Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B30—PRESSES
  • B30B—PRESSES IN GENERAL
  • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
  • B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
  • B30B11/165—Roll constructions
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B30—PRESSES
  • B30B—PRESSES IN GENERAL
  • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
  • B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
• • 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
  • B02C4/28—Details
  • B02C4/30—Shape or construction of rollers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B30—PRESSES
  • B30B—PRESSES IN GENERAL
  • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing

Definitions

• the invention relates to a press roll for a roll press, in particular for briquetting, compacting or grinding of granular material, comprising a roll core and a roll shell circumferentially mounted on the roll core roll shell, which is composed of a plurality of circumferentially distributed segments with facing end faces, wherein the segments Have the end faces encircling clamping shoulders, wherein the segments frontally with at least one mounting ring (or clamping ring / clamping ring) are releasably secured to the roll core, which engages over the clamping shoulders of the segments and wherein the mounting ring is clamped by means of axially parallel clamping bolt against the segments is clamped.
• a press roll for a roll press for hot briquetting or hot compacting e.g. For hot briquetting or hot compacting directly reduced iron (DRI).
• Grainy material in the context of the invention also means dusty or powdery material.
• the (two) end faces of a segment are the end faces respectively facing the adjacent or following segment, which are aligned parallel to the axis and are spanned by the roll axis and roll radius and bounded by the outer diameter and the inner diameter of the segment.
• An end surface of a segment consequently faces an end face of the segment following in the circumferential direction.
• a roll press usually has two counter-rotating press rolls. When briquetting or compacting the granular bulk material is compacted between the rollers.
• the roll shell which is composed of the segments, equipped with pressing tools that can form cavities for briquetting or compacting equipped.
• the invention also includes press rolls with segments that with another
• Wear protection layer are provided, for. B. for crushing material.
• the press rolls are exposed to high temperatures by the material to be processed, so that even the segments themselves assume high temperatures. This applies z.
• the temperatures can be up to 900 ° C.
• the segments are usually subject to wear.
• Such press rolls or their coats are usually cooled, z. B. by means of water cooling. It has long been known, for. B. to integrate in the clamping rings of such a roller rotating cooling channels.
• the (tool) segments are usually subject to wear, they are detachable and thus interchangeably mounted on the roll core.
• the attachment is made with the help of bilateral mounting rings, which are also referred to as clamping rings or clamping rings and overlap the two-sided clamping shoulders of the segments.
• clamping rings or clamping rings are also referred to as clamping rings or clamping rings and overlap the two-sided clamping shoulders of the segments.
• a roll press for hot compacting and hot briquetting of bulk goods with press rolls with segments is known, for example, from US Pat. B. from DE 25 36 670 A1.
• the segments are provided with lugs or shoulders on which fasteners engage, with which the segments are mounted on the roll core.
• As a fastening means hinged mounted on the roll core clamps are provided in this prior art embodiment, which are pressed via a tie bolt against the segment.
• cooled shrink rings, radially arranged screws or the like are also proposed as fastening means.
• the attachment of the segments by means of fastening rings or clamping rings, which engage over the clamping shoulders of the segments, is also known from practice.
• the clamping shoulders usually have the same cross section over the entire peripheral region of the segment.
• the clamping bolts are arranged in the region of the end surfaces between two adjacent segments. For this purpose, suitable grooves are incorporated in the end surfaces, which receive the clamping bolts.
• the known embodiments have basically proven, but they are capable of further development in terms of their stability and durability. - This is where the invention starts.
• the invention has for its object to provide a press roller for a roller press of the type described above, which is characterized by a simple design and ease of installation by a high stability and durability of the segments, so that long service lives are guaranteed for the segments.
• the invention teaches in a generic press roll for a roll press of the type described above, that the segments each have at least one axially parallel opening for the clamping bolt, which is arranged with respect to the extension in the circumferential direction between the two end faces of the segment.
• the invention is based on the recognition that the stability and thus the service life of the segments can be increased if the clamping bolts, with which the two fastening rings are braced against each other with the interposition of the segments, not in the region of the end surfaces and consequently not between two together adjacent or successive segments are arranged, but when an opening for the clamping bolt is integrated into the segment, for. B. in the middle between the two
• End surfaces is arranged, and with respect to the extension in the circumferential direction.
• the clamping shoulders have in a basically known manner first clamping surfaces and the clamping ring has also known manner second clamping surfaces, ie the clamping surfaces of the clamping ring press in the course of assembly on the clamping surfaces of the clamping shoulders, so that the Segments are clamped on the roll core.
• first clamping surfaces and / or the second clamping surfaces for generating a radial clamping force in the course of bracing the axially parallel clamping bolt are oriented obliquely to the roller axis.
• the clamping forces applied in the axis-parallel direction are consequently reinforced in the radial direction, so that a perfect fixation of the segments on the roll core is ensured.
• the segments are also held in a form-fitting manner on the roll core.
• the segments on the inner circumference side and the roller core on the outer peripheral side suitable positive locking elements (projections
• the fastening ring preferably has a clamping collar that overlaps the clamping shoulders of the segments, wherein this clamping collar has the second clamping surfaces which rest against the first clamping surfaces of the clamping shoulders on the segments. Consequently, in a preferred embodiment, the clamping ring can consist of a completely encircling base ring and a clamping collar formed thereon and preferably likewise completely encircling, so that the clamping ring or fastening ring itself is L-shaped in cross section (essentially).
• clamping ring or its clamping collar is clamped with a completely circumferential (second) clamping surface against the likewise completely circumferential (first) clamping surfaces of the segments.
• a fastening ring which has locally limited clamping projections which are distributed over the circumference, so that each individual segment is associated with at least one locally limited clamping projection. Consequently, the clamping ring can have (eg in the region of the clamping collar) distributed over the circumference a plurality of clamping projections, each associated with a segment, which are provided, for example, in the region of the clamping collar. B. have the second clamping surfaces and extend only over part of the circumference of a segment.
• the segments have (outer) material reinforcements at their end faces in the end faces associated with the end faces edge regions which project radially outward in the radial direction and in relation to the first clamping face
• the invention is based on the recognition that the fastening ring does not have to be braced with the segments over the entire circumference, but rather that a locally limited tensioning with the help of z. B. the clamping projections described sufficient. In this case, it is then possible to equip the segments with additional material reinforcements and thus thickenings, since in these areas no clamping surfaces for a tension must be provided. In this way, the stability of the segments in the most critical areas can be significantly improved, so that the service life is further increased.
• the clamping ring consequently acts with its clamping projections only in a central region on the segments, wherein in this central region, the clamping bolts are positioned.
• the clamping ring consequently has an embodiment in the sense of a crown ring with crown-like clamping projections, which preferably project radially inward (ie in the direction of the roll axis) from the clamping collar and also in the axially parallel direction inwards (ie towards the segment) from the clamping ring or .
• whose base ring protrude Preferably, each segment or each pocket is assigned a projection of the clamping ring. But it can also engage more projections in a pocket.
• the above-described openings for the clamping bolts described in the introduction are preferably arranged between the described material reinforcements in the region of the pocket-like indentations.
• Another proposal of the invention relates to the design of the end surfaces of the segment. It has already been explained that grooves or the like for guiding the clamping bolts are dispensed with in the region of the end surfaces
• the one end surface of the segment z. B. a projection (nose) and the other end face of the segment has a corresponding recess / indentation (pocket), wherein the projection of a segment similar to a groove / spring connection engages in a corresponding indentation pocket of the adjacent or subsequent segment.
• This configuration which is similar to a tongue and groove joint, essentially relates to the central area of the end face. The end faces are consequently in the end face edge areas associated with the end faces, i. H.
• the subject matter of the invention is also a roll press with two press rolls of the type described.
• the press rolls essential to the invention are therefore particularly preferably provided in combination within a roll press under protection.
• Such a roller press may preferably be designed for briquetting and / or compacting granular material, in particular for hot briquetting / hot compacting.
• FIG. 1 is a schematically simplified view of a press roller in a perspective view
• Fig. 2 is a perspective detail of the article of FIG.
• FIG. 3 shows the object according to FIG. 2 in a side view
• FIG. 4 shows a segment according to the invention of the press roll according to FIG. 1 in a perspective representation
• FIG. 5 is a front side view of the article of FIG .. 4
• Fig. 1 shows a press roll for a roll press, in particular for briquetting or compacting and more preferably for hot briquetting or hot compacting granular material.
• a press roll consists in its basic structure of a roll core 1 and a roll shell mounted on the roll shell 1, which is composed of a plurality of circumferentially distributed segments 2, said segments 2 having axially parallel end surfaces 3.
• the segments 2 may be profiled on the outer peripheral side; In the exemplary embodiment, they have mold cavities 4 for briquetting or compaction. These molds / mold cavities 4 are integrally / integrally incorporated into the respective segment 2.
• Each segment 2 has an end face circumferential clamping shoulder 5.
• the two mounting rings 6 are clamped by means of axially parallel clamping bolt 7 against each other and thus against the arranged between the mounting rings segments 2.
• the clamping shoulders 5 in this case have first clamping surfaces 8 (FIG. 3) and the clamping ring 6 has second clamping surfaces 9.
• first clamping surface 8 and the second clamping surface 9 can be oriented obliquely to the roller axis.
• a positive connection between the segments 2 and the roll core 1 can be realized by z. B. on the inner circumference side (or the lower side) positive locking elements of the segments 2 engage in outer peripheral positive locking elements of the roller core 1 (and / or vice versa).
• the clamping of the segments 2 by means of the fastening ring 6, which is also referred to as a clamping or clamping ring, and the clamping bolt 7 in the illustrated embodiment is of particular importance.
• the fastening ring 6 is designed as a profiled ring in cross-section. On the one hand, it has a circumferential base ring 6a and, on the other hand, a peripheral clamping collar 6b, so that it has a substantially L-shaped cross section. This circumferential clamping collar 6b engages with the second clamping surfaces 9, the clamping shoulders 5 of the segments 2, so that the second clamping surfaces 9 of the clamping ring 6 against the first clamping surfaces 8 of the clamping shoulders 5 are pressed.
• the segments 2 each have an axially parallel opening 10, through which the clamping bolt 7 are passed.
• Refractions 10 are arranged relative to the extent in the circumferential direction in each case between the two end faces 3 of a segment 2.
• the opening 10 of a segment 2 is arranged centrally with respect to the extension in the circumferential direction between the two end surfaces 3 of this segment.
• the apertures 10 are configured as bores and they extend over the entire width of the segments 2, so that the clamping bolts completely pass through the segments. In this way, the two attachment rings 6 can be braced on both sides of the segments with the interposition of the segments 2.
• the clamping ring 6 is not formed in the embodiment over the entire circumference with a constant cross-section, but the clamping ring 6 has locally limited clamping projections 1 1 on.
• the clamping ring 6 thus has distributed over the circumference a plurality of, each segment 2 associated clamping projections 1 1, said clamping projections 1 1 each have the second clamping surfaces 9.
• the clamping projections 1 1 thus extend only over part of the arc length of a segment 2, so that the introduction of force from the clamping ring 6 is not full or full surface, but only locally limited in the region of the clamping projections 1 1.
• the segments 2 have at their end faces 12 and their clamping shoulders 5 (or in the transition region between the end face 12 and clamping shoulder 5) outer material reinforcements 13. These material reinforcements 13 are relative to the first clamping surface 8 in the radial direction and relative to the end face 12 in the axial direction outwards, so that in the circumferential direction between two material reinforcements 13 of a segment 2 each have a pocket-like indentation 14 is provided. In these pocket-like A formations 14, the first clamping surfaces 8 of the segments 2 are arranged, that is, the clamping ring 6 engages with its locally limited clamping projections 1 1 in
• the clamping ring 6 is thus formed like a crown.
• the second clamping surface 9 is realized on the underside, said second clamping surface 9 as well as the first clamping surface 8 of the segments 2 within the pockets 14 can be arranged obliquely relative to the roll axis 10.
• the one end face 3 of a segment 2 has a nose 15 protruding in the circumferential direction, 15 while the opposite end face 3 of the same segment 2 has a corresponding pocket 16 that springs back in the circumferential direction, so that the nose 16 of a segment is similar to a tongue and groove joint engages in the corresponding pocket 16 of the circumferentially adjacent segment.
• the end surfaces 3 are flat or planar and consequently configured without steps.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Food Science & Technology (AREA)
• Press Drives And Press Lines (AREA)
• Rolls And Other Rotary Bodies (AREA)
• Crushing And Grinding (AREA)
• Paper (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=50289681

Family Applications (1)

Country Status (11)

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• 2013
  • 2013-04-17 DE DE102013103884.0A patent/DE102013103884B3/de not_active Expired - Fee Related
  • 2013-09-23 SI SI201300286A patent/SI24354A2/sl active IP Right Grant
• 2014
  • 2014-03-19 EP EP14710908.6A patent/EP2986443A1/de not_active Withdrawn
  • 2014-03-19 CN CN201480021629.2A patent/CN105121146B/zh not_active Expired - Fee Related
  • 2014-03-19 KR KR1020157031543A patent/KR20150144765A/ko not_active Application Discontinuation
  • 2014-03-19 RU RU2015149191A patent/RU2634528C2/ru not_active IP Right Cessation
  • 2014-03-19 MX MX2015014440A patent/MX364236B/es active IP Right Grant
  • 2014-03-19 WO PCT/EP2014/055478 patent/WO2014170080A1/de active Application Filing
  • 2014-03-19 US US14/767,726 patent/US9744737B2/en not_active Expired - Fee Related
  • 2014-03-19 MY MYPI2015703388A patent/MY181096A/en unknown
  • 2014-03-19 JP JP2016508060A patent/JP6293263B2/ja not_active Expired - Fee Related

Non-Patent Citations (2)

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