Flow control device

Flow control device, characterized by

• a) a flow channel (1) composed of non-magnetic material having a center axis (MA), with
• aa) a first length segment (L1) having a first diameter (D1),
• ab) a second length segment (L2), wherein the flow channel (1) expands conically from the first diameter (D1) to a second diameter (D2) in the second length segment (L2), and
• ac) a third length segment (L3),
• b) a magnetic closing ball (K), which is movably arranged in the second and third length segments (L2, L3) and has a ball diameter (DK) that lies between the first and the second diameters (D1, D2),
• c) a first, axially polarized (north-south) ring magnet (NSRM), which is oriented centrally in the center axis (MA) and is arranged so as to be longitudinally movable along the center axis and has an inside diameter (RMDI) that is greater than the outside diameter of the flow channel (1) in the third length segment (L3),
• d) a preloading device (VE), which axially urges the north-south-polarized first ring magnet (NSRM) toward the first length segment (L1), and
• characterized in that the preloading device (VE) is designed as an axially-polarized third (north-south) ring magnet (R3), supported on the flow channel, which is oriented centrally on the center axis (MA), wherein a spacer (AH) is arranged between the two mutually attracting ring magnets.

Flow control device, characterized by

• a) a flow channel (1) composed of non-magnetic material having a center axis (MA), with
• aa) a first length segment (L1) having a first diameter (D1),
• ab) a second length segment (L2), wherein the flow channel (1) expands conically from the first diameter (D1) to a second diameter (D2) in the second length segment (L2), and
• ac) a third length segment (L3),
• b) a magnetic closing ball (K), which is movably arranged in the second and third length segments (L2, L3) and has a ball diameter (DK) that lies between the first and the second diameters (D1, D2),
• c) a first, axially polarized (north-south) ring magnet (NSRM), which is oriented centrally in the center axis (MA) and is arranged so as to be longitudinally movable along the center axis and has an inside diameter (RMDI) that is greater than the outside diameter of the flow channel (1) in the third length segment fL3),
• d) a preloading device (VE), which axially urges the north-south-polarized first ring magnet (NSRM) toward the first length segment (L1), and
• characterized in that the preloading device (VE) is designed as at least two first (south-north) bar magnets (S2), supported on the flow channel, which are grouped around the center axis (MA) and reverse-axially-polarized in relation to the first ring magnet (R1).