EP0957270B1 - Entraínement pivotant pour actionner une robinetterie - Google Patents

Entraínement pivotant pour actionner une robinetterie Download PDF

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Publication number
EP0957270B1
EP0957270B1 EP99107529A EP99107529A EP0957270B1 EP 0957270 B1 EP0957270 B1 EP 0957270B1 EP 99107529 A EP99107529 A EP 99107529A EP 99107529 A EP99107529 A EP 99107529A EP 0957270 B1 EP0957270 B1 EP 0957270B1
Authority
EP
European Patent Office
Prior art keywords
housing
shaft
pivoting actuator
jacket surface
wing
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
EP99107529A
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German (de)
English (en)
Other versions
EP0957270A2 (fr
EP0957270A3 (fr
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.)
Bar Pneumatische Steuerungssysteme GmbH
Original Assignee
Bar Pneumatische Steuerungssysteme 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 Bar Pneumatische Steuerungssysteme GmbH filed Critical Bar Pneumatische Steuerungssysteme GmbH
Publication of EP0957270A2 publication Critical patent/EP0957270A2/fr
Publication of EP0957270A3 publication Critical patent/EP0957270A3/fr
Application granted granted Critical
Publication of EP0957270B1 publication Critical patent/EP0957270B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/12—Characterised by the construction of the motor unit of the oscillating-vane or curved-cylinder type

Definitions

  • the invention relates to a rotary actuator for actuating a valve with a cylindrical, two-part sealed housing and one in it coaxial shaft-wing unit, which with a coaxial shaft of the actuating valve can be coupled torque-proof and from one side in the Housing mounted shaft and two with respect to their parallel to the axis of rotation
  • Such a device which is referred to as a swing-wing swivel drive
  • a swing-wing swivel drive is for example from the "Rotary Vane Actuators" brochure from Reuter Manufacturing known.
  • the well-known swivel drive is said to be suitable for both Hydraulic and pneumatic actuation should be suitable, in particular with pneumatic actuation, the sealing of the chambers in the area of rotating wing due to the very low viscosity of air a significant Problem. This tightness problem is therefore all the more serious, because with a pneumatic actuation of such swivel drives, the pressure of the Fluids after reaching the respective end position of the drive until the next actuation is maintained.
  • the state of the art also includes pneumatic rotary actuators, which have only one wing and therefore have comparatively large swivel angles allow.
  • pneumatic rotary actuators which have only one wing and therefore have comparatively large swivel angles allow.
  • such swivel drives have which, for example, in the general catalog "Pneumatic part-turn actuators, Issue 08/95, the Dietrich Schwabe Society for Control, Control, and Armature Technology m.b.H. "on pages 1, 2 and 5, comparable Disadvantages such as the double wing swivel drives listed above.
  • the whole Sealing kit consists of two wing seals, two spring plates, two shaft seals as well as other sealants, which together form a wear part set form. Furthermore, it occurs with such swivel drives as very disadvantageous in the appearance that due to the single-wing design considerable lateral forces act on the vane shaft, which result in increased wear.
  • pneumatic double-piston swivel drives are also known, as for example from the brochure "Swing drives of the top class" the company bar pneumatic control systems GmbH emerge.
  • Actuators that are either single-acting (with spring return) or double-acting are based on a rack and pinion principle with each self-centering piston guide in the housing.
  • Such drives have especially for pneumatic actuation due to their very small size Leakage rates proven for a long time.
  • These drives also have an excellent Wear resistance due to the sliding bearing of all moving parts on what an absolute freedom from maintenance results.
  • these known drives are comparatively complicated to build and therefore expensive to manufacture.
  • the invention has for its object a rotary actuator for actuating a Propose valve that is very low for pneumatic actuation Has leakage rate and is still simple and inexpensive can be made.
  • each wing on opposite Sides is provided with two sealing lips made of a rubber-elastic material each along the inner surface of the housing and the inside of one have upper and a lower end wall of the housing extending sections, each with the sealing lips of opposite wings that on the same Side of the median plane of the shaft-wing unit are arranged by means of the outer Shell surface of the shaft outgoing and along the inside of the upper and the lower end wall extending sections formed in itself are, and that each partition with a self-contained, along the outer Shell surface of the shaft, the upper and lower end walls of the housing and the inner circumferential surface of the housing extending seal from a rubber-elastic material is provided.
  • the partition walls have an excellent sealing effect, which is the case with a Pneumatic actuation of the swivel drive is readily permitted after it has been reached the end position of the drive system pressure even over a very long Maintain period.
  • the leakage rate is in the invention Swivel drive extremely low. Nevertheless, this is when it is actuated, i.e. one turn frictional torque to be overcome by the shaft-vane unit low, especially if the sealing lips are provided with a suitable lubricant be, whereby the sealing effect can be increased again.
  • partition walls are also sealed in a very simple manner by inserting them of self-contained circumferential seals in the corresponding End faces of the partitions. These are then simply between the wave and the respective inner lateral surface of the housing used in the axial direction, whereupon the cylindrical housing is completed by the second part. by virtue of The one-piece design of the partition seal will cause any leaks from avoided beforehand.
  • the swivel drive according to the invention can thus be very simple and inexpensive manufacture and is further characterized by an almost wear-free Operation off, so that there are only very low running costs.
  • the sealing lips are thus on the interacting with them Sealing surfaces and thus on the inside of the upper and lower end wall pressed on the housing so that there is a secure seal.
  • the shaft-wing unit is in the assembled state on all sides through the boundary surfaces of the housing by a certain amount compressed, so that there is an overall excellent sealing effect.
  • a further improvement in the sealing effect can be achieved in that the Run out sealing lips with sharp edges.
  • the particularly critical transition area between the outer surface of the Shaft, the end face of the partition facing this and its upper or lower end face can be sealed particularly advantageously if that of the outer Shell surface of the shaft outgoing sections of the sealing lips each one have trumpet-shaped fillet on the seals of the partitions in Area of a transition from an end face of the partition facing the shaft are adapted to an upper or lower end face of the partition.
  • a sealing of this corner area that is also suitable for shaft rotation.
  • the channels are assigned at their two ends to one side surface of the Adjoin the wing, the greatest possible swivel range of the wing can be achieved.
  • a particularly advantageous construction of the shaft-wing unit is according to the invention in that it consists of a core part made of a glass fiber reinforced Plastic is made with high strength and a limitation on all Chamber-forming surface areas with a casing made of a rubber-elastic Plastic is provided, from which the sealing lips are formed in one piece are.
  • the shaft-wing unit can be particularly inexpensive in this way Manufacture injection molding process, the core part being manufactured in a first operation and this in a second step with the rubber-elastic plastic is encapsulated. A separate and time-consuming individual assembly of the sealing lips, at there is no need for their exact fit anyway with such a construction.
  • the partitions are advantageously in the form of a circular segment or in cross section triangular and connectable to the housing. In this way can use the partitions on both sides as end stops for the wings serve as well when installing the rotary actuator in a simple way with the Housing are firmly connected.
  • the housing is made of two cup-shaped housing half is assembled.
  • the two cup-shaped housing halves can be made absolutely identical, if each half of the housing runs in the central plane of a partition Has inflow and outflow channel, with a chamber exclusively via one arranged completely next to the center line of the assigned partition wall connected is.
  • each partition on both sides their center line each with an outgoing from the assigned chamber and is provided with a pocket adjacent to the inner surface of the housing, into which the overflow channel opens.
  • the shaft of the shaft-wing unit is torque-proof outside the housing connected to an arm, the pivoting movement of two stop elements is limited, which can be positively coupled to the housing, it is not more required that the fixed partitions fulfill this stop function.
  • stop elements are circular segment shaped and on their outer surface have a toothing with a corresponding toothing interior.
  • Shell surface of an annular housing part adapted to the stop elements can be brought into engagement, can - with appropriate training Toothing - a very fine adjustment of the stop elements and thus an exact Realize adaptation of the rotary actuator to the valve to be operated with it.
  • Such a form fit by means of the interlocking teeth can be picked up at any time and in the shifted position of the stop elements restore.
  • the rotary actuator 1 shown in FIGS. 1 and 2 for actuating a valve consists of a closed, cylindrical housing 2 and one therein coaxial shaft-wing unit 3. This is with a not shown
  • the coaxial shaft of the valve to be operated can be coupled in a torque-proof manner, which is why 1 and 2 swivel actuator shown on such a valve, from the one Stub shaft protrudes, is attached.
  • the shaft-wing unit 3 consists of a bearing on both sides in the housing 2 Wave 4 and two integrally connected wings 5.
  • the middle planes of the Wings 5 are arranged offset from one another by 180 ° and run parallel to the Axis of rotation 6 of shaft 4.
  • the housing 2 is made of an upper housing half 7 and composed of a lower housing half 8. Both wings 5 extend each over the entire height 9 of a cylindrical interior 10 of the housing Second
  • the wings 5 each extend with a radially outer end face 11 to an inner cylindrical Shell surface 12 of the housing 2, this shell surface 12 of both housing halves 7 and 8 is formed (see FIG. 2).
  • Partitions 14 arranged offset by 180 ° are provided. These partitions 14 extend each also over the entire height 9 of the interior 10 of the Housing 2. Their extension also extends from the inner cylindrical surface 12 of the housing 2 up to an outer lateral surface 15 of the shaft.
  • the two non-adjacent chambers 16a and 16c are not one in FIG. 1 visible channel connected to each other, which runs inside a rib 17.
  • the Rib 17 is located above one that divides the interior 18 of the shaft 4 Partition 18.
  • An interconnecting the other two chambers 16b and 16d The channel runs in a rib which is arranged below the partition 18 and therefore cannot be seen in FIG. 1 (cf. FIGS. 3 to 5).
  • the cross-section of the two partition walls 14 is essentially triangular or segment of a circle.
  • a circumferential groove 19 arranged, in which a one-piece, also circumferential seal 20 is inserted.
  • This seal 20 is sliding against the cylindrical outer surface 15 of the shaft 4.
  • the seal 20 provides a sealing closure between the partition 14 and the upper end face 21, the lower end face 22 and the cylindrical inner lateral surface 12 of the housing 2 ago. At the latter sealing points there are no relative movements between the components to be sealed on.
  • the seal 20 is made of a rubber-elastic material, preferably made of polyurethane, and due to their inherent elasticity under certain prestressing can be inserted into the groove 19.
  • Both partitions 14 are on both sides of their central plane 13 with one of the associated chamber 16 outgoing and to the inner lateral surface 12 of the housing adjacent pocket 23a, 23b. 23c and 23d.
  • the partition 14 arranged on the left in FIG. 1 opens an overflow channel 24d which is next to the central plane 13 of the associated partition 14 and from a Zuund Outflow channel 25 of the lower housing half 8 starts.
  • the inflow and outflow channel 25 can be alternately connected to a pressure medium source or the environment.
  • the two housing halves 7 and 8 are made of a glass fiber reinforced polyamide material manufactured and are held together with the help of screws and nuts 26.
  • each wing 5 on opposite sides 27 'and 27 "with two sealing lips 28' and 28" made of a rubber-elastic material is provided.
  • Each of the sealing lips 28 'and 28 is self-contained; both sealing lips 28 'and 28 "are both one to the axis of rotation of the shaft parallel center plane 32 symmetrically as well as to a perpendicular to the axis of rotation 6 the central plane 33 running the shaft 4.
  • Fig. 4 it is further shown that the wings 5 one on the end faces have circumferential web 36, on the edges of which the sealing lips are arranged are.
  • the opposite sections 30 'and 31 'of the sealing lip 28 a distance which is greater than the clear height 9 of the interior 10 of the housing 2.
  • the diameter of the shaft-wing unit larger in the area of the opposite sections 29 'of the sealing lip 28 than the inside diameter of the interior 10 of the housing 2.
  • the channels 37 intersecting in a plan view are still for connection opposite chambers 16 shown, each extending within a rib 17.
  • the ribs 17 are integrally connected to a partition 18.
  • the stop elements 43 are circular segment-shaped formed and provided on their outer lateral surface with a toothing 44. This toothing can be engaged with a corresponding toothing 45 bring that on an inner lateral surface 46 of an annular housing part 47 is located.
  • the ring-shaped housing part 47 is integral with the housing halves 7 and 8 trained to reduce production costs due to large quantities to let (see Fig. 2).
  • each partition 14 on both sides its median plane 13 with both on its upper side and on its lower side Nose 49 is provided which engages in a corresponding pocket, which in the two housing halves 7 and 8 are formed, but not in FIGS. 1 and 2 are shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Lift Valve (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Sealing Devices (AREA)

Claims (14)

  1. Actionneur à fraction de tour destiné à l'actionnement d'un élément de robinetterie avec un boítier cylindrique fermé constitué de deux parties (7, 8) et avec un ensemble arbre - pales (3) monté coaxialement dans ledit boítier, ledit ensemble étant apte à être fixé en rotation avec un arbre coaxial (4) de l'élément de robinetterie à actionner et étant constitué d'un arbre monté par ses deux côtés dans le boítier et de deux pales (5) qui sont disposées en décalage angulaire de 180° par rapport à leurs plans médians parallèles à l'axe de rotation de l'arbre et qui sont reliées à l'arbre, lesdites pales s'étendant sur toute la hauteur d'un volume intérieur du boítier et la face d'extrémité radiale extérieure (11) de celles-ci s'étendant jusqu'à une chemise cylindrique (12) du boítier, ledit boítier comportant deux cloisons (14) fixes orientées radialement en décalage angulaire de 180° par rapport à leurs plans médians parallèles à l'axe de rotation de l'arbre, lesdites cloisons s'étendant sur toute la hauteur du volume intérieur du boítier depuis la chemise cylindrique intérieure du boítier jusqu'à une enveloppe extérieure (15) de l'arbre et coopérant avec les pales pour diviser le volume intérieur du boítier en quatre chambres (16a, 16b, 16c, 16d), chacune d'elles étant reliée à une autre chambre non adjacente (16a, 16c ; 16b, 16d) par des canaux (37) traversant l'arbre, deux chambres voisines étant par ailleurs munies chacune de raccords pour l'admission et l'écoulement du flux (25, 26) destinés à être reliés tour à tour à une source de fluide sous pression, caractérisé en ce que chaque pale (5) est pourvue, sur les côtés (27', 27") situés de part et d'autre de son plan médian, de deux lèvres d'étanchéité (28', 28") réalisées en un matériau élastique, lesdites lèvres comportant chacune des secteurs (29', 30', 29", 30") qui s'étendent le long de la chemise intérieure (12) du boítier (2) et des faces intérieures (21, 22) d'une paroi d'extrémité supérieure et inférieure du boítier (2), les lèvres d'étanchéité (28', 28") de pales opposées (5) disposées du même côté (27', 27") du plan médian de l'ensemble arbre - pales (3) étant conformées chacune pour être réalisées d'un seul tenant au moyen de secteurs (31', 31") longeant, depuis l'enveloppe extérieure (15) de l'arbre (4), la face intérieure (21, 22) des parois d'extrémité supérieure et inférieure et en ce que chaque cloison (14) est munie d'un joint (20) qui s'étend le long de l'enveloppe extérieure (15) de l'arbre (4), de la paroi d'extrémité supérieure et inférieure du boítier (2) ainsi que de la chemise intérieure (12) du boítier (2) et qui est réalisé d'un seul tenant en un matériau élastique.
  2. Actionneur à fraction de tour selon la revendication 1, caractérisé en ce que les lèvres d'étanchéité (28', 28") présentent un bord tranchant.
  3. Actionneur à fraction de tour selon la revendication 1 ou 2, caractérisé en ce que les secteurs (31', 31") des lèvres d'étanchéité (28', 28"), qui s'étendent depuis l'enveloppe extérieure (15) de l'arbre (4) et sont situées en regard de part et d'autre d'une section longitudinale de l'arbre (4), forment ensemble un arrondi en forme de trompette qu'épousent les joints (20) des cloisons (14) dans la région d'une zone de transition entre une face d'extrémité de la cloison (14) tournée vers l'arbre (4) et une face d'extrémité supérieure, voire inférieure de la cloison (14).
  4. Actionneur à fraction de tour selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les deux extrémités des canaux (37) sont contigus à une face latérale de la pale (5) associée.
  5. Actionneur à fraction de tour selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'ensemble arbre - pales (3) est constitué d'une partie centrale (34) réalisée en une matière plastique renforcée de fibres de verre à haute résistance et que toutes les surfaces dudit ensemble délimitant une chambre (16) sont revêtues d'une gaine (35) réalisée en une matière plastique élastique de laquelle sont issues de moulage d'une seule pièce les lèvres d'étanchéité (28', 28").
  6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les pales (5) comportent, sur leurs faces d'extrémité, un talon périphérique (36) sur le bord duquel sont disposées les lèvres d'étanchéité (28', 28").
  7. Actionneur à fraction de tour selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les cloisons (14) ont une section transversale en forme de portion de cercle ou de triangle et qu'elles sont aptes à établir une liaison positive avec le boítier (2).
  8. Actionneur à fraction de tour selon l'une quelconque des revendications 1 à 7, caractérisé en ce que, sur leur face supérieure et sur leur face inférieure de part et d'autre du joint périphérique (20), les cloisons (14) sont chacune munies d'un ergot (49) qui s'engage dans des renfoncements complémentaires ménagés dans la face d'extrémité correspondante du boítier (2).
  9. Actionneur à fraction de tour selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le boítier (2) est constitué de deux moitiés de boítier (7, 8) en forme de pot.
  10. Actionneur à fraction de tour selon la revendication 9, caractérisé en ce que chaque moitié de boítier (7, 8) comporte un canal d'admission et d'écoulement (25) qui s'étend dans le plan médian (13) d'une cloison (14) et qui est relié à une chambre (16) uniquement par le biais d'un canal de transfert (24) entièrement disposé à côté du plan médian (13) de la cloison (14) associée.
  11. Actionneur à fraction de tour selon la revendication 10, caractérisé en ce que chaque cloison (14) est munie, de part et d'autre de son plan médian (13), d'une enceinte (23) partant de la chambre associée (16) et contiguë à la chemise intérieure (12) du boítier (2) et dans laquelle débouche le canal de transfert (24).
  12. Actionneur à fraction de tour selon l'une quelconque des revendications 1 à 11, caractérisé en ce que l'arbre (4) de l'ensemble arbre - pales (3) est fixé en rotation, à l'extérieur du boítier (2), avec un bras (40) dont le pivotement est limité par deux éléments de butée (43) aptes à établir une liaison positive avec le boítier (2).
  13. Actionneur à fraction de tour selon la revendication 12, caractérisé en ce que les éléments de butée (43) ont la forme de portions de cercle et comportent, sur leur enveloppe extérieure, une denture (44) apte à se mettre en prise avec une denture complémentaire (45) prévue sur une chemise intérieure (46) d'une partie de boítier (47) annulaire adaptée aux éléments de butée (43).
  14. Actionneur à fraction de tour selon la revendication 12 ou 13, caractérisé en ce que des commutateurs (48) destinés à signaler la position de l'actionneur à fraction de tour (1) sont adaptés pour être fixés sur les éléments de butée (43), lesdits commutateurs (48) étant aptes à être actionnés par le bras (40).
EP99107529A 1998-05-13 1999-04-15 Entraínement pivotant pour actionner une robinetterie Expired - Lifetime EP0957270B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19821435 1998-05-13
DE19821435A DE19821435C2 (de) 1998-05-13 1998-05-13 Schwenkantrieb zur Betätigung einer Armatur

Publications (3)

Publication Number Publication Date
EP0957270A2 EP0957270A2 (fr) 1999-11-17
EP0957270A3 EP0957270A3 (fr) 2001-03-14
EP0957270B1 true EP0957270B1 (fr) 2003-12-10

Family

ID=7867640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99107529A Expired - Lifetime EP0957270B1 (fr) 1998-05-13 1999-04-15 Entraínement pivotant pour actionner une robinetterie

Country Status (3)

Country Link
EP (1) EP0957270B1 (fr)
AT (1) ATE256253T1 (fr)
DE (2) DE19821435C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10240594A1 (de) * 2002-08-28 2004-03-11 Deutsches Zentrum für Luft- und Raumfahrt e.V. Ventilklappe und Verfahren zur Herstellung einer Ventilklappe

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731599A (en) * 1971-03-08 1973-05-08 Cameron Iron Works Inc Rotary operator
FR2286300A1 (fr) * 1974-09-27 1976-04-23 Autage Roger Operateur rotatif a fluide sous pression
FR2445898A1 (fr) * 1979-01-04 1980-08-01 Jacottet Paul Ets Verin rotatif alternatif
DE2905193A1 (de) * 1979-02-12 1980-08-21 Rogatti Fa Harri Druckmittelbetaetigter drehantrieb
US4601231A (en) * 1981-05-26 1986-07-22 Torquer Co., Ltd. Rotary actuator and making method thereof
US4475738A (en) * 1982-04-15 1984-10-09 Hilliard Lyons Patent Management Inc. Dynamic seal arrangement with X-shaped seal
EP0248986B1 (fr) * 1986-06-09 1992-03-04 AlliedSignal Inc. Actionneur hydraulique à clapet oscillant
FR2612572B1 (fr) * 1987-03-18 1991-04-12 Europ Propulsion Dispositif fluidique a palette rotative sans joint d'etancheite interne
DE19511488C2 (de) * 1995-03-29 1998-09-17 Festo Ag & Co Fluidbetätigter Schwenkkolbenmotor

Also Published As

Publication number Publication date
DE19821435C2 (de) 2000-05-04
EP0957270A2 (fr) 1999-11-17
ATE256253T1 (de) 2003-12-15
DE59907984D1 (de) 2004-01-22
DE19821435A1 (de) 1999-11-25
EP0957270A3 (fr) 2001-03-14

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