WO2013127507A1 - Impact member for vertical shaft impact crusher - Google Patents
Impact member for vertical shaft impact crusher Download PDFInfo
- Publication number
- WO2013127507A1 WO2013127507A1 PCT/EP2013/000527 EP2013000527W WO2013127507A1 WO 2013127507 A1 WO2013127507 A1 WO 2013127507A1 EP 2013000527 W EP2013000527 W EP 2013000527W WO 2013127507 A1 WO2013127507 A1 WO 2013127507A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- impact
- impact block
- members
- stretching
- drum wall
- Prior art date
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Classifications
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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
- 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
- B02C13/185—Construction or shape of anvil or impact plate
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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
- 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
Definitions
- the invention relates to the field of the acceleration of material, in particular streams of granular or particulate material, with the aid of centrifugal force, with the aim of causing accelerated stream of grains or particles to collide with at least a stationary impact member at such a velocity that they are crushed, but other possible applications are not excluded.
- a stream of particle material can be accelerated in a crusher housing with the aid of centrifugal force.
- the material is normally fed onto the centre part of a rotor that rotates rapidly about a vertical axis of rotation, which material and then collected by one or more sliding members for accelerating of the material with the aid of centrifugal force, which accelerated material is then thrown around from the rotor at high velocity to impact (or collide) with a stationary impact member that surround the rotor, for which the impact member is provided with an impact face that is transversally directed to the thrown accelerated stream of particles.
- the crushing housing comprises a drum member of which the drum wall stretches in vertical direction with on top a removable lid member; the impact member stretches along the drum wall and is carried by the crusher housing, either by the drum wall or with the aid of a cage member for easy exchange, a configuration known from US 5,806,774 (Vis), and can also be carried by the lid member, a configuration known from US 7,854,407 (Potter et al).
- the stationary impact member can be an armoured ring with protruding corners, also called anvils, of which the impact faces are directed perpendicular to the flight path, creating an impact member composed with so called anvils that have protruding corners, creating a surrounding knurled face, a configuration known from US Des 362,450 (Bajadali) and US 4,699,326 (Warren).
- the anvils from the known configuration have the advantage that they can be positioned closely around the rotor which limits the diameter of the anvil ring, but have the disadvantage that the protruding corners disturb the particle movement as well as the air stream, again at the expense of impact intensity, wear and energy; moreover, and the anvils wear off rapidly, which strongly reduces the impact intensity and limits the service time.
- the anvil ring can be combined with autogenous impact, a configuration known from US 5,639,030 (Watajima).
- An anvil ring can also be positioned at larger radial form the rotor, a configuration known from WO 2004002629, which drawn is name of applicant, that requires a larger diameter drum member, but has the advantage that significant more wear material is available, translating in longer wear life, much lower wear around the outer edge of the rotor, less turbulence in the crusher housing.
- the anvils are normally carried with the aid of a cage member, liftable in and out of the drum member with the anvils.
- the stationary impact member can be out of one piece, but involves normally a plurality of impact block members, which are positioned next to each other creating a composed impact member, either a composed anvil impact member, or a composed stator impact member.
- a one-piece impact member has the advantages over a composed impact member, no need a cage member for easy exchange, no need attachment means to keep the stator in place, which present considerable saving on weight, yet significant lower amount of throw-away material, and limits the diameter of the drum, though liftability requires also here certain free space between the stator and the drum wall; casting and transport of a one-piece impact member is more difficult, hence significant more expensive than a composed impact member, and is not practical with ceramic inserts, reason why a composed impact member is normally preferred.
- a composed impact member has certain shortcomings.
- the centre parts of the impact faces wear out gradually around during service, and wear can develop and concentrate at locations where the impact face has been accidently damaged, and along the joints between the impact member elements, and it has to be avoided that one of the impact members wears through, also called burn through, which can cause damage to the construction behind the impact member, including the attachment members.
- This problem can be avoided to certain extend when the impact ring is positioned at a larger radial distance from the rotor, and sufficient space can be created between the drum wall and the impact ring, such that this space fills with own material when the stator starts to wear through - called a close inner space - and a bed of own material is created that is compacted by repetitive impact creating a partial metal/autogenous impact face that provides still good impact intensity, which means that effective service time is increased because more wear material is effectively utilized.
- Such configuration with closed inner space is known from WO 2004002629 (cited before), and is in particular effective with a stator like impact ring, but this technique can also be applied with a composed impact face with collision relief, essentially an anvil ring positioned at larger radial distance from the rotor an anvil ring.
- stator it is therefore preferred to limit the number of stator segments, yet the number of joints between the stator segments, which have a tendency to wear off faster when ceramic inserts are applied which have to be positioned at certain distance of the outer surface, but this means that rather heavy segments have to be exchanged, involving however less segments.
- stator segments can be carried directly by the drum member, preferably such that closed inner space is created providing sufficient depth for the creation of an effective partly autogenous impact face, though further increasing the drum diameter, or limiting the radial distance between the rotor and the impact face, resulting in more angled, yet less effective, angle of impact.
- the situation gets worse when the stator segments are placed in a cage, further increasing the drum diameter, or accepting more angled impact causing also a higher wear rate - taken also into account that much more weight has to be lifted, which requires a rather heavy cage construction.
- the known configuration with composed impact member that provides a closed inner space has also a problem that one of the impact members can wear through completely such that an impact block member splits, that is, that the upper half of the impact block member becomes separated from the lower half and collapses into the crusher chamber, which can cause serious damage to the rotor and other parts of the crusher and related devices - as well to the drum construction behind the impact block member.
- the composed stator member has therefore to be exchanged in time, that is, before one of the impact members wears through completely, which can leave much unused throw away wear material.
- the aim of the invention is, therefore, to provide a composed impact member that provides a closed inner space, as described in some detail before, that does not have these disadvantages, or at least displays these to a lesser extent;
- the principal aim of the invention is to provide a simple construction of a composed impact member that is more wear efficient and prevents that damage occurs to the crushing housing when one of the impact block members wears through completely and splits, and makes it possible to effectively utilize a maximum amount of the wear material of the sliding block;
- Another aim of the invention to provide the impact block member with simple attachment means for easy and quick exchange, that enables effective utilization of ta maximum amount of wear material;
- Another aim of the invention is to provide the crusher housing with a simple instalment assembly for easy instalment of the impact block members in the crusher housing.
- Another aim of the invention is to provide a simple liftable cage member construction that carries the composed impact member, and enables to position the composed impact face at maximum radial distance from the rotor.
- the invention involves a composed impact member that comprises a plurality of impact block members which stretch, positioned next to each other, around in front of the drum wall, such that a closed inner space or a number of closed inner spaces are created stretching around between the impact block member and the drum wall, such that the closed inner space fills with particle material when an impact block member starts to wear through, which particle material is continuously compacted by repetitive impact creating an impact face that is partly autogenous of compacted own material, which autogenous areas provide still significant impact intensity, provides temporary protection to the construction behind the impact member, provides a warning sign that the impact block member can be exchanged in time before the construction behind the impact block member becomes damaged:
- the principal aim of the invention is achieved with the aid of a support member, firmly attached to the impact block, stretching along a standing side, such that an essentially closed inner space is created between the composed impact member and the drum wall, fills with particle material when the impact block starts to wear through, creating a partly worn through impact face that is partly autogenous of own material, compacted by repetitive impact, providing still significant impact intensity and temporary protection to the construction behind the impact block; - such that collapse of the upper part and/or of the lower part of the impact member block into the crushing chamber is hindered when an impact member wears through and splits; with the result that a maximum amount of wear material is effectively utilized during service and possible damage to the crushers is averted, and longer service time is attained, saving on wear costs and increasing machine availability.
- Another aim of the invention is achieved by providing the support member with simple attachment means providing an essentially dove tail like attachment arrangement, locking the impact block member from moving forward and/or in vertical direction downward, removable for exchange.
- Another aim of the invention is achieved by providing the crusher housing with supporter elements, removable for exchange, attached to the drum wall construction, preferably removable for exchange in case of damage, stretching underneath the impact block member along the radial plane into the direction of axis of rotation, for easy instalment of the impact block members.
- a cage member that carries the impact block members comprising an annular ring construction stretching along at least part of the top sides of the impact block members to which the impact block members are attached, essentially underneath the annular attachment ring, removable for exchange, creating an annular composed impact member, liftable into and out of the drum member.
- Figure 1 shows, diagrammatically, a side view A- A of a first embodiment of the crusher housing according the invention, provided with a first embodiment of a impact block member according the invention;
- Figure 2 shows, diagrammatically, a top view of the crusher housing without lid from figure 1 ;
- Figure 3 shows, a first 3D view of the impact block member from figure 1 ;
- Figure 4 shows, a second 3D view of the impact block member from figure 1 ;
- Figure 5 shows, a top view of the impact block member from figure 1 ;
- Figure 6 shows, diagrammatically, the 3D view of the instalment arrangement for the impact block member of figure 1 ;
- Figure 7 shows, diagrammatically, a 3D view of another instalment arrangement with a the impact block member of figure 1 ;
- Figure 8 shows, diagrammatically, a 3D view of a wear pattern of the impact member of figure 1 ;
- Figure 9 show, diagrammatically, a side view of the impact block member according the invention of figure 1 ;
- Figure 10 show, diagrammatically, a side view the impact block member according the invention of figure 1 , with wear pattern;
- Figure 11 shows, diagrammatically, a 3D view of a second embodiment of the impact block member according the invention.
- Figure 12 shows, diagrammatically, a 3D view of a third embodiment of the impact block member according the invention.
- Figure 13 shows, diagrammatically, a side view of a fourth embodiment of the impact block member according the invention.
- Figure 14 shows, diagrammatically, a top view of the impact block member of figure
- Figure 15 shows, diagrammatically, a 3D view of a fifth embodiment of the impact block member according the invention.
- Figure 16 shows, diagrammatically, a side view of the impact block member from figure 15;
- Figure 17 shows, diagrammatically, a 3D view of a sixth embodiment the impact block member according the invention.
- Figure 18 shows, diagrammatically, a top view of the impact block member from figure 17;
- Figure 19 shows, diagrammatically, a 3D view of a seventh embodiment impact block member according the invention.
- Figure 20 shows, diagrammatically, a side view the impact block member of figure 19;
- Figure 21 shows, diagrammatically, a side view the impact block member of figure 19, indicating a wear pattern
- Figure 22 shows, diagrammatically, a 3D view of a first instalment arrangement for impact block member of figure 19;
- Figure 23 shows, diagrammatically, a to view of a segment of the crusher housing provided with the impact block member of figure 19;
- Figure 24 shows, diagrammatically, a to top view of the crusher housing provided with the impact block member of figure 19;
- Figure 25 shows, diagrammatically, a first 3D view of a ninth embodiment of the impact block member according the invention.
- Figure 26 shows, diagrammatically, a second 3D view the impact block member of figure 25;
- Figure 27 shows, diagrammatically, a 3D view of a first embodiment of a cage member, provided with a third instalment arrangement according the invention, for impact block member of figure 25;
- Figure 28 shows, diagrammatically, a to top view of the crusher housing provided with the impact block member of figure 25;
- Figure 29 shows, diagrammatically, a side view of a second embodiment of a cage member according the invention provided with the impact block member of figure 19;
- Figure 30 shows, diagrammatically, a 3D view of a segment of the cage member of figure 29, provided with a fourth instalment arrangement according the invention
- Figure 31 shows, diagrammatically, a top view of the crusher housing provided with the cage member of figure 29;
- Figure 32 shows, diagrammatically, a to 3D view of a tenth embodiment of the impact block member according the invention
- Figure 33 shows, diagrammatically, a top view of a third cage member according the invention for the impact block member of figure 32;
- Figure 34 shows, diagrammatically, a first 3D view the cage member of figure 33 provided with a fourth instalment arrangement according the invention
- Figure 35 shows, diagrammatically, a second 3D view the cage member of figure 33
- Figure 36 shows, diagrammatically, a to top view of the crusher housing provided with the cage member of figure 33, and the impact block members of figure 32;
- Figure 37 show, diagrammatically, a 3D view of an eight embodiment of a stator impact block member, with a second instalment arrangement, according the invention
- Figure 38 show, diagrammatically, a side view of the stator impact block member, of figure 37.
- Figure 39 show, diagrammatically, a top view of the stator impact block member, of figure 37.
- Figure 1 and 2 show, diagrammatically, a first embodiment (1) of a crusher housing construction (2) according the invention, provided with a first embodiment (3) of a impact block member (4), further detailed in figure 3 4, and 5, with the wear pattern that develops detailed, diagrammatically, in figures 8, 9 and 10.
- the crusher housing construction (2) comprises a drum member (5) with a drum wall construction (6) that stretches in an essentially vertical direction, and is on top provided with a removable lid member (8), creating a crushing chamber (9) underneath the lid member (8) that is provided with a central opening (7) for feeding material into the crushing chamber (9).
- the crusher housing (2) is provided with a rotor (10), carried by the crusher housing construction (2) with the aid of a shaft member (11), positioned centrally in the crushing chamber (9), at a location underneath the central opening (7), which rotor (10) is rotatable about an essentially vertically directed axis of rotation (0) in at least one direction (00).
- the rotor (10) is provided with acceleration members (13), which are of at least one part carried on top of the rotor (10), for accelerating of the material that is fed into the crushing chamber (9) onto the rotor (10), with the aid of centrifugal force, which accelerated stream of particle material (12) is then thrown around from the rotor (10) at high velocity.
- the crushing housing (2) is provided with a plurality of impact members (4), of at least one type of wear resistant construction material, creating a composed impact member (18), here a stator, of impact block members (4) positioned next to each other carried along the drum wall (6), surrounding the rotor (10) a radial distance away.
- the impact block members (4) can be attached to the drum wall (6) directly or carried with the aid of a cage member (not shown here) - the standing wall of which cage stretches along the drum wall functioning as drum wall (6) to be discussed later.
- the impact block members (4) Positioned next to each other along the drum wall construction (6), the impact block members (4) hinder each other to move in a forward direction.
- the impact block member (4) is provided with at least an impact block (47) and at least one support member (25), here two support members (25)(26), the impact block (47) provided with at least one impact face (14), transversally directed to the thrown stream of particle material (12), stretching in regular way around the axis of rotation (0), creating an essentially rounded composed impact face (15), a radial distance away from the rotor, stretching in vertical direction between the top side (19) and the bottom side (20), and in horizontal direction interrupted by the radial sides (17) of the impact block member that stretch into the direction of the drum wall (6) towards a back side (21) opposite of the impact face (14) facing the drum wall (6).
- the accelerated stream of particle material (12) is thrown at high velocity to collide with the impact face (14) for the particles to be crushed, the impact face (14) wearing out gradually around during operation developing an essentially concave wear pattern (22) along the centre (46) of the impact face (15) stretching between the top side (19) and the bottom side (20), which impact block (47) has to be replaced before the back side (21) wears through (23) and the construction (24) behind the impact block (47) becomes damaged.
- the two support members (25) are here fixedly connected to the impact block (47), detailed in figure 3, 4 and 5, protruding from the back side (21) into the direction of the drum wall construction (6), stretching in an essentially vertical direction along part of the side edges (17) back side (21), at least crossing the centre part (48) of the back side (21) that wears through completely (23), such that an essentially closed inner space (27) is created stretching between the composed impact member (18) and the drum wall construction (6), along at least part of the backside (21) of the impact block (47), into the direction of the drum wall construction (6), such that the closed inner space (27) fills with particle material when the impact block (47) starts to wear through (23), such that the upper part (39) and the lower part (36) of the impact block (47) remain firmly connected to each other when the backside (21) wears through completely (23).
- the impact block member is here carried by the drum wall construction (6) with the aid of the two standing bar members, detailed in figure 5, 6 and 7, provided with first attachment means (30)(31) along the top edges (28)(29), here two opposite first top attachment means (30)(31), fixedly attached, at a location outside the area, or centre part (48), where the back side (21) wears through, avoiding damage, fitting two second attachment means (32)(33), carried by the drum wall construction, here two lock members (32)(33) of an attachment strip (34), detailed in figure 6, stretching along the drum wall (6) at an attachment location (35), such that the impact block member can be firmly but removable attached to the drum wall, by sliding the impact block member (4) in downwards direction (51), detailed in figures 5 and 6, for which the top attachment members (30)(31) and the top lock members (32)(33) each are provided with an angled face (37)(38) that stretches into the direction of the drum wall (6), creating an essentially dove tail like attachment arrangement (55), detailed in figure 7, stretching both in the direction of
- Figure 8, 9 and 10 show, diagrammatically, the wear pattern (43) as it develops along the centre part (48) of impact face (14).
- the impact block member (4) starts to wear through (23), creating a partly worn through impact face (49), detailed in figure 10
- the closed inner space starts (27) starts to fill with own material, creating a partly worn through impact face (49) that is partly autogenous of own material, compacted by repetitive impact, providing still significant impact intensity, temporary protection to the construction (6) behind the impact block (47), a warning sign that the impact block member (4) has to be exchanged; it is important that the standing bar members (26) stretch at least along the centre part (48) of the back side (21) that wears through, such that the upper part (39) and the lower part (36) of the impact block (47) remain firmly connected to each other with the aid of the support members (25) when the backside (21) wears through completely (23), detailed in figure 8, and split and consequent collapse into the crushing chamber (9) of the upper part (39) of the impact block (47) and/or of the
- Attachment arrangements includes, next to dove tail like solutions ((37)(38) of the first embodiment (3) of the sliding block member (4), such means as hooks, pins and bolts, and the like - that hinder collapse into the crushing chamber (9) of the upper part (39) of the impact block member (4) and/or of the lower part (36) of the impact block member (4), when an impact block member (4) wears through completely (23) between the top side (19) and the bottom side (20).
- the invention allows for the impact block member (4) at least along the impact face (14) to be provided with at least one open chamber (not shown here) that fills with crushed material providing a partially autogenous impact face during service; and the invention allows also to obtain a partly autogenous impact face by positioning the impact block member a distance away from each other (not shown here).
- the inner depth (40) - or width between the back side and the drum wall construction (6) and the drum wall construction (6) - of the closed inner space (27) must be sufficient to be effective depends on various parameters, in particular the type and properties of the feed material - such as crushing behaviour, feed diameter, resulting particle size distribution during repetitive impact, packing properties and moisture content - and the impact velocity and impact sequence. Furthermore, it is important that the vertical width (44) of the wear through opening (23) does not become too big; as a rule of the thumb, the vertical width (44) should not exceed the inner depth (40) of the closed inner space (27).
- the closed inner space (27) has to provide sufficient impact resistance/protection, decided by the inner depth (40) of the closed inner space (27), and of course the size of the worn through part (23), and the impact block member (4) has to be exchanged before this becomes too large, which requires regular inspection when the accelerating members (13) are exchanged.
- effective inner depth (40) is minimum 50 mm with crushing of 80 mm gravel feed material at some 75 m/s impact velocity, but depending on the parameters indicated before, inner depth (40) of 30 mm might be effective with finer feed material, or a larger inner depth (40) might be required, to be decided on trials that simulate the practical conditions.
- the inner depth (40) of the closed inner space (27), or the distance between the back face of the impact block member and the drum wall construction can be increased by positioning a wall strip member (52) between the standing bar member (26) and the drum wall construction (6); and the drum wall construction (6) can along the bottom edge (42) of the back side (21) be provided with a strip member (41) that stretches around along the drum wall (6), which strip member (41) stretches here underneath the support members (25) providing additional support to the impact block member (4).
- the impact block member (4) is constructed of a wear resistant material; that is of at least an iron based alloy; and the impact block member (4) can at least partly along the impact face (14) be provided with a inserts or otherwise incorporated materials that provide a high wear resistance that the other construction material (not shown here), which can include ceramic materials; or more specific: employ iron, carbon steel, or an alloy of iron or steel, as the base metal, and other metals may be used such as, for example, aluminum, stainless steel, copper, nickel, alloys of any of these, or the like; and employ alumina and/or zirconia as the ceramic material, other ceramic materials may also be used such as, for example, tungsten carbide, titanium carbide, zirconia-toughened alumina, partially stabilized zirconia ceramic, silicon carbide, silicon oxides, aluminum oxides with carbides, titanium oxide, brown fused alumina, combinations of any of these, or the like; ceramic materials are embedded in the base metal in the form of inserts formed of ceramic particles held together with an
- FIG 11 shows, diagrammatically, a second embodiment (54) of a stator impact block member (55), where, two support members (57)(58), here two laying bar members (57)(58), fixedly attached to the impact block member (55), stretching between the back side (56) and the drum wall, at a location outside the area where the back side (56) wears through completely (23), avoiding damage when the back side (21) wears through, here, an upper laying bar member (57) along the top face (60) and a bottom laying bar member (58) along the bottom face (62), creating a circumferential closed inner space (63) between the laying bar members (57)(58) stretching in continuous way along the drum wall construction (6).
- the laying bar members (57)(58) are provided with first attachment means (30)(31) fitting second attachment means (32)(33) carried by the drum wall construction (6), in a way essentially similar to the first embodiment of the sliding block (4) from figure 3, creating also here an essentially dove tail like attachment arrangement (45)(66)(67), such that movement of the impact block member (55) in downward and forward direction is hindered, such that the impact block member (55) is firmly but removable attached to the drum wall, such that such that collapse into the crushing chamber (not shown here) of the upper part (68) of the impact block member (55) is hindered by the upper laying bar member (57), and of the lower part (69) of the impact block member (55) by the bottom laying bar member (61). when an impact block member (55) wears through completely (28) between the laying bar members (57)(58).
- FIG 12 shows, diagrammatically, a third embodiment (70) of a stator impact block member (71), essentially similar to the second embodiment (54) of the impact block member (55), where the middle part of the laying bar members (57)(58) of the second embodiment (54) is removed, leaving two upper stub members (72)(73) and two bottom stub members (74)(75), such that a closed inner space (not shown here) can be created between the stub members (72)(73)(74)(75), which are each provided with an angled face attachment member (76)(77) and (78)(79) that fit the lock members (not shown here) that is carried by the drum wall ( not shown here), creating essentially dove tail like attachment arrangements (76)(77) and (78)(79), stretching both in the direction of the drum wall (not shown here) and in vertical direction, such that movement of the impact block member (71) in downward and forward direction is hindered, such that the impact block member (71) is firmly but removable attached to the drum wall, in a way
- Figures 13 and 14 show, diagrammatically, a fourth embodiment (80) of a stator impact block member (81), where the impact block member (81) is provided with a back plate member (82) that is fixedly attached a distance away to the back side (83) along the upper edge (84) and the bottom edge (85) of the back side (86) of the impact block (87) such that a closed inner space (88) is created between the back side (86) and the back plate member (82) inside the impact block member (81) that stretches around in essentially continuous circumferential way through the composed impact member (not shown here), which configuration hinders collapse when the impact block (87) wears through completely (89), because the back plate (82) holds the impact block (87) connected.
- the impact block member (81) is provided with a back plate member (82) that is fixedly attached a distance away to the back side (83) along the upper edge (84) and the bottom edge (85) of the back side (86) of the impact block (87) such that a closed inner space (88) is created between the back side (86)
- Figures 15 and 16 show, diagrammatically, a fifth embodiment (90) of a stator impact block member (91), where the support member (92) comprises at least two stub members (93)(94), at least one top stub member (93) that protrudes from the back side (95) into the direction of the drum wall construction (96) at a location near the top edge (97) of the back side (95), and at least one bottom stub member (94) that protrudes from the bottom side (98) in a downward direction at a location near the lower edge (99) of the back side (95), the top stub member (93) provided with a first top attachment means (100), the second top attachment means (101) comprising a strip member (102), carried by the drum wall construction (96), such that the first top attachment means (100) fits a second top attachment means (101), providing an essentially dove tail like back attachment assembly (103) locking the impact block member (91), the second bottom attachment means (101) presenting two lock openings (104)(105) that fit the bottom stub members
- Figures 17 and 18 show, diagrammatically, a sixth embodiment (105) of a stator impact block member (106), where, the impact face (107) of the impact block member (105) presents a relief (108), stretching around along the drum wall construction (not shown her), creating a composed impact face with essentially knurled configuration.
- the invention allows for other types of relief (109), that can be applied at shorter radial distance from the rotor to achieve a larger, more effective, angel of impact; and relief can also be applied at greater radial distance from the rotor to limit the velocity at which the particles move in the crushing house along the composed impact face, reducing the wear rate, however, possibly at certain expense of the impact intensity that is generated.
- Figures 19, 20, 21, 22, 23 and 24 show, diagrammatically, a seventh embodiment (109) of a stator impact block member (110), with a first instalment arrangement (111), according the invention, which is the preferred configuration, where the impact block members (110), detailed in figures 19, of the composed impact member (115) are positioned next to each other, stretching along the drum wall construction (112), each impact block member (110) carried on top (113) of at least two supporter elements (114), requiring no further attachment, because the impact block members (110) of the composed impact member (1 15) hinder each other to move in forward direction (116), towards the axis of rotation (not shown here)), and the support members (118) hinder the upper (119) and lower part (120) of the impact block (121) to break loose when the backside (122) of the impact block (121) wears trough completely (122), which provides a very simple instalment arrangement (111), detailed in figure 22.
- the impact block members (110) have only to be lifted with the aid of the lifting device (124), to be installed on top (113) of the supporter elements (114).
- the supporter elements (114) are here removable attached (not shown) to the drum wall construction (112), stretching along the bottom side (129) of the impact block member (110), along the radial plane (123) into the direction of axis of rotation (not shown here); preferably closer (125) to the axis of rotation (not shown here)) than (126) the point of gravity (127) of the impact block member (110), avoiding that the impact block members (110) move forward during instalment of the composed impact member (1 15), detailed in figure 23, and, also because wear develops along the inner side (128) of the bottom side (129), detailed in figure 20 and 21, possibly causing damage to the supporter elements (114); and the invention allows for different types of supporter elements (114), for example, bar members, rod members or plate members (only the latter shown here ).
- Figure 37, 38 and 39 show, diagrammatically, an eight embodiment (201) of a stator impact block member (202), with a second instalment arrangement (203), according the invention, which is also a preferred configuration, where, the support member (204) comprises here one standing notch member (205) and a standing notch chamber (209), the standing notch member (209), fixedly connected to the impact block (206), stretching in essentially vertical direction along a first associated standing radial side (207), the second associated standing side (208) provided with a notch chamber (209) that fits the standing notch member (205), such that the impact block members (202) can be installed next to each other, vertically dropped (210), creating a composed impact member (211), such that the upper part (212) and the lower part (213) of the impact block member (202) remain in place when the standing back side (214) of one impact blocks (206) wears through completely (215) between the standing radial sides (207)(208), the closed inner space stretching (216) in essentially continuous way around.
- the support member (204) comprises here one
- the notch member (205) might hinder positioning of ceramic inserts (not shown here) close along the associated radial side (207), when ceramic inserts have to be positioned at somewhat larger distance from the associated radial side (207), creating weaker areas between the impact block members (202), along the standing radial sides (207)(208) where wear (220) can progress faster; but casting techniques are available to solve this problem.
- the drum wall construction (221) is here provided with two wall members (222)(223) comprising two annular ring members (222)(223), stretching around along the drum wall construction (221), an upper annular ring (222) along the top edge (224) of the back side (214) and a lower annular ring (223) along the bottom edge (225) of the back side (214), such that the wall members (222)(223) do not become damaged when the impact block (206), or here impact block member (202) wears through completely (215) between the standing radial sides (222)(223) - creating the closed inner space (216) between the annular ring members (222)(223).
- FIGs 25, 26, 27 and 28 show, diagrammatically, an ninth embodiment (130) of a stator impact member (131), with a first embodiment of cage construction (133), according the invention, where, the impact block members (131) of the composed impact member (132) are carried with the aid of a cage construction (133), carried (134) by the drum wall construction (135), provided with a standing ring plate (136) and a reinforcement ring (137) stretching around a distance (138) away along the drum wall construction (135), to be liftable (134), the closed inner space (139) created between the impact block members (132) and the ring plate (136), and a supporter element (140), attached to the ring plate (136).
- the impact block members (131) of the composed impact member (132) are carried with the aid of a cage construction (133), carried (134) by the drum wall construction (135), provided with a standing ring plate (136) and a reinforcement ring (137) stretching around a distance (138) away along the drum wall construction (135), to be lift
- the impact block member (131), detailed in figures 25 and 26, is here along the backside (142) provided with a single standing support member (143), stretching in vertical direction along the centre of the back side (142), along the top edge (144) provided with first attachment means (145), at a location (152) outside the area (153) where the back side wears through (154), avoiding damage when the back side () wears through completely (155).
- the cage construction (133), detailed in figure 27, is along the upper edge (146) provided with an attachment opening (147) in the supporter element (140) provided with second attachment means (148), fitting the first attachment means (145), creating an essentially dove tail like attachment arrangement (146)(147), in vertical direction, such that movement of the impact block member (131) in downward and forward direction is hindered, such that the impact block member (131) is firmly but removable attached to the drum wall construction (135), the cage construction (133) with the impact block members (131) liftable into and out of the drum member (148), the standing ring plate (136) of the cage construction (133) being regarded as part of the drum wall construction (135).
- the impact block members (131) are here provided with a straight impact face (149), creating a composed impact face (150) with a polygon configuration (151).
- Figures 29, 30 and 31, show, diagrammatically, a second embodiment (156) of a cage construction (159) according the invention, here provided with the impact block member (110) of figure 19; where, the impact block members (157) of the composed impact member (158) are carried, with the aid of a cage construction (159), carried by the drum wall construction (160), liftable attached (170), provided with a standing ring plate (161) and a reinforcement ring (164) stretching around an instalment distance (162) away along the drum wall (173).
- the impact block members are similar to the impact block members (110) of the configuration of figure 19 (lifting device not shown), to which reference is made, and the closed inner space (163) is here created between the impact block members (157) and the ring plate (161)
- the cage construction (159), detailed in figure 30, is provided with supporter elements (165), attached to the ring plate (161), on top (166) of the reinforcement ring (164) and are preferably removable attached (not shown here) for exchange in case of damage, stretching along the bottom side (167) the impact block member (157), along the radial plane (167) into the direction of axis of rotation (0), closer (168) to the axis of rotation (0) than (174) the point of gravity (169) of the impact block members (157), for example bar members (165) shown here, or rod members or plate members, or an annular ring, the impact block members (157) positioned in the cage construction (159) next to each other, on top of the supporter elements (165), removable for exchange, creating a composed caged impact member (171), liftable into and out of the drum member
- Figures 32, 33, 34, 35 and 36 show, diagrammatically, a tenth embodiment (175) of a stator impact member (176), with a third embodiment of the cage construction (178), where, the impact block members (176) of the composed impact member (177) are carried with the aid of an annular ring construction (178) stretching along at least part of the top sides (1 9) of the impact block members (176), provided with lock plates (181), fixedly attached, stretching from the outer edge (182) of the annular ring construction (178) into the direction of the drum wall construction (183), provided with lock edges (185) stretching into the direction of the drum wall construction (183) providing second attachment means (184), creating an annular attachment ring (186), carried by the drum wall construction (183); the impact block member (176) provides with lock strip members (181), providing first attachment means (200) stretching along part of the top side (179), creating an open lock chamber (187), open (188) along the top side (179), open (189) into the direction of the axis of rotation (0), the lock strip members (181) of the annular attachment
- stator part members provided with closed inner space or spaces are, of course, possible.
- the embodiments of the impact members have been selected and described in order to describe the principles of the invention and the practical application possibilities thereof in the best possible way in order thus to enable others skilled in the art to make use in an optimum manner of the invention and the diverse embodiments with the various modifications suitable for the specific intended use; and the same applies for the stator impact members and anvil members with closed inner space according the invention.
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Abstract
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Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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NL1039422 | 2012-02-29 | ||
NL1039422 | 2012-02-29 |
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WO2013127507A1 true WO2013127507A1 (en) | 2013-09-06 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2013/000527 WO2013127507A1 (en) | 2012-02-29 | 2013-02-27 | Impact member for vertical shaft impact crusher |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220152619A1 (en) * | 2019-03-19 | 2022-05-19 | Sandvik Srp Ab | Abrasion resistant wear part for vsi crusher rotor |
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US3093329A (en) * | 1961-06-28 | 1963-06-11 | Thomas E Bridgewater | Breaker plate structure |
US4699326A (en) | 1984-06-22 | 1987-10-13 | Cedarapids, Inc. | Vertical shaft impact crusher with split tub |
EP0337137A2 (en) * | 1988-04-14 | 1989-10-18 | Alberto Pozzato | A hammer mill for crushing ore and the like materials |
US5639030A (en) | 1994-04-12 | 1997-06-17 | Nakayama Iron Works, Ltd. | Vertical shaft impact crusher and operating method therefor |
US5806774A (en) | 1996-02-27 | 1998-09-15 | Magotteaux International | Anvil for centrifugal impact crusher and circle of anvils equipped with such anvils |
WO2002007887A1 (en) | 2000-07-02 | 2002-01-31 | Van Der Zanden, Rosemarie, Johanna | Mill with streamlined space |
WO2004002629A1 (en) | 2002-06-28 | 2004-01-08 | Van Der Zanden, Rosemarie, Johanna | Collision member with collision surface relief |
US7854407B2 (en) | 2008-02-06 | 2010-12-21 | Stedman Machine Company | Low-profile housing for an impact crushing apparatus |
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2013
- 2013-02-27 WO PCT/EP2013/000527 patent/WO2013127507A1/en active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3093329A (en) * | 1961-06-28 | 1963-06-11 | Thomas E Bridgewater | Breaker plate structure |
US4699326A (en) | 1984-06-22 | 1987-10-13 | Cedarapids, Inc. | Vertical shaft impact crusher with split tub |
EP0337137A2 (en) * | 1988-04-14 | 1989-10-18 | Alberto Pozzato | A hammer mill for crushing ore and the like materials |
US5639030A (en) | 1994-04-12 | 1997-06-17 | Nakayama Iron Works, Ltd. | Vertical shaft impact crusher and operating method therefor |
US5806774A (en) | 1996-02-27 | 1998-09-15 | Magotteaux International | Anvil for centrifugal impact crusher and circle of anvils equipped with such anvils |
WO2002007887A1 (en) | 2000-07-02 | 2002-01-31 | Van Der Zanden, Rosemarie, Johanna | Mill with streamlined space |
WO2004002629A1 (en) | 2002-06-28 | 2004-01-08 | Van Der Zanden, Rosemarie, Johanna | Collision member with collision surface relief |
US7854407B2 (en) | 2008-02-06 | 2010-12-21 | Stedman Machine Company | Low-profile housing for an impact crushing apparatus |
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Publication number | Priority date | Publication date | Assignee | Title |
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US20220152619A1 (en) * | 2019-03-19 | 2022-05-19 | Sandvik Srp Ab | Abrasion resistant wear part for vsi crusher rotor |
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