DE2843860A1 - BUTTERFLY VALVE WITH CENTRALLY BEARING FLAP DISC - Google Patents
BUTTERFLY VALVE WITH CENTRALLY BEARING FLAP DISCInfo
- Publication number
- DE2843860A1 DE2843860A1 DE19782843860 DE2843860A DE2843860A1 DE 2843860 A1 DE2843860 A1 DE 2843860A1 DE 19782843860 DE19782843860 DE 19782843860 DE 2843860 A DE2843860 A DE 2843860A DE 2843860 A1 DE2843860 A1 DE 2843860A1
- Authority
- DE
- Germany
- Prior art keywords
- valve disc
- valve
- sealing
- butterfly valve
- sealing surface
- 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.)
- Ceased
Links
Classifications
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
- F16K1/2265—Shaping or arrangements of the sealing the sealing being arranged on the valve seat with a channel- or U-shaped seal covering a central body portion
Description
Absperrklappe mit zentrisch gelagerter KlappenscheibeButterfly valve with centrally mounted valve disc
Gegenstand der Erfindung ist eine Absperrklappe mit zentrisch gelagerter Klappenscheibe und einer im Klappengehäuse angeordneten, mit der Klappenscheibe zur Herstellung der Dichtfunktion zusammenwirkenden Elastomerauskleidung.The subject of the invention is a butterfly valve with a centrally mounted valve disc and a valve arranged in the valve housing, with the valve disc to produce the sealing function interacting elastomer lining.
Bei Klappenventilen mit Elastomerauskleidung, wie sie beispielsweise durch die DE-PSn 12 51 117, 12 90 395 und 15 50 499 vorbekannt sind, taucht die Klappenscheibe, deren Außendurchmesser größer ist als der Innendurchmesser der elastischen Auskleidung, zur Herstellung der Dichtfunktion mehr oder weniger tief in die Auskleidung ein. Dabei wird eine gewisse Menge des Auskleidungsmaterials verdrängt, das sich nun um die Klappenscheibe legt. Das verdrängte bzw. verpreßte Elastomer erzeugt beim Öffnen der Klappenscheibe ein Haltemoment, das größer ist als das Moment beim Schließvorgang.For flap valves with an elastomer lining, such as those used for example previously known from DE-PS 12 51 117, 12 90 395 and 15 50 499 , the valve disc, the outer diameter of which is larger than the inner diameter of the elastic lining, is immersed for manufacture the sealing function more or less deeply into the lining. A certain amount of the lining material is displaced now lies around the valve disc. That suppressed or compressed When the valve disc opens, elastomer generates a holding torque that is greater than the torque when it closes.
Bei zentrisch gelagerten Absperrklappen stellen die Bereiche der Wellendurchführungen problematische Stellen für die Abdichtung dar. Um Undichtigkeiten der geschlossenen Klappenscheibe an diesen Stellen zu vermeiden, wählte man oft den Ausweg, dort ein noch größeres Elastomervolumen zu verdrängen. Dies wurde dadurchIn the case of centrally mounted butterfly valves, the areas of the shaft penetrations represent problematic areas for sealing. In order to avoid leaks in the closed valve disc at these points, one often chose the way out, one more there to displace larger elastomer volume. This became through it
030015/059030015/059
erreicht, daß man im Wellenbereich an der Auskleidung und der Klappenscheibe Abflachungen anbrachte.achieved that one made flats in the shaft area on the lining and the valve disc.
Da die vorgespannte Elastomerauskleidung zur Abdichtung der Wellen allein nicht ausreichte, sah man sich oft gezwungen, die Wellen noch mit einer separaten Dichtung zu versehen. Hierbei war allerdings nicht zu vermeiden, daß das Durchflußmedium an die Wellen und teilweise auch an das Gehäuse gelangte. Für die Fälle, wo es sich um ein aggressives Durchflußmedium handelte, mußte daher durch die Wahl eines edlen Materials für Wellen und Gehäuse Sorge gegen einen eventuellen Angriff bzw. Zerstörung getragen werden.Since the pre-stressed elastomer lining alone was not sufficient to seal the shafts, one was often forced to use the Shafts still to be provided with a separate seal. In this case, however, it was not to be avoided that the flow medium was on the shafts and partly also to the housing. For those cases where it was an aggressive flow medium, Therefore I had to take care against possible attack or destruction by choosing a noble material for shafts and housings be worn.
Der Erfindung liegt die Aufgabe zugrunde, eine Absperrklappe der eingangs genannten Art zu schaffen, die bei geringen Öffnungs- und Schließmomenten eine gleichmäßige und gute Dichtwirkung am gesamten Umfang sicherstellt.The invention is based on the object of a butterfly valve of the type mentioned to create a uniform and good at low opening and closing torques Ensures sealing effect over the entire circumference.
Ausgehend von der Erkenntnis, daß für eine gleichmäßige Dichtheit der Durchgangsdichtung eine gleichmäßige Dichtkraft zwischen Klappenscheibe und Elastomerauskleidung am gesamten Umfang erforderlich ist, wird die gestellte Aufgabe erfindungsgemäß dadurch gelöst, daß die Dichtfläche der Klappenscheibe einenBased on the knowledge that a uniform sealing force between If the valve disc and elastomer lining are required over the entire circumference, the task at hand is achieved according to the invention solved in that the sealing surface of the valve disc a
030015/0596030015/0596
Ausschnitt aus einer Kugelfläche bildet, die zusammenwirkt mit einem auf der Innenseite der Elastomerauskleidung vorgesehenen Dtchto/vulst, der schmaler ist als die Dichtfläche der Klappenscheibe und der die Wellendurchtritte mit Abstand ringförmig umschließt, wobei die Dichtfläche der Klappenscheibe im Bereich der Wellendurchtritte eine das Ausmaß des ringförmigen Wulstes übersteigende Größe besitzt.Forms a section of a spherical surface which interacts with one provided on the inside of the elastomer lining Dtchto / vulst, which is narrower than the sealing surface of the valve disc and which surrounds the shaft openings at a distance in a ring shape, the sealing surface of the valve disc in the area of the shaft openings has a size in excess of the size of the annular bead.
Durch die Kugelform der Dichtfläche der Klappenscheibe wird bewirkt, daß am gesamten Umfang der Dichtwulst mit der gleichen spezifischen Dichtkraft anliegt, wobei durch die ringförmige Umschließung der Wellendurchtritte der Dichtwulst noch als Erstabdichtung für die Wellen dient. Da die Dichtfläche der .: Klappenscheibe den Dichtwulst zwar verformt, nicht aber in die Elastomerauskleidung eintaucht, wird eine Vergrößerung des Momentes beim öffnen oder Schließen der Klappenscheibe vermieden.The spherical shape of the sealing surface of the valve disc has the effect that the sealing bead with the same over the entire circumference specific sealing force is applied, whereby the sealing bead is still as a The first seal for the shafts is used. Since the sealing surface of the.: Valve disc deforms the sealing bead, but not into the If the elastomer lining is immersed, an increase in the torque when opening or closing the valve disc is avoided.
Anhand eines Ausführungsbeispiels wird die Erfindung näher erläutert. Es zeigt dieThe invention is explained in more detail using an exemplary embodiment. It shows the
Fig. 1 einen Längsschnitt durch eine erfindungsgemäß gestaltete Absperrklappe, dieFig. 1 is a longitudinal section through a butterfly valve designed according to the invention, the
030015/0596030015/0596
-s- 28A3860-s- 28A3860
Fig. 2 einen im Winkel von 90 zur Wellenachse verlaufenden Schnitt durch die Absperrklappe der Fig. 1, die2 shows an angle of 90 to the shaft axis Section through the butterfly valve of FIG. 1, the
Fig. 3 einen in der Ebene der Wellendurchtritte verlaufenden Schnitt durch die als Einzelheit dargestellte Elastomei— auskleidung der Absperrklappe der Fig. 1 und 2, und die3 shows a section running in the plane of the shaft openings through the elastomeric element shown as a detail. lining the butterfly valve of FIGS. 1 and 2, and the
Fig. 4 einen um 90 zum Schnitt der Fig. 3 versetzten Schnitt durch die Elastomerauskleidung.FIG. 4 shows a section through the elastomer lining offset by 90 to the section in FIG. 3.
In einem Gehäuse 1 ist eine Klappenscheibe 2 mittels zweier Wellen 3 und 4 drehbar angeordnet. Das Gehäuse 1 besitzt eine Elastomerauskleidung 5, die auf ihrer Innenseite als Teil einer Kugelhülle ausgebildet ist.In a housing 1 is a valve disc 2 by means of two shafts 3 and 4 rotatably arranged. The housing 1 has an elastomer lining 5 on its inside as part of a spherical shell is trained.
Die Dichtfläche 6 der Klappenscheibe 2 stellt einen Ausschnitt aus einer Kugelfläche dar. Diese Dichtfläche 6 wirkt zusammen mit einem auf der Elastomerauskleidung 5 angebrachten umlaufenden Dichtwulst 7, der an den Durchtritt 8 für die Wellen 3 und 4 in Ringwülste 9 übergeht.The sealing surface 6 of the valve disc 2 is a cutout a spherical surface. This sealing surface 6 interacts with a circumferential sealing surface attached to the elastomer lining 5 Sealing bead 7, which merges into annular beads 9 at the passage 8 for the shafts 3 and 4.
ilOOIS/OSSöilOOIS / OSSö
Claims (1)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782843860 DE2843860A1 (en) | 1978-10-07 | 1978-10-07 | BUTTERFLY VALVE WITH CENTRALLY BEARING FLAP DISC |
CH798579A CH639467A5 (en) | 1978-10-07 | 1979-09-04 | BUTTERFLY VALVE WITH CENTRICLY BEARED VALVE DISC. |
IT25926/79A IT1123283B (en) | 1978-10-07 | 1979-09-21 | BUTTERFLY INTERCEPTION VALVE WITH CENTRALLY SUPPORTED DISC |
SE7907971A SE438540B (en) | 1978-10-07 | 1979-09-26 | SHUTTER VALVE WITH CENTRICALLY STORED VALVE DISC |
AT0632279A AT381773B (en) | 1978-10-07 | 1979-09-26 | BUTTERFLY VALVE WITH CENTRALLY BEARING FLAP DISC |
FR7924679A FR2438216A1 (en) | 1978-10-07 | 1979-10-04 | ISOLATION VALVE WITH CENTER MOUNTED DISC |
GB7934651A GB2033058B (en) | 1978-10-07 | 1979-10-05 | Butterfly valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782843860 DE2843860A1 (en) | 1978-10-07 | 1978-10-07 | BUTTERFLY VALVE WITH CENTRALLY BEARING FLAP DISC |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2843860A1 true DE2843860A1 (en) | 1980-04-10 |
Family
ID=6051687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19782843860 Ceased DE2843860A1 (en) | 1978-10-07 | 1978-10-07 | BUTTERFLY VALVE WITH CENTRALLY BEARING FLAP DISC |
Country Status (7)
Country | Link |
---|---|
AT (1) | AT381773B (en) |
CH (1) | CH639467A5 (en) |
DE (1) | DE2843860A1 (en) |
FR (1) | FR2438216A1 (en) |
GB (1) | GB2033058B (en) |
IT (1) | IT1123283B (en) |
SE (1) | SE438540B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3604499C1 (en) * | 1986-02-13 | 1987-02-19 | Klein Schanzlin & Becker Ag | Butterfly valve with a centrally mounted disc |
DE102007016240A1 (en) * | 2007-04-04 | 2008-10-09 | Kieselmann Gmbh | Disk valve for e.g. pharmaceutical industry, has closure plate provided with bulge, from which shaft runs out, where bulge is provided with spherically rounded surface, against which sealing ring is pressed |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012000257A1 (en) * | 2012-01-10 | 2013-07-11 | Carl Freudenberg Kg | Seal for a disc valve |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2608161A1 (en) * | 1976-02-27 | 1977-09-01 | Tomoe Tech Res Co | Butterfly valve with O-ring stem seals - has circular rim of valve body dovetailed with plastics valve seat ring |
DE2620072B2 (en) * | 1975-05-09 | 1978-09-21 | Milwaukee Valve Co., Inc., Milwaukee, Wis. (V.St.A.) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3778028A (en) * | 1972-08-02 | 1973-12-11 | Dore Co John L | Lined butterfly valve |
-
1978
- 1978-10-07 DE DE19782843860 patent/DE2843860A1/en not_active Ceased
-
1979
- 1979-09-04 CH CH798579A patent/CH639467A5/en not_active IP Right Cessation
- 1979-09-21 IT IT25926/79A patent/IT1123283B/en active
- 1979-09-26 SE SE7907971A patent/SE438540B/en not_active IP Right Cessation
- 1979-09-26 AT AT0632279A patent/AT381773B/en not_active IP Right Cessation
- 1979-10-04 FR FR7924679A patent/FR2438216A1/en active Granted
- 1979-10-05 GB GB7934651A patent/GB2033058B/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2620072B2 (en) * | 1975-05-09 | 1978-09-21 | Milwaukee Valve Co., Inc., Milwaukee, Wis. (V.St.A.) | |
DE2608161A1 (en) * | 1976-02-27 | 1977-09-01 | Tomoe Tech Res Co | Butterfly valve with O-ring stem seals - has circular rim of valve body dovetailed with plastics valve seat ring |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3604499C1 (en) * | 1986-02-13 | 1987-02-19 | Klein Schanzlin & Becker Ag | Butterfly valve with a centrally mounted disc |
DE102007016240A1 (en) * | 2007-04-04 | 2008-10-09 | Kieselmann Gmbh | Disk valve for e.g. pharmaceutical industry, has closure plate provided with bulge, from which shaft runs out, where bulge is provided with spherically rounded surface, against which sealing ring is pressed |
DE102007016240B4 (en) * | 2007-04-04 | 2011-08-25 | Kieselmann GmbH, 75438 | Butterfly valve |
Also Published As
Publication number | Publication date |
---|---|
IT1123283B (en) | 1986-04-30 |
ATA632279A (en) | 1986-04-15 |
AT381773B (en) | 1986-11-25 |
IT7925926A0 (en) | 1979-09-21 |
SE438540B (en) | 1985-04-22 |
CH639467A5 (en) | 1983-11-15 |
FR2438216A1 (en) | 1980-04-30 |
GB2033058B (en) | 1983-01-06 |
FR2438216B1 (en) | 1984-12-28 |
SE7907971L (en) | 1980-04-08 |
GB2033058A (en) | 1980-05-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAP | Request for examination filed | ||
OD | Request for examination | ||
8131 | Rejection |