Marine tail shaft capable of preventing impurities from entering

Abstract

The utility model relates to the technical field of marine tail shafts, and discloses a marine tail shaft capable of preventing sundries from entering, propeller blades are fixedly installed on the side face of a propeller machine, circular blades are fixedly installed on the side face of the propeller machine, a rotating shaft is fixedly installed on the front face of the propeller machine, and the rotating shaft is fixedly installed on the rear face of the propeller machine. And a long blade is fixedly installed on the side face of the rotating shaft, an arc-shaped blade is fixedly installed on the rear side of the propeller machine, a shell is fixedly installed on the rear side of the propeller machine, and a connecting rod is fixedly installed on the inner side of the shell. According to the marine tail shaft capable of preventing the impurities from entering, firstly, after a propeller machine is started, propeller blades start to rotate and generate power to enable a ship body to start to move, when the tail shaft is installed in the ship body, rotation of the propeller blades causes water flow to rotate to be wound into aquatic plants or the impurities in water, and the propeller blades are wound; some wound sundries are close to the surface of the propeller machine, and the sundries wound on the surface of the propeller machine are cut into small blocks through the circular blade.

Description

Technical Field

[0001] This utility model relates to the field of marine stern shaft technology, specifically a marine stern shaft that can prevent debris from entering. Background Technology

[0002] The stern shaft is an important component of the ship's propulsion system, playing a crucial role in transmitting engine power to the propeller and ensuring the ship's navigation stability and safety.

[0003] Many marine stern shafts currently in use can become unusable due to debris getting caught in them during rotation, causing the ship to stop. This can not only pose a personal danger but also result in significant economic losses. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a marine stern shaft that can prevent debris from entering, thereby solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a marine stern shaft that can prevent debris from entering, wherein propeller blades are fixedly installed on the side of the propeller, circular blades are fixedly installed on the side of the propeller, a rotating shaft is fixedly installed on the front of the propeller, long blades are fixedly installed on the side of the rotating shaft, an arc-shaped blade is fixedly installed on the rear side of the propeller, a housing is fixedly installed on the rear side of the propeller, a connecting rod is fixedly installed on the inner side of the housing, sealing flanges are fixedly installed at both ends of the connecting rod, sealing rings are fixedly installed on the inner side of the sealing flanges, a ceramic sealing ring is fixedly installed on the side of the connecting rod, and an oil-soaked rope is provided on the rear side of the ceramic sealing ring.

[0008] Preferably, the circular blades are arranged in groups of two, with five groups in total.

[0009] Preferably, the long blade is provided with three blades.

[0010] Preferably, the sealing ring is made of elastic rubber.

[0011] Preferably, the oil-soaked rope is tightly wound around the side of the connecting rod several times.

[0012] Preferably, the surface of the oil-soaked rope is covered with lubricating oil.

[0013] Compared with the prior art, this utility model provides a marine stern shaft that can prevent debris from entering, and has the following beneficial effects:

[0014] 1. This marine tail shaft prevents debris from entering. First, after the propeller starts, the propeller blades will begin to rotate and generate power to move the hull. When the tail shaft is installed in the hull, the rotation of the propeller blades will cause the water flow to rotate and pick up aquatic plants or debris in the water, causing the propeller blades to get tangled. Some of the tangled debris will stick close to the surface of the propeller. The circular blades can cut the debris tangled on the surface of the propeller into small pieces. The propeller blades will then push the debris out. As the propeller blades rotate and the hull moves forward, a vortex will be generated on the front of the propeller. The shaft can be driven by the vortex to rotate the long blades, cutting the debris caught in the vortex into small pieces, which will then be thrown out by the propeller blades.

[0015] 2. This marine stern shaft can prevent debris from entering. The part of the stern shaft near the propeller will be immersed in water. The sealing flange can initially isolate the water. The sealing ring can maintain the seal through elasticity when the stern shaft vibrates. The ceramic sealing ring has corrosion-resistant properties, which can effectively prevent water from entering if maintenance is not performed in time after long-term use. The sealing ring is tightly attached to the surface of the ceramic sealing ring to form a dynamic seal. The oil-soaked rope can fill the gap between the connecting rod and the outer shell. The immiscibility of water and oil can effectively prevent water from seeping in. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0018] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0019] In the diagram: 1. Propeller; 2. Propeller blade; 3. Circular blade; 4. Shaft; 5. Long blade; 6. Housing; 7. Curved blade; 8. Sealing flange; 9. Sealing ring; 10. Ceramic sealing ring; 11. Connecting rod; 12. Oil-soaked rope; Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1-3As shown, this utility model provides a technical solution: a marine stern shaft that can prevent debris from entering. A propeller blade 2 is fixedly installed on the side of the propeller 1, a circular blade 3 is fixedly installed on the side of the propeller 1, a rotating shaft 4 is fixedly installed on the front of the propeller 1, a long blade 5 is fixedly installed on the side of the rotating shaft 4, an arc-shaped blade 7 is fixedly installed on the rear side of the propeller 1, a housing 6 is fixedly installed on the rear side of the propeller 1, a connecting rod 11 is fixedly installed on the inner side of the housing 6, sealing flanges 8 are fixedly installed at both ends of the connecting rod 11, sealing rubber rings 9 are fixedly installed on the inner side of the sealing flanges 8, a ceramic sealing ring 10 is fixedly installed on the side of the connecting rod 11, and an oil-soaked rope 12 is provided on the rear side of the ceramic sealing ring 10.

[0022] Furthermore, the circular blades are arranged in groups of two, with five groups in total.

[0023] Through the above technical solution, the circular blade 3 can cut some longer fishing lines or seaweed, and the circular shape makes it less likely to get stuck and prevent cutting.

[0024] Furthermore, the long blade 5 is equipped with three.

[0025] Through the above technical solution, the central part of the propeller blade 2 is prone to forming a vortex when rotating, which causes debris to be drawn in. The long blade 5 can cut the debris drawn into the vortex and push the debris out through the rotation of the propeller blade 2.

[0026] Furthermore, the sealing ring 9 is made of elastic rubber.

[0027] Through the above technical solution, the sealing ring 9 is tightly attached to the surface of the ceramic sealing ring 10 to form a dynamic seal.

[0028] Furthermore, the oil-soaked rope 12 is tightly wrapped around the side of the connecting rod 11 several times.

[0029] Through the above technical solution, the oil-soaked rope 12 can fill the gap between the connecting rod 11 and the outer shell 6.

[0030] Furthermore, the surface of the oil-soaked rope 12 is covered with lubricating oil.

[0031] The above technical solution effectively prevents water from seeping in by utilizing the immiscibility of water and oil.

[0032] Working principle: After the propeller 1 is started, the propeller blades 2 will start to rotate and generate power to make the hull move. When the tail shaft is installed in the hull, the rotation of the propeller blades 2 will cause the water flow to rotate and pick up aquatic plants or debris in the water, causing the propeller blades 2 to be entangled. Some of the entangled debris will be close to the surface of the propeller 1. The circular blades 3 can cut the debris entangled on the surface of the propeller 1 into small pieces. The debris is then pushed out by the rotation of the propeller blades 2. When the propeller blades 2 rotate, the hull moves forward, and a vortex is generated on the front of the propeller 1. The shaft 4 can be driven by the vortex to rotate the long blades 5, cutting the debris caught in the vortex into small pieces, which are then thrown out by the propeller blades 2. The part of the tail shaft close to the propeller 1 will be immersed in water. The sealing flange 8 can initially isolate the water. The sealing ring 9 can maintain the seal through elasticity when the tail shaft vibrates. The ceramic sealing ring 10 has corrosion-resistant properties and can effectively prevent water from entering if maintenance is not performed in time after long-term use.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A marine stern shaft that can prevent foreign matter from entering, comprising a propeller machine (1), characterized in that: The side of the propeller machine (1) is fixedly installed with propeller blades (2), the side of the propeller machine (1) is fixedly installed with circular blades (3), the front of the propeller machine (1) is fixedly installed with rotating shafts (4), the side of the rotating shaft (4) is fixedly installed with long blades (5), the rear of the propeller machine (1) is fixedly installed with arc-shaped blades (7), the rear of the propeller machine (1) is fixedly installed with shells (6), the inner side of the shell (6) is fixedly installed with connecting rods (11), both ends of the connecting rod (11) are fixedly installed with sealing flanges (8), the inner side of the sealing flange (8) is fixedly installed with sealing rubber rings (9), the side of the connecting rod (11) is fixedly installed with ceramic sealing rings (10), and the rear of the ceramic sealing ring (10) is provided with oil immersion ropes (12).

2. A marine stern shaft capable of preventing foreign matter from entering according to claim 1, characterized in that: The circular blades (3) are arranged in two groups, and five groups are arranged.

3. A marine stern shaft capable of preventing foreign matter from entering according to claim 1, characterized in that: The long blades (5) are provided with three.

4. The marine stern shaft capable of preventing foreign matters from entering according to claim 1, characterized in that: The material of the sealing rubber ring (9) is elastic rubber material.

5. A marine stern shaft capable of preventing foreign matter from entering according to claim 1, characterized in that: The oil immersion rope (12) is tightly wound with a plurality of turns on the side of the connecting rod (11).

6. A marine stern shaft capable of preventing foreign matter from entering according to claim 1, characterized by: The surface of the oil immersion rope (12) is covered with lubricating oil.

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