CN-121976582-A - Underwater dredging mechanism and underwater dredging method for dock

CN121976582ACN 121976582 ACN121976582 ACN 121976582ACN-121976582-A

Abstract

The invention belongs to the technical field of ships, and particularly discloses an underwater dredging mechanism and an underwater dredging method for a dock, wherein the underwater dredging mechanism comprises a dock bottom surface, a water suction pump, an air blowing assembly and a plurality of liquid level sensors; 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, and the second water level is lower than or equal to the lowest point of the bottom surface of the dock. The automatic detection water depth condition and control of the opening and closing of the water suction pump and the high-pressure air pipe valve do not need manual intervention, so that the manpower investment is greatly reduced, and the dredging efficiency is improved.

Inventors

ZHANG DING
FU YUGUO
HUANG SHIZHONG
QIU HAILONG
XU DEMING
GAO YINGQIN

Assignees

广州文冲船厂有限责任公司

Dates

Publication Date: 20260505
Application Date: 20260116

Claims (10)

1. An underwater dredging mechanism for a dock, comprising: A dock floor at a bottom of the dock, at least one end of the dock floor being provided with a water collecting tank, the water collecting tank being connected to the outside; a water pump arranged in the water collecting tank; the blowing assembly is laid on the bottom surface of the dock and is used for blowing high-pressure air; The liquid level sensors are positioned in the dock and used for identifying the liquid level in the dock, and are electrically connected with the water suction pump and the blowing component; When the liquid level is above the first water level, the water suction pump is started and pumps water in the dock, when the liquid level is 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 component is started and agitates the piled matters in the dock; 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 floor.
2. The underwater dredging mechanism as claimed in claim 1, wherein the first water level is higher than the reference plane by 1m and the second water level is lower than the reference plane by 0.1m with respect to a horizontal plane where a lowest point of a surface of the dock bottom surface is located.
3. The subsea dredging mechanism of claim 1 or 2, wherein the dock floor has a first end and a second end, the surface of the dock floor sloping downwardly from the first end towards the second end, the sump being provided at the second end.
4. The subsea dredging mechanism of claim 2, wherein the fluid level sensor comprises a first sensor disposed at a first water level and a second sensor disposed at a second water level.
5. The underwater dredging mechanism as recited in claim 2, wherein the two sides of the dock bottom surface are provided with a water flowing groove, the inclined direction of the water flowing groove is consistent with the inclined direction of the dock bottom surface, and the air blowing direction of the high-pressure air of the air blowing assembly is toward the water flowing groove and the water collecting groove.
6. The underwater dredging mechanism as recited in claim 5, wherein the surface of the dock floor is sloped from the middle to the sides in the width direction of the dock floor.
7. The underwater dredging mechanism as recited in claim 1, wherein the high pressure air of the air blowing assembly is blown in a direction toward the sump.
8. The subsea dredging mechanism of claim 6 or 7, wherein the blowing assembly comprises: one end of the first main pipeline is connected with a high-pressure air source, the other end of the first main pipeline is plugged, and the first main pipeline is arranged in an extending mode along the length direction of the bottom surface of the dock; The branch pipeline is fixedly connected with the pipe body of the first main pipeline, the branch pipeline forms an angle with the first main pipeline, the branch pipeline is arranged at intervals along the extending direction of the branch pipeline, and a plurality of first air outlets are formed in the branch pipeline at intervals.
9. The underwater dredging mechanism as recited in claim 8, wherein the blowing assembly further comprises a second main pipe, the second main pipe is arranged in parallel with the first main pipe, the first main pipe is provided with two, the two first main pipes are respectively arranged on two sides of the second main pipe, a transition pipe is arranged between an air outlet end of the second main pipe and an air inlet end of the first main pipe, a high-pressure air source is connected along the air inlet end of the second main pipe, and a plurality of second air outlets are arranged at intervals along the extending direction of the second main pipe.
10. An underwater dredging method for controlling an underwater dredging mechanism as claimed in any one of claims 1 to 9, comprising the steps of: step 1, injecting water into a dock for ship undocking; step 2, after the ship is undocked, starting a water suction pump, and pumping water of the dock from a water collecting tank; Step 3, when the water level drops below the first water level, starting an air blowing assembly, and stirring sludge on the bottom surface of the dock by using the air blowing assembly; and 4, stopping the air blowing assembly and the water suction pump when the water level drops below the second water level.

Description

Underwater dredging mechanism and underwater dredging method for dock Technical Field The invention relates to the technical field of ships, in particular to an underwater dredging mechanism and an underwater dredging method for a dock. Background The existing dredging method in the dock is more traditional, and mainly comprises the modes of pumping water, high-pressure water impact dredging and the like, but the dredging method has low dredging efficiency, long construction period and high cost. A large amount of manpower is required for cooperation cleaning, and the rapid carrying work of the ship in the dock cannot be guaranteed. Disclosure of Invention The invention aims to provide an underwater dredging mechanism and an underwater dredging method, which are used for solving the technical problems of inconvenient dredging of a dock and low efficiency in the prior art. In order to achieve the above object, an embodiment of the first aspect of the present invention provides an underwater dredging mechanism, comprising a dock bottom, a water suction pump, an air blowing assembly and a plurality of liquid level sensors, wherein the dock bottom is positioned at the bottom of the dock, at least one end of the dock bottom is provided with a water collecting tank, the water collecting tank is connected to the outside, the water suction pump is arranged in the water collecting tank, the air blowing assembly is laid on the dock bottom and is used for blowing high-pressure air, the plurality of liquid level sensors are positioned in the dock, the plurality of liquid level sensors are used for identifying the liquid level in the dock, the liquid level sensors are electrically connected with the water suction pump and the air blowing assembly, when the liquid level is positioned above a first water level, the water suction pump is started and pumps water in the dock, when the liquid level is positioned between the first water level and a second water level, the air blowing assembly is started and stirs piled in the dock, when the liquid level is lower than the second water level, the water suction pump and the air blowing assembly is closed, and the liquid level sensor is used for identifying the liquid level in the dock, wherein the liquid level sensor is higher than the first water level or equal to the lowest water level in the dock. Preferably, the water level of the lowest point of the surface of the dock bottom is taken as a 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. Preferably, the dock floor has a first end and a second end, the surface of the dock floor sloping downwardly from the first end towards the second end, the water collection sump being provided at the second end. Preferably, the liquid level sensor includes a first sensor disposed at a first water level and a second sensor disposed at a second water level. Preferably, the two sides of the dock bottom surface are provided with water flowing tanks, the inclination direction of the water flowing tanks is consistent with that of the dock bottom surface, and the air blowing direction of the high-pressure air of the air blowing assembly faces the water flowing tanks and the water collecting tanks. Preferably, the surface of the dock floor is inclined from the middle to both sides in the width direction of the dock floor. Preferably, the blowing direction of the high-pressure air of the blowing assembly is toward the water collection tank. Preferably, the blowing assembly comprises a first main pipeline and a branch pipeline, wherein one end of the first main pipeline is connected with a high-pressure air source, the other end of the first main pipeline is plugged, the first main pipeline extends along the length direction of the bottom surface of the dock, the branch pipeline is fixedly connected with the pipe body of the first main pipeline, the branch pipeline forms an angle with the first main pipeline, and a plurality of first air outlets are arranged at intervals along the extending direction of the branch pipeline. Preferably, the blowing assembly further comprises a second main pipe, the second main pipe is parallel to the first main pipe, the first main pipe is provided with two pipes, the two pipes are respectively arranged on two sides of the second main pipe, a transition pipe is arranged between an air outlet end of the second main pipe and an air inlet end of the first main pipe, a high-pressure air source is connected with the air inlet end of the second main pipe along the extending direction of the second main pipe, and a plurality of second air outlets are arranged at intervals on the second main pipe. The underwater dredging mechanism has the beneficial effects that the underwater dredging mechanism automatically detects the water depth condition and controls the opening and closing of the water suction pump and the high-pressure air p