EP2834521A1 - Pompe de dosage en matière plastique - Google Patents

Pompe de dosage en matière plastique

Info

Publication number
EP2834521A1
EP2834521A1 EP13704120.8A EP13704120A EP2834521A1 EP 2834521 A1 EP2834521 A1 EP 2834521A1 EP 13704120 A EP13704120 A EP 13704120A EP 2834521 A1 EP2834521 A1 EP 2834521A1
Authority
EP
European Patent Office
Prior art keywords
rotor
pump housing
pump
rotor blade
dosing 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
Application number
EP13704120.8A
Other languages
German (de)
English (en)
Other versions
EP2834521B1 (fr
Inventor
Dan Barron
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2834521A1 publication Critical patent/EP2834521A1/fr
Application granted granted Critical
Publication of EP2834521B1 publication Critical patent/EP2834521B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/24—Rotary-piston machines or pumps of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions
    • 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
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • F04B13/02—Pumps specially modified to deliver fixed or variable measured quantities of two or more fluids at the same time
    • 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
    • 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
    • F04C2/123—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 radially or approximately radially from the rotor body extending tooth-like elements, co-operating with recesses in the other rotor, e.g. one tooth
    • 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
    • F04C2/126—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 radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/003—Having contrarotating parts

Definitions

  • the present invention relates to a metering pump made of plastic with two over
  • each rotor has a rotor shaft, store the rotor shaft ends in the walls of the pump housing.
  • Metering pumps are known in all sizes and types. As metering pumps made of plastic hand-operated piston pumps are known in particular, as on
  • Soap dispensers are known for liquid soaps or as here of particular interest in the hospitality industry, where, for example, in the fast food companies mustard, ketchup or creamer are dispensed dosed with such hand-operated piston pumps.
  • the quantity delivered varies relatively greatly, since in the case of the metering pumps, in particular those as described here, the stroke should actually be fully utilized with each actuation, but this is usually not the case. Instead, often one, two or three Kurzhube be carried out and varies accordingly, the amount very strong. As long as this amount is given as an addition to a hamburger, this plays only a minor role. But there, where such dosing pumps are also used to give a prescription a special amount of a liquid food, is due to incorrect operation of the
  • metering pump made of plastic should be especially designed for food that are dispensed in so-called tubular bags or other soft packaging made of plastic films, in one preferred here
  • the metering pump is specially adapted for this, as disclosed in claim 12.
  • liquid foods also contain larger amounts of solids.
  • Typical examples of such liquid foods are, for example, sauce tartare, mustard sauces with pickles, vanilla sauce with chocolate or almonds, etc. With the dosing pumps customary today, such solid liquid foods can not be dispensed in metered quantities.
  • dosing pumps are suitable for such dosing pumps, in particular in which the rotors have two or more rolling elements. Examples of such pumps are known from US 3054417, where a
  • each rotor has three wing arms and these wing arms together roll over and transport the medium on.
  • these wing arms together roll over and transport the medium on.
  • In such pumps between the housing and the individual rotor blades enough space to transport liquids with solid particles.
  • the larger solid particles are less the larger solid particles a problem, but rather the smaller solid parts that stick to the mutually rolling rotor blades and are completely crushed during the rolling process, whereupon a coating can form, which reduces the flow rate and can even lead to blockages.
  • a metering pump made of plastic of the type mentioned, which is characterized in that each rotor has two rotor blade walls arranged diametrically on the rotor shaft, at whose peripheral ends in each case a part-cylindrical wall is formed as a rotor blade shoe, wherein the rotor blade shoes on the cylindrical inner wall portions of Pump housing on the one hand and on the rotor shafts of the adjacent rotor on the other hand, sliding and sealing abut.
  • each rotor blade shoe on the outside of the partially cylindrical wall has at least one sealing scraping edge running parallel to the rotor axis, which is close to the front edge in the direction of rotation respective part-cylindrical wall of the rotor blade shoe is arranged. This ensures that no deposits can build up on the housing wall.
  • Fig. 1 A preferred use of the metering pump according to the invention mounted on a tubular bag.
  • Fig. 2 shows a perspective view of the metering pump with the
  • Fig. 3 shows again the metering pump in a side view, again below
  • Fig. 5 shows a partial perspective view of the pump housing on its own and Fig. 6 shows the detachable pump housing wall in perspective view with a view of the inside. Finally, shows the inlet nozzle of the metering pump with a
  • Opening means and a mounting flange with flange for welding connection with a tubular bag Opening means and a mounting flange with flange for welding connection with a tubular bag.
  • FIG. 1 a preferred application of the metering pump according to the invention, which is denoted overall by 1, is shown symbolically on a tubular bag 2.
  • the metering pump 1 is on the tubular bag 2 by means of a
  • Attachment 3 which is provided with a flange 4 is held on the tubular bag 2.
  • the connection of the flange 4 with the tubular bag 2 takes place
  • the metering pump itself has a pump housing 5 with an intake manifold 6 and an outlet 7.
  • the intake manifold 6 is screw-connected to the
  • Drive coupling part 16 provided by the aforementioned solid end wall 8 protrudes and one recognizes the drive coupling part 16.
  • the drive coupling part serves to be positively connected to a drive means, not shown here.
  • metering pump 1 is shown with the attachment piece alone.
  • opening means 17 which are formed here as perforating and incisors and in this position before the first use still completely within the
  • Ansaugstutzens 6 are. Before the first use of the pump housing 5 with his intake manifold 6 in the attachment piece 3 to a stop
  • the mentioned opening means 17 an aseptically closed container, preferably a tubular bag made of plastic film, cut open.
  • the outlet port 7 is provided with a closure cap 18, which ensures that during transport and storage no foreign matter or foreign particles can get into the metering pump.
  • the pump housing 5 is shown open. While one looks in Fig. 1 as already mentioned on the fixed end wall 8 of the pump housing 5, here the metering pump 1 is shown rotated by 180 ° and you look at that side of the
  • Dosing pump 1 with a detachable end wall 9 This detachable end wall 9 is shown laterally offset or solved.
  • the detachable end wall 9 can also as
  • each rotor is provided with a rotor shaft 12, wherein one here looking at the rotor shaft ends 15, and wherein on the rotor shafts 12 each two diametrically opposed rotor blade walls 13 are formed. At the peripheral ends of the rotor blade walls 13, a rotor blade shoe 14 is formed in each case.
  • Each rotor blade has a part-cylindrical shape, which is adapted to the cylindrical part of the pump housing 5 in the curvature. As can be seen here, everyone lies
  • Rotor blade 14 constantly either on the inside of the pump housing on or on the rotor shaft 12 of the adjacent rotor.
  • Rotor shaft ends 15 are not referred to again here, so as not to unnecessarily burden the Fig.
  • the special embodiment of the rotor wing shoes 14 is particularly clearly visible in this figure.
  • the rotor shoes 14 are integrally formed as already mentioned at the peripheral ends of the rotor blade walls 13.
  • the rotor blade shoes have a part-cylindrical outer surface 21. The radius of curvature of this outer surface corresponds to the distance between the axis A, which passes through the rotor shaft 12 centrally in the longitudinal direction and the outer surface 21 of the rotor blade shoes.
  • the inventive metering pump is preferably at least practically designed so that the pump seals the connection between the intake manifold and outlet.
  • the pump or its rotors and the pump housing 5 to a plurality of different sealing elements.
  • these sealing elements also have a cleaning effect and prevent deposits in the pump housing which lead to a reduction in quality and to leaks and in the worst case too
  • each rotor vane shoe 14 is provided with two sealing scraping edges 23, both in the direction of the leading end edge 22 and near the trailing end edge 22. These edges are referred to both times as end edge 22, because preferably both rotors 10 are made absolutely identical so only need an injection mold. This also has the advantage that with the same design of the two rotors also during assembly no source of error arises.
  • the Dichtschabkante 23 which preferably has a cross-sectionally approximately triangular shape causes the outer surface 21 is no longer completely rests against the inner wall of the pump housing 5. However, it also means that the rotor wing shoes 14 are deformed in the outer region. In order to facilitate this deformation and thus to achieve a resilient contact pressure of the sealing scraping edges 23, 24 joint grooves 25 are mounted on the inner surface. These joint grooves 25 are closer to the
  • Rotor wing walls 13 than those arranged on the opposite side
  • Pump housing 5 come to lie to the detachable end wall 25 and the pump housing cover, are centrally extending from the rotor shaft ends to the outer surface 21 of the rotor blade shoes each extending a sealing lip 27. On the opposite end, which is not visible here, the gears are connected to these end faces in one piece. Here you will attach such sealing lips on the corresponding end face portions extending only from the corresponding gear to the outer surface 21 of the rotor blade shoes.
  • Leksabstreifrippen 28 are also mounted on the rotor shaft. These Leksabstreifrippen 28 extend parallel to the axis A of the rotor shaft. In principle, it suffices in each case to attach a longitudinal scraping rib 28 to each rotor shaft, but preferably two such longitudinal scraping ribs are respectively mounted on the same side, so that the area between two rotor blade walls 13 is approximately divided into three.
  • Fig. 5 the pump housing 5 is shown by itself.
  • the intake manifold 6 and the outlet 7 are only partially visible.
  • Hierin second bearing sleeves 29, 30 are formed, wherein the one second bearing sleeve 29 is designed to be closed, and the other second bearing sleeve 30 is open to the outside.
  • a circumferential sealing lip 31 is preferably formed with a lesser height.
  • the rotors 10 thus have on their rotor shafts 12 on both sides
  • the rotor shaft pin on the side of the pump housing cover 9 have a smaller diameter, while the rotor shaft ends on the other side have a much larger diameter. Since, however, as already mentioned, preferably the two rotors are designed identically, both rotors also have at that rotor shaft end with the larger one
  • Diameter of a so-called drive coupling part 16 which has already been described with reference to FIG. 1. While the open bearing sleeve 30 is arranged on the left in FIG. 1 and thus the drive coupling part 16 is recognized there, the closed bearing sleeve 29 is shown on the right in FIG. In Fig. 5, in which one the
  • the detachable end wall 9 or the pump housing cover 9 is shown by itself. It can be seen on the peripheral edge of a plurality of spring tongues 32, which hook on the outside of the pump housing 5 in the closed state of the pump housing cover on the latching means 33 with corresponding cam 34. 2, an alternative form for attachment of the detachable end wall 9 is shown.
  • two spring tongues are formed on the inside of the pump housing cover 9, the essential are made more stable and are practically designed as a displacement body, which penetrates in that area in the pump housing, which is not detected by the two rotors.
  • the openings of intake manifold 6 and outlet 7 are present, where no deposits can form anyway.
  • latch means have, which are not apparent here and can intervene behind the edges of the inside of the intake manifold 6 and outlet 7 instead of behind cams.
  • bearings are molded in the detachable end wall. However, these are referred to here as closed bearing bushes 19. This one
  • Bushings 19 are closed, no additional sealant is required here.
  • the diameter of these closed bearing bushes 19 is substantially smaller than the diameter of the two bearing sleeves 29 and 30.
  • the rotor shaft ends 15 engage, which are designed as a bearing pin 30, as shown most clearly in Fig. 4.
  • Fig. 7 in which one recognizes the attachment piece 3 with the flange 4 separated from the intake manifold 6.
  • the opening means 17 are clearly visible, which are integrally formed on the intake manifold 6.
  • the intake manifold 6 also has an external thread 36. This external thread 36 is suitable for the internal thread 37 in the attachment piece. 3
  • the size of the solid particles plays It is of course of no importance that they must be of a size that is smaller than the distance between the two rotor shafts. But whether the solid particles are coarse-grained or fine-grained and thus more or less prone to deposits does not matter. On the one hand, the solid parts are not ground and on the other hand by the means described above their deposition on

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

L'invention concerne une pompe de dosage (1) en matière plastique comprenant deux rotors (10) reliés l'un à l'autre par des roues dentées (11) et pouvant fonctionner en sens opposés, qui sont montés dans un carter de pompe (5) muni de tubulures d'entrée (6) et de tubulures de sortie (7), chaque rotor (10) comportant un arbre de rotor (12) dont les extrémités (15) sont logées dans les parois (8, 4) du carter de pompe (5). Chaque rotor (10) comporte deux parois de pale (13) agencées diamétralement sur l'arbre de rotor (12) aux extrémités périphériques desquelles est formé respectivement un patin de pale de rotor (14) en partie cylindrique, les patins de pale de rotor (14) reposant de manière coulissante et étanche d'une part au niveau des parties de paroi intérieure cylindriques du carter de pompe (5) et d'autre part au niveau des arbres de pale de rotor (13) du rotor adjacent (10).
EP13704120.8A 2012-04-04 2013-02-14 Pompe de dosage en matière plastique Active EP2834521B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012205568A DE102012205568A1 (de) 2012-04-04 2012-04-04 Dosierpumpe aus Kunststoff
PCT/EP2013/052988 WO2013149750A1 (fr) 2012-04-04 2013-02-14 Pompe de dosage en matière plastique

Publications (2)

Publication Number Publication Date
EP2834521A1 true EP2834521A1 (fr) 2015-02-11
EP2834521B1 EP2834521B1 (fr) 2019-04-10

Family

ID=47714119

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13704120.8A Active EP2834521B1 (fr) 2012-04-04 2013-02-14 Pompe de dosage en matière plastique

Country Status (7)

Country Link
US (1) US10060431B2 (fr)
EP (1) EP2834521B1 (fr)
CN (1) CN104246219B (fr)
BR (1) BR112014024399B1 (fr)
DE (1) DE102012205568A1 (fr)
ES (1) ES2735004T3 (fr)
WO (1) WO2013149750A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013220242A1 (de) 2013-10-08 2015-04-23 Robert Bosch Gmbh Drehkolbenpumpe aus Kunststoff
TWI550190B (zh) * 2014-04-22 2016-09-21 周文三 減重型空氣壓縮機
DE102015215864A1 (de) * 2015-08-20 2017-02-23 Robert Bosch Gmbh Auslassstutzen mit einem auskragenden Flansch
CN112937946B (zh) * 2021-02-04 2022-06-21 河北嵘盛机械设备制造有限公司 一种灌装机

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3054417A (en) 1956-05-07 1962-09-18 Corvisier Louis Rene Apparatus for mixing liquids in a constant proportion
FR2226874A5 (en) * 1973-04-20 1974-11-15 Gevel Elisabeth Van De Volumetric pump with paddle type rotors - X-shaped rotors carry protuberances for improved sealing
DE2526215A1 (de) 1975-06-12 1976-12-30 Elastogran Gmbh Misch- und dosiervorrichtung fuer mehrkomponentenkunststoffe, insbesondere polyurethan
US5180299A (en) 1992-04-27 1993-01-19 Feuling Engineering, Inc. Roots type supercharger
US5558116A (en) 1994-03-07 1996-09-24 Createchnic Ag Metering cap
US6343724B1 (en) * 2000-07-10 2002-02-05 Hygiene Technik Inc. Unitary one-way valve for fluid dispenser
GB2440944B (en) 2006-08-11 2011-10-12 Itt Mfg Enterprises Inc Rotary lobe pump
TW200848617A (en) * 2007-06-08 2008-12-16 Jaguar Prec Industry Co Ltd Motor direct drive air pump, related applications and manufacturing methods thereof
AU2008203457B2 (en) * 2007-08-01 2011-05-26 Entapack Pty Ltd Opening mechanism for a flexible container
EP2085616B1 (fr) * 2008-01-29 2017-03-29 LEONARDO S.p.A. Pompe de lubrification
US7905717B2 (en) * 2008-06-09 2011-03-15 Wright Flow Technologies Limited PD pumps with a common gearbox module and varying capacities and easy access to mechanical seals
DE102008045440B4 (de) * 2008-09-02 2017-02-09 Börger GmbH Drehkolben einer Drehkolbenpumpe und Drehkolbenpumpe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013149750A1 *

Also Published As

Publication number Publication date
BR112014024399B1 (pt) 2022-04-05
US20150056063A1 (en) 2015-02-26
US10060431B2 (en) 2018-08-28
CN104246219A (zh) 2014-12-24
DE102012205568A1 (de) 2013-10-10
WO2013149750A1 (fr) 2013-10-10
CN104246219B (zh) 2016-10-26
EP2834521B1 (fr) 2019-04-10
ES2735004T3 (es) 2019-12-13
BR112014024399A2 (fr) 2017-06-20

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