Device for diluting viscous substance

A device for diluting a viscous substance, comprising:

• a vessel having a dilution chamber;
• a viscous substance supply portion provided in the vessel for supplying the viscous substance to the dilution chamber;
• a first rotor and a second rotor rotatably provided in the dilution chamber of the vessel for finely fragmenting the viscous substance supplied to the dilution chamber by rotation to form a small fragment group comprising a number of small fragments of the viscous substance;
• a diluent supply portion provided in the vessel for supplying a diluent to the small fragment group formed by rotation of the rotor first and second rotors in the dilution chamber;
• a member for attachment provided in the dilution chamber of the vessel and configured to be attached by the small fragments of the viscous substance such that the attached small fragments of the viscous substance are diluted with the diluent thereby decreasing in viscosity of the viscous substance;
• and
• a reservoir chamber for reserving the viscous substance diluted by the contact between the small fragment group and the diluent,
• wherein the second rotor has a conical shape with an inner diameter that increases in a direction from a lower portion to an upper portion of the device and an outer diameter that increases in the direction from the lower portion to the upper portion of the device, the second rotor defining a re-dilution rotary portion for dividing the viscous substance reserved in the reservoir chamber into small fragments again by rotation and bringing the small fragments and the diluent in contact with each other again so as to further dilute the viscous substance, and
• wherein a suction portion is provided for sucking up the diluted viscous substance reserved in the reservoir chamber when the second rotor rotates, in a manner to penetrate the lower portion of the second rotor in a thickness direction thereof.