| 摘要 |
PURPOSE:To increase durability of a filter cloth by forming a ring means stretching in a ring-shape from the hole of a filter plate in the radius direction in a manner to overlap said stretched sections and encircle the outer surface of the overlapped sections. CONSTITUTION:Center holes 36 of a filter cloth 30 disposed on both faces of a filter plate 6 are smaller than a center hole 6a of the filter plate 6, and center holes 36b of both filter cloths stretching in a ring-shape from the center hole 6a of the filter plate 6 to the radius direction are overlapped. Then, a ring- shaped mounting ring means 50 is mounted on said ring-shaped overlapped sections 36 of the filter cloth 30. The mounting ring means 50 has a first and second mounting rings 52 and 54 compatible on both side faces of the overlapped sections 36b, and the first mounting ring 52 is constituted of a ring-shaped plate disposed with its section roughly formed in L-shaped and the second mounting ring 54 is constituted of a ring-shaped plate disposed compatibly to the other side face of the ring-shaped overlapped section 36b.
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