Recycling device for oil rail pressure testing machine

Abstract

The utility model discloses a recovery device for an oil rail pressure testing machine, which comprises a recovery cover, an oil leakage pipe, a filter screen, an electric heating wire and an oil receiving tank, an inlet of the oil leakage pipe is connected to the bottom of the recovery cover; the filter screen is mounted at an inlet of the oil leakage pipe; the electric heating wire is mounted in the filter screen; the engine oil recovery device has the advantages that engine oil is guided to the oil leakage pipe through the inner wall of the recovery cover and then flows into the oil receiving tank, a complete recovery path is formed, cleaning frequency is reduced, and cost is saved.

Description

A recovery device for an oil rail pressure testing machine Technical Field

[0001] This utility model relates to the field of oil rails, specifically to a recovery device for an oil rail pressure testing machine. Background Technology

[0002] In modern automotive engine fuel injection systems, the fuel rail, as a key component for storing and distributing fuel, directly affects engine power output, fuel economy, and exhaust emissions due to the stability and accuracy of its internal pressure. As engine technology advances towards high-pressure common rail and direct injection, the working pressure of the fuel rail is continuously increasing, placing higher demands on the accuracy, reliability, and efficiency of fuel rail pressure testing.

[0003] Chinese utility model patent CN218493707U discloses a high-pressure oil rail clamping and sealing test device, including a test platform, a first power mechanism, and a second power mechanism. The test platform is used to place the test workpiece, which has an oil outlet hole and an oil return hole. The first power mechanism is installed above the oil outlet hole, and its output end is connected to the oil outlet hole plug to enable the oil outlet hole plug to move longitudinally. The second power mechanism is installed above the oil return hole, and its output end is connected to the oil return hole plug to enable the oil return hole plug to move longitudinally.

[0004] The aforementioned technologies have the following drawbacks: during oil rail pressure testing, if the oil rail seal is poor, the oil inside the oil rail will splash onto the test bench, making it difficult to clean. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a recovery device for an oil rail pressure testing machine, which solves the technical problem that oil in the oil rail splashes everywhere and is difficult to recover in the prior art.

[0006] To achieve the above technical objectives, the present invention provides a recovery device for an oil rail pressure testing machine, including a recovery cover, which is sleeved on the outside of the testing platform;

[0007] An oil leak pipe, the inlet of which is connected to the bottom of the recovery hood;

[0008] A filter screen is installed at the inlet of the oil leak pipe;

[0009] Heating wire, said heating wire being installed inside a filter screen; and,

[0010] An oil receiving tank is located below the recovery hood, and the outlet of the oil leakage pipe is connected to the inlet of the oil receiving tank.

[0011] In some embodiments, the recycling hood includes a housing and a base plate, the base plate being detachably connected to the bottom of the housing.

[0012] In some embodiments, the recycling hood further includes a fixing assembly comprising a screw and a nut. The screw is connected to the bottom of the housing, and the base plate has a through hole for the screw to pass through. The nut is threaded onto the screw and abuts against the bottom of the base plate.

[0013] In some embodiments, the recycling hood further includes a handle attached to a nut.

[0014] In some embodiments, the recycling hood further includes an anti-loosening component, which includes an anti-loosening gear and an anti-loosening tooth block. The anti-loosening gear is sleeved on the nut, and the base plate is provided with a slot. The anti-loosening tooth block is engaged in the slot, and the anti-loosening tooth block meshes with the anti-loosening gear.

[0015] In some embodiments, the recycling hood further includes a sealing assembly comprising a convex elastic strip and a concave elastic strip, the convex elastic strip being connected to the bottom of the hood and the concave elastic strip being connected to the top of the base plate, wherein when the base plate is connected to the hood, the convex elastic strip is embedded within the concave elastic strip.

[0016] In some embodiments, the base plate gradually decreases from the periphery to the center, and the inlet of the oil drain pipe is connected to the center of the base plate.

[0017] In some embodiments, the recovery device further includes a valve mounted on the leaking oil pipe.

[0018] In some embodiments, the oil receiving tank includes an oil storage tank and an oil inlet pipe. The oil inlet pipe is connected to the oil storage tank, and the outlet of the oil inlet pipe is connected to the inlet of the oil storage tank. The diameter of the oil inlet pipe is larger than the diameter of the oil leakage pipe.

[0019] In some embodiments, the oil inlet pipe is a retractable corrugated pipe.

[0020] Compared with the prior art, the beneficial effects of this utility model include: the engine oil is guided through the inner wall of the recovery cover to the oil leakage pipe, and then flows into the oil receiving tank, forming a complete recovery path, reducing the cleaning frequency and saving costs. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the overall structure of the recycling device provided by this utility model;

[0022] Figure 2 is an enlarged view of a partial structure at point A in Figure 1 provided by this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Recycling cover; 11. Box body; 12. Base plate; 2. Test bench; 3. Oil leakage pipe; 31. Valve; 32. Filter screen; 4. Oil receiving tank; 41. Oil storage tank; 42. Oil inlet pipe; 5. Fixing assembly; 51. Screw; 52. Nut; 53. Through hole; 54. Handle; 6. Anti-loosening assembly; 61. Anti-loosening gear; 62. Anti-loosening tooth block; 63. Slot; 7. Sealing assembly; 71. Convex elastic strip; 72. Concave elastic strip. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0026] This utility model provides a recovery device for an oil rail pressure testing machine. Its structure is shown in Figures 1 and 2, including a recovery cover 1, an oil leakage pipe 3, a filter screen 32, a heating wire, and an oil receiving tank 4.

[0027] The recycling cover 1 is fitted onto the outside of the test bench 2.

[0028] The inlet of the oil leak pipe 3 is connected to the bottom of the recovery hood 1.

[0029] The filter screen 32 is installed at the inlet of the oil leakage pipe 3.

[0030] The heating wire is installed inside the filter screen 32.

[0031] The oil receiving tank 4 is located below the recovery cover 1, and the outlet of the oil leakage pipe 3 is connected to the inlet of the oil receiving tank 4.

[0032] During use, if poor oil rail sealing causes oil splashing during oil rail pressure testing, the recovery cover 1, installed outside the test bench 2, acts like a barrier to intercept the splashed oil within the recovery cover 1. The splashed oil flows downwards under gravity to the bottom of the recovery cover 1, and is then guided and transported through the oil drain pipe 3 connected to the bottom of the recovery cover 1. When the oil flows through the filter screen 32 at the inlet of the oil drain pipe 3, the filter screen 32 intercepts and filters any impurities, iron filings, etc., that may be present in the oil, preventing these impurities from entering the oil receiving tank 4 and affecting subsequent processing or use. Simultaneously, the heating wire installed inside the filter screen 32 heats the oil, reducing its viscosity and allowing it to pass through the filter screen 32 more smoothly, reducing the likelihood of clogging the filter screen 32 due to oil viscosity and ensuring the oil flows smoothly through the filter screen 32 into the oil drain pipe 3. Finally, the filtered and heated engine oil flows through the oil drain pipe 3 and into the oil collection tank 4 below, thus collecting and recycling the splashed engine oil and completing the entire recycling process.

[0033] In this invention, the engine oil is guided through the inner wall of the recovery cover 1 to the oil leakage pipe 3, and then flows into the oil receiving tank 4, forming a complete recovery path, which reduces the cleaning frequency and saves costs.

[0034] To facilitate cleaning the inside of the recycling hood 1, please refer to Figure 1. In a preferred embodiment, the recycling hood 1 includes a box body 11 and a bottom plate 12, wherein the bottom plate 12 is detachably connected to the bottom of the box body 11.

[0035] When residual oil and impurities remain inside the recovery hood 1 during use, the traditional one-piece structure requires complex operations to thoroughly clean it. However, the design of the detachable bottom plate 12 allows operators to quickly separate the bottom plate 12 from the housing 11. Simply by removing the bottom plate 12, the inside of the housing 11 and the surface of the bottom plate 12 can be thoroughly cleaned, removing residual oil stains from hard-to-reach areas.

[0036] To achieve a detachable connection between the housing 11 and the base plate 12, please refer to Figure 2. In a preferred embodiment, the recycling cover 1 further includes a fixing component 5. The fixing component 5 includes a screw 51 and a nut 52. The screw 51 is connected to the bottom of the housing 11. The base plate 12 is provided with a through hole 53 for the screw 51 to pass through. The nut 52 is threaded onto the screw 51 and abuts against the bottom of the base plate 12.

[0037] When using or disassembling, simply loosen the nut 52 to pull the base plate 12 out of the screw 51. When installing, align the through hole 53 of the base plate 12 with the screw 51 and insert it, then tighten the nut 52 until it feels firm. The installation and disassembly are convenient and the fixation is secure.

[0038] To facilitate turning the nut 52, please refer to Figure 2. In a preferred embodiment, the recycling cover 1 further includes a handle 54, which is connected to the nut 52.

[0039] When in use, the traditional nut 52 requires the use of tools such as a wrench to tighten or loosen, which is cumbersome and time-consuming. With the addition of the handle 54, the operator can directly hold the handle 54 and rotate the handle 54 to drive the nut 52 to rotate, so as to quickly assemble and disassemble the base plate 12 and the housing 11.

[0040] To reduce the possibility of the nut 52 loosening by rotation, please refer to Figure 2. In a preferred embodiment, the recycling cover 1 further includes an anti-loosening component 6. The anti-loosening component 6 includes an anti-loosening gear 61 and an anti-loosening tooth block 62. The anti-loosening gear 61 is sleeved on the nut 52. The base plate 12 is provided with a slot 63. The anti-loosening tooth block 62 is engaged in the slot 63, and the anti-loosening tooth block 62 meshes with the anti-loosening gear 61.

[0041] During use, vibrations of the testing machine during oil rail pressure testing may cause nut 52 to loosen. The anti-loosening gear 61 and anti-loosening tooth block 62 mesh with each other, forming a mechanical locking structure that restricts the rotational freedom of nut 52. When nut 52 is subjected to vibration or an external force attempts to rotate it, the teeth of the anti-loosening gear 61 and the teeth of the anti-loosening tooth block 62 mesh with each other, generating reverse resistance and preventing nut 52 from loosening.

[0042] To reduce the possibility of oil leakage from the recovery hood 1, please refer to Figure 2. In a preferred embodiment, the recovery hood 1 further includes a sealing assembly 7. The sealing assembly 7 includes a convex elastic strip 71 and a concave elastic strip 72. The convex elastic strip 71 is connected to the bottom of the housing 11, and the concave elastic strip 72 is connected to the top of the base plate 12. When the base plate 12 is connected to the housing 11, the convex elastic strip 71 is embedded in the concave elastic strip 72.

[0043] During use, in the oil rail pressure test, engine oil may splash and flow, coming into contact with the connection between the recovery hood 11 and the base plate 12. The tight fit between the convex elastic strip 71 and the concave elastic strip 72 forms an elastic sealing barrier. When the base plate 12 is connected to the hood 11, the convex elastic strip 71 is compressed and completely embedded in the concave elastic strip 72, filling the gap between them and preventing engine oil from seeping out from the connection.

[0044] In order to make the oil in the recovery hood 1 quickly gather at the inlet of the oil drain pipe 3, please refer to Figure 2. In a preferred embodiment, the base plate 12 gradually decreases from the periphery to the center, and the inlet of the oil drain pipe 3 is connected to the center of the base plate 12.

[0045] During use, the inclined base plate 12 forms a natural guide surface. After the oil splashes onto the base plate 12, it flows rapidly along the slope to the inlet of the oil leakage pipe 3 in the middle due to gravity.

[0046] To facilitate the replacement of the oil receiving tank 4, please refer to Figure 2. In a preferred embodiment, the recovery device further includes a valve 31, which is installed on the oil leakage pipe 3.

[0047] When using the oil tank 4 or cleaning the recovery cover 1, closing valve 31 can instantly cut off the flow of oil in the oil leakage pipe 3, thus avoiding secondary pollution caused by accidental oil dripping during operation.

[0048] To reduce the possibility of oil leakage, please refer to Figure 2. In a preferred embodiment, the oil receiving tank 4 includes an oil storage tank 41 and an oil inlet pipe 42. The oil inlet pipe 42 is connected to the oil storage tank 41, and the outlet of the oil inlet pipe 42 is connected to the inlet of the oil storage tank 41. The diameter of the oil inlet pipe 42 is larger than the diameter of the oil leakage pipe 3.

[0049] When in use, the design of the diameter difference between the oil inlet pipe 42 and the oil leakage pipe 3 improves the recovery efficiency and enhances the system's shock resistance, making it particularly suitable for the recovery of sudden, high-flow leakage situations during oil rail pressure testing.

[0050] To broaden the applicability of the oil inlet pipe 42, please refer to Figure 2. In a preferred embodiment, the oil inlet pipe 42 is a retractable corrugated pipe.

[0051] When in use, the oil inlet pipe 42 is designed as a retractable corrugated pipe structure. Through flexible deformation and displacement compensation characteristics, the performance of the recovery device is optimized from the dimensions of installation adaptability, vibration buffering, and spatial layout.

[0052] To better understand this utility model, the working principle of a recovery device for an oil rail pressure testing machine is described in detail below with reference to Figures 1 and 2: During oil rail pressure testing, if poor oil rail sealing causes oil splashing, the recovery cover 1, fitted outside the test bench 2, acts like a barrier to intercept the splashed oil within the recovery cover 1. Under gravity, the splashed oil flows downwards to the bottom of the recovery cover 1, and is then guided and transported through the oil drain pipe 3 connected to the bottom of the recovery cover 1. When the oil flows through the filter screen 32 at the inlet of the oil drain pipe 3, the filter screen 32 intercepts and filters any impurities, iron filings, etc., that may be present in the oil, preventing these impurities from entering the oil receiving tank 4 and affecting subsequent processing or use. Simultaneously, the heating wire installed inside the filter screen 32 heats the oil, reducing its viscosity and allowing it to pass through the filter screen 32 more smoothly, reducing the likelihood of clogging the filter screen 32 due to oil viscosity, and ensuring that the oil flows smoothly through the filter screen 32 into the oil drain pipe 3. Finally, the filtered and heated engine oil flows through the oil drain pipe 3 and into the oil collection tank 4 below, thus collecting and recycling the splashed engine oil and completing the entire recycling process.

[0053] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A recovery device for an oil rail pressure testing machine, characterized in that, include: The system includes: a recovery hood fitted over the outside of the test bench; an oil leakage pipe with its inlet connected to the bottom of the recovery hood; a filter screen installed at the inlet of the oil leakage pipe; a heating wire installed inside the filter screen; and an oil receiving tank located below the recovery hood, with the outlet of the oil leakage pipe connected to the inlet of the oil receiving tank.

2. The recovery device for the oil rail pressure testing machine according to claim 1, characterized in that, The recycling hood includes a box body and a bottom plate, with the bottom plate detachably connected to the bottom of the box body.

3. The recovery device for the oil rail pressure testing machine according to claim 2, characterized in that, The recycling hood also includes a fixing component, which includes a screw and a nut. The screw is connected to the bottom of the box, and the bottom plate has a through hole for the screw to pass through. The nut is threaded onto the screw and abuts against the bottom of the bottom plate.

4. The recovery device for the oil rail pressure testing machine according to claim 3, characterized in that, The recycling hood also includes a handle, which is attached to a nut.

5. The recovery device for the oil rail pressure testing machine according to claim 3, characterized in that, The recycling hood also includes an anti-loosening component, which includes an anti-loosening gear and an anti-loosening tooth block. The anti-loosening gear is sleeved on the nut, and the base plate is provided with a slot. The anti-loosening tooth block is engaged in the slot, and the anti-loosening tooth block meshes with the anti-loosening gear.

6. The recovery device for the oil rail pressure testing machine according to claim 2, characterized in that, The recycling hood also includes a sealing assembly, which includes a convex elastic strip and a concave elastic strip. The convex elastic strip is connected to the bottom of the box, and the concave elastic strip is connected to the top of the base plate. When the base plate is connected to the box, the convex elastic strip is embedded in the concave elastic strip.

7. The recovery device for the oil rail pressure testing machine according to claim 2, characterized in that, The base plate gradually decreases from the periphery to the center, and the inlet of the oil leakage pipe is connected to the center of the base plate.

8. The recovery device for the oil rail pressure testing machine according to claim 1, characterized in that, The recovery device also includes a valve, which is installed on the oil leak pipe.

9. The recovery device for the oil rail pressure testing machine according to claim 1, characterized in that, The oil receiving tank includes an oil storage tank and an oil inlet pipe. The oil inlet pipe is connected to the oil storage tank, and the outlet of the oil inlet pipe is connected to the inlet of the oil storage tank. The diameter of the oil inlet pipe is larger than the diameter of the oil leakage pipe.

10. The recovery device for the oil rail pressure testing machine according to claim 9, characterized in that, The oil inlet pipe is a retractable corrugated pipe.

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