Oil suction device for lubricating oil tank of engine

Abstract

The utility model relates to the technical field of aero-engines, in particular to an engine lubricating oil tank oil suction device which comprises an oil suction pipe connector, an oil suction pipe, a spherical steering block, a fixing mechanism and a heavy hammer, the heavy hammer is arranged on the oil suction pipe, the oil suction pipe is arranged on the spherical steering block, and the fixing mechanism is arranged on the spherical steering block. The spherical steering block is rotationally arranged on the oil suction pipe connector through the fixing mechanism, and oil outlet holes are formed in the peripheral side wall of the oil suction pipe connector. The engine has the advantages that the oil suction pipe always makes contact with lubricating oil and sucks the lubricating oil, and the probability of unstable oil flow caused by changes of different postures and acceleration of the engine is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aircraft engines, and in particular to an oil suction device for an engine oil tank. Background Art

[0002] The engine oil tank suction device is a device used to transport the oil in the engine oil tank to the lubrication system. Its main function is to ensure that the engine can get enough oil supply when running, so as to reduce the friction and wear of engine parts and protect the normal operation of the engine.

[0003] The background of the engine oil tank suction device can be traced back to the development history of the internal combustion engine; early internal combustion engines used a relatively simple oil system. The oil tank was usually located on the upper part of the engine and supplied oil to the lubrication system by gravity. However, with the development of the engine and the improvement of its performance, the requirements for oil supply have become increasingly higher.

[0004] A Chinese patent with authorization announcement number CN212535863U discloses an aircraft engine oil tank, including an oil chamber, an oil inlet pipe and an engine oil supply pipe, both of which are arranged on the oil chamber; when the engine is supplied with oil, the lubricating oil flows from the oil chamber into the engine oil supply pipe, and then is injected into the engine through the engine oil supply pipe to lubricate the parts in the engine.

[0005] In the process of realizing this application, the inventor found that there are at least the following problems in this technology: the current oil suction device of the lubricating oil tank of the aircraft engine has technical difficulties in oil suction and unstable oil flow due to the limitations of materials and performance requirements. The traditional engine lubricating oil tank oil suction device generally relies on gravity flow or low-pressure suction to export the lubricating oil. Especially during flight, the engine may face changes in different attitudes and accelerations, which will cause fluctuations in oil flow and affect the stability of oil supply. Utility Model Content

[0006] In order to reduce the fluctuation of the injected oil amount and improve the stability of the oil supply, the present application provides an engine lubricating oil tank oil suction device.

[0007] The present application provides an engine oil tank oil suction device, which adopts the following technical solution:

[0008] An engine oil tank oil suction device comprises an oil suction pipe joint, an oil suction pipe, a spherical steering block, a fixing mechanism and a weight, wherein the weight is arranged on the oil suction pipe, the oil suction pipe is arranged on the spherical steering block, the spherical steering block is rotatably arranged on the oil suction pipe joint through the fixing mechanism, and an oil outlet hole is opened on the peripheral side wall of the oil suction pipe joint.

[0009] By adopting the above technical solution, through the setting of the spherical steering block and the heavy hammer, the oil suction pipe is always in contact with the lubricating oil and sucks in the lubricating oil, which reduces the probability of unstable oil flow caused by changes in different engine postures and accelerations.

[0010] Optionally, the fixing mechanism includes a first fixing ring, a first spherical fixing block, a second spherical fixing block and a locking assembly, the first fixing ring is arranged on the oil suction pipe joint, the first spherical fixing block is arranged on the first fixing ring, the second spherical fixing block is rotatably arranged on the first spherical fixing block, the locking assembly is arranged on the first spherical fixing block and connected to the second spherical fixing block, and the locking assembly is used to lock the second spherical fixing block.

[0011] By adopting the above technical solution, when installing the spherical steering block, the spherical steering block is first placed in the space formed by the first spherical fixing block and the second spherical fixing block, and then the locking assembly locks the first spherical fixing block and the second spherical fixing block, thereby realizing the rotation of the oil suction pipe.

[0012] Optionally, the locking assembly includes a first connecting rod, a second connecting rod, an insert block, a limit block, a slider and a screw rod, the first connecting rod is arranged on the second spherical fixing block, the second connecting rod is arranged on the first spherical fixing block, a groove is provided on the end face of the second connecting rod close to the first connecting rod, a sliding groove is provided on the side wall of the groove, the insert block is inserted in the groove and connected to the first connecting rod, the limit block is arranged on the insert block, the slider is slidably arranged in the sliding groove, and the screw rod is threadedly connected to the second connecting rod and is rotationally connected to the slider.

[0013] By adopting the above technical solution, when locking the first spherical fixing block and the second spherical fixing block, the insert block and the limit block are first inserted into the groove, and then the screw is manually rotated, and the screw drives the slider to slide into the groove, thereby limiting the insert block, thereby realizing the locking of the first spherical fixing block and the second spherical fixing block.

[0014] Optionally, the fixing mechanism further includes a sealing gasket, and the sealing gasket is arranged on an end surface of the first spherical fixing block close to the second spherical fixing block.

[0015] By adopting the above technical solution, the sealing gasket seals the space formed by the first spherical fixing block and the second spherical fixing block, thereby reducing the probability of lubricating oil flowing out from the connection between the first spherical fixing block and the second spherical fixing block.

[0016] Optionally, the fixing mechanism further includes a plurality of balls, and the plurality of balls are rotatably disposed on the inner side walls of the first spherical fixing block and the second spherical fixing block.

[0017] By adopting the above technical solution, the setting of the ball makes the rotation of the spherical steering block more flexible, thereby reducing the probability that the spherical steering block cannot rotate due to excessive friction between the first spherical fixing block and the second spherical fixing block and the spherical steering block.

[0018] Optionally, a connecting groove is provided on the side wall inside the oil suction pipe, and an anti-backflow mechanism is also provided on the oil suction pipe, the anti-backflow mechanism includes a slide plate, a second fixed ring and a spring, the slide plate is slidably arranged in the oil suction pipe, the second fixed ring is arranged in the connecting groove, and the spring is arranged on the second fixed ring and connected to the slide plate.

[0019] By adopting the above technical solution, when the lubricating oil enters the engine through the oil suction pipe, the lubricating oil drives the slide plate to slide, and then enters the oil suction pipe joint through the connecting groove; however, when the lubricating oil in the engine enters the oil suction pipe, due to the setting of the spring and the slide plate, the probability of the lubricating oil in the engine flowing back is reduced.

[0020] Optionally, a filtering mechanism is further provided on the oil suction pipe, and the filtering mechanism includes a filtering pipe, a filtering net and a connecting component. The filtering pipe is arranged on the oil suction pipe through the connecting component, and the filtering net is arranged in the filtering pipe.

[0021] By adopting the above technical solution, the setting of the filter screen reduces the probability of impurities in the lubricating oil entering the engine and affecting the operation of the engine.

[0022] Optionally, a thread is provided on the inner wall of the oil suction pipe, and the connecting assembly includes a spiral tube, a first mounting ring, a second mounting ring and a sealing ring, the spiral tube is threadedly connected in the oil suction pipe and is connected to the filter tube, the first mounting ring is arranged on the filter tube, the second mounting ring is arranged on the oil suction pipe, and the sealing ring is arranged on the first mounting ring.

[0023] By adopting the above technical solution, the setting of the spiral tube realizes the detachable connection of the filter tube, thereby facilitating the replacement of a clogged filter tube. At the same time, the setting of the sealing ring reduces the probability of lubricating oil overflowing from the connection between the spiral tube and the oil suction pipe.

[0024] In summary, this application includes the following beneficial technical effects:

[0025] 1. By setting the spherical steering block and the heavy hammer, the oil suction pipe always contacts and sucks the lubricating oil, which reduces the probability of unstable oil flow caused by the changes in different engine postures and accelerations;

[0026] 2. The setting of the ball makes the rotation of the spherical steering block more flexible, thereby reducing the probability that the spherical steering block cannot rotate due to excessive friction between the first spherical fixing block and the second spherical fixing block and the spherical steering block;

[0027] 3. The setting of the filter reduces the probability of impurities in the lubricating oil entering the engine and affecting engine operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the oil suction device of the engine oil tank in Example 1 of the present application;

[0029] Figure 2 This is a schematic diagram of the structure of the fixing mechanism in Example 1 of the present application;

[0030] Figure 3 is a cross-sectional view of the locking assembly in Example 1 of the present application;

[0031] Figure 4 It is a cross-sectional view of the oil suction device of the engine oil tank in Example 2 of the present application;

[0032] Figure 5 For this application Figure 4 A magnified view of part A;

[0033] Figure 6 For this application Figure 4 Magnified view of part B.

[0034] Reference numerals: 100, oil suction pipe joint; 110, oil outlet hole; 200, oil suction pipe; 210, connecting groove; 300, spherical steering block; 400, fixing mechanism; 410, first fixing ring; 420, first spherical fixing block; 430, second spherical fixing block; 440, locking assembly; 441, first connecting rod; 442, second connecting rod; 4421, groove; 4422, slide groove; 443, plug block; 4 44. Limit block; 445. Sliding block; 446. Screw; 450. Ball; 460. Sealing gasket; 500. Weight; 600. Anti-backflow mechanism; 610. Slide plate; 620. Second fixing ring; 630. Spring; 700. Filter mechanism; 710. Filter tube; 720. Filter net; 730. Connecting assembly; 731. Screw; 732. First mounting ring; 733. Second mounting ring; 734. Sealing ring. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-Figure 6 This application is described in further detail.

[0036] The embodiment of the present application discloses an oil suction device for an engine oil tank.

[0037] Embodiment 1:

[0038] refer to Figure 1 The oil suction device of the engine lubricating oil box includes an oil suction pipe joint 100, four penetrating oil outlet holes 110 are opened on the side wall inside the oil suction pipe joint 100, and an oil suction pipe 200 for sucking lubricating oil is also provided on the oil suction pipe joint 100, and a weight 500 is fixedly connected to the end of the oil suction pipe 200 away from the oil suction pipe joint 100, and a spherical steering block 300 is fixedly connected to the side wall of the oil suction pipe 200, and a fixing mechanism 400 is also provided on the oil suction pipe joint 100, and the spherical steering block 300 is rotatably set on the oil suction pipe joint 100 through the fixing mechanism 400; when lubricating the engine, when the engine faces different postures, the weight 500 cooperates with the spherical steering block 300 to drive the oil suction pipe 200 to swing in the direction of gravity, so that the oil suction pipe 200 can always contact and suck lubricating oil, reducing the probability of unstable oil flow due to the engine facing different postures and acceleration changes.

[0039] refer to Figure 2 and Figure 3 The fixing mechanism 400 includes a first fixing ring 410, which is fixedly connected to the end face of the oil suction pipe joint 100 close to the oil suction pipe 200, and a first spherical fixing block 420 is fixedly connected to the end face of the first fixing ring 410 away from the oil suction pipe joint 100, and a second spherical fixing block 430 is rotatably connected to the first spherical fixing block 420, and a sealing gasket 460 is fixedly connected to the end face of the first spherical fixing block 420 close to the second spherical fixing block 430, and a plurality of balls 450 are rotatably connected to the side walls inside the first spherical fixing block 420 and the second spherical fixing block 430; the fixing mechanism 400 also includes a locking assembly 440, and the locking assembly 440 includes a first connecting rod 441, and the first connecting rod 441 is fixedly connected to the outer wall of the second spherical fixing block 430. And it is located at the end of the second spherical fixing block 430 away from the rotating end, and the second connecting rod 442 is fixedly connected to the outer side wall of the first spherical fixing block 420 away from the rotating end, a groove 4421 is provided on the side wall of the second connecting rod 442 close to the first connecting rod 441, and a sliding groove 4422 is provided on the side wall of the groove 4421 away from the first fixing ring 410, an insert block 443 is inserted in the groove 4421, the insert block 443 is fixedly connected to the first connecting rod 441, a limiting block 444 is fixedly connected to the end surface of the insert block 443 away from the first fixing ring 410, a sliding block 445 is slidably connected in the sliding groove 4422, a screw 446 is threadedly connected to the end surface of the second connecting rod 442 away from the first fixing ring 410, and the screw 446 passes through the second connecting rod 442 and is rotatably connected to the sliding block 445.

[0040] When the spherical steering block 300 is fixed, the spherical steering block 300 is first placed in the space formed by the first spherical fixing block 420 and the second spherical fixing block 430, and then the second spherical fixing block 430 is rotated, and the second spherical fixing block 430 drives the plug block 443 to be inserted into the groove 4421, and then the screw rod 446 is manually rotated, and the screw rod 446 drives the slider 445 to slide into the groove 4421, and the slider 445 and the limit block 444 cooperate with each other to limit the plug block 443, thereby fixing the second spherical fixing block 43 0 for limiting; at the same time, the setting of the ball 450 makes the rotation of the spherical steering block 300 more flexible, thereby reducing the probability that the spherical steering block 300 cannot rotate due to excessive friction between the first spherical fixing block 420 and the second spherical fixing block 430 and the spherical steering block 300; the setting of the sealing gasket 460 seals the space formed by the first spherical fixing block 420 and the second spherical fixing block 430, thereby reducing the probability of lubricating oil flowing out from the connection between the first spherical fixing block 420 and the second spherical fixing block 430.

[0041] The implementation principle of Example 1 of the present application is: when sucking oil, as the center of gravity of the engine and the lubricating oil tank continues to change, the weight 500 drives the oil suction pipe 200 to rotate through the spherical steering block 300 as the center of gravity changes, thereby ensuring that the oil suction pipe 200 can always suck oil.

[0042] Embodiment 2:

[0043] refer to Figure 4 and Figure 5 The difference between the embodiment of the present application and embodiment 1 is that a connecting groove 210 is opened on the side wall inside the oil suction pipe 200, and an anti-backflow mechanism 600 is also provided on the oil suction pipe 200. The anti-backflow mechanism 600 includes a second fixing ring 620, and the second fixing ring 620 is fixedly connected to the side wall of the connecting groove 210 close to the oil suction pipe joint 100. A spring 630 is fixedly connected to the end surface of the second fixing ring 620 away from the oil suction pipe joint 100. A slide plate 610 is also slidably connected in the oil suction pipe 200, and one end of the slide plate 610 close to the second fixing ring 620 is fixedly connected to the spring 630; the arrangement of the slide plate 610 and the spring 630 realizes that the oil can only enter the oil suction pipe joint 100 from the oil suction pipe 200, but cannot enter the oil suction pipe 200 from the oil suction pipe joint 100, thereby reducing the probability of backflow of the lubricating fluid.

[0044] refer to Figure 6A thread is provided on the inner side wall of the oil suction pipe 200 away from the oil suction pipe joint 100, and a filter tube 710 is also provided on the oil suction pipe 200. The filter tube 710 is provided at one end of the oil suction pipe 200 away from the oil suction pipe joint 100, and a filter screen 720 is fixedly connected to the side wall inside the filter tube 710; the filtering mechanism 700 also includes a connecting component 730, and the connecting component 730 includes a spiral tube 731, and the spiral tube 731 is threadedly connected to the oil suction pipe 200 through a thread provided on the inner side wall of the oil suction pipe 200, a first mounting ring 732 is fixedly connected to the side wall of the filter tube 710, a second mounting ring 733 is fixedly connected to the side wall of the oil suction pipe 200, and a sealing ring 734 is fixedly connected to the end face of the first mounting ring 732 close to the second mounting ring 733.

[0045] The setting of the filter screen 720 reduces the probability of impurities in the lubricating oil entering the engine and affecting the engine operation; the setting of the spiral tube 731 realizes the detachable connection of the filter tube 710, thereby facilitating the replacement of the clogged filter tube 710. At the same time, the setting of the sealing ring 734 reduces the probability of the lubricating oil overflowing from the connection between the spiral tube 731 and the oil suction pipe 200.

[0046] The implementation principle of Example 2 of the present application is as follows: when lubricating the engine, the lubricating oil enters the oil suction pipe 200 after being filtered through the filter mesh 720 in the filter tube 710, and then the oil pushes the slide plate 610 to slide, thereby allowing the oil to flow into the oil suction pipe joint 100 through the connecting groove 210; at the same time, the setting of the spring 630 and the slide plate 610 reduces the probability of oil backflow.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An oil suction device for an engine oil tank, comprising an oil suction pipe joint (100) and an oil suction pipe (200), characterized in that: It also comprises a spherical steering block (300), a fixing mechanism (400) and a weight (500), wherein the weight (500) is arranged on the oil suction pipe (200), the oil suction pipe (200) is arranged on the spherical steering block (300), the spherical steering block (300) is rotatably arranged on the oil suction pipe joint (100) through the fixing mechanism (400), and an oil outlet hole (110) is provided on the peripheral side wall of the oil suction pipe joint (100).

2. The engine oil tank oil suction device according to claim 1, characterized in that: The fixing mechanism (400) comprises a first fixing ring (410), a first spherical fixing block (420), a second spherical fixing block (430) and a locking assembly (440); the first fixing ring (410) is arranged on the oil suction pipe joint (100); the first spherical fixing block (420) is arranged on the first fixing ring (410); the second spherical fixing block (430) is rotatably arranged on the first spherical fixing block (420); the locking assembly (440) is arranged on the first spherical fixing block (420) and is connected to the second spherical fixing block (430); and the locking assembly (440) is used to lock the second spherical fixing block (430).

3. The engine oil tank oil suction device according to claim 2, characterized in that: The locking assembly (440) comprises a first connecting rod (441), a second connecting rod (442), an insert block (443), a limit block (444), a slider (445) and a screw rod (446); the first connecting rod (441) is arranged on the second spherical fixing block (430); the second connecting rod (442) is arranged on the first spherical fixing block (420); and a groove is provided on the end surface of the second connecting rod (442) close to the first connecting rod (441). (4421), a slide groove (4422) is provided on the side wall of the groove (4421), the insert block (443) is inserted into the groove (4421) and connected to the first connecting rod (441), the limit block (444) is arranged on the insert block (443), the slider (445) is slidably arranged in the slide groove (4422), and the screw rod (446) is threadedly connected to the second connecting rod (442) and is rotationally connected to the slider (445).

4. The engine oil tank oil suction device according to claim 2, characterized in that: The fixing mechanism (400) further comprises a sealing gasket (460), wherein the sealing gasket (460) is arranged on an end surface of the first spherical fixing block (420) close to the second spherical fixing block (430).

5. The engine oil tank oil suction device according to claim 2, characterized in that: The fixing mechanism (400) further comprises a plurality of rolling balls (450), and the plurality of rolling balls (450) are all rotatably arranged on the inner side walls of the first spherical fixing block (420) and the second spherical fixing block (430).

6. The engine oil tank oil suction device according to claim 1, characterized in that: A connecting groove (210) is provided on the inner side wall of the oil suction pipe (200). The oil suction pipe (200) is also provided with an anti-backflow mechanism (600). The anti-backflow mechanism (600) comprises a slide plate (610), a second fixing ring (620) and a spring (630). The slide plate (610) is slidably arranged in the oil suction pipe (200), the second fixing ring (620) is arranged in the connecting groove (210), and the spring (630) is arranged on the second fixing ring (620) and connected to the slide plate (610).

7. The engine oil tank oil suction device according to claim 1, characterized in that: The oil suction pipe (200) is also provided with a filtering mechanism (700), the filtering mechanism (700) comprising a filtering pipe (710), a filtering net (720) and a connecting assembly (730), the filtering pipe (710) being arranged on the oil suction pipe (200) via the connecting assembly (730), and the filtering net (720) being arranged in the filtering pipe (710).

8. The engine oil tank oil suction device according to claim 7, characterized in that: The inner wall of the oil suction pipe (200) is provided with a thread. The connection assembly (730) comprises a screw tube (731), a first mounting ring (732), a second mounting ring (733) and a sealing ring (734). The screw tube (731) is threadedly connected in the oil suction pipe (200) and is connected to the filter pipe (710). The first mounting ring (732) is arranged on the filter pipe (710). The second mounting ring (733) is arranged on the oil suction pipe (200). The sealing ring (734) is arranged on the first mounting ring (732).

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