DE19756425A1 - Rotary actuator, especially to operate valves using compressed air - Google Patents

Rotary actuator, especially to operate valves using compressed air

Info

Publication number
DE19756425A1
DE19756425A1 DE19756425A DE19756425A DE19756425A1 DE 19756425 A1 DE19756425 A1 DE 19756425A1 DE 19756425 A DE19756425 A DE 19756425A DE 19756425 A DE19756425 A DE 19756425A DE 19756425 A1 DE19756425 A1 DE 19756425A1
Authority
DE
Germany
Prior art keywords
piston
guide rod
cylinder
stop
stop segment
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.)
Withdrawn
Application number
DE19756425A
Other languages
German (de)
Inventor
Rolf Strasburger
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.)
Wilhelm Guth & Co KG GmbH
Original Assignee
Wilhelm Guth & Co KG GmbH
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 Wilhelm Guth & Co KG GmbH filed Critical Wilhelm Guth & Co KG GmbH
Priority to DE19756425A priority Critical patent/DE19756425A1/en
Publication of DE19756425A1 publication Critical patent/DE19756425A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/068—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the helical type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/16—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member
    • F16K31/163—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston
    • F16K31/1635—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston for rotating valves

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Actuator (AREA)

Abstract

The rotary actuator has a piston which moves linearly inside a cylinder (1). The latter has a baseplate, in which a rotating central shaft (5) is mounted. A transverse pin is fixed to the shaft, and engages in a helical driving slot in a gaiter on the piston. The piston is prevented from rotating by at least one guide rod (8), which is mounted in the baseplate, and which forms a fixed stop. This stop, together with a stop segment (9) on the shaft, limits the angle of rotation directly to an exact value, which is independent of the stroke. The stop segment may also have at least one recess (10), which is matched to the size of the guide rod.

Description

Derartige Drehantriebe, insbesondere mit Druckluft als Druckmittel, werden in großen Stückzahlen verwendet, um die Schließorgane von Ventilen von der Offenstellung in die Schließstellung und umgekehrt zu bewegen. Es versteht sich, daß diese Ventile nur dann ganz offen bzw. ganz geschlossen sind, wenn die Schließorgane jeweils die korrekte Winkelposition einnehmen. Handelt es sich um Ventile, deren Schließorgan gegen einen Ventilsitz schließt, so ergibt sich die korrekte Winkelposition selbsttätig.Such rotary drives, especially with compressed air as Pressure medium, are used in large quantities to the Closing elements of valves from the open position to the Closed position and vice versa. It goes without saying that these valves are only fully open or fully closed if the locking elements are correct Assume angular position. Are they valves whose Closing element closes against a valve seat, so it follows the correct angular position automatically.

Es gibt aber auch Ventile, bei denen das Schließorgan grundsätzlich endlos gedreht werden kann. Typische Beispiele sind Kugelventile und Scheibenventile. Bei diesen muß durch zusätzliche Maßnahmen sichergestellt werden, daß der zugehörige Drehantrieb in der korrekten Winkelposition gestoppt wird. Aufgrund der Kolben-Zylinder-Konstruktion in Verbindung mit der Kulisse ist es jedoch toleranzbedingt nicht möglich, eine exakte Drehwinkelbegrenzung auf beispielsweise 90° zu garantieren.But there are also valves in which the closing element can be rotated endlessly. Typical examples are ball valves and butterfly valves. These must go through additional measures are taken to ensure that the associated rotary drive in the correct angular position is stopped. Due to the piston-cylinder construction in Connection with the backdrop, however, is due to tolerance not possible to limit the exact angle of rotation for example to guarantee 90 °.

Aus der DE-C 33 03 872 oder auch der US 3 602 478 sind druckmittelbetätigte Drehantriebe bekannt, bei denen der Hub des bzw. der Membran durch axiale Anschläge begrenzt werden kann. Damit ist das Problem jedoch noch nicht gelöst, denn das Getriebe, mit dem die Hubbewegung des Kolbens bzw. der Membran in die Drehbewegung der Antriebswelle umgesetzt wird, ist toleranzbehaftet, wobei die Toleranzen mit zunehmender Einsatzdauer zunehmen.From DE-C 33 03 872 or also US 3 602 478 pressure-actuated rotary actuators known in which the stroke the or the membrane are limited by axial stops can. However, this does not solve the problem because the gear with which the stroke movement of the piston or the Membrane converted into the rotary motion of the drive shaft is subject to tolerance, the tolerances with increasing duration of use.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen gattungsgemäßen Drehantrieb so weiterzubilden, daß stets der gewünschte Drehwinkel eingehalten wird.The present invention is therefore based on the object to further develop a generic rotary drive so that the desired angle of rotation is always maintained.

Diese Aufgabe wird gelöst durch einen Drehantrieb mit den Merkmalen des Anspruchs 1.This task is solved by a rotary drive with the Features of claim 1.

Dank der vorliegenden Erfindung wird der Drehwinkel der Antriebswelle direkt und hubunabhängig auf den gewünschten Sollwert, beispielsweise 90°, begrenzt. Fertigungs- und Montageungenauigkeiten bei Zylinder, Kolben und Getriebe haben keinen Einfluß mehr, so daß deren Fertigungs- und Montagegenauigkeit entsprechend reduziert werden kann. Das erfindungsgemäße Anschlagsegment läßt sich auch nachrüsten. Der Zusatzaufwand ist minimal, insbesondere weil die schon serienmäßigen Führungsstangen selbst als Anschläge verwendet werden, der erreichte Effekt jedoch ist maximal.Thanks to the present invention, the angle of rotation of the Drive shaft directly and regardless of stroke to the desired Setpoint, for example 90 °, limited. Manufacturing and Mounting inaccuracies for cylinders, pistons and gears have no more influence, so that their manufacturing and Assembly accuracy can be reduced accordingly. The stop segment according to the invention can also be retrofitted. The additional effort is minimal, especially because it already does standard guide rods themselves used as stops the effect achieved is maximum.

Gemäß einer vorteilhaften Weiterbildung der Erfindung besitzt das Anschlagsegment wenigstens eine Aussparung, angepaßt an die Maße der korrespondierenden Führungsstangen. Auf diese Weise wird die Berührungsfläche zwischen Führungsstange und Anschlagsegment vergrößert, die Flächenbelastung entsprechend verkleinert, so daß die Genauigkeit während der gesamten Lebensdauer des Drehantriebs erhalten bleibt.According to an advantageous development of the invention the stop segment has at least one recess, adapted to the dimensions of the corresponding guide rods. In this way, the interface between Guide rod and stop segment enlarged, the Surface load reduced accordingly, so that the Accuracy throughout the life of the Rotary drive is retained.

Anhand der Zeichnung soll die Erfindung in Form eines Ausführungsbeispiels näher erläutert werden. Es zeigenBased on the drawing, the invention in the form of a Embodiment will be explained in more detail. Show it

Fig. 1 einen Längsschnitt durch einen Drehantrieb entlang der Linie I-I in Fig. 2 und Fig. 1 shows a longitudinal section through a rotary drive along the line II in Fig. 2 and

Fig. 2 einen Querschnitt durch den Drehantrieb entlang der Linie II-II in Fig. 1. FIG. 2 shows a cross section through the rotary drive along the line II-II in FIG. 1.

Die Fig. 1 und 2 zeigen jeweils als Schnitt und Teilschnitt einen Drehantrieb, wie er zur Betätigung der Schließorgane von Ventilen, insbesondere von Kugel- und Scheibenventilen, eingesetzt werden kann. Man erkennt einen Zylinder 1 mit einem Druckmittelanschluß 2, in dem ein Kolben 3 unter der Wirkung des Druckmittels einerseits und einer Rückstellfeder 13 andererseits linear bewegt werden kann. Figs. 1 and 2 respectively show a sectional and partial section of a rotary drive, such as may be used for actuating the closure means of valves, in particular ball and butterfly valves. One recognizes a cylinder 1 with a pressure medium connection 2 , in which a piston 3 can be moved linearly under the action of the pressure medium on the one hand and a return spring 13 on the other hand.

An der Unterseite des Kolbens 3 ist ein Zylinderstutzen 14 angeformt. In diesen ist eine Kulisse 6 in Form einer Schraubengangnut eingearbeitet.A cylinder neck 14 is formed on the underside of the piston 3 . In this a backdrop 6 is incorporated in the form of a screw groove.

In die offene Zylinderseite ist eine Bodenplatte 4 eingesetzt, an deren Unterseite zwei Gewindebolzen 11 zur Befestigung des Drehantriebs auf einem Ventilgehäuse (nicht dargestellt) vorgesehen sind. Im Zentrum der Bodenplatte 4 ist eine die Bodenplatte 4 durchdringende Drehwelle 5 gelagert. Deren unteres Ende ist mit einer Verbindungsmuffe 12 zu dem Ventil (nicht dargestellt) ausgerüstet.In the open cylinder side, a base plate 4 is inserted, on the underside of which two threaded bolts 11 are provided for fastening the rotary drive on a valve housing (not shown). In the center of the bottom plate 4, a bottom plate 4 penetrates the rotating shaft 5 is supported. Its lower end is equipped with a connecting sleeve 12 to the valve (not shown).

In der Drehwelle 5 ist ein Querstift 7 befestigt, der in die Kulisse 6 eingreift. Sobald der Kolben 3 nach unten bzw. oben gefahren wird, mit die Kulisse 6 den Querstift 7 mit, so daß die Hubbewegung des Kolbens 3 in eine Drehbewegung der Drehwelle 5 umgewandelt wird. Um zu verhindern, daß der Kolben 3 selbst in Drehung versetzt wird, wird er durch zwei Führungsstangen 8 geführt, die ihrerseits in der Bodenplatte 4 befestigt sind.In the rotary shaft 5 , a cross pin 7 is fixed, which engages in the scenery 6 . As soon as the piston 3 is moved downwards or upwards, with the link 6, the transverse pin 7 also , so that the stroke movement of the piston 3 is converted into a rotary movement of the rotary shaft 5 . In order to prevent the piston 3 itself from rotating, it is guided by two guide rods 8 , which in turn are fastened in the base plate 4 .

Wie insbesondere Fig. 2 erkennen läßt, ist an der Drehwelle 5 im Bereich der Bodenplatte 4 ein Anschlagsegment 9 befestigt, beispielsweise angeschweißt. Das Anschlagsegment 9 legt sich in der einen und in der anderen Endstellung jeweils gegen eine der beiden Führungsstangen 8. Um die Flächenpressung zwischen Anschlagsegment 9 und Führungsstangen 8 zu reduzieren, sind im Anschlagsegment 9 halbrunde Aussparungen 10 vorgesehen, angepaßt an die Abmessungen der Führungsstange 8.As can be seen in particular in FIG. 2, a stop segment 9 is fastened, for example welded, to the rotary shaft 5 in the area of the base plate 4 . The stop segment 9 lies in one and in the other end position against one of the two guide rods 8 . In order to reduce the surface pressure between the stop segment 9 and guide rods 8 , semicircular recesses 10 are provided in the stop segment 9 , adapted to the dimensions of the guide rod 8 .

Die Maße des Anschlagsegments 9 sind derart abgestimmt, daß die Drehwelle 5 zwischen den beiden Endstellungen hubunabhängig und stets genau den gewünschten Drehwinkel von z. B. 90° ausführt. Der Kolben 3 selbst kann dabei je nach Fertigungs- und Montagegenauigkeit einen kürzeren oder längeren Hub ausführen; auf die Exaktheit des Drehwinkels hat das keinen Einfluß.The dimensions of the stop segment 9 are coordinated such that the rotary shaft 5 between the two end positions is independent of the stroke and always exactly the desired angle of rotation of z. B. executes 90 °. The piston 3 itself can perform a shorter or longer stroke depending on the manufacturing and assembly accuracy; this has no influence on the exactness of the angle of rotation.

Claims (2)

1. Drehantrieb, umfassend
  • - einen Zylinder (1) mit Druckmittelanschluß (2),
  • - einen im Zylinder (1) linear bewegbaren Kolben (3),
  • - einen Zylinderstutzen (14) am Kolben (3),
  • - eine in den Zylinderstutzen (14) eingearbeitete Kulisse (6) in Form einer Schraubengangnut,
  • - eine in den Zylinder (1) eingesetzte Bodenplatte (4),
  • - eine in der Bodenplatte (4) gelagerte, die Bodenplatte (4) durchdringende, zentrische Drehwelle (5),
  • - einen in der Drehwelle (5) befestigten, in die Kulisse (6) eingreifenden Querstift (7),
  • - und wenigstens eine in der Bodenplatte (4) gelagerte, den Kolben (3) gegen Verdrehen sichernde Führungsstange (8),
    gekennzeichnet durch die Merkmale:
  • - an der Drehwelle (5) ist ein Anschlagsegment (9) befestigt,
  • - die wenigstens eine Führungsstange (8) bildet den Festanschlag,
  • - Anschlagsegment (9) und Führungsstange (8) begrenzen den Drehwinkel hubunabhängig und direkt auf seinen exakten Sollwert.
1. Rotary drive, comprehensive
  • - a cylinder ( 1 ) with pressure medium connection ( 2 ),
  • - a piston ( 3 ) which can be moved linearly in the cylinder ( 1 ),
  • - a cylinder connector ( 14 ) on the piston ( 3 ),
  • - A link ( 6 ) in the form of a screw groove, which is incorporated in the cylinder connector ( 14 ),
  • - a base plate ( 4 ) inserted into the cylinder ( 1 ),
  • - a mounted in the base plate (4), the bottom plate (4) penetrating, central rotary shaft (5),
  • a cross pin ( 7 ) fastened in the rotating shaft ( 5 ) and engaging in the link ( 6 ),
  • - and at least one guide rod ( 8 ) mounted in the base plate ( 4 ) and preventing the piston ( 3 ) from rotating,
    characterized by the characteristics:
  • - A stop segment ( 9 ) is attached to the rotary shaft ( 5 ),
  • - The at least one guide rod ( 8 ) forms the fixed stop,
  • - Stop segment ( 9 ) and guide rod ( 8 ) limit the angle of rotation independently of the stroke and directly to its exact setpoint.
2. Drehantrieb nach Anspruch 1, gekennzeichnet durch das Merkmal:
  • - das Anschlagsegment (9) besitzt wenigstens eine Aussparung (10), angepaßt an die Maße der Führungsstange (8).
2. Rotary drive according to claim 1, characterized by the feature:
  • - The stop segment ( 9 ) has at least one recess ( 10 ), adapted to the dimensions of the guide rod ( 8 ).
DE19756425A 1997-02-28 1997-12-18 Rotary actuator, especially to operate valves using compressed air Withdrawn DE19756425A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19756425A DE19756425A1 (en) 1997-02-28 1997-12-18 Rotary actuator, especially to operate valves using compressed air

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29703710U DE29703710U1 (en) 1997-02-28 1997-02-28 Rotary drive
DE19756425A DE19756425A1 (en) 1997-02-28 1997-12-18 Rotary actuator, especially to operate valves using compressed air

Publications (1)

Publication Number Publication Date
DE19756425A1 true DE19756425A1 (en) 1998-09-03

Family

ID=8036780

Family Applications (2)

Application Number Title Priority Date Filing Date
DE29703710U Expired - Lifetime DE29703710U1 (en) 1997-02-28 1997-02-28 Rotary drive
DE19756425A Withdrawn DE19756425A1 (en) 1997-02-28 1997-12-18 Rotary actuator, especially to operate valves using compressed air

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE29703710U Expired - Lifetime DE29703710U1 (en) 1997-02-28 1997-02-28 Rotary drive

Country Status (1)

Country Link
DE (2) DE29703710U1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003021077A1 (en) * 2001-07-26 2003-03-13 Cooper Cameron Corporation Roller screw actuator for subsea choke or module
US6793194B1 (en) 2003-04-29 2004-09-21 Bg Tech Ltd. Rotary valve actuator
WO2004090403A1 (en) * 2003-04-06 2004-10-21 B.G. Tech Ltd. Rotary valve actuator
CN1327140C (en) * 2004-03-19 2007-07-18 北京工业大学 Joint fixed lead reciprocating, rotary driving annular cylinder
WO2013127439A1 (en) 2012-02-28 2013-09-06 Tadino Vincent Luc Antoine Compressed-air device for controlling valves

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29814551U1 (en) * 1998-08-13 1998-11-12 Apv Rosista Gmbh Rotary drive, in particular pneumatic rotary drive
GB9917245D0 (en) * 1999-07-23 1999-09-22 Keystone Valve Uk Ltd Valve actuator
DE19950582B9 (en) 1999-10-21 2004-09-09 Tuchenhagen Gmbh Actuating device for a rotatable closure part of a valve
DE102010002621A1 (en) * 2010-03-05 2011-09-08 Krones Ag actuator
CN102918311B (en) * 2010-04-24 2014-07-09 基伊埃图亨哈根有限公司 Actuating device for a rotatable closure part of a valve
DE102011116627B3 (en) * 2011-10-20 2012-10-18 Gea Tuchenhagen Gmbh Actuating device for a rotatable closure part of a valve
CN112830117B (en) * 2020-12-31 2021-11-26 徐州亚兴医疗科技有限公司 Raw material tank for continuous catalytic device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003021077A1 (en) * 2001-07-26 2003-03-13 Cooper Cameron Corporation Roller screw actuator for subsea choke or module
GB2398605A (en) * 2001-07-26 2004-08-25 Cooper Cameron Corp Roller screw actuator for subsea choke or module
GB2398605B (en) * 2001-07-26 2005-05-11 Cooper Cameron Corp Roller screw actuator for subsea choke or module
WO2004090403A1 (en) * 2003-04-06 2004-10-21 B.G. Tech Ltd. Rotary valve actuator
US6793194B1 (en) 2003-04-29 2004-09-21 Bg Tech Ltd. Rotary valve actuator
CN1327140C (en) * 2004-03-19 2007-07-18 北京工业大学 Joint fixed lead reciprocating, rotary driving annular cylinder
WO2013127439A1 (en) 2012-02-28 2013-09-06 Tadino Vincent Luc Antoine Compressed-air device for controlling valves
US9777868B2 (en) 2012-02-28 2017-10-03 Out And Out Chemistry Sprl Compressed-air device for controlling valves

Also Published As

Publication number Publication date
DE29703710U1 (en) 1997-06-26

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