EP2186937A1 - Valve assembly for metering small quantities of media, in particular small quantity metering device and application device for applying application medium to a mobile sheet of material - Google Patents
Valve assembly for metering small quantities of media, in particular small quantity metering device and application device for applying application medium to a mobile sheet of material Download PDFInfo
- Publication number
- EP2186937A1 EP2186937A1 EP09174327A EP09174327A EP2186937A1 EP 2186937 A1 EP2186937 A1 EP 2186937A1 EP 09174327 A EP09174327 A EP 09174327A EP 09174327 A EP09174327 A EP 09174327A EP 2186937 A1 EP2186937 A1 EP 2186937A1
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- European Patent Office
- Prior art keywords
- valve
- flow
- flow divider
- valve device
- inflow
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/0073—Accessories for calenders
- D21G1/0093—Web conditioning devices
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/34—Construction or arrangement of spraying pipes
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/50—Spraying or projecting
Definitions
- the invention relates to a valve arrangement for the metering of very small amounts of media, in particular Kleengmengendosier illusion comprising at least one inlet, connectable to a consumer flow and at least one arranged between inlet and outlet valve means for controlling the flow rate of a medium.
- calendering In the production of fibrous webs in the form of paper or board webs, depending on the requirements for the quality properties of the surface, a refining process, referred to as calendering, follows.
- the fibrous web is thereby guided in a calendering device through one or more smoothing gaps connected in series, wherein each of the individual smoothing gaps is formed by two heated and specially coated smoothing rolls, which are pressed together by means of a pressure.
- the surface of the fibrous web, in particular the fiber mat can be smoothed and the gloss can be increased.
- the moisture content of the fibrous web is reduced considerably.
- an input moisture content of about 11% during satin finishing is reduced to a final moisture content of 4-6%, the required final moisture content determining the input moisture content to be specified.
- the final moisture content is of crucial importance for later printability and influences the black satin, which in turn depends on the input moisture content. If the initial moisture content can be reduced, the black satin reduces and the paper quality is increased.
- the fibrous web has almost the required final dry content already on entering the calender. Due to the reduced input moisture content and the further reduction during the calendering a targeted rewetting of the fibrous web, in particular the fiber mat, then necessarily required to compensate for the loss of moisture during calendering.
- steam dampers are currently used in the calendering device to compensate for the loss of moisture during the process.
- the application of steam alone can not compensate for the loss of moisture. Therefore, additional water is metered onto the surface of the fibrous web.
- the quantities required are very small quantities, for the dosage of which corresponding valve devices are used, for example needle nozzles which, however, clog very easily due to the dimensioning of the individual flow cross sections. Another disadvantage of such needle nozzles is the high production costs, since minor tolerance deviations lead to significant changes in the dosing result.
- Needle nozzles are used in addition to the installation in calenders in other sections of the manufacturing process or the refining of fibrous webs to control flow rates for nozzles for targeted rewetting of the fibrous web to improve the moisture profile on a fibrous web and the curl tendency, ie curl of the dried To reduce fibrous web at the end of the dryer section.
- Such nozzle dampers are for example from the document DE 101 60 725 A1 previously known, which include to compensate for pressure fluctuations pulsation damper between the nozzle and the valve means for controlling the flow rate. For rewetting water is applied. In the case of high-speed machines, the dosage of the required amount of fluid is generally not a problem.
- the invention is therefore based on the object, a device, in particular a valve assembly for the accurate metering of very small amounts, especially Kleinstmengendosierleaned of fluids such as water or steam, a water vapor mixture or other media in fluidized form such that the genanten disadvantages are avoided, in particular the dosage can be done with high accuracy while reducing the manufacturing costs for the metering device and the tendency to clog.
- the valve arrangement according to the invention should be suitable in particular for the metering of application media for application to movable material webs in the range of 0-5 I / h.
- the solution according to the invention the smallest dose of any fluid or pasty medium, in particular any chemical.
- a valve arrangement for metering minute quantities of media comprising at least one inlet and a drain connectable to a consumer and at least one arranged between inlet and outlet valve means for controlling the flow rate of a medium
- the valve means a flow divider for dividing the volume flow is connected downstream in at least two partial volume flows, which is constructed such that a first partial flow to the outlet and the second partial flow in the bypass are led to the drain.
- the flow divider comprises preferably at least one inflow and two outflows, which are coupled together to form two flow paths.
- the valve arrangement thereby enables a predosing of a larger volume flow and a subsequent fine metering by splitting off the actually required lower volume flow from the volume flow present after the predosing. Due to the two-step approach, the individual functional units can be manufactured more easily and with lower manufacturing accuracy.
- the fine metering via the flow divider takes place as a function of the flow paths which can be written on via these, in particular their length and flow cross section. As a result, metering is achieved by dividing the pre-metered volume flow in a fixed ratio of the partial flows to be generated relative to one another.
- the pre-metering valve device comprises at least one inflow, which forms the inlet of the valve arrangement or can be connected thereto, a drain connectable to the flow divider and means for controlling the volume flow.
- the funds can be designed in many forms. The design is carried out depending on the valve devices used.
- valve device and flow divider are formed by separate units, wherein the at least one outflow of the valve device is connected to the at least one inflow of the flow divider.
- the connection can be made via external connection lines or by direct contact or direct coupling can be produced by flanging the individual functional units together.
- the first possibility offers the advantage of a spatially separated arrangement, which makes sense in some applications for reasons of space.
- the second option offers the advantage of creating an inexpensive and compact functional unit from standardized individual components with short flow paths.
- valve device and the flow divider are designed as an integral structural unit.
- this embodiment is a special design, due to the integration in a common housing, a high functional concentration can be achieved.
- the inlet of the valve arrangement is formed by the inlet of the valve device, the inflow of the flow divider from the outlet of the valve device and the outlet of the valve arrangement from the first outlet of the flow divider.
- a housing which may be of any design, but preferably present in the solid profile and in which at least one opening to the outer periphery, in particular one of the front side blind bore, a first, opening from the outer periphery of the housing in the blind bore and the inlet of the valve assembly forming Duchgangsö réelle and a second, from the outer circumference of the housing in the blind bore opening and downstream in the flow direction of the first passage opening and the flow-forming passage opening are incorporated.
- the valve device can be designed in a simple manner in the form of a piston element forming a valve seat with the first passage opening.
- rotationally symmetrical components are selected as the housing, in which the blind bore is incorporated in a simple manner in the direction of relationship parallel to the center axis.
- the second outflow of the flow divider is connected to the discharge of the unneeded flow medium either with the supply for the flow medium or a separate flow media supply system, thus ensuring a recyclability.
- the second drain via a return to the inlet of the Connected valve assembly.
- the coupling can take place via external lines, ie lines which are guided outside the valve arrangement, or, in a particularly advantageous embodiment, through channels or lines integrated in the housing of the flow divider and optionally the valve device.
- the individual flow paths between the inflow and the outflows of the flow divider are dimensioned to one another depending on their distribution ratio. Both may have the same design, geometry or length and flow cross section, or different. It is crucial that the flow areas at the outlet are lower than in the inflow.
- the diameter ratio between the individual outflows and the inflow of the flow divider is in each case in the range between 1: 2 and 1:10, particularly preferably 1: 4.
- the flow cross section of the first flow path or outflow is preferably less than that of the second flow path.
- a pulsation damper is preferably provided.
- valve arrangement can be used for metering application medium in an application device for applying it to a movable material web, in particular a fibrous web, comprising at least one nozzle with at least one inlet for application medium.
- Such valve arrangements allow due to their small size and the possibility of metering of very small amounts with a throughput in the range of 0.1 to 51 / h application of application medium with high accuracy even in very small quantities at low machine speeds.
- the nozzle can also be designed as a multi-material nozzle.
- the multi-fluid nozzle includes at least a first inlet for coupling to a first medium supply unit and a second inlet for coupling to a second medium.
- the media may be water, auxiliaries, coating compositions, chemicals, etc.
- a sputtering gas can also be added. All media can be metered in each case via a valve arrangement according to the invention.
- a plurality of individual nozzles which are supplied with the respectively same application medium via at least one valve arrangement, are preferably arranged across the width of a material web to be treated and moved.
- the valve arrangements can be controlled individually or in groups.
- FIG. 1a illustrates in schematic highly simplified representation of the basic structure and the basic principle of an inventively designed valve assembly 1, which is constructed and dimensioned so that it is suitable even the smallest amounts of flow media, in particular fluids in the form of liquids, gases, steam or a mixture of these to dose, free of the risk of clogging within the valve assembly 1.
- the valve assembly 1 is particularly suitable to be connected upstream of a consumer, in particular a nozzle 2.
- the valve assembly 1 comprises at least one inlet 3 and a drain 4, wherein the drain 4 at least indirectly, that is directly or via further intermediate components and / or metering devices with the nozzle 2 is connectable. Between the inlet 3 and the outlet 4 at least one valve device 5 is arranged, which serves to control the flow rate.
- the inflow 14 of the valve device 5 is formed by the inlet 3 of the valve assembly 1 or is connected thereto.
- the valve device 5 downstream in the direction of flow is a flow divider 6.
- This is a valve which divides the output from the valve device 5 volume flow V in at least two partial streams TS1, TS2, which are determined in advance.
- the flow divider 6 is connected downstream of the valve device 5 in the flow direction within the valve arrangement 1.
- Valve device 5 and 6 flow divider are connected in series.
- the flow divider 6 comprises at least one inflow 8 and two outflows 9 and 10, wherein the outflow 9 forms the outlet 4 of the valve arrangement 1.
- the inflow 8 is formed by the drain 15 of the valve device 5 or is connected thereto.
- the flow path in the flow divider 6 is divided into two partial flow paths, which are formed by channels and lines and which are denoted by 11 and 12.
- the first part flow path 11 is connected to the first outflow 9, which forms the outlet 4, while the second flow path 12 connects the inflow 8 to the outflow 10.
- the first outflow 9 is connected to the nozzle 2 by way of example
- the second outflow 10 is preferably connected in a first embodiment to an external line 7, according to a particularly advantageous embodiment in FIG FIG. 1b with a return line 13, which the drain 10 in a closed circuit with the inlet 3, in particular the valve device 5 connects.
- the individual flow paths 11 and 12 are formed according to the invention differently in terms of their passage cross-section and / or the flow path length, that is, the parameters characterizing the flow path 11, 12.
- the passage cross-section of the first flow path 11 is smaller than the second flow path 12.
- the smaller volume flow in the form of the partial volume flow TS1 which is guided via the first flow path 11 to the drain 9 and preferably to the nozzle 2, serves to supply this and thus when used for applying application media on webs order this or the rewetting of a fibrous web.
- the further second partial volume flow TS2 is discharged and, in a particularly advantageous embodiment in a closed circuit, here via the return line 13, the system, in particular the valve device 5 fed again.
- the unused order quantity of volume flow which corresponds to the partial volume flow TS2, is thus discharged in the bypass to the nozzle 2, in particular via the second flow path 12. Due to the large passage cross-section, there is no risk of occlusion. Furthermore, the entire valve assembly 1 can be manufactured with lower manufacturing tolerances. It is crucial that the corresponding dosage of the valve assembly 1 via a kind of predosing by providing a certain flow rate per unit time in the valve device 5 and the downstream splitting of this larger volume flow V in each smaller partial volume flows TS1 and TS2 takes place, which actually to the order on the nozzle 2 required volume flow is diverted in the form of the partial volume flow TS1 from the large volume flow V, while the remaining partial volume flow TS2 is supplied to the system again.
- FIGS. 1a and 1b illustrate the basic principle of the construction of a valve assembly 1 according to the invention and their function. Concrete constructive Implementations and arrangements of the individual components are exemplary in the following FIGS. 2 to 5 played.
- FIG. 2 illustrates in a schematic simplified representation of a first structural design of a valve assembly 1, in which the individual functional units valve device 5 and flow divider 6 are formed by separate units, which are interconnected to inventively designed valve assembly 1.
- the flow divider 6 is fluidly connected to the valve device 5, here via a corresponding external connecting line 16 which couples the outflow 15 of the valve device 5 and the inflow 8 of the flow divider 6 with each other.
- This allows a spatial separation of the valve device 5, in particular pilot valve device, and the main valve device in the form of the flow divider 6 done.
- the external connecting line 16 can be dispensed with and the outlet 15 of the valve device 5 is connected directly to the inflow 8 of the flow divider 6.
- the outlet 15 of the valve device 5 and the inflow 8 of the flow divider 6 are then to be arranged in alignment with each other.
- the downstream flow divider 6 is exemplified in the illustrated case by a housing 17 in which the second flow path 12 in the form of a passage, preferably through the housing 17 to the respective end faces 17.1, 17.2 opens, extends. Aligned at an angle to the second flow path 12 is the first flow path 11 which extends from the outer periphery 18 of the housing 17 in the direction of the passage opening into this opening.
- the first flow path 11 opens at the outer periphery 18 in the circumferential direction, while the second flow path 12 connects the two end faces 17.1 and 17.2 of the housing 17, wherein the respective end faces 17.1 and 17.2 in this case simultaneously as a flange or so-called pad for the Valve device 5 and / or connecting lines, channels, a nozzle can act.
- the housing 17 is preferably designed as a rotationally symmetrical body or else with a different cross-sectional profile.
- the inflow 8 and the outflow 10 are arranged in alignment with each other and executed with different profile cross-section.
- Inflow 8 and outflow 10 are formed by the passage opening, while the first flow path 11 is formed perpendicular thereto in the form of a channel extending from the outer periphery 18 towards the second flow path 12.
- the two flow paths 11, 12 descriptive channels, in particular their design and dimensioning, a defined distribution ratio between the transportable in these partial volume flows TS1 and TS2 is given.
- the branch is formed at the connection region of the first flow path 11 to the second flow path 12.
- drain 9 are connected to the nozzle 2 directly or via an external connection line.
- these statements apply to the coupling of the external connection line 7, in particular for the purpose of recycling.
- FIG. 2 illustrated embodiment can be formed in a simple manner from existing components with its own housing, its own connections by joining the functional unit valve assembly 1.
- FIG. 3 a particularly compact space-saving arrangement with integral construction of valve device 5 and flow divider.
- FIG. 4 clarifies a further development according to FIG. 3 with integrated return channel 13 between drain 10 and inlet 3.
- Valve device 5 and 6 flow divider on a common housing 17, in which both the valve means 5 and the flow divider 6 are integrated.
- the housing 17 is in the illustrated case by at least two terminals, in FIG. 3 characterized by three connections.
- the first is formed by the inlet 3, the second of the drain 4, which is connectable to the nozzle 2, and the third of the drain 10.
- the valve device 5 for controlling the flow rate is realized here in the simplest case via a valve piston which can be controlled via the valve pilot control, which, depending on the position, either completely closes the passage cross-section to the inlet 3 or releases it.
- the piston forms a valve seat 19 with the housing 17.
- the inlet 3 or the line coupled thereto is preferably arranged perpendicular to the channel, which is formed by the second partial flow path 12. In a particularly advantageous manner, the inlet 3 opens directly into the drain 10 or the channel connecting the inflow 8 to the drain 10 via the second partial flow path 12. This one is in FIG.
- the first flow path 11 and the inlet 3 opens to the blind bore extending through the housing 17.
- both are formed by channels which are aligned perpendicular to the blind bore and extend from the outer periphery 18 of the housing 17 to this.
- FIG. 4 shows a particularly advantageous development accordingly FIG. 3 , in which the external connecting line 7 is integrated as a return line 13 in the valve assembly 1, in particular through the housing 17 extends.
- valve device 5 With regard to the execution of the valve device 5 there are a variety of possibilities. This can be like in FIG. 2 represented externally or according to the FIGS. 3 to 4 be carried out in an integral form with the flow divider 6.
- This may be a needle valve, a pulse width modulated valve, for example, a clocking 2/2-way valve or, for example, a 2/2-way valve free of a clock or its binary connection to the stepwise flow control.
- ratios between the passage cross sections of the first and second flow paths to each other a variety of ways.
- the relationships between the cross sections of the outflows 9, 10 and the inflow to each other are preferably carried out in the range between 1:10 and 1: 2, more preferably 1: 4 to each other.
- FIGS. 5a to 5d show in a schematic simplified representation of the basic structure of inventive valve assemblies 1 in combination with a nozzle 2, wherein FIG. 5a a dissolved construction of individual coupled components valve device 5, 6 and nozzle 2 flow divider. These can be arranged spatially apart from each other or concentrated, for example by flanging to each other.
- FIG. 5b shows an embodiment with structural integration of nozzle 2 and flow divider 6 in a structural unit and combination with a valve device.
- FIG. 5c shows an alternative embodiment with summary of valve device 5 and flow divider 6 in a structural unit, which can be combined with the nozzle 2.
- FIG. 5d shows an embodiment with integration of valve device 5, flow divider 6 and nozzle 2 in a structural unit. The latter possibility is characterized by a high functional concentration and small space requirement.
- Valve arrangements 1 designed according to the invention can be used in a particularly advantageous application for supplying nozzles 2, in particular in the form of multi-substance nozzles.
- the individual components, preferably the entire valve assembly 1 are formed from a non-rusting material, in particular stainless steel, for reasons of preventing corrosion.
- FIG. 6 exemplifies an embodiment of a nozzle 2 in the form of a two-component nozzle.
- This comprises at least two inlets 20.1, 20.2, which are supplied via a valve arrangement 1.1, 1.2 with a medium.
- the media may be liquid or pasty application media, in particular starch, Pigments containing suspensions act.
- water or other auxiliaries which are mixed with the application medium.
- the individual processes 4.1 and 4.2 of the individual valve arrangement 1.1, 1.2 are connected to the inlets 20.1, 20.2 of the nozzle 2.
- FIG. 7 illustrates a connection of individual valve assemblies 1.1 to 1.n, which in turn may be coupled with nozzles not shown here, to a central supply line 21.
- the individual valve assemblies 1.1 to 1.n are to ensure a corresponding cross-job profile when applying coating medium on a movable web preferably individually or in groups controllable.
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Abstract
Description
Die Erfindung betrifft eine Ventilanordnung zur Dosierung von Kleinstmengen von Medien, insbesondere Kleinstmengendosiereinrichtung, umfassend zumindest einen Zulauf, einen mit einem Verbraucher verbindbaren Ablauf und zumindest eine zwischen Zu- und Ablauf angeordnete Ventileinrichtung zur Steuerung des Volumenstromes eines Mediums.The invention relates to a valve arrangement for the metering of very small amounts of media, in particular Kleengmengendosiereinrichtung comprising at least one inlet, connectable to a consumer flow and at least one arranged between inlet and outlet valve means for controlling the flow rate of a medium.
Bei der Herstellung von Faserstoffbahnen in Form von Papier- oder Kartonbahnen schließt sich in Abhängigkeit der Anforderungen an die Qualitätseigenschaften der Oberfläche ein Veredelungsprozess an, der als Satinage bezeichnet wird. Die Faserstoffbahn wird dabei in einer Kalandereinrichtung durch einen oder mehrere hintereinander geschaltete Glättspalte geführt, wobei jeder der einzelnen Glättspalte von zwei beheizten und speziell beschichteten Glättwalzen gebildet wird, die mittels eines Druckes zusammengepresst werden. Dadurch kann die Oberfläche der Faserstoffbahn, insbesondere die Fasermatte geglättet und der Glanz erhöht werden. Bei der Satinage und bedingt durch die Einflüsse der vorherrschenden Temperaturen und des aufgebrachten Druckes reduziert sich jedoch der Feuchtegehalt der Faserstoffbahn erheblich. Beispielhaft reduziert sich ein Eingangsfeuchtegehalt von ca. 11 % beim Satinieren auf einen Endfeuchtgehalt von 4 - 6%, wobei der erforderliche Endfeuchtegehalt den vorzugebenden Eingangsfeuchtegehalt bestimmt. Der Endfeuchtegehalt ist jedoch für die spätere Bedruckbarkeit von entscheidender Bedeutung und beeinflusst die Schwarzsatinage, welche jedoch wiederum vom Eingangsfeuchtegehalt abhängig ist. Kann der Eingangsfeuchtegehalt reduziert werden, reduziert sich die Schwarzsatinage und die Papierqualität wird erhöht.In the production of fibrous webs in the form of paper or board webs, depending on the requirements for the quality properties of the surface, a refining process, referred to as calendering, follows. The fibrous web is thereby guided in a calendering device through one or more smoothing gaps connected in series, wherein each of the individual smoothing gaps is formed by two heated and specially coated smoothing rolls, which are pressed together by means of a pressure. As a result, the surface of the fibrous web, in particular the fiber mat can be smoothed and the gloss can be increased. However, in the case of calendering and due to the influences of the prevailing temperatures and the applied pressure, the moisture content of the fibrous web is reduced considerably. By way of example, an input moisture content of about 11% during satin finishing is reduced to a final moisture content of 4-6%, the required final moisture content determining the input moisture content to be specified. However, the final moisture content is of crucial importance for later printability and influences the black satin, which in turn depends on the input moisture content. If the initial moisture content can be reduced, the black satin reduces and the paper quality is increased.
Zur weiteren Reduzierung der Schwarzsatinage ist es daher gewünscht, dass die Faserstoffbahn bereits beim Eintritt in die Kalandereinrichtung annähernd den erforderlichen Endtrockengehalt besitzt. Aufgrund des verringerten Eingangsfeuchtegehaltes und der weiteren Reduzierung während der Satinage ist dann zwingend ein gezieltes Nachfeuchten der Faserstoffbahn, insbesondere der Fasermatte, erforderlich, um den Feuchtigkeitsverlust während des Satinierens auszugleichen. Dabei werden zur Kompensation des Feuchtigkeitsverlustes während des Prozesses gegenwärtig Dampffeuchter in der Kalandereinrichtung eingesetzt. Allein über das Aufbringen von Dampf kann jedoch der Feuchtigkeitsverlust nicht ausgeglichen werden. Daher wird zusätzlich Wasser dosiert auf die Oberfläche der Faserstoffbahn aufgebracht. Bei den erforderlichen Mengen handelt es sich jedoch um Kleinstmengen, zu deren Dosierung entsprechende Ventileinrichtungen eingesetzt werden, beispielsweise Nadeldüsen, die jedoch aufgrund der Dimensionierung der einzelnen Durchflussquerschnitte sehr leicht verstopfen. Ein weiterer Nachteil derartiger Nadeldüsen besteht im hohen Fertigungsaufwand, da geringfügige Toleranzabweichungen zu erheblichen Veränderungen im Dosierergebnis führen.To further reduce the black satin, it is therefore desirable that the fibrous web has almost the required final dry content already on entering the calender. Due to the reduced input moisture content and the further reduction during the calendering a targeted rewetting of the fibrous web, in particular the fiber mat, then necessarily required to compensate for the loss of moisture during calendering. At the same time steam dampers are currently used in the calendering device to compensate for the loss of moisture during the process. However, the application of steam alone can not compensate for the loss of moisture. Therefore, additional water is metered onto the surface of the fibrous web. However, the quantities required are very small quantities, for the dosage of which corresponding valve devices are used, for example needle nozzles which, however, clog very easily due to the dimensioning of the individual flow cross sections. Another disadvantage of such needle nozzles is the high production costs, since minor tolerance deviations lead to significant changes in the dosing result.
Nadeldüsen werden neben dem Einbau in Kalandereinrichtungen auch in anderen Abschnitten des Herstellungsprozesses oder der Veredelung von Faserstoffbahnen zur Steuerung von Volumenströmen für Düsen zur gezielten Rückbefeuchtung der Faserstoffbahn eingesetzt, um das Feuchtequerprofil an einer Faserstoffbahn verbessern zu können und die Curl-Neigung, d.h. Rollneigung der getrockneten Faserstoffbahn am Ende der Trockenpartie zu reduzieren. Derartige Düsenfeuchter sind beispielsweise aus der Druckschrift
Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung, insbesondere eine Ventilanordnung zur genauen Dosierung von Kleinstmengen, insbesondere Kleinstmengendosiereinrichtung von Fluiden, wie beispielsweise Wasser beziehungsweise Dampf, ein Wasserdampfgemisch oder anderer Medien in fluidisierter Form derart weiterzuentwickeln, dass die genanten Nachteile vermieden werden, insbesondere die Dosierung mit hoher Genauigkeit bei gleichzeitiger Verringerung des Fertigungsaufwandes für die Dosiereinrichtung und der Verstopfungsneigung erfolgen kann. Dabei soll die erfindungsgemäße Ventilanordnung insbesondere für die Dosierung von Auftragsmedien für den Auftrag auf bewegbare Materialbahnen im Bereich von 0 - 5 I/h geeignet sein. Ferner soll mit der erfindungsgemäßen Lösung auch die Kleinstmengendosierung jedes beliebigen fluiden oder pastösen Mediums, insbesondere jeder beliebigen Chemikalie möglich sein.The invention is therefore based on the object, a device, in particular a valve assembly for the accurate metering of very small amounts, especially Kleinstmengendosiereinrichtung of fluids such as water or steam, a water vapor mixture or other media in fluidized form such that the genanten disadvantages are avoided, in particular the dosage can be done with high accuracy while reducing the manufacturing costs for the metering device and the tendency to clog. In this case, the valve arrangement according to the invention should be suitable in particular for the metering of application media for application to movable material webs in the range of 0-5 I / h. Furthermore, should be possible with the solution according to the invention, the smallest dose of any fluid or pasty medium, in particular any chemical.
Die erfindungsgemäße Lösung ist durch die Merkmale der Ansprüche 1 und 21 charakterisiert. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen beschrieben.The solution according to the invention is characterized by the features of
Eine Ventilanordnung zur Dosierung von Kleinstmengen von Medien, umfassend zumindest einen Zulauf und einen mit einem Verbraucher verbindbaren Ablauf und zumindest eine zwischen Zu- und Ablauf angeordnete Ventileinrichtung zur Steuerung des Volumenstromes eines Mediums ist erfindungsgemäß dadurch charakterisiert, dass der Ventileinrichtung ein Stromteiler zur Aufteilung des Volumenstromes in zumindest zwei Teilvolumenströme nachgeschaltet ist, der derart aufgebaut ist, dass ein erster Teilvolumenstrom zum Ablauf und der zweite Teilvolumenstrom im Bypass zum Ablauf geführt werden. Der Stromteiler umfasst dazu vorzugsweise zumindest einen Zufluss und zwei Abflüsse, die unter Ausbildung zweier Strömungswege miteinander gekoppelt sind.A valve arrangement for metering minute quantities of media, comprising at least one inlet and a drain connectable to a consumer and at least one arranged between inlet and outlet valve means for controlling the flow rate of a medium is inventively characterized in that the valve means a flow divider for dividing the volume flow is connected downstream in at least two partial volume flows, which is constructed such that a first partial flow to the outlet and the second partial flow in the bypass are led to the drain. The flow divider comprises preferably at least one inflow and two outflows, which are coupled together to form two flow paths.
Die Ventilanordnung ermöglicht dadurch eine Vordosierung eines größeren Volumenstromes und eine dieser nachgeordnete Feindosierung durch Abspaltung des tatsächlich erforderlichen geringeren Volumenstromes vom nach der Vordosierung vorliegenden Volumenstrom. Durch die zweistufige Vorgehensweise können die einzelnen Funktionseinheiten einfacher und mit geringerer Fertigungsgenauigkeit hergestellt werden. Die Feindosierung über den Stromteiler erfolgt als Funktion der über diesen beschreibbaren Strömungswege, insbesondere deren Länge und Durchflussquerschnitt. Dadurch wird eine Dosierung durch Aufteilung des vordosierten Volumenstromes in einem festen Verhältnis der zu erzeugenden Teilströme zueinander erzielt. Aufgrund der Abhängigkeit der Größe der Teilströme von den Verhältnissen der Strömungswege zueinander können die diese bildenden Kanäle und Leitungen mit größeren Strömungsquerschnitten ausgeführt werden, so dass die Gefahr einer Zusetzung dieser nicht mehr besteht, womit die Störanfälligkeit verringert und die Verfügbarkeit derartiger Ventilanordnungen erheblich erhöht werden kann.The valve arrangement thereby enables a predosing of a larger volume flow and a subsequent fine metering by splitting off the actually required lower volume flow from the volume flow present after the predosing. Due to the two-step approach, the individual functional units can be manufactured more easily and with lower manufacturing accuracy. The fine metering via the flow divider takes place as a function of the flow paths which can be written on via these, in particular their length and flow cross section. As a result, metering is achieved by dividing the pre-metered volume flow in a fixed ratio of the partial flows to be generated relative to one another. Due to the dependence of the size of the partial flows of the ratios of the flow paths to each other, these forming channels and lines can be made with larger flow cross-sections, so that the risk of clogging this no longer exists, whereby the susceptibility reduced and the availability of such valve arrangements can be significantly increased ,
Die die Vordosierung vornehmende Ventileinrichtung umfasst zumindest einen, den Zulauf der Ventilanordnung bildenden oder mit diesem verbindbaren Zufluss, einen mit dem Stromteiler verbindbaren Abfluss und Mittel zur Steuerung des Volumenstromes. Die Mittel können vielgestaltig ausgeführt sein. Die Ausführung erfolgt in Abhängigkeit der eingesetzten Ventileinrichtungen.The pre-metering valve device comprises at least one inflow, which forms the inlet of the valve arrangement or can be connected thereto, a drain connectable to the flow divider and means for controlling the volume flow. The funds can be designed in many forms. The design is carried out depending on the valve devices used.
Bezüglich der konstruktiven Ausführung von Ventileinrichtung und Stromteiler sowie deren Kopplung miteinander bestehen grundsätzlich mehrere Möglichkeiten. Gemäß einer ersten Möglichkeit werden die Ventileinrichtung und der Stromteiler von separaten Baueinheiten gebildet, wobei der zumindest eine Abfluss der Ventileinrichtung mit dem zumindest einen Zufluss des Stromteilers verbunden ist. Die Verbindung kann in Abhängigkeit der räumlichen Anordnung zueinander über externe Verbindungsleitungen oder aber durch direkten Kontakt beziehungsweise direkte Kopplung durch Anflanschen der einzelnen Funktionseinheiten aneinander hergestellt werden. Die erste Möglichkeit bietet den Vorteil einer räumlich getrennten Anordnung, welche in manchen Anwendungsfällen aus Platzgründen sinnvoll ist. Die zweite Möglichkeit bietet den Vorteil der Schaffung einer preiswerten und kompakten Funktionseinheit aus standardisierten Einzelkomponenten mit kurzen Strömungswegen.With regard to the structural design of valve device and flow divider and their coupling with each other, there are basically several options. According to a first possibility, the valve device and the flow divider are formed by separate units, wherein the at least one outflow of the valve device is connected to the at least one inflow of the flow divider. Depending on the spatial arrangement, the connection can be made via external connection lines or by direct contact or direct coupling can be produced by flanging the individual functional units together. The first possibility offers the advantage of a spatially separated arrangement, which makes sense in some applications for reasons of space. The second option offers the advantage of creating an inexpensive and compact functional unit from standardized individual components with short flow paths.
In einer vorteilhaften zweiten Ausführung sind die Ventileinrichtung und der Stromteiler als integrale Baueinheit ausgeführt. Bei dieser Ausführung handelt es sich zwar um eine spezielle Ausführung, wobei jedoch aufgrund der Integration in einem gemeinsamen Gehäuse eine hohe Funktionskonzentration erzielbar ist. Der Zulauf der Ventilanordnung wird vom Zufluss der Ventileinrichtung, der Zufluss des Stromteilers vom Abfluss der Ventileinrichtung und der Ablauf der Ventilanordnung vom ersten Abfluss des Stromteilers gebildet. Konstruktiv ist ein Gehäuse vorgesehen, welches beliebig ausgeführt sein kann, vorzugsweise jedoch im Vollprofil vorliegt und in welches zumindest eine an den Außenumfang, insbesondere eine der Stirnseiten mündende Blindbohrung, eine erste, vom Außenumfang des Gehäuses in die Blindbohrung mündende und den Zulauf der Ventilanordnung bildende Duchgangsöffnung und eine zweite, vom Außenumfang des Gehäuses in die Blindbohrung mündende und in Durchflussrichtung der ersten Durchgangsöffnung nachgeordnete und den Ablauf bildende Durchgangsöffnung eingearbeitet sind. Die Ventileinrichtung kann in einfacher Weise in Form eines mit der ersten Durchgangsöffnung einen Ventilsitz bildenden Kolbenelementes ausgeführt werden. Vorzugsweise werden rotationsymmetrische Komponenten als Gehäuse gewählt, in welche die Blindbohrung in einfacher Weise in Richtung beziehungswise parallel zur Mittenachse eingearbeitet ist.In an advantageous second embodiment, the valve device and the flow divider are designed as an integral structural unit. Although this embodiment is a special design, due to the integration in a common housing, a high functional concentration can be achieved. The inlet of the valve arrangement is formed by the inlet of the valve device, the inflow of the flow divider from the outlet of the valve device and the outlet of the valve arrangement from the first outlet of the flow divider. Constructively, a housing is provided, which may be of any design, but preferably present in the solid profile and in which at least one opening to the outer periphery, in particular one of the front side blind bore, a first, opening from the outer periphery of the housing in the blind bore and the inlet of the valve assembly forming Duchgangsöffnung and a second, from the outer circumference of the housing in the blind bore opening and downstream in the flow direction of the first passage opening and the flow-forming passage opening are incorporated. The valve device can be designed in a simple manner in the form of a piston element forming a valve seat with the first passage opening. Preferably, rotationally symmetrical components are selected as the housing, in which the blind bore is incorporated in a simple manner in the direction of relationship parallel to the center axis.
Der zweite Abfluss des Stromteilers ist zur Abführung des nicht benötigten Strömungmediums entweder mit dem Vorrat für das Strömungsmedium oder einem separaten Strömungsmedienversorgungssystem verbindbar, um somit eine Wiederverwertbarkeit zu gewährleisten. In einer besonders vorteilhaften Ausführung ist der zweite Abfluss über einen Rücklauf mit dem Zulauf der Ventilanordnung verbunden. Die Kopplung kann über exterene Leitungen, d.h. Leitungen, die außerhalb der Ventilanordnung geführt sind, erfolgen oder aber in einer besonders vorteilhaften Ausführung durch im Gehäuse des Stromteilers und gegebenenfalls der Ventileinrichtung integrierte Kanäle beziehungsweise Leitungen. Diese Lösung bietet den Vorteil, dass die Rückführung integriert mit sehr kurzem Strömungsweg erfolgen kann.The second outflow of the flow divider is connected to the discharge of the unneeded flow medium either with the supply for the flow medium or a separate flow media supply system, thus ensuring a recyclability. In a particularly advantageous embodiment, the second drain via a return to the inlet of the Connected valve assembly. The coupling can take place via external lines, ie lines which are guided outside the valve arrangement, or, in a particularly advantageous embodiment, through channels or lines integrated in the housing of the flow divider and optionally the valve device. This solution has the advantage that the return can be integrated with a very short flow path.
Zur Dosierung ist es erforderlich, dass die einzelnen Strömungswege zwischen dem Zufluss und den Abflüssen des Stromteilers in Abhängigkeit ihres Aufteilungsverhältnisses zueinander dimensioniert werden. Dabei können beide hinsichlich Geometrie, Länge und Durchflußquerschnitt gleiche Ausführungen aufweisen oder aber unterschiedliche. Entscheidend ist, dass die Durchflußquerschnitte am Abfluss geringer als im Zufluss sind.For dosing, it is necessary that the individual flow paths between the inflow and the outflows of the flow divider are dimensioned to one another depending on their distribution ratio. Both may have the same design, geometry or length and flow cross section, or different. It is crucial that the flow areas at the outlet are lower than in the inflow.
In besonders vorteilhafterAusführung beträgt das Durchmesserverhältnis zwischen den einzelnen Abflüssen und dem Zufluss des Stromteilers jeweils im Bereich zwischen 1:2 und 1:10, besonders bevorzugt 1:4. Um sehr kleine Teilvolumenströme dosieren zu können, ist vorzugsweise der Durchflußquerschnitt des ersten Strömungsweges beziehungsweise Abflusses geringer als der des zweiten Strömungsweges.In a particularly advantageous embodiment, the diameter ratio between the individual outflows and the inflow of the flow divider is in each case in the range between 1: 2 and 1:10, particularly preferably 1: 4. In order to be able to dose very small partial volume flows, the flow cross section of the first flow path or outflow is preferably less than that of the second flow path.
Die Ventileinrichtung ist in der Funktion als Steuer- und/oder Regelventil vorzugsweise als zumindest eine der nachfolgenden Einrichtungen ausgeführt:
- ein Nadelventil
- ein pulsweitenmoduliertes Ventil, insbesondere taktendes 2/2-Wegeventil
- ein Wegeventil frei von einer Taktung
- a needle valve
- a pulse width modulated valve, in particular clocking 2/2-way valve
- a directional valve free of a clocking
Zum Ausgleich von Druckschwankungen ist vorzugsweise ein Pulsationsdämpfer vorgesehen.To compensate for pressure fluctuations, a pulsation damper is preferably provided.
Bei Zuordnung der Ventilanordnung zu einer Düse, ist es in einer besonders vorteilhaften Ausführung vorgesehen, dass der Stromteiler mit der Düse eine bauliche Einheit bildet beziehungsweise der Stromteiler in der Düse integriert wird. Die erfindungsgemäße Ventilanordnung kann zur Dosierung von Auftragsmedium in einer Auftragseinrichtung zum Auftragen dieses auf eine bewegbare Materialbahn, insbesondere Faserstoffbahn eingesetzt werden, umfassend zumindest eine Düse mit wenigstens einem Einlass für Auftragsmedium. Derartige Ventilanordnungen erlauben aufgrund ihrer geringen Größe und der Möglichkeit der Dosierbarkeit kleinster Mengen mit einem Durchsatz im Bereich von 0,1 bis 51/h ein Applikation von Auftragsmedium mit hoher Genauigkeit auch in kleinsten Mengen bei geringen Maschinengeschwindigkeiten.When assigning the valve assembly to a nozzle, it is provided in a particularly advantageous embodiment that the flow divider with the nozzle forms a structural unit or the flow divider is integrated in the nozzle. The valve arrangement according to the invention can be used for metering application medium in an application device for applying it to a movable material web, in particular a fibrous web, comprising at least one nozzle with at least one inlet for application medium. Such valve arrangements allow due to their small size and the possibility of metering of very small amounts with a throughput in the range of 0.1 to 51 / h application of application medium with high accuracy even in very small quantities at low machine speeds.
In einer vorteilhaften Ausführung kann die Düse auch als Mehrstoff-Düse ausgeführt sein. Bezüglich möglicher Ausgestaltungen dieser wird auf
Zur Gewährleistung eines mit dem Aufragsmedium zu erzielenden vordefinierten Querprofils sind vorzugsweise über die Breite einer zu behandelnden und bewegbaren Materialbahn eine Vielzahl einzelner Düsen, die über wenigste eine Ventilanordnung mit dem jeweils gleichen Auftragsmedium versorgt werden, angeordnet. Zur Versorgung sind die einzelnen Ventilanordnungen, insbesondere deren Zuläufe mit einer zentralen Versorgungsleitung gekoppelt. Die Ventilanordnungen sind einzeln oder in Gruppen ansteuerbar.To ensure a predefined transverse profile to be achieved with the application medium, a plurality of individual nozzles, which are supplied with the respectively same application medium via at least one valve arrangement, are preferably arranged across the width of a material web to be treated and moved. To supply the individual valve arrangements, in particular their inlets are coupled to a central supply line. The valve arrangements can be controlled individually or in groups.
Die erfindungsgemäße Lösung wird nachfolgend anhand von Figuren erläutert. Darin ist im Einzelnen folgendes dargestellt:
- Figur 1a
- verdeutlicht in schematisiert vereinfachter Darstellung den Grundaufbau und die Grundfunktion einer ersten Ausführung einer erfindungsgemäß ausgeführten Ventilanordnung;
- Figur 1b
- verdeutlicht in schematisiert vereinfachter Darstellung den Grundaufbau und die Grundfunktion einer zweiten Ausführung einer erfindungsgemäß ausgeführten Ventilanordnung;
Figur 2- verdeutlicht in schematisiert vereinfachter Darstellung eine mögliche konstruktive Ausführung einer erfindungsgemäß ausgeführten Ventilanordnung in aufgelöster Bauweise;
Figur 3- verdeutlicht in schematisiert vereinfachter Darstellung eine erste mögliche konstruktive Ausführung einer erfindungsgemäß ausgeführten Ventilanordnung in integraler Bauweise;
Figur 4- verdeutlicht in schematisiert vereinfachter Darstellung eine vorteilhafte Weiterentwicklung einer Ausführung gemäß
Figur 3 ; - Figuren 5a bis 5c
- verdeutlichen schematisiert vereinfacht Möglichkeiten der Zusammenfassung von Einzelkomponenten einer erfindungsgemäß ausgeführten Ventilanordnung;
Figur 6- verdeutlicht eine vorteilhafte Anwendung einer erfindungsgemäß ausgeführten Ventilanordnung in einer Mehrstoff-Düse;
Figur 7- verdeutlicht eine besonders vorteilhafte Anwendung erfindungsgemäß ausgeführter Ventilanordnungen zur Applikation von Auftragsmedium auf eine bewegbare Materialbahn, insbesondere Faserstoffbahn.
- FIG. 1a
- illustrates in a schematic simplified representation of the basic structure and the basic function of a first embodiment of an inventively designed valve assembly;
- FIG. 1b
- illustrates in a schematic simplified representation of the basic structure and the basic function of a second embodiment of an inventively designed valve assembly;
- FIG. 2
- illustrates in schematic simplified representation of a possible structural design of an inventively executed valve assembly in dissolved construction;
- FIG. 3
- illustrates in schematic simplified representation of a first possible structural design of an inventively designed valve assembly in an integral design;
- FIG. 4
- illustrates in schematic simplified representation of an advantageous development of an embodiment according to
FIG. 3 ; - FIGS. 5a to 5c
- schematically illustrate simplified ways of summarizing individual components of a valve arrangement according to the invention;
- FIG. 6
- illustrates an advantageous application of an inventively designed valve assembly in a multi-component nozzle;
- FIG. 7
- illustrates a particularly advantageous application according to the invention executed valve assemblies for application of application medium on a movable material web, in particular fibrous web.
Die
Die
Die
In vorteilhafter Weise kann dabei in der in
Die in der
Bezüglich der Ausführung der Ventileinrichtung 5 bestehen eine Vielzahl von Möglichkeiten. Diese kann wie in
Die
Demgegenüber verdeutlicht
Erfindungsgemäß ausgeführte Ventilanordnungen 1 können in besonders vorteilhafter Anwendung zur Versorgung von Düsen 2, insbesondere in Form von Mehrstoff-Düsen zum Einsatz gelangen. Beim Einsatz zur Versorgung von Düsen 2 beim Auftrag eines Auftragsmediums beziehungsweise eines Mediums zur Rückbefeuchtung der Faserstoffbahn werden aus Gründen der Korrosionsverhinderung die einzelnen Komponenten, vorzugsweise die gesamte Ventilanordnung 1, aus einem nicht rostenden Material, insbesondere Edelstahl ausgebildet.
Die erfindungsgemäße Lösung ist nicht auf die Ausführungen in den
- 11
- Ventilanordnungvalve assembly
- 22
- Düsejet
- 33
- ZulaufIntake
- 44
- Ablaufprocedure
- 55
- Ventileinrichtungvalve means
- 66
- Stromteilercurrent divider
- 77
- externe Versorgungsleitungexternal supply line
- 88th
- Zuflussinflow
- 99
- Abflussoutflow
- 1010
- Abflussoutflow
- 1111
- erster Strömungswegfirst flow path
- 1212
- zweiter Strömungswegsecond flow path
- 1313
- RückführleitungReturn line
- 1414
- Zuflussinflow
- 1515
- Abflussoutflow
- 1616
- Anschlussleitungconnecting cable
- 1717
- Gehäusecasing
- 17.1, 17.217.1, 17.2
- Stirnseitefront
- 1818
- Außenumfangouter periphery
- 1919
- Ventilsitzvalve seat
- 20.1, 20.220.1, 20.2
- Einlassinlet
- 2121
- zentrale Versorgungsleitungcentral supply line
- TS1, TS2TS1, TS2
- TeilvolumenstromPartial volume flow
- VV
- Volumenstromflow
Claims (26)
dadurch gekennzeichnet,
dass der Ventileinrichtung (5) ein Stromteiler (6) zur Aufteilung des Volumenstromes (V) des Mediums in zumindest zwei Teilvolumenströme (TS1, TS2) nachgeschaltet ist, der derart aufgebaut ist, dass ein erster Teilvolumenstrom (TS1) zum Ablauf (4, 4.1, 4.2) und der zweite Teilvolumenstrom (TS2) im Bypass zum Ablauf (4) geführt werden.Valve arrangement (1, 1.1 - 1.n) for dosing small quantities of media, comprising at least one inlet (3) and one, with a consumer connectable drain (4, 4.1, 4.2) and at least one between inlet and outlet (3, 4, 4.1, 4.2) arranged valve device (5) for controlling the volume flow (V) of the respective medium
characterized,
in that a flow divider (6) for dividing the volume flow (V) of the medium into at least two partial volume flows (TS1, TS2) is arranged downstream of the valve device (5) and constructed in such a way that a first partial volume flow (TS1) to the outlet (4, 4.1 , 4.2) and the second partial volume flow (TS2) are guided in the bypass to the outlet (4).
dadurch gekennzeichnet,
dass der Stromteiler (6) zumindest einen Zufluss (8) und zwei Abflüsse (9, 10) umfasst, die jeweils unter Ausbildung zweier Strömungswege (11, 12) miteinander gekoppelt sind.Valve arrangement (1, 1.1 - 1.n) according to claim 1,
characterized,
in that the flow divider (6) comprises at least one inflow (8) and two outflows (9, 10), which are each coupled to one another to form two flow paths (11, 12).
dadurch gekennzeichnet,
dass die Aufteilung des Volumenstromes (V) des Mediums in die Teilvolumenströme (TS1, TS2) als Funktion der Ausbildung und Dimensionierung der diesen zugeordneten Strömungswege (11, 12) beschreibbar ist.Valve arrangement (1, 1.1 - 1.n) according to claim 2,
characterized,
that the division of the volume flow (V) of the medium in the partial volume flows (TS1, TS2) as a function of training and dimensions of their associated flow paths (11, 12) is writable.
dadurch gekennzeichnet,
dass die Ventileinrichtung (5) zumindest einen, den Zulauf (3) der Ventilanordnung (1, 1.1 - 1.n) bildenden oder mit diesem verbindbaren Zufluss (14), einen mit dem Stromteiler (6) verbindbaren Abfluss (9, 10) und Mittel zur Steuerung des Volumenstromes aufweist.Valve arrangement (1, 1.1 - 1.n) according to one of claims 1 to 3,
characterized,
in that the valve device (5) comprises at least one inflow (14) forming the inflow (3) of the valve arrangement (1, 1.1-1.n), a drain (9, 10) connectable to the flow divider (6), and Having means for controlling the flow rate.
dadurch gekennzeichnet,
dass die Ventileinrichtung (5) und der Stromteiler (6) von separaten Baueinheiten gebildet werden, wobei der zumindest eine Abfluss (15) der Ventileinrichtung (5) mit dem zumindest einen Zufluss (8) des Stromteilers (6) verbunden ist.Valve arrangement (1, 1.1-1.n) according to one of claims 1 to 4,
characterized,
in that the valve device (5) and the flow divider (6) are formed by separate structural units, wherein the at least one outflow (15) of the valve device (5) is connected to the at least one inflow (8) of the flow divider (6).
dadurch gekennzeichnet,
dass die Ventileinrichtung (5) und der Stromteiler (6) räumlich getrennt voneinander angeordnet sind und der zumindest eine Abfluss (15) der Ventileinrichtung (5) mit dem zumindest einen Zufluss (8) des Stromteilers (6) über eine Verbindungsleitung (16) miteinander gekoppelt sind.Valve arrangement (1, 1.1 - 1.n) according to claim 5,
characterized,
in that the valve device (5) and the flow divider (6) are arranged spatially separated from one another and the at least one outflow (15) of the valve device (5) communicates with the at least one inflow (8) of the flow divider (6) via a connecting line (16) are coupled.
dadurch gekennzeichnet,
dass die Ventileinrichtung (5) und der Stromteiler (6) aneinander angeflanscht angeordnet sind.Valve arrangement (1, 1.1 - 1.n) according to claim 6,
characterized,
in that the valve device (5) and the flow divider (6) are arranged flanged to one another.
dadurch gekennzeichnet,
dass die Ventileinrichtung (5) und der Stromteiler (6) als integrale Baueinheit ausgeführt sind.Valve arrangement (1, 1.1-1.n) according to one of claims 1 to 4,
characterized,
in that the valve device (5) and the flow divider (6) are designed as an integral constructional unit.
dadurch gekennzeichnet,
dass der Zulauf (3) der Ventilanordnung (1, 1.1 - 1.n) vom Zufluss der Ventileinrichtung (5), der Zufluss (8) des Stromteilers (6) vom Abfluss (15) der Ventileinrichtung (5) und der Ablauf (4) der Ventilanordnung (1, 1.1 - 1.n) vom ersten Abfluss (9) des Stromteilers (6) gebildet werden.Valve arrangement (1, 1.1 - 1.n) according to claim 8,
characterized,
in that the inflow (3) of the valve arrangement (1, 1.1-1.n) from the inflow of the valve device (5), the inflow (8) of the flow divider (6) from the outlet (15) of the valve device (5) and the outlet (4 ) of the valve arrangement (1, 1.1 - 1.n) from the first outflow (9) of the flow divider (6) are formed.
dadurch gekennzeichnet,
dass diese ein Gehäuse (17) aufweist, umfassend zumindest eine an den Außenumfang (18) mündende Blindbohrung, eine erste vom Außenumfang (18) des Gehäuses (17) in die Blindbohrung mündende und den Zulauf (3) der Ventilanordnung (1, 1.1 - 1.n) bildende Duchgangsöffnung, eine zweite vom Außenumfang (18) des Gehäuses (17) in die Blindbohrung mündende und in Durchflussrichtung der ersten Durchgangsöffnung nachgeordnete und den Ablauf (4) bildende Durchgangsöffnung und einen mit der Durchgangsöffnung einen Ventilsitz (19) bildenden steuerbaren Kolben der Ventileinrichtung (5).Valve arrangement (1, 1.1 - 1.n) according to claim 9,
characterized,
in that it comprises a housing (17) comprising at least one blind bore opening onto the outer circumference (18), a first opening from the outer circumference (18) of the housing (17) into the blind bore and the inlet (3) of the valve arrangement (1, 1.1). 1.n) forming Duchgangsöffnung, a second from the outer periphery (18) of the housing (17) into the blind bore and downstream in the flow direction of the first passage opening and the outlet (4) forming the passage opening and with the passage opening a valve seat (19) forming controllable Piston of the valve device (5).
dadurch gekennzeichnet,
dass der zweite Abfluss (10) des Stromteilers (6) mit einer externen Leitung (7) verbindbar ist.Valve arrangement (1, 1.1 - 1.n) according to one of claims 1 to 10,
characterized,
in that the second outflow (10) of the flow divider (6) can be connected to an external line (7).
dadurch gekennzeichnet,
dass der zweite Abfluss (10) des Stromteilers (6) mit einem Strömungsmedienbereitstellungssystem verbindbar ist.Valve arrangement (1, 1.1 - 1.n) according to claim 11,
characterized,
in that the second outflow (10) of the flow divider (6) can be connected to a flow media supply system.
dadurch gekennzeichnet,
dass der zweite Abfluss (10) über einen Rücklauf (13) mit dem Zulauf (3) der Ventilanordnung (1, 1.1 - 1.n) verbunden ist.Valve arrangement (1, 1.1 - 1.n) according to one of claims 1 to 11,
characterized,
that the second drain (10) via a return (13) with the inlet (3) of the valve assembly (1, 1.1 - 1.n) is connected.
dadurch gekennzeichnet,
dass der Rücklauf (13) im Gehäuse (17) des Stromteilers (6) und gegebenenfalls dem Gehäuse (17) der Ventileinrichtung (5) integriert ist.Valve arrangement (1, 1.1 - 1.n) according to claim 13,
characterized,
that the return (13) in the housing (17) of the flow divider (6) and optionally the housing (17) of the valve device (5) is integrated.
dadurch gekennzeichnet,
dass die einzelnen Strömungswege (11, 12) zwischen Zufluss (8) und den Abflüssen (9, 10) des Stromteilers (6) gleich oder unterschiedlich dimensioniert sind.Valve arrangement (1, 1.1 - 1.n) according to one of claims 1 to 14,
characterized,
that the individual flow paths are dimensioned the same or different (11, 12) between inlet (8) and the outlets (9, 10) of the current divider (6).
dadurch gekennzeichnet,
dass das Durchmesserverhältnis zwischen den einzelnen Abflüssen (9, 10) und dem Zufluss (8) des Stromteilers (6) jeweils im Bereich zwischen 1:2 und 1:10, besonders bevorzugt 1:4 beträgt.Valve arrangement (1, 1.1 - 1.n) according to claim 15,
characterized,
that the diameter ratio between the individual outlets (9, 10) and the inflow (8) of the current divider (6) respectively in the range between 1: 4: 2 and 1:10, more preferably. 1
dadurch gekennzeichnet,
dass der erste Abfluss (9) kleiner als der zweite Abfluss (10) dimensioniert ist.Valve arrangement (1, 1.1 - 1.n) according to claim 15 or 16,
characterized,
that the first outflow (9) is dimensioned smaller than the second outflow (10).
dadurch gekennzeichnet,
dass die Ventileinrichtung (5) als eine der nachfolgenden Einrichtungen ausgeführt ist:
characterized,
in that the valve device (5) is designed as one of the following devices:
dadurch gekennzeichnet,
dass diese einen Pulsationsdämpfer umfasst.Valve arrangement (1, 1.1 - 1.n) according to one of claims 1 to 18,
characterized,
that this includes a pulsation damper.
dadurch gekennzeichnet,
dass der Stromteiler (6) mit einer, mit dem ersten Abfluss (9) gekoppelten Düse (2) eine bauliche Einheit bildet.Valve arrangement (1, 1.1 - 1.n) according to one of claims 1 to 19,
characterized,
that the flow divider (6) having a, with the first outflow (9) coupled to the nozzle (2) forms a structural unit.
dadurch gekennzeichnet,
dass zumindest einem Einlass (20.1, 20.2) der Düse (2) eine Ventilanordnung (1, 1.1 - 1.n) gemäß einem der Ansprüche 1 bis 20 vorgeordnet ist.Applicator for applying liquid or pasty application medium on a movable material web, in particular fibrous web, comprising at least one nozzle (2) with at least one inlet (20.1, 20.2) for the application medium and one of the nozzle (2) upstream valve means (5) for controlling the Volume flow (V) to application medium,
characterized,
in that at least one inlet (20.1, 20.2) of the nozzle (2) is preceded by a valve arrangement (1, 1.1-1.n) according to one of claims 1 to 20.
dadurch gekennzeichnet,
dass die Düse (2) als Mehrstoff-Düse ausgeführt ist, umfassend zumindest einen ersten Einlass (20.1) zur Koppelung mit einer Bereitstellungseinheit für ein erstes Medium und einem zweiten Einlass (20.2) zur Koppelung mit einer Bereitstellungseinheit für zumindest ein weiteres Medium.Applicator according to claim 21,
characterized,
in that the nozzle (2) is designed as a multi-substance nozzle, comprising at least one first inlet (20.1) for coupling to a first medium supply unit and a second inlet (20.2) for coupling to a supply unit for at least one further medium.
dadurch gekennzeichnet,
dass als die einzelnen der Düse (2) zuführbaren Medien zumindest eines der nachfolgenden Medien fungiert:
characterized,
in that the individual media which can be supplied to the nozzle (2) are at least one of the following media:
dadurch gekennzeichnet,
dass über die Breite der bewegbaren Materialbahn eine Mehrzahl von Düsen (2) angeordnet ist, denen jeweils zumindest eine Ventilanordnung (1, 1.1 - 1.n) zugeordnet ist, wobei die einzelnen Ventilanordnungen (1, 1.1 - 1.n) einzeln oder in Gruppen ansteuerbar sind.Applicator according to one of claims 21 to 23,
characterized,
in that a plurality of nozzles (2) is arranged across the width of the movable material web, to each of which at least one valve arrangement (1, 1.1 - 1.n) is assigned, wherein the individual valve arrangements (1, 1.1 - 1.n) are arranged individually or in Groups are controlled.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810043659 DE102008043659A1 (en) | 2008-11-12 | 2008-11-12 | Valve arrangement for the metering of very small amounts of media, in particular Kleengmengendosiereinrichtung and application device for the application of application medium on a movable material web |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2186937A1 true EP2186937A1 (en) | 2010-05-19 |
Family
ID=41820639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09174327A Withdrawn EP2186937A1 (en) | 2008-11-12 | 2009-10-28 | Valve assembly for metering small quantities of media, in particular small quantity metering device and application device for applying application medium to a mobile sheet of material |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2186937A1 (en) |
DE (1) | DE102008043659A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3595482A (en) * | 1968-02-19 | 1971-07-27 | English Electric Co Ltd | Spray devices |
WO2003035271A1 (en) * | 2001-10-22 | 2003-05-01 | Abb Ltd. | Spraying nozzle for rewet showers |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10160725A1 (en) | 2001-12-11 | 2003-06-12 | Voith Paper Patent Gmbh | Method and device for spraying a moving fibrous web |
DE102006018760A1 (en) | 2006-04-22 | 2007-10-25 | Voith Patent Gmbh | Method for the production of atomized spray from an application medium for application on a moving paper, cardboard or other fiber web, comprises atomization with an atomizing medium in a pneumatic atomizing nozzle |
-
2008
- 2008-11-12 DE DE200810043659 patent/DE102008043659A1/en not_active Withdrawn
-
2009
- 2009-10-28 EP EP09174327A patent/EP2186937A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3595482A (en) * | 1968-02-19 | 1971-07-27 | English Electric Co Ltd | Spray devices |
WO2003035271A1 (en) * | 2001-10-22 | 2003-05-01 | Abb Ltd. | Spraying nozzle for rewet showers |
Also Published As
Publication number | Publication date |
---|---|
DE102008043659A1 (en) | 2010-05-20 |
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