Dispersing device and a method for dispersing

A shear-type dispersing device for dispersing a mixture of a slurry or a liquid by causing the mixture to flow by centrifugal force toward an outer circumference between a rotor, and a stator that is disposed to face the rotor, comprising:

• a container for receiving the dispersed mixture;
• a cover assembly that closes an upper opening of the container;
• and
• a stator that is fixed under the cover assembly;
• wherein in the stator a hole for inserting the rotary shaft is formed and a through-hole for supplying the mixture is formed outside of the through-hole,
• wherein the mixture is supplied to a gap between the stator and the rotor through the through-hole of the stator,
• wherein a circular groove is formed concentrically with the rotor on a surface of the rotor, which faces the stator, the groove being located at a position that corresponds to the through-hole that is formed in the stator.

A shear-type dispersing device for dispersing a mixture of a slurry or a liquid by causing the mixture to flow by centrifugal force toward an outer circumference between a rotor, and a stator that is disposed to face the rotor, comprising:

• a container for receiving the dispersed mixture;
• a cover assembly that closes an upper opening of the container;
• a stator that is fixed under the cover assembly;
• a rotor that is disposed to face a lower surface of the stator;
• a rotary shaft that rotates the rotor;
• and
• a bearing that is disposed in the cover assembly and is located above the stator to rotatably hold the rotary shaft;
• wherein the cover assembly has a part for holding the bearing and a part for holding the stator that is disposed under the part for holding the bearing,
• wherein a first vent-hole for supplying gas to the hole for inserting the rotary shaft of the stator is formed in the part for holding the stator,
• wherein a second hole for inserting the rotary shaft is formed in the part for holding the stator,
• wherein a second vent-hole for communicating outside the part for holding the stator is formed in a space that is located under the part for holding the bearing and over the second hole for inserting the rotary shaft, and
• wherein a pressure of gas that is supplied through the first vent-hole is higher than that in a space that is ventilated through the second vent-hole.