| 摘要 |
<p>The invention relates to a system which includes a filtering surface (1) connected with an impulse pump (2) on the intake end thereof for the fluid to be filtered (3), including a pressure-loss valve (13) or an overpressure valve and a flow-limiting controller (12) arranged at the outlet of the filtering surface, optionally including a back flush pump; in the event of being used for tangential filters the pressure-loss valve (13) or the overpressure valve is arranged at the outlet of the filtering surface (1), whereas in blind filters the pressure-loss or overpressure valve (13) is arranged at the intake of the filtering surface (1). A more inexpensive system is achieved which saves on energy consumption. Furthermore, the filtering surface become protected against the operating pressure, in which the impulse pump operates at the design point without increasing the flow or the pressure and the pressure-loss or overpressure valve has a fixed value that cannot vary without action external to the system.</p> |
