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

Abstract

The invention discloses a method for filtering and draining mud entering a cabin of a drag suction dredger and an implementation device of the method, and relates to the field of dredgers. The drainage method comprises the steps that firstly, the drag suction dredger is moved to a water area needing to be dredged, then a drag suction system is started, a drag suction head goes deep into the water bottom, and then the mud is conveyed into a filtering and draining device through a mud conveying system; the filtering and draining device is used for primarily filtering the sucked slurry, the filtered water is re-drained to the outside from the filtering and draining mechanism, the slurry left in the filtering and draining mechanism continues to move along the conveying system, and then the slurry is moved into a mud cabin on a ship, so that slurry formed by mixing the water and trace fine-particle silt can be drained; the thickness of the slurry is improved, the mud cabin on the trailing suction dredger can load more slurry, the time required by overflow and the amount of the overflowed water are reduced, and the construction time is shortened.

Description

Technical Field

[0001] The present application relates to the field of dredgers, 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 dredger is a device specially used for water-based earth and rock excavation and dredging. It integrates the functions of excavation, transportation and unloading, and is widely used in the maintenance and development of ports, waterways, lakes and rivers. It sucks mud through a trailing suction system placed on both sides or at the stern of the hull, and works in a way of sucking mud while sailing. It uses the rake head at the front end of the mud suction pipe installed on the side, stern or in the ship to loosen the soil, and then uses a mud pump to suck the mud at the rake head into the conveying system, and then the conveying system discharges it into the mud tank.

[0003] The drag head cuts the soil and liquefies it to form a mud-water mixture which is discharged into the mud tank of the drag suction dredger. The draft of the ship increases with the increase of the loading amount in the mud tank. When the draft of the dredger reaches the maximum allowable value, the height of the overflow tube is lowered to discharge the low-density mud-water mixture in the upper layer of the mud tank out of the tank, thereby reducing the loading amount of the dredger and enabling the dredger to continue operating under the maximum draft condition.

[0004] When the ship's discharge volume reaches the maximum, in order to increase the sediment loading capacity in the ship, it is necessary to use an overflow bucket to operate while continuing to transport the mud into the ship. During the transportation process, not only the suction operation time is extended, but long-term overflow may also pollute the operating waters on a large scale. Summary of the invention

[0005] The purpose of the present application is to solve the problem proposed in the above-mentioned background technology that in order to increase the sediment loading capacity in the ship, it is necessary to use an overflow bucket for operation while continuing to transport the mud into the ship. During the transportation process, not only the suction operation time is prolonged, but long-term overflow may also pollute the operating waters on a large scale. The present application provides a method for filtering and draining mud entering the cabin of a suction dredger and an implementation device thereof.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions: A method for filtering and draining mud in a dredger and an implementation device thereof, wherein the drainage method comprises: S1: firstly moving the dredger to a water area to be dredged, and then starting the dredger system to move the dredger head deep into the water bottom; S2: The mud is then sent to the filtering and draining device through the mud conveying system, and the filtering and draining device performs a primary filtration on the sucked mud, and the filtered water is discharged from the filtering and draining mechanism to the outside again; S3: The mud left in the filter drainage mechanism continues to move along the conveying system, and then the mud moves to the mud tank on the ship; S4: After the mud-water mixture fills the mud tank, dredging continues, so that coarse soil particles will settle at the bottom of the mud tank, and low-concentration mud will float on the upper layer and then flow out of the mud tank through the overflow tube; S5: After loading, the dredged soil in the mud tank is transported to the designated dumping area and dumped through the mud door at the bottom of the ship. Alternatively, the mud can be connected to the water pipeline or the land shore pipeline through the mud discharge pipe to blow the mud to the designated area or directly blow it ashore.

[0007] By adopting the above technical solution, a slurry mixed with water and trace fine particles of mud can be discharged, the viscosity of the mud can be improved, the mud tank on the suction dredger can be loaded with more mud, the time required for overflow and the amount of overflow water can be reduced, and the construction time can be shortened.

[0008] Furthermore, the filtering and drainage device includes a drainage cabin, an inlet pipe is fixed at one end of the drainage cabin, an outlet pipe 1 is fixed at the end of the drainage cabin away from the inlet pipe, an outlet pipe 2 is fixed on the drainage cabin, a filtering mechanism is arranged in the drainage cabin, a sedimentation reducing mechanism is arranged in the drainage cabin, a valve 1 is fixed on the outlet pipe 1, and a valve 2 is installed on the outlet pipe 2.

[0009] By adopting the above technical scheme, the mud is filled in the drainage tank, and the filtering mechanism in the drainage tank is used to filter the mud in the drainage tank, so that the upper layer of the filtering mechanism becomes a mixture of water and fine sediment, and the lower layer of the filtering mechanism becomes the mud that needs to be transported to the trailing suction hopper dredger, and then the outlet pipe 1 and the outlet pipe 2 are opened at the same time, and the water inlet pipe is kept to continue to transport mud to the drainage tank. The sum of the flow rates in the outlet pipe 1 and the outlet pipe 2 is the same as the flow rate of the water inlet pipe, so that the drainage tank is always kept full, thereby increasing the concentration of mud that can enter the trailing suction hopper dredger and reducing the time required for overflow operation and the amount of overflow water.

[0010] Furthermore, the filtering mechanism includes a support frame fixed in the drainage compartment, a filter net is fixed on the support frame, a shaking assembly is arranged between the drainage compartment and the filter net, and a water level detector is fixed in the drainage compartment.

[0011] By adopting the above technical solution, the liquid level of the mud in the drainage tank rises slowly, and then the mud contacts the filter screen on the support frame, and the water and fine sediment in the mud pass through the filter screen. When the water level detector detects that the water in the drainage tank is full, valve one and valve two are opened to allow the mud to pass through the outlet pipe one and then enter the bucket suction dredger. The water and fine sediment on the filter screen are discharged from the outlet pipe two under the action of the external water pump, thereby improving the viscosity of the mud and improving the efficiency of the bucket suction dredger in loading sediment.

[0012] Furthermore, the shaking assembly includes a reciprocating disk arranged on a supporting frame, a reciprocating rod 1 is arranged on the reciprocating disk, one end of the reciprocating rod 1 is eccentrically connected to the reciprocating disk, the end of the reciprocating rod 1 away from the reciprocating disk is rotationally connected to a reciprocating rod 2, the end of the reciprocating rod 2 away from the reciprocating rod 1 is fixedly connected to the filter screen, a sliding connection limit rod is sleeved on the reciprocating rod 2, and a driving member is arranged between the reciprocating disk and the drainage compartment.

[0013] By adopting the above technical solution, the reciprocating disk drives the reciprocating rod one when it rotates, and the reciprocating rod one drives the reciprocating rod two. The reciprocating rod two moves back and forth under the restriction of the limit rod. During the movement of the reciprocating rod two, the reciprocating rod two drives the filter net to swing back and forth, so that the filter net can collide with the mud of the fluid when it moves, and the mud and sand attached to the filter net can fall off, thereby reducing the possibility of mud and sand clogging the filter net.

[0014] Furthermore, the driving member includes a support rod fixed on the support frame, the support rod is rotatably connected to a rotating shaft, one end of the rotating shaft is fixedly connected to the reciprocating disk, a driving motor is fixed on the drainage compartment, and the output end of the driving motor passes through the drainage compartment and the support rod, and is fixedly connected to the rotating shaft.

[0015] By adopting the above technical solution, the output end of the driving motor is used to drive the rotating shaft, and the rotating shaft is rotated on the support rod, so that the reciprocating disk can be supported conveniently and the reciprocating disk can be rotated at the same time.

[0016] Furthermore, the settlement reducing mechanism includes two moving rods symmetrically arranged in the drainage compartment, a plurality of evenly distributed interference rods are fixed between the two moving rods, the interference rods are in contact with the bottom of the drainage compartment, a support plate is fixed between the two moving rods, and a moving component is arranged between the support plate and the reciprocating disk.

[0017] By adopting the above technical solution, when the reciprocating disk rotates, the reciprocating disk drives the moving assembly, and the moving assembly drives the support plate to move back and forth. The two ends of the support plate drive the two moving rods to move at the bottom of the drainage compartment at the same time. During the movement of the moving rod, the resistance rod drives the resistance rod, and the resistance rod moves back and forth at the bottom of the drainage compartment with the moving rod, so that the sediment settled at the bottom of the drainage compartment can be mixed with the mud again, reducing the possibility of sediment settling and accumulating in the drainage compartment, affecting the flow of thick mud.

[0018] Furthermore, the moving component includes a connecting block fixed on the support plate, a vertical slide groove is opened on the connecting block, a connecting rod is arranged on the connecting block, one end of the connecting rod is located in the vertical slide groove and is slidingly connected to the connecting block, and one end of the connecting rod away from the connecting block is eccentrically connected to the rotating disk.

[0019] By adopting the above technical solution, the reciprocating disk drives the connecting rod, allowing the connecting rod to move vertically and left and right under the restriction of the limiter, allowing one end of the connecting rod to slide in the vertical slide groove of the connecting block. During the movement of the connecting rod, the connecting rod drives the support plate to move horizontally left and right, thereby facilitating the support plate to drive the resistance rod to move back and forth at the bottom of the drainage compartment.

[0020] Furthermore, a limiting block is fixed on the connecting block, and the connecting rod passes through the limiting block and is slidably connected to the limiting block.

[0021] By adopting the above technical solution, when the rotating disk drives the connecting rod, the limit block restricts the connecting rod, allowing the connecting rod to move vertically, so that the connecting rod and the connecting block can remain perpendicular.

[0022] In summary, the present application includes at least one of the following beneficial effects: 1. The present application, by passing the mud through the conveying system, the mud is sent to the water inlet pipe, and then enters the drainage tank from the water inlet pipe, the water inlet pipe is connected with the conveying system of the trailing suction dredger, the mud conveyed by the conveying system is sent to the drainage tank, firstly, valves 1 and 2 are used to close the water outlet pipes 1 and 2, so that the mud fills the drainage tank, and when the mud is injected into the drainage tank, valves 1 and 2 are closed, the liquid level of the mud in the drainage tank rises slowly, and then the mud contacts the filter screen on the support frame, and the water and fine sediment in the mud pass through the filter screen. When the water level detector detects When the water in the drainage tank is full, open valve one and valve two to let the mud pass through outlet pipe one and then enter the bucket suction dredger. The water and fine sediment on the filter net are discharged from outlet pipe two under the action of the external water pump. At the same time, the shaking component drives the filter net to shake back and forth, so that the sediment attached to the filter net is re-mixed in the mud, so as to achieve the purpose of being able to discharge the slurry mixed with water and trace fine particles of sediment, improve the viscosity of the mud, allow the mud tank on the bucket suction dredger to load more mud, reduce the time required for overflow and the amount of overflow water, and shorten the construction time.

[0023] 2. In the present application, a driving member is utilized to drive the reciprocating disk to rotate. When the reciprocating disk rotates, it drives reciprocating rod one, and reciprocating rod one drives reciprocating rod two. Reciprocating rod two moves back and forth under the restriction of a limiting rod. During the movement of reciprocating rod two, reciprocating rod two drives the filter screen to swing back and forth, thereby achieving the purpose of facilitating the filter screen to swing back and forth and reducing the possibility of mud and sand clogging the filter screen.

[0024] 3. In the present application, the reciprocating disk drives the connecting rod while the reciprocating disk rotates, so that the connecting rod moves vertically and left and right under the restriction of the limit piece, and one end of the connecting rod slides in the vertical slide groove of the connecting block. During the movement of the connecting rod, the connecting rod drives the support plate to move left and right, and the support plate drives the moving rod and the resistance rod to move. When the resistance rod moves, it pushes the mud at the bottom of the drainage tank back and forth, and the mud drives the sediment settled at the bottom of the drainage tank when it flows, so that the sediment settled is mixed with the mud again, and then flows out of the drainage tank together with the flow of the mud, thereby achieving the purpose of allowing the sediment settled at the bottom of the drainage tank to be mixed with the mud again, reducing the sediment settling and accumulation of sediment in the drainage tank, and affecting the flow of thick mud. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a first three-dimensional structural schematic diagram of the mud filtration and drainage method and its implementation device in the present application; Figure 2 It is a first internal structure schematic diagram of the mud filtration and drainage method and its implementation device in the present application; Figure 3 It is a second internal structure schematic diagram of the mud filtration and drainage method and its implementation device in the present application; Figure 4 This application Figure 3 The enlarged schematic diagram at A in the middle; Figure 5 This application Figure 2 Enlarged schematic diagram of point B in the middle.

[0026] Description of reference numerals: 1. Drainage compartment; 2. Water inlet pipe; 3. Water outlet pipe 1; 4. Water outlet pipe 2; 5. Filter mechanism; 51. Support frame; 52. Filter screen; 53. Shaking assembly; 531. Reciprocating disk; 532. Reciprocating rod 1; 533. Reciprocating rod 2; 534. Limit rod; 535. Driving member; 5351. Support rod; 5352. Rotating shaft; 5353. Driving motor; 54. Water level detector; 6. Sedimentation reduction mechanism; 61. Moving rod; 62. Resistance rod; 63. Moving assembly; 631. Connecting rod; 632. Connecting block; 633. Vertical slide; 634. Limit block; 64. Support plate; 7. Valve 1; 8. Valve 2. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 —5 Further details of this application are provided.

[0028] The embodiment of the present application discloses a method for filtering and draining mud entering a cabin of a trailing suction dredger and an implementation device thereof.

[0029] A method for filtering and draining mud in a dredger and an implementation device thereof, wherein the drainage method comprises: S1: firstly moving the dredger to a water area to be dredged, and then starting the dredger system to move the dredger head deep into the water bottom; S2: The mud is then sent to the filtering and draining device through the mud conveying system, and the filtering and draining device performs a primary filtration on the sucked mud, and the filtered water is discharged from the filtering and draining mechanism to the outside again; S3: The mud left in the filter drainage mechanism continues to move along the conveying system, and then the mud moves to the mud tank on the ship; S4: After the mud-water mixture fills the mud tank, dredging continues, so that coarse soil particles will settle at the bottom of the mud tank, and low-concentration mud will float on the upper layer and then flow out of the mud tank through the overflow tube; S5: After loading, the dredged soil in the mud tank is transported to the designated dumping area and dumped through the mud door at the bottom of the ship. Alternatively, the mud can be connected to the water pipeline or the land shore pipeline through the mud discharge pipe to blow the mud to the designated area or directly blow it ashore.

[0030] Move the trailing suction dredger to the working water area, and then use the trailing suction system to transport the mud to the filtering and drainage device through the conveying system. The filtering and drainage device first filters the water in the mud, and then discharges the filtered water again. The remaining mud enters the mud tank of the trailing suction dredger under the drive of the conveying system. After the water mixture fills the mud tank, dredging continues, so that coarse particles of soil will settle at the bottom of the mud tank, and low-concentration mud will float on the upper layer, and then flow out of the mud tank through the overflow tube. The mud is pumped up by the trailing suction head, and then sent to the mud tank by the conveying system. The mud is first allowed to enter the filtering and drainage device, and the water in the mud is initially filtered by the filtering and drainage device, so that the slurry mixed with water and trace fine particles of sediment can be discharged, the viscosity of the mud can be increased, and the mud tank on the trailing suction dredger can be loaded with more mud, the time required for overflow can be reduced, and the construction time can be shortened.

[0031] Reference Figure 1 , Figure 2 and Figure 3 The filtering and drainage device includes a drainage cabin 1, an inlet pipe 2 is fixed at one end of the drainage cabin 1, an outlet pipe 3 is fixed at the end of the drainage cabin 1 away from the inlet pipe 2, an outlet pipe 4 is fixed on the drainage cabin 1, a filtering mechanism 5 is arranged in the drainage cabin 1, a sedimentation reducing mechanism 6 is arranged in the drainage cabin 1, a valve 7 is fixed on the outlet pipe 3, and a valve 8 is installed on the outlet pipe 4.

[0032] The water inlet pipe 2 is connected to the conveying system of the trailing suction dredger, and the mud conveyed by the conveying system is sent to the drainage tank 1. First, valve 1 7 and valve 2 8 close the water outlet pipe 1 3 and the water outlet pipe 2 4 to allow the mud to fill the drainage tank 1, and the filter mechanism 5 in the drainage tank 1 filters the mud in the drainage tank 1, so that the upper layer of the filter mechanism 5 becomes a mixture of water and fine sediment, and the lower layer of the filter mechanism 5 becomes the mud that needs to be conveyed to the trailing suction dredger, and then the water outlet pipe 1 3 and the water outlet pipe 2 4 are opened at the same time, and the water inlet pipe 2 is kept to continue to convey mud to the drainage tank 1, and the flow rates in the water outlet pipe 1 3 and the water outlet pipe 2 4 are added to the inlet water. The flow rate of pipe 2 is the same, so that the drainage tank 1 is always kept full, and the outlet pipe 1 3 transports the filtered mud to the mud tank of the trailing suction hopper dredger, and the outlet pipe 2 4 discharges the filtered water and fine silt, while reducing the back and forth movement of the sedimentation mechanism at the bottom of the drainage tank 1, so that the silt settled at the bottom of the drainage tank 1 can be stirred and floated, and the silt can enter the trailing suction hopper dredger with the flow of mud. By sending the mud into the drainage tank 1 and then using the filtering mechanism 5 to stratify the mud in the drainage tank 1, the concentration of the mud that can enter the trailing suction hopper dredger can be increased, and the time required for overflow operation can be reduced.

[0033] Reference Figure 2 , Figure 3 and Figure 4 The filtering mechanism 5 includes a supporting frame 51 fixed in the drainage compartment 1, a filter screen 52 is fixed on the supporting frame 51, a shaking assembly 53 is arranged between the drainage compartment 1 and the filter screen 52, and a water level detector 54 is fixed in the drainage compartment 1.

[0034] When injecting mud into the drainage tank 1, close valve 1 7 and valve 2 8, the liquid level of the mud in the drainage tank 1 rises slowly, and then the mud contacts the filter screen 52 on the support frame 51, and the water and fine sediment in the mud pass through the filter screen 52. When the water level detector 54 detects that the water in the drainage tank 1 is full, open valve 1 7 and valve 2 8 to allow the mud to pass through the outlet pipe 1 3 and then enter the bucket dredger. The water and fine sediment on the filter screen 52 are discharged from the outlet pipe 2 4 under the action of the external water pump, and at the same time, the shaking component 53 is moved in the drainage tank 1. The shaking component 53 shakes the filter screen 52 on the support frame 51 to reduce the possibility of sediment blocking the filter screen 52 during the process of filtering the sediment by the filter screen 52. By using the filter screen 52 on the support frame 51 to stratify the sediment entering the drainage tank 1, the consistency of the mud can be improved, and the efficiency of loading sediment by the bucket dredger can be improved.

[0035] Reference Figure 2 , Figure 3 and Figure 4The shaking assembly 53 includes a reciprocating disk 531 arranged on the support frame 51, and a reciprocating rod 1 532 is arranged on the reciprocating disk 531, one end of the reciprocating rod 1 532 is eccentrically connected to the reciprocating disk 531, and the end of the reciprocating rod 1 532 away from the reciprocating disk 531 is rotatably connected to the reciprocating rod 2 533, and the end of the reciprocating rod 2 533 away from the reciprocating rod 1 532 is fixedly connected to the filter screen 52, and a sliding connection limit rod 534 is sleeved on the reciprocating rod 2 533, and a driving member 535 is arranged between the reciprocating disk 531 and the drainage compartment 1.

[0036] In the process of filtering the mud by using the filter screen 52, the driving member 535 is used to drive the reciprocating disk 531 to rotate. When the reciprocating disk 531 rotates, it drives the reciprocating rod 1 532. The reciprocating rod 1 532 drives the reciprocating rod 2 533. The reciprocating rod 2 533 reciprocates under the restriction of the limit rod 534. In the process of the movement of the reciprocating rod 2 533, the reciprocating rod 2 533 drives the filter screen 52 to swing back and forth. The filter screen 52 swings back and forth so that the mud and sand attached to the filter screen 52 are remixed in the mud. By driving the reciprocating disk 531 to move back and forth when it rotates, the reciprocating rod 2 533 drives the filter screen 52 to move back and forth, so that the filter screen 52 can impact with the mud of the fluid when it moves, so that the mud and sand attached to the filter screen 52 can fall off, thereby reducing the possibility of mud and sand blocking the filter screen 52.

[0037] Reference Figure 2 and Figure 3 The driving member 535 includes a support rod 5351 fixed on the support frame 51, and a rotating shaft 5352 is rotatably connected to the support rod 5351. One end of the rotating shaft 5352 is fixedly connected to the reciprocating disk 531. A driving motor 5353 is fixed on the drainage compartment 1. The output end of the driving motor 5353 passes through the drainage compartment 1 and the support rod 5351, and is fixedly connected to the rotating shaft 5352.

[0038] The output end of the driving motor 5353 is used to drive the rotating shaft 5352 to rotate on the support rod 5351. When the rotating shaft 5352 rotates, it drives the reciprocating disk 531 to rotate. By driving the driving motor 5353 to drive the rotating shaft 5352 to rotate under the support of the support rod 5351, the reciprocating disk 531 can be easily supported and the reciprocating disk 531 can be rotated at the same time.

[0039] Reference Figure 2 and Figure 5 The sedimentation reducing mechanism 6 includes two moving rods 61 symmetrically arranged in the drainage compartment 1, a plurality of evenly distributed resistance rods 62 are fixed between the two moving rods 61, the resistance rods 62 abut against the bottom of the drainage compartment 1, a support plate 64 is fixed between the two moving rods 61, and a moving assembly 63 is arranged between the support plate 64 and the reciprocating disk 531.

[0040] When the reciprocating disk 531 rotates, the reciprocating disk 531 drives the moving assembly 63, and the moving assembly 63 drives the supporting plate 64 to move back and forth. The two ends of the supporting plate 64 drive the two moving rods 61 to move at the bottom of the drainage compartment 1 at the same time. During the movement of the moving rod 61, the resistance rod 62 drives the resistance rod 62, and the resistance rod 62 moves back and forth at the bottom of the drainage compartment 1 with the moving rod 61. When the resistance rod 62 moves, it pushes the mud at the bottom of the drainage compartment 1 back and forth, so that the mud drives the sediment settled at the bottom of the drainage compartment 1 when it flows, so that the sediment settled is mixed with the mud again, and then flows out of the drainage compartment 1 together with the flow of the mud. By using the reciprocating disk 531 to drive the moving assembly 63, the moving assembly 63 uses the supporting plate 64 to drive the resistance rod 62 to move back and forth, so that the sediment settled at the bottom of the drainage compartment 1 can be mixed with the mud again, thereby reducing the possibility of sediment settling and accumulating in the drainage compartment 1, affecting the flow of thick mud.

[0041] Reference Figure 2 and Figure 5 The moving assembly 63 includes a connecting block 632 fixed on the supporting plate 64, a vertical slide groove 633 is opened on the connecting block 632, a connecting rod 631 is arranged on the connecting block 632, one end of the connecting rod 631 is located in the vertical slide groove 633 and is slidingly connected to the connecting block 632, and one end of the connecting rod 631 away from the connecting block 632 is eccentrically connected to the rotating disk.

[0042] While the reciprocating disk 531 rotates, the reciprocating disk 531 drives the connecting rod 631, allowing the connecting rod 631 to move vertically and left and right under the restriction of the limiter, allowing one end of the connecting rod 631 to slide in the vertical slide groove 633 of the connecting block 632. During the movement of the connecting rod 631, the connecting rod 631 drives the support plate 64 to move horizontally left and right, allowing the support plate 64 to drive the moving rod 61 and the resistance rod 62 to move. By allowing the reciprocating disk 531 to drive the connecting rod 631 when rotating, the connecting rod 631 is allowed to move vertically and left and right on the connecting block 632, thereby allowing the support plate 64 to drive the resistance rod 62 to move back and forth at the bottom of the drainage compartment 1.

[0043] Reference Figure 2 and Figure 5The limit block 634 is fixed on the connecting block 632, and the connecting rod 631 passes through the limit block 634 and is slidably connected with the limit block 634. The limit block 634 is slidably connected with the connecting rod 631. When the rotating disk drives the connecting rod 631, the limit block 634 limits the connecting rod 631, so that the connecting rod 631 moves vertically. At the same time, the connecting rod 631 moves horizontally under the drive of the reciprocating disk 531. When the connecting rod 631 moves in the vertical slide groove 633, it drives the connecting block 632 to move horizontally. By limiting the connecting rod 631 by the limit block 634, the connecting rod 631 and the connecting block 632 can be kept vertical.

[0044] Working principle: Move the trailing suction dredger to the working waters, and then use the trailing suction system to send the mud through the conveying system, send the mud to the water inlet pipe 2, and then enter the drainage tank 1 from the water inlet pipe 2, connect the water inlet pipe 2 with the conveying system of the trailing suction dredger, and the mud transported by the conveying system is sent to the drainage tank 1. First, let the valve 1 7 and the valve 2 8 close the outlet pipe 1 3 and the outlet pipe 2 4 to let the mud fill the drainage tank 1. When the mud is injected into the drainage tank 1, close the valve 1 7 and the valve 2 8. The liquid level of the mud in the drainage tank 1 slowly rises, and then the mud contacts the filter screen 52 on the support frame 51, and the water and fine sediment in the mud pass through Filter screen 52, when the water level detector 54 detects that the water in the drainage tank 1 is full, open valve 1 7 and valve 2 8 to allow mud to pass through the outlet pipe 1 3 and then enter the trailing suction dredger. The water and fine sediment on the filter screen 52 are discharged from the outlet pipe 2 4 under the action of the external water pump. At the same time, the output end of the driving motor 5353 is used to drive the rotating shaft 5352 to rotate on the supporting rod 5351. When the rotating shaft 5352 rotates, it drives the reciprocating disk 531 to rotate. When the reciprocating disk 531 rotates, it drives the reciprocating rod 1 532. The reciprocating rod 1 532 drives the reciprocating rod 2 533. The reciprocating rod 2 533 rotates. The filter screen 52 is swung back and forth, and the filter screen 52 is swung back and forth, so that the silt attached to the filter screen 52 is remixed in the mud. When the reciprocating disk 531 rotates, the reciprocating disk 531 drives the connecting rod 631, so that the connecting rod 631 moves vertically and left and right under the restriction of the limiter, so that one end of the connecting rod 631 slides in the vertical slide groove 633 of the connecting block 632. When the connecting rod 631 moves, the connecting rod 631 drives the support plate 64 to move left and right, so that the support plate 64 drives The moving rod 61 and the resistance rod 62 move, and the resistance rod 62 moves back and forth at the bottom of the drainage tank 1 with the moving rod 61. The resistance rod 62 pushes the mud at the bottom of the drainage tank 1 back and forth when moving, so that the mud drives the sediment settled at the bottom of the drainage tank 1 when flowing, and the settled sediment is remixed with the mud, and then flows out of the drainage tank 1 together with the flow of the mud. After the water mixture fills the mud tank, dredging continues, so that coarse particles of soil will settle at the bottom of the mud tank, and low-concentration mud will float on the upper layer, and then flow out of the mud tank through the overflow tube. After loading is completed, the dredged soil in the mud tank is transported to the designated mud dumping area and unloaded through the mud door at the bottom of the ship.

Claims

1. A method for filtering and draining mud from a trailing suction dredger and a device for implementing the method, characterized in that: The drainage method is as follows: S1: first move the trailing suction dredger to the water area to be dredged, then start the trailing suction system and push the trailing suction head deep into the water bottom; S2: The mud is then sent to the filtering and draining device through the mud conveying system, and the filtering and draining device performs a primary filtration on the sucked mud, and the filtered water is discharged from the filtering and draining mechanism to the outside again; S3: The mud left in the filter drainage mechanism continues to move along the conveying system, and then the mud moves to the mud tank on the ship; S4: After the mud-water mixture fills the mud tank, dredging continues, so that coarse soil particles will settle at the bottom of the mud tank, and low-concentration mud will float on the upper layer and then flow out of the mud tank through the overflow tube; S5: After loading, the dredged soil in the mud tank is transported to the designated dumping area and dumped through the mud door at the bottom of the ship. Alternatively, the mud can be connected to the water pipeline or the land shore pipeline through the mud discharge pipe to blow the mud to the designated area or directly blow it ashore.

2. A method for filtering and draining mud from a trailing suction hopper dredger and a device for implementing the same according to claim 1, characterized in that: The filtering and drainage device comprises a drainage chamber (1), a water inlet pipe (2) being fixed at one end of the drainage chamber (1), a water outlet pipe (3) being fixed at one end of the drainage chamber (1) away from the water inlet pipe (2), a water outlet pipe (4) being fixed on the drainage chamber (1), a filtering mechanism (5) being arranged in the drainage chamber (1), a sedimentation reduction mechanism (6) being arranged in the drainage chamber (1), a valve (7) being fixed on the water outlet pipe (3), and a valve (8) being installed on the water outlet pipe (4).

3. A method for filtering and draining mud from a trailing suction hopper dredger and a device for implementing the same according to claim 2, characterized in that: The filtering mechanism (5) comprises a support frame (51) fixed in the drainage chamber (1), a filter screen (52) being fixed on the support frame (51), a shaking assembly (53) being arranged between the drainage chamber (1) and the filter screen (52), and a water level detector (54) being fixed in the drainage chamber (1).

4. A method for filtering and draining mud from a trailing suction hopper dredger and a device for implementing the same according to claim 3, characterized in that: The shaking assembly (53) comprises a reciprocating disk (531) arranged on a support frame (51); a reciprocating rod 1 (532) is arranged on the reciprocating disk (531); one end of the reciprocating rod 1 (532) is eccentrically rotatably connected to the reciprocating disk (531); one end of the reciprocating rod 1 (532) away from the reciprocating disk (531) is rotatably connected to a reciprocating rod 2 (533); one end of the reciprocating rod 2 (533) away from the reciprocating rod 1 (532) is fixedly connected to the filter screen (52); a slidably connected limit rod (534) is sleeved on the reciprocating rod 2 (533); and a driving member (535) is arranged between the reciprocating disk (531) and the drainage compartment (1).

5. A method for filtering and draining mud from a trailing suction hopper dredger and a device for implementing the same according to claim 4, characterized in that: The driving member (535) comprises a support rod (5351) fixed on a support frame (51); a rotating shaft (5352) is rotatably connected to the support rod (5351); one end of the rotating shaft (5352) is fixedly connected to the reciprocating disk (531); a driving motor (5353) is fixed to the drainage compartment (1); an output end of the driving motor (5353) passes through the drainage compartment (1) and the support rod (5351), and is fixedly connected to the rotating shaft (5352).

6. A method for filtering and draining mud from a trailing suction hopper dredger and a device for implementing the same according to claim 4, characterized in that: The sedimentation reduction mechanism (6) comprises two moving rods (61) symmetrically arranged in the drainage chamber (1), a plurality of evenly distributed abutment rods (62) are fixed between the two moving rods (61), the abutment rods (62) abut against the bottom of the drainage chamber (1), a support plate (64) is fixed between the two moving rods (61), and a moving assembly (63) is arranged between the support plate (64) and the reciprocating disc (531).

7. A method for filtering and draining mud from a trailing suction hopper dredger and a device for implementing the same according to claim 6, characterized in that: The moving assembly (63) comprises a connecting block (632) fixed on a supporting plate (64), a vertical sliding groove (633) being provided on the connecting block (632), a connecting rod (631) being provided on the connecting block (632), one end of the connecting rod (631) being located in the vertical sliding groove (633) and being slidably connected to the connecting block (632), and one end of the connecting rod (631) being away from the connecting block (632) being eccentrically rotatably connected to the rotating disk.

8. A method for filtering and draining mud from a trailing suction hopper dredger and a device for implementing the same according to claim 7, characterized in that: A limit block (634) is fixed on the connection block (632), and the connection rod (631) passes through the limit block (634) and is slidably connected to the limit block (634).

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