EP0122402A2 - Concasseur de grains - Google Patents

Concasseur de grains Download PDF

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Publication number
EP0122402A2
EP0122402A2 EP84101744A EP84101744A EP0122402A2 EP 0122402 A2 EP0122402 A2 EP 0122402A2 EP 84101744 A EP84101744 A EP 84101744A EP 84101744 A EP84101744 A EP 84101744A EP 0122402 A2 EP0122402 A2 EP 0122402A2
Authority
EP
European Patent Office
Prior art keywords
grinding
air
gap
recess
grist
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Withdrawn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
EP84101744A
Other languages
German (de)
English (en)
Other versions
EP0122402A3 (fr
Inventor
Heinrich Gerk
Alfred Gerk
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0122402A2 publication Critical patent/EP0122402A2/fr
Publication of EP0122402A3 publication Critical patent/EP0122402A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • B02C7/12—Shape or construction of discs
    • B02C7/13—Shape or construction of discs for grain 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
    • B02C7/11—Details
    • B02C7/14—Adjusting, applying pressure to, or controlling distance between, discs
    • 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
    • B02C7/18—Disc mills specially adapted for grain

Definitions

  • the invention relates to a grist mill with two end faces, coaxially and axially displaceable relative to one another for setting a grinding gap, at least one of which is driven and at least one carries an air groove or air groove group on the grinding side and is made from stone grains and binders.
  • the solution to the problem is that in at least one of the millstones from the grinding side axially in depth and at an angle to one another there are several air furrows, preferably air furrow groups, the air furrow width being selected in relation to their depth gradation so that at least one Air furrow group with progressive wear of the grindstone is on the respective grinding side, and the entire usable grindstone depth is interspersed with air furrows.
  • large-mesh mats made of glass fiber or metal wire are advantageously used in the remaining area stored below the wear area.
  • the axial bristles or wires can also be anchored to these, for example by looping, so that no pieces of wire can escape into the meal.
  • the grinding stones of the type mentioned can be used advantageously in mills with horizontal and vertical grinding gap. It is also possible for the air furrows and the axial bristles to be introduced alternately in each case only in one millstone.
  • the return of the coarse grist from the screening device can be done in a very simple manner by means of scrapers which circulate with the grinding stone and spend it in a radial, for example sector-shaped recess in the fixed grinding stone.
  • a further increase in performance and extension of the life of the grist mill can be achieved by connecting a crushing device in a known manner.
  • this is arranged centrally in the grinder and driven directly with the same axis.
  • a grist mill with a horizontal grinding gap 17 is shown.
  • the millstones 7, 8 are arranged coaxially in a cylindrical housing 4.
  • the lower millstone 7 is fastened on the axis la of the motor 1, which is flange-mounted centrally on the underside 3 of the housing 4, and is thus rotatably mounted.
  • the other grindstone 8 is mounted on the upper housing part with three spindles 13, which are arranged uniformly distributed around the central axis A and are seated with the spindle threads in threaded bushings on the grindstone 8, in an axially adjustable manner.
  • the three spindles 13 carry sprockets which are connected to one another by a chain 14 or a toothed belt, so that they can be adjusted synchronously by means of a handwheel 12, as a result of which the grinding stone 8 can be displaced exactly parallel in a simple manner and the grinding gap 17 exactly to a predetermined depth t1 can be set so that a high grinding performance, a given grinding degree is given and little stone wear occurs.
  • the grinding stones 7, 8 have so-called air furrows 15, 16, in which the ground material, which is introduced axially into the central recesses 79, and the grist is distributed over the grinding sides 17a or discharged to the outside.
  • the ground material is fed via a funnel 5 via a metering device, which consists of a gap t2 between the lower funnel edge and an input plate Io, which is fastened on the end face on the motor axis la, and a height adjustment device of the funnel 5, which carries a test adjusting handle 11, which one passes through oblique slot 9a of a bearing bush 9 of the funnel 5, fed to the recess 79.
  • a metering device which consists of a gap t2 between the lower funnel edge and an input plate Io, which is fastened on the end face on the motor axis la
  • a height adjustment device of the funnel 5 which carries a test adjusting handle 11, which one passes through oblique slot 9a of a bearing bush 9 of the funnel 5, fed to the recess 79.
  • An exchangeable sorting screen 44 is arranged in the outlet opening in the cylindrical surface of the housing 4.
  • Fig. 2 shows a section in the plane II-II. The details of the design of the millstones 7, 8 will be discussed later with reference to FIGS. 5 to 8.
  • FIG. 3 shows a grist mill with a vertical grinding gap 17.
  • the rotatable grinding stone 7 is fastened to the axis of the motor 1, and the grinding stone 8a held in the slot guide 48 in a rotationally fixed manner is axially displaceably supported by adjusting means.
  • adjusting means consist of a central spindle 50 with a handwheel 36 and a locking clamp 51, which engages in a central thread of the plug axis of the grinding stone 8a.
  • a relatively long guidance of the thru axle ensures an exact parallel guidance and exact adjustment of the depth t 1.
  • the ground material is introduced through a funnel 29 into the central recesses 79, 79 a of the grinding stones 7, 8 a, the amount being determined in each case by adjusting the gap t 2 a between the lower funnel edge and the hub of the rotating grinding stone 7, which is extended up to this.
  • the funnel 29 is guided through a radial recess 47 of the rotationally fixed grinding stone 8a, which is widened in a sector shape.
  • a supply air opening 45 and an exchangeable sorting sieve 44 are arranged in the casing 4 on the casing side, behind which the outlet connection 3o connects.
  • the scraper 41 runs at the edge of the coarse meal into the return opening 46 into the funnel 29 and partly also into the sector-shaped recess 47, where it runs on the inlet side 47a which runs obliquely downwards to the central recess 79a , runs back to the center together with the incompletely ground material coming in and from there is distributed again via the air furrows 16, 15e in the grinding gap.
  • Fig. 4 shows a section along the plane IV-IV, from which the position of the sorting screen 44 and the sector-shaped recess 47 and their size can be seen.
  • FIGS. 8 and 9 show sections in Play level VIII-VIII or along the air channels GI, GII, GIII.
  • the millstones 7, 8a are built on a plate 7b, on which the central fastening bush or thru axle is fastened with a flange or in which the bushes of the spindles 13 (FIG. 1) are seated, or fastened thereon.
  • a central, conical recess 79, 79a runs from the grinding side 17a through the entire usable, ie wearable, area of the grinding stones 7,8a.
  • the air groove groups G!, GH, GI! I with the air grooves 15, 15a, 15b and 16, 16a, 16b each offset by an angle w in several planes.
  • the levels are staggered according to the width or diameter of the air furrows in the usable millstone area to the depth t3, t4, t5, so that as wear progresses, at least one air furrow is always exposed and thus effective, as is the case in the direction of the furrow running cuts Fig. 9 can be seen.
  • the air furrows 15, 16, etc. run only up to the vicinity of the edge 8 0 , so that an edge zone of the width b remains, in which no furrows run, so that practically only finely ground shot from the Grinding gap 17 can emerge.
  • the entire surface of the grinding side 17a is used only to a limited extent, which means a certain limitation of the grinding capacity.
  • Fig. 3 an alternative advantageous embodiment is shown in which the air grooves 15c, 15d, 15e and the corresponding air grooves of the other grindstone are guided to the edge 8 0. This ensures full use of the grinding surface.
  • the coarse shot parts or the regrind that has not been gripped by the gap and emerges from the air furrows at the edge are, as described, returned to the central recess 79, 79a.
  • Sektoraus originallyung 47 which serves inter alia the recirculation has, as shown, an opening angle of about 6 ° 0.
  • An equivalent, radial or inclined recess 47 or 47b is shown in FIG. 2 for use with a horizontal grinding gap 17.
  • FIGS. 10 and 11 show axial and radial sections of grinding stones 7, 8, in the supporting area of which, which lies below the wearable area through which air grooves (not shown) pass, coarse-meshed mats 77a, 77b made of glass fiber, metal wire mesh, for example steel wire Reinforcement are stored.
  • the mesh size and the distance between the mats are expediently a multiple of the largest grain diameter of the grit of the grinding stone.
  • the mats are expediently used, for example, with a texture rotated by 45 ° relative to one another, so that attacking mass forces and compressive forces are absorbed and distributed evenly in all directions. This enables the stones to be operated at a very high grinding capacity and at high speed.
  • a statistically homogeneous distribution of the bristles 85 is shown in the lower half of the drawing, and in the other embodiment according to the upper half of the drawing, a brush-like compacted storage is carried out in the zones 86 between the air furrows 15 to 15b.
  • the bristles 85 extend into the load-bearing area so that as the grindstone wears down, no longer pieces of wire fall out and get into the shot. As shown in FIG. 13 below, the bristles expediently extend into the mat 77a of the reinforcement and are preferably connected to it by means of a loop.
  • the protruding bristle ends prevent the millstones from being placed close together, which prevents extreme wear. It is expedient and simplifies the production of a millstone set, air furrows and bristles to be arranged only on one of the millstones, preferably on opposite ones. It is preferred to introduce the air furrows in the non-rotatable grinding stone 8,8a and the bristles 85 and possibly reinforcement with mats 77a in the rotating grinding stone 7, since the latter hardly shows any imbalance with increasing wear and withstands high speeds.
  • Fig., 14 shows a grist mill with a vertical grinding gap 17 between the grinding stones 7, 8, of which the non-rotatable is axially adjustable via a 3-spindle drive, within which a screw conveyor 63 is arranged.
  • the outlet of the funnel 29 is axially angled and mounted so that there is a metering gap between its end and the distributor plate 10.
  • the shift can be made with an adjusting handle 11a, which can be fixed with a lock nut 11b.
  • FIG. 16 shows a further very simple variant of the central spindle 5o for shifting the plug-in axis of the rotationally fixed grinding stone 8a, in which the plug-in axis is pressed against the spindle 5o only by the grinding pressure and contains no thread. Furthermore, a funnel outlet 29a is shown, which is bent into the central recesses 79, so that the grinding stock is guided into the grinding gap 17 even with progressive wear of the grinding stones 7, 8a.
  • Fig. 17 shows a further arrangement of the adjusting means 36,5 0 , 51 for the central setting of the grinding gap, in which the plug axis of the grinding stone 8 is designed as a tube 81, in which the screw conveyor 63 and around it the displaceable metering device at the outlet of the funnel 29, adjustable with the handle 11, is mounted.
  • FIG. 18 A further addition to the adjusting means 12, 13, 14 is shown in FIG. 18.
  • a tube is axially attached to the rotationally fixed grinding stone 8 and is led out of the housing 4, which is designed as a gauge 7o on a scale; with which the position of the grindstone 8 is determined relative to the housing 4.
  • the housing 4 which is designed as a gauge 7o on a scale; with which the position of the grindstone 8 is determined relative to the housing 4.
  • a lock 67 by means of which the axial displacement of the grindstone 8 by the spindles 13 in the direction of the rotatable grindstone 7 is limited in accordance with the setting.
  • the stop 67 is supported in the end position on the housing 4 or a concentric tube 69 connected to it to limit the grinding gap 17.
  • FIG. 19 shows an advantageous embodiment of the grist mill, in which the power is additionally increased by a squeezing device 54, 60.
  • a crushing roller 6o is fastened in the central recesses 79, 79a, around which a bush 54 is arranged eccentrically, with a surface line almost touching it, in a rotationally fixed manner.
  • a pinch gap 55 is formed between the bush 54 and the crushing roller 6 0 , behind which an outlet opening for the crushed material is provided with a sieve insert 57.
  • the dosing device for the regrind is in the form of an adjustable slide 35 in front of the squeezing device.
  • the bushing 54 can also be fastened to the housing 4 in the rotationally fixed grinding stone 8a, in particular when the grinding stone is mounted on a 3-spindle. Height adjustment for specifying the pinch gap width can be provided in a known manner by means of a spindle, wedge or eccentric device.
  • Fig. 2o a section perpendicular to the axis in the plane XX-XX is shown by the squeezing device, which illustrates the eccentric gap and the grist and discharge.
  • FIG. 21 shows a further embodiment with an upstream squeezing device in which the crushing roller 6o is fastened on the axis la, which is extended into the central recess 79a of the rotationally fixed millstone.
  • the bush 54a is rotatably mounted on an eccentric 61, preferably on ball bearings 62, so that a pinch gap 55a is formed between the crushing roller 6 0 and the bush 54a, which can be changed in the seat 4 in the seat by adjusting the angle of the eccentric 61 .
  • the bush 54 can protrude beyond the grinding gap 17 and produce higher performance.
  • the bushing 54 can also be rotatably supported in this embodiment in a sleeve 61a which is eccentrically recessed for setting the gap, with the regrind being fed from one side in one half and discharged on the other side in the other half.
  • a corresponding thread-like profile of the crushing roller 6 0 serves the axial conveying movement. A separation of the two conveying areas is easily possible thanks to side covers and a fixed separator.
  • a gear preferably with a selectable transmission ratio, can be arranged between the axis 1 a and the driving motor 1 in order to optimize the grinding performance with different regrind and grinding degree.
  • a gear preferably with a selectable transmission ratio
  • a connection possibility for a mains-independent auxiliary drive can be provided, for example in the form of a pulley, so that the grist mill can be used as a catastrophe mill, for which it is well suited because of the high grinding quality.
  • the grinding gap is not, as shown in FIG. 1, horizontal or, as shown in FIG. 3, vertical, but is arranged obliquely.
  • the threaded sleeves and threaded spindles can also be arranged in reverse as shown and the spindle drive and the spindle bearing can be interchanged between the housing and the grinding stone.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
EP84101744A 1983-02-23 1984-02-20 Concasseur de grains Withdrawn EP0122402A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3306216 1983-02-23
DE3306216 1983-02-23

Publications (2)

Publication Number Publication Date
EP0122402A2 true EP0122402A2 (fr) 1984-10-24
EP0122402A3 EP0122402A3 (fr) 1986-11-12

Family

ID=6191574

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101744A Withdrawn EP0122402A3 (fr) 1983-02-23 1984-02-20 Concasseur de grains

Country Status (1)

Country Link
EP (1) EP0122402A3 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0227879A3 (en) * 1985-12-28 1988-08-03 Masamichi Nagao Grinder for use in grinding apparatus
WO1999007473A1 (fr) * 1997-08-11 1999-02-18 Braibanti Golfetto S.P.A. Broyeur
US6215114B1 (en) 1997-09-25 2001-04-10 Canon Kk Optical probe for detecting or irradiating light and near-field optical microscope having such probe and manufacturing method of such probe
CN109277138A (zh) * 2018-10-10 2019-01-29 湖州职业技术学院 一种电动石磨
AT521570A2 (de) * 2018-08-10 2020-02-15 Florian Reininger Mühle
CN111804389A (zh) * 2020-07-22 2020-10-23 张纪彬 一种有机面粉生产加工方法
CN113318822A (zh) * 2021-05-14 2021-08-31 西安交通大学医学院第二附属医院 一种麻醉科用药物处理装置
WO2022058760A1 (fr) * 2020-09-18 2022-03-24 Gela Sulaberidze Procédé de production de son de blé alimentaire et dispositif pour sa réalisation
CN118454868A (zh) * 2024-07-11 2024-08-09 江苏圣天新材料有限公司 一种硅微粉生产加工用粉碎设备

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE486206A (fr) *
DE231359C (fr) *
FR955821A (fr) * 1950-01-20
FR338088A (fr) * 1902-11-25 1904-05-07 Heinrich Bleuler Moulin à farine
CH94010A (de) * 1917-06-20 1922-04-01 Beck Rudolf Mahlgang.
US2051716A (en) * 1935-02-04 1936-08-18 Oscar A Johnson Grinding mill
DE652678C (de) * 1937-01-13 1937-11-04 Max Menzel Mahlvorrichtung fuer Holzstoff u. dgl.
CH195123A (de) * 1937-09-24 1938-01-15 Eirich Geb Verfahren und Vorrichtung zur Herstellung eines homogenen, feinfasrigen Gutes.
GB619098A (en) * 1946-11-20 1949-03-03 George Theophilus Money Improvements in the construction of grinding wheels
DE1020516B (de) * 1953-03-04 1957-12-05 Ludwig Krueger Muehlstein
FR1195595A (fr) * 1958-05-05 1959-11-18 Perfectionnements aux meules, notamment pour le travail de la pierre
US3688996A (en) * 1971-01-25 1972-09-05 Johnnie Kuest Flour mill
US3761027A (en) * 1971-03-15 1973-09-25 F Mendoza Disk mill
US3880367A (en) * 1973-09-14 1975-04-29 Suncrest Products Inc Grain mill
DE2348338C3 (de) * 1973-09-26 1983-12-01 Norddeutsche Schleifmittel-Industrie Christiansen & Co (GmbH & Co), 2000 Hamburg Aus Bindemittel und Schleifkorn bestehender Schleifkörper
DE3130519A1 (de) * 1981-08-01 1983-02-17 A. Hilmar Dr.-Ing. 7031 Aidlingen Burggrabe Mahlwerk einer haushalts-getreidemuehle

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0227879A3 (en) * 1985-12-28 1988-08-03 Masamichi Nagao Grinder for use in grinding apparatus
WO1999007473A1 (fr) * 1997-08-11 1999-02-18 Braibanti Golfetto S.P.A. Broyeur
US6215114B1 (en) 1997-09-25 2001-04-10 Canon Kk Optical probe for detecting or irradiating light and near-field optical microscope having such probe and manufacturing method of such probe
AT521570A3 (de) * 2018-08-10 2022-07-15 Florian Reininger Mühle
AT521570A2 (de) * 2018-08-10 2020-02-15 Florian Reininger Mühle
AT524199B1 (de) * 2018-08-10 2024-07-15 Reininger Florian Mühle
AT521570B1 (de) * 2018-08-10 2023-01-15 Florian Reininger Mühle
AT524199A5 (de) * 2018-08-10 2022-03-15 Reininger Florian Mühle
CN109277138A (zh) * 2018-10-10 2019-01-29 湖州职业技术学院 一种电动石磨
CN109277138B (zh) * 2018-10-10 2024-03-15 湖州职业技术学院 一种电动石磨
CN111804389A (zh) * 2020-07-22 2020-10-23 张纪彬 一种有机面粉生产加工方法
WO2022058760A1 (fr) * 2020-09-18 2022-03-24 Gela Sulaberidze Procédé de production de son de blé alimentaire et dispositif pour sa réalisation
CN113318822A (zh) * 2021-05-14 2021-08-31 西安交通大学医学院第二附属医院 一种麻醉科用药物处理装置
CN118454868A (zh) * 2024-07-11 2024-08-09 江苏圣天新材料有限公司 一种硅微粉生产加工用粉碎设备

Also Published As

Publication number Publication date
EP0122402A3 (fr) 1986-11-12

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