EP2530334B1 - Agencement de vannes - Google Patents

Agencement de vannes Download PDF

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Publication number
EP2530334B1
EP2530334B1 EP20110004507 EP11004507A EP2530334B1 EP 2530334 B1 EP2530334 B1 EP 2530334B1 EP 20110004507 EP20110004507 EP 20110004507 EP 11004507 A EP11004507 A EP 11004507A EP 2530334 B1 EP2530334 B1 EP 2530334B1
Authority
EP
European Patent Office
Prior art keywords
valve
main valve
pilot
pilot valves
assembly according
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.)
Not-in-force
Application number
EP20110004507
Other languages
German (de)
English (en)
Other versions
EP2530334A1 (fr
Inventor
Grzegorz Bogdanowicz
Heiko Kühbauch
Maik Kliem
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.)
Festo SE and Co KG
Original Assignee
Festo SE and Co KG
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Filing date
Publication date
Application filed by Festo SE and Co KG filed Critical Festo SE and Co KG
Priority to EP20110004507 priority Critical patent/EP2530334B1/fr
Publication of EP2530334A1 publication Critical patent/EP2530334A1/fr
Application granted granted Critical
Publication of EP2530334B1 publication Critical patent/EP2530334B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0807—Manifolds
    • F15B13/0817—Multiblock manifolds

Definitions

  • the invention relates to a valve assembly comprising at least one valve unit having a main valve with at least one switchable between a plurality of switch positions main valve member and two for fluidly actuation of the main valve, electrically operated pilot valves, each pilot valve can take a loading position in which it is a switching causing the main valve member causing fluid loading of the main valve member.
  • One from the EP 2 047 111 B1 known valve assembly of this type is designed as a valve battery and includes a plurality of valve units, each having a main valve and two serving to actuate the main valve pilot valves.
  • Each pilot valve is electrically operable and can be switched by appropriate control in an admission position in which it causes a fluid admission of a main valve member of the main valve, which has the consequence that the main valve member moves in a switching direction and thereby the operating state of the main valve is switched.
  • the two pilot valves are responsible for bringing about oppositely oriented switching movements of the main valve member.
  • each one of the two pilot valves for fluid supply to the main valve member is responsible in each case one of its two possible switching directions.
  • a pressure relief valve which is composed of a main valve, three pilot valves and three solenoid valves.
  • This actuating pressure is variable and depends on which of the solenoid valves is opened. Only one of the existing multiple solenoid valves can be opened at the same time.
  • the invention has for its object to provide a valve assembly having at least one reversible valve unit in a very short time.
  • the two pilot valves of the valve unit are fluidically connected to the main valve, that the actuatable by them upon receipt of the admission position Fluidbeetzschlagung the main valve member is oriented in the same switching direction, wherein the valve unit is an operating condition may comprise or has, in which both pilot valves occupy their Beaufschlagungswolf at the same time.
  • the two pilot valves are suitably switchable synchronously in their Beaufschlagungswolf. In this way, a high flow is immediately available for the fluid admission of the main valve member to be switched over. In principle, however, it would also be possible, for example, to minimize the structural load on the valve unit, not to operate the two pilot valves simultaneously, but with a time delay, so that the operating state of existing admission positions occurs at a slight time offset.
  • each of the two pilot valves is suitably switched to a relief position, in it lifts the induced in the admission position fluid loading of the main valve member.
  • This downshift requires a very short changeover time when both pilot valves are in their unloaded position at the same time. In this case, a maximum large outflow cross section is available for pressure relief. It is particularly useful when the two pilot valves synchronously, ie simultaneously, are switchable in their discharge position.
  • the valve assembly is equipped with an electrical control device that allows such actuation of the pilot valves that the two pilot valves occupy either simultaneously their Beaufschlagungswolf or at the same time a fluid loading of the main valve member repealing relief position.
  • an electrical control device that allows such actuation of the pilot valves that the two pilot valves occupy either simultaneously their Beaufschlagungswolf or at the same time a fluid loading of the main valve member repealing relief position.
  • valve unit provides an embodiment as a monostable valve unit.
  • the main valve member is biased by spring means constantly in the direction of a basic position and can thereby be switched to another switching position, that the cause by the parallel connection of the two pilot valves Fluidbeaufschlagung the main valve member is oriented opposite to the spring force of the spring means. If the pilot valves are switched to the admission position, the result is a fluid force that is greater than the oppositely acting spring force, so that the main valve member is switched.
  • By switching back the pilot valves in a the fluid loading of the main valve member canceling relief position returns the main valve member due to the still pending spring force of the spring means back to the normal position.
  • the spring means may be mechanical or fluidic in nature. Particularly advantageous is an embodiment in the form of a fluid cushion, in particular an air cushion, which is provided in particular by being tapped from a valve channel within the main valve.
  • valve unit can also be realized with bistable functionality, the main valve member being able to be controlled in a fluid-controlled manner for switching over into both switching directions.
  • This controlled fluid loading is expediently carried out in both switching directions by two pilot valves, which can simultaneously take their Beaufscherungswolf and at the same time their discharge position. Accordingly, the switching movements in both switching directions can be actively performed at a high switching speed.
  • the main valve expediently has a longitudinal extent with two opposite end faces.
  • the main valve member is arranged in the main valve in particular so that its switching movement takes place in the longitudinal direction of the main valve. So that the shortest possible channels are required for fluid loading and preferably also for pressure relief of the main valve member and accordingly the dead volume to be alternately filled and to be emptied as low as possible, both pilot valves are expediently assigned one and the same end face of the main valve.
  • the two pilot valves are arranged in the axial extension of the main valve, so that the valve unit can have a very slim design.
  • valve unit provides that the two pilot valves are arranged in the longitudinal direction of the main valve in succession to one and the same end face of the main valve. In this way, there is an axial succession of the main valve and the two pilot valves.
  • Such an embodiment has the advantage that the valve unit can be realized with very narrow width dimensions, which predestines them, among other things, to be combined battery-like in a valve arrangement in combination with other valve units of the same or different type.
  • the main valve has a longitudinal extent with a longitudinal axis and at a right angle to the longitudinal axis oriented longitudinal side has openings of internal valve channels.
  • the main valve expediently also has a height direction perpendicular to the longitudinal side having the orifices and a width direction perpendicular to the height direction and the longitudinal direction.
  • both pilot valves are arranged in the axial direction of the longitudinal axis successively on one and the same end face of the main valve, wherein they are not wider in the width direction than the main valve. In this way, a plurality of valve units can be arranged alongside each other in a space-saving manner in a row arrangement coinciding with the width direction.
  • pilot valves On the input side preferably connected together to one and the same pilot control feed channel.
  • Each pilot valve can ensure that the drive fluid required to actuate the main valve member is transmitted through a pilot working passage from the respective pilot valve to the main valve member of the main valve. It is advantageous if each pilot valve is assigned its own pilot control working channel. However, it would also be possible to assign the two pilot valves together a single pilot working channel corresponding large flow cross-section.
  • valve assembly 1 In the FIG. 1 exemplified embodiment of a valve assembly 1 according to the invention is equipped with a plurality of valve units 2, each of which is able to control the flow of a fluidic pressure medium - for example, compressed air.
  • valve units 3 Two pieces of these several valve units 2 are exemplarily designed in a manner relevant to the invention and are therefore also referred to below as valve units 3 according to the invention.
  • valve units 4 Two more of the illustrated valve units 2 are of conventional construction and are therefore also referred to below as conventional valve units 4.
  • the following considerations relate to the valve units, regardless of their individual configuration, is generally of valve units 2 the speech.
  • valve arrangement 1 can also have a different number of valve units 3 according to the invention.
  • all valve units 2 can be designed as valve units 3 according to the invention.
  • FIG. 1 is intended to demonstrate that it is expedient to combine any number of valve units 3 according to the invention within one and the same valve arrangement 1 with any number of conventional valve units 4.
  • the valve arrangement 1 preferably contains a valve carrier 5 with a main axis 6 defining its longitudinal direction.
  • the valve carrier 5 is formed in one piece, plate-shaped. However, it could also be composed of a plurality of in the direction of the main axis 6 attached to each valve carrier modules.
  • the valve carrier 5 preferably has a rectangular cross-section.
  • One of the two large-scale outer surfaces of the valve carrier 5 forms a for assembly with individual valve units 2 provided assembly area 7.
  • This assembly area 7 is divided into a plurality of placement slots 7 a, which are in the direction of the main axis 6 side by side.
  • placement places 7a On each of these placement places 7a, one of the valve units 2 can be mounted.
  • FIG. 1 the valve carrier 5 is shown only in a partially equipped state, with some placement places 7a are unoccupied and the valve units to be mounted there are 2 illustrated in the off-hook state.
  • the individual placement places 7a expediently have an oblong outline with a longitudinal axis which runs parallel to a transverse axis 8 of the valve carrier 5 which is perpendicular to the main axis 6.
  • valve carrier channels 11 In the interior of the valve carrier 5, a plurality of hereinafter referred to as valve carrier channels 11 fluid channels is formed. Several of these valve carrier channels 11 extend in the axial direction of the main axis 6 and also open to each placement place 7a. By way of example, these are a valve carrier feed channel 11a and two valve carrier unloader channels 11b, 11c. Via the valve carrier feed channel 11a, all valve units 2 can be supplied with the fluidic pressure medium to be controlled and distributed by the valve units 2. For this purpose, the valve carrier feed channel 11a can be connected to an external pressure source not shown. This purpose is served by a feed connection opening 14 arranged externally on the valve carrier 5. The pressure medium is in particular compressed air.
  • valve carrier relief channels 11b, 11c can be used to dissipate pressure fluid flowing back in the context of the operation of connected consumers and thereby relieve the load in terms of pressure.
  • the valve carrier relief channels 11b, 11c are connected for this purpose with a pressure sink and in particular with the atmosphere.
  • serving connection openings are exemplarily on the back of the valve carrier 5 and are therefore not visible.
  • FIG. 1 allows a view of a front end face of the valve carrier 5 and thus on the valve carrier relief channels 11b, 11c extending therein and the valve carrier feed channel 11a. This is usually a frontal on the Valve carrier 5 sealingly mounted end cover 12 shown in the removed state.
  • valve carrier 5 From each placement place 7a go two individual, the valve carrier 5 passing through valve carrier channels 11, which act as valve carrier working channels 11d, 11e and lead to a side surface of the valve carrier 5, where they end in consumer connection openings 13.
  • the consumer connection openings 13 are designed to be able to connect fluid lines, not shown further, with the aid of which at least one external consumer to be actuated can be connected, for example a fluid-actuated drive.
  • All valve units 2 are suitably of electrofluidic pilot-operated type.
  • the construction of the at least one valve unit 3 according to the invention is described below, in particular with reference to FIG Figures 2 and 3 , more details.
  • Each valve unit 3 comprises a main valve 15 and two pilot valves 16, 17, the latter also being referred to below as the first and second pilot valves 16, 17.
  • the pilot valves 16, 17 are electrically actuated type.
  • the main valve 15 can be actuated by controlled supply and removal of a drive fluid by means of fluid force, wherein the associated fluid loading and pressure relief through the two pilot valves 16, 17 is controllable.
  • the main valve 15 has expediently a longitudinal extension with a longitudinal axis 18. It has a along the longitudinal axis 18 extending, elongated main valve housing 22 with a longitudinal side which is designed as a mounting surface 23 and with the advance it can be mounted on a loading station 7a of the valve carrier 5 or is mounted. Fixing screws 24 or other fastening means allow releasably fixing the main valve 15 and thus the entire valve unit 3 according to the invention on the valve carrier 5.
  • mouths 33 extending in the main valve 15, hereinafter referred to as the main valve channels 32 fluid channels. If the pilot control unit 3 according to the invention is attached to a mounting surface 7a, these mouths 33 are in communication with the openings of the valve carrier channels 11 present on the mounting surface 7a.
  • main valve housing 22 In the interior of the main valve housing 22 is a in the axial direction of the longitudinal axis 18 extending main valve chamber 25 is formed in which at least one main valve member 26 is received linearly displaceable in the axial direction of the longitudinal axis 18.
  • the displaceability allows a direction indicated by a double arrow switching movement 27 of the main valve member 26 relative to the main valve housing 22.
  • This switching movement 27 can be done either in a first switching direction 27a or in a second reversing direction 27b opposite thereto.
  • the main valve 15 is suitably designed as a slide valve. Accordingly, it is at its main valve member 26 is a valve spool, which can cooperate radially sealingly with respect to the main valve housing 22 fixed sealing surfaces 28, of which it is concentrically enclosed.
  • the sealing surfaces 28 are formed in the embodiment of annular, preferably rubber-elastic sealing elements which are fixed in the interior of the main valve chamber 25 on the main valve housing 22.
  • the main valve may also be designed in the manner of a seat valve.
  • the main valve member 26 is multi-stepped in its longitudinal direction and has alternately successive longitudinal sections of larger and smaller diameter. The length sections of larger diameter can be in a corresponding switching position of the main valve member 26 with the sealing surfaces 28 in sealing contact.
  • valve chamber longitudinal sections 25a which are each arranged between two in the axial direction of the longitudinal axis 18 at a distance successively arranged sealing surfaces 28.
  • Each valve chamber longitudinal section 25a communicates with one of the main valve channels 32 and thus is in fluid communication with one of the valve carrier channels 11 with main valve 15 mounted on the valve carrier 5.
  • the individual channels are assigned to one another such that in the two possible switching positions of the main valve member 26 the valve carrier feed channel 11a is connected to one of the two valve carrier working channels 11d or 11e, while at the same time the valve carrier valve not connected to the valve carrier feed channel 11a.
  • Working channel 11d or 11e with one of the two valve support discharge channels 11b or 11c is in communication.
  • the main valve 15 is thus designed in particular as a 5/2-way valve.
  • the valve unit 3 according to the invention is preferably of monostable functionality.
  • the main valve member 26 of the main valve 15 is biased by spring means 34 in a basic position, which is exemplified by the first switching position.
  • the spring means 34 exist preferably from a fluid cushion, in particular an air cushion, which constantly acts on an axially oriented restoring surface 35 of the main valve member 26 during operation of the valve unit 3 according to the invention.
  • the return surface 35 is exemplarily formed by one of the two axially oppositely oriented end faces of the main valve member 26 and defines a return chamber 36 which is formed by one of the two end portions of the main valve chamber 25.
  • the return chamber 36 communicates via a in the main valve housing 22 extending, for better distinction referred to as reset channel 37 valve passage constantly with that valve chamber longitudinal portion 25 a, which is connected to the valve carrier feed channel 11 a. Consequently, the same fluidic operating pressure is constantly present in the return chamber 36, below which the pressure medium to be distributed by the main valve 15 also stands.
  • the fluid medium acting as a spring medium could also be fed separately into the main valve 15.
  • a mechanical spring means is used instead of a fluid spring, for example a placed in the return chamber 36, on the one hand on the main valve housing 22 and on the other hand on the main valve member 26 supporting mechanical compression spring.
  • the respective desired switching position of the main valve member 26 can be predetermined by controlled fluid admission of the main valve member 26 by means of the two electrically actuable pilot valves 16, 17. More specifically, in the embodiment, the two pilot valves 16, 17 are capable of selectively biasing or pressurizing a drive surface 38 of the main valve member 26 oriented axially opposite the return surface 35 to relieve. A fluid loading of the drive surface 38 by the drive fluid has a spring force F F of the spring means 34 opposite fluidic force F A result, which is greater than the spring force F F , so that the main valve member 26 overcoming the spring force F F from the first switching position in the second switching position is switched and held in this second switching position as long as the driving force F A is present.
  • the drive surface 38 is expediently located on one of the two axially oriented end faces of the main valve member 26. It is in particular formed by an end face of the main valve member 26.
  • the drive surface 38 is larger than the return surface 35 so that at the same pressure a driving force F A can form, the is greater than the oppositely acting spring force F F.
  • the main valve member 26 has a control section which has the circular-cylindrical outer contour graduated in the axial direction and two piston sections arranged on the end side, one piston section defining the return surface 35 and the other piston section defining the drive surface 38.
  • the control section and the piston sections can be firmly connected or may be formed as separate components that rest loosely against each other.
  • the drive surface 38 or a piston section defining the drive surface 38 movably delimits a drive chamber 42, which is formed by an end section of the main valve chamber 25.
  • a drive chamber 42 which is formed by an end section of the main valve chamber 25.
  • two pre-control working channels 43a, 43b of the valve unit 3 according to the invention communicate with this drive chamber 42.
  • These two pre-control working channels also referred to below as the first and second pilot control working channels 43a, 43b, are in FIG Figures 2 and 3 indicated only schematically, since they are outside the plane of the drawing.
  • the two pilot valves 16, 17 are expediently combined with the main valve 15 to form a self-supporting assembly. Both pilot valves 16, 17 are expediently assigned to one and the same axially oriented end face of the main valve 15.
  • the main valve housing 22 has at one of its two in the axial direction of the longitudinal axis 18 oriented end faces - hereinafter also referred to as pilot control end face 44 - on a mounting surface 45a, to which the first pilot valve 16 is grown.
  • the first pilot valve 16 in turn has a further attachment surface 45b facing away from the main valve 15 in the axial direction of the longitudinal axis 18, to which the second pilot valve 17 is attached.
  • valve unit 3 Since therefore the two pilot valves 16, 17 are arranged in the axial extension of the main valve 15, wherein they are also arranged in succession in the longitudinal direction of the main valve 15, the valve unit 3 according to the invention can be realized with a small width.
  • the valve unit 3 according to the invention in particular designed such that measured in the width direction 47 dimensions of each pilot valve 16, 17 at most equal to the width of the associated main valve 15.
  • the valve unit 3 according to the invention is suitable for easy combination with conventional valve units 4 within a plurality of valve units 2 having valve assembly 1, since it can be mounted on each placement space 7a, to which alternatively a conventional valve unit 4 could be mounted.
  • Each of the two pilot valves 16, 17 contains a one-part or multi-part pilot valve member 48 and a valve member 48 associated, electrically activatable actuator 52.
  • the actuator 52 is designed as a solenoid device, so that the pilot valves 16, 17 are implemented as solenoid valves. It would also be conceivable, for example, a design as piezo valves.
  • the pilot valve member 48 may be formed at a solenoid valve from the movable armature of the solenoid device or may be coupled to the movable armature of the solenoid device.
  • Each pilot valve 16, 17 has externally accessible contact means 53 for receiving the electrical actuating signals required for its actuation.
  • An electronic control device 54 which is preferably arranged outside the valve units 2 and preferably also outside the valve carrier 5, can be electromechanically connected to the contact means 53 in order to supply the aforesaid electrical actuating signals to the same.
  • the valve assembly may include a suitable connection module 49 for this purpose
  • the valve arrangement 1 preferably contains a signal transmission device 55 extending in the axial direction of the main axis 6, which is arranged in particular in the interior of the valve carrier 5 and which, preferably detachably, is in electrical connection with the contact means 53 of all the pilot valves 16, 17.
  • the signal transmission device 55 can be connected or connected to the electronic control device 54, in particular via the connection module 49, in order to forward the electrical actuating signals output by this electronic control device 54 to the individual pilot control valves 16, 17 in the correct manner.
  • the signal transmission device 55 extends in a receiving channel 56 formed in the interior of the valve carrier 5 and extending in the axial direction of the main axis 6.
  • the signal transmission device 55 is constructed in particular on the basis of one or more printed circuit boards, which have the necessary electrical conductors. It can also be a cable connection. Preferably, the signal transmission device 55 is designed in the form of a serial bus. However, an embodiment for parallel signal transmission with individual control of the individual pilot valves 16, 17 is also readily possible.
  • the pilot valves 16, 17 are designed in particular as 3/2-way valves. Each pilot valve 16, 17 contains two first and second valve openings 57, 58 controlled by the associated at least one pilot valve member 48 and in particular reversibly counteracted and closeable. Each first valve opening 57 is located between the pilot working channel 43a, 43b of the associated pilot valve 16, 17 and a pilot feed channel 62 Each second valve opening 58 is in turn between the pilot-control working channel 43a, 43b of the associated pilot valve 16, 17 and a pilot-control discharge channel 63.
  • a particular advantage of the embodiment is that both pilot valves 16, 17 on the input side together on one and the same pilot Feeding channel 62 are connected. Furthermore, both pilot valves 16, 17 are expediently connected together on the output side to one and the same pilot relief channel 63. Both the pilot-feed passage 62 and the pilot-assist discharge passage 63 run inside the valve unit 3 according to the invention.
  • both pilot valves 16, 17 in the pilot feed passage 62 provide the fluid supply to the main valve member 26 as required for the drive fluid to be provided. Conveniently, this is done from the valve carrier 5, which contains a valve carrier channel 11 which acts as a valve carrier pilot feed channel 11f and which communicates with the pilot feed passage 62 of each valve unit 3 according to the invention when the latter is mounted at the associated loading station 7a.
  • valve carrier pilot control feed channel 11f takes place, for example, from the outside via a pilot control feed opening 59 arranged outside on the valve carrier 5.
  • pilot feed passage 62 of each valve unit 3 inside the associated main valve 15 is connected to the valve chamber longitudinal portion 25a communicating with the valve carrier feed passage 11a and thus supplied with the drive fluid.
  • pilot-discharge channel 63 is suitably associated with both pilot valves 16, 17 together. This is conveniently done through the valve carrier 5, which for this purpose has a valve carrier channel 11, which acts as a valve carrier pilot relief channel 11g and fluidly connected to the pilot discharge channel 63 of each valve unit 3 according to the invention is when the latter is mounted on the assigned loading place 7a.
  • Each pilot valve 16, 17 is selectively switched by appropriate electrical control in a Beauftschungsgna and in a relief position.
  • the pilot valve 16, 17 in question establishes fluid communication between the pilot feed passage 62 and the associated pilot working passage 43a, 43b, while at the same time the pilot relief passage 63 is disconnected.
  • the pilot working passage 43a, 43b is connected to the pilot relief passage 63, while at the same time the pilot feed passage 62 is disconnected.
  • pilot working passages 43a, 43b are associated with one and the same driving surface 38, the pressurizing position of each pilot valve 16, 17 causes fluid pressurization of the main valve member 26 in the first switching direction 27a.
  • the valve unit 3 can be put into an operating state in which both the first pilot valve 16 and the second pilot valve 17 assumes its loading position.
  • a simultaneous fluid loading of the main valve member 26 by both pilot valves 16, 17 take place to generate the driving force F A.
  • the two pilot valves 16, 17 can be switched synchronously into their admission position from the previously assumed relief position. In this way is available at the main valve member 26 from the beginning of the switching operation to the maximum possible thrust power available.
  • the switching commands are supplied to the pilot control valves 16, 17 in the form of electrical actuating signals via the signal transmission device 55 away from the preferably external electronic control device 54.
  • the pilot valves 16, 17 are expediently designed as seat valves. When assuming the admission position, the associated pilot valve member 48 bears sealingly against a valve seat framing the second valve opening 58, while at the same time being lifted off by a valve seat framing the first valve opening 57. In the discharge position, there are reverse conditions. Accordingly, in the simultaneous load position of both pilot valves 16, 17, the flow of flow of both first valve openings 57 cumulatively is available to the drive fluid as the total flow cross section. The same applies in the discharge position with respect to the two second valve openings 58.
  • the two pilot valves 16, 17 communicate with the drive chamber 42 not by means of two separate pilot control working channels, but via a common, single pilot control working channel.
  • pilot valves 16, 17 With regard to the supply and discharge of the pilot valves 16, 17, it would be different from the embodiment also possible to use two separate feed pilot feeders 62 and / or pilot discharge channels 63. Also In these cases, the inventively desired fluidic parallel connection would be ensured in the fluid loading of the main valve member 26 and expediently also in the pressure relief of the main valve member 26.
  • FIG. 1 are two conventional valve units 4 indicated, each containing a main valve and a single pilot valve, wherein the single pilot valve with respect to the internal channel cross-sections and in particular with respect to the cross sections of the internal valve openings is the same design as each pilot valve 16, 17 of the valve unit according to the invention in the inventive valve unit 3 expediently existing axial juxtaposition of several pilot valves 16, 17, the width of the valve unit according to the invention 3 compared with a conventional valve unit 4 is not increased.
  • the two pilot valves 16, 17 are in the region of opposite axial end faces of the main valve 15.
  • this variant is considered rather less recommended.
  • At least one valve unit 3 according to the invention is designed as an impulse valve, in which the main valve member 26 can be actively driven fluidically controlled in both switching directions 27a, 27b.
  • a valve unit according to the invention 3 expediently contains, in addition to a first pair of fluidically connected first and second pilot valves 16, 17, a further pilot valve or, preferably, a second pair of fluidically connected pilot valves for generating the opposite switchover movement.
  • the additional at least one pilot valve is expediently located in the region of that end face of the main valve 15, which is opposite to that on which the first and second pilot valves 16, 17 are installed.
  • the measures according to the invention are also applicable to valve units whose main valve member can assume three switching positions or which contain more than one main valve member.
  • the measures according to the invention can also be implemented in valve arrangements whose at least one valve unit is used as a single unit and is not mounted on a valve carrier.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Driven Valves (AREA)

Claims (16)

  1. Agencement de soupapes avec au moins une unité de soupape (3) qui présente une soupape principale (15) avec au moins un organe de soupape principale (26) commutable entre plusieurs positions de commutation ainsi que deux soupapes de précommande (16, 17) actionnables électriquement, servant à l'actionnement fluidique de la soupape principale (15), chaque soupape de précommande (16, 17) pouvant occuper une position d'alimentation, dans laquelle elle suscite une alimentation fluidique de l'organe de soupape principale (26) provoquant une commutation de l'organe de soupape principale (26), caractérisé en ce que les deux soupapes de précommande (16, 17) sont interconnectées fluidiquement avec la soupape principale (15) de telle manière que l'alimentation fluidique qu'elle peut susciter lors de l'occupation de la position d'alimentation de l'organe de soupape principale (26) est orientée dans le même sens de commutation (27a), l'unité de soupape (3) pouvant présenter ou présentant un état de fonctionnement, dans lequel les deux soupapes de précommande (16, 17) occupent en même temps leur position d'alimentation.
  2. Agencement de soupapes selon la revendication 1, caractérisé en ce que les deux soupapes de précommande (16, 17) peuvent être commutées de manière synchrone dans leur position d'alimentation.
  3. Agencement de soupapes selon la revendication 1 ou 2, caractérisé en ce que chaque soupape de précommande (16, 17) peut occuper une position de décharge, dans laquelle elle supprime l'alimentation fluidique suscitée dans la position d'alimentation de l'organe de soupape principale (26).
  4. Agencement de soupapes selon la revendication 3, caractérisé en ce que l'unité de soupape (3) peut présenter ou présente un état de fonctionnement, dans lequel les deux soupapes de précommande (16, 17) occupent en même temps leur position de décharge.
  5. Agencement de soupapes selon la revendication 4, caractérisé en ce que les deux soupapes de précommande (16, 17) sont commutables de manière synchrone dans leur position de décharge.
  6. Agencement de soupapes selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'il contient un dispositif de commande (54) électrique, par lequel une commande des soupapes de précommande (16,17) est possible, de telle sorte que les deux soupapes de précommande (16, 17) occupent en même temps au choix leur position d'alimentation ou une position de décharge supprimant l'alimentation fluidique de l'organe de soupape principale (26).
  7. Agencement de soupapes selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'unité de soupape (3) présente une fonctionnalité monostable, l'organe de soupape principale (26) étant précontraint par des moyens de ressort (34) en direction d'une position de base et l'alimentation fluidique pouvant être suscitée dans la position d'alimentation des soupapes de précommande (16, 17) de l'organe de soupape principale (26) étant orientée à l'opposé de la force de ressort des moyens de ressort (34).
  8. Agencement de soupapes selon la revendication 7, caractérisé en ce que les moyens de ressort (34) sont formés par un coussin de fluide qui est prélevé en particulier par un canal de soupape s'étendant à l'intérieur de la soupape principale (15).
  9. Agencement de soupapes selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la soupape principale (15) présente une étendue longitudinale avec deux côtés avant opposés, les deux soupapes de précommande (16, 17) étant associées à un même côté avant (44) de la soupape principale (15).
  10. Agencement de soupapes selon la revendication 9, caractérisé en ce que les deux soupapes de précommande (16, 17) sont disposées dans le prolongement axial de la soupape principale (15).
  11. Agencement de soupapes selon la revendication 10, caractérisé en ce que les deux soupapes de précommande (16, 17) sont disposées de manière à se suivre dans le sens longitudinal de la soupape principale (15).
  12. Agencement de soupapes selon l'une quelconque des revendications 1 à 11, caractérisé en ce que la soupape principale (15) présente une étendue longitudinale avec un axe longitudinal (18) et dispose sur un côté longitudinal d'embouchures (33) de canaux de soupape principale internes (32), la soupape principale (15) présentant de plus un sens de hauteur (46) orthogonal au côté longitudinal présentant les embouchures (33) et un sens de largeur (47) orthogonal au sens de la hauteur (46) et à l'axe longitudinal (18), les deux soupapes de précommande (16, 17) étant disposées de manière à se suivre dans le sens axial de l'axe longitudinal (18) de la soupape principale (15) sur un même côté avant (44) de la soupape principale (15) et disposant respectivement d'une largeur qui correspond au maximum à la largeur de la soupape principale (15).
  13. Agencement de soupapes selon l'une quelconque des revendications 1 à 12, caractérisé en ce que les deux soupapes de précommande (16, 17) sont raccordées côté entrée ensemble à un même canal d'alimentation de précommande (62) s'étendant à l'intérieur de l'unité de soupape (3), par lequel le fluide d'entraînement servant à l'alimentation fluidique de l'organe de soupape principale (26) peut être amené aux soupapes de précommande (16, 17).
  14. Agencement de soupapes selon l'une quelconque des revendications 1 à 13, caractérisé en ce que les deux soupapes de précommande (16, 17) sont raccordées ensemble à un même canal de décharge de précommande (63) s'étendant à l'intérieur de l'unité de soupape (3), par lequel le fluide d'entraînement à évacuer lors de la décompression de l'organe de soupape principale (26) peut être évacué.
  15. Agencement de soupapes selon l'une quelconque des revendications 1 à 14, caractérisé en ce que l'organe de soupape principale (26) présente une surface d'entraînement (38) qui délimite une chambre d'entraînement (42) qui peut être alimentée en un fluide d'entraînement ou décompressée au choix en commandant les deux soupapes de précommande (16, 17), chaque soupape de précommande (16, 17) communiquant de manière appropriée pour cette alimentation fluidique ou décompression indépendamment de l'autre soupape de précommande (17, 16) par un canal de travail de précommande (43a, 43b) propre avec la chambre d'entraînement (42).
  16. Agencement de soupapes selon l'une quelconque des revendications 1 à 15, caractérisé en ce qu'il présente plusieurs unités de soupape (2) disposées les unes à côté des autres de manière à se suivre dans un sens d'alignement, dont au moins une unité de soupape (3) dispose de deux soupapes de précommande (16, 17) appropriées à l'alimentation fluidique et/ou à la décompression simultanée et dans le même sens de l'organe de soupape principale (26) et qui sont avantageusement montées de manière détachable à un support de soupape (5).
EP20110004507 2011-06-01 2011-06-01 Agencement de vannes Not-in-force EP2530334B1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015001788U1 (de) 2015-03-06 2015-04-15 Festo Ag & Co. Kg Baugruppe mit mindestens einer Schraubenverliersicherungseinrichtung

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Publication number Priority date Publication date Assignee Title
US9459630B2 (en) 2013-10-22 2016-10-04 Fisher Controls International Llc System and method for controlling a remote valve
ITUB201559695U1 (it) * 2015-07-30 2017-01-30 Metal Work Spa Sistema di elettrovalvole con basi modulari.
ITUB20152644A1 (it) 2015-07-30 2017-01-30 Metal Work Spa Sistema di elettrovalvole a portata maggiorata.

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DE3924437A1 (de) 1989-07-24 1991-01-31 Allweiler Ag Druckbegrenzungsventil
JP3590762B2 (ja) * 2000-09-05 2004-11-17 Ｓｍｃ株式会社 位置検出機能を備えたマニホールドバルブ
KR101342718B1 (ko) 2007-05-12 2013-12-18 페스토 악티엔 게젤샤프트 운트 코. 카게 다른 유량 카테고리에 대한 밸브 장치
DE102008060650A1 (de) * 2008-12-05 2010-06-10 Festo Ag & Co. Kg Ventil mit Endlagen-Dämpfungseinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015001788U1 (de) 2015-03-06 2015-04-15 Festo Ag & Co. Kg Baugruppe mit mindestens einer Schraubenverliersicherungseinrichtung

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