EP2253380A1 - Dispositif de broyage de matériaux de chargement - Google Patents

Dispositif de broyage de matériaux de chargement Download PDF

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Publication number
EP2253380A1
EP2253380A1 EP10004830A EP10004830A EP2253380A1 EP 2253380 A1 EP2253380 A1 EP 2253380A1 EP 10004830 A EP10004830 A EP 10004830A EP 10004830 A EP10004830 A EP 10004830A EP 2253380 A1 EP2253380 A1 EP 2253380A1
Authority
EP
European Patent Office
Prior art keywords
rotor
stator
crushing
tools
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.)
Withdrawn
Application number
EP10004830A
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German (de)
English (en)
Inventor
Hartmut Pallmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pallmann Maschinenfabrik GmbH and Co KG
Original Assignee
Pallmann Maschinenfabrik GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pallmann Maschinenfabrik GmbH and Co KG filed Critical Pallmann Maschinenfabrik GmbH and Co KG
Publication of EP2253380A1 publication Critical patent/EP2253380A1/fr
Withdrawn legal-status Critical Current

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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
    • B02C13/22—Disintegrating by mills having rotary beater elements ; Hammer mills with intermeshing pins ; Pin Disk 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
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements

Definitions

  • the invention relates to a device for comminuting feed material according to the preamble of patent claim 1.
  • Crushing devices of this type are used primarily for impact or impact crushing of feed material, with comminution down to the finest grinding possible.
  • generic devices are used in the food industry for the fine grinding of fat-containing fruits such as cocoa or coffee or it fruit beaten to produce fruit pulp and homogenized.
  • generic devices are used, for example, for the production of pigments or for grinding polymers.
  • the comminution of soft-elastic materials such as rubber or scrap tire granules is possible, usually in conjunction with the supply of cooling energy before the grinding process, for example by the supply of liquid nitrogen in order to embrittle the feedstock.
  • pin mills with within a housing coaxial and spaced apart disks, one of which rotates or both rotate at differential speed.
  • the discs have on the facing disc surfaces grinding pins, which overlap in the clear space between the discs in the axial direction.
  • the grinding pins of each disc sitting on concentric to the axis of rotation extending circumferential circles, wherein the radii of the circumferential circles of a disc differ from those of the other disc to allow in the course of rotation, a combing of the opposing grinding pins.
  • the feed material is supplied to such pin mills axially through a centric opening in one of the disks and deflected by impact on the other disk in the radial direction, so that it flows through the comminution zone formed by the grinding studs radially and after its exit from the grinding gap formed by the discs the device is removed.
  • Such a machine is for example in the DE 27 13 809 described.
  • Characteristic of the known from the prior art pin mills is their annular disk-shaped crushing zone, which extends in a radial plane to the rotation axis, that has two-dimensional shape.
  • the crushing zone is thus flowed through radially, wherein the good particles are driven both by the drag force of the carrier gas stream as well as due to the centrifugal forces induced by the centrifugal forces radially outward. Therefore, the regrind passes through the comminution zone relatively quickly, so that the contact time available for the grinding of the feed material is relatively short.
  • This type of construction also entails that only the opposite disc surfaces are available for the grinding pins necessary for comminution, which considerably limits the maximum number of grinding pins.
  • the play space for the grinding pin arrangement is additionally restricted because of the grinding pins of the opposite disc.
  • the density of the grinding pins is not particularly high in known mills and thus limits the performance of such pin mills.
  • the grinding pins are arranged on different circumferential circles with respect to the axis of rotation, the milling pins arranged on the outer circumferential circles rotate at a higher peripheral speed than the ones lying further inwards.
  • the grinding pins strike the material to be ground with different energy, with the risk that the finished product will have a greater degree of scattering in the degree of fineness.
  • the present invention seeks to provide a pin mill, which allows a more intense and high-quality processing of the feed material compared to the prior art.
  • a further object of the invention is to minimize the downtime of a device by changing the grinding pins as simply and quickly as possible.
  • the invention is detached from the omnipresent idea of a two-dimensional comminution zone in pin mills and for the first time envisages the three-dimensional forming of the comminution zone.
  • This is done according to the invention by a cylindrical or cone-shaped rotor, which is equipped over its circumference with first pin-shaped crushing tools.
  • a high pin density within the crushing zone can be achieved with only a small increase in the housing. It can therefore be achieved disproportionately higher performance with relatively small machines.
  • the rotor design according to the invention leads to an annular gap between the rotor and the housing, which is flowed through substantially axially by the feed material. Occurring centrifugal forces within the crushing zone therefore have no appreciable influence on the flow velocity of the feed material and thus also not on its residence time. As a result, the feed can be kept longer in devices according to the invention, with the advantage of a particularly intensive processing.
  • the arrangement of the crushing tools on a cylindrical or conical rotor further has the advantage that all crushing tools have substantially the same peripheral speed, which is reflected in a uniform processing of the feedstock and a uniform, in terms of shape and size within close tolerances and therefore qualitatively very high quality end product leads.
  • the crushing work can be accomplished in a device according to the invention solely by the rotor.
  • a stator which is likewise equipped with second pin-shaped comminution tools similar or identical to those of the rotor, which interact with one another in combing interaction. In this way, a very intensive comminution takes place, which is particularly suitable for fine and Feinstmahlung.
  • the arrangement of the comminution tools on the rotor or stator is not arbitrary, but an arrangement is preferred in which the comminution tools are arranged in a plurality of axially spaced radial planes at a uniform circumferential distance. This results in uniform conditions that contribute to a quiet machine run.
  • To adapt to the feed material and the type of comminution there is the possibility of arranging the comminution tools on the rotor and / or stator of different radial planes in alignment on a generating line or with a circumferential offset from the radial plane to the radial plane.
  • the rotor is substantially monolithic, that is, it has a monolithic, ie one-piece body in which, for example, the crushing tools are used directly.
  • a body is very easy to manufacture, since no parts need to be assembled.
  • it is characterized by a high concentricity and high precision. The change of all shredding tools happens at once by the replacement of the entire rotor.
  • a particularly preferred embodiment of the invention provides for equipping the rotor and / or stator with a jacket on which the comminution tools are respectively arranged. This has the advantage that the renewal of the crushing tools can be done outside the device, ie during operation, whereby by keeping an additional rotor and / or stator shell, which is already equipped with fresh cutting tools, the change times on the removal and installation of the Restrict mantels.
  • a type of attachment is preferred in which the crushing tools only by inserting from the inside of the rotor and / or stator shell takes place in through openings.
  • a first fixation of the comminution tools in the rotor and / or stator shell is achieved.
  • the final anchoring takes place with the merging of base body and rotor shell or upper part and stator shell, wherein the main body forms with its outer circumference and the upper part with its inner circumference an abutment surface for the crushing tools.
  • the crushing tools are thus clamped in this way between the base body and rotor shell or upper part and stator shell.
  • a radially inwardly directed annular flange is formed on the upper edge of the shell, which rests on the end face of the main body of the rotor and is clamped to its clamping attachment by means of a plate against the base body.
  • the stator jacket is also fixed by a clamping attachment in the course of placement of the upper housing part on the lower part or by providing a clamping ring on the larger diameter end face of the upper part.
  • a baffle plate on the front side of the rotor is provided opposite the concentric to the axis of rotation into the housing Gutseinlasses, which can be provided over its circumference with several blow bars and pre-crushed the larger pieces of the feedstock.
  • the baffle plate simultaneously assumes the function of fixing the rotor shell on the base body.
  • a housing 1 which is composed of a cylindrical lower part 2 and a bell-shaped upper part 3.
  • the longitudinal axis of the housing 1 is provided with the reference numeral 4.
  • the lower part 2 is closed at the bottom by a bottom 5, in which centric to the axis 4, a circular opening 6 is arranged.
  • the opening 6 serves to receive a substantially cylindrical shaft bearing 7, which is screwed coaxially to the axis 4 by means of a flange on the bottom 5.
  • the upper end of the shaft bearing 7 extends into the region of the upper part 3.
  • annular channel 8 which opens via a tangential to the axis 4 extending material outlet 9 from the housing 1.
  • the upper end of the lower part 2 forms a circumferential annular flange 10, on which a bearing ring 11 of angular cross-section is fastened.
  • the outer shape of the upper part 3 is bell-shaped, while the inner circumference of the upper part 3 has a conical shape and serves to receive a stator.
  • the top of the upper part 3 is closed by a detachable cover 12, which has a central opening in the region of the axis 4, to which an inlet connection 13 for feeding the device with feed material connects coaxially.
  • the foot region of the upper part 3 is formed with its outer circumference complementary to the inner circumference of the bearing ring 11, so that the upper part 3 with its foot region axially in the lower part 2 can be inserted.
  • a plane-parallel and coaxial extending annular flange 14 on the outer circumference which is fastened by means of screws 15 on the lower part 2.
  • the coaxial with the axis 4 aligned drive shaft 17 is rotatably supported in bearing groups 16.
  • the lower, lying outside of the housing 1 end of the drive shaft 17 is connected to a rotary drive, not shown.
  • the opposite, lying in the interior of the housing 1 end extends far into the region of the upper part 3 and serves for the rotationally fixed receiving a rotor 18, whose more detailed structure with additional reference to the Fig. 3 to 5 is explained in more detail.
  • the rotor 18 has a multi-membered structure and comprises a monolithic base body 19 in the form of a truncated cone, which sits non-rotatably on the drive shaft 17.
  • the outer circumference 20 of the base body 19 is positively enclosed by a rotor shell 21, whose more accurate training mainly from Fig. 5 is apparent.
  • the rotor shell 21 consists of a hollow truncated cone-shaped part 22, which is pushed axially onto the base body 19 and from a in a radial plane to the axis 4 inwardly extending annular flange 23, which is integrally formed on the upper, smaller diameter inner periphery of the hollow frustoconical member 22.
  • the underside of the annular flange 23 comes to lie in a complementary shaped annular recess in the upper end face 24 of the rotor 18.
  • the annular flange 23 thus serves as a stop and bearing surface for the positionally accurate axial and radial seat of the rotor shell 21 on the base body 19th
  • the rotor shell 21 is penetrated by a plurality of bores 25, which are grouped in axially spaced radial planes 26, wherein the bores 25 of each radial plane 26 are arranged in a uniform circumferential distance.
  • the bores 25 of adjacent radial planes 26 are each located on common generatrices, one of which is shown as representative and denoted by 27.
  • the holes 25 of two adjacent radial planes 26 are arranged with a circumferential offset from each other, for example, at half the circumferential distance of two holes 25.
  • the holes 25 are used to accurately fit the first pin-shaped crushing tools 28th
  • the first crushing tools 28 each consist of a solid cylindrical bolt, for example of steel or ceramic with a diameter between, for example, 5 mm to 10 mm, which has a disc-shaped head widening 29 at one end ( Fig. 3 and 6 ). Like from the Fig. 3 and 6 it can be seen such crushers 28 are inserted from the interior of the rotor shell 21 through the holes 25 through, wherein the widened head 29 comes to lie in a complementary recess on the inner circumference of the rotor shell 21 to end in this way flush with the inner circumference of the rotor shell 21 can. There, the base body 19 presses with its outer circumference against the rotor shell 21 and the heads 29 and thus forms an abutment for fixing the crushing tools 28 in their operating position.
  • FIG. 4 A fully equipped with crushing tools 28 rotor 18 is clearly in Fig. 4 shown. There one also sees that the comminution tools 28 protrude perpendicularly from the peripheral surface of the rotor shell 21, resulting in conical rotors 18 that the crushing tools 21 are not aligned in the radial direction, but with the radial planes 26 include an angle, the taper of the rotor 18 corresponds.
  • the front side 24 of the rotor 18 is covered by a coaxial with the axis 4 arranged baffle plate 30 and extends with its outer edge to the outer periphery of the rotor shell 21.
  • the baffle plate 30 radially overlaps the annular flange 23, the upper side in turn in a complementarily shaped recess the bottom of the baffle plate 30 comes to rest.
  • the annular flange 23 is positively embedded between the base body 19 and baffle plate 30.
  • the baffle plate 39 thus biases the annular flange 23 and thus the rotor shell 21 against the base body 19, which is done by means of the indicated with 31 screws extending through the baffle plate 30 and the annular flange 23 into the base body 19 inside.
  • baffle plate 30 At the top of the baffle plate 30 six rectangular beater bars 32 are fixed in the region of the outer circumference, which are diametrically opposite in pairs with radial orientation.
  • a disc-shaped chamber 22 is formed, in which a pre-crushing of the feed takes place.
  • Fig. 1, 2 and 6 further show a rotor 18 coaxially surrounding stator with a hollow truncated cone-shaped stator shell 33, the form-fitting along the
  • the upper edge of the stator jacket 33 has an annular projection 37 for centering and toothing with the upper part 3.
  • the lower edge is bordered by a clamping ring 34 which is screwed to the upper part 3.
  • the inner circumference of the stator jacket 33 extends at a uniform radial distance from the outer circumference of the rotor 18, resulting in an annular gap 35 which forms the comminution zone into which the first comminuting tools 28 extend.
  • the stator shell 33 is also penetrated by a multiplicity of bores which serve to receive second pin-shaped comminution tools 36, which correspond in their type to the first comminution tools 28.
  • the bores or the second comminution tools 36 are each arranged in axially spaced radial planes, the relative position of the radial planes of the stator shell 33 with respect to the radial planes 26 of the rotor shell 21 being such that an axial offset results in a meshing arrangement of the first comminution tools 28 and second Crushing tools 36 results.
  • the type of attachment of the second crushing tools 36 in the stator shell 33 corresponds to that realized in the rotor shell 21, so that what is said there applies accordingly.
  • the comminution tools 36 have a widened head, which lies in a positive depression and ends flush with the outer circumference of the stator jacket 33.
  • the upper part 3 presses from behind against the peripheral surface of the upper part 3 and the ends of the crushing tools 36 and holds them in this way in the wells.
  • a device operates as follows.
  • the feed material passes via the inlet connection 13 axially into the chamber 22, where a first impact of the feed material takes place on the baffle plate 30.
  • the feedstock is deflected in the radial direction and centrifugally driven radially outward where it is detected in the outer peripheral region of the baffle plate 30 of the rotating blow bars 32 and pre-crushed.
  • the pre-shredded feed material is deflected in an axial direction, wherein it enters the annular gap 35 and there between the rotating first crushing tools 28 and second, fixed crushing tools 36 further digested and crushed.
  • the sufficiently processed feed leaves the annular gap 35 axially downwards and enters the annular channel 8, from where it passes via the material outlet 9 from the housing 1.
  • the rotor shell 21 can be pulled off axially from the base body 19 of the rotor 8 and replaced by a rotor shell 21 equipped with new comminution tools 28.
  • the change of the stator jacket 33 which can be removed axially from the upper part 3 after releasing the clamping ring 34, is similarly simple and fast.
  • the replacement of the comminution tools 28 on the rotor shell 21 and the comminution tools 36 on the stator shell 33 is done by pushing out the comminution tools from the corresponding holes and inserting new comminution tools 28, 36, to their broadened head in the complementarily shaped depressions in the rotor shell 21 and stator shell 33 lie comes.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
EP10004830A 2009-05-11 2010-05-07 Dispositif de broyage de matériaux de chargement Withdrawn EP2253380A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009020708A DE102009020708A1 (de) 2009-05-11 2009-05-11 Vorrichtung zum Zerkleinern von Aufgabegut

Publications (1)

Publication Number Publication Date
EP2253380A1 true EP2253380A1 (fr) 2010-11-24

Family

ID=42751878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10004830A Withdrawn EP2253380A1 (fr) 2009-05-11 2010-05-07 Dispositif de broyage de matériaux de chargement

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US (1) US8282030B2 (fr)
EP (1) EP2253380A1 (fr)
DE (1) DE102009020708A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9339148B2 (en) 2010-08-31 2016-05-17 Healthy Foods, Llc Supply assembly for a food homogenizer
US9282853B2 (en) 2010-08-31 2016-03-15 Healthy Foods, Llc Food homogenizer
US8550390B2 (en) 2010-08-31 2013-10-08 Healthy Foods, Llc Food based homogenizer
US9332881B2 (en) 2014-01-17 2016-05-10 Capbran Holdings, Llc Food mixer
MY190268A (en) * 2015-03-30 2022-04-11 Yoonsteel M Sdn Bhd Replacement cone crusher wear liners
MX2017013319A (es) * 2015-04-17 2018-08-15 Buehler Ag Dispositivo y metodo para mezclado, en particular dispersion.
RU2665100C1 (ru) * 2017-10-23 2018-08-28 федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный технологический университет им. В.Г. Шухова" Центробежный дисковый измельчитель

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191501331A (en) * 1915-01-27 1915-10-07 Jacob William Spensley Improvements relating to Rotary Disintegrating, Pulverising or Mixing Apparatus.
DE2713809A1 (de) 1977-03-29 1978-10-05 Messer Griesheim Gmbh Verfahren und vorrichtung zum kaltmahlen von gummigranulat in einer stiftmuehle
US5094391A (en) * 1989-10-20 1992-03-10 Onoda Cement Co., Ltd. Pneumatic classifier
WO2000047325A1 (fr) * 1999-02-10 2000-08-17 Leschonski K Broyeur carr
DE20211899U1 (de) * 2002-08-01 2002-09-19 CEMAG Anlagenbau GmbH, 31789 Hameln Wirbelstrommühle sowie Rotor und Mahlwerkzeug dafür

Family Cites Families (13)

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US407751A (en) * 1889-07-23 Charles f
US1451424A (en) * 1921-09-03 1923-04-10 Joseph Baker Sons & Perkins Means for grinding or pulverizing food or other substances of a similar nature
US1869243A (en) * 1931-03-09 1932-07-26 Fraser William Groundwater Pulping machine
US2039264A (en) * 1933-08-15 1936-04-28 Jeffrey Mfg Co Apparatus for breaking down material
US3028105A (en) * 1960-04-08 1962-04-03 Stedman Foundry And Machine Co Multiple cage disintegrator
US3815835A (en) * 1972-04-18 1974-06-11 Banyaszati Kutato Intezet Disaggregation apparatus for producing fine dispersions
US4399948A (en) * 1979-10-09 1983-08-23 Peter Treffner Pulverizer
DE19714075A1 (de) * 1997-04-04 1998-10-08 Hosokawa Mikropul Ges Fuer Mah Mahlanlage
DE19962049C2 (de) * 1999-12-22 2003-02-27 Babcock Bsh Gmbh Wirbelstrommühle
US7048214B2 (en) * 2002-08-23 2006-05-23 Louis Wein Johnson Gyratory crusher with hydrostatic bearings
DE102006017552A1 (de) * 2006-04-13 2007-10-25 Aufbereitungstechnologie Noll Gmbh Vorrichtung zum Mischen, Mahlen, Trocknen und Coatieren von unterschiedlichsten Stoffen im Feinheitsbereich von 500µm und darunter, nämlich Prallmühle
US7451944B2 (en) * 2006-06-23 2008-11-18 Hall David R Replaceable segmented wear liner
US7861958B2 (en) * 2007-04-05 2011-01-04 Lehigh Technologies, Inc. Conical-shaped impact mill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191501331A (en) * 1915-01-27 1915-10-07 Jacob William Spensley Improvements relating to Rotary Disintegrating, Pulverising or Mixing Apparatus.
DE2713809A1 (de) 1977-03-29 1978-10-05 Messer Griesheim Gmbh Verfahren und vorrichtung zum kaltmahlen von gummigranulat in einer stiftmuehle
US5094391A (en) * 1989-10-20 1992-03-10 Onoda Cement Co., Ltd. Pneumatic classifier
WO2000047325A1 (fr) * 1999-02-10 2000-08-17 Leschonski K Broyeur carr
DE20211899U1 (de) * 2002-08-01 2002-09-19 CEMAG Anlagenbau GmbH, 31789 Hameln Wirbelstrommühle sowie Rotor und Mahlwerkzeug dafür

Also Published As

Publication number Publication date
DE102009020708A1 (de) 2010-11-18
US8282030B2 (en) 2012-10-09
US20100282886A1 (en) 2010-11-11

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