Slurry spraying and sucking device of dredging equipment

Abstract

The invention relates to the technical field of underwater dredging, in particular to a mud jetting and sucking device of dredging equipment. The mud spraying and sucking device of the dredging equipment comprises a water inlet mechanism provided with a water pump, the water pump is connected with a water tank of a water distribution mechanism, the water tank is connected with a jet spraying mechanism and a sucking mechanism, the jet spraying mechanism comprises a jet arm communicated with the water tank, and a nozzle is arranged on the jet arm. The suction mechanism comprises a venturi ejector communicated with the water tank, a negative pressure cavity of the venturi ejector is connected with a slurry suction cup, and the slurry suction cup is installed below the water distribution mechanism through a supporting frame. Spraying and suction are integrated, the structure is compact, the dredging efficiency is high, slurry with large-particle impurities can be sucked, and multi-angle and multi-direction slurry suction can be conducted through manual control.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater dredging, and in particular to a mud jet flushing and suction device for dredging equipment. Background Art

[0002] Dredging is an engineering activity for cleaning, removing sediment and trimming waterways in waters such as seabed riverbeds, seaports, and waterways, which is crucial for maintaining marine water conservancy facilities, promoting marine economic development, and protecting the ecological environment. The treatment of mud during dredging operations is necessary. If the mud is not cleared in time, it will cause the waterway, river or port to narrow again. The mud may contain various organic or inorganic substances, and the release in water may cause water pollution problems. Moreover, in some engineering projects, if the mud is not processed in time, it may enter pipelines and equipment, causing equipment blockage and damage, affecting the normal operation of the project. Currently, there are few mud suction devices that can effectively and energy-efficiently suck large-particle impurities. Traditional mud suction devices such as mud pumps have defects such as easy equipment blockage and high maintenance costs, and the effect of sucking mud with large-particle impurities is very unsatisfactory.

[0003] Mud suction and transportation is an important part of the entire dredging operation process. The dredging area usually contains a large amount of mud, sediment and solid particles. Mud suction is of great significance for restoring the water depth, maintaining ports and waterways, preventing sediment deposition, reducing flood risks and protecting infrastructure. The mud suction devices currently used on the market are highly dependent on whether there are large-particle impurities in the mud. Some devices cannot suck mud containing large-particle impurities, which will cause blockage or damage to the device; moreover, the existing mud suction devices are large in size, which will cause waste of resources and high operating costs for dredging operations for small-scale engineering construction; most mud suction devices use a pump body alone to suck mud during operation, which requires a large amount of energy consumption and cannot achieve multi-directional suction function, and the suction efficiency is low.

[0004] The patent with the authorization announcement number CN216428376U discloses a mud suction device, specifically related to the technical field of environmental treatment, and in particular to a mud suction device. It includes a floating barrel, an electric hoist and a suction mechanism. The electric hoist is arranged on the floating barrel. A guide rope channel is provided on the floating barrel, and the lifting rope of the electric hoist passes through the guide rope channel and is connected to the suction mechanism. By adjusting the water depth of the sand discharge pump through the electric hoist, it can ensure that the sand discharge pump can timely adjust the diving depth and contact the mud deposition surface. In regulating ponds with different silt thicknesses, the diving depth of the sand discharge pump can be flexibly and conveniently adjusted according to the working conditions. The whole device can be very conveniently adjusted in the plane position by moving the floating barrel. However, this device only has a suction function and has a poor effect on removing stubbornly attached mud.

[0005] In summary, there is an urgent need to design a compact and efficient mud suction device that combines jet flushing and suction, can overcome the shortcomings of the existing technology, can suck mud with large particle impurities, and can perform multi-angle and multi-directional mud suction through manual control. Summary of the Invention

[0006] To solve at least one of the above technical problems, the present invention provides a dredging equipment mud jet flushing and suction device, which includes a water inlet mechanism provided with a water pump. The water pump is connected to a water tank of a water distribution mechanism. The water tank is respectively connected to a jet flushing mechanism and a suction mechanism. The jet flushing mechanism includes a jet arm communicated with the water tank. Nozzles are provided on the jet arm. The suction mechanism includes a Venturi ejector communicated with the water tank. The negative pressure chamber of the Venturi ejector is connected to a mud suction cup. The mud suction cup is installed below the water distribution mechanism through a support frame.

[0007] Preferably, the water inlet mechanism further includes a sand-proof diversion cover communicated with the water inlet end of the water pump. A sedimentation tank for sediment is detachably provided at the bottom of the sand-proof diversion cover. A water inlet is vertically provided on the side facing the water pump. A sand-proof net is provided on the water inlet. The water inlet extends upward above the water pump, and the sedimentation tank for sediment extends downward below the water pump.

[0008] Preferably, the water tank includes a cylindrical first water distribution tank and a second water distribution tank that are parallel and horizontally arranged. The water distribution mechanism is provided with two water pipes connecting the first water distribution tank and the second water distribution tank in parallel. An outlet pipe communicated with the Venturi ejector is provided on the second water distribution tank. The first water distribution tank is respectively communicated with the water pump and the jet arm. The water pump is arranged in parallel between the two water pipes. A rubber pressure buffer cylinder communicated with the water pump is provided on one side of the first water distribution tank opposite to the water pump.

[0009] Preferably, two jet arms capable of rotating around the axis of the first water distribution tank are symmetrically provided at both axial ends of the first water distribution tank. The jet arms are in an L shape. The vertical section extends along the radial direction of the first water distribution tank and is rotatably connected to the first water distribution tank. The horizontal section extends toward the second water distribution tank and is provided with nozzles. A connecting rod is provided between the two jet arms. A first motor is provided on the first water distribution tank. A first gear is provided on the rotating shaft of the first motor. A toothed ring meshing with the first gear is provided on one of the jet arms.

[0010] Preferably, the nozzles include a fixed nozzle provided at the end of the jet arm and several rotating nozzles rotatably arranged along the length direction at the bottom of the jet arm. The rotating nozzles include a vertical section and an inclined section with an included angle greater than 90 degrees. The vertical section is rotatably connected to the jet arm and is provided with a first sprocket. A chain meshing with the first sprocket and a second motor are provided at the bottom of the jet arm. A second sprocket meshing with the chain is provided on the rotating shaft of the second motor.

[0011] Preferably, a plurality of Venturi ejectors and water outlet pipes are provided correspondingly. The branch pipes of the confluence pipe are connected to the injection pipes of the Venturi ejectors, and the main pipe is connected to the mud delivery pipe.

[0012] Preferably, the Venturi ejector includes a circular pipe, a tapered suction pipe that tapers gradually, a throat pipe, and a tapered injection pipe that expands gradually, which are connected in sequence. An inlet pipe communicating with the water outlet pipe is provided at the top of the circular pipe. One end close to the second water separation tank is hermetically butted with a mud suction pipe. One end of the mud suction pipe extends into the tapered suction pipe and forms an annular cavity with the circular pipe, and the other end is provided with a hose communicating with a mud suction cup. The inside of the tapered suction pipe is a negative pressure cavity.

[0013] Preferably, the support frame includes vertical rods respectively provided on the water delivery pipe and the water outlet pipe, and a winch provided at the bottom of the water pump. The towing rope of the winch is connected to the mud suction cup. The bottom of the vertical rod is rotatably provided with a horizontal shaft, and a connecting rod hinged to the mud suction cup is provided on the horizontal shaft. The two horizontal shafts are located in the same horizontal plane, and the two connecting rods and the towing rope are located in the same vertical plane. A camera is provided at the bottom of the winch.

[0014] Preferably, the mud suction cup includes a hollow circular suction cup. A mud outlet pipe communicating with the negative pressure cavity of the Venturi ejector is provided at the top of the circular suction cup, and a plurality of mud inlets are provided equidistantly in the circumferential direction of the side wall.

[0015] Preferably, a circular baffle is rotatably provided on the inner side wall of the circular suction cup. An opening corresponding to the mud inlet is provided on the circular baffle. A plurality of radial rods are provided equidistantly in the circumferential direction of the inner side wall of the circular baffle. The radial rods are connected to a rotating shaft coaxial with the circular baffle, and a third motor for driving the rotating shaft to rotate is provided at the top of the circular suction cup.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] 1. In the present invention, the jet flushing mechanism and the suction mechanism work together. The jet flushing mechanism first disturbs and peels the mud, and the suction mechanism follows closely for efficient suction, realizing energy-saving, environmental protection, convenient and high-efficiency mud suction;

[0018] 2. The water inlet mechanism has a three-stage sand prevention structure design, which can effectively prevent the sediment in the water area from being sucked into the water pump, prevent the blockage of the water pump and the suction mechanism, improve the service life of the equipment, and reduce the maintenance cost;

[0019] 3. The water distribution mechanism supplies water to the jet flushing mechanism and the suction mechanism at the same time, improving the utilization efficiency of water resources. The rubber pressure buffer cylinder provided on the first water separation tank connected to the water pump can play a pressure buffering role, prevent the water inlet flow rate from being too fast and the pressure from being too large to damage the equipment, and improve the service life of the equipment;

[0020] 4. The jet flushing mechanism is provided with two rotatable jet arms. Fixed nozzles and several rotatable nozzles are arranged on the jet arms. By adjusting the jet directions of the jet arms and the rotatable nozzles, precise jetting at the target position can be achieved, effectively reducing the disturbance to the soil in the water area and protecting the underwater ecology.

[0021] 5. The suction mechanism works in cooperation with the mud suction cup through a Venturi ejector. The negative pressure chamber of the Venturi ejector provides suction for the mud suction cup. The annular baffle on the mud suction cup can control the opening and closing of the mud inlet by rotation, enabling the mud inlet to be aligned with the silt accumulation position for suction, thereby improving the suction efficiency.

[0022] 6. The mud suction cup is installed below the water distribution mechanism through a support frame. By controlling the winding and unwinding of the towing rope on the winch, the mud suction cup can be moved within a certain range, improving the flexibility of suction.

[0023] In summary, the present invention combines flushing and suction into one, with a compact structure and high dredging efficiency. It can suck mud with large particle impurities and can perform mud suction from multiple angles and in multiple directions through manual control. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the front view of the present invention;

[0025] Figure 2 is the three-dimensional structure schematic diagram of the present invention;

[0026] Figure 3 is the exploded view of the water inlet mechanism;

[0027] Figure 4 is the structure schematic diagram of the water distribution mechanism;

[0028] Figure 5 is the structure schematic diagram of the jet flushing mechanism;

[0029] Figure 6 is the structure schematic diagram of the nozzles on the jet arm;

[0030] Figure 7 is the structure schematic diagram of the suction mechanism;

[0031] Figure 8 is the structure schematic diagram of the Venturi ejector;

[0032] Figure 9 is the structure schematic diagram of the support frame;

[0033] Figure 10 is the exploded view of the mud suction cup.

[0034] DESCRIPTION OF THE REFERENCE NUMERALS

[0035] 1. Water inlet mechanism, 11. Water pump, 12. Anti-sand diversion cover, 121. Water inlet, 13. Sediment settling tank, 14. Anti-sand net, 2. Water distribution mechanism, 21. Water tank, 211. First water distribution tank, 212. Second water distribution tank, 22. Water delivery pipe, 23. Water outlet pipe, 24. Rubber pressure buffer cylinder, 3. Jet flushing mechanism, 31. Jet arm, 311. Rotary bearing, 32. Nozzle, 321. Fixed nozzle, 322. Rotary nozzle, 3221. Vertical section, 3222. Inclined section, 33. Connecting rod, 34. First motor, 341. First gear, 342. Ring gear, 35. First sprocket, 36. Chain, 37. Second motor, 371. Second sprocket, 38. Chain cover plate, 4. Suction mechanism, 41. Venturi ejector, 411. Round pipe, 412. Conical suction pipe, 413. Throat pipe, 414. Jet pipe, 415. Water inlet pipe, 416. Mud suction pipe, 417. Hose, 42. Mud suction cup, 421. Round suction cup, 422. Mud outlet pipe, 423. Mud inlet, 424. Annular baffle, 4241. Opening, 425. Radial rod, 426. Rotary shaft, 427. Third motor, 4271. Second gear, 4272. Third gear, 43. Support frame, 431. Vertical rod, 432. Horizontal shaft, 433. Connecting rod, 434. Winch, 44. Confluence pipe, 441. Branch pipe, 442. Main pipe, 5. Camera. Detailed implementation manners

[0036] The following describes the specific implementation manners of the present invention in conjunction with the accompanying drawings and embodiments:

[0037] It should be noted that the structures, ratios, sizes, etc. schematically shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present invention. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should fall within the scope covered by the technical content disclosed in the present invention.

[0038] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope within which the present invention can be implemented.

[0039] Combined with the attached Figures 1-10, the present invention provides a dredging equipment mud jet flushing and suction device, which includes a water inlet mechanism 1 provided with a water pump 11. The water pump 11 is connected to the water tank 21 of the water distribution mechanism 2. The water tank 21 is respectively connected to a jet flushing mechanism 3 and a suction mechanism 4. The jet flushing mechanism 3 includes a jet arm 31 communicated with the water tank 21, and a nozzle 32 is arranged on the jet arm 31. The suction mechanism 4 includes a Venturi injector 41 communicated with the water tank 21. The negative pressure chamber of the Venturi injector 41 is connected to a mud suction cup 42. The mud suction cup 42 is installed below the water distribution mechanism 2 through a support frame 43.

[0040] In the above technical solution, the water pump 11 of the water inlet mechanism 1 sucks the water in the water area into the water tank 21 of the water distribution mechanism 2. The water in the water tank 21 respectively enters the jet arm 31 of the jet flushing mechanism 3 and the Venturi injector 41 of the suction mechanism 4. The water in the jet arm 31 is jetted out through the nozzle 32 to accurately flush the area to be dredged. The jet flushing causes little disturbance to the soil in the water area and can effectively protect the underwater ecology. The water entering the Venturi injector 41 is jetted out from the jet pipe 414 of the Venturi injector 41. The negative pressure chamber of the Venturi injector 41 is communicated with the mud suction cup 42, which can make the mud suction cup 42 generate suction, suck the mud loosened by the jet arm 32 into the mud suction cup 42, and then enter the Venturi injector 41. After mixing with water, it is jetted out from the jet pipe 414 of the Venturi injector 41. Connect the jet pipe 414 of the Venturi injector 41 to a mud delivery pipe, and the jetted mud can be transported to the target area. The Venturi injector 41 can directly adopt commercially available products. Its basic structure includes an inlet pipe 415 for fluid to enter, a jet pipe 414 for jetting out the fluid, and a negative pressure chamber capable of generating suction force. In the prior art, the Venturi injector 41 can be divided into a central jet pump, an annular jet pump, and a multi-nozzle jet pump according to its structure. The present invention preferably adopts an annular jet pump structure suitable for sucking sewage and mud containing solid particles.

[0041] In a specific technical solution, the water inlet mechanism 1 further includes a sand-proof diversion cover 12 communicated with the water inlet end of the water pump 11. A sedimentation tank 13 for sediment is detachably arranged at the bottom of the sand-proof diversion cover 12. An inlet 121 is vertically arranged on the side facing the water pump 11. A sand-proof net 14 is arranged on the inlet 121. The inlet 121 extends upward above the water pump 11, and the sedimentation tank 13 for sediment extends downward below the water pump 11.

[0042] In the above technical solution, the area to be dredged is located below the water pump 11, and the water inlet 121 of the sand prevention and diversion cover 12 extends upward above the water pump 11. Therefore, it can block the sediment disturbed and floated below the water pump 11 from entering the water inlet 121, forming a primary sand prevention structure. A sand prevention net 14 capable of filtering sediment is arranged at the water inlet 121 of the sand prevention and diversion cover 12, forming a secondary sand prevention structure. A sediment settling tank 13 extending downward below the water pump 11 is arranged at the bottom of the sand prevention and diversion cover 12, which can make the sediment sucked into the sand prevention and diversion cover 12 settle under the action of gravity, preventing the sediment from entering the water pump 11, forming a tertiary sand prevention structure. The design of the tertiary sand prevention structure can effectively prevent the sediment in the water area from being sucked into the water pump 11, prevent the blockage of the water pump 11 and the suction mechanism 4, improve the service life of the equipment, and reduce the maintenance cost. In this embodiment, the sand prevention and diversion cover 12 is an arc-shaped cover body, and its arc surface is arranged on the side away from the water pump 11. Water can be sucked into the sand prevention and diversion cover 12 from the direction parallel to the water pump 11 and enter the water pump 11 after being diverted by the arc surface of the sand prevention and diversion cover 12.

[0043] In a specific technical solution, the water tank 21 includes a cylindrical first sub-water tank 211 and a second sub-water tank 212 that are parallel and horizontally arranged. The water distribution mechanism 2 is provided with two water delivery pipes 22 that connect the first sub-water tank 211 and the second sub-water tank 212 in parallel. An outlet pipe 23 connected to the Venturi injector 41 is arranged on the second sub-water tank 212. The first sub-water tank 211 is respectively connected to the water pump 11 and the jet arm 31. The water pump 11 is arranged in parallel between the two water delivery pipes 22. A rubber pressure buffer cylinder 24 connected to it is arranged on one side of the first sub-water tank 211 opposite to the water pump 11.

[0044] In the above technical solution, the first sub-water tank 211, the second sub-water tank 212 and the two water delivery pipes 22 can form a rectangular frame structure. The water pump 11, the sand prevention and diversion cover 12 and the sediment settling tank 13 are exactly located within the frame structure, making the equipment structure compact and having good operation stability; both the first sub-water tank 211 and the second sub-water tank 212 are cylindrical, which can reduce the moving resistance of the equipment in the water; the rubber pressure buffer cylinder 24 connected to the first sub-water tank 211 can play a role in pressure buffering, prevent damage to the equipment caused by too fast water inlet flow rate and too large pressure, and improve the service life of the equipment.

[0045] In a specific technical solution, two jet arms 31 capable of rotating around the axis of the first water distribution tank 211 are symmetrically arranged at both axial ends of the first water distribution tank 211. The jet arms 31 are in an L shape. The vertical section extends along the radial direction of the first water distribution tank 211 and is rotatably connected to the first water distribution tank 211. The horizontal section extends towards the second water distribution tank 212 and is provided with nozzles 32. A connecting rod 33 is arranged between the two jet arms 31. A first motor 34 is arranged on the first water distribution tank 211. A first gear 341 is arranged on the rotating shaft of the first motor 34. A toothed ring 342 meshing with the first gear 341 is arranged on one of the jet arms 31.

[0046] In the above technical solution, there are two jet arms 31, which are respectively arranged at both axial ends of the first water distribution tank 211, capable of improving the flushing efficiency. The jet arms 31 are rotatably connected to the first water distribution tank 211, and the two jet arms 31 are connected by a connecting rod 33 and can rotate synchronously. In this embodiment, a rotary bearing 311 is arranged at the butt joint of the vertical section of the jet arm 31 and the first water distribution tank 211, capable of reducing the rotation resistance. Driven by the first motor 34, the first gear 341 rotates, driving the toothed ring 342 meshing with it to rotate. The toothed ring 342 drives the two jet arms 31 to rotate in a plane parallel to both axial ends of the first water distribution tank 211, and the flushing angle can be flexibly adjusted for precise flushing, minimizing the disturbance of the flushing to the soil in the water area.

[0047] In a specific technical solution, the nozzle 32 includes a fixed nozzle 321 arranged at the end of the jet arm 31 and a plurality of rotary nozzles 322 rotatably arranged along the length direction at the bottom of the jet arm 31. The rotary nozzle 322 includes a vertical section 3221 and an inclined section 3222 with an included angle greater than 90 degrees. The vertical section 3221 is rotatably connected to the jet arm 31 and is provided with a first sprocket 35. A chain 36 meshing with the first sprocket 35 and a second motor 37 are arranged at the bottom of the jet arm 31. A second sprocket 371 meshing with the chain 36 is arranged on the rotating shaft of the second motor 37.

[0048] In the above technical solution, the vertical section 3221 of the rotary nozzle 322 is perpendicular to the jet arm 31. A plurality of rotary nozzles 322 can rotate synchronously under the drive of the second motor 37, making the water outlet ends of the rotary nozzles 322 face the area to be flushed uniformly, playing a role of multi-angle jet flushing. During operation, the nozzle 32 is moved to the position to be flushed for precise flushing, reducing the disturbance to the soil in the water area. In this embodiment, ten rotary nozzles 322 are equidistantly arranged along the length direction of the jet arm 31. The fixed nozzle 321 is a long strip-shaped one that tilts upwards. A chain cover plate 38 is arranged at the bottom of the jet arm 31 to cover the chain 36, the first sprocket 35, and the second sprocket 371 inside the chain cover plate 38 to further protect the chain drive mechanism.

[0049] In a specific technical solution, a plurality of Venturi ejectors 41 and water outlet pipes 23 are correspondingly provided. The branch pipes 441 of the confluence pipe 44 are connected to the injection pipes 414 of the Venturi ejectors 41, and the main pipe 442 is connected to the mud delivery pipe.

[0050] In the above technical solution, a plurality of water outlet pipes 23 of the second water separation tank 212 and Venturi ejectors 41 are correspondingly arranged. The suction force of the mud suction cup 42 can be enhanced by increasing the number of Venturi ejectors 41. The mud ejected by a plurality of Venturi ejectors 41 is aggregated through the confluence pipe 44, and then the mud is discharged to the target position through the mud delivery pipe. In this embodiment, both the Venturi ejector 41 and the water outlet pipe 23 are arranged in three.

[0051] In a specific technical solution, the Venturi ejector 41 includes a circular pipe 411, a tapered suction pipe 412 that gradually narrows, a throat pipe 413, and a tapered injection pipe 414 that gradually expands, which are connected in sequence. The top of the circular pipe 411 is provided with a water inlet pipe 415 communicating with the water outlet pipe 23. One end close to the second water separation tank 212 is hermetically butted with a mud suction pipe 416. One end of the mud suction pipe 416 extends into the tapered suction pipe 412 and forms an annular cavity with the circular pipe 411, and the other end is provided with a hose 417 communicating with the mud suction cup 42. The inside of the tapered suction pipe 412 is a negative pressure cavity.

[0052] In the above technical solution, the Venturi ejector 41 adopts an annular jet pump structure. Based on the traditional annular jet pump structure, while ensuring the suction capacity, the structure of the Venturi ejector 41 is optimized in the present invention. The water outlet pipe 23 of the second water separation tank 212 is connected to the water inlet pipe 415 of the Venturi ejector 41 in the form of a flange to provide working fluid for the Venturi ejector 41. The mud suction pipe 416 is connected to the hose 417. The mud suction cup 42 sucks mud by relying on the negative pressure generated by the tapered suction pipe 412. The injection pipe 414 is the outlet of the mixed fluid of the sucked mud and the working fluid.

[0053] In a specific technical solution, the support frame 43 includes vertical rods 431 respectively arranged on the water delivery pipe 22 and the water outlet pipe 23, and a winch 434 arranged at the bottom of the water pump 11. The towing rope of the winch 434 is connected to the mud suction cup 42. The bottom of the vertical rod 431 is rotatably provided with a horizontal shaft 432. A connecting rod 433 hinged to the mud suction cup 42 is arranged on the horizontal shaft 432. The two horizontal shafts 432 are located in the same horizontal plane, and the two connecting rods 433 and the towing rope are located in the same vertical plane. A camera 5 is arranged at the bottom of the winch 434.

[0054] In the above technical solution, the winch 434 is controlled to wind and unwind the towing rope to control the movement of the mud suction cup 42 within a certain range. The two horizontal shafts 432 are located in the same horizontal plane, and the two connecting rods 433 and the towing rope are located in the same vertical plane, which can ensure that the mud suction cup 42 always maintains a horizontal position when moving under the control of the winch 434. In this embodiment, a total of four vertical rods 431 are provided. The two ends of one horizontal shaft 432 are symmetrically provided with vertical rods 431 respectively, which can further improve the connection stability.

[0055] In a specific technical solution, the mud suction cup 42 includes a hollow circular suction cup 421. A mud discharge pipe 422 communicating with the negative pressure chamber of the Venturi injector 41 is provided at the top of the circular suction cup 421, and a plurality of mud inlets 423 are provided at equal intervals in the circumferential direction of the side wall.

[0056] In a specific technical solution, a ring-shaped baffle 424 is rotatably provided on the inner side wall of the circular suction cup 421. An opening 4241 corresponding to the mud inlet 423 is provided on the ring-shaped baffle 424. A plurality of radial rods 425 are provided at equal intervals in the circumferential direction of the inner side wall of the ring-shaped baffle 424. The radial rods 425 are connected to a rotating shaft 426 coaxial with the ring-shaped baffle 424. A third motor 427 for driving the rotation of the rotating shaft 426 is provided at the top of the circular suction cup 421.

[0057] In the above technical solution, the third motor 427 drives the ring-shaped baffle 424 to rotate, so that the opening 4241 of the ring-shaped baffle 424 is aligned with one mud inlet 423, and the remaining mud inlets 423 are blocked at the same time. During operation, the ring-shaped baffle 424 is driven to rotate, and its opening 4241 is rotated to the area to be sucked, which can play a role in concentrating the suction force and increasing the suction efficiency. In this embodiment, the two connecting rods 433 of the support frame 43 are located on the diameter line of the circular suction cup 421. In order to avoid interference, the third motor 427 is arranged offset from the central axis of the circular suction cup 421. Therefore, a second gear 4271 is provided at the output end of the third motor 427, and a third gear 4272 meshing with the second gear 4271 is provided on the rotating shaft 426 to realize the rotation of the rotating shaft 426. If the third motor 427 is arranged at the central axis position of the circular suction cup 421 and will not interfere with the connecting rod 433, the output end of the third motor 427 can be directly connected to the rotating shaft 426.

[0058] The working principle and working process of the present invention are as follows:

[0059] Connect the electrical components on the water inlet mechanism 1, the water distribution mechanism 2, the jet flushing mechanism 3, the suction mechanism 4 and the camera 5 to the controller, and monitor the key parameters such as water flow distribution, flushing angle, and suction strength in real time, and adjust according to the actual situation to ensure the high efficiency and environmental protection of the dredging operation;

[0060] Place the mud jet flushing and suction device in the water area to be dredged. The water pump 11 of the water inlet mechanism 1 sucks the water in the water area. The water enters the anti-sand diversion cover 12 from the water inlet 121 of the anti-sand diversion cover 12. The water inlet 121 of the anti-sand diversion cover 12 extends upward above the water pump 11, away from the jet flushing area below the water pump 11, which can prevent the sediment disturbed and floated below the water pump 11 from entering the water inlet 121, forming a primary anti-sand structure. The anti-sand net 14 arranged at the water inlet 121 can filter the sediment in the water, forming a secondary anti-sand structure. A small amount of sediment sucked into the anti-sand diversion cover 12 settles under the action of gravity and enters the sediment settling tank 13, preventing the sediment from entering the water pump 11, forming a tertiary anti-sand structure. The design of the tertiary anti-sand structure can effectively prevent the sediment in the water area from being sucked into the water pump 11, improving the service life of the equipment and reducing the maintenance cost;

[0061] The water pump 11 transports the water into the water tank 21 of the water distribution mechanism 2. The water first enters the first water distribution tank 211 connected to the water pump 11. The rubber pressure buffer cylinder 24 on the first water distribution tank 211 can play a role in pressure buffering, preventing the equipment from being damaged due to too fast water inlet flow rate and too large pressure, and improving the service life of the equipment. The water in the first water distribution tank 211 enters the two jet arms 31 of the jet flushing mechanism 3 from the water distribution ports at both ends, enters the second water distribution tank 212 through the two water delivery pipes 22, and enters the Venturi ejector 41 of the suction mechanism 4 through the water outlet pipe 23 of the second water distribution tank 212, supplying water to the jet flushing mechanism 3 and the suction mechanism 4 at the same time;

[0062] The two jet arms 31 of the jet flushing mechanism 3 are connected by a connecting rod 33. Driven by the first motor 34, they can rotate synchronously in a plane parallel to the axial two ends of the first water distribution tank 211, enabling the nozzles 32 on the jet arms 31 to rotate in multiple dimensions; The second motors 37 on the two jet arms 31 can control the chain 36, the first sprocket 35 and the second sprocket 371 to rotate in coordination to ensure that the rotating nozzles 322 are synchronously adjusted to a predetermined angle;

[0063] Monitor the rotation of the jet arm 31 and the nozzle 32 through the camera 5 to achieve the purpose of accurate jetting at multiple angles, making the water flow sprayed by the nozzle 32 accurately aim at the area to be dredged, effectively jetting and stripping the high-concentration and viscous mud, and minimizing the disturbance to the seabed soil;

[0064] In the suction mechanism 4, the negative pressure chamber of the Venturi injector 41 provides suction force for the mud suction cup 42. A plurality of mud inlets 423 are equidistantly arranged on the circumferential side wall of the circular suction cup 421 of the mud suction cup 42. The third motor 427 drives the annular baffle 424 to rotate, so that the opening 4241 of the annular baffle 424 is aligned with the mud inlet 423 at the silt accumulation position, improving the suction efficiency; the mud suction cup 42 is installed below the water distribution mechanism 2 through the support frame 43, and the mud suction cup 42 is controlled to move within a certain range by controlling the winding and unwinding of the traction rope on the winch 434;

[0065] The jet flushing mechanism 3 and the suction mechanism 4 work together. The jet flushing mechanism 3 first disturbs and strips the mud, and the suction mechanism 4 immediately follows for efficient suction, realizing energy-saving, environmental protection, convenience and high-efficiency mud suction.

[0066] The above embodiments are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. A dredging equipment mud spraying and suction device, characterized in that: The invention comprises a water inlet mechanism (1) provided with a water pump (11), the water pump (11) being connected to a water tank (21) of a water distribution mechanism (2), the water tank (21) being respectively connected to a jet spray mechanism (3) and a suction mechanism (4), the jet spray mechanism (3) comprising a jet arm (31) connected to the water tank (21), the jet arm (31) being provided with a nozzle (32), the suction mechanism (4) comprising a venturi ejector (41) connected to the water tank (21), the negative pressure chamber of the venturi ejector (41) being connected to a mud suction disc (42), the mud suction disc (42) being installed below the water distribution mechanism (2) via a support frame (43).

2. A dredging equipment mud spraying and suction device according to claim 1, characterized in that: The water inlet mechanism (1) further comprises a sand-proof flow deflector (12) connected to the water inlet end of the water pump (11); a silt sedimentation tank (13) is detachably provided at the bottom of the sand-proof flow deflector (12); a water inlet (121) is vertically provided on the side facing the water pump (11); a sand-proof net (14) is provided on the water inlet (121); the water inlet (121) extends above the water pump (11); and the silt sedimentation tank (13) extends below the water pump (11).

3. A dredging equipment mud spraying and suction device according to claim 2, characterized in that: The water tank (21) comprises a first water distribution tank (211) and a second water distribution tank (212) which are arranged in parallel and horizontally in a cylindrical shape. The water distribution mechanism (2) is provided with two water delivery pipes (22) in parallel which are in communication with the first water distribution tank (211) and the second water distribution tank (212). The second water distribution tank (212) is provided with a water outlet pipe (23) in communication with the Venturi ejector (41). The first water distribution tank (211) is respectively in communication with the water pump (11) and the jet arm (31). The water pump (11) is arranged in parallel between the two water delivery pipes (22). A rubber pressure buffer cylinder (24) in communication with the water pump (11) is provided on a side of the first water distribution tank (211) which is opposite to the water pump (11).

4. A dredging equipment mud jetting and suction device according to claim 3, characterized in that: Two jet arms (31) rotatable around the axis of the first water distribution tank (211) are symmetrically arranged at both axial ends of the first water distribution tank (211); the jet arms (31) are L-shaped, with a vertical section extending radially along the first water distribution tank (211) and rotatably connected to the first water distribution tank (211); a horizontal section extending in the direction of the second water distribution tank (212) and provided with a nozzle (32); a connecting rod (33) is arranged between the two jet arms (31); a first motor (34) is arranged on the first water distribution tank (211); a first gear (341) is arranged on the rotating shaft of the first motor (34); and a gear ring (342) meshing with the first gear (341) is arranged on one of the jet arms (31).

5. A dredging equipment mud jetting and suction device according to claim 4, characterized in that: The nozzle (32) comprises a fixed nozzle (321) arranged at the end of the jet arm (31) and a plurality of rotating nozzles (322) rotatably arranged at the bottom of the jet arm (31) along the length direction; the rotating nozzle (322) comprises a vertical section (3221) and an inclined section (3222) with an included angle greater than ninety degrees; the vertical section (3221) is rotatably connected to the jet arm (31) and is provided with a first sprocket (35); a chain (36) meshed with the first sprocket (35) and a second motor (37) are provided at the bottom of the jet arm (31); a second sprocket (371) meshed with the chain (36) is provided on the rotating shaft of the second motor (37).

6. A dredging equipment mud jetting and suction device according to claim 5, characterized in that: The Venturi ejector (41) and the water outlet pipe (23) are provided with a plurality of them correspondingly, the branch pipe (441) of the confluence pipe (44) is connected to the ejection pipe (414) of the Venturi ejector (41), and the main pipe (442) is connected to the mud conveying pipe.

7. A dredging equipment mud jetting and suction device according to claim 6, characterized in that: The venturi ejector (41) comprises a circular tube (411), a gradually converging conical suction pipe (412), a throat (413) and a gradually expanding conical ejection pipe (414) which are connected in sequence. A water inlet pipe (415) which is connected to a water outlet pipe (23) is provided at the top of the circular tube (411). A mud suction pipe (416) which is sealed and connected to one end of the circular tube (411) close to the second water distribution tank (212) is provided. One end of the mud suction pipe (416) extends into the conical suction pipe (412) and forms an annular cavity with the circular tube (411). The other end of the circular tube is provided with a hose (417) which is connected to a mud suction plate (42). The interior of the conical suction pipe (412) is a negative pressure cavity.

8. A dredging equipment mud jetting and suction device according to claim 7, characterized in that: The support frame (43) comprises vertical rods (431) respectively arranged on the water supply pipe (22) and the water outlet pipe (23) and a winch (434) arranged at the bottom of the water pump (11); the traction rope of the winch (434) is connected to the mud suction plate (42); a horizontal axis (432) is rotatably provided at the bottom of the vertical rod (431); a connecting rod (433) hinged to the mud suction plate (42) is provided on the horizontal axis (432); the two horizontal axes (432) are located in the same horizontal plane; the two connecting rods (433) and the traction rope are located in the same vertical plane; and a camera (5) is provided at the bottom of the winch (434).

9. A dredging equipment mud jetting and suction device according to claim 8, characterized in that: The mud suction cup (42) comprises a hollow circular suction cup (421), the top of which is provided with a mud outlet pipe (422) connected to the negative pressure chamber of the Venturi ejector (41), and a plurality of mud inlets (423) are equidistantly arranged on the circumference of the side wall.

10. A dredging equipment mud jetting and suction device according to claim 9, characterized in that: The inner wall of the circular suction cup (421) is rotatably provided with an annular baffle (424), and the annular baffle (424) is provided with an opening (4241) corresponding to the mud inlet (423). The inner wall of the annular baffle (424) is equidistantly provided with a plurality of radial rods (425), and the radial rods (425) are connected to a rotating shaft (426) coaxial with the annular baffle (424). A third motor (427) for driving the rotating shaft (426) to rotate is provided on the top of the circular suction cup (421).

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