Abstract:
A method of crushing material comprises the steps of feeding a first flow of material (M1) to be crushed to a rotor (1) rotating around a vertical axis, in said rotor (1) accelerating said first flow of material towards an impact wall section (76), and feeding a second flow of material (M2) to be crushed into the path of the accelerated first flow of material (M1). The second flow of material (M2) is fed in a direction having a substantially tangential component in relation to the rotor (1), such that the second flow of material (M2) will have a substantially tangential component of movement in relation to the rotor (1) when reaching the path of the first flow of material (M1). A crusher is adapted to feed the second flow of material (M2) such that it will have a substantially tangential component of movement in relation to the rotor (1) when reaching the path of the first flow of material (M1).
Abstract:
A horizontal shaft impact crusher comprises a crusher housing (2) having an inlet (8) for material to be crushed, an outlet (10) for material that has been crushed, an impeller (4) being mounted on a horizontal shaft (6) in the crusher housing (2) and being operative for rotating around a horizontal axis, a curtain (28) against which material accelerated by the impeller (4) may be crushed, and an adjustment bar (44) for adjusting the position of said curtain (28) relative to the impeller (4). The crusher is further provided with a cross beam (84) to which said adjustment (44) bar is connected, said crossbeam (84) being adjustable relative to the impeller (4), and a curtain position indicator device (85) indicating the position of the cross beam (84) relative to the impeller (4), thereby indicating the position of the curtain (28) relative to the impeller (4).
Abstract:
A vertical shaft impact crusher comprises a rotor (1), adapted for rotating about a substantially vertical axis for accelerating a flow of material to be crushed; a housing, comprising a circumferential impact wall section against which the accelerated flow of material may be crushed; a feed tube (46), adapted for vertically feeding a flow of material to be crushed into the rotor (1); and a feeding chamber (21), defined by a feeding chamber side wall (22) and adapted for vertically feeding a flow of material into the feed tube (46). A first door (56) is provided for opening and closing an aperture (54) in the feeding chamber side wall (22), such that said feed tube (46) may be removed from said feeding chamber (21) via said first aperture (54).
Abstract:
A wear tip holder, for holding a wear tip adjacent to an outflow opening of a vertical rotor wall of a rotor of a VSI crusher, comprises a mounting plate (44) for mounting the wear tip holder (32) to said rotor wall, the mounting plate (44) having a mounting face for facing the rotor wall to which it is to be mounted and a wear face (54) for facing the interior of the rotor. The wear face (54) is provided with at least one material retention hole (58) for retaining, at the wear face (54), at least one of a wear-resistant insert and material to be crushed.
Abstract:
A vertical shaft impact crusher comprises a rotor for accelerating a first flow of material to be crushed, a first feed means for feeding the first flow of material to the rotor, a housing against which the accelerated first flow of material may be crushed, and a second feed means for feeding a second flow of material to be crushed into the path of the accelerated first flow of material. The second feed means comprises an inner hopper (8) and an outer hopper (10). An outlet (14) is formed in said inner hopper (8) for allowing said second flow of material to enter a space (12) formed between said inner and outer hoppers (8, 10). A slide plate (36) is located in said space (12) adjacent to the outlet (14), the slide plate (36) being inclined in a direction being substantially tangential in relation to the rotor.
Abstract:
An inner shell (4) has a first part of a lug-notch arrangement, which first part is arranged to co-operate with a second part of the arrangement to prevent rotation of the inner shell (4) relative to a crushing head (3). The inner shell (4) has a contact surface in its upper portion and is arranged to be pressed towards the lower portion (10) of the crushing head (3) by a pressing force which is obtained by tightening at least two threaded bolts, which are arranged in the upper portion (12) of the crushing head (3) such that their longitudinal direction is substantially parallel to the symmetry axis (S) of the crushing head (3).
Abstract:
A wear tip holder, for holding a wear tip adjacent to an outflow opening of a vertical rotor wall of a rotor of a VSI crusher, comprises a mounting plate for mounting the wear tip holder (32) to said rotor wall, the mounting plate having a mounting face for facing the rotor wall to which it is to be mounted; and, opposite the mounting face, a wear face for facing the interior of the rotor; a wear body, connected to said mounting plate, the wear body being provided with an elongate wear tip recess for holding the wear tip; and at least one material retention groove (58) extending along the wear tip recess at a position upstream, as seen in a direction of an intended flow of material to be crushed, of the wear tip recess, the material retention groove (58) having an upstream groove wall and a downstream groove wall, said downstream groove wall forming an acute angle with the wear face for retaining material (70) to be crushed.
Abstract:
A replaceable distributor plate (18), adapted for protecting a lower horizontal disc of a rotor of a vertical shaft impact crusher, comprises a first 5 portion (74a-f) of a bayonet joint, said first portion (74a-f) being adapted for cooperating with a second portion (50a) of said bayonet joint, said second portion (50a) being associated with the lower horizontal disc.
Abstract:
A vertical shaft impact crusher comprises a rotor for accelerating a first flow of material to be crushed, a first feed means for feeding the first flow of material to the rotor, a housing comprising a circumferential impact wall section (26) against which the accelerated first flow of material may be crushed, and a second feed means for feeding a second flow of material towards a distributing wall section (24) of said housing and further into the path of the accelerated first flow of material. A cavity ring separates said impact wall section (26) from said distributing wall section (24). The cavity ring comprises at least two ring segments (52). Supports (44, 46) are provided for supporting the ring segments (52). A locking device (80) is provided for pressing the ring segments (52) towards at least one of said supports (44, 46). Elected for publication.
Abstract:
A wear tip holder, for holding a wear tip adjacent to an outflow opening of a vertical rotor wall of a rotor of a VSI crusher, comprises a mounting plate (44) for mounting the wear tip holder (32) to said rotor wall, the mounting plate (44) having: - a mounting face (56) for facing a segment of the rotor wall to which it is to be mounted; - a wear face, opposite to the mounting face (56), for facing the interior of the rotor; and - a side wall (58, 58a-c) extending between said mounting face (56) and said wear face, the side wall (58, 58a-c) comprising a material retention surface (62, 62a-c) facing, when in use, said rotor wall segment, thereby allowing material to be trapped under the material retention face (62, 62a-c).