Grinder facilitating adjustment of grinding fineness

A grinder with granularity adjusting mechanism, comprising a container for holding condiments and a grinding head assembly connected to the container for grinding the condiments;

• wherein the grinding head assembly comprises:
• a driving component mounted on top of the container, the driving component having an axis;
• a female grinding head rotatably mounted on the driving component, the female grinding head having a first through hole, the driving component passing through the first through hole, the first through hole defining an inner wall;
• a male grinding head placed inside the first through hole and engaged to the driving component and movable along the axis of the driving component, the male grinding head having a peripheral wall;
• an adjusting knob, with a connecting portion, engaged to the driving component, the connecting portion having a height,
• the inner wall of the first through hole and the peripheral wall of the male grinding head are provided with matching grinding teeth,
• the adjusting knob changes a gap between the male grinding head and the female grinding head by moving axially the male grinding head, and
• the driving component further comprises a connecting seat and a connecting rod mounted on the connecting seat, the male grinding head defining a second through hole adapted for the connecting rod passing through, the second through hole is threaded for connecting to the adjusting knob, and a spring is provided between the male grinding head and the connecting seat for pushing the male grinding head away from the connecting seat.