Efficient oil drain tool for aircraft

Abstract

This utility model relates to the field of aircraft maintenance equipment technology and discloses an efficient oil pan drainage tool for aircraft. The tool includes a drainage pipe, a suction power source at the right end of the drainage pipe, and a connecting pipe fixedly connected to the left side of the suction power source. The connecting pipe is slidably connected to the drainage pipe. A connector is located on the right side of the outer wall of the suction power source. Multiple sealing grooves are equidistantly formed on the left side of the outer wall of the connector. Multiple sealing rings are fixedly connected to the inner walls of each of the sealing grooves, and the outer walls of each sealing ring are abutted against the right side of the inner wall of the suction power source. In this utility model, the suction power source generates suction, which, in conjunction with the channel formed by the slidable connection of the connecting pipe and the drainage pipe, actively draws oil from the oil pan into the connecting pipe through the connector, achieving efficient oil drainage and improving upon the low efficiency of existing technologies that rely solely on gravity for oil drainage.

Description

Technical Field

[0001] This utility model relates to the field of aircraft maintenance equipment technology, and in particular to an efficient aircraft oil pan drainage tool. Background Technology

[0002] In the maintenance of Boeing 737NG series aircraft, when performing certain work items, such as aircraft weighing and structural fuel tank repair, a thorough bottom drain operation is required for the fuel tank. This operation requires specialized bottom drain tools.

[0003] Currently, the standard tool recommended by Boeing mainly consists of a drain pipe and a connector. In use, the connector is connected to the drain port of the fuel tank, allowing the fuel in the tank to flow out through the drain pipe under gravity. However, in actual use, due to the large amount of fuel remaining in the tank, relying solely on gravity to drain the fuel results in a slow drainage rate and consumes a significant amount of time, reducing the practicality of the device. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an efficient fuel drain tool for aircraft, which aims to improve the problem of low fuel draining efficiency in the existing technology that relies solely on gravity.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an efficient aircraft oil drain tool, including a drain pipe, a suction power source is provided at the right end of the drain pipe, a connecting pipe is fixedly connected to the left side of the suction power source, the connecting pipe is slidably connected to the drain pipe, and a connector is provided on the right side of the outer wall of the suction power source.

[0006] As a further description of the above technical solution: Multiple sealing grooves are equidistantly provided on the left side of the outer wall of the connector. Multiple sealing rings are fixedly connected to the inner walls of the multiple sealing grooves. The outer walls of the multiple sealing rings are all in contact with the right side of the inner wall of the suction power source.

[0007] As a further description of the above technical solution: A threaded groove is provided on the right side of the outer wall of the connector, and a hexagonal column is fixedly connected to the outer wall of the connector.

[0008] As a further description of the above technical solution: multiple connection holes are provided on the right side of the outer wall of the connector, and the multiple connection holes are arranged in a ring array with the center of the connector as the center.

[0009] As a further description of the above technical solution: a connecting pipe is connected to the top left side of the discharge pipe, and a flow meter is fixedly connected to the top of the connecting pipe.

[0010] This utility model has the following beneficial effects: In this invention, an oil flow channel is established by connecting the connector to the oil outlet of the 737NG aircraft's oil pan. When the suction power source is activated, it generates suction, which, in conjunction with the channel formed by the sliding connection of the connecting pipe and the discharge pipe, actively draws the oil from the oil pan through the connector into the connecting pipe, and then discharges it through the discharge pipe. This structural design achieves highly efficient oil drainage, overcoming the problem of low efficiency in existing technologies that rely solely on gravity for oil drainage. It significantly improves the efficiency of oil pan drainage, ensuring that aircraft oil pan drainage can be completed efficiently and smoothly, thus enhancing aircraft maintenance efficiency. Attached Figure Description

[0011] Figure 1 This is a perspective view of the aircraft high-efficiency oil pan discharge tool proposed in this utility model; Figure 2 This is a front view of the aircraft high-efficiency oil pan discharge tool proposed in this utility model; Figure 3 This is a partial structural exploded view of the aircraft high-efficiency oil pan discharge tool proposed in this utility model; Figure 4 A schematic diagram of the sealing ring for the high-efficiency oil drain tool for aircraft proposed in this utility model; Figure 5 This is a top view of the aircraft high-efficiency oil drain tool proposed in this utility model.

[0012] Legend: 1. Discharge pipe; 2. Suction power source; 3. Connecting pipe; 4. Connector; 5. Sealing groove; 6. Sealing ring; 7. Threaded groove; 8. Hexagonal column; 9. Connecting hole; 10. Connecting column; 11. Flow meter. Detailed Implementation

[0013] 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.

[0014] Reference Figure 1 , Figure 4 and Figure 5This utility model provides an embodiment of an efficient aircraft oil sump draining tool 737NG, comprising a drain pipe 1, which serves as the main channel for oil discharge. Its function is to guide the oil extracted from the aircraft oil sump to a designated collection location, ensuring a smooth oil discharge path. A suction power source 2 is located at the right end of the drain pipe 1, providing the necessary suction for the entire oil sump draining process. This suction overcomes the gravity of the oil and the resistance to flow within the pipe, solving the problem of low efficiency in existing technologies that rely solely on gravity for oil discharge, thus achieving efficient oil sump draining operations. A connecting pipe 3 is fixedly connected to the left side of the suction power source 2, connecting the suction power source 2 and the drain pipe 1. This allows the suction generated by the suction power source 2 to be transmitted to the drain pipe 1 and provides a channel for the oil to flow from the suction power source 2 to the drain pipe 1. The connecting pipe 3 is slidably connected to the drain pipe 1. A connector 4 is located on the right side of the outer wall of the suction power source 2.

[0015] Specifically, the discharge pipe 1 serves as the channel for oil discharge, responsible for transporting the oil to the designated location. The suction power source 2 is located at the right end of the discharge pipe 1, providing suction power for oil discharge and solving the problem of low efficiency in existing technologies that rely solely on gravity for oil discharge. The connecting pipe 3 is fixedly connected to the suction power source 2 on the left and slidably connected to the discharge pipe 1 on the right, transmitting the suction force generated by the suction power source 2 while allowing for flexible position adjustment to facilitate connection between the oil pan and the discharge pipe 1 under different operating conditions. The connector 4 is located on the right side of the outer wall of the suction power source 2 for connection to the 737NG aircraft oil pan, ensuring smooth entry of oil into the discharge system. All components work together to achieve efficient oil pan discharge.

[0016] Reference Figure 1 , Figure 2 and Figure 3 Multiple sealing grooves 5 are equidistantly spaced on the left side of the outer wall of the connector 4. The function of the sealing grooves 5 is to provide installation positions for the sealing rings 6, allowing them to be arranged orderly on the outer wall of the connector 4, thus laying the foundation for a good sealing effect. Multiple sealing rings 6 are fixedly connected to the inner walls of the sealing grooves 5, tightly fitting against the connector 4 through their elastic deformation, filling the gap between the connector 4 and the suction power source 2, preventing oil leakage from the connection. The outer walls of the multiple sealing rings 6 are all fitted against the right side of the inner wall of the suction power source 2.

[0017] Specifically, the sealing groove 5 on the left side of the outer wall of the connector 4 is used to house the sealing rings 6, and multiple sealing rings 6 are fixed to the inner wall of the sealing groove 5. When the connector 4 is connected to the suction power source 2, the outer wall of the sealing rings 6 fits against the right side of the inner wall of the suction power source 2, forming a multi-layer seal, effectively preventing oil leakage and ensuring the sealing performance of the aircraft oil drain tool during operation.

[0018] Reference Figure 1 , Figure 2 and Figure 3 The outer wall of connector 4 has a threaded groove 7 on the right side, which mates with the corresponding threaded structure on the aircraft oil pan. The connector 4 is securely installed on the aircraft oil pan through the threaded connection, ensuring the reliability of the connection during oil pan drainage and preventing oil leakage or tool detachment due to loose connection. The outer wall of connector 4 is fixedly connected with a hexagonal post 8, which allows operators to use wrenches and other tools to rotate connector 4, making it easier to tighten or loosen connector 4 with the aircraft oil pan, improving the efficiency of installation and removal of connector 4, and also helping to accurately control the tightening degree of connector 4.

[0019] Specifically, the threaded groove 7 on the right side of the outer wall of the connector 4 facilitates threaded connection with the aircraft oil pan; the hexagonal post 8 on the outer wall allows the connector 4 to be rotated with tools, enabling quick and stable installation.

[0020] Reference Figure 1 , Figure 2 and Figure 4 Multiple connection holes 9 are provided on the right side of the outer wall of the connector 4. The multiple connection holes 9 are used for quick connection with the oil tank connector. The multiple connection holes 9 are arranged in a ring around the center of the connector 4. Specifically, the multiple connecting holes 9 in the annular array on the right side of the outer wall of the connector 4 engage with the fuel tank connector, and the annular distribution characteristic is used to achieve a stable connection between the connector 4 and the fuel tank.

[0021] Reference Figure 2 , Figure 3 and Figure 4 A connecting post 10 is connected to the top left of the discharge pipe 1 to establish a connection between the flow meter and the discharge pipe 1. A flow meter 11 is fixedly connected to the top of the connecting post 10. Specifically, the oil in the discharge pipe 1 flows in through the connecting column 10, and the flow meter 11 measures the oil passing through the connecting column 10 to know the amount of oil discharged.

[0022] Working Principle: When this high-efficiency oil draining tool for the 737NG aircraft is in operation, connector 4 is first connected to the oil outlet of the 737NG aircraft's oil sump. Previously, oil draining relied solely on gravity, which was inefficient. This tool solves this problem by utilizing a suction power source 2. Once activated, suction power source 2 generates suction, drawing oil from the oil sump through connector 4 into connecting pipe 3 via the sliding connection between connecting pipe 3 and drain pipe 1, and then discharging it through drain pipe 1. By actively suctioning oil with suction power source 2, the efficiency of oil draining is greatly improved, overcoming the slow speed of gravity-based draining and ensuring efficient and smooth completion of the aircraft's oil draining operation.

[0023] 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. An efficient fuel drain tool for aircraft, comprising a drain pipe (1), characterized in that: A suction power source (2) is provided at the right end of the discharge pipe (1), and a connecting pipe (3) is fixedly connected to the left side of the suction power source (2). The connecting pipe (3) is slidably connected to the discharge pipe (1), and a connector (4) is provided on the right side of the outer wall of the suction power source (2).

2. The aircraft high-efficiency oil pan discharge tool according to claim 1, characterized in that: Multiple sealing grooves (5) are equidistantly provided on the left side of the outer wall of the connector (4). Multiple sealing rings (6) are fixedly connected to the inner walls of the multiple sealing grooves (5). The outer walls of the multiple sealing rings (6) are all in contact with the right side of the inner wall of the suction power source (2).

3. The aircraft high-efficiency oil pan discharge tool according to claim 1, characterized in that: The outer wall of the connector (4) is provided with a threaded groove (7), and a hexagonal column (8) is fixedly connected to the outer wall of the connector (4).

4. The aircraft high-efficiency oil pan discharge tool according to claim 1, characterized in that: Multiple connection holes (9) are provided on the right side of the outer wall of the connector (4), and the multiple connection holes (9) are arranged in a ring array with the center of the connector (4) as the center.

5. The aircraft high-efficiency oil pan discharge tool according to claim 1, characterized in that: The top left side of the discharge pipe (1) is connected to a connecting column (10), and a flow meter (11) is fixedly connected to the top of the connecting column (10).

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