EP0636414A2 - Broyeur à meules - Google Patents

Broyeur à meules Download PDF

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Publication number
EP0636414A2
EP0636414A2 EP94111932A EP94111932A EP0636414A2 EP 0636414 A2 EP0636414 A2 EP 0636414A2 EP 94111932 A EP94111932 A EP 94111932A EP 94111932 A EP94111932 A EP 94111932A EP 0636414 A2 EP0636414 A2 EP 0636414A2
Authority
EP
European Patent Office
Prior art keywords
grinding
perforated
grinding track
tracks
track
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Withdrawn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
EP94111932A
Other languages
German (de)
English (en)
Other versions
EP0636414A3 (fr
Inventor
Frank Händle
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.)
Handle & Co KG GmbH
Original Assignee
Handle & Co KG GmbH
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 Handle & Co KG GmbH filed Critical Handle & Co KG GmbH
Publication of EP0636414A2 publication Critical patent/EP0636414A2/fr
Publication of EP0636414A3 publication Critical patent/EP0636414A3/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Withdrawn legal-status Critical Current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
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/14—Edge runners, e.g. Chile mills

Definitions

  • the present invention relates to a pan mill with runners arranged on a plurality of grinding tracks, scrapers associated with the grinding tracks for conveying the material to be ground on the grinding tracks and drive devices for generating a relative movement between the runners and the grinding tracks and for actuating the scrapers.
  • Such a pan mill is known from DE-PS 194 976. There are two triples in this pan mill Runners are provided, which accordingly run on three graded tracks.
  • a disadvantage of this pan mill is that the regrind transported by scrapers under the rotor stages spaced from the grinding track can only be conveyed in one direction. In addition, all grinding tracks are unperforated and therefore not suitable for removing the ground material. As a result, it is necessary to arrange an additional sieve path, which entails an increased construction outlay and also prevents the regrind from being removed under the action of force.
  • Another disadvantage is that the rotor segments wear unevenly and grind unevenly after some time. In the known arrangement, this is partially offset by the fact that the inner pan mill has an adjustable floor.
  • the present invention is therefore based on the object of designing and developing a pan mill of the type in question in such a way that the grinding material can be conveyed on the grinding tracks in different directions and that the runners can be changed over depending on the degree of wear.
  • the design effort with regard to the arrangements for removing the ground material should be reduced.
  • the pan mill of the type mentioned is designed such that at least three concentric grinding tracks are provided at the same level, of which either the inner or the outer grinding track is perforated and at least one rotor is arranged on each grinding track.
  • the material can be transported in different directions on the grinding tracks if the grinding tracks are arranged concentrically on one level. It has also been recognized that due to the arrangement of the grinding tracks at one level, there is no graded formation of the runners. Furthermore, it has been recognized that the runners can be changed over depending on the degree of wear in the case of stepless training. Finally, it has been recognized that the design effort for a pan mill with regard to the removal of the ground material from the pan mill can be reduced if the discharge takes place through perforations in the grinding track itself.
  • the drive devices for generating a relative movement between the rotors and the grinding tracks can now on the one hand drive the rotors that are installed on the fixed Run around grinding tracks. On the other hand, it is also possible to set the grinding tracks in rotary motion or to move the runner and grinding tracks in opposite directions.
  • the effort with regard to the mechanics of the pan mill is considerably reduced in the case of stationary grinding tracks even compared to known two-rotor arrangements with a fixed grinding track.
  • the storage of a lighter runner is considerably less expensive. It is also advantageous that a much better comminution and mixing can take place if the regrind is exposed to the action of force more often by triple or multiple rolling over.
  • Another possibility for influencing the throughput and the grinding fineness is the special design of the individual grinding tracks.
  • This perforated grinding path is then arranged on the outside when the regrind is fed in the center. If the regrind is fed in from the outside, the perforated grinding path is arranged on the inside. Taking into account the natural flow of material from the inside to the outside, it is preferred to feed the regrind through a chute in the middle.
  • the pan mill according to the invention if, in addition, there is a perforation outer or inner grinding path at least one middle, arranged between the inner and the outer grinding path, is perforated. In this way, the discharge can already begin through the openings of this middle grinding track.
  • the hole sizes could also be varied.
  • the hole size on the middle track or on one of the middle tracks is preferably made smaller than the hole sizes of the inner or outer track. With such a gradation of the hole size, it is now possible to discharge the regrind coming from the unperforated grinding path, if it is already fine enough.
  • the ground material, which is still coarser, is further shredded by the middle runner before it emerges through the larger or equally large holes in the adjacent outer or inner grinding path. If it were important to classify the shredded ground material, it would be conceivable to remove it separately, for example by picking up a collecting plate separately and conveying it from there separately.
  • a particularly high fineness and very good mixing of the material to be ground can be achieved if the middle grinding path or the middle grinding paths remain unperforated.
  • the crushing and grinding takes place more intensely due to the higher number of roll-over processes and the associated frequent application of force.
  • the scrapers enable a favorable distribution of the ground material. They are designed to be adjustable.
  • a particularly preferred embodiment of the pan mill according to the invention provides for at least one, preferably a middle scraper to be set such that it either transports the regrind inwards or outwards on the milling tracks arranged according to the invention at one level.
  • a middle scraper By adjusting the scraper accordingly, the regrind coming from the unperforated web can be returned in whole or in part, so that the residence time is increased.
  • the scraper can also be set so that the regrind is transported in whole or in part on the subsequent web. In any case, the fineness of the grinding, the mixing and the throughput can be influenced or adjusted in this way.
  • the distribution function of the middle scraper means that the material which is still too coarse for the passage through the holes in the middle path is first returned to the inner one Web is returned.
  • the regrind is then returned to the middle grinding track, where a large proportion of the required fineness falls directly through the holes onto the collecting plate. Only when the grain size of the remaining regrind is small enough, for example that a last rollover with the outer runner is sufficient to achieve the desired grain size, does the appropriately set middle scraper guide the regrind outwards.
  • scraper systems are used in a particularly advantageous embodiment of the pan mill according to the invention.
  • these scraper systems also have one or more guide plates. After the scraper has detached or "scraped off" the regrind adhering to the web as a result of the pressing force, the regrind flow is passed through the guide plates, as desired, completely or in part optionally outwards or inwards.
  • Such a doctor system preferably works on the middle grinding track. It can contain a special guide plate, namely the so-called wear plate, which is used in particular to convey regrind that extends beyond the entire surface of the grinding tracks into the grinding track area, preferably back to the perforated inner or the perforated outer grinding track.
  • a scraper system without a wear plate can, for example, already be assigned to the grinding track, which is loaded with regrind via the chute. At this point, the dwell time could already be extended by the fact that the guide plate retards the movement of the goods to form a perforated path.
  • FIG. 1 and 2 together show a pan mill according to the invention with an inner runner 1, a middle runner 2 and an outer runner 3, which run on an inner grinding track 4, a middle grinding track 5 and an outer grinding track 6.
  • the grinding tracks 4, 5, 6 lie on a stable cast roller bed 7.
  • the inner rotor 1 is a scraper 8, the middle rotor 2 is a scraper 9 subordinate.
  • a vertical shaft 10 is drive-connected to the rotors 1, 2, 3 and the scrapers 8 and 9.
  • the runners 1, 2, 3 are arranged in a star shape.
  • the middle scraper 9 is part of a scraper system which contains further means for distributing the regrind, namely a middle guide plate 11 and a wear plate 12. While the guide plate 11 can control the direction of the material flow, the wear plate 12 limits the spread of the millbase in the direction of the outer edge region of the roller bed 7.
  • the scraper 8 is also part of a scraper system which also contains a baffle 13 which also serves to distribute the millbase stream.
  • the baffle 13 is particularly well suited for a spiral forwarding of the millbase to the outside or to the middle grinding path 5.
  • the baffle plate 13 can also delay the forwarding of the millbase by selecting a setting which ensures that the millbase remains on the inside Mahlbahn 4 favors.
  • the regrind is fed via a chute 14 to the inner, unperforated grinding track 4 as a uniform carpet of material.
  • the only perforated outer grinding track 6 has a grate plate 15 and a grate base 16 which are attached to the roller bed 7. It is particularly favorable that such grate plates 15 are interchangeable as needed and also for the inner and middle grinding tracks 4, 5 with selectable hole sizes. Unperforated plates lie on the roller bed 7 in the area of the middle and inner grinding tracks 4, 5.
  • the king shaft 10 is driven via a planetary gear 21 which is arranged at the lower end of the king shaft 10 and which projects through the roller bed 7 through an unspecified passage.
  • An electric motor 22 is arranged below the planetary gear 21 and is connected to the planetary gear 21 via a clutch 23.
  • a collecting plate 24 Arranged below the roller bed 7 is a collecting plate 24 which catches the ground material falling through the holes in the grate plate 15 resting on the outer grinding track 6 and to a conveying device 25, for example a rubber belt conveyor. To rotate the collecting plate 24, there are provided drive devices, which are not designated in greater detail and are arranged below the collecting plate 24.
  • the rotors 1, 2, 3 and the concentric grinding tracks 4, 5, 6 of the installed pan mill are, as can be seen particularly clearly in FIG. 1, surrounded by an upwardly open cylindrical casing 26.
  • the casing 26 is supported by a substructure 27, which stands on a foundation 28 via supports, not shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Crushing And Grinding (AREA)
EP94111932A 1993-07-31 1994-07-30 Broyeur à meules. Withdrawn EP0636414A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934325819 DE4325819A1 (de) 1993-07-31 1993-07-31 Kollergang
DE4325819 1993-07-31

Publications (2)

Publication Number Publication Date
EP0636414A2 true EP0636414A2 (fr) 1995-02-01
EP0636414A3 EP0636414A3 (fr) 1995-04-19

Family

ID=6494222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94111932A Withdrawn EP0636414A3 (fr) 1993-07-31 1994-07-30 Broyeur à meules.

Country Status (2)

Country Link
EP (1) EP0636414A3 (fr)
DE (1) DE4325819A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2116169A1 (es) * 1993-12-27 1998-07-01 Prerovske Strojirny As Metodo de moledura de materia prima y molino de disco destinado a una moledura humeda.
CN104084264A (zh) * 2014-06-10 2014-10-08 浙江立鑫高温耐火材料有限公司 一种可振动的混碾机
CN109465070A (zh) * 2018-10-19 2019-03-15 嘉善顺源金属制品有限公司 一种方便操作的磨粉装置
CN111437933A (zh) * 2020-04-02 2020-07-24 黄小方 一种基于双向旋转进行充分研磨的研磨装置
CN116078492A (zh) * 2022-12-15 2023-05-09 重庆盛勋机械制造有限公司 一种轮碾装置
CN118950213A (zh) * 2024-10-17 2024-11-15 山西众博科技发展有限公司 一种无机注浆材料加工用破碎装置及破碎方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE133930C (fr) *
DE194976C (fr) *
FR339835A (fr) * 1904-01-23 1904-06-20 Bruno Alexander Katz Meule à surface de broyage et à broyeurs à étages concassant ou divisant graduellement la matière à traiter
GB191024660A (en) * 1910-10-24 1911-05-18 Raymond Cassinove Penfield Improvements in Rotary Dry Pan Mills for Grinding and Pulverizing Clay and similar Substances.
US1345715A (en) * 1918-10-05 1920-07-06 William G Stevenson Crushing-machine
DE530719C (de) * 1929-03-09 1931-07-31 Richard Raupach Maschinenfabri Nasskollergang mit rotierenden Laeufern und feststehender Mahlbahn
DE1976039U (de) * 1967-10-24 1967-12-28 Gelsenkirchener Bergwerks Ag Kollergang, insbesondere fuer eine zerkleinerung harter materialien, insbesondere koksgrus.
DE2253824B2 (de) * 1972-11-03 1974-12-19 Karl Haendle & Soehne Maschinenfabrik U. Eisengiesserei, 7130 Muehlacker Kollergang
DE3640081A1 (de) * 1986-11-24 1988-06-01 Rieter Werke Haendle Kollergang
DE9017356U1 (de) * 1990-12-22 1991-03-21 Rieter-Werke Händle KG, 78467 Konstanz Kollergang, insbesondere zur kontinuierlichen trockenen oder nassen Aufbereitung von mineralischem Gut
DE4123526A1 (de) * 1991-07-16 1993-01-21 Erbsloeh Geisenheim Ind Minera Verfahren und vorrichtung zur aktivierung von schichtmineralien

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2116169A1 (es) * 1993-12-27 1998-07-01 Prerovske Strojirny As Metodo de moledura de materia prima y molino de disco destinado a una moledura humeda.
CN104084264A (zh) * 2014-06-10 2014-10-08 浙江立鑫高温耐火材料有限公司 一种可振动的混碾机
CN109465070A (zh) * 2018-10-19 2019-03-15 嘉善顺源金属制品有限公司 一种方便操作的磨粉装置
CN111437933A (zh) * 2020-04-02 2020-07-24 黄小方 一种基于双向旋转进行充分研磨的研磨装置
CN116078492A (zh) * 2022-12-15 2023-05-09 重庆盛勋机械制造有限公司 一种轮碾装置
CN118950213A (zh) * 2024-10-17 2024-11-15 山西众博科技发展有限公司 一种无机注浆材料加工用破碎装置及破碎方法

Also Published As

Publication number Publication date
EP0636414A3 (fr) 1995-04-19
DE4325819A1 (de) 1995-02-09

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