EP1134416A2 - Dosierpumpe - Google Patents
Dosierpumpe Download PDFInfo
- Publication number
- EP1134416A2 EP1134416A2 EP01104328A EP01104328A EP1134416A2 EP 1134416 A2 EP1134416 A2 EP 1134416A2 EP 01104328 A EP01104328 A EP 01104328A EP 01104328 A EP01104328 A EP 01104328A EP 1134416 A2 EP1134416 A2 EP 1134416A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- drive
- dosing pump
- pump according
- pump
- 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
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
Definitions
- the invention relates to a metering pump with the in the preamble of the claim 1 specified characteristics.
- Dosing pumps working according to the displacement principle i.e. those with Diaphragm or piston pumps are either electromagnetic or driven by a motor.
- the latter have in terms of accuracy and adjustment options are significant advantages, however structurally much more complex, because the rotational movement of the motor needs to be translated into a translational one.
- a metering pump which has a stepper motor having. This drives a reduction gear, the output shaft of which Carries a cam disk which acts on one end of a rod, the other end of which acts on the diaphragm of the pump. The application takes place against spring force, which resets the rod or keeps in contact with the cam disc.
- the above-described metering pump is structurally very complex. That as Helical gear reduction gear is designed within a To store the support frame, as well as the engine. Because of the mechanical Meshing, the motor shaft is in mechanical contact with the Diaphragm pump driving rod, so that vibrations in both Directions are transmitted. It also occurs in the area between Cam and rod have increased friction, causing wear leads.
- the K3 / K5 dosing pump has a similar design LEWA company. With this metering pump, the moving parts are inside of a solid cast housing. The construction is manufacturing technology very complex and also has the aforementioned Disadvantages.
- the object of the invention is to improve a generic metering pump, especially for Avoiding the aforementioned disadvantages and reducing manufacturing costs.
- the basic idea of the present invention is instead of the otherwise usual Reduction gear a toothed belt drive between the motor shaft and eccentric drive.
- a toothed belt drive has the advantage that due to the positive connection between the input and output shaft the position of the shafts relative to one another is always defined. So it can be Use the stepper motor with a correspondingly stepped down step output side step of the eccentric drive and thus the pump stroke of the Diaphragm pump can be assigned.
- the toothed belt drive has the special advantage that Vibration decoupling between stepper motor and eccentric drive what advantages for the entire further device construction is achieved brings with it.
- a particularly stable device structure is obtained if the engine, gearbox, Eccentric drive and pump a common, if possible one-piece support body is provided.
- a support body is advantageous formed by a hollow profile, preferably in cross section in Is essentially U-shaped. This hollow profile is on the outside the motor and the front of the pump attached, which makes a special stable and at the same time technically inexpensive arrangement results.
- the hollow profile can, for example, by a light metal profile be formed, the inexpensive to manufacture and only in the predetermined Length must be separated. Such a profile is about it good thermal conductivity and high stability with tight manufacturing tolerances exhibit.
- the eccentric drive can be realized in that between the output-side spur gear of the toothed belt drive and this spur gear supporting axis an eccentric ring is incorporated, which is rotatable on the Axis, but is rotatably mounted to the spur gear.
- This eccentric ring is axially protruding laterally beyond the spur gear and rotatable stored a connecting rod eye of a connecting rod, the connecting rod the diaphragm pump drives.
- the eccentric ring has the advantage that it has the Connecting rod eye attached to the rod driving the diaphragm pump not only towards the pump, as is customary in the prior art, but also moved in the opposite direction.
- the connecting rod is also in the axial direction of the Conrod eyes, which is formed by means of a plastic, for example Leadership can take place.
- a spring can be provided, which when using a in cross-section U-shaped hollow profile as a support body by a U-shaped Spring clip can be formed, the rod and one leg of the Hollow profile overlaps and with one leg on the outside of the hollow profile and with its other leg on the rod itself supports.
- the construction according to the invention is not only inexpensive to manufacture, but also allows a largely free design of the housing, which is essentially just a static support function for the supporting body and all mechanical assembly parts arranged thereon exercises.
- the metering pump shown in its entirety in Fig. 1 consists in Essentially consisting of a housing 1, which is at the front through a cover 2 is lockable, which includes all controls and indicators and which also leads the electrical power supply into the device is.
- the housing 1, which is made of plastic, is essentially cuboid and open at the front. At the back it has openings 3 and a central opening 4.
- the openings 3 are used to carry out fastening screws, with which a membrane pump attached to the rear of the housing 1 5 including the rear housing wall with a drive unit 6 is connected.
- the central opening 4 is used for Perform the free end of a connecting rod 7, which is outside the Housing 1 is connected to the membrane in the area of the pump 5.
- the electrical and electronic control of the device is on one Main board insertable into the housing 1 parallel to the bottom of the housing 8 formed.
- the power electronics is close to one side of the
- the circuit board 8 is arranged in such a way that a heat distributor 9 attached to it is perpendicular to the board 8 and in the installed state conductive on one Side wall of the housing 1 abuts or thermally conductive via a thermal paste connected to it.
- a control and display unit 10 is on the inside of the cover 2 attached and connected to the motherboard 8 via a flat cable 11.
- the control and display unit 10, which is set within the cover 2 is protected from the outside by a film integrated in the lid 2.
- the cover 2 is placed sealingly on the housing 1 and with it connected by screws, just like the one connected on the back Diaphragm pump, so that the interior of the housing 1 is hermetically sealed is.
- the drive unit 6, which is shown in detail in FIG. 2, has a Cross-section essentially U-shaped hollow profile 12 that the support body the entire drive unit 6 and also the pump 5.
- the Hollow section 12 is a section of a light metal continuous casting section. It points in his (in Fig. 2) lower leg 13 on the outside a milling 14 and an opening 15.
- the milling 14 is corresponding a connecting flange 16 of a stepper motor 17 is designed and used to this flat 16 of the stepper motor flat on the lower leg 13 to be connected.
- the milling 14 is therefore essentially in the Area of stiffening ribs 18 on the lower leg 13 of the hollow profile 12.
- the opening 15 is used to pass through the motor shaft drive wheel (spur gear) 19 mounted thereon.
- the connecting flange 16 of the Motor 17 is connected to the leg 13 of the hollow profile 12 by means of four screws connected.
- Opening 20 is provided in the lower leg 13 to Cover 2 out an opening 20 smaller diameter and in alignment to this opening 20 in the upper leg 21 also one Opening 20 is provided.
- These holes 20 are for receiving an axis 22 is provided which is parallel to the motor shaft and transverse to the longitudinal direction of the hollow profile 12 is directed.
- An eccentric ring 24 can be rotated on the axis 22 by means of two needle bearings 23 stored.
- the eccentric ring 24 has a cylindrical outer surface as well a cylindrical inner surface, but the axes of which are spaced apart lie.
- a spur gear 25 is arranged in a rotationally fixed manner on the eccentric ring 24, and immediately next to it a radial bearing 26 which has a connecting rod eye 27 the connecting rod 7 is rotatably supported on the eccentric ring 24.
- the drive wheel 19 is connected to the spur gear 25 via a toothed belt 28, the number of teeth on the toothed belt 28 with each other Intermeshing wheels, as can be seen from Fig. 2, is chosen so that a reduction takes place.
- the eccentric drive that is the rotatable the axis 22 mounted eccentric ring 24 is with each rotation of the spur gear 25 the connecting rod 7 by 360 ° once in the direction of the pump 5 and moved back so that the pump 5 a full pressure stroke and does a full suction stroke.
- a guide 29 provided, which is held by the axis 22 within the profile 12 is and the one hand on the inside of the upper leg 21 of the Profile and on the other hand on the upper side of the connecting rod 7 in FIG. 2 is present.
- the guide 29 is made of plastic, so that little friction to the neighboring metal parts.
- a U-shaped spring clip 30 provided the one hand in a transverse groove 31 on the underside of the connecting rod 7 engages and on the other hand the upper leg 21 of the hollow profile 12 overlaps. This spring clip 30 presses the connecting rod 7 to the Guide 29, ie in the direction of the leg 21.
- a plastic molded part 32 is provided, which is also by the Axis 22 is held and ensures that those rotating on the axis 22 Do not rub parts on leg 13.
- the spur gear 25 made of plastic has a flange 33 on one side on with a light barrier 35 arranged on a circuit board 34 cooperates.
- the board is in the grooves of the hollow profile 12 parallel to the web held on the inside and attached to it.
- the flange 33 protrudes up to the light barrier 35, the flange 33 on one side with a Stage 36 is provided where the flange diameter is discontinuous in radial Protrudes towards the outside. This lead interrupts the light barrier 35 and thus forms a position transmitter of the drive unit.
- There the position of the spur gear 25 also the position of the connecting rod and thus the diaphragm of the pump 5 determines a predetermined one Position of the pump with the help of this position detection and can be determined or stored within the control electronics.
- the hollow profile 12 is designed such that between the pairs arranged stiffening ribs 18 grooves remain, the cross section is almost circular.
- the spur gear 25 at least partially overlaps the connecting rod eye 27, which results in a very compact design and in particular results in a low moment load on the bearings.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
- Fig. 1
- in perspektivischer Explosionsdarstellung eine Dosierpumpe gemäß der Erfindung,
- Fig. 2
- in vergrößerter perspektivischer Explosionsdarstellung die Antriebseinheit der Pumpe nach Fig. 1.
- 1 -
- Gehäuse
- 2 -
- Deckel
- 3 -
- Durchbrechungen
- 4 -
- Durchbrechung
- 5 -
- Membranpumpe
- 6 -
- Antriebseinheit
- 7 -
- Pleuelstange
- 8 -
- Hauptplatine
- 9 -
- Wärmeverteiler
- 10 -
- Steuer- und Anzeigeeinheit
- 11 -
- Flachkabel
- 12 -
- Hohlprofil
- 13 -
- unterer Schenkel von 12
- 14 -
- Einfräsung
- 15 -
- Durchbrechung
- 16 -
- Anschlussflansch
- 17 -
- Schrittmotor
- 18 -
- Versteifungsrippen
- 19 -
- Antriebsrad
- 20 -
- Durchbrechungen für Achse
- 21 -
- oberer Schenkel von 12
- 22 -
- Achse
- 23 -
- Nadellager
- 24 -
- Exzenterring
- 25 -
- Stirnrad
- 26 -
- Radiallager
- 27 -
- Pleuelauge
- 28 -
- Zahnriemen
- 29 -
- Führung
- 30 -
- Federbügel
- 31 -
- Quernut
- 32 -
- Formteil
- 33 -
- Flansch
- 34 -
- Platine
- 35 -
- Lichtschranke
- 36 -
- Stufe
Claims (9)
- Dosierpumpe mit einem Schrittmotor (17), mit Getriebemitteln (19, 25, 28) zum Untersetzen, mit einem Exzentertrieb (24, 27) zum Umsetzen der rotatorischen Bewegung einer Antriebswelle in eine translatorische Bewegung einer Stange (7), mit einer von der Stange (7) beaufschlagten Membranpumpe (5) und mit einer elektronischen Steuerung (8), dadurch gekennzeichnet, dass die Getriebemittel einen Zahnriementrieb (19, 25, 28) zwischen Motorwelle und dem Exzentertrieb (24, 27) aufweisen.
- Dosierpumpe nach Anspruch 1, dadurch gekennzeichnet, dass ein gemeinsamer, vorzugsweise einstückiger Tragkörper (12) für Motor (17), Getriebemittel (19, 25, 28), Exzentertrieb (24, 27) und Pumpe (5) vorgesehen ist.
- Dosierpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Tragkörper (1) durch ein vorzugsweise im Querschnitt im Wesentlichen U-förmiges Hohlprofil (12) gebildet ist, an dessen Außenseite der Motor (17) und stirnseitig die Pumpe (5) befestigt ist.
- Dosierpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Getriebemittel (19, 25, 28) und der Exzentertrieb (24, 27) im Wesentlichen innerhalb des Hohlprofils (12) angeordnet sind.
- Dosierpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schenkel (13, 21) des U-Profils (12) eine Achse (22) tragen, auf der das abtriebsseitige Stirnrad (25) des Zahnriementriebs (19, 25, 28) sowie der Exzentertrieb (24, 27) gelagert sind.
- Dosierpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwischen dem abtriebsseitigen Stirnrad (25) des Zahnriementriebs (19, 25, 28) und der Achse (22) ein Exzenterring (24) eingegliedert ist, der drehbar auf der Achse (22) sowie innerhalb eines benachbart zum Stirnrad (25) darauf sitzenden Pleuelauges (27) der Stange (7) gelagert ist.
- Dosierpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass innerhalb des Tragkörpers (12) eine Führung (29) für die Stange (7) angeordnet ist.
- Dosierpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Stange (7) mittels einer Feder (30) in der Führung (29) festgelegt ist.
- Dosierpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Feder durch einen Federbügel (30) gebildet ist, dessen einer Schenkel sich auf der Stange (7) und dessen anderer Schenkel sich an der Außenseite eines Schenkels (21) des Hohlprofils (12) abstützt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10012887 | 2000-03-16 | ||
DE10012887.4A DE10012887C5 (de) | 2000-03-16 | 2000-03-16 | Dosierpumpe |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1134416A2 true EP1134416A2 (de) | 2001-09-19 |
EP1134416A3 EP1134416A3 (de) | 2003-04-23 |
EP1134416B1 EP1134416B1 (de) | 2007-04-18 |
Family
ID=7634995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01104328A Expired - Lifetime EP1134416B1 (de) | 2000-03-16 | 2001-02-23 | Dosierpumpe |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1134416B1 (de) |
DE (2) | DE10012887C5 (de) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19623537A1 (de) | 1996-06-13 | 1997-12-18 | Bwt Wassertechnik Gmbh | Dosierpumpe und Dosierverfahren für Flüssigkeiten |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2394191A (en) * | 1944-06-09 | 1946-02-05 | Lerio Patent Cup Co Inc | Pumping system |
US3282224A (en) * | 1963-12-12 | 1966-11-01 | Rau Swf Autozubehoer | Membrane or piston pump |
US3740172A (en) * | 1971-06-01 | 1973-06-19 | Borg Warner | Reciprocating fuel pumps |
US3941519A (en) * | 1974-09-12 | 1976-03-02 | Mccauley Herbert J | Pump |
DE3139925A1 (de) * | 1981-10-08 | 1983-07-14 | Hewlett-Packard GmbH, 7030 Böblingen | Hochdruck-dosierpumpe |
DE4115169A1 (de) * | 1990-05-07 | 1992-02-06 | Siegfried Geiger | Vorrichtung zur einstellung des pumpenhubes einer durch einen motor angetriebenen kolbenpumpe |
DE4419927A1 (de) * | 1994-06-08 | 1995-12-14 | Bosch Gmbh Robert | Kolbenpumpe |
DE19726702A1 (de) * | 1997-06-24 | 1999-01-07 | Ralf Dr Ing Kaufmann | Vorrichtung, insbesondere Pumpe |
-
2000
- 2000-03-16 DE DE10012887.4A patent/DE10012887C5/de not_active Expired - Fee Related
-
2001
- 2001-02-23 DE DE50112354T patent/DE50112354D1/de not_active Expired - Lifetime
- 2001-02-23 EP EP01104328A patent/EP1134416B1/de not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19623537A1 (de) | 1996-06-13 | 1997-12-18 | Bwt Wassertechnik Gmbh | Dosierpumpe und Dosierverfahren für Flüssigkeiten |
Also Published As
Publication number | Publication date |
---|---|
DE10012887C5 (de) | 2014-06-18 |
EP1134416B1 (de) | 2007-04-18 |
DE50112354D1 (de) | 2007-05-31 |
DE10012887C1 (de) | 2001-10-31 |
EP1134416A3 (de) | 2003-04-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1798443B1 (de) | Getriebe und Fahrzeugsitz mit einem solchen Getriebe | |
EP1266153B1 (de) | Getriebebaukasten | |
DE2809390C2 (de) | Elektrisches Antriebsaggregat, insbesondere für Wischermotor | |
EP0431123A1 (de) | Antriebsvorrichtung, insbesondere für eine scheibenwischeranlage an einem kraftfahrzeug. | |
DE102011087556A1 (de) | Verstellantrieb für Verstelleinrichtungen eines Kraftfahrzeugsitzes | |
DE102006043599A1 (de) | Elektrischer Zylinder | |
EP0848165A2 (de) | Füllstücklose Innenzahnradmaschine | |
DE19839407C1 (de) | Elektrische Antriebseinheit | |
EP0982562A2 (de) | Messeil Wegsensor mit Profilen für Gehäuse und Trommel | |
EP1626202A1 (de) | Untersetzungsgetriebe und dieses verwendende Antriebseinheit | |
EP1935698A1 (de) | Antriebseinheit mit Fahr- und Lenkmotor für ein Antriebsrad eines Flurförderzeugs | |
EP3208152A1 (de) | Abklappvorrichtung für einen aussenspiegel | |
WO2007025779A2 (de) | Kurbeltrieb mit einer vorrichtung zur periodischen änderung der länge von dessen wirksamen hebel | |
EP0448937A2 (de) | Schlauchpumpe | |
DE3916945C2 (de) | Pendelgetriebe, insbesondere für Scheibenwischer an Kraftfahrzeugen | |
EP1775467B1 (de) | Schaltbarer Exzenterantrieb und Rührwerk mit zuschaltbarer Radialkolbenpumpe | |
DE1296921B (de) | Getriebe zur Umwandlung einer Drehbewegung in eine hin- und hergehende Bewegung, insbesondere zum Antrieb von Dosierpumpen | |
EP1078178B1 (de) | Exzenterzahnradgetriebe | |
DE10012887C5 (de) | Dosierpumpe | |
DE102005016803A1 (de) | Harmonic Drive Getriebe | |
DE2547994A1 (de) | Zahnradpumpe oder -motor | |
EP2277210B1 (de) | Rotationsantrieb | |
DE2048717A1 (de) | Scheibenwischeranlage für Fahrzeuge, insbesondere für Kraftfahrzeuge | |
DE4428410C2 (de) | Kompakte Regeleinheit für eine Flügelzellenpumpe | |
DE3922436C2 (de) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
17P | Request for examination filed |
Effective date: 20030521 |
|
AKX | Designation fees paid |
Designated state(s): DE FR GB IT |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
REF | Corresponds to: |
Ref document number: 50112354 Country of ref document: DE Date of ref document: 20070531 Kind code of ref document: P |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20070614 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20080121 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 16 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 17 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20200225 Year of fee payment: 20 Ref country code: IT Payment date: 20200221 Year of fee payment: 20 Ref country code: DE Payment date: 20200226 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20200219 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 50112354 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Expiry date: 20210222 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20210222 |