Tail shaft with waterproof sealing structure

Abstract

The utility model relates to the technical field of stern shafts, and discloses a stern shaft with a waterproof sealing structure, which comprises a shell, the outer side of the shell is in sliding connection with a shaft sleeve, the right side surface of the shaft sleeve is connected with a first gasket, the outer side of the shell is sleeved with a first end cover, and the outer side of the first end cover is connected with a second gasket. A screw rod is rotationally connected into the shell, a second end cover is installed on the side, away from the connecting opening, of the shaft sleeve, and a leather cup is arranged on the left side of the second end cover. According to the tail shaft with the waterproof sealing structure, the outer side of the shaft sleeve is fixedly installed on the shell through the jackscrew, the situation that the stability of the overall structure is affected by impact generated by rotation of the tail shaft is prevented, the leather cup can provide good sealing performance, part of pressure and vibration can be absorbed, and the overall stability is improved; the screw rod can discharge liquid conveyed from the connecting port towards the tail shaft, water can be prevented from flowing inwards, and the overall sealing performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of stern shaft technology, specifically a stern shaft with a waterproof sealing structure. Background Technology

[0002] Tail shafts with waterproof sealing structures are commonly used in various mechanical devices to prevent moisture and other contaminants from entering the bearings and internal mechanical components, thereby protecting the normal operation of the device. Tail shafts are often exposed to humid or water-immersed environments. If moisture or other contaminants enter the tail shaft, it will shorten the service life of the equipment.

[0003] Traditional sealing structures are complex to install and have a single sealing structure, making them prone to seal failure due to improper installation. Traditional sealing materials also lose elasticity, leading to seal failure. This results in a high maintenance frequency and increased maintenance costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, this utility model provides a tail shaft with a waterproof sealing structure to solve the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a tail shaft with a waterproof sealing structure, comprising a housing, a bushing slidably connected to the outer side of the housing, a first gasket connected to the right side surface of the bushing, a first end cap sleeved on the outer side of the housing, a second gasket connected to the outer side of the first end cap, a connection port fixedly installed on the side of the housing near the first end cap, a spiral rod rotatably connected inside the housing, a second end cap installed on the side of the bushing away from the connection port, and a leather cup provided on the left side of the second end cap.

[0008] Preferably, the first gasket has a ring-shaped structure and is made of rubber.

[0009] Preferably, the second gasket is located inside the first gasket, the second gasket has a ring structure, and the second gasket is made of high-strength steel.

[0010] Preferably, the top of the bushing is rotatably connected to a set screw, which extends through the bushing to the outside of the outer casing.

[0011] Preferably, the cross-sectional shape of the leather cup is J-shaped, and the material of the leather cup is polyurethane.

[0012] Preferably, the cross-sections of the first end cap and the second end cap are circular, and the diameter of one end of the circle is significantly larger than that of the other end.

[0013] Compared with the prior art, this utility model provides a tail shaft with a waterproof sealing structure, which has the following beneficial effects: The tail shaft with a waterproof sealing structure has its outer bushing fixedly installed on the outer shell by a set screw, preventing the impact generated by the rotation of the tail shaft from affecting the stability of the overall structure. The first gasket is made of rubber, which has good elasticity and cushioning performance, can absorb vibration, and can ensure good sealing of the structure at the installation point. The second gasket is made of high-strength steel, which can prevent the first gasket from deforming under long-term use or high pressure environment, thereby maintaining a good sealing state and extending the service life of the overall component. The small end of the first end cap can serve as a guide, making it easy to align the end cap during installation, reducing installation difficulty, and also enhancing sealing. The diaphragm can provide good sealing performance and can also absorb some pressure and vibration, improving overall stability. The screw rod can discharge the liquid conveyed from the connection port towards the tail shaft, which can prevent water from flowing inward and improve the overall sealing. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the screw rod structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the leather cup installation structure of this utility model.

[0018] In the diagram: 1. Outer shell; 2. Bushing; 3. First gasket; 4. Second gasket; 5. Connecting port; 6. First end cap; 7. Set screw; 8. Leather cup; 9. Second end cap; 10. Screw rod. Detailed Implementation

[0019] 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.

[0020] like Figure 1-4As shown, this utility model provides a technical solution: a tail shaft with a waterproof sealing structure, including a housing 1, a bushing 2 slidably connected to the outside of the housing 1, a first gasket 3 connected to the right surface of the bushing 2, a first end cap 6 sleeved on the outside of the housing 1, a second gasket 4 connected to the outside of the first end cap 6, a connection port 5 fixedly installed on the side of the housing 1 near the first end cap 6, a spiral rod 10 rotatably connected inside the housing 1, a second end cap 9 installed on the side of the bushing 2 away from the connection port 5, and a leather cup 8 provided on the left side of the second end cap 9.

[0021] Furthermore, the first gasket 3 has a ring-shaped structure and is made of rubber.

[0022] Specifically, the first gasket 3 made of rubber can effectively prevent water from leaking in and ensure the sealing of the connection.

[0023] Furthermore, the second gasket 4 is located inside the first gasket 3, and the second gasket 4 has a ring structure and is made of high-strength steel.

[0024] Specifically, the second gasket 4 provides stronger structural support for the first gasket 3, which can prevent the first gasket 3 from deforming under long-term use or high-pressure environment, thereby maintaining a good sealing condition.

[0025] Furthermore, a set screw 7 is rotatably connected to the top of the bushing 2, and the set screw 7 passes through the bushing 2 to the outside of the outer shell 1.

[0026] Specifically, the outer side of the bushing 2 is fixedly mounted on the outer casing 1 by the set screw 7 to prevent the impact caused by the rotation of the tail shaft from affecting the stability of the overall structure.

[0027] Furthermore, the cross-sectional shape of the leather cup 8 is J-shaped, and the material of the leather cup 8 is polyurethane.

[0028] Specifically, the 8-type leather cup usually has good wear resistance, can work for a long time under certain pressure and temperature conditions, and is relatively simple to install.

[0029] Furthermore, the cross-sections of the first end cap 6 and the second end cap 9 are circular, and the diameter of one end circle is significantly larger than that of the other end.

[0030] Specifically, the larger diameter end of the first end cap 6 and the second end cap 9 provides a better seal at the interface with the container or pipe, reducing the possibility of leakage, while the smaller diameter end can serve as a guide to facilitate alignment of the end caps during installation, reducing installation difficulty.

[0031] Working principle: First, the bushing 2 is fixedly connected to the outer shell 1 by the set screw 7. The first gasket 3 and the second gasket 4 are installed on the right side surface of the bushing 2. The bushing 2 is fixedly connected to the stern frame to reduce the possibility of the outer shell 1 loosening when the stern shaft rotates. Second, the outer shell 1 and the bushing 2 are slidably connected to the right side of the bushing 2 by the first end cap 6. The outer shell 1 is provided with a connection port 5 on the side near the first end cap 6. The outer shell 1 is rotatably connected to the screw rod 10, so that the liquid discharged through the connection port 5 is transported to the direction of the stern shaft through the screw rod 10. Finally, the bushing 2 is provided with a second end cap 9 on the side away from the connection port 5. The second end cap 9 is provided with a cup 8 on the left side of the second end cap 9. The second end cap 9 can provide support and positioning for the cup 8. The cup 8 can effectively prevent the liquid from flowing.

[0032] 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 tail shaft with a waterproof sealing structure, comprising a housing (1), characterized in that: A bushing (2) is slidably connected to the outer side of the outer shell (1). A first gasket (3) is connected to the right side surface of the bushing (2). A first end cap (6) is sleeved on the outer side of the outer shell (1). A second gasket (4) is connected to the outer side of the first end cap (6). A connection port (5) is fixedly installed on the side of the outer shell (1) near the first end cap (6). A spiral rod (10) is rotatably connected inside the outer shell (1). A second end cap (9) is installed on the side of the bushing (2) away from the connection port (5). A leather cup (8) is provided on the left side of the second end cap (9).

2. The tail shaft with a waterproof sealing structure according to claim 1, characterized in that: The first gasket (3) has a ring structure and is made of rubber.

3. The tail shaft with a waterproof sealing structure according to claim 1, characterized in that: The second gasket (4) is located inside the first gasket (3). The second gasket (4) has a ring structure and is made of high-strength steel.

4. A tail shaft with a waterproof sealing structure according to claim 1, characterized in that: The top of the bushing (2) is rotatably connected to a set screw (7), which passes through the bushing (2) to the outside of the outer shell (1).

5. A tail shaft with a waterproof sealing structure according to claim 1, characterized in that: The cross-sectional shape of the leather cup (8) is J-shaped, and the material of the leather cup (8) is polyurethane.

6. A tail shaft with a waterproof sealing structure according to claim 1, characterized in that: The cross-sections of the first end cap (6) and the second end cap (9) are circular, and the diameter of one end circle is significantly larger than that of the other end.

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