A marine plunger sleeve assembly with cushioning function

Abstract

This utility model discloses a marine plunger sleeve assembly with a buffer function, relating to the field of plunger sleeve technology. The plunger sleeve body has a connecting groove inside, and the plunger sleeve body is fixedly connected to the plunger body through the connecting groove. A buffer structure is provided at the bottom of the plunger sleeve body, and the buffer structure includes a first sealing ring, with a sealing gasket at the bottom of the first sealing ring. A second sealing ring is connected to the bottom of the sealing gasket, and the second sealing ring is fixedly connected to the plunger body. A connecting damper is provided at the top of the second sealing ring. Through the buffer mechanism, when the plunger sleeve body is connected to the plunger body, the first and second sealing rings seal the interface. When the plunger sleeve body or the plunger body shakes, the sealing gasket absorbs the pressure, and then the connecting damper contracts and resets, thereby offsetting the pressure caused by the shaking. This prevents the plunger body from shifting or leaking oil when connected to the plunger sleeve body.

Description

Technical Field

[0001] This utility model relates to the field of plunger sleeve technology, specifically a marine plunger sleeve assembly with a buffer function. Background Technology

[0002] Marine plunger sleeve assemblies are key components of marine diesel engine fuel injection pumps. Together with the plunger, they form a plunger pair, primarily used for precise fuel injection control. The plunger sleeve contains a chamber to house the plunger and allow it to reciprocate. The fit between the two is precise. However, existing marine plunger sleeve assemblies have some shortcomings, such as:

[0003] Application No.: CN202221585972.8 describes a marine plunger sleeve assembly with a buffer function. This device can buffer and support a deflected plunger and reset it, preventing the plunger from getting stuck due to deflection. At the same time, it reduces friction between the plunger and the plunger's moving chamber, reduces wear on the plunger surface, and improves the plunger's service life. However, in actual use, it is easy to cause oil leakage at the connection between the plunger body and the plunger sleeve when the piston slides, thereby reducing the sealing performance of the device during use.

[0004] Therefore, we propose a marine plunger sleeve assembly with a buffer function to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a marine plunger sleeve assembly with a buffer function to solve the problem mentioned in the background art that the plunger sleeve assembly currently on the market is prone to piston slippage and oil leakage at the connection between the plunger body and the plunger sleeve.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a marine plunger sleeve assembly with a buffer function, comprising a plunger body and a plunger sleeve body disposed on the outside of the plunger body;

[0007] The plunger sleeve body has a connecting groove inside, and the plunger sleeve body is fixedly connected to the plunger body through the connecting groove. The bottom of the plunger sleeve body has a buffer structure, and the buffer structure includes a first sealing ring. The bottom of the first sealing ring has a sealing gasket. The bottom of the sealing gasket is connected to a second sealing ring, and the second sealing ring is fixedly connected to the plunger body. The top of the second sealing ring has a connecting damper, and the top of the second sealing ring is fixedly connected to the first sealing ring through the connecting damper.

[0008] By setting up a buffer mechanism, when the plunger sleeve body is connected to the plunger body, the first sealing ring and the second sealing ring will seal the interface. When the plunger sleeve body or the plunger body shakes, the sealing gasket will absorb the pressure, and then the connection damper will also contract and reset, thereby offsetting the pressure caused by the shaking. This ensures that the plunger body will not shift or leak oil when connected to the plunger sleeve body.

[0009] As a preferred technical solution of this utility model, the bottom of the plunger sleeve body is fixedly connected to the first sealing ring, and the sealing gasket is made of waterproof soft rubber material and is fixedly connected to the first sealing ring and the second sealing ring. The plunger sleeve body is provided with a tight-fitting gasket inside.

[0010] The above technical solution enables the sealing gasket to be more stable when protecting the bottom of the plunger sleeve body, thereby increasing the stability of the equipment during operation.

[0011] As a preferred technical solution of this utility model, the plunger sleeve body is provided with a buffer damping inside, and a fitting pad is connected to the inner side of the buffer damping, and a sealing groove is provided on the inner side of the fitting pad.

[0012] The above technical solution enables the plunger sleeve body to apply pressure to the mating pad and sealing groove through buffer damping after the plunger body forms a sliding connection with the plunger body, thereby making the buffer damping and the inner side of the sealing groove more stable when they are mated with the plunger body.

[0013] As a preferred technical solution of this utility model, the sealing groove is composed of waterproof colloid, and the bonding pad and the inner side of the sealing groove are both sealed and bonded to the plunger body.

[0014] The above technical solution enables the bonding pad to be more firmly bonded and sealed with the plunger body, thereby increasing the sealing performance of the device.

[0015] As a preferred technical solution of this utility model, a protective pad is connected to the outer side of the buffer damper, and two sets of pull bolts are connected to the outer side of the protective pad, and the protective pad is fixedly connected to the inside of the plunger sleeve body.

[0016] The above technical solution enables the plunger sleeve body to apply pressure to the mating pad and sealing groove through buffer damping after the plunger body forms a sliding connection with the plunger body, thereby making the buffer damping and the inner side of the sealing groove more stable when they are mated with the plunger body.

[0017] As a preferred technical solution of this utility model, the protective pad is made of waterproof soft rubber material, and the top of the plunger sleeve body is provided with a threaded groove, and a flange is connected to the top of the threaded groove.

[0018] The above technical solution enables the top of the plunger sleeve body to be more stable when connected to the flange, thereby increasing the stability of the equipment during installation.

[0019] As a preferred technical solution of this utility model, a limiting ring is provided on the top of the flange, and the flange is fixedly connected to other equipment through the limiting ring.

[0020] The above technical solution enables the flange to fill the gaps in the connection with other equipment through the limiting ring, thereby increasing the sealing performance of the equipment during use.

[0021] Compared with the prior art, the beneficial effects of this utility model are: by setting the buffer mechanism, when the plunger sleeve body is connected to the plunger body, the first sealing ring and the second sealing ring will seal the interface. When the plunger sleeve body or the plunger body shakes, the sealing gasket will absorb the pressure, and then the connection damping will also contract and reset, thereby offsetting the pressure caused by the shaking. This ensures that the plunger body will not shift or leak oil when connected to the plunger sleeve body.

[0022] Furthermore, by setting a buffer damping, after the plunger sleeve body forms a sliding connection with the plunger body, the buffer damping can apply pressure to the fitting pad and sealing groove, thereby making the buffer damping and the inner side of the sealing groove more stable when they fit with the plunger body.

[0023] Furthermore, by using protective pads and pull bolts, when the plunger sleeve body is disassembled from the plunger body, the pull bolts can be used to open the protective pads and the fitting pads, thereby disconnecting the interior of the plunger sleeve body from the plunger body for disassembly. Attached Figure Description

[0024] Figure 1 This is a front view elevation diagram of the present utility model;

[0025] Figure 2 This is a three-dimensional structural schematic diagram of the front cross-section of this utility model;

[0026] Figure 3 This is a schematic diagram of the layered structure of the plunger sleeve body of this utility model;

[0027] Figure 4 This is a three-dimensional structural diagram of the bonding pad of this utility model.

[0028] In the figure: 1. Plunger sleeve body; 2. Plunger body; 3. First sealing ring; 4. Sealing gasket; 5. Second sealing ring; 6. Connecting damper; 7. Sealing gasket; 8. Buffer damper; 9. Fitting gasket; 10. Sealing groove; 11. Connecting groove; 12. Threaded groove; 13. Flange; 14. Limiting ring; 15. Protective gasket; 16. Bolt. Detailed Implementation

[0029] 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.

[0030] To address the problem of piston slippage and oil leakage at the connection between the plunger body and plunger sleeve in existing technologies, the following solution is disclosed. Please refer to [link / reference]. Figures 1-4 This utility model provides a technical solution: a marine plunger sleeve assembly with a buffer function, including a plunger body 2 and a plunger sleeve body 1 disposed on the outside of the plunger body 2;

[0031] The plunger sleeve body 1 has a connecting groove 11 inside, and the plunger sleeve body 1 is fixedly connected to the plunger body 2 through the connecting groove 11. The bottom of the plunger sleeve body 1 is provided with a buffer structure, and the buffer structure includes a first sealing ring 3. The bottom of the first sealing ring 3 is provided with a sealing gasket 4. The bottom of the sealing gasket 4 is connected to a second sealing ring 5, and the second sealing ring 5 is fixedly connected to the plunger body 2. The top of the second sealing ring 5 is provided with a connecting damper 6, and the top of the second sealing ring 5 is fixedly connected to the first sealing ring 3 through the connecting damper 6.

[0032] The bottom of the plunger sleeve body 1 is fixedly connected to the first sealing ring 3, and the sealing gasket 4 is made of waterproof soft rubber material and is fixedly connected to the first sealing ring 3 and the second sealing ring 5. The plunger sleeve body 1 is provided with a tight-fitting gasket 7 inside.

[0033] The plunger sleeve body 1 is provided with a buffer damper 8 inside, and a fitting pad 9 is connected to the inner side of the buffer damper 8. A sealing groove 10 is provided on the inner side of the fitting pad 9. The sealing groove 10 is composed of waterproof colloid, and the inner sides of the fitting pad 9 and the sealing groove 10 are sealed and fitted to the plunger body 2.

[0034] The buffer damper 8 is connected to a protective pad 15 on its outer side, and two sets of bolts 16 are connected to the outer side of the protective pad 15. The protective pad 15 is fixedly connected to the inside of the plunger sleeve body 1. The protective pad 15 is made of waterproof soft rubber material, and the top of the plunger sleeve body 1 is provided with a threaded groove 12. The top of the threaded groove 12 is connected to a flange 13. The top of the flange 13 is provided with a limiting ring 14, and the flange 13 is fixedly connected to other equipment through the limiting ring 14.

[0035] Working principle: When using this marine plunger sleeve assembly with buffer function, first connect the plunger sleeve body 1 and the plunger body 2, so that the second sealing ring 5 in the buffer mechanism is connected to the outside of the plunger body 2. When the plunger sleeve body 1 or the plunger body 2 shakes, the sealing gasket 4 between the first sealing ring 3 and the second sealing ring 5 will absorb the shaking, and the connection damping 6 will also extend or contract, thereby absorbing the pressure caused by the shaking and resetting the connection damping 6. In addition, the setting of the first sealing ring 3 can prevent oil leakage at the connection between the plunger sleeve body 1 and the plunger body 2.

[0036] When the plunger sleeve body 1 slides and fits against the plunger body 2 through the connecting groove 11, the buffer damper 8 will cause the fitting pad 9 and the sealing groove 10 to contract, thereby making the fitting pad 9 and the sealing groove 10 slide and fit against the outer side of the plunger body 2.

[0037] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A marine plunger sleeve assembly with a buffer function, comprising a plunger body (2) and a plunger sleeve body (1) disposed on the outside of the plunger body (2); Its features are: The plunger sleeve body (1) has a connecting groove (11) inside, and the plunger sleeve body (1) is fixedly connected to the plunger body (2) through the connecting groove (11). The bottom of the plunger sleeve body (1) has a buffer structure, and the buffer structure includes a first sealing ring (3). The bottom of the first sealing ring (3) has a sealing pad (4). The bottom of the sealing pad (4) is connected to a second sealing ring (5), and the second sealing ring (5) is fixedly connected to the plunger body (2). The top of the second sealing ring (5) has a connecting damper (6), and the top of the second sealing ring (5) is fixedly connected to the first sealing ring (3) through the connecting damper (6).

2. The marine ram sleeve assembly with a cushioning function according to claim 1, wherein, The bottom of the plunger sleeve body (1) is fixedly connected to the first sealing ring (3), and the sealing gasket (4) is made of waterproof soft rubber material and is fixedly connected to the first sealing ring (3) and the second sealing ring (5). The plunger sleeve body (1) is provided with a tight sealing gasket (7).

3. The marine plunger sleeve assembly with buffer function according to claim 2, characterized in that, The plunger sleeve body (1) is provided with a buffer damper (8) inside, and a fitting pad (9) is connected to the inner side of the buffer damper (8), and a sealing groove (10) is provided on the inner side of the fitting pad (9).

4. The marine plunger sleeve assembly with buffer function according to claim 3, characterized in that, The sealing groove (10) is composed of waterproof colloid, and the inner side of the bonding pad (9) and the sealing groove (10) are sealed and bonded to the plunger body (2).

5. The marine plunger sleeve assembly with buffer function according to claim 3, characterized in that, The buffer damper (8) is connected to a protective pad (15) on the outside, and two sets of pull bolts (16) are connected to the outside of the protective pad (15), and the protective pad (15) is fixedly connected to the inside of the plunger sleeve body (1).

6. The marine plunger sleeve assembly with buffer function according to claim 5, characterized in that, The protective pad (15) is made of waterproof soft rubber, and the top of the plunger sleeve body (1) is provided with a threaded groove (12), and the top of the threaded groove (12) is connected to a flange (13).

7. The marine plunger sleeve assembly with buffer function according to claim 6, characterized in that, The flange (13) is provided with a limiting ring (14) at the top, and the flange (13) is fixedly connected to other equipment through the limiting ring (14).

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