Propulsion device and ship

Abstract

The utility model discloses a propulsion device and ship relates to ship technical field, wherein the propulsion device includes: pipeline and drive part, pipeline is connected to the hull, pipeline both ends are used for the water inletting and water outletting respectively. The driving part comprises a water pump and a transmission plate, the water pump communicates with the pipeline, and the transmission plate is used for providing power for the water pump and driving water flow to flow into the water pump from the pipeline and be sprayed out from one side of the ship body. The water pump is driven by treading the transmission plate, power of the transmission plate is converted to the water pump, the water pump is driven to pump water from the pipeline, water flow is pressurized to be sprayed out from one side of the ship body, so that propulsive force is provided for the ship body, the transmission plate and the water pump are matched to push the ship body to advance, the structure is simpler, the using effect is good, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of ship technology, and in particular to propulsion devices and ships having propulsion devices. Background Technology

[0002] A ship is a waterborne vehicle used for navigating on water. It can be used for various purposes, including transportation, fishing, military, and recreation. Ships vary in design and purpose and can be classified according to their function and use, such as fishing boats, pleasure boats, and civilian work vessels.

[0003] Ships typically consist of a hull and a propulsion system. The hull is the main structure of the ship, responsible for supporting the cargo and passengers and providing buoyancy to keep the ship afloat. The propulsion system is the device used to propel the ship forward or steer. Common propulsion systems employ traditional mechanical transmission methods, such as wheel pulleys and turbines, or use engines to drive propellers. However, these propulsion systems are relatively complex in structure and have high equipment costs. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a propulsion device that has the advantages of high power conversion efficiency and low cost in propulsion systems.

[0005] This utility model also proposes a ship having the above-mentioned propulsion device.

[0006] The propulsion device according to this utility model includes: a pipe connected to the hull, the two ends of the pipe being used for water inlet and water outlet respectively; a drive component, the drive component including a water pump and a transmission plate, the water pump being connected to the pipe, the transmission plate being used to provide power to the water pump, driving water to flow from the pipe into the water pump and spray out from one side of the hull.

[0007] The propulsion device according to this utility model has at least the following beneficial effects: the two ends of the pipe on the hull are used for water inlet and outlet, respectively. By stepping on the transmission plate to drive the water pump, the power of the transmission plate is converted into the water pump, which in turn drives the water pump to draw water from the pipe and pressurize the water flow to spray it out from one side of the hull, thereby providing propulsion for the hull. The combination of the transmission plate and the water pump to propel the hull results in a simpler structure, better performance, and greater practicality.

[0008] According to some embodiments of the present invention, the propulsion device includes a housing, a piston is movably connected to the housing, a water cavity is formed between the piston and the housing, and a transmission plate can drive the piston to move, thereby causing the volume of the water cavity to change, so as to realize the pumping and draining of water by the pump.

[0009] According to some embodiments of the present invention, the propulsion device includes two water pumps, and the pipeline includes an inlet pipe and an outlet pipe. The inlets of the two water pumps are connected to the inlet pipe, and the outlets of the two water pumps are connected to the outlet pipe.

[0010] According to some embodiments of the present invention, the propulsion device further includes a traction component, and two transmission plates are provided, each corresponding to a water pump. The traction component is used to connect the two transmission plates and drive the two transmission plates to move in opposite directions, so that one water pump pumps water and the other water pumps drain water.

[0011] According to some embodiments of the present invention, the propulsion device includes a traction rope and two guide rods. Each of the two guide rods is provided with a roller. Both transmission plates are located below the rollers. The transmission plates are slidably sleeved on the guide rods. The middle part of the traction rope is wound around the rollers. The two ends of the traction rope are respectively fixedly connected to the two transmission plates to drive the two transmission plates to move in opposite directions along the center line of the guide rods.

[0012] According to some embodiments of the present invention, the propulsion device is provided with an inlet tank and an outlet tank in the pipeline. The inlet tank is located at the bottom of the hull and has an inlet. The inlet is inclined downward toward the side away from the center of the hull and has a filter screen. The outlet tank is provided with a nozzle. The direction of travel of the hull is adjusted by controlling the opening orientation of the nozzle.

[0013] According to some embodiments of the present invention, the propulsion device is provided with a first one-way valve and a second one-way valve in the pipeline. The first one-way valve is provided on the communication path between the water inlet tank and the water pump to drive the water flow into the water pump in one direction. The second one-way valve is provided on the communication path between the water outlet tank and the water pump to drive the water flow out of the water pump in one direction.

[0014] According to some embodiments of the present invention, the propulsion device is provided with a manual ball valve in the pipeline. The manual ball valve is used to manually control the opening and closing of the pipeline and is located at the connection between the pipeline and the water pump.

[0015] According to some embodiments of the present invention, the propulsion device, both the pipe and the transmission plate are made of plastic.

[0016] The ship according to this utility model includes the propulsion device described in this utility model.

[0017] The ship according to this utility model has at least the following beneficial effects: The use of a transmission plate in conjunction with a water pump greatly simplifies the structure, reduces design and manufacturing costs, and makes the ship's internal layout more compact. It also achieves efficient power conversion, avoids energy loss in multiple stages of traditional propulsion systems, improves energy utilization, and enhances propulsion while saving energy.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the pipe structure of the propulsion device according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the drive component of the propulsion device according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the drive component of the propulsion device according to another embodiment of the present invention;

[0023] Figure 4 for Figure 2 An exploded view of the drive component is shown.

[0024] Figure 5 This is a schematic diagram of the traction assembly of the propulsion device according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the transmission plate of the propulsion device according to an embodiment of the present utility model;

[0026] Figure 7 This is a schematic diagram of the water inlet tank of the propulsion device according to an embodiment of the present invention.

[0027] Explanation of icon numbers:

[0028] Pipe 100; Inlet pipe 101; Outlet pipe 102; Inlet tank 110; Inlet 111; Filter screen 112; Connecting pipe 113;

[0029] Water tank 120; spray nozzle 121;

[0030] Control element 130; first check valve 131; second check valve 132; manual ball valve 133;

[0031] Drive component 200; water pump 210; housing 211; piston 212; push-pull rod 213;

[0032] Transmission plate 220; connecting ring 221; extension 222;

[0033] Traction assembly 230; guide rod 231; roller 2311; traction rope 232. Detailed Implementation

[0034] The embodiments of this utility model 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 this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 limitations on this utility model.

[0036] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of 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.

[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] A ship is a waterborne vehicle used for navigating on water. It can be used for various purposes, including transportation, fishing, military, and recreation. Ships vary in design and purpose and can be classified according to their function and use, such as fishing boats, pleasure boats, and civilian work vessels. The hull is the main structure of the ship, responsible for supporting the cargo and passengers and providing buoyancy to keep the ship afloat. The propulsion system is the device used to propel the ship forward or steer. Common propulsion systems use traditional mechanical transmission methods such as wheel pulleys or turbines, which are relatively complex in structure and have low transmission efficiency. Alternatively, they use electric motors to drive propellers as the propulsion device, which is costly and impractical.

[0040] Therefore, such as Figures 1 to 7 As shown, this is the propulsion device proposed in this utility model, including a pipe 100 and a drive component 200. The pipe 100 serves to transport fluid and is connected to the hull. The two ends of the pipe 100 are for water inlet and water outlet, respectively. An inlet tank 110 and an outlet tank 120 are respectively provided at both ends of the pipe 100. When the ship navigates on undulating water, the pressure and flow velocity of the external water body will change. The inlet tank 110 has a certain capacity to store water and can act as a buffer zone, making the water flow into the water pump 210 more stable. The drive component 200 includes a water pump 210 and a transmission plate 220. The drive component 200 and the pipe 100 can be connected via a connecting hose. The water pump 210 is connected to the pipe 100, its inlet is connected to the inlet tank 110, and its outlet is connected to the outlet tank 120. The transmission plate 220 provides power to the water pump 210, driving the water flow from the pipe 100 into the water pump 210. Water pump 210 pressurizes water and then delivers the pressurized water to outlet tank 120, from which it is ejected from one side of the hull. The high-speed water jet ejected from outlet tank 120 generates a reaction force on the ship, which propels it forward. Inlet tank 110 and outlet tank 120 are located at both ends of the hull's pipe 100. By stepping on the transmission plate 220, the water pump 210 is driven, converting its power into the pump's output. This pump draws water from inlet tank 110, pressurizes the water, and ejects it from outlet tank 120, thus providing propulsion for the ship. The combination of transmission plate 220 and water pump 210 propels the ship, resulting in a simpler structure, better performance, and greater practicality.

[0041] It should be noted that the pipe 100 includes, but is not limited to, circular pipe 100, rectangular pipe 100, composite pipe 100, or non-standard shaped pipe 100, such as elliptical, trapezoidal, or arc-shaped pipes. Preferably, this utility model uses a circular pipe 100 with a circular cross-section, which has excellent fluid transmission capacity and low fluid resistance. This type of pipe 100 is easy to manufacture and install, and has good structural strength. The inlet tank 110 and the outlet tank 120 are connected to each other by a circular straight pipe. When the water pump 210 is working, the water in the inlet tank 110 flows directly through the pipe 100 to the inlet, and after being pressurized by the water pump 210, it flows directly from the outlet to the outlet tank 120 without bends or turns, reducing energy loss during water flow transmission, improving driving efficiency, and having a simple structure.

[0042] It should be noted that, referring to Figure 2 As shown, the pipe 100 includes a connecting pipe 113 for connecting the water pump 210. The connecting pipe 113 is located below the water pump 210. The connecting pipes 113 can be spaced apart. The connecting pipes 113 and the water pump 210 can be connected by a bend. The bend can reduce the impact of water flow on the bend and reduce the space occupied by the drive component 200 in the longitudinal direction, ensuring that water flows smoothly into and out of the water pump 210.

[0043] In another embodiment of this utility model, referring to Figure 3 As shown, the connecting pipes 113 of the water pump 210 can be arranged side by side. The connecting pipes 113 and the water pump 210 are connected by straight pipes. The side-by-side arrangement of the connecting pipes 113 can achieve efficient layout in the limited space of the hull. This method can reduce the space occupied by the drive component 200 in the lateral direction.

[0044] Reference Figure 2 and Figure 4As shown, the water pump 210 includes a housing 211, with a piston 212 movably connected to the housing 211. A water cavity is formed between the piston 212 and the housing 211. A transmission plate 220 can drive the piston 212 to move. The water pump 210 is equipped with a push-pull rod 213, with its two ends connected to the transmission plate 220 and the piston 212, respectively. The transmission plate 220 moves linearly to drive the piston 212 to reciprocate, causing the volume of the water cavity to change, thereby realizing the pumping and draining of water by the water pump 210. When the transmission plate 220 pulls up, driving the piston 212 upward, the volume of the water cavity increases, the pressure decreases, and a certain degree of vacuum is formed. Water flows into the water pump 210 from the pipe 100 under atmospheric pressure. When the transmission plate 220 presses down, driving the piston 212 downward, the volume of the water pump 210 decreases, the water is compressed, the pressure increases, and the water is ejected from the outlet tank 120. The linear motion of the transmission plate 220 drives the water pump 210 to pump and drain water. The linear motion transmission method reduces energy loss in the intermediate complex transmission links, improves transmission efficiency, has fewer parts, and has a relatively simple and reliable structure.

[0045] In other embodiments (not shown in the figures), the transmission plate 220 and the piston 212 support are connected by a crank mechanism, which includes a connecting rod. The transmission plate 220 rotates in a circular motion, driving the piston 212 to reciprocate. When the transmission plate 220 rotates in a circular motion, it drives the connecting rod to move, causing the piston 212 to move upward. As the piston 212 moves upward, the volume of the water chamber increases, the pressure decreases, and a partial vacuum is formed. At this time, under the action of external atmospheric pressure, water is drawn into the water chamber. As the transmission plate continues to rotate, the piston 212 begins to move downward under the drive of the connecting rod. At this time, the volume of the water chamber gradually decreases, the water in the chamber is compressed, and the pressure increases. The water in the water chamber is discharged from the water pump 210 through the outlet. As the crank continues to rotate, the piston 212 continuously moves up and down, and the water intake and drainage processes are repeated, thereby realizing the function of continuous water pumping and drainage of the water pump 210.

[0046] refer to Figures 1 to 4 As shown, there are two water pumps 210. The pipeline 100 includes an inlet pipe 101 and an outlet pipe 102. The inlet pipe 101 connects to the inlet tank 110, and the outlet pipe 102 connects to the outlet tank 120. The inlet pipe 101 and the outlet pipe 102 are arranged side by side to reduce the space occupied by the hull, making the pipeline 100 more compact and improving the utilization rate of the hull space. The inlets of both water pumps 210 are connected to the inlet pipe 101, and the outlets of both water pumps 210 are connected to the outlet pipe 102. The inlet pipe 101 and the outlet pipe 102 are not connected to each other to ensure unidirectional water flow and avoid turbulence. The two water pumps 210 can flexibly adjust their working modes to optimize pressure and maintain the propulsion efficiency and stability of the ship.

[0047] Specifically, refer to Figures 4 to 6 As shown, the drive unit 200 also includes a traction assembly 230, which is used to move the transmission plate 220 to control different operating conditions of the water pump 210. Two transmission plates 220 are provided, each corresponding to a water pump 210. The traction assembly 230 connects the two transmission plates 220 and drives them to move in opposite directions; that is, while one transmission plate 220 moves downwards, the other transmission plate 220 is pulled upwards, allowing one water pump 210 to pump water while the other pumps water out. The different operating conditions between the two water pumps 210 achieve continuous and efficient power output, avoiding water flow interruptions or instability caused by uncoordinated power transmission. The structure is simple, significantly improving the stability and reliability of ship propulsion.

[0048] Furthermore, the traction assembly 230 includes a traction rope 232 and two guide rods 231. The arrangement direction of the two guide rods 231 is perpendicular to the arrangement direction of the two water pumps 210. The two guide rods 231 are disposed between the two water pumps 210. The structure between the guide rods 231 and the water pumps 210 is compact, which improves the space utilization between the water pumps 210 and reduces the space occupied by the hull. Each guide rod 231 is provided with a roller 2311. The roller 2311 is disposed at the end of the guide rod 231 away from the water pump 210. Both transmission plates 220 are located below the rollers 2311. The transmission plate 220 is provided with an extension 222. The extension 222 extends obliquely toward the guide rod 231 and is provided with a through hole. The transmission plate 220 is slidably sleeved on the guide rod 231, that is, the guide rod 231 passes through the through hole. The extension 222 is also equipped with a connecting ring 221. The middle part of the traction rope 232 is wound around the roller 2311, and the two ends of the traction rope 232 are respectively fixedly connected to the two transmission plates 220. That is, the ends of the traction rope 232 are wound around the connecting ring 221. The traction rope 232 uses the two rollers 2311 as fulcrums to drive the two transmission plates 220 to move in opposite directions along the center line of the guide rod 231. The opposite movement of the two transmission plates 220 is achieved through the connection of the traction rope 232, which ensures that the pumping and drainage conditions of the two water pumps 210 are coordinated and consistent. The structure is simple and improves the working efficiency and stability of the entire propulsion device.

[0049] It should be noted that the traction rope 232 can be a steel wire rope, fiber rope or chain. There are no restrictions on the specific material used for the traction rope 232, as long as the material has sufficient strength to avoid breakage during the traction process and to meet the traction requirements of the transmission plate 220, so as to provide reliable power transmission for the traction assembly 230.

[0050] Reference Figures 1 to 4As shown, it can be understood that the pipe 100 is equipped with a first check valve 131 and a second check valve 132. The first check valve 131 is located on the communication path between the inlet tank 110 and the water pump 210 to drive water flow unidirectionally into the water pump 210. When the water pump 210 operates and generates suction, the first check valve 131 is opened, and water flows from the inlet pipe 101 into the water pump 210. The second check valve 132 is located on the communication path between the outlet tank 120 and the water pump 210 to drive water flow unidirectionally out of the water pump 210. When the water pump 210 generates pressure to discharge water, the first check valve 131 closes, and the second check valve 132 opens, allowing water to flow through the second check valve 132 and discharge into the outlet pipe 102. This ensures that water can only enter the water pump 210 in a predetermined direction, avoiding energy waste due to backflow, improving the capability conversion of the propulsion device, and enabling the ship to obtain efficient propulsion.

[0051] In some embodiments of this utility model, the water pump 210 adopts a single-port structure, with the inlet and outlet combined, meaning the inlet is also the outlet. A two-way valve is installed inside the pipe 100. The two-way valve allows water to flow in both directions and can automatically adjust the water flow direction according to the pressure difference between the two ends of the pipe 100. When the pressure at one end is higher than that at the other end, the valve opens, and water flows from the high-pressure end to the low-pressure end, and vice versa. The single-port water pump 210 is easier to install, simplifies the structure, reduces space occupation, and improves the space utilization rate inside the hull.

[0052] Reference Figure 1 As shown, it can be understood that pipe 100 is equipped with a manual ball valve 133, which is used to manually control the opening and closing of pipe 100. The manual ball valve 133 is located at the connection between pipe 100 and water pump 210. Both inlet pipe 101 and outlet pipe 102 are equipped with manual ball valves 133. When water pump 210 is not needed, the manual ball valve 133 can be manually closed. At this time, water in pipe 100 cannot flow into water pump 210 from the inlet or outlet to prevent water from flowing into the hull. When water pump 210 needs to be used, the manual ball valve 133 can be opened. At this time, water in pipe 100 can flow into water pump 210 through the inlet, and water in water pump 210 can also flow back to pipe 100 through the outlet. The manual ball valve 133 prevents water from entering the hull when the water pump 210 is not in use, and also keeps the inside of the water pump 210 dry when not in use, extending the service life of the water pump 210, improving the reliability and durability of the pipeline 100 and the water pump 210, and reducing the maintenance cost and repair frequency of the equipment.

[0053] Reference Figure 1 and Figure 7As shown, it can be understood that the water inlet tank 110 is located at the bottom of the hull and at the front of the hull. The water inlet tank 110 is provided with a water inlet 111, which is inclined downwards towards the side away from the center of the hull. The water inlet 111 is provided with a filter screen 112. The filter screen 112 can prevent impurities in the water from flowing into the water pump 210. The inclined setting can wash away the impurities attached to the filter screen 112 with the impact of the water flow, thus avoiding the clogging of the filter screen 112. The water outlet tank 120 is located on the rear side of the hull. The water outlet tank 120 is equipped with a nozzle 121. The nozzle 121 can control the direction of the sprayed water flow. By controlling the opening orientation of the nozzle 121, the direction of the ship's movement can be adjusted. There are three nozzles 121. The three nozzles 121 are used to spray the water discharged by the water pump 210 at high speed. When the nozzle 121 sprays high-speed water flow backward, the ship will be subjected to a forward reaction force, thereby propelling the ship forward. The structure of the water inlet tank 110 and the water outlet tank 120 is simple and provides stability for the ship's propulsion.

[0054] In some other embodiments of this invention, nozzles 121 can be provided on the side of the hull to propel the hull laterally. It should be noted that, depending on the actual application scenario and requirements, the number of nozzles 121 can be flexibly adjusted to one or more to flexibly adapt to the propulsion needs of various hulls and improve the propulsion effect.

[0055] Reference Figure 1 As shown, the hull can be equipped with four drive components 200, which are spaced apart on the hull. This allows for coordinated propulsion by multiple personnel, improving the hull's propulsion power and efficiency. It should be noted that multiple drive components 200 can be installed depending on the size, structure, and usage requirements of different hulls. The number of drive components 200 can be flexibly adjusted to one or more to adapt to the movement needs of various hulls and improve the hull's propulsion effect.

[0056] In some embodiments of this invention, both the pipe 100 and the transmission plate 220 are made of plastic. Plastic typically has a much lower density than metal materials; therefore, the plastic pipe 100 and transmission plate 220 can significantly reduce the overall weight of the vessel. A lighter vessel requires less driving force during operation, reducing energy consumption and improving the power conversion efficiency of the propulsion device. The plastic pipe 100 and transmission plate 220 also prevent water corrosion, extending the service life of the propulsion device.

[0057] A ship according to an embodiment of the present invention includes a propulsion device according to an embodiment of the present invention.

[0058] The ship according to the embodiments of this utility model, by adopting the propulsion device of this utility model, has a simple structure, reduces design and manufacturing costs, and makes the internal layout of the ship more compact. It also achieves efficient power conversion, avoids energy loss in multiple stages of traditional propulsion systems, improves energy utilization, and enhances propulsion while saving energy.

[0059] Other components and operations of the vessel according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0060] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. Propulsion device, characterized in that, include: A pipe, connected to the hull, with its two ends used for water inlet and outlet respectively; The drive component includes a water pump and a transmission plate. The water pump is connected to the pipe, and the transmission plate is used to provide power to the water pump, causing water to flow from the pipe into the water pump and be ejected from one side of the hull.

2. The propulsion device of claim 1, wherein: The water pump includes a housing, and a piston is movably connected to the housing. A water cavity is formed between the piston and the housing. The transmission plate can drive the piston to move, thereby changing the volume of the water cavity to realize the pumping and draining of water.

3. The propulsion device of claim 2, wherein: The water pump is provided in two parts, and the pipeline includes an inlet pipe and an outlet pipe. The inlets of the two water pumps are connected to the inlet pipe, and the outlets of the two water pumps are connected to the outlet pipe.

4. The propulsion device of claim 3, wherein: The driving component also includes a traction assembly. There are two transmission plates, each corresponding to a water pump. The traction assembly connects the two transmission plates and drives them to move in opposite directions, so that one water pump draws water while the other pumps drain water.

5. The propulsion device of claim 4, wherein: The traction assembly includes a traction rope and two guide rods. Each of the two guide rods is equipped with a roller. Both transmission plates are located below the rollers. The transmission plates are slidably sleeved on the guide rods. The middle part of the traction rope is wound around the rollers. The two ends of the traction rope are respectively fixedly connected to the two transmission plates to drive the two transmission plates to move in opposite directions along the center line of the guide rods.

6. The propulsion device of claim 1, wherein: The pipeline is equipped with an inlet tank and an outlet tank. The inlet tank is located at the bottom of the hull and has an inlet. The inlet is tilted downwards towards the side away from the center of the hull and is equipped with a filter screen. The outlet tank is equipped with a spray pipe. The direction of travel of the hull is adjusted by controlling the opening of the spray pipe.

7. The propulsion device of claim 6, wherein: The pipeline is equipped with a first check valve and a second check valve. The first check valve is located on the communication path between the water inlet tank and the water pump to drive the water flow into the water pump in one direction. The second check valve is located on the communication path between the water outlet tank and the water pump to drive the water flow out of the water pump in one direction.

8. The propulsion device of claim 7, wherein: The pipeline is equipped with a manual ball valve, which is used to manually control the opening and closing of the pipeline. The manual ball valve is located at the connection between the pipeline and the water pump.

9. The propulsion device of claim 1, wherein: Both the pipe and the transmission plate are made of plastic.

10. A vessel characterised by: Includes the propulsion device as described in any one of claims 1 to 9.

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