Draghead for underwater alluvial deposit development

FIELD: methods to develop underwater and flooded ferromanganesian concretion and phosphate shelf concretion deposits, as well as similar flooded and marine deposits mainly including horizontal and flat thin seams located on bed surface.

SUBSTANCE: draghead comprises frame body with upper, lower, side and rear walls, suction pipe of suction dredge, blades secured to intermediate bottom, which may rotate in vertical plane. The draghead is also provided with hydraulic abrasing unit having pressure pipe transversal to upper frame body wall. The pressure pipe is provided with hydraulic heads. The draghead comprises ball-and-socket hinge arranged in upper frame body orifice. Upper horizontal edge of rounded side wall is connected to inner surface of upper wall. Side wall flat part height and rounded part height thereof are related as 1:0.5. Ball-and-socket hinge and rounded part of side frame body have curvature radii in plane view equal to active suction dredge suction radius. Intermediate bottom is installed inside rounded side wall of frame body and may rotate with the use of two hydraulic cylinders about horizontal pin secured to rounded part of side frame body wall.

EFFECT: simplified structure and reduced losses in sludge lines.

7 dwg

 

The device relates to the field of development of submerged and flooded alluvial deposits ferromanganese nodules (nodule field), phosphorite nodules (FC) shelf, as well as similar continental irrigated fields and offshore fields, which are mostly horizontal and slightly inclined bottom deposits of low power (wattage deposits in most cases is 0.3-1.5 m), located on the bottom surface (unburied placers). The predominant use of the device are deposits of Fe-mn deposits and FC lakes, shelf and deep Ocean floor.

A device for the production of nodules from the seabed (placers nodules) in the form of a self-propelled truck to collect them, including the frame, tracked progress, the Executive authority in the form of a drum Ripper with blades on its surface, the protective cover built into it to drive in the form of water based multi-flow turbine, the power which is provided by flexible tubing from the pump located outside of the truck, the tip-nozzle discharge pipe that is installed to capture the loosened mass of water coming out from under the drum Ripper (RF patent No. 2112139, MKI 7 E 21 50/00, 1998).

The disadvantage of this device is complex in structure, significant hydraulic losses in GI is kOhm pipeline by changing its length, a certain ambiguity of the successful use of crawler due to the low bearing capacity of bottom sediments containing placer nodules necessary issue in mining or transport vessel total volume of the rock mass and the main component (Fe-mn deposits or FC), and enclosing rocks, certain violations of ecology due to resuspension of bottom sediments during the development with the formation of clouds mist of considerable size and, the main, the practical impossibility of selective mining of deposits with the notch only the richest part of the main useful component of underwater deposits.

It is also known groundsamine device for layer-by-layer (horizontal or inclined layers) development of bottom loose or kabupaten deposits, fixed on the working frame of the dredge, which includes two main parts rigidly connected with the suction slurry line the front part, which is in the process of gruntovaya based on the ground of a special plate, and a rear gruntovaya travelling part, rotating on a transverse horizontal axis, and the absorption of the soil is below the rotating part through the bars of suction holes, which are installed vertically down the blades, rippers, but in case travelling part, there are Windows with regulating the closing valve is mi for water inlet to liquefy pulp and prevent the disruption of soil vacuum pump (Webdirect, Wairagala. The main issues in the development of mineral resources of the World ocean. SPb.: MANEB, 2003, p. 249-252).

The disadvantage of this device is the inability of selective excavation of part of the deposits within its power and control the thickness of the extracted layer. In addition, the rectangular shape of the suction head; it and its dimensions are not consistent with the parameters of the zone of active suction (spherical shape)produced by the soil of the pump, at the level of the lower edge of the suction slurry line that aggravates the design suction head; it is not allows grunthaner and transportation of pulp to be optimal for specific cases modes.

Known technical solution in A.S. No. 1739704 representing the device for deep-sea mining of ferromanganese nodules. The device includes a boat suspended from the lifting system and towed mining unit. Intermediate hopper feeder associated with mining unit flexible slurry line. Mining unit made in the form of a separate extraction modules, connected by a slurry pipeline to a common horizontal slurry line. Extraction module is a carrier on which is installed with the possibility of limited vertical and horizontal movement relative to them working body. The working body is m is waiting for the runners of the sled with the provision in the operating mode steady contact with the ground. This is achieved by installing it on height-adjustable front and rear pairs of uprights. The working body contains a set of knives, protected by a grille (A.S. No. 1739704, MKI 7 E 21 50/00, 1994).

The disadvantage of this device is complicated and bulky construction, significant hydraulic losses in the flexible slurry line to change its length, as well as significant hydraulic losses in joining slurry pipeline to the main pipeline, the hinges of the slurry pipeline, especially when complex bottom topography.

The technical result of the proposed solutions is to simplify the design and reduce losses on the slurry pipeline.

The technical result is achieved by the fact that groundsamine device for development of underwater mines, containing frame-housing with top, bottom, side and rear walls, soil suction nozzle of the pump, knives, mounted on the intermediate bottom, mounted to rotate in a vertical plane, according to the invention is equipped with a host of jet with transverse or width of the top wall of the frame housing of the pressure tube, equipped with hidromassagem, and a ball joint located in the hole of the top wall of the frame housing, with rounded lateral wall of its upper horizontal edge fixed to the inner surface of the upper wall frames the housing, and the height of the front and rounded its parts are related as 1:0.5, and with the ball joint and rounded the side wall of the frame housing in the plan have a radius of curvature equal to the radius of the zone of active soil suction pump, and an intermediate bottom is installed inside the rounded side wall of the frame housing can be rotated by means of two hydraulic cylinders around a horizontal axis mounted on the rounded portion of the side wall of the frame housing.

The device illustrated by the drawings, in which figure 1 shows a section of the front surface of General type suction head; it is for the development of underwater mines and similar minerals, figure 2 - section of a suction head; it is in the plan (a-a), figure 3 shows the frame-casing suction head; it is in the perspective view, figure 4 is a side view of a suction head; it is, figure 5 - view of the suction head; it is in the plan, figure 6 - rounded lateral wall of the frame housing suction head; it is a perspective view (images of individual units and parts suction head; it is shown schematically the main lines), figure 7 shows the control unit provisions rolling the intermediate bottom of the suction head; it is for the development of underwater mines.

Groundsamine the device comprises a frame body 1 (figure 2, 3), inside which is movable is recovered from the intermediate bottom 2 (Fig 1, 2, 4), and on the surface of the frame housing mounted node ball hinge mechanism 3, 4 cylinders for lifting and lowering the movable intermediate bottom 2, the node of the jet 5 of the rock mass, coming on the movable intermediate bottom 2 within the suction head; it, and the suction pipe 6 of the soil pump such as a centrifugal soil, air or hydraulic ejector)located on the vessel security or other type of watercraft.

The top 7 and bottom 8 of the partition wall of the frame housing 1 (Fig 1, 3, 4) made a solid, however, the upper wall 7 has a circular opening 9 to accommodate the ball joint 3 (figure 3). The upper wall 7 and the bottom 8 of the frame housing 1 are connected by four vertical posts 10 (figure 3).

Rounded lateral wall 11 (2, 6) frame-hull suction head; it is in the plan is open with extended side (from the bottom) and rounded on the opposite side in contact with ball joint 3 (2, 5). This form was chosen due to the fact that each grantsalert all along the lower edge section (cylindrical or conical), in particular, and our suction head; it (item 6 in figure 1), has a so-called zone 12 active suction (closed area of the spherical shape) (Fig 1, 5), out of which protozanova does not occur (when using a rectangular box is atih in terms grantsearch devices breed inside them "hang" in the corners of grantsearch, creating some resistance to the process of protozanova and move protozanova body.

Radius of 12 active suction (and hence the radius of the side wall 11) can be calculated by the following formula (Webdirect. Mineral resources of the shelf. Leningrad: Nedra, 1980, str):

where Q is the productivity of the soil pump (volumetric flow rate); ε - porosity placers; ρ - the density of water; ρn- the density of the solid component in the pulp; g - acceleration of gravity; α - the estimated coefficient.

The radius of the zone of active suction in our case will be the same for the radius of the sphere of the ball joint that will provide a minimum hydraulic losses in this node suction head; it is our design.

In both rectilinear planes rounded side walls 11 are provided with vertical slots 13 (Fig 1, 4, 6, 7), are used to ensure free movement of curved rods 14 of the cylinders 4 (7)installed in the swivel bracket 15 for raising and lowering the movable intermediate bottom 2, rotating around a horizontal axis 16 (Fig 1, 3, 4, 5).

Height AB front of the curly side wall 11 (figure 4) correlates with the height of CD curved her hand as 1:0,5. This ensures free PR is the progress inside the lower part of the suction head; it is under its intermediate movable bottom 2 are loosened and the knife 18 unproductive strata placer nodule field or FC.

Movable intermediate bottom 2 in the front (face) part has a slot 17 (2) to free its movement when raising and lowering between the blades 18, which, in addition, structural elements, fastening the top 7 and the bottom plate 8 of the frame-casing 1 suction head; it.

The jet node 5 includes a centrifugal water pump 19, mounted in the support frame 20. Centrifugal water pump 19 is connected to the discharge pipe 21 located on the upper surface of the wall 7 of the frame-casing and provided with a series of hidromasazom 22 along the entire length of the standpipe 21.

The device operates as follows. Pre-intermediate movable bottom 2 installed in the upper end position shown by the dotted line (fir). Next to mining vessel groundsamine device is lowered out of the path of the underwater quarry to the bottom surface (in this self groundsamine the device is connected to the suction of the soil slurry line pump or lifting the pipe airlift), and when the movement of the mining ship, it is gradually being implemented in unconsolidated sediments until it touches the bottom wall 8 of the frame-body of the suction head; it is with the underlying scattering of Fe-mn deposits dense rocks with high, in relation to the requirements the successful conduct of submarine mining, bearing capacity (dense clay conditions for the Fe-mn deposits deposits of the Gulf of Finland of the Baltic sea at depths of 25-30 m), which will move groundsamine mining device when developing material reservoir nodule field FC and similar sediments. This breed does not contain nodules takes place inside the device and remains behind in the form of more friable mass, aided by the knives 18 (figure 2). Water pump not included.

Upon reaching the loop Fe-mn deposits deposits groundsamine device is fed back by an amount equal to the length of its body, and the intermediate bottom set remotely by hydraulic cylinders 4 (rod control cylinders not shown), to move the suction head; it is during the testing of underwater deposits were cut in a layer of such power that it is the productive part. In the process of developing the deposits of the upper part, a movable cutting the intermediate bottom 2, is moved (if necessary loosened Gidrostroy due to the work site of the jet with the aim of creating a slurry of a given consistency) in the form of pulp and gets into the zone of active suction 12 of the hollow ball joint 3, where included groundwater pump (air pump, hydraulic ejector or centrifugal sand pump, etc. is served on the pressure slurry line 6 on a mining ship. Bottom, loosened by the blades 18 part reservoir, due to the continuous construction of the frame-to the community and beveled the curved inner wall 11, covered with the intermediate movable bottom 2, passes freely through the body and remains in the developed space underwater career.

The mining of the deposits are either parallel to the longitudinal or transverse benches depending on the specific parameters of underwater nodule deposits or other deposits.

A simpler construction of the device is greatly reduced hydraulic loss in slurry pipeline, and the operation of the proposed suction head; it is from the body of the underwater deposits selectively extracted mainly concretions most rich in content upper strata, leaving in the developed space underwater career subsistence part of the scattering, which reduces the energy consumption due (reduction of excavation, the rock mass is excluded increased pollution of coastal areas under the concentration of the extracted material, remain at the bottom of the fine fraction of Fe-mn deposits, which are the nuclei for the subsequent growth of nodules (rational use of natural resources), which ultimately reduces the negative impact in the production of underwater mining and enrichment of the rock mass.

Groundsamine device for development of underwater mines, containing frame-housing with top, bottom, side and rear walls, the suction nozzle Grun the new pump, knives, mounted on the intermediate bottom installed with a possibility of rotation in the vertical plane, characterized in that groundsamine the device is equipped with a node of a jet with transverse or width of the top wall of the frame housing of the pressure tube, equipped with hidromassagem, and a ball joint located in the hole of the top wall of the frame housing, with rounded lateral wall of its upper horizontal edge fixed to the inner surface of the upper wall of the frame housing, and the height of the front and rounded its parts are related as 1:0.5, and with the ball joint and rounded the side wall of the frame housing in the plan have the radius curvature equal to the radius of the zone of active soil suction pump, and an intermediate bottom is installed inside the rounded side wall of the frame housing can be rotated by means of two hydraulic cylinders around a horizontal axis mounted on the rounded portion of the side wall of the frame housing.



 

Same patents:

FIELD: mining, particularly to produce ore and rock materials, for instance building materials.

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FIELD: mining industry, particularly for obtaining minerals from underwater.

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EFFECT: increased operational efficiency.

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FIELD: mining, particularly to produce ore and rock materials, for instance building materials.

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EFFECT: possibility of mining work performing at variable development depth.

2 dwg

FIELD: rock mining, particularly to develop gravel-sand deposits.

SUBSTANCE: rid comprises body made as U-shaped pontoon and having docking mechanism, which provides connection of similar pontoon sections to maintain floatability thereof in the case of suction head weight increasing. The rig also has suction head made as downhole hydraulic mining tool and having ground receiving means and portal crane for ground receiver lifting and lowering arranged in front pontoon part. The ground receiver is lifted and lowered by suction head rotation about axle arranged in central pontoon part. The rig also has sludge line connected to suction head.

EFFECT: possibility of mining work performing at variable development depth.

4 dwg

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EFFECT: increased range and ground shifting capacity.

Draghead // 2265699

FIELD: hydromechanization equipment for construction as well as for hydromechanized production and laying of non-metallic building materials with the use of dredges namely floating earth-moving machines.

SUBSTANCE: draghead comprises ground pump with electric drive and with suction and pressure pipelines. The draghead also has ejection system. Ejection system includes water ejecting pump with suction and pressure pipelines adapted to supply water to flow mixing chamber arranged in suction pipeline of ground pump. Ejection system is provided with annular water manifold connected to pressure pipeline of water ejecting pump. The water manifold has hydraulic nozzles to supply water to conical flow mixing chamber. The flow mixing chamber is connected to suction pipeline of ground pump immersed in water under water surface layer.

EFFECT: increased depth of cavitation-free ground excavation without draghead productivity reduction, increased distance of ground hydrotransportation.

1 dwg

FIELD: devices for extraction of sapropel from inland water basins, applicable when pressure transportation of sapropel mass through pipes to the water basin shore is impossible.

SUBSTANCE: the device has a floating means, receiving equipment of rectangular shape in plan with two side vertical walls, equipment for capture and transportation of sapropel and a tank for it. The floating means is made of a platform positioned on two pontoons. Positioned between the pontoons is the receiving equipment provided with end face walls inclined relative to the platform with formation of a closed space. The upper edges of the side and end face walls are positioned for installation over the surface of the water basin, and the lower ones- in the productive mass of sapropel below the layer of clean water. The equipment for capture and transportation of sapropel is made in the form of a drag-chain conveyer, whose tail section is suspended on two doubled ropes and positioned in the productive mass of sapropel. The free ends of each pair of ropes are fastened for coiling and winding on the winch drum with a hand drive and a lock mechanism installed on two interconnected floats. The head section of the drag-chain conveyer is made with formation of sections concave and convex in the vertical plane with arrangement of the inclined section inside the receiving equipment and fixation on it with the aid of brackets. The receiving equipment on the platform is fastened on the side of the shore by means of hinges, and on the opposite side it is suspended to the platform with the aid of two flexible components, whose free ends are fastened for coiling and winding on the winch drums. A portion of the drag-chain conveyer located between the pontoons of the receiving equipment and the shore is installed on floats.

EFFECT: reduced power consumption, enhanced capacity.

3 dwg

FIELD: mining industry.

SUBSTANCE: device has screw, having transporting spiral ribbon held on the shaft. Equipment is provided with U-shaped chute and perforated drum with armature in form of screw ribbon, having curvilinear shape in cross-section, arched in the direction of movement. Drum is mounted in upper portion of U-shaped chute. In its lower portion a screw is mounted.

EFFECT: higher productiveness.

3 dwg

FIELD: sapropel extraction technologies.

SUBSTANCE: device has watercraft, rectangular receiving device in plan with two side vertical walls, device for catching and transporting sapropel and tank for it. Watercraft is made of platform on two pontoons, and between pontoons receiving device is placed, provided with slanting relatively to platform end walls with forming of closed space. Upper edges of side and end walls are placed above water surface, and lower ones - in productive sapropel bed below clear water layer. Device for catching and transporting sapropel is made in form of one-chain conveyor, tail portion of which is suspended on twin ropes and placed in productive sapropel bed. Free ends of each pair of ropes are fixed with possible winding together and onto hand-actuated winch drum with stopping gear, mounted on two interconnected floats. Head portion of one-chain conveyor is placed at shore with forming of convex and concave, in vertical plane, portions with placement of slanting portion within receiving device and fixing thereon via corbels. Receiving device on platform is fixed on the side of shore via joints, and on the opposite side is suspended to platform with two flexible elements, free ends of which are fixed with possible winding together and onto winches drums.

EFFECT: higher effectiveness and productiveness.

3 dwg

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