Method for filtering and draining mud entering cabin of trailing suction dredger and implementation device thereof

Abstract

The invention relates to the technical field of separation, in particular to a drag suction dredger cabin entering mud filtering and draining method and an implementation device thereof.The drag suction dredger cabin entering mud filtering and draining device comprises a pipe body, the two ends of the pipe body are fixedly connected with pressure adjusting valves respectively, the pipe body is fixedly sleeved with geotechnical filter cloth, and the two ends of the geotechnical filter cloth are fixedly sleeved with fixing rings respectively; a drainage pipe is arranged on one fixing ring, a plurality of water outlet holes matched with the geotechnical filter cloth are formed in the pipe body, and the geotechnical filter cloth is sleeved with a water collecting pipe; the two ends of the water collecting pipe are rotationally connected with the two fixing rings correspondingly, a cleaning area dividing unit is fixedly connected into the water collecting pipe, and a control shell is fixedly installed on the outer wall of the water collecting pipe. The pipe body can be detached without cooperation of hoisting equipment, the geotechnical filter cloth can be directly cleaned, an impurity layer on the geotechnical filter cloth is discharged through the impurity discharging pipe, and the later maintenance efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of separation technology, and in particular to a method for filtering and draining mud entering a cabin of a trailing suction dredger and an implementation device thereof. Background Art

[0002] A trailing suction hopper dredger is a vessel that can dredge and load and unload mud in rivers, lakes and oceans. Filtration separation is another solid-liquid separation technology that uses filter media to separate solid-liquid mixtures. It can be used in the loading process of a trailing suction hopper dredger. The filter material is used to separate and discharge the mud in the tank, thereby increasing the effective loading capacity of the mud tank.

[0003] Through searching the prior art, it was found that the Chinese patent with the announcement number CN116078017A discloses a method for filtering and draining the mud entering the cabin of a trailing suction dredger and its implementation device, which reduces the pipeline transportation flow rate and improves the transportation concentration through filtering and draining.

[0004] But it is worth thinking about that although filtration and drainage can be achieved through geotextile filter cloth, as the use time increases, an impurity layer is likely to form on the inner surface of the geotextile filter cloth, and the impurity layer affects the efficiency of filtration and drainage. In the later stage, the staff needs to regularly use the cooperation of lifting equipment to dismantle the filter pipe, which affects the efficiency of later maintenance and has certain limitations.

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

[0006] In view of this, the purpose of the present invention is to propose a method for filtering and draining mud entering a cabin of a bucket suction dredger and an implementation device thereof, so as to solve the problem that an impurity layer is easily formed on the inner surface of the above-mentioned geotextile filter cloth, and the impurity layer affects the efficiency of filtering and drainage, and the staff need to dismantle the filter pipe at a later stage.

[0007] Based on the above purpose, the present invention provides a device for filtering and draining mud in a dredger, comprising a pipe body, pressure regulating valves are fixedly connected to the two ends of the pipe body, a geofilter cloth is fixedly sleeved on the outside of the pipe body, and a fixing ring is fixedly sleeved on the two ends of the geofilter cloth, a drainage pipe is provided on one of the fixing rings, a plurality of water outlet holes adapted to the geofilter cloth are opened on the pipe body, and a water collecting pipe is provided on the outside of the geofilter cloth;

[0008] The two ends of the water collecting pipe are rotatably connected to two fixed 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 intake pipe is provided on the control shell, a one-way valve is provided on the air intake pipe, an air intake control mechanism matched with the cleaning area dividing unit is installed on the control shell, a rotating adjustment structure matched with the control shell is installed on the pipe body, an exhaust pipe and a drainage pipe are respectively provided on the pipe body, and switch valves are respectively provided on the drainage pipe, the exhaust pipe and the drainage pipe.

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

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

[0011] Optionally, the driving member includes two gear rings fixedly mounted on the outside of the rotating sleeve, the two ends of the tube body are respectively fixedly connected to a motor seat, a servo motor is fixedly installed on the motor seat, a gear is fixedly connected to the output end of the servo motor, and the gear and the gear ring are meshed.

[0012] Optionally, the synchronization mechanism includes two movable rings sleeved on the outside of the water collecting pipe, and the control shell is located between the two movable rings, the rotating sleeve is equipped with a guide member compatible with the control shell, and positioning blocks are fixedly connected to both sides of the control shell, and the movable ring is provided with a plurality of positioning grooves compatible with the positioning blocks, and the positioning blocks are located in the corresponding positioning grooves, a plurality of fixing frames are fixedly connected to the outer wall of the rotating sleeve, an electromagnet is fixedly connected to the fixing frame, a plurality of iron plates compatible with the electromagnet are fixedly connected to the movable ring, and the fixing frame is equipped with an elastic member compatible with the iron plate.

[0013] Optionally, the elastic member includes two guide posts fixedly mounted on a fixing frame, two adjacent guide posts penetrate corresponding iron plates, and the iron plate and the fixing frame are connected via a compression spring.

[0014] Optionally, the guide member includes at least one guide ring fixedly mounted on the inner wall of the rotating sleeve, a guide groove is provided on the inner wall of the guide ring, a guide bar is slidably provided in the guide groove, and the guide bar is fixedly connected to the control shell.

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

[0016] Step 1: The staff will fix the pressure regulating valves at both ends of the pipe body on the cabin inlet pipe through flanges. The water in the pipe body will be filtered through the water outlet holes and geotextile filter cloth on the pipe body to the space between the geotextile filter cloth and the water collecting pipe, and then discharged through the drainage pipe on one of the fixed 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, and the external water pump injects water into the water collecting pipe through the drainage pipe in the reverse direction. The water enters the pipe body through the geotextile filter cloth, so that the impurity layer on the geotextile filter cloth is immersed in the water;

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

[0019] Step 4: The impurity layer on the geotextile filter cloth is cleaned by flowing gas, and the rotary adjustment structure drives the control shell and the water collecting pipe to rotate, so that the cleaning area division unit on the water collecting pipe moves to different positions on the geotextile filter cloth, and then the different positions on the geotextile filter cloth are cleaned by 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;

[0020] Step 5: When there is no need to clean the impurity layer on the geotextile filter cloth, open the switch valve on the drainage pipe, and the external water pump continuously injects water into the water collecting pipe through the drainage pipe, so that the water mixed with impurities in the pipe body can be discharged through the drainage pipe.

[0021] The beneficial effects of the present invention are as follows: 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 the external water pump injects water into the water collecting pipe through the drainage pipe in the reverse direction, and the water enters the pipe body through the geotextile filter cloth, so that the impurity layer on the geotextile filter cloth is immersed in the water, and the switch valve on the exhaust pipe is opened, and the external air pump is connected to the air intake pipe through a hose, and the gas enters the control shell through the air intake pipe, and the gas is controlled to enter the cleaning area division unit through the air intake control mechanism on the control shell, and 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, and the rotary adjustment structure drives The control shell and the water collecting pipe rotate so that the cleaning area division unit on the water collecting pipe moves to different positions on the geofilter cloth, and then the different positions on the geofilter cloth are cleaned by 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 there is no need to clean the impurity layer on the geofilter cloth, the switch valve on the drainage pipe is opened, and the external water pump continuously injects water into the water collecting pipe through the drainage pipe, so that the water mixed with impurities in the pipe body is discharged through the drainage pipe. There is no need to disassemble the pipe body with the cooperation of lifting equipment, and the geofilter cloth can be directly cleaned, and the impurity layer on the geofilter cloth can be discharged through the drainage pipe, thereby 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is one of the overall structural diagrams of an embodiment of the present invention;

[0024] Figure 2 This is the second schematic diagram of the overall structure of an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure inside the rotating sleeve of an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the exterior of a water collecting pipe according to an embodiment of the present invention;

[0027] Figure 5 This is one of the structural schematic diagrams of the control shell of an embodiment of the present invention;

[0028] Figure 6 This is the second structural schematic diagram of the control housing according to the embodiment of the present invention;

[0029] Figure 7This is a schematic diagram of the structure of a sealing reset member according to an embodiment of the present invention;

[0030] Figure 8 This is a second structural schematic diagram of the sealing reset member according to an embodiment of the present invention;

[0031] Fig. 9 This is a schematic diagram of the structure inside the water collecting pipe according to an embodiment of the present invention;

[0032] Fig.10 This is a schematic diagram of the structure of a geofilter cloth and a pipe body according to an embodiment of the present invention;

[0033] Fig.11 This is a schematic diagram of the structure of the movable ring of an embodiment of the present invention;

[0034] Fig.12 It is a schematic structural diagram of a fixing frame according to an 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. Collecting pipe; 7. Control shell; 8. Inlet pipe; 9. Rotating sleeve; 10. Exhaust pipe; 11. Drain pipe; 12. Side plate; 13. Partition plate; 14. Rectangular hole; 15. Opening and closing plate; 16. Support column; 17. Tension spring; 18. Support ring; 19. Groove; 20. Square tube; 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. ​​Fixed frame; 30. Iron plate; 31. Electromagnet; 32. Guide column; 33. Compression spring; 34. Gear ring; 35. Motor seat; 36. Servo motor; 37. Gear. DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0038] Embodiment 1, by Figure 1 , Figure 2 , Figure 4 , Figure 5 and Fig.10 The present invention comprises a pipe body 1, 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 fixedly provided with a geotextile filter cloth 3, 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, a plurality of water outlet holes adapted to the geotextile filter cloth 3 are opened on the pipe body 1, and the outer sleeve of the geotextile filter cloth 3 is provided with a water collecting pipe 6;

[0039] The two ends of the water collecting pipe 6 are rotatably connected to the two fixing rings 4 respectively, a cleaning area division 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 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 adapted to the cleaning area division unit is installed on the control shell 7, a rotating adjustment structure adapted to the control shell 7 is installed on the pipe body 1, an exhaust pipe 10 and a drainage pipe 11 are respectively arranged on the pipe body 1, and the drainage pipe 5, the exhaust pipe 10 and the drainage pipe 11 are 1 is respectively provided with a switch valve; 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 through the drainage pipe 5 in the reverse direction, 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, and the switch valve on the exhaust pipe 10 is opened, and the external air pump is connected to the intake pipe 8 through a hose, and the gas enters the control shell 7 through the intake pipe 8, and the intake control on the control shell 7 is controlled. The mechanism controls the gas 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, and the impurity layer on the geotextile filter cloth 3 is cleaned by the 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 the 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. When it is not necessary to clean the impurity layer on the geotextile filter cloth 3, the switch valve on the drainage pipe 11 is opened, and the external water pump continuously injects water into the drainage 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. There is no need to cooperate with the lifting equipment to disassemble the pipe body 1, and the geotextile filter cloth 3 can be directly cleaned, and the impurity layer on the geotextile filter cloth 3 is discharged through the drainage pipe 11, thereby improving the efficiency of later maintenance.

[0040] Embodiment 2, based on embodiment 1, Figure 1 , Figure 2 , Figure 3 , Figure 6 , Fig. 9 , Fig.11 and Fig.12It is given that the cleaning area division unit includes two side plates 12 fixedly installed in the water collecting pipe 6, a plurality of partitions 13 arranged in sequence are fixedly connected between the two side plates 12, and the partitions 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 on the outside of the water collecting pipe 6, the rotating sleeve 9 is equipped with a synchronization mechanism compatible with the control shell 7, the pipe body 1 is equipped with a driving member compatible with the rotating sleeve 9, the driving member includes two gear rings 34 fixedly sleeved on the outside of the rotating sleeve 9, the two ends of the pipe body 1 are respectively fixedly connected with a motor seat 35, the motor seat 35 is fixedly installed with a servo motor 36, the output end of the servo motor 36 is fixedly connected with a gear 37, and the gear 37 and the gear ring 34 are meshed, the synchronization mechanism includes 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 equipped with a guide member compatible with the control shell 7, the control Positioning blocks 26 are fixedly connected to both sides of the shell 7, and a plurality of positioning grooves 28 matching the positioning blocks 26 are provided on the movable ring 27, 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, and an electromagnet 31 is fixedly connected to the fixing frame 29. A plurality of iron plates 30 matching the electromagnet 31 are fixedly connected to the movable ring 27, and an elastic member matching the iron plate 30 is installed on the fixing frame 29, and the elastic member includes two guide columns 32 fixedly installed on the fixing frame 29, and two adjacent guide columns 32 penetrate the corresponding iron plate 30, and the iron plate 30 and the fixing frame 29 are connected by a compression spring 33. The guide member includes at least one guide ring 23 fixedly installed on the inner wall of the rotating sleeve 9, and a guide groove 24 is provided on the inner wall of the guide ring 23, and a guide strip 25 is slidably provided in the guide groove 24, and the guide strip 25 is fixedly connected to the control shell 7;

[0041] The geotextile filter cloth 3 is divided into several cleaning partitions by the cooperation of the side plates 12 and the partitions 13. When the gas enters between the side plates 12 and the partitions 13, the geotextile filter cloth 3 corresponding to the cleaning partitions can be cleaned. The gear 37 is driven to rotate by the servo motor 36. The gear 37 drives the rotating sleeve 9 to rotate through the gear ring 34, and the rotating sleeve 9 drives the guide ring 23 to rotate relative to the control shell 7. The guide bar 25 slides in the guide groove 24. The guide ring 23, the guide groove 24 and the guide bar 25 are designed to make the rotating sleeve 9 rotate 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 frame 29, the movable ring 27 and the positioning block 26. The water collecting pipe 6 can drive the side plates 12 and the partitions 13 to rotate relative to the geotextile filter cloth 3, change the position where the geotextile filter cloth 3 is cleaned, and achieve the purpose of cleaning different positions on the geotextile filter cloth 3. There is no need to dismantle the pipe body 1, which is convenient for later maintenance.

[0042] Embodiment 3, based on embodiment 2, Figure 3 , Figure 4, Figure 5 , Figure 7 and Figure 8 It is given that the air intake control mechanism includes a plurality of opening and closing plates 15 arranged in the control shell 7, the number of positioning grooves 28 is one more than the number of opening and closing plates 15, the control shell 7 is a cavity structure with an opening at the bottom, a plurality of rectangular holes 14 adapted to the opening and closing plates 15 are opened on the inner wall of the water collecting pipe 6, and the number of rectangular holes 14 and the number of opening and closing plates 15 are consistent, a support column 16 is fixedly connected to the opening and closing plate 15, and one end of the support column 16 away from the closing plate 15 passes through the control shell 7, a plurality of support rings 18 arranged in sequence are fixedly connected in the rotating sleeve 9, and the number of support rings 18 and the number of support columns 16 are consistent, and a plurality of rectangular holes 14 adapted to the opening and closing plates 15 are opened on the inner wall of the water collecting pipe 6, and the number of rectangular holes 14 and the number of opening and closing plates 15 are consistent, and a support column 16 adapted to the support column 16 is opened on the inner wall of the support ring 18. The groove 19 is provided, and several grooves 19 are arranged in a staggered manner. One end of the support column 16 away from the closing plate 15 contacts the inner wall of the support ring 18. The opening and closing plate 15 is provided with a sealing reset member adapted to the control shell 7. The sealing reset member includes a sealing sleeve 21 fixedly installed 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 provided in the sealing sleeve 21. The top of the square tube 20 is fixedly connected to the inner wall of the control shell 7. The opening and closing plate 15 is connected to the inner wall of the control shell 7 through a tension spring 17, and the tension spring 17 is located in the square tube 20. The opening and closing plate 15 is fixedly provided with a sealing gasket 22, and the sealing gasket 22 contacts the outer wall of the water collecting pipe 6.

[0043] The initial state of the tension spring 17 is in a tension state, and the tension spring 17 applies a pulling force to the opening and closing plate 15 so that the end of the support column 16 and the inner wall of the support ring 18 are in close contact, and the sealing gasket 22 is in contact with the outer wall of the water collecting pipe 6, and the sealing gasket 22 seals the rectangular hole 14. 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, and the electromagnet 31 applies a magnetic force to 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 is disengaged from the corresponding positioning groove 28, and the iron plate 30 slides relative to the guide column 32, and 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 shell 7 is released, and the gear 37 is driven to rotate by the servo motor 36, so that the rotating sleeve 9 can rotate relative to the control shell 7, and the 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 shell 7 through the fixed frame 29. The positioning grooves 28 and the positioning blocks 26 are arranged alternately. At this time, the electromagnet 31 is turned off, and the electromagnet 31 no longer applies magnetic force to 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 sealing gasket 2 2 moves, and the sealing sleeve 21 slides relative to the square tube 20. Through the design of the sealing sleeve 21 and the sealing sleeve 21, the opening and closing plate 15 can move smoothly relative to the control shell 7, and the penetration of the support column 16 and the control shell 7 is sealed. At this time, the corresponding sealing 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, so that 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 shell 7 and the water collecting pipe 6 to rotate synchronously, and the position of the cleaning area division unit is changed. Change, because the first rectangular hole 14 is opened, when external gas enters the control shell 7, the gas enters the cleaning area division unit through the opened rectangular hole 14, and then the gas cleans the geotextile filter cloth 3 through the cleaning partition separated by the cleaning area division unit, and the position of the cleaning area division unit changes, so that a circle of the geotextile filter cloth 3 can be cleaned. When a circle of the geotextile filter cloth 3 corresponding to the first cleaning partition is cleaned, the electromagnet 31 is turned on again to release the fixed relationship between the rotating sleeve 9 and the control shell 7. 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 sealing gasket 22 to move, and the tension spring 17 is in a stretched state.The sealing pad 22 seals and closes the first rectangular hole 14 again, and the end of the next support ring 18 slides into the corresponding groove 19, so that the next rectangular hole 14 can be opened. Similarly, the above steps are repeated, and the gas can clean the geotextile filter cloth 3 through the next cleaning partition separated by the cleaning area division unit until the last rectangular hole 14 is opened. When the geotextile filter cloth 3 corresponding to each cleaning partition is cleaned by the gas, the rotating sleeve 9 rotates to the initial position relative to the water collecting pipe 6 and the control shell 7, and the positioning block 26 is located in the corresponding positioning groove 28 again. The ends of several support columns 16 are respectively abutted against the inner walls of the corresponding support rings 18, and several rectangular holes 14 are in a closed state. The cleaning of the geotextile filter cloth 3 is completed, and the flow rate into the cabin can be reduced again through the geotextile filter cloth 3.

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

[0045] Step 1: The staff fixes the pressure regulating valves 2 at both ends of the pipe body 1 on the cabin inlet pipe 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 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;

[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 the external water pump injects water into the water collecting pipe 6 through the drainage pipe 5 in the reverse direction, 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;

[0047] 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 to enter the cleaning area division unit by the air intake control mechanism on the control shell 7, and 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 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;

[0049] Step 5: When there is no need 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 continues to inject 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.

[0050] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative 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 may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

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).

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 synchronization mechanism comprises two movable rings (27) sleeved on the outside of the water collecting pipe (6), and the control housing (7) is located between the two movable rings (27); the rotating sleeve (9) is provided with a guide member matched with the control housing (7); positioning blocks (26) are fixedly connected to both sides of the control housing (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).

4. The device for filtering and draining mud from a trailing suction hopper dredger according to claim 3 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).

5. The device for filtering and draining mud from a trailing suction hopper dredger according to claim 3 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).

6. The device for filtering and draining mud from a trailing suction hopper dredger according to claim 3 is characterized in that: 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).

7. The device for filtering and draining mud from a trailing suction hopper dredger according to claim 6 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).

8. The device for filtering and draining mud from a trailing suction hopper dredger according to claim 7, 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).

9. 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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