Scraper for the development of fluvial gravel deposits

 

The invention relates to a device for transporting bulk and bulk cargoes have been presented, namely to cable scrapers, and can be used for the development of fluvial gravel deposits of diamonds, for example, in Angola. Scraper for the development of fluvial gravel deposits consists of two lateral walls, on top interconnected by transverse link, a back wall, towed devices for the head and tail traction rope. A cross connection is made in the form of a cover connected to the rear wall of the scraper, and the longitudinal profile of the formed surface with them outlined the curve of variable radius increasing from the lower edge of the rear wall to the edge of the cover at the side of the rope. The cover is perforated transversely oriented and positioned in staggered slotted holes, the width of which is accepted is less than the minimum particle sizes diamondiferous rock. The edges of the slot from the rear wall of the scraper posted by partitions, facing the inside of the scraper. Increases the performance and efficiency of the scraper. 2 Il.

The invention relative to the, what can be used for the development of fluvial gravel deposits of diamonds, for example, in Angola.

The famous cable car-scraper installation, including scraper box type, consisting of two side and rear walls, cross-linking, towed devices, head and tail ropes (Pukhov Y. C. mining operations. M.: Nedra, 1991, S. 110-111, Fig. D).

However, a disadvantage of the known scraper is the possibility of losing part captured by the scraper diamondiferous rock due to its removal through the upper edge of the rear wall of the scraper under the action of the oncoming flow of water.

Known scraper for the development of fluvial gravel deposits (prototype), consisting of two lateral walls, on top interconnected by transverse link, a back wall, towed devices for the head and tail traction rope (U.S. Pat. RF 2181815, CL 7 E 02 F 3/54, E 21 41/30. publ. 27.04.2002).

The disadvantage even though is the removal through the upper edge of the rear wall of the scraper part of the diamondiferous rock, captured by the scraper during its movement along the bottom of the downstream flow due to the counter pressure of the water.

The removal movable scraper in the water of the goods is confirmed by our is being a developing at the rear of the rock mass begins to exceed the height of the rear wall of the scraper, part of rock containing diamonds, begins to discharge through the upper edge of the outside of the scraper. This leads to loss of diamondiferous rock and decrease the performance of the cable-scraper installation.

The objective of the invention is to increase the efficiency of the scraper installation by eliminating losses diamondiferous rock and increase productivity.

The problem is solved due to the fact that the scraper for the development of fluvial alluvial deposits, consisting of two lateral walls, on top interconnected by transverse link, a back wall, towed devices for the head and tail traction rope, according to the invention, the cross-connection is made in the form of a cover connected to the rear wall of the scraper, and the longitudinal profile of the formed surface with them outlined the curve of variable radius increasing from the lower edge of the rear wall to the edge of the cover at the side of the rope, the lid is perforated transversely oriented and positioned in staggered slotted holes, the width of which is accepted is less than the minimum particle sizes diamondiferous rock, and the edges of the slot with the fluvial gravel deposits is shown in Fig.1 - side view of Fig.2 - plan.

The scraper consists of two side walls 1 and 2, cover 3, a top connecting the side walls 1 and 2, and the rear wall 4. The lid 3 is connected to the rear wall 4, and a longitudinal profile, formed by the cover 3 and the rear wall 4 of a solid surface, outlined the curve of variable radius R. the radius R is increased from the lower edge 5 of the rear wall 4 to the edge 6 of the cover 3 at the side of the rope 7. Head rope 7 with the side walls 1 and 2 is connected with a coupling 8. Tail ropes 9 and 10 against the rear wall 4 is connected with a coupling 11. Cover 3 perforated transversely oriented slotted openings 12 arranged in staggered relation to each other. The width of the slot 12 adopted less than the minimum particle sizes diamondiferous rock. The edges of the slot 12 on the inner surface of the cover 3 from the rear wall 4 of the scraper posted by partitions 13, facing the inside of the scraper.

Scraper for the development of fluvial gravel deposits proceeds as follows. Development of fluvial deposits, such as diamonds, by pulling the scraper across the river on her bed (When moving even though there is a gradual filling of the internal volume of sediments, containing diamonds. Cover 3 excludes the possibility of taking part diamondiferous sediments beyond the scraper, and a curved surface profile formed in the rear wall 4 and the cover 3, defined by the curve of variable radius R contributes to the placement of the captured species throughout the volume of the scraper, increasing its useful capacity.

Transverse slotted opening 12 in the cover 3 promote removal of water flowing into the internal cavity of the scraper in its motion, reducing the likelihood of outflow of diamondiferous rocks outside scrapers due to the fact that the flow of the pulp passing through the rear wall 4 and nabega on barrier 13, stratified. Particle species, changing the direction of movement, are moved down, and the water is removed out through the slotted holes 3. By limiting the width of the slot 3 through them not submitted particles diamondiferous rock, who happened to be in the zone of removal of water from scraping.

Features of the invention increase the efficiency of the scraper installation by eliminating losses diamond and improve performance.

Claims

Scraper for the development of fluvial placers wall, towed devices for the head and tail traction rope, characterized in that the cross-connection is made in the form of a cover connected to the rear wall of the scraper, and the longitudinal profile of the formed surface with them outlined the curve of variable radius increasing from the lower edge of the rear wall to the edge of the cover at the side of the rope, the lid is perforated transversely oriented and positioned in staggered slotted holes, the width of which is accepted is less than the minimum particle sizes diamondiferous rock, and the edges of the slot from the rear wall of the scraper posted by partitions, facing the inside of the scraper.



 

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