| 摘要 |
Apparatus (14, 14a) for treating liquids flowing through a pipe (10, 10a) is formed by clamping magnet units (16) of the desired number to the pipe (10, 10a). The magnet units (16) are formed by permanent magnet structures (20) held in a plastic casing (18) by a potting compound (36). The permanent magnet structure (20) includes two pairs of permanent magnets (24, 26, 28, 30) having first surfaces (24N, 26N, 28S, 30S) projecting beyond the potting compound (36) and the open side (18d) of the casing (18) and second surfaces (24S, 26S, 28N, 30N) directly abutting with the upper surface of a ferromagnetic strip (22) providing a flux path between the second surfaces (24S, 26S, 28N, 30N) of the permanent magnets (24, 26, 28, 30). The magnet units (16) are clamped so that the first surfaces (24N, 26N, 28S, 30S) of the permanent magnets (24, 26, 28, 30) directly bear against the outside of the pipe (10, 10a). The first surfaces (24N, 26N, 28S, 30S) of the permanent magnets (24, 26, 28, 30) are physically configured to have a more intimate contact with the pipe (10, 10a) to overcome the loss of effectiveness experienced when the pipe (10, 10a) is formed of magnetic material.
|
