摘要:
This present invention relates to improvements in and relating to dredging apparatus. In particular, the invention relates to a suction head for a dredging device for relocating matter, such as matter in the form of particulate matter and/or fluid by sucking the particulate matter from a bed of a body of water. The suction head comprises a first conduit having an inlet; a second conduit having an inlet and an outlet, the second conduit being in series and in fluid communication with the first conduit, the outlet of the second conduit opening to the inlet of the first conduit via a mixing region; a third conduit having an inlet and an outlet, the outlet of the third conduit opening to the first conduit via a restriction and the mixing region, wherein a fluid may be fed under pressure through the inlet of the third conduit and conveyed to the mixing region via the restriction to cause a reduction in the pressure of the fluid passing into the mixing region, the reduction in pressure of the fluid causing matter to be sucked through the inlet of the second conduit and conveyed though the second conduit to the mixing region, the matter being entrained with the fluid and exiting the mixing region via the first conduit; and means for promoting a generally helical flow of the fluid through the restriction.
摘要:
The invention relates to a cutter head (10) for dredging ground under water, this cutter head being suitable for attachment rotatably around a central axis to the ladder (2) of a cutter suction dredger (1) and for being moved through the ground (9) therewith in a lateral sweeping movement, the cutter head comprising a base ring(13), a hub(14) situated at a distance in the direction of the central axis from the base ring, and a plurality of arms (15) extending from the base ring to the hub, wherein a passage opening (16) is located between arms and wherein the arms are provided with a first series of cutting tools on a leading part (15a) relative to the direction of rotation of the cutter head, and wherein at least one arm is provided with a second series of cutting tools on a part of the arm (15b) facing away from the central axis.
摘要:
A cutter head (3) for a cutter suction dredger (1) intended to be mounted rotatably about a cutter head center axis with respect to a suction device (4) for sucking up material which has been cut loose by the cutter head from the bottom of a body of water (6), which cutter head comprises a base ring(7), a boss (8) located at a distance from the base ring in the direction of the center axis, as well as a plurality of arms (9) which extend from the base ring to the boss and are distributed at regular intervals in the peripheral direction, each of which arms has a series of teeth (12) located on the radially outermost parts (11) of the arm and directed outwards at an angle with respect to the peripheral direction, the direction of rotation of the cutter head being set in such a manner that the teeth perform a cutting movement, with non- return means (13-15) extending between at least two neighbouring arms, preventing movement of cut material from the center axis to the exterior.
摘要:
The present invention relates to a draghead (1) for a trailing suction hopper, comprising a visor (2), revolvable around a first axis (6) for removing soil, and a suction line (31) connected to the visor (2) for the removal of the loosened soil, characterised in that the draghead (1) is provided with a pressure plate (21), which comprises a number of mainly disc-shaped penetrating bodies (22) on the soil-facing side of the pressure plate (21), in such a way that their circumferential edge (23) is capable of transferring forces to the soil.
摘要:
Eine Wendeeinrichtung (1) zum Wenden und Rückvermischen von Feuchtgut (2), insbesondere von Klärschlamm, in einer Trocknungsanlage (3) weist zumindest eine Schaufel (7) auf. Das Feuchtgut (2) ist in der Trocknungsanlage (3) zum Trocknen auf einem Boden (4) in einer Schicht ausgebreitet. Die Schaufel (7) ist innerhalb eines Umkreises um eine Achse (8) drehbar. Unmittelbar außerhalb des Umkreises und im wesentlichen oberhalb der Schicht ist eine Rückhaltevorrichtung (9) für das Feuchtgut (2) angeordnet, die mit der Schaufel (7) zusammenwirkt.
摘要:
Die Erfindung betrifft ein pneumatisches Absaugrohr (3) zum pneumatischen Aufnehmen von Erdreich nach dem Dünnstromverfahren, für Saugvorrichtungen wie Saugbagger bei Erzeugung eines Saugluftstromes, mit einer am unteren, zum Erdreich gerichteten Ende des Absaugrohres (3) angeordneten Krone (11), wobei an das obere Ende des Absaugrohres (3) ein Saugschlauch (24) anschließbar ist. Das Absaugrohr (3) weist oberhalb der Krone (11) Schlitze (14) auf zum Einströmen von Luft unter Umgehung der unteren Kronenöffnung in Funktion eines Bypasses zur Sicherstellung einer laminare Strömung im Absaugrohr (3).
摘要:
The invention relates to a suction dredge for receiving and separating suction material (12, 12') with a pneumatic suction turbine (5) which is connected to a collecting tank (1). A suction tube (7) leads into said collecting tank and a large part of the suction material is fed into said tank. The suction dredge also comprises a filter chamber (2) with a plurality of filters (10, 10') through which the suction air flow (11, 11', 11'') is guided for fine-filtering. The collecting tank and the filter chamber are separated by a partition (8) which comprises a through-hole (9) for the suction air flow. Said suction air flow (11, 11', 11'') is directed to the upper part of the wall (25) of the collecting tank opposite the partition (8). Said through-hole (9) of the partition is located in the upper part thereof so that a cyclone-type suction air current about a vertical axis is produced in the collecting tank. The suction air flow impacts the filter (10, 10') in a substantially vertical direction. The inlet of the air suction flow into the collecting tank and the outlet of the suction air flow (13) from the filters are displaced from one another by 180 DEG to 270 DEG .