Vibrating sieve machine

A vibrating sieve machine comprising:

• a sieve frame including a plurality of cylindrical separable sieve frames that are vertically separable from each other;
• and
• a mesh member configured to be held by the sieve frame, wherein vibrations are applied through the sieve frame to powder to be classified that is placed on the mesh member for sieving and classification,
• the mesh member includes
• a circular annular mesh member frame having an outer peripheral surface and configured to be sandwiched by the separable sieve frames with the outer peripheral surface exposed outward in a radial direction of the separable sieve frames,
• a reinforcement mesh stretching across the mesh member frame,
• a sieve mesh configured to cover the reinforcement mesh, hanging down over an outer peripheral surface of the mesh member frame, and
• a fastening band configured to be attached to the outer peripheral surface of the mesh member frame so as to sandwich the sieve mesh between the fastening band and the outer peripheral surface of the mesh member frame,
• wherein
• the fastening band includes
• a band member configured to be wrapped around the outer peripheral surface of the mesh member frame so as to sandwich the sieve mesh between the band member and the outer peripheral surface of the mesh member frame, and
• a band diameter adjustment mechanism attached to an outer peripheral surface of the band member and configured to adjust the size of a band diameter of the band member,
• wherein
• the band diameter adjustment mechanism includes
• a housing attached to an end of the band member,
• a spindle rotatably supported by the housing and having worm teeth disposed in the housing, and
• a plurality of worm grooves disposed at the other end of the band member and configured to engage with the worm teeth, and
• the fastening band is allowed to be removed from the mesh member frame by operating the spindle so as to disengage the worm teeth from the worm grooves.

A vibrating sieve machine comprising:

• a sieve frame including a plurality of cylindrical separable sieve frames that are vertically separable from each other;
• and
• a mesh member configured to be held by the sieve frame, wherein
• vibrations are applied through the sieve frame to powder to be classified that is placed on the mesh member for sieving and classification,
• the mesh member includes
• a circular annular mesh member frame having an outer peripheral surface and configured to be sandwiched by the separable sieve frames with the outer peripheral surface exposed outward in a radial direction of the separable sieve frames,
• a reinforcement mesh stretching across the mesh member frame,
• a sieve mesh configured to cover the reinforcement mesh, hanging down over an outer peripheral surface of the mesh member frame, and
• a fastening band configured to be attached to the outer peripheral surface of the mesh member frame so as to sandwich the sieve mesh between the fastening band and the outer peripheral surface of the mesh member frame,
• wherein
• the mesh member frame has a sandwich surface portion configured to be sandwiched by the separable sieve frames, and the sandwich surface portion has a warped shape such that the sandwich surface portion inclines upward in a radially outward direction from the center of the mesh member frame,
• the mesh member frame has an outer diameter of 400-1140 mm and an inner diameter of 352-1080 mm, and
• a magnitude of warpage of the mesh member frame is defined by a height difference between one end and the other end of the sandwich surface portion in the radial direction of the mesh member frame, and the height difference is 0.5-1.5 mm.

A vibrating sieve machine comprising:

• a sieve frame including a plurality of cylindrical separable sieve frames that are vertically separable from each other;
• and
• a mesh member configured to be held by the sieve frame, wherein
• vibrations are applied through the sieve frame to powder to be classified that is placed on the mesh member for sieving and classification,
• the mesh member includes
• a circular annular mesh member frame having an outer peripheral surface and configured to be sandwiched by the separable sieve frames with the outer peripheral surface exposed outward in a radial direction of the separable sieve frames,
• a reinforcement mesh stretching across the mesh member frame,
• a sieve mesh configured to cover the reinforcement mesh, hanging down over an outer peripheral surface of the mesh member frame, and
• a fastening band configured to be attached to the outer peripheral surface of the mesh member frame so as to sandwich the sieve mesh between the fastening band and the outer peripheral surface of the mesh member frame,
• wherein
• the mesh member frame has a sandwich surface portion configured to be sandwiched by the separable sieve frames, and the sandwich surface portion has a warped shape such that the sandwich surface portion inclines upward in a radially outward direction from the center of the mesh member frame.