A ship-mounted sand transfer hopper based on efficient mixing of mud and water body and a use method thereof

Abstract

This invention discloses a marine sand transfer hopper based on efficient mixing of mud, sand, and water, and its usage method, belonging to the field of sand transfer hopper technology. The marine sand transfer hopper based on efficient mixing of mud, sand, and water includes a conical hopper, and further includes: a square receiving hopper fixed to the upper side of the conical hopper; multiple guide plates equidistantly arranged on the inclined inner wall of the square receiving hopper; a grid frame fixed inside the conical hopper and the square receiving hopper; and a material pipe fitting including an inlet pipe and an outlet pipe located on the lower side of the conical hopper. This invention drives a stirring component to perform reverse rotation and axial reciprocating motion to powerfully break up sand clumps, achieving three-dimensional mixing. Simultaneously, it drives the guide plates to periodically oscillate, effectively preventing sand from sticking to the wall or forming material arches. This integrates receiving, impurity removal, anti-clogging, and efficient mixing, significantly improving operational efficiency and reliability.

Description

Technical Field

[0001] This invention relates to the field of sand transfer bucket technology, and in particular to a marine sand transfer bucket based on efficient mixing of mud and sand with water and its usage method. Background Technology

[0002] Land reclamation is primarily accomplished using dredgers, with trailing suction hopper dredgers and cutter suction dredgers being the main types in the industry. However, the shallow draft of the construction area makes it difficult for trailing suction hopper dredgers and cutter suction dredgers to enter, and the cost of using dredgers for dredging operations is relatively high. To adapt to the diversity of projects and meet project needs, cutter suction dredgers are often modified. Due to national environmental protection requirements and resource extraction controls, using overseas sand sources or manufactured sand transported to the project site via belt conveyor has become a new method of supplying materials for land reclamation. The modification of cutter suction dredgers mainly involves removing the original cutter head and its drive system, and adding a sand hopper device to the front end of the underwater pump on the bridge frame to collect sand and achieve sand-water mixing, which is then pressure-transported through water pipelines to a discharge point several kilometers away.

[0003] Currently, most common marine sand transfer buckets are simple conical structures, which present several problems in practical applications. First, in the receiving stage, the opening area at the top of traditional conical sand buckets is limited. Secondly, the wide drop-off range on conveyor belts means that a considerable amount of sand cannot fall into the bucket and spills directly onto the deck or into the water, causing material loss, environmental pollution, and increased cleaning workload. Second, in the mixing stage, many sand buckets rely solely on water flow through the bottom of the cone for simple mixing. This method has limited mixing capabilities, especially for sand with uneven particle size. After mixing with water and dust impurities, it easily adheres and accumulates on the bucket wall, creating dead zones in the mixing area and forming insufficiently dispersed "mud cores" or clumps. These clumps easily settle during pipeline transport, causing blockages in the sludge discharge pipeline and leading to unplanned downtime, severely impacting operational efficiency and continuity. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a shipborne sand transfer bucket based on efficient mixing of mud and sand with water and its usage method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A marine sand transfer bucket based on efficient mixing of mud and sand with water includes a conical bucket and further includes: A square receiving hopper is fixed on the upper side of a conical hopper to increase the receiving area. The guide plates are provided in multiples and are equidistantly arranged on the inclined inner wall of the square receiving hopper; A grid frame, which is fixed inside a conical hopper and a square receiving hopper, is used to intercept large-volume debris; The material pipe fitting includes an inlet pipe and an outlet pipe disposed on the lower side of the conical hopper. The end of the inlet pipe away from the conical hopper is connected to a water supply line, and the end of the outlet pipe away from the conical hopper is connected to a sludge discharge line. And a mixing assembly, which is mounted on a grid frame to assist in the mixing of water and sand in the conical hopper.

[0006] Preferably, the grid frame includes a connecting pipe fixed between the inner walls of the two sides of the square receiving hopper and a mesh frame arranged on both sides of the connecting pipe, wherein the end of the mesh frame away from the connecting pipe is connected to the inner wall of the square receiving hopper and / or the conical hopper. The two space frames are arranged in an inverted V shape.

[0007] Preferably, the inner wall of the conical hopper is provided with a discharge trough at the mesh frame, the outer wall of the conical hopper is fixed with a receiving tray at the discharge trough, the inner wall of the receiving tray is fixed with a filter plate, the bottom inner wall of the receiving tray is set as an inclined surface, the receiving tray is connected to a return pipe at the lowest point of the bottom inclined surface, the return pipe is provided with a spiral conveying blade driven by a motor, and the upper opening of the return pipe is located on the upper side of the square receiving hopper; The inner wall of the conical bucket is fixed with a guide ring on the lower side of the grid frame. The guide ring has an upper inclined surface for sand falling and a lower inclined surface for limiting the upward flow of mud-water mixture on both sides.

[0008] Preferably, the stirring assembly includes a drive shaft rotatably disposed within the connecting pipe, a main bevel gear fixedly disposed on the drive shaft, a stirring shaft rotatably disposed between the connecting pipe and the inner wall of the bottom of the conical hopper, a stirring component disposed on the stirring shaft, and a secondary bevel gear disposed on the stirring shaft and meshing with the main bevel gear. A motor housing is fixedly installed on the outside of the square receiving hopper, and a drive motor for driving the drive shaft to rotate is fixedly installed inside the motor housing.

[0009] Preferably, an eccentric shaft is provided on the drive shaft, a swing rod is sleeved on the eccentric shaft, and a connecting rod that is slidably connected to the end of the swing rod away from the eccentric shaft is connected to the connecting pipe. The connecting rod is connected to the stirring component. The stirring component includes a connecting ring fixedly connected to the connecting rod, a sleeve rotatably connected to the connecting ring and slidably disposed with the keyway of the stirring shaft, and stirring blades disposed on the sleeve.

[0010] Preferably, top rods are fixed on both sides of the connecting ring, and the end of the top rod away from the connecting ring moves against the bottom wall of the grid frame.

[0011] Preferably, the guide plate is rotatably mounted on the inner wall of the square receiving hopper via a pin shaft, and each of the four inclined side walls of the square receiving hopper is slidably connected to a sliding rod. Several ball heads are equidistantly arranged on the sliding rod, and each ball head is fixedly provided with a connecting rod. Each connecting rod is slidably connected to the bottom of a guide plate.

[0012] Preferably, protective shells are fixed at two corners of the square receiving hopper. A transmission rod is rotatably connected inside each protective shell. A reciprocating screw is fixed at one end of the transmission rod. A sleeve that is slidably connected to the protective shell is threaded onto the reciprocating screw. Two movable rods are hinged to the sleeve by a pin. One movable rod is hinged to one of the sliding rods at the junction of the adjacent side wall of the square receiving hopper, and the other movable rod is hinged to another sliding rod at the same junction of the square receiving hopper.

[0013] Preferably, a worm gear is fixed on the shaft body outside the square receiving hopper, the transmission rod is provided with a worm wheel that meshes with the worm gear, and a housing is provided on the outer wall of the square receiving hopper at the meshing point of the worm gear and the worm wheel for protection.

[0014] This invention also discloses a method for using a marine sand transfer bucket based on efficient mixing of mud and sand with water, which further includes the following steps: S1: Preparation Phase Secure the sand bucket to the ship, connect the water inlet pipe to the feed pipe, and the sludge discharge pipe to the discharge pipe; Start the motor and check whether the mixing assembly, the guide plate swing, and the spiral conveyor blades in the return pipe are operating normally. S2: Sand receiving and pretreatment stage: The sand is conveyed from the belt conveyor on the conveyor boat to the top of the sand bucket, and then falls into the square receiving hopper. The increased square receiving area reduces the sand spillage rate. The falling sand first passes through the grid frame, whose inverted V-shaped design intercepts large debris. The intercepted debris slides along the inclined mesh surface to the bucket wall and is discharged through the discharge chute to the receiving tray. The filter plate in the receiving tray filters the sand that falls with the debris. The sand passes through the filter plate and falls to the bottom of the tray. After being collected on the inclined surface, it is lifted by the spiral conveyor blades in the return pipe and sent back to the top of the square receiving hopper, completing the automatic recovery of useful sand. The debris remains in the receiving tray for subsequent centralized cleaning. S3: High-efficiency mixing and dynamic anti-blocking stage: Water inlet and vortex formation: Pressurized water is injected into the bottom of the conical hopper through the water supply line via the feed pipe. The water flow is designed to enter at a tangential angle, forming a powerful basic vortex inside the conical hopper. Active stirring enhances mixing: The drive motor drives the drive shaft to rotate, and through the meshing transmission between bevel gears, it drives the stirring shaft and the stirring components on it to rotate. By controlling the direction of the drive motor, the rotation direction of the stirring blades can be made opposite to the natural vortex, thereby generating shear force, breaking up sand clumps, and breaking up the natural stratification of the slurry. Axial dynamic stirring: The eccentric shaft on the drive shaft drives the swing rod to move, which in turn drives the connecting rod to move up and down relative to the connecting pipe. This causes the entire stirring component to move up and down axially along the stirring shaft. The stirring blades can not only cut the flow field radially, but also promote the circulation of materials in the vertical direction, forming three-dimensional stirring and preventing bottom sedimentation and surface separation. Dynamic anti-arching of the guide plate: The drive shaft drives the transmission rod and reciprocating screw to rotate simultaneously through the worm and worm wheel. The sleeve makes linear reciprocating motion on the reciprocating screw, and pushes the sliding rod at the corner of the square receiving hopper to slide back and forth through the movable rod. The sliding rod drives the guide plate to swing synchronously and periodically at a small angle through the ball head and connecting rod, which can break the "material arch" formed by sticky sand and ensure that the sand slides into the mixing zone below continuously and smoothly. S4: Slurry discharge and operation completion: The sand and water form a mixed slurry under the combined action of eddy current and stirring, which is pumped from the discharge pipe to the designated area through the sludge discharge pipeline; After the operation is completed, keep the water intake and agitation running for a short time to rinse, and then turn off all equipment.

[0015] Compared with the prior art, the present invention provides a marine sand transfer bucket based on efficient mixing of mud and sand with water and its usage method, which has the following beneficial effects: 1. In this invention, by fixing a square receiving hopper at the top of the conical hopper, the receiving area is significantly increased. The falling sand first passes through the inverted V-shaped grid frame, whose inclined grid frame intercepts large-volume debris and guides it to the discharge chute on the side of the hopper wall, thus avoiding affecting the sand discharge rate. The debris finally falls into the receiving tray with a filter plate. The sand carried out with the debris is separated by the filter plate and automatically sent back to the sand hopper through the spiral conveying blades in the return pipe. This achieves automatic separation of debris and 100% recovery of useful sand, fundamentally overcoming the spillage and waste and environmental pollution during the sand receiving process, and preventing debris from entering the mixing system and damaging the equipment.

[0016] 2. In this invention, by controlling the direction of the motor, the stirring blades can move in the opposite direction to the natural vortex formed by the incoming water, generating a strong shearing force to break up the mud. At the same time, the eccentric shaft on the drive shaft drives the entire stirring component to move up and down along the stirring shaft axis through the swing rod and connecting rod, forming a three-dimensional stirring. The lower inclined surface of the guide ring can effectively suppress the upward surge of slurry, stabilize the flow field, and ensure the mixing effect. Through the combined effect of active stirring and water vortex, ultra-uniform mixing of sand and water is achieved, effectively eliminating mixing dead corners and bottom siltation. This solves the problems of uneven mixing, easy generation of "mud cores" and siltation caused by the reliance on natural vortex in traditional sand hoppers, as well as the risk of pipe blockage caused by this.

[0017] 3. In this invention, while driving the stirring assembly, the worm gear on the drive shaft drives the worm wheel and the reciprocating screw to rotate, causing the sleeve to move linearly back and forth. This, in turn, pushes the slide bar to slide back and forth through the movable rod. The slide bar drives all the guide plates to swing periodically and synchronously through the ball head and connecting rod. This successfully solves the problem in the prior art that when encountering highly viscous and easily caking sand, the sand may not slide smoothly on the fixed plate, but instead forms an "arch" or accumulates. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the transfer sand hopper with the return pipe installed according to the present invention; Figure 4 This is a schematic diagram of the separation structure of the square receiving hopper and the conical hopper of the present invention; Figure 5 This is a schematic cross-sectional view of the conical bucket of the present invention; Figure 6 for Figure 5 Enlarged structural diagram of section A in the middle; Figure 7 for Figure 5 Enlarged structural diagram of section B; Figure 8 This is a cross-sectional structural diagram of the connecting pipe of the present invention; Figure 9 This is a schematic diagram of the external structure of the drive motor of the present invention; Figure 10 This is a schematic diagram of the external structure of the guide plate of the present invention; Figure 11 This is a schematic diagram of the structure at the corner of the square receiving hopper of the present invention.

[0019] In the diagram: 1. Conical hopper; 101. Feed pipe; 102. Discharge pipe; 103. Discharge trough; 2. Square receiving hopper; 3. Guide plate; 4. Grille frame; 401. Connecting pipe; 402. Mesh frame; 5. Receiving tray; 501. Filter plate; 6. Return pipe; 7. Drive shaft; 701. Main bevel gear; 702. Stirring shaft; 703. Stirring component; 7031. Connecting ring; 7032. Sleeve; 7033. Stirring blades; 704. Secondary bevel gear; 8. Motor housing; 801. Drive motor; 9. Eccentric shaft; 901. Swing rod; 902. Connecting rod; 10. Push rod; 11. Slide rod; 111. Ball head; 112. Connecting rod; 12. Protective shell; 121. Transmission rod; 122. Reciprocating lead screw; 123. Sleeve; 124. Moving rod; 13. Worm gear; 131. Worm wheel; 14. Guide ring; 141. Upper inclined surface; 142. Lower inclined surface. Detailed Implementation

[0020] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, this embodiment proposes a marine transfer sand hopper based on efficient mixing of mud, sand, and water. It includes a conical hopper 1, and further comprises: a square receiving hopper 2, guide plates 3, a grid frame 4, material pipe fittings, and a mixing assembly. The square receiving hopper 2 is fixed to the upper side of the conical hopper 1 to increase the receiving area. Multiple guide plates 3 are equidistantly arranged on the inclined inner wall of the square receiving hopper 2. The grid frame 4 is fixed inside the conical hopper 1 and the square receiving hopper 2 to intercept large-volume debris. The material pipe fittings include an inlet pipe 101 and an outlet pipe 102 located on the lower side of the conical hopper 1. The end of the inlet pipe 101 away from the conical hopper 1 is connected to a water supply line, and the end of the outlet pipe 102 away from the conical hopper 1 is connected to a mud discharge line. The mixing assembly is located on the grid frame 4 to assist in the mixing of water and sand within the conical hopper 1. Specifically, sand is conveyed from the conveyor belt on the conveyor boat to the top of the sand bucket, and then falls into the square receiving hopper 2. The increased square receiving area effectively catches the falling sand, solving the problem of sand not being caught and spilling out of the hopper due to the limited opening at the top of the traditional pure conical sand hopper. This improves receiving efficiency and reduces material loss and environmental pollution. The guide plate 3 guides and buffers the falling sand, making it fall more evenly. As the sand continues to fall and passes through the grid frame 4, large-volume impurities such as stones and plastics are intercepted on the grid, while qualified sand passes through the gaps in the grid and enters the main space of the conical hopper 1 below. The external water supply system... Pressurized water is injected into the bottom of the conical hopper 1 through the feed pipe 101. The water flow mixes initially with the falling sand and forms a vortex. At the same time, the stirring component set on the grid frame 4 is activated to mechanically stir the mixture of sand and water in the conical hopper 1, making it more uniform. The uniform slurry formed after thorough mixing is discharged from the discharge pipe 102 and enters the external sludge discharge pipeline. The independent stirring component provides active mechanical hybrid power, which, combined with the vortex disturbance formed by the water entering from the feed pipe 101, works together to ensure that the sand and water are mixed more thoroughly and uniformly, avoiding natural settling and mixing dead zones, and significantly reducing the risk of clogging of the discharge pipe due to uneven mixing.

[0024] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, in a preferred embodiment, based on the above method, the grid frame 4 further includes a connecting pipe 401 fixed between the inner walls of the two sides of the square receiving hopper 2 and a mesh frame 402 arranged on both sides of the connecting pipe 401. The end of the mesh frame 402 away from the connecting pipe 401 is connected to the inner wall of the square receiving hopper 2 and / or the conical hopper 1. The two mesh frames 402 are set in an inverted V shape. The intercepted debris will slide and gather automatically to both sides of the slope under the influence of its own gravity, that is, at the connection between the mesh frame 402 and the bucket wall, instead of accumulating in the central area of ​​the grid. This reduces the accumulation range of debris from the entire grid surface to two clear linear areas, which greatly facilitates the subsequent centralized cleaning operation. It effectively solves the problems of scattered debris distribution, large cleaning area, and low efficiency of traditional flat grids. Even if some debris accumulates, it is mainly located on both sides and will not quickly cause the entire grid to be blocked. The sand can still fall smoothly through the center of the grid and the unblocked area, which significantly reduces the risk of the grid being completely blocked and improves the continuity and reliability of the sand bucket when handling sand containing debris. It should be noted that the inner wall of the conical hopper 1 is provided with a discharge trough 103 at the mesh frame 402, and the outer wall of the conical hopper 1 is fixed with a receiving plate 5 at the discharge trough 103. The inner wall of the receiving plate 5 is fixed with a filter plate 501. The bottom inner wall of the receiving plate 5 is set as an inclined surface. The receiving plate 5 is connected to a return pipe 6 at the lowest point of the bottom inclined surface. The return pipe 6 is provided with a spiral conveying blade driven by a motor. The upper opening of the return pipe 6 is located on the upper side of the square receiving hopper 2. A guide ring 14 is fixedly provided on the inner wall of the cone-shaped bucket 1 to the lower side of the grid frame 4. The guide ring 14 has an upper inclined surface 141 for sand falling and a lower inclined surface 142 for limiting the upward flow of mud-water mixture on both sides. Specifically, large debris intercepted by the grid frame 4 slides down its inclined surface, is discharged from the conical hopper 1 through the discharge chute 103, and falls into the externally fixed receiving tray 5. The sand discharged along with the debris falls onto the filter plate 501 of the receiving tray 5. A vibrating motor can be installed at the filter plate 501 as needed. Sand of the appropriate particle size passes through the holes of the filter plate 501 and falls onto the inclined bottom of the receiving tray 5. It is then collected by gravity to the lowest point of the inclined surface. The spiral conveying blades in the return pipe 6 are activated to transport the sand collected at the bottom upwards, and finally discharge it back into the square receiving tray through its upper opening. The material is positioned above the hopper 2, allowing it to fall back into the hopper. This solves the problem of waste and sand mixing in the traditional method, where useful sand is wasted along with the debris. It significantly improves resource utilization and prevents debris from accumulating in the hopper and affecting the effective volume. Normal sand falling from the grid frame 4 is guided by the upper inclined surface 141 of the guide ring 14 and smoothly enters the mixing zone at the bottom of the conical hopper 1. At the same time, the lower inclined surface 142 of the guide ring 14 acts as a barrier to prevent the violent liquid flow generated by stirring or water intake in the lower mixing zone from surging upwards and interfering with the screening operation at the grid frame 4.

[0025] like Figure 2 , Figure 5 , Figure 6 , Figure 8 and Figure 9As shown, in a preferred embodiment, based on the above method, the stirring assembly further includes a drive shaft 7 rotatably disposed in the connecting pipe 401, a main bevel gear 701 fixed on the drive shaft 7, a stirring shaft 702 rotatably disposed between the connecting pipe 401 and the inner wall of the bottom of the conical bucket 1, a stirring component 703 disposed on the stirring shaft 702, and a secondary bevel gear 704 disposed on the stirring shaft 702 and meshing with the main bevel gear 701. A motor housing 8 is fixedly installed on the outside of the square receiving hopper 2, and a drive motor 801 for driving the drive shaft 7 to rotate is fixedly installed inside the motor housing 8. Specifically, when the mixing component is working, the drive motor 801 is started, driving the drive shaft 7 to rotate. The main bevel gear 701 on the drive shaft 7 rotates accordingly. Through the secondary bevel gear 704 meshing with it, the horizontal rotational motion is converted into vertical rotational motion. The secondary bevel gear 704 drives the mixing shaft 702 and the mixing component 703 on it to rotate together around the vertical axis in the conical hopper 1, mixing the sand and water in the hopper. Compared with simply relying on water intake to form a vortex, the mixing intensity and range of action are significantly improved. It can effectively break up sand clumps, eliminate mixing dead zones, and ensure that the sand and water are mixed evenly. This fundamentally solves the technical problems of insufficient and unstable hybrid power of natural vortex mixing, providing a reliable guarantee for smooth pipeline transportation. Furthermore, by controlling the drive motor 801 to drive the mixing component 703 to slow down or rotate in the opposite direction relative to the vortex, the circulation effect of the vortex can be counteracted, improving the material mixing effect.

[0026] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 8 As shown, in a preferred embodiment, based on the above method, an eccentric shaft 9 is further provided on the drive shaft 7, and a swing rod 901 is sleeved on the eccentric shaft 9. The end of the swing rod 901 away from the eccentric shaft 9 is connected to a connecting rod 902 that is slidably connected to the connecting pipe 401. The connecting rod 902 is connected to the stirring component 703. The stirring component 703 includes a connecting ring 7031 fixedly connected to the connecting rod 902, a sleeve 7032 rotatably connected to the connecting ring 7031 and slidably disposed with the keyway of the stirring shaft 702, and stirring blades 7033 disposed on the sleeve 7032. Specifically, when the drive shaft 7 rotates, it drives the eccentric shaft 9 on it to perform circular motion. The circular motion of the eccentric shaft 9 is converted into the linear reciprocating motion of the connecting rod 902 through the swing rod 901. The connecting rod 902 moves up and down in the vertical direction relative to the connecting pipe 401. The up and down reciprocating motion of the connecting rod 902 is transmitted to the entire sleeve 7032 through the connecting ring 7031. Since the sleeve 7032 is connected to the stirring shaft 702 through the keyway, it can slide up and down along the axial direction of the stirring shaft 702 while rotating with the stirring shaft 702. This causes the stirring blades 7033 on it to perform axial reciprocating motion on the basis of rotation. The three-dimensional composite motion combining radial cutting and axial pushing can disturb the vortex fluid in the mixing container, break the layering and dead corners existing in traditional single rotation stirring, and achieve three-dimensional, dead-angle-free ultra-uniform mixing, effectively solving the mixing problem of viscous or easily sedimenting materials.

[0027] like Figure 5 and Figure 6 As shown, in a preferred embodiment, based on the above method, further, top rods 10 are fixed on both sides of the connecting ring 7031, and the end of the top rod 10 away from the connecting ring 7031 moves against the bottom wall of the grid frame 4; specifically, when the drive shaft 7 drives the connecting ring 7031 to make up-and-down reciprocating linear motion through the eccentric shaft 9 and the connecting rod 902, the top rods 10 fixed on both sides of the connecting ring 7031 also make up-and-down reciprocating motion synchronously. During the upward movement of the top rod 10, its top end continuously abuts against the bottom wall of the grid frame 4. Since the grid frame 4 is fixed The upward movement of the stationary top rod 10 is essentially a sliding push relative to the grid frame 4. The reciprocating pushing action of the top rod 10 transmits periodic, axial vibration or impact force directly to the bottom structure of the fixed grid frame 4 through its top end. The high-frequency, small-amplitude vibration can effectively shake off sand particles or small debris stuck in the grid mesh, preventing the mesh from being gradually blocked. This ensures that the grid frame 4 always has sufficient effective flow area, solving the problem of "grinding" and clogging that easily occurs when the grid is processing wet and sticky sand, and ensuring the continuity and efficiency of the screening operation.

[0028] like Figure 1 , Figure 2 , Figure 5 , Figure 9 , Figure 10 and Figure 11 As shown, in a preferred embodiment, based on the above method, the guide plate 3 is further rotatably disposed on the inner wall of the square receiving hopper 2 by means of a pin. The four inclined side walls of the square receiving hopper 2 are slidably connected to the slide rod 11. Several ball heads 111 are equidistantly disposed on the slide rod 11. Each ball head 111 is fixedly provided with a connecting rod 112. Each connecting rod 112 is slidably connected to the bottom of a guide plate 3. Furthermore, protective shells 12 are fixed at two corners of the square receiving hopper 2. A transmission rod 121 is rotatably connected inside each protective shell 12. A reciprocating screw 122 is fixed at one end of the transmission rod 121. A sleeve 123 that is slidably connected to the protective shell 12 is threaded onto the reciprocating screw 122. Two movable rods 124 are hinged to the sleeve 123 by a pin. One movable rod 124 is hinged to one of the sliding rods 11 at the junction of the adjacent side wall of the square receiving hopper 2. The other movable rod 124 is hinged to another sliding rod 11 at the same junction of the square receiving hopper 2. Furthermore, a worm gear 13 is fixed on the shaft body of the drive shaft 7 located on the outside of the square receiving hopper 2, and a worm wheel 131 that meshes with the worm gear 13 is provided on the transmission rod 121. A housing is provided on the outer wall of the square receiving hopper 2 at the meshing point of the worm gear 13 and the worm wheel 131 for protection. Specifically, an independent drive unit (including a protective shell 12, a transmission rod 121, and a reciprocating screw 122) is set at each of the two opposite corners of the square receiving hopper 2. Each unit drives the slide rods 11 of the two adjacent side walls. The two drive units are synchronously driven by the same drive shaft 7 through the worm gear 13 and worm wheel 131, thereby jointly realizing the synchronous and periodic oscillating drive of all the guide plates 3 on all four side walls. When the drive shaft 7 rotates, the worm gear 13 on it drives the worm wheel 131 meshing with it to rotate. The worm wheel 131 drives the transmission rod 121 to rotate, thereby reducing speed and changing the direction of power. The transmission rod 121 drives the reciprocating screw 122 on it to rotate. The sleeve 123 threaded with the reciprocating screw 122 converts the rotational motion into linear reciprocating motion along the screw axis. The linear reciprocating motion of the sleeve 123, through its hinged movable rod 124, pushes or pulls the two connected sliding rods 11, causing them to slide synchronously back and forth on the side wall of the square receiving hopper 2. The reciprocating sliding of the sliding rods 11, through the ball head 111 and connecting rod 112 on them, is converted into a pushing and pulling action on the bottom of the guide plate 3. Since the top of the guide plate 3 is rotatably connected by a pin, this pushing and pulling force forces all the guide plates 3 to swing synchronously and periodically around their pin axis. This can effectively peel off the wet and sticky sand adhering to the surface of the guide plate 3 or accumulated on the inner wall of the square receiving hopper 2, destroying the "material arch" structure formed by it. This fundamentally solves the problem that sticky sand is easy to clump and bridge, resulting in poor material discharge or even blockage, and ensures that the material continuously and evenly enters the mixing zone.

[0029] The present invention also discloses a method for using a marine sand transfer bucket based on the aforementioned efficient mixing of mud and sand with water, which further includes the following steps: S1: Preparation Phase Secure the sand bucket to the ship, connect the water inlet pipe to the feed pipe 101, and the mud discharge pipe to the discharge pipe 102; Start the motor and check whether the mixing assembly, the swinging guide plate 3, and the spiral conveying blades in the return pipe 6 are operating normally. S2: Sand receiving and pretreatment stage: The sand is conveyed from the belt conveyor on the conveyor boat to the top of the sand bucket, and falls from the top of the sand bucket into the square receiving hopper 2. The increased square receiving area reduces the sand spillage rate. The falling sand first passes through the grid frame 4, whose inverted V-shaped mesh frame 402 intercepts large-volume debris. The intercepted debris slides along the inclined mesh surface to the bucket wall and is discharged through the discharge chute 103 to the receiving tray 5. The filter plate 501 in the receiving tray 5 filters the sand that falls with the debris. The sand passes through the filter plate 501 and falls into the bottom of the tray. After being collected by the inclined surface, it is lifted by the spiral conveying blades in the return pipe 6 and sent back to the top of the square receiving hopper 2, completing the automatic recovery of useful sand. The debris is left in the receiving tray 5 for subsequent centralized cleaning. S3: High-efficiency mixing and dynamic anti-blocking stage: Water inlet and vortex formation: The water supply line injects pressurized water into the bottom of the conical bucket 1 through the feed pipe 101. The water flow is designed to enter at a tangential angle, forming a powerful basic vortex inside the conical bucket 1. Active stirring enhances mixing: The drive motor 801 drives the drive shaft 7 to rotate. Through the meshing transmission between bevel gears, the stirring shaft 702 and the stirring component 703 on it are driven to rotate. By controlling the direction of the drive motor 801, the rotation direction of the stirring blades 7033 can be made opposite to that of the natural vortex, thereby generating shear force, breaking up sand clumps, and breaking up the natural stratification of the slurry. Axial dynamic stirring: The eccentric shaft 9 on the drive shaft 7 drives the swing rod 901 to move, so that the swing rod 901 drives the connecting rod 902 to move up and down relative to the connecting pipe 401, so that the entire stirring component 703 moves up and down axially along the stirring shaft 702. The stirring blades 7033 can not only cut the flow field radially, but also promote the material circulation in the vertical direction, forming three-dimensional stirring, preventing bottom sedimentation and surface separation. Dynamic anti-arching of guide plate 3: Drive shaft 7 drives transmission rod 121 and reciprocating screw 122 to rotate simultaneously through worm 13 and worm wheel 131. Sleeve 123 moves linearly back and forth on reciprocating screw 122. Through movable rod 124, it pushes slide rod 11 at the corner of square receiving hopper 2 to slide back and forth. Slide rod 11 drives guide plate 3 to swing synchronously and periodically at small angles through ball head 111 and connecting rod 112. This can break the "material arch" formed by sticky sand and ensure that the sand slides into the mixing zone below continuously and smoothly. S4: Slurry discharge and operation completion: The sand and water form a mixed slurry under the combined action of eddy current and stirring, and are pumped from the discharge pipe 102 to the designated area through the sludge discharge pipeline; After the operation is completed, keep the water intake and agitation running for a short time to rinse, and then turn off all equipment.

[0030] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0031] 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 marine sand transfer bucket based on efficient mixing of mud and sand with water, comprising a conical bucket (1), characterized in that, Also includes: A square receiving hopper (2) is fixed on the upper side of the conical hopper (1) to increase the receiving area; The guide plate (3) is provided in multiple and is equidistantly arranged on the inclined inner wall of the square receiving hopper (2); A grid frame (4) is fixed inside a conical hopper (1) and a square receiving hopper (2) to intercept large-volume debris; The material pipe fitting includes an inlet pipe (101) and an outlet pipe (102) disposed on the lower side of the conical hopper (1). The end of the inlet pipe (101) away from the conical hopper (1) is connected to a water supply line, and the end of the outlet pipe (102) away from the conical hopper (1) is connected to a mud discharge line. And a mixing assembly, which is set on the grid frame (4) to assist in the mixing of water and sand in the conical bucket (1).

2. The marine sand transfer bucket based on efficient mixing of mud and water as described in claim 1, characterized in that, The grid frame (4) includes a connecting pipe (401) fixed between the inner walls of the two sides of the square receiving hopper (2) and a mesh frame (402) arranged on both sides of the connecting pipe (401). The end of the mesh frame (402) away from the connecting pipe (401) is connected to the inner wall of the square receiving hopper (2) and / or the conical hopper (1). The two space frames (402) are arranged in an inverted V shape.

3. A marine sand transfer bucket based on efficient mixing of mud and water as described in claim 2, characterized in that, The inner wall of the conical hopper (1) is provided with a discharge trough (103) at the mesh frame (402). The outer wall of the conical hopper (1) is fixed with a receiving plate (5) at the discharge trough (103). The inner wall of the receiving plate (5) is fixed with a filter plate (501). The bottom inner wall of the receiving plate (5) is set as an inclined surface. The receiving plate (5) is connected to a return pipe (6) at the lowest point of the bottom inclined surface. The return pipe (6) is provided with a spiral conveying blade driven by a motor. The upper opening of the return pipe (6) is located on the upper side of the square receiving hopper (2). The inner wall of the conical bucket (1) is fixed with a guide ring (14) on the lower side of the grid frame (4). The guide ring (14) has an upper inclined surface (141) for sand falling and a lower inclined surface (142) for limiting the upward flow of mud-water mixture on both sides.

4. A marine sand transfer bucket based on efficient mixing of mud and water as described in claim 3, characterized in that, The stirring assembly includes a drive shaft (7) rotatably disposed in the connecting pipe (401), a main bevel gear (701) fixed on the drive shaft (7), a stirring shaft (702) rotatably disposed between the connecting pipe (401) and the inner wall of the bottom of the conical bucket (1), a stirring component (703) disposed on the stirring shaft (702), and a secondary bevel gear (704) disposed on the stirring shaft (702) and meshing with the main bevel gear (701). The square receiving hopper (2) is fixedly provided with a motor housing (8) on the outside, and a drive motor (801) for driving the drive shaft (7) to rotate is fixedly provided inside the motor housing (8).

5. A marine sand transfer bucket based on efficient mixing of mud and water as described in claim 4, characterized in that, An eccentric shaft (9) is provided on the drive shaft (7), and a swing rod (901) is sleeved on the eccentric shaft (9). The end of the swing rod (901) away from the eccentric shaft (9) is connected to a connecting rod (902) that is slidably connected to the connecting pipe (401). The connecting rod (902) is connected to the stirring component (703). The stirring component (703) includes a connecting ring (7031) fixedly connected to the connecting rod (902), a sleeve (7032) rotatably connected to the connecting ring (7031) and slidably disposed with the keyway of the stirring shaft (702), and stirring blades (7033) disposed on the sleeve (7032).

6. A marine sand transfer bucket based on efficient mixing of mud and water as described in claim 5, characterized in that, Both sides of the connecting ring (7031) are fixed with top rods (10), and the end of the top rod (10) away from the connecting ring (7031) moves against the bottom wall of the grid frame (4).

7. A marine sand transfer bucket based on efficient mixing of mud and water as described in claim 6, characterized in that, The guide plate (3) is rotatably mounted on the inner wall of the square receiving hopper (2) via a pin. The four inclined side walls of the square receiving hopper (2) are slidably connected with slide rods (11). Several ball heads (111) are equidistantly arranged on the slide rods (11). Each ball head (111) is fixed with a connecting rod (112). Each connecting rod (112) is slidably connected to the bottom of a guide plate (3).

8. A marine sand transfer bucket based on efficient mixing of mud and water as described in claim 7, characterized in that, Protective shells (12) are fixed at two corners of the square receiving hopper (2). A transmission rod (121) is rotatably connected inside each protective shell (12). A reciprocating screw (122) is fixed at one end of the transmission rod (121). A sleeve (123) is threadedly connected to the reciprocating screw (122) and slidably connected to the protective shell (12). Two movable rods (124) are hinged to the sleeve (123) by a pin. One movable rod (124) is hinged to one of the sliding rods (11) at the junction of the adjacent side wall of the square receiving hopper (2), and the other movable rod (124) is hinged to another sliding rod (11) at the same junction of the square receiving hopper (2).

9. A marine sand transfer bucket based on efficient mixing of mud and water as described in claim 8, characterized in that, The drive shaft (7) is fixed on the shaft body outside the square receiving hopper (2) with a worm (13). The transmission rod (121) is provided with a worm wheel (131) that meshes with the worm (13). The outer wall of the square receiving hopper (2) is provided with a shell at the meshing point of the worm (13) and the worm wheel (131) for protection.

10. A method of using a marine sand transfer bucket based on efficient mixing of mud and water as described in claim 9, characterized in that, It also includes the following steps: S1: Preparation Phase The sand bucket is fixedly installed on the ship, and the water inlet pipe is connected to the feed pipe (101), and the mud discharge pipe is connected to the discharge pipe (102). Start the motor and check whether the stirring assembly, the guide plate (3) swinging and the spiral conveying blades in the return pipe (6) are operating normally; S2: Sand receiving and pretreatment stage: The sand is conveyed from the belt on the belt boat to the top of the sand bucket, and falls from the top of the sand bucket into the square receiving hopper (2). The square receiving area reduces the sand spillage rate. The falling sand first passes through the grid frame (4), whose inverted V-shaped mesh frame (402) intercepts large-volume debris. The intercepted debris slides along the inclined mesh surface to the bucket wall and is discharged through the discharge chute (103) to the receiving tray (5). The filter plate (501) in the receiving tray (5) filters the sand falling with the debris. The sand passes through the filter plate (501) and falls into the bottom of the tray. After being collected by the inclined surface, it is lifted by the spiral conveying blades in the return pipe (6) and sent back to the top of the square receiving hopper (2), thus completing the automatic recovery of useful sand. The debris is left in the receiving tray (5) for subsequent centralized cleaning. S3: Hybrid and Dynamic Anti-blocking Phase Water inlet and vortex formation: The water supply line injects pressurized water into the bottom of the conical bucket (1) through the feed pipe (101). The water flow is designed to enter at a tangential angle, forming a basic vortex inside the conical bucket (1). Active mixing: The drive motor (801) drives the drive shaft (7) to rotate. Through the meshing transmission between bevel gears, the stirring shaft (702) and the stirring components (703) on it are driven to rotate. By controlling the direction of the drive motor (801), the rotation direction of the stirring blades (7033) can be opposite to that of the natural vortex, thereby generating shear force, breaking up sand clumps, and breaking the natural stratification of the slurry; Axial dynamic stirring: The eccentric shaft (9) on the drive shaft (7) drives the swing rod (901) to move, so that the swing rod (901) drives the connecting rod (902) to move up and down relative to the connecting pipe (401), so that the entire stirring component (703) moves up and down axially along the stirring shaft (702). The stirring blades (7033) can not only cut the flow field radially, but also push the material circulation in the vertical direction to form three-dimensional stirring, preventing bottom sedimentation and surface separation. Dynamic anti-arching of guide plate (3): The drive shaft (7) drives the transmission rod (121) and reciprocating screw (122) to rotate simultaneously through the worm (13) and worm wheel (131). The sleeve (123) makes linear reciprocating motion on the reciprocating screw (122). Through the movable rod (124), it pushes the sliding rod (11) at the corner of the square receiving hopper (2) to slide back and forth. The sliding rod (11) drives the guide plate (3) to make synchronous and periodic small-angle swing through the ball head (111) and connecting rod (112), which can break the "material arch" formed by the sticky sand and ensure that the sand continues to slide into the mixing zone below. S4: Slurry discharge and operation completion: The sand and water form a mixed slurry under the combined action of eddy current and stirring, and are pumped from the discharge pipe (102) to the designated area through the sludge discharge pipeline; After the operation is completed, keep the water intake and agitation running for a short time to rinse, and then turn off all equipment.

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