EP1477675B1 - Pompe de dosage - Google Patents

Pompe de dosage Download PDF

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Publication number
EP1477675B1
EP1477675B1 EP03010887A EP03010887A EP1477675B1 EP 1477675 B1 EP1477675 B1 EP 1477675B1 EP 03010887 A EP03010887 A EP 03010887A EP 03010887 A EP03010887 A EP 03010887A EP 1477675 B1 EP1477675 B1 EP 1477675B1
Authority
EP
European Patent Office
Prior art keywords
pump
membrane
support plate
carrier plate
housing
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.)
Expired - Lifetime
Application number
EP03010887A
Other languages
German (de)
English (en)
Other versions
EP1477675A1 (fr
Inventor
Mouridsen Brian
Jochumsen Hans Henrik
Rasmussen Janus Juul
Frederiksen Niels
Kähler Steen
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.)
Grundfos AS
Original Assignee
Grundfos AS
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 Grundfos AS filed Critical Grundfos AS
Priority to DE50304219T priority Critical patent/DE50304219D1/de
Priority to EP03010887A priority patent/EP1477675B1/fr
Publication of EP1477675A1 publication Critical patent/EP1477675A1/fr
Application granted granted Critical
Publication of EP1477675B1 publication Critical patent/EP1477675B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a metering pump.
  • a generic metering pump is known for example from DE 100 12 887 Cl.
  • a carrier profile is provided in the interior of a housing, in which an eccentric gear is arranged.
  • a drive motor is connected to the carrier profile.
  • a diaphragm pump is attached to the carrier profile, wherein the bolts holding the diaphragm pump engage in corresponding grooves on the carrier profile.
  • This arrangement has the disadvantage that the carrier profile with its grooves must be adapted exactly to the distances of the fastening bolts of the diaphragm pump and thus a certain type of diaphragm pump. This is very complicated and expensive in a carrier profile produced as an extruded profile. It is therefore not readily possible to combine different diaphragm pumps with one and the same gear arrangement.
  • metering pump is known from DE 297 09 831.
  • the diaphragm pump is also connected via bolts to the housing of the eccentric drive. Also in this arrangement, the threaded holes are provided at defined points for a particular diaphragm pump.
  • US 4,523,902 discloses a metering pump, in which at one end of the housing wall from one side of the diaphragm pump and of the attached to the other side of the drive device of the metering pump.
  • No. 5,676,531 discloses a metering pump which has a drive housing, on the end face of which a mounting plate is formed at a distance from which the diaphragm pump is fastened.
  • the mounting plate is adapted in diameter exactly to the diaphragm pump.
  • the dosing pump according to the invention has a support plate, on the first side of which a diaphragm pump and on the second oppositely directed side of a drive unit for driving the diaphragm pump are attached.
  • the drive unit is, for example, an eccentric gear, which converts a rotational movement of a drive motor into a linear movement of a drive ram driving the diaphragm.
  • This drive unit is attached with its housing or its support structure on the second side of the support plate, for example screwed.
  • a diaphragm pump is attached on the first side of the support plate.
  • the support plate thus forms a connecting element between the diaphragm pump and drive unit, wherein the support plate is located in the power flow between the diaphragm pump and the drive unit.
  • the support plate in particular has to transmit a tensile force between the diaphragm pump and the drive unit when the drive tappet has a compressive force exerts the membrane to close the power flow between the diaphragm pump and the drive unit.
  • the inventive arrangement of the support plate allows greater flexibility in the connection of different diaphragm pumps with different drive units, since serving as a connecting element between the diaphragm pump and drive unit support plate can be easily and inexpensively adapted to different diaphragm pumps and / or drive units.
  • the support plate at least two sets of fastening means for a diaphragm pump are formed, which allow the attachment of at least two different diaphragm pumps to the support plate.
  • Such an arrangement offers, for example, the option of two differently dimensioned diaphragm pumps optionally to one and the same pump unit, ie flanging its support plate in order to adapt the metering pump to different flow rates and purposes.
  • the drive unit and all other components of the metering pump remain the same, whereby the variety of parts is reduced and the production is simplified.
  • the fastening means may be in the form of threaded holes in the support plate.
  • the threaded bores in the two sets can be arranged differently from one another and, in particular, be spaced differently from one another.
  • the corresponding threaded bores may be spaced further apart than for a smaller diaphragm pump.
  • It can also be provided more than two sets of fasteners, whereby the adaptability of the invention Metering pump can be further increased, since it is possible to attach a larger variety of different diaphragm pumps to the support plate.
  • the support plate fastening means to which the diaphragm pump is attached, and fastening means to which the drive unit is attached, formed.
  • This allows each independent attachment of drive unit and diaphragm pump.
  • this offers the advantage of simpler installation and maintenance of the metering pump according to the invention.
  • the diaphragm pump can be released from the support plate without the drive unit must be solved.
  • the drive unit thus remains attached to the support plate when the diaphragm pump is released, for example, to replace it with another diaphragm pump. This is particularly advantageous when the drive unit is arranged in a pump housing, since then the pump housing for replacement of a pump pump housing arranged outside the pump does not need to be opened.
  • the support plate expediently has a central passage opening through which a drive tappet extends from the drive unit to a diaphragm of the diaphragm pump.
  • the central passage opening and arrangement of the drive plunger allows universal applicability for different sized diaphragm pumps with different sized membranes, since the drive plunger can always attack centrally on the membrane.
  • the fastening means preferably bores or threaded holes, radially further spaced from the central passage opening.
  • the drive unit is preferably arranged in a housing, and the support plate thereby forms at least a part of an end wall of the housing.
  • a control or regulating electronics as well as corresponding operating and display elements can be arranged in the housing.
  • the housing is preferably formed completely closed in order to protect the elements arranged in the interior of the housing from environmental influences. This is particularly important because metering pumps are often used in demanding environments where they are exposed to moisture or chemicals, for example. Characterized in that the support plate forms at least a portion of an end wall of the housing, it is possible to easily flange the diaphragm pump from the outside to the housing, ie to the support plate.
  • the housing has no force-transmitting function in the power flow between the diaphragm pump and the drive unit, since the forces occurring between the diaphragm pump and the drive unit are transmitted only via the support plate. Since thus the housing is kept substantially free of the forces occurring in the pumping operation, it is possible to manufacture the housing from a comparatively lightweight material, for example plastic.
  • the housing is designed as a tubular or cup-shaped profile, from its open side, the support plate with the drive unit is inserted into the housing.
  • the support plate preferably has an outer contour, which corresponds to the inner contour of the housing, so that the support plate can be flush mounted on an end face of the housing in the housing opening and closes it.
  • the support plate not only serves as a connecting element between the diaphragm pump and the drive unit, but at the same time forms an end wall or a part of an end wall of the pump housing.
  • the membrane pump preferably has a pump head in which a pump chamber is formed and which is clamped between the support plate and a front plate.
  • the pump head has in a known manner the fluid connections, ie suction and pressure connection, with the associated valves. Further, in the pump head, a pump room is formed, which communicates with the terminals and is closed at one side by a membrane.
  • the membrane is driven by a drive ram of the drive unit such that it periodically increases and decreases the pump space and thus achieves the desired pumping action.
  • the pump head is clamped between the support plate and a front plate spaced therefrom.
  • the production of the pump head made of plastic is also inexpensive, which in turn favors the provision of differently sized pump heads.
  • the front panel is preferably only a flat disc made of metal, which is also inexpensive to produce in different dimensions.
  • the front panel is preferably bolted to the support panel with the bolts extending through the pump head.
  • the bolts are preferably uniformly distributed, radially spaced around the pump chamber around, so that the forces can be absorbed and transmitted evenly.
  • the bolts between the support plate and the front panel acting on the pumping action between the support plate and front panel forces are absorbed.
  • the membrane of the diaphragm pump between the support plate and the pump head is clamped.
  • a corresponding recess may be formed in the pump head as a receptacle for the membrane, wherein the membrane is then clamped between the pump head and support plate at its periphery.
  • a receiving element is arranged between the membrane and the support plate, which has a receptacle for the membrane, wherein the membrane between the pump head and receiving element is clamped at its edge.
  • the receiving element makes it easy to provide an adapted to a specific membrane and a specific pump head recording without having to adjust the support plate.
  • receiving element, membrane and pump head as a unit form an exchangeable diaphragm pump, which can be flanged to a universally usable support plate.
  • the receiving element may preferably be formed of plastic, which allows a cost-effective production.
  • the support plate is formed as a plane metal part, while the contoured heels and grooves adapted to receive the membrane adapted to the membrane in the receiving element.
  • the receiving element is preferably clamped together with the pump head between the front plate and the support plate, whereby these elements are fixed to the support plate and at the same time occurring during the pumping high pressure forces between the pump head, diaphragm and receiving element of the front panel and the support plate and the bolts arranged therebetween can be added ,
  • All arranged between support and front panel elements must therefore absorb substantially no tensile forces, so that they can be made of less solid materials, preferably made of plastic.
  • the receiving element is preferably formed so that it completely covers the support plate to the outside and is sealingly connected to the housing. This allows for a visually appealing design of the entire housing, since the receiving element, which is preferably made of plastic, can be easily adapted to the rest of the design of the housing. On the other hand, a receiving element designed in this way protects the underlying support plate from environmental influences.
  • the housing and the receiving element and the pump head can be made of plastic, so that only the front plate and its fastening bolts are present as exposed to the outside metal parts.
  • These elements can be made of stainless metal, preferably stainless steel. All other metal parts and in particular also preferably formed of metal support plate are protected inside the housing.
  • a sealing element for example an elastomer or rubber seal. So no moisture or other harmful substances, such as chemicals can penetrate into the interior of the housing.
  • the receptacle for the membrane in the receiving element is arranged spaced from the support plate, wherein between the membrane and the support plate, a chamber is formed.
  • This chamber between the membrane and the support plate serves to accommodate possible leakage from the pump chamber, for example, in the event that the membrane is leaking.
  • This chamber prevents the fluid to be pumped from penetrating into the interior of the housing and possibly damaging the drive unit there. Instead, leaking fluid is collected in the chamber in the receiver as leakage.
  • a drain opening is preferably provided in the chamber, through which the fluid can escape or be discharged.
  • Fig. 1 shows an exploded view of the metering pump according to the invention, wherein two alternatively to be mounted diaphragm pumps 2a and 2b are shown in the view.
  • the metering pump has a tubular or profiled gear housing 4, which is closed at its rear end by the lid 6 sealing. At the lid 6 control and display elements are additionally arranged. In the interior of the transmission housing 4, the electronic control or regulating devices necessary for operating the pump are arranged in addition to an eccentric gear 8. At its front end, the gear housing 4 is closed by a support plate 10.
  • the support plate 10 is made of metal and has an outer contour, which corresponds to the inner contour of the gear housing 4, so that the support plate 10 can be used at its periphery fitting in the opening on the front end side of the transmission case 4.
  • the support plate 10 is preferably held by latching means.
  • the support plate 10 represents the essential supporting element of the metering pump according to the invention, since it produces the mechanical connection between the eccentric 8 and diaphragm pump 2a and 2b.
  • a number of mounting holes is formed for attachment of the eccentric and the diaphragm pump 2a and 2b, as will be explained below with reference to FIG. 2.
  • the eccentric 8 has two spaced-apart plate-shaped support 12, which extend normal to the support plate 10.
  • the carriers 12 are connected to each other via pins 14 and held spaced from each other. Between the carriers 12, the actual crank mechanism 16 is arranged with the eccentric 18.
  • the crank mechanism 16 converts the rotational movement of a drive motor 20 into a linear back and forth movement of a drive tappet 22.
  • the drive rod 22 causes a deflection of the membrane 24a and 24b.
  • the eccentric 8 is fixed to the back of the support plate 10, which faces the interior of the transmission housing 4.
  • fastening bolts 26 are provided, which from the front, i. extend from the outside through the through holes 28 in the support plate 10 and engage in the holes in the end faces of the carrier 12.
  • the through holes 28 corresponding paragraphs or contact shoulders are formed, against which the screw heads of the fastening bolts 26.
  • the carrier 12 and thus the entire eccentric 8 are fixed by means of the fastening bolts 26 which extend through the support plate 10 through, on the back of the support plate 10.
  • the front of the support plate 10, d. H. the side facing the transmission case 4 outward, is designed for mounting a diaphragm pump 2a or 2b.
  • a plurality of threaded bores 30 is formed on the front side of the support plate 10, in which screws 32 can engage for attachment of the diaphragm pump 2a or 2b.
  • two circular arrangements of threaded holes 30 are provided, wherein the radially inner threaded holes 30 for fixing a smaller diaphragm pump 2b and the radially outer threaded holes 30 are used to attach a larger diaphragm pump 2a.
  • the diaphragm pumps 2a and 2b essentially consist of four parts, a receiving element 34a or 34b, the diaphragm 24a or 24b, a pump head 36a or 36b and a front plate 38a or 38b.
  • a receiving element 34a or 34b the diaphragm 24a or 24b
  • a pump head 36a or 36b the structure of the diaphragm pump 2b is identical except for its dimensions.
  • the entire diaphragm pump 2 a consisting of pump head 36 a, membrane 24 a and receiving element 34 a is fixed by the front plate 38 a and the screws 32 on the support plate 10.
  • the screws 32 extend through corresponding through holes 40 a and 42 a in the pump head 36 a and the receiving element 34 a and engage in the threaded holes 30 in the support plate 10 a.
  • the pump head 36a and the receiving element 42a is clamped between the front plate 38a and the support plate 10 via the screws 32.
  • the membrane 24a is fixed between the receiving element 34a and the pump head 36a.
  • a pump chamber closed by the membrane 24a is formed, which communicates with the fluid connections 44 and forms the actual delivery volume.
  • the fluid connections 44 have valve devices in a known manner.
  • the diaphragm pump ie the pump head 36a, the diaphragm 24a and the receiving element 34a
  • the support plate 10 and the front plate 38a and the screws 32 are formed of stainless metal.
  • the front plate 38a and the pump head 36a are further provided with openings, in which a vent valve 46 can be used to vent the pump space inside the pump head 36a can.
  • the receiving element 34a or 34b is formed so that it forms a cover plate for the front end side of the transmission housing 4. That is, the receiving element 34a has an outer contour which corresponds to the outer contour of the gear housing 4 at its end face, so that the peripheral edges of the receiving element 34a can come to rest on the front edges of the front end side of the gear housing 4.
  • a seal 48 is additionally arranged. This causes the receiving element 34a sealing the gear housing 4 to the front.
  • the mechanical connection between the diaphragm pump 2 and eccentric 8 producing support plate 10 is protected inside the transmission case 4 is arranged.
  • the support plate 10 can be made of a metal, which need not have any special corrosion resistance.
  • All the gear housing 4 to the outside final parts and the pump head 36a can be made of a against environmental influences, such as moisture or chemicals, resistant plastic.
  • the only exposed unprotected metal parts are the front plate 38a and its mounting screws 32, which are made of stainless steel. In this way, the number of elements to be manufactured from stainless metal is kept low, which enables a cost-effective production of the metering pump according to the invention.
  • the structure of the support plate 10 will be described in detail with reference to the plan view of the front side of the support plate 10 in Fig. 2 and the sectional view taken along the line BB in Fig. 2, which is shown in Fig. 3.
  • the support plate 10 has a central passage opening 50 through which the drive rod 22 from the eccentric 8 to the Membrane 24a and 24b extends. Radially closest to the central through-hole 50 are the through-holes 28 for fixing the supports 12 by means of the fastening bolts 26. Radially further out, two rings of threaded holes 30 for receiving the screws 32 are formed around the through-hole 50.
  • the inner ring of bores 30 serves for fastening the smaller diameter diaphragm pump 2b, while the outer ring of bores 30 serves for fastening the larger diaphragm pump 2a.
  • the two diaphragm pumps 2a and 2b differ due to their size in the delivery volume and the differential pressure that can be generated.
  • the appropriate diaphragm pump can be flanged to the support plate 10. It is also possible for more than two types of diaphragm pumps 2 to be flange-mounted to the support plate 10. The advantage here is that the attachment of the diaphragm pump 2 is independent of the attachment of the eccentric 8 on the support plate 10.
  • the support plate 10 is located in the power flow between the diaphragm pump 2 and the eccentric 8, so that the transmission housing 4 is largely kept free of the operating forces occurring in pumping operation. This makes it possible to inexpensively manufacture the gear housing 4 made of plastic and to manufacture only a few, mechanically loaded elements of metal in operation.
  • Fig. 4 shows a sectional view of the receiving element 34b, wherein the receiving element 34a correspondingly, only larger.
  • the receiving element 34b has a substantially planar formed back 51, the edge 52 is formed axially projecting to engage in the transmission housing 4.
  • the seal 48 (see FIG. 1) is arranged between the receiving element 34b and the transmission housing 4 in order to seal the interior of the transmission housing 4 to the outside.
  • 51 pins 54 are formed on the back, which engage for positioning in additional holes on the support plate 10.
  • the receiving element 34b has a annular projection on the outer end of an annular receptacle 56 is formed for the membrane 24b.
  • a chamber 58 In the interior of the annular projection, a chamber 58 is formed, in which leakage losses can be absorbed in the event of a leak in the membrane. At the bottom, the chamber 58 has a drain opening 60 for draining this leaked fluid.
  • a sealing collar 64 In the back 51 is centrally formed an opening 62 through which the drive ram 22 extends to the diaphragm 24b.
  • a sealing collar 64 In this opening, a sealing collar 64 (see Fig. 1) is used to seal the opening 62, ie, the sealing sleeve 64 seals the drive ram 22 against the receiving element 34b, so that no fluid from the chamber 58 penetrate into the interior of the transmission housing 4 can.
  • pins 66 are additionally provided, which engage in corresponding recesses on the pump head 36b in order to position this on the receiving element 34b.
  • the pump head 36b is shown in section in FIG. On the side facing the receiving element 34b, the pump head 36b has a receptacle 68.
  • the membrane 24b is fixed between the receptacle 68 and the receptacle 56 on the receiving element 52 by clamping on the circumference.
  • a pump chamber 70 is formed, which is closed by the voltage applied to the receptacle 68 membrane 24b.
  • the pump chamber 70 is in communication with the fluid ports 44, in which valve means are used in a known manner.
  • an opening 72 is formed at the front, which is also in communication with the pump chamber 70 and serves to receive the vent valve 46.
  • the through-holes 40b and 42b for the screws 32 can not be seen in FIGS.
  • receiving element 34b, diaphragm 24b and pump head 36b are placed against each other so that the membrane 24b is interposed between the receptacles 56 and 68. Then this will Arrangement with the front panel 38b and the screws 32 screwed to the support plate 10, wherein the assembly of membrane 24b, receiving element 34b and pump head 36b between the front panel 38b and the support plate 10 is clamped. At the same time, the receiving element 34b is pressed with its edge 52 against the front edge of the transmission housing 4, so that the transmission housing 4 is sealed on this side.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Claims (11)

  1. Pompe de dosage comprenant une plaque support (10) ayant une première face sur laquelle est fixée une pompe à diaphragme (2a ; 2b) par un ensemble de moyens de fixation formés dans la plaque support (10), et une seconde face opposée, sur laquelle est fixée une unité d'entraînement (8) pour l'entraînement de la pompe à diaphragme (2a ; 2b), de telle manière que la plaque support (10) soit située dans le flux de puissance entre la pompe à diaphragme (2a ; 2b) et l'unité d'entraînement (8), caractérisée en ce que, dans la plaque support (10), est formé au moins un autre ensemble de moyens de fixation (30) pour fixation, au choix, d'une pompe à diaphragme (2a, 2b) différente sur la plaque support (10).
  2. Pompe de dosage selon la revendication 1 dans laquelle les moyens de fixation (30) sur lesquels est fixée la pompe à diaphragme (2a, 2b) et des moyens de fixation (28) sur lesquels est fixée l'unité d'entraînement (8), sont formés dans la plaque support (10).
  3. Pompe de dosage selon l'une des revendications précédentes, dans laquelle la plaque support (10) présente un orifice de passage central (50) à travers lequel passe un poussoir d'entraînement (22) s'étendant de l'unité d'entraînement (8) à un diaphragme (24a ; 24b) de la pompe à diaphragme (2a ; 2b).
  4. Pompe de dosage selon l'une des revendications précédentes, dans laquelle l'unité d'entraînement (8) est disposée dans un carter (4) et la plaque support (10) forme au moins une partie d'une paroi frontale du carter (4).
  5. Pompe de dosage selon l'une des revendications précédentes, dans laquelle la pompe à diaphragme (2a ; 2b) présente une tête de pompe (36a ; 36b) dans laquelle est formée un compartiment de pompe (70) et qui est encastrée entre la plaque support (10) et une plaque frontale (38a ; 38b).
  6. Pompe de dosage selon la revendication 5, dans laquelle la plaque frontale (38a ; 38b) est fixée sur la plaque support (10) au moyen de boulons (32), et dans laquelle les boulons (32) s'étendent au travers de la tête de pompe (36a ; 36b).
  7. Pompe de dosage selon l'une des revendications 5 ou 6, dans laquelle un diaphragme (24a ; 24b) de la pompe à diaphragme (2a ; 2b) est encastré entre la plaque support (10) et la tête de pompe (36a ; 36b).
  8. Pompe de dosage selon la revendication 7, dans laquelle est disposé, entre le diaphragme (24a ; 24b) et la plaque support (10), un élément de logement (34a ; 34b) qui présente un logement (56) pour le diaphragme (24a ; 24b) et dans laquelle, le diaphragme (24a ; 24b) est encastré entre la tête de pompe (36a ; 36b) et l'élément de logement (34a ; 34b).
  9. Pompe de dosage selon la revendication 8, dans laquelle l'élément de logement (34a ; 34b) recouvre complètement la plaque support (10) vers l'extérieur et est relié de manière étanche au carter (4).
  10. Pompe de dosage selon l'une des revendications 8 ou 9, dans laquelle le logement (56) du diaphragme (24a ; 24b) dans l'élément de logement (34a ; 34b) est placé à distance de la plaque support (10), et dans laquelle une chambre (58) est formée entre le diaphragme (24a ; 24b) et la plaque support (10).
  11. Pompe de dosage selon la revendication 8, dans laquelle la chambre (58) est munie d'un orifice de décharge (60).
EP03010887A 2003-05-15 2003-05-15 Pompe de dosage Expired - Lifetime EP1477675B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50304219T DE50304219D1 (de) 2003-05-15 2003-05-15 Dosierpumpe
EP03010887A EP1477675B1 (fr) 2003-05-15 2003-05-15 Pompe de dosage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03010887A EP1477675B1 (fr) 2003-05-15 2003-05-15 Pompe de dosage

Publications (2)

Publication Number Publication Date
EP1477675A1 EP1477675A1 (fr) 2004-11-17
EP1477675B1 true EP1477675B1 (fr) 2006-07-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03010887A Expired - Lifetime EP1477675B1 (fr) 2003-05-15 2003-05-15 Pompe de dosage

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Country Link
EP (1) EP1477675B1 (fr)
DE (1) DE50304219D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018008037B4 (de) * 2018-10-11 2020-09-10 Psg Germany Gmbh Spannvorrichtung für eine Vorrichtung zur Förderung von Fluid und Vorrichtung zur Förderung von Fluid

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2173462A5 (fr) * 1972-02-25 1973-10-05 Huot De Longchamp Jacque
DE3202069C2 (de) * 1982-01-23 1984-05-03 Chemie Und Filter Gmbh, Verfahrenstechnik Kg, 6900 Heidelberg "Membranpumpe, insbesondere Dosierpumpe"
US5676531A (en) * 1996-03-21 1997-10-14 Pulsafeeder, Inc. Autoclavable pump head assembly
DE29709831U1 (de) * 1997-06-06 1997-08-14 Wolfgang Eichler GmbH & Co KG, 76327 Pfinztal Dosierpumpe mit einem flanschartigen Zwischenstück zur Montage am Einsatzort

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EP1477675A1 (fr) 2004-11-17
DE50304219D1 (de) 2006-08-24

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