High-precision oil drain plug

Abstract

The utility model relates to the technical field of mechanical engineering, and discloses a high-precision oil drain plug which comprises a body, a connecting groove is formed in the center of the upper end face of the body, a wear-resistant layer is arranged on the inner side wall of the connecting groove, a bottom hole is formed in the center of the lower end face of the body, and an inner hole is formed in the center of the upper inner wall of the bottom hole. A vent hole is formed in the center of the upper inner wall of the inner hole, the upper end of the vent hole penetrates through the upper inner wall of the inner hole and is communicated to the lower end face of the connecting groove, a connecting layer is arranged on the outer side wall of the body, and external threads are arranged on the outer side wall of the connecting layer. According to the utility model, the side wall of the body is provided with the connecting layer and the connecting layer made of the nickel-based alloy material, so that the abrasion and corrosion of the whole body caused by long-time use and long-time soaking in oil liquid can be prevented, and the service life of the whole body can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, and in particular to a high-precision oil drain plug. Background Technology

[0002] Oil plugs are important components in mechanical equipment used to drain lubricating oil, coolant, or other working media. They are widely used in automobiles, ships, aviation, construction machinery, and other fields. Their main function is to ensure that old oil or liquid can be safely and effectively drained during equipment maintenance and to prevent leakage during equipment operation.

[0003] However, existing drain plugs still have some shortcomings and areas for improvement in practical use. Existing drain plugs are prone to stripping at the threaded connection during long-term tightening, resulting in a decrease in oil sealing effect. Furthermore, the overall structure of existing drain plugs also needs improvement in terms of sealing. Therefore, those skilled in the art provide a high-precision drain plug to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-precision oil drain plug. By setting the shape of the connecting groove to an internal hexagon, the overall anti-slip effect can be effectively improved. At the same time, by providing a wear-resistant layer of alloy steel on the inner sidewall of the connecting groove, the wear on the whole can be further reduced. By providing a connecting layer of nickel-based alloy material on the sidewall of the body, the wear and corrosion caused by long-term use and long-term immersion in oil can be prevented, thereby improving the service life of the whole.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision drain plug, comprising a body, a connecting groove provided at the center of the upper end face of the body, a wear-resistant layer provided on the inner side wall of the connecting groove, a bottom hole provided at the center of the lower end face of the body, an inner hole provided at the center of the upper inner wall of the bottom hole, a vent provided at the center of the upper inner wall of the inner hole, the upper end of the vent penetrating the upper inner wall of the inner hole and connecting to the lower end face of the connecting groove, a connecting layer provided on the outer side wall of the body, and an external thread provided on the outer side wall of the connecting layer;

[0006] By using the above technical solution, the shape of the connecting groove is set to an internal hexagon, which can effectively improve the overall anti-slip effect. At the same time, by setting an alloy steel wear-resistant layer on the inner side wall of the connecting groove, the wear of the whole can be further reduced. By setting a connecting layer on the side wall of the body, the nickel-based alloy connecting layer can prevent wear and corrosion caused by long-term use and long-term immersion in oil, thus improving the service life of the whole.

[0007] Furthermore, the connecting layer is made of a nickel-based alloy, and the connecting layer is welded to the sidewall of the main body;

[0008] The above technical solution has extremely high corrosion resistance and wear resistance, can remain stable in high-temperature environments, and can effectively improve the overall service life.

[0009] Furthermore, the wear-resistant layer is made of alloy steel;

[0010] The above technical solutions can withstand high loads and wear.

[0011] Furthermore, the lower end of the center of the inner sidewall of the vent hole, inner hole, and bottom hole are all chamfered;

[0012] Through the above technical solutions, chamfering can effectively reduce stress concentration at the edges. Chamfering can make the stress distribution more uniform and avoid excessive local stress at the edges, thereby improving the fatigue life and reliability of the drain plug.

[0013] Furthermore, the flatness of the body and the perpendicularity of the connecting layer are both 2 mils;

[0014] The above technical solution improves the overall oil sealing performance during use.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, by setting the shape of the connecting groove to an internal hexagon, the overall anti-slip effect can be effectively improved. At the same time, by providing a wear-resistant layer of alloy steel on the inner sidewall of the connecting groove, the wear on the whole can be further reduced.

[0017] 2. In this utility model, by providing a connecting layer on the side wall of the main body, the connecting layer made of nickel-based alloy can prevent wear and corrosion caused by long-term use and long-term immersion in oil, thereby improving the service life of the whole.

[0018] 3. In this utility model, the flatness of the main body and the perpendicularity of the connecting layer are both 2 mils, which makes the overall oil sealing performance better during use. Attached Figure Description

[0019] Figure 1 This is an isometric view of a high-precision drain plug proposed in this utility model;

[0020] Figure 2 This is a bottom view of a high-precision drain plug proposed in this utility model;

[0021] Figure 3Another isometric view of a high-precision drain plug proposed in this utility model;

[0022] Figure 4 This is a front sectional view of a high-precision drain plug proposed in this utility model.

[0023] Legend:

[0024] 1. Body; 2. Connecting groove; 3. Vent hole; 4. External thread; 5. Bottom hole; 6. Inner hole; 7. Connecting layer; 8. Wear-resistant layer. Detailed Implementation

[0025] 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.

[0026] Reference Figure 1-4 The present invention provides an embodiment of a high-precision drain plug, comprising a body 1, a connecting groove 2 at the center of the upper end face of the body 1, the connecting groove 2 being hexagonal in shape, a wear-resistant layer 8 on the inner side wall of the connecting groove 2, a bottom hole 5 at the center of the lower end face of the body 1, an inner hole 6 at the center of the upper inner wall of the bottom hole 5, a vent hole 3 at the center of the upper inner wall of the inner hole 6, the upper end of the vent hole 3 penetrating through the upper inner wall of the inner hole 6 and connecting to the lower end face of the connecting groove 2, a connecting layer 7 on the outer side wall of the body 1, and an external thread 4 on the outer side wall of the connecting layer 7.

[0027] The connecting layer 7 is made of nickel-based alloy and is welded to the side wall of the body 1. It has extremely high corrosion resistance and wear resistance, and can remain stable in high-temperature environments, effectively improving the overall service life. The wear-resistant layer 8 is made of alloy steel, which can withstand high loads and wear. The lower center of the inner side wall of the vent hole 3, inner hole 6 and bottom hole 5 are all chamfered. The chamfering can effectively reduce stress concentration at the edges. Through the chamfering, the stress distribution can be more uniform, avoiding excessive local stress at the edges, thereby improving the fatigue life and reliability of the drain plug. The flatness of the body 1 and the perpendicularity of the connecting layer 7 are both 2 microns, which makes the overall oil sealing better during use.

[0028] Working principle: This utility model is a high-precision oil drain plug. By setting the shape of the connecting groove 2 to an internal hexagon, the overall anti-slip effect can be effectively improved. At the same time, by setting an alloy steel wear-resistant layer 8 on the inner side wall of the connecting groove 2, the wear of the whole can be further reduced. Meanwhile, by setting a connecting layer 7 on the side wall of the body 1, the nickel-based alloy connecting layer 7 can prevent wear and corrosion caused by long-term use and long-term immersion in oil, thus improving the service life of the whole.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision oil drain plug comprising a body (1), characterized in that: The upper end face of the body (1) is provided with a connecting groove (2) in the center, the inner side wall of the connecting groove (2) is provided with a wear-resistant layer (8), the lower end face of the body (1) is provided with a bottom hole (5) in the center, the upper inner wall of the bottom hole (5) is provided with an inner hole (6) in the center, the upper inner wall of the inner hole (6) is provided with a vent hole (3) in the center, the upper end of the vent hole (3) penetrates the upper inner wall of the inner hole (6) and reaches the lower end face of the connecting groove (2), the outer side wall of the body (1) is provided with a connecting layer (7), and the outer side wall of the connecting layer (7) is provided with an external thread (4).

2. A high-precision oil drain plug according to claim 1, characterized in that: The material of the connecting layer (7) is nickel-based alloy, and the connecting layer (7) and the side wall of the body (1) are connected by welding.

3. The high-precision oil drain plug of claim 1, wherein: The material of the wear-resistant layer (8) is alloy steel.

4. The high-precision oil drain plug of claim 1, wherein: The inner side wall center of the vent hole (3), the inner hole (6) and the bottom hole (5) is chamfered at the lower end.

5. The high-precision oil drain plug of claim 1, wherein: The flatness of the body (1) and the perpendicularity of the connecting layer (7) are both 2 wires.

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