EP3408030A1 - Organe d'accélération pour concasseur à percussion à arbre vertical - Google Patents

Organe d'accélération pour concasseur à percussion à arbre vertical

Info

Publication number
EP3408030A1
EP3408030A1 EP17710661.4A EP17710661A EP3408030A1 EP 3408030 A1 EP3408030 A1 EP 3408030A1 EP 17710661 A EP17710661 A EP 17710661A EP 3408030 A1 EP3408030 A1 EP 3408030A1
Authority
EP
European Patent Office
Prior art keywords
accelerating
face
along
insert
parts
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.)
Granted
Application number
EP17710661.4A
Other languages
German (de)
English (en)
Other versions
EP3408030B1 (fr
Inventor
Johannes Petrus Andreas Josephu Van Der Zanden
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.)
Van Der Meer Willem Ronald Hans
Original Assignee
Van Der Meer Willem Ronald Hans
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 Van Der Meer Willem Ronald Hans filed Critical Van Der Meer Willem Ronald Hans
Publication of EP3408030A1 publication Critical patent/EP3408030A1/fr
Application granted granted Critical
Publication of EP3408030B1 publication Critical patent/EP3408030B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C13/1814—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed on top of a disc type rotor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor

Definitions

  • the present invention relates to the constructional design for an accelerating member for an open rotor provided with an acceleration face constructed partly of base material sections and partly highly wear resistant insert members to achieve a long useful lifetime in condition of heavy wear and dynamic loading, more specific, to be applied for centrifugal acceleration of abrasive particle material in a vertical shaft impact crusher.
  • Wear poses a major problem with construction, demolition, recycling, quarrying and mining, and many other industries. Wear parts are expensive and have to be frequently exchanged, which is labour intensive, and time consuming causing long downtime, and exchange is often dangerous due to complicated attachment and high lifting weight, causing much injury.
  • the vertical shaft impact crusher is popular for the production of high quality aggregates for asphalt and concrete, and is known from US 4, 174,814 (Warren) and US 4,699,326 (Warren).
  • the material is fed onto the central part of a rotor that rotates rapidly about a vertical axis of rotation and is provided with accelerating members, often called shoes, for accelerating of the particle material with the aid of centrifugal force along a radially directed accelerating face, to be thrown at high velocity from the rotor to collide with the impact faces of impact members, often called anvils, surrounding the rotor, to be crushed during impact against the impact faces.
  • the problem with the lifting weight may be solved by horizontally splitting of the shoe accelerating member into two parts, a technique known from WO2014082722, which is in the name of applicant.
  • US 3,474,974 proposes an accelerating member for a closed rotor, horizontally split into three or four plate parts positioned on top of each other on the assumption that wear concentrates along the center plate, providing the upper and lower plates a much longer useful lifetime, which assumption is however not really practical because the wear channel extends into the adjacent plate parts.
  • the plate parts are attached either with a pin member stretching throughout the plate parts, or centrifugally locked, in both case clamped between two rotor blades.
  • Another approach is to provide the accelerating face with hard metal insert members; that is, a base member of a strong metal alloy, typically a steel alloy, that is provided with hard metal insert members along the accelerating face.
  • hard metal insert members that is, a base member of a strong metal alloy, typically a steel alloy, that is provided with hard metal insert members along the accelerating face.
  • First attempts in 1973 apply rectangular insert members positioned next to other each other, creating an acceleration face of inserted vertical columns of hard metal, alternating with columns of base material in between, known from US 3,767, 127 (Wood discussed before) involving a closed rotor - and proposes also horizontal splitting of the accelerating member.
  • US 4,871,1 19 proposes a metal base member parts provided with accelerating face parts provided with hard metal plate elements, which hard metal acceleration block parts are shrewd to a base member. The plate element is attached by brazing and provides complete hard metal coverage of the accelerating face, which proved to be far too heavy and extremely expensive, and therefore impractical.
  • a metal or cast iron base member provides a accelerating face partial of base material and partial of hard metal insert members, either separately attached in insert openings of a metal base member or with hard metal insert members and/or hard metal particles integrally cast-in with the base member.
  • US 4,787,564 discloses an accelerating face partial of base face and partial of inserted hard metal member rod like pallets, wherein the shoe may be provided with a separate, possibly removable, wear plate that provides the accelerating face with cast-in hard metal elements, for easy manufacturing; but hard metal is extremely heavy and very expensive, and great hardness goes hand in had with brittleness, which means that hard metal insert members easily break.
  • the heavy handling weight requires strengthening of both the rotor and attachment arrangement, as well of the shaft member, and manufacturing and exchange proves to be labor intensive due to high handling weight.
  • US 5,954,282 (Britske and Hise) discloses an early attempt to provide the accelerating face of a shoe accelerating member with a plurality of wear resistant rod members, press-fit into bores formed in the accelerating face of a metal base member.
  • US 7,416, 146 (Britzke) proposes to position the press-fit rod members closer (stitched) together but also this technique suffered from serious drawbacks during operation in the field.
  • US 7,028,936 proposes a shoe accelerating member, comprising a base member provided with hard metal insert bars cast-in along the accelerating face.
  • the bar members are not rectangular but widen along two sides into the base member, expected to achieve a stronger attachment to prevent wash-out.
  • the bar members are positioned along the accelerating face, inserted in angled position stretch into the base member away from the axis of rotation, on top of each along axial columns alternating with columns of base face, which may, likewise US 4,787,564 (Britske discussed before) develop an irregular wear pattern, as will be discussed later.
  • radial rows of bar members are positioned along the upper edge and lower edge of the accelerating face. Also this configuration proved to be far to expensive to manufacture with wear parts that are far to heavy, and therefore not to be practical;
  • US 2007/0007376 proposes a composite anvil impact member comprising a casted base member provided with an impact face with cast-in inserted hard metal block members positioned, configured, positioned and oriented a small distance apart, such that the accelerating face has a high concentration of hard metal wear face and a low concentration of base face.
  • the insert faces may be positioned in series of rows and/or columns, possibly overlapping, in such fashion that horizontal gaps stretching along the entire accelerating face are interrupted, to prevent wear developing along the entire horizontal direction.
  • the filled insert joints are important because it is common for hard materials such as cemented tungsten carbide to crack and a single crack in a one-piece insert design could cause the entire anvil to quickly fail.
  • the filled insert joints between the insert members serve to prevent crack propagation, such that a crack in an insert that is a small part of a larger array will affect only the cracked insert which is less likely to affect the useful lifetime of the wear member, and is the reason that using many smaller wear resistant insert members with insert joints in between is preferable to using one large wear resistant insert to fill the forward depression.
  • the wear resistant insert members may have an interlocking geometry, such as a tongue and groove design or a shiplap joint.
  • the thickness of the wear members may vary, with thicker wear members applied where more intense wear is expected.
  • the insert member may also be arranged in two layers, with the interior layer as a safety barrier should the outer layer wear through or become dislodged. The layers are installed in a staggered pattern to counter erosion of joints.
  • EP 2545996 (Moosmann et al) proposes a shoe working member that is axially split along an axial separation joint, creating two standing working member parts, positioned abut against each other, each comprising a metal base member provided with a accelerating face part, creating a accelerating face of two accelerating face parts.
  • Each accelerating face part provided with a plurality of hard metal insert members positioned on top of each other in series of axial columns stretching along the accelerating face a distance apart, attached to the base member in grooves by brazing, alternating with columns of base face; a configuration already proposed in US 3,767,125 (Wood, mentioned before) for a closed rotor, and in US 7,416, 146 (Britzke et al discussed before) for an open rotor.
  • the shoe working member parts are screwed to a body member that is provided with means for attachment to the rotor.
  • the shoe working member of EP 2545996 is of three parts and very complicated, and very difficult to manufacture, yet very expensive. Handling weight is approximately 65 kg, far too heavy for manual handling.
  • the configuration of the accelerating face with of alternating columns of hard metal insert members and base face has a strong tendency to develop an irregular radial wave-like wear pattern resembling a wash board, as will be discussed late, significantly limiting the useful lifetime which is determined by the insert member that wears of first, leaving large amounts of very expensive hard metal insert members which are only partly utilized as throw-away, limiting useful lifetime and increasing wear costs and downtime accordingly, which makes the known composite shoe accelerating member not practical.
  • casted steel plate plates and strips may be reinforced with insert members to increase wear resistance of the working face, to be applied for wear protection of machinery surfaces, possible bended.
  • US 8,241,761 both Garber et al proposes a casting wherein a plurality of carbide containing wear resistant strip members are embedded in a base of less wear resistant ductile material, the strips arranged a distance apart overlap each other in series of rows positioned angled to the moment of abrasive material such that continuity of the base material stretching between the strips is prevented to avoid concentration of wear along the base material and possible wash-out of the strips.
  • Related US 5,328,776 (Garber et al) proposes the inclusion of a continuous central wear resistant element between the rows of strips.
  • US 2010/0143742 proposes compound wear resistant casting for steel plates and strips provided with a compact grid of wear resistant members of embedded in a matrix of less wear resistant ductile material which grid is placed in the mould before casting, the grid may be constructed of a number of wear members which may be connected together by bridges to prevent the wear members from separation from the matrix and for protection the weaker areas of ductile material within the grid, the grid creating one solid member for easy manufacturing and to increase wear resistance of the accelerating face because base areas are protected, and the grids may be applied multi level.
  • the proposed composite castings with embedded wear resistant members, rows and strips, may be successful for larger metal plates, but this technique is not practical to manufacture a highly wear resistant accelerating block members with a composite working face, here discussed.
  • the known hard metal configurations comprising a composite accelerating face partly of hard metal wear face and partly of base face, to save on costs, teach us that it is very difficult to avoid wash-out of wear members under conditions of intense wear, high dynamic loads, and large centrifugal force. Washout limits the useful lifetime, increasing wear costs, labor and down-time according, and should be prevented.
  • a composite accelerating face has the advantage that next to prolonged useful lifetime, wear channel formation is avoided, but to utilise the inserted hard metal members efficiently it is of utmost important that wear develops in regular way along the composite accelerating face; that is, that concentration of wear along the composite accelerating face is avoided, such that the expensive hard metal is effectively utilized, leaving limited throw-away. Therefore, the accelerating face must be configured such that concentration of wear around the insert members is avoided, reason that proposed inserted press-fit and cast-in hard metal rods have proven not to be practical because of wash-out. Proposed configurations of axial hard metal columns alternating with columns of base face in between have a strong tendency to develop an irregular wave like (washboard) wear pattern and should also be avoided. Wear tends also to concentrate along gaps of base face and joints stretching in radial direction, and should also be avoided. Increasing concentration and/or the thickness of the hard metal wear members along areas where more intense wear is expected is an option to increase useful lifetime, but manufacturing is rather complicated.
  • the aim of the invention is to provide an accelerating member that do not have the shortcomings listed before, or at least displays these to a lesser extent, more specific:
  • the problem to be solved by the present invention may be regarded as to find a constructional design for an accelerating member for an open rotor provided with an acceleration face constructed partly of base material sections and partly highly wear resistant insert members, such that development of an irregular wear pattern is avoided and premature wash-out and consequently breaking away of insert members is prevented, or at least hindered and the insert members are maximally utilized, which accelerating parts are easy to manufacture, limits lifting weight to a maximum of 10-20 kg, and are provided with a simple attachment arrangement for very easy and quick exchange.
  • an accelerating working member which is essentially split along at least one vertically directed separation joint, and/or, at least two horizontally directed separation joints, creating a multiple accelerating member of accelerating parts provided with a multiple acceleration face constructed partly of wear resistant impact members and partly of base material sections,
  • the insert members are provided with a polygonal insert accelerating face, which are configured and/or positioned and/or oriented along the acceleration face, such that each base section is surrounded by polygon insert faces, essentially interrupting any continuity of base material sections, in both the entire radial direction and in the entire axial direction, such that concentration of wear along the base material sections is hindered, so that the above mentioned aims are achieved.
  • the accelerating parts can be attached to the rotor in different ways, but according the invention a pin attachment arrangement is the preferred option, comprising, pin members stretching upward form the rotor which fit pin holes stretching in a vertical direction throughout the base members of the accelerating parts, such that the accelerating parts can be slid over the pin members, such that each accelerating part is separately exchangeable, possibly interchangeable, possibly upside down, for possible re-use of accelerating parts (), to attain maximum utilization of the insert members.
  • the proposed solutions of the invention apply the special properties of the composite working members, which are constructed of a base member of strong metal alloy which enables a simple attachment arrangement, and is provided with an accelerating face with highly wear resistant insert members to attain a very long useful lifetime when the shape of the multiple composite accelerating face is essentially maintained to obtain an essentially constant level of accelerating performance during said useful lifetime.
  • Figure 1 shows, diagrammatically, a side view of a vertical shaft impact crusher of prior art
  • Figure 2 shows, diagrammatically, a top view of figure 1
  • Figure 3 shows, diagrammatically, a 3D view of the composite impact member of figure 1, with a continuous pattern of insert faces;
  • Figure 4 shows, diagrammatically, a front view the acceleration face of figure 1 provided with hard metal inserts
  • Figure 5 shows, diagrammatically, a photograph of a typical wave-like wear pattern that develops along the acceleration face of figure 4;
  • Figure 6 shows, diagrammatically, a 3D view of a composite accelerating face () with a discontinuous pattern of impact faces according the invention
  • Figure 7 shows, diagrammatically, a 3D view of the composite accelerating member with the composite composite impact face of figure 6;
  • Figure 8 shows, diagrammatically, a 3D view of base member of figure 7;
  • Figure 9 shows, diagrammatically, a 3D view of the accelerating member of figure 7, split along radially directed separation joints;
  • Figure 10 shows, diagrammatically, a 3D view of the accelerating member of figure 7, split along axially directed separation joints;
  • Figure 1 1 shows, diagrammatically, a 3D view of the accelerating member of figure 10, split along radially directed separation joints;
  • Figure 12 shows, diagrammatically, a 3D view of the first separate accelerating part of figure
  • Figure 13 shows, diagrammatically, a 3D view of the base member of figure 12;
  • Figure 14 shows, diagrammatically, a 3D view of the second separate accelerating part of figure 1 1 ;
  • Figure 15 shows, diagrammatically, a 3D view of the base member of figure 14;
  • Figure 16 shows, diagrammatically, a 3D view of a second separate accelerating part according the invention;
  • Figure 17 shows, diagrammatically, a 3D view of the insert member of figure 16;
  • Figure 18 shows, diagrammatically, a 3D view of a base member of figure 16;
  • Figure 19 shows, diagrammatically, a 3D view of a second configuration of a composite accelerating member according the invention
  • Figure 20 shows, diagrammatically, a 3D view of the accelerating member of figure 19, split along radially directed separation joints;
  • Figure 21 shows, diagrammatically, a 3D view of the accelerating member of figure 19, split along axially directed separation joints;
  • Figure 22 shows, diagrammatically, a 3D view of the accelerating member of figure 21 , split along radially directed separation joints;
  • Figure 23 shows, diagrammatically, a 2D view of a third configuration of the composite accelerating face according the invention
  • Figure 24 shows, diagrammatically, a 2D view of a fourth configuration of the composite accelerating face according the invention.
  • Figure 25 shows, diagrammatically, a 2D view of a fifth configuration of the composite accelerating face according the invention.
  • Figure 26 shows, diagrammatically, a top view of a rotor provided with separate accelerating parts
  • Figure 27 shows, diagrammatically, a top view of the movable separate accelerating parts of figure 27;
  • Figure 28 shows, diagrammatically, a second top view of the movable separate accelerating parts of figure 27;
  • Figure 29 shows, diagrammatically, a 3D view of a rotor provided with a multiple composite accelerating member of separate acceleration parts provided with a first attachment arrangement according the invention
  • Figure 30 shows, diagrammatically, a 3D view of the separate acceleration part of figure 29;
  • Figure 31 shows, diagrammatically, a 3D view detailing the attachment arrangement off figure
  • Figure 32 shows, diagrammatically, a 3D view detailing the attachment arrangement off figure
  • Figure 33 shows, diagrammatically, a 3D view of a rotor provided with a multiple composite accelerating member of separate acceleration parts provided with a second attachment arrangement according the invention
  • Figure 34 shows, diagrammatically, a 3D view of the separate acceleration part of figure 33 ;
  • Figure 35 shows, diagrammatically, a 3D view detailing the attachment arrangement off figure
  • Figure 36 shows, diagrammatically, a top view detailing the attachment arrangement off figure
  • Figure 37 shows, diagrammatically, a 3D view detailing the separate interlock member of figure 36;
  • Figure 38 shows, diagrammatically, a 3D view of a rotor provided with a multiple composite accelerating member of separate acceleration parts provided with a third attachment arrangement according the invention
  • Figure 39 shows, diagrammatically, a 3D view of the separate acceleration part of figure 38 ;
  • Figure 40 shows, diagrammatically, a 3D view of the lock plate of figure 38 ;
  • Figure 41 shows, diagrammatically, a top view of a rotor provided with laying accelerating parts
  • Figure 42 shows, diagrammatically, a 3D view of laying multiple accelerating member of figure 41;
  • Figure 43 shows, diagrammatically, a top view of a first rotor according the invention, provided, for illustration, with multiple composite accelerating members positioned in different ways on top of the rotor;
  • Figure 44 shows, diagrammatically, a top view of a second rotor according the invention, provided, for illustration, with multiple composite accelerating members positioned in different ways on top of the rotor;
  • Figure 45 shows, diagrammatically, a top view of a rotor according the invention, provided, for illustration, with a primary and a secondary accelerating units;
  • Figure 46 shows, diagrammatically, a 3D view of a secondary composite accelerating member () of figure 45 ;
  • Figures 1 and 2 show, diagrammatically, a vertical shaft impact crusher (1) of prior art, comprising, a crusher housing (2) provided with an inlet member (3), a rotor (4), impact members (5) surrounding the rotor (4) and carried along the crusher housing (2), and an outlet member (6).
  • the rotor (4) is of the open type, carried by a shaft member (7), rotatable about an essentially axially directed axis of rotation (0) in at least one direction (8) for one-way operation of the rotor (4); the invention allows for the rotor (4) to be rotatable in both directions for two-way operation (268) of the rotor (269) - as shown in figure 41 , to be discussed later.
  • the rotor (4) carries composite accelerating members (10), of at least one part, on top of the rotor (4), hence the name open rotor, for accelerating (9) the stream of particle material in one step; the invention allows the rotor (4) to be provided with an associated composite accelerating member (311) - shown in figure 43 , to be discussed later.
  • the composite accelerating member (10) is firmly but exchangeable attached to rotor (4) with the aid of an attachment arrangement (13), and is provided with a composite acceleration face (14), stretching in the direction of the outer edge (15) of the rotor (4), for acceleration of the particle material with the aid of centrifugal force.
  • a composite acceleration member (10) has the advantage over a casted accelerating member in that the generated acceleration intensity remains essentially constant during operation because the composite impact face (14) does not wear out as is the case with a casted accelerating face, causing a sharp drop in impact intensity; but this requires that concentration of wear along the composite accelerating face (14) and consequent premature wash-out of insert members (18) is prevented.
  • the composite accelerating member (10) comprises, a base member (19) constructed of a strong metal alloy with the ability to withstand sudden applied dynamic loading, and is (at least) along the accelerating face (14) provided with a plurality of highly wear resistant insert members (18), fixedly connected to the base member (19) and possibly constructed of different insert materials, at least, of an insert material with a wear resistance substantially greater than the wear resistance of the base material.
  • the insert members (18) are provided with an insert face (20) with polygonal configuration (21), with may be constructed with even or uneven surface.
  • the composite accelerating face (14) is not completely covered with insert face (20), but constructed partly of exposed base face (22) and partly of insert face (20), creating a discofitinuous pattern of insert faces (), here of polygonal configuration to save on expensive insert members (18).
  • the rotor (4) is surrounded by a plurality of composite impact members (23), detailed in figure 3 , each comprising, a bases member (24) configured as a block member (25) which along the side (26) facing the axis of rotation (0) is provided with and composite impact face (27), which is normally completely covered with insert faces (28) to withstand the intense impact loading, creating a continuous pattern of insert faces (28).
  • the composite impact faces (27) are configured, positioned and oriented, such that the impact faces (27) protrude into the direction of the axis of rotation (0), surrounding the rotor (4) at a relative close radial distance (29), creating a surrounding impact unit (23) with a knurled shape (30), such, that the particle flight paths (31) are projected essentially perpendicularly to the impact faces (27).
  • the impact unit may also surround part of the rotor (not shown here), the particle material metered to the rotor (4) such that the stream of particle material is directed to said impact unit part (not shown here).
  • the impact unit (23) may also be configured as a stator (not shown here), positioned at a larger radial distance from the axis of rotation (0).
  • discontinuous composite accelerating members (10) have serious disadvantages, as explained before, most notably, premature wash out of insert members (18) which affect both useful lifetime and accelerating performance, heavy lifting weight and complicated attachment arrangements (13). Problems the invention aims to solve.
  • Figure 4 shows, diagrammatically, the prior art composite acceleration face (10) of figure 1 , provided with a discontinuous pattern of polygonal insert faces (20), placed on top of each other as columns (32) alternating with rectangular columns (33) of base face (34), creating an essentially axially directed rectangular lattice structure (35).
  • the base material is normally a steel alloy, which means that the wear resistance of the base face (34) is significantly lower than that of the hard metal insert faces (20).
  • Wear tends therefore to concentrate along the weaker exposed base face (34), which may cause the base material surrounding the insert members (18) to wear away, weakening the attachment, which may cause the insert members (18) to break away prematurely - a process called wash-out - with the result that the acceleration member (10), that is, that the base member (19) may wear through very quickly, and cause heavy damage to the attachment arrangement (13) and to the rotor (4) and possibly to the housing (2) before this is noticed.
  • the alternating columns (32)(33) of insert faces (20) and exposed base face (34) have a strong tendency to develop an irregular wavelike wear pattern (36), as is shown in figure 5 , with concentration of wear (37) along the exposed base face (34), and along the upper edges (39) of the base sections (34), which may lead to premature wash out of the insert members (18), which the present invention aims to avoid.
  • Figures 6 and 7 shows diagrammatically, the composite accelerating face (41) of a composite accelerating member (42) according the invention, that is, constructed partly of insert faces (43) and partly of exposed base face (44), creating a composite accelerating face (41) with a discontinuous pattern of polygon insert faces (46), actually a repeating pattern such that the accelerating member (42) may be split along at least one axially directed separation joint (47) directed transversally to the accelerating face (41), and/or, along at least two radially directed separation joints (48) directed transversally to the accelerating face (41), creating a multiple accelerating member (49) composed of multiple accelerating parts (50) and provided with a multiple accelerating face (41).
  • the insert faces (43) are configured and/or positioned and/or orientated along the accelerating face (41), in such fashion, that concentration of wear along the exposed base faces (44) and along the separation joints (47) (48) is hindered; that is, that (first) the exposed base face (44) is separated into a plurality of separate base sections (51), which are completely surrounded by polygonal insert faces (43), except where base sections (51) stretch along a separation joint (47)(48) or along an outer edge (53) of the multiple accreting face (41), such, that continuity between separate base sections (51) is essentially avoided along the composite accelerating face part (50), to hinder concentration of wear along separate base sections (51), (second), that the separate base sections (51) alternate with polygonal insert faces (46), interrupting essentially any continuity (55) of separate base sections (51), in both the entire radial direction (56) and in the entire axial direction (57) of the composite accelerating face (41), to hinder development of an irregular wave-like composite wear pattern (36), (third) that continuity of base
  • Figure 8 shows the base member (62) of the composite accelerating member (42) of figure 7, which has an extremely complicated configuration, with a pattern of insert openings (63) alternating with base sections (51) stretching in both axial (57) and radial (56) direction along the exposed base face (65), which is effective to obtain a regular wear pattern, but is very difficult and very expensive to manufacture, and is therefore not practical, a problem that the present invention aims to solve.
  • Figure 9 shows the composite accelerating member (42)(72) of figure 7, radially split along four radially directed separation joints (73), creating a multiple laying accelerating member (66) (74) of five laying composite accelerating parts (67) (75), to be positioned on top of each other each other, each provided with a laying composite accelerating face (68)(78), creating a multiple laying composite accelerating face (70) (77) of five laying composite accelerating face parts (68) (78).
  • the multiple laying accelerating member (66) is here constructed of two configurations of laying composite accelerating parts (79)(80) are required, which are easy to manufacture and save on handling weight; but, as will be shown in figure 28 , a multiple laying accelerating member (166) may be constructed of one type of laying accelerating part (165).
  • a multiple composite accelerating member (82) is created of four standing composite accelerating parts (83), positioned next to each other, each provided with a standing composite accelerating face part (84), creating a multiple laying composite accelerating face (85) of four composite accelerating face parts (86). Manufacturing of the standing composite accelerating part (84) is more difficult than with the laying composite accelerating parts (75).
  • this problem may, according the invention, be solved, by splitting the standing accelerating parts (83), along at least two radially directed separation joints (87) directed transversally to the standing accelerating face part (84), creating, a split standing accelerating part (16) of at least three separate accelerating parts (89), positioned on top of each other, each provided with a separate accelerating face part (90), creating a multiple separate accelerating member (91) of at least six separate accelerating member parts (89), provided with a multiple separate accelerating face (92) of at least six separate accelerating face parts (90).
  • the standing composite accelerating parts (83) may be split along four radially directed separation joints (87), creating each five separate accelerating parts (89), positioned on top of each other, each provided with a separate accelerating face part (90), creating a multiple separate accelerating member ( 1) of twenty separate accelerating member parts (89), providing a multiple accelerating face (92) of twenty separate accelerating face parts (90).
  • Continuity of base sections (98) is avoided across separation joints (81)(87), to hinder concentration of wear along the separation joints (81) (87).
  • the invention aims to limit the insert face (69) cover to not more than 50 to 60%, but more cover is not excluded, depending on particular conditions, and on application, and to limit the weight of the separate accelerating parts (89) to some 10 to 20 kg, but higher and lower weights are not excluded.
  • a uniform multiple composite accelerating member (104) that is, constructed of uniform separate composite accelerating parts (105) of one type, detailed in figure 16, provided with a simple base member (106), shown in figure 17, and possibly with uniform insert members (107), shown in figure 18.
  • the insert faces (108) of the uniform separate accelerating parts (105) stretch in continuous way along each of the outer edges (109) of the separate composite accelerating face part (110), such that a center base section (1 11) is created, completely surrounded by insert faces (108), which are provided partly with center insert faces (112) to create a discontinuous pattern.
  • the uniform composite accelerating member (104) is provided with a multiple composite accelerating face (113), wherein, any continuation between base sections (1 14) is avoided along each separate composite accelerating face part (110), to hinder concentration of wear along base sections (1 14) and across separation joints ( 116) ( 11 ) , to hinder development of an irregular wave-like composite wear pattern (36); and that, polygonal insert faces (118) stretch in continuous way along all separation joints (1 16)(1 17) and along all outer edges (119)(120), avoiding concentration of wear along the separation joints (116)(117) and to protect the outer edges (1 11)(120).
  • the uniform composite accelerating member (104) may be split, likewise the first composite accelerating part (42) of figure 7, creating, as shown in figure 20, only one type of laying composite accelerating parts (121), and, as shown in figure 21 , only one type of standing composite accelerating parts (122), and as shown in figure 22, and with only one type of separate composite accelerating part (123).
  • the invention allows for the discontinuous pattern of insert faces (124) to be configured and/or positioned and/or orientated along the multiple accelerating face (125), in different fashion, as examples shown in figures 23-25 -
  • the center space (126) of a separate composite accelerating part (127) may be provided with a center insert face (128) of circular configuration (129), positioned such that the center insert face (128) is completely surrounded by exposed center base (130).
  • the multiple composite accelerating face (125) may be provided with separate composite accelerating parts (131) provided with a continuous pattern of insert faces (132), here positioned along the center part (133) of the multiple composite accelerating face (125), to increase wear resistant along the center part (133) of the multiple composite impact face (125) ⁇
  • the invention allows for the polygon insert faces (134) to stretch along the multiple composite accelerating face (135), in radial direction (136), and/or, vertical direction (137), and/or angled direction (138).
  • the separate composite accelerating parts (139) may be configured and positioned and oriented, such, that at least part (140) of the separation joints (141) that stretch in a radial direction (142) along the multiple continuous composite accelerating face (143), do not extend in continuous way (144) in the entire radial direction (142) along the multiple composite accelerating face (143).
  • said specific multiple accelerating faces (125)(135)(143) may require more types of separate composite accelerating parts (131) (139).
  • the multiple composite accelerating face (70)(85)(92) may be provided with an increased concentration of insert material at locations along the composite accelerating face (70) (85) (92) that experience a greater extend of wear, to be achieved by increasing the density covered by the insert members (107) and/or by increasing the thickness of insert members (107), to significantly increase the useful lifetime of the composite accelerating member (104) during operation.
  • the base members (101)(102)(106) are constructed of a base material of at least an alloy or of high carbon steels, preferably a wear resistant alloy, or possibly a composite, possibly, a steel member or a casting, or a post cast machined casting, and also materials like aluminium may be considered, depending on the application; and the insert members are constructed of a highly wear resistant material, for example cemented (cobalt) tungsten carbide and other compositions of cemented carbides and cermets, as well as ceramics such as alumina and zirconia or combinations thereof, and other hard wear-resistant materials may be suitable for use, depending on the application; and the insert members (107) are fixedly connected to the base member (101)(102)(106), either inserted in the exposed base face (65) or attached along the exposed base face (65), possibly by, press fitting, brazing, or bonded with the aid of a bonding material, or inserted before alloy casting for metallurgical bonding, the casting possibly at least partly of a composite with carbide or
  • each of the composite accelerating part (75)(83)(89) discussed before has to be provided with an attachment arrangement, according the invention such, that the accelerating parts (75)(83)(89) are separately exchangeable.
  • the invention allows for any attachment arrangement that fulfills this requirement, but the attachment arrangement (155), shown in figure 26 to 28, that applies a pin member (150) stretching upwards from the rotor (151) fitting a pin opening (152) in the base member
  • the pin member (150) of cylindrical configuration, normally circle cylindrical.
  • the pin attachment (155) applies the strength of the base member (153), a pin opening (152) can be easy manufactured and the pin member (150) is simple and easy to attach to the rotor (151) such that the pin member (150) is exchangeable in case of damage.
  • the accelerating part (154) is separately exchangeable, possibly interchangeable, possibly upside down, for possible re-use of accelerating parts (154), to attain maximum utilization of the insert members (107),
  • Figure 26 shows separate accelerating parts (191), which are positioned next to each other abut stretching along the vertical separation joints (188), slid with the pin opening (189) over the pin members (190) next to each other.
  • each accelerating part (191) is firmly but exchangeable attached to rotor (151) with the aid of an attachment arrangement (155) which is configured such that the accelerating parts (191) are movable relative to each other (203) and/or can be made moveable relative to each other (204) (205), such that the axially directed separation joints (188) between accelerating parts (191) may be widened (195) at least to certain extend when the rotor (151) is not rotating, to break possible very fine cemented particle material that may accumulate in the separation joints (188), for easy exchange of the accelerating parts (191); more specific, the separate accelerating parts (191) are configured, such, that the base member (192) narrows along the standing sides (193) towards the back side (194), such, that the axially directed separation joints (188) widen (195), at least partly, in the direction away (196) from the acceleration face (197), such that the separate accelerating parts (191) are separately rotatable (198), at least to certain extend, about the pin members (199), which makes it possible to break the cemented bonds of dust,
  • a solution to this problem is to provide an attachment arrangement (203) (204) (205) provided with an interlock arrangement (206)(207)(208) that locks the acceleration parts (191) either, centrifugally to the pin member (150) avoiding the need for a separate lock member, and/or, mechanically with the aid of a separate lock member.
  • Figure 29 shows a first attachment arrangement (203) according the invention involving a first centrifugal interlock arrangement (206), comprising, as detailed in figure 31 and 32, first interlock means (210) and second interlock means (21 1), fitting each other, such that the separate accelerating parts (212) become centrifugally locked to the pin members (214) during operation, preventing or at least hindering the rotatability (93) of the separate accelerating parts (212).
  • the first interlock means (210) created by configuring each base member (215) of the separate accelerating parts (212) along the back side (21 ) with an open sleeve opening (217), stretching in a vertical direction, as shown in figure 30.
  • the second interlock means (211), comprising, an associated pin member (218), shown in figure 29, stretching upward from the rotor (219), firmly but exchangeable attached to the rotor (219) at a location behind the pin member (214), seen in the direction of rotation (220), fitting the first interlock means (210), in that the associated pin member (218) has a diameter (221) smaller than the radial width (222) of the sleeve opening (217), as shown in figure 32, such that the separate accelerating part (212) is rotatable (223) about the pin member (214) at standstill, to certain extend, and is, as shown in figure 31 and 32, pressed (186) with outer side (224) of the sleeve opening (217) facing the axis of rotation (0) against the rotating associated pin member (218), under influence of the centrifugal force, centrifugal locking the separate accelerating part (212) in radial aligned position to the pin member (214) during operation.
  • a separate lock member (225) may be required to hinder upward movement (226) of the separate accelerating members (212) along the pin members (214), here an upper strip member (227), shown in figure 29, positioned along the top side (228) of the multiple accelerating member (229) and provided with closed sleeve openings (230) which can be slid down over the pin members (214), and fits grooves (231) along the top side of the pin members (214), centrifugally locking the upper strip member (227) to the rotating pin members (214).
  • pin members (236) may along the top side be provided with screw members (not shown here) such that upwards movement is hindered, and the pin members (214) may also be positioned slightly angled (not shown here), in upward direction, into the direction of the axis of rotation (0), centrifugal locking the separate accelerating part (212) to the pin member (214), avoiding the need of a separate screw member.
  • FIG 33 shows a second attachment arrangement (204) according the invention involving a second mechanical interlock arrangement (207), comprising, first interlock means (232) and second interlock means (233), fitting each other when the separate accelerating parts (234) are radially aligned (235) for operation, such that the separate accelerating parts (234) become mechanically locked to the pin members (226) during operation, to prevent the rotatability (64) of the separate accelerating parts (234).
  • a second mechanical interlock arrangement 207
  • first interlock means 232
  • second interlock means 233
  • the first interlock means (232) are created by configuring the base member (237) of each separate accelerating parts (234) along one or both laying sides (238)(239), (or along the standing sides (200)) with a groove opening (24l)(242), that is an upper (241) and a lower (242) groove opening, such that the groove opening (24l)(242) stretches along the entire opposing horizontal separation joints (243) and along the bottom side (244) and along the top side (245) of the multiple accelerating member (246).
  • the second interlock means (233) comprises a strip member (247) , detailed in figure 37, that fits said groove opening (24l)(242) and is provided with pin openings (248).
  • the strip member (247) can de slid downwards over the pin members (236) to fit the upper groove opening (241), to prevent the rotatability (64) of the separate accelerating parts (234) positioned underneath the strip member (247) during operation, and is provided with separate ring members (249) to be slid down over the pin member (236) on top of strip member (247) to hinder upward moment of the strip members (247) during operation.
  • the strip member (247) has to be installed before operation and is easily removable during exchange of the separate accelerating parts (234). As is shown in figure 35 , the separate accelerating parts (234) become freely rotatable when the strip member (247) is removed to break any cemented dust bonding.
  • Groove openings (24l)(242) are stretching along both laying sides (238) (239) to obtain full symmetry, such that the separate accelerating parts (234) may be used upside down. It is however possible to provide only one of the laying sides (238)(239) with a groove opening (240), which configuration cannot be applied upside down. It is, according the invention also possible to provide only two adjacent separate accelerating parts (234) with a sorter strip member (not shown here), which will prevent rotatability (64) of all separate accelerating parts (234(, but might cause that forces are not equally divided over the pin members (226).
  • Figure 38 shows a third attachment arrangement (205) according the invention involving a third mechanical interlock arrangement (208), comprising, first interlock means (250) and second interlock means (2 1), fitting each other when the separate accelerating parts (252) are radially aligned (253) for operation, such that the separate accelerating parts (252) become mechanically locked to the pin members (254) during operation, preventing said rotatability (52) the separate accelerating parts (252).
  • First interlock means (250) are created by configuring each back side (255) of the separate accelerating parts (252) with a small rod member (256), as is shown in figure 39, that protrudes from the back side (255).
  • Second interlock means (251) comprise a separate plate member (257) provide with rod openings (258), positioned such that the rod members (256) fit the rod openings (258) when the plate member (257), detailed in figure 40, is placed along the back side (259) of the multiple accelerating member (260), mechanically locking the separate accelerating parts (252) to the pin members (254), preventing the rotatability (52) of the separate accelerating parts (252).
  • the rod members (256), and rod openings (258) are configured essentially conical (261), for easy installment.
  • the plate member (257) may be attached to the back side (259) of the separate accelerating parts (252) with the aid of screw members (262), which may extend fitting a groove (263) in the pin member (254), to hinder upwards movement of the separate accelerating parts (252).
  • Figure 41 shows a rotor (164) provided with uniform laying accelerating parts (165) which are positioned on top of each other on top of the rotor (164), centrifugally locked to the pin members (167), as shown in figure 42, alternating upside down (180), creating a uniform multiple laying accelerating member (166).
  • the laying accelerating part (165) stretches between two far ends (168)(169), in a direction away from the axis of rotation (0), forward angled (170) into the direction of rotation (171); and are provided with an inner pin opening (172) positioned along the far end (168) closest to the axis of rotation (0) and an outer pin opening (173) positioned along the far end (169) closest to outer edge (174) of the rotor (164).
  • Both pin openings (172)(173) stretch throughout the base member (175) in a vertical direction, one pin opening (172) constructed as a circular closed opening (176), the other pin opening (173) constructed an open sleeve opening (177) which stretches into a direction away from the axis of rotation (0), each pin opening (176)(177) fitting a pin member (167) stretching upwards from the rotor (164), such that the laying accelerating part (165) may be installed by sliding the closed pin opening (176) over a pin member (167), then to be turned (181) until the sleeve opening (177) fits the other pin member (167), such, that the laying accelerating parts (165) may be applied upside down (180), and such, that the radial line (184) from the axis of rotation (0) through the point of gravity (185) of the laying accelerating part (165), stretches somewhere in between the cylindrical axis' of the two pin members (167), centrifugal locking the laying accelerating part (165) with the sleeve opening (177) to the rotating pin member
  • FIG. 43 shows, diagrammatically, a top view of a rotor (269) according the invention, provided, for illustration, with three symmetrical multiple composite accelerating members (264) (265) (266) positioned in different ways on top of the rotor (269).
  • a first configuration (264) comprises two multiple separate accelerating members (270), each with pin attachment (271).
  • a second configuration (265) comprises two multiple laying accelerating member (272), which have to be directed sufficiently forward (273) into its direction of rotation (274) such that the radial line (275) from the axis of rotation (0) with on it the point of gravity (276) of the laying accelerating member (272), stretches between the two associated pin members (277) to enable centrifugal locking and that the centrifugal force is divided equally over the two pin members (277).
  • the third configuration (266) shown here is composed of transversally directed plate members (278), which are radially aligned, abut against each other, each plate member (278) centrifugally locked to two associated pin members (279).
  • Figure 44 shows, diagrammatically, a top view of a rotor (281) according the invention, provided, for illustration, with four multiple composite accelerating members (182)(282)(283)(284) positioned in different ways on top of the rotor (281).
  • the accelerating parts (182) may be positioned on top of the rotor (281), either, radially aligned, abut against each other, and/or, radially arranged, a radial distance apart (183), such, that each rotating separate composite accelerating face part (182) contributes to the accelerating (187) of the particle material, with at least the aid of at least the centrifugal force.
  • the second multiple composite accelerating members (282) is provided with split standing accelerating parts (285) which are essentially radially aligned, partly abut against each other, positioned, such, that the standing inner outer edge (286) of the inner acceleration face part (287) stretches along a radial plane (288) from the axis of rotation (0), and the standing outer inner edge (289) of the outer - here adjacent - acceleration face part (290) is positioned at a location behind said radial plane (288), seen in the direction of rotation (291), creating a stepped multiple acceleration face (292), to limit the surface of the multiple acceleration face (293) that comes in contact with the particle material during acceleration, to limit wear along the insert faces (294).
  • a third and fourth multiple composite accelerating members (283) configured as a multiple laying accelerating member (295), such that a multiple acceleration face (296) is created with a radial, here concave, curvature (297), stretching, along the multiple composite acceleration face (284).
  • a composite acceleration face (284) has the advantage over a casted acceleration face, in that, the radial curvature (297) remains essentially constant during operation because the composite accelerating faces (284) hinder radial channel formation along the curved acceleration face (299), as is the case with casted block members.
  • the radial curvature (297) may stretch in the direction of the outer edge (300) of the rotor (281), either along a concave radial curvature (301) or along a convex radial curvature (302), where a concave curvature (302) is normally the preferred configuration.
  • the radial curvature (297) is defined with the aid of the contour corner (al) between the radial line (303) from the axis of rotation (0) crossing the curved acceleration face (279), the radial curvature (297) being, either, constant along the curved acceleration face (279), or translating in a regular way between the location (304) where the radial curvature (297) starts and the location (305) where the radial curvature (297) ends.
  • a constant concave radial curvature (306) may contribute to hinder development of an irregular wear pattern along the curved acceleration face (279), in particular a wavelike or washboard-like, wear pattern (36) stretching in the radial direction - as shown in figure 5 for a straight acceleration face.
  • Figure 45 shows a rotor (307) provided with three different configurations, each comprising an accelerating member (308)(309)(310) provided with an associated acceleration member (31 1)(312)(313) in different configurations.
  • the accelerating members (308)(309)(310(31 1)(312)(313) positioned on top of the rotor (307), such, that each accelerating face (314) (315) (316) (317) (318) (319) contributes to the accelerating of the particle material, with the aid of at least the centrifugal force, and the associated accelerating members (311 ) (312) (313) add to the acceleration achieved with the accelerating member (308) (309) (310).
  • the associated accelerating members (311)(312)(313) may be configured, either, as a rectangular block member (317), or, as a cylindrical block member (318), each possibly at least radially split, each provided with an acceleration face (317) (318) completely covered with insert faces (322), or, with the associated accelerating member (313) configured as a box member (323) provided with one box opening (324) facing the axis of rotation (0), configured such that an autogenous bed (325) is created in the box member (323) during operation, providing an autogenous acceleration face (326).
  • the cylindrical standing block member (318), detailed in figure 46, is configured circular about a cylindrical axis of rotation (00) stretching essentially parallel to the axis of rotation (0), provided with a central circular cylindrical attachment opening (327) fitting an associated pin member (328) stretching upward from the rotor (307), firmly but exchangeable attached to the rotor (307), such that the cylindrical block member (318) is freely self-rotatable (329) about said cylindrical axis (00), the cylindrical accelerating member (318) may be possibly radially split (not shown here) into three cylindrical separate accelerating parts, such, that each cylindrical separate accelerating part is separately and freely self rotatable (329) about said cylindrical axis (00).
  • the cylindrical acceleration member (318) may possibly be configured for example with an open space (335) stretching throughout the cylindrical block member (318), such that the point of gravity (330) of the cylindrical block member (318) does not coincide (334) with said cylindrical axis (00), to achieve controlled self- rotation (331), such that the composite accelerating face (332) wears off in essentially regular way around, during operation, to achieve maximum utilization of the insert members (333).

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

La présente invention concerne une conception de construction pour un organe d'accélération pour un concasseur à percussion à arbre vertical doté d'une face d'accélération constituée en partie de sections de matériau de base et en partie d'éléments inserts à haute résistance à l'usure, de sorte que le développement d'un motif d'usure irrégulier soit évité et que l'érosion prématurée et, par conséquent, la cassure d'éléments inserts soient évitées, ou au moins limitées, et que les éléments inserts soient utilisés à leur maximum, ces pièces d'accélération sont de fabrication facile, peuvent limiter le poids de levage à un maximum de 10 à 20 kg, et sont pourvues d'un agencement d'attache simple pour un changement très facile et rapide.
EP17710661.4A 2016-01-25 2017-02-24 Organe d'accélération pour concasseur à percussion à arbre vertical Active EP3408030B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1041689A NL1041689B1 (en) 2016-01-25 2016-01-25 Acceleration unit for impact crusher.
PCT/EP2017/000265 WO2017129372A1 (fr) 2016-01-25 2017-02-24 Organe d'accélération pour concasseur à percussion à arbre vertical

Publications (2)

Publication Number Publication Date
EP3408030A1 true EP3408030A1 (fr) 2018-12-05
EP3408030B1 EP3408030B1 (fr) 2020-03-25

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NL (1) NL1041689B1 (fr)
WO (1) WO2017129372A1 (fr)

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Also Published As

Publication number Publication date
EP3408030B1 (fr) 2020-03-25
NL1041689B1 (en) 2017-07-31
WO2017129372A1 (fr) 2017-08-03

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