A dredger relay mud discharge device

Abstract

This invention discloses a relay mud discharge device for dredgers, belonging to the field of dredger technology. The device includes a main engine room, and further includes: a rib added to the port side aft of the main engine room; a paint compartment connected to the port side forward of the main engine room; an underwater mud pump unit installed on the port side aft of the main engine room; a secondary mud pump unit installed on the port side forward of the main engine room; and a tertiary mud pump unit installed in the middle of the main engine room. The underwater mud pump unit has a mud suction end and a mud discharge end on its pump body. A mud suction pipe is installed on the mud suction end, and a filter plate for intercepting gravel is fixed inside the mud suction pipe. A stone discharge mechanism is installed below the filter plate on the mud suction pipe. This invention can solve the engineering needs of long-distance mud discharge, meeting the dredging needs of traditional primary and secondary mud discharge cutter suction devices, which are difficult to adapt to long-distance mud discharge. It eliminates the need to add another traditional primary and secondary mud discharge device or to add mud boats or barges for high fuel consumption and low efficiency long-distance round-trip transportation, greatly improving construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of dredging technology, and in particular to a dredging relay dredging device. Background Technology

[0002] A cutter suction dredger uses a rotating cutter head to loosen soil from the riverbed or seabed, mix it with cement to form slurry, which is then sucked into the pump body through a suction pipe and transported to the discharge area through a discharge pipe. During operation, the dredging, conveying, and unloading of slurry are all integrated and completed by the dredger itself, resulting in high production efficiency.

[0003] In recent years, with the vigorous acceleration of port construction and land reclamation both domestically and internationally, the dredging industry has developed rapidly. In order to meet market demand, dredging companies have built many cutter suction dredgers. With the increase in underwater engineering and strict environmental protection requirements, the discharge distance of traditional cutter suction dredgers with primary and secondary discharge devices is no longer suitable for the dredging needs of long-distance discharge. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a dredging vessel relay mud discharge device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A dredging vessel relay mud discharge device includes a main engine room, and further includes: a rib added to the port side aft of the main engine room; a paint room connected to the port side forward of the main engine room; an underwater mud pump unit installed on the port side aft of the main engine room; a secondary mud pump unit installed on the port side forward of the main engine room; a tertiary mud pump unit installed in the middle of the main engine room; the mud pump body of the underwater mud pump unit is provided with a mud suction end and a mud discharge end; a mud suction pipe is provided on the mud suction end; a filter plate for intercepting gravel is fixed inside the mud suction pipe; and a stone discharge mechanism is provided on the lower side of the filter plate.

[0007] Preferably, the stone discharge mechanism includes a shell fixed to the mud suction pipe, a rotating seat rotatably connected to the shell, a plurality of material receiving grooves evenly distributed in a circle on the rotating seat, and a drive motor fixed to the shell for driving the rotating seat to rotate. The rotating seat is rotatably connected to the mud suction pipe, and a material discharge groove that cooperates with the material receiving grooves is provided at the bottom of the shell.

[0008] Preferably, a pusher is slidably connected inside the receiving groove, and the side of the pusher closest to the central axis of the rotating seat is set as an arc surface. The outer shell is provided with a driving part for driving the pusher to move.

[0009] Preferably, the drive unit includes a fixed rod fixed inside the housing, a bidirectional reciprocating screw rotatably disposed inside the fixed rod, a driven bevel gear disposed at the end of the bidirectional reciprocating screw, a fixed bevel gear fixedly connected to the rotating seat via a connecting plate, and sleeves threadedly connected to both ends of the bidirectional reciprocating screw. Each sleeve is movably connected to a swing rod, and the ends of the two swing rods away from the sleeves are movably connected and movably abut against the push seat. The fixed rod is fixed on the side of the housing away from the drive motor.

[0010] Preferably, a rotating ring is rotatably connected to the outside of the fixed rod, and an elastic telescopic rod is provided between the rotating ring and the push seat.

[0011] Preferably, a water storage tank is provided inside the outer shell, and a filter screen is provided at the opening of the water storage tank to move against the rotating seat. A return water pipe is provided between the water storage tank and the sludge pumping pipe.

[0012] Preferably, a rotating rod is rotatably connected inside the sludge suction pipe, a crankshaft is provided on the rotating rod, a collar is sleeved on the crankshaft, a connecting rod is fixed on the collar, and a movable frame is movably connected to the end of the connecting rod away from the collar. The movable frame is slidably connected to the inner wall of the sludge suction pipe, and a plurality of top rods are provided on the movable frame to be inserted into the filter holes of the filter plate.

[0013] Preferably, the rotating rod has at least two sets of crankshafts, which are respectively located on both sides of the rotating rod. The two sets of crankshafts drive the top rods on their respective connected movable frames to alternately insert into the filter plates and filter holes.

[0014] Preferably, the rotating rod is provided with a paddle, and the mud suction pipe is provided with a guide block for guiding, the outer surface of the guide block being an arc surface or an inclined surface.

[0015] Preferably, the three-stage mud pump unit is at least pressure-resistant to 25 Bar, and all parts of the mud pump in the three-stage mud pump unit must meet the strength test requirement of 37.5 Bar and the tightness test requirement of 25 Bar. The three-stage mud pump unit includes three mud pump sealing pumps, two of which are used for operation and the remaining one is a spare.

[0016] Compared with the prior art, the present invention provides a dredging vessel relay sludge discharge device, which has the following beneficial effects:

[0017] 1. This dredging vessel relay sludge discharge device fully utilizes the traditional primary and secondary sludge discharge devices, excavates sufficient remaining space, and adds a third-stage relay sludge discharge device. This satisfies the dredging needs of long-distance sludge discharge that are difficult to adapt to by the traditional primary and secondary sludge discharge cutter suction devices. It eliminates the need to add another traditional primary and secondary sludge discharge device or to add dredgers and barges for long-distance round-trip transportation that is fuel-intensive and inefficient, thus greatly improving construction efficiency.

[0018] 2. The dredging vessel's relay sludge discharge device, by setting a stone discharge mechanism on the underside of the filter plate of the sludge pumping pipe, can transfer and remove large pieces of gravel intercepted by the filter plate without the need to stir and crush the gravel inside the sludge pumping pipe, thus avoiding collisions between the gravel and the crushing blades and the inner wall of the pipe, which would reduce the service life of the sludge pumping pipe and the crushing blades.

[0019] 3. The dredging vessel's relay sludge discharge device, by setting up two sets of movable frames, allows the movable frames to drive the top rods to alternately insert into the filter holes on the filter plate, making the filter plate less prone to clogging, ensuring the efficiency of the sludge pump in sludge discharge and water delivery, avoiding the need for the sludge pump to stop to replace or clean the filter plate, thus affecting the sludge discharge progress and reducing the workload of the staff. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal layout structure of the main engine compartment of the present invention;

[0021] Figure 2 This is a schematic diagram of the external structure of the mud pump body of the present invention;

[0022] Figure 3 This is a schematic diagram of the external structure of the mud suction pipe of the present invention;

[0023] Figure 4 This is a schematic cross-sectional view of the mud suction pipe of the present invention. Figure 1 ;

[0024] Figure 5 For the present invention Figure 4 A partially enlarged structural diagram of section A in the middle;

[0025] Figure 6 This is a schematic cross-sectional view of the mud suction pipe of the present invention. Figure 2 ;

[0026] Figure 7 For the present invention Figure 6 A partially enlarged structural diagram of section B in the middle;

[0027] Figure 8 This is a schematic diagram of the rotating base of the present invention.

[0028] In the diagram: 1. Main engine compartment; 101. Rib; 2. Paint shop; 3. Underwater mud pump unit; 301. Mud pump body; 3011. Mud pumping end; 3012. Mud discharge end; 4. Secondary mud pump unit; 5. Tertiary mud pump unit; 6. Mud pumping pipe; 601. Filter plate; 7. Outer shell; 701. Rotating seat; 702. Material receiving trough; 703. Drive motor; 704. Fixed bevel gear; 705. Connecting plate; 8. Push seat; 9. Fixed rod; 901. Bidirectional reciprocating screw; 902. Driven bevel gear; 903. Sleeve; 904. Swing rod; 905. Rotating ring; 906. Elastic telescopic rod; 10. Material chute; 11. Water storage tank; 111. Filter screen; 112. Water return pipe; 12. Rotating rod; 121. Crankshaft; 122. Collar; 123. Connecting rod; 124. Movable frame; 1241. Push rod; 125. Paddle. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Example 1: Refer to Figure 1 , Figure 2 and Figure 4 A dredging vessel relay mud discharge device includes a main engine room 1, and further includes: a rib 101 added to the port side of the rear of the main engine room 1; a paint room 2 connected to the port side of the front of the main engine room 1; an underwater mud pump unit 3 installed at the port side of the rear of the main engine room 1; a secondary mud pump unit 4 installed on the port side of the front of the main engine room 1; a tertiary mud pump unit 5 installed in the middle of the main engine room 1; the mud pump body 301 of the underwater mud pump unit 3 is provided with a mud suction end 3011 and a mud discharge end 3012; a mud suction pipe 6 is provided on the mud suction end 3011; a filter plate 601 for intercepting gravel is fixed inside the mud suction pipe 6; and a stone discharge mechanism is provided on the lower side of the filter plate 601 of the mud suction pipe 6.

[0032] Furthermore, the three-stage mud pump unit 5 must withstand a pressure of at least 25 Bar. All parts of the mud pump in the three-stage mud pump unit 5 must meet the strength test requirement of 37.5 Bar and the tightness test requirement of 25 Bar. The three-stage mud pump unit 5 includes three mud pump sealing pumps, two of which are used for operation and the remaining one is a spare.

[0033] Specifically, the layout is based on the original ship. A rib 101 is added aft on the port side of the main engine room 1. The paint shop 2 on the port side of the forward part of the main engine room 1 is incorporated into the main engine room 1. The original underwater mud pump diesel generator set is moved to the port side aft of the main engine room 1. The original secondary mud pump (pressure resistance above 17 Bar) is moved to the port side of the open deck forward of the main engine room 1. At the same time, the diesel engine and gearbox of the original secondary mud pump are moved to the port side of the forward part of the main engine room 1, causing the entire secondary mud pump unit 4 to be displaced. Subsequently, the original secondary mud pump unit 4 is moved to the port side of the open deck forward of the main engine room 1. A three-stage mud pump unit 5 (pressure resistant above 25 Bar) is added to the pump unit 4. The three-stage mud pump unit 5 has a total of three mud pumps and sealing water pumps, with two in use and one as a standby. The head of the sealing water pump is increased to 250m, which meets the 25 Bar tightness test requirements. The modified three-stage mud discharge cutter suction device solves the problem of insufficient mud discharge distance. It is not necessary to add another traditional first- or second-stage mud discharge device vessel or mud transport vessel / barge, which reduces the situation of high fuel consumption and low efficiency of long-distance round-trip transportation, and achieves energy saving and emission reduction.

[0034] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As a preferred technical solution of the present invention, the stone discharge mechanism further includes a housing 7 fixed on the mud suction pipe 6, a rotating seat 701 rotatably connected to the housing 7, a plurality of material receiving grooves 702 evenly opened on the rotating seat 701 in a circular pattern, and a drive motor 703 fixed on the housing 7 for driving the rotating seat 701 to rotate. The rotating seat 701 is rotatably connected to the mud suction pipe 6, and the bottom of the housing 7 is provided with a material discharge groove 10 that cooperates with the material receiving grooves 702.

[0035] Specifically, under the suction of the mud pump, the water carrying gravel moves within the mud pumping pipe 6. The gravel is intercepted by the filter plate 601 and falls into the receiving trough 702 of the rotating seat 701. By controlling the operation of the drive motor 703, the output shaft of the drive motor 703 drives the rotating seat 701 to rotate relative to the outer shell 7. The rotating seat 701 drives the gravel collected in the receiving trough 702 to rotate. When the receiving trough 702 coincides with the discharge trough 10, the gravel in the receiving trough 702 falls through the discharge trough 10, realizing the transfer and removal of large pieces of gravel intercepted by the filter plate 601. There is no need to stir and crush the gravel in the mud pumping pipe 6, avoiding the gravel from colliding with the crushing blades and the inner wall of the pipe, thus reducing the service life of the mud pumping pipe 6 and the crushing blades.

[0036] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As a preferred technical solution of the present invention, a pusher 8 is slidably connected inside the receiving groove 702. The side of the pusher 8 near the central axis of the rotating seat 701 is set as an arc surface, and a driving part for driving the displacement of the pusher 8 is provided on the outer shell 7.

[0037] Furthermore, the drive unit includes a fixed rod 9 fixed inside the housing 7, a bidirectional reciprocating screw 901 rotatably disposed inside the fixed rod 9, a driven bevel gear 902 disposed at the end of the bidirectional reciprocating screw 901, a fixed bevel gear 704 fixedly connected to the rotating seat 701 via a connecting plate 705, and sleeves 903 threadedly connected to both ends of the bidirectional reciprocating screw 901. Each sleeve 903 is movably connected to a swing rod 904. The ends of the two swing rods 904 away from the sleeves 903 are movably connected and movably abut against the push seat 8. The fixed rod 9 is fixed on the side of the housing 7 away from the drive motor 703.

[0038] Furthermore, a rotating ring 905 is rotatably connected to the outside of the fixed rod 9, and an elastic telescopic rod 906 is provided between the rotating ring 905 and the push seat 8.

[0039] Specifically, when the rotating seat 701 rotates relative to the outer shell 7, the rotating seat 701 drives the fixed bevel gear 704 to rotate through the connecting plate 705. The fixed bevel gear 704 meshes with the driven bevel gear 902 at the end of the bidirectional reciprocating screw 901, causing the bidirectional reciprocating screw 901 to rotate. When the bidirectional reciprocating screw 901 rotates, the two sleeves 903 connected by the outer thread move back and forth. When the two sleeves 903 approach each other, they drive the other end of the swing rod 904 to abut against the push seat 8, and the elastic telescopic rod 906 is stretched, causing the push seat 8 to slide in the receiving groove 702, thereby pushing out the crushed stone that may be stuck in the receiving groove 702, ensuring the subsequent crushed stone receiving capacity of the receiving groove 702, and thus ensuring the continuous and stable operation of the stone discharge mechanism.

[0040] Reference Figure 2 , Figure 3 , Figure 4 and Figure 6 As a preferred technical solution of the present invention, a water storage tank 11 is further provided inside the outer shell 7, and a filter screen 111 is provided at the opening of the water storage tank 11 to move against the rotating seat 701. A return water pipe 112 is provided between the water storage tank 11 and the mud pumping pipe 6.

[0041] Specifically, after the receiving trough 702 receives the crushed stone and rotates, some water will accumulate in the receiving trough 702. When the water rotates with the rotating seat 701 to the filter screen 111, it will enter the water storage tank 11. When the sludge suction pipe 6 sucks, it will have a suction force on the return water pipe 112. The water that enters the water storage tank 11 will flow back to the sludge suction pipe 6 through the return water pipe 112.

[0042] Reference Figure 4 , Figure 5 and Figure 6 As a preferred technical solution of the present invention, a rotating rod 12 is rotatably connected inside the mud suction pipe 6. A crank shaft 121 is provided on the rotating rod 12. A collar 122 is sleeved on the crank shaft 121. A connecting rod 123 is fixed on the collar 122. A movable frame 124 is movably connected to the end of the connecting rod 123 away from the collar 122. The movable frame 124 is slidably connected to the inner wall of the mud suction pipe 6. A plurality of top rods 1241 are provided on the movable frame 124 and inserted into the filter holes of the filter plate 601.

[0043] Furthermore, at least two sets of crankshafts 121 are provided on the rotating rod 12. The two sets of crankshafts 121 are respectively provided on both sides of the rotating rod 12. The two sets of crankshafts 121 drive the top rods 1241 on their respective connected movable frames 124 to alternately insert into the filter holes of the filter plate 601.

[0044] Furthermore, a lever 125 is provided on the rotating rod 12, and a guide block for guiding is provided inside the mud suction pipe 6. The outer surface of the guide block is set as an arc surface or a slope surface.

[0045] Specifically, when the mud pump is working, it generates suction on the mud suction pipe 6. The suction is guided by the guide block inside the mud suction pipe 6 and drives the paddle 125 to swing. The paddle 125 drives the rotating rod 12 to rotate. At the same time, the fluid sucked in the mud suction pipe 6 also drives the paddle 125, causing the rotating rod 12 to drive the crankshaft 121 to rotate. The crankshaft 121 drives the movable frame 124 to move laterally along the inner wall of the mud suction pipe 6 through the collar 122 and the connecting rod 123. The crankshaft 121 is set on both sides of the rotating rod 12, so that the movable frame 124 drives the top rod 1241 to alternately insert and connect to the filter holes on the filter plate 601, so that the filter plate 601 is not easily blocked, ensuring the mud pump's mud discharge and water delivery efficiency, avoiding the mud pump stopping to replace or clean the filter plate 601, which would affect the mud discharge progress, and at the same time reducing the workload of the staff.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dredging vessel relay dredging device, comprising a main engine compartment (1), characterized in that, Also includes: A rib (101) is added to the port side of the rear of the main engine room (1). The port side of the front of the main engine room (1) is connected to the paint room (2). An underwater mud pump unit (3) is set at the port side of the rear of the main engine room (1). A secondary mud pump unit (4) is installed on the port side of the front of the main engine room (1). A tertiary mud pump unit (5) is installed in the middle of the main engine room (1). The mud pump body (301) of the underwater mud pump unit (3) is provided with a mud pumping end (3011) and a mud discharge end (3012). A mud pumping pipe (6) is provided on the mud pumping end (3011). A filter plate (601) for intercepting gravel is fixed inside the mud pumping pipe (6). A stone discharge mechanism is provided on the lower side of the filter plate (601) of the mud pumping pipe (6). The stone discharge mechanism includes an outer shell (7) fixed on the mud pumping pipe (6), a rotating seat (701) rotatably connected to the outer shell (7), a plurality of material receiving grooves (702) evenly distributed on the rotating seat (701) in a circular pattern, and a drive motor (703) fixed on the outer shell (7) for driving the rotating seat (701) to rotate. The rotating seat (701) is rotatably connected to the mud pumping pipe (6), and the bottom of the outer shell (7) is provided with a material dropping groove (10) that cooperates with the material receiving grooves (702). A pusher (8) is slidably connected inside the receiving groove (702). The side of the pusher (8) near the central axis of the rotating seat (701) is set as an arc surface. A driving part for driving the pusher (8) to move is provided on the outer shell (7). The drive unit includes a fixed rod (9) fixed inside the housing (7), a bidirectional reciprocating screw (901) rotatably disposed inside the fixed rod (9), a driven bevel gear (902) disposed at the end of the bidirectional reciprocating screw (901), a fixed bevel gear (704) fixedly connected to the rotating seat (701) via a connecting plate (705), and sleeves (903) threadedly connected to both ends of the bidirectional reciprocating screw (901). Each sleeve (903) is movably connected to a swing rod (904). The ends of the two swing rods (904) away from the sleeves (903) are movably connected and movably abut against the push seat (8). The fixed rod (9) is fixed on the side of the housing (7) away from the drive motor (703). A rotating ring (905) is rotatably connected to the outside of the fixed rod (9), and an elastic telescopic rod (906) is provided between the rotating ring (905) and the push seat (8).

2. The dredging vessel relay sludge discharge device according to claim 1, characterized in that, The outer shell (7) has a water storage tank (11) inside. A filter screen (111) is provided at the opening of the water storage tank (11) to move against the rotating seat (701). A return water pipe (112) is provided between the water storage tank (11) and the mud pumping pipe (6).

3. The dredging vessel relay sludge discharge device according to claim 2, characterized in that, A rotating rod (12) is rotatably connected inside the mud suction pipe (6). A crank shaft (121) is provided on the rotating rod (12). A collar (122) is sleeved on the crank shaft (121). A connecting rod (123) is fixed on the collar (122). A movable frame (124) is movably connected to one end of the connecting rod (123) away from the collar (122). The movable frame (124) is slidably connected to the inner wall of the mud suction pipe (6). Several top rods (1241) are provided on the movable frame (124) and inserted into the filter holes of the filter plate (601).

4. The dredging vessel relay sludge discharge device according to claim 3, characterized in that, At least two sets of crankshafts (121) are provided on the rotating rod (12). The two sets of crankshafts (121) are respectively provided on both sides of the rotating rod (12). The two sets of crankshafts (121) drive the top rods (1241) on their respective connected movable frames (124) to alternately insert into the filter holes of the filter plate (601).

5. A dredging vessel relay sludge discharge device according to claim 4, characterized in that, The rotating rod (12) is provided with a paddle (125), and the mud suction pipe (6) is provided with a guide block for guiding. The outer surface of the guide block is set as an arc surface or a slope.

6. The dredging vessel relay sludge discharge device according to claim 1, characterized in that, The three-stage mud pump unit (5) must withstand a pressure of at least 25 Bar. All parts of the mud pump in the three-stage mud pump unit (5) must meet the strength test requirement of 37.5 Bar and the tightness test requirement of 25 Bar. The three-stage mud pump unit (5) includes three mud pump sealing pumps, two of which are used for operation and the remaining one is for standby.

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