Marine oil pump with piston rod sealing structure

Abstract

The utility model belongs to the technical field of marine oil pumps, and particularly relates to a marine oil pump with a piston rod sealing structure, which comprises an oil pump body, a telescopic cylinder, a movable plate, a piston rod, a piston, a mounting flange, an oil outlet and an oil inlet. When the piston rod sealing device is used, the sealing ring drives the connected inserting rod to be connected with the displacement block in an inserting mode, then the first rotating hand wheel is rotated, the bevel gear set is driven to rotate through the rotating rod, then the displacement block is driven to move through the two-way screw rod, the piston rod is sealed and closed through the displacement block through the sealing ring, and the sealing effect on the piston rod is improved; the piston rod is prevented from being exposed outside and rusted; and by rotating a rotating hand wheel II, a lead screw drives a cleaning brush to move through a displacement rod, and the cleaning brush can clean the filter screen, so that the filtering effect of the filter screen is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of marine oil pump technology, specifically a marine oil pump with a piston rod sealing structure. Background Technology

[0002] The main function of marine oil pumps is to transport liquids, such as fuel oil and lubricating oil, to meet the needs of ship operation. For example, in the fuel system, the oil pump is responsible for delivering fuel from the fuel tank to the main engine, generator and other equipment to ensure the ship's power supply.

[0003] When not in use, the piston rod of the existing marine oil pump cylinder is exposed. The marine environment is harsh, and the exposed piston rod is prone to corrosion, which affects the subsequent use of the marine oil pump. Summary of the Invention

[0004] The purpose of this invention is to provide a marine oil pump with a piston rod sealing structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a marine oil pump with a piston rod sealing structure, comprising an oil pump body, a telescopic cylinder, a movable plate, a piston rod, a piston, a mounting flange, an oil outlet, and an oil inlet. Telescopic cylinders are installed at both ends of the oil pump body. A movable plate is connected to one side of each telescopic cylinder. A piston rod is connected to the end of the movable plate near the telescopic cylinder. A piston is located at the end of the piston rod away from the movable plate. A mounting flange is located on the side of the oil pump body away from the movable plate. An oil outlet is located on the side of the oil pump body near the mounting flange. An oil inlet is located on the side of the oil outlet.

[0006] Preferably, a rotating handwheel is provided at the end of the movable plate away from the piston rod, a rotating rod is connected to one side of the rotating handwheel, and a bevel gear set is connected to one end of the rotating rod.

[0007] Preferably, one end of the bevel gear set has a bidirectional screw connected by a bearing, and the surface of the bidirectional screw is threaded with a displacement block.

[0008] Preferably, sealing rings are provided at both ends of the movable plate near the piston rod, and a plug rod is provided on the side of the sealing ring near the movable plate, with rubber blocks provided at both ends of the plug rod.

[0009] Preferably, a filter box is provided on one side of the oil inlet, the filter box is provided with symmetrically distributed filter screens, and a protective frame is provided on the top of the filter box.

[0010] Preferably, a lead screw connected by a bearing runs through the interior of the protective frame, a rotating handwheel is connected to the top of the lead screw, and a displacement rod is threaded onto the surface of the lead screw.

[0011] Preferably, a cleaning brush is provided at the bottom end of the displacement rod, and a discharge port is provided at the end of the filter box away from the protective frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. When this utility model is used, the sealing ring drives the connected plug rod to insert into the displacement block, so that the rubber clip at one end of the plug rod engages with the displacement block. Then, the rotating handwheel is rotated, thereby driving the bevel gear set to rotate through the rotating rod, and then driving the displacement block to move through the bidirectional screw. When the displacement block moves, it drives the plug rod and the sealing ring to move, so that the sealing ring closes on the surface of the piston rod. When the marine oil pump is in use, the sealing ring seals the surface of the piston rod, improving the sealing effect of the piston rod.

[0014] 2. When using this utility model, the added oil is filtered through the filter screen set inside the filter box. At the same time, rotating the second rotating handwheel drives the displacement rod to move through the lead screw. When the displacement rod moves, it can scrape and clean the oil sludge accumulated on one side of the filter screen through the cleaning brush to ensure the filtration effect of the filter screen. The scraped oil sludge will fall into the discharge port. Then, the solenoid valve at the bottom of the discharge port is opened to discharge the oil sludge. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a side view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the main cross-sectional structure of the filter box of this utility model.

[0019] In the diagram: 1. Oil pump body; 2. Telescopic cylinder; 3. Moving plate; 4. Piston rod; 5. Piston; 6. Mounting flange; 7. Oil outlet; 8. Oil inlet; 9. Rotary handwheel one; 10. Rotating rod; 11. Bevel gear set; 12. Double-acting screw; 13. Displacement block; 14. Sealing ring; 15. Insert rod; 16. Rubber clamp; 17. Filter box; 18. Filter screen; 19. Protective frame; 20. Lead screw; 21. Rotary handwheel two; 22. Displacement rod; 23. Cleaning brush; 24. Discharge port. 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] Please see Figures 1-3 This utility model provides a technical solution: a marine oil pump with a piston rod sealing structure, including an oil pump body 1, a telescopic cylinder 2, a moving plate 3, a piston rod 4, a piston 5, a mounting flange 6, an oil outlet 7, and an oil inlet 8. Telescopic cylinders 2 are installed at both ends of the oil pump body 1. A moving plate 3 is connected to one side of the telescopic cylinder 2. A piston rod 4 is connected to the end of the moving plate 3 near the telescopic cylinder 2. A piston 5 is located at the end of the piston rod 4 away from the moving plate 3. A mounting flange 6 is located on the side of the oil pump body 1 away from the moving plate 3. A sealing structure is also provided on the side of the oil pump body 1 near the mounting flange 6. There is an oil outlet 7, and an oil inlet 8 is provided on one side of the oil outlet 7. A rotating handwheel 9 is provided at the end of the moving plate 3 away from the piston rod 4. A rotating rod 10 is connected to one side of the rotating handwheel 9. A bevel gear set 11 is connected to one end of the rotating rod 10. A double-ended screw 12 connected by a bearing passes through one end of the bevel gear set 11. A displacement block 13 is threaded on the surface of the double-ended screw 12. Sealing rings 14 are provided at both ends of the moving plate 3 near the piston rod 4. A plug-in rod 15 is provided on the side of the sealing ring 14 near the moving plate 3. Rubber clips 16 are provided at both ends of the plug-in rod 15.

[0022] For specific implementation, please refer to Figures 1-3 As can be seen, when this utility model is used, the sealing ring 14 drives the connected plug rod 15 to plug into the displacement block 13, so that the rubber clip 16 at one end of the plug rod 15 engages with the displacement block 13. Then, the rotating handwheel 9 is rotated, thereby driving the connected rotating rod 10 to rotate, which in turn drives the internally connected bidirectional screw 12 to rotate through the bevel gear set 11. When the bidirectional screw 12 rotates, it drives the displacement block 13 connected to the surface thread to move, thereby driving the plug rod 15 and the sealing ring 14 to move, so that the sealing ring 14 can seal the surface of the piston rod 4, improving the sealing effect of the piston rod 4.

[0023] A filter box 17 is provided on one side of the oil inlet 8. The filter box 17 is provided with symmetrically distributed filter screens 18. A protective frame 19 is provided at the top of the filter box 17. A lead screw 20 connected by a bearing passes through the inside of the protective frame 19. A rotating handwheel 21 is connected to the top of the lead screw 20. A displacement rod 22 is threadedly connected to the surface of the lead screw 20. A cleaning brush 23 is provided at the bottom of the displacement rod 22. A discharge port 24 is provided at the end of the filter box 17 away from the protective frame 19.

[0024] For specific implementation, please refer to Figure 1 , Figure 3 and Figure 4 As can be seen, when this utility model is used, rotating the rotating handwheel 21 drives the connected lead screw 20 to rotate, thereby driving the displacement rod 22 connected to the surface thread to move. When the displacement rod 22 moves, it can scrape and clean the oil sludge accumulated on one side of the filter screen 18 through the cleaning brush 23 to ensure the filtration effect of the filter screen 18. The scraped filter oil sludge will fall into the discharge port 24. Then, the solenoid valve at the bottom of the discharge port 24 is opened to discharge the oil sludge.

[0025] In summary, when this utility model is used, the sealing ring 14 drives the connected plug rod 15 to plug into the displacement block 13, so that the rubber locking block 16 at one end of the plug rod 15 engages with the displacement block 13. Then, the rotating handwheel 9 is rotated, thereby driving the bevel gear set 11 to rotate through the rotating rod 10, and then driving the displacement block 13 to move through the bidirectional screw 12. When the displacement block 13 moves, it drives the plug rod 15 and the sealing ring 14 to move, so that the sealing ring 14 can seal the surface of the piston rod 4, improving the sealing effect of the piston rod 4. The contents not described in detail in this description belong to the prior art known to those skilled in the art.

[0026] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A marine oil pump with a piston rod sealing structure, comprising an oil pump body (1), a telescopic cylinder (2), a moving plate (3), a piston rod (4), a piston (5), a mounting flange (6), an oil outlet (7), and an oil inlet (8), characterized in that: Telescopic cylinders (2) are installed at both ends of the oil pump body (1). A movable plate (3) is connected to one side of the telescopic cylinder (2). A piston rod (4) is connected to one end of the movable plate (3) near the telescopic cylinder (2). A piston (5) is provided at the end of the piston rod (4) away from the movable plate (3). A mounting flange (6) is provided on the side of the oil pump body (1) away from the movable plate (3). An oil outlet (7) is provided on the side of the oil pump body (1) near the mounting flange (6). An oil inlet (8) is provided on the side of the oil outlet (7).

2. A marine oil pump with a piston rod sealing structure according to claim 1, characterized in that: The movable plate (3) is provided with a rotating handwheel (9) at one end away from the piston rod (4). A rotating rod (10) is connected to one side of the rotating handwheel (9), and a bevel gear set (11) is connected to one end of the rotating rod (10).

3. A marine oil pump with a piston rod sealing structure according to claim 2, characterized in that: One end of the bevel gear set (11) is connected to a bidirectional screw (12) via a bearing, and a displacement block (13) is threaded onto the surface of the bidirectional screw (12).

4. A marine oil pump with a piston rod sealing structure according to claim 1, characterized in that: The movable plate (3) is provided with sealing rings (14) at both ends near the piston rod (4), and a plug rod (15) is provided on the side of the sealing ring (14) near the movable plate (3). Rubber blocks (16) are provided at both ends of the plug rod (15).

5. A marine oil pump with a piston rod sealing structure according to claim 1, characterized in that: A filter box (17) is provided on one side of the oil inlet (8), and symmetrically distributed filter screens (18) are provided inside the filter box (17). A protective frame (19) is provided at the top of the filter box (17).

6. A marine oil pump with a piston rod sealing structure according to claim 5, characterized in that: The protective frame (19) has a lead screw (20) connected by a bearing running through its interior. The top of the lead screw (20) is connected to a rotating handwheel (21), and the surface of the lead screw (20) is threaded with a displacement rod (22).

7. A marine oil pump with a piston rod sealing structure according to claim 6, characterized in that: The bottom end of the displacement rod (22) is provided with a cleaning brush (23), and the end of the filter box (17) away from the protective frame (19) is provided with a discharge port (24).

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