B - Operations – Transporting – 07 – B
Patent
B - Operations, Transporting
07
B
B07B 1/18 (2006.01) B07B 1/42 (2006.01)
Patent
CA 2708019
The invention relates to a screen system (1, 2, 3) with a tube-shaped screen (10, 30) comprising a tube (11) with at least one section (12) with screen openings that are directly arranged in the wall of the tubes, and/or comprising a screen frame (31), defining at least the length and the cross-section of a tube, and a screen mesh (32) that is tensioned on the screen frame, so that the screen mesh (32) forms at least a part of the surface of the tub- shaped screen (10, 30). The screen system (1, 2, 3) comprises at least one ultrasonic converter (13) and at least one feed line sound conductor (14, 24, 34) arranged between the ultrasonic converter (13) and the tube (11) or the screen frame (31), wherein furthermore the tube (11) or the screen frame (31) can be exposed by means of the ultrasonic converter (13) and the feed line sound conductor (14, 24, 34) to an ultrasonic excitation, and wherein the feed line sound conductor or conductors (14, 24, 24) is or are designed such that the amplitude of the ultrasonic excitation transmitted to the tube (11) or the screen frame (31) comprises a component in the perpendicular direction to a center axis (A-A) of the tube-shaped screen (10, 30) and a component in the parallel direction to the center axis (A-A) of the tube-shaped screen (10, 30). The invention also relates to a method for operating a screen system (1, 2, 3) with a tube-shaped screen (10, 30) of said kind, wherein the tube (11) or the screen frame (31) is excited to oscillate by means of ultrasound, wherein the tube (11) or the screen frame (31) is excited by means of ultrasonic excitation, wherein the amplitude thereof comprises a component in the perpendicular direction to a center axis (A-A) of the tube-shaped screen (10, 30) and a component in the parallel direction to the center axis (A-A) of the tube- shaped screen (10, 30).
L'invention concerne un système de criblage (1, 2, 3) comportant un tamis (10, 30) tubulaire, ce dernier présentant un tuyau (11) qui comprend au moins un segment (12) muni d'ouvertures de criblage, aménagées directement dans la paroi du tuyau et/ou comprenant un cadre de tamis (31) qui définit au moins la longueur et la section transversale d'un tuyau, et un tissu de criblage (32) qui est tendu sur le cadre de tamis (31), de sorte que le tissu de criblage (32) constitue au moins une partie de la surface du tamis tubulaire (10, 30). Le système de criblage (1, 2, 3) comprend au moins un convertisseur ultrasonore (13) et au moins un conducteur sonore de conduite d'alimentation (14, 24, 34) monté entre le convertisseur ultrasonore (13) et le tuyau (11) ou le cadre de tamis (31). Le ou les conducteurs sonores de conduite d'alimentation (14, 24, 34) sont conçus de sorte que l'amplitude d'excitation ultrasonore transmise au tube (11) ou au cadre de tamis (31) présente une composante dans le sens perpendiculaire à l'axe médian (A-A) du tamis tubulaire (10, 30) et une composante dans le sens parallèle à l'axe médian (A-A) du tamis tubulaire (10, 30). L'invention concerne également un procédé permettant d'exploiter le système de criblage (1, 2, 3).
Artech Systems Ag
Shapiro Cohen
LandOfFree
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