CN-121976583-A - Underwater handheld suction dredge and use method thereof

Abstract

The invention provides an underwater handheld suction dredge and a use method thereof, and belongs to the technical field of underwater dredging equipment. The integrated suction head is connected to the input end of the pump shell, a mud sucking channel and a flushing channel which are mutually independent and physically isolated are arranged in the integrated suction head, the mud sucking channel is used for sucking the mud water mixture under the action of the negative pressure, and the flushing channel is used for introducing external high-pressure water flow to impact and loosen hardened sludge.

Inventors

• SONG XUEMIN
• LU FUHUA
• ZHANG DI
• LIU WEIQIN

Assignees

• 武汉理工大学

Dates

Publication Date

20260505

Application Date

20260313

Claims (10)

1. 1. An underwater handheld suction dredge, comprising: The pump comprises a pump shell (1), wherein a pump cavity is formed in the pump shell (1), and the pump cavity forms a chamber for flowing a mud-water mixture and is used for guiding the suction and the discharge of the mud-water mixture; The pneumatic device is arranged on the pump shell (1), and the pneumatic device uses compressed air as a power medium to drive working parts in the pump cavity to rotate, so that negative pressure is formed in the pump cavity and is used for providing continuous suction; The integrated suction head (8) is connected to the input end of the pump shell (1), a suction channel (9) and a flushing channel (10) which are mutually independent and physically isolated are arranged in the integrated suction head (8), the suction channel (9) is used for sucking a mud-water mixture under the action of negative pressure, and the flushing channel (10) is used for introducing external high-pressure water flow to impact and loosen plate sludge, so that independent channels are respectively provided for suction operation and flushing operation.
2. 2. The underwater handheld suction dredge according to claim 1, characterized in that the flushing channel (10) and the water outlet are arranged right above the suction inlet of the suction dredge (9), and the water outlet direction of the flushing channel (10) is parallel to the suction direction of the suction dredge (9), so that high-pressure water flow can precisely impact the hardened sludge right in front of the suction inlet along the suction direction of the suction dredge (9).
3. 3. The underwater handheld suction dredge according to claim 1 or 2, wherein a mud inlet flow passage (2) and a mud outlet flow passage (3) are arranged in the pump shell (1), the mud inlet flow passage (2) and the mud outlet flow passage (3) are communicated with a pump cavity, the mud inlet flow passage (2) is communicated with a mud suction passage (9) so that a mud water mixture enters the pump cavity from the mud suction passage (9) through the mud inlet flow passage (2), and the mud outlet flow passage (3) is used for guiding the mud water mixture accelerated by the pump cavity to an external mud discharge pipeline.
4. 4. An underwater handheld suction dredge according to claim 3, characterized in that the side walls of the mud inlet flow channel (2) and the mud outlet flow channel (3) are connected with the inner wall of the pump cavity by adopting a round angle smooth transition.
5. 5. The underwater handheld suction dredge according to claim 1 is characterized in that the pneumatic device comprises a pneumatic rotary driving device (5) and an impeller (6), the pneumatic rotary driving device (5) is fixedly arranged on one side of the pump shell (1), the impeller (6) is located in a pump cavity, a rotating shaft of the impeller (6) is rotatably connected with the inner wall of the pump cavity, the rotating shaft of the impeller (6) is in transmission connection with the output end of the pneumatic rotary driving device (5), and the pneumatic rotary driving device (5) drives the impeller (6) to rotate at a high speed in the pump cavity to generate negative pressure.
6. 6. The underwater handheld suction dredge according to claim 5, characterized in that a cover plate (4) is detachably mounted on one side of the pump casing (1), deep groove ball bearings (12) for supporting the rotating shaft of the impeller (6) are arranged on the cover plate (4) and on the inner side wall of the pump cavity opposite to the cover plate (4), and two ends of the rotating shaft of the impeller (6) are respectively supported and positioned in the pump casing (1) through the deep groove ball bearings (12).
7. 7. The underwater handheld suction dredge according to claim 5 or 6, characterized in that the air inlet end and the air outlet end of the pneumatic rotary driving device (5) are connected with connectors (11), and the connectors (11) are quick-release elbow connectors respectively used for connecting an external air supply pipeline and an external air outlet pipeline.
8. 8. An underwater handheld suction dredge according to claim 3 or 4, characterized in that the side of the dredge flow channel (3) away from the pump cavity is detachably connected with an interface (13), the inner side of the interface (13) is provided with at least two O-shaped sealing rings (14), and the O-shaped sealing rings (14) are arranged at intervals along the axial direction of the interface (13).
9. 9. An underwater handheld suction dredge according to claim 1, characterized in that the side of the pump housing (1) remote from the integrated suction head (8) is provided with a U-shaped handle (7).
10. 10. A method of using an underwater handheld suction dredge as claimed in any of claims 1 to 9, comprising the steps of: the air supply pipeline is connected with the air inlet end of the pneumatic rotary driving device (5) through a joint (11), the mud discharge pipeline is connected with a joint (13), and the high-pressure water source is connected with a flushing channel (10) of the integrated suction head (8); opening an air supply pipeline, enabling compressed air to enter a pneumatic rotary driving device (5) through a joint (11) to drive an impeller (6) to rotate at a high speed, and forming negative pressure in a pump cavity; The integrated suction head (8) is aligned to the area to be dredged by a U-shaped handle (7) and a hand-held mud suction machine; Starting a high-pressure water source, injecting high-pressure water flow from a water outlet of a flushing channel (10), impacting and loosening hardened sludge, sucking the loosened sludge water mixture into a pump cavity through a sludge suction channel (9) and a sludge inlet flow channel (2) under the action of negative pressure, accelerating through an impeller (6), and finally directionally discharging the loosened sludge water mixture from a sludge discharge pipe connected with an interface (13) through a sludge outlet flow channel (3); after the suction of the mud is completed, the high-pressure water source and the air supply pipeline are closed, and after the residual fluid in the pipeline is discharged, the mud discharge pipeline, the air supply pipeline and the high-pressure water pipeline are sequentially disconnected.

Description

Underwater handheld suction dredge and use method thereof Technical Field The invention relates to the technical field of underwater dredging equipment, in particular to an underwater handheld suction dredge and a use method thereof. Background The underwater dredging operation is a key link in port dredging, reservoir containment and emergency rescue, and especially in narrow and complex areas such as pipeline grooves, sunken ship cabins, equipment foundation peripheries and the like, the requirement for local accurate cleaning is increasingly outstanding. In such a scenario, a large dredger or stationary dredging device cannot access the working area due to volume limitations, and the work has to be done by a diver using a handheld device. Currently, underwater hand-held tools used by divers are mainly classified into two types, namely a general-purpose underwater tool driven by an electric or hydraulic motor and a hand-held dredging device with single function. However, both the above-mentioned devices have significant technical drawbacks in practical deep water operations, particularly in the following aspects; Firstly, in the aspect of a power system, the power attenuation and insulation safety risks exist in an electric driving mode in a deepwater high-pressure environment, as the water depth increases, the external hydrostatic pressure continuously increases, the sealing structure of an electric motor bears pressure difference and increases, once sealing fails, moisture infiltration can cause winding short circuit and even electric shock accidents to threaten the personal safety of divers, although the power is sufficient, a hydraulic pump station, a high-pressure oil pipe and an oil return pipeline are required to be arranged in a working system in the hydraulic driving mode, the whole set of pipeline system is huge and heavy and limited by a heavy external pipeline system, the mobility and flexibility of divers are greatly limited, flexible operation in a narrow space is difficult, and once hydraulic oil leaks, underwater environmental pollution is caused. Secondly, in terms of functional design, the existing equipment such as a crushing pick or a spray gun can only disturb the surface layer of the sludge and cannot realize effective removal, while few suction heads with suction functions are single in structure and lack of barrier breaking capability, and when high-density hardened sludge formed by long-term deposition is encountered, the suction heads are extremely easy to be blocked by the hardened sludge, so that the operation efficiency is low. The equipment has the common problem that the flushing and sucking functions are separated, and a diver needs to frequently replace tools or interrupt operation to dredge, so that the overall dredging efficiency is seriously reduced. Thirdly, in the aspect of connection reliability, the mud outlet of the existing equipment is connected with a mud discharging hose by adopting a simple clamp or thread structure, the stability of the existing equipment is insufficient under the underwater vibration environment, loose risks exist, once the connection part falls off, the mud discharging function is lost, the equipment is invalid, mud can be diffused to pollute the underwater operation environment, and even the equipment is invalid or safety accidents can be caused. Fourth, in terms of operational convenience, most of existing equipment does not carry out man-machine engineering optimization aiming at the special working conditions of wearing thick gloves and underwater operation by divers, and the design of handles lacks the adaptability consideration to the posture of diving operation, so that the control is laborious and inaccurate in positioning, the physical consumption of the divers is fast, and the effective operation time is limited. In summary, the existing underwater handheld dredging device has obvious shortcomings in the aspects of power safety, flushing and sucking cooperative efficiency, pipeline connection reliability, ergonomic suitability and the like, and a novel underwater handheld dredging device capable of comprehensively solving the technical problems is needed. Disclosure of Invention The embodiment of the invention provides an underwater handheld suction dredge and a using method thereof, aiming at comprehensively solving the problems of insufficient power adaptability, low operation efficiency, connection reliability and insufficient operation convenience under the limit condition that handheld equipment is required to be used. The technical scheme is as follows: In a first aspect, an embodiment of the present invention provides an underwater handheld suction dredge, including: The pump comprises a pump shell, wherein a pump cavity is formed in the pump shell, and the pump cavity forms a chamber for flowing a mud-water mixture and is used for guiding the suction and the discharge of the mud-water mixture; the pneumatic device is arran