Ice crushing device and refrigerator

An ice crushing device, comprising:

• a housing assembly comprising a housing and an ice bucket supported in the housing;
• a driver for driving the ice bucket to rotate;
• an ice crusher disposed in the ice bucket;
• wherein the housing assembly further comprises an ice-discharging plate provided at a bottom of the ice bucket, the ice-discharging plate is provided with an ice-discharging port communicated with the ice bucket, ice cubes prepared by an ice maker are discharged out of the ice-discharging port after being crushed in the ice bucket by the ice crusher, wherein the ice crusher comprises an ice cutter shaft fixed with respect to the housing, and several movable ice cutters and several fixed ice cutters disposed on the ice cutter shaft at an interval, each movable ice cutter comprises three blades evenly distributed in the circumferential direction, the ice crusher further comprises three ice agitating rods connected to the ice cutter shaft, the three ice agitating rods are connected to at one end of the ice cutter shaft away from the ice-discharging port, the three ice-agitating rods are fixed corresponding one to one with the three blades and relative to the circumferential direction, and at least one of the blades or one of the ice agitating rods is fixed relative to circumferential direction of the ice bucket;
• wherein the driver comprises a motor and a cylindrical gear driven by the motor;
• wherein the housing comprises a first portion that houses the ice bucket and a second portion in which the driver is mounted;
• wherein the housing assembly further comprises a bottom plate, a bottom of the second portion is open, the bottom plate covers the bottom of the second portion to seal the cylindrical gear between the second portion and the bottom plate, the bottom of the ice-discharging plate is provided with a protrusion at a position corresponding to the groove, the bottom plate is provided with a recess, and the protrusion is snap fitted in the recess.