Anti-locking structure for plunger and barrel assembly of diesel engine

Abstract

The utility model discloses a diesel engine plunger and barrel assembly anti-jamming structure, and particularly relates to the technical field of diesel engine plunger and barrel assemblies, the diesel engine plunger and barrel assembly anti-jamming structure comprises a plunger and barrel assembly body for a diesel engine, an oil inlet is formed in the outer wall of one side of the plunger and barrel assembly body, and a filtering assembly is arranged on one side of the plunger and barrel assembly body and used for filtering diesel oil in the diesel engine. The filter assembly comprises a filter box, a partition plate is fixedly arranged in the filter box, filter elements are arranged on the two sides of the partition plate, two sealing covers are arranged on the top of the filter box, and a first three-way pipe is fixedly arranged on the tops of the two sealing covers. Fine particles and impurities in diesel oil are filtered through the filter elements, so that the particles and the impurities can be prevented from blocking the interior of the plunger and barrel assembly body, the service life of the plunger and barrel assembly body is greatly prolonged, one of the two filter elements is standby, the other filter element is used, the electromagnetic valve is controlled to be opened and closed, the two filter elements are detached and replaced, and the service life of the plunger and barrel assembly body is prolonged. And meanwhile, normal operation of the plunger and barrel assembly main body is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engine plunger pairs, in particular to a diesel engine plunger pair anti-jamming structure. Background Art

[0002] At present, the plunger pair of a general diesel engine fuel injection pump includes a plunger sleeve and a plunger set in the plunger sleeve. When working, the plunger reciprocates at high speed in the plunger sleeve, compressing the fuel from the low-pressure chamber, increasing the pressure, providing injection and combustion. The fuel injection pump is the most important component of the diesel engine and is regarded as the "heart" component of the diesel engine. Among the many parts of the diesel engine fuel injection pump, the plunger and the plunger sleeve are the most important pair of precision parts in the fuel injection pump, which mainly play the role of controlling the injection amount and generating high injection pressure. Its working environment is extremely harsh, so the quality of the plunger pair seriously affects the use of the diesel engine.

[0003] For example, the plunger and plunger pair of a diesel engine fuel injection pump with prior art publication number CN204921226U improves the lubrication between the plunger and the plunger sleeve, reduces the occurrence of seizure, improves the sealing performance under high temperature and high pressure conditions, and reduces fuel leakage.

[0004] However, the above-mentioned prior art still has the following problems when in use: when diesel flows in the pipeline inside the diesel engine, the diesel and the inside of the pipeline will contain particles and impurities, and the particle impurities will enter the interior of the plunger pair together with the diesel, causing blockage of the plunger inside the plunger pair, causing the plunger to get stuck. Based on this, the utility model provides a diesel engine plunger pair anti-stuck structure. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a diesel engine plunger pair anti-stuck structure, which filters fine particles and impurities in the diesel through a filter element, thereby preventing the particles and impurities from clogging the inside of the plunger pair body and causing jamming, greatly extending the service life of the plunger pair body, and providing two filter elements, one for backup and one for use, and controlling the opening and closing of the solenoid valve at the same time to realize the disassembly and replacement of the two filter elements without affecting the normal operation of the plunger pair body, so as to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a diesel engine plunger pair anti-stuck structure, comprising a plunger pair main body for a diesel engine, an oil inlet being provided on an outer wall on one side of the plunger pair main body, a filter assembly being provided on one side of the plunger pair main body for filtering diesel in the diesel engine, the filter assembly comprising a filter box, a partition being fixedly provided inside the filter box, filter elements being provided on both sides of the partition, two sealing covers being provided on the top of the filter box, a same three-way pipe 1 being fixedly provided on the top of the two sealing covers, a three-way pipe 2 being fixedly provided on the bottom of the filter box, and the three-way pipe 2 and the three-way pipe 1 are both connected to the inside of the filter box, an oil outlet hose being fixedly provided at the bottom of the three-way pipe 2, an oil inlet hose being fixedly provided inside the oil inlet, and the oil inlet hose being connected to the oil outlet hose.

[0007] In a preferred embodiment, a mounting plate is fixedly provided on one side of the filter box close to the plunger pair body, and two first bolts distributed up and down are threadedly connected to the mounting plate. The mounting plate and the plunger pair body are fixed by the first bolts, which facilitates the disassembly of the filter box and the inspection of the interior of the filter box.

[0008] In a preferred embodiment, two solenoid valves are fixedly provided on the three-way pipe one and the three-way pipe two. Specifically, the solenoid valve is an industrial equipment controlled by electromagnetic and is an automated basic component for controlling fluids. It is used to control the opening and closing of the three-way pipe one and the three-way pipe two, and is more convenient to use.

[0009] In a preferred embodiment, limiting frames are fixedly provided on both sides of the partition, storage boxes are fixedly provided on the tops of the two limiting frames, and two filter elements are respectively arranged in the two storage boxes for supporting the filter elements.

[0010] In a preferred embodiment, a plurality of circular holes are formed at the bottom of the two storage boxes, and the plurality of circular holes are evenly distributed at the bottom of the storage boxes to increase the flow rate of the diesel.

[0011] In a preferred embodiment, a limiting hollow tube is fixedly provided on the oil inlet hose, one end of the oil outlet hose is inserted into the oil inlet hose and the limiting hollow tube, and rubber sealing rings are fixedly embedded on the inner wall of the oil inlet hose and the outer wall near one end of the oil outlet hose. Both rubber sealing rings are in contact with the outer wall of the oil outlet hose, so as to improve the sealing between the oil outlet hose and the oil inlet hose.

[0012] In a preferred embodiment, the outer wall of the limiting hollow tube is threadedly connected with a plurality of second bolts, and the limiting hollow tube and the oil outlet hose are fixed by the plurality of second bolts, so as to facilitate the disassembly of the oil outlet hose, and the two sealing covers and the filter box are fixed by the plurality of third bolts, so as to facilitate the disassembly of the sealing covers and the replacement of the filter element.

[0013] Technical effects and advantages of the utility model:

[0014] The utility model filters fine particles and impurities in diesel through the filter element, thereby preventing the particles and impurities from clogging the inside of the plunger pair body and causing it to get stuck, greatly extending the service life of the plunger pair body, and arranging two filter elements, one for backup and the other for use, while controlling the opening and closing of the solenoid valve to realize the disassembly and replacement of the two filter elements without affecting the normal operation of the plunger pair body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is the overall structural front view of the utility model;

[0017] Figure 3 It is a cross-sectional view of the filter box of the utility model;

[0018] Figure 4 It is a partial schematic diagram of the utility model;

[0019] Figure 5 This is a bottom view of the storage box and the limiting frame of the utility model.

[0020] The reference numerals are: 1, plunger assembly body; 2, oil inlet; 3, filter assembly; 4, tee pipe 1; 5, tee pipe 2; 6, oil outlet hose; 7, oil inlet hose; 8, mounting plate; 9, first bolt; 10, solenoid valve; 11, limit frame; 12, storage box; 13, circular hole; 14, limit hollow pipe; 15, rubber sealing ring; 16, second bolt; 17, third bolt;

[0021] 301, filter box; 302, partition; 303, filter element; 304, sealing cover. DETAILED DESCRIPTION

[0022] 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.

[0023] Refer to the instruction manual Figure 1-5The utility model provides a diesel engine plunger pair anti-stuck structure, including a plunger pair body 1 for a diesel engine, an outer wall of one side of the plunger pair body 1 is provided with an oil inlet 2, a filter assembly 3 is provided on one side of the plunger pair body 1 for filtering diesel in the diesel engine, the filter assembly 3 includes a filter box 301, a partition 302 is fixedly provided inside the filter box 301, filter elements 303 are provided on both sides of the partition 302, two sealing covers 304 are provided on the top of the filter box 301, and the two sealing covers 304 are fixed to the filter box 301 by a plurality of third bolts 17, so as to facilitate the removal of the sealing covers 304 and the replacement of the filter element 303;

[0024] The tops of the two sealing covers 304 are fixedly provided with a same three-way pipe 1 4, the bottom of the filter box 301 is fixedly provided with a three-way pipe 2 5, and the three-way pipe 2 5 and the three-way pipe 1 4 are both connected to the inside of the filter box 301, and two solenoid valves 10 are fixedly provided on the three-way pipe 1 4 and the three-way pipe 2 5. Specifically, the solenoid valve 10 is an industrial device controlled by electromagnetics, and is an automatic basic component for controlling the opening and closing of the three-way pipe 1 4 and the three-way pipe 2 5. The bottom of the three-way pipe 2 5 is fixedly connected with an oil outlet hose 6, and the oil inlet hose 7 is fixedly provided inside the oil inlet 2, and the oil inlet hose 7 is connected to the oil outlet hose 6;

[0025] In addition, a mounting plate 8 is fixedly provided on one side of the filter box 301 close to the plunger pair body 1, and two first bolts 9 distributed up and down are threadedly connected to the mounting plate 8. The mounting plate 8 is fixed to the plunger pair body 1 by the first bolts 9, which facilitates the removal of the filter box 301.

[0026] When in use, the diesel is transported to both sides of the partition 302 through the three-way pipe 1 4, then filtered by the filter element 303 and falls to the bottom of the filter box 301, and then transported to the oil inlet hose 7 through the three-way pipe 2 5 and the oil outlet hose 6, and then transported to the inside of the plunger pair body 1 through the oil inlet hose 7. The filter element 303 is used to filter the fine particles and impurities in the diesel, so as to avoid the particles and impurities clogging the inside of the plunger pair body 1 and causing it to get stuck, thereby greatly extending the service life of the plunger pair body 1, and two filter elements 303 are provided, one for backup and the other for use, and the electromagnetic valve 10 is controlled to open and close at the same time, so as to realize the disassembly and replacement of the two filter elements 303 without affecting the normal operation of the plunger pair body 1.

[0027] Refer to the instruction manual Figure 1-5 , both sides of the partition 302 are fixed with limit frames 11, and the tops of the two limit frames 11 are fixed with storage boxes 12, and two filter elements 303 are respectively arranged in the two storage boxes 12 for supporting the filter elements 303. The bottoms of the two storage boxes 12 are provided with a plurality of circular holes 13, and the plurality of circular holes 13 are evenly distributed at the bottoms of the storage boxes 12;

[0028] In addition, a limiting hollow tube 14 is fixedly provided on the oil inlet hose 7, one end of the oil outlet hose 6 is inserted into the oil inlet hose 7 and the limiting hollow tube 14, and a rubber sealing ring 15 is fixedly embedded on the inner wall of the oil inlet hose 7 and the outer wall near one end of the oil outlet hose 6, and the two rubber sealing rings 15 are in contact with the outer wall of the oil outlet hose 6, so as to improve the sealing performance between the oil outlet hose 6 and the oil inlet hose 7;

[0029] Moreover, the outer wall of the limiting hollow tube 14 is threadedly connected with a plurality of second bolts 16 , and the limiting hollow tube 14 and the oil outlet hose 6 are fixed by the plurality of second bolts 16 , so that the oil outlet hose 6 is easily disassembled.

[0030] The filter element 303 is supported for use by the storage box 12. After long-term use, the staff only needs to take out the storage box 12 to replace the filter element 303, and then put the storage box 12 back on the limiting frame 11. The limiting hollow tube 14 limits the oil outlet hose 6, thereby improving the connection firmness between the oil outlet hose 6 and the oil inlet hose 7. At the same time, the two rubber sealing rings 15 on the oil outlet hose 6 are in contact with the oil outlet hose 6, thereby improving the sealing between the oil outlet hose 6 and the oil inlet hose 7 and playing a role in leak prevention.

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A diesel engine plunger assembly anti-stuck structure, comprising a plunger assembly body (1) for a diesel engine, wherein an oil inlet (2) is provided on an outer wall of one side of the plunger assembly body (1). Features: A filter assembly (3) is provided on one side of the plunger assembly body (1) for filtering diesel in the diesel engine; The filter assembly (3) comprises a filter box (301), a partition (302) is fixedly provided inside the filter box (301), filter elements (303) are provided on both sides of the partition (302), two sealing covers (304) are provided on the top of the filter box (301), a same three-way pipe (1) (4) is fixedly provided on the top of the two sealing covers (304), a three-way pipe (2) (5) is fixedly provided on the bottom of the filter box (301), and the three-way pipe (2) (5) and the three-way pipe (1) (4) are both connected to the inside of the filter box (301); An oil outlet hose (6) is fixedly connected to the bottom of the second three-way pipe (5), and an oil inlet hose (7) is fixedly provided inside the oil inlet (2), and the oil inlet hose (7) is connected to the oil outlet hose (6).

2. The diesel engine plunger pair anti-stuck structure according to claim 1, Features: A mounting plate (8) is fixedly provided on one side of the filter box (301) close to the plunger pair body (1); two first bolts (9) distributed up and down are threadedly connected to the mounting plate (8); the mounting plate (8) and the plunger pair body (1) are fixed by the first bolts (9), so that the filter box (301) is easily disassembled.

3. The diesel engine plunger pair anti-stuck structure according to claim 1, Features: Two solenoid valves (10) are fixedly provided on the three-way pipe one (4) and the three-way pipe two (5) for controlling the opening and closing of the three-way pipe one (4) and the three-way pipe two (5).

4. The diesel engine plunger pair anti-stuck structure according to claim 1, Features: Limiting frames (11) are fixedly provided on both sides of the partition (302), storage boxes (12) are fixedly provided on the tops of the two limiting frames (11), and two filter elements (303) are respectively arranged in the two storage boxes (12) for supporting the filter elements (303).

5. The diesel engine plunger pair anti-stuck structure according to claim 1, Features: The bottoms of the two storage boxes (12) are each provided with a plurality of circular holes (13), and the plurality of circular holes (13) are evenly distributed on the bottoms of the storage boxes (12).

6. The diesel engine plunger pair anti-stuck structure according to claim 1, Features: A limiting hollow tube (14) is fixedly provided on the oil inlet hose (7), one end of the oil outlet hose (6) is inserted into the oil inlet hose (7) and the limiting hollow tube (14), and a rubber sealing ring (15) is fixedly embedded on the inner wall of the oil inlet hose (7) and the outer wall near one end of the oil outlet hose (6), and the two rubber sealing rings (15) are in contact with the outer wall of the oil outlet hose (6) to improve the sealing performance between the oil outlet hose (6) and the oil inlet hose (7).

7. The diesel engine plunger pair anti-stuck structure according to claim 6, Features: The outer wall of the position-limiting hollow tube (14) is threadedly connected with a plurality of second bolts (16); the position-limiting hollow tube (14) and the oil outlet hose (6) are fixed by the plurality of second bolts (16), so as to facilitate the disassembly of the oil outlet hose (6); and the two sealing covers (304) and the filter box (301) are fixed by a plurality of third bolts (17).

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