EP2834521B1 - Pompe de dosage en matière plastique - Google Patents

Pompe de dosage en matière plastique Download PDF

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Publication number
EP2834521B1
EP2834521B1 EP13704120.8A EP13704120A EP2834521B1 EP 2834521 B1 EP2834521 B1 EP 2834521B1 EP 13704120 A EP13704120 A EP 13704120A EP 2834521 B1 EP2834521 B1 EP 2834521B1
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EP
European Patent Office
Prior art keywords
rotor
metering pump
rotor blade
pump housing
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.)
Active
Application number
EP13704120.8A
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German (de)
English (en)
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EP2834521A1 (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
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Robert Bosch GmbH
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Filing date
Publication date
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Publication of EP2834521A1 publication Critical patent/EP2834521A1/fr
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Publication of EP2834521B1 publication Critical patent/EP2834521B1/fr
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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 via gears coupled to each other, rotatably driven rotors, which are mounted in a pump housing, which is provided with intake and exhaust nozzles, each rotor having 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 they are known on soap dispensers for liquid soaps or as here of particular interest in the hospitality industry, where, for example, in fast food companies mustard, ketchup or creamer delivered with such hand-operated piston pumps metered. Despite these metering pumps, however, 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. However, where such metering pumps are also used to add a special amount of a liquid food to a recipe, the taste is varied by improper operation, which is not always appreciated by customers.
  • the plastic metering pump of interest here should be designed in particular for foods which are dispensed in so-called tubular bags or other soft packaging made of plastic films, wherein in a preferred embodiment here the metering pump is specially adapted for this purpose, 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.
  • gear pumps customary today, such solid liquid foods can not be dispensed in metered quantities.
  • gear pumps for example in the FR-2313971 is shown, this can hardly be realized.
  • 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 from the US 3054417 where a metering pump for liquid media for admixing other liquids is shown, in which case each rotor has three wing arms and these wing arms together roll over and transport the medium on.
  • each rotor has three wing arms and 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 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.
  • EP-1'892'417 shows a further metering pump, which is designed as an insert into an outer metallic housing, but nevertheless created for the one-time use and has a plastic housing.
  • the gear mechanism with which the correct relative position of the two rotors is ensured is part of a outside of the actual pump arranged gear and not part of the intended for one-time use parts.
  • Sealing components in the form of lip seals for the rotor shafts are also present only as separately inserted elements. Because of the design of this rotary lobe pump as an insert in a rigid metal housing and because of the rotors penetrating drive shafts which also serve the purpose of keeping the housing parts sealing together, the existing sealing measures concentrate because also specifically on this area.
  • a metering pump made of plastic of the type mentioned, wherein each rotor has two diametrically arranged on the rotor shaft rotor blade walls, at the peripheral ends of each partially cylindrical wall is formed as a rotor blade shoe, the rotor blade on the cylindrical inner wall portions of the pump housing on the one hand and to the Rotary shafts of the adjacent rotor on the other hand rest in a sliding and sealing, the metering pump is characterized in that on each rotor shaft, a gear is integrally formed.
  • each rotor blade shoe on the outside of the part-cylindrical wall at least one parallel to the rotor axis extending sealing scraping edge, 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 is symbolically a preferred application of the inventive metering pump, which is generally designated 1, shown on a tubular bag 2.
  • the metering pump 1 is held on the tubular bag 2 by means of a fastening sleeve 3 which is provided with a flange 4 on the tubular bag 2.
  • the connection of the flange 4 with the tubular bag 2 is preferably carried out by ultrasonic welding.
  • the metering pump itself is shown with a view of a fixed end wall 8 of the pump housing 5, in which case a rotor shaft end 15 with a 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.
  • the metering pump 1 is shown with the attachment piece on its own.
  • opening means 17, which are formed here as perforating and incisors and in this position are still completely within the intake manifold 6 before the first use.
  • said opening means 17 cut open an aseptically closed container, preferably a tubular bag made of plastic film.
  • 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 in the Fig. 1 As already mentioned, looking at 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 metering pump 1 with a detachable end wall 9. This detachable end wall 9 is laterally offset or shown solved.
  • the detachable end wall 9 can also be referred to as a pump housing cover. One looks in this figure on the outside of the pump housing cover and recognizes outwardly projecting closed bearing bushings 19, which are able to accommodate the rotor shaft end 15 on the inside. The outwardly closed bearing bushes 19 are held stabilized with stiffening ribs 20 on the outside of the detachable end wall 9.
  • each rotor is provided with a rotor shaft 12, where 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, each rotor blade 14 constantly abuts either on the inside of the pump housing or on the rotor shaft 12 of the adjacent rotor.
  • Fig. 4 now the design of the two rotors can be seen in detail. These are shown on their own in a correct relative position as provided in the installation, but omitting the pump housing 5.
  • the already in connection with the Fig. 3 mentioned parts, namely the rotor shaft 12 and the corresponding 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 purify and prevent deposits in the pump housing, which can lead to a reduction in quality and leaks and, in the worst case, blockages of the pump.
  • 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 hinge grooves 25 are located closer to the rotor blade walls 13 than the sealing scraping edges 23 arranged on the opposite side. The joint grooves 25 thus allow a resilient articulated movement of the corresponding end edges 22 pivotably about the hinge groove 25. Are formed on both sides of the rotor blade shoes on the outer surfaces 21 Dichtschabkanten 23, it is of course on both sides of the inner surface 24 corresponding joint grooves 25 at.
  • the rotor blade walls 13 have end faces 26.
  • the gears are connected to these end faces in one piece.
  • 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. This Leksabstreifrippen 28 not only act sealing, but also clean the rotor blade 14, on the outside of 21 there may be formed deposits. These constructive features practically a self-cleaning metering pump is formed.
  • FIG. 5 the pump housing 5 is shown by itself.
  • the intake manifold 6 and the outlet 7 are only partially visible.
  • the pump housing cover, or the detachable end wall of the pump housing is removed.
  • 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 of rotor shaft ends 15, which are designed as a rotor shaft journal.
  • 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.
  • both rotors also have a so-called drive coupling part 16 at that rotor shaft end with the larger diameter, which already has a reference to FIG Fig. 1 has been described. While in the Fig. 1 On the left the open bearing sleeve 30 is arranged and thus one recognizes there the drive coupling part 16 is in the Fig.
  • Fig. 6 is now the detachable end wall 9 and the pump housing cover 9 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.
  • Fig. 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.
  • edge area that deposits can form.
  • bearings are molded in the detachable end wall. However, these are referred to here as closed bearing bushes 19. Since these bushings 19 are closed, no additional sealing means are required here.
  • the diameter of these closed bearing bushes 19 is substantially smaller than the diameter of the two bearing sleeves 29 and 30. In these closed bearing bushes 19 engage the rotor shaft ends 15, which are designed as a bearing pin 30, as shown most clearly in the Fig. 4 is apparent.
  • 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, their deposits on the pump housing and on the rotor wing shoes or on the rotor shafts are continuously removed by the means described above. This ensures that the metering pump, which serves as a disposable metering pump, always works reliably for the required service life.
  • the food which is delivered in the fully closed aseptic tubular bag can be offered without or at least substantially less preservative.

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

Claims (13)

  1. Pompe de dosage (1) en matière plastique comprenant deux rotors (10) accouplés l'un à l'autre par le biais de roues dentées (11) et pouvant être entraînés en sens inverses, lesquels rotors sont montés dans un carter de pompe (5) qui est doté d'une tubulure d'aspiration (6) et d'une tubulure de sortie (7), chaque rotor (10) comprenant un arbre de rotor (12) dont les extrémités d'arbre de rotor (15) sont logées dans les parois (8, 4) du carter de pompe (5), et chaque rotor (10) comprenant deux parois de pale de rotor (13) disposées diamétralement sur l'arbre de rotor (12), aux extrémités périphériques desquelles est formé respectivement un patin de pale de rotor (14) partiellement cylindrique, les patins de pale de rotor (14) s'appuyant de manière glissante et étanche d'une part contre les régions de paroi interne cylindriques du carter de pompe (5), et d'autre part contre les arbres de pale de rotor (13) du rotor adjacent (10), caractérisée en ce qu'une roue dentée (11) est formée d'un seul tenant sur chaque arbre de rotor (12).
  2. Pompe de dosage (1) selon la revendication 1, caractérisée en ce que le carter de pompe (5) comprend une paroi frontale (8) reliée solidement au carter de pompe (5) et une paroi frontale (9) reliée de manière amovible à celui-ci, au moins une extrémité d'arbre de rotor (15) comprenant une partie d'accouplement d'entraînement (16) traversant le carter de pompe (5), laquelle traverse la paroi frontale reliée solidement au carter de pompe (5).
  3. Pompe de dosage (1) selon la revendication 2, caractérisée en ce que les deux rotors (10) sont identiques et les deux comprennent par conséquent une partie d'accouplement d'entraînement (16), l'une des parties d'accouplement d'entraînement (16) étant montée dans une deuxième douille de palier ouverte (30) et l'autre étant montée dans une douille de palier (29) fermée vers l'extérieur.
  4. Pompe de dosage (1) selon la revendication 1, caractérisée en ce que chaque patin de pale de rotor (14) comprend, sur sa surface extérieure (21), au moins une arête de raclage d'étanchéité (23) s'étendant parallèlement à l'axe de rotor (A), laquelle est disposée dans la région d'une arête d'extrémité (22), présente dans le sens de rotation, du patin de pale de rotor (14) respectif.
  5. Pompe de dosage (1) selon la revendication 4, caractérisée en ce que chaque patin de pale de rotor (14) comprend respectivement une arête de raclage d'étanchéité (23) s'étendant parallèlement à l'axe de rotor (A), à la fois dans la région d'une arête d'extrémité (22) présente dans le sens de rotation et dans la région d'une arête d'extrémité présente dans le sens inverse au sens de rotation.
  6. Pompe de dosage (1) selon la revendication 4 ou 5, caractérisée en ce qu'une rainure d'articulation (25) est disposée dans la région entre chaque arête de raclage d'étanchéité (23) et la paroi de pale de rotor (13) sur la surface interne (24) du patin de pale de rotor (14), c'est-à-dire sur le côté éloigné de l'arête de raclage d'étanchéité (13).
  7. Pompe de dosage (1) selon la revendication 3, caractérisée en ce qu'au moins une lèvre d'étanchéité périphérique (31) est formée d'un seul tenant dans la deuxième douille de palier ouverte (30).
  8. Pompe de dosage (1) selon la revendication 1, caractérisée en ce qu'au moins une lèvre d'étanchéité (27) servant à l'appui étanche contre la paroi frontale amovible (9) du carter de pompe (5) est prévue sur les parois de pale de rotor (13), sur leurs côtés frontaux (26) éloignés des roues dentées (11).
  9. Pompe de dosage (1) selon la revendication 1, caractérisée en ce que sur chaque arbre de rotor (12) est disposée au moins une nervure de raclage longitudinale (28) orientée radialement vers l'extérieur et s'étendant parallèlement à l'axe d'arbre de rotor (A).
  10. Pompe de dosage (1) selon la revendication 9, caractérisée en ce que deux nervures de raclage longitudinales (28) parallèles sont disposées entre les deux parois de pale de rotor (13) s'étendant diamétralement, des deux côtés de l'arbre de rotor (12).
  11. Pompe de dosage (1) selon la revendication 1, caractérisée en ce que la tubulure d'aspiration (6) est dotée de moyens d'ouverture (17) coupants et/ou perforants et d'une tubulure de fixation (3) dotée d'une bride (4), laquelle tubulure de fixation peut être soudée sur une paroi de récipient.
  12. Pompe de dosage (1) selon la revendication 12, caractérisée en ce que la tubulure de sortie (7) est dotée d'un couvercle de fermeture (18).
  13. Dispositif de dosage (1) selon la revendication 3, caractérisé en ce que des douilles de palier fermées (19) pour les deux rotors (10) sont moulées dans la paroi frontale amovible (9) du carter de pompe (5).
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 EP2834521A1 (fr) 2015-02-11
EP2834521B1 true 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

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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
None *

Also Published As

Publication number Publication date
US20150056063A1 (en) 2015-02-26
BR112014024399A2 (fr) 2017-06-20
CN104246219B (zh) 2016-10-26
DE102012205568A1 (de) 2013-10-10
US10060431B2 (en) 2018-08-28
WO2013149750A1 (fr) 2013-10-10
ES2735004T3 (es) 2019-12-13
CN104246219A (zh) 2014-12-24
BR112014024399B1 (pt) 2022-04-05
EP2834521A1 (fr) 2015-02-11

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