EP0706826A1 - Broyeur à cylindres multiples - Google Patents

Broyeur à cylindres multiples Download PDF

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Publication number
EP0706826A1
EP0706826A1 EP94116298A EP94116298A EP0706826A1 EP 0706826 A1 EP0706826 A1 EP 0706826A1 EP 94116298 A EP94116298 A EP 94116298A EP 94116298 A EP94116298 A EP 94116298A EP 0706826 A1 EP0706826 A1 EP 0706826A1
Authority
EP
European Patent Office
Prior art keywords
roller mill
multiple roller
mill according
grinding
rollers
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Withdrawn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
EP94116298A
Other languages
German (de)
English (en)
Inventor
Bernardino Bernardi
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.)
SANGATI SpA
Original Assignee
SANGATI SpA
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 SANGATI SpA filed Critical SANGATI SpA
Priority to EP94116298A priority Critical patent/EP0706826A1/fr
Publication of EP0706826A1 publication Critical patent/EP0706826A1/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Withdrawn legal-status Critical Current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
    • B02C11/00—Other auxiliary devices or accessories specially adapted for grain mills
    • B02C11/08—Cooling, heating, ventilating, conditioning with respect to temperature or water content
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
    • B02C4/06—Crushing or disintegrating by roller mills with two or more rollers specially adapted for milling grain

Definitions

  • the invention relates to a multiple roller mill for grinding grain with at least one upper pair of rollers to form an upper grinding gap and at least one lower, lower pair of rollers to form at least one lower grinding gap for the production of grain grinding products.
  • the invention has for its object to improve a multiple roller mill of the type mentioned in a simple manner in such a way that an increased grinding product quality and possibly also yield can be achieved.
  • cooling devices are arranged between the upper pair of rolls and the lower pair of rolls in such a way that at least portions of the millbase emerging from the upper grinding gap are cooled in the cooling devices before the ground material is fed to the lower grinding gap.
  • roller pairs are preferably essentially vertically one above the other in such a way that the grinding gaps are also essentially perpendicular to one another. This leads to a minimal space requirement.
  • the multiple roller mill is preferably constructed in accordance with a double roller mill in such a way that two upper and two lower pairs of rollers are each arranged in a preferably horizontal plane. This not only saves space, it also creates optimal static conditions.
  • the grinding gaps of the upper pairs of rollers are preferably set independently of the grinding gaps of the lower pairs of rollers, so that the material to be ground passes successively narrowing gaps, as is known per se.
  • the grinding gap setting can also be provided in such a way that a first adjusting device adjusts the grinding gap of both the upper and the lower roller pairs jointly and a second setting device adjusts the grinding gap of only the lower roller pair depending on the grinding gap of the upper roller pair , thus only sets a grinding gap difference.
  • the grinding gaps of all the rollers lying in one plane become common set to the same values in order to achieve a uniform setting more easily in larger systems in which the regrind flow is divided into double roller pairs.
  • the cooling devices can be provided in various forms.
  • the (already necessary) guide plates and insertion funnels for supplying the ground material to the lower nip are cooled, so that the part of the ground material that comes into contact with the guide plates can give off heat.
  • the cooling devices comprise air guiding devices which are designed such that the ground material is exposed to a cooling air flow. Such "airing" of the ground material also has taste advantages and is also particularly effective in terms of cooling performance.
  • the cooling devices preferably comprise classifying devices through which fractions of the ground material can be removed therefrom.
  • classifying devices through which fractions of the ground material can be removed therefrom.
  • so to speak "two birds are killed with one stone".
  • very effective cooling is achieved, on the other hand, certain, in particular very fine fractions can be removed from the regrind stream within the roller mill, which considerably improves the quality of the product.
  • the classifying devices remove heat from the regrind.
  • the classifying devices comprise at least one sieve and a suction device which allows one of the fractions to flow to the next grinding gap and (initially) removes the other fraction from the ground material flow.
  • the screen of the classifier is preferably arranged within the roller mill with its horizontal inclination adjustable so that the fraction or the grain size can be adjusted in certain areas.
  • the sieve is preferably mounted so that it can move and is connected to an oscillating drive, usually with an air unbalance drive, as is known per se from classifying technology.
  • FIGS. 1 to 3 are a quadruple roller mill in which an upper pair of rollers 10, 10 'and a lower pair of rollers 20, 20' are provided. It is of course also possible to arrange further pairs of rollers under the lower pair of rollers 20, 20 '.
  • roller pairs 10, 10 ' form mutually adjustable grinding gaps 11, 11', the roller pairs 20, 20 'together form grinding gaps 21, 21'.
  • the regrind is fed through a feed channel 2 to a housing 1 via feed rollers 3, 3 'to the first grinding gaps 11, 11'.
  • the ground material After passing through the first grinding gap 11, 11 ', the ground material arrives at a cooling device 30, 30', which is only indicated in FIG. 1 and is shown in more detail in FIG. 2.
  • the cooling device 30 comprises, as shown in FIG. 2, baffles 16, 16 'which are provided on or under wipers 13, 14 for wiping the ground material from the pair of rollers 10 in such a way that the ground material is placed under a baffle plate 16, 16'. lying sieve 32 is guided.
  • the baffles 16, 16 ' are preferably cooled.
  • the sieve 32 is arranged inclined to the horizontal and sits as a cover on an air guiding and collecting trough 31 and is firmly connected to it.
  • the tub 31 is attached to rubber bearings 35 and thus held in the housing 1.
  • the unbalance motor 34 is fastened in such a way that, when it is in operation, the air guiding and collecting trough 31 swings together with the sieve 32 located thereon and the ground material guided on it is conveyed further, smaller particles falling through the sieve 32.
  • the interior of the air guiding and collecting trough 31 covered by the sieve 32 is connected via a connecting piece 33 (movable) to a suction pipe 36, through which both air and ground material which has fallen through the sieve 32 are transported away.
  • the air flow passes through the ground material flowing on the sieve 32 and cools it in the process.
  • the regrind falling from the (inclined) sieve 32 is fed via further baffles, which may be cooled, to the lower grinding gap 21 for further grinding and is finally through a discharge channel 4, 4 ', which is shown in FIGS. 1 and 3 is dissipated.
  • control doors 15 and 17 are provided for constant monitoring. Ground material falling from the upper grinding gap 11 can be removed via the upper control door 15 and ground material falling from the lower grinding gap 21 can be removed and checked via the lower control door 17.
  • FIG. 4 differs from that according to FIGS. 1 to 3 on the one hand in that the ground material falling down from the lower grinding gap 21, 21 'first falls into a collecting trough 6, 6' and then over a delivery pipe 5, 5 'is sucked upwards.
  • the air sucked out of the cooling device 30 is discharged upward via the suction pipe 36, 36 ′, as is shown both in FIG. 4 and in FIG. 8.
  • this embodiment also shows in more detail with reference to FIGS. 5 and 7 how the air guiding and collecting trough 31 is fastened with the sieve 32 located thereon is.
  • This attachment takes place on the one hand via the fixed rubber bearings 35, 35 'in FIG. 7 on the right, as is shown in particular in FIGS. 6 and 7, on the other hand via the rubber bearings 35 on the left in FIG. 7, which are attached to a mounting flange 37 an elongated hole are attached, in which an adjusting screw 38 is seated such that after loosening the adjusting screw 38 of the fastening flange 37 and with it the air guide and collecting trough 31 with the connecting piece 33 fastened thereon are pivotable, so that the inclination of the screen 32 with respect to the horizontal is adjustable.
  • the connecting piece 33 is essentially tight but slidable in an arcuate path in the end of the suction tube 36, so that a substantially completely sealed but nevertheless mechanically movable connection between the suction tube 36 and the interior of the air guiding and collecting trough 31 with the sieve located thereon 32 is ensured.
  • control doors 15 and 17 are also provided for monitoring the ground material in this embodiment of the invention.
  • Fig. 9 the mechanical structure of the roller mill is again indicated with regard to other details.
  • this figure shows that in the embodiment of the invention shown there, the two upper roller pairs 10 and 10 'can be adjusted by means of a single common upper adjusting device 18, while the lower roller pairs 20, 20' can be adjusted with regard to their grinding gaps via a lower adjusting device 28 are.
  • an upper release device 19 and a lower disengaging device 29 is provided, by means of which the rollers are moved apart when there is no ground material.
  • these disengaging devices 19 and 20 or 19 'and 20' are operated synchronously with each other.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP94116298A 1994-10-17 1994-10-17 Broyeur à cylindres multiples Withdrawn EP0706826A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94116298A EP0706826A1 (fr) 1994-10-17 1994-10-17 Broyeur à cylindres multiples

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94116298A EP0706826A1 (fr) 1994-10-17 1994-10-17 Broyeur à cylindres multiples

Publications (1)

Publication Number Publication Date
EP0706826A1 true EP0706826A1 (fr) 1996-04-17

Family

ID=8216388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94116298A Withdrawn EP0706826A1 (fr) 1994-10-17 1994-10-17 Broyeur à cylindres multiples

Country Status (1)

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EP (1) EP0706826A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0949003A2 (fr) 1998-04-07 1999-10-13 OCRIM S.p.A. Dispositif de broyage à double passage, appareil et procédé utilisant ce dispositif
WO2000001488A1 (fr) * 1998-07-03 2000-01-13 Braibanti Golfetto S.P.A. Procede de broyage de grain multipassage avec separation intermediaire, et appareil correspondant
RU2522799C1 (ru) * 2013-01-09 2014-07-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Белгородский государственный технологический университет им. В.Г. Шухова" Пресс-валковый агрегат
CN107790219A (zh) * 2017-10-23 2018-03-13 宁波华九文化传媒有限公司 废弃固化混凝土粉碎处理装置
CN114308227A (zh) * 2020-09-29 2022-04-12 湖南富硒壹号生态农业科技有限责任公司 一种富硒米加工用两级碾磨装置
CN117463428A (zh) * 2023-12-27 2024-01-30 黑龙江八一农垦大学 一种粮食加工碾磨机构及磨面设备
CN120022975A (zh) * 2025-03-25 2025-05-23 山东金有粮脱皮制粉设备有限公司 一种卧式多转子磨粉机

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE5378C (de) * D. C. NEWELL in New-York Neuerungen an Schrotmühlen
GB191019149A (en) * 1910-08-15 1911-04-27 Arthur Rollason Improvements in and relating to the Milling of Flour.
GB191229880A (en) * 1913-06-28 1914-06-25 James Higginbottom Improvements in and relating to Processes and Apparatus for Breaking, Separating and Purifying the Broken Products of Wheat or other Cereals.
US1377976A (en) * 1919-02-28 1921-05-10 Daisy Dell Sheldon Flour-milling machinery
DE474461C (de) * 1926-02-25 1929-04-03 Moulins De La Caulre Ind Soc D Vorrichtung zum Kuehlen des in Muehlen gewonnenen Mahlgutes mittels gekuehlter Luft
GB412589A (en) * 1932-12-29 1934-06-29 Herbert Wallace Vernon Improvements in or relating to mills for grinding flour and the like
US4225093A (en) * 1979-02-21 1980-09-30 Buehler-Miag Gmbh Rolling mill for milling cereals and similar material
WO1989003245A1 (fr) * 1987-10-06 1989-04-20 Gebrueder Buehler Ag Procede de fabrication de produits de ble moulu et moulin a cylindres

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE5378C (de) * D. C. NEWELL in New-York Neuerungen an Schrotmühlen
GB191019149A (en) * 1910-08-15 1911-04-27 Arthur Rollason Improvements in and relating to the Milling of Flour.
GB191229880A (en) * 1913-06-28 1914-06-25 James Higginbottom Improvements in and relating to Processes and Apparatus for Breaking, Separating and Purifying the Broken Products of Wheat or other Cereals.
US1377976A (en) * 1919-02-28 1921-05-10 Daisy Dell Sheldon Flour-milling machinery
DE474461C (de) * 1926-02-25 1929-04-03 Moulins De La Caulre Ind Soc D Vorrichtung zum Kuehlen des in Muehlen gewonnenen Mahlgutes mittels gekuehlter Luft
GB412589A (en) * 1932-12-29 1934-06-29 Herbert Wallace Vernon Improvements in or relating to mills for grinding flour and the like
US4225093A (en) * 1979-02-21 1980-09-30 Buehler-Miag Gmbh Rolling mill for milling cereals and similar material
WO1989003245A1 (fr) * 1987-10-06 1989-04-20 Gebrueder Buehler Ag Procede de fabrication de produits de ble moulu et moulin a cylindres

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0949003A2 (fr) 1998-04-07 1999-10-13 OCRIM S.p.A. Dispositif de broyage à double passage, appareil et procédé utilisant ce dispositif
EP0949003A3 (fr) * 1998-04-07 2000-01-05 OCRIM S.p.A. Dispositif de broyage à double passage, appareil et procédé utilisant ce dispositif
US6293478B1 (en) 1998-04-07 2001-09-25 Ocrim S.P.A. Milling device with double milling passage, apparatus using the device, and method using the device
WO2000001488A1 (fr) * 1998-07-03 2000-01-13 Braibanti Golfetto S.P.A. Procede de broyage de grain multipassage avec separation intermediaire, et appareil correspondant
RU2522799C1 (ru) * 2013-01-09 2014-07-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Белгородский государственный технологический университет им. В.Г. Шухова" Пресс-валковый агрегат
CN107790219A (zh) * 2017-10-23 2018-03-13 宁波华九文化传媒有限公司 废弃固化混凝土粉碎处理装置
CN114308227A (zh) * 2020-09-29 2022-04-12 湖南富硒壹号生态农业科技有限责任公司 一种富硒米加工用两级碾磨装置
CN117463428A (zh) * 2023-12-27 2024-01-30 黑龙江八一农垦大学 一种粮食加工碾磨机构及磨面设备
CN117463428B (zh) * 2023-12-27 2024-03-12 黑龙江八一农垦大学 一种粮食加工碾磨机构及磨面设备
CN120022975A (zh) * 2025-03-25 2025-05-23 山东金有粮脱皮制粉设备有限公司 一种卧式多转子磨粉机

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