A comminuting device of biological material and relative method for comminuting and preparing cellular preparations are described.

A crusher having a substantially tubular casing, closed in an upper region by a cover and in a lower region by a base. The crusher also includes a rotating shaft, which is internal and coaxial to the casing, with multiple supporting elements, each element for supporting a number of crushing elements, being keyed to the shaft. The crushing elements have circular trajectories with a circumference that at least partially increases from the upper region toward the lower region of the crusher.

A crusher having a substantially tubular casing, closed in an upper region by a cover and in a lower region by a base. The crusher also includes a rotating shaft, which is internal and coaxial to the casing, with multiple supporting elements, each element for supporting a number of crushing elements, being keyed to the shaft. The crushing elements have circular trajectories with a circumference that at least partially increases from the upper region toward the lower region of the crusher.

A brewer's spent grain (BSG) grinder includes a charging tank connected to a grinding unit, the charging tank being equipped with a device for BSG moistening, and the grinding unit having an outlet for discharging grinded BSG. The grinding unit includes a stator and a rotor located coaxially with a gap defined between their working surfaces. A device for mixing and moving a mixture into the gap is fixed on a central part of an upper side of the rotor. A device for discharging grinded BSG is located under the rotor. The rotor is configured to allow staged grinding of BSG to obtain coarser and finer fractions of BSG at upper and lower stages of the rotor respectively. An upper part of the rotor is equipped with blades located around a circumference of the rotor, an outer surface of each blade being part of the working surface of the rotor.

A brewer's spent grain (BSG) grinder includes a charging tank connected to a grinding unit, the charging tank being equipped with a device for BSG moistening, and the grinding unit having an outlet for discharging grinded BSG. The grinding unit includes a stator and a rotor located coaxially with a gap defined between their working surfaces. A device for mixing and moving a mixture into the gap is fixed on a central part of an upper side of the rotor. A device for discharging grinded BSG is located under the rotor. The rotor is configured to allow staged grinding of BSG to obtain coarser and finer fractions of BSG at upper and lower stages of the rotor respectively. An upper part of the rotor is equipped with blades located around a circumference of the rotor, an outer surface of each blade being part of the working surface of the rotor.

A brewer's spent grain (BSG) grinder includes a charging tank connected to a grinding unit, the charging tank being equipped with a device for BSG moistening, and the grinding unit having an outlet for discharging grinded BSG. The grinding unit includes a stator and a rotor located coaxially with a gap defined between their working surfaces. A device for mixing and moving a mixture into the gap is fixed on a central part of an upper side of the rotor. A device for discharging grinded BSG is located under the rotor. The rotor is configured to allow staged grinding of BSG to obtain coarser and finer fractions of BSG at upper and lower stages of the rotor respectively. An upper part of the rotor is equipped with blades located around a circumference of the rotor, an outer surface of each blade being part of the working surface of the rotor.

A grinding device comprises a grinding housing with mutually co-acting grinding bodies. A lower of the two grinding bodies is both driven and axially adjustable for the purpose of setting a grind size. An upper grinding body is removable. A grind size of the grinding device can be adjusted in absolute manner between a first extreme position and a second extreme position, corresponding to a fixed setting range between a minimal clearance between the two grinding surfaces and a maximum clearance between the two grinding surfaces. An extreme position of the adjustable grinding body is imposed by a stop which is encountered by the adjusting means in the relevant extreme position. A coffee machine uses the absolute grind size and/or a fine-tuning for an optimal contact time between coffee and through-flowing water.

A grinding device comprises a grinding housing with mutually co-acting grinding bodies. A lower of the two grinding bodies is both driven and axially adjustable for the purpose of setting a grind size. An upper grinding body is removable. A grind size of the grinding device can be adjusted in absolute manner between a first extreme position and a second extreme position, corresponding to a fixed setting range between a minimal clearance between the two grinding surfaces and a maximum clearance between the two grinding surfaces. An extreme position of the adjustable grinding body is imposed by a stop which is encountered by the adjusting means in the relevant extreme position. A coffee machine uses the absolute grind size and/or a fine-tuning for an optimal contact time between coffee and through-flowing water.

Disclosed herein is a pair of millstones for grinding coffee beans. The pair of millstones includes: a lower millstone configured such that a shaft hole is formed at the center thereof, a plurality of discharge grooves configured to discharge coffee beans to edges while grinding the coffee beans is formed in the top surface thereof, and an accommodation portion configured to accommodate coffee beans falling down through the discharge grooves is provided outside the discharge grooves; a shaft pin adapted to be fitted into the shaft hole of the lower millstone, and configured such that transfer paths are formed in the outer surface thereof; and an upper millstone configured such that an insertion hole is formed at the center thereof, an introduction hole configured to receive coffee beans extends upward from the insertion hole, and a grip is provided on one side thereof.

Disclosed herein is a pair of millstones for grinding coffee beans. The pair of millstones includes: a lower millstone configured such that a shaft hole is formed at the center thereof, a plurality of discharge grooves configured to discharge coffee beans to edges while grinding the coffee beans is formed in the top surface thereof, and an accommodation portion configured to accommodate coffee beans falling down through the discharge grooves is provided outside the discharge grooves; a shaft pin adapted to be fitted into the shaft hole of the lower millstone, and configured such that transfer paths are formed in the outer surface thereof; and an upper millstone configured such that an insertion hole is formed at the center thereof, an introduction hole configured to receive coffee beans extends upward from the insertion hole, and a grip is provided on one side thereof.