A marine air duct filter

Abstract

The utility model relates to marine equipment technical field discloses a marine air pipe filter, including the connecting pipe who connects with air pipe and the filter core who is located in the connecting pipe, the one end outer wall of connecting pipe with air pipe junction is equipped with flange, the corresponding through -hole of flange is inserted with screw rod, the nut is sleeved in the both ends of screw rod, the one end of connecting pipe with air pipe junction is equipped with annular groove, the annular groove is equipped with sealing washer, the outer wall of sealing washer is connected with the sleeve ring that cross section is T, the horizontal one side inner wall of sleeve ring is respectively pasted with the outer wall of connecting pipe and air pipe, the filter core includes the core cylinder and filter piece, the filter piece is inserted in the core cylinder, the core cylinder adopts rubber material and with connecting pipe and filter piece all interference fit, the utility model discloses compared with prior art's advantage lies in: filter core is convenient to replace, and the sealing durability is durable and more resistant to use.

Description

Technical Field

[0001] This utility model relates to the field of marine equipment technology, specifically to a marine duct filter. Background Technology

[0002] Marine duct filters are devices installed in a ship's duct system to filter impurities and contaminants. They can effectively remove solid particles, oil droplets, and other impurities from the gas, preventing these impurities from damaging pipes, valves, instruments, and other equipment, and ensuring the normal operation of the ship's power system and the safe navigation of the ship.

[0003] The filter mainly consists of a housing and a filter element. One end of the housing is connected to the air duct via a flange and is equipped with a sealing gasket to ensure a tight seal. Therefore, it has the following drawbacks during use:

[0004] 1. Ship ventilation contains mixed pollutants such as salt spray, dust, and oil mist. The filter element has a limited dust holding capacity and is prone to clogging after long-term use, requiring frequent replacement. However, the disassembly and replacement of the filter element is cumbersome and labor-intensive.

[0005] 2. Gaskets used for sealing are corroded after long-term use, resulting in poor sealing performance and affecting the filtration effect and normal operation of the duct system. Utility Model Content

[0006] I. Technical problems to be solved

[0007] The technical problem this invention aims to solve is the inconvenience of filter element replacement and the reduced sealing performance after long-term use.

[0008] II. Technical Solution

[0009] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a marine duct filter, including a connecting pipe connected to the duct and a filter element located inside the connecting pipe;

[0010] The outer wall of the end of the connecting pipe that connects to the air duct is provided with a flange, and a screw is inserted into the corresponding through hole on the flange. Nuts are threaded onto both ends of the screw.

[0011] The connecting pipe is provided with an annular groove at one end where it connects to the air duct. A sealing ring is provided in the annular groove. A T-shaped collar is connected to the outer wall of the sealing ring. The inner wall of the horizontal side of the collar is respectively attached to the outer wall of the connecting pipe and the air duct.

[0012] The filter element includes a core cylinder and a filter element. The filter element is inserted into the core cylinder. The core cylinder is made of rubber and is interference-fitted with both the connecting pipe and the filter element.

[0013] As an improvement, the diameter of the sealing ring is larger than the diameter of the annular groove, and the sealing ring is made of rubber.

[0014] As an improvement, the length of the horizontal end of the collar is less than the distance between the two flanges, and it is made of rubber.

[0015] As an improvement, the cross-section of the core tube in the height direction is an L-shaped structure, and the inner wall of the end away from the air duct is inclined outward towards the side away from the center of the core tube, and the filter element is inserted into the core tube.

[0016] As an improvement, the inner wall of the connecting pipe is provided with a limiting ring that mates with the core cylinder.

[0017] As an improvement, the inner wall of the inclined core tube is connected to a traction rope.

[0018] III. Beneficial Effects

[0019] The advantages of this utility model compared with the prior art are as follows:

[0020] 1. This utility model uses an interference fit between the core tube, connecting tube, and filter element, eliminating the need for additional fasteners. It relies on the elasticity of rubber to achieve a tight fit and quick positioning, making replacement convenient.

[0021] 2. This utility model features a dual sealing structure with a separate sealing ring and a collar. The sealing ring is embedded in the annular groove, and the collar fits against the outer wall of the pipe to form protection, resulting in a better and more durable sealing effect. It can also be replaced separately after long-term use, ensuring that the filter and the duct are always sealed. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a marine duct filter according to the present invention.

[0023] Figure 2 This is an exploded view of a marine duct filter according to this utility model.

[0024] Figure 3 This is an exploded view of the internal structure of a marine duct filter according to this utility model.

[0025] Figure 4 This is an exploded cross-sectional structural diagram of a marine duct filter according to the present invention.

[0026] Figure 5 This is a front view of a marine duct filter according to this utility model.

[0027] As shown in the figure: 1. Connecting pipe; 2. Filter element; 3. Flange; 4. Screw; 5. Nut; 6. Annular groove; 7. Sealing ring; 8. Collar; 9. Core tube; 10. Filter element; 11. Limiting ring; 12. Traction rope. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] As attached Figure 1-5 As shown, a marine duct filter includes a connecting pipe 1 connected to the duct and a filter element 2 located inside the connecting pipe 1. The connecting pipe 1 is made of carbon steel, which has high strength and is resistant to corrosion in the marine environment. The outer wall of the end of the connecting pipe 1 that connects to the duct is provided with a flange 3. A screw 4 is inserted into the corresponding through hole on the flange 3. Nuts 5 are threaded onto both ends of the screw 4. The connecting pipe 1 is connected to the duct by passing the screw 4 through the through hole on the flange 3 and tightening the nuts 5 at both ends.

[0031] The connecting pipe 1 is provided with an annular groove 6 at one end where it connects to the air duct. A sealing ring 7 is provided in the annular groove 6. A T-shaped collar 8 is connected to the outer wall of the sealing ring 7. The inner wall of the horizontal side of the collar 8 is in contact with the outer wall of the connecting pipe 1 and the air duct respectively. The double sealing structure of the sealing ring 7 and the collar 8, with the sealing ring 7 embedded in the annular groove 6 and the collar 8 in contact with the outer wall of the connecting pipe 1 and the air duct to form protection, makes the sealing effect better and more durable, and can be replaced separately after long-term use, keeping the filter and the air duct in a sealed state at all times.

[0032] Furthermore, the diameter of the sealing ring 7 is larger than the diameter of the annular groove 6. The sealing ring 7 is made of rubber. After assembly, it is compressed to generate a pre-tightening force, resulting in a tighter seal. The elasticity of the rubber material can offset slight deformation of the pipeline, further improving the sealing performance.

[0033] Furthermore, the length of the horizontal end of the collar 8 is less than the distance between the two flanges 3, and it is made of rubber. When the flanges 3 are fastened together, the collar 8 is fitted onto the outer wall of the connecting pipe 1 after it is connected to the air duct, and is not affected by the flanges 3.

[0034] The filter element 2 includes a core cylinder 9 and a filter element 10. The filter element 10 is inserted into the core cylinder 9. The core cylinder 9 is made of rubber and is interference-fitted with both the connecting pipe 1 and the filter element 10. The core cylinder 9 is interconnected with the connecting pipe 1 and the filter element through the interference fit, without the need for additional fixing parts. It relies on the elasticity of the rubber to achieve a tight fit and quick positioning, making replacement convenient. The core cylinder is made of nitrile rubber, and the filter element is made of multi-layer glass fiber filter paper. Nitrile rubber is resistant to oil mist and has good elasticity. The filter element has high filtration efficiency, and the metal mesh enhances the structural strength.

[0035] Furthermore, the cross-section of the core cylinder 9 in the height direction is an L-shaped structure, and the inner wall of the end away from the air duct is inclined outward towards the side away from the center of the core cylinder 9. The filter element 10 is inserted into the core cylinder 9, so that the filter element 10 is inserted into the core cylinder 9 and attached to its vertical side, which has both axial positioning and radial support functions, fixing the position of the core cylinder 9. The inner wall of the inclined surface of the core cylinder 9 is connected to a traction rope 12. The traction rope 12 is made of nylon material, which is wear-resistant and moisture-resistant. The traction design simplifies the disassembly of the filter element. The traction rope 12 extends to the outside of the connecting pipe 1. When disassembling, the filter element 2 can be quickly pulled out by pulling the traction rope 12 without disassembling the connecting pipe 1.

[0036] Furthermore, the inner wall of the connecting tube 1 is provided with a limiting ring 11 that cooperates with the core cylinder 9, so that the position of the filter element 2 inserted into the connecting tube 1 is limited by the limiting ring 11. During installation, the filter element 2 can be directly pushed into the limiting ring 11 to complete the positioning, thus improving the assembly efficiency.

[0037] It should be noted that all components that come into contact with mixed pollutants from ships (salt spray, oil mist, dust) are preferably made of corrosion-resistant and elastic rubber materials (nitrile rubber, fluororubber). Structural support components are made of carbon steel (galvanized) or stainless steel 304, taking into account both strength and corrosion resistance. Standard parts such as flanges, bolts, and nuts all adopt common ship standard models, which can be directly adapted to the existing ship ventilation duct system without the need to modify the pipeline, thus reducing installation costs. This is an existing method and will not be described in detail. Those skilled in the art can easily implement it, so there is no need to elaborate.

[0038] The specific usage method is as follows: Connect the connecting pipe 1 and the air duct by passing the screw 4 through the through hole on the flange 3 and tightening the nuts 5 at both ends. A collar 8 is sleeved on the outside of the connecting pipe 1 and the air duct. The sealing ring 7 inside the collar 8 is embedded in the annular groove 6. The collar 8 fits against the outer wall of the connecting pipe 1 and the air duct to form a protective barrier, which can achieve long-term and durable sealing and can be replaced individually. The filter element 2 is inserted into the other end of the connecting pipe 1. The core cylinder 9 of the filter element 2 is pushed into the limiting ring 11. The filter element 10 is inserted into the core cylinder 9 to complete the installation. The core cylinder 9 is connected to the connecting pipe 1 and the filter element by interference fit. No additional fasteners are required. The tight fit and quick positioning are achieved by relying on the elasticity of the rubber. The inner wall of the inclined surface of the core cylinder 9 is connected to the traction rope 12. The traction rope 12 extends to the outside of the connecting pipe 1. When disassembling, the filter element 2 can be quickly pulled out by pulling the traction rope 12 without disassembling the connecting pipe 1, making the replacement of the filter element 2 convenient.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] 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.

[0041] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A marine duct filter, comprising a connecting pipe (1) connected to a duct and a filter element (2) located within the connecting pipe (1), characterized in that: The outer wall of the connecting pipe (1) connected to the air duct is provided with a flange (3), and a screw (4) is inserted into the corresponding through hole on the flange (3). Nuts (5) are threaded onto both ends of the screw (4). The connecting pipe (1) is provided with an annular groove (6) at one end connected to the air duct. A sealing ring (7) is provided in the annular groove (6). A T-shaped collar (8) is connected to the outer wall of the sealing ring (7). The inner wall of the horizontal side of the collar (8) is in contact with the outer wall of the connecting pipe (1) and the air duct respectively. The filter element (2) includes a core cylinder (9) and a filter element (10). The filter element (10) is inserted into the core cylinder (9). The core cylinder (9) is made of rubber and is interference-fitted with both the connecting pipe (1) and the filter element (10).

2. A marine duct filter according to claim 1, characterized in that: The diameter of the sealing ring (7) is larger than the diameter of the annular groove (6), and the sealing ring (7) is made of rubber.

3. A marine duct filter according to claim 2, characterized in that: The length of the horizontal end of the collar (8) is less than the distance between the two flanges (3), and it is made of rubber.

4. A marine duct filter according to claim 1, characterized in that: The cross-section of the core tube (9) in the height direction is L-shaped, and the inner wall of the end away from the air duct is inclined outward towards the side away from the center of the core tube (9). The filter element (10) is inserted into the core tube (9).

5. A marine duct filter according to claim 4, characterized in that: The inner wall of the connecting pipe (1) is provided with a limiting ring (11) that cooperates with the core cylinder (9).

6. A marine duct filter according to claim 4, characterized in that: The inner wall of the inclined core (9) is connected to a traction rope (12).

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