| 摘要 |
<p>According to the invention a centrifugal self-priming jet pump (1) is obtained, comprising a pump casing (2, 30, 40, 50, 60, 70) which presents a shape lacking any surfaces with undercuts and in which the nozzle-ejector unit (19) is mounted on seats (15, 20, 31, 36, 49, 46, 59, 56, 69, 66, 79, 76) which are coaxial with the axis (21) of rotation of the impeller (22). Said nozzle-ejector unit (19) presents a diaphragm (7, 32, 42, 52, 62, 72), arranged transversally, which divides the inner volume of the pump casing (2, 30, 40, 50, 60, 70) so as to create a suction chamber (3) and a pressure chamber (5) and a frontal collar (10, 37, 47, 57, 67, 77), which is suited to divide the suction chamber (3), so as to create a channel (24) and a high-pressure chest (11, 35, 45, 55, 65, 75) for supplying the driving medium into the nozzle (12), arranged eccentrically in the collar (10, 37, 47, 57, 67, 77) with an anti-vortex arrangement in the high-pressure chest (11, 35, 45, 55, 65, 75). Said pump (2, 30, 40, 50, 60, 70) casing presents its suction connection (4, 34, 44, 54, 64, 74) positioned at the front end of the pump (1) above the collar (10, 37, 47, 47, 67, 77) and is partially or completely circumscribed by the diaphragm (7, 32, 42, 52, 62, 72).</p> |
