EP4584434A1 - Rotorwechselvorrichtung für einen refiner - Google Patents
Rotorwechselvorrichtung für einen refinerInfo
- Publication number
- EP4584434A1 EP4584434A1 EP23765192.2A EP23765192A EP4584434A1 EP 4584434 A1 EP4584434 A1 EP 4584434A1 EP 23765192 A EP23765192 A EP 23765192A EP 4584434 A1 EP4584434 A1 EP 4584434A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- changing device
- refiner
- drive
- housing
- 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
- D21D1/20—Methods of refining
- D21D1/30—Disc mills
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
Definitions
- Different fiber materials can be treated in refiners.
- treatment tools tailored to the requirements also known as clothing or grinding clothing, are available.
- the drive comprises a gearbox.
- the transmission can translate the movement or force initiated by the drive.
- a small drive can be used and provided.
- manual operation can be made easier or made possible in the first place.
- the transmission preferably has a transmission ratio in the range from 10 to 40.
- a thread pitch in the range of 3mm to 7mm has proven to be advantageous.
- a spindle gear is provided as the gear.
- the design of a spindle gear is very compact and provides a high gear ratio. This means that manual dismantling can be carried out comfortably by one person alone.
- a lever gear is provided as the gear.
- a hydraulic cylinder-piston drive can be provided as the drive.
- Such cylinder-piston drives as linear drives can be operated with a pump and are available as compact units with a closed hydraulic circuit. This allows the rotor changing device to be provided as a compact unit.
- a changing device is attached to a swivel arm before maintenance is carried out. This means that a changing device can be used on several devices, thereby reducing the costs for maintaining the changing device.
- the bolt is connected to the drive shaft of the refiner, preferably screwed. This makes it possible to provide a flush connection without a shoulder between the bolt and the shaft, which has an advantageous effect on assembly/disassembly.
- the changing device is also prevented from moving away during assembly/disassembly.
- a blocking of the pivoting movement could also be provided in the case of a changing device connected to the device, such as a refiner, by means of a pivoting arm.
- the changing device has a flange provided with elongated holes as a connecting element.
- the elongated holes make it possible to connect to the rotor without having to position the rotor beforehand. This is advantageous in handling.
- the changing device For particularly compact storage on the refiner, it has proven to be advantageous to attach the changing device to the refiner by means of a swivel arm, whereby the swivel arm can be swiveled into the plane spanned by the swivel arm.
- the axial direction of the changing device preferably coincides with the plane of the pivot arm.
- the swivel arm comprises two arms, with the changing device being able to be positioned between the two arms when it is not being used to change the rotor.
- the changing device is positioned in front of the rotor, usually pivoted
- the rotor is firmly connected to the connecting element. If a flange is provided as a connecting element, the rotor can be screwed to the flange, for example. If the flange has elongated holes in particular, screwing is particularly easy. This means that the rotor is already secured and it is no longer possible to fall down.
- FIG. 1 schematic representation of a rotor changing device according to the invention on a swivel arm in a refiner
- Fig. 3 refiner with changing device and rotor within
- the fiber suspension can be divided into the two grinding gaps 37 through openings in the rotor 33. Due to the floating arrangement of the rotor 33, the conditions for processing are set independently for both grinding gaps 27. If the fiber suspension fails, the adjusting device 9 quickly relieves the load. In the event of damage or wear and tear, the grinding sets must be replaced regularly. A changing device 50 is used for this. A changing device 50 is described in more detail with reference to Figures 1 and 2.
- the changing device 50 has a drive 51.
- a spindle drive 63 with manual operation is shown here.
- the spindle drive 63 acts on an element guided by an axial guide, which is firmly connected to a bolt 75 for receiving the rotor 33.
- a flange 71 is firmly connected to the axial guide 59 as a connecting element 52.
- the flange 71 has elongated holes 73. The flange can be screwed firmly to the rotor using the elongated holes.
- a changing device 50 is shown in FIG. 3, with the bolt 75 already folded out for receiving and storing the rotor 33.
- the stop 35 is removed before the changing device 50 is pivoted in front of the rotor 33.
- the stop 35 is provided as an axial limit for the rotor 33, which is floatingly mounted on the drive shaft 25.
- the changing device 50 is pivoted in front of the rotor 33.
- the flange 71 is screwed to the rotor 33 and the drive shaft 25 is screwed to the bolt 75.
- the rotor is already secured with the fixed connection of the rotor 33 to the flange 71.
- the drive 51 is now actuated, whereby the rotor 33 is pulled onto the bolt 75.
- the connection to the drive shaft 25 of the refiner is then released again and the changing device 50 is pivoted.
- the rotor 33 is pivoted out of the refiner housing 21 by the changing device 50 and the pivot arm 55. Now the newly released grinding sets 27 can be changed.
- the rotor 33 can then be pivoted again and the rotor 33 can be positioned again in front of the drive shaft 25 of the refiner.
- the bolt 75 is connected to the drive shaft 25.
- By actuating the drive 51 the rotor 33 is pushed onto the drive shaft 25.
- the connection to the flange 71 is released again and the changing device 50 with the swivel arm can be swiveled back into the starting position.
- the stop 35 is screwed back onto the drive shaft 25 and the housing 21 can be closed again or the front grinding sets 27 can be changed beforehand, if not already done, or other maintenance work can still be carried out.
Landscapes
- Paper (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022122666 | 2022-09-07 | ||
| PCT/EP2023/073879 WO2024052199A1 (de) | 2022-09-07 | 2023-08-31 | Rotorwechselvorrichtung für einen refiner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4584434A1 true EP4584434A1 (de) | 2025-07-16 |
Family
ID=87934099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23765192.2A Pending EP4584434A1 (de) | 2022-09-07 | 2023-08-31 | Rotorwechselvorrichtung für einen refiner |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4584434A1 (de) |
| CN (1) | CN119855956A (de) |
| DE (1) | DE102023123744A1 (de) |
| WO (1) | WO2024052199A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3448934A (en) * | 1966-08-12 | 1969-06-10 | Frank C Vaughan | Refining apparatus |
| US6053440A (en) | 1999-03-02 | 2000-04-25 | Beloit Technologies, Inc. | Tangential discharge disk refiner |
| DE102020122645A1 (de) | 2020-08-31 | 2022-03-03 | Voith Patent Gmbh | Steuerung einer Faserbehandlungsvorrichtung |
-
2023
- 2023-08-31 WO PCT/EP2023/073879 patent/WO2024052199A1/de not_active Ceased
- 2023-08-31 CN CN202380064068.3A patent/CN119855956A/zh active Pending
- 2023-08-31 EP EP23765192.2A patent/EP4584434A1/de active Pending
- 2023-09-04 DE DE102023123744.6A patent/DE102023123744A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024052199A1 (de) | 2024-03-14 |
| DE102023123744A1 (de) | 2024-03-07 |
| CN119855956A (zh) | 2025-04-18 |
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Legal Events
| Date | Code | Title | Description |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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