EP2573264B1 - Dispositif de racleur et agencement de racleurs destinés au fonctionnement avec un tel dispositif - Google Patents

Dispositif de racleur et agencement de racleurs destinés au fonctionnement avec un tel dispositif Download PDF

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Publication number
EP2573264B1
EP2573264B1 EP20120176711 EP12176711A EP2573264B1 EP 2573264 B1 EP2573264 B1 EP 2573264B1 EP 20120176711 EP20120176711 EP 20120176711 EP 12176711 A EP12176711 A EP 12176711A EP 2573264 B1 EP2573264 B1 EP 2573264B1
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EP
European Patent Office
Prior art keywords
sensor
holding element
scraper
holding
accommodation chamber
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
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EP20120176711
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German (de)
English (en)
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EP2573264A1 (fr
Inventor
Gerhard Hertel
Martin Kamitz
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Individual
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Individual
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Publication of EP2573264A1 publication Critical patent/EP2573264A1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/12—Crêping
    • B31F1/14—Crêping by doctor blades arranged crosswise to the web
    • B31F1/145—Blade constructions
    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/10—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with blades

Definitions

  • the invention relates to a device for a scraper for moving surfaces, in particular surfaces of a paper, cardboard or other fibrous web manufacturing machines.
  • Scraper devices of the type mentioned serve for scraping or stripping of deposits or impurities, such as fiber residues from a fibrous web, ah running surfaces. Such moving surfaces are found, for example, on rotating rollers for guiding, pressing and / or drying of paper, board or other fibrous webs passing through the machine. By means of such scraper devices, in particular excess application medium is scraped off the moving surface and / or the web is lifted off the moving surface.
  • a scraper device for moving surfaces with a doctor blade known.
  • the doctor blade is inserted in a blade holder, which is held by a support body.
  • the scraper device has a plurality of sensors for detecting the force acting on the doctor blade pressing force.
  • the sensors are arranged on the surface of a measuring device, which as is formed separate component. The scraper blade and the measuring device are placed together in the blade holder.
  • a scraper device with a scraper blade for cooperation with a moving surface, a holder for the doctor blade and a device for detecting the contact pressure or the contact pressure known.
  • the device has a plurality of piezoelectric sensors which are arranged on the top or bottom of the doctor blade.
  • a method for identifying surface damage of a stone roller in the press section of a paper machine is known.
  • a scraper is provided with a holder and a scraper part attached thereto.
  • the holder is mounted on the frame of the press section so that it can rotate about its length axis.
  • On the holder acceleration sensor are arranged to register the surface damage caused by the stone roller blows on the doctor blade.
  • From the DE 10 2004 018 421 B3 is a calibration device for the contact pressure of a voltage applied to the circumference of a roll doctor blade of a doctor blade.
  • a sensor holder and a pressure sensor is attached on the scraper blade.
  • the holding blade, the sensor holder and the pressure sensor are positioned so that the position of the pressure sensor on the circumference of the roller corresponds to the location of the blade.
  • the present invention has for its object to provide a device for a scraper on moving surfaces, such as roll surfaces, in particular surfaces of a paper, cardboard or other fibrous web-making machines, which allows a detection of vibrations, simple design and inexpensive to produce, and in existing scraper arrangements easy to integrate.
  • the object is also to propose a scraper arrangement with such a device for detecting vibrations.
  • the solution consists in a device for a scraper blade for moving surfaces, comprising a holding element which is releasably connectable to a support member for fixing the scraper blade to the support member; and at least one first sensor for detecting vibrations; wherein the at least one first sensor is arranged in the interior of the holding element and fixedly connected to the holding element.
  • the device performs two functions as an integral component, namely on the one hand, the fixation of the doctor blade to a support member, and on the other hand, the detection of vibrations, which in turn allows conclusions about the wear of the moving surface.
  • the moving surface may be, but is not limited to, a roll or cylinder of a paper, board, or other fibrous web making machine.
  • Use examples for the device are the use for scrapers on Yankee cylinders, dry cylinders and / or crepe cylinders. It is also conceivable that the moving surface is a band surface, for example a rotating steel band. The scraper usually slides on a lubricating film on the moving surface.
  • the scraper can strike through the lubricating film on the extremely sensitive, smooth surface of the roller or the band, which can lead to scoring here.
  • vibrations on the doctor blade can be detected in good time, so that a technically complex, time-consuming and therefore expensive revision of the moving surface can be prevented.
  • the at least one sensor is used to detect vibrations, which is why it can also be referred to as a vibration sensor.
  • the sensor is designed so that it can detect at least one measurement variable representing vibrations, for example an acceleration.
  • the holding element can have one or more such sensors, which can sense, for example, vibrations in different directions, for example tangentially and / or normal to the moving surface.
  • Vibrations of the scraper or of the moving surface can be determined particularly accurately with the device according to the invention, since the sensor is arranged in the interior of the holding element, and oscillation pulses introduced on the holding element are thus registered directly and as unadulterated as possible.
  • interior of the holding element it is meant that the sensor is arranged within an enveloping surface of the holding element.
  • the detected vibrations allow conclusions as to whether the scraper undesirably comes into contact with the moving surface.
  • vibrations can be recorded, which are generated at an already made ripple education on the cylinder surface.
  • the device can replace an otherwise found at this point terminal and thus extends the holding or clamping function to the sensor function.
  • the at least one first sensor is inserted in a first receiving space of the holding element, which is preferably designed in the form of a bore. It is particularly advantageous if the sensor in the first bore with a curable medium, in particular with a resin or an adhesive, is shed. In this way, a secure connection of the at least one sensor to the holding element is ensured, so that vibrations introduced into the holding element are transmitted directly to the sensor. For a reliable functioning of the sensor (s), it is provided according to a favorable configuration that the receiving space, after insertion and, if appropriate, potting of the vibration sensor, be sealed by means of a lid.
  • the at least one sensor Due to the sealing connection between the lid and the holding element, the at least one sensor remains unscathed by external environmental influences, such as spray water or dust. It is particularly favorable when the lid is welded around after insertion of the at least one sensor with the holding element. In this way, the sensor is completely hermetically sealed off to the outside.
  • other types of connection between the lid and the holding element are also conceivable, for example a screw connection, wherein a seal would then preferably be inserted between an outer surface of the lid and an inner surface of the holding element.
  • the at least one sensor is designed to detect high-frequency vibrations. It is particularly advantageous if the vibration sensor can detect vibrations of 10 kHz to 40 kHz. It is particularly preferred if the vibration sensor is designed for detecting vibrations in the ultrasonic range, that is to say vibrations starting at approximately 25 kHz. This refinement allows highly dynamic changes to be registered during the scraping process between scraper and doctor blade and moving surface. It is understood that the vibration sensor can also be designed to measure smaller frequency ranges as needed, for example, frequency ranges from 10 kHz to 1 Hz.
  • the at least one first sensor for detecting vibrations is preferably designed in the form of a piezoelectric sensor, with other sensors for Detecting vibration-representing variables, such as an integrated circuit (IC chip) are conceivable.
  • the holding element has a clamping surface which is in contact with the doctor blade in contact.
  • the vibration sensor is preferably arranged in the covering area with the clamping surface in a plan view of the retaining element. In this way it is ensured that the vibrations of the scraper blade pass directly into the holding element and can be detected here by the at least one vibration sensor.
  • the retaining element preferably has a through-hole through which a screw can be passed for attachment to the carrier element.
  • the through hole has a shoulder against which the screw head or a nut for the screw can be axially supported.
  • the through hole for the screw and the bore for receiving the at least one vibration sensor are parallel to each other or, in other words, the bore for the vibration sensor is perpendicular to the clamping surface of the holding element.
  • the bore for the vibration sensor at an angle to the through hole, in particular this perpendicular crossing runs.
  • a second sensor for detecting temperatures is provided.
  • this sensor can detect at least one quantity representing the temperature.
  • this temperature sensor is also located in the interior of the holding element, so that it is well protected from external influences and can reliably detect the temperature of the holding element.
  • the temperature sensor is arranged in a second receiving space of the holding element, which may be designed in the form of a bore.
  • a curable medium such as a resin or adhesive, shed.
  • the retaining element has a tapered end portion, wherein it is provided that the second receiving space for receiving the temperature sensor at least partially, in particular for the most part, is disposed within this tapered end portion. This ensures that the temperature is as close as possible to the end of the holding element and thus close to the doctor blade, so that a reliable and accurate temperature detection is possible. It is particularly favorable in this context that the closed end of the second receiving space is disposed within a front half, in particular within a front third of the tapered end portion of the holding member.
  • the tapered end portion of the retaining element is preferably wedge-shaped. For a compact construction, it is advantageous if the second receiving space for the temperature sensor opens into the first receiving space for the vibration sensor.
  • the main extension direction of the receiving space for the temperature sensor extends at an angle to the main extension direction of the receiving space for the vibration sensor.
  • an included between the main directions of extension of the receiving spaces angle is preferably between 10 ° and 90 °.
  • the holding element has an interface for connecting a data cable. Via this interface, the quantities detected by the at least one vibration sensor and optionally by the temperature sensor and / or a further sensor are forwarded to an electronic unit for evaluation. It is particularly favorable for reliable transmission of the detected variables if the connection between the sensor (s) and the interface extends within the retaining element.
  • a through hole is provided between the interface for connecting the data cable and the first receiving space for the vibration sensor, through which an electrical line for transmitting the detected by the vibration sensor or the temperature sensor sizes is passed.
  • additional sensors into the retaining element, for example one or more force sensors or strain gage sensors and / or one or more inclination angle sensors.
  • additional sensor By means of this additional sensor, further relevant variables can be detected, which can then be taken into account in the evaluation of the vibration behavior of the moving surface or of the doctor blade.
  • the solution of the above-mentioned object further consists in a scraper arrangement for moving surfaces, in particular a machine for producing fibrous webs, comprising a carrier element; a scraper blade; at least one first device having a holding element for releasably securing the doctor blade to the carrier element and having at least one first sensor for detecting vibrations, wherein the at least one first sensor is arranged inside the holding element and firmly connected thereto; and a plurality of second holding devices for releasably securing the doctor blade to the support member, wherein the second holding devices are designed sensorless.
  • the said first devices can be designed according to one or more of the abovementioned embodiments.
  • the advantage of said scraper arrangement is that it is particularly easy to produce. It is also possible to convert existing scraper arrangements in a simple manner with the devices according to the invention. For this purpose, only some of the previously existing holding devices must be replaced and replaced by first devices with holding element and sensor.
  • the first holding element and sensor devices which may also be referred to as integrated holding element sensor devices, replace the pure functional clamps. An adaptation of the scraper bar construction is therefore not required.
  • a plurality of first devices are provided with holding element and sensor, wherein between two first devices in each case at least one sensorless second holding device is arranged.
  • the number of first devices with sensor is basically arbitrary and depends on the width of the doctor blade or the moving surface.
  • a plurality of holding devices according to the invention are arranged distributed with sensors over the length of the doctor blade. In this way, high-precision vibration detection is possible with optimal technical integration.
  • FIGS. 1 and 2 show a device 2 according to the invention for a moving surface scraper.
  • the scraper which is not shown here, is used for application to the moving surface in order to keep it free from contamination or to separate paper or other fibrous webs from the moving surface.
  • the moving surface may be the surface of a cylinder or roll of a paper, board, or other fibrous web making machine.
  • the device 2 comprises a holding element 3 and a plurality of sensors 4, 5, which are arranged within the holding element 3.
  • the holding element 3 has on its lower side on a clamping surface 6 which is in the assembled state with a doctor blade (not shown here) in contact and clamps it to a mating surface.
  • the holding element 3 has a through hole 7 into which a screw for fastening the holding element 3 can be inserted or screwed with a carrier element, not shown here.
  • the screw head for bracing on a shoulder 8 of the through hole 7 can be supported axially.
  • the holding element 3 further has a receiving space 9, in which the first sensor 4 is received.
  • the receiving space 9, which may also be referred to as a recess, is preferably designed in the form of a blind hole, which extends in particular parallel to the through hole 7.
  • the recess 9 extends as far as possible over the entire height of the holding element 3, so that the lower end of the recess 9 is arranged in a lower third, in particular in a lower quarter with respect to the total height of the retaining element 3.
  • the recess 9 or the sensor 4 arranged therein are arranged in register with the clamping surface 6. In this way, it is ensured that vibrations introduced by the doctor blade into the holding element 3 can be detected accurately and reliably by the sensor 4.
  • the sensor 4 is designed to detect at least one vibration representing size.
  • the sensor is designed for detecting high-frequency oscillations of more than 10 kHz to 40 kHz. In this way, highly dynamic changes during the scraper process between scraper blade and the moving surface can be registered reliably.
  • the sensor 4 is designed in the present case in the form of a piezoelectric sensor which can detect vibration excitations in one or more axes. It is understood that, in principle, a plurality of vibration sensors can be provided in the holding element 3, whereby, depending on the requirements, particularly accurate conclusions can be drawn on the vibration behavior of the device or the interaction between the doctor blade and the moving surface.
  • the variables detected by the vibration sensor 4 are forwarded via cable connections 11 or electrical lines to an interface 15 of the holding element 3. In this case, the cable connections 11 run in the interior of the holding element 3, so that they are well protected from external environmental influences.
  • the holding element 3 has a further recess 10 in the interior. This is preferably designed in the form of a blind hole, which starts from the first recess 9 or opens into it.
  • the second sensor 5 is seated; insofar as the second recess 10 may also be referred to as a second receiving space. It can be seen that the end 12 of the second recess 10, viewed in longitudinal section through the device 2, is arranged between the first recess 9 and a free end 13 of the holding element 3.
  • the end 12 of the second recess 10 in the overlapping area with the clamping surface In relation to the height of the holding element 3, the end 12 of the bore 10 is located in a lower half portion of the holding element 3.
  • the second sensor 5 is designed to detect at least one measured variable representing the temperature, and can therefore also be referred to as a temperature sensor.
  • the variables detected by the temperature sensor are forwarded via cable connections 14 or electrical lines to the interface 15 of the holding element 3.
  • the cable connections 14 for the temperature sensor 5 likewise run in the interior of the retaining element 3.
  • the first sensor 4 and the second sensor 5 are preferably fixed in the respective recesses 9, 10. This can be done, for example, by means of a curable medium, in particular a resin or an adhesive, with which the sensors 4, 5 are cast.
  • the opening 16 of the holding member 3 is hermetically sealed by means of a lid 17.
  • the cover 17 is integrally connected to the holding element 3 by means of a circumferential weld 21. In this way, the sensor element 4, 5 arranged in the holding element 3 is optimally protected against external environmental influences.
  • the lid 17 could also be screwed to the holding element via a corresponding thread be, in which case between the cover 17 and the holding member 16 would preferably provide a seal.
  • a further through hole 19 is also provided. This serves to receive adjusting means, not shown here, with which the holding element 3 can be adjusted relative to the support element.
  • the retaining element 3 is shown as a detail. Here are the holes lying inside 7, 9, 10, 19 and recesses each shown in dashed lines.
  • a passage 20 is further provided, one end of which opens into the recess 9 and the second end opens at the interface 15 of the holding member 3.
  • the interface 15 preferably comprises a mechanical and electrical connection for passing the data to an electronic control unit.
  • FIG. 7 a scraper assembly 22 according to the invention for a moving surface 23 is shown.
  • the moving surface 23 is the surface of a rotating roller or cylinder used for guiding, pressing or drying machine-laid fibrous webs. With the scraper arrangement 22, the moving surface 23 is kept free of contamination or a fiber web can be creped from the surface 23.
  • the scraper assembly 22 comprises a scraper blade 24, a support element 25, which may also be referred to as a scraper bar or scraper holder, and a plurality of first devices 2 and second devices 27 for clamping the scraper blade 24 to the carrier element 25.
  • the first devices 2 are after the FIGS. 1 to 6 designed.
  • screws 26 are in the through holes 7 of Retaining elements 3 inserted and screwed into a corresponding mating thread in the support member 25. It can be seen that a plurality of devices 2 according to the invention are provided over the length of the moving surface 23 or the doctor blade 24. In this way, it is ensured that changes in the vibration behavior between the moving surface 23 and doctor blade 24 can be detected at different points, so that, if necessary, intervention in the production process can take place in good time before greater damage occurs.
  • the second holding devices 27 are provided, which are designed sensorless. In other words, the second holding devices 27 only have a clamping function. It can be seen that the second holding devices 27 likewise have a bore into which corresponding screws can be inserted and screwed to the carrier element 25.
  • the advantage of the devices 2 according to the invention is that they combine two functions in one component, namely, on the one hand, the holding function of the doctor blade 24 on the carrier element 25 and, on the other hand, the sensing of various physical variables, such as vibrations or temperatures.
  • the arranged in the device 2 according to the invention sensors 4, 5 are hermetically protected from external influences, so that they are subject to only a small wear and have a long life.
  • Another particular advantage is that the inventive devices 2 can be easily integrated into existing scraper systems. For this purpose, only some of the formally designed as a pure functional parts holding devices must be exchanged and replaced by the devices 2 according to the invention. An adaptation of the scraper bar construction is therefore not required, so that a particularly good technical integration of the sensor is given.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Claims (15)

  1. Dispositif pour une lame de racloir pour des surfaces en mouvement, comprenant
    un élément de maintien (3) qui peut se relier de manière amovible à un élément porteur (25) pour la fixation de la lame de racloir (24) sur l'élément porteur (25) ; et
    au moins un premier capteur (4) pour détecter des vibrations ;
    l'au moins un premier capteur (4) étant placé à l'intérieur de l'élément de maintien (3) et fixement relié avec l'élément de maintien (3).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    l'au moins un premier capteur (4) est inséré dans un premier espace de logement (9) de l'élément de maintien (3) et scellé dans celui-ci à l'aide d'un milieu durcissable, notamment une résine ou un agent adhésif.
  3. Dispositif selon l'une quelconque des revendications 1 ou 2,
    caractérisé en ce que
    l'au moins un premier capteur (4) est conçu pour détecter des vibrations à haute fréquence, notamment des vibrations comprises entre 10 kHz et 40 kHz.
  4. Dispositif selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce
    qu'après l'insertion de l'au moins un premier capteur (4), on ferme de manière étanche le premier espace de logement (9) pour l'au moins un premier capteur (4) avec un couvercle (17) que notamment l'on soude avec l'élément de maintien (3).
  5. Dispositif selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    l'élément de maintien (3) comporte une surface de serrage (6) qui à l'état monté est en contact avec la lame de racloir (24), en vue en élévation sur l'élément de maintien (3), l'au moins un premier capteur (4) étant placé dans la zone de recouvrement avec la surface de serrage (6).
  6. Dispositif selon la revendication 5,
    caractérisé en ce
    qu'une direction d'extension principale du premier espace de logement (9) s'étend à la perpendiculaire de la surface de serrage (6).
  7. Dispositif selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce
    qu'il est prévu un deuxième capteur (5) pour détecter des températures qui est placé à l'intérieur de l'élément de maintien (3), notamment dans un deuxième espace de logement (10) de l'élément de maintien (3) et qui est fixement relié avec celui-ci.
  8. Dispositif selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que
    l'élément de maintien (3) comporte une partie d'extrémité qui se rétrécit, le deuxième espace de logement (10) pour le deuxième capteur (5) étant placé au moins en partie, notamment en majeure partie à l'intérieur de la partie d'extrémité qui se rétrécit.
  9. Dispositif selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce que
    le deuxième espace de logement (10) pour le deuxième capteur (5) débouche dans le premier espace de logement (9) pour l'au moins un premier capteur (4), une direction d'extension principale du deuxième espace de logement (10), s'étendant notamment de manière angulaire par rapport à une direction d'extension principale du premier espace de logement (9).
  10. Dispositif selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    l'élément de maintien (3) comporte un perçage traversant à travers lequel on peut insérer ou visser une vis pour la fixation de l'élément de maintien (3) avec l'élément porteur (25).
  11. Dispositif selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce que
    l'élément de maintien (3) comporte une interface (15) pour le raccordement d'un câble de données, entre l'interface (15) pour le raccordement d'un câble de données et le premier espace de logement (9) pour l'au moins un premier capteur (4) étant prévu un orifice de passage (20) à travers lequel passe un conduit électrique (11, 14) pour la transmission des grandeurs détectées par l'au moins un capteur (4, 5).
  12. Dispositif selon l'une quelconque des revendications 1 à 11,
    caractérisé en ce
    qu'au moins un capteur supplémentaire est placé dans l'élément de maintien (3), notamment un capteur de force et/ou un capteur d'angle d'inclinaison.
  13. Agencement de racloir (22) pour des surfaces (23) en mouvement, notamment d'une machine pour la production de lés de matière fibreuse, comprenant
    un élément porteur (25),
    une lame de racloir (24)
    au moins un premier dispositif (2) avec un élément de maintien (3) pour la fixation amovible de la lame de racloir (24) sur l'élément porteur (25) et avec au moins un premier capteur (4) pour détecter des vibrations, l'au moins un premier capteur (4) étant placé à l'intérieur de l'élément de maintien (3) et fixement relié avec ce dernier,
    plusieurs deuxièmes dispositifs de maintien (27) pour la fixation amovible de la lame de racloir (24) sur l'élément porteur (25), les deuxièmes dispositifs de maintien (27) étant conçus sans capteur.
  14. Agencement de racloir selon la revendication 13,
    caractérisé en ce
    qu'il est prévu plusieurs premiers dispositifs (2) avec un élément de maintien (3) et un capteur (4, 5), entre deux premiers dispositifs (2) étant placé chaque fois au moins un deuxième dispositif (27) sans capteur.
  15. Agencement de racloir selon la revendication 13 ou la revendication 14,
    caractérisé en ce que
    l'au moins un premier dispositif (2) est conçu selon l'une quelconque des revendications 1 à 14.
EP20120176711 2011-07-19 2012-07-17 Dispositif de racleur et agencement de racleurs destinés au fonctionnement avec un tel dispositif Not-in-force EP2573264B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201110051929 DE102011051929B3 (de) 2011-07-19 2011-07-19 Vorrichtung für einen Schaber und Schaberanordnung mit einer solchen Vorrichtung

Publications (2)

Publication Number Publication Date
EP2573264A1 EP2573264A1 (fr) 2013-03-27
EP2573264B1 true EP2573264B1 (fr) 2015-02-25

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DE (1) DE102011051929B3 (fr)

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ES2834981T3 (es) * 2013-04-26 2021-06-21 Kadant Inc Sistemas para la medición de vibraciones y carga de la cuchilla rascadora
US9873981B2 (en) 2015-07-16 2018-01-23 Gpcp Ip Holdings Llc Doctor control systems for papermaking machines and related methods
DE102017119526B4 (de) 2017-08-25 2021-02-25 Joh. Clouth GmbH & Co KG Vorrichtung zum Halten von Schaberklingen
CN113529212B (zh) * 2021-06-28 2023-05-02 上海化工研究院有限公司 一种超高分子量聚乙烯纤维中溶剂的快速分离方法及装置

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FI77490B (fi) * 1987-06-23 1988-11-30 Safematic Ltd Oy Foerfarande foer identifiering av ytskador pao en stenvals i ett pressparti vid en pappersmaskin eller liknande.
DE102004018421B3 (de) * 2004-04-08 2005-07-21 Joh. Clouth Gmbh & Co. Kg Kalibriervorrichtung
DE102008001265A1 (de) * 2008-04-18 2009-10-22 Voith Patent Gmbh Schabervorrichtung und Rakelvorrichtung
DE102008001624A1 (de) * 2008-05-07 2009-11-12 Voith Patent Gmbh Schabervorrichtung

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