DE19631081C1 - Heavy-duty diaphragm with concentric grooves and ridges - Google Patents
Heavy-duty diaphragm with concentric grooves and ridgesInfo
- Publication number
- DE19631081C1 DE19631081C1 DE1996131081 DE19631081A DE19631081C1 DE 19631081 C1 DE19631081 C1 DE 19631081C1 DE 1996131081 DE1996131081 DE 1996131081 DE 19631081 A DE19631081 A DE 19631081A DE 19631081 C1 DE19631081 C1 DE 19631081C1
- Authority
- DE
- Germany
- Prior art keywords
- membrane
- grooves
- diaphragm
- ridges
- bulges
- 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 - Fee Related
Links
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims description 28
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims 2
- 239000012530 fluid Substances 0.000 abstract 1
- 230000003313 weakening effect Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- F04B43/0009—Special features
- F04B43/0054—Special features particularities of the flexible members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J3/00—Diaphragms; Bellows; Bellows pistons
- F16J3/02—Diaphragms
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Diaphragms And Bellows (AREA)
Abstract
Description
Es ist bekannt, daß Membranen, besonders wenn sie bei aggressivem Medium in Pumpen eingebaut sind, oft nicht lange halten. Bei Industriepumpen reißen oder brechen sie häufig und können Folgeschäden verursachen. Daher wird versucht, durch eine besondere Membranformgebung, bestimmte Werk stoffe, zum Beispiel Gummigemisch oder spezielle Stößel die Haltbarkeit zu vergrößern. Viele Membranen haben glatte Flächen und sind gewölbt. Durch die Betätigung des Stößels wird bei ihnen die Wölbung verringert beziehungsweise die Membrane abgeflacht, folglich wird auch mehr oder weniger der Membranquerschnitt beziehungsweise die Membranfläche verringert. Dabei wird das Material gleichzeitig gebogen und gestaucht.It is known that membranes, especially when they are aggressive medium are installed in pumps, often not for long hold. With industrial pumps, they often tear or break and can cause consequential damage. Therefore it tries through a special membrane shape, certain movement substances, for example rubber mixture or special pestles Increase durability. Many membranes have smooth ones Surfaces and are arched. By operating the plunger the curvature is reduced or the Membrane flattened, consequently more or less the membrane cross-section or the membrane area decreased. The material is bent at the same time and compressed.
Der im Patentanspruch angegebenen Erfindung liegt das Problem zugrunde, Membranen haltbarer zu machen.The invention specified in the claim is Underlying the problem of making membranes more durable.
Dieses Problem wird durch die im Patentanspruch aufgeführ ten Merkmale einer besonderen Formgebung der Membrane zur Verringerung der Werkstoffbeanspruchung gelöst.This problem is outlined in the claim Characteristics of a special shape of the membrane Reduction in material stress solved.
Die mit der Erfindung erzielte vorteilhafte Wirkung kommt dadurch zustande, daß die Membrane zwar gebogen, aber bedeutend weniger gestaucht wird. Durch die Reduzierung dieses einen Beanspruchungsmerkmals erhält die Membrane eine große Haltbarkeit.The advantageous effect achieved with the invention comes because the membrane is bent, but is significantly less compressed. By reducing the membrane receives this one stress characteristic great durability.
Bei der Betätigung des Stößels wird die Membranwölbung zwar auch abgeflacht, die Stauchung jedoch von den auf der Oberseite vorhandenen kreisrunden Rillen weitgehend kompen siert. Jede dieser kreisrunden Rillen hat einen anderen Radius, dabei jedoch haben alle den Mittelpunkt der Membrane. Diese Rillen haben Kanten und werden beim Betätigen der Membrane beidseitig zusammengedrückt und somit verkleinert, wodurch eine Kompensation erfolgt. Gleichzeitig treten auf der dem Medium zugewandten Membran seite unterhalb dieser Rillen, ähnlich wie bei Unterwellen, die schwachen Wölbungen hervor. Sie lassen sich jedoch nicht wie die Wellen bei wellenförmigen Membranen zuein ander drücken, weil die durch die Rillen entstandenen kantigen quasi Oberwellen im Profil stärker ausgelegt sind. Es entstehen also wie bei wellenförmigen Membranen auf der Unterseite keine tieferen Wellentäler oder quasi kreis förmige Rillen. Bei entsprechendem Medium ist dieses zum Vorteil. Beim Betätigen wird die Membranoberseite stärker, die Membranunterseite weniger stark verändert. Der dicke Querschnitt der kantigen quasi Oberwellen gibt der Membrane zwar Stabilität, jedoch darf die Membranstärke auf der Unterseite bei den ringförmigen Wölbungen nicht zu gering sein, damit die Membrane nicht instabil wird. Der äußere abgewinkelte ringförmige Rand dient zur Auflage. Durch diese Form wird die Membrane gut biegsam, behält aber ihre Gesamtstabilität.When the tappet is actuated, the diaphragm bulges Although also flattened, the compression of those on the To a large extent compensate for the existing circular grooves on the top siert. Each of these circular grooves has a different one Radius, but all have the center of the Membrane. These grooves have edges and are used in the Pressing the diaphragm on both sides and thus reduced in size, whereby compensation takes place. At the same time occur on the membrane facing the medium side below these grooves, similar to sub-waves, the faint bulges. However, you can not like the waves in wavy membranes press the other one because the grooves angular quasi-harmonics are designed stronger in profile. As with wavy membranes, it is created on the Underside no deeper troughs or quasi circle shaped grooves. With the appropriate medium, this is for Advantage. When pressed, the top of the membrane becomes stronger, the underside of the membrane changed less. The thick Cross section of the angular quasi harmonics gives the membrane Although stability, the membrane thickness on the The underside of the ring-shaped arches is not too small so that the membrane does not become unstable. The outer angled ring-shaped edge serves as a support. By this shape makes the membrane flexible, but retains its shape Overall stability.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird folgend näher beschrieben.An embodiment of the invention is in the drawing shown and will be described in more detail below.
Es zeigenShow it
Fig. 1 einen Querschnitt der Seitenansicht mit dem Stößel befestigungsloch 1, den oberseitigen kantigen Rillen 2, dem quasi Oberwellen ähnelnden aber kantigen Teilbereich 3, den unterseitigen ringför migen Wölbungen 4, dem Auflageteil 5; Figure 1 is a cross section of the side view with the tappet mounting hole 1 , the top-sided edged grooves 2 , the quasi-similar but edgy portion 3 , the underside ringför shaped curvatures 4 , the support part 5 .
Fig. 2 eine Draufsicht. Fig. 2 is a plan view.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1996131081 DE19631081C1 (en) | 1996-08-01 | 1996-08-01 | Heavy-duty diaphragm with concentric grooves and ridges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1996131081 DE19631081C1 (en) | 1996-08-01 | 1996-08-01 | Heavy-duty diaphragm with concentric grooves and ridges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19631081C1 true DE19631081C1 (en) | 1997-10-09 |
Family
ID=7801500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1996131081 Expired - Fee Related DE19631081C1 (en) | 1996-08-01 | 1996-08-01 | Heavy-duty diaphragm with concentric grooves and ridges |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19631081C1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19901893C1 (en) * | 1999-01-19 | 2000-06-15 | Ott Kg Lewa | Hydraulically-driven membrane pump has membrane with concentric waves preventing localized bulging and damage, whilst assuring maximum volumetric efficiency |
| WO2000049293A1 (en) | 1999-02-16 | 2000-08-24 | Knf Flodos Ag | Diaphragm pump |
| DE20215127U1 (en) | 2002-10-01 | 2002-12-05 | FESTO AG & Co., 73734 Esslingen | membrane actuator |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE875744C (en) * | 1948-12-11 | 1953-05-07 | Henschel & Sohn G M B H | Sealing membrane for bearing lubrication chambers |
| DE2406134A1 (en) * | 1973-02-12 | 1974-09-05 | Gates Rubber Co | FLEXIBLE SHELL-SHAPED MEMBRANE |
| DE2361261A1 (en) * | 1973-12-08 | 1975-06-12 | Daimler Benz Ag | Roll diaphragm for pressure accumulators - has hemispherical shape with ring-shaped reinforcement at edges |
| US4238992A (en) * | 1978-10-30 | 1980-12-16 | Wilden Pump & Engineering Co. | Pump diaphragm |
| DE4323856A1 (en) * | 1992-07-24 | 1994-01-27 | Huber+Suhner Ag | Fibre-reinforced membrane for separating two chambers with different pressures - has comparatively high breaking tension with raised modulus to reduce proportion of fibrous material. |
| DE4312538A1 (en) * | 1993-04-17 | 1994-10-20 | Continental Ag | Pot or roll membrane |
| DE29505021U1 (en) * | 1995-03-24 | 1995-05-18 | Knf-Neuberger Gmbh, 79112 Freiburg | Diaphragm pump with a shaped membrane |
| JPH07167299A (en) * | 1993-12-16 | 1995-07-04 | Kazuo Sugimura | Vessel for wave pattern type diaphragm |
-
1996
- 1996-08-01 DE DE1996131081 patent/DE19631081C1/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE875744C (en) * | 1948-12-11 | 1953-05-07 | Henschel & Sohn G M B H | Sealing membrane for bearing lubrication chambers |
| DE2406134A1 (en) * | 1973-02-12 | 1974-09-05 | Gates Rubber Co | FLEXIBLE SHELL-SHAPED MEMBRANE |
| DE2361261A1 (en) * | 1973-12-08 | 1975-06-12 | Daimler Benz Ag | Roll diaphragm for pressure accumulators - has hemispherical shape with ring-shaped reinforcement at edges |
| US4238992A (en) * | 1978-10-30 | 1980-12-16 | Wilden Pump & Engineering Co. | Pump diaphragm |
| EP0010943B1 (en) * | 1978-10-30 | 1984-09-05 | Jr. Alan Dean Tuck | Fluid pressure-driven diaphragm pump |
| DE4323856A1 (en) * | 1992-07-24 | 1994-01-27 | Huber+Suhner Ag | Fibre-reinforced membrane for separating two chambers with different pressures - has comparatively high breaking tension with raised modulus to reduce proportion of fibrous material. |
| DE4312538A1 (en) * | 1993-04-17 | 1994-10-20 | Continental Ag | Pot or roll membrane |
| JPH07167299A (en) * | 1993-12-16 | 1995-07-04 | Kazuo Sugimura | Vessel for wave pattern type diaphragm |
| DE29505021U1 (en) * | 1995-03-24 | 1995-05-18 | Knf-Neuberger Gmbh, 79112 Freiburg | Diaphragm pump with a shaped membrane |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19901893C1 (en) * | 1999-01-19 | 2000-06-15 | Ott Kg Lewa | Hydraulically-driven membrane pump has membrane with concentric waves preventing localized bulging and damage, whilst assuring maximum volumetric efficiency |
| WO2000049293A1 (en) | 1999-02-16 | 2000-08-24 | Knf Flodos Ag | Diaphragm pump |
| DE19906317C1 (en) * | 1999-02-16 | 2000-10-19 | Knf Flodos Ag Sursee | Diaphragm pump |
| JP2002537520A (en) * | 1999-02-16 | 2002-11-05 | カー エヌ エフ フロードス アクチエンゲゼルシャフト | Diaphragm pump |
| DE20215127U1 (en) | 2002-10-01 | 2002-12-05 | FESTO AG & Co., 73734 Esslingen | membrane actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8100 | Publication of the examined application without publication of unexamined application | ||
| D1 | Grant (no unexamined application published) patent law 81 | ||
| 8322 | Nonbinding interest in granting licenses declared | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |