Suction-tube dredger ripping-and-suction device

FIELD: hydraulic mechanization.

SUBSTANCE: invention can be used in mining placer deposits of high density in underwater faces. Proposed ripping-and-suction device or suction-tube dredger includes pipeline, suction head with screen containing rigid disk with radial slots and central impenetrable circle. Each radial slot is connected with suction head through sealed variable cross section channel. Total area of radial slots does not exceed area of cross section of suction head. Suction head is provided with rotation drive including intercoupled electric drive, safety clutch, reduction gear, propeller shaft and chain drive to rotate screen. Suction head is connected with pipeline of turnable insert with support adjustable in height to adjust tension of chain drive. Radial stiffening ribs are arranged get on rigid disk between radial slots, and ripping blades with cutting edge are located under stiffening ribs.

EFFECT: increased efficiency of mining placer sands, reduced losses of valuable high density components.

3 dwg

 

The invention relates to the field of dredging and can be used in the development of placer mineral deposits large density of underwater mines.

Known rotary suction device dredger, including piping, suction tip with a circular screen that contains a disk that is located at the level of the mouth, a collar connecting the disk with sectors, forming radial grooves, ribs and a rotation drive of the suction tip, consisting of a series connected motor, safety clutch, gearbox, propeller shaft and chain drive for rotating annular screen. The suction tip is connected to the pipeline by means of a turning insert installed therein a height-adjustable support for regulating the tension of a chain of transmission [1].

Rotary suction device dredger is able to provide the most efficient development of non-cohesive Sands deposits and to reduce the potential loss of valuable components of high density due to the fact that during the rotation of the screen of the suction device region of the face, in some moments of time falling within the zone of hydrodynamic shadows, in which the ascending streams of water have lower values will be sequentially alternated with areas of intensive RA is Miwa, located under radial slots.

However, it is known that the presence in the Sands of alluvial deposits of clay and silt particles even with a small content dramatically increases the cohesion of the rock mass and reduces its ability to erosion. Under these conditions, the effectiveness of the existing suction devices with standard zemsnaryad equipment may be reduced.

The purpose of the invention is to increase the efficiency of development clayey Sands deposits and the reduction of losses of valuable components high density.

This objective is achieved in that in retryplease-suction device dredger, including piping, suction tip with a screen containing a hard disk with radial slits and Central impenetrable circle, each radial slot is connected with the suction tip of the tight channel of variable cross-sectional shape, the total area of the radial cracks does not exceed the cross-sectional area of the suction tip, the suction tip is provided with a rotational drive, comprising serially connected motors, safety clutch, gearbox, propeller shaft and chain drive to rotate the screen, the suction tip is connected to the pipeline by means of a turning insert with adjustable is th height support for adjustment chain tension the chain of transmission, on the hard disk between the radial slits placed radial ribs, and below them, loosening the blade with the cutting edge.

The use of the proposed retryplease-suction device dredger can improve development efficiency Sands deposits and reduce the loss of valuable components high density.

The invention is illustrated by drawings, where figure 1 shows a General view retryplease-suction device dredger; figure 2 is a view As in figure 1; figure 3 is an enlarged section In figure 1.

Retryplease-suction device dredger includes the pipeline 1, the suction tip 2, which is equipped with a screen 3, containing the hard disk 4 with radial slits 5 and the Central impenetrable circle 6. Each radial slit 5 is connected with the suction tip 2 tight channel of variable cross-sectional shape 7, and the total area of the radial slots 5 does not exceed the cross-sectional area of the suction tip 2. Retryplease-suction device dredger is equipped with a drive of rotation 8 of the suction tip 2, comprising sequentially connected to the motor 9, the safety clutch 10, the gear 11, the drive shaft 12 and a chain drive 13 for rotation of the screen 3; suction handpiece 2 is connected to the pipeline 1 by means of a turning insert 14 is placed on it a height-adjustable support 15 to adjust the tension of a chain transfer 13. (On the hard disk 4 between the radial slots 5 are radial ribs 16 and under them loosening of the blade 17 with cutting edge 18).

The device operates as follows.

When lowered into the water suction tip 2 include hoppers (not shown) and the rotation drive 8. Torque of the electric motor 9 through the gear 11 through a safety clutch 10 through the drive shaft 12 is transmitted to the chain drive 13, resulting in a rotation of the screen 3. To adjust the chain tension in the chain drive 13 on the rotary insert 14 mounted height-adjustable bearing 15. In the case of a large resistance to rotation, the safety clutch 10 is turned off, stopping the transmission of torque.

During the rotation of the screen 3 the cutting edge 18 of loosening blades 17 removes the chips from the surface of the bottom (not shown), which under the action of vertical ascending jets of water forming under radial slots 5 of the hard disk 4, rushes up, and passing through tight channels of variable cross-sectional shape 7, further in the form of a slurry is fed into the suction tip 2 and the pipe 1. Rigidity is provided by the Central circle 6 and the radial ribs 16.

Retryplease-suction device dredger improves the efficiency develo the TCI clayey Sands deposits and reduce the loss of valuable components high density.

Sources of information

1. RF patent №2208096, priority from 30.03 2001 C2, 7 E02F 3/92, "Rotary suction device dredger", publ. 10.07.2003. Bull. No. 19.

Retryplease-suction device dredger, including piping, suction tip with a screen containing a hard disk with radial slits and Central impenetrable circle, each radial slot is connected with the suction tip of the tight channel of variable cross-sectional shape, the total area of the radial cracks does not exceed the cross-sectional area of the suction tip, the suction tip is provided with a rotational drive, including consistently associated actuator, safety clutch, gearbox, propeller shaft and chain drive to rotate the screen, the suction tip is connected to the pipeline by means of a turning insert with a height-adjustable support for adjusting the tension of a chain transmission, characterized in that on the hard disk between the radial slits placed radial ribs, and below them, loosening the blade with the cutting edge.



 

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