KR920001686Y1 - Apparatus for digging sewer in the sewer system - Google Patents

Abstract

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Description

Screw dredging device of dredger

1 is a partial schematic view of a dredger with a screw dredging device for explaining the present invention.

2 is a block diagram of a screw dredging device of the present invention.

3a, b is a partially enlarged cross-sectional view showing an embodiment of the present invention.

4a, b is a cross-sectional view showing another embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: dredge 3: jib frame means

4: deceleration motor 5: screw wing

5a: " "Type screw blade 6: Dredging cylinder

8: Fall prevention plate 8 ', 8 ": Fall prevention plate

8a: Fall prevention plate 9: Dewatering hole

The present invention is an improvement of the screw dredging device that automatically pumps the sediment accumulated in the manhole bottom in the dredger which removes sediment such as soil and various sediments deposited in the sewer pipe. Bend the screw blade outer periphery of the screw dredging device in a vertical state, or form a drop-proof diaphragm on the outer periphery of the screw wing by welding a separate steel plate spirally, or screw the blade itself. It is a screw dredging device with a drop-proof diaphragm formed by welding to the screw shaft by preventing the sediment from the manhole during dredging work like the water contained in it. The present invention relates to a screw dredging device of a dredger which doubles an upward movement action to increase dredging efficiency.

A dredging device, such as the one shown in FIG. 1, is equipped with a screw dredging device in an existing dredging device that scrapes sediment deposited in the sewer pipe to the bottom of the manhole, and then automatically spreads the sediment accumulated in the manhole. This dredging means is equipped with a jib frame means (3), which is operated ups and downs by an ups and downs hydraulic cylinder means (2) behind the existing dredger (1), the inside of the reducer The screw wing 5 which rotates by the reduction motor 4 comprised and the dredging cylinder 6 which wraps this screw blade 5 from the outside are the hydraulic pressure for lifting which a fixed end side was attached to the jib frame means 3, and is fixed. It is configured to descend from the inside of the jib frame means 3 by the cylinder means 7 to enter the manhole.

However, because the screw blade (5) of the screw dredging means as described above has a conventional configuration, the water to be transported, that is, the water flows down when the sediment is conveyed upward by the screw blade (5) and The sediment flows down the inner wall of the dredging cylinder 6 due to the rotational force, and the dredging efficiency of the sediment drops significantly. This is because the inner diameter of the dredging cylinder 6 is larger than the outer diameter of the screw blade 5. Due to the action of flowing down by the water contained therein when the precipitate conveyed upward from the lower side of the screw vanes 5 and the rotational force of the screw vanes 5 themselves, the precipitate is subjected to centrifugal force. As a result, the sediment is concentrated on the inner wall of the dredging cylinder 6, which further increases the phenomenon caused by the aforementioned water, and the inner wall of the dredging cylinder 6. It is a factor to make close contact with the deposits interfere with the flow of synergy of the sediment to be riding on a screw blade (5) upstream the transfer could not be carried out the dredging of sediment as effectively.

Therefore, the present invention has been improved and devised in order to improve dredging operation efficiency in consideration of the above-mentioned matters, and prevents the phenomenon of flowing down on the outer circumferential edge of the screw blades of the dredge cylinder which is installed to enable the lifting operation inside the jib frame means. To form a spiral anti-dropping plate or the screw blade itself. It is a constituent means for forming the drop prevention plate on the outer circumference by forming the shape. The dredging body by the centrifugal force generated by the rotational force and the phenomenon that the sediment transferred upward by the screw blade falls to the outer circumference of the wing during dredging work. The dredging work is more efficiently and quickly performed by doubling the efficiency of dredging by preventing the phenomenon of flowing down the inner wall, which will be described in detail with reference to the accompanying drawings.

Screws for pumping deposits accumulated in the manhole while decelerating and rotating by means of a reduction motor (4) in the dredging cylinder (6) inside the dredging cylinder (6), which is capable of lifting and lowering in the branch frame means (3) placed behind the dredger (1). In the dredging body composed of the blades (5), a drop preventing plate (8) is formed on the outer periphery of the screw blade (5) installed inside the dredging cylinder (6) in a spiral form from the bottom thereof, the sediment drop during dredging work And to prevent the centrifugation phenomenon, and as shown in the embodiment of FIG. 3b, a spiral drop preventing auxiliary plate 8 'having a large and small height between the screw shaft 5' and the drop preventing plate 8; And a plurality of dehydration holes 9 formed in the drop preventing partition 8, and the screw blade 5 itself is prevented from falling on the outer periphery, as shown in FIGS. 4A and 4B. Plate 8a formed " In order to improve the dredging efficiency of sediment by spirally welding the "type screw blade 5a" to the screw shaft 5 ', in particular, the height of the drop prevention plate 8a rises from the bottom of the screw to the top. Increasing the height accordingly, it may be advantageous to raise the sediment with a very large water content.

The present invention configured as described above is mounted inside the jib frame means (3) installed on the rear side of the dredger (1) and enters into a manhole (not shown) by lifting and lowering operation by lifting hydraulic cylinder means (7), etc. The sediment is gradually moved upward by acting to pump the sediment from the lower part of the screw blade 5 exposed at the lower side of the dredging cylinder 6, wherein the outer periphery of the screw wing 5 is horizontal to the screw blade 5 As a result of the falling prevention plate 8 formed in a spiral shape perpendicular to the state and spirally formed, the sediment rising on the screw blades 5 does not appear to flow to the outer periphery, as well as the rotational force of the screw blades 5. The fall prevention plate 8 prevents the phenomenon of centrifugal force acting on the sediment by Since centrifugation phenomenon to be able to expect the effect of exclusion can expect a seamless synergy of sediment will be able to write more quickly perform the dredging.

In addition, as shown in the embodiment shown in FIG. 3B, when the screw shaft 5 'and the drop preventing plate 8 have a large and small drop preventing auxiliary plate 8', 8 'in a spiral form, As the surface area of the screw blade 5 is increased, it is possible to enhance the compaction force for transporting the sediment upwards and at the same time suppress the centrifugal action acting on the sediment by the rotational force, so that the sediment movement force of the sediment can be expected to be improved. By dehydrating the water contained in the sediment to be moved up through the dehydration hole (9) perforated in the drop prevention plate (8) it can be expected to further improve the upward movement of the precipitate.

And 4a, b or another embodiment, the embodiment of the screw blade itself " "As a configuration in which the material composed of the shape is spirally welded to the screw shaft 5 ', this" Since the drop prevention plate 8a is formed on the outer circumferential edge of the "type screw blade 5a," the precipitate is prevented from flowing down to the outer circumferential edge and falling from the centrifugal action as in the above-described embodiment. The effect is to double the upward movement of the dredging so that dredging can be carried out efficiently and quickly.

The present invention is to form a spiral drop prevention plate on the outer circumference of the screw blades of the screw dredging device, or the screw blade itself " "When the sediment is pumped up, it is possible to prevent the sediment flowing up through the screw blades or to flow down the inner wall of the dredging cylinder by centrifugal action, and the ascending movement force of the sediment can double. It is a practical design with the advantage of improving dredging work quickly by improving the efficiency.

Claims (4)

Screw blades 5 for dredging operation while decelerating and rotating by means of a deceleration motor 4 or the like inside the dredging cylinder 6 configured to move up and down inside the jib frame means 3 placed behind the dredger 1. In the dredging device consisting of, the spiral protrusion plate 8 vertically installed in the outer periphery of the screw wing (5) installed in the dredging cylinder (6) to move up and down together, spirally from the bottom of the screw wing (5) Screw dredging device of dredger formed by. 2. The screw dredging device of a dredger according to claim 1, wherein a plurality of dehydration holes (9) are drilled in a spiral projecting plate (8). Dredger according to claim 1 or 2, wherein a spiral auxiliary plate (8 ') (8 ") is formed on the screw blade (5) between the screw shaft (5') and the spiral projecting plate (8). Screw dredger The cross section of claim 1 or 2 wherein the screw blade itself is " "To form a drop preventing plate 8a formed" Screw dredge device of the dredger, characterized in that the "screw type (5a) is spirally welded to the screw shaft (5 ').