| 摘要 |
A mineral breaker including a pair of breaker drum assemblies rotatably hous ed in a housing with their axes parallel, each drum assembly including circumfèrentially extending groups of teeth, the groups being spaced axially along the drum assembly to define a circumfèrentially extending channel between adjacent circumfèrential groups of teeth, the drum assemblies being arranged such that each circumferential group of teeth on one drum assembly is located to enter a circumfèrentially extending channel between a pair of neighbouring circumfèrential groups of teeth on the other drum assembly, the cross-sectional shape and size of each tooth and channel being complementary such. that the sides and tip of a tooth when entering a channel are closely spaced from the sides and bottom of the channel, and an elongate breaker bar extending longitudinally in a direction parallel to the axes of the drum assemblies, the breaker bar being located with its longitudinal axis positioned inbetween and beneath the axes of rotation of the drum assemblies , the breaker bar including a plurality of break-er teeth spaced along its length, each breaker tooth of the breaker bar projecting upwardly into a channel defined between a pair of circumfèrential groups of teeth on one of the drum assemblies, each breaker tooth being of a size and shape complementary to the channel into which it projects so as to be closely spac ed from the sides and bottom of the channel.
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