| 摘要 |
A vane type meter includes an outer meter housing in which a cup-shaped impeller housing and cup-shaped counter housing superimposed on the impeller housing are mounted. The impeller housing is provided in the peripheral wall thereof with a plurality of rectangular, inwardly tapering inlet channels extending substantially tangential to the inner surface of the peripheral wall and with a plurality of upper outlet channels, of a number equal to that of the inlet channels and constructed substantially in the same manner as the latter. An impeller is arranged in the interior of the cup-shaped impeller housing for rotation about its axis and having a shaft extending into the counter housing. A plurality of radially extending ribs, equal in number to that of the inlet channels, project from the bottom wall of the impeller housing upwardly towards the impeller and a further plurality of radially extending ribs equal in number to that of the first mentioned plurality of ribs, project downwardly from the bottom of the counter housing toward the impeller. |
