To make a crushing unit freely attachable/detachable in a hammer mill type disposer apparatus.

The crushing unit 50 is housed in a hopper 20. In the hammer mill type disposer apparatus, the crushing unit 50 is constituted of a turntable 52, a hammer 54 which is provided at an upper surface thereof and is freely oscillating and a crushing blade 58 which is fixed to the hopper. A pivotally supporting means 60 is installed at a top end part of a driving shaft 42. Engagement and release of an engagement ball 63 with/from an annular groove 62 is performed by moving a rock ring 66 forward and backward. The turntable 52 can be pulled out from the hopper 20 by removing the pivotally supporting means 60 from the driving shaft. Thereby cleaning of the crushing unit 50 or the hopper 20 or the like is easy.

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