Fish environmental protection type water jet propeller based on bionics

Abstract

The present application relates to the technical field of water jet propeller, and discloses a fish environmental protection type water jet propeller based on bionics, which comprises a water inlet pipeline, a water jet assembly is arranged on the water inlet pipeline, and the water jet assembly comprises a main shaft. In order to meet the dual requirements of ship propulsion and water ecological protection, the fish environmental protection type water jet propeller based on bionics is provided with the water jet assembly, the assembly drives the mounting shaft to rotate together with the main shaft, the spherical block and the conical block cooperatively drive the impeller and the propeller to run at high speed, and stable propelling water flow is formed; the straight groove, the connecting groove, the hollow drainage groove and the conical drainage groove of the drainage module constitute a closed loop flow channel, the high-energy water flow downstream of the nozzle is guided back to the inlet edge of the impeller and the propeller through the straight metal pipe and the drainage curved metal pipe, uniform backflow jet flow is formed on the surface of the blade, the bionic vortex screen is generated by the interference of the main flow, the rigid edge of the blade is covered, and small fish are guided to actively avoid.

Description

Technical Field

[0001] This invention relates to the field of water jet propulsion technology, specifically to a biomimetic fish-based environmentally friendly water jet propulsion device. Background Technology

[0002] Waterjet propulsion is a safe propulsion device for ships operating in rivers, lakes, and seas. Rivers, lakes, and seas are the habitats of wild fish. Ships propelled by waterjet propulsion have high speeds and large water jet flow rates.

[0003] A baffle at the intake of a waterjet propulsion system prevents larger fish from being sucked into the propulsion channel. However, smaller fish are still susceptible to being drawn in. As fish pass through the high-speed rotating impeller, they suffer fatal injuries from mechanical forces, velocity shear forces, and pressure fluctuations. The severity of these injuries can be mitigated by optimizing the design or reducing the impeller's water delivery capacity, thus reducing shear forces and pressure fluctuations.

[0004] However, the above-mentioned equipment has certain shortcomings in use. Damage to fish at the inlet edge of the high-speed rotating impeller blades and the inlet edge of the downstream guide vanes of the impeller cannot be effectively avoided. In view of this, we propose a biomimetic fish-friendly water jet propulsion device. Summary of the Invention

[0005] The purpose of this invention is to provide a biomimetic fish-based environmentally friendly water jet propulsion device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A biomimetic fish-based environmentally friendly water jet propulsion device includes a water inlet pipe, a support cylinder fixedly installed on the water inlet pipe, a nozzle fixedly installed on the water inlet pipe, and a water jet assembly provided on the water inlet pipe. The water jet assembly includes a main shaft, which is mounted on the support cylinder. An installation shaft is fixedly mounted on the main shaft, an installation block is fixedly mounted on the installation shaft, an impeller and a propeller are fixedly mounted on the installation block, a flow guide module is provided on the installation block, an installation cylinder is fixedly mounted on the main shaft, and an auger blade is fixedly mounted on the installation cylinder.

[0007] In a further embodiment, the mounting block includes a spherical block, which is fixedly mounted on a mounting shaft. A conical block is fixedly mounted on the spherical block. The impeller is fixedly mounted on the spherical block, and the propeller is fixedly mounted on the conical block. The mounting block, impeller, and propeller are disposed inside the nozzle.

[0008] In a further embodiment, the flow-guiding module includes a straight groove formed on a mounting shaft, a connecting groove formed on the mounting shaft, a hollow flow-guiding groove formed inside the spherical block, a conical flow-guiding groove formed inside the conical block, a first turbulence groove formed on the impeller, a second turbulence groove formed on the propeller, a straight metal tube fixedly installed at the top of the conical block, and a flow-guiding curved metal tube fixedly installed at the other end of the straight metal tube.

[0009] In a further embodiment, the straight groove is connected to the connecting groove, the connecting groove is located inside the hollow drainage groove, the hollow drainage groove and the conical drainage groove are connected through the straight groove and the connecting groove, and the straight metal pipe is connected to the internal space of the conical drainage groove.

[0010] In a further embodiment, an auxiliary component is provided on the main shaft. The auxiliary component includes a spherical shell, which is fixedly installed on the main shaft. A water inlet is provided on the spherical shell. A circular plate is fixedly installed inside the spherical shell. A motor is fixedly installed on the circular plate. A short rod is fixedly installed at the output end of the motor. A propeller is fixedly installed on the short rod. A circular groove is provided on the main shaft. A convection pipe is fixedly installed on the main shaft.

[0011] In a further embodiment, the circular plate, motor, short rod, and propeller are disposed inside the spherical shell, and the circular plate separates the motor from the water inlet.

[0012] In a further embodiment, multiple sets of inlet and convection pipe are provided, the circular groove is connected to the internal space of the spherical shell, and the convection pipe is connected to the internal circular groove space of the main shaft.

[0013] In a further embodiment, a fish-outlet assembly is provided on the water inlet pipe. The fish-outlet assembly includes a square tube, which is fixedly installed on the water inlet pipe. A baffle plate is fixedly installed inside the water inlet pipe. A triangular plate is fixedly installed inside the square tube. A fish-attracting device is fixedly installed inside the square tube. A square plate is fixedly installed inside the square tube. An arc-shaped groove is formed on the square plate. A connecting block is fixedly installed on the square plate. Conical grooves are formed on the square plate and the connecting block.

[0014] In a further embodiment, the square tube is positioned at the bend of the water inlet pipe, and the fish-attracting device is positioned behind the triangular plate.

[0015] In a further embodiment, the baffle is positioned above the square tube, and multiple sets of connecting blocks and conical grooves are provided, with the small hole end of the conical groove located outside the connecting block.

[0016] Compared with the prior art, the present invention provides a biomimetic fish-based environmentally friendly water jet propulsion device, which has the following beneficial effects: 1. This biomimetic fish-based environmentally friendly water jet propulsion device, in order to meet the dual needs of ship propulsion and aquatic ecological protection, is equipped with a water jet component. This component, together with the main shaft, drives the mounting shaft to rotate. The spherical block and the conical block work together to drive the impeller and propeller to rotate at high speed, forming a stable propulsive water flow. The straight channel, connecting channel, hollow diversion channel and conical diversion channel of the diversion module form a closed loop flow channel, which guides the high-energy water flow downstream of the nozzle through the straight metal pipe and the diversion curved metal pipe back to the inlet edge of the impeller and propeller, forming a uniform backflow jet on the blade surface. It interferes with the mainstream to generate a biomimetic vortex curtain, covering the rigid edge of the blade and guiding small fish to actively avoid it.

[0017] 2. This biomimetic fish-based environmentally friendly water jet propulsion device incorporates auxiliary components to ensure reliable long-term operation. These components, in conjunction with a spherical shell, introduce external water flow through multiple inlets. The motor drives the propeller to rotate, generating directional convection. The water flows through a circular groove into the main shaft and is then evenly distributed into the main flow area of ​​the propulsion device via a convection pipe. This process stabilizes the flow, increases pressure, and reduces the risk of local eddies and cavitation. A circular plate isolates the motor from the water flow, ensuring the motor's safe and stable operation.

[0018] 3. This biomimetic fish-based environmentally friendly water jet propulsion device, in order to form a complete fish protection system, is equipped with a fish-exit component. This component, together with a square tube, is arranged at the bend of the inlet pipe. The baffle guides the fish-containing water flow into the square tube, and the triangular plate stabilizes and slows down the flow, reducing the water velocity and shear force. The fish-attracting device emits biomimetic signals to attract small fish to move towards the outlet channel. The square plate and the arc-shaped groove, the connecting block and the conical groove form a gradually changing, slow-flowing fish outlet channel. The small holes of the conical groove face outward to avoid the small fish being sucked in or scratched. Multiple sets of conical grooves are evenly distributed to achieve a smooth and impact-free outlet, allowing the small fish to safely return to the natural water body. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 This is a cross-sectional view of part of the structure of the present invention; Figure 4 This is a cross-sectional schematic diagram of the water inlet pipe structure of the present invention; Figure 5 This is a schematic cross-sectional view of part of the structure of the present invention; Figure 6 This is a partial structural diagram of the present invention; Figure 7 This is a schematic cross-sectional view of the main shaft structure of the present invention; Figure 8 This is a schematic cross-sectional view of the water spray component structure of the present invention; Figure 9 This is a schematic diagram of the auxiliary component structure of the present invention; Figure 10 This is a schematic diagram of a portion of the water spray assembly of the present invention; Figure 11 This is a cross-sectional schematic diagram of a portion of the water spray assembly of the present invention; Figure 12 This is a cross-sectional schematic diagram of the fish-eating component of the present invention.

[0020] Explanation of icon numbers: 1. Water inlet pipe; 2. Support cylinder; 3. Sprayer head; 4. Water spray assembly; 41. Main shaft; 42. Mounting shaft; 43. Mounting block; 431. Spherical block; 432. Conical block; 44. Impeller; 45. Propeller; 46. Flow diversion module; 461. Straight groove; 462. Connecting groove; 463. Hollow flow diversion groove; 464. Conical flow diversion groove; 465. No. 1 turbulence groove; 466. No. 2 turbulence groove; 467. Straight metal pipe; 468. Flow diversion bent metal pipe; 47. Mounting cylinder; 48. Screwdriver blade; 5. Auxiliary components; 51. Spherical shell; 52. Inlet; 53. Circular plate; 54. Motor; 55. Short rod; 56. Propeller; 57. Circular groove; 58. Convection pipe; 6. Fish-catching assembly; 61. Square tube; 62. Baffle plate; 63. Triangular plate; 64. Fish-attracting device; 65. Square plate; 66. Arc-shaped groove; 67. Connecting block; 68. Conical groove. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0023] Please see Figures 1-12 The present invention provides a technical solution: A biomimetic fish-based environmentally friendly water jet propulsion device includes a water inlet pipe 1, a support cylinder 2 fixedly installed on the water inlet pipe 1, and a nozzle 3 fixedly installed on the water inlet pipe 1.

[0024] In one embodiment of the present invention, a water spray assembly 4 is provided on the water inlet pipe 1. The water spray assembly 4 includes a main shaft 41, which is mounted on a support cylinder 2. An installation shaft 42 is fixedly mounted on the main shaft 41, and an installation block 43 is fixedly mounted on the installation shaft 42. An impeller 44 and a propeller 45 are fixedly mounted on the installation block 43. A flow guide module 46 is provided on the installation block 43. An installation cylinder 47 is fixedly mounted on the main shaft 41, and an auger blade 48 is fixedly mounted on the installation cylinder 47. The installation block 43 includes a spherical block 431, which is fixedly mounted on the installation shaft 42. A conical block 432 is fixedly mounted on the spherical block 431. The impeller 44 is fixedly mounted on the spherical block 431, and the propeller 45 is fixedly mounted on the conical block 432. The installation block 43, the impeller 44, and the propeller 45 are disposed inside the nozzle 3. The flow diversion module 46 includes a straight groove 461, which is formed on the mounting shaft 42. The mounting shaft 42 has a connecting groove 462. A hollow flow diversion groove 463 is formed inside the spherical block 431. A conical flow diversion groove 464 is formed inside the conical block 432. A first turbulence groove 465 is formed on the impeller 44. A second turbulence groove 466 is formed on the propeller 45. One end of a straight metal tube 467 is fixedly installed at the top of the conical block 432. A flow diversion bent metal tube 468 is fixedly installed at the other end of the straight metal tube 467. The straight groove 461 is connected to the connecting groove 462. The connecting groove 462 is set inside the hollow flow diversion groove 463. The hollow flow diversion groove 463 and the conical flow diversion groove 464 are connected through the straight groove 461 and the connecting groove 462. The straight metal tube 467 is connected to the internal space of the conical flow diversion groove 464.

[0025] In this embodiment, the main shaft 41 rotates at high speed under external power, synchronously driving the mounting shaft 42, mounting block 43, impeller 44, propeller 45, and auger blade 48 to rotate together. Water is drawn in from the front end of the inlet pipe 1, guided by the spherical block 431 and conical block 432, and pressurized at high speed by the impeller 44 and propeller 45 to form a high-speed propulsion water flow, which is finally ejected from the nozzle 3, providing stable and continuous thrust to the ship. At the same time, the guide curved metal pipe 468 draws high-energy water flow from the high-pressure water flow zone downstream of the nozzle 3, introduces it into the straight metal pipe 467, and delivers it to the conical guide groove inside the conical block 432. In section 464, the high-pressure water flow continues to pass through the closed-loop flow channel composed of the hollow diversion channel 463, the connecting channel 462, and the straight channel 461. Finally, it is evenly sprayed out from the first turbulence channel 465 on the impeller 44 and the second turbulence channel 466 on the propeller 45, forming a continuous and stable backflow jet at the leading edge of the blade. This backflow jet interferes with, collides with, and mixes with the upstream flow, forming a biomimetic vortex curtain covering all rigid edges of the impeller 44 and the propeller 45. The vortex curtain will form a significant water flow disturbance zone, causing small fish to instinctively and actively avoid contact with the blades, thereby completely avoiding mechanical damage such as impact, cutting, and squeezing caused by the high-speed rotating blades to the fish.

[0026] In one embodiment of the present invention, an auxiliary component 5 is provided on the main shaft 41. The auxiliary component 5 includes a spherical shell 51, which is fixedly installed on the main shaft 41. A water inlet 52 is provided on the spherical shell 51. A circular plate 53 is fixedly installed inside the spherical shell 51. A motor 54 is fixedly installed on the circular plate 53. A short rod 55 is fixedly installed at the output end of the motor 54. A propeller 56 is fixedly installed on the short rod 55. A circular groove 57 is provided on the main shaft 41. A convection pipe 58 is fixedly installed on the main shaft 41. The circular plate 53, the motor 54, the short rod 55, and the propeller 56 are disposed inside the spherical shell 51. The circular plate 53 separates the motor 54 from the water inlet 52. Multiple sets of water inlets 52 and convection pipes 58 are provided. The circular groove 57 is connected to the internal space of the spherical shell 51, and the convection pipe 58 is connected to the internal space of the circular groove 57 of the main shaft 41.

[0027] In this embodiment, external water flows into the spherical shell 51 through multiple evenly distributed inlets 52. The motor 54 drives the short rod 55 and propeller 56 to rotate, generating a stable and orderly convective circulation water flow. After the water flows into the circular groove 57 inside the main shaft 41, it is evenly and smoothly injected into the main water flow area through multiple symmetrically arranged convection pipes 58. The auxiliary water flow ejected from the convection pipes 58 can effectively weaken the local eddies, low-pressure areas and pressure fluctuations in the main water flow, reduce the damage to small fish caused by negative pressure adsorption and strong shearing force. The circular plate 53 completely isolates the motor 54 from the external water flow, which not only avoids the impact of water flow on the operation of the motor 54, but also prevents impurities from entering the motor 54 area and causing malfunctions, making the flow field inside the entire propeller more stable, the pressure more uniform, and the operation quieter.

[0028] In one embodiment of the present invention, a fish-eating assembly 6 is provided on the water inlet pipe 1. The fish-eating assembly 6 includes a square tube 61, which is fixedly installed on the water inlet pipe 1. A baffle plate 62 is fixedly installed inside the water inlet pipe 1. A triangular plate 63 is fixedly installed inside the square tube 61. A fish-attracting device 64 is fixedly installed inside the square tube 61. A square plate 65 is fixedly installed inside the square tube 61. An arc-shaped groove 66 is provided on the square plate 65. A connecting block 67 is fixedly installed on the square plate 65. A conical groove 68 is provided on the square plate 65 and the connecting block 67. The square tube 61 is located at the bend of the water inlet pipe 1. The fish-attracting device 64 is located behind the triangular plate 63. The baffle plate 62 is located above the square tube 61. Multiple sets of connecting blocks 67 and conical grooves 68 are provided. The small hole end of the conical groove 68 is located outside the connecting block 67.

[0029] In this embodiment, fish entering the inlet pipe 1 with the water flow are smoothly guided into the square tube 61 at the bend position by the baffle 62, avoiding direct impact on the high-speed rotating components. The triangular plate 63 stabilizes, diffuses, and slows down the water flow entering the square tube 61, reducing the water flow speed and shear force, providing a comfortable and low-impact moving environment for the fish. The fish-attracting device 64 emits biomimetic light, sound waves, or water flow signals to guide the fish to actively swim towards the guide channel. The square plate 65, the arc-shaped groove 66, the connecting block 67, and multiple sets of conical grooves 68 together form a gradually changing slow-flow outlet channel. The conical grooves 68 adopt an inner-large and outer-small structure, which can not only allow the fish to pass smoothly, but also prevent water backflow and fish retreat, avoiding scratching, squeezing, and collision damage. Finally, the fish leave the propeller smoothly and safely in an environment without mechanical impact, high-speed shear, or strong negative pressure, and return to the natural water body.

[0030] The signal interaction of each component adopts the PLC control protocol commonly used in industrial equipment, which is common knowledge to those skilled in the art and can be implemented without further detailed description. The control logic and signal interaction method are existing technologies and will not be described in detail. The standard parts used in this application can all be purchased from the market. The specific connection methods of each part are all connected by conventional methods such as riveting and welding that are mature in the existing technology. The standard parts are all of conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology.

[0031] It should be noted that the above electrical components are all existing technology products. Those skilled in the art should select, install, and complete the circuit debugging work according to the needs of use to ensure that each electrical appliance can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be known by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here. The supporting structures of the hydraulic drive structure appearing in this application document, such as hydraulic tanks and hydraulic pumps, are existing equipment and will not be described in detail here.

[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A biomimetic fish-based environmentally friendly water jet propulsion device, comprising a water inlet pipe (1), a support cylinder (2) fixedly installed on the water inlet pipe (1), and a nozzle (3) fixedly installed on the water inlet pipe (1), characterized in that: A water spray assembly (4) is provided on the water inlet pipe (1). The water spray assembly (4) includes a main shaft (41), which is mounted on the support cylinder (2). An installation shaft (42) is fixedly installed on the main shaft (41), an installation block (43) is fixedly installed on the installation shaft (42), an impeller (44) and a propeller (45) are fixedly installed on the installation block (43), a flow guide module (46) is provided on the installation block (43), an installation cylinder (47) is fixedly installed on the main shaft (41), and an auger blade (48) is fixedly installed on the installation cylinder (47).

2. The biomimetic fish-based environmentally friendly water jet propulsion device according to claim 1, characterized in that: The mounting block (43) includes a spherical block (431), which is fixedly mounted on the mounting shaft (42). A conical block (432) is fixedly mounted on the spherical block (431). The impeller (44) is fixedly mounted on the spherical block (431). The propeller (45) is fixedly mounted on the conical block (432). The mounting block (43), impeller (44), and propeller (45) are located inside the nozzle (3).

3. The biomimetic fish-based environmentally friendly water jet propulsion device according to claim 2, characterized in that: The diversion module (46) includes a straight groove (461), which is opened on the mounting shaft (42). The mounting shaft (42) is provided with a connecting groove (462). The spherical block (431) is provided with a hollow diversion groove (463). The conical block (432) is provided with a conical diversion groove (464). The impeller (44) is provided with a first turbulence groove (465). The propeller (45) is provided with a second turbulence groove (466). A straight metal tube (467) is fixedly installed at the top of the conical block (432). A diversion curved metal tube (468) is fixedly installed at the other end of the straight metal tube (467).

4. The biomimetic fish-based environmentally friendly water jet propulsion device according to claim 3, characterized in that: The straight groove (461) is connected to the connecting groove (462), the connecting groove (462) is located inside the hollow drainage groove (463), the hollow drainage groove (463) and the conical drainage groove (464) are connected through the straight groove (461) and the connecting groove (462), and the straight metal pipe (467) is connected to the internal space of the conical drainage groove (464).

5. The biomimetic fish-based environmentally friendly water jet propulsion device according to claim 1, characterized in that: An auxiliary component (5) is provided on the main shaft (41). The auxiliary component (5) includes a spherical shell (51), which is fixedly installed on the main shaft (41). A water inlet (52) is provided on the spherical shell (51). A circular plate (53) is fixedly installed inside the spherical shell (51). A motor (54) is fixedly installed on the circular plate (53). A short rod (55) is fixedly installed at the output end of the motor (54). A propeller (56) is fixedly installed on the short rod (55). A circular groove (57) is provided on the main shaft (41). A convection pipe (58) is fixedly installed on the main shaft (41).

6. The biomimetic fish-based environmentally friendly water jet propulsion device according to claim 5, characterized in that: The circular plate (53), motor (54), short rod (55) and propeller (56) are disposed inside the spherical shell (51), and the circular plate (53) separates the motor (54) from the water inlet (52).

7. The biomimetic fish-based environmentally friendly water jet propulsion device according to claim 5, characterized in that: The inlet (52) and convection pipe (58) are provided in multiple sets. The circular groove (57) is connected to the internal space of the spherical shell (51). The convection pipe (58) is connected to the internal space of the circular groove (57) of the main shaft (41).

8. The biomimetic fish-based environmentally friendly water jet propulsion device according to claim 1, characterized in that: The water inlet pipe (1) is provided with a fish outlet assembly (6), which includes a square tube (61). The square tube (61) is fixedly installed on the water inlet pipe (1). A baffle plate (62) is fixedly installed inside the water inlet pipe (1). A triangular plate (63) is fixedly installed inside the square tube (61). A fish attracting device (64) is fixedly installed inside the square tube (61). A square plate (65) is fixedly installed inside the square tube (61). An arc groove (66) is opened on the square plate (65). A connecting block (67) is fixedly installed on the square plate (65). A conical groove (68) is opened on the square plate (65) and the connecting block (67).

9. The biomimetic fish-based environmentally friendly water jet propulsion device according to claim 8, characterized in that: The square tube (61) is located at the bend of the water inlet pipe (1), and the fish attracting device (64) is located behind the triangular plate (63).

10. The biomimetic fish-based environmentally friendly waterjet propulsion device according to claim 8, characterized in that: The baffle (62) is disposed above the square tube (61), and multiple sets of the connecting block (67) and the conical groove (68) are provided. The small hole end of the conical groove (68) is disposed outside the connecting block (67).

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