Oil drainage funnel for discharging and collecting dead oil of aircraft fuel tank
By designing an oil drain funnel and using an oil drain rod and a flexible sealing cup to surround the aircraft's exhaust port, the problem of splashing during the discharge of dead fuel from the fuel tank was solved, achieving safe and efficient oil collection.
Patent Information
- Application Number
- CN202423059131.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-11
AI Technical Summary
In the existing technology, the operation of draining dead fuel from aircraft fuel tanks can easily lead to fuel splashing, polluting the environment and posing safety hazards.
Design an oil drain funnel comprising an oil drain rod, a handle tube, an oil passage cup, and a flexible sealing cup. The flexible sealing cup surrounds the aircraft exhaust port, ensuring that the oil flows into the sealing cup and then into a collection container through the handle tube, thus preventing splashing.
The dead oil in the fuel tank can be discharged quickly, conveniently and safely, avoiding environmental pollution and safety hazards caused by oil splashing.
Smart Images
Figure CN223467329U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an aircraft maintenance device technical field, concretely is a drain funnel for aircraft fuel tank dead oil discharge collection. BACKGROUND
[0002] The dead oil discharge of aircraft fuel tank is one of the technical requirements of the aircraft power fuel system, and the discharge port cover is generally located at the lower part of the fuselage or the lower wing surface of the wing. The conventional method is that one operator uses a long-handled screwdriver to align the discharge port cover lock, and applies an axial force to push the lock open. The dead oil in the fuel tank flows out under the action of gravity, and another operator collects it with a container. This operation method may splash oil to the body of the personnel and the ground if not careful, polluting the environment and posing a safety hazard of fire burning. SUMMARY
[0003] Therefore, the utility model provides a drain funnel for aircraft fuel tank dead oil discharge collection, which comprises an oil drain rod, a handle pipe, an oil passing cup and a flexible sealing cup.
[0004] The upper end of the flexible sealing cup is a sealing opening, and the lower end of the flexible sealing cup is a connecting opening.
[0005] A flange ring is fixedly arranged at the top of the handle pipe, and an installation hole is arranged in the middle of the flange ring.
[0006] The oil drain rod is fixed in the handle pipe, the upper end of the oil drain rod is provided with an oil drain top head, and the oil drain top head is located in the flexible sealing cup.
[0007] The oil passing cup is located in the flexible sealing cup, the oil passing cup is tightly connected in the installation hole, and the outer wall of the oil passing cup tightly presses the edge of the connecting opening of the flexible sealing cup, so that the edge of the connecting opening of the flexible sealing cup is clamped between the oil passing cup and the flange ring; the flange ring is further provided with an oil passing hole.
[0008] Further, the flexible sealing cup is a drum-shaped rotary body structure, and the flexible sealing cup is made of rubber.
[0009] Further, the sealing opening and the connecting opening of the flexible sealing cup are coaxially arranged.
[0010] Further, the outer wall of the oil passing cup is a conical surface or an arc surface structure which is wide at the top and narrow at the bottom, the oil passing cup is provided with a tension hole, the oil drain rod is provided with a pressing convex ring, the oil drain rod passes through the tension hole, the lower end of the oil drain rod is connected with the handle pipe, and the pressing convex ring tightly presses the tension hole.
[0011] Further, the bottom fixing plate of the oil drain rod lower end is provided with a connecting threaded hole, the oil drain rod lower end is threadedly connected in the connecting threaded hole, and the bottom fixing plate presses the handle pipe lower end.
[0012] Further, the handle pipe is a round sleeve pipe, and the handle pipe is coaxially arranged with the oil drain rod.
[0013] Further, the bottom fixing plate is a rectangular plate, the length of the bottom fixing plate is greater than the diameter of the round sleeve pipe, and the width of the bottom fixing plate is less than the diameter of the round sleeve pipe.
[0014] Further, the number of the oil passing holes is multiple, and the oil passing holes are arranged around the tensioning hole.
[0015] Further, the handle pipe bottom is further connected with a flow guide hose, and the flow guide hose is connected with a collecting container.
[0016] Further, the flange ring is welded on the handle pipe upper end.
[0017] The oil drain funnel has the beneficial effects that: the oil drain funnel comprises an oil drain rod, a handle pipe, an oil passing cup and a flexible sealing cup; the flexible sealing cup is open at upper and lower ends; the handle pipe top is fixedly provided with a flange ring, the flange ring is provided with a mounting hole in the middle, the oil drain rod is fixed in the handle pipe, the oil drain rod upper end is provided with an oil drain top head, the oil passing cup is located in the flexible sealing cup, and the oil passing cup is tightly connected in the mounting hole, so as to clamp the lower end opening of the flexible sealing cup. The staff holds the handle pipe, aligns the oil drain top head of the oil drain rod with the aircraft discharge port cover lock, pushes away the lock by applying axial force, can make the oil in the aircraft fuel tank leak out, at this time, the upper end of the flexible sealing cup surrounds the aircraft discharge port, ensures that the oil flows into the flexible sealing cup, and flows along the handle pipe, and the oil collection is facilitated. The oil drain funnel can quickly, conveniently and safely drain the dead oil in the fuel tank to the designated collecting container, avoids that the oil in the aircraft splashes on the body and the ground of the staff, and causes the pollution of the environment and the safety hidden danger of fire combustion. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 is a part dispersion diagram of the oil drain funnel for aircraft fuel tank dead oil discharge collection.
[0019] Fig. 2 is a sectional view of the oil drain funnel for aircraft fuel tank dead oil discharge collection.
[0020] In the above figure: 1 - oil drain rod, 11 - oil drain top head, 12 - compression protruding ring, 2 - handle tube, 3 - flange ring, 4 - oil passing cup, 41 - tensioning hole, 42 - oil passing hole, 5 - flexible sealing cup, 6 - bottom fixing plate. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model embodiment will be further described below with reference to the drawings.
[0022] Please refer to Figs. 1-2 The utility model discloses a kind of oil drain funnel for the dead oil discharge collection of aircraft fuel tank, including oil drain rod 1, handle tube 2, oil passing cup 4 and flexible sealing cup.
[0023] The oil drain rod 1 is elongated bar, the oil drain rod 1 upper end is equipped with oil drain top head 11, oil drain top head 11 is a character flat head shape, the oil drain top head 11 is used to cooperate with the discharge port cover lock catch of aircraft fuel tank, to open the discharge port cover lock catch of aircraft 2 fuel tank, so that the oil in aircraft fuel tank flows out.
[0024] The handle tube is hollow tube body, the handle tube 2 top is fixed with flange ring 3, and the middle of flange ring 3 is equipped with mounting hole;Handle tube 2 bottom is also connected with flow guide hose, and the flow guide hose is connected with collection container.
[0025] The flexible sealing cup is drum-shaped rotary body structure, and the upper and lower ends of the flexible sealing cup are open.In the embodiment, the flexible sealing cup is made of rubber;The upper end of the flexible sealing cup is a sealed port, and the lower end of the flexible sealing cup is a connecting port.
[0026] The oil drain rod 1 is fixed in the handle tube 2, and the oil drain top head 11 is located in the flexible sealing cup.
[0027] The oil passing cup 4 is located in the flexible sealing cup, and the oil passing cup 4 is tightly connected in the mounting hole, and the outer wall of the oil passing cup 4 tightly presses the connecting port edge of the flexible sealing cup, so that the connecting port edge of the flexible sealing cup is clamped between the oil passing cup 4 and the flange ring 3;The flange ring 3 is also provided with an oil passing hole 42.
[0028] When the oil drain funnel is used, the staff holds the handle tube 2, aligns the oil drain top head 11 of the oil drain rod 1 with the discharge port cover lock catch of the aircraft fuel tank, applies axial force to push the lock catch away, so that the oil in the aircraft fuel tank leaks out.At this time, the upper end of the flexible sealing cup 5 surrounds the discharge port of the aircraft, ensures that all the oil flows into the flexible sealing cup 5, and flows along the handle tube 2, and flows into the collection container through the flow guide hose;The oil drain funnel can quickly, conveniently and safely discharge the dead oil in the fuel tank to the designated collection container, avoiding the safety hazards of environmental pollution and fire burning caused by the oil in the aircraft splashing on the staff's body and the ground.
[0029] In the preferred embodiment, the sealing port and the connecting port of the flexible sealing cup 5 are coaxially arranged and aligned with each other.
[0030] In the preferred embodiment, the outer wall of the oil passing cup 4 is in the structure of a conical frustum or an arc surface, the oil passing cup 4 is internally provided with a tension hole 41, the oil discharging rod 1 is provided with a pressing convex ring 12, the oil discharging rod passes through the tension hole 41, the oil discharging rod 1 is connected with the lower end of the handle pipe 2, and the pressing convex ring 12 presses the tension hole 41.
[0031] In the preferred embodiment, the oil discharging rod 1 is fixedly connected with a bottom fixing plate 6 at the lower end, the bottom fixing plate 6 is provided with a connecting threaded hole, the oil discharging rod 1 is screwed into the connecting threaded hole, the bottom fixing plate 6 presses the lower end of the handle pipe 2, and the bottom fixing plate 6 can be pulled downward to tighten the oil discharging rod 1, so that the pressing convex ring 12 on the oil discharging rod 1 presses the edge of the tension hole 41, and the oil discharging rod 1 is fixed in the handle pipe.
[0032] In the preferred embodiment, the handle pipe 2 is a round sleeve pipe, the handle pipe 2 is coaxially arranged with the oil discharging rod 1, the bottom fixing plate 6 is a rectangular plate, the length of the bottom fixing plate 6 is greater than the diameter of the handle pipe 2, and the width of the bottom fixing plate 6 is less than the diameter of the handle pipe 2. In this way, the lower end of the handle pipe 2 is not closed by the bottom fixing plate 6, and oil can flow into the collecting container from the lower end of the handle pipe 2 through the flow guide hose.
[0033] In the preferred embodiment, the number of the oil passing holes 42 is multiple, the oil passing holes 42 are arranged around the tension hole 41, and the oil passing holes 42 enable the oil in the aircraft fuel tank to flow into the handle pipe 2 through the oil passing cup 4.
[0034] In the preferred embodiment, the flange ring 3 is welded to the upper end of the handle pipe 2 to ensure firm connection.
[0035] In this document, the front, back, upper, lower and other orientation words are defined according to the positions of the parts in the drawings and the positions of the parts relative to each other, only for the purpose of expressing the technical scheme clearly and conveniently. It should be understood that the use of the orientation words should not limit the scope of the application.
[0036] In the case of no conflict, the above-mentioned embodiments and features in the embodiments can be combined with each other.
[0037] The above-mentioned is only the preferred embodiment of the present application, and does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A drain funnel for aircraft fuel tank dead leg drain collection, characterized in that, The oil drain rod, the handle pipe, the oil passing cup and the flexible sealing cup are included. The upper end of the flexible sealing cup is a sealing opening, and the lower end of the flexible sealing cup is a connecting opening. The handle pipe is provided with a flange ring at the top, and the flange ring is provided with an installation hole at the middle. The oil drain rod is fixed in the handle pipe, and the upper end of the oil drain rod is provided with an oil drain top head. The oil passing cup is located in the flexible sealing cup, and the oil passing cup is tightly connected in the installation hole.
2. A drain funnel for dead leg fuel tank drain collection for an aircraft, according to claim 1, wherein, The flexible sealing cup is a drum-shaped rotary body structure, and the flexible sealing cup is made of rubber.
3. A drain funnel for dead leg fuel tank drain collection for an aircraft, according to claim 1, wherein, The sealing opening and the connecting opening of the flexible sealing cup are coaxially arranged.
4. A drain funnel for dead leg fuel tank drain collection for an aircraft, according to claim 1, wherein, The outer wall of the oil passing cup is a conical or arc-shaped surface structure, the oil passing cup is provided with a tension hole, the oil drain rod is provided with a pressing convex ring, the oil drain rod passes through the tension hole, the lower end of the oil drain rod is connected with the handle pipe, and the pressing convex ring tightly presses the tension hole.
5. A drain funnel for dead leg fuel tank drain collection for an aircraft, according to claim 4, wherein, The lower end of the oil drain rod is provided with a bottom fixed plate, the bottom fixed plate is provided with a connecting threaded hole, the lower end of the oil drain rod is screwed in the connecting threaded hole, and the bottom fixed plate tightly presses the lower end of the handle pipe.
6. A drain funnel for dead leg fuel tank drain collection for an aircraft, according to claim 5, wherein, The handle pipe is a round sleeve pipe, and the handle pipe is coaxially arranged with the oil drain rod.
7. A drain funnel for dead leg fuel tank drain collection for an aircraft, according to claim 6, wherein, The bottom fixed plate is a rectangular plate, the length of the bottom fixed plate is greater than the diameter of the round sleeve pipe, and the width of the bottom fixed plate is less than the diameter of the round sleeve pipe.
8. A drain funnel for dead leg fuel tank drain collection for an aircraft, according to claim 6, wherein, The number of the oil passing holes is multiple, and the oil passing holes are arranged around the tension hole.
9. A drain funnel for dead leg fuel tank drain collection for an aircraft, according to claim 1, wherein, The bottom of the handle pipe is further connected with a flow guide hose, and the flow guide hose is connected with a collecting container.
10. A drain funnel for dead leg fuel tank drain collection for an aircraft as defined in claim 1 wherein, The flange ring is welded on the upper end of the handle pipe.