Oil-water separation mechanism and air tightness detector

Abstract

The utility model relates to the technical field of air tightness detectors, and discloses an oil-water separation mechanism which comprises an oil-water separator connected to an air tightness detector body, the air tightness detector further comprises the oil-water separation mechanism. The annular plate is mounted on the outer side of the drain pipe at the bottom of the water cup, the top plate can be stably pushed to ascend after gas is injected through a clamping mechanism between the top plate and the annular plate, liquid in the water cup is guaranteed not to leak, the top plate falls back to drive the drain pipe to be pulled down after gas supply is cut off, and therefore the drainage function is achieved. By means of the design, when the air tightness detector body does not work, the drainage pipe is automatically opened to drain water. Through the automatic opening and closing mechanism, the problem that a large amount of sewage is accumulated in the water cup due to the fact that water drainage operation is forgotten to be executed is effectively avoided, equipment is kept clean, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing instruments, specifically an oil-water separation mechanism and an airtightness testing instrument. Background Technology

[0002] Battery packs are core components of new energy vehicles and other equipment, and their sealing directly affects safety and lifespan, requiring the prevention of electrolyte leakage or intrusion of external contaminants. Air tightness testers accurately detect battery pack leakage rates (with an accuracy of ±1 Pa) through inflation, pressure stabilization, and pressure / flow monitoring. The oil-water separator on the back of the tester filters oil and water impurities from the compressed air, preventing contamination of the battery pack or interference with sensors.

[0003] For example, patent publication number CN216116546U discloses a battery pack airtightness tester, including a housing. The housing is provided with an air inlet connector, which is connected to a main air inlet pipe provided inside the housing. A first oil mist separator and a second oil mist separator are connected in series on the main air inlet pipe. The end of the main air inlet pipe is connected to a four-way connector, which is also connected to a first pipe, a second pipe and a third pipe respectively. The first pipe and the second pipe are connected in parallel. The outlet ends of the first pipe and the second pipe are connected to a high-pressure connector provided on the surface of the housing through a three-way connector. The outlet end of the third pipe is connected to a low-pressure connector provided on the surface of the housing.

[0004] While the aforementioned device solves the problem of operational inconvenience, the following issues remain: The air compressor is connected to the inlet of the oil-water separator via a pipe. Its function is to separate the liquid entrained in the compressed air and collect it in a specially designed collection cup. Normally, to drain the accumulated liquid, the drain port located at the bottom of the collection cup needs to be pulled. However, in actual use, users often forget to perform this draining step, resulting in the continuous accumulation of liquid in the collection cup. This situation may not only lead to the accumulation of impurities but also affect the normal operating efficiency and service life of the equipment. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an oil-water separation mechanism and an airtightness tester, enabling the oil-water separation mechanism to automatically drain water during airtightness testing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oil-water separation mechanism, comprising an oil-water separator connected to the body of an airtightness tester, an air inlet pipe connected to one side of the oil-water separator, a water cup connected to the lower end of the oil-water separator, and a drain pipe connected to the bottom of the water cup. Two mounting plates are connected to both sides of the outer wall of the water cup, and the two mounting plates are symmetrically arranged. An annular plate is fixedly connected to the outer wall of the drain pipe. Two top plates are connected to the outer wall of the annular plate. A rectangular groove is opened in each of the two mounting plates, and a lifting component for driving the top plate to rise and fall is connected in the rectangular groove.

[0007] Furthermore, both sets of lifting components include a column and a sliding rod. The column is located in and fixedly connected to a rectangular groove. A sliding cavity is provided inside the column, and a sliding rod is slidably connected inside the sliding cavity. A spring is sleeved on the outer wall of the sliding rod. One end of the spring abuts against the top of the column, and the other end abuts against the bottom surface of the top plate. A branch pipe is fixedly connected to the outer wall of the air intake pipe. A connecting pipe is connected to the lower end of the branch pipe. One end of the connecting pipe passes through the bottom of the column and communicates with the sliding cavity. The sliding rod inside the column, which is fixedly connected to the connecting pipe, is configured as a piston rod.

[0008] Furthermore, a solenoid valve is fixedly installed between the connecting pipe and the branch pipe.

[0009] Furthermore, each of the two mounting plates is fixedly connected to an end plate at its top, and an arc plate is fixedly connected to both sides of the end plate. The two sets of symmetrically arranged arc plates are connected by fastening bolts, and the inner walls of the two sets of arc plates abut against the outer wall of the water cup.

[0010] Furthermore, two sets of elastic rings are fixedly connected to the outer wall of the drain pipe, and a flexible hose is sleeved on the outer wall of the drain pipe.

[0011] Furthermore, the top plate and the annular plate are snap-fitted together.

[0012] An airtightness tester includes an airtightness tester body and the aforementioned oil-water separation mechanism.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention features an annular plate installed on the outside of the drain pipe at the bottom of the water cup. A clamping mechanism between the top plate and the annular plate ensures that the top plate is stably pushed upwards after gas injection, preventing liquid leakage. When the gas supply is cut off, the top plate falls back down, pulling the drain pipe down to drain the water. This design allows the drain pipe to automatically open and drain water when the airtightness detector is not in operation. This automatic opening and closing mechanism effectively prevents the accumulation of large amounts of wastewater in the water cup due to forgetting to drain, keeping the equipment clean and extending its service life. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the overall rear view of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the oil-water separator and air inlet pipe of this utility model;

[0018] Figure 4 This is a partial three-dimensional structural diagram of the water cup and drain pipe of this utility model;

[0019] Figure 5 This is a three-dimensional cross-sectional structural diagram of the mounting plate, column, and top plate of this utility model;

[0020] Figure 6 This is a three-dimensional structural diagram of the air intake pipe, branch pipe, and solenoid valve of this utility model.

[0021] In the diagram: 1. Air tightness tester body; 2. Oil-water separator; 3. Air inlet pipe; 4. Water cup; 5. Mounting plate; 6. Connecting pipe; 7. Hose; 8. Branch pipe; 9. Solenoid valve; 10. Column; 11. Slide rod; 12. Spring; 13. Sliding cavity; 14. Drain pipe; 15. Rectangular groove; 16. Annular plate; 17. Top plate; 18. Elastic ring; 19. End plate; 20. Arc plate; 21. Fastening bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] like Figures 1 to 6 As shown, an oil-water separation mechanism includes an oil-water separator 2 connected to the airtightness tester body 1, an air inlet pipe 3 connected to one side of the oil-water separator 2, a water cup 4 connected to the lower end of the oil-water separator 2, and a drain pipe 14 connected to the bottom of the water cup 4. Two mounting plates 5 are connected to both sides of the outer wall of the water cup 4. The two mounting plates 5 are symmetrically arranged. An annular plate 16 is fixedly connected to the outer wall of the drain pipe 14. Two top plates 17 are connected to the outer wall of the annular plate 16. A rectangular groove 15 is opened in each of the two mounting plates 5. A lifting component for driving the top plate 17 to rise and fall is connected in the rectangular groove 15.

[0024] like Figure 1As shown, the oil-water separation mechanism in this utility model is similar in structure to existing battery pack airtightness testers, such as the battery pack airtightness tester disclosed in patent publication number CN216116546U. The main improvement of this utility model is that the oil-water separation mechanism in the airtightness test can automatically drain water, such as... Figures 1 to 6 As shown, in the oil-water separation mechanism of this utility model, when the air inlet pipe 3 starts to intake air, the lifting component will be activated, driving the two top plates 17 to rise, so that the top plates 17 drive the annular plate 16 to rise steadily, so that the drain pipe 14 seals the bottom of the water cup 4. The drain pipe 14 rises to seal the bottom of the water cup 4. This is the prior art and will not be described in detail here. When the gas supply stops, the lifting component drives the top plates 17 to fall, drives the annular plate 16 to fall, pulls the annular plate 16 and the drain pipe 14 to fall, and the drain pipe 14 starts to drain water.

[0025] By installing an annular plate 16 on the outside of the drain pipe 14 at the bottom of the water cup 4, and through a clamping mechanism between the top plate 17 and the annular plate 16, the top plate 17 can be stably pushed upward after gas injection, ensuring that the liquid inside the water cup 4 will not leak. When the gas supply is cut off, the top plate 17 falls back, pulling the drain pipe 14 down, thereby realizing the drainage function. This design allows the drain pipe 14 to automatically open for drainage when the airtightness detector body 1 is not working. This automatic opening and closing mechanism effectively avoids the problem of a large amount of sewage accumulating in the water cup 4 due to forgetting to perform the drainage operation, keeping the equipment clean and extending its service life.

[0026] By setting an annular plate 16 on the outside of the drain pipe 14 at the bottom of the water cup 4, and using the clamping between the top plate 17 and the annular plate 16, the top plate 17 can be stably pushed up after gas is introduced, ensuring that the liquid in the water cup 4 will not leak. After the gas is introduced, the top plate 17 will descend, pulling down the drain pipe 14 to perform the drainage action. That is, when the airtightness tester body 1 is not working, the drain pipe 14 will open to drain. Through the above-mentioned automatic opening and closing of the drain pipe 14, it can effectively prevent the accumulation of a lot of dirty water in the water cup 4 due to forgetting to drain.

[0027] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, both sets of lifting components include a column 10 and a sliding rod 11. The column 10 is located in and fixedly connected to the rectangular groove 15. A sliding cavity 13 is provided in the column 10. The sliding rod 11 is slidably connected in the sliding cavity 13. A spring 12 is sleeved on the outer wall of the sliding rod 11. One end of the spring 12 abuts against the top of the column 10, and the other end abuts against the bottom surface of the top plate 17. A branch pipe 8 is fixedly connected to the outer wall of the air intake pipe 3. A connecting pipe 6 is connected to the lower end of the branch pipe 8. One end of the connecting pipe 6 passes through the bottom of the column 10 and communicates with the sliding cavity 13. The sliding rod 11 in the column 10, which is fixedly connected to the connecting pipe 6, is set as a piston rod.

[0028] Specifically, when the gas enters through the inlet pipe 3, it enters the connecting pipe 6 through the branch pipe 8 and enters one of the columns 10. The sliding rod 11, which is set for the piston rod, is lifted by air pressure, which drives the top plate 17 to rise. The other one is set with a normal sliding rod, so the annular plate 16 can rise smoothly.

[0029] The gas that is introduced into the airtightness tester body 1 during operation can lift the piston rod. After the gas is cut off, the piston rod loses pressure and, under the pull of the spring 12, the piston rod 11 descends, thus realizing the drainage action.

[0030] like Figure 3 and Figure 6 As shown, a solenoid valve 9 is fixedly installed between the connecting pipe 6 and the branch pipe 8. The solenoid valve 9 can be used to open and close the connection between the branch pipe 8 and the connecting pipe 6.

[0031] like Figure 4 and Figure 5 As shown, end plates 19 are fixedly connected to the top of both mounting plates 5, and arc plates 20 are fixedly connected to both sides of the end plates 19. The two sets of symmetrically arranged arc plates 20 are connected by fastening bolts 21, and the inner walls of the two sets of arc plates 20 abut against the outer wall of the water cup 4.

[0032] Specifically, in order to facilitate the connection between the mounting plate 5 and the water cup 4, the two arc plates 20 of the end plate 19 at the top of the mounting plate 5 can be abutted against the outer wall of the water cup 4, and then the arc plate 20 on the other end plate 19 can be connected to the water cup 4. Finally, the connection can be fastened by the fastening bolt 21, so that the two mounting plates 5 can be detachably connected on the outside of the drain pipe 14.

[0033] like Figure 4 and Figure 5 As shown, two sets of elastic rings 18 are fixedly connected to the outer wall of the drain pipe 14, and a flexible hose 7 is sleeved on the outer wall of the drain pipe 14.

[0034] Specifically, the hose 7 facilitates the discharge of sewage to a designated location, and the hose 7 can be fixed by friction using the elastic ring 18.

[0035] like Figure 5As shown, the top plate 17 and the annular plate 16 are snap-fitted together using a detachable mounting plate 5, which allows the top plate 17 and the annular plate 16 to be detachably connected, facilitating modular installation, disassembly and replacement.

[0036] An airtightness tester includes an airtightness tester body 1 and the aforementioned oil-water separation mechanism.

[0037] In the above structure, the solenoid valve 9 is a mature existing technology, so it will not be described in detail.

[0038] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. An oil-water separation mechanism, comprising an oil-water separator (2) connected to the body (1) of an airtightness tester, an air inlet pipe (3) connected to one side of the oil-water separator (2), a water cup (4) connected to the lower end of the oil-water separator (2), and a drain pipe (14) connected to the bottom of the water cup (4), characterized in that, The water cup (4) has two mounting plates (5) connected to its outer walls on both sides. The two mounting plates (5) are symmetrically arranged. The outer wall of the drain pipe (14) is fixedly connected to an annular plate (16). The outer wall of the annular plate (16) is connected to two top plates (17). Each of the two mounting plates (5) has a rectangular groove (15). The rectangular groove (15) is connected to a lifting component for driving the top plate (17) to rise and fall.

2. The oil-water separation mechanism according to claim 1, characterized in that, Both sets of lifting components include a column (10) and a sliding rod (11). The column (10) is located in and fixedly connected to a rectangular groove (15). A sliding cavity (13) is provided in the column (10). The sliding rod (11) is slidably connected in the sliding cavity (13). A spring (12) is sleeved on the outer wall of the sliding rod (11). One end of the spring (12) abuts against the top of the column (10), and the other end abuts against the bottom surface of the top plate (17). A branch pipe (8) is fixedly connected to the outer wall of the air inlet pipe (3). A connecting pipe (6) is connected to the lower end of the branch pipe (8). One end of the connecting pipe (6) passes through the bottom of the column (10) and communicates with the sliding cavity (13). The sliding rod (11) in the column (10) fixedly connected to the connecting pipe (6) is a piston rod.

3. The oil-water separation mechanism according to claim 2, characterized in that, A solenoid valve (9) is fixedly installed between the connecting pipe (6) and the branch pipe (8).

4. The oil-water separation mechanism according to claim 3, characterized in that, Both mounting plates (5) are fixedly connected to the top of an end plate (19), and an arc plate (20) is fixedly connected to both sides of the end plate (19). The two sets of symmetrically arranged arc plates (20) are connected by fastening bolts (21), and the inner walls of the two sets of arc plates (20) abut against the outer wall of the water cup (4).

5. The oil-water separation mechanism according to claim 4, characterized in that, Two sets of elastic rings (18) are fixedly connected to the outer wall of the drain pipe (14), and a flexible hose (7) is sleeved on the outer wall of the drain pipe (14).

6. The oil-water separation mechanism according to claim 5, characterized in that, The top plate (17) and the annular plate (16) are snap-fitted together.

7. An airtightness testing instrument, comprising an airtightness testing instrument body (1), characterized in that, It also includes the oil-water separation mechanism described in any one of claims 1-6 above.

Images