Detection device for sealing shell of automobile engine

Abstract

The utility model relates to the technical field of sealing shell detection, and discloses a detection device for an automobile engine sealing shell, which comprises a detection tank and a sealing cover, the detection tank is of a circular tank body structure with an open top, a cavity is reserved at the bottom, a pressure gauge is arranged on the front side, and the sealing cover covers the top of the detection tank and is in screw-thread fit with the top of the detection tank; the lifting structure is arranged in the detection tank, and the automobile engine sealing shell is placed on the lifting structure; the water tank is arranged on the rear side of the detection tank, and the pressurization structure is arranged in the bottom cavity of the detection tank and connected with the water tank; the water return structure is arranged in the bottom cavity of the detection tank, and water in the detection tank returns into the water tank through the water return structure. Compared with the prior art, the engine shell sealing performance detection device has the advantages that the engine shell sealing performance is detected in the mode that the sealed engine shell is placed in high-pressure water and water pressure changes are observed, the detection result is more objective and accurate, the water can be recycled, and the engine shell sealing performance detection device is more environmentally friendly.

Description

Technical Field

[0001] This utility model relates to the field of sealed housing detection technology, specifically to a detection device for automotive engine sealed housings. Background Technology

[0002] The sealing of the engine housing not only protects the engine from dust and impurities but also prevents oil leaks and reduces the risk of vehicle fire. Furthermore, a poorly sealed engine housing allows outside air to enter, reducing fuel efficiency and increasing fuel consumption. Unstable air pressure can also affect the normal operation of the engine, leading to decreased power, impacting acceleration performance and driving experience. Additionally, a poorly sealed engine housing can cause noise and unpleasant odors during engine operation.

[0003] Existing engine housing seal testing is mostly done manually, using multiple bolts to seal and tighten the engine housing, then immersing the sealed engine housing in water and flushing it with compressed air to observe whether there is a leak in the oil pan. This method has limited detection capabilities and cannot detect situations where there is no air leakage but the seal is at risk. After a period of use, the sealing performance may become problematic, and the test requires manual observation of the housing seal condition, which has limitations and subjectivity. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned technical difficulties and provide a detection device for the sealed housing of an automobile engine. The device detects the sealing performance of the engine housing by immersing the sealed engine housing in water and pressurizing it, and observing the water pressure. The water used for detection can be repeatedly recycled.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A testing device for a sealing housing of an automobile engine, comprising:

[0007] The test tank and the cap; the test tank is a circular tank structure with an open top and a reserved chamber at the bottom. A pressure gauge is installed on the front side. The cap is closed and threaded onto the top of the test tank.

[0008] The lifting structure is installed inside the testing tank, and the sealing housing of the automobile engine is placed on the lifting structure;

[0009] The water tank and pressurization structure are located at the rear of the test tank and at the bottom of the test tank, and are connected to the water tank.

[0010] The water return structure is located in the bottom chamber of the testing tank, through which the water in the testing tank returns to the water tank.

[0011] As an improvement, the lifting structure includes a cylinder and a sieve plate; the sieve plate is placed horizontally, and a cylinder is provided on each side. The cylinder ends of the two cylinders are fixed to the bottom surface of the detection tank, and the telescopic ends are connected and fixed to the bottom surface of the sieve plate.

[0012] As an improvement, the pressurization structure includes a pressurization pump, a water suction pipe, and a pressurization water pipe; the pressurization pump is fixed in the bottom chamber of the test tank, and the water inlet is connected to the bottom of the water tank through the water suction pipe, the water outlet is connected to the inside of the test tank through the pressurization water pipe, and an inlet valve is provided on the pressurization water pipe.

[0013] As an improvement, the water return structure includes a water return pump, a pressure reducing water pipe, a return water pipe, a three-way valve, and a drain pipe. The water return pump is fixed in the bottom chamber of the test tank, and the outlet end is connected to the water tank through the return water pipe. The inlet end is connected to the bottom of the test tank through the pressure reducing water pipe, and a pressure reducing water valve is installed on the pressure reducing water pipe. The three-way valve is installed on the return water pipe, and the drain pipe is connected to the three-way valve. After the water in the test tank is pumped out by the water return pump, it is controlled by the three-way valve to return to the water tank along the return water pipe or be discharged along the drain pipe.

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] 1. This utility model detects the sealing performance of an engine housing by immersing it in water and applying pressure, and then observing the changes in water pressure. The test results are more objective and data-driven.

[0016] 2. This utility model is equipped with a lifting structure, which facilitates the filling and recycling of the engine sealing housing, making it more convenient and labor-saving to use.

[0017] 3. This utility model is equipped with a water tank and a water return structure, which can recycle and reuse the water being tested, effectively reducing water waste and making it more environmentally friendly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0020] Figure 3 This is a cross-sectional schematic diagram of the testing tank of this utility model.

[0021] Figure 4 This is a cross-sectional schematic diagram of the testing tank of this utility model.

[0022] Figure 5 This is a partial structural schematic diagram of the present invention.

[0023] As shown in the figure: 1. Testing tank; 2. Cover; 3. Water tank; 4. Sieve plate; 5. Cylinder; 6. Pressure pump; 7. Return water pump; 8. Water supply pipe; 9. Water suction pipe; 10. Pressure boosting pipe; 11. Pressure reducing pipe; 12. Return water pipe; 13. Three-way valve; 14. Sewage pipe; 15. Drain pipe; 16. Air vent valve; 17. Pressure gauge; 18. Pressure reducing valve; 19. Water inlet valve; 20. Drain valve; 21. Support bracket. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] A testing device for automotive engine sealing housings, such as Figure 1 As shown, it includes:

[0027] Test tank 1 has an open-top circular tank structure with an external thread at the top opening and a pre-reserved chamber at the bottom (e.g., Figure 3 As shown, the top wall of the chamber is the bottom of the testing tank 1, and a pressure gauge 17 is installed on the front side (the pressure gauge 17 has a suitable range and can transmit the test results to the control terminal). A drain outlet is provided in the middle of the bottom of the testing tank 1, and a water inlet is provided at the bottom of the side wall. The cover 2 is adapted to the testing tank 1 and is threaded onto the opening of the testing tank 1 (the connection is sealed after the cover 2 and the testing tank 1 are threaded together). An exhaust valve 16 is provided on the cover 2 (e.g., ...). Figure 2 As shown, the exhaust valve 16 is a manual valve, and the lifting structure is installed inside the detection tank 1, as shown. Figure 3 As shown, it includes a cylinder 5 and a sieve plate 4; the sieve plate 4 is placed horizontally (to prevent water accumulation), and a cylinder 5 is provided on each of its two sides. The cylinder ends of the two cylinders 5 are fixed to the bottom surface of the detection tank 1, and the telescopic ends are connected and fixed to the bottom surface of the sieve plate 4.

[0028] Water tank 3 is located behind test tank 1 and is supported and fixed by bracket 21. A water supply pipe 8 is installed on the top of one side wall (water tank 3 is connected to the water supply pump and water system via water supply pipe 8). A drain pipe 15 is installed at the bottom, and a drain valve 20 is installed on the drain pipe 15. The pressurization structure and the return water structure are respectively located in the bottom cavity of test tank 1 and connected to water tank 3 (e.g., Figure 5 As shown), specifically: a pressurization structure, including a pressurization pump 6, a suction pipe 9, and a pressurization water pipe 10; the pressurization pump 6 is fixed in the bottom cavity of the test tank 1, and its inlet end is connected to the bottom of the water tank 3 through the suction pipe 9, and its outlet end is connected to the inside of the test tank 1 through the pressurization water pipe 10, with an inlet valve 19 installed on the pressurization water pipe 10; a return water structure, including a return water pump 7, a pressure reducing water pipe 11, a return water pipe 12, a three-way valve 13, and a drain pipe 14; the return water pump 7 is fixed in the bottom cavity of the test tank 1, and its outlet end is connected to the inside of the test tank 1 through the pressurization water pipe 10, with an inlet valve 19 installed on the pressurization water pipe 10; and a return water structure, including a return water pump 7, a pressure reducing water pipe 11, a return water pipe 12, a three-way valve 13, and a drain pipe 14; the return water pump 7 is fixed in the bottom cavity of the test tank 1, and its outlet end is connected to the bottom of the test tank 1 through the suction pipe 9, and its outlet end is connected to the bottom of the test tank 1 through the pressurization water pipe 10, with an inlet valve 19 installed on the pressurization water pipe 10. The water end is connected to the water tank 3 through the return water pipe 12, and the water inlet end is connected to the bottom of the detection tank 1 through the pressure reducing water pipe 11. The pressure reducing water pipe 11 is equipped with a pressure reducing water valve 18, and a three-way valve 13 is installed on the return water pipe 12. The drain pipe 14 is connected to the three-way valve 13 (each port of the three-way valve 13 is connected to the drain pipe 14, the return water pump 7, and the water tank 3 respectively). In the above description, the pressure reducing water valve 18, the water inlet valve 19, the three-way valve 13, and the drain valve 20 are all solenoid valves, and they are remotely controlled together with the cylinder 5.

[0029] In the specific implementation of this embodiment:

[0030] The engine housing is sealed and secured with multiple bolts. Then, the top cover 2 of the test tank 1 is opened, and cylinder 5 is extended, raising the sieve plate 4 to the opening of the test tank 1. The secured engine housing is then stably placed on the sieve plate 4. Cylinder 5 is then retracted, bringing the engine housing into the test tank 1. The cover 2 is screwed back onto the test tank 1. The pressure reducing water valve 18 is closed, and the inlet valve 19, pressurizing pump 6, and exhaust valve 16 are opened to inject water into the test tank 1 and expel the gas inside until water comes out of the exhaust valve 16. The exhaust valve 16 is then closed, and the engine housing is submerged in water. Water continues to be injected into the test tank 1 through the pressurizing pump 6 to increase the pressure inside. When the pressure gauge 17 shows that the pressure has reached the set pressure value, the inlet valve 19 and pressurizing pump 6 are closed. The pressure gauge 17 is observed to ensure the pressure remains stable. If the pressure remains stable for a long time, the sealing test is passed. If the pressure drops slowly, the engine housing is leaking or seeping water, and the sealing test is failed. According to the test results, if the test is qualified, the return water pump 7 and the pressure reducing water pipe 11 are turned on, and the three-way valve 13 is set to the water tank 3. Through the return water pump 7, the high pressure water in the test tank 1 is gradually reduced and decreased, and is transported back to the water tank 3 along the return water pipe 12. If the test is unqualified, the three-way valve 13 is set to the drain pipe 14, and the contaminated high pressure water in the test tank 1 is discharged through the drain pipe 14 (some high pressure water comes into contact with substances such as engine oil inside the engine housing, and the surface of the engine housing is seriously contaminated, so it is also directly discharged). After the water pressure in the test tank 1 drops to the normal value and the return water is finished, the cover 2 is opened, and the cylinder 5 is controlled to extend, and the engine housing on the screen plate 4 is lifted to the mouth of the test tank 1 and removed. The test results are verified and recorded (judged by whether there is obvious water in the engine housing, to avoid the engine housing having extremely poor airtightness, serious water leakage, and the housing being filled with test water during the pressurization stage, which would invalidate the test results).

[0031] The water tank 3 needs to be filled with clean water to a height of one-half to two-thirds for use. When the water level is insufficient, water is added through the water supply pipe 8. When the water level is too high or the water quality is poor, the drain valve 20 is opened and the water is drained through the drain pipe 15.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A testing device for a sealed housing of an automobile engine, characterized in that, Include: Detection tank (1) and cover (2); detection tank (1) is the open top circular tank structure, and the bottom is reserved a chamber, the front side is provided with pressure gauge (17), cover (2) covers and is screwed in the top of detection tank (1); Lifting structure, set in detection tank (1), and the automobile engine sealed shell is placed on the lifting structure; Water tank (3) and pressurizing structure, water tank (3) is set in the back of detection tank (1), and pressurizing structure is set in the bottom chamber of detection tank (1), and is connected with water tank (3); Water return structure, set in the bottom chamber of detection tank (1), the water in detection tank (1) returns to water tank (3) through water return structure.

2. The detection device of a sealing case of an automobile engine according to claim 1, characterized in that: The lifting structure includes cylinder (5) and sieve plate (4); sieve plate (4) is horizontally placed, and both sides are provided with cylinder (5) respectively, and the cylinder end of two cylinders (5) is fixed on the bottom surface of detection tank (1) respectively, and the telescopic end is connected and fixed with the bottom surface of sieve plate (4) respectively.

3. The detection device of a sealing case of an automobile engine according to claim 1, characterized in that: The pressurizing structure includes pressurizing pump (6), water suction pipe (9) and pressurizing water pipe (10); pressurizing pump (6) is fixed in the bottom chamber of detection tank (1), and the water inlet end is connected with the bottom of water tank (3) through water suction pipe (9), and the water outlet end is connected with the inside of detection tank (1) through pressurizing water pipe (10), and the water inlet valve (19) is arranged on pressurizing water pipe (10).

4. The detection device of a sealing case of an automobile engine according to claim 1, characterized in that: The water return structure includes water return pump (7), pressure reducing water pipe (11) and water return pipe (12); water return pump (7) is fixed in the bottom chamber of detection tank (1), and the water outlet end is connected with water tank (3) through water return pipe (12), and the water inlet end is connected with the bottom of detection tank (1) through pressure reducing water pipe (11), and the pressure reducing water valve (18) is arranged on pressure reducing water pipe (11).

5. The detection device of a sealing case of an automobile engine according to claim 4, characterized in that: Also include three-way valve (13) and blowdown pipe (14); three-way valve (13) is set on water return pipe (12), and blowdown pipe (14) is connected with three-way valve (13), and the water in detection tank (1) is drawn away by water return pump (7), returns to water tank (3) or is discharged through blowdown pipe (14).

6. The detection device of a sealing case of an automobile engine according to claim 1, characterized in that: The water tank (3) is provided with water supplement pipe (8) and drain pipe (15), and the drain valve (20) is arranged on the drain pipe (15).

7. The detection device of a sealing case of an automobile engine according to claim 1, characterized in that: The cover (2) is provided with exhaust valve (16).

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