A method for filtering, draining and discharging slurry into the hopper of a trailing suction hopper dredger and an implementation device thereof

Abstract

The present invention relates to the field of separation technology, and specifically relates to a method and an implementation device for filtering and draining the slurry entering the cabin of a trailing suction hopper dredger, including a pipe body. Pressure regulating valves are fixedly connected to both ends of the pipe body respectively. A geotextile filter cloth is fixedly sleeved outside the pipe body. Fixing rings are fixedly sleeved at both ends of the geotextile filter cloth respectively. A drain pipe is provided on one of the fixing rings. A number of water outlet holes adapted to the geotextile filter cloth are opened on the pipe body. A water collecting pipe is sleeved outside the geotextile filter cloth; both ends of the water collecting pipe are rotatably connected to the two fixing rings respectively. A cleaning area division unit is fixedly connected inside the water collecting pipe, and a control shell is fixedly installed on the outer wall of the water collecting pipe; it is not necessary to cooperate with a lifting device to disassemble the pipe body, and the geotextile filter cloth can be directly cleaned, and the impurity layer on the geotextile filter cloth is discharged through a waste discharge pipe, improving the efficiency of later maintenance.

Description

Technical Field

[0001] The present invention relates to the field of separation technology, and particularly to a method and an implementation device for filtering and draining the slurry entering the cabin of a trailing suction hopper dredger. Background Art

[0002] A trailing suction hopper dredger is a ship that can self-excavate sediment and load and unload in rivers, lakes and seas. Filtration separation is another solid-liquid separation technology that uses a filter medium to separate solid-liquid mixtures. It can be used in the process of the trailing suction hopper dredger loading into the cabin. Through the filter material, the separation and discharge of the slurry in the cabin are realized, and the effective loading capacity of the mud cabin is increased.

[0003] It is found through the prior art retrieved that the Chinese patent with the publication number CN116078017A discloses a method and an implementation device for filtering and draining the slurry entering the cabin of a trailing suction hopper dredger. Through filtering and draining, the pipeline conveying flow is reduced and the conveying concentration is increased.

[0004] However, it is worth considering that although the geotextile filter cloth can achieve filtering and draining, with the increase of the use time, an impurity layer is likely to form on the inner surface of the geotextile filter cloth, and the impurity layer affects the efficiency of filtering and draining. In the later stage, the staff needs to regularly cooperate with the lifting equipment to disassemble the filter pipeline, which affects the later maintenance efficiency and has certain limitations.

[0005] Therefore, in order to solve the above problems, the emergence of a related facility that more meets the usage requirements is needed. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a method and an implementation device for filtering and draining the slurry entering the cabin of a trailing suction hopper dredger to solve the problem that an impurity layer is likely to form on the inner surface of the geotextile filter cloth, and the impurity layer affects the efficiency of filtering and draining, and the filter pipeline needs to be disassembled by the staff in the later stage.

[0007] Based on the above purpose, the present invention provides an implementation device for filtering and draining the slurry entering the cabin of a trailing suction hopper dredger, including a pipe body. Pressure regulating valves are respectively fixedly connected to both ends of the pipe body. A geotextile filter cloth is fixedly sleeved outside the pipe body. Fixing rings are respectively fixedly sleeved at both ends of the geotextile filter cloth. A drain pipe is provided on one of the fixing rings. A number of water outlet holes adapted to the geotextile filter cloth are opened on the pipe body. A water collecting pipe is sleeved outside the geotextile filter cloth;

[0008] Both ends of the water collecting pipe are rotatably connected to two fixing rings respectively. A cleaning area dividing unit is fixedly connected inside the water collecting pipe. A control shell is fixedly installed on the outer wall of the water collecting pipe. An air inlet pipe is provided on the control shell, and a one-way valve is provided on the air inlet pipe. The control shell is equipped with an air inlet control mechanism adapted to the cleaning area dividing unit. The pipe body is equipped with a rotation adjustment structure adapted to the control shell. The pipe body is respectively provided with an exhaust pipe and a dirt discharge pipe, and switch valves are respectively provided on the drain pipe, the exhaust pipe and the dirt discharge pipe.

[0009] Optionally, the cleaning area dividing unit includes two side plates fixedly installed inside the water collecting pipe. A number of partition plates arranged in sequence are fixedly connected between the two side plates, and the partition plates and the side plates are respectively in contact with the geotextile filter cloth.

[0010] Optionally, the rotation adjustment structure includes a rotating sleeve sleeved outside the water collecting pipe. The rotating sleeve is equipped with a synchronization mechanism adapted to the control shell. The pipe body is equipped with a driving member adapted to the rotating sleeve.

[0011] Optionally, the driving member includes two toothed rings fixedly sleeved outside the rotating sleeve. Both ends of the pipe body are respectively fixedly connected with motor seats. The motor seats are fixedly installed with servo motors. The output ends of the servo motors are fixedly connected with gears, and the gears are meshed with the toothed rings.

[0012] Optionally, the synchronization mechanism includes two movable rings sleeved outside the water collecting pipe, and the control shell is located between the two movable rings. The rotating sleeve is equipped with a guiding member adapted to the control shell. Positioning blocks are respectively fixedly connected to both sides of the control shell. A number of positioning grooves adapted to the positioning blocks are formed on the movable rings, and the positioning blocks are located in the corresponding positioning grooves. A number of fixing frames are fixedly connected to the outer wall of the rotating sleeve. Electromagnets are fixedly connected to the fixing frames. A number of iron plates adapted to the electromagnets are fixedly connected to the movable rings. Elastic members adapted to the iron plates are installed on the fixing frames.

[0013] Optionally, the elastic member includes two guiding columns fixedly installed on the fixing frame. Adjacent two guiding columns penetrate through the corresponding iron plates, and the iron plates and the fixing frames are connected by compression springs.

[0014] Optionally, the guiding member includes at least one guiding ring fixedly installed on the inner wall of the rotating sleeve. A guiding groove is formed on the inner wall of the guiding ring. A guiding strip is slidably arranged in the guiding groove, and the guiding strip is fixedly connected with the control shell.

[0015] The present invention also provides a method for filtering and draining the mud entering the cabin of a trailing suction hopper dredger, including the trailing suction hopper dredger mud filtering and draining implementation device as described above, and including the following steps:

[0016] Step 1: The staff respectively fix the pressure regulating valves at both ends of the pipe body on the inlet pipe through flanges. The water in the pipe body is filtered through the water outlet holes on the pipe body and the geotextile filter cloth to between the geotextile filter cloth and the water collecting pipe, and the water is discharged through the drain pipe on one of the fixing rings.

[0017] Step 2: When the impurity layer accumulated on the inner wall of the geotextile filter cloth needs to be cleaned, close the pressure regulating valves at both ends of the pipe body. The external water pump injects water reversely into the water collecting pipe through the drain pipe, and the water enters the pipe body through the geotextile filter cloth, so that the impurity layer on the geotextile filter cloth is soaked in water.

[0018] Step 3: Open the switch valve on the exhaust pipe. The external air pump is connected to the intake pipe through a hose. The gas enters the control shell through the intake pipe, and the gas is controlled to enter the cleaning area dividing unit through the intake control mechanism on the control shell. The gas enters the pipe body through the geotextile filter cloth corresponding to the cleaning area dividing unit.

[0019] Step 4: Clean the impurity layer on the geotextile filter cloth with the flowing gas, and the rotation adjustment structure drives the control shell and the water collecting pipe to rotate, so that the cleaning area dividing unit on the water collecting pipe moves to different positions on the geotextile filter cloth, and then clean different positions on the geotextile filter cloth with the gas. The switch valve on the exhaust pipe is in the open state, and the gas entering the pipe body is discharged through the exhaust pipe.

[0020] Step 5: When the impurity layer on the geotextile filter cloth does not need to be cleaned, open the switch valve on the impurity discharge pipe. The external water pump continuously injects water into the water collecting pipe through the drain pipe, so that the water mixed with impurities in the pipe body is discharged through the impurity discharge pipe.

[0021] Advantages of the present invention: When the impurity layer accumulated on the inner wall of the geotextile filter cloth needs to be cleaned, the pressure regulating valves at both ends of the pipe body are closed, and an external water pump injects water reversely into the collecting pipe through the drain pipe. The water enters the pipe body through the geotextile filter cloth, so that the impurity layer on the geotextile filter cloth is immersed in water. The switch valve on the exhaust pipe is opened, and an external air pump is connected to the air inlet pipe through a hose. The gas enters the control shell through the air inlet pipe, and the gas is controlled to enter the cleaning area division unit through the air inlet control mechanism on the control shell. The gas enters the pipe body through the geotextile filter cloth corresponding to the cleaning area division unit, and the impurity layer on the geotextile filter cloth is cleaned by the flowing gas. Moreover, the rotation adjustment structure drives the control shell and the collecting pipe to rotate, so that the cleaning area division unit on the collecting pipe moves to different positions on the geotextile filter cloth, and then different positions on the geotextile filter cloth are cleaned by the gas. And the switch valve on the exhaust pipe is in an open state, and the gas entering the pipe body is discharged through the exhaust pipe. When the impurity layer on the geotextile filter cloth does not need to be cleaned, the switch valve on the impurity discharge pipe is opened, and an external water pump continuously injects water into the collecting pipe through the drain pipe, so that the water mixed with impurities in the pipe body is discharged through the impurity discharge pipe. It is not necessary to cooperate with a lifting device to disassemble the pipe body, and the geotextile filter cloth can be directly cleaned, and the impurity layer on the geotextile filter cloth is discharged through the impurity discharge pipe, improving the efficiency of later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 One of the overall structural schematic diagrams of the embodiment of the present invention;

[0024] Figure 2 Two of the overall structural schematic diagrams of the embodiment of the present invention;

[0025] Figure 3 The internal structural schematic diagram of the rotating sleeve of the embodiment of the present invention;

[0026] Figure 4 The external structural schematic diagram of the collecting pipe of the embodiment of the present invention;

[0027] Figure 5 One of the structural schematic diagrams of the control shell of the embodiment of the present invention;

[0028] Figure 6 Two of the structural schematic diagrams of the control shell of the embodiment of the present invention;

[0029] Figure 7One of the schematic structural diagrams of the sealing and resetting member in the embodiment of the present invention;

[0030] Figure 8 Another schematic structural diagram of the sealing and resetting member in the embodiment of the present invention;

[0031] Figure 9 Schematic structural diagram of the interior of the water collecting pipe in the embodiment of the present invention;

[0032] Figure 10 Schematic structural diagram of the geotextile filter cloth and the pipe body in the embodiment of the present invention;

[0033] Figure 11 Schematic structural diagram of the movable ring in the embodiment of the present invention;

[0034] Figure 12 Schematic structural diagram of the fixing frame in the embodiment of the present invention.

[0035] The markings in the figure are:

[0036] 1. Pipe body; 2. Pressure regulating valve; 3. Geotextile filter cloth; 4. Fixed ring; 5. Drain pipe; 6. Water collecting pipe; 7. Control shell; 8. Air inlet pipe; 9. Rotating sleeve; 10. Exhaust pipe; 11. Miscellaneous discharge pipe; 12. Side plate; 13. Partition plate; 14. Rectangular hole; 15. Opening and closing plate; 16. Support column; 17. Tensile spring; 18. Support ring; 19. Groove; 20. Square pipe; 21. Sealing sleeve; 22. Sealing gasket; 23. Guide ring; 24. Guide groove; 25. Guide strip; 26. Positioning block; 27. Movable ring; 28. Positioning groove; 29. Fixing frame; 30. Iron plate; 31. Electromagnet; 32. Guide post; 33. Compression spring; 34. Gear ring; 35. Motor base; 36. Servo motor; 37. Gear. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to specific embodiments.

[0038] Embodiment 1, given by Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 10 The present invention includes a pipe body 1. Pressure regulating valves 2 are fixedly connected to both ends of the pipe body 1. A geotextile filter cloth 3 is fixedly sleeved outside the pipe body 1. Fixed rings 4 are fixedly sleeved at both ends of the geotextile filter cloth 3. A drain pipe 5 is provided on one of the fixed rings 4. A number of water outlet holes adapted to the geotextile filter cloth 3 are formed on the pipe body 1. A water collecting pipe 6 is sleeved outside the geotextile filter cloth 3;

[0039] Both ends of the water collecting pipe 6 are rotatably connected to two fixing rings 4 respectively. A cleaning area dividing unit is fixedly connected inside the water collecting pipe 6. A control shell 7 is fixedly installed on the outer wall of the water collecting pipe 6. An air inlet pipe 8 is provided on the control shell 7, and a check valve is provided on the air inlet pipe 8. The control shell 7 is equipped with an air inlet control mechanism adapted to the cleaning area dividing unit. The pipe body 1 is equipped with a rotation adjustment structure adapted to the control shell 7. An exhaust pipe 10 and a waste discharge pipe 11 are respectively provided on the pipe body 1, and switch valves are respectively provided on the drain pipe 5, the exhaust pipe 10 and the waste discharge pipe 11. When the impurity layer accumulated on the inner wall of the geotextile filter cloth 3 needs to be cleaned, the pressure regulating valves 2 at both ends of the pipe body 1 are closed. An external water pump injects water reversely into the water collecting pipe 6 through the drain pipe 5. The water enters the pipe body 1 through the geotextile filter cloth 3, so that the impurity layer on the geotextile filter cloth 3 is immersed in water. The switch valve on the exhaust pipe 10 is opened. An external air pump is connected to the air inlet pipe 8 through a hose. The gas enters the control shell 7 through the air inlet pipe 8. The gas is controlled to enter the cleaning area dividing unit through the air inlet control mechanism on the control shell 7. The gas enters the pipe body 1 through the geotextile filter cloth 3 corresponding to the cleaning area dividing unit. The impurity layer on the geotextile filter cloth 3 is cleaned by the flowing gas. And the rotation adjustment structure drives the control shell 7 and the water collecting pipe 6 to rotate, so that the cleaning area dividing unit on the water collecting pipe 6 moves to different positions on the geotextile filter cloth 3, and then different positions on the geotextile filter cloth 3 are cleaned by the gas. And the switch valve on the exhaust pipe 10 is in an open state. The gas entering the pipe body 1 is discharged through the exhaust pipe 10. When the impurity layer on the geotextile filter cloth 3 does not need to be cleaned, the switch valve on the waste discharge pipe 11 is opened. An external water pump continuously injects water into the water collecting pipe 6 through the drain pipe 5, so that the water mixed with impurities in the pipe body 1 is discharged through the waste discharge pipe 11. Without the cooperation of a lifting device, the pipe body 1 can be disassembled, and the geotextile filter cloth 3 can be directly cleaned, and the impurity layer on the geotextile filter cloth 3 is discharged through the waste discharge pipe 11, improving the efficiency of later maintenance.

[0040] Embodiment 2, on the basis of Embodiment 1, by Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 、 Figure 9 、 Figure 11 and Figure 12Given that the cleaning area division unit includes two side plates 12 fixedly installed in the water collecting pipe 6, a number of partition plates 13 arranged in sequence are fixedly connected between the two side plates 12, and the partition plates 13 and the side plates 12 are respectively in contact with the geotextile filter cloth 3. The rotation adjustment structure includes a rotating sleeve 9 sleeved outside the water collecting pipe 6. The rotating sleeve 9 is equipped with a synchronization mechanism adapted to the control shell 7. The pipe body 1 is equipped with a driving member adapted to the rotating sleeve 9. The driving member includes two toothed rings 34 fixedly sleeved outside the rotating sleeve 9. Both ends of the pipe body 1 are respectively fixedly connected with motor seats 35. The motor seats 35 are fixedly installed with servo motors 36. The output end of the servo motor 36 is fixedly connected with a gear 37, and the gear 37 meshes with the toothed ring 34. The synchronization mechanism includes two movable rings 27 sleeved outside the water collecting pipe 6, and the control shell 7 is located between the two movable rings 27. The rotating sleeve 9 is equipped with a guiding member adapted to the control shell 7. Two positioning blocks 26 are respectively fixedly connected to both sides of the control shell 7. A number of positioning grooves 28 adapted to the positioning blocks 26 are formed on the movable ring 27, and the positioning blocks 26 are located in the corresponding positioning grooves 28. A number of fixing frames 29 are fixedly connected to the outer wall of the rotating sleeve 9. Electromagnets 31 are fixedly connected to the fixing frames 29. A number of iron plates 30 adapted to the electromagnets 31 are fixedly connected to the movable ring 27. The fixing frames 29 are equipped with elastic members adapted to the iron plates 30. The elastic members include two guiding columns 32 fixedly installed on the fixing frames 29. Adjacent two guiding columns 32 penetrate through the corresponding iron plates 30, and the iron plates 30 and the fixing frames 29 are connected by compression springs 33. The guiding member includes at least one guiding ring 23 fixedly installed on the inner wall of the rotating sleeve 9. A guiding groove 24 is formed on the inner wall of the guiding ring 23. A guiding strip 25 is slidably arranged in the guiding groove 24, and the guiding strip 25 is fixedly connected to the control shell 7;

[0041] Through the cooperation of the side plates 12 and the partition plates 13, the geotextile filter cloth 3 is divided into several cleaning partitions. When gas enters between the side plates 12 and the partition plates 13, the geotextile filter cloth 3 corresponding to the cleaning partition can be cleaned. The servo motor 36 drives the gear 37 to rotate. The gear 37 drives the rotating sleeve 9 to rotate through the toothed ring 34. The rotating sleeve 9 drives the guiding ring 23 to rotate relative to the control shell 7. The guiding strip 25 slides in the guiding groove 24. Through the design of the guiding ring 23, the guiding groove 24 and the guiding strip 25, the rotating sleeve 9 rotates smoothly relative to the control shell 7 and the water collecting pipe 6. The water collecting pipe 6 drives the control shell 7 and the water collecting pipe 6 to rotate synchronously through the fixing frames 29, the movable rings 27 and the positioning blocks 26. The water collecting pipe 6 can drive the side plates 12 and the partition plates 13 to rotate relative to the geotextile filter cloth 3, changing the position where the geotextile filter cloth 3 is cleaned, so as to achieve the purpose of cleaning different positions on the geotextile filter cloth 3 without dismantling the pipe body 1, which is convenient for later maintenance.

[0042] Embodiment 3, on the basis of Embodiment 2, by Figure 3 、 Figure 4, Figure 5 , Figure 7 and Figure 8 are provided. The intake control mechanism includes a plurality of opening and closing plates 15 disposed in the control housing 7. The number of positioning grooves 28 provided is one more than the number of opening and closing plates 15 provided. The control housing 7 is a cavity structure with an open bottom end. A plurality of rectangular holes 14 adapted to the opening and closing plates 15 are formed in the inner wall of the water collecting pipe 6, and the number of rectangular holes 14 and opening and closing plates 15 provided is the same. A support column 16 is fixedly connected to the opening and closing plate 15. One end of the support column 16 far from the opening and closing plate 15 penetrates through the control housing 7. A plurality of support rings 18 arranged in sequence are fixedly connected in the rotary sleeve 9, and the number of support rings 18 and support columns 16 provided is the same. A groove 19 adapted to the support column 16 is formed in the inner wall of the support ring 18, and a plurality of grooves 19 are staggered. One end of the support column 16 far from the opening and closing plate 15 is in contact with the inner wall of the support ring 18. The opening and closing plate 15 is provided with a sealing and resetting member adapted to the control housing 7. The sealing and resetting member includes a sealing sleeve 21 fixedly installed on the opening and closing plate 15, and the sealing sleeve 21 is sleeved outside the support column 16. A square tube 20 is slidably disposed in the sealing sleeve 21. The top end of the square tube 20 is fixedly connected to the inner wall of the control housing 7. The opening and closing plate 15 and the inner wall of the control housing 7 are connected by a tension spring 17, and the tension spring 17 is located in the square tube 20. A sealing pad 22 is fixedly installed on the opening and closing plate 15, and the sealing pad 22 is in contact with the outer wall of the water collecting pipe 6;

[0043] The tension spring 17 is in a stretched state in its initial state. The tension spring 17 exerts a pulling force on the opening and closing plate 15 to make the end of the support column 16 and the inner wall of the support ring 18 in close contact, and the gasket 22 is in contact with the outer wall of the water collecting pipe 6. The gasket 22 seals the rectangular holes 14, and several rectangular holes 14 are in a closed state. When it is necessary to blow gas into the first cleaning partition divided by the cleaning area division unit through the first rectangular hole 14, the electromagnet 31 is turned on. The electromagnet 31 exerts a magnetic force on the iron plate 30. The electromagnet 31 drives the iron plate 30 and the movable ring 27 to move, so that the positioning block 26 disengages from the corresponding positioning groove 28, and the iron plate 30 slides relative to the guide post 32. The compression spring 33 is in a compressed state, and the iron plate 30 is in contact with the electromagnet 31. At this time, the fixed relationship between the rotating sleeve 9 and the control housing 7 is released. By driving the gear 37 to rotate through the servo motor 36, the rotating sleeve 9 can rotate relative to the control housing 7. Several support rings 18 in the rotating sleeve 9 rotate synchronously, and the rotating sleeve 9 drives the movable ring 27 to rotate relative to the control housing 7 through the fixing frame 29. The positioning grooves 28 and the positioning blocks 26 are arranged in a staggered manner. At this time, the electromagnet 31 is turned off, and the electromagnet 31 no longer exerts a magnetic force on the iron plate 30. The compression spring 33 pushes the iron plate 30 and the movable ring 27 to move, so that the movable ring 27 is in close contact with the positioning block 26. As the rotating sleeve 9 continues to rotate, when the end of the first support ring 18 rotates to one side of the groove 19, the tension spring 17 corresponding to the support ring 18 drives the opening and closing plate 15 and the gasket 22 to move, and the sealing sleeve 21 slides relative to the square pipe 20. Through the design of the sealing sleeve 21 and the sealing sleeve 21, the opening and closing plate 15 moves smoothly relative to the control housing 7, and at the same time seals the penetration part of the support column 16 and the control housing 7. At this time, the corresponding gasket 22 no longer seals the rectangular hole 14, and the end of the support ring 18 is in close contact with the inner wall of the groove 19, and the first rectangular hole 14 can be opened. At the same time, a corresponding positioning groove 28 is located on one side of the positioning block 26. At this time, the compression spring 33 pushes the iron plate 30 and the movable ring 27 to move, so that the positioning block 26 slides into the corresponding positioning groove 28. When the rotating sleeve 9 rotates again, the rotating sleeve 9 drives the control housing 7 and the water collecting pipe 6 to rotate synchronously, and the position of the cleaning area division unit changes. Since the first rectangular hole 14 is opened, when external gas enters the control housing 7, the gas enters the cleaning area division unit through the opened rectangular hole 14. Then the gas cleans the geotextile 3 through the cleaning partitions separated by the cleaning area division unit, and the position of the cleaning area division unit changes, and the entire circumference of the geotextile 3 can be cleaned. When the cleaning of one circle of the geotextile 3 corresponding to the first cleaning partition is completed, the electromagnet 31 is turned on again, and the fixed relationship between the rotating sleeve 9 and the control housing 7 is released. As the rotating sleeve 9 rotates, the end of the first support ring 18 slides out of the groove 19, and the support ring 18 drives the opening and closing plate 15 and the gasket 22 to move, and the tension spring 17 is in a stretched state.Moreover, the gasket 22 seals and closes the first rectangular hole 14 again. Meanwhile, the end of the next support ring 18 slides into the corresponding groove 19, enabling the next rectangular hole 14 to be opened. Similarly, by repeating the above steps, the gas can clean the geotextile filter cloth 3 through the next cleaning partition divided by the cleaning area division unit. Until after the last rectangular hole 14 is opened and the geotextile filter cloth 3 corresponding to each cleaning partition is cleaned by the gas, the rotating sleeve 9 rotates relative to the water collecting pipe 6 and the control housing 7 to the initial position, and the positioning block 26 is again located in the corresponding positioning groove 28. The end parts of several support columns 16 respectively abut against the inner walls of the corresponding support rings 18, and several rectangular holes 14 are all in the closed state, completing the cleaning of the geotextile filter cloth 3. Then, the inflow into the cabin can be reduced again through the geotextile filter cloth 3.

[0044] This embodiment also provides a method for filtering and draining the mud entering the cabin of a trailing suction hopper dredger, including the above-mentioned device for filtering and draining the mud entering the cabin of a trailing suction hopper dredger, and includes the following steps:

[0045] Step 1: The staff respectively fixedly installs the pressure regulating valves 2 at both ends of the pipe body 1 on the inlet pipe to the cabin through flanges. The water in the pipe body 1 is filtered through the water outlet holes on the pipe body 1 and the geotextile filter cloth 3 to between the geotextile filter cloth 3 and the water collecting pipe 6, and the water is discharged through the drain pipe 5 on one of the fixing rings 4.

[0046] Step 2: When the impurity layer accumulated on the inner wall of the geotextile filter cloth 3 needs to be cleaned, the pressure regulating valves 2 at both ends of the pipe body 1 are closed, and an external water pump injects water reversely into the water collecting pipe 6 through the drain pipe 5. The water enters the pipe body 1 through the geotextile filter cloth 3, so that the impurity layer on the geotextile filter cloth 3 is soaked in water.

[0047] Step 3: The switch valve on the exhaust pipe 10 is opened, and an external air pump is connected to the air inlet pipe 8 through a hose. The gas enters the control housing 7 through the air inlet pipe 8, and the gas is controlled to enter the cleaning area division unit through the air inlet control mechanism on the control housing 7. The gas enters the pipe body 1 through the geotextile filter cloth 3 corresponding to the cleaning area division unit.

[0048] Step 4: The impurity layer on the geotextile filter cloth 3 is cleaned by the flowing gas, and the rotation adjustment structure drives the control housing 7 and the water collecting pipe 6 to rotate, so that the cleaning area division unit on the water collecting pipe 6 moves to different positions on the geotextile filter cloth 3. Furthermore, different positions on the geotextile filter cloth 3 are cleaned by the gas, and the switch valve on the exhaust pipe 10 is in the open state. The gas entering the pipe body 1 is discharged through the exhaust pipe 10.

[0049] Step Five: When it is not necessary to clean the impurity layer on the geotextile 3, open the switch valve on the waste discharge pipe 11, and an external water pump continuously injects water into the water collecting pipe 6 through the drain pipe 5, so that the water mixed with impurities in the pipe body 1 is discharged through the waste discharge pipe 11.

[0050] Those of ordinary skill in the art should understand that the discussion of any above embodiment is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

Claims

1. A device for filtering and draining mud from a trailing suction dredger, comprising a pipe body (1), characterized in that: The two ends of the pipe body (1) are respectively fixedly connected with a pressure regulating valve (2); the outer sleeve of the pipe body (1) is provided with a geotextile filter cloth (3); the two ends of the geotextile filter cloth (3) are respectively fixedly provided with a fixing ring (4); one of the fixing rings (4) is provided with a drainage pipe (5); the pipe body (1) is provided with a plurality of water outlet holes matched with the geotextile filter cloth (3); and the outer sleeve of the geotextile filter cloth (3) is provided with a water collecting pipe (6); The two ends of the water collecting pipe (6) are rotatably connected to the two fixing rings (4), the water collecting pipe (6) is fixedly connected with a cleaning area dividing unit, the outer wall of the water collecting pipe (6) is fixedly mounted with a control shell (7), an air intake pipe (8) is arranged on the control shell (7), a one-way valve is arranged on the air intake pipe (8), an air intake control mechanism matched with the cleaning area dividing unit is installed on the control shell (7), a rotating adjustment structure matched with the control shell (7) is installed on the pipe body (1), an exhaust pipe (10) and a waste pipe (11) are respectively arranged on the pipe body (1), and switch valves are respectively arranged on the drain pipe (5), the exhaust pipe (10) and the waste pipe (11); The cleaning area division unit comprises two side plates (12) fixedly installed in the water collecting pipe (6), a plurality of partition plates (13) arranged in sequence are fixedly connected between the two side plates (12), and the partition plates (13) and the side plates (12) are respectively in contact with the geotextile filter cloth (3); The rotation adjustment structure comprises a rotation sleeve (9) sleeved on the outside of the water collecting pipe (6), the rotation sleeve (9) being equipped with a synchronization mechanism matched with the control shell (7), and the pipe body (1) being equipped with a driving member matched with the rotation sleeve (9); The synchronization mechanism comprises two movable rings (27) sleeved on the outside of the water collecting pipe (6), and the control shell (7) is located between the two movable rings (27); the rotating sleeve (9) is provided with a guide member matched with the control shell (7); positioning blocks (26) are fixedly connected to both sides of the control shell (7); the movable ring (27) is provided with a plurality of positioning grooves (28) matched with the positioning blocks (26), and the positioning blocks (26) are located in the corresponding positioning grooves (28); a plurality of fixing frames (29) are fixedly connected to the outer wall of the rotating sleeve (9); an electromagnet (31) is fixedly connected to the fixing frame (29); a plurality of iron plates (30) matched with the electromagnet (31) are fixedly connected to the movable ring (27); and an elastic member matched with the iron plate (30) is installed on the fixing frame (29); The air intake control mechanism comprises a plurality of opening and closing plates (15) arranged in the control housing (7), the number of the positioning grooves (28) being one more than the number of the opening and closing plates (15), the control housing (7) being a cavity structure with an opening at the bottom, a plurality of rectangular holes (14) matching the opening and closing plates (15) being arranged on the inner wall of the water collecting pipe (6), and the number of the rectangular holes (14) and the opening and closing plates (15) being the same, and a support column (16) being fixedly connected to the opening and closing plates (15), and the support column (16) being far away from the closing plates (15). ) penetrates the control housing (7), a plurality of support rings (18) arranged in sequence are fixedly connected in the rotating sleeve (9), and the number of the support rings (18) and the number of the support columns (16) are the same, a groove (19) matching the support column (16) is formed on the inner wall of the support ring (18), and the plurality of grooves (19) are arranged in a staggered manner, an end of the support column (16) away from the closing plate (15) contacts the inner wall of the support ring (18), and the closing plate (15) is provided with a sealing reset member matching the control housing (7).

2. The device for filtering and draining mud from a trailing suction hopper dredger according to claim 1 is characterized in that: The driving member comprises two gear rings (34) fixedly sleeved on the outside of the rotating sleeve (9), the two ends of the tube body (1) are respectively fixedly connected to motor seats (35), a servo motor (36) is fixedly mounted on the motor seat (35), and a gear (37) is fixedly connected to the output end of the servo motor (36), and the gear (37) and the gear ring (34) are meshed.

3. The device for filtering and draining mud from a trailing suction hopper dredger according to claim 1 is characterized in that: The elastic member comprises two guide posts (32) fixedly mounted on a fixing frame (29), two adjacent guide posts (32) penetrate corresponding iron plates (30), and the iron plates (30) and the fixing frame (29) are connected via a compression spring (33).

4. The device for filtering and draining mud from a trailing suction hopper dredger according to claim 1 is characterized in that: The guide member comprises at least one guide ring (23) fixedly mounted on the inner wall of the rotating sleeve (9), a guide groove (24) being provided on the inner wall of the guide ring (23), a guide strip (25) being slidably provided in the guide groove (24), and the guide strip (25) being fixedly connected to the control housing (7).

5. The device for filtering and draining mud from a trailing suction hopper dredger according to claim 1 is characterized in that: The sealing reset member comprises a sealing sleeve (21) fixedly mounted on the opening and closing plate (15), and the sealing sleeve (21) is sleeved on the outside of the support column (16), a square tube (20) is slidably arranged in the sealing sleeve (21), the top end of the square tube (20) is fixedly connected to the inner wall of the control shell (7), the opening and closing plate (15) and the inner wall of the control shell (7) are connected via a tension spring (17), and the tension spring (17) is located in the square tube (20).

6. The device for filtering and draining mud from a trailing suction hopper dredger according to claim 5, characterized in that: The opening and closing plate (15) is fixedly mounted with a sealing gasket (22), and the sealing gasket (22) is in contact with the outer wall of the water collecting pipe (6).

7. A method for filtering and draining mud from a trailing suction hopper dredger, comprising the device for filtering and draining mud from a trailing suction hopper dredger as claimed in claim 1, characterized in that: The following steps are involved: Step 1: The staff fixes the pressure regulating valves (2) located at both ends of the pipe body (1) on the cabin inlet pipe through flanges, and the water in the pipe body (1) is filtered through the water outlet holes on the pipe body (1) and the geotextile filter cloth (3) to the space between the geotextile filter cloth (3) and the water collecting pipe (6), and the water is discharged through the drainage pipe (5) on one of the fixing rings (4); Step 2: When the impurity layer accumulated on the inner wall of the geotextile filter cloth (3) needs to be cleaned, the pressure regulating valves (2) at both ends of the pipe body (1) are closed, and the external water pump injects water into the water collecting pipe (6) in the reverse direction through the drainage pipe (5), and the water enters the pipe body (1) through the geotextile filter cloth (3), so that the impurity layer on the geotextile filter cloth (3) is immersed in the water; Step 3: Open the switch valve on the exhaust pipe (10), connect the external air pump to the air intake pipe (8) through a hose, and the gas enters the control shell (7) through the air intake pipe (8). The gas is controlled by the air intake control mechanism on the control shell (7) to enter the cleaning area division unit, and the gas enters the pipe body (1) through the geotextile filter cloth (3) corresponding to the cleaning area division unit; Step 4: The impurity layer on the geotextile filter cloth (3) is cleaned by flowing gas, and the rotary adjustment structure drives the control shell (7) and the water collecting pipe (6) to rotate, so that the cleaning area division unit on the water collecting pipe (6) moves to different positions on the geotextile filter cloth (3), and then the different positions on the geotextile filter cloth (3) are cleaned by gas, and the switch valve on the exhaust pipe (10) is in an open state, and the gas entering the pipe body (1) is discharged through the exhaust pipe (10); Step 5: When it is not necessary to clean the impurity layer on the geotextile filter cloth (3), open the switch valve on the drainage pipe (11), and the external water pump continuously injects water into the water collecting pipe (6) through the drainage pipe (5), so that the water mixed with impurities in the pipe body (1) is discharged through the drainage pipe (11).

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