| 摘要 |
<p>A high speed water flow filter, comprising: at least one generally tubular filter element having a wall provided with filtration passages, this element having at least one end open to the water flow, means for producing, at least during a filtration operation, a difference of pressure of the water inside and outside one end of the filtration element for compelling water being filtered to pass through said filtration passages around the end, said filtration passages being formed of an increasing caliber in the axial direction of said filtration element, from the end where said difference of pressure is created towards its other end.</p> |
