EP4114572A1 - Faserbehandlungsvorrichtung - Google Patents
FaserbehandlungsvorrichtungInfo
- Publication number
- EP4114572A1 EP4114572A1 EP21701115.4A EP21701115A EP4114572A1 EP 4114572 A1 EP4114572 A1 EP 4114572A1 EP 21701115 A EP21701115 A EP 21701115A EP 4114572 A1 EP4114572 A1 EP 4114572A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- treatment
- housing
- bearing housing
- drive shaft
- bearing
- 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.)
- Granted
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
- D21D1/006—Disc mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/02—Crushing or disintegrating by disc mills with coaxial discs
- B02C7/04—Crushing or disintegrating by disc mills with coaxial discs with concentric circles of intermeshing teeth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/11—Details
-
- 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
- D21D1/20—Methods of refining
- D21D1/30—Disc mills
Definitions
- the invention relates to a device for treating fibrous material in a working space of a treatment housing, in which at least one rotating treatment tool and one non-rotating treatment tool are arranged, the treatment tools having a rotationally symmetrical shape, being arranged coaxially to one another and delimiting a treatment gap through which the fibrous material flows, the rotating treatment tool is connected to a rotating drive shaft which is mounted in a bearing of a bearing housing arranged outside the work space and is sealed between the work space and the bearing housing via a seal to the treatment housing which comprises at least one sealing channel for a barrier fluid.
- the treatment surfaces are formed by replaceable sets that are screwed to a corresponding base plate due to the relatively rapid wear and tear.
- the barrier fluid has an overpressure compared to the maximum pressure that occurs in the working space. Because of the overpressure, part of the barrier fluid enters the working space and mixes there with the pulp.
- the bearing housing has a relatively large oil reserve for oil sump lubrication of the bearing, which at the same time also ensures sufficient bearing cooling.
- the object of the invention is to increase the compactness with sufficient cooling of the device.
- the object was achieved in that the bearing housing has at least one cooling channel which is connected to a sealing channel and through which the barrier fluid flows.
- this bearing unit can be made more compact without requiring a separate cooling circuit.
- the barrier fluid is preferably guided to one or more sealing channels via at least one cooling channel of the bearing.
- the sealing channel should run in a ring around the drive shaft.
- water is particularly suitable as a barrier fluid, since leakage into the work space or the environment is not critical.
- the implementation of the bearing cooling is structurally simple if the bearing housing has a plurality of cooling channels, preferably running parallel to the drive shaft. In order to create a cooling circuit, these cooling channels can preferably be connected to one another via lines running outside the bearing housing.
- connection between the sealing channel and the cooling channel can also advantageously take place via lines running outside the treatment and bearing housing.
- the seal between the drive shaft and the treatment housing can advantageously be formed by a stuffing box because of the harsh environment.
- seals essentially consist of the stuffing box packing (the actual seal) and a stuffing box gland (a flange-like sleeve) with which the stuffing box packing is axially compressed by means of adjustment means, in particular screws and / or springs.
- the axial pressure also creates a radial pressure of the stuffing box packing on the shaft.
- the seal between the drive shaft and treatment housing can also be formed by a mechanical seal.
- mechanical seals In contrast to the stuffing box packing, mechanical seals have a sealing gap that is perpendicular to the shaft axis.
- the main components are two sliding rings, the inner one of which is fixed to the drive shaft and the outer one of which is stationary Housing is attached.
- the drive shaft should be mounted in a roller bearing in the bearing housing.
- Rolling bearings consist of an inner and an outer ring and the rolling elements (balls, rollers, etc.)
- the bearing housing should be designed separately. In conjunction with the cooling via the barrier fluid, this allows this storage unit to be designed in a compact manner and facilitates assembly and replacement of the same.
- the bearing housing should be attached to the treatment housing.
- the device is designed as a refiner or disperger, in particular as a deflaker.
- Deflakers are particularly suitable because their bearings are smaller.
- FIG. 1 a cross section through a deflaker with a storage unit
- FIG. 2 a cross section through the storage unit.
- the figures show a treatment device in the form of a deflaking device for dissolving specks of a fiber suspension with a treatment housing 5.
- This treatment housing 5 comprises a closed working space 4 in which a treatment tool 7 rotating via a drive shaft 1 and a stationary treatment tool 6 are arranged.
- the disk-shaped treatment tools 6, 7 each have a rotationally symmetrical shape, are arranged coaxially to one another and each have a plurality of ring-shaped teeth 14 arranged concentric to their center.
- the treatment gap 8 formed between the treatment tools 6, 7 is generally between 0.2 and 2 mm wide.
- the fiber suspension has a consistency between 2 and 6% oven-dry.
- the rotating treatment tool 7 is coupled via the drive shaft 1 to a drive (not shown here).
- the drive shaft 1 itself is stored in a separate bearing unit, which is shown in detail in FIG.
- the bearing unit consists essentially of the bearing 2 of the drive shaft 1 in the form of a roller bearing and the bearing housing 3 enclosing it.
- the bearing housing 3 is formed separately from the treatment housing 5 and has an oil reserve inside for the lubrication of the roller bearing.
- the separate design of the bearing housing 5 simplifies the construction and assembly or replacement of the same.
- a fastening of the bearing housing 3 on the treatment housing 5 here by means of screws ensures the necessary stability, whereby the drive shaft 1 can have an unsupported free section between the treatment housing 5 and the bearing housing 2.
- the drive shaft 1 is sealed between the working space 4 and the bearing housing 3 via a seal 10 to the treatment housing 5.
- This seal 10 between drive shaft 1 and treatment housing 5 can be designed as a mechanical seal or as a stuffing box.
- the seal 10 also comprises a sealing channel 9 for a barrier fluid.
- the sealing channel 9 runs annularly around the drive shaft 1, the barrier fluid being formed by water.
- the bearing housing 3 In order to be able to make the bearing housing 3 as compact as possible, it has, as can be seen in FIG. 2, several cooling channels 11 running parallel to the drive shaft 1.
- the barrier fluid of the sealing channel 9 functions at the same time as Cooling fluid. Accordingly, as indicated in FIG. 1, the barrier fluid first flows through the cooling channels 11 and the lines 12 running between them, before the barrier fluid then reaches the sealing channel 9 via a further line 13 running outside the treatment 5 and bearing housing 3. The barrier fluid can then be discharged from the sealing channel 9 and, after cooling, returned to the bearing housing 3.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Paper (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020105875.6A DE102020105875A1 (de) | 2020-03-05 | 2020-03-05 | Faserbehandlungsvorrichtung |
| PCT/EP2021/051050 WO2021175505A1 (de) | 2020-03-05 | 2021-01-19 | Faserbehandlungsvorrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4114572A1 true EP4114572A1 (de) | 2023-01-11 |
| EP4114572B1 EP4114572B1 (de) | 2024-03-13 |
Family
ID=74194745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21701115.4A Active EP4114572B1 (de) | 2020-03-05 | 2021-01-19 | Faserbehandlungsvorrichtung |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4114572B1 (de) |
| CN (1) | CN115315316B (de) |
| DE (1) | DE102020105875A1 (de) |
| FI (1) | FI4114572T3 (de) |
| WO (1) | WO2021175505A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12214359B1 (en) * | 2022-03-16 | 2025-02-04 | Fristam Pumps USA Limited Partnership | Colloid mill |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1047367A (de) | 1964-09-25 | |||
| US3845909A (en) | 1972-05-10 | 1974-11-05 | I Johansson | Grinding apparatus for vegetable materials |
| FI79563C (fi) * | 1988-03-21 | 1990-01-10 | Sunds Defibrator Jylha Oy | Taetning foer passagen foer en roterande axel vid en raffinoer som framstaeller mekanisk massa av lignocellulosahaltigt material. |
| DE102011005273A1 (de) * | 2011-03-09 | 2012-09-13 | Voith Patent Gmbh | Disperger |
| US9482345B2 (en) * | 2012-10-04 | 2016-11-01 | Sulzer Management Ag | Sealing arrangement for a rotating shaft |
| CN103628344B (zh) * | 2013-03-27 | 2016-03-02 | 杭州江菱造纸机械设备厂 | 高密封性双盘磨浆机 |
| CN204532443U (zh) * | 2015-01-28 | 2015-08-05 | 北京华晟环能科技有限公司 | 机械密封构件的阻隔液的循环系统 |
| CN206860882U (zh) * | 2017-03-21 | 2018-01-09 | 奉化市民联机械密封件有限公司 | 一种机械密封的隔离流体流程装置结构 |
| DE102017113795A1 (de) * | 2017-06-22 | 2018-12-27 | Voith Patent Gmbh | Faserbehandlungsanordnung |
| CN209222228U (zh) * | 2018-11-06 | 2019-08-09 | 湖北安捷路桥技术有限公司 | 一种用垫片调节定子与转子间隙的胶体磨 |
-
2020
- 2020-03-05 DE DE102020105875.6A patent/DE102020105875A1/de not_active Ceased
-
2021
- 2021-01-19 WO PCT/EP2021/051050 patent/WO2021175505A1/de not_active Ceased
- 2021-01-19 CN CN202180018725.1A patent/CN115315316B/zh active Active
- 2021-01-19 FI FIEP21701115.4T patent/FI4114572T3/fi active
- 2021-01-19 EP EP21701115.4A patent/EP4114572B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP4114572B1 (de) | 2024-03-13 |
| CN115315316A (zh) | 2022-11-08 |
| DE102020105875A1 (de) | 2021-09-09 |
| WO2021175505A1 (de) | 2021-09-10 |
| FI4114572T3 (fi) | 2024-05-30 |
| CN115315316B (zh) | 2024-07-26 |
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