RU182160U1 - DIGGER DIGGING APPLIANCE - Google Patents

Abstract

The proposed utility model relates to hydromechanization, in particular to technical means of extracting minerals from under water, as well as dredging. The task being solved by the proposed utility model is to increase the efficiency of exposure to soil with water jets flowing from nozzles. Technical result, which can be obtained by using the claimed technical solution, the creation of pressure pulsations in the jets of water flowing from the nozzles. The essence of the proposed invention. The soil intake device of the dredging projectile includes a tip with a suction pharynx, a water supply channel for soil hydraulic loosening, a collector or a monitor with nozzles in front of which cavitation generators of water pressure pulsations are installed. During operation, water is supplied through the channel to the nozzles from the hydraulic ripper pump. The jets of water flowing from the nozzles cut into the soil, separate it from the array and create a diffusion zone as a result of the active mixing of the jets with the soil. In this case, water flowing out in the form of jets from nozzles passes through cavitation pressure pulsation generators made in the form of a Venturi tube, in which a stationary fluid flow is pulsating. The hydrodynamic effect of pulsating jets on the soil mass forms longitudinal and transverse waves. They excite elastic (natural) vibrations of the porous medium, which, in turn, lead to disruption of the continuity of the soil mass. Due to this, the effectiveness of the impact on the soil of water jets flowing from the nozzles, and hydraulic loosening of the soil is significantly increased.

Description

The proposed utility model relates to hydromechanization, in particular to technical means of extracting minerals from under water, as well as dredging.

A suction device for an dredging projectile is known, which includes a tip with a suction pharynx, a water supply channel for hydraulic loosening of the soil, and a collector with nozzles, while the suction tip is divided by a collector with nozzles in height into two separate suction sections (AS USSR No. 1208145, E02F 3 / 88, 1984). A disadvantage of the known device is the low efficiency of loosening the soil with water jets flowing from the nozzles. This is due to the fact that water jets monotonously press on the ground without impact.

Known suction device dredging projectile, including a tip with a suction pharynx, a water supply channel, a hydraulic monitor with nozzles for loosening and transporting soil (RF patent for the invention No. 2390612 E02F 3/88 from 05/28/2008). A disadvantage of the known technical solution is the low efficiency of both loosening the soil and transporting it to the suction pharynx with jets of water flowing from the nozzles. This is due to the fact that loosening and transportation of soil is carried out by continuous stationary streams of water. Sowing jets monotonously pressurize the soil without impact, which reduces the process of separating soil from the array, and stationary transporting jets quickly lose energy in the environment stream, which reduces the range of soil transportation and the efficiency of mixing jets with transported soil.

It is known and accepted as a prototype that the suction device of an dredging projectile with a hydrodiffusive baking powder of soil, including a tip with a suction pharynx, a water supply channel for hydraulic soil loosening, a hydraulic monitor or a collector with nozzles (see Kharin A.I. Stroyizdat, 1966, p. 155, Fig. 63). A disadvantage of the known device is the low efficiency of diffusion loosening of the soil by water jets flowing from the nozzles. This is due to the fact that water jets monotonously press on the soil without impact, which reduces the process of water jets penetrating the soil and the formation of diffusion zones of the water-soil mixture.

The problem being solved by the proposed utility model is to increase the effectiveness of the impact on the soil with water jets flowing from the nozzles.

The technical result that can be obtained using the proposed technical solution is the creation of pressure pulsations in the jets of water flowing from the nozzles.

To solve the problem with the achievement of the specified technical result in a well-known suction device of a suction dredger, including a tip with a suction pharynx, a water supply channel for hydraulic loosening of the soil, a collector or a hydraulic monitor with nozzles, according to the proposed utility model, the suction device is equipped with cavitation generators of water pressure pulsations installed in front of nozzles.

Additional options for the dredging device of the dredging projectile are possible, in which it is advisable that:

- a cavitation generator of water pressure pulsations was installed in front of the collector;

- A cavitation generator of water pressure pulsations was installed on the monitor.

The indicated advantages, as well as the features of the proposed utility model, are illustrated by the variants of its implementation with reference to the drawings: in FIG. 1 shows a side view of a device with a collector in which cavitation pressure pulsation generators are installed in front of the nozzles; in FIG. 2 is a view A in FIG. 1; in FIG. 3 is a section BB in FIG. 2; in FIG. 4 is a section BB in FIG. 2; in FIG. 5 - section GG in figure 2; in FIG. 6 is a side view of the device with a cavitation pressure pulsation generator installed in front of the collector; in FIG. 7 is a side view of a device with a monitor in which cavitation pressure pulsation generators are installed in front of the nozzles; in FIG. 8 - section D in Fig.7; in FIG. 9 is a side view of the device with a cavitation generator of pressure pulsations installed on the monitor.

The soil intake device of the dredging projectile includes a tip 1 with a suction pharynx 2, a water supply channel 3 for hydraulic loosening of the soil, a collector 4 or a monitor 5 with nozzles 6, 7, 8, 9, in front of which cavitation generators of pulsations of water pressure are installed 10. Cavitation generator of pulsations of water pressure 11 can be installed in front of the collector 4, and the cavitation generator of water pressure pulsations 12 can be mounted on the monitor 5. The soil intake device can also be equipped with a protective spherical grating 13 (which is conventionally not shown in FIGS. 3, 4, 5 a) or protective ribs 14. Tube 15 serves to transport water-soil mixture to earth pump. Nozzles 6 are used to cut the frontal slope of the soil, nozzles 7 are used for loosening the soil, nozzles 8 are used to cut the lateral slope of the soil, nozzles 9 are used to transport soil to the suction pharynx 2.

Dredging device dredger works as follows. In the process, water is supplied through the pipe 3 to the nozzles 6, 7, 8, 9 from the pump of the hydraulic ripper (not shown). The jets of water flowing from the nozzles 6, 7, 8 cut into the soil, separate it from the array and create a diffusion zone as a result of the active mixing of the jets with the soil. The jets of water flowing from the nozzles 9 are mixed with the soil in the diffusion zone and move it to the suction mouth 2 of the soil inlet 1 and then through the pipe 15 to the soil pump. In this case, water flowing out in the form of jets from nozzles 6, 7, 8, 9, first passes through cavitation generators of pressure pulsations 10, made in the form of a Venturi tube, in which the steady-state fluid flows into a pulsating one (see V.V. Pilipenko Cavitation self-sustained oscillations. - Kiev: Science Dumka, 1989, p. 5 - 79). The hydrodynamic effect of pulsating jets on the soil mass forms longitudinal and transverse waves. They excite elastic (natural) vibrations of the porous medium, which, in turn, lead to disruption of the continuity of the soil mass. Due to this, the effectiveness of hydraulic erosion of the soil is significantly increased.

To simplify the design of the soil sampling device, a cavitation generator of water pressure pulsations 11 can be installed not in front of each nozzle, but, for example, in front of the collector 4 (Fig. 6), or the generator 12 on the monitor 5 (Fig. 9). In this case, the pulsations of the flow pressure created in the cavitation generators 11, 12 will appear when water flows out of the nozzles and increase the efficiency of hydraulic loosening. However, the intensity of the flow pulsations in this case will slightly decrease in comparison with the installation of cavitation generators 10 immediately in front of the nozzles.

Claims (3)

1. A suction device for an dredging projectile, including a tip with a suction pharynx, a water supply channel for hydraulic loosening of the soil, a collector or a hydraulic monitor with nozzles, characterized in that the soil collection device is equipped with cavitation water pressure pulsation generators installed in front of the nozzles. 2. The soil intake device of the dredger projectile according to claim 1, characterized in that the cavitation generator of water pressure pulsations is installed in front of the collector. 3. The intake device of the dredger projectile according to claim 1, characterized in that the cavitation generator of the pulsations of the water pressure is installed on the monitor.

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