EP3727697A1 - Walzenhebelmodul - Google Patents
WalzenhebelmodulInfo
- Publication number
- EP3727697A1 EP3727697A1 EP19702026.6A EP19702026A EP3727697A1 EP 3727697 A1 EP3727697 A1 EP 3727697A1 EP 19702026 A EP19702026 A EP 19702026A EP 3727697 A1 EP3727697 A1 EP 3727697A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller lever
- bearing
- central body
- roller
- grinding
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/007—Mills with rollers pressed against a rotary horizontal disc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/004—Shape or construction of rollers or balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/04—Mills with pressed pendularly-mounted rollers, e.g. spring pressed
Definitions
- the invention relates to a roller lever module for a grinding roller of a roller mill, which has a rotating grinding plate and grinding rollers rolling thereon.
- the roller lever module has a roller lever, on the grinding plate end of which a grinding roller can be attached. Furthermore, a guide and storage unit with a guide axis is provided.
- the roller lever is coupled with its side facing away from the grinding plate to the guide and bearing unit, the guide and bearing unit being formed as a linear guide for displacing the roller lever axially along the guide axis.
- Rolling mills are used to crush any regrind.
- a rotating grinding table is usually provided, on which stationary, rotatable grinding rollers roll. These are not necessarily driven, but are often set in rotation by the regrind that is on the rotating grinding table. Since the material to be ground does not form an ideal grinding bed on the grinding table, it is necessary that the grinding rollers can change their distance from the grinding table.
- Various constructions are known for this. It is essential here that the construction allows sufficient freedom of movement for the grinding rollers. Such constructions are referred to as roller lever modules.
- the grinding rollers themselves are each connected to an axle which is mounted in the roller lever.
- the roller lever itself is connected to the roller lever module.
- the construction is essential so that the previously described compensatory movements can be carried out. Since vibrations also occur during the grinding process, it is also necessary to ideally intercept and dampen them using the roller lever modules.
- the construction of a roller lever module is evident, for example, from WO 2017/137056.
- the roller lever is fastened in a fork-like device, which in turn allows the roller lever to pivot in an axis perpendicular to the axis of rotation of the grinding roller.
- a disadvantage of the known systems is that they often have a relatively large design.
- mill technology however, there is a trend towards ever larger mills, which in turn have multiple grinding rollers. Therefore, there is a desire to build roller lever modules as compact as possible so that as many grinding rollers as possible can be arranged around a grinding table to save space.
- the invention is therefore based on the object of specifying a roller lever module which has a compact construction.
- the guide and bearing unit has a central body which is elongated in the direction of the guide axis, the central body being surrounded by an outer sleeve.
- the outer sleeve is arranged and / or fastened on the central body so as to be displaceable in the direction of the guide axis.
- At least one linear guide bearing is provided between the outer sleeve and the central body.
- a unit for transmitting a torque from the roller lever to the central body is arranged between the outer sleeve and the central body.
- the invention is based on the idea of distributing the forces acting on the grinding roller and thus on the roller lever to different units.
- the roller lever module must be suitable for the loads arising from the roller force, i.e. the pressure with which the grinding roller presses the material to be ground on the grinder and the loads from the bowl rotation, i.e. in particular the torques caused by the rotation of the bowl over the regrind onto the roller and thus transferred to the roller lever to record.
- two separate devices for receiving and forwarding the corresponding loads are provided.
- the forces and loads that arise from the pressure of the grinding rollers themselves are absorbed and transmitted in particular by the at least one linear guide bearing.
- the forces are absorbed by the elongated central body into a foundation by means of a bracket provided for it.
- the division of these two force-transmitting units makes it possible to make the guide and bearing unit particularly compact and narrow. This is also supported in that both the at least one linear guide bearing and the unit for transmitting a torque are arranged between the outer sleeve surrounding the central body and the central body.
- the at least one linear guide bearing also serves to allow the rollers to move and thus the grinding roller connected to them to move in the direction of the guide axis.
- unevenness on the grinding bed can be compensated for.
- the grinding gap that is, the standard distance between the grinding roller and the grinding plate, can also be adjusted. This is advantageous, for example, if different materials are to be ground.
- any type of bearing can be used as a linear guide bearing.
- a hydrostatic bearing is used for this.
- Hydrostatic bearings have a high power density, which in turn enables the compact design of the roller lever module.
- the use of a single linear guide bearing is sufficient. However, it is preferred if two or more guide bearings are provided.
- the first linear guide bearing can be in the upper area of the central body and the second linear guide bearing can be arranged in the lower region of the central body. Such an arrangement promotes a good transmission of the forces generated on the roller lever to the central body.
- this arrangement offers to arrange the unit for transmitting the torque between the at least first and the at least second linear guide bearings.
- the unit for transmitting the torque can be arranged in the center.
- the unit for transmitting the torque can be performed arbitrarily.
- a curved tooth coupling parts of the curved tooth coupling, for example teeth on the central body, can be formed.
- it can also be provided to provide an inner sleeve which surrounds the central body. This can be arranged non-rotatably on the central body.
- corresponding components of the curved tooth coupling can also be formed on the inner sleeve instead of on the central body. This has the advantage that the inner sleeve can be replaced if there is damage, but the central body can still be used.
- the teeth or engaging parts on the inner sleeve or on the central body have a longer extension along the guide axis than the teeth or on handle elements which are formed on the inside of the outer sleeve.
- the linear guide bearing can be designed as a hydrostatic bearing.
- the hydrostatic bearing can have a bearing sleeve which essentially has an inner diameter which corresponds to the outer diameter of the central body or the inner sleeve.
- various elements can be provided on the bearing sleeve or formed on or in this.
- the bearing sleeve has radial lubricant supply channels. Likewise, axial lubricant return channels can be seen on the bearing sleeve. It is also possible to form pressure pockets on the inside of the bearing sleeve.
- the lubricant supply channels preferably extend radially through the storage sleeve and serve to supply lubricant from the outside of the storage sleeve to its inside. Lubricant supplied can then flow up or down through the axially arranged lubricant return channels on the inside of the bearing sleeve.
- the pressure pockets provided on the inside of the bearing sleeve serve for at least temporary absorption of lubricant. The lubricant flows through the lubricant supply channels into the pressure pockets and remains in these or is continuously exchanged in that an un dangerous volume is transported through the lubricant return channels, which is simultaneously added through the lubricant supply channels.
- a free space between the outer sleeve and the central body is filled with lubricant. If an inner sleeve is provided, then there is the free space between the outer sleeve and the inner sleeve. Free space is the space that is not yet occupied by components after arranging one or more linear guide bearings and the unit for transmitting a torque. Providing and filling this space with Lubricant is used for good lubrication of the components arranged there and thus supports the longevity of the construction of the roller lever module.
- a lubricant suction can be seen before.
- hydrostatic bearings which ideally have a continuous flow of lubricant
- the arrangement of the lubricant suction in the upper end region of the roller lever module has the advantage that it ensures that a sufficiently high level of lubricant is present in the free space mentioned.
- roller lever module can be achieved if there is essentially ambient pressure in the free space.
- the lubricant which is in the free space, is not under pressure, but is simply pumped through and is, for example, arranged in the upper area of the lubricant suction system with the same volume per unit time as it is, especially in Area of the hydrostatic bearing.
- Sealing the free space of the roller lever module can be achieved, for example, by providing a piston ring seal in the upper and lower loading areas.
- the roller lever which has the axis of the grinding roller, is preferably attached to the outer sleeve. This type of fastening also enables a relatively compact structure.
- a hydraulic cylinder can be provided on the grinding roller lever. This is preferably aligned with a pushing or pulling direction essentially parallel to the central body per or the guide axis of the guiding and bearing unit.
- the grinding roller lever module according to the invention is preferably used in a roller mill with a grinding plate and grinding rollers rolling thereon.
- pro Grinding roller provided a grinding roller lever module.
- the roller lever module can also be referred to as a grinding roller lever module.
- the compact design of the grinding roller lever modules according to the invention makes it possible to provide two grinding roller lever modules on a common stand, which can be made of concrete, for example. Again, this enables a relatively compact structure around the roller mill, so that there is enough space for further equipment necessary for operation.
- Figure 1 shows the basic components of a roller mill with six according to the invention
- Figure 2 is a view of a stand with two roller lever modules according to the invention.
- Figure 3 shows a section through an inventive roller lever module
- Figure 4 is a perspective view of a bearing sleeve of a hydrostatic
- Figure 5 is a plan view of a bearing sleeve of the hydrostatic bearing.
- a roller lever module 1 essentially consists of a roller lever 3 and a guide and bearing unit 20.
- a grinding roller 10 is provided at the end of the roller lever 3 on the grinding plate side. This is rotatably connected to an axis which runs inside the roller lever 3.
- the grinding plate 101 is only shown as a ring. In a non-simplified representation of a roller mill, it is usually an essentially circular disk.
- the grinding table 110 is set in rotation.
- the regrind given to him is transported via centrifugal forces or centrifugal forces outwards to the grinding rollers 10.
- the ground material transported under the grinding rollers 10 is comminuted on the one hand by the pressure which the grinding rollers 10 exert on the ground material.
- the contact with the regrind ensures that the grinding rollers 10 rotate about their axis.
- FIG. 2 An enlarged illustration of a stand 102 with two roller lever modules 1 is shown in FIG. 2.
- Each roller lever module 1 has its own bearing block 30.
- the guide and storage unit 20 of each roller module 1 is fitted in this.
- a linear movement of the grinding roller 10 perpendicular to the grinding plate 101 is possible by means of the guide and bearing unit 20 to which the roller lever 3 is attached.
- the detailed structure of the guide and storage unit 20 is described below with reference to FIG. 3.
- a hydraulic cylinder 5 is seen before. This serves to vary the force that is applied to the grinding bed on the grinding plate 101 by means of the grinding roller 10. If the hydraulic cylinder 5 pulls, this force is increased, if it presses, the force can be reduced. In more detail, increasing the hydraulic pressure on the piston rod side leads to a higher pulling force on the piston rod. Lowering the hydraulic pressure on the piston rod side leads to a reduction in force, as does increasing the hydraulic pressure in the piston-side cylinder chamber, which is shown below in this figure. This leads to the rollers lifting off when the pressure force is greater than the weight force of the moving system.
- Fig. 3 is a sectional view of a guide and storage unit 20 of an inventive roller lever module 1 is shown.
- a central body 22 which is cylindrical.
- An inner sleeve 25 is provided around the central body 22. This is preferably connected to the central body 22 in a rotationally fixed manner.
- An outer sleeve 24 is in turn arranged around the inner sleeve 25.
- parts of a curved tooth coupling 28 are formed, which serve to transmit a torque from the roller lever 3.
- the outer sleeve 24 is preferably mounted linearly in the axial direction of the central body 22.
- larger areas of the curved tooth coupling are formed on the inner sleeve 25 provided permanently on the central body 22.
- Smaller parts which engage, in particular comb, in the areas on the inner sleeve 25 are provided on the outer sleeve 24. With a linear displacement of the outer sleeve 24, these parts move within the parts which are provided on the inner sleeve 25, so that a force or a torque transmission is still possible.
- a hydrostatic bearing 28 is arranged in the lower and upper area of the guide and bearing unit 20. This extends between the outer 24 and the inner sleeve 25. At the contact area between the outer sleeve 24 and the inner sleeve 25, a suction point 36 is provided at which the lubricant introduced for the hydrostatic bearing 28 can be sucked off again.
- a seal for example a piston ring seal 24, is provided in order to seal the free space 27 between the sleeves 24, 25, so that the lubricant can only be removed via the suction point 36.
- a similar seal can also be provided at the upper contact point or on the contact surface between the outer sleeve 24 and the inner sleeve 25.
- the roller lever 3 itself is attached to the outer sleeve 24.
- a hydrostatic bearing 26 This consists essentially of a bearing sleeve 42.
- the La gerhülse 42 has an inner diameter which corresponds essentially to the outer diameter of the inner sleeve.
- lubricant feeds 44 In the bearing sleeve 42 radially extending lubricant feeds 44 are provided.
- Axially designed lubricant returns 46 are used to let the lubricant supplied via the lubricant feeds 44 drain again.
- pressure pockets 48 are provided between the lubricant returns 46, in which lubricants are ideally located during operation, so that the bearings and guiding action of the hydrostatic bearings 26 are present.
- Lubricant is located in the free space between the inner sleeve 25 and the outer sleeve 24 and is supplied to the hydrostatic bearings 26 via the lubricant supply channels 44.
- This lubricant has a damping effect on vibrations that cause an up and down movement of the roller lever 3. This means that with the roller lever module 1 according to the invention, a roller mill has a quieter run and can thus be operated more efficiently.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2019/051184 WO2020098973A1 (de) | 2019-01-17 | 2019-01-17 | Walzenhebelmodul |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3727697A1 true EP3727697A1 (de) | 2020-10-28 |
| EP3727697B1 EP3727697B1 (de) | 2022-04-27 |
Family
ID=65237002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19702026.6A Active EP3727697B1 (de) | 2019-01-17 | 2019-01-17 | Walzenhebelmodul |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3727697B1 (de) |
| JP (1) | JP7321153B2 (de) |
| CN (1) | CN111712326B (de) |
| DK (1) | DK3727697T3 (de) |
| WO (1) | WO2020098973A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113558498B (zh) * | 2021-08-18 | 2022-09-06 | 苏州咖乐美咖啡机科技有限公司 | 研磨装置 |
| JP2024024559A (ja) * | 2022-08-09 | 2024-02-22 | 川崎重工業株式会社 | 竪型ローラミル及び減速装置のメンテナンス方法 |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB186956A (en) * | 1921-05-13 | 1922-10-13 | Donald John Gunn Miller | Improvements in grinding or crushing machines |
| GB508877A (en) * | 1938-02-02 | 1939-07-07 | H J & A Coulthurst Ltd | Improvements in or relating to grinding mills of the edgerunner type |
| DE2703535C2 (de) * | 1977-01-28 | 1986-07-10 | Loesche GmbH, 4000 Düsseldorf | Wälzmühle |
| JPS614547A (ja) * | 1984-06-16 | 1986-01-10 | 川崎重工業株式会社 | 堅型ミル |
| JPS6351649U (de) * | 1986-09-22 | 1988-04-07 | ||
| DE3801728C2 (de) * | 1988-01-21 | 1998-07-02 | Krupp Polysius Ag | Rollenmühle |
| JPH0716623B2 (ja) * | 1988-07-08 | 1995-03-01 | 石川島播磨重工業株式会社 | 竪型ローラミルのローラ圧下機構 |
| JPH0716483A (ja) * | 1993-07-02 | 1995-01-20 | Ube Ind Ltd | 竪型粉砕機 |
| US5456535A (en) * | 1994-08-15 | 1995-10-10 | Ingersoll-Rand Company | Journal bearing |
| JP2956882B2 (ja) * | 1994-09-09 | 1999-10-04 | 宇部興産株式会社 | 竪型粉砕機 |
| DE19603655A1 (de) | 1996-02-01 | 1997-08-07 | Loesche Gmbh | Wälzmühle |
| JP3285805B2 (ja) * | 1997-12-22 | 2002-05-27 | 株式会社日立製作所 | 圧延機の駆動装置及びその制御方法 |
| DE10145478B4 (de) * | 2001-09-14 | 2007-01-18 | Erich Teufl | Hubkolbenmaschine mit umlaufendem Zylinder |
| DE102004062400B4 (de) * | 2004-12-23 | 2006-10-26 | Loesche Gmbh | Wälzmühle in Modulbauweise |
| JP2006266456A (ja) | 2005-03-25 | 2006-10-05 | Nsk Ltd | 静圧空気軸受直線案内 |
| JP6024302B2 (ja) | 2012-08-31 | 2016-11-16 | 宇部興産機械株式会社 | 竪型粉砕機 |
| JP2016528038A (ja) * | 2013-08-19 | 2016-09-15 | ロエシェ ゲーエムベーハー | 竪型ローラミル |
| JP2015110962A (ja) | 2013-12-06 | 2015-06-18 | 日産自動車株式会社 | ギヤカップリング及びこれを備えた車両用ホイール駆動装置 |
| EP3414013B1 (de) | 2016-02-08 | 2019-05-22 | Loesche GmbH | Mahlwalzen-vorrichtung |
| US10343173B2 (en) * | 2016-04-29 | 2019-07-09 | General Electric Technology Gmbh | System, method and apparatus for servicing a pulverizer |
| JP6728977B2 (ja) | 2016-05-26 | 2020-07-22 | 宇部興産機械株式会社 | 竪型粉砕機 |
| US10493462B2 (en) * | 2016-06-21 | 2019-12-03 | General Electric Technology Gmbh | System, method and apparatus for upgrading a pulverizer |
| CN206492547U (zh) * | 2016-12-29 | 2017-09-15 | 江门市阪桥电子材料有限公司 | 油墨研磨装置 |
-
2019
- 2019-01-17 EP EP19702026.6A patent/EP3727697B1/de active Active
- 2019-01-17 WO PCT/EP2019/051184 patent/WO2020098973A1/de not_active Ceased
- 2019-01-17 JP JP2020520803A patent/JP7321153B2/ja active Active
- 2019-01-17 DK DK19702026.6T patent/DK3727697T3/da active
- 2019-01-17 CN CN201980005792.2A patent/CN111712326B/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2022522380A (ja) | 2022-04-19 |
| CN111712326A (zh) | 2020-09-25 |
| EP3727697B1 (de) | 2022-04-27 |
| DK3727697T3 (da) | 2022-05-09 |
| CN111712326B (zh) | 2023-02-03 |
| WO2020098973A1 (de) | 2020-05-22 |
| JP7321153B2 (ja) | 2023-08-04 |
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