-02-06 | 2010-02-08 | Gear wheel pump with shaft seal |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2216550B1 (en) |
DE (1) | DE202009001525U1 (en) |
ES (1) | ES2688647T3 (en) |
PL (1) | PL2216550T3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202015006862U1 (en) | 2015-10-02 | 2015-10-23 | Beinlich Pumpen Gmbh | Pump for hydraulic media |
DE202023000769U1 (en) | 2023-04-06 | 2023-08-09 | SKTEC GmbH | Gear pump with sealing system |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1822807U (en) | 1959-01-15 | 1960-12-01 | Kirk & Kompagni | GEAR PUMP FOR HOMOGENIZERS. |
DE1927514U (en) | 1965-08-25 | 1965-11-18 | Bayerische Motoren Werke Ag | HEATING AND VENTILATION DEVICE FOR INSTALLATION IN FRONT OF OR UNDER THE DASHBOARD OF MOTOR VEHICLES. |
DE6924726U (en) | 1969-06-19 | 1969-10-16 | V D O Tachometer Werke Adolf S | GEAR PUMP OR MOTOR |
DE8101898U1 (en) | 1981-01-27 | 1982-07-15 | Robert Bosch Gmbh, 7000 Stuttgart | GEAR MACHINE (PUMPS OR MOTOR) |
DE2411492C2 (en) | 1974-03-11 | 1984-07-26 | Robert Bosch Gmbh, 7000 Stuttgart | Gear pump |
US6857860B1 (en) | 2000-05-08 | 2005-02-22 | Pomtava Sa | Metering pump for liquid products |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3312868C2 (en) * | 1983-04-09 | 1986-03-20 | Glyco-Antriebstechnik Gmbh, 6200 Wiesbaden | Hydraulic pump |
JP3169146B2 (en) * | 1992-08-06 | 2001-05-21 | 株式会社豊田自動織機製作所 | Vehicle heating system |
CA2176404A1 (en) * | 1996-05-08 | 1997-11-09 | Yuri Belman | Gear pump and seal for use therewith adapted for use in vacuum applications |
DE19942297A1 (en) * | 1999-09-04 | 2001-03-08 | Bosch Gmbh Robert | Gear machine |
-
2009
- 2009-02-06 DE DE202009001525U patent/DE202009001525U1/en not_active Expired - Lifetime
-
2010
- 2010-02-08 PL PL10001269T patent/PL2216550T3/en unknown
- 2010-02-08 EP EP10001269.9A patent/EP2216550B1/en active Active
- 2010-02-08 ES ES10001269.9T patent/ES2688647T3/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1822807U (en) | 1959-01-15 | 1960-12-01 | Kirk & Kompagni | GEAR PUMP FOR HOMOGENIZERS. |
DE1927514U (en) | 1965-08-25 | 1965-11-18 | Bayerische Motoren Werke Ag | HEATING AND VENTILATION DEVICE FOR INSTALLATION IN FRONT OF OR UNDER THE DASHBOARD OF MOTOR VEHICLES. |
DE6924726U (en) | 1969-06-19 | 1969-10-16 | V D O Tachometer Werke Adolf S | GEAR PUMP OR MOTOR |
DE2411492C2 (en) | 1974-03-11 | 1984-07-26 | Robert Bosch Gmbh, 7000 Stuttgart | Gear pump |
DE8101898U1 (en) | 1981-01-27 | 1982-07-15 | Robert Bosch Gmbh, 7000 Stuttgart | GEAR MACHINE (PUMPS OR MOTOR) |
US6857860B1 (en) | 2000-05-08 | 2005-02-22 | Pomtava Sa | Metering pump for liquid products |
Also Published As
Publication number | Publication date |
---|---|
DE202009001525U1 (en) | 2010-06-24 |
ES2688647T3 (en) | 2018-11-06 |
EP2216550A3 (en) | 2016-07-27 |
PL2216550T3 (en) | 2018-12-31 |
EP2216550B1 (en) | 2018-07-25 |
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