| 摘要 |
<p>PURPOSE: To easily attach and remove a filter medium membrane to and from a holding member by fitting plural elastic cord-like filter mediums spreading between parallel beams and an expanding frame part formed at an end part of each beam and having a prescribed outer diameter and using an elasticity of the cord-like filter medium. CONSTITUTION: The beam 2 mounted at the holding member 4 corresponding to each other is abutted at a peripheral part of a mounting hole 5 of the holding member 4 by being drown with each other by the elasticity of the cord-like filter medium 6, and the expanding frame part 3 on the beam 2 and a near part to the cord-like filter medium 6 at the peripheral part of the mounting hole 5 of the holding member 4 are superposed on each other in a longitudinal direction of each beam 2. Thus, the beam 2 and the cord-like filter medium 6 fixed to the beam 2 are held tightly with the holding member 4. In this way, a filter medium membrane 1 can be mounted easily and surely to the holding member 4. At the time of dismantling, if either of beams 2 of the filter medium membrane 1 is pulled away from the other beam 2 against the elasticity of the cord-like filter medium 6 and the beam 2 and the mounting hole 5 are aligned, the frame part 3 is drawn easily from the mounting hole 5.</p> |
