Device for detecting air tightness of polyethylene medicine bottle

Abstract

The utility model discloses a polyethylene medicine bottle air tightness detection device, and relates to the detection device technology field, the polyethylene medicine bottle air tightness detection device comprises a portal frame, a first sealing shell and a separator plate, the top of the portal frame is provided with two elevating cylinders, the bottom telescoping ends of the elevating cylinders are sleeved with an elevating plate, and the surface of the elevating plate is provided with a sealing cover. An air inlet is formed in the top of the sealing cover, an external air pump injects high-pressure air into the medicine bottle through the air inlet in the top of the sealing cover, pressure maintaining operation is carried out, and if leakage occurs in the medicine bottle in the detection process, leaked air can flow into a corresponding cavity between the outer side partition plates, and at the moment, the leakage is avoided. The air pressure sensor mounted on the partition plate can sensitively detect the pressure difference change, and the air pressure sensor feeds back the detected pressure difference signal to the detection terminal equipment in time, so that the leakage point is accurately positioned, the detection efficiency is effectively improved, and the air tightness detection process of the medicine bottle is more efficient and reliable.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, specifically a polyethylene medicine bottle airtightness detection device. Background Technology

[0002] The polyethylene medicine bottle airtightness testing device is a specialized device for testing the sealing performance of polyethylene medicine bottles. It utilizes principles such as pressure difference, bubble observation, or helium detection, combined with a vacuum chamber, pressure sensor, and image acquisition structure to accurately determine whether a leak exists in the medicine bottle, ensuring the bottle's airtightness and the safety of the medicine. A search revealed a Chinese patent publication number CN218847557U, which discloses a precision airtightness testing device for polyethylene plastic bottles. While this device is compact, significantly reduces worker workload, and greatly improves testing accuracy, it can only detect the overall airtightness of the medicine bottle and cannot pinpoint the location of leaks. This reduces the device's accuracy, requiring manual inspection of leak points after testing, thus increasing workload. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a polyethylene medicine bottle airtightness detection device, which solves the problem mentioned in the background art that existing devices cannot further determine the location of the leak point in the medicine bottle, resulting in the need for manual inspection of the leak point after detection.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a polyethylene medicine bottle airtightness testing device, comprising a gantry frame, a first sealing shell, and a partition. Two lifting cylinders are mounted on the top of the gantry frame. A lifting plate is fitted onto the bottom telescopic end of each lifting cylinder. A sealing cover is mounted on the surface of the lifting plate. An air inlet is provided on the top of the sealing cover. A medicine bottle body is located below the sealing cover. A first sealing shell and a second sealing shell are located on both sides of the medicine bottle body. Miniature cylinders are embedded on both sides of the first sealing shell. The telescopic ends of the miniature cylinders are externally connected to both sides of the second sealing shell. One bottom end of the first sealing shell is connected to the bottom of the gantry frame. A partition is provided inside both the first and second sealing shells. A pressure sensor is mounted on the surface of each partition.

[0005] Preferably, there are at least three partitions on the inner sides of the first and second sealing shells, and the first and second sealing shells are tightly fitted together. By providing at least three partitions on the inner sides of the first and second sealing shells and ensuring that they are tightly fitted together, the sealing performance can be effectively improved, ensuring the sealing of the medicine bottle during testing, thereby improving the accuracy of the test.

[0006] Preferably, the partition has an arc-shaped structure and is tightly fitted to the outer wall surface of the medicine bottle. By setting the partition to an arc-shaped structure and tightly fitting it to the outer wall of the medicine bottle, it can better adapt to the shape of the medicine bottle, further enhance the sealing effect, and at the same time help to more accurately detect leakage points at different locations on the surface of the medicine bottle, thereby improving the accuracy and reliability of the detection.

[0007] Preferably, the sealing cover has an inner cavity and an outer cavity. The bottom surface of the inner cavity is in contact with the surface of the medicine bottle body, and a pressure sensor is installed inside the inner cavity. By setting an inner cavity and an outer cavity inside the sealing cover, and installing a pressure sensor at the point where the bottom of the inner cavity is in contact with the surface of the medicine bottle body, the pressure change inside the medicine bottle can be accurately monitored, and the pressure difference between the inside and outside can be distinguished. This allows for a more accurate determination of whether there is a leak in the medicine bottle and its location, significantly improving detection efficiency and accuracy.

[0008] Preferably, the outer cavity is fitted outside the first sealing shell and the second sealing shell. A pressure sensor is provided on the inner wall of the outer cavity. By providing a pressure sensor on the inner wall of the outer cavity, the pressure change in the outer cavity can be monitored in real time. When the inner cavity leaks, the leaked gas enters the outer cavity, and the pressure sensor can accurately detect the pressure difference change, further improving the accuracy and reliability of the detection.

[0009] This invention provides a device for detecting the airtightness of polyethylene medicine bottles. It has the following beneficial effects:

[0010] When using this polyethylene medicine bottle airtightness testing device, the medicine bottle is first placed between the first and second sealing shells, ensuring that the first and second sealing shells fit tightly against the outer wall of the medicine bottle to form a good sealing environment. Then, driven by the lifting cylinder, the lifting plate moves downward, causing the sealing cover to move downward as well. The downward movement of the sealing cover makes its inner cavity fit tightly against the top of the medicine bottle. On this basis, an external air pump injects high-pressure air into the medicine bottle through the air inlet at the top of the sealing cover to perform a pressure holding operation. If the medicine bottle leaks during the testing process, the leaked air will flow into the corresponding cavity between the outer partitions. At this time, the air pressure sensor installed on the partition can sensitively detect the pressure difference change. The air pressure sensor will promptly feed back the detected pressure difference signal to the testing terminal equipment, thereby achieving accurate location of the leak point, effectively improving the testing efficiency, and ensuring that the airtightness testing process of the medicine bottle is more efficient and reliable.

[0011] This solves the problem that existing devices cannot further pinpoint the location of leaks in medicine bottles, requiring manual inspection of the leak points after detection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic cross-sectional view of the present invention.

[0014] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0015] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B;

[0016] Figure 5 This is a schematic diagram of the structure of the first sealing shell and the second sealing shell of this utility model.

[0017] In the diagram, 1. Gantry frame; 2. Lifting cylinder; 3. Lifting plate; 4. Sealing cover; 5. Air inlet; 6. Inner cavity; 7. Outer cavity; 8. Medicine bottle body; 9. First sealing shell; 10. Miniature cylinder; 11. Second sealing shell; 12. Air pressure sensor; 13. Partition. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5This utility model provides a technical solution: a polyethylene medicine bottle airtightness testing device, including a gantry frame 1, a first sealing shell 9, and a partition plate 13. Two lifting cylinders 2 are installed on the top of the gantry frame 1. A lifting plate 3 is fitted onto the bottom telescopic end of each lifting cylinder 2. A sealing cover 4 is installed on the surface of the lifting plate 3. An air inlet 5 is provided on the top of the sealing cover 4. A medicine bottle body 8 is located below the sealing cover 4. A first sealing shell 9 and a second sealing shell 11 are provided on both sides of the medicine bottle body 8. Miniature cylinders 10 are embedded on both sides of the first sealing shell 9. The telescopic end 10 is connected to both sides of the second sealing shell 11. One bottom end of the first sealing shell 9 is connected to the bottom of the gantry frame 1. Both the first sealing shell 9 and the second sealing shell 11 have partitions 13 on their inner sides. Pressure sensors 12 are installed on the surface of the partitions 13. There are at least three partitions 13 on the inner sides of the first sealing shell 9 and the second sealing shell 11. The first sealing shell 9 and the second sealing shell 11 are tightly fitted together. The partitions 13 have an arc-shaped structure and are tightly fitted to the outer wall surface of the medicine bottle body 8. The sealing cover 4 has an inner cavity 6 and an outer cavity inside. 7. One end of the bottom surface of the inner cavity 6 is in contact with the surface of the medicine bottle body 8, and a pressure sensor 12 is installed inside the inner cavity 6; the outer cavity 7 is fitted outside the first sealing shell 9 and the second sealing shell 11, and a pressure sensor 12 is installed on the inner wall of the outer cavity 7. When the device is in use, by placing the medicine bottle body 8 between the first sealing shell 9 and the second sealing shell 11, the first sealing shell 9 and the second sealing shell 11 can be tightly fitted with the outer wall of the medicine bottle to maintain a seal. Then, under the action of the lifting cylinder 2, the lifting cylinder 2 can move downward. As it moves downward, it can also move the sealing cover 4 downward. As the sealing cover 4 moves downward, it can also cause the inner cavity 6 to fit against the top of the medicine bottle body 8. Then, the external air pump pumps high-pressure air into the medicine bottle body 8 through the air inlet 5 to maintain pressure. When the medicine bottle body 8 leaks, the air will flow into the corresponding cavity between the outer partitions 13, and then be detected by the corresponding air pressure sensor 12. The air pressure sensor 12 will then feed the signal back to the detection terminal equipment, which will help to further determine the leak point and improve the detection efficiency.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for detecting the airtightness of polyethylene medicine bottles, characterized in that: The system includes a gantry frame (1), a first sealing shell (9), and a partition (13). Two lifting cylinders (2) are installed on the top of the gantry frame (1). A lifting plate (3) is fitted on the bottom telescopic end of the lifting cylinder (2). A sealing cover (4) is installed on the surface of the lifting plate (3). An air inlet (5) is provided on the top of the sealing cover (4). A medicine bottle body (8) is provided below the sealing cover (4). A first sealing shell (9) and a second sealing shell (11) are provided on both sides of the medicine bottle body (8). A miniature cylinder (10) is embedded on both sides of the first sealing shell (9). The telescopic end of the miniature cylinder (10) is connected to both sides of the second sealing shell (11). One bottom end of the first sealing shell (9) is connected to the bottom of the gantry frame (1). A partition (13) is provided on the inner side of both the first sealing shell (9) and the second sealing shell (11). A pressure sensor (12) is installed on the surface of the partition (13).

2. The polyethylene medicine bottle air tightness detection device according to claim 1, characterized in that: The first sealing shell (9) and the second sealing shell (11) have at least three inner partitions (13), and the first sealing shell (9) and the second sealing shell (11) are tightly fitted together.

3. The device for detecting the air tightness of polyethylene medicine bottles according to claim 2, characterized in that: The partition (13) has an arc-shaped structure and is closely attached to the outer wall surface of the medicine bottle body (8).

4. The device for detecting the air tightness of polyethylene medicine bottles according to claim 3, characterized in that: The sealing cover (4) is provided with an inner cavity (6) and an outer cavity (7). The bottom end surface of the inner cavity (6) is attached to the surface of the medicine bottle body (8), and a pressure sensor (12) is provided inside the inner cavity (6).

5. The device for detecting the gas tightness of polyethylene medicine bottles according to claim 4, characterized in that: The outer cavity (7) is fitted outside the first sealing shell (9) and the second sealing shell (11), and a pressure sensor (12) is provided on the inner wall of the outer cavity (7).

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