Marine low-speed machine ignition oil pump discharge device
By designing a discharge device on the marine low-speed diesel engine pilot oil pump, the oil leakage problem is solved, timely discharge of leaked oil and filtration of impurities is achieved, and the risks of fuel leakage and oil accumulation are reduced.
Patent Information
- Application Number
- CN202421334032.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-12
AI Technical Summary
Marine low-speed diesel engine pilot oil pumps are prone to oil leakage during work, resulting in fuel leakage and risk of oil accumulation at the bottom of the pilot oil pump housing.
A marine low-speed pilot oil pump drainage device is designed. By opening a port on the pilot oil pump, connecting the machine base drainage main pipe and a small water pump, the drainage pipeline is added, and the oil is drained by using a small water pump to drain, and impurities are filtered out through the filter device.
The timely discharge of oil leaked by the pilot oil pump is achieved, reducing the risk of fuel leakage and oil accumulation at the bottom of the pilot oil pump housing, and ensuring the smooth and safe oil drainage.
Smart Images
Figure CN222576775U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ships, in particular to a low-speed engine pilot oil pump discharge device for ships. Background Art
[0002] Most low-speed diesel engines are two-stroke engines, most medium-speed diesel engines are four-stroke engines, and high-speed diesel engines have both. The scavenging forms of marine two-stroke diesel engines include recirculation scavenging, port valve type direct scavenging and opposed piston port scavenging. High-power medium and low-speed diesel engines widely use heavy oil as fuel, while high-speed diesel engines still mostly use light diesel. One of the elements of the combustion process of marine low-speed diesel engines is pilot oil. The pilot oil pump is the supply unit of pilot oil. The working stability of the pilot oil pump directly determines the stability of the pilot oil supply, which can affect the stability of combustion. Specifically, when the pilot oil pump pumps the fuel, it is found through field tests that oil leaks into the housing of the pilot oil pump. Although a drain hole is provided in the housing of the marine main engine pilot oil pump, the drain hole is usually installed with a screw plug, which is blocked by the screw plug and will not be opened until the oil needs to be drained. In this way, the leaked oil cannot be drained in time, and there is a risk of fuel leakage and oil accumulation at the bottom of the pilot oil pump housing. For this reason, we propose a drain device for a marine low-speed engine pilot oil pump. Utility Model Content
[0003] The utility model provides a marine low-speed engine priming oil pump discharge device, which solves the problems raised by the above-mentioned background technology.
[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a marine low-speed engine pilot oil pump discharge device, including a pilot oil pump, a through port is opened on the pilot oil pump, and the pilot oil pump is connected to the engine base discharge main pipe, the through port is connected to the pilot oil pump discharge pipe, and the pilot oil pump discharge pipe is connected to the engine base discharge main pipe, the pilot oil pump discharge pipe is connected to a small water pump for pumping oil, and a filter device for filtering oil is connected to the inlet of the small water pump, and the filter device extends into the through port, and the filter device is fixed in the through port.
[0005] Optionally, the filtering device includes a filtering body, a fixing plate, and filter paper, one end of the filtering body extends into the through opening, the inner wall of the filtering body is connected to the fixing plate via a bracket, one side of the fixing plate is connected to a ring-shaped filter paper, and one end of the filter paper is connected to the filtering body.
[0006] Optionally, the filter paper is designed to be in a folded line shape, and a fixing frame is fixedly connected to the fixing plate thereof, and a valve capable of closing the fixing frame is movably connected to the fixing frame.
[0007] Optionally, a spring is fixedly connected to the inner side of the valve, and one end of the spring is fixedly connected to the fixing plate.
[0008] Optionally, a mounting seat is fixedly connected to the small water pump, the mounting seat abuts against the priming oil pump, and a locking pin is movably connected to the mounting seat, one end of the locking pin is plugged into the filter body.
[0009] Optionally, the other end of the locking pin extends out of the mounting seat, and the other end of the locking pin and the mounting seat are commonly connected with a bolt, and the bolt is threadedly mounted on the ignition oil pump.
[0010] The utility model has the following beneficial effects:
[0011] 1. The marine low-speed engine pilot oil pump discharge device replaces the screw plug on the through port with a pilot oil pump discharge pipe connected to the engine base discharge main pipe, and then another discharge pipeline can be added. The leaked oil in the pilot oil pump flows into the engine base discharge main pipe through the discharge pipe to complete the discharge. The addition of a discharge pipeline can solve the problem of difficulty in discharging the leaked fuel in the pilot oil pump housing, so that the leaked fuel can be discharged at any time, thereby reducing the risk of fuel leakage and oil accumulation at the bottom of the pilot oil pump housing.
[0012] 2. The marine low-speed engine pilot oil pump discharge device can extract the leaked oil through a small water pump, making the oil discharge smoother, and through the setting of the spring, the remaining impurities in the oil can be filtered out to achieve the effect of protecting the small water pump. At the same time, through the setting of the valve, the filter paper can be replaced in time to ensure that the oil can be discharged smoothly, making the oil leakage safer. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the utility model;
[0014] Figure 2 This is a schematic diagram of the structure of the mounting base connection of the utility model;
[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the mounting seat connection of the utility model;
[0016] Figure 4 This is a schematic diagram of the structure of the filter main body connection of the utility model;
[0017] Figure 5 This is a schematic diagram of the cross-sectional structure of the filter body connection of the utility model;
[0018] Figure 6 This is a schematic diagram of the structure of the filter paper of the utility model;
[0019] Figure 7 It is a schematic diagram of the structure of point A of the utility model.
[0020] In the figure: 1. pilot oil pump; 2. pilot oil pump discharge pipe; 3. main discharge pipe of the base; 4. small water pump; 5. mounting base; 6. bolts; 7. filter body; 8. locking pin; 9. fixing plate; 10. valve; 11. fixing frame; 12. spring; 13. filter paper. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figures 1 to 7 A marine low-speed engine pilot oil pump discharge device comprises a pilot oil pump 1, a through port is provided on the pilot oil pump 1, and the pilot oil pump 1 is connected to a main discharge pipe 3 of a base, a pilot oil pump discharge pipe 2 is connected to the through port, and the pilot oil pump discharge pipe 2 is connected to the main discharge pipe 3 of the base, and a discharge pipe is added to solve the problem of difficulty in discharging leaked fuel in the pilot oil pump housing, so that the leaked fuel can be discharged at any time, thereby reducing the risk of fuel leakage and oil accumulation at the bottom of the pilot oil pump housing, the pilot oil pump discharge pipe 2 is connected to a small water pump 4 for pumping oil, so that the leaked oil can be discharged more smoothly to ensure the smooth discharge of oil, and a filtering device for filtering oil is connected to the inlet of the small water pump 4, thereby preventing impurities in the oil from entering the small water pump 4, thereby causing the small water pump 4 to be blocked, so as to better protect the small water pump 4, and at the same time the filtering device extends into the through port, and the filtering device is fixed in the through port.
[0023] See also Figures 1 to 7 The filtering device includes a filtering body 7, a fixing plate 9, and a filter paper 13. One end of the filtering body 7 extends into the through opening, and the inner wall of the filtering body 7 is connected to the fixing plate 9 through a bracket. Under normal circumstances, the filtered oil passes through the side wall of the filtering body 7 and converges into the small water pump 4. One side of the fixing plate 9 is connected to a ring-shaped filter paper 13, and one end of the filter paper 13 is connected to the filtering body 7. Under the action of the filter paper 13, impurities in the oil can be filtered.
[0024] See also Figures 1 to 7The filter paper 13 is designed to be in a zigzag shape, so that the filter paper 13 can increase the contact area with the oil, so that the oil is filtered more fully. The fixing plate 9 is fixedly connected to a fixing frame 11, and the fixing frame 11 is movably connected to a valve 10 that can close the fixing frame 11. The valve 10 can move relative to the fixing frame 11. When the filter paper 13 is blocked, the valve 10 can be opened under the push of hydraulic pressure to ensure the smooth discharge of the oil.
[0025] See also Figures 1 to 7 A spring 12 is fixedly connected to the inner side of the valve 10, and one end of the spring 12 is fixedly connected to the fixing plate 9. Under the action of the elastic force of the spring 12, the valve 10 can close the fixing frame 11 under normal circumstances, so that the oil can be filtered smoothly.
[0026] See also Figures 1 to 7 A mounting base 5 is fixedly connected to the small water pump 4, and the mounting base 5 is in contact with the priming oil pump 1, and a locking pin 8 is movably connected to the mounting base 5. The locking pin 8 can move along a fixed trajectory on the mounting base 5, and one end of the locking pin 8 is plugged into the filter body 7. Through the plugging of the locking pin 8, the filter body 7 can be stably installed and fixed.
[0027] See also Figures 1 to 7 The other end of the locking pin 8 extends out of the mounting seat 5, and the other end of the locking pin 8 and the mounting seat 5 are jointly connected with a bolt 6, and the bolt 6 is threadedly mounted on the pilot oil pump 1. The locking pin 8 can be fixed relative to the mounting seat 5 through the bolt 6, and under the action of the bolt 6, the small water pump 4 can be installed on the pilot oil pump 1.
[0028] In summary, when the marine low-speed engine pilot oil pump discharge device is used, the screw plug on the through port is replaced with the pilot oil pump discharge pipe 2 connected to the engine base discharge main pipe 3, and then another discharge pipeline can be added. The leaked oil in the pilot oil pump flows into the engine base discharge main pipe 3 through the discharge pipe 2 to complete the discharge. When it is installed, the lock pin 8 is moved to a state of being plugged into the filter body 7, and then it is fastened to the pilot oil pump 1 by the bolt 6. Under the action of the small water pump 4, the leaked oil in the pilot oil pump 1 can be extracted, the oil passes through the filter body 7, and then under the filtering action of the spring 12, the impurities remaining in the oil can be filtered out. When the impurities accumulated on the filter paper 13 are too much and blocked, the valve 10 can be pushed to move, and then the fixing frame 11 is opened, so that the filter body 7 can drain the oil smoothly.
[0029] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.
[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A marine low-speed engine pilot oil pump discharge device, comprising a pilot oil pump (1), a through port being provided on the pilot oil pump (1), and the pilot oil pump (1) being connected to a main discharge pipe (3) of a base, characterized in that: The through port is connected to a pilot oil pump discharge pipe (2), and the pilot oil pump discharge pipe (2) is connected to a main discharge pipe (3) of a base, the pilot oil pump discharge pipe (2) is connected to a small water pump (4) for pumping oil, and a filter device for filtering oil is connected to the inlet of the small water pump (4), and the filter device extends into the through port, and the filter device is fixed in the through port.
2. A marine low-speed engine pilot oil pump discharge device according to claim 1, characterized in that: The filtering device comprises a filtering body (7), a fixing plate (9), and a filter paper (13); one end of the filtering body (7) extends into the through opening; the inner wall of the filtering body (7) is connected to the fixing plate (9) via a bracket; one side of the fixing plate (9) is connected to an annular filter paper (13); one end of the filter paper (13) is connected to the filtering body (7).
3. A marine low-speed engine pilot oil pump discharge device according to claim 2, characterized in that: The filter paper (13) is designed to be in a folded line shape, and a fixing frame (11) is fixedly connected to the fixing plate (9), and a valve (10) capable of closing the fixing frame (11) is movably connected to the fixing frame (11).
4. A marine low-speed engine pilot oil pump discharge device according to claim 3, characterized in that: A spring (12) is fixedly connected to the inner side of the valve (10), and one end of the spring (12) is fixedly connected to the fixing plate (9).
5. A marine low-speed engine pilot oil pump discharge device according to claim 4, characterized in that: The small water pump (4) is fixedly connected to a mounting seat (5), the mounting seat (5) abuts against the priming oil pump (1), and a locking pin (8) is movably connected to the mounting seat (5), one end of the locking pin (8) is plugged into the filter body (7).
6. A marine low-speed engine pilot oil pump discharge device according to claim 5, characterized in that: The other end of the locking pin (8) extends out of the mounting seat (5), and the other end of the locking pin (8) and the mounting seat (5) are connected together with a bolt (6), wherein the bolt (6) is threadedly mounted on the priming oil pump (1).