EP2726739B1 - Diaphragm for conveying media - Google Patents
Diaphragm for conveying media Download PDFInfo
- Publication number
- EP2726739B1 EP2726739B1 EP12729121.9A EP12729121A EP2726739B1 EP 2726739 B1 EP2726739 B1 EP 2726739B1 EP 12729121 A EP12729121 A EP 12729121A EP 2726739 B1 EP2726739 B1 EP 2726739B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- diaphragm
- working
- support
- diaphragm pump
- supporting
- 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
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 239000011324 bead Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 230000008961 swelling Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 241000722921 Tulipa gesneriana Species 0.000 claims 4
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 239000012528 membrane Substances 0.000 description 47
- 239000000463 material Substances 0.000 description 11
- 238000005452 bending Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 3
- 238000004049 embossing Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- 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
Definitions
- the membrane 14 nestles during the entire lifting movement by the armature 10 to the support plate 18 at.
- the stabilizing effect is thus achieved in every phase of the movement.
- the edge 22 of the working membrane 14 is made reinforced and surrounds a recess 24th
- FIG. 2 shows the working diaphragm 14, which is received by the undercut 16 fixed to the anchor head 12 of the armature 10, in a built-in between a housing part 31 and an intermediate plate 30 state 28.
- the support disc 18 is received.
- the armature 10 is guided through an opening 51 in the housing part 31.
- the housing part 31 further has a trough-shaped recess 52, which provides sufficient space for receiving the support plate 18 and a cavity 50.
- the underside 36 of the working diaphragm 14 rests on a bearing surface 38 of the housing part 31. Over the working membrane 14, the intermediate plate 30 is arranged.
- FIG. 5 shows a further embodiment of the support cuff 54 in a perspective view from below.
- the support cuff 54 has a bearing surface 64, which is bent in the region of the edge 66 towards the bottom.
- the collar 62 is formed in the center of the support surface 64 by strong bending of the material.
- three reinforcing embossings 56 designed as oval grooves are arranged in the embodiment variant shown here.
- a different number and / or different shape of the reinforcement embossings 56 may be provided.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Diaphragms And Bellows (AREA)
Description
Bei Förderaggregaten, wie zum Beispiel Membranpumpen zur Förderung von Betriebsmedien werden Arbeitsmembranen vorwiegend aus Elastomermaterialien eingesetzt. Mit diesen Förderaggregaten, insbesondere Membranpumpen, können beispielsweise Betriebs-/Hilfsstoffe oder Betriebsmedien, so zum Beispiel Reduktionsmittel wie eine wässrige Harnstoff-Lösung, wie sie in Abgasnachbehandlungssystemen zur Reduzierung von NOx-Bestandteilen des Abgases eingesetzt werden, gefördert werden. Der Einsatz von Arbeitsmembranen, die vorwiegend aus Elastomermaterialien gefertigt werden, ist jedoch beschränkt auf eher niedrige Druckbereiche bis ca. 6 bar. Grundsätzlich haben solche Arbeitsmembranen den Zweck, durch angekoppelte mechanische Bauteile, die mit einem Aktor verbunden sind, eine oszillierende, ständig wechselnde Unterdruckerzeugung für das Ansaugen bzw. eine Druckerzeugung für ein Fördervolumen zu ermöglichen.In delivery systems, such as diaphragm pumps for conveying operating media working membranes are mainly used made of elastomeric materials. With these delivery units, in particular diaphragm pumps, for example, operating / auxiliary materials or operating media, such as reducing agents such as an aqueous urea solution, such as those used in exhaust aftertreatment systems for reducing NO x components of the exhaust gas can be promoted. The use of working membranes, which are mainly made of elastomeric materials, but is limited to rather low pressure ranges up to 6 bar. Basically, such working membranes have the purpose, by coupled mechanical components, which are connected to an actuator, to enable an oscillating, constantly changing vacuum generation for suction or pressure generation for a delivery volume.
Die dazu eingesetzten Arbeitsmembranen werden in der Regel durch eine Zwischenplatte und ein Gehäuse arretiert und sind nach außen abgedichtet.The working membranes used for this purpose are usually locked by an intermediate plate and a housing and are sealed to the outside.
Aus
Erfindungsgemäß wird vorgeschlagen, an einer Arbeitsmembran zum volumetrischen Fördern von fluiden Medien, die im Wesentlichen scheibenförmig ausgebildet ist, den Bereich, in dem die Membran sich elastisch verformt, und die höchsten mechanischen Belastungen beim Förderhub auftreten, mit einem Unterstützungselement zu stabilisieren.According to the invention, it is proposed to stabilize with a support element on a working membrane for the volumetric delivery of fluid media, which is essentially disk-shaped, the region in which the membrane elastically deforms, and the highest mechanical loads occur during the delivery stroke.
Mit dem Unterstützungselement können bereits eingesetzte Arbeitsmembranen gezielt lokal verstärkt werden und sind somit für höhere Betriebsdrücke geeignet. Durch die Verstärkung wird eine insbesondere bei höheren Betriebsdrücken auftretende ballonartige Verformung der Arbeitsmembran vermieden. Eine derartige Verformung würde das Volumen eines von der Arbeitsmembran begrenzten Elementraumes verändern und damit die Fördermenge beeinflussen. Des Weiteren wird die Lebensdauer der Arbeitsmembran durch den Einsatz eines Unterstützungselements, entscheidend verlängert.With the support element already used working membranes can be selectively strengthened locally and are thus suitable for higher operating pressures. The reinforcement avoids a balloon-like deformation of the working diaphragm, which occurs in particular at higher operating pressures. Such a deformation would change the volume of an element space bounded by the working diaphragm and thus influence the flow rate. Furthermore, the lifetime of the working membrane is significantly extended by the use of a support element.
Die Stabilität der Arbeitsmembran kann weiter verbessert werden, in dem diese zusätzlich durch Metalleinsätze, Fasern und/oder Gewebeeinsätze verstärkt wird.The stability of the working membrane can be further improved by additionally reinforcing it with metal inserts, fibers and / or fabric inserts.
Das erfindungsgemäße Unterstützungselement ist in einer Ausführungsform als Unterstützungsscheibe ausgeführt.
In weiteren Ausführungsvarianten der Erfindung ist das Unterstützungselement pilz- oder tulpenförmig ausgeführt.The support element according to the invention is designed in one embodiment as a support disk.
In further embodiments of the invention, the support element is mushroom or tulip-shaped.
In vorteilhafter Weise kann durch die Unterstützungsscheibe bzw. durch Einsatz einer Unterstützungstulpe bei Arbeitsmembranen, insbesondere unterhalb des elastischen Bereiches der Membran ein Verstärkungsteil eingesetzt werden, welches der Stabilisierung dient. Die Unterstützungsscheibe bzw. eine Unterstützungstulpe kann aus metallischen Materialien wie Blechen, Edelstahl oder auch aus Kunststoffen, so zum Beispiel aus Thermoplasten, gefertigt werden. Bei der Hubbewegung der Arbeitsmembran wird ein Elementraum bei zunehmendem Druck nicht vergrößert und das Volumen des Elementraumes bleibt gleich, da die Unterstützungsscheibe eine Verformung des weichen Elastomerteiles verhindert.
Die erfindungsgemäß vorgeschlagene Membran, abgestützt durch ein Unterstützungselement, beispielsweise eine Unterstützungsscheibe oder eine Unterstützungstulpe, wird zwischen zwei Bauteilen, einem Gehäuseteil und einer Zwischenplatte, eingespannt. Eine Abdichtung der Arbeitsmembran kann durch einen im Randbereich der Arbeitsmembran ausgebildeten radialen Dichtwulst erreicht werden. Um bei erhöhten Temperaturen eine Ausdehnung des Elastomermaterials zu ermöglichen, weist die erfindungsgemäß vorgeschlagene, durch ein Unterstützungselement abgestützte Arbeitsmembran einen Quellraum auf. Dieser Quellraum wird zwischen einem Dichtwulst und einer Trennrippe vorgesehen und ermöglicht ein Quellen des Elastomerwerkstoffes bei Temperaturanstieg und Medienaufnahme.
Darüber hinaus ist in vorteilhafter Weise im Elementraum oberhalb der Membran, d.h. auf deren Oberseite ein zusätzliches Volumen vorgesehen, um auch hier ein Ausdehnungsraum für das Material der Arbeitsmembran zu gewährleisten.
Das Unterstützungselement, beispielsweise in Gestalt einer Unterstützungsscheibe oder einer Unterstützungstulpe, kann aufgepresst, aufgeschraubt, aufgeschweißt oder auch aufgeklebt werden. Das Unterstützungselement wird von unten her auf einen Anker oder Kolben, auf dessen Oberseite sich die Membran befindet, aufgepresst und muss somit nicht mit in den Gummiwerkstoff eingespritzt bzw. im Elementraum angeordnet werden. Dadurch ist ausgeschlossen, dass bei einer sonst vorgesehenen Anordnung im Elementraum eine Dichtungsunterbrechung auftritt, die zwangsweise zu einer Leckage bzw. einer Schädigung führt. Der Anker oder Kolben ist Teil eines Aktuators, mit dem eine Hubbewegung erzeugt und auf die Arbeitsmembran übertragen wird.
Bevorzugt wird der Rand der Unterstützungsscheibe abgerundet, wobei der Radius der Rundung so gewählt ist, dass die Arbeitsmembran bei einer Hubbewegung durch den Anker oder Kolben an dem Radius abgerollt wird.
In einer vorteilhaften Ausführungsvariante lässt sich das die Membran an der Unterseite abstützende Unterstützungselement als Unterstützungstulpe fertigen. Dieses Bauteil kann aus metallischem Werkstoff, zum Beispiel im Wege der Stanzbiegetechnik hergestellt werden. Der Vorteil der Unterstützungstulpe ist darin zu erblicken, dass diese eine wesentliche Verbesserung der Montage ermöglicht, da eine flexiblere Wandaufweitung möglich ist. Werden im Wandbereich der Unterstützungstulpe zusätzliche Schlitzungen vorgesehen, können die Montagekräfte variiert werden. Es besteht des Weiteren die Möglichkeit, an der Innenseite des tulpenförmig ausgebildeten Unterstützungselementes zusätzliche Prägungen im Radienbereich vorzusehen und so eine zusätzliche Verstärkung der den Druck aufnehmenden Flächen zu erreichen.Advantageously, a reinforcing member can be used by the support disk or by using a support cuff in working membranes, in particular below the elastic region of the membrane, which serves to stabilize. The support disc or a support cuff can be made of metallic materials such as sheet metal, stainless steel or even of plastics, such as thermoplastics. In the stroke movement of the working diaphragm, an element space is not increased with increasing pressure and the volume of the Element space remains the same because the support disc prevents deformation of the soft elastomer part.
The membrane proposed according to the invention, supported by a support element, for example a support disk or a support cuff, is clamped between two components, a housing part and an intermediate plate. A sealing of the working membrane can be achieved by a trained in the edge region of the working diaphragm radial sealing bead. In order to permit expansion of the elastomer material at elevated temperatures, the working membrane proposed by the invention and supported by a support element has a source space. This source space is provided between a sealing bead and a barrier rib and allows swelling of the elastomer material with temperature rise and media absorption.
In addition, an additional volume is advantageously provided in the element space above the membrane, ie on its upper side, in order to ensure an expansion space for the material of the working membrane here as well.
The support element, for example in the form of a support disc or a support cuff, can be pressed on, screwed on, welded on or also glued. The support element is pressed from below onto an armature or piston, on the upper side of which the membrane is located, and thus does not have to be injected into the rubber material or arranged in the element space. This prevents the occurrence of a seal interruption in an otherwise provided arrangement in the element space, which forcibly leads to leakage or damage. The armature or piston is part of an actuator with which a lifting movement is generated and transmitted to the working diaphragm.
Preferably, the edge of the support disc is rounded, wherein the radius of the rounding is selected so that the working diaphragm is unrolled at a stroke by the armature or piston at the radius.
In an advantageous embodiment variant, the support element supporting the membrane on the underside can be produced as a support cuff. This component can be made of metallic material, for example by means of stamping and bending technology. The advantage of the support cuff is the fact that this one substantial improvement of the assembly allows, as a more flexible wall widening is possible. If additional slits are provided in the wall area of the support cuff, the assembly forces can be varied. There is also the possibility of providing additional embossments in the radius region on the inside of the tulip-shaped support element and thus achieving additional reinforcement of the surfaces receiving the pressure.
Die erfindungsgemäß vorgeschlagene Arbeitsmembran zeichnet sich insbesondere dadurch aus, dass diese für Drücke ≥ 6 bar einsetzbar ist und insbesondere bei Anwendungen im Automobilbereich eine lange Lebensdauer aufweist. Es kann eine volumetrische Förderung erreicht werden, so dass ein Verzicht auf einen Drucksensor möglich ist. Durch die von einem Unterstützungselement, beispielsweise einer Unterstützungsscheibe oder einer Unterstützungstulpe abgestützte Arbeitsmembran, lässt sich ein temperaturunabhängiges Förderverhalten ohne die beschriebenen Balloneffekte, insbesondere bei hohen Temperaturen und hohen Drücken erreichen.The working diaphragm proposed according to the invention is characterized in particular by the fact that it can be used for pressures ≥ 6 bar and in particular has a long service life in applications in the automotive sector. It can be achieved volumetric delivery, so that a waiver of a pressure sensor is possible. By supported by a support element, such as a support disc or a support cuff working membrane, a temperature-independent delivery behavior can be achieved without the described balloon effects, especially at high temperatures and high pressures.
Durch den an der Unterstützungsscheibe vorgesehenen Abrollradius schmiegt sich die Membran während der gesamten Hubbewegung durch den Anker an die Unterstützungsscheibe an. Die Stabilisierungswirkung wird so in jeder Phase der Bewegung erzielt.Due to the rolling radius provided on the support disk, the membrane clings to the support disk during the entire stroke movement through the armature. The stabilizing effect is thus achieved in every phase of the movement.
Zusätzlich lässt sich die Arbeitsmembran durch das Einbringen von Metalleinsätzen, Fasern und/oder von Gewebeeinsetzen verstärken. Dies verbessert die Druckbeständigkeit der Membran weiter und verlängert die Lebensdauer der Arbeitsmembran erheblich.In addition, the working membrane can be reinforced by the introduction of metal inserts, fibers and / or tissue insertion. This further improves the pressure resistance of the membrane and significantly prolongs the life of the working membrane.
Die Fördervolumina, die mit der erfindungsgemäß vorgeschlagenen Arbeitsmembran bewältigt werden können, bleiben gleich, d.h. sind unabhängig von einer Quellung des Membranmaterials und Temperatureinflüssen. Ebenfalls wird die Abhängigkeit des Fördervolumens vom Druck verringert.The delivery volumes that can be handled with the working membrane proposed by the invention remain the same, i. are independent of swelling of the membrane material and temperature influences. Also, the dependence of the delivery volume is reduced by the pressure.
Anhand der Zeichnung wird die Erfindung nachstehend eingehender beschrieben.With reference to the drawing, the invention will be described below in more detail.
Es zeigt:
- Figur 1
- eine Arbeitsmembran, abgestützt durch einen Anker aufgenommenes Unterstützungselement - hier in Scheibenform,
- Figur 2
- die von einem Stützelement abgestützte Arbeitsmembran im eingebauten Zustand zwischen einem Gehäuse und einer Zwischenplatte,
- Figur 3
- eine Arbeitsmembran, abgestützt durch eine Unterstützungstulpe,
- Figur 4
- eine perspektivische Ansicht der mit Prägungen und Schlitzungen versehenen Unterstützungstulpe von der Unterseite her,
- Figur 5
- eine perspektivische Widergabe einer mit Prägungen versehenen Unterstützungstulpe von der Unterseite her und
- Figur 6
- Kennlinien für Durchfluss von konventionellen Membranen bzw. volumetrisch fördernden Membranen.
- FIG. 1
- a working membrane, supported by an anchor received supporting element - here in disc shape,
- FIG. 2
- the working membrane supported by a supporting element in the installed state between a housing and an intermediate plate,
- FIG. 3
- a working membrane, supported by a support cuff,
- FIG. 4
- a perspective view of the provided with embossments and slits support cuff from the bottom,
- FIG. 5
- a perspective reproduction of an embossed support cuff from the bottom and
- FIG. 6
- Characteristics for flow of conventional membranes or volumetric membranes.
In
In dieser und in den weiteren Ausführungsformen lässt sich die Arbeitsmembran 14 zusätzlich durch das Einbringen von Metalleinsätzen, Fasern und/oder von Gewebeeinsetzen verstärken. Dies verbessert die Druckbeständigkeit der Arbeitsmembran 14 weiter und verlängert die Lebensdauer der Arbeitsmembran 14 erheblich.In this and other embodiments, the working
In
In
In
Die Unterstützungstulpe wird bevorzugt durch eine Stanzbiegetechnik ausgebildet. Dies erlaubt es die Wandaufweitung des Kragens 62 flexibel einzustellen.
Die Einpresskraft wird bevorzugt durch das Anordnen von Entlastungsschlitzen 58 im Übergangsbereich vom Kragen 62 in die Auflagefläche 64 und/oder im Kragen 62 weiter variiert. In der in
The support cuff is preferably formed by a stamping and bending technique. This allows the wall widening of the
The insertion force is preferably further varied by arranging
In
In
Eine mit der erfindungsgemäßen Arbeitsmembran ausgerüstete Membranpumpe eignet sich insbesondere als Förderaggregat für Betriebs-/Hilfsstoffe oder Betriebsmedien. Durch den nahezu druckunabhängigen und temperaturunabhängigen Durchfluss kann dabei eine aufwändige Messung des Durchflusses und/oder des Drucks entfallen. Ein solches Förderaggregat ist durch den stabilen Durchfluss auch für Anwendungen in der Medizintechnik geeignet.A membrane pump equipped with the working diaphragm according to the invention is particularly suitable as a delivery unit for operating / auxiliary materials or operating media. Due to the almost pressure-independent and temperature-independent flow, a complex measurement of the flow and / or the pressure can be omitted. Such Thanks to its stable flow, the delivery unit is also suitable for applications in medical technology.
Claims (10)
- Diaphragm pump for the volumetric delivery of a fluid, having a working diaphragm (14) for the volumetric delivery of the fluid, which diaphragm, in the installed state (28), is held between components (30, 31) and is connected to an actuator (10, 12) for executing delivery strokes, wherein the working diaphragm (14) is stabilized in the elastic region (26) by a supporting element (18, 54), wherein the working diaphragm (14) has a sealing bead (44),
characterized in that
a swelling space (40) is formed between the working diaphragm (14) and a component which is formed as an intermediate plate (30), and wherein the swelling space is provided between the sealing bead (44) and a separating rib (46) which is arranged on the intermediate plate (30). - Diaphragm pump (14) according to Claim 1, characterized in that
the working diaphragm (14) is reinforced with metal inserts, fibres and/or fabric inserts. - Diaphragm pump (14) according to Claim 1 or 2, characterized in that
an additional volume is provided in an element space (32) which is above the working diaphragm (14). - Diaphragm pump (14) according to one of Claims 1 to 3,
characterized in that
the supporting element (18, 54) is held on an actuator armature (10) by way of pressing, welding, adhesive bonding and/or screwing. - Diaphragm pump (14) according to one of Claims 1 to 4,
characterized in that
the supporting element (18, 54) is designed as a supporting disc (18). - Diaphragm pump (14) according to Claim 5, characterized in that
the supporting disc (18) has a rolling radius (48) at the edge. - Diaphragm pump (14) according to one of Claims 1 to 6,
characterized in that
the supporting element (18, 54) is designed as a supporting tulip (54). - Diaphragm pump (14) according to Claim 7, characterized in that
the supporting tulip (54) has at least one reinforcing embossment (56). - Diaphragm pump (14) according to Claim 7 or 8, characterized in that
the supporting tulip (54) has at least one relief slot (58). - Diaphragm pump (14) according to one of Claims 7 to 9,
characterized in that
the supporting tulip (54) is produced from spring plate or from a thermoplastic.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011078499A DE102011078499A1 (en) | 2011-07-01 | 2011-07-01 | Membrane for conveying media |
PCT/EP2012/062016 WO2013004516A1 (en) | 2011-07-01 | 2012-06-21 | Diaphragm for conveying media |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2726739A1 EP2726739A1 (en) | 2014-05-07 |
EP2726739B1 true EP2726739B1 (en) | 2017-08-09 |
Family
ID=46331315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12729121.9A Active EP2726739B1 (en) | 2011-07-01 | 2012-06-21 | Diaphragm for conveying media |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2726739B1 (en) |
CN (1) | CN103688055B (en) |
BR (1) | BR112013033838A2 (en) |
DE (1) | DE102011078499A1 (en) |
RU (1) | RU2620894C2 (en) |
WO (1) | WO2013004516A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013212785A1 (en) | 2013-07-01 | 2015-01-08 | Robert Bosch Gmbh | Device for pressure compensation in delivery units for exhaust aftertreatment systems |
CN107246376A (en) * | 2017-07-12 | 2017-10-13 | 浙江卡韦德新能源科技有限公司 | Diesel motor exhaust handles the diaphragm assembly of urea pump |
DE102020111670A1 (en) | 2020-04-29 | 2021-11-04 | Prominent Gmbh | DOSING PUMP WITH HYGIENE-COMPLIANT CLAMPING ZONE |
DE102020125567A1 (en) * | 2020-09-30 | 2022-03-31 | Ulman Dichtungstechnik Gmbh | Composite diaphragm for diaphragm pumps |
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US2295774A (en) * | 1941-02-26 | 1942-09-15 | Corydon Jeff | Pump valve |
DE854464C (en) * | 1950-06-11 | 1952-11-04 | Friedrich Dr Goetz | Diaphragm pump |
GB2140876B (en) * | 1983-06-02 | 1986-10-22 | Pienne Spa | Pump for supplying fuel to the carburettor of an internal combustion engine |
DE4119228C2 (en) | 1991-06-14 | 1995-04-13 | Knf Neuberger Gmbh | Diaphragm pump |
FR2697589B1 (en) * | 1992-11-04 | 1994-12-23 | Milton Roy Dosapro | Diaphragm metering pump with mechanical actuation. |
DE29620094U1 (en) * | 1996-11-20 | 1998-03-26 | Knf-Neuberger Gmbh, 79112 Freiburg | Diaphragm pump |
JP4114639B2 (en) * | 2004-06-01 | 2008-07-09 | 株式会社豊田自動織機 | Diaphragm type pump |
CN200975331Y (en) * | 2006-06-13 | 2007-11-14 | 上海化工研究院 | Mechanically-actuated diaphram pump |
DE102007005736A1 (en) * | 2007-01-31 | 2008-08-14 | Gardner Denver Thomas Gmbh | Displacement pump for delivering a fluid with automatic adjustment to the compressibility of this fluid |
ATE480712T1 (en) * | 2007-11-07 | 2010-09-15 | Idromeccanica Bertolini S P A | PUMP |
CN101251101A (en) * | 2008-03-10 | 2008-08-27 | 李建松 | Pressure regulating type stabilivolt membrane pump |
-
2011
- 2011-07-01 DE DE102011078499A patent/DE102011078499A1/en not_active Withdrawn
-
2012
- 2012-06-21 WO PCT/EP2012/062016 patent/WO2013004516A1/en active Application Filing
- 2012-06-21 RU RU2014103287A patent/RU2620894C2/en active
- 2012-06-21 EP EP12729121.9A patent/EP2726739B1/en active Active
- 2012-06-21 CN CN201280032790.0A patent/CN103688055B/en active Active
- 2012-06-21 BR BR112013033838A patent/BR112013033838A2/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
EP2726739A1 (en) | 2014-05-07 |
BR112013033838A2 (en) | 2017-02-21 |
CN103688055B (en) | 2017-02-15 |
CN103688055A (en) | 2014-03-26 |
RU2620894C2 (en) | 2017-05-30 |
WO2013004516A1 (en) | 2013-01-10 |
RU2014103287A (en) | 2017-01-10 |
DE102011078499A1 (en) | 2013-01-03 |
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