Dredger mud conveying pipe with filtering device

Abstract

The dredger mud conveying pipe with the filtering device comprises a main connecting pipe, a cleaning pipe and a filtering assembly, the mud conveying pipe is provided with a disconnection position, and annular plates are arranged at the two ends of the disconnection position of the mud conveying pipe; the two ends of the main connecting pipe are hermetically and rotationally connected with the periphery of the annular plate; the cleaning pipe is a square pipeline, the width of the cleaning pipe is matched with the outer diameter of the main connecting pipe, the axis of the cleaning pipe perpendicularly intersects with the axis of the main connecting pipe, one end of the cleaning pipe is connected with the main connecting pipe in a sealed mode, a sealing cover is arranged at the other end of the cleaning pipe, and one side of the cleaning pipe is parallel to the annular plate on one side. The filtering assembly is arranged in the main connecting pipe and used for preventing large-size impurities from passing through. According to the utility model, the problem that large-size sundries enter the mud conveying pipe is solved, and the situation that the mud pump is damaged by the large-size sundries is avoided.

Description

Technical Field

[0001] This utility model relates to the field of mud conveying pipe technology, and in particular to a mud conveying pipe for a dredger with a filtration device. Background Technology

[0002] In waterway dredging projects, cutter suction dredgers are common construction equipment. During operation, a cutter suction dredger uses a rotating cutter head to cut and break up underwater soil layers. An underwater mud pump creates negative pressure, drawing the broken soil blocks into the suction port of the dredging pipe. The blocks are then transported by the mud pump and pressurized before being discharged by another pressurized mud pump. During dredging operations, foreign objects such as construction waste, stones, and other large debris are often sucked into the dredging pipe. Excessive accumulation of these debris can clog the mud pump, causing damage. Current technology only incorporates a filter structure at the end of the dredging pipe, leading to debris accumulation on one side of the filter and making cleaning difficult. Therefore, optimization of the filtration system is necessary. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the present invention provides a dredging vessel mud conveying pipe with a filtration device, which solves the problem of damage to the mud pump caused by large-sized debris entering the mud conveying pipe.

[0004] According to an embodiment of this utility model, a dredger conveying pipe with a filtering device includes a main connecting pipe, a cleaning pipe, and a filtering assembly. The conveying pipe has a break point, and annular plates are provided at both ends of the break point. The two ends of the main connecting pipe are rotatably and sealed to the outer circumference of the annular plates. The cleaning pipe is a square pipe, the width of which is adapted to the outer diameter of the main connecting pipe. The axis of the cleaning pipe is perpendicular to the axis of the main connecting pipe. One end of the cleaning pipe is sealed to the main connecting pipe, and the other end of the cleaning pipe is provided with a sealing cap. One side of the cleaning pipe is parallel to one side of the annular plate. The filtering assembly is disposed inside the main connecting pipe to block large-sized debris from passing through.

[0005] The technical principle of this utility model is as follows: after the filter component intercepts large pieces of debris, the debris is discharged from the cleaning pipe, thereby preventing large debris from passing through the mud pump.

[0006] Preferably, the filter assembly includes an annular sliding plate, an annular rotating plate, and a filter screen. The outer diameter of the annular sliding plate is smaller than the outer diameter of the annular plate. The annular plate has a sliding groove in the vertical direction, and the cleaning pipe is provided with a corresponding extension groove. The edge of the annular sliding plate is slidably connected to the sliding groove and the extension groove. An annular rotating plate is rotatably mounted on the side of the annular sliding plate near the middle of the main connecting pipe. The filter screen has a barrel-shaped structure, and the axis of the filter screen coincides with the axis of the main connecting pipe. The open end of the filter screen is fixedly connected to the annular rotating plate. A slag discharge hole is provided near the open end of the filter screen, and a first positioning bolt is provided between the annular sliding plate and the annular rotating plate.

[0007] Preferably, the filter screen is made of welded steel bars.

[0008] Preferably, a sealing ring is provided between the sealing cap and the cleaning tube, and fixing bolts are provided between the sealing cap and the cleaning tube.

[0009] Preferably, the end of the cleaning pipe is provided with a flange face.

[0010] Preferably, a second positioning bolt is provided between the cleaning pipe and the annular plate.

[0011] Preferably, the annular sliding plate is provided with lifting holes.

[0012] Preferably, a conical sleeve is provided between the mud conveying pipe and the annular plate.

[0013] Compared with existing technologies, this utility model has the following advantages: The utility model has a simple structure. By setting a filter shaft at the front end of the mud conveying pipe, it avoids large debris from entering the mud pump and causing damage. When it is necessary to discharge debris from the filter device, rotating the main connecting pipe positions the outlet of the cleaning pipe downwards for easy cleaning. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a top view of the filter component of this utility model.

[0016] Figure 3 This is a side view of the filter component of this utility model.

[0017] Figure 4 This is a schematic diagram of the extension groove of this utility model.

[0018] In the above attached diagram: 1. Sludge conveying pipe; 2. Cleaning pipe; 3. Sealing cover; 4. Annular plate; 5. Annular rotating plate; 6. Filter screen; 7. Annular sliding plate; 8. Slag discharge hole; 9. Main connecting pipe; 10. Sleeve; 11. Extension trough. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 As shown in the figure, this utility model embodiment proposes a dredging pipe with a filtration device, including a main connecting pipe 9, a cleaning pipe 2, and a filter assembly. The dredging pipe 1 has a break point, and annular plates 4 are provided at both ends of the break point. The annular plates 4 facilitate the installation and connection of other components. The two ends of the main connecting pipe 9 are rotatably sealed to the outer circumference of the annular plates 4. The cleaning pipe 2 is a square pipe, its width matching the outer diameter of the main connecting pipe 9. The axis of the cleaning pipe 2 intersects perpendicularly with the axis of the main connecting pipe 9. One end of the cleaning pipe 2 is sealed to the main connecting pipe 9, and the other end is provided with a sealing cap 3. One side of the cleaning pipe 2 is parallel to one side of the annular plate 4. The filter assembly is disposed inside the main connecting pipe 9 to block large debris from passing through. This filter device is located at the front end of the dredging pipe 1, i.e., the end furthest from the mud pump. The main connecting pipe 9 and the cleaning pipe 2 are larger than the outline dimensions of the filter assembly. When cleaning debris from inside the filter assembly, the main connecting pipe 9 is rotated so that the cleaning pipe 2 faces downwards, allowing debris to drain from the main connecting pipe 9. During normal operation, the cleaning pipe 2 is rotated to an upward position to prevent large pieces of debris from clogging the sludge conveying pipe 1. In this embodiment, there is a gap between the ends of the filter device and the sludge conveying pipe 1, with the filter device positioned above the water surface for easy cleaning by personnel.

[0021] like Figure 2 , 3As shown in Figure 4, preferably, the filter assembly includes an annular sliding plate 7, an annular rotating plate 5, and a filter screen 6. The outer diameter of the annular sliding plate 7 is smaller than the outer diameter of the annular plate 4. The annular plate 4 has a sliding groove in the vertical direction, and the cleaning pipe 2 is provided with a corresponding extension groove 11. The edge of the annular sliding plate 7 is slidably connected to the sliding groove and the extension groove 11. The annular rotating plate 5 is rotatably mounted on the side of the annular sliding plate 7 near the middle of the main connecting pipe 9. The filter screen 6 has a barrel-shaped structure, and the axis of the filter screen 6 coincides with the axis of the main connecting pipe 9. The open end of the filter screen 6 is fixedly connected to the annular rotating plate 5. A slag discharge hole 8 is provided near the open end of the filter screen 6, and a first positioning bolt is provided between the annular sliding plate 7 and the annular rotating plate 5. In this embodiment, the length of the filter screen 6 is smaller than the width of the cleaning pipe 2. When the filter screen 6 needs maintenance after long-term use, the entire filter assembly can be removed from the cleaning pipe 2 by moving the annular sliding plate 7 upward. During normal operation, the discharge hole 8 is positioned with the filter screen 6 facing upwards. Large debris will not flow through the filter screen 6 to the mud pump due to gravity. When cleaning debris from the filter screen 6, rotating the filter screen 6 causes the discharge hole 8 to face downwards, and simultaneously, the opening of the cleaning pipe 2 also rotates downwards. Debris is discharged from the discharge hole 8 and then through the cleaning pipe 2. This facilitates the discharge of debris from the filter screen 6 to the outside of the mud conveying pipe 1, making it easier to clean debris inside the mud conveying pipe 1.

[0022] Preferably, the filter screen 6 is made of welded steel bars and can withstand the impact of silt or debris at the bottom of the water.

[0023] Preferably, a sealing ring is provided between the sealing cover 3 and the cleaning pipe 2, and fixing bolts are provided between the sealing cover 3 and the cleaning pipe 2. This prevents pressure leakage from affecting the working state of the mud conveying pipe 1.

[0024] Preferably, the end of the cleaning pipe 2 is provided with a flange face, which facilitates the installation of a sealing ring and improves the sealing performance.

[0025] Preferably, a second positioning bolt is provided between the cleaning pipe 2 and the annular plate 4, so that the cleaning pipe 2 can maintain the position of the discharge port and avoid rotation during operation.

[0026] Preferably, the annular sliding plate 7 is provided with a lifting hole. When the overall weight of the filter assembly is large, the operator can use the lifting hole to move the filter assembly outside the main connecting pipe 9 for maintenance.

[0027] Preferably, a conical sleeve 10 is provided between the mud conveying pipe 1 and the annular plate 4 to prevent the step between the mud conveying pipe 1 and the main connecting pipe 9 from affecting the sliding of the mud conveying pipe.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A dredging vessel conveying pipe with a filtering device, characterized in that: The system includes a main connecting pipe (9), a cleaning pipe (2), and a filter assembly. The mud conveying pipe (1) has a break point, and annular plates (4) are provided at both ends of the break point. The two ends of the main connecting pipe (9) are rotatably and sealed to the outer circumference of the annular plates (4). The cleaning pipe (2) is a square pipe, and the width of the cleaning pipe (2) is adapted to the outer diameter of the main connecting pipe (9). The axis of the cleaning pipe (2) intersects perpendicularly with the axis of the main connecting pipe (9). One end of the cleaning pipe (2) is sealed to the main connecting pipe (9), and the other end of the cleaning pipe (2) is provided with a sealing cap (3). One side of the cleaning pipe (2) is parallel to one of the annular plates (4). The filter assembly is located inside the main connecting pipe (9) to block large debris from passing through.

2. The dredging pipe with a filtration device as described in claim 1, characterized in that: The filter assembly includes an annular sliding plate (7), an annular rotating plate (5), and a filter screen (6). The outer diameter of the annular sliding plate (7) is smaller than that of the annular plate (4). The annular plate (4) has a sliding groove in the vertical direction. The cleaning pipe (2) is provided with a corresponding extension groove (11). The edge of the annular sliding plate (7) is slidably connected to the sliding groove and the extension groove (11). The annular rotating plate (5) is rotatably provided on the side of the annular sliding plate (7) near the middle of the main connecting pipe (9). The filter screen (6) has a barrel-shaped structure. The axis of the filter screen (6) coincides with the axis of the main connecting pipe (9). The open end of the filter screen (6) is fixedly connected to the annular rotating plate (5). A slag discharge hole (8) is provided near the open end of the filter screen (6). A first positioning bolt is provided between the annular sliding plate (7) and the annular rotating plate (5).

3. The dredging pipe with a filtration device as described in claim 2, characterized in that: The filter screen (6) is made of welded steel bars.

4. The dredging pipe with a filtration device as described in claim 1, characterized in that: A sealing ring is provided between the sealing cap (3) and the cleaning tube (2), and fixing bolts are provided between the sealing cap (3) and the cleaning tube (2).

5. The dredging pipe with a filtration device as described in claim 1, characterized in that: The cleaning pipe (2) has a flange face at its end.

6. The dredging pipe with a filtration device as described in claim 1, characterized in that: A second positioning bolt is provided between the cleaning pipe (2) and the annular plate (4).

7. The dredging pipe with a filtration device as described in claim 2, characterized in that: The annular sliding plate (7) is provided with a hoisting hole.

8. The dredging pipe with a filtration device as described in claim 1, characterized in that: A conical sleeve (10) is provided between the mud conveying pipe (1) and the annular plate (4).

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