EP3171980B1 - A roller with a segmented wear surface for crushing particulate material - Google Patents
A roller with a segmented wear surface for crushing particulate material Download PDFInfo
- Publication number
- EP3171980B1 EP3171980B1 EP15741494.7A EP15741494A EP3171980B1 EP 3171980 B1 EP3171980 B1 EP 3171980B1 EP 15741494 A EP15741494 A EP 15741494A EP 3171980 B1 EP3171980 B1 EP 3171980B1
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- European Patent Office
- Prior art keywords
- wear
- roller
- segments
- guiding means
- roller body
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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
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
- B02C4/305—Wear resistant rollers
Definitions
- the present invention relates to a roller for the crushing of particulate material, such as crude ore for use in the cement or minerals industries, by which a roller body is provided with a plurality of individual wear segments which are arranged on longitudinal guiding means and between clamps such that two or more of the wear segments are fixed to the same lateral section of one lateral portion of the roller body in a manner such that the frequency of, and cost associated with, the replacement of such wear segments is minimized.
- the invention also relates to the plurality of individual wear segments and to a method of manufacturing the roller.
- the roller may for example be used in a vertical roller mill, in a high-pressure grinding roller press, or in similar equipment for crushing of particulate material.
- grinding rollers without wear segments were required to be replaced every three to eight months (depending on the tip speed of the grinding rollers) because of excessive wear due to the impact of the grinding media and particulate against the rollers within the housing.
- Such a replacement process was (and is) time consuming. For example, it can take four to six hours or more to replace grinding rollers in a grinding mill, and a full change-out of all grinding rollers (albeit, seldom necessary) takes approximately sixteen hours or more.
- These time-consuming repair processes if performed too often, may result in losses such as superfluous operational downtime, increased labor costs, and reduced throughput. If the repair process is performed too infrequently, other expensive losses such as shaft failure, inefficient grinding, and/or further degradation of intact grinding rollers or mill components may be incurred.
- grinding rollers were typically very costly. For example, when an exotic high end wear surface was implemented, the entire roller was required to be fabricated out of the exotic high-end material.
- segmented crushing rollers were implemented. Such segmented crushing rollers also allowed for intermittent use of exotic high end wear segments (i.e. - using an exotic high end wear segment in one wear segment and not another).
- Examples of patents/applications that describe rollers having the outer circumference of the roller body covered with segmented wear segments are found in, for example, EP 2703085 , DE 197 09 263 A1 , US 5,253,816 and US 5,860,609 . In each of the foregoing patents/applications the rollers are arranged laterally on the roller body (i.e.
- the wear segments are arranged laterally on the circumference of the grinding roller so that a wear segment spans an entire lateral portion of the grinding roller).
- the foregoing design is not advantageous because it still results in a time-consuming repair process and may result in losses such as superfluous operational downtime, increased labor and material costs, and reduced throughput.
- the non-uniform wear will also result in non-optimal production and an increase in energy.
- a new type of crushing roller, and wear segments therefor are needed in order to reduce costs and time associated with the frequent repair and/or replacement of premature segmented discs.
- a new type of crushing roller, and wear segments therefor are needed in order to maintain a uniform wear across the full width of roller segments (in the lateral direction).
- such new type of crushing rollers will allow for easy replacement or refurbishment when the outer half of wear segments (i.e. - the wear segments which are typically the most worn) need replacement and will provide for uniform wear in order to achieve and maintain optimum production and minimize the loss of energy throughout the life of the wear segments.
- a roller for crushing particulate material comprises a roller body 2 having a center axis 3, a plurality of wear segments 4, 5, having crushing surfaces that are fixed to said roller body 2; a plurality of clamps 7, 8 disposed on the sides of said roller body 2; said roller is characterized in a guiding means 6 disposed on said roller body 2 between said clamps 7, 8; wherein said guiding means 6 run longitudinally about the circumference of said roller body, and wherein said wear segments 4, 5 are arranged on said guiding means 6 such that two or more of said wear segments are fixed to the same lateral section of one lateral portion of said roller body.
- the plurality of wear segments 4, 5 can include grooves 11 and knobs 12, the grooves 11 and knobs 12 cooperating with the guiding means 6 to fix the plurality of wear segments 4, 5 to the roller body 2.
- the roller 1 can also comprise a plurality of keys 10, the plurality of keys 10 being fixed to the roller body 2.
- the plurality of wear segments 4, 5 can also be comprised of keyways 13, the keyways 13 cooperating with the plurality of keys 10 to prevent the plurality of wear segments 4, 5 from moving in the longitudinal direction.
- the plurality of wear segments 4, 5 can also include projections 14, 15.
- a wear segment 4 is provided for arrangement on longitudinal guiding means 6 of a roller for crushing particulate material, said wear segmentcomprises a groove 11 and a knob 12, wherein said groove 11 is configured to accept a longitudinal guiding means 6 and wherein said knob 12 is configured to extend at least partially over a portion of said guiding means 6, said wear segment further comprises a plurality of keyways 13, said keyways 13 cooperating with keys 10 on a roller body to prevent said wear segment 4 from moving in the longitudinal direction.
- the wear segment 4 can also include projections 14, 15 disposed on the knobs 12 of the longitudinal side of the wear segments 4, 5 that face the longitudinal guiding means 6
- a method for manufacturing a roller 1 for crushing particulate material is also provided.
- the method comprises the steps of: affixing a plurality of wear segments 4, 5 to a roller body 2 having a center axis 3 by arranging said wear segments 4, 5 on longitudinal guiding means 6 and disposing said wear segments 4, 5 between a plurality of clamps 7, 8 such that two or more of said wear segments are fixed to the same lateral section of one lateral portion of said roller body; and tightening at least one of said plurality of clamps 7, 8 so that a first longitudinal side of wear segment 4 abuts guiding means 6 and a first longitudinal side of wear segment 5; a second longitudinal side of wear segment 4 abuts plurality of clamps 7 and a second longitudinal side of wear segment 5 abuts plurality of clamps 8.
- the method may also include additional steps as further described herein.
- a roller 1 for crushing particulate material has a roller body 2 which has a center axis 3 extending laterally through the center shaft of the roller body 2.
- the outer circumference of the roller body 2 is provided with a plurality of individual wear segments 4, 5; the plurality of wear segments 4, 5 having crushing surfaces.
- the plurality of wear segments 4, 5 may have different crushing surfaces.
- wear segment 5 can be made of an exotic, high end wear surface, for example a ceramic or another hard cast or forged material, without limitation; and wear segment 4 can be made of a traditional wear surface (for example, cast iron, austempered ductile iron, carbidic austempered ductile iron or polyurethane).
- the crushing surface of the wear segments 4, 5 may be PTA, hard-faced, sintered, hipped or may have studs (made of for example, tungsten carbide) embedded therein to increase the service life of the plurality of wear segments 4, 5.
- the plurality of wear segments 4, 5 are fixed to the roller body 2.
- the roller has a plurality of clamps 7, 8 which are disposed on the longitudinal (i.e. - when the roller 1 is viewed in an orientation where the center axis 3 runs laterally through the center shaft of said roller body 2) sides of the roller body 2.
- the roller 1 has guiding means 6 disposed on the roller body 2 between the plurality of clamps 7, 8 which are disposed on the longitudinal sides of the roller body 2.
- Guiding means 6 run longitudinally (i.e. - when the roller 1 is viewed in an orientation where the center axis 3 runs laterally through the center shaft of said roller body 2) (also referred to herein as “longitudinal guiding means” or simply “guiding means”) about the circumference of the roller body 2.
- the guiding means 6 is substantially parallel to plurality of clamps 7 and plurality of clamps 8.
- the position of longitudinal guiding means 6 is determined by the regular wear pattern for a particular grinding roller application.
- the wear pattern of a grinding roller application shows that wear is greater on the left longitudinal 2/3 of the grinding roller
- guiding means 6 may be disposed 2/3 from the left longitudinal side of the grinding roller.
- Such orientation allows for placement of high end exotic wear segments to be placed in the area where wear is the greatest and for utilization of a conventional wear segments in the remaining 1/3.
- Such an arrangement allows for a uniform wear profile.
- the guiding means 6 is a single uniform piece. In other embodiments the guiding means 6 are multiple pieces. Guiding means 6 are typically wedge shaped but can also be substantially rectangular in shape. Guiding means 6 may be composed of a high strength or low alloy steel, for example CrMo, without limitation.
- the guiding means 6 is floating (i.e. - it is not affixed to the roller body 2 by a fastening means).
- the guiding means 6 are fixed to the roller body 2 by a fastening means 9, in this case, for example, radially located screws.
- the roller body 2 may have two or more guiding means 6 which are disposed on the roller body 2 between the plurality of clamps 7, 8 which are disposed on the longitudinal sides of the roller body 2.
- Each of the two or more guiding means 6 run longitudinally (i.e. - when the roller 1 is viewed in an orientation where the center axis 3 runs laterally through the center shaft of said roller body 2) about the circumference of the roller body 2.
- the position of the division of the two or more guiding means 6 is determined by the regular wear pattern for the grinding roller application.
- one of said plurality of clamps 7 is fixed and another of said plurality of clamps 8 is movable.
- the plurality of wear segments 4, 5 are arranged on longitudinal guiding means 6.
- three or more longitudinal wear segments 4, 5 can be laterally aligned, meaning that the three or more longitudinal wear segments may be fixed to the same lateral section of one lateral portion of the roller body 2.
- the three or more wear segments can have different wear surfaces. Because of the longitudinal guiding means 6, the wear segments 4, 5 can be smaller and lower in weight, as opposed to if the guiding means was to run laterally. Additionally, by arranging the wear segments 4, 5 on a longitudinal guiding means 6, a longitudinal half of the wear segment (i.e. - 5) can be replaced without replacing its corresponding longitudinal half of wear segment (i.e. - 4).
- This arrangement is advantageous because wear profiles of certain grinding mills have shown that one longitudinal side of the roller surface wears more heavily than the other side.
- Such an arrangement allows the reduction of the initial costs associated with wear parts (i.e. - allowing for exotic wear parts to be used on only one longitudinal half) and allows for the amount of scrapped material to be reduced when repair is necessary.
- Such an arrangement promotes uniform wear across lateral subsections of the roller allowing for more efficient grinding and lower energy consumption. This arrangement also translates to less operational downtime, decreased labor costs and increased throughput.
- a wear segment 4 is arranged adjacent to the wear segment 5 so that when the roller body 2 is viewed so that the roller 1 is in an orientation so that the center axis 3 extends laterally through the center shaft of the roller body 2, a first long side of a wear segment 4 abuts a first long side of the wear segment 5, a second long side of the wear segment 4 abuts a clamp 7 and the second long side of the wear segment 5 abuts a clamp 8.
- the plurality of wear segments 4, 5 have grooves 11 and knobs 12.
- the grooves 11 and knobs 12 cooperate with longitudinal guiding means 6 in order to fix the plurality of wear segments 4, 5 to the roller body 2.
- the knob 12 of a wear segment 5 abuts the knob 12 of a wear segment 4 and the longitudinal guiding means 6 extends into the grooves 11 of wear segment 5 and wear segment 4.
- keys 10 may be disposed on the roller body 2. Keys 10 are configured to prevent longitudinal shifting of the wear segments 4, 5.
- the wear segments 4, 5 have keyways 13, wherein the keys 10 interlock with the keyways 13 to further prevent the longitudinal shift of the wear segments 4, 5.
- shearing pins 16 may be disposed on the roller body 2. Shearing pins 16 are configured to prevent shifting of the wear segments 4, 5.
- the wear segments 4, 5 have pin holes 17, wherein the shearing pins 16 interlock with the pin holes 17 to further prevent the shift of the wear segments 4, 5.
- the wear segments 4, 5 have mating male projections 14 and/or female projections 15. The projections 14, 15 are disposed on the knobs 12 of the longitudinal side of the wear segments 4, 5 that face the longitudinal guiding means 6.
- the wear segments 4, 5 are arranged on longitudinal guiding means 6.
- the plurality of wear segments 4, 5 are fixed to the roller body 2 by the plurality of clamps 7, 8.
- Fasteners such as the axially arranged screw connections tighten the clamps 7, 8 and fix the wear segments 4, 5 to the roller body 2.
- a normal force is applied to the wear segments 4, 5 and guiding means 6, the wear segments are forced against the guiding means 6 and the clamps 7, 8 and the guiding means 6 are tensioned whereby such tension and force stop the wear segments 4, 5 from further movement in the lateral direction.
- the wear segments 4, 5 have mating male projections 14 and/or female projections 15 the tension and force also act to interlock the projections 14, 15 and stop the wear segments from further movement in the longitudinal direction.
- the guiding means 6 acts like an internal floating clamp.
- the wear segments 4, 5 may contain knotches disposed on the longitudinal side of the wear segments 4, 5 that face the clamps 7, 8. The knotches cooperate with the clamps 7, 8 to create a tight fit and to further secure the plurality of wear segments 4, 5 to the roller body 2.
- a method for manufacturing a roller 1 according to the invention is also disclosed.
- wear segments 4, 5 are arranged on a roller body 2 on longitudinal guiding means 6 and between a plurality of clamps 7, 8.
- the plurality of clamps 7, 8 are tightened forcing a first longitudinal side of a wear segment 4 to abut guiding means 6 and a first longitudinal side of wear segment 5; a second longitudinal side of wear segment 4 to abut the plurality of clamps 7 and a second longitudinal side of wear segment 5 to abut plurality of clamps 8.
- keys 10 are fixed on the roller body and wear segments 4, 5 with keyways 13 are arranged on a roller body 2 on longitudinal guiding means 6 and between a plurality of clamps 7, 8.
- the plurality of clamps 7, 8 are tightened forcing a first longitudinal side of a wear segment 4 to abut guiding means 6 and a first longitudinal side of wear segment 5; a second longitudinal side of wear segment 4 to abut the plurality of clamps 7 and a second longitudinal side of wear segment 5 to abut plurality of clamps 8.
- the wear segments 4, 5 have mating male projections 14 and/or female projections 15 the tightening interlocks the projections 14, 15 of a plurality of wear segments 4, 5.
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Description
- The present invention relates to a roller for the crushing of particulate material, such as crude ore for use in the cement or minerals industries, by which a roller body is provided with a plurality of individual wear segments which are arranged on longitudinal guiding means and between clamps such that two or more of the wear segments are fixed to the same lateral section of one lateral portion of the roller body in a manner such that the frequency of, and cost associated with, the replacement of such wear segments is minimized. The invention also relates to the plurality of individual wear segments and to a method of manufacturing the roller.
- The roller may for example be used in a vertical roller mill, in a high-pressure grinding roller press, or in similar equipment for crushing of particulate material.
- Historically, grinding rollers without wear segments (or grinding rollers with a uniform, one-piece wear piece) were required to be replaced every three to eight months (depending on the tip speed of the grinding rollers) because of excessive wear due to the impact of the grinding media and particulate against the rollers within the housing. Such a replacement process was (and is) time consuming. For example, it can take four to six hours or more to replace grinding rollers in a grinding mill, and a full change-out of all grinding rollers (albeit, seldom necessary) takes approximately sixteen hours or more. These time-consuming repair processes, if performed too often, may result in losses such as superfluous operational downtime, increased labor costs, and reduced throughput. If the repair process is performed too infrequently, other expensive losses such as shaft failure, inefficient grinding, and/or further degradation of intact grinding rollers or mill components may be incurred.
- Additionally, such grinding rollers were typically very costly. For example, when an exotic high end wear surface was implemented, the entire roller was required to be fabricated out of the exotic high-end material.
- To reduce wear and to reduce the frequency of change-outs of grinding rollers, segmented crushing rollers were implemented. Such segmented crushing rollers also allowed for intermittent use of exotic high end wear segments (i.e. - using an exotic high end wear segment in one wear segment and not another). Examples of patents/applications that describe rollers having the outer circumference of the roller body covered with segmented wear segments are found in, for example,
EP 2703085 ,DE 197 09 263 A1 ,US 5,253,816 andUS 5,860,609 . In each of the foregoing patents/applications the rollers are arranged laterally on the roller body (i.e. - when the roller is viewed in the longitudinal direction so that the center axis of the rollers extends laterally through the center shaft of the roller body, the wear segments are arranged laterally on the circumference of the grinding roller so that a wear segment spans an entire lateral portion of the grinding roller). - When such segmented rollers are used in high pressure grinding applications, pressure build-up between neighboring segments will promote movement of the segments. Initially such movements will be small but after a period of time the movements will become significant and may eventually result in damage to the segments, the clamps or even the roller body. As a consequence hereof, such segments, clamps, roller surfaces or roller body must be repaired meaning that the entire grinding circuit often must be taken out of operation, which is very costly. As a result, numerous attempts have been made to make the gaps between wear segments non-existent and as small as possible.
- For example, in
US 2014/0158801 , such gaps are minimized or eliminated. InUS 2014/0158801 , when the roller is viewed in the longitudinal direction so that the center axis of the rollers extends laterally through the center shaft of the roller body, the wear segments are arranged laterally on the circumference of the grinding roller so that a wear segment spans a single lateral portion of the grinding roller. However, in such an arrangement, when the outer half of a wear segments is worn down (which is typical in, for example, vertical roller mills) the entire wear segment is required to be replaced or refurbished. Moreover, in such an arrangement there is a non-uniform wear pattern which results in less efficient grinding and a loss of energy. Therefore, the foregoing design is not advantageous because it still results in a time-consuming repair process and may result in losses such as superfluous operational downtime, increased labor and material costs, and reduced throughput. The non-uniform wear will also result in non-optimal production and an increase in energy.
I have determined that a new type of crushing roller, and wear segments therefor, are needed in order to reduce costs and time associated with the frequent repair and/or replacement of premature segmented discs. Additionally, a new type of crushing roller, and wear segments therefor, are needed in order to maintain a uniform wear across the full width of roller segments (in the lateral direction). Preferably, such new type of crushing rollers will allow for easy replacement or refurbishment when the outer half of wear segments (i.e. - the wear segments which are typically the most worn) need replacement and will provide for uniform wear in order to achieve and maintain optimum production and minimize the loss of energy throughout the life of the wear segments. - A roller for crushing particulate material comprises a
roller body 2 having acenter axis 3, a plurality ofwear segments roller body 2; a plurality ofclamps roller body 2; said roller is characterized in a guidingmeans 6 disposed on saidroller body 2 between saidclamps wear segments means 6 such that two or more of said wear segments are fixed to the same lateral section of one lateral portion of said roller body. The plurality ofwear segments grooves 11 andknobs 12, thegrooves 11 andknobs 12 cooperating with the guidingmeans 6 to fix the plurality ofwear segments roller body 2. Theroller 1 can also comprise a plurality ofkeys 10, the plurality ofkeys 10 being fixed to theroller body 2. The plurality ofwear segments keyways 13, thekeyways 13 cooperating with the plurality ofkeys 10 to prevent the plurality ofwear segments wear segments projections - A
wear segment 4 is provided for arrangement onlongitudinal guiding means 6 of a roller for crushing particulate material, said wear segmentcomprises agroove 11 and aknob 12, wherein saidgroove 11 is configured to accept alongitudinal guiding means 6 and wherein saidknob 12 is configured to extend at least partially over a portion of said guidingmeans 6, said wear segment further comprisesa plurality ofkeyways 13, saidkeyways 13 cooperating withkeys 10 on a roller body to prevent saidwear segment 4 from moving in the longitudinal direction.
Thewear segment 4 can also includeprojections knobs 12 of the longitudinal side of thewear segments roller 1 for crushing particulate material is also provided. The method comprises the steps of: affixing a plurality ofwear segments roller body 2 having acenter axis 3 by arranging saidwear segments longitudinal guiding means 6 and disposing saidwear segments clamps clamps wear segment 4 abuts guiding means 6 and a first longitudinal side ofwear segment 5; a second longitudinal side ofwear segment 4 abuts plurality ofclamps 7 and a second longitudinal side ofwear segment 5 abuts plurality ofclamps 8.
In some embodiments of the method, the method may also include additional steps as further described herein. - Other details, objects, and advantages of the invention will become apparent as the following description of certain present exemplary embodiments thereof and certain present exemplary methods of practicing the same proceeds.
- Present embodiments of a roller for the crushing of particulate material are shown in the accompanying drawings.
-
Figure 1 shows a three-dimensional model of a roller according to an exemplary embodiment of the invention. -
Figure 2 shows a cross-sectional view of a roller according to an exemplary embodiment of the invention. -
Figure 3 shows an exploded three-dimensional view of a roller according to an exemplary embodiment of the invention. -
Figure 4 shows a three-dimensional model of a roller according to another exemplary embodiment of the invention. -
Figure 5 shows a cross-sectional view of a roller according to another exemplary embodiment of the invention. -
Figure 6 shows a bottom angled view of a wear segment according to an exemplary embodiment of the invention. -
Figure 7 shows a cross-sectional view of a roller according to another exemplary embodiment of the invention. - Referring to
Figures 1 through 5 , aroller 1 for crushing particulate material has aroller body 2 which has acenter axis 3 extending laterally through the center shaft of theroller body 2. The outer circumference of theroller body 2 is provided with a plurality ofindividual wear segments wear segments wear segments wear segment 5 can be made of an exotic, high end wear surface, for example a ceramic or another hard cast or forged material, without limitation; andwear segment 4 can be made of a traditional wear surface (for example, cast iron, austempered ductile iron, carbidic austempered ductile iron or polyurethane). The crushing surface of thewear segments wear segments - The plurality of
wear segments roller body 2. The roller has a plurality ofclamps roller 1 is viewed in an orientation where thecenter axis 3 runs laterally through the center shaft of said roller body 2) sides of theroller body 2. Theroller 1 has guidingmeans 6 disposed on theroller body 2 between the plurality ofclamps roller body 2. - Guiding means 6 run longitudinally (i.e. - when the
roller 1 is viewed in an orientation where thecenter axis 3 runs laterally through the center shaft of said roller body 2) (also referred to herein as "longitudinal guiding means" or simply "guiding means") about the circumference of theroller body 2. - In one embodiment, the guiding
means 6 is substantially parallel to plurality ofclamps 7 and plurality ofclamps 8. However, the position of longitudinal guiding means 6 is determined by the regular wear pattern for a particular grinding roller application. By way of example, if the wear pattern of a grinding roller application shows that wear is greater on the left longitudinal 2/3 of the grinding roller, guidingmeans 6 may be disposed 2/3 from the left longitudinal side of the grinding roller. Such orientation allows for placement of high end exotic wear segments to be placed in the area where wear is the greatest and for utilization of a conventional wear segments in the remaining 1/3. Such an arrangement allows for a uniform wear profile. - As shown in
Figure 3 , in one embodiment the guidingmeans 6 is a single uniform piece. In other embodiments the guiding means 6 are multiple pieces. Guiding means 6 are typically wedge shaped but can also be substantially rectangular in shape. Guiding means 6 may be composed of a high strength or low alloy steel, for example CrMo, without limitation. - In one embodiment, the guiding means 6 is floating (i.e. - it is not affixed to the
roller body 2 by a fastening means). However, as depicted inFigure 5 , in another embodiment the guiding means 6 are fixed to theroller body 2 by a fastening means 9, in this case, for example, radially located screws. - In one embodiment, the
roller body 2 may have two or more guiding means 6 which are disposed on theroller body 2 between the plurality ofclamps roller body 2. Each of the two or more guiding means 6 run longitudinally (i.e. - when theroller 1 is viewed in an orientation where thecenter axis 3 runs laterally through the center shaft of said roller body 2) about the circumference of theroller body 2. The position of the division of the two or more guiding means 6 is determined by the regular wear pattern for the grinding roller application. - In one embodiment, one of said plurality of
clamps 7 is fixed and another of said plurality ofclamps 8 is movable. - The plurality of
wear segments longitudinal wear segments roller body 2. The three or more wear segments can have different wear surfaces. Because of the longitudinal guiding means 6, thewear segments wear segments - When the plurality of
wear segments roller body 2, in one embodiment, awear segment 4 is arranged adjacent to thewear segment 5 so that when theroller body 2 is viewed so that theroller 1 is in an orientation so that thecenter axis 3 extends laterally through the center shaft of theroller body 2, a first long side of awear segment 4 abuts a first long side of thewear segment 5, a second long side of thewear segment 4 abuts aclamp 7 and the second long side of thewear segment 5 abuts aclamp 8. - As may be appreciated from
Figures 2 ,5 and6 , in an exemplary embodiment, the plurality ofwear segments grooves 11 and knobs 12. Thegrooves 11 andknobs 12 cooperate with longitudinal guiding means 6 in order to fix the plurality ofwear segments roller body 2. In an exemplary embodiment, theknob 12 of awear segment 5 abuts theknob 12 of awear segment 4 and the longitudinal guiding means 6 extends into thegrooves 11 ofwear segment 5 and wearsegment 4. - As shown in for example
Figures 2 and3 , in an exemplary embodiment,keys 10 may be disposed on theroller body 2.Keys 10 are configured to prevent longitudinal shifting of thewear segments Figure 6 , thewear segments keyways 13, wherein thekeys 10 interlock with thekeyways 13 to further prevent the longitudinal shift of thewear segments - In an alternative embodiment, as shown in
Figure 7 , shearing pins 16 may be disposed on theroller body 2. Shearing pins 16 are configured to prevent shifting of thewear segments Figure 7 , thewear segments wear segments Figure 6 , in an exemplary embodiment, thewear segments male projections 14 and/orfemale projections 15. Theprojections knobs 12 of the longitudinal side of thewear segments - As shown in
Figures 2 ,3 and5 , thewear segments wear segments roller body 2 by the plurality ofclamps clamps wear segments roller body 2. For example, when the fasteners on theclamps wear segments clamps wear segments wear segments male projections 14 and/orfemale projections 15 the tension and force also act to interlock theprojections - In an exemplary embodiment the
wear segments wear segments clamps clamps wear segments roller body 2. - A method for manufacturing a
roller 1 according to the invention is also disclosed. In an exemplary embodiment, wearsegments roller body 2 on longitudinal guiding means 6 and between a plurality ofclamps clamps wear segment 4 to abut guiding means 6 and a first longitudinal side ofwear segment 5; a second longitudinal side ofwear segment 4 to abut the plurality ofclamps 7 and a second longitudinal side ofwear segment 5 to abut plurality ofclamps 8. - In another exemplary embodiment of a method for manufacturing a
roller 1 according to the invention,keys 10 are fixed on the roller body and wearsegments keyways 13 are arranged on aroller body 2 on longitudinal guiding means 6 and between a plurality ofclamps clamps wear segment 4 to abut guiding means 6 and a first longitudinal side ofwear segment 5; a second longitudinal side ofwear segment 4 to abut the plurality ofclamps 7 and a second longitudinal side ofwear segment 5 to abut plurality ofclamps 8. When thewear segments male projections 14 and/orfemale projections 15 the tightening interlocks theprojections wear segments - It is to be understood that the form of this invention as shown is merely a preferred embodiment. Various changes may be made in the function and arrangement of parts; equivalent means may be substituted for those illustrated and described; and certain features may be used independently from others without departing from the scope of the invention as defined in the following claims.
Claims (8)
- A roller (1) for crushing particulate material comprising:a roller body (2) having a center axis (3);a plurality of wear segments (4, 5) having crushing surfaces that are fixed to said roller body 2;a plurality of clamps (7, 8) disposed on the sides of said roller body (2); characterized bya guiding means (6) disposed on said roller body 2 between said clamps (7, 8);wherein said guiding means (6) run longitudinally about the circumference of said roller body (2) and wherein said wear segments (4, 5) are arranged on said guiding means (6) such that two or more of said wear segments (4, 5) are fixed to the same lateral section of one lateral portion of said roller body (2).
- A roller (1) for crushing particulate material as in claim 1 wherein said plurality of wear segments (4, 5) are comprised of grooves (11) and knobs (12), said grooves (11) and knobs (12) cooperating with said guiding means (6) to fix said plurality of wear segments (4, 5) to said roller body (2).
- A roller (1) for crushing particulate material as in claim 1 or 2 further comprising a plurality of keys (10), said plurality of keys (10) being fixed to said roller body (2).
- A roller (1) for crushing particulate material as in any of the preceding claims wherein said plurality of wear segments (4, 5) are further comprised of keyways (13), said keyways (13) cooperating with said plurality of keys (10) to prevent said plurality of wear segments (4, 5) from moving in the longitudinal direction.
- A roller (1) for crushing particulate material as in any of the preceding claims wherein said plurality of wear segments 4, 5 are further comprised of projections (14, 15).
- A wear segment (4) for arrangement on longitudinal guiding means (6) of a roller for crushing particulate material comprising: a groove (11) and a knob (12), wherein said groove (11) is configured to accept a longitudinal guiding means (6) and wherein said knob (12) is configured to extend at least partially over a portion of said guiding means (6), and further comprising a plurality of keyways (13), said keyways (13) cooperating with keys (10) on a roller body to prevent said wear segment (4) from moving in the longitudinal direction..
- A wear segment (4) as in claim 6 further comprising: projections (14, 15) disposed on said knobs (12) of the longitudinal side of the wear segments (4, 5) that face the longitudinal guiding means (6).
- A method for manufacturing a roller (1) for crushing particulate material, comprising the steps of:affixing a plurality of wear segments (4, 5) to a roller body (2) having a center axis (3), by arranging said wear segments (4, 5) on longitudinal guiding means (6) and disposing said wear segments (4, 5) between a plurality of clamps (7, 8) such that two or more of said wear segments (4, 5) are fixed to the same lateral section of one lateral portion of said roller body (2); andtightening at least one of said plurality of clamps (7, 8) so that a first longitudinal side of wear segment (4) abuts guiding means (6) and a first longitudinal side of wear segment (5); a second longitudinal side of wear segment (4) abuts plurality of clamps (7) and a second longitudinal side of wear segment (5) abuts plurality of clamps (8).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DKPA201470463 | 2014-07-25 | ||
PCT/DK2015/050224 WO2016012028A1 (en) | 2014-07-25 | 2015-07-22 | A roller with a segmented wear surface for crushing particulate material |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3171980A1 EP3171980A1 (en) | 2017-05-31 |
EP3171980B1 true EP3171980B1 (en) | 2018-08-29 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP15741494.7A Active EP3171980B1 (en) | 2014-07-25 | 2015-07-22 | A roller with a segmented wear surface for crushing particulate material |
Country Status (3)
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EP (1) | EP3171980B1 (en) |
CN (1) | CN106573246B (en) |
WO (1) | WO2016012028A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107020179A (en) * | 2017-05-29 | 2017-08-08 | 肇庆市思睿力机器人科技有限公司 | One kind improvement ore crusher roller tooth |
CN111570013B (en) * | 2020-05-28 | 2022-05-24 | 中钢天源股份有限公司 | Roller structure of roller press embedded with hard alloy stud |
CN112871274B (en) * | 2020-12-22 | 2022-06-17 | 周文兵 | Crusher double-roller and industrial stone crusher |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5253816A (en) | 1989-07-20 | 1993-10-19 | Krupp Polysius Ag | Material crushing roller construction |
DE19638237A1 (en) | 1996-09-19 | 1998-03-26 | Deutz Ag | Wear-resistant surface armor for the rollers of high-pressure roller presses for pressure reduction of granular goods |
DE19709263A1 (en) | 1997-03-06 | 1998-09-10 | Krupp Polysius Ag | Roller for grinding mill |
DE102007032261A1 (en) * | 2007-07-11 | 2009-01-15 | Khd Humboldt Wedag Gmbh | Roller for high-pressure press e.g. for comminuting granular materials, has roller wall forming outer region composed of discrete segments fixed on main body |
CA2828054A1 (en) | 2011-02-23 | 2012-08-30 | Flsmidth A/S | Crushing roller |
JP5782986B2 (en) * | 2011-10-21 | 2015-09-24 | 三菱マテリアル株式会社 | Crushing device and crushed material manufacturing method |
CN202516605U (en) * | 2011-12-23 | 2012-11-07 | 黑龙江昱泰重型机器制造有限公司 | Multi-section combined tooth roller |
EP2703085A1 (en) | 2012-08-29 | 2014-03-05 | Metso Brasil Industria e Comercio Ltda | Roll for a roller grinder, and roller grinder comprising such roll |
CN203448136U (en) * | 2013-08-30 | 2014-02-26 | 绵阳金鼎机电技术有限公司 | High-precision wear-resisting pin roll easy to be integrally detached |
CN203508084U (en) * | 2013-09-18 | 2014-04-02 | 四川旭虹光电科技有限公司 | Rounded press roller |
-
2015
- 2015-07-22 EP EP15741494.7A patent/EP3171980B1/en active Active
- 2015-07-22 WO PCT/DK2015/050224 patent/WO2016012028A1/en active Application Filing
- 2015-07-22 CN CN201580041099.2A patent/CN106573246B/en active Active
Also Published As
Publication number | Publication date |
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CN106573246B (en) | 2020-03-03 |
CN106573246A (en) | 2017-04-19 |
EP3171980A1 (en) | 2017-05-31 |
WO2016012028A1 (en) | 2016-01-28 |
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