A combined pump-jet propeller

Abstract

The present invention discloses a combined pump-jet propeller, comprising a main body, a water inlet cavity formed inside the main body, and a water inlet hole formed on the surface of the main body and connected to the water inlet cavity. The combined pump-jet propeller is provided with an auxiliary propeller to assist the operation of the pump-jet propeller, thereby strengthening the propulsion force on the ship and accelerating the speed of the ship. Six to ten water inlets are provided to prevent the water inlets from being blocked at the same time and affecting the operation of the propeller. The water inlets of the water inlets are all provided with arc-shaped grooves. When the propeller moves, water flows through the arc-shaped grooves to easily form a circulation, which facilitates the cleaning of the water inlets of the water inlets in the arc-shaped grooves. A filter is installed inside the water inlet hole to prevent impurities from entering the interior of the device and affecting the operation of the propeller. By starting a cleaning engine, the water flow rate on the outer surface of the main body can be accelerated, which facilitates further cleaning of the water inlet and the filter of the water inlet hole and ensures that the water inlet is unobstructed.

Description

Technical Field

[0001] The present invention relates to a ship propeller, in particular to a combined pump-jet propeller. Background Art

[0002] Pump-jet propulsion for ships is a propulsion method that generates thrust by ejecting water from a nozzle at high speed. It is usually composed of components such as a pump, a nozzle, a control valve, and a transmission mechanism. First, water enters the pump from the surrounding environment, is compressed and enters the nozzle, and is finally ejected at high speed, thereby generating a reaction force to drive the ship's movement. Unlike traditional propeller propulsion, water jet propulsion can achieve more flexible movement by controlling the water flow rate and injection angle. Water jet propulsion has the advantages of energy saving, sensitive response, and low noise. It only requires a small amount of water inlet pipes to complete the hull propulsion, and can output greater thrust, making it suitable for various types of ships.

[0003] Existing pump-jet propulsion systems are usually equipped with propellers to enhance the propulsion force on the ship, thereby increasing the speed of the ship. However, this combined propulsion system has some shortcomings, such as:

[0004] 1. The propeller requires a large space when working, so the combined propeller is often large in size. In shallow water areas, the propeller is likely to touch the reef, affecting the navigation of the ship, and in serious cases, it may cause damage to the propeller blades;

[0005] 2. The water inlet of the pump-jet propulsion system is prone to the entry of debris, which affects the normal operation of the internal engine and easily causes damage to the rotating blades of the engine. Summary of the Invention

[0006] Purpose of the invention: In view of the above problems, the purpose of the present invention is to provide a combined pump-jet propulsion device that can further prevent damage while ensuring power.

[0007] Technical solution: A combined pump-jet propulsor includes a main body, a water jet tail pipe, a rectifier plate, a pump-jet engine, and an auxiliary propeller. A water inlet chamber is provided inside the main body, and a plurality of water inlet holes connected to the water inlet chamber are provided at circumferential intervals on the outside. An arc-shaped groove is provided on the outer wall of the main body and on the outer periphery of each water inlet hole. The pump-jet engine is installed inside the water inlet chamber, the water jet tail pipe is installed at the tail of the main body and is connected to the water inlet chamber, the rectifier plate is installed inside the water jet tail pipe and close to its end, and the auxiliary propellers are installed in pairs on the outer circumference of the main body in axial symmetry.

[0008] Furthermore, the propeller also includes a cleaning engine embedded in the main body, the cleaning engine includes an interconnected engine stator and an engine rotor, and a plurality of blades are fixedly mounted on the outer surface of the engine rotor, and the plurality of blades are arranged in a circle at intervals on the outer periphery of the main body.

[0009] Furthermore, a cone-shaped pressurized tube cavity is provided inside the water spray tail pipe, the large end of the pressurized tube cavity is connected to the water inlet cavity, and the small end is provided with an interconnected water outlet, and a rectifier plate is installed in the water outlet.

[0010] Preferably, the rectifier plate 1 has a M-shaped structure.

[0011] Furthermore, the pump-jet engine includes a pump-jet engine stator and an annular rotor. The pump-jet engine stator is installed on the inner wall of the water inlet chamber, and the annular rotor is arranged on the pump-jet engine stator. A plurality of rotor blades are installed at intervals on the inner ring surface of the annular rotor.

[0012] Optimally, the rotor blades are made of high-strength carbon fiber.

[0013] Furthermore, the auxiliary propeller includes a connecting block, a transmission member, a telescopic rod, and a propeller propeller. The connecting block is connected to the main body, the propeller propeller is connected to one side of the connecting block through two parallel and spaced telescopic rods, the transmission member is installed inside the connecting block, and the transmission part of the transmission member is hinged to the outer side of the propeller propeller.

[0014] Optimally, the transmission parts include a waterproof motor, a threaded rod, a threaded block, and a guide rod. An installation cavity is opened inside the connecting block, and a slide groove connected to the installation cavity is also provided on one side of the connecting block. The waterproof motor is installed inside the installation cavity, one end of the threaded rod is rotatably connected to the inner wall of the installation cavity, and the other end is connected to the output end of the waterproof motor. The threaded block is installed on the outer circumferential surface of the threaded rod, one end of the guide rod is hinged to the threaded block, and the other end passes through the slide groove and is hinged to the surface of the propeller propeller.

[0015] Furthermore, the propeller also includes a rectifier plate 2, which is fixedly mounted on the inner wall of the water inlet chamber and is arranged in front of the water inlet of the pump-jet engine.

[0016] Optimally, the number of water inlet holes is 6 to 10, and a filter is installed on each water inlet hole.

[0017] Beneficial effects: Compared with the prior art, the advantages of the present invention are:

[0018] 1. The combined pump-jet propeller is equipped with an auxiliary propeller to assist the work of the pump-jet propeller, thereby strengthening the propulsion force on the ship and thus accelerating the speed of the ship.

[0019] 2. The combined pump-jet propeller has six to ten water inlet holes, which can prevent the water inlet holes from being blocked at the same time and affecting the operation of the propeller. The water inlet of the water inlet hole is provided with an arc-shaped groove. When the propeller moves, the water flow is easy to form a circulation when passing through the arc-shaped groove, which is convenient for cleaning the water inlet of the water inlet hole in the arc-shaped groove. A filter is installed inside the water inlet hole to prevent impurities from entering the inside of the device and affecting the operation of the propeller. By starting the cleaning engine, the water flow speed on the outer surface of the main body can be accelerated, which facilitates further cleaning of the water inlet and the filter of the water inlet hole to ensure the smooth flow of the water inlet.

[0020] 3. When the combined pump-jet propeller is working in the open sea, the distance between the propeller and the main body can be easily adjusted by starting the waterproof motor to ensure the normal operation of the propeller. When the propeller moves to the front sea or the shore, the propeller is turned off and the waterproof motor is started in reverse to drive the propeller closer to the main body, reducing the space required for the entire device and preventing the propeller from touching reefs and affecting the navigation of the ship.

[0021] 4. The rotor blades of this combined pump-jet propeller are made of high-strength carbon fiber material. The high-strength carbon fiber plate has many excellent properties such as light weight, high strength, high rigidity, high wear resistance, and high temperature resistance. It can not only improve the service life of the rotor blades, but also reduce the weight of the rotor blades, increase the speed of the rotor blades, and increase the power of the propeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 A schematic diagram of the three-dimensional structure of the cleaning engine installed in the present invention;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0025] Figure 4 for Figure 3 A magnified view of the structure of middle A;

[0026] Figure 5 Schematic diagram of the three-dimensional structure of the auxiliary propeller;

[0027] Figure 6 This is a schematic diagram of the auxiliary propeller cross-section structure;

[0028] Figure 7 This is a schematic diagram of the ring rotor structure of a pump-jet engine;

[0029] Figure 8 Schematic diagram of the structure of the water spray tail pipe;

[0030] Figure 9It is a top view of the present invention. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and specific examples. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0032] A combined pump-jet propulsion system, such as Figures 1 to 9 As shown, it includes a main body 1, a water spray tail pipe 3, a straightening plate 1 4, a pump-jet engine, an auxiliary propeller 8, and a straightening plate 2 10.

[0033] A water inlet chamber 2 is provided inside the main body 1, and a plurality of water inlet holes 7 are provided at circumferential intervals on the outside, which are connected to the water inlet chamber 2, to facilitate the propeller to absorb water. An arc-shaped groove 6 is provided on the outer wall of the main body 1 and on the periphery of each water inlet hole 7. When the propeller moves, water easily forms a circulation when passing through the arc-shaped groove 6, which facilitates the cleaning of the water inlet of the water inlet hole 7 in the arc-shaped groove 6. The number of water inlet holes 7 is 6 to 10, which can prevent the water inlet holes from being blocked at the same time and affecting the operation of the propeller. A filter screen 71 is installed on each water inlet hole 7 to prevent impurities from entering the interior of the device and affecting the operation of the propeller.

[0034] The pump-jet engine and the rectifier plate 10 are respectively installed inside the water inlet chamber 2. The pump-jet engine includes a pump-jet engine stator 51 and an annular rotor 52. The pump-jet engine stator 51 is installed on the inner wall of the water inlet chamber 2, and the annular rotor 52 is arranged on the pump-jet engine stator 51. A plurality of rotor blades 53 are installed at intervals on the inner ring surface of the annular rotor 52. After starting the pump-jet engine, the annular rotor 52 is driven to rotate, and the annular rotor drives the rotor blades 53 to rotate, which is convenient for sucking in water and pressurizing and spraying it out, driving the device to move; the rotor blades 53 are made of high-strength carbon fiber material, and the high-strength carbon fiber plate has multiple excellent properties such as light weight, high strength, high rigidity, high wear resistance, and high temperature resistance. It can not only improve the service life of the rotor blades 53, but also reduce the weight of the rotor blades 53, increase the rotation speed of the rotor blades 53, and increase the power of the propeller. A rectifier plate 2 10 is fixedly installed on the inner wall of the water inlet chamber 2. A plurality of rectifier plates 10 are arranged at intervals on the inner circle of the water inlet chamber 2 and are located in front of the water inlet of the pump-jet engine to rectify the inhaled water and facilitate subsequent rotation and pressurization of the water.

[0035] The water spray tail pipe 3 is installed at the tail end of the main body 1 and is connected to the water inlet chamber 2. The rectifying plate 4 is installed inside the water spray tail pipe 3 and close to its end. The interior of the water spray tail pipe 3 is provided with a frustum-shaped pressurized pipe cavity 31. The large end of the pressurized pipe cavity 31 is connected to the water inlet chamber 2, and the small end is provided with an interconnected water outlet pipe port 32. The rectifying plate 4 is installed in the water outlet pipe port 32. The rectifying plate 4 is a M-shaped structure, which is convenient for rectifying and injecting the water and pushing the device to move.

[0036] Auxiliary propellers 8 are mounted in pairs, axially symmetrically and spaced apart, on the outer circumference of the main body 1. For example, a pair of auxiliary propellers 8 are provided, i.e., a symmetrically arranged auxiliary propeller 8 is mounted on opposite sides of the main body 1. These propellers 8 assist the pump-jet propulsion system, enhancing the propulsion force on the vessel and thereby increasing the vessel's speed. Auxiliary propellers 8 include a connecting block 81, a transmission member, a telescopic rod 82, and a propeller 83. The connecting block 81 is connected to the main body 1. The propeller 83 is connected to one side of the connecting block 81 via two parallel, spaced-apart telescopic rods 82. The transmission member is mounted within the connecting block 81, and its transmission portion is hingedly connected to the outer side of the propeller 83. The transmission parts include a waterproof motor 85, a threaded rod 86, a threaded block 87, and a guide rod 88. An installation cavity 84 is opened inside the connecting block 81, and a slide groove 89 connected to the installation cavity 84 is also provided on one side of the connecting block 81. The waterproof motor 85 is installed inside the installation cavity 84. One end of the threaded rod 86 is rotatably connected to the inner wall of the installation cavity 84, and the other end is connected to the output end of the waterproof motor 85. The threaded block 87 is installed on the outer peripheral surface of the threaded rod 86. One end of the guide rod 88 is hinged to the threaded block 87, and the other end passes through the slide groove 89 and is hinged to the surface of the propeller propeller 83.

[0037] When working in the open sea, the waterproof motor 85 is started to drive the threaded rod 86 to rotate. The threaded rod 86 rotates by itself to drive the threaded block 87 to move. The threaded block 87 drives the guide rod 88 to move. The guide rod 88 drives the propeller propeller 83 to move, which facilitates the adjustment of the distance between the propeller propeller 83 and the main body 1 to ensure the normal operation of the propeller propeller 83. When the propeller moves to the front sea or the shore, the propeller propeller 83 is turned off, and then the waterproof motor 85 is started in reverse to drive the propeller propeller 83 close to the main body 1, reducing the space required for the entire device, preventing the propeller from touching the reef, affecting the navigation of the ship, and preventing the blades of the propeller propeller 83 from being damaged.

[0038] In order to further accelerate the water flow rate on the outer surface of the main body 1, as Figure 2 、 3 As shown, the propeller further includes a cleaning engine embedded in the main body 1. The cleaning engine includes an interconnected engine stator 91 and an engine rotor 92. The outer surface of the engine rotor 92 is fixedly mounted with a plurality of blades, which are sequentially spaced and arranged in a circle around the outer circumference of the main body 1. By starting the cleaning engine, the flow rate of water on the outer surface of the main body 1 can be accelerated, facilitating further cleaning of the water inlet of the water inlet hole 7 and the filter 71, thereby ensuring the patency of the water inlet.

[0039] The working principle of this combined pump-jet propeller is as follows: after starting the pump-jet engine, it drives the annular rotor 52 to rotate, and the annular rotor drives the rotor blades 53 to rotate, which is convenient for sucking in water and pressurizing and spraying it out, driving the device to move. The rotor blades 53 are made of high-strength carbon fiber material. The high-strength carbon fiber plate has many excellent properties such as light weight, high strength, high rigidity, high wear resistance, and high temperature resistance. It can not only improve the service life of the rotor blades 53, but also reduce the weight of the rotor blades 53, increase the rotation speed of the rotor blades 53, and increase the power of the propeller. There are two auxiliary propellers 8, which are symmetrically installed on both sides of the main body 1 to assist the work of the pump-jet propeller, enhance the propulsion force on the ship, and thus speed up the ship's travel speed. When working in the open sea, by starting the waterproof motor 85, the threaded rod 86 is driven to rotate. The threaded rod 86 rotates by itself, drives the threaded block 87 to move, the threaded block 87 drives the guide rod 88 to move, and the guide rod 88 drives the propeller propeller 83 to move, which is convenient for adjusting the propeller propeller 8 3 and the main body 1 to ensure the normal operation of the propeller propeller 83. When the propeller moves to the front sea or the shore, the propeller propeller 83 is turned off, and then the waterproof motor 85 is started in reverse to drive the propeller propeller 83 close to the main body 1, reducing the space required for the entire device, preventing the propeller from touching the reef, affecting the navigation of the ship, and preventing the blades of the propeller propeller 83 from being damaged. There are six to ten water inlet holes 7 to prevent the water inlet holes from being blocked at the same time and affecting the operation of the propeller. The water inlet holes 7 are all provided with arc-shaped grooves 6 at the water inlet. When the propeller moves, water flows through the arc-shaped grooves 6 to easily form a circulation, which facilitates the cleaning of the water inlet of the water inlet hole 7 in the arc-shaped groove 6. A filter screen 71 is installed inside the water inlet hole 7 to prevent impurities from entering the interior of the device and affecting the operation of the propeller. By starting the cleaning engine, the water flow rate on the outer surface of the main body 1 can be accelerated, which facilitates further cleaning of the water inlet of the water inlet hole 7 and the filter screen 71 to ensure the smooth flow of the water inlet.

Claims

1. A combined pump-jet propulsion system, characterized in that: The invention comprises a main body (1), a water jet tail pipe (3), a rectifying plate (4), a pump-jet engine, and an auxiliary propeller (8); a water inlet chamber (2) is provided inside the main body (1); a plurality of water inlet holes (7) communicating with the water inlet chamber (2) are provided at intervals on the outside in the circumferential direction; an arc-shaped groove (6) is provided on the outer wall of the main body (1) and on the outer periphery of each water inlet hole (7); the pump-jet engine is installed inside the water inlet chamber (2); the water jet tail pipe (3) is installed at the tail of the main body (1) and communicates with the water inlet chamber (2); the rectifying plate (4) is installed inside the water jet tail pipe (3) and close to the end thereof; and the auxiliary propellers (8) are installed in pairs on the outer peripheral surface of the main body (1) at intervals in an axisymmetric manner; The cleaning engine is also included, which is embedded in the main body (1). The cleaning engine includes an interconnected engine stator (91) and an engine rotor (92). A plurality of blades are fixedly mounted on the outer surface of the engine rotor (92). The plurality of blades are sequentially spaced and arranged in a circle around the outer circumference of the main body (1). The auxiliary propeller (8) includes a connecting block (81), a transmission member, a telescopic rod (82), and a propeller propeller (83). The connecting block (81) is connected to the main body (1). The propeller propeller (83) is connected to one side of the connecting block (81) through two parallel and spaced telescopic rods (82). The transmission member is installed inside the connecting block (81). The transmission part of the transmission member is hinged to the outer side of the propeller propeller (83). The transmission member includes a waterproof motor (85), a threaded rod (86), a threaded block (87), and a guide rod (88). A mounting cavity (84) is provided inside the connecting block (81). A slide groove (89) communicating with the mounting cavity (84) is further provided on one side of the connecting block (81). The waterproof motor (85) is installed inside the mounting cavity (84). One end of the threaded rod (86) is rotatably connected to the inner wall of the mounting cavity (84), and the other end is connected to the output end of the waterproof motor (85). The threaded block (87) is installed on the outer peripheral surface of the threaded rod (86). One end of the guide rod (88) is hinged to the threaded block (87), and the other end passes through the slide groove (89) and is hinged to the surface of the propeller propeller (83). A filter screen (71) is installed on each water inlet (7).

2. A combined pump-jet propulsion system according to claim 1, characterized in that: A cone-shaped pressurized tube cavity (31) is provided inside the water spray tail pipe (3). The large end of the pressurized tube cavity (31) is connected to the water inlet cavity (2), and the small end is provided with an interconnected water outlet pipe (32). The rectifier plate (4) is installed in the water outlet pipe (32).

3. A combined pump-jet propulsion system according to claim 1 or 2, characterized in that: The rectifier plate 1 (4) is a M-shaped structure.

4. A combined pump-jet propulsion system according to claim 1, characterized in that: The pump-jet engine comprises a pump-jet engine stator (51) and an annular rotor (52). The pump-jet engine stator (51) is mounted on the inner wall of a water inlet chamber (2). The annular rotor (52) is arranged on the pump-jet engine stator (51). A plurality of rotor blades (53) are installed at intervals on the inner ring surface of the annular rotor (52).

5. A combined pump-jet propulsion system according to claim 4, characterized in that: The rotor blades (53) are made of high-strength carbon fiber material.

6. The combined pump-jet propulsion system according to claim 1, characterized in that: It also includes a second rectifying plate (10), the inner wall of the water inlet chamber (2) is fixedly mounted with the second rectifying plate (10), and the second rectifying plate (10) is arranged in front of the water inlet of the pump-jet engine.

7. The combined pump-jet propulsion system according to claim 1, characterized in that: The number of water inlet holes (7) is 6 to 10.

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