| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive reinforcement mounted replaceably to a spacer in an existing filter frame.SOLUTION: A reinforcement is mounted on each spacer 10 provided protrusively at a prescribed interval on the circumference of a filter frame 1 arranged in the interposed state between filter plates 2. The reinforcement comprises a U-shaped metal plate formed by arranging in parallel, a pair of reinforcement plates 9a, 9b capable of abutting on the filter plates 2, in the adhering state onto facing surfaces 10a, 10b to the filter plates 2 in the spacer, and the spacer 10 is sandwiched between the reinforcement plates 9a, 9b detachably. |
