| 摘要 |
In the device for mounting a separation membrane element in a separation membrane module, a sealing member is constituted of a plurality of notched circular packings made of graphite, for example, each having a notched circular shape as viewed in a plan view. The plurality of notched circular packings are fitted on an upper end portion of the separation membrane element in a state where the notched circular packings are made to overlap with each other in plural stages, notched portions of the notched circular packings arranged adjacent to each other vertically are arranged at positions different from each other as viewed in a plan view, the notched circular packings in plural stages are received by the inwardly projecting annular receiving portion in the mounting hole, the notched circular packings in plural stages are pressed to the annular receiving portion by threaded engagement of the press fitting thus applying sealing. |
| 主权项 |
1. A device for mounting a separation membrane element in a separation membrane module (1) where the separation membrane module (1) includes a casing (2) having a tube plate (10), a plurality of tubular separation membrane elements (3) which are mounted on the tube plate (10) in a suspended manner and parallel to each other, and a press fitting (20) for fixing the respective tubular separation membrane elements (3) to the tube plate (10) with a sealing member sandwiched therebetween, a mounting hole (11) is formed in a separation membrane element mounting portion of the tube plate (10) in a penetrating manner, an inwardly projecting annular receiving portion (12) is formed on a lower portion of an inner peripheral surface of the mounting hole (11), a female threaded portion (14) is formed on an upper portion of the inner peripheral surface of the mounting hole (11), the press fitting (20) is constituted of a top wall (21) having a gas passing hole (23) and a cylindrical downwardly extending wall (22) which is contiguously formed with an outer peripheral portion of the top wall (21), and a male threaded portion (24) is formed on an outer peripheral surface of the cylindrical downwardly extending wall (22), wherein
the sealing member is constituted of a plurality of notched circular packings (7) each having a notched circular shape as viewed in a plan view, an upper end portion (3a) of the separation membrane element (3) is made to pass through the mounting hole (11) formed in the tube plate (10), the plurality of notched circular packings (7) are fitted on an outer peripheral surface of the upper end portion (3a) of the separation membrane element (3) in the inside of the mounting hole (11) in a state where the notched circular packings (7) are made to overlap with each other in plural stages, notched portions (8), (8) of the notched circular packings (7a), (7b) arranged adjacent to each other vertically are arranged at positions different from each other as viewed in a plan view, the notched circular packings (7) are received by the inwardly projecting annular receiving portion (12) formed on the lower portion of the inner peripheral surface of the mounting hole (11) formed in the tube plate, the cylindrical downwardly extending wall (22) of the press fitting (20) is fitted in the mounting hole (11) formed in the tube plate (10), the male threaded portion (24) formed on the press fitting (20) is threadedly engaged with the female threaded portion (14) formed on the mounting hole (11), the plurality of notched circular packings (7) are pressed to the annular receiving portion (12) formed on the lower portion of the peripheral surface of the mounting hole (11) by a distal end portion of the cylindrical downwardly extending wall (22) of the press fitting (20), and sealing is applied between the inner peripheral surface of the mounting hole (11) and the outer peripheral surface of the upper end portion (3a) of the separation membrane element (3) by means of the notched circular packings (7). |
