Underwater handheld suction dredger and use method thereof

Abstract

The invention provides an underwater handheld suction dredger and a using method, and belongs to the technical field of underwater dredging equipment. Comprising a pump shell, a pump cavity is formed in the pump shell, and the pump cavity forms a cavity for a mud-water mixture to flow and is used for guiding suction and discharge of the mud-water mixture; the pneumatic device is arranged on the pump shell, and the pneumatic device takes compressed air as a power medium to drive a working part in the pump cavity to rotate, so that negative pressure is formed in the pump cavity and is used for providing continuous suction force; the integrated suction head is connected to the input end of the pump shell, a sludge suction channel and a flushing channel which are independent of each other and physically isolated are arranged in the integrated suction head, the sludge suction channel is used for sucking a sludge-water mixture under the negative pressure effect, and the flushing channel is used for introducing external high-pressure water flow to impact and loosen hardened sludge. According to the invention, the operation reliability and the operation flexibility under the complex underwater working condition are obviously enhanced.

Description

Technical Field

[0001] This invention relates to the field of underwater dredging equipment technology, and in particular to an underwater handheld dredging machine and its usage method. Background Technology

[0002] Underwater dredging is a crucial component of port dredging, reservoir protection, and emergency rescue operations. The need for precise, localized cleaning is increasingly prominent, especially in narrow and complex areas such as pipeline trenches, shipwreck compartments, and around equipment foundations. In such scenarios, large suction dredgers or fixed dredging equipment cannot enter the work area due to size limitations, necessitating divers using handheld equipment to complete the work.

[0003] Currently, underwater handheld tools used by divers mainly fall into two categories: general-purpose underwater tools driven by electric or hydraulic motors, and handheld dredging devices with single functions. However, both types of equipment have significant technical shortcomings in actual deep-water operations, specifically in the following aspects; First, regarding the power system, electric drive poses risks of power attenuation and insulation safety in deep-water, high-pressure environments. As water depth increases, external hydrostatic pressure rises continuously, increasing the pressure differential that the electric motor's sealing structure must withstand. If the seal fails, water infiltration can lead to short circuits in the windings or even electric shock, threatening the safety of divers. While hydraulic drive provides sufficient power, its operating system requires a hydraulic pump station, high-pressure oil pipes, and return oil lines. The entire piping system is bulky and heavy, severely limiting the diver's mobility and making it difficult to operate flexibly in confined spaces. Furthermore, hydraulic oil leaks can cause underwater environmental pollution.

[0004] Secondly, in terms of functional design, existing equipment such as breaker picks or spray guns can only disturb the surface layer of silt and cannot effectively remove it; while the few designs with suction functions have simple suction head structures and lack the ability to break through obstacles. When encountering high-density, compacted silt formed over a long period of time, they are easily blocked by the compacted silt, resulting in low work efficiency. The above-mentioned equipment generally suffers from the problem of separating the flushing and suction functions, requiring divers to frequently change tools or interrupt operations to clear blockages, which seriously reduces the overall silt removal efficiency.

[0005] Third, in terms of connection reliability, the connection between the mud outlet and the mud discharge hose of the existing equipment mostly adopts a simple clamp or thread structure, which is not stable enough in the underwater vibration environment and has the risk of loosening. Once the connection falls off, it will not only lead to the loss of mud discharge function and equipment failure, but the mud may also spread and pollute the underwater working environment, and may even lead to equipment failure or safety accidents.

[0006] Fourth, in terms of ease of operation, most existing equipment has not been ergonomically optimized for the special working conditions of divers wearing thick gloves and operating underwater. The handle design lacks consideration for adaptability to diving postures, resulting in difficult operation, inaccurate positioning, rapid energy depletion for divers, and limited effective working time.

[0007] In summary, existing underwater handheld dredging equipment has significant shortcomings in terms of power safety, flushing and suction efficiency, pipeline connection reliability, and ergonomics adaptability. There is an urgent need for a new type of underwater handheld sludge suction device that can comprehensively solve the above-mentioned technical problems. Summary of the Invention

[0008] This invention provides an underwater handheld sludge suction machine and its usage method, aiming to comprehensively solve the problems of insufficient power adaptability, low operating efficiency, and inadequate connection reliability and ease of operation faced under the limited conditions of having to use handheld equipment. The technical solution is as follows: In a first aspect, embodiments of the present invention provide an underwater handheld sludge suction machine, comprising: A pump casing, wherein a pump chamber is formed inside the pump casing, the pump chamber constituting a chamber for the flow of mud-water mixture, used to guide the intake and discharge of mud-water mixture; A pneumatic device is installed on the pump casing. The pneumatic device uses compressed air as the power medium to drive the working parts inside the pump chamber to rotate, thereby creating a negative pressure inside the pump chamber to provide continuous suction. An integrated suction head is connected to the input end of the pump casing. The integrated suction head is provided with a sludge suction channel and a flushing channel that are independent and physically isolated from each other. The sludge suction channel is used to suck up a sludge-water mixture under the negative pressure, and the flushing channel is used to introduce external high-pressure water flow to impact and loosen the hardened sludge, thereby providing independent channels for sludge suction and flushing operations respectively.

[0009] Optionally, the flushing channel and the outlet are located directly above the suction inlet of the sludge suction channel, and the water outlet direction of the flushing channel is parallel to the suction direction of the sludge suction channel, so that the high-pressure water flow can accurately impact the hardened sludge directly in front of the suction inlet along the suction direction of the sludge suction channel.

[0010] Optionally, the pump casing is provided with a mud inlet channel and a mud outlet channel; both the mud inlet channel and the mud outlet channel are connected to the pump chamber; the mud inlet channel is connected to the mud suction channel so that the mud-water mixture enters the pump chamber from the mud suction channel through the mud inlet channel; the mud outlet channel is used to discharge the mud-water mixture accelerated by the pump chamber to an external mud discharge pipeline.

[0011] Optionally, the sidewalls of the mud inlet channel and the mud outlet channel are connected to the inner wall of the pump chamber with rounded corners to reduce turbulence loss and flow resistance of the mud-water mixture at the junction of the channel and the pump chamber.

[0012] Optionally, the pneumatic device includes a pneumatic rotary drive and an impeller; the pneumatic rotary drive is fixedly mounted on one side of the pump casing; the impeller is located inside the pump cavity; the shaft of the impeller is rotatably connected to the inner wall of the pump cavity; the shaft of the impeller is drively connected to the output end of the pneumatic rotary drive, and the pneumatic rotary drive drives the impeller to rotate at high speed inside the pump cavity to generate the negative pressure.

[0013] Optionally, a cover plate is detachably installed on one side of the pump casing. Deep groove ball bearings for supporting the impeller shaft are provided on the cover plate and on the inner side wall of the pump cavity opposite to the cover plate. The two ends of the impeller shaft are respectively supported and positioned in the pump casing by the deep groove ball bearings to ensure the concentricity and operational stability of the impeller when it rotates at high speed.

[0014] Optionally, the air inlet and exhaust ends of the pneumatic rotary drive device are both connected to connectors, which are quick-release elbow connectors, used to connect external air supply lines and exhaust lines respectively, so as to realize the input and discharge of compressed air.

[0015] Optionally, the mud discharge channel is detachably connected to an interface on the side away from the pump chamber. At least two O-rings are provided on the inner side of the interface. The O-rings are arranged at intervals along the axial direction of the interface to improve the sealing reliability of the connection between the interface and the mud discharge channel under underwater vibration conditions.

[0016] Optionally, a U-shaped handle is provided on the side of the pump housing away from the integrated suction head.

[0017] Secondly, embodiments of the present invention also provide a method for using an underwater handheld sludge suction machine, comprising the following steps: Connect the air supply line to the air inlet of the pneumatic rotary drive device via a connector, connect the sludge discharge line to the interface, and connect the high-pressure water source to the flushing channel of the integrated suction head. Open the air supply line, and compressed air enters the pneumatic rotary drive device through the connector, driving the impeller to rotate at high speed and creating negative pressure in the pump chamber; Hold the sludge suction machine with the U-shaped handle and aim the integrated suction head at the area to be dredged; When the high-pressure water source is turned on, the high-pressure water jet is ejected from the outlet of the flushing channel, impacting and loosening the hardened sludge; the loosened mud-water mixture is sucked into the pump chamber through the suction channel and the inlet channel under negative pressure, accelerated by the impeller, and then discharged through the outlet channel, and finally discharged in a directional manner from the sludge discharge pipe connected to the interface. After the sludge suction is completed, shut off the high-pressure water source and the air supply line. After the residual fluid in the line is discharged, disconnect the sludge discharge line, the air supply line and the high-pressure water line in sequence.

[0018] The beneficial effects of the technical solutions provided by the embodiments of the present invention include at least the following: By using a pneumatic device as the power source and compressed air as the power medium, the insulation risk and power attenuation problem of electric drive in deep water environment are effectively avoided. At the same time, the dependence of hydraulic drive on bulky external pipelines is eliminated. Even if compressed air leaks, it will not cause underwater environmental pollution or electric shock hazard. It provides stable and safe power for the equipment to adapt to the high pressure environment of deep water, and significantly enhances the reliability and operational flexibility of operation under complex underwater conditions.

[0019] The integrated suction head achieves simultaneous and continuous flushing and suction operations by establishing independent suction and flushing channels, eliminating the need for divers to frequently change tools or interrupt operations for dredging. The high-pressure water jet from the flushing channel effectively impacts and breaks down hardened sludge directly in front of the suction inlet, creating optimal conditions for efficient suction and fundamentally solving the problem of easy clogging in existing equipment suction heads. In particular, the layout design, where the water outlet of the flushing channel is located directly above the suction inlet of the suction channel, ensures that the impact area of ​​the water flow and the suction area highly overlap, maximizing the synergistic effect of flushing and suction.

[0020] The interface, connector, and cover plate form a quick-release structure. The interface has built-in double O-ring seals, which not only ensures quick and reliable connection and disconnection of the mud discharge pipe and the air supply pipe, but also ensures the sealing reliability of the connection in underwater vibration environment, avoiding the risk of loosening and failure. The redundant sealing design of the double O-rings provides an additional safety margin; even if one seal wears out, the other can still maintain its sealing function.

[0021] The U-shaped handle, integrated into the pump housing, enhances the stability and ease of handheld operation, reduces the diver's physical exertion, and extends effective working time. The U-shaped handle allows divers to use multiple grip methods, either with one or two hands, to adapt to different working postures.

[0022] The cover plate is detachably connected by hexagonal flower-shaped pan head screws, allowing the pump chamber to be opened for maintenance without disassembling the entire machine to inspect core components such as the impeller and bearings. The modular design significantly reduces the difficulty and time of maintenance after high-intensity underwater use. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A partial cross-sectional isometric view of the underwater handheld sludge suction machine provided in an embodiment of the present invention; Figure 2 Rear axonometric view of the underwater handheld sludge suction machine provided in an embodiment of the present invention; Figure 3 This is a front view of the underwater handheld sludge suction machine provided in an embodiment of the present invention; Figure 4 A rear view of the underwater handheld sludge suction machine provided in an embodiment of the present invention; Figure 5 A top view of the underwater handheld sludge suction machine provided in an embodiment of the present invention; Figure 6 A side view of an underwater handheld sludge suction machine provided in an embodiment of the present invention; Figure 7 This is a partial sectional axonometric view of the pump casing showing the flow channel structure provided in an embodiment of the present invention; Figure 8 Exploded isometric view of the core components of the underwater handheld sludge suction machine provided in the embodiment of the present invention; Figure 9 This is a partial sectional axonometric view of the internal flow channel of the pump casing provided in an embodiment of the present invention.

[0025] In the diagram: 1-Pump casing; 2-Inlet mud channel; 3-Outlet mud channel; 4-Cover plate; 5-Pneumatic rotary drive device; 6-Impeller; 7-U-shaped handle; 8-Integrated suction head; 9-Suction mud channel; 10-Flushing water channel; 11-Connector; 12-Deep groove ball bearing; 13-Interface; 14-O-ring seal; 15-Hexagon socket head cap screw. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0027] Example 1 like Figures 1 to 9As shown, this embodiment of the invention provides an underwater handheld sludge suction machine, aiming to comprehensively solve the problems of insufficient power adaptability, low operating efficiency, and inadequate connection reliability and ease of operation faced under the limited conditions of having to use handheld equipment. It includes: the underwater handheld sludge suction machine provided in this embodiment comprises a pump housing 1, a pneumatic device 5, an impeller 6, a U-shaped handle 7, and an integrated suction head 8. The pump housing 1 and the U-shaped handle 7 are integrally molded, forming the main load-bearing structure of the equipment. This integral molding design has been ergonomically optimized for the special working conditions of divers wearing thick gloves. The gripping part of the U-shaped handle 7 adopts an appropriately enlarged cross-sectional size and a rounded transition contour, enabling divers to stably hold the equipment and perform precise positioning.

[0028] like Figure 1 , Figure 7 and Figure 9 As shown, a pump chamber is formed inside the pump casing 1, which constitutes a cavity for the flow of the mud-water mixture, guiding the intake and discharge of the mixture. The pump casing 1 also contains an inlet mud channel 2 and an outlet mud channel 3, both of which are connected to the pump chamber. The sidewalls of the inlet mud channel 2 and the outlet mud channel 3 are smoothly connected to the inner wall of the pump chamber using rounded corners to reduce turbulence losses and flow resistance at the junction of the mud-water mixture and the channel. Specifically, the radius of curvature of the rounded corner transition is optimized based on the cross-sectional dimensions of the channel and the flow characteristics of the mud-water mixture, allowing the flow direction of the mixture to change smoothly at the junction. This rounded corner transition design effectively avoids local eddies and turbulence at the corners of the channel, reduces resistance losses during the flow of the mud-water mixture, improves suction efficiency, and reduces the risk of particulate matter deposition and blockage at the corners of the channel.

[0029] A pneumatic device is installed on the pump casing 1. The pneumatic device uses compressed air as the power medium to drive the working parts inside the pump chamber to rotate, thereby creating a negative pressure inside the pump chamber to provide continuous suction. The pneumatic device includes a pneumatic rotary drive device 5 and an impeller 6.

[0030] A pneumatic rotary drive device 5 is fixedly installed on one side of the pump casing 1. The pneumatic rotary drive device 5 is a pneumatic rotor motor, serving as the power source for the equipment. In this embodiment, the rated speed of the pneumatic rotor motor is 2180 rpm. Compressed air is used as the power medium. Its working principle is as follows: compressed air from the surface air supply station is delivered to the pneumatic rotor motor through the air supply pipeline, driving the eccentric rotor inside the motor to rotate and generate torque. Since compressed air is a gaseous medium, there is no risk of insulation breakdown in deep-water, high-pressure environments. Even if a pipeline leaks, only air is released, without causing environmental pollution. This effectively avoids the insulation risk and power attenuation problems of electric drives in deep-water, high-pressure environments, while also eliminating the dependence on bulky external pipelines for hydraulic drives. The air inlet end of the pneumatic rotor motor 5 is connected to an S-type external threaded pipe elbow 11 for connecting to an external air supply pipeline.

[0031] like Figure 1 , Figure 7 and Figure 8 As shown, the impeller 6 is housed within the pump chamber. The shaft of the impeller 6 is rotatably connected to the inner wall of the pump chamber. The shaft of the impeller 6 is also connected to the output end of the pneumatic rotary drive device 5. The pneumatic rotary drive device 5 drives the impeller to rotate within the pump chamber to generate negative pressure. A cover plate 4 is detachably installed on one side of the pump casing 1. Deep groove ball bearings 12 for supporting the shaft of the impeller 6 are provided on the cover plate 4 and on the inner wall of the pump chamber opposite to the cover plate 4. The shaft of the impeller 6 is supported and positioned within the pump casing 1 by the deep groove ball bearings 12 located at both ends of the impeller 6 to ensure concentricity and operational stability when the impeller 6 rotates at high speed.

[0032] A cover plate 4 is detachably installed on one side of the pump casing 1. Specifically, the cover plate 4 is detachably fastened to the pump casing 1 by multiple hexagonal pan head screws 15. A sealing mating surface is formed between the cover plate 4 and the pump casing 1 to ensure the structural integrity and sealing of the pump cavity, and also to facilitate the maintenance and repair of the equipment.

[0033] like Figure 1 and Figure 7As shown, the integrated suction head 8 is detachably connected to the pump housing 1 via a flange. The integrated suction head 8 is connected to the input end of the pump housing 1. The integrated suction head 8 is provided with a sludge suction channel 9 and a flushing channel 10 that are independent and physically isolated from each other. The sludge suction channel 9 is used to suck up the mud-water mixture under negative pressure. The flushing channel 10 is used to introduce external high-pressure water flow to impact and loosen the hardened sludge, providing independent channels for sludge suction and flushing operations respectively, avoiding mutual interference between the sludge suction and flushing operations. The integrated suction head 8 is connected to the front sludge inlet channel 2 of the pump housing 1. The sludge inlet channel 2 of the pump housing 1 is connected to the sludge suction channel 9 of the integrated suction head 8 and is detachably connected to the pump housing 1. The sludge suction channel 9 is connected to the sludge inlet channel 2 of the pump casing 1. The flushing channel 10 is equipped with an independent external high-pressure water source interface. The flushing channel 10 is connected to the high-pressure water pipe through the external high-pressure water source interface. The connection between the external high-pressure water source interface and the high-pressure water pipe can be made by connecting flange or threaded connection, etc., as long as the connection between the external high-pressure water source interface and the high-pressure water pipe is detachable. The water flow is delivered by the high-pressure water pump, and then delivered to the flushing channel 10 through the high-pressure water pipe. Finally, the flushing channel 10 ejects the water flow. It should be further noted that the flushing channel 10 is designed to make the ejected water flow a concentrated straight line, thereby ensuring the accuracy and efficiency of flushing.

[0034] The outlet of the flushing channel 10 is located directly above the suction inlet of the sludge suction channel 9, and the outlet direction of the flushing channel 10 is parallel to the suction direction of the sludge suction channel 9. This allows the high-pressure water flow to precisely impact the hardened sludge directly in front of the suction inlet along the suction direction of the sludge suction channel 9. This design enables the high-pressure water flow ejected from directly above to most effectively impact and break down the hardened sludge directly in front of the suction inlet, creating optimal conditions for efficient suction and fundamentally solving the problem of easy clogging of the suction head in existing equipment.

[0035] Both the inlet and outlet ends of the pneumatic rotary drive device 5 are connected to connectors 11. The connectors are quick-release elbow connectors, which are used to connect the external air supply line and the exhaust line, respectively, to realize the input and discharge of compressed air. Specifically, they are S-type external threaded pipe elbow connectors. Two S-type external threaded pipe elbow connectors are connected to the air inlet pipe and the exhaust pipe, respectively, thereby providing a stable channel for gas flow.

[0036] A detachable interface 13 is connected to the side of the sludge discharge channel 3 away from the pump chamber. Interface 13 is specifically a KY-type threaded connector. At least two O-rings 14 are provided on the inner side of interface 13, spaced apart along the axial direction of interface 13, to improve the sealing reliability of the connection between interface 13 and the sludge discharge channel 3 under underwater vibration conditions. Specifically, the KY-type threaded connector is installed at the end of the sludge discharge channel 3 at the rear of the pump casing 1 for connecting to an external sludge discharge pipeline. The KY-type threaded connector has two O-rings 14 inside to ensure a reliable seal at the connection of the sludge discharge pipeline, preventing loosening under underwater vibration conditions. The KY-type threaded connector and the S-type external threaded pipe elbow together constitute the quick-release structure of the equipment, enabling quick and reliable connection and disassembly of the sludge discharge pipe and the air supply pipeline.

[0037] A U-shaped handle 7 is located on the side of the pump housing 1 furthest from the integrated suction head 8, and the pump housing 1 and the U-shaped handle 7 are integrally formed. The opening of the U-shaped handle 7 faces the rear of the equipment, allowing the diver to pass one or both hands through the U-shaped opening and grasp the crossbeam of the handle, forming a stable grip posture. Compared with traditional straight or T-shaped handles, the U-shaped structure provides greater hand movement space and more diverse grip angle options, allowing the diver to flexibly adjust the grip position according to different working postures and dredging directions without frequently releasing and re-gripping the equipment.

[0038] Working principle Reference Figures 1 to 9 The working principle of the underwater handheld sludge suction machine provided in this embodiment is as follows: When the equipment is working, compressed air from the water surface air supply station enters the pneumatic rotor motor through the S-type external threaded pipe elbow, driving the eccentric rotor inside the motor to rotate and generate torque, thus driving the motor to rotate. The motor drives the impeller 6 to rotate at high speed. The impeller blades do work on the fluid in the pump chamber, throwing the fluid radially out and creating a partial vacuum in the central area of ​​the impeller, that is, creating negative pressure in the pump chamber. This negative pressure is transmitted through the sludge inlet channel 2 to the sludge suction channel 9 of the integrated suction head 8, generating a continuous suction force at the suction inlet of the sludge suction channel 9.

[0039] Divers hold the device with a U-shaped handle 7 and aim the integrated suction head 8 at the area to be cleaned.

[0040] After the high-pressure water source is turned on, the water pump delivers water through the high-pressure water pipe into the flushing channel 10. The high-pressure water jet is ejected from the outlet of the flushing channel 10. Because the outlet is located directly above the inlet and the water flow direction is parallel to the inlet direction, the high-pressure water jet can accurately impact and loosen the hardened sludge directly in front of the inlet. The tapered nozzle structure of the flushing channel 10 keeps the ejected water jet in a highly concentrated straight line shape, with strong penetrating power, which can effectively break up the high-density hardened layer formed by long-term deposition.

[0041] Subsequently, the loosened mud-water mixture is drawn into the pump chamber through the suction channel 9 and the inlet channel 2 under the negative pressure of the pump chamber. After being accelerated by the impeller 6, it passes through the outlet channel 3 and is finally discharged directionally to the designated sludge collection area through the sludge discharge pipe connected to the KY-type threaded interface. The entire flushing and suction process is carried out simultaneously and continuously. While the high-pressure water flow continuously impacts the sludge in front, the negative pressure continuously sucks away the loosened mud-water mixture, forming a highly efficient "flushing and suction" dredging working mode. Divers can adjust the impeller speed and suction force by adjusting the air supply pressure and the impact force by adjusting the outlet pressure of the high-pressure water source, thus flexibly dealing with sludge of different degrees of compaction.

[0042] Through the above-described process, this embodiment achieves simultaneous and continuous flushing and suction operations, significantly improving the efficiency of underwater dredging operations.

[0043] Maintenance methods Reference Figure 8 The core component decomposition relationship shown in this embodiment demonstrates the ease of equipment maintenance. During maintenance, first disconnect the external piping connections of connector 11 and interface 13, then unscrew the hexagonal pan head screws 15 to open the cover plate 4, allowing for inspection or replacement of internal components such as the impeller 6 and deep groove ball bearing 12. Since the impeller 6 is supported between the cover plate 4 and the pump chamber wall by the deep groove ball bearing 12, the impeller 6, along with the bearing on the side of the cover plate, can be removed after opening the cover plate 4 without disassembling the main pump casing structure. When replacing the bearing, simply remove the deep groove ball bearing 12 from the shaft and press in a new bearing. This modular design ensures structural strength and sealing during operation while greatly simplifying the maintenance process after intensive underwater use.

[0044] Example 2 This embodiment, based on Embodiment 1, provides a method for using an underwater handheld sludge suction machine, including the following steps: Connect the air supply line to the air inlet of the pneumatic rotor motor via the S-type external threaded pipe elbow, connect the sludge discharge line to the KY-type pipe thread interface, and connect the high-pressure water source to the flushing channel 10 of the integrated suction head 8. During the connection process, use the quick-release structure to achieve rapid docking and check the reliability of the seals at each connection point. Specifically, first screw the S-type external threaded pipe elbow into the air inlet of the pneumatic rotor motor, manually tighten it until you feel significant resistance, and then tighten it about 1 / 4 turn to ensure a seal; then insert the sludge discharge hose into the KY-type pipe thread interface and push it into place, where the double O-ring seals automatically complete the seal; finally, connect the high-pressure water pipe to the external high-pressure water source interface of the flushing channel 10 and tighten it.

[0045] With the air supply line opened, compressed air enters the pneumatic rotor motor through the S-type external threaded pipe elbow, driving impeller 6 to rotate at high speed. Impeller 6 generates negative pressure within the pump chamber, enabling the equipment to perform suction.

[0046] Divers hold the sludge suction machine by hand using the U-shaped handle 7, and with the help of the integrated ergonomic design, they hold the device stably and aim the integrated suction head 8 at the area to be dredged.

[0047] When the high-pressure water source is activated, a high-pressure water stream is ejected from the outlet of the flushing channel 10, impacting and loosening the hardened sludge. Because the outlet is located directly above the suction inlet, the water flow can precisely target the area to be cleaned. The loosened mud-water mixture, under negative pressure, is drawn into the pump chamber through the suction channel 9 and the inlet channel 2. After being accelerated by the impeller 6, it flows through the outlet channel 3 and is finally discharged directionally from the discharge pipe connected to the KY-type threaded interface. Divers can adjust the flushing pressure and the suction machine's movement speed according to the degree of sludge compaction to achieve efficient sludge removal.

[0048] After completing the dredging operation, first shut off the high-pressure water source. After the residual water in the flushing channel 10 has been drained, shut off the air supply line to stop the impeller 6 from rotating. Disconnect the sludge discharge line, air supply line, and high-pressure water line in sequence, and use the quick-release structure to achieve rapid disassembly.

[0049] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0050] The above description is merely an optional embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention. Those skilled in the art, after seeing the core design of this solution, who achieve similar functions by adjusting component shapes, changing interface types, or optimizing flow channel details, will also be considered to be within the scope of protection of this solution, as long as these modifications still conform to the core innovative points of "pneumatic drive, integrated flushing and suction, quick-release interface, and handheld operation."

Claims

1. An underwater handheld sludge suction machine, characterized in that, include: Pump casing (1), a pump chamber is formed inside the pump casing (1), the pump chamber constitutes a chamber for the flow of mud-water mixture, and is used to guide the intake and discharge of mud-water mixture; A pneumatic device is installed on the pump casing (1). The pneumatic device uses compressed air as the power medium to drive the working parts inside the pump chamber to rotate, thereby forming a negative pressure inside the pump chamber to provide continuous suction. An integrated suction head (8) is connected to the input end of the pump casing (1). The integrated suction head (8) is provided with a sludge suction channel (9) and a flushing channel (10) that are independent and physically isolated from each other. The sludge suction channel (9) is used to suck up a mixture of mud and water under the negative pressure. The flushing channel (10) is used to introduce external high-pressure water flow to impact and loosen the hardened sludge, thereby providing independent channels for sludge suction and flushing operations respectively.

2. The underwater handheld sludge suction machine according to claim 1, characterized in that, The flushing channel (10) and the outlet are located directly above the suction port of the sludge suction channel (9), and the water outlet direction of the flushing channel (10) is parallel to the suction direction of the sludge suction channel (9), so that the high-pressure water flow can accurately impact the hardened sludge directly in front of the suction port along the suction direction of the sludge suction channel (9).

3. An underwater handheld sludge suction machine according to claim 1 or 2, characterized in that, The pump casing (1) is provided with a mud inlet channel (2) and a mud outlet channel (3); both the mud inlet channel (2) and the mud outlet channel (3) are connected to the pump chamber; the mud inlet channel (2) is connected to the mud suction channel (9) so that the mud-water mixture enters the pump chamber from the mud suction channel (9) through the mud inlet channel (2); the mud outlet channel (3) is used to discharge the mud-water mixture accelerated by the pump chamber to the external mud discharge pipeline.

4. The underwater handheld sludge suction machine according to claim 3, characterized in that, The sidewalls of the mud inlet channel (2) and the mud outlet channel (3) are connected to the inner wall of the pump chamber by a rounded corner smooth transition.

5. The underwater handheld sludge suction machine according to claim 1, characterized in that, The pneumatic device includes a pneumatic rotary drive device (5) and an impeller (6); the pneumatic rotary drive device (5) is fixedly installed on one side of the pump casing (1); the impeller (6) is located inside the pump cavity; the shaft of the impeller (6) is rotatably connected to the inner wall of the pump cavity; the shaft of the impeller (6) is drively connected to the output end of the pneumatic rotary drive device (5), and the pneumatic rotary drive device (5) drives the impeller (6) to rotate at high speed inside the pump cavity to generate the negative pressure.

6. The underwater handheld sludge suction machine according to claim 5, characterized in that, A cover plate (4) is detachably installed on one side of the pump casing (1). Deep groove ball bearings (12) for supporting the shaft of the impeller (6) are provided on the cover plate (4) and on the inner side wall of the pump cavity opposite to the cover plate (4). The two ends of the shaft of the impeller (6) are respectively supported and positioned in the pump casing (1) by the deep groove ball bearings (12).

7. An underwater handheld sludge suction machine according to claim 5 or 6, characterized in that, The air inlet and exhaust ends of the pneumatic rotary drive device (5) are both connected to connectors (11), which are quick-release elbow connectors used to connect external air supply lines and exhaust lines respectively.

8. An underwater handheld sludge suction machine according to claim 3 or 4, characterized in that, The mud discharge channel (3) is detachably connected to an interface (13) on the side away from the pump chamber. At least two O-rings (14) are provided on the inner side of the interface (13), and the O-rings (14) are arranged at intervals along the axial direction of the interface (13).

9. The underwater handheld sludge suction machine according to claim 1, characterized in that, A U-shaped handle (7) is provided on the side of the pump housing (1) away from the integrated suction head (8).

10. A method of using an underwater handheld sludge suction machine as described in any one of claims 1 to 9, characterized in that, Includes the following steps: Connect the air supply pipeline to the air inlet of the pneumatic rotary drive device (5) through the connector (11), connect the sludge discharge pipeline to the interface (13), and connect the high-pressure water source to the flushing channel (10) of the integrated suction head (8). When the air supply line is turned on, compressed air enters the pneumatic rotary drive device (5) through the connector (11), driving the impeller (6) to rotate at high speed and forming a negative pressure in the pump chamber; Hold the sludge suction machine by the U-shaped handle (7) and aim the integrated suction head (8) at the area to be dredged; When the high-pressure water source is turned on, the high-pressure water flow is ejected from the outlet of the flushing channel (10), impacting and loosening the hardened silt; the loosened mud-water mixture is sucked into the pump chamber through the suction channel (9) and the mud inlet channel (2) under the action of negative pressure, accelerated by the impeller (6) and passed through the mud outlet channel (3), and finally discharged in a direction from the mud discharge pipe connected to the interface (13); After the sludge suction is completed, shut off the high-pressure water source and the air supply line. After the residual fluid in the line is discharged, disconnect the sludge discharge line, the air supply line and the high-pressure water line in sequence.

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