Underwater desilting mechanism and underwater desilting method for dock

Abstract

The invention belongs to the technical field of ships, and particularly discloses an underwater desilting mechanism for a dock and an underwater desilting method.The underwater desilting mechanism comprises a dock bottom face, a water suction pump, an air blowing assembly and a plurality of liquid level sensors, and when the liquid level is located above a first water level, the water suction pump is started and pumps water in the dock; when the liquid level is located between the first water level and the second water level, the water suction pump is started and pumps water in the dock, and the air blowing assembly is started and stirs deposits in the dock; when the liquid level is lower than the second water level, the water suction pump and the air blowing assembly are closed; wherein the first water level is higher than the second water level which is lower than or equal to the lowest point of the dock bottom surface. The water depth condition is automatically detected, opening and closing of the water suction pump and the high-pressure air pipe valve are controlled, manual intervention is not needed, manpower input is greatly reduced, and the desilting efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to an underwater dredging mechanism and method for use in shipyards. Background Technology

[0002] Currently, the dredging methods in the dock are relatively traditional, mainly including pumping out water and using high-pressure water jets for dredging. However, these methods are inefficient, time-consuming, and costly. They also require a large amount of manpower for coordinated cleaning, making it impossible to guarantee the rapid loading of ships within the dock. Summary of the Invention

[0003] The purpose of this invention is to provide an underwater dredging mechanism and method to solve the technical problems of inconvenience and low efficiency in existing dock dredging techniques.

[0004] To achieve the above objectives, an embodiment of the first aspect of the present invention provides an underwater dredging mechanism, including a dock bottom, a water pump, an air blowing assembly, and multiple liquid level sensors. The dock bottom is located at the bottom of the dock, and a water collection tank is provided at at least one end of the dock bottom, the water collection tank being connected to the outside. The water pump is built into the water collection tank. The air blowing assembly is laid on the dock bottom and is used to blow high-pressure air. Multiple liquid level sensors are located in the dock and are used to identify the water level in the dock. The liquid level sensor is electrically connected to the water pump and the air blowing assembly; when the liquid level is above the first water level, the water pump is turned on and pumps water from the dock; when the liquid level is between the first water level and the second water level, the water pump is turned on and pumps water from the dock, and the air blowing assembly is turned on and stirs up the accumulated material in the dock; when the liquid level is below the second water level, the water pump and the air blowing assembly are turned off; wherein, the first water level is higher than the second water level, and the second water level is lower than or equal to the lowest point of the dock bottom.

[0005] Preferably, the horizontal plane at the lowest point of the dock bottom surface is used as the reference plane, the first water level is 1m higher than the reference plane, and the second water level is 0.1m lower than the reference plane.

[0006] Preferably, the dock bottom has a first end and a second end, the surface of the dock bottom slopes downward from the first end toward the second end, and the water collection tank is disposed at the second end.

[0007] Preferably, the liquid level sensor includes a first sensor and a second sensor, wherein the first sensor is disposed at a first water level and the second sensor is disposed at a second water level.

[0008] Preferably, water channels are provided on both sides of the bottom surface of the dock, the inclination direction of the water channels is consistent with the inclination direction of the bottom surface of the dock, and the blowing direction of the high-pressure air of the air blowing assembly is towards the water channels and the water collection channel.

[0009] Preferably, along the width direction of the dock bottom surface, the surface of the dock bottom surface slopes from the middle to both sides.

[0010] Preferably, the high-pressure air of the air blowing assembly is blown towards the water collection tank.

[0011] Preferably, the air blowing assembly includes a first main pipe and a branch pipe. One end of the first main pipe is connected to a high-pressure air source, and the other end is sealed. The first main pipe extends along the length of the bottom surface of the dock. The branch pipe is fixedly connected to the body of the first main pipe. The branch pipe is at an angle to the first main pipe. Along the extension direction of the branch pipe, a plurality of first air outlets are arranged at intervals.

[0012] Preferably, the air blowing assembly further includes a second main pipe, which is arranged parallel to the first main pipe. There are two first main pipes, which are respectively arranged on both sides of the second main pipe. A transition pipe is provided between the air outlet of the second main pipe and the air inlet of the first main pipe. A high-pressure air source is connected along the air inlet of the second main pipe. Along the extension direction of the second main pipe, a plurality of second air outlets are arranged at intervals in the second main pipe.

[0013] The underwater dredging mechanism provided by this invention has the following advantages: it automatically detects water depth and controls the opening and closing of the water pump and high-pressure air valve, eliminating the need for manual intervention, greatly reducing manpower input, and improving dredging efficiency.

[0014] A second aspect of the present invention provides an underwater dredging method for controlling an underwater dredging mechanism implementing the first aspect of the present invention, comprising the following steps: Step 1: Fill the dock with water to prepare for the ship to leave the dock; Step 2: After the ship leaves the dock, start the water pumps to extract water from the sump. Step 3: When the water level drops below the first water level, start the air blowing device to stir up the silt on the bottom of the dock. Step 4: When the water level drops below the second water level, stop the air blowing assembly and the water pump.

[0015] The underwater dredging method provided by this invention has the following advantages: it automatically detects water depth and controls the opening and closing of the water pump and high-pressure air valve, eliminating the need for manual intervention, greatly reducing manpower input, and improving dredging efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an underwater dredging mechanism according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the dock bottom surface of the underwater dredging mechanism according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the dock bottom surface of the underwater dredging mechanism according to an embodiment of the present invention from another direction; Figure 4 This is a partial cross-sectional schematic diagram of the branch pipe of the underwater dredging mechanism according to an embodiment of the present invention; Figure 5 This is a partial cross-sectional schematic diagram of the second main pipe of the underwater dredging mechanism according to an embodiment of the present invention; In the picture, 100. Dock bottom; 101. First end; 102. Second end; 110. Water collection trough; 120. Water flow trough; 200. Water pump; 300, Air blowing assembly; 310, First main pipe; 320, Branch pipe; 321, First air outlet; 330, Second main pipe; 331, Transition pipe; 332, Second air outlet; 400, Liquid level sensor; 410, First sensor; 420, Second sensor. Detailed Implementation

[0017] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0018] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0019] In the description of this invention, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0020] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0021] Reference Figure 1 and Figure 2 The underwater dredging mechanism of this invention includes a dock bottom surface 100, a water pump 200, an air blowing assembly 300, and multiple liquid level sensors 400. The dock bottom surface 100 is located at the bottom of the dock, and at least one end of the dock bottom surface 100 is provided with a water collection tank 110, which is connected to the outside. The water pump 200 is built into the water collection tank 110. The air blowing assembly 300 is laid on the dock bottom surface 100 and is used to blow high-pressure air. Multiple liquid level sensors 400 are located in the dock and are used to identify the liquid level in the dock. The liquid level sensor 400 is electrically connected to the water pump 200 and the air blowing assembly 300; when the liquid level is above the first water level, the water pump 200 is turned on and pumps water from the dock; when the liquid level is between the first water level and the second water level, the water pump 200 is turned on and pumps water from the dock, and the air blowing assembly 300 is turned on and agitates the accumulated material in the dock; when the liquid level is below the second water level, the water pump 200 and the air blowing assembly 300 are turned off; wherein, the first water level is higher than the second water level, and the second water level is lower than or equal to the lowest point of the dock bottom surface 100.

[0022] The underwater dredging method for controlling the underwater dredging machine includes the following steps: Step 1: Fill the dock with water to prepare for the ship to leave the dock; Step 2: After the ship leaves the dock, start the water pump 200 to pump water from the water collection tank 110. Step 3: When the water level drops below the first water level, start the air blowing component 300 to stir up the silt on the bottom surface 100 of the dock. Step 4: When the water level drops below the second water level, stop the air blowing assembly 300 and the water pump 200.

[0023] In summary, during operation, the level sensor 400 continuously monitors changes in the water level within the dock and feeds the signal back to the control system (not shown in the figure). The control system, based on preset first and second water levels, activates or deactivates the water pump 200 and the air blowing assembly 300 in stages. In the first stage, when the water level is above the first water level, only the water pump 200 operates. As the water level drops to between the first and second water levels, the operation enters the second stage, where the water pump 200 continues to run while the air blowing assembly 300 is activated. High-pressure airflow is ejected from the laid pipes, creating a strong bubble flow and water flow disturbance in the water, loosening the deposited silt and allowing it to move with the water flow. When the water level continues to drop below the second water level, the operation enters the third stage, where all equipment automatically stops operating, halting the dredging work. The system automatically detects water depth and controls the opening and closing of the water pump 200 and the high-pressure air valve, making full use of the synergistic effect of water depth and airflow. This avoids excessive dilution of airflow energy at high water levels (first stage) and prevents the equipment from running idle at low water levels (third stage). No manual intervention is required, greatly reducing manpower input and improving dredging efficiency.

[0024] In some embodiments, refer to Figure 2 Using the lowest point of the dock bottom 100 as a reference plane, the first water level is 1m above the reference plane, and the second water level is 0.1m below the reference plane. Using the lowest point of the dock bottom 100 as a reference, when the water level is 1 meter above this reference, only the water pump 200 is activated for drainage. When the water level drops to between 1 meter above and 0.1 meters below the reference plane, both the water pump 200 and the air blowing assembly 300 are activated simultaneously for drainage and sludge mixing. When the water level finally drops to 0.1 meters below the reference plane, the system automatically determines that dredging is complete and stops all equipment operation. The 0.1-meter low water level threshold is slightly lower than the lowest point of the bottom surface, ensuring that most of the sludge can be effectively removed, while preventing the water pump 200 built into the collection tank 110 from running dry.

[0025] Furthermore, referring to Figure 3 The dock bottom 100 has a first end 101 and a second end 102. The surface of the dock bottom 100 slopes downward from the first end 101 toward the second end 102, and the water collection trough 110 is located at the second end 102. The inclined dock bottom 100 allows water and loose silt to naturally converge into the water collection trough 110 at the second end 102. When the water pump 200 is working, the water flows along the inclined surface, accelerating the drainage process. When the air blowing assembly 300 is working, the agitated silt moves downward under the influence of the water flow and eventually concentrates near the water collection trough 110, making it easy for the water pump 200 to discharge it. The unidirectional inclined design effectively improves drainage and silt transport efficiency, prevents silt from redepositing in other areas of the dock, and reduces dead water zones and silt accumulation dead angles.

[0026] In some embodiments, refer to Figure 1 and Figure 3 The liquid level sensor 400 includes a first sensor 410 and a second sensor 420. The first sensor 410 is located at a first water level, and the second sensor 420 is located at a second water level. The first sensor 410 is fixedly installed at the first water level and continuously monitors whether the water level drops to that position. The second sensor 420 is fixedly installed at the second water level and monitors the final dredging water level. When the water level drops to the position of the first sensor 410, the controller receives a signal and activates the air blowing assembly 300; when the water level drops to the position of the second sensor 420, the controller receives a signal and shuts down all equipment.

[0027] As a further optimization of the above embodiments, refer to Figure 1 and 2 The dock bottom 100 is provided with water channels 120 on both sides. The inclination direction of the water channels 120 is consistent with the inclination direction of the dock bottom 100. The high-pressure air blowing direction of the air blowing assembly 300 is towards the water channels 120 and the water collection channel 110.

[0028] When the air blowing assembly 300 is working, the high-pressure airflow flows along... Figure 1 The arrows direct the water flow towards the flow channel 120 and the collection channel 110, forming a water flow towards these channels. Under the combined action of the airflow and water flow, some of the loosened silt moves along the dock bottom surface 100 to the flow channel 120, and then, guided by the flow channel 120, eventually flows into the collection channel 110. The other part of the silt flows directly along the dock bottom surface 100 to the collection channel 110 for collection. The inclination of the flow channel 120 and the main bottom surface in the same direction ensures the continuity of the water flow and plays a stable guiding role in the water flow.

[0029] Furthermore, referring to Figure 2 Along the width direction of the dock bottom surface 100, the surface of the dock bottom surface 100 slopes from the center to both sides. When the air blowing assembly 300 is working, the airflow blown from the central area pushes the silt to flow to both sides; at the same time, the slope of the dock bottom surface 100 on both sides also causes the water flow and suspended silt to naturally converge into the flow channels 120 on both sides, and finally flow into the collection channel 110 through the guidance of the flow channels 120.

[0030] In some embodiments, refer to Figure 1 , Figure 4 and Figure 5The air blowing assembly 300 includes a first main pipe 310 and a branch pipe 320. One end of the first main pipe 310 is connected to a high-pressure air source, and the other end is sealed. The first main pipe 310 extends along the length of the dock bottom surface 100. The branch pipe 320 is fixedly connected to the body of the first main pipe 310. The branch pipe 320 forms an angle with the first main pipe 310. Along the extension direction of the branch pipe 320, multiple first air outlets 321 are arranged at intervals. After the gas enters the first main pipe 310, it is evenly sprayed out through the multiple first air outlets 321 on the branch pipe 320, forming a dense bubble curtain on the bottom surface, generating comprehensive water flow disturbance, effectively loosening and moving the silt.

[0031] In some embodiments, refer to Figure 1 The air blowing assembly 300 further includes a second main pipe 330, which is arranged parallel to the first main pipe 310. The first main pipe 310 has two sections, which are respectively located on both sides of the second main pipe 330. A transition pipe 331 is provided between the air outlet end of the second main pipe 330 and the air inlet end of the first main pipe 310. A high-pressure air source is connected along the air inlet end of the second main pipe 330. Along the extension direction of the second main pipe 330, a plurality of second air outlets 332 are arranged at intervals in the second main pipe 330.

[0032] A high-pressure gas source is connected to the second main pipe 330 located in the center. The high-pressure gas is evenly distributed to the first main pipes 310 on both sides through the transition pipe 331. The outlets on the three parallel pipes work simultaneously, forming a dense and intersecting high-pressure airflow on the bottom surface. With the synergistic effect of the branch pipe 320 and the second main pipe 330, the silt on the bottom surface 100 of the entire dock can be effectively loosened and pushed towards the water collection tank 110, and finally pumped away by the water pump 200.

[0033] For those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this invention, and these improvements and substitutions should also be considered within the scope of protection of this invention.

Claims

1. An underwater dredging mechanism for a shipyard, characterized in that, include: The bottom surface of the dock is located at the bottom of the dock, and a water collection trough is provided at at least one end of the bottom surface of the dock, the water collection trough being connected to the outside; A water pump is built into the water collection tank; An air blowing assembly is laid on the bottom surface of the dock, and the air blowing assembly is used to blow out high-pressure air. Multiple liquid level sensors are located in the dock, and the multiple liquid level sensors are used to identify the liquid level in the dock. The liquid level sensors are electrically connected to the water pump and the air blowing assembly. When the water level is above the first water level, the water pump is turned on and pumps water from the dock; when the water level is between the first and second water levels, the water pump is turned on and pumps water from the dock, and the air blowing assembly is turned on and stirs up the accumulated material in the dock; when the water level is below the second water level, the water pump and the air blowing assembly are turned off. Wherein, the first water level is higher than the second water level, and the second water level is lower than or equal to the lowest point of the bottom surface of the dock.

2. The underwater dredging mechanism according to claim 1, characterized in that, Using the horizontal plane where the lowest point of the dock bottom surface is located as the reference plane, the first water level is 1m higher than the reference plane, and the second water level is 0.1m lower than the reference plane.

3. The underwater dredging mechanism according to claim 1 or 2, characterized in that, The dock bottom has a first end and a second end, and the surface of the dock bottom slopes downward from the first end toward the second end, with the water collection tank located at the second end.

4. The underwater dredging mechanism according to claim 2, characterized in that, The liquid level sensor includes a first sensor and a second sensor, wherein the first sensor is located at a first water level and the second sensor is located at a second water level.

5. The underwater dredging mechanism according to claim 2, characterized in that, Water channels are provided on both sides of the bottom surface of the dock. The inclination direction of the water channels is consistent with the inclination direction of the bottom surface of the dock. The high-pressure air blowing direction of the air blowing assembly is towards the water channels and the water collection channel.

6. The underwater dredging mechanism according to claim 5, characterized in that, Along the width direction of the dock bottom surface, the surface of the dock bottom surface slopes from the middle to both sides.

7. The underwater dredging mechanism according to claim 1, characterized in that, The high-pressure air from the air blowing assembly is blown towards the water collection tank.

8. The underwater dredging mechanism according to claim 6 or 7, characterized in that, The air blowing assembly includes: The first main pipeline is connected to a high-pressure gas source at one end and sealed at the other end. The first main pipeline extends along the length of the bottom surface of the dock. A branch pipe is fixedly connected to the body of the first main pipe. The branch pipe is at an angle to the first main pipe. Along the extension direction of the branch pipe, a plurality of first air outlets are arranged at intervals on the branch pipe.

9. The underwater dredging mechanism according to claim 8, characterized in that, The air blowing assembly also includes a second main pipe, which is arranged parallel to the first main pipe. There are two first main pipes, which are located on both sides of the second main pipe. A transition pipe is provided between the air outlet of the second main pipe and the air inlet of the first main pipe. A high-pressure air source is connected to the air inlet of the second main pipe. Along the extension direction of the second main pipe, a plurality of second air outlets are arranged at intervals in the second main pipe.

10. An underwater dredging method, characterized in that, The underwater dredging mechanism according to any one of claims 1 to 9 is characterized by comprising the following steps: Step 1: Fill the dock with water to prepare for the ship to leave the dock; Step 2: After the ship leaves the dock, start the water pumps to extract water from the sump. Step 3: When the water level drops below the first water level, start the air blowing device to stir up the silt on the bottom of the dock. Step 4: When the water level drops below the second water level, stop the air blowing assembly and the water pump.

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