Additional purification device for marine air compressor
The quick-connect structure combining fixed pins, limit blocks, and springs, along with the mechanical locking design of sliding sleeves and balls, solves the complex problems of filter element and threaded head replacement in purification devices, achieving efficient and reliable equipment maintenance and meeting the needs of intelligent and unmanned maintenance in ships.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 交通运输部东海救助局宁波救助基地
- Filing Date
- 2025-06-13
- Publication Date
- 2026-04-24
AI Technical Summary
The replacement process for filter elements or purification pipes of existing marine air compressor auxiliary purification devices is complicated, requires specialized tools, and is time-consuming, which affects the efficiency of equipment maintenance. Especially when a sudden failure occurs during ship navigation, it causes the equipment to stop or operate at reduced load, making it difficult to meet the needs of intelligent and unmanned maintenance.
The quick-connect structure, which combines a fixed pin and a limit block, along with a spring to provide elastic force, enables tool-free unlocking and fixing of the purification tube; the mechanical locking structure, which uses a sliding sleeve and a ball bearing, allows for convenient replacement of the threaded head.
It enables rapid and secure replacement of purification pipes and threaded heads, improves equipment maintenance efficiency, reduces operational complexity and downtime risks, and meets the needs of intelligent and unmanned ship maintenance.
Smart Images

Figure CN224161813U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of purification devices, and in particular to an auxiliary purification device for a marine air compressor. Background Technology
[0002] Marine air compressor auxiliary purification devices are auxiliary equipment installed in marine air compressor systems to purify compressed air. Through modules such as filtration, separation, and adsorption, they remove solid particles, oil, moisture, and pollutants from the air. Their core function is to improve compressed air quality and increase its cleanliness, ensuring that the compressed air can provide good breathing for rescue personnel. They are widely used in main and auxiliary engine start-up, pneumatic control, instrument communication, and other scenarios, and are key equipment for ensuring compressed air quality in modern ships.
[0003] Existing marine air compressor auxiliary purification devices mainly purify compressed air through principles such as physical filtration, centrifugal separation, adsorption drying, and membrane separation, or by adopting a multi-stage combined purification method. Physical filtration relies on filter elements of different precision to intercept particulate impurities, centrifugal separation uses centrifugal force to separate oil and water, adsorption drying uses adsorbents such as silica gel and activated carbon to remove water vapor and oil vapor, and membrane separation uses the selective permeation characteristics of polymer membranes to separate water. The application of these principles can effectively solve the problem of pollution such as particles, oil, and water in compressed air, ensure that the output air meets the air requirements of ships, and improve the reliability and safety of equipment.
[0004] In the practical application of marine air compressor auxiliary purification devices, although they achieve efficient purification of compressed air through multiple technical approaches, significant shortcomings still exist in equipment maintenance. Currently, the replacement process for filter elements or purification pipes in most purification devices is complex, requiring specialized tools to disassemble flanges, bolts, and other fixing components, and even involving pipe disconnection and resealing. The operation procedures are cumbersome and time-consuming. For example, although traditional quick-release structures simplify some steps, there is still a risk of insufficient interface sealing under high-pressure environments. Crew members need to repeatedly adjust to ensure proper installation. These problems directly lead to extended equipment downtime for maintenance. Especially when filter element blockage occurs during ship navigation, the complex replacement process forces the air compressor to operate at reduced load, affecting the continuous air supply to the ship's power system or automated equipment. In addition, non-standardized replacement operations require a high level of technical proficiency from crew members, which can easily lead to secondary failures due to improper operation, further weakening the operating efficiency of the purification device. This contradicts the development trend of intelligent and unmanned maintenance of ship equipment. Therefore, how to optimize the quick replacement mechanism of purification pipes and achieve tool-free, low-time, and highly reliable maintenance operations has become a key breakthrough in improving the practicality of marine air compressor auxiliary purification devices. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an auxiliary purification device for marine air compressors, which aims to improve the problem of requiring complicated operations to replace the purification pipe during equipment use.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a marine air compressor auxiliary purification device, comprising a fixed pipe, a connector fixedly connected to one end of the fixed pipe, a pressure regulating component provided on one side of the fixed pipe, a butt joint provided on one side of the fixed pipe, a docking seat fixedly connected to one end of the butt joint, a plurality of purification pipes provided on one side of the docking seat, a connecting component provided at one end of each purification pipe, a limiting block fixedly connected to the other end of each purification pipe, a fixed component provided inside each limiting block, and a butt joint slidably connected to one end of one of the purification pipes;
[0007] Each of the fixing components includes a fixing pin, a limiting plate, and multiple springs. The outer wall of the fixing pin is slidably connected to the inside of the limiting block, the inner wall of the limiting plate is fixedly connected to the outer wall of the fixing pin, each spring is disposed inside the limiting block, one end of each spring is fixedly connected to the inside of the limiting block, and the other end of each spring is fixedly connected to one side of the fixing pin.
[0008] As a further description of the above technical solution:
[0009] Each of the connecting components includes a docking groove and a connecting groove, each of the docking grooves being formed at one end of the purification tube, and each of the connecting grooves being formed inside the purification tube.
[0010] As a further description of the above technical solution:
[0011] The pressure regulating assembly includes a pressure gauge and a regulating valve. One end of the pressure gauge is fixedly connected to one end of a fixed pipe, and one end of the regulating valve is fixedly connected to one side of the fixed pipe. A transport pipe is fixedly connected to one side of the fixed pipe, and one end of the transport pipe is provided with a threaded head.
[0012] As a further description of the above technical solution:
[0013] A connecting pipe is fixedly connected to one side of the threaded head, and a fixing groove is provided on the outer wall of the connecting pipe.
[0014] As a further description of the above technical solution:
[0015] One end of the transport pipe is slidably connected to a sliding sleeve, and the other end of the transport pipe is fixedly connected to a fixing ring.
[0016] As a further description of the above technical solution:
[0017] A second spring is provided inside the sliding sleeve. One end of the second spring is fixedly connected inside the sliding sleeve, and the other end of the second spring is fixedly connected to one side of the fixed ring.
[0018] As a further description of the above technical solution:
[0019] The transport pipe has multiple ball bearings slidably connected inside, and multiple sliding grooves are formed inside the transport pipe.
[0020] As a further description of the above technical solution:
[0021] The balls are arranged in a ring array inside the transport tube, and the outer wall of each ball is slidably connected to the inside of a sliding groove.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the purification tube is first held and moved to one side, so that the inner wall of the other purification tube squeezes the fixing pin and retracts into the limiting block, thereby unlocking the purification tube. Then, the purification tube to be used is taken out and the limiting block at one end is slid into the other purification tube. At this time, the fixing pin pops out under the action of the spring and fixes the purification tube. This achieves the effect of easily replacing the purification tube with the one to be used during the use of the equipment, avoiding the problem of needing complicated operations to replace the purification tube during the use of the equipment, thereby improving the efficiency of the marine air compressor auxiliary purification device.
[0024] 2. In this utility model, first hold the sliding sleeve and push it to one side to unlock the threaded head. Then remove it and take out the threaded head of the corresponding size. Insert the connecting tube on one side of the threaded head into one end of the transport tube. Then release the sliding sleeve so that it rebounds under the action of the second spring and squeezes the ball into the fixed groove. This achieves the effect of changing the threaded head of different sizes according to the size of the air compressor connection during the use of the equipment. This avoids the problem of needing to use different equipment to connect to different air compressors during the use of the equipment, thereby improving the practicality of the marine air compressor auxiliary purification device. Attached Figure Description
[0025] Figure 1 This is a perspective view of an auxiliary purification device for a marine air compressor proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the exploded structure of the purification pipe of an auxiliary purification device for a marine air compressor proposed in this utility model.
[0027] Figure 3 for Figure 2 A magnified view of the structure at point A in the middle;
[0028] Figure 4 This is a schematic diagram of the internal structure of the transport pipe of a marine air compressor auxiliary purification device proposed in this utility model;
[0029] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point B in the middle.
[0030] Legend:
[0031] 1. Fixed pipe; 2. Pressure gauge; 3. Regulating valve; 4. Connector; 5. Transport pipe; 6. Threaded head; 7. Butt joint; 8. Connecting seat; 9. Purification pipe; 10. Connecting groove; 11. Connecting groove; 12. Limiting block; 13. Fixing pin; 14. Limiting plate; 15. Spring 1; 16. Butt joint pipe; 17. Connecting pipe; 18. Fixing groove; 19. Sliding sleeve; 20. Fixing ring; 21. Spring 2; 22. Ball bearing; 23. Sliding groove. Detailed Implementation
[0032] 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.
[0033] Reference Figures 1-3 This utility model provides an embodiment of an auxiliary purification device for a marine air compressor, comprising a fixed pipe 1, a connector 4 fixedly connected to one end of the fixed pipe 1 for connecting to a gas cylinder, a pressure regulating component provided on one side of the fixed pipe 1 for regulating the pressure of the compressed air input into the gas cylinder, a connecting connector 7 provided on one side of the fixed pipe 1, a docking seat 8 fixedly connected to one end of the connecting connector 7 for connecting a purification pipe 9, a plurality of purification pipes 9 provided on one side of the docking seat 8 for purifying compressed air, a connecting component provided at one end of each purification pipe 9 for connecting to the fixed component, a limiting block 12 fixedly connected to the other end of each purification pipe 9 for restricting the movement of the purification pipe 9, a fixing component provided inside each limiting block 12 for fixing two purification pipes 9, and a connecting pipe 16 slidably connected to one end of one of the purification pipes 9 for connecting to a gas cylinder or other equipment;
[0034] Each fixing component includes a fixing pin 13, a limiting plate 14, and multiple springs 15. The outer wall of the fixing pin 13 is slidably connected to the inside of the limiting block 12 to fix the two purification tubes 9. The inner wall of the limiting plate 14 is fixedly connected to the outer wall of the fixing pin 13 to limit the movement range of the fixing pin 13. Each spring 15 is disposed inside the limiting block 12 to provide elastic force to the fixing pin 13. One end of each spring 15 is fixedly connected to the inside of the limiting block 12, and the other end of each spring 15 is fixedly connected to one side of the fixing pin 13. Each connecting component includes a mating groove 10 and a connecting groove 1. 1. Each docking groove 10 is opened at one end of the purification pipe 9 to accommodate the limiting block 12. Each connecting groove 11 is opened inside the purification pipe 9 to accommodate the fixing pin 13. The pressure regulating component includes a pressure gauge 2 and a regulating valve 3. One end of the pressure gauge 2 is fixedly connected to one end of the fixed pipe 1 to display the pressure inside the transport pipe 5. One end of the regulating valve 3 is fixedly connected to one side of the fixed pipe 1 to regulate the pressure inside the transport pipe 5. The transport pipe 5 is fixedly connected to one side of the fixed pipe 1 for transporting compressed air. One end of the transport pipe 5 is provided with a threaded head 6 for connecting to an air compressor.
[0035] Specifically, when it is necessary to replace the purification tube 9 with a different function, the operator can first hold the purification tube 9 to be replaced and slide it smoothly to one side. During the movement, the inner wall of the purification tube 9 will make precise contact with the fixing pin 13, so that the fixing pin 13 will be squeezed and slowly retract into the limiting block 12. At this time, the purification tube 9 is successfully unlocked. Then, the operator takes out the purification tube 9 with the appropriate function, aligns the limiting block 12 at one end of it with the inside of another purification tube 9, and slowly pushes it in along the smooth guide structure. When the limiting block 12 reaches the predetermined position, the fixing pin 13 will quickly pop out under the strong and stable elastic force of the spring 15, accurately lock into the corresponding slot, and firmly fix the purification tube 9. The whole replacement process is smooth and efficient, convenient and stable, and greatly improves maintenance efficiency.
[0036] Reference Figure 4 and Figure 5A connecting pipe 17 is fixedly connected to one side of the threaded head 6 for connecting to the transport pipe 5. A fixing groove 18 is provided on the outer wall of the connecting pipe 17 for accommodating the ball bearings 22. A sliding sleeve 19 is slidably connected to one end of the transport pipe 5 for controlling the unlocking and fixing of the ball bearings 22. A fixing ring 20 is fixedly connected to one end of the transport pipe 5 for limiting the movement range of the sliding sleeve 19. A second spring 21 is provided inside the sliding sleeve 19 to provide elastic force to the sliding sleeve 19. One end of the second spring 21 is fixedly connected inside the sliding sleeve 19, and the other end of the second spring 21 is fixedly connected to one side of the fixing ring 20. Multiple ball bearings 22 are slidably connected inside the transport pipe 5 for controlling the unlocking and fixing of the connecting pipe 17. Multiple sliding grooves 23 are provided inside the transport pipe 5 for accommodating the ball bearings 22. The ball bearings 22 are arranged in a ring array inside the transport pipe 5, and the outer wall of each ball bearing 22 is slidably connected inside the sliding groove 23.
[0037] Specifically, when the threaded head 6 needs to be replaced, the operator places their palm on the sliding sleeve 19 and pushes it to one side with a uniform and stable force. As the sliding sleeve 19 moves, the limiting structure that originally locked the threaded head 6 gradually separates, allowing the threaded head 6 to be successfully unlocked. Then, the operator gently removes the unlocked threaded head 6. Next, the operator takes out a threaded head 6 of the appropriate size and carefully aligns the connecting tube 17 on one side with the port of the transport tube 5 and slowly inserts it. After the connecting tube 17 is fully inserted, the operator releases the tightly gripped sliding sleeve 19. Under the elastic force of the second spring 21, the sliding sleeve 19 quickly springs back to its original position. During this process, the ball bearings 22 inside the sliding sleeve 19 are squeezed and embedded into the fixing groove 18, forming a stable mechanical lock. Thus, the replacement of the threaded head 6 is completed in one go, demonstrating the efficiency and reliability brought by the precision mechanical structure.
[0038] Working principle: When using the marine air compressor with the attached purification device, if it is necessary to replace the purification tube 9 with a different function, first hold the purification tube 9 and move it to one side, so that the inner wall of the other purification tube 9 presses against the fixing pin 13 and retracts into the limiting block 12, thereby unlocking the purification tube 9. Then take out the purification tube 9 to be used and slide the limiting block 12 at one end into the other purification tube 9. At this time, the fixing pin 13 pops out under the action of spring 15 and fixes the purification tube 9, thus completing the replacement of the purification tube 9. When it is necessary to replace the threaded head 6, first hold the sliding sleeve 19 and push it to one side, so that the threaded head 6 is unlocked. Then remove it and take out the threaded head 6 of the corresponding size. Insert the connecting tube 17 on one side into one end of the transport tube 5. Then release the sliding sleeve 19 so that it rebounds under the action of spring 21 and squeezes the ball 22 into the fixing groove 18, thus completing the replacement of the threaded head 6.
[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A marine air compressor auxiliary purification device, comprising a fixed pipe (1), characterized in that: One end of the fixed tube (1) is fixedly connected to a connector (4), a pressure regulating component is provided on one side of the fixed tube (1), a connector (7) is provided on one side of the fixed tube (1), a docking seat (8) is fixedly connected to one end of the connector (7), a plurality of purification tubes (9) are provided on one side of the docking seat (8), a connecting component is provided at one end of each purification tube (9), a limiting block (12) is fixedly connected to the other end of each purification tube (9), a fixing component is provided inside each limiting block (12), and a connecting tube (16) is slidably connected to one end of one of the purification tubes (9). Each of the fixing components includes a fixing pin (13), a limiting plate (14), and a plurality of springs (15). The outer wall of the fixing pin (13) is slidably connected to the inside of the limiting block (12), and the inner wall of the limiting plate (14) is fixedly connected to the outer wall of the fixing pin (13). Each spring (15) is disposed inside the limiting block (12), with one end of each spring (15) fixedly connected to the inside of the limiting block (12), and the other end of each spring (15) fixedly connected to one side of the fixing pin (13).
2. The marine air compressor auxiliary purification device according to claim 1, characterized in that: Each of the connecting components includes a docking groove (10) and a connecting groove (11), each of the docking grooves (10) being formed at one end of the purification tube (9), and each of the connecting grooves (11) being formed inside the purification tube (9).
3. The marine air compressor auxiliary purification device according to claim 1, characterized in that: The pressure regulating assembly includes a pressure gauge (2) and a regulating valve (3). One end of the pressure gauge (2) is fixedly connected to one end of the fixed pipe (1), and one end of the regulating valve (3) is fixedly connected to one side of the fixed pipe (1). A transport pipe (5) is fixedly connected to one side of the fixed pipe (1), and a threaded head (6) is provided at one end of the transport pipe (5).
4. The marine air compressor auxiliary purification device according to claim 3, characterized in that: A connecting pipe (17) is fixedly connected to one side of the threaded head (6), and a fixing groove (18) is provided on the outer wall of the connecting pipe (17).
5. The marine air compressor auxiliary purification device according to claim 3, characterized in that: One end of the transport pipe (5) is slidably connected to a sliding sleeve (19), and the other end of the transport pipe (5) is fixedly connected to a fixing ring (20).
6. The marine air compressor auxiliary purification device according to claim 5, characterized in that: The sliding sleeve (19) is provided with a second spring (21). One end of the second spring (21) is fixedly connected to the inside of the sliding sleeve (19), and the other end of the second spring (21) is fixedly connected to one side of the fixed ring (20).
7. The marine air compressor auxiliary purification device according to claim 3, characterized in that: The transport pipe (5) has multiple ball bearings (22) slidably connected inside, and multiple sliding grooves (23) are provided inside the transport pipe (5).
8. The marine air compressor auxiliary purification device according to claim 7, characterized in that: The balls (22) are arranged in a ring array inside the transport pipe (5), and the outer wall of each ball (22) is slidably connected to the sliding groove (23).