Abstract: The invention relates to a dirt precipitator (100) for a highly viscous medium, having a housing comprising a front housing element (30; 30?) that comprises at least one inlet channel (33) and a rear housing element (20) that comprises at least one outlet channel (23), and having a screen wheel (10; 10?) rotatably mounted between the housing elements (20, 30; 30?) having a number n of screen positions disposed in a ring zone, on each of which at least one screen opening (11.1, . . . , 11.12) having at least one screen insert element is provided. The inlet channel (33), the outlet channel (23), and the screen opening (11.1, . . . , 11.12) are disposed flush one after the other in at least one working position and form a flow channel. In all positions of the screen wheel (10; 10?), more than 50% of the screen openings (11.1, . . . , 11.12) are always able to be permeated, and are impinged by flow from at least one inlet channel and from which at least one outlet channel leads.

Abstract: A plate filtering device (10) for plastic melts has at least two stationary housing components (7, 9) with a movable plate (4) with a filter insert (5) disposed between them. A locking bushing (6) that extends up to the movable plate is placed at the downstream housing component (9), and its inner recess forms a part of the flow channel. A seal bushing (3) that can be pressed against the movable plate (4) and/or the filter insert (5) is located in movable fashion in the front housing component (7). A funnel area (3.2) is formed on the side facing away from the filter insert (5). A sealing ring (2) is located between the sealing bushing (3) and a retaining ring (1). The sealing ring exhibits at least one angled conical surface (2.1) and one face area (2.2) that is oriented at a right angle to the direction of fluid flow. At the seal bushing (3), an effective pressure area (3.1, 3.1?, 3.1?) that extends into the flow channel (8) is formed within the inner width of the sealing ring (2).

Abstract: A plate filtering device (10) for plastic melts has at least two stationary housing components (7, 9) with a movable plate (4) with a filter insert (5) disposed between them. A locking bushing (6) that extends up to the movable plate is placed at the downstream housing component (9), and its inner recess forms a part of the flow channel. A seal bushing (3) that can be pressed against the movable plate (4) and/or the filter insert (5) is located in movable fashion in the front housing component (7). A funnel area (3.2) is formed on the side facing away from the filter insert (5). A sealing ring (2) is located between the sealing bushing (3) and a retaining ring (1). The sealing ring exhibits at least one angled conical surface (2.1) and one face area (2.2) that is oriented at a right angle to the direction of fluid flow. At the seal bushing (3), an effective pressure area (3.1, 3.1?, 3.1?) that extends into the flow channel (8) is formed within the inner width of the sealing ring (2).

Abstract: A process for granulating plastics having a plastic in a liquid bath of over 100° C. Wherein the liquid bath is a water bath and is in a pressurized-vessel pressure system. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: A filter device for extruders and injection moulding machines designed to process thermoplastics, comprising filter elements that are fitted in at least two separate ducts of a housing between at least one main admission duct and one main exit duct and are interchangeably mounted in sieve carrier bolts in sieve openings that can be moved inwards and outwards with said sieve carrier bolts in the respective bore hole of the housing. At least one locking mechanism is provided in the vicinity of the main admission duct upstream from the sieve carrier bolts. When in a flow position, the locking mechanism does not impede the flow of plastic from the main admission duct to the filter elements.

Abstract: The invention relates to a filter device for extruders and injection-molding machines for the continuous processing of thermoplastic, the throughflow bore in the screen plunger being of a round design in the region of the inlet side and of the screen chamber and narrowing ovally following on from the rear side of the screen pack, the long axis of the oval extending in the direction of the displacement direction of the screen plunger.