A new type of marine main diesel engine crankcase vent cap structure

Abstract

The utility model discloses a novel marine main diesel engine crankcase vent hole cap structure in the technical field of marine main diesel engine crankcase vent hole cap, including the oil pan A, the upper of oil pan A is provided with the outer shield, the lower surface front end and rear end both sides of outer shield all are fixedly connected with the support rod, and the oil pan A is fixedly connected with the outer shield through the support rod, through the oil pan collection oil dirt in oil gas mixture, avoid oil dirt to float to the deck, thoroughly eliminate the security risk such as slip, fire because of oil dirt, guarantee the safety of marine navigation and deck operation, and oil dirt can be conveniently discharged through the oil drain valve after centralized collection, and the frequency and work amount of deck cleaning are greatly reduced, and the outer shield design of rain and snow prevention delays the corrosion of components, reduces equipment replacement frequency and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the technical field of crankcase vent caps for marine main diesel engines, and in particular to a novel structure for crankcase vent caps for marine main diesel engines. Background Technology

[0002] The crankcase vent cap of a marine main diesel engine is a critical component ensuring the normal operation of the engine. Its core function is to expel the oil-gas mixture from the crankcase, achieving internal ventilation and preventing oil mist explosions, thus ensuring the stability and safety of crankcase operation. Existing marine vent cap designs lack effective oil-gas collection and protection mechanisms. When the oil-gas mixture is discharged, it diffuses directly into the atmosphere, and the resulting oil sludge easily adheres to the deck surface near the vent. This not only increases the risk of slippery decks and falls but also poses a fire hazard due to oil accumulation. Furthermore, the dispersed oil sludge makes deck cleaning difficult, significantly increasing the daily maintenance workload for crew members. In addition, existing vent caps lack dedicated rain and snow protection structures. In rainy or snowy weather, moisture directly contacts the vent cap body, accelerating corrosion and aging, shortening its service life, and increasing the cost of equipment replacement and maintenance. Therefore, an improved vent cap solution is needed that solves the problems of oil sludge dispersion, reduces cleaning difficulty, and prevents component corrosion. To this end, we propose a novel vent cap structure for marine main diesel engine crankcases. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a novel crankcase vent cap structure for marine main diesel engines, which can solve the technical problems mentioned in the background.

[0004] To solve the above technical problems, this utility model provides the following technical solution: a novel crankcase vent cap structure for a marine main diesel engine, comprising an oil collection plate A, an outer protective cover above the oil collection plate A, support rods fixedly connected to both the front and rear sides of the lower surface of the outer protective cover, the oil collection plate A and the outer protective cover being fixedly connected by the support rods, an oil collection plate B below the oil collection plate A, a support rod fixedly connected to the middle position of the lower surface of the oil collection plate B, a four-point ball valve provided on one side of the lower surface of the oil collection plate B, an oil collection plate fixedly connected inside the oil collection plate B, connecting blocks B fixedly connected to both ends of the oil collection plate B, connecting blocks A fixedly connected to both ends of the oil collection plate A, a connecting bolt provided at one end of the connecting block A, a baffle rotatably connected to one end of the connecting bolt, and a base rotatably connected to the other end of the connecting bolt, with the base rotatably connected to the connecting block A.

[0005] Preferably, the outer surface of the 1 / 4 ball valve is provided with an outer sleeve at one end, the top end of the outer sleeve is provided with a base plate, and the base plate is fixedly connected to the 1 / 4 ball valve. Both sides of the lower surface of the base plate are fixedly connected with sliding grooves, the inside of the sliding grooves is provided with sliders, and the sliders are fixedly connected to the outer sleeves. The top end of the sliders is fixedly connected with springs, and the springs are fixedly connected to the base plate. The rear end of the lower surface of the base plate is rotatably connected with a threaded rod, one end of the threaded rod is fixedly connected with a gear, the outer surface of the threaded rod is provided with a collar, and the collar is fixedly connected to the outer sleeve. One end of the 1 / 4 ball valve is rotatably connected with a cleaning wheel, and the inner side of the upper surface of the cleaning wheel is fixedly connected with a cleaning rod.

[0006] Preferably, the upper surface of the baffle is provided with a circular hole, and the inner wall of the circular hole and the outer surface of the connecting bolt are both provided with threaded grooves, and the baffle and the connecting bolt engage with each other.

[0007] Preferably, the inner wall of the collar and the outer surface of the threaded rod are both provided with threaded grooves, and the gear and the cleaning wheel mesh with each other.

[0008] Preferably, the cleaning wheel is in the shape of a hollow cylinder, and the inner side of the upper surface of the cleaning wheel is provided with a protrusion.

[0009] Compared with the prior art, the beneficial effects that this utility model can achieve are: 1. The oil collection pan collects oil sludge from the oil-gas mixture, preventing oil sludge from drifting onto the deck and completely eliminating safety hazards such as slipping and fire caused by oil sludge, ensuring the safety of ship navigation and deck operations; at the same time, the collected oil sludge can be conveniently discharged through the drain valve, greatly reducing the frequency and workload of deck cleaning, while the rainproof and snowproof outer cover design delays the corrosion of components, reducing the frequency of equipment replacement and maintenance costs.

[0010] 2. Pulling the outer sleeve can rotate the cleaning wheel, which in turn cleans the inner wall of the 1 / 4 ball valve, preventing the accumulation of oil or other foreign matter that could prevent the 1 / 4 ball valve from discharging properly. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the oil collecting plate B part of this utility model; Figure 3 This is a schematic diagram of the connecting bolt part of this utility model; Figure 4 This is a cross-sectional view of the outer sleeve portion of this utility model; Figure 5 This is a schematic diagram of the cleaning wheel part of this utility model; The components are: 1. Oil collection tray A; 2. Support rod; 3. Outer protective cover; 4. Connecting bolt; 5. Quarter ball valve; 6. Outer sleeve; 7. Support rod; 8. Oil collection tray B; 9. Oil collection plate; 10. Connecting block A; 11. Base; 12. Baffle; 13. Connecting block B; 14. Slider; 15. Spring; 16. Base plate; 17. Slide groove; 18. Collar; 19. Threaded rod; 20. Gear; 21. Cleaning rod; 22. Cleaning wheel. Detailed Implementation

[0012] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0013] Example: like Figures 1-5 As shown, a novel crankcase vent cap structure for a marine main diesel engine includes an oil collection tray A1. An outer protective cover 3 is installed above the oil collection tray A1. Support rods 2 are fixedly connected to both the front and rear sides of the lower surface of the outer protective cover 3. The oil collection tray A1 and the outer protective cover 3 are fixedly connected by the support rods 2. An oil collection tray B8 is installed below the oil collection tray A1. A support rod 7 is fixedly connected to the middle position of the lower surface of the oil collection tray B8. A four-point ball valve 5 is installed on one side of the lower surface of the oil collection tray B8. An oil collection plate 9 is fixedly connected inside the oil collection tray B8. Connecting blocks B13 are fixedly connected to both ends of the oil collection tray B8. Connecting blocks A10 are fixedly connected to both ends of the oil collection tray A1. A connecting bolt 4 is installed at one end of the connecting bolt 4. A baffle 12 is rotatably connected to one end of the connecting bolt 4. A base 11 is rotatably connected to the other end of the connecting bolt 4, and the base 11 is rotatably connected to the connecting block A10.

[0014] Specifically, a sleeve 6 is provided at one end of the outer surface of the 1 / 4 ball valve 5. A base plate 16 is provided at the top of the sleeve 6, and the base plate 16 is fixedly connected to the 1 / 4 ball valve 5. Slide grooves 17 are fixedly connected to both sides of the lower surface of the base plate 16. A slider 14 is provided inside the slide groove 17, and the slider 14 is fixedly connected to the sleeve 6. A spring 15 is fixedly connected to the top of the slider 14, and the spring 15 is fixedly connected to the base plate 16. A threaded rod 19 is rotatably connected to the rear end of the lower surface of the base plate 16. A gear 20 is fixedly connected to one end of the threaded rod 19. The outer surface of the threaded rod 19 is provided with... A collar 18 is fixedly connected to an outer sleeve 6. One end of a four-point ball valve 5 is rotatably connected to a cleaning wheel 22. A cleaning rod 21 is fixedly connected to the inner side of the upper surface of the cleaning wheel 22. A circular hole is provided on the upper surface of a baffle 12. Threaded grooves are provided on the inner wall of the circular hole and the outer surface of the connecting bolt 4. The baffle 12 and the connecting bolt 4 mesh with each other. Threaded grooves are provided on the inner wall of the collar 18 and the outer surface of the threaded rod 19. A gear 20 meshes with the cleaning wheel 22. The cleaning wheel 22 is a hollow cylinder, and a protrusion is provided on the inner side of the upper surface of the cleaning wheel 22.

[0015] The workflow of this utility model is as follows: This device is fitted onto the outside of the crankcase vent of the main diesel engine. The oil-gas mixture discharged from the crankcase is blocked by the outer cover 3 and falls into the oil collection trays A1 and B8. The collected oil is then discharged into a designated container periodically by opening the bottom four-point ball valve 5, completing the centralized treatment of the oil. The presence of oil collection trays A1 and B8 effectively prevents moisture from directly contacting the vent cap, avoiding corrosion. Moisture flowing from the surface of the outer cover 3 is discharged directly without affecting oil collection. When inspection or maintenance of the crankcase vent cap is required, the connecting bolt 4 is rotated to loosen the baffle 12 to the appropriate position. Then, the base 11 is used to rotate the baffle 12 and connect it to the connecting bolt. After removing the plug 4, remove the oil collection tray A1. Before regularly cleaning the internal oil stains, pull the outer sleeve 6. The outer sleeve 6 will drive the slider 14 to descend. At this time, the spring 15 is stretched, and the collar 18 follows. When the collar 18 descends, the threaded rod 19 will be driven to rotate, which will cause the gear 20 to rotate. At this time, the cleaning wheel 22 will also rotate. Finally, the cleaning rod 21 is used to clean the inner wall of the four-quarter ball valve 5. When the outer sleeve 6 is released, the spring 15 will drive the slider 14, the outer sleeve 6 and the collar 18 to rebound. The threaded rod 19 will rotate in the opposite direction, which will cause the gear 20 to drive the cleaning wheel 22 to rotate in the opposite direction. At this time, the cleaning rod 21 will clean the inner wall of the four-quarter ball valve 5 again to ensure that the four-quarter ball valve 5 is not blocked.

[0016] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0017] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel crankcase vent cap structure for a marine main diesel engine, comprising an oil collection plate A (1), characterized in that: An outer protective cover (3) is provided above the oil collection plate A (1). Support rods (2) are fixedly connected to both the front and rear sides of the lower surface of the outer protective cover (3). The oil collection plate A (1) and the outer protective cover (3) are fixedly connected by the support rods (2). An oil collection plate B (8) is provided below the oil collection plate A (1). A support rod (7) is fixedly connected to the middle position of the lower surface of the oil collection plate B (8). A four-point ball valve (5) is provided on one side of the lower surface of the oil collection plate B (8). (8) is internally fixedly connected to an oil collecting plate (9). Both sides of the oil collecting plate B (8) are fixedly connected to a connecting block B (13). Both sides of the oil collecting plate A (1) are fixedly connected to a connecting block A (10). One end of the connecting block A (10) is provided with a connecting bolt (4). One end of the connecting bolt (4) is rotatably connected to a baffle (12). The other end of the connecting bolt (4) is rotatably connected to a base (11), and the base (11) is rotatably connected to the connecting block A (10).

2. The novel crankcase vent cap structure for a marine main diesel engine according to claim 1, characterized in that: The outer surface of the four-point ball valve (5) is provided with an outer sleeve (6) at one end. The top end of the outer sleeve (6) is provided with a base plate (16), and the base plate (16) is fixedly connected to the four-point ball valve (5). The lower surface of the base plate (16) is fixedly connected with two sides of a sliding groove (17). The sliding groove (17) is provided with a slider (14), and the slider (14) is fixedly connected to the outer sleeve (6). The top end of the slider (14) is fixedly connected with a spring (15), and the spring (15) is fixedly connected to the base plate (16). The lower end of the base plate (16) is rotatably connected with a threaded rod (19). One end of the threaded rod (19) is fixedly connected with a gear (20). The outer surface of the threaded rod (19) is provided with a collar (18), and the collar (18) is fixedly connected to the outer sleeve (6). One end of the four-point ball valve (5) is rotatably connected with a cleaning wheel (22), and the inner side of the upper surface of the cleaning wheel (22) is fixedly connected with a cleaning rod (21).

3. The novel crankcase vent cap structure for a marine main diesel engine according to claim 1, characterized in that: The upper surface of the baffle (12) is provided with a circular hole, and the inner wall of the circular hole and the outer surface of the connecting bolt (4) are both provided with threaded grooves, and the baffle (12) and the connecting bolt (4) mesh with each other.

4. The novel crankcase vent cap structure for a marine main diesel engine according to claim 2, characterized in that: The inner wall of the collar (18) and the outer surface of the threaded rod (19) are both provided with threaded grooves, and the gear (20) meshes with the cleaning wheel (22).

5. The novel crankcase vent cap structure for a marine main diesel engine according to claim 2, characterized in that: The cleaning wheel (22) is a hollow cylinder, and the inner side of the upper surface of the cleaning wheel (22) is provided with protrusions.

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