Particle measuring device for granule processing apparatus and particle measuring method

A particle measurement device for a powder or granular material processing apparatus, comprising:

• a drawing tube for drawing out powder or granular material, with one end portion being arranged in an inside of a container forming part of the powder or granular material processing apparatus and containing the powder or granular material to be measured, and with the other end portion being communicated with said one end portion and positioned outside of the container;
• a gas injection nozzle for injecting high pressure gas from the inside of the container into the drawing tube, so as to introduce the powder or granular material within the container into the drawing tube;
• an adhesive film with an adhesive surface being arranged opposed to an opening of an end surface of said drawing tube on the side of the outside of the container, so as to capture, with said adhesive surface, the powder or granular material which has passed the drawing tube;
• an image pick-up means for photographing the powder or granular material captured by the adhesive surface of the adhesive film;
• an information processing means for processing image information of the powder or granular material obtained by said image pick-up means;
• a gas communicating port communicated with said drawing tube in a neighborhood of the end portion of said drawing tube;
• and
• said gas communicating port being housed within a box together with said adhesive film and the end portion of the drawing tube opposed to the adhesive film;
• said box having a gas feed port for introducing a gas having a higher pressure than that existing inside of the container into the box through said gas feed port.