EP3874091A1 - Rotor für ein heizaggregat - Google Patents
Rotor für ein heizaggregatInfo
- Publication number
- EP3874091A1 EP3874091A1 EP19786554.6A EP19786554A EP3874091A1 EP 3874091 A1 EP3874091 A1 EP 3874091A1 EP 19786554 A EP19786554 A EP 19786554A EP 3874091 A1 EP3874091 A1 EP 3874091A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor shaft
- rotor
- attachments
- suspension
- stock suspension
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/004—Methods of beating or refining including disperging or deflaking
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C7/00—Digesters
- D21C7/06—Feeding devices
Definitions
- the invention relates to a rotor for a heating unit with a rotor housing, consisting of a rotatable rotor shaft provided in the rotor housing, which is provided with attachments for influencing a material suspension flowing through the rotor housing and to be heated. It also relates to a rotor shaft for such a rotor.
- the rotors of the previously common heating units have rotor shafts on which various wing-like attachments or rotor blades are mounted, which essentially loosen up the material to be heated and mix it with the heating medium.
- the substance comes to higher temperatures mainly due to the mixture with the heating medium.
- the heating units concerned include, for example, heating screws, in which wet pulp suspensions are heated with the help of steam, and so-called SpeedHeaters, which perform the same task, but which are designed differently mainly due to significantly higher rotor speeds.
- the speed of the rotor in particular in the case of such speed heaters, is so high that the stock suspension is preferably thrown onto the outer wall of the rotor or machine housing.
- the inner diameter of the material ring formed by the material suspension down to the rotor shaft is undesirably reduced, which increases the risk of clogging in the rotor or machine housing. If the distribution space for the heating medium on the rotor shaft is reduced, this leads but this now leads to a reduction in mixing efficiency and an increase in shaft wear.
- rotors for heating units are already known, in which the attachments are not only attached to the rotor shaft at right angles, but also have a different angle to the axis of the rotor shaft, which are in a range of up to 75 °.
- the orientation of the add-on parts is chosen so that the stock suspension is propelled in the direction of the machine outlet for a given direction of rotation of the rotor shaft.
- the invention has for its object to provide a rotor and a rotor shaft of the type mentioned, with which a more efficient loosening and mixing of the stock suspension with the heating medium is achieved.
- the rotor according to the invention for a heating unit comprises a rotor housing and a rotatable rotor shaft which is provided in the rotor housing and which is to be heated with attachments for influencing a flow through the rotor housing
- At least some of the add-on parts and / or additional surfaces provided on at least some of the add-on parts are designed and / or aligned with respect to the rotor shaft axis in such a way that the inside diameter measured perpendicular to the rotor shaft axis of the rotor shaft around the rotor shaft at a predetermined operating speed form the stock suspension ring is kept at a minimum value which is larger than the diameter of the rotor shaft. Due to this training, a more efficient loosening and a more efficient mixing of the stock suspension with the heating medium is achieved.
- At least some of the add-on parts and / or the additional surfaces provided on at least some of the add-on parts are preferably designed and / or aligned with respect to the rotor shaft axis such that the stock suspension flowing through the rotor housing, in particular repeatedly, is generally radial with respect to the rotor shaft is thrown outwards and conveyed in the axial direction.
- the add-on parts and / or the additional surfaces provided on at least some of the add-on parts are designed and / or aligned with respect to the rotor shaft axis in such a way that the axial, i.e. distinguishes the conveying behavior of the stock suspension parallel to the rotor shaft axis in a region of the rotor housing through which the stock suspension flows radially with respect to the rotor shaft axis from the axial conveying behavior of the stock suspension in a radially outer region of the rotor housing.
- the attachments preferably have, at least in part, a different outer diameter measured perpendicular to the rotor shaft axis.
- a different axial delivery behavior of the stock suspension in a radially inner area of the rotor housing through which the stock suspension flows and with respect to the rotor shaft and a radially outer area of the rotor housing can be achieved, in particular, by such different outer diameters of the attachments.
- This function can be optimized by an appropriate shape and orientation of the attachments concerned.
- the attachments can be at least partially fixed to the rotor shaft in a variable position relative to one another. It is always possible to select the optimal position of the attachment parts relative to one another for the most efficient operation.
- the add-on parts can be provided at least partially on rings which can be pushed over the rotor shaft and fixed at predeterminable positions on the rotor shaft.
- the attachments can be provided, for example, at least in part on rings that can be welded or welded to the rotor shaft.
- the attachments are preferably provided or attachable relative to one another on the rotor shaft in such a way that, at the predeterminable operating speed of the rotor shaft, with the most efficient loosening and mixing of the stock suspension with a heating medium, in particular also the lowest possible power consumption. would take a drive motor provided for driving the rotor shaft.
- the additional surfaces provided on at least some of the add-on parts are at least partially designed and / or aligned in such a way that the stock suspension can be driven in the axial direction and / or in particular depending on the direction of rotation of the rotor shaft is driven back to brake the stock suspension.
- attachments and / or surfaces positively angled in addition to the axial propulsion of the stock suspension with respect to the rotor shaft axis, are also provided with attachments and / or surfaces negatively angled with respect to the rotor shaft axis.
- a too rapid forward movement of the stock suspension in the direction of the outlet can thus be slowed down, which ensures a sufficient dwell time of the stock suspension in the meat processing unit and thus an optimal temperature increase of the stock suspension. It can also be used to ensure that the temperature distribution within the substance is as homogeneous as possible.
- the rotor shaft is not only equipped with wing-like attachments, in particular, for loosening and mixing the stock suspension with a heating medium, but also with additional attachments, to ensure the minimum value of the interior, which is larger than the outside diameter of the rotor shaft. nominal diameter of the material suspension ring formed at a predeterminable operating speed of the rotor shaft.
- additional areas can be provided on the add-on parts for loosening and mixing the stock suspension with the heating medium to ensure the minimum, but larger than the outside diameter of the rotor shaft, of the inside diameter of the stock suspension ring formed at a predeterminable operating speed of the rotor shaft. to be seen.
- the rotor shaft can be used to loosen and mix the material suspension with a heating medium, in particular also with additional attachments
- the rotor shaft is provided with additional attachments which are positively angled with respect to the rotor shaft axis for the axial drive of the stock suspension.
- additional surfaces for the axial drive of the material suspension can advantageously also be arranged on the attachments for loosening and mixing the material suspension with the heating medium.
- the rotor shaft is provided with additional attachments which are angled negatively with respect to the rotor shaft axis to brake the axial propulsion of the stock suspension and / or on the attachments for loosening and mixing the stock suspension with the heating medium
- Rotor shaft negatively angled surfaces are arranged to brake the axial propulsion of the stock suspension.
- the rotor shaft according to the invention for a rotor according to the invention is characterized in that the rotor shaft with in particular wing-like attachments for loosening and mixing the stock suspension with a heating medium and with additional attachments and / or additional surfaces arranged on the attachments for loosening and mixing the stock suspension with the heating medium is provided, which are designed and / or aligned with respect to the rotor shaft axis in such a way that the inner diameter of the material suspension ring, which is measured perpendicular to the rotor shaft axis, is kept at a minimum value which is greater than the outer diameter at a predeterminable operating speed of the rotor shaft the rotor shaft.
- FIGS. 2 to 7 show a schematic perspective illustration of the basic structure of an exemplary embodiment of a rotor shaft of a rotor for a meat processing unit with, in particular, wing-like attachments for loosening and mixing the material suspension with a heating medium, the rotor shaft according to the invention being used, for example, from FIGS. 2 to 7 visible additional attachments and / or additional surfaces can be provided,
- FIG. 2 shows a schematic illustration of exemplary embodiments in addition to the attachments for loosening and mixing the stock suspension with the heating medium on the rotor shaft according to FIG. 1, additional attachments that can be provided to ensure a minimal, but larger than the outside diameter of the rotor shaft Value of the inner diameter of the material suspension ring formed at a predeterminable operating speed of the rotor shaft,
- FIG. 3 shows a schematic illustration of an exemplary embodiment of an additional attachment which can be provided on the rotor shaft according to FIG. 1 in the area of the inlet coils for the first centrifuging of the stock suspension, generally radially outward and / or axially forward,
- FIG 4 shows a schematic illustration of exemplary embodiments of additional attachments which can be provided on the rotor shaft according to FIG on additional parts that can be provided on the attachments for loosening and mixing the stock suspension with the heating medium, additional planar surfaces for axially propelling the stock suspension,
- FIG. 5 shows a schematic representation of exemplary embodiments of additional surfaces for the axial propulsion of the stock suspension, which are attached laterally to attachments for loosening and mixing the stock suspension with the heating medium, and are positively angled with respect to the rotor shaft axis,
- FIG. 6 shows a schematic illustration of exemplary embodiments of attachments on the side for loosening and Mixing the stock suspension with the heating medium has additional surfaces that are angled negatively with respect to the rotor shaft axis to brake the axial propulsion of the stock suspension, and
- FIG. 7 shows a schematic illustration of an exemplary embodiment of a rotor shaft provided with additional attachments and additional surfaces and of an outer annular space containing the material suspension ring which is formed and which is located radially between the rotor shaft and which rotates at an exemplary speed Rotor or machine housing and an interior extending up to the rotor shaft.
- Fig. 1 shows a schematic perspective view of the basic structure of an exemplary embodiment of a rotor shaft 10 of a rotor 12 for a meat processor with in particular wing-like attachments 14 for loosening and mixing a stock suspension with a heating medium.
- This rotor shaft 10 can, according to the invention, be provided with additional attachments and / or additional surfaces, for example, as shown in FIGS. 2 to 7.
- the rotor 12 comprises a rotor housing 16 (see FIG. 7) through which the stock suspension to be heated flows, in which the rotor shaft 10 is arranged.
- the basic structure of the rotor shaft 10 also includes inlet coils 18 for feeding the stock suspension in the axial direction and return coils 20 in the outlet region.
- the attachments 14 for loosening and mixing the stock suspension with a heating medium are provided, for example, on rings 22 welded to the rotor shaft 10.
- a rotor shaft 10 as shown in FIG.
- FIG. 2 shows a schematic representation of exemplary embodiments in addition to the attachments 14 for loosening and mixing the material suspension with the heating medium on the rotor shaft 10 according to FIG. 1, but additional attachments 24 that can be provided to ensure a minimal, compared to the outer diameter of the rotor shaft 10 Larger value Ri, min of the inner diameter of the material suspension ring 26 which forms at a predeterminable operating speed of the rotor shaft 10 (cf. in addition to FIG. 1 and also FIG. 7 again).
- additional attachments 28 for the first centrifuging of the stock suspension can be provided generally radially outward, an exemplary embodiment of which is shown in FIG. 3.
- additional attachments 24 not only on the rotor shaft 10 according to FIG. 1 can be used to ensure a minimum value Ri, min of the inner diameter of the rotor shaft which is greater than the outer diameter of the rotor shaft at a predeterminable operating speed 10 forming material suspension ring 26, but also on additional parts 14 for loosening and mixing the material suspension with the heating medium, additional flat surfaces 30 for axially propelling the material suspension.
- Ri, min of the inner diameter of the rotor shaft which is greater than the outer diameter of the rotor shaft at a predeterminable operating speed 10 forming material suspension ring 26, but also on additional parts 14 for loosening and mixing the material suspension with the heating medium, additional flat surfaces 30 for axially propelling the material suspension.
- additional flat surfaces 30 for axially propelling the material suspension.
- FIG. 5 shows exemplary embodiments of additional surfaces 34, which are attached laterally to attachments 14 for loosening and mixing the stock suspension with the heating medium and positively angled with respect to the rotor shaft axis 32 for axially propelling the stock suspension.
- add-on parts 24 are again used to ensure a minimum value Ri, min of the inner diameter of the stock suspension ring 26 that forms at a predeterminable operating speed of the rotor shaft 10, but larger than the outside diameter of the rotor shaft 10 to recognize (see also Fig. 7 again).
- the rotor shaft 10 can also have additional surfaces 36 attached to the side on attachments 14 for loosening and mixing the stock suspension with the heating medium and angled negatively with respect to the rotor shaft axis 32 for braking the axial propulsion of the stock suspension be provided.
- additional surfaces 26 attached laterally to the attachments 14 are shown.
- FIG. 7 shows a schematic representation of an exemplary embodiment of a rotor 12 according to the invention with a rotor shaft 10 arranged in a rotor housing 16, which with attachments 14 for loosening and mixing the stock suspension with the heating medium, additional attachments 24 to ensure a minimum value Ri, min larger than the outside diameter of the rotor shaft 10, min of the inside diameter of the stock suspension ring 26 which forms at a predeterminable operating speed of the rotor shaft 10 and laterally on the attachments 14 for loosening up and mixing the
- Material suspension is provided with the heating medium, additional surfaces 34 positively angled with respect to rotor shaft axis 32 for axially propelling the material suspension.
- FIG. 7 shows an outer annular space 28 which results when the rotor shaft 10 rotates at an exemplary speed and contains the material suspension ring 26 which is formed and which is located radially between the rotor or machine housing 16 and a extends to the rotor shaft 10 interior 40.
- different conveying speeds are conceivable.
- the interior space is minimal, but in comparison to the outside diameter of the rotor shaft, the inside diameter of the material suspension ring is larger
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
- Accessories For Mixers (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018127914.0A DE102018127914A1 (de) | 2018-11-08 | 2018-11-08 | Rotor für ein Heizaggregat |
| PCT/EP2019/077303 WO2020094322A1 (de) | 2018-11-08 | 2019-10-09 | Rotor für ein heizaggregat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3874091A1 true EP3874091A1 (de) | 2021-09-08 |
Family
ID=68210802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19786554.6A Pending EP3874091A1 (de) | 2018-11-08 | 2019-10-09 | Rotor für ein heizaggregat |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3874091A1 (de) |
| CN (1) | CN112969828B (de) |
| DE (1) | DE102018127914A1 (de) |
| WO (1) | WO2020094322A1 (de) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT249491B (de) * | 1959-09-19 | 1966-09-26 | P J Wolff & Soehne G M B H App | Maschine zum Aufschließen von Faserstoffen |
| FI62872C (fi) * | 1978-06-06 | 1983-03-10 | Ahlstroem Oy | Anordning foer silning av fibersuspensioner |
| CN2094570U (zh) * | 1991-06-25 | 1992-01-29 | 毛似柏 | 高浓水力碎浆机的转子 |
| AT411604B (de) * | 2002-03-27 | 2004-03-25 | Andritz Ag Maschf | Verfahren und vorrichtung zur dispergierung eines papierfaserstoffes |
| US7300540B2 (en) * | 2004-07-08 | 2007-11-27 | Andritz Inc. | Energy efficient TMP refining of destructured chips |
| EP1798330A1 (de) * | 2005-12-17 | 2007-06-20 | Voith Patent GmbH | Verfahren zur Dispergierung von Papierfaserstoff |
| CN100489193C (zh) * | 2006-10-30 | 2009-05-20 | 上海嘉翰轻工机械有限公司 | 一种气流成网干法纸成型设备 |
| CN201473828U (zh) * | 2009-09-04 | 2010-05-19 | 营口中捷仕达隔板有限公司 | 打浆机转子 |
| DE102011079230A1 (de) * | 2011-07-15 | 2013-01-17 | Voith Patent Gmbh | Drucksortierer |
| SE536456C2 (sv) * | 2011-12-15 | 2013-11-12 | Metso Paper Sweden Ab | Blandningsenhet innefattande åtminstone två rotorkroppar föranvändning i en blandningsanordning och en blandningsanordning |
| DE102012215964A1 (de) * | 2012-09-10 | 2014-03-13 | Voith Patent Gmbh | Fasersortierung |
| FI125635B (fi) * | 2015-02-05 | 2015-12-31 | Valmet Technologies Oy | Laite dispergoitavan kiertokuitumassan esilämmittämiseksi |
-
2018
- 2018-11-08 DE DE102018127914.0A patent/DE102018127914A1/de active Pending
-
2019
- 2019-10-09 CN CN201980073364.3A patent/CN112969828B/zh active Active
- 2019-10-09 EP EP19786554.6A patent/EP3874091A1/de active Pending
- 2019-10-09 WO PCT/EP2019/077303 patent/WO2020094322A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020094322A1 (de) | 2020-05-14 |
| CN112969828A (zh) | 2021-06-15 |
| DE102018127914A1 (de) | 2020-05-14 |
| CN112969828B (zh) | 2023-05-12 |
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Legal Events
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