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WO1998011990A1 - Paroi de separation de broyeur - Google Patents

Paroi de separation de broyeur Download PDF

Info

Publication number
WO1998011990A1
WO1998011990A1 PCT/EP1997/005153 EP9705153W WO9811990A1 WO 1998011990 A1 WO1998011990 A1 WO 1998011990A1 EP 9705153 W EP9705153 W EP 9705153W WO 9811990 A1 WO9811990 A1 WO 9811990A1
Authority
WO
WIPO (PCT)
Prior art keywords
partition
wall
clamping
mill
elements
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.)
Ceased
Application number
PCT/EP1997/005153
Other languages
German (de)
English (en)
Inventor
Erich Pichlmaier
Peter Kindel
Helmut KRÜNES
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.)
CHRISTIAN PFEIFFER MASCHINENFABRIK GmbH
Original Assignee
CHRISTIAN PFEIFFER MASCHINENFABRIK 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 CHRISTIAN PFEIFFER MASCHINENFABRIK GmbH filed Critical CHRISTIAN PFEIFFER MASCHINENFABRIK GmbH
Priority to AU47759/97A priority Critical patent/AU4775997A/en
Publication of WO1998011990A1 publication Critical patent/WO1998011990A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/1835—Discharging devices combined with sorting or separating of material
    • B02C17/1855—Discharging devices combined with sorting or separating of material with separator defining termination of crushing zone, e.g. screen denying egress of oversize material

Definitions

  • the invention relates to a mill partition according to the preamble of claim 1.
  • a generic mill partition which has a front slit wall in the direction of the material flow and a rear wall with a central air passage opening.
  • the diaphragm wall and rear wall consist of partition wall plates, which are designed like ring segments and are attached to a wall scaffold.
  • the wall structure gives the mill partition the required stability and has essentially radially arranged separating plates, which are also referred to as lifting blades.
  • the dividing wall panels are attached with tear-off screws, which are positively received in counterbores and secured to mounting flanges of the wall scaffold or the lifting blades.
  • radially aligned strips are arranged in the radial direction and preferably along the lifting blades, which protrude at least slightly from the plane of the slot or rear wall.
  • the radial strips have a repelling function, in particular with respect to the grinding media, and are also referred to as wear bars.
  • the strips are relatively narrow and are preferably made of a hard, wear-resistant material. It is attached to the mounting flanges of the wall scaffold or the lifting blades with tear-off screws that are secured with nuts and run from the diaphragm wall to the rear wall.
  • the arrangement of the radially arranged strips or wear bars requires additional fastening areas on the wall structure. Another cost factor is the fastening and die bores, which have to be drilled into the partition wall panels. These mounting holes and dies have a disadvantageous effect, in particular in the case of hardened, more wear-resistant plates. Since there is an increased risk of breakage with hardening, the corner and edge areas break out when a hole is drilled, which also leads to increased production costs.
  • the invention is based on the objective of creating a mill partition wall with a fastening arrangement for partition wall plates, which ensure high wear resistance and at the same time particularly low manufacturing and assembly costs.
  • the invention is based on the basic idea of fastening partition wall panels of a diaphragm wall and / or a rear wall to a wall or supporting structure of a mill partition wall in such a way that the fastening holes can be dispensed with and the risk of breakage associated therewith is avoided.
  • clamping elements are provided according to the invention, which have a repelling function and an additional function enable according to the fastening concept according to the invention.
  • the clamping elements according to the invention can be plate-shaped or strip-shaped or punctiform, for example in the form of a "button".
  • clamping plates in the radial direction, i.e. as radial strips, or to form a circular ring, i.e. as axial strips, form and arrange for fastening the partition panels.
  • the point-shaped clamping elements which are referred to briefly below as clamping buttons, can have a different shape and can be, for example, square, polygonal or also round.
  • radial strips and / or circular strips act as clamping strips and / or clamping buttons with a wall structure of the mill partition according to the invention or with fastening regions of the wall structure.
  • These fastening areas are generally designed parallel to the diaphragm wall and / or rear wall.
  • the clamping bracket according to the invention is carried out in an extremely advantageous manner in the area of the radial and / or circular edges of adjoining partition wall plates and the inner and outer ring segments of a partition wall.
  • Recesses are expediently made in these edge regions and are preferably semicircular, in the corner regions also a 90-degree circular cutout, so that round openings are formed when the partition wall panels are placed against one another.
  • the edge regions of a partition wall plate are expediently each provided with at least two edge recesses. In alignment with the edge recesses of two adjoining partition plates, bores or dies are formed in a clamping strip or a clamping button, which rest on the radial edge regions in the fixed state, so that fastening elements can be guided and secured.
  • Countersunk screws and preferably tear-off screws are used in particular as fastening elements. These fastening elements are guided through the die-drilled holes of the clamping element and through fastening bores of mounting elements of the wall scaffold or the fastening flanges of the wall scaffold and secured on a rear side of the fastening flanges. As a rule, hexagon nuts with washers are used as locking elements.
  • the clamping strips and clamping buttons are preferably rectangular in cross-section with edge-side contact surfaces for the edge regions of the partition wall panels and have an upper and outwardly directed trapezoidal region.
  • the counterbore is followed by a receiving area in the form of a recess, which is directed toward the partition wall panels and towards the wall scaffold and is designed to be complementary to a head area of the mounting element.
  • the assembly is carried out in such a way that partition wall panels are placed with their edge areas on the wall structure or the fastening flanges.
  • the edge recesses are form-fitting on the outer surfaces of the assembly elements of the day. Since the assembly elements protrude above the partition wall panels when the partition plates are in place, the terminal strips or clamping buttons, which have receiving areas for the head regions of the mounting elements, can be plugged on. Fastening elements, for example a tear-off screw, are then inserted through the aligned bores and screwed tight against nuts as securing elements. With the fastening of the clamping strips or clamping buttons, the adjoining partition wall panels are thus clamped in and a secure and stable mounting on the wall scaffold.
  • the formation of the edge recesses of the partition panels is relatively simple by burning out. There is no risk of breakage, so that highly wear-resistant partition panels can advantageously be used.
  • Such a highly wear-resistant partition wall plate can, for example, be constructed in a sandwich-like manner and have a first layer or plate which consists of a tough, elastic material.
  • a wear layer or plate can be provided as a second layer or plate, which consists of a highly wear-resistant material or also of a tough, elastic material with geometrical bodies arranged therein made of a highly wear-resistant active ingredient or a combination of materials.
  • an additional arrangement of wear bars can be dispensed with, since the clamping elements, in particular the terminal strips, not only serve to fasten the partition wall plates, but at the same time serve as a deflecting function due to their relatively large projection over the diaphragm wall and / or rear wall as lifting strips for the grinding media and the like Serve regrind.
  • Fig. 1 is a plan view of an area of a
  • Fig. 2 is a section along line A-A of FIG. 1;
  • Fig. 3 is a section along line B-B of FIG. 1;
  • Fig. 4 is a section along line C-C of FIG. 1;
  • Fig. 5 is an exploded view of the clamp bracket according to the invention analogous to Fig. 2;
  • Fig. 6 is a plan view of an area of a
  • Fig. 7 is a section along line A-A of FIG. 6;
  • Fig. 8 is a section along line C-C of FIG. 6;
  • Fig. 9 is a plan view of an area of a
  • Diaphragm wall of a mill partition according to the invention with a further alternatively designed clamping bracket and
  • FIG. 10 shows a section along line B-B according to FIG. 9.
  • the middle and outer ring segments 13, 23 consist of partition plates 10 in the form of annular segments, which are provided with slot-shaped openings 15 and adjoin one another at arcuate radial and circular edge regions 11, 31.
  • the partition wall panels 10 are fastened in the region of the radial edge regions 11, which are provided with semicircular edge recesses 12 for this purpose.
  • edge recesses 12 can be carried out particularly simply by burning out. In doing so the edge recesses 12 are dimensioned such that an opening 17 is formed when the partition plates 10 are placed against one another, which opening is only slightly larger than the outer circumference of a mounting element 6 of the wall structure 5 (see FIGS. 2, 4 and 5).
  • a radial edge region 11 of a partition plate 10 is provided with at least two edge recesses 12, so that the partition plates 10 are clamped with a clamping element 4, each with at least two fastening elements 20.
  • a clamping strip 8 is used as the clamping element 4, which is arranged almost radially and thereby covers, protects and fixes the radial edge regions 11 of the two adjoining partition wall plates 10.
  • FIG. 2 shows two partition wall panels 10, which lie flat against a wall scaffold 5 or fastening flanges of the wall scaffold 5 and bear with their edge recesses 12 in a form-fitting manner on a mounting element 6.
  • the mounting element 6 is cylindrical and welded into the wall structure 5 and has such a height that it projects with a head region 16 over the surface of the partition wall panels 10. With the head region 16, the mounting element 6 protrudes into an attached terminal strip 8, which has a complementarily designed receiving region 18.
  • the partition plates 10 are fastened and clamped to the wall scaffold 5 with the aid of a fastening element 20 which is passed through a die hole 9 Terminal strip 8, through a fastening opening 7 of the mounting element 6 to the rear of the wall scaffold 5 and is secured and screwed there with a securing element 30, for example a hexagon nut.
  • a countersunk screw and especially a tear-off screw are used as the fastening element 20.
  • this tear-off screw consists of a tear-off square 22 above a screw head 26, the tear-off square 22 ensuring that the screw connection can be tightened with a defined tightening torque. When the necessary tightening torque is reached, the square 22 breaks off.
  • a conical transition 25 is formed between the screw head 26 and a screw shaft 27 with thread. This avoids a sharp-edged transition that could lead to voltage peaks.
  • the terminal strips 8 are rectangular in cross section with an upper trapezoidal region 14.
  • the height of the clamping strips 8 corresponds approximately to the thickness of the partition wall plates 10.
  • the inclined surfaces 19 on a trapezoidal area 14 of the clamping strips 8 cause the regrind and / or the grinding media in the adjacent grinding chamber to be rejected. It is advisable to produce the clamping strips 8, which due to their height can also take ground material and / or grinding media and act as lifting strips, from a wear-resistant material.
  • the countersunk hole 9 formed in the terminal strips 8 is complementary to the screw head 26 and the conical transition 25 of the tear-off screw 20 and merges into a receiving area 18 for the head areas 16 of the mounting elements 6 on the wall structure 5.
  • the mounting elements 6 are received and fixed, in particular welded, in alignment in appropriately designed openings in the wall structure 5 or the fastening flanges.
  • 3 shows a clamping strip 8 in the region of the adjoining radial edge regions 11 of two partition wall plates 10.
  • 3 shows that the terminal strips 8 with bearing surfaces 28 rest on a relatively wide area of the two adjoining partition plates 10, so that a stable and secure attachment of the partition plates 10 is also given when surface areas of the partition plates 10, which are basically one Subject to wear and tear.
  • the terminal strips 8 counteract wear on the partition plates, a stable and complete hold is ensured over a particularly long period. Since particularly wear-resistant partition wall plates can be used due to the clamping bracket, the service life of a mill partition wall produced according to the invention is particularly long.
  • FIG. 4 shows two fastening elements 20 which hold a clamping strip 8 and at the same time two radially adjacent partition wall plates 10 in a clamping bracket on a wall structure 5.
  • fastening elements 20 Tear screws used, the tear-off square 22 is still connected to the screw head 26. Hexagon nuts are used as securing elements 30.
  • Both the mounting elements 6 and the terminal block 8 consist of a wear-resistant material.
  • a cylindrical mounting element 6 is welded into the wall scaffold 5 or a fastening flange of the wall scaffold 5, which protrudes in the assembled state with a head region 16 over the partition wall plates 10 and is received in a form-fitting manner in a receiving region 18 of the terminal strip 8.
  • the mounting elements 6 with their projecting head regions 16 act as locking elements for the clamping or lifting strips 8 to be fastened.
  • the clamping effect of the clamping strips 8 can be determined by the height of the mounting elements 6.
  • the dimensions of the mounting elements 6, the terminal strips 8 and the edge recesses 12 of the partition wall plates 10 are expediently coordinated with one another.
  • the die bores 9 in the terminal strips 8 are complementary to the fastening elements 20, in particular to the screw head 26 and to the conical transition 25 with screw shaft 27.
  • the fastening element 20 is fixed with the aid of a hexagon nut as a securing element 30, which interacts with a washer 32.
  • the structure of the mill partition 2 of FIG. 6 basically corresponds to the partition 2 of FIG. 1. Identical features are provided with identical reference symbols. Instead of the radially arranged clamping strips 8, however, the partition panels 10 are fastened in the region of their circularly adjacent edge regions 31.
  • the edge recesses 12 are therefore designed as semicircular recesses in the circular edge regions 31 and cooperate with clamping strips 38, which represent narrow circular ring segments and form a circular ring when the partition 2 is fully assembled.
  • the circular strips 38 are also used in the area of the inner ring segment 3 and an outer ring segment 33 and the adjacent partition wall plates 10.
  • Figures 7 and 8 illustrate that the principle of the clamping bracket when using circular strips 38 as clamping elements 4 basically corresponds to that of the radially arranged clamping strips 8.
  • a clamping strip 38 in the region of the adjoining circular edge regions 31 rests with contact surfaces 28 on the edge regions 31 of a middle ring segment 13 and an adjacent outer ring segment 23.
  • the attachment takes place in the area of a wall scaffold 5 or in the area of attachment flanges of the wall scaffold 5 with the aid of a mounting element 6 which, in contrast to the first embodiment according to FIGS. 2 to 5, is attached to the wall scaffold.
  • the bore 9 formed in the circular bar 38 as well as the fastening opening 7 in the mounting element 6 and a fastening opening 35 in the wall structure 5 are aligned and designed to receive a fastening element 20, preferably a tear-off screw.
  • Fig. 8 shows a longitudinal section through a circularly arranged terminal strip 38 and illustrates the arrangement of the Components of the clamping bracket in the area of the wall scaffold 5 with radially aligned fastening flanges for receiving and securing the fastening elements 20.
  • clamping bracket shown schematically in FIGS. 9 and 9 uses point-acting clamping elements 4, which are referred to as clamping buttons 36.
  • clamping buttons 36 are used, which have a square outline and, analogously to the clamping strips 8, 38, a receiving area 18 for a mounting element 6.
  • the top view of a partition 2 according to FIG. 9 shows that the clamping buttons 36 are arranged in corner areas of the partition plates 10 of the outer ring segment 23. In these areas, the wall structure 5 has fastening flanges which are provided with an opening 35 for receiving a fastening element 20 (FIG. 10).
  • the clamping buttons 36 are demineralized in such a way that the adjacent three or even four partition wall plates 10 or inner ring segments 3 or outer ring segments 23 are covered and thus securely fastened. At the same time, protection of the partition wall panels 10 in the region of the edge recesses 12 is achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Connection Of Plates (AREA)
  • Crushing And Grinding (AREA)

Abstract

L'invention concerne une paroi de séparation de broyeur, notamment une paroi de transfert et de décharge pour tubes broyeurs, broyeurs à boulets et similaires, comportant des plaques de paroi de séparation (10) disposées pour former une paroi présentant des fentes et/ou une paroi arrière et fixées à une charpente de paroi (5). Afin de parvenir à une résistance élevée à l'usure, ainsi qu'à une production et à un montage simples, il est prévu, selon l'invention, que les plaques de paroi de séparation (10) présentent des cavités (12) sur leur bord, dans lesquelles sont guidés des éléments de fixation (20) destinés à fixer des éléments de serrage (4) sous forme de bandes ou de points, situés sur des zones marginales des plaques de paroi de séparation (10).
PCT/EP1997/005153 1996-09-20 1997-09-19 Paroi de separation de broyeur Ceased WO1998011990A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU47759/97A AU4775997A (en) 1996-09-20 1997-09-19 Partition for mills

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996138698 DE19638698A1 (de) 1996-09-20 1996-09-20 Mühlentrennwand
DE19638698.5 1996-09-20

Publications (1)

Publication Number Publication Date
WO1998011990A1 true WO1998011990A1 (fr) 1998-03-26

Family

ID=7806418

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/005153 Ceased WO1998011990A1 (fr) 1996-09-20 1997-09-19 Paroi de separation de broyeur

Country Status (3)

Country Link
AU (1) AU4775997A (fr)
DE (1) DE19638698A1 (fr)
WO (1) WO1998011990A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2215581C2 (ru) * 2001-09-14 2003-11-10 Кочнев Владимир Георгиевич Разгрузочная решетка барабанной мельницы
RU2423181C1 (ru) * 2009-11-19 2011-07-10 Андрей Михайлович Чумохвалов Разгрузочная решетка мельницы
WO2022003232A1 (fr) 2020-06-29 2022-01-06 Metso Outotec Finland Oy Barre de levage, agencement au niveau d'une extrémité de décharge de broyeur et procédé de démontage d'extrémité de décharge de broyeur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10127258A1 (de) * 2001-06-05 2002-12-12 Krupp Polysius Ag Rohrmühle
DE102010008808B4 (de) * 2010-02-22 2014-08-14 Thyssenkrupp Resource Technologies Gmbh Verfahren zur Herstellung einer Rohrmühle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1362334A (en) * 1919-03-10 1920-12-14 Frank E Marcy Ball-mill
US1550013A (en) * 1922-06-20 1925-08-18 Arthur C Daman Crushing mill
US1614899A (en) * 1921-03-31 1927-01-18 Alexander M Read Pulverizing machine
GB995586A (en) * 1962-06-15 1965-06-16 Bolidens Gruv Ab A screening device in a rotatable drum intended for grinding and/or mixing material
US3599882A (en) * 1970-01-08 1971-08-17 Allis Chalmers Mfg Co Discharge diaphragm assembly for grinding mill or the like
US4365763A (en) * 1979-10-26 1982-12-28 Dominion Engineering Works Limited Discharge zone fastening assembly for grinding mill

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1362334A (en) * 1919-03-10 1920-12-14 Frank E Marcy Ball-mill
US1614899A (en) * 1921-03-31 1927-01-18 Alexander M Read Pulverizing machine
US1550013A (en) * 1922-06-20 1925-08-18 Arthur C Daman Crushing mill
GB995586A (en) * 1962-06-15 1965-06-16 Bolidens Gruv Ab A screening device in a rotatable drum intended for grinding and/or mixing material
US3599882A (en) * 1970-01-08 1971-08-17 Allis Chalmers Mfg Co Discharge diaphragm assembly for grinding mill or the like
US4365763A (en) * 1979-10-26 1982-12-28 Dominion Engineering Works Limited Discharge zone fastening assembly for grinding mill

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GUDAT G ET AL: "UEBERTRAGTRENNWAENDE DER NEUEN GENERATION IN ROHRMUEHLEN FUER DIE ZEMENTMAHLUNG", ZKG INTERNATIONAL, vol. 45, no. 1, 1 January 1992 (1992-01-01), pages 26 - 31, XP000249473 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2215581C2 (ru) * 2001-09-14 2003-11-10 Кочнев Владимир Георгиевич Разгрузочная решетка барабанной мельницы
RU2423181C1 (ru) * 2009-11-19 2011-07-10 Андрей Михайлович Чумохвалов Разгрузочная решетка мельницы
WO2022003232A1 (fr) 2020-06-29 2022-01-06 Metso Outotec Finland Oy Barre de levage, agencement au niveau d'une extrémité de décharge de broyeur et procédé de démontage d'extrémité de décharge de broyeur
CN114082511A (zh) * 2020-06-29 2022-02-25 美卓奥图泰芬兰有限公司 升降杆、研磨机出料端处装置及拆卸研磨机出料端的方法
EP4171824A4 (fr) * 2020-06-29 2024-04-10 Metso Outotec Finland Oy Barre de levage, agencement au niveau d'une extrémité de décharge de broyeur et procédé de démontage d'extrémité de décharge de broyeur

Also Published As

Publication number Publication date
AU4775997A (en) 1998-04-14
DE19638698A1 (de) 1998-03-26

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