COMPLEX FOR EXTRACTING CONCRETIONS FROM SEA BOTTOM Russian patent published in 2009 - IPC E21C50/00 

FIELD: mining.

SUBSTANCE: complex for extracting concretions from sea bottom consists of base and auxiliary floating vessels kinematically connected by means of flexible elements. A doubled driven block is installed on the swivel platform of the base floating vessel, while a doubled deflecting block is installed on the auxiliary floating vessel; the driven and deflecting blocks interact with two flexible elements. Between them on the flexible elements perforated containers are arranged; the containers have rectangular cross section with cutting edges from the side of a receiving opening. The concretion receiving opening is located on the base floating vessel. The flexible elements are made in form of closed in vertical plane laminated links. The containers are arranged on the links equally spaced along their length. The deflecting blocks on the auxiliary floating vessel are driven and, similar to the base floating vessel, are installed on the platform swiveling in horizontal plane. Containers on the laminar links are secured by means of hinges. Also on sea bottom the axis of the hinge of each container is set off relative to the center of container weight into the side of its receiving opening in horizontal plane and to the side of the upper edge of the container in vertical plane. Additionally, lower strand of links is intended to rest on the sea bottom. A guiding bar incurved upward is located under strands of the flexible elements running down from the doubled driven block; containers after their descending off the driven block interact with the guiding bar. A concretion receiving facility is made in form of inclined perforated chute placed between tight and slack strands of flexible elements moving around the driven block. Nozzles, supplying clean water under pressure into the chute, are arranged over the chute, while under the chute and with a gap there is installed a trough for withdrawing water with slime particles.

EFFECT: raised efficiency at increased depth of concretions bedding.

3 cl, 4 dwg