Dredging vessel with sludge dewaterer

Abstract

The utility model relates to the technical field of sludge dewatering machine and discloses a sludge dewatering machine for a dredging ship, which comprises two mounting racks, a fixed bottom plate fixedly connected to the upper surfaces of the two mounting racks, and two mounting racks for fixed installation with the dredging ship. The specific shape and mounting mode of the two mounting racks can be determined according to actual conditions. The sludge dewatering assembly is arranged on the fixed bottom plate and comprises two concave racks, which are both fixedly connected to the upper surface of the fixed bottom plate. The two concave racks are arranged in a left-right corresponding manner. A sludge dewatering tank is fixedly connected to the opposite surfaces of the two concave racks. The timer is used to control the regular cooperative operation of the components. The baffle and the push plate are used to realize the closed extrusion of sludge. The through hole and the inclined plate are used to complete the separation of moisture and dry sludge. The rubber sealing sleeve ensures the sealing property. The linkage of the components realizes the automatic dewatering treatment of the sludge of the dredging ship, thereby improving the sludge treatment efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sludge dewatering machine technology, specifically a sludge dewatering machine for dredging vessels. Background Technology

[0002] In river dredging and water conservancy projects, the dewatering of sludge dredged by dredging vessels is a crucial step. However, in the traditional dewatering process, each step, including feeding, squeezing and dewatering, requires manual intervention and control throughout. This is not only labor-intensive, but also prone to process inconsistencies due to differences in the rhythm of manual operation, making it difficult to form continuous and stable dewatering operations. This affects dewatering efficiency and increases the risk of equipment damage due to human error, making it difficult to meet the needs of large-scale dredging projects for efficient and continuous dewatering operations. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a sludge dewatering machine for dredging vessels. It solves the problem that in traditional dewatering processes, each step, including feeding, squeezing dewatering, and sludge discharge, requires full manual intervention and control. This not only results in high labor intensity but also makes it difficult to achieve continuous and stable dewatering operations due to differences in the rhythm of manual operation. This affects dewatering efficiency and increases the risk of equipment damage caused by human error, making it difficult to meet the needs of large-scale dredging projects for efficient and continuous dewatering operations.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sludge dewatering machine for a dredging vessel, comprising two mounting frames, with a fixed base plate fixedly connected to the upper surface of the two mounting frames, the two mounting frames being used for fixed installation with the dredging vessel, and the specific shape and installation method of the two mounting frames being determined according to the actual situation;

[0007] The sludge dewatering assembly is mounted on a fixed base plate. The sludge dewatering assembly includes two concave frames, both of which are fixedly connected to the upper surface of the fixed base plate. The two concave frames are arranged in a left-right correspondence.

[0008] The two concave frames are fixedly connected to a sludge dewatering tank on their opposite sides. The front surface of the sludge dewatering tank is provided with a second rectangular groove that communicates with its interior, and the rear surface of the sludge dewatering tank is provided with a first rectangular groove that communicates with its interior.

[0009] Preferably, the left and right sides of the sludge dewatering tank are fixedly connected to a first servo electric telescopic rod mounting box, and the first servo electric telescopic rod is fixedly installed inside the two first servo electric telescopic rod mounting boxes.

[0010] Preferably, the telescopic ends of the two first servo electric telescopic rods slide through the front surface of the corresponding first servo electric telescopic rod mounting box, and the telescopic ends of the two first servo electric telescopic rods are fixedly connected to a connecting plate.

[0011] Preferably, a baffle is fixedly connected to the rear surface of the connecting plate, and the rear end of the baffle slides through the inner wall of the second rectangular groove and extends into the inner wall of the sludge dewatering tank.

[0012] Preferably, the sludge dewatering tank is fixedly connected to both the left and right sides with connecting frames, and the opposite sides of the two connecting frames are fixedly connected to the second servo electric telescopic rod mounting box.

[0013] The second servo electric telescopic rod mounting box is located directly behind the sludge dewatering tank.

[0014] Preferably, a second servo electric telescopic rod is fixedly installed inside the second servo electric telescopic rod mounting box. A push plate is fixedly connected to the telescopic end of the second servo electric telescopic rod. Nylon bristles are fixedly connected to the rear side of the lower surface of the push plate. The front end of the push plate slides through the inner wall of the first rectangular groove.

[0015] Preferably, both the push plate and the baffle are provided with a rubber sealing sleeve on their outer walls, and the shape of the rubber sealing sleeve depends on its specific shape.

[0016] Preferably, the lower surface of the sludge dewatering tank is provided with multiple through holes communicating with its interior, and the multiple through holes are used to filter water from the sludge.

[0017] Preferably, a conical tank is fixedly connected to the opposite surfaces of the two concave frames, and the conical tank is located directly above the sludge dewatering tank;

[0018] The lower surface of the conical tank is fixedly connected to a connecting pipe that communicates with its interior. The lower end of the connecting pipe penetrates the interior of the sludge dewatering tank, and an electric valve is installed on the connecting pipe.

[0019] Preferably, the electric valve, the first servo electric telescopic rod, and the second servo electric telescopic rod can all be controlled to open and close by a timer, that is, sludge dewatering is performed once at regular intervals, and the electric valve is closed during sludge dewatering.

[0020] Among them, the opposite surfaces of the two concave frames are fixedly connected to the fixing plates, and the opposite surfaces of the two fixing plates are fixedly connected to the second inclined plate;

[0021] The second inclined plate is tilted backward and is located directly below the sludge dewatering tank. The first inclined plate is fixedly connected to the front surface of the sludge dewatering tank.

[0022] (III) Beneficial Effects

[0023] Compared with the prior art, this utility model provides a sludge dewatering machine for dredging ships, which has the following beneficial effects:

[0024] This sludge dewatering machine for dredging vessels uses a timer to control the coordinated operation of its components. The baffle and push plate work together to achieve the closed compression of sludge, while the through holes and inclined plates separate water from dry sludge. Rubber sealing sleeves ensure airtightness. The linkage of all components enables automated dewatering of sludge from dredging vessels, reducing manual intervention and improving sludge treatment efficiency. In this sludge dewatering machine for dredging vessels, the rubber sealing sleeve on the outer wall of the push plate is in close contact with the inner wall of the sludge dewatering tank, which enhances the compression effect and avoids sludge residue. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the sludge dewatering machine for dredging vessels of this utility model;

[0026] Figure 2 This is a schematic diagram showing the location of the through hole in this utility model;

[0027] Figure 3 This is a schematic diagram showing the position of the baffle in this utility model;

[0028] Figure 4 This is a schematic diagram showing the position of the first rectangular groove in this utility model;

[0029] Figure 5 This is a schematic diagram showing the position of the nylon bristles in this utility model.

[0030] In the diagram: 1. Fixed plate; 2. Mounting bracket; 3. Concave bracket; 4. First servo electric telescopic rod mounting box; 5. Conical tank; 6. Connecting pipe; 7. Sludge dewatering tank; 8. Connecting plate; 9. First inclined plate; 10. Second inclined plate; 11. Fixed base plate; 12. Through hole; 13. Push plate; 14. Second servo electric telescopic rod mounting box; 15. Connecting bracket; 16. Baffle; 17. First rectangular groove; 18. Second rectangular groove; 19. Nylon bristles. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-5This utility model provides a new technical solution: a sludge dewatering machine for dredging vessels, which effectively solves the problem that the commonly used sludge dewatering methods on dredging vessels mostly rely on simple filters or sedimentation tanks for preliminary dewatering, which can basically separate free water.

[0033] The sludge dewatering box 7 is fixed on the opposite sides of two concave frames 3, with a first rectangular groove 17 and a second rectangular groove 18 at the front and back, and multiple through holes 12 on the lower surface. The interior contains sludge and performs squeezing and dewatering, and is the main space for sludge dewatering.

[0034] The second rectangular groove 18 is formed on the front surface of the sludge dewatering tank 7, through which the baffle 16 slides and provides a moving channel for the baffle, so that the baffle can close or open the front end of the sludge dewatering tank, and cooperate with the push plate to complete the squeezing and sludge discharge.

[0035] The first rectangular groove 17 is formed on the rear surface of the sludge dewatering tank 7, through which the pusher plate 13 slides and provides a moving channel for the pusher plate, so that the pusher plate can enter the sludge dewatering tank to squeeze the sludge and achieve dewatering.

[0036] The first servo electric telescopic rod mounting box 4 is fixed on the left and right sides of the sludge dewatering tank 7. The first servo electric telescopic rod is installed inside, protecting the electric telescopic rod and fixing its position, providing power support for the movement of the baffle.

[0037] The first servo electric telescopic rod is installed inside the first servo electric telescopic rod mounting box 4. The telescopic end is connected to the connecting plate 8, which drives the baffle 16 to move back and forth, controlling the closing and opening of the front end of the sludge dewatering tank, and realizing sludge discharge control.

[0038] The connecting plate 8 connects the telescopic end of the first servo electric telescopic rod and the baffle 16, transmitting the power of the electric telescopic rod and driving the baffle to move synchronously, ensuring that the baffle is subjected to uniform force.

[0039] The rear end of the baffle 16 slides through the second rectangular groove 18 to the inner wall of the sludge dewatering tank 7, and connects to the connecting plate 8. It works with the push plate to seal the internal space of the sludge dewatering tank, so that the sludge will not overflow from the front end when squeezed, thus ensuring the dewatering effect.

[0040] The connecting frame 15 is fixed on the left and right sides of the sludge dewatering tank 7, and the opposite side is connected to the second servo electric telescopic rod mounting box 14 to support the second servo electric telescopic rod mounting box and ensure the stability of the power components of the push plate.

[0041] The second servo electric telescopic rod mounting box 14 is fixed on the opposite side of the two connecting frames 15, located directly behind the sludge dewatering box 7. The second servo electric telescopic rod is installed inside, protecting the electric telescopic rod and fixing its position, and providing power for the push plate.

[0042] The second servo electric telescopic rod is installed inside the second servo electric telescopic rod mounting box 14. The telescopic end is connected to the push plate 13, which drives the push plate to move back and forth, applying pressure to the sludge in the sludge dewatering box to achieve dewatering.

[0043] The front end of the push plate 13 slides through the first rectangular groove 17 into the sludge dewatering tank 7, and connects to the extension end of the second servo electric telescopic rod. Under the drive of the electric telescopic rod, the sludge is squeezed, the water is squeezed out and the dry sludge is pushed out. The outer wall rubber sealing sleeve enhances the sealing performance.

[0044] The rubber sealing sleeve is installed on the outer wall of the push plate 13 and the baffle 16. It is adapted to the shape of the two and makes close contact with the inner wall of the sludge dewatering tank 7 to enhance the sealing during extrusion and prevent sludge residue and water leakage.

[0045] Through holes 12 are formed on the lower surface of the sludge dewatering tank 7 to filter water in the sludge, allowing the water generated by squeezing to seep out and achieve sludge-water separation.

[0046] The conical tank 5 is fixed on the opposite sides of the two concave frames 3, located directly above the sludge dewatering tank 7, and connected to the connecting pipe 6 below. It temporarily stores the externally input sludge, and the conical structure allows the sludge to flow smoothly to the connecting pipe.

[0047] The connecting pipe 6 connects the lower surface of the conical tank 5 and the inside of the sludge dewatering tank 7. An electric valve is installed on the pipe to transport the sludge in the conical tank to the sludge dewatering tank. The electric valve controls the start and stop of the feeding.

[0048] The electric valve is installed on the connecting pipe 6 and is controlled to open and close via a timer with the first and second servo electric telescopic rods. It allows for timed feeding and stopping, and works in conjunction with the dewatering process to achieve automated operation.

[0049] The fixing plate 1 is fixed to the opposite sides of the two concave frames 3. The opposite sides are connected to the second inclined plate 10, which supports the second inclined plate and ensures its stable position, so as to facilitate the receiving and diversion of water generated during dehydration.

[0050] The second inclined plate 10 is fixed on the opposite side of the two fixed plates 1, tilted backward, and located directly below the sludge dewatering tank 7. It receives water seeping out from the through hole 12 and guides the water to flow backward for easy collection.

[0051] The first inclined plate 9 is fixed on the front surface of the sludge dewatering tank 7, receiving the dewatered dry sludge and guiding it to the designated collection area to achieve orderly discharge of the dry sludge.

[0052] Example 1:

[0053] like Figure 5As shown, when processing sludge containing a large number of fine particles, the through holes 12 on the lower surface of the sludge dewatering tank 7 are easily blocked by particles, resulting in a decrease in drainage efficiency. To address this, nylon bristles 19 are added to the bottom of the push plate 13. As the push plate 13 moves, the nylon bristles clean the through holes 12.

[0054] Example 2:

[0055] Faced with significant differences in silt concentration in different river channels (such as clayey silt and sandy silt), a fixed extrusion pressure can easily lead to incomplete dewatering of thin silt or excessive extrusion of thick silt, damaging the equipment. To address this, a strain gauge pressure sensor is installed on each of the left and right inner walls of the sludge dewatering tank 7 to monitor the pressure value of the pusher plate 13 during extrusion in real time.

[0056] It can simultaneously measure static pressure (such as during a stable extrusion process) and dynamic pressure (such as pressure fluctuations when sludge concentration changes abruptly);

[0057] The structure is robust and can withstand the abrasion and potential corrosion of sludge through encapsulation (such as metal casing and anti-corrosion coating);

[0058] It has high accuracy (typically 0.1% to 1% FS) and can meet the needs of pressure fine adjustment;

[0059] The output signal is stable (such as voltage and current signals), which facilitates interface with control systems (such as PLC);

[0060] An ultrasonic concentration sensor is installed at the bottom of the conical tank 5 to detect the concentration of sludge before it enters the sludge dewatering tank (the higher the concentration, the greater the ultrasonic reflection intensity).

[0061] After receiving the concentration signal, the controller presets the corresponding pressure threshold (e.g., 1.2MPa for thick mud and 0.8MPa for thin mud). When the strain gauge pressure sensor detects that the actual pressure has reached the threshold, it automatically controls the second servo electric telescopic rod to stop advancing.

[0062] If the concentration sensor detects an abnormal sludge concentration (such as the presence of large impurities), the controller immediately triggers an audible and visual alarm and simultaneously suspends the extrusion process to prevent overload damage to the equipment. Through dual control of "concentration prediction + pressure feedback," the equipment adapts to different types of sludge, ensuring both dewatering effectiveness and extending the equipment's service life.

[0063] Example 3:

[0064] A flexible solar panel is installed on the deck of the dredging vessel (near the dewatering machine), fixed by a bracket, and its output is connected to a charge and discharge controller and a backup lithium battery pack (capacity 50Ah).

[0065] The lithium battery pack is connected in parallel with the existing power supply system of the dehydrator. When the solar panel generates sufficient power (e.g., solar irradiance ≥ 800W / m²),2 When solar power is insufficient, the ship will automatically switch to the ship's electrical grid.

[0066] The charge / discharge controller monitors the lithium battery pack's charge level in real time. When the charge level exceeds 90%, charging is stopped to prevent overcharging; when the charge level is below 20%, solar power output is cut off to prevent over-discharging.

[0067] All servo-driven electric telescopic masts, sensors, and controllers are compatible with low-voltage power supply (12V-24V) to ensure stable operation of the equipment when switching between solar power and the ship's power grid.

[0068] Furthermore, when using the sludge dewatering machine for the dredging vessel, the sludge dewatering machine for the dredging vessel is first fixedly installed in the designated position on the dredging vessel using two mounting brackets 2;

[0069] Subsequently, the sludge is placed into the conical tank 5 through an external device;

[0070] The sludge inside the conical tank 5 enters the sludge dewatering tank 7 through the connecting pipe 6;

[0071] Once the amount of sludge reaches the preset value, the electric valve closes, stopping the feeding process.

[0072] Subsequently, the second servo electric telescopic rod in the second servo electric telescopic rod mounting box 14 is activated, and its telescopic end pushes the push plate 13 forward. The front end of the push plate 13 slides into the interior of the sludge dewatering tank 7 along the first rectangular groove 17. As the push plate 13 continues to move forward, it will compress the sludge in the sludge dewatering tank 7 in conjunction with the baffle 16. Under the pressure, the water in the sludge seeps out through multiple through holes 12 on the lower surface of the sludge dewatering tank 7.

[0073] The seeping water drips onto the second inclined plate 10 located directly below the sludge dewatering tank 7. Since the second inclined plate 10 is tilted backward, the water will flow backward along its surface, making it easy to collect and process. The sludge that has been squeezed and dewatered is pushed forward by the push plate 13. Finally, the push plate 13 pushes the dewatered dry sludge to the front end of the sludge dewatering tank 7. At this time, the first servo electric telescopic rod retracts and drives the baffle 16 to move forward, releasing the front end seal. The dry sludge falls onto the first inclined plate 9 under the continuous pushing force of the push plate 13. The first inclined plate 9 guides the dry sludge to the designated collection area.

[0074] Among them, the rubber sealing sleeve on the outer wall of the push plate 13 is in close contact with the inner wall of the sludge dewatering box 7, which not only enhances the squeezing effect but also avoids sludge residue. After dewatering, the second servo electric telescopic rod retracts to drive the push plate 13 to reset, and the first servo electric telescopic rod also drives the baffle 16 to reset, waiting for the next timer to be triggered, and entering the next cycle of "feeding - sealing - squeezing dewatering - sludge discharge".

[0075] The system uses a timer to control the coordinated operation of each component. The baffle 16 and the pusher 13 work together to seal and squeeze the sludge. The through hole 12 and the inclined plate separate water from dry sludge. The rubber sealing sleeve ensures the seal. The linkage of each component enables the automated dewatering of sludge from the dredging vessel, reducing manual intervention and improving sludge treatment efficiency.

[0076] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sludge dewatering machine for dredging vessels, comprising two mounting brackets (2), characterized in that: The upper surfaces of the two mounting brackets (2) are fixedly connected to a base plate (11), and the two mounting brackets (2) are used for fixed installation with the dredging vessel; The sludge dewatering assembly is set on a fixed base plate (11). The sludge dewatering assembly includes two concave frames (3). The two concave frames (3) are fixedly connected to the upper surface of the fixed base plate (11). The two concave frames (3) are arranged in a left-right correspondence. Among them, the two concave frames (3) are fixedly connected to the opposite surfaces of the sludge dewatering tank (7). The front surface of the sludge dewatering tank (7) is provided with a second rectangular groove (18) that communicates with its interior, and the rear surface of the sludge dewatering tank (7) is provided with a first rectangular groove (17) that communicates with its interior.

2. The sludge dewatering machine for dredging vessels according to claim 1, characterized in that: The sludge dewatering tank (7) is fixedly connected to the left and right sides of the first servo electric telescopic rod mounting box (4), and the first servo electric telescopic rod is fixedly installed inside the two first servo electric telescopic rod mounting boxes (4).

3. The sludge dewatering machine for dredging vessels according to claim 2, characterized in that: The telescopic ends of the two first servo electric telescopic rods slide through the front surface of the corresponding first servo electric telescopic rod mounting box (4), and the telescopic ends of the two first servo electric telescopic rods are fixedly connected to the connecting plate (8).

4. The sludge dewatering machine for dredging vessels according to claim 3, characterized in that: A baffle (16) is fixedly connected to the rear surface of the connecting plate (8). The rear end of the baffle (16) slides through the inner wall of the second rectangular groove (18) and extends to the inner wall of the sludge dewatering tank (7).

5. A sludge dewatering machine for dredging vessels according to claim 1, characterized in that: The sludge dewatering box (7) is fixedly connected to both the left and right sides with connecting frames (15), and the opposite sides of the two connecting frames (15) are fixedly connected to the second servo electric telescopic rod mounting box (14). The second servo electric telescopic rod mounting box (14) is located directly behind the sludge dewatering box (7).

6. A sludge dewatering machine for dredging vessels according to claim 5, characterized in that: The second servo electric telescopic rod is fixedly installed inside the second servo electric telescopic rod mounting box (14). The telescopic end of the second servo electric telescopic rod is fixedly connected to a push plate (13). Nylon bristles (19) are fixedly connected to the rear side of the lower surface of the push plate (13). The front end of the push plate (13) slides through the inner wall of the first rectangular groove (17).

7. A sludge dewatering machine for dredging vessels according to claim 6, characterized in that: The outer walls of both the push plate (13) and the baffle (16) are provided with a rubber sealing sleeve, the shape of which depends on the specific shape of the rubber sealing sleeve.

8. A sludge dewatering machine for dredging vessels according to claim 1, characterized in that: The sludge dewatering tank (7) has multiple through holes (12) on its lower surface that communicate with its interior. These through holes (12) are used to filter water from the sludge.

9. A sludge dewatering machine for dredging vessels according to claim 1, characterized in that: Two concave frames (3) are fixedly connected to a conical tank (5) on their opposite sides, and the conical tank (5) is located directly above the sludge dewatering tank (7); Among them, the lower surface of the conical tank (5) is fixedly connected to a connecting pipe (6) that communicates with its interior. The lower end of the connecting pipe (6) penetrates the interior of the sludge dewatering tank (7), and an electric valve is installed on the connecting pipe (6).

10. A sludge dewatering machine for dredging vessels according to claim 9, characterized in that: The electric valve, the first servo electric telescopic rod, and the second servo electric telescopic rod can all be controlled to open and close by a timer, that is, sludge dewatering is performed once at a certain time interval, and the electric valve is closed during sludge dewatering. Among them, the opposite surfaces of the two concave frames (3) are fixedly connected to the fixing plates (1), and the opposite surfaces of the two fixing plates (1) are fixedly connected to the second inclined plates (10). The second inclined plate (10) is inclined backward and is located directly below the sludge dewatering tank (7). The first inclined plate (9) is fixedly connected to the front surface of the sludge dewatering tank (7).

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