Air-cooled fuel injection pump plunger sleeve for diesel engine

Abstract

The utility model discloses an air-cooled fuel injection pump plunger sleeve for a diesel engine, relates to the technical field of plunger sleeve structures, and aims to solve the problems that an existing air-cooled fuel injection pump plunger sleeve for the diesel engine is poor in mounting effect and poor in sealing effect, and the service life of the air-cooled fuel injection pump plunger sleeve for the diesel engine is prolonged. According to the technical scheme, the air-cooled fuel injection pump for the diesel engine is characterized by comprising a plunger sleeve body, a mounting through groove is formed in the plunger sleeve body, the plunger sleeve body comprises a mounting seat, a limiting seat and a connecting seat, the limiting seat is arranged at the upper end of the mounting seat, and the connecting seat is arranged at the lower end of the mounting seat. A connecting seat is arranged at the lower end of the mounting seat, an adjusting groove hole is formed in the outer wall of the mounting seat, a sealing mounting groove is formed in the lower end of the limiting seat, a sealing gasket is mounted in the sealing mounting groove, and a plurality of grooves are formed in the lower end of the sealing gasket; and the plurality of grooves are sequentially distributed at the lower end of the sealing gasket.

Description

Technical Field

[0001] This utility model relates to the field of plunger sleeve structure technology, and in particular to a plunger sleeve for an air-cooled fuel injection pump for a diesel engine. Background Technology

[0002] The diesel engine fuel injection pump plunger sleeve refers to the paired plunger and plunger sleeve. It is one of the three precision components of the diesel engine fuel system. The plunger sleeve is the sleeve outside the plunger. The plunger sleeve can improve the quality of related supporting components such as air filter and fuel injector, and can control the cleanliness of engine oil and the amount of fuel injected. The quality of the plunger sleeve can directly affect the performance of the fuel injection pump.

[0003] The existing plunger sleeves for air-cooled fuel injection pumps used in diesel engines have poor installation performance and lack good sealing properties, which affects the operation of air-cooled fuel injection pumps used in diesel engines. Utility Model Content

[0004] The purpose of this invention is to provide a plunger sleeve for an air-cooled fuel injection pump used in diesel engines, which enables easy installation of the plunger sleeve while also providing excellent sealing performance.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A plunger sleeve for an air-cooled fuel injection pump of a diesel engine includes a plunger sleeve body with an internal mounting groove. The plunger sleeve body includes a mounting seat, a limiting seat, and a connecting seat. The upper end of the mounting seat has a limiting seat, and the lower end of the mounting seat has a connecting seat. The inner wall of the outer wall of the mounting seat has an adjusting slot, and the lower end of the limiting seat has a sealing mounting groove with a sealing gasket installed inside.

[0007] By adopting the above technical solution, the plunger can be easily installed through the installation through groove, the fuel injection quantity of the fuel injection pump can be easily adjusted through the adjustment slot, and the sealing gasket can improve the sealing performance of the plunger sleeve body.

[0008] Furthermore, the mounting base and the limiting base are an integral structure, and the mounting base and the connecting base are an integral structure.

[0009] By adopting the above technical solutions, the structure between the mounting seat and the limiting seat can be made more robust, and the structure between the limiting seat and the connecting seat can be made more robust. This makes the overall structure of the plunger sleeve body more robust, thereby increasing the overall strength of the plunger sleeve body and preventing the plunger sleeve body from being easily broken or damaged.

[0010] Furthermore, one end of the outer wall of the mounting base is provided with a mounting thread, and the mounting thread and the mounting base are an integral structure.

[0011] By adopting the above technical solution, the structure between the mounting thread and the mounting base can be made more robust. The mounting thread allows for easy installation of the plunger sleeve body, while preventing the plunger sleeve body from shaking or falling off during use.

[0012] Furthermore, one end of the limiting seat is provided with an arc-shaped end.

[0013] By adopting the above technical solution, the arc-shaped end can improve the protective effect of the limit seat, avoid wear on the limit seat, and prevent it from affecting the use of the plunger sleeve body.

[0014] Furthermore, the lower end of the sealing gasket is provided with a groove, and there are several grooves arranged sequentially at the lower end of the sealing gasket.

[0015] By adopting the above technical solution, the sealing gasket can be easily installed through the groove, and the installed sealing gasket can enable the plunger sleeve body to have a better sealing effect during installation.

[0016] Furthermore, a sealing ring is provided on the outside of the connecting seat, and the sealing ring is connected to the connecting seat by adhesive.

[0017] By adopting the above technical solution, the sealing effect of the lower end of the plunger sleeve body can be improved by setting the sealing ring, and the sealing ring and the connecting seat can be easily installed and fixed by adhesive.

[0018] 1. The arc-shaped end of this utility model enables the limiting seat to have a good protective effect, thus preventing wear and damage to one end of the limiting seat. A sealing gasket is installed at the lower end of the limiting seat, which can improve the sealing performance of the plunger sleeve body. The groove is designed to make the sealing gasket fit more closely, thereby improving the sealing effect and making the plunger sleeve body perform better.

[0019] 2. The present invention can easily install and fix the plunger sleeve body by means of the installation thread provided by the mounting base, and the sealing ring provided can improve the sealing performance of the connecting base installation, thus making the plunger sleeve body perform better. Attached Figure Description

[0020] Figure 1 This is a perspective view of the entire utility model;

[0021] Figure 2 This is an overall sectional view of the present invention;

[0022] Figure 3 This utility model Figure 2 A magnified view of part A.

[0023] In the figure: 1. Plunger sleeve body; 101. Mounting groove; 2. Mounting seat; 201. Mounting thread; 202. Adjustment slot; 3. Limiting seat; 301. Arc end; 302. Sealing mounting groove; 4. Connecting seat; 5. Sealing gasket; 501. Groove; 6. Sealing ring. Detailed Implementation

[0024] The method of this utility model will be further described in detail below with reference to the accompanying drawings.

[0025] See attached document Figure 1 , Figure 2 and Figure 3 A plunger sleeve for an air-cooled fuel injection pump for a diesel engine includes a plunger sleeve body 1. The plunger sleeve body 1 has an internal mounting groove 101. The plunger sleeve body 1 includes a mounting seat 2, a limiting seat 3, and a connecting seat 4. The upper end of the mounting seat 2 is provided with the limiting seat 3, and the lower end of the mounting seat 2 is provided with the connecting seat 4. The inner wall of the outer wall of the mounting seat 2 has an adjustment slot 202. The lower end of the limiting seat 3 has a sealing mounting groove 302. A sealing gasket 5 is installed inside the sealing mounting groove 302. The fuel injection quantity of the fuel injection pump can be easily adjusted through the adjustment slot 202, and the sealing gasket 5 can improve the sealing performance of the plunger sleeve body 1.

[0026] See attached document Figure 2 The mounting base 2 and the limiting seat 3 are integrated into one structure, and the mounting base 2 and the connecting seat 4 are integrated into one structure. One end of the outer wall of the mounting base 2 is provided with a mounting thread 201. The mounting thread 201 and the mounting base 2 are integrated into one structure. The integration of the mounting base 2 and the limiting seat 3, and the limiting seat 3 and the connecting seat 4 into one structure can improve the overall structural strength of the plunger sleeve body 1. The mounting thread 201 provided by the mounting base 2 can facilitate the installation of the plunger sleeve body.

[0027] See attached document Figure 1 , Figure 2 and Figure 3One end of the limiting seat 3 is provided with an arc-shaped end 301, and the lower end of the sealing gasket 5 is provided with a groove 501. Several grooves 501 are provided and distributed sequentially at the lower end of the sealing gasket 5. A sealing ring 6 is provided on the outside of the connecting seat 4. The sealing ring 6 is connected to the connecting seat 4 by adhesive. The arc-shaped end 301 provides a good protective effect for the limiting seat 3, thus preventing wear and damage to one end of the limiting seat 3. The sealing ring 6 improves the sealing performance of the connecting seat 4, thereby improving the performance of the plunger sleeve body 1.

[0028] Working principle: During use, the arc-shaped end 301 provides excellent protection for the limiting seat 3, preventing wear and damage at one end. A sealing gasket 5 is installed at the lower end of the limiting seat 3, improving the sealing performance of the plunger sleeve body 1. The groove 501 ensures a better fit for the sealing gasket 5, further enhancing the sealing effect and improving the performance of the plunger sleeve body 1. The installation thread 201 on the mounting seat 2 facilitates the installation and fixation of the plunger sleeve body 1. The sealing ring 6 improves the sealing performance of the connecting seat 4, further enhancing the performance of the plunger sleeve body 1.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A plunger sleeve for an air-cooled fuel injection pump for a diesel engine, comprising a plunger sleeve body (1), characterized in that: The plunger sleeve body (1) has an internal mounting groove (101). The plunger sleeve body (1) includes a mounting seat (2), a limiting seat (3), and a connecting seat (4). The upper end of the mounting seat (2) is provided with a limiting seat (3), and the lower end of the mounting seat (2) is provided with a connecting seat (4). The inner wall of the outer wall of the mounting seat (2) is provided with an adjustment slot (202). The lower end of the limiting seat (3) is provided with a sealing mounting groove (302), and a sealing gasket (5) is installed inside the sealing mounting groove (302).

2. The plunger sleeve for an air-cooled fuel injection pump for a diesel engine according to claim 1, characterized in that: The mounting base (2) and the limiting base (3) are an integral structure, and the mounting base (2) and the connecting base (4) are an integral structure.

3. The plunger sleeve for an air-cooled fuel injection pump for a diesel engine according to claim 2, characterized in that: One end of the outer wall of the mounting base (2) is provided with a mounting thread (201), and the mounting thread (201) and the mounting base (2) are an integral structure.

4. The plunger sleeve for an air-cooled fuel injection pump for a diesel engine according to claim 3, characterized in that: One end of the limiting seat (3) is provided with an arc-shaped end (301).

5. A plunger sleeve for an air-cooled fuel injection pump for a diesel engine according to claim 4, characterized in that: The sealing gasket (5) has a groove (501) inside its lower end. There are several grooves (501) arranged in sequence at the lower end of the sealing gasket (5).

6. A plunger sleeve for an air-cooled fuel injection pump for a diesel engine according to claim 5, characterized in that: A sealing ring (6) is provided on the outside of the connecting seat (4), and the sealing ring (6) is connected to the connecting seat (4) by adhesive.

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