SU1434040A1 - Suction-tube dredger - Google Patents

Abstract

This invention relates to underwater mining using a hydromechanization method. The purpose of the invention is to improve the quality of the extracted material. For this, the suction dredger has a dewatering device 8. It is installed in the auxiliary pressure pipe (T) 7 and is located between the main pressure T 4 and the auxiliary suction T 6. On the additional T 9, in the place of its interfacing with the main pressure head T 4, a grid is installed. In addition, the suction T 6 has an expanding tip installed in the lower part of the milling cutter 16. The destroyed product enters both the main hydrotransport system and the auxiliary one. It passes through the grate of the lower part of the milling cutter 16, then through the grate of the suction tip and through T 6 through the pump unit and the pressure T 7 enters a dewatering device 8. At the exit of the product from the dewatering device, the depth of 16. 2 or „

Description

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. This invention relates to subsea mineral mining by a method of hydromechanization using dredgers, in particular for the development of watered thin layers of lake salt with underlying silt. The purpose of the invention is the exploration of some kind of material produced. i FIG. 1 shows a dredger, side view; in fig. 2 node I in figure 1; in fig. 3 - milling ripper (cutter), longitudinal section. I Suction dredger consists of a cusp 1, on which the base is mounted. jHOBHoe equipment: the main pump. unit 2 with suction 3 n pressure 4-pipelines, auxiliary pump unit 5 with suction -, pump 6 and pressure 7 pipelines, dewatering device (for example, hydrocyclone) 8, additional pipeline 9 with valve 10 and grid 11, and executive body

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Bot on the last layer, located on the border of contact with the underlying rocks. In this case, the valve 10 is closed. The destroyed product enters both the main hydrotransport system and the auxiliary one. It passes through the grate 22 of the lower part of the milling cutter 19, then through the grate 27 of the suction tip 26 and further along the suction pipe 6 through the pump assembly 5 and into the porous pipe 7 enters the dewatering device 8.

Upon exit of the product from the dewatering device, the depth of the cutter is monitored and controlled. If, at the exit, the salt is without inclusions of the underlying sludge, the cutter is buried. When the impurities of silt appear in the dehydrated product, the mill is lifted. The dehydrated product is placed behind the dredge in or away from the working space (or trans 12j consisting of the frame 13, the 1,4,25 drive is ported and placed in specially

shafting 15 and milling loosening 1l 16, milling ripper 16 consists of blades 17 with carbide cutters 18j extended lower part: 19, formed by ring 20, bottom 0:21 and grille 22, hub 23, sucking; tip 24 of the main hydraulic transport system and a suction nozzle 25 fixed on it with a head 26 of an auxiliary hydraulic transport system. Suction: tip 26 is equipped with a protective grill 27. The lower part of the milling cutter 19 can: be made in the form of a truncated one. 40

Suction dredge works as follows.

Salt formation is done in horizontal layers from top to bottom. When the milling ripper 16 g rotates, the formation is destroyed by carbide-tipped cutters 18 and taken up through the suction tip 24 of the main hydrotransport system. When operating on the upper layers, the auxiliary hydraulic transport system is turned off, while the valve 10 of the additional pipeline 9 is open, and the brine (brine) is fed through

cut the grid 11 of the pressure pipe-sstelny body in the form of a cutter, the main

Yes, and the main hydrotransport sie- and auxiliary suction and netymey in the suction pipe 6porny pipelines, different in assisting hydrotransporting and with the fact that, in order to increase the system. The latter is included in the quality of the material being mined.

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Bot on the last layer, located on the border of contact with the underlying rocks. In this case, the valve 10 is closed. The destroyed product enters both the main hydrotransport system and the auxiliary one. It passes through the grill 22 of the lower part of the milling cutter 19, then through the grill 27 of the suction tip 26 and then through the suction pipe 6 through the pump assembly 5 and the pressure pipe 7 enters the dewatering device 8.

At the exit of the product from the dewatering device, the depth of the cutter is monitored and controlled. If, at the exit, the salt is without inclusions of the underlying sludge, the cutter is buried. When the impurity of silt appears in the dehydrated product, the mill is raised. The dehydrated product is placed overboard or stern of the dredge in the spent space (or transported and placed in a specially

designated places). The brine was drained from the dewatering device at the opposite side of the dredger. The decrease in the pollution of the extracted material by the underlying unconnected soils occurs due to the use of an auxiliary hydrotransport system, equipped with a suction nozzle, which is located at the bottom of the cutter, and a dewatering device. The destroyed part of the platelet and part of the bedrock enter the suction tip of the auxiliary system and then are fed through a pipeline to the dewatering device. At the output of the short-circuit products of the dewatering device, the mineral is monitored with the underlying soils and the depth of development is controlled, depending on the formation hypsometry. This provides a reduction in the dilution of the extracted mineral.

Claims (1)

Invention Formula Dredging equipment, including hull, main and auxiliary hydrotransport systems, execute us .Z S 23 one