EP3356048A1 - Rotor für eine zerkleinerungsvorrichtung - Google Patents
Rotor für eine zerkleinerungsvorrichtungInfo
- Publication number
- EP3356048A1 EP3356048A1 EP16770965.8A EP16770965A EP3356048A1 EP 3356048 A1 EP3356048 A1 EP 3356048A1 EP 16770965 A EP16770965 A EP 16770965A EP 3356048 A1 EP3356048 A1 EP 3356048A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- flange
- disc
- drive shaft
- retaining
- 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
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000003466 welding Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000013011 mating Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 210000003746 feather Anatomy 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
- B02C13/04—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters hinged to the rotor; Hammer 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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
- B02C13/16—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters hinged to the rotor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
- B02C2013/2808—Shape or construction of beater elements the beater elements are attached to disks mounted on a shaft
Definitions
- the invention relates to a rotor for a device for comminuting feed material, comprising a drive shaft, a plurality of rotor disks seated on the drive shaft and comminution tools arranged in the region of the outer circumference of the rotor disks;
- the invention further relates to a device for comminuting feed material.
- Rotors are used in devices for comminuting feedstock for coarse or fine comminution or disagglomeration of the feedstock by impact, shear or impact forces.
- comminution tools such as knives, hammers or blow bars.
- the most radially supplied to the rotating rotor feed material is detected and crushed by the crushing tools of the rotor, often in conjunction with statically arranged in the housing of the device elements such as baffles (stator).
- Impact hammer mills for example, are used in the course of cement production for processing (comminution and simultaneous drying) of the raw meal.
- ie pivotally arranged on axle rods hammers are provided as crushing tools in the frequent case, which align with rotation under centrifugal force and Schlaglich Gert impact forces on particles of the feed material.
- Embodiments of impact hammer mills are taught, for example, in the publications DE 24 1 6 499 C3 and DE 10 2006 033 300 A1.
- the torque transmission from the driven shaft to the comminution tools which is relevant for the comminution devices supported on the rotor principle, takes place via the rotor disks.
- this shaft-hub connection is realized by a feather key connection, that is, a torque transmission by means of a key inserted in a groove, as taught, for example, in the document DE 39 38 725 A1.
- a feather key connection that is, a torque transmission by means of a key inserted in a groove.
- the object of the invention is therefore to provide a rotor for a device for comminuting feed material, in which the risk of a rupture of the rotor disks and a lateral wander of the rotor disks is reduced.
- the object of the invention is achieved by a rotor for a device for comminuting feed material with the features of claim 1. Further advantageous embodiments are specified in the subclaims to claim 1 and a corresponding apparatus for comminuting feed material in claim 8.
- At least one retaining flange for connecting the rotor disk to the drive shaft is provided in the rotor for each rotor disk, wherein the at least one retaining flange is inseparably connected to the drive shaft and is detachably connected to the rotor disk.
- the retaining flanges are permanently connected by welding with the shaft.
- each rotor disk of the rotor is detachably connected to at least one retaining flange.
- This connection takes place the transmission of torque from the drive shaft to the rotor disk.
- the solubility of the compound in this case allows a rapid, separate replacement of individual rotor discs, which are exposed to heavy wear during operation, in particular due to the multiple impact of particles of the feed.
- each individual rotor disc is protected against lateral migration.
- the person skilled in the art will choose the strength of the connection according to the forces and torques occurring during typical operation of the rotor in the comminution device.
- the rotor disks are connected to the respective retaining flanges by screw connection. This can be done by means of screws by a direct screwing the rotor disk to the at least one retaining flange.
- a more preferable, in particular against shear forces more stable and easier to install compound is produced by the use of one or more connecting parts designed as discs, brackets, plates or the like elements laterally overlap the shaft-hub connection of rotor disc and retaining flange and respectively are bolted to the retaining flange and the rotor disk. Retaining flanges and rotor discs are then connected to each other sufficiently firmly, but releasably connected in an indirect manner.
- each disc with at least one retaining flange for example, realized by screw, no loose-fitting rotor discs are present in the rotor. Due to the fixed, backlash-free connection between the rotor disk and the retaining flange acting as part of the shaft, the risk of deflecting rotor disks from their intended equilibrium position, that is to say knocking out the rotor disks, is largely prevented. Due to the typically impacting load of the rotor in impact hammer mills, this is of great advantage for this type of comminution device.
- the retaining flanges are formed annularly around the shaft and each rotor disk is held by exactly one retaining flange.
- the rotor disk has for the connection to Holding flange on a circular hub bore.
- each rotor disk thereby has a radial inner side, that is to say an inner boundary surface lying toward the shaft-in the geometrically idealized case of a circular ring cylinder-the inner lateral surface. It is envisaged that in this shaft-hub system, the rotor disk rests with its radial inner side or surface on the radial outer side or surface of the associated retaining flange.
- shaft (retaining flange) and hub (rotor disk) can be a clearance clearance with little play in the case of crushing devices in which only small forces and torques occur during operation.
- backlash-free connections in the form of transition fits are to be preferred for the sake of avoiding rupture of the rotor disks. Only in exceptional cases of particularly great forces and moments will an over-fitting be realized; whose press fit in particular has the disadvantage of an expensive assembly / disassembly of the rotor disks.
- connection element The actual non-positive connection between the rotor discs and the corresponding respective retaining flanges is made in this embodiment of the invention by a screw, are firmly bolted to the rotor disc and retaining flange each with one and the same connection element.
- This may in particular be a laterally arranged plate which covers both the rotor disk and the associated retaining flange in the area of the mating surfaces lying one on top of the other.
- a connecting plate in the form of a concentric with the rotor disk arranged annular disk on one side of the rotor disk, wherein the plate for reasons of ease of assembly consists of several separate parts, for example, consists of two Halb Vietnameseringusionn. It is obvious, on the other side of disc or flange to further secure the screw analog to use another multi-piece connection plate and tighten nuts.
- each retaining flange distributed over its outer circumference recesses (flange recesses), which are similar to tuning forks or gears radially outward and open to the side surfaces. Between each two adjacent recesses remain in the outer peripheral region of the retaining flange web-like parts of the retaining flange, referred to as flange webs.
- the rotor disk associated with the respective retaining flange has recesses (disk recesses) and disk webs distributed over its inner circumference.
- flange recesses and -Stege correspond with the disc recesses and -Stegen, so that in the assembled rotor, ie in the operating state, the radial outer sides of the flange webs and the radial (inward toward the shaft) sides of the corresponding discs -Stege lie as centers with the already described fit each other. Accordingly, the recesses of rotor disk and retaining flange adjoin one another and form common recesses.
- the rotor disks and retaining flanges are each of the same type, so that they coincide in shape and size, ie each congruent to each other.
- both the flange recesses are congruent to each other, as well as the disc recesses to each other.
- the flange recesses thus also the disk recesses and the flange and disk webs, evenly distributed on the circumference of each retaining flange or each rotor disk. With regard to this distribution there is therefore rotational symmetry or radial symmetry.
- the recesses are offset from each other by an angle of 60 ° with respect to a rotation about the axis of rotation of the shaft.
- the flange recesses are only slightly larger in their (all dimensions) areal extent along the outer radial circumference are given as the along the outer periphery given (areal) expansion of a flange web.
- the longitudinal extent of the recesses of the flanges or discs (based on the minimum dimension) to approx. 0.5% to a maximum of 10% larger than the extension of the bars (based on their maximum dimension).
- the rotor according to the invention is suitable for all kinds of feedstock chopping machines whose crushing operation is based on the rotation of a rotor-milled rotor, often in cooperation with a stator provided correspondingly in or as the casing of the apparatus.
- the invention also includes devices for comminuting feed material which has a rotor according to the invention in one of the described embodiments.
- an advantageous embodiment of the invention provides that the comminution tools are in the form of hammers.
- the hammers are pivotally arranged on axle rods which, usually parallel to the drive shaft, pierce the rotor disks.
- An important embodiment of the device for comminuting feed material which comprises a rotor according to the invention, provides that the comminution tools of the rotor are known as hammers, blow bars or the like
- the rotor is assigned a impact hammer mill stator.
- the rotor according to the invention is therefore part of a baffle Hammer mill whose shredding unit in addition to the rotor also includes a typical for impact hammer mill stator.
- the stator in an additional impact chamber fixedly arranged baffle elements such as impact bars, to which the detected by the hammers of the rotor feed particles are thrown and thereby (pre-) crushed.
- FIG. 1 shows a rotor according to the invention for a device for comminuting feed material
- FIG. 5 shows a cross section through a rotor disk in the mounting position to the retaining flange
- Fig. 6 shows a cross section through a rotor disk in the mounted position to
- FIG. 1 shows a rotor 1 according to the invention for a device for comminuting feed material, for example for an impact hammer mill used in cement production. Not shown are the shredding tools. However, axial holes 3 arranged in the outer region of the rotor disks 2, which are provided for axle rods, on which pivotable comminution tools, in particular hammers, are arranged in the region between the rotor disks 2, can be seen. Upon rotation of the rotor 1, the hammers pivot following the centrifugal force in a radially outward position in which they protrude beyond the outer edge of the disc and act on particles of the feed material by crushing.
- the rotor disks 2 are arranged on a drive shaft 4. Each rotor disk 2 is arranged on an annular retaining flange 5.
- Figure 3 shows a schematic representation of the retaining flanges 5 on the drive shaft 4.
- FIG. 2 in particular, the fixed but detachable connection of the rotor disks 2 with the associated holding flanges 5 can be seen in a longitudinal section through the rotor 1 from FIG. 1 containing the axis of rotation of the drive shaft 4.
- a connecting element 6 designed as a connecting plate is arranged on each side. Both rotor disk 2 and the associated retaining flange 5 are screwed by means of screws 7 and nuts 8 to the connecting elements 6.
- a backlash-free connection is produced between the rotor disk 2 and the retaining flange 5, via which the forces and torques are transmitted and during operation of the rotor 1 no beating of the rotor disks 2 and no lateral migration of the rotor disks 2 along the drive shaft 4th can occur.
- the connecting elements 6 are given in the illustrated embodiment as circular ring disks, which are designed in two parts for easy assembly.
- Figure 4 shows a connected via a retaining flange 5 with the drive shaft 4 rotor disk 2 in cross-sectional view.
- Arrangements according to the invention for problem-free mounting of the rotor disks 2 in this operating position are shown in the figures 5 and 6, which are limited to the inner area, with the respective enlargement of the areas X and Y.
- the retaining flange 5 has in this case along its outer circumference evenly distributed flange recesses 9 and flange webs 10 between each two adjacent flange Recesses 9 on.
- the rotor disk 2 also has correspondingly uniformly distributed disk recesses 11 and disk webs 12 along its inner circumference.
- the recesses 9, 1 1 are slightly larger in terms of their extent along the circumference than the webs 10, 12, so that in the position of rotor disk 2 and retaining flange 5 to each other, as shown in Figure 5, a clearance fit is given.
- FIG. 5 shows the rotated relative to the rotation angle about the axis of rotation of the shaft 4 position of the rotor disc 2 to the retaining flange 5.
- FIG. 6 shows the position of rotor disks 2 and retaining flanges 5 in the fully assembled state, ie in the operating state.
- This is achieved by the rotor disk 2 from the mounting position ( Figure 5) is rotated so far that the flange webs 10, the corresponding disk webs 12 and thus the flange recesses 9 are the corresponding disk recesses 1 1 opposite. In the illustrated embodiment with 6 recesses (and 6 webs) this corresponds to a rotation through an angle of 30 °.
- the top surfaces of the disk webs 12 and flange webs 10 lie on one another as mating surfaces or centering surfaces (FIG. 6), with a play-free fit.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015012588.5A DE102015012588B4 (de) | 2015-09-29 | 2015-09-29 | Rotor für eine Zerkleinerungsvorrichtung |
PCT/EP2016/073140 WO2017055365A1 (de) | 2015-09-29 | 2016-09-28 | Rotor für eine zerkleinerungsvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3356048A1 true EP3356048A1 (de) | 2018-08-08 |
EP3356048B1 EP3356048B1 (de) | 2019-07-24 |
Family
ID=57003525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16770965.8A Active EP3356048B1 (de) | 2015-09-29 | 2016-09-28 | Rotor für eine zerkleinerungsvorrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US10786815B2 (de) |
EP (1) | EP3356048B1 (de) |
CN (1) | CN108025311B (de) |
DE (1) | DE102015012588B4 (de) |
RU (1) | RU2705267C1 (de) |
WO (1) | WO2017055365A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2718191C1 (ru) * | 2019-08-16 | 2020-03-31 | Владимир Петрович Папулов | Механизм управления сцепной муфтой |
CN112916131A (zh) * | 2019-12-07 | 2021-06-08 | 况永刚 | 升级粉碎机 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB159925A (en) * | 1919-11-07 | 1921-03-07 | Frederick Seymour | Improved process and apparatus for pulverizing or fine grinding |
GB336776A (en) * | 1928-11-15 | 1930-10-23 | Paul Arthur Hirsch | Improved pulverizing machine |
US3235189A (en) * | 1963-10-15 | 1966-02-15 | Riley Stoker Corp | Pulverizer |
US3533565A (en) * | 1968-09-19 | 1970-10-13 | Reuben A Weiner | Hammermill with side-by-side rotating hammer systems |
DE2145868C3 (de) * | 1971-09-14 | 1979-01-04 | Hazemag Dr. E. Andreas Gmbh & Co, 4400 Muenster | Rotor für von heißen Trocknungsgasen durchströmte Prallmühlen |
US3724767A (en) * | 1971-10-07 | 1973-04-03 | Piqua Eng Inc | Shredder-grinder machine having an improved rotor |
DE2416499C3 (de) | 1974-04-04 | 1980-06-26 | Emil Dipl.-Ing. 5232 Bettgenhausen Polus | Prallhammermuhle |
DE3938725A1 (de) * | 1989-11-23 | 1991-05-29 | Lindemann Maschfab Gmbh | Rotor fuer eine zerkleinerungsmaschine und schutzkappen fuer den rotor |
SU1772321A1 (ru) * | 1990-06-27 | 1992-10-30 | Kemer T I Pishchevoj Promy | Potop moлotkoboй дpoбилkи |
US5154363A (en) * | 1990-08-31 | 1992-10-13 | Eddy William A | Reciprocating action miller |
CN2299657Y (zh) * | 1997-06-16 | 1998-12-09 | 张进明 | 盘座组合迫碎式针筒粉碎机 |
DE19848866A1 (de) * | 1998-10-23 | 2000-04-27 | Krupp Foerdertechnik Gmbh | Hammerbrecher |
DE10219482B4 (de) * | 2002-04-30 | 2004-05-27 | Netzsch-Feinmahltechnik Gmbh | Rührwerksmühle |
CA2557640C (en) * | 2004-02-19 | 2012-04-24 | Ernst Grob Ag | Tooth profile of a spline shaft |
DE102006033300B4 (de) | 2006-07-17 | 2017-08-31 | Ejk Engineering Gmbh | Prallhammermühle |
DE102008013232A1 (de) | 2008-03-07 | 2009-09-17 | Pallmann Maschinenfabrik Gmbh & Co Kg | Vorrichtung zum Zerkleinern von Aufgabegut mit einem Rotor |
EP2471600B1 (de) * | 2011-07-22 | 2013-07-03 | HAZEMAG & EPR GmbH | Rotor eines Hammerbrechers |
EP2922635A4 (de) * | 2012-11-07 | 2016-09-14 | Heritage Hd Llc | Vertikalwellenimpaktor |
-
2015
- 2015-09-29 DE DE102015012588.5A patent/DE102015012588B4/de not_active Expired - Fee Related
-
2016
- 2016-09-28 CN CN201680056386.5A patent/CN108025311B/zh active Active
- 2016-09-28 US US15/763,640 patent/US10786815B2/en active Active
- 2016-09-28 RU RU2018109472A patent/RU2705267C1/ru active
- 2016-09-28 WO PCT/EP2016/073140 patent/WO2017055365A1/de active Application Filing
- 2016-09-28 EP EP16770965.8A patent/EP3356048B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
CN108025311B (zh) | 2020-07-03 |
RU2705267C1 (ru) | 2019-11-06 |
EP3356048B1 (de) | 2019-07-24 |
DE102015012588B4 (de) | 2017-12-28 |
WO2017055365A1 (de) | 2017-04-06 |
US10786815B2 (en) | 2020-09-29 |
DE102015012588A1 (de) | 2017-03-30 |
US20180280985A1 (en) | 2018-10-04 |
CN108025311A (zh) | 2018-05-11 |
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