SU992668A1 - Intake device of suction dredger - Google Patents

Description

(54) SUCTION DEVICE OF THE PLANT

The invention relates to hydromechanization and is intended for the development of soils in underwater fences.

A dredger suction device is known, comprising a suction pipe and a conical suction tip tlj.

The disadvantage of this device is the formation of ground suspensions in the water area of the bottom, since when the soil slides down from the slope, small particles of it are weighed and the resulting vortices in the water area spread across the entire water area.

The closest to the proposed y is a suction device of the dredger, which includes a suction pipe located on the frame and a suction tip 2.

A disadvantage of the known device is the formation of ground suspensions in the bottom water area, which occurs because the suction flow of water is directed along the forming slope only in the lower part of the slope, in the suction zone. There is no upper part of the stream slope along the slope guides (from top to bottom), so small particles are carried to the far points of the bottom water area.

The purpose of the invention is to protect the water area from contamination with soil suspension, by directing the intake water flow along the soil forming the soil ija for all their length.

The goal is achieved by the fact that in the suction device of the dredge, including the installed

10 on the frame of the suction pipe with a tip, the latter is made of side parts and the upper part connecting them, which is installed with the possibility of axial movement by means of a drive.

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In addition, the drive device is made in the form of a hydraulic cylinder.

FIG. 1 schematically shows the proposed device, side view; in fig. 2 - the same, top view.

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Claims (2)

The device consists of a suction pipe 2 placed on the frame 1 with a suction tip 3. The suction tip 3 is made of side parts 4, the rear wall 5 and the upper part 6 attached to the rod 7, the g of the cylinder 8 placed on the frame 1, and swivel 9 stem 7 with the upper part 6, power supply hose 10 of the cylinder 8 and ground 11 for 30 bo. The device works as follows. When the rod 7 is fully pushed into the hydraulic cylinder 8, i.e. With the upper part 6 fully detached from the side parts 4 to the left, the device is lowered into the water area of the bottom. Include in the work of the dredger. Into the suction tip 3, water is sucked in, coming from the suction pipe 2, then the device is lowered to the bottom. Under the action of the weight of the frame 1, the suction pipe 2 and the suction tip 3, the side portions 4 of the tip are pressed into the ground 11. In this case, the soil 11 is eroded by the flow flowing into the mouth of the LV of the tip 3. The soil particles are sucked into the tip 3. The soil 11 is eroded from the backward forming sun roofs walls 5, is sucked into tip 3. A slope of soil to be formed forms, which gradually moves away from forming ST and takes the position DE, and then FL. As the slope moves, to maintain a high intensity of soil erosion, The cylinder 8, extending the rod 7, slides the upper part 6 from point C to the sides of point K. Water is sucked into the gap between the end of the upper part 6 and the soil deflection (line FL in Fig. 1). The upper part 6 is pushed until its end reaches point K, which forms the extreme KM of side 4 of tip 3. When all the soil is enclosed in the tip, i.e. between (side parts 4 and 5 and the upper part 6, it will be blurred and thrown into the suction pipe 2, the device is worn above the ground 11, moved to the right (or left), the upper part 6 is pushed, the tip is pressed into the ground, the ground is made sliding the upper part 6. So, moving the tip to the right over and over again, make a full penetration to the right of a layer with a thickness equal to the height of the side parts 4 of tip 3. After penetrating to the right, penetrating to the left and then before excavating all the soil in the bottom. , t how the suction flow of water in the space bounded by the walls, the top part of the tip and the soil mass performs active work on erosion and entrainment of the soil; during the development of the soil no ground suspensions are formed in the water area, as the flow (shown by arrows in Fig. 1) is directed along the slope of the soil in the direction of the mouth of the suction tip. The claims 1. The suction device of the dredge, including a suction pipe mounted on the frame with a tip, characterized in that, in order to protect the water area from soil contamination by directing the intake of water along the soil forming the slope throughout their entire length, the tip is made of the side parts and the upper part connecting them, mounted for axial movement by means of a drive. 2. The device according to claim 1, characterized in that the drive is made in the form of a hydraulic cylinder. Sources of information taken into account in the examination 1.Shkundin BM Suction dredgers, M., Energie, 1968, pp. 146-150. 2. Kharin A.I. Development of soils by floating suction dredges, M, Stroyizdat, 1966, p. 78, fig. 34 (prototype). 2 / // z. / 9ui.2