EP3839137A1 - Rouleau d'aspiration - Google Patents

Rouleau d'aspiration Download PDF

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Publication number
EP3839137A1
EP3839137A1 EP20214944.9A EP20214944A EP3839137A1 EP 3839137 A1 EP3839137 A1 EP 3839137A1 EP 20214944 A EP20214944 A EP 20214944A EP 3839137 A1 EP3839137 A1 EP 3839137A1
Authority
EP
European Patent Office
Prior art keywords
suction roll
sealing strip
suction
receiver
sensor
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.)
Pending
Application number
EP20214944.9A
Other languages
German (de)
English (en)
Inventor
Peter Eckerstorfer
Anton Luger
Markus Ecker
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.)
Roechling Industrial Oepping & Co Kg GmbH
Original Assignee
Roechling Industrial Oepping & Co Kg GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roechling Industrial Oepping & Co Kg GmbH filed Critical Roechling Industrial Oepping & Co Kg GmbH
Publication of EP3839137A1 publication Critical patent/EP3839137A1/fr
Pending legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0036—Paper-making control systems controlling the press or drying section
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/10—Suction rolls, e.g. couch rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/06—Means for regulating the pressure
    • 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
    • D21F1/48—Suction apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement

Definitions

  • the invention relates to a suction roll.
  • a suction roll which is used for dewatering web material, for example in paper machines, has a metallic roll shell provided with openings and at least one suction box inside.
  • the suction box is fixedly mounted inside the suction roll, with the roll shell provided with holes rotating around the suction box.
  • it has sealing strips on the side, which seal the interior of the suction box against the remaining volume of the suction roll, specifically in the longitudinal direction of the suction roll.
  • the suction box In the circumferential direction of the suction roll, the suction box is delimited at both ends by size limiters and sealed off from the roll shell.
  • the DE102004059028A1 discloses a sealing strip system with wear indicator.
  • the EP0990865A2 relates to a measuring system for determining the moisture content of a fibrous web, a transmitter and receiver jointly forming a sensor, the receiver receiving light or radiation from the transmitter.
  • the transmitter does not transmit any data to the receiver, but rather an auxiliary energy which is applied as a measurement signal at the input of the receiver after passing the material web (or after being reflected on the material web).
  • the auxiliary power of the transmitter itself does not contain any data. A measured value is only available at the output of the receiver.
  • the object of the present invention is to improve the data exchange between sensors and / or actuators and a device, in particular a control unit, attached outside the suction roll.
  • a suction roll which has at least one transmitter in the space within its roll shell, from which transmitter data is wirelessly sent to a receiver, which is also present in the space within the roll shell and the suction roll has additional means (in the form of one or more additional components) in order to transfer data out of the suction roll and / or into the suction roll.
  • the space within the roll jacket is to be understood as that space which is enclosed by the inner jacket surface of the roll jacket.
  • the roll shell itself and, in particular, sensors and / or transmitters and / or receivers in the roll shell are not present in said space and are therefore not covered by the present invention or delimited by this definition.
  • Said means or components can be lines, for example electrical or optical, for wire-bound or line-bound data transmission, or means or components for wireless data transmission.
  • Transmitters, receivers, transceivers, electrical conductors, cables, light guides, sockets, plugs, routers, multiplexers, demultiplexers and other components and devices commonly used in data transmission can be used as means or components.
  • a data connection between the electronic components inside the suction roll and a device arranged outside the suction roll, in particular a data processing system, a server, a user terminal or a control unit for the suction roll, can be established via the means or the component.
  • the suction roll preferably comprises at least one sensor, data from the sensor being sent from the transmitter to the receiver and said additional means or the additional component transmitting data from the receiver out of the suction roll.
  • the data can come directly from the recipient or be processed or prepared in the suction roller.
  • the suction roller preferably comprises at least one actuator, said additional means or the additional component transmitting data into the suction roller and these data being sent from the transmitter to the receiver, which is in data connection with the actuator.
  • the data can reach the transmitter directly from the additional means or the additional component, or be processed or prepared beforehand in the suction roll.
  • the suction roll preferably has at least two wirelessly communicating transceivers in the space inside the roll shell, one of which is in data connection with a device outside the suction roll via said additional means or said additional component and the other with at least one sensor and / or actuator.
  • a suction roll which has at least one transmitter in the space inside its roll shell, from which transmitter data is wirelessly sent to a receiver, which is also present in the space inside the roll shell and wherein the receiver or the transmitter has a control unit arranged outside the suction roll is in data connection.
  • the suction roller preferably comprises at least one sensor, data from the sensor being sent from the transmitter to the receiver and the receiver being in data connection with the control unit.
  • the suction roller preferably comprises at least one actuator, data from the control unit being sent from the transmitter to the receiver and the transmitter being in data connection with the control unit.
  • At least one sensor is preferably selected from the group of sensors comprising: temperature sensor, wear sensor, distance sensor, flow sensor, vibration sensor, sound sensor, deformation sensor, position sensor.
  • the sensor can also be an optical sensor, for example in the form of a camera.
  • the suction roll preferably has at least two wirelessly communicating transceivers in the space inside the roll shell, one of which is in data connection with the control unit and the other with at least one sensor and / or actuator.
  • At least one transmitter and / or receiver which is in data connection with the control unit, a contactless electrical energy transmission to a transmitter and / or receiver which is in data connection with at least one sensor or actuator.
  • the electrical energy supply to at least one sensor, actuator or an energy store assigned to them is preferably carried out by means of contactlessly transmitted energy.
  • An element which transmits electrical energy in a contactless manner is preferably arranged on or in the sealing strip holder of the suction roll.
  • Another element is preferably selected from: an element of the lubricating water system; an element of the adjustment system; or an element which receives this electrical energy in a contactless manner and which supplies a sensor or actuator or an energy store with electrical energy is arranged on the sealing strip.
  • a receiver is preferably arranged on or in the sealing strip holder of the suction roll.
  • Another element is preferably selected from: an element of the lubricating water system; an element of the adjustment system; the sealing strip holder itself or the sealing strip, a transmitter is arranged which transmits sensor data to the receiver.
  • a device in which the transmission system according to the invention can be used consists of a suction roller, inside of which a suction box is attached, which is laterally bounded by sealing strips.
  • Each sealing strip is preferably assigned a lubricating water supply which, viewed in the running direction, introduces lubricating liquid in front of the sealing strip in the direction of the inside of the perforated casing of the suction roll.
  • Each sealing strip preferably has at least one actuator, by means of which the contact pressure of the sealing strip on the inner lateral surface of the suction roll can be changed.
  • the second, rear sealing strip viewed in the running direction preferably additionally has a second actuator by means of which the opening angle of the gap between the sealing strip and the suction roll shell can be changed.
  • the second, rear sealing strip viewed in the running direction preferably has an electroacoustic transducer, which is preferably integrated into the holder of the sealing strip and is thus protected from moisture.
  • a miniserver is a miniaturized data processing system with input and output modules and options for digital Communication, in particular for wireless communication with input and output devices and other data processing systems in a network.
  • a PLC can also serve as a control unit.
  • the temperature of the sealing strip is preferably measured.
  • the use of lubricating water or the amount of lubricating water is preferably controlled or regulated as a function of the measured temperature.
  • the temperature can be measured at one or more points on the sealing strip.
  • Each sealing strip can be assigned a spray tube which can be integrated into the sealing strip holder.
  • a flow sensor can be present in the spray pipe or in the line leading to the spray pipe, which can be in data connection with the miniserver in order to monitor the amount of spray water used in real time.
  • the flow rate is regulated or controlled by the miniserver, for example by adjusting a valve.
  • a combined control method for all sub-areas can include: measuring the temperature in the sealing strips, measuring the vacuum in the suction box, measuring the sound level after the second sealing strip, regulating the contact pressure of the sealing strips, regulating the amount of lubricating water and regulating the opening angle of the second sealing strip.
  • At least one camera is provided in the space inside the roll jacket of the suction roll.
  • One or more cameras can be installed in front of, behind or in the suction box.
  • the cameras are preferably each aligned with the roll shell, in particular with the roll shell and a sealing strip. With the cameras, for example, the drainage distribution, currents, fault conditions and / or blockages of the perforations of the roll shell can be detected.
  • Data, in particular image recordings, of at least one camera within the suction roller are preferably transmitted wirelessly, in particular by radio, from a transmitter to a receiver. At least one camera preferably has a wireless, in particular radio, transmitter.
  • the suction roll preferably has controlled or regulated format limiters. At least one format limiter of the suction roll preferably comprises a sensor or measuring arrangement for distance and / or position measurement.
  • the distance between the format limiter and the roll shell is measured.
  • the position of the format limiter is determined in the longitudinal direction of the suction roll.
  • the data of the distance and / or position measurement are preferably transmitted wirelessly within the suction roll from a transmitter to a receiver.
  • At least one format limiter preferably has at least one actuator for position adjustment.
  • the distance between the format limiter and the roll shell is adjusted.
  • the position of the format limiter is adjusted in the longitudinal direction of the suction roll.
  • control and / or regulation commands to the actuator for distance and / or position adjustment or regulation are preferably transmitted wirelessly within the suction roll from a transmitter to a receiver.
  • Communication preferably takes place digitally.
  • the suction roll preferably has adjustable format limiters.
  • Format limiters are sealing elements, which have an arcuate course of their sealing surface and with this lie in the circumferential direction on the inner surface of the roll shell. The format limiters thus seal the area between two sealing strips in the circumferential direction of the roll shell.
  • At least one format limiter is preferably present between the sealing strips and has a lubricant system which introduces lubricant onto or in the area where the format limiter rests on the roll shell.
  • the lubricant supply preferably comprises at least one sensor (for example pressure sensor, flow sensor or temperature sensor).
  • the data of at least one sensor are preferably transmitted wirelessly within the suction roll from a transmitter to a receiver.
  • the lubricant supply preferably comprises at least one actuator.
  • the control and / or regulation commands are preferably transmitted wirelessly to at least one actuator within the suction roll from a transmitter to a receiver.
  • the invention comprises elements of a suction roll selected from the group of elements comprising: sealing strip; Sealing strip holder; Format delimiter; Suction box; Adjusting device; or lubricant system, wherein the element comprises at least one sensor and / or actuator which is in data connection with a receiver and / or transmitter which is present within the space enclosed by the inner jacket surface of the roll jacket.
  • the invention comprises elements of a suction roll selected from the group of elements comprising: sealing strip; Sealing strip holder; Format delimiter; Suction box; Adjusting device; or lubricant system, wherein the element comprises at least one sensor and / or actuator and also has a receiver and / or transmitter, the receiver being designed to receive data from a transmitter arranged inside the suction roller and the transmitter being designed to send data to an inside to send the suction roller arranged receiver.
  • the transmitter of the element is preferably dimensioned or its transmission power selected so that its signal does not reach the outside of the suction roller or cannot be reliably received on the outside. This is the case, for example, when the type of signal is not suitable to penetrate the roll shell and / or the cover, such as, for example, optical wireless signals. For example, this is also the case when the transmission power is too low, for example with RFID transmitters.
  • the signals from the transmitters arranged within the suction roll are preferably shielded from the environment by the roll shell and the roll cover. Of course, this only applies to those transmitters which are intended for wireless communication with a receiver arranged inside the suction roller.
  • Fig. 1 the sealing strip 1 with integrated temperature sensors 2 is shown.
  • a plurality of sensor units 3 can be integrated in the sealing strip 1, each sensor unit 3 having a plurality of temperature sensors 2.
  • the temperature sensors 2 With regard to the upper surface, that is to say the friction or friction surface of the sealing strip 1, the temperature sensors 2 have different distances.
  • the sensor units 3 each include a circuit board 4, temperature sensors 2 and a microchip 5 with an integrated radio module.
  • the sensor unit As an improvement according to the invention, it is proposed to provide the sensor unit with a receiver for wireless energy transmission and to provide a transmitter for wireless energy transmission in its vicinity.
  • the sensor unit can preferably have an accumulator in order to ensure the energy supply of the sensor unit 3 in the event of interruptions in the energy transmission.
  • the sealing strip 1 comprises at least one sensor unit 3; the sealing strip 1 preferably has multiple sensor units 3 in order to be able to measure the temperature at multiple points on the sealing strip 1.
  • Fig. 2 an exemplary sealing strip system is illustrated, which is preferably used as the first sealing strip system of a suction box 7, viewed in the direction of movement of the roller jacket 6.
  • the sealing strip system consists of a sealing strip 1 which is movably received in the groove of a sealing strip holder 8.
  • an adjusting element 9 for example designed as a pressure hose.
  • the sealing strip holder 8 is provided with a lubricant system which has spray nozzles 10 through which the lubricant, in particular lubricating water, through a spray pipe integrated into the sealing strip holder 8, for example 11 is introduced.
  • a lubricant sensor 12 is preferably attached to, on or in the lubricant system, the measured value of which provides information about at least one parameter of the lubricant system, for example the flow rate or the pressure of the lubricant.
  • the lubricant sensor 12 preferably has a radio module.
  • At least one sensor unit 3 is preferably integrated or inserted into the sealing strip 1.
  • the contact pressure with which the sealing strip 1 is pressed against the inside of the roller shell 6 can be changed via the pressure in the pressure hose.
  • a contact sensor 13 is preferably attached to, on or in the contact element 9, the measured value of which provides information about the contact pressure or the contact force.
  • the adjustment sensor 13 preferably has a radio module.
  • At least one temperature sensor, which can be used to monitor the operating state, is preferably arranged on or in the pressure hose.
  • FIG. 3 the structure of a suction box 7 with two exemplary sealing strip systems is shown schematically.
  • the direction of movement of the roll shell 6 is indicated by an arrow.
  • the front first sealing strip system as seen in the direction of movement is according to FIG Fig. 2 executed.
  • a second exemplary sealing strip system is also shown, which is preferably used as a second sealing strip system of a suction box 7, viewed in the direction of movement of the suction roller.
  • the sealing strip system consists of a sealing strip 1, which has a web along the lower front edge which is movably received in the groove of a sealing strip holder 8.
  • a positioning element 9 is located in the groove below the web of the sealing strip 1.
  • the sealing strip holder 8 is provided with a lubricating water system which has spray nozzles 10 through which the lubricating water is introduced through a spray pipe 11.
  • At least one sensor unit 3 is preferably integrated or inserted into the sealing strip 1.
  • the contact pressure with which the sealing strip 1 is pressed in the front area against the inside of the roll shell 6 can be changed via the pressure in the contact element 9.
  • the sealing strip 1 has, for example has a curved upper surface, so that the upper surface rests against the roll shell 6 in its front region and forms a gradually increasing gap with the roll shell 6 in the rear region.
  • the width of this gap can be adjusted by a height-adjustable strip which can move the rear end of the sealing strip 1 closer to the roll shell 6 or away from it.
  • a symbolically represented sound sensor 14 or a pickup can be attached, which is used to measure the noise level on or after the sealing strip 1.
  • the sound sensor 14 preferably has a radio module.
  • the two sealing strip systems form the lateral delimitation of the suction box 7.
  • the suction box 7 In the interior of the suction box 7, there is an area 15 that is sealed off from the rest of the interior of the suction roll.
  • a pressure sensor 16 for measuring the negative pressure or vacuum in the sealed area 15 can be located inside the suction box 7.
  • the pressure sensor 16 preferably has a radio module.
  • the suction roll In order to be able to monitor and / or control the suction roll, in particular a plurality of suction rolls, it is necessary to transmit the required data, for example the measured values from sensors, from the suction roll to a control unit 17 outside the suction roll Fig. 4 is illustrated.
  • the control unit 17 uses the measured values to determine the required manipulated variables for controlling the actuators of the suction roll. In this case, data transmission from the control unit 17 into the suction roll may also be necessary.
  • the control unit 17 is preferably in data connection with a display and input device, in particular wirelessly, in order to display the operating parameters or to allow manual changes, for example a screen, a tablet or a smartphone.
  • the control unit 17 is preferably in data connection with several suction rollers.
  • the control unit 17 can be in data connection with further system components of a paper machine, the paper machine comprising at least one suction roll according to the invention.
  • the suction roll has a receiver 20 inside.
  • the receiver 20 can be present at or on a cover 23 of the suction roll which closes one end of the roll shell 6.
  • the receiver 20 can be attached to the end of a sealing strip holder 8.
  • the receiver 20 is preferably attached to the inside of the cover 23.
  • the receiver 20 can also have a transmitter, that is to say it can be present as a transceiver.
  • the receiver 20 is in wireless data connection with a transmitter 19, which is also attached in the interior of the suction roll at a distance from the receiver 20.
  • the transmitter 19 can have a receiver, that is to say it can be designed as a transceiver.
  • the transmitter 19 is in data connection with at least one sensor or actuator, this preferably taking place via cables or conductor tracks.
  • the receiver 20 is in data connection with a control unit 17. This can be done in that the receiver 20 is wired to the data processing system. In this case it is preferred it is provided that the receiver is connected to a socket on the outside of the cover, so that a cable 24 coming from the control unit 17 can be plugged into the cover 23.
  • an external transmitter 21 is attached to the outside of the cover 23, which transmitter can communicate wirelessly with the control unit 17 in that the control unit 17 is in data connection with an external receiver 22 or has one.
  • the external transmitter 21 can preferably have a receiver, that is to say it can be designed as a transceiver.
  • the external receiver 22 can preferably have a transmitter, that is to say it can be designed as a transceiver.
  • the external transmitter 21 is in data connection with the receiver 20, which is arranged inside the suction roll. Between the receiver 20 and the outer transmitter 21 there is preferably a data connection through the cover 23, for example through cables or conductor tracks.
  • wireless transmission can also take place through an opening, in particular a bore, in the cover, for example data can be transmitted optically or by radio through the opening.
  • a wireless signal transmission in particular for optical signals or radio signals, a permeable insert in the cover.
  • the cover itself is preferably made of metal, in particular steel.
  • there is at least one transmitter and / or receiver which is arranged in or on the cover and which carries out the task of transmitting signals through the cover.
  • control unit 17 has a data connection to several suction rolls.
  • a central control unit 17 is preferably used to monitor and / or control a plurality of suction rolls.
  • One embodiment variant consists in the control of several suction rolls by a common control unit 17, the control unit 17 being in data connection with the receivers 20 of at least two suction rolls, which receivers are each arranged on the cover 23 of the suction roll or in the interior of the respective suction roll Receiver is in wireless, contactless data connection with at least one transmitter, which transmitter is arranged within the respective suction roll.
  • Transmitter 19 and receiver 20 communicate with one another by near-field communication.
  • Transmitter 19 and receiver 20 can be designed as transceivers.
  • the energy supply of the transmitter 19 takes place contactlessly by the receiver 20.
  • Sensors or actuators connected to the transmitter 19 are preferably also supplied with energy in this way.
  • the receiver 20 is in data connection with the control unit 17.
  • the receiver 20 can have cabling 18 to the cover, or can have a contactless data connection with a further receiver / transceiver on the cover via a further transmitter.
  • a read head for reading out a passive RFID tag is placed in the sealing strip holder 8 and a passive RFID tag, which is supplied with energy by the reading head through inductive charging and via which data is read out by the reading head, is placed in the sealing strip 1.
  • a temperature sensor can be attached to the RFID tag.
  • a sensor for sound or vibration measurement, a pressure sensor, force measuring sensor and / or a humidity sensor can be attached to the RFID tag in various embodiments.
  • a sensor for measuring the deformation of the sealing strip holder 8, the sealing strip 1 or the suction box 7 can also be attached to the RFID tag.
  • Suitable sensors for deformation measurement are, for example, strain gauges, distance sensors, position sensors, laser position measurement, laser transit time measurement, or light barriers.
  • a cable preferably runs from the reading head in the sealing strip holder 8 to the front or to one of the covers 23 of the suction roller.
  • the data can be forwarded wirelessly from the front or one of the covers 23 of the suction roll, for example by means of GSM cellular radio, WLAN, radio to at least one data processing system or a cloud, this and the following applying to all design variants.
  • a data processing system in particular a control unit 17, for example a PLC, a computer or a microcontroller, can receive data directly by remote transmission or from the cloud, or can be connected by cable to the front or a cover of the suction roll.
  • a control unit 17 for example a PLC, a computer or a microcontroller
  • any device that is suitable for processing, displaying or storing sensor data can be used as a data processing system.
  • the sensor data originating from the suction roll can be transmitted to a memory outside the suction roll.
  • the sensor data coming from the suction roller can be processed with a digital subsystem such as an app or a website, or displayed with these.
  • a control unit for the suction roll can also be present within the suction roll, which control unit automatically determines or calculates instructions to the actuators within the suction roll on the basis of sensor data.
  • the control unit can also represent a means or a component or a part of the means or components in order to transmit data from the suction roll (sensor data) and / or into the suction roll (instructions to the actuators).
  • the data coming from outside the suction roll can then be converted into instructions to the actuators by the control unit.
  • the data coming from sensors inside the suction roll can then be further processed by the control unit and / or transmitted to the outside.
  • the wireless transmission between the transmitter and receiver within the suction roll takes place in this case on the transmission path between the control unit and the sensors and / or actuators.
  • the control unit is in data connection with a data processing system outside the suction roll, a server, a user terminal or a higher-level control unit 17 for several suction rolls or can establish such a data connection via wireless or wired or wire-based transmission means.

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  • Paper (AREA)
EP20214944.9A 2019-12-19 2020-12-17 Rouleau d'aspiration Pending EP3839137A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA51135/2019A AT522782B1 (de) 2019-12-19 2019-12-19 Saugwalze

Publications (1)

Publication Number Publication Date
EP3839137A1 true EP3839137A1 (fr) 2021-06-23

Family

ID=73855294

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Application Number Title Priority Date Filing Date
EP20214944.9A Pending EP3839137A1 (fr) 2019-12-19 2020-12-17 Rouleau d'aspiration

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US (1) US11441270B2 (fr)
EP (1) EP3839137A1 (fr)
AT (1) AT522782B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021104870A1 (de) * 2021-03-01 2022-09-01 Voith Patent Gmbh Einstellung von Walzen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0990865A2 (fr) 1998-09-30 2000-04-05 Voith Sulzer Papiertechnik Patent GmbH Système de mesure pour déterminer le taux d'humidité d'une feuille fibreuse
WO2003056215A1 (fr) * 2001-12-13 2003-07-10 Metso Paper, Inc. Indicateur d'usure du joint du rouleau aspirant d'une machine a papier ou a carton
DE102004059028A1 (de) 2004-12-08 2006-06-14 Voith Paper Patent Gmbh Dichtleiste
WO2016040975A1 (fr) * 2014-09-15 2016-03-24 Röchling Leripa Papertech GmbH & Co. KG Support de baguette d'étanchéité

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011075806A1 (de) * 2011-05-13 2012-11-15 Voith Patent Gmbh Dichtungsanordnung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0990865A2 (fr) 1998-09-30 2000-04-05 Voith Sulzer Papiertechnik Patent GmbH Système de mesure pour déterminer le taux d'humidité d'une feuille fibreuse
WO2003056215A1 (fr) * 2001-12-13 2003-07-10 Metso Paper, Inc. Indicateur d'usure du joint du rouleau aspirant d'une machine a papier ou a carton
DE102004059028A1 (de) 2004-12-08 2006-06-14 Voith Paper Patent Gmbh Dichtleiste
WO2016040975A1 (fr) * 2014-09-15 2016-03-24 Röchling Leripa Papertech GmbH & Co. KG Support de baguette d'étanchéité
US20170254019A1 (en) 2014-09-15 2017-09-07 Rochling Leripa Papertech Gmbh & Co. Kg Sealing strip systems for suction rolls
US20170254020A1 (en) 2014-09-15 2017-09-07 Röchling Leripa Papertech GmbH & Co. KG Sealing-strip holder

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Publication number Publication date
US20210189653A1 (en) 2021-06-24
AT522782B1 (de) 2021-02-15
AT522782A4 (de) 2021-02-15
US11441270B2 (en) 2022-09-13

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