Filtering unit, especially for fluid plastics, comprises a housing with supply and removal channels, sieve carriers, and filter elements

An arrangement for filtering a fluid, especially a fluid plastic, comprises a housing (1) with a supply channel (2), a removal channel (3), and back flush channels (9,10). Sieve carriers are located laterally with respect to the flow direction, and contain filter elements (5,6) in a chamber which can be connected to the supply and removal channels. An arrangement for filtering a fluid, especially a fluid plastic, comprises a housing (1) with a supply channel (2), a removal channel (3), and back flush channels (9,10). Sieve carriers are located laterally with respect to the flow direction, and contain filter elements (5,6) in a chamber which can be connected to the supply and removal channels. A compressing piston is located in a channel between the sieve chamber and the removal channel, which pushes the material through the filter element when the carrier is in the back flushing position. The arrangement has at least two filter elements and two pistons, and at least two channels and two back flush channels. A pressuriser is located in the supply channel, which maintains a constant process pressure. The pressuriser is a pump. Die Erfindung bezieht sich auf eine Vorrichtung zum Filtrieren eines Fluids, insbesondere eines verflüssigten Kunststoffes, mit einem Gehäuse mit Rückspülkanal und Siebträger sowie Filterelement, wobei, um die Rückspülwirkung zu beschleunigen und zu verbessern, ein oder mehrere Verdrängerzylinder vorgesehen sind, die aus der Produktion entnommenes Gut mit einstellbarem hohen Druck und Geschwindigkeit dem zu reinigenden Sieb von der Reinsiebseite zur Schmutzsiebseite hin zuführen, wobei ein zusätzlicher Druckerzeuger für konstanten Prozeßdruck Sorge trägt.