Helium sealing performance detection device
By designing a helium gas tightness detection device including an upper pressure plate and a suction component, the problem of false detection caused by helium leakage in the existing technology is solved, and high-precision air tightness detection is achieved.
Patent Information
- Application Number
- CN202421172464.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The existing helium seal detection device can easily lead to helium leakage during the helium passage, resulting in misdetecting.
A helium sealing detection device is designed, including an upper pressure plate and a suction component. The upper pressure plate has a first vent hole and a second vent hole for introducing and discharging helium gas. The suction component is connected to a helium gas detector for sucking gas for concentration detection. The device discharges other gases by introducing helium gas to increase the helium concentration, and prevents helium leakage through the design of the suction component.
This device can improve the concentration of the mule, ensure the detection accuracy, prevent the leakage of the gas in the sealing cavity, and avoid mistaken detection.
Smart Images
Figure CN222393732U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air tightness detection, in particular to a helium air tightness detection device. Background Art
[0002] With the development of industrial technology, various sealing technologies have emerged. Among them, helium sealing detection is a more advanced method and has been widely used in many fields. Helium is an inert gas with stable chemical properties, small molecular weight and strong permeability. It can quickly penetrate tiny gaps or holes, thereby quickly detecting product leakage.
[0003] Canned drinks and canned food can be seen everywhere in daily life. Their airtightness is crucial to the transportation and quality assurance of the products. If there is an airtightness problem and leakage occurs, it will seriously affect the safety of food.
[0004] In the related art, a helium sealing detection device is used to detect the air tightness of the cover of the can to detect whether there is a corrosion cavity or a tear crack formed in the stamping process on the cover. Usually, a seal is used to seal the two sides of the cover. Then, helium is introduced from the sealed cavity through a helium machine from one side of the cover. A helium detector is used on the other side of the cover to detect whether there is helium passing through to detect the air tightness of the cover. However, during the process of the helium machine introducing the sealed cavity, if the amount of helium introduced is too much, the helium is easy to leak from the sealed cavity and be detected by the helium detector, thereby causing false detection. Utility Model Content
[0005] The utility model aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, the purpose of the utility model is to provide a helium sealing detection device, which has a simple structure, can discharge other gases in the original cavity, improve the helium concentration, ensure the detection accuracy, and prevent the helium leakage in the sealed cavity to avoid false detection.
[0006] In order to achieve the above-mentioned purpose, the utility model proposes a helium sealing detection device, which comprises: an upper pressing plate and an air suction component;
[0007] The upper pressing plate has a first vent hole and a second vent hole. The upper pressing plate can be raised and lowered to abut against the upper part of the cover body, so that a first cavity is formed between the upper part of the cover body and the upper pressing plate. The first vent hole is connected to the first cavity so that helium is passed into the first cavity from the first vent hole. The second vent hole is connected to the first cavity so that the helium in the first cavity is discharged from the second vent hole.
[0008] The air suction component is connected to a helium detector, and the air suction component abuts against the lower part of the cover body to form a second cavity with the lower part of the cover body. The air suction component is suitable for sucking the gas in the second cavity to the helium detector for helium concentration detection.
[0009] According to a helium sealing detection device of an embodiment of the utility model, helium is introduced into a first cavity formed by an upward pressing plate and the upper part of a cover body, so that the helium empties other gases in the first cavity and fills the first cavity with helium to contact the cover body, and a second cavity formed between the aspirating component and the lower part of the cover body is aspirated by an aspirating component, so that the helium in the first cavity can quickly pass through the cover body with a torn slit and enter the helium detector through the second cavity, thereby judging the airtightness of the cover body. The helium sealing detection device has a simple structure, can discharge other gases in the original cavity, improve the helium concentration, ensure the detection accuracy, and can prevent the helium leakage in the sealed cavity to avoid false detection.
[0010] In addition, a helium leak detection device according to an embodiment of the utility model may also have the following additional technical features:
[0011] Optionally, the suction component includes a supporting plate and an adsorbent, the supporting plate is suitable for placing the cover body, the supporting plate is provided with a third vent hole, the third vent hole is connected to the second cavity, and the adsorbent abuts against the third vent hole to absorb the gas in the second cavity to the helium detector for helium concentration detection.
[0012] Further, the upper pressing plate has a first abutting portion and a second abutting portion, the first abutting portion is suitable for abutting the supporting plate, the second abutting portion is suitable for abutting the upper portion of the cover body, and the first vent hole and the second vent hole are arranged in the second abutting portion.
[0013] Optionally, the first ventilation hole is arranged adjacent to the second ventilation hole.
[0014] Optionally, the upper pressing plate includes a first lifting driving member, and the first lifting driving member is connected to the upper pressing plate to drive the upper pressing plate to approach or abut against the upper portion of the cover body.
[0015] Furthermore, a plurality of covers are placed on the carrying plate, and the carrying plate can be rotatably arranged to transfer each cover to between the upper pressing plate and the adsorption member.
[0016] Furthermore, the suction assembly includes a second lifting drive member, and the second lifting drive member is connected to the adsorption member to drive the adsorption member to approach or abut against the third ventilation hole.
[0017] Furthermore, it also includes a sealing gasket, which has a fourth ventilation hole. When the adsorbent is close to the third ventilation hole, the adsorbent abuts the sealing gasket against the supporting plate, and the third ventilation hole is connected to the fourth ventilation hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of a helium sealing detection device according to an embodiment of the utility model;
[0019] Figure 2 It is a partial structural schematic diagram of a helium sealing detection device according to an embodiment of the utility model;
[0020] Figure 3 for Figure 2 A magnified view of point A;
[0021] Description of reference numerals:
[0022] The upper pressure plate 1, the first ventilation hole 11, the second ventilation hole 12, the first abutting portion 13, the second abutting portion 14, the first lifting drive member 15, the suction component 2, the supporting plate 21, the third ventilation hole 211, the adsorption member 22, the second lifting drive member 23, the cover body 3, the sealing gasket 4, and the fourth ventilation hole 41. DETAILED DESCRIPTION
[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0024] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0026] Reference below Figure 1-3 , the implementation of the helium sealing detection device proposed in the embodiment of the utility model is described in detail.
[0027] The helium sealing detection device according to the embodiment of the utility model comprises: a bottom upper pressing plate 1 and an air suction component 2.
[0028] Specifically, the upper pressure plate 1 has a first air vent 11 and a second air vent 12. The upper pressure plate 1 can be raised and lowered to abut the upper part of the cover body 3, so that a first cavity is formed between the upper part of the cover body 3 and the upper pressure plate 1. The first air vent 11 is connected to the first cavity to allow helium to pass from the first air vent 11 into the first cavity, and the second air vent 12 is connected to the first cavity to discharge the helium in the first cavity from the second air vent 12; the suction component 2 is connected to a helium detector, and the suction component 2 abuts the lower part of the cover body 3 to form a second cavity with the lower part of the cover body 3. The suction component 2 is suitable for sucking the gas in the second cavity to the helium detector for helium concentration detection.
[0029] That is to say, the upper pressure plate 1 is in contact with the upper part of the cover plate to form a first cavity, and the suction component 2 is in contact with the lower part of the cover body 3 to form a second cavity. Helium is introduced into the first cavity from the first vent hole 11 to contact the cover body 3, so that the helium fills the first cavity and contacts the upper part of the cover body 3. The suction component 2 keeps the second cavity inhaled, so that if there is a tear in the cover body 3, the helium in the first cavity can quickly pass through the tear into the second cavity, and then be pumped from the second cavity to the helium detector, and the helium detector detects After helium is detected, the cover body 3 is judged to be unqualified. If the helium detector does not detect helium, the cover body 3 is judged to be qualified. Through the setting of the second through hole, other gases and helium in the first cavity can be discharged from the second vent hole 12, which not only increases the helium concentration in the first cavity, but also reduces the air pressure in the first cavity, avoiding the helium leaking from the joint between the pressure plate and the cover body 3 due to excessive pressure in the first cavity and then entering the second cavity from the joint between the cover body 3 and the suction component 2, causing false detection.
[0030] Thus, helium is introduced into the first cavity formed by the upper pressing plate 1 and the upper part of the cover body 3, so that the helium evacuates other gases in the first cavity and fills it with helium and contacts the cover body 3, and the second cavity formed between the suction component 2 and the lower part of the cover body 3 is vacuumed by the suction component 2, so that the helium in the first cavity can quickly pass through the cover body 3 with a torn crack and enter the helium detector through the second cavity, so as to judge the airtightness of the cover body 3. The helium sealing detection device has a simple structure, can discharge other gases in the original cavity, improve the helium concentration, ensure the detection accuracy, and can prevent the leakage of helium in the sealed cavity to avoid false detection.
[0031] For the placement of the cover 3, the suction assembly 2 includes a carrier plate 21 and an adsorbent 22. The carrier plate 21 is suitable for placing the cover 3. The carrier plate 21 is provided with a third vent 211. The third vent 211 is connected to the second cavity. The adsorbent 22 abuts against the third vent 211 to absorb the gas in the second cavity to the helium detector for helium concentration detection. It can be understood that the carrier plate 21 can facilitate the placement of the cover 3, thereby supporting the cover 3, facilitating the formation of a seal at the abutment between the upper pressing plate 1 and the cover 3, and facilitating the passage of helium from the first vent 11 into the first cavity; the third vent 211 is provided so that the second cavity is connected to the third vent 211, so that the adsorbent 22 aspirates the second cavity through the third vent 211, so that the second cavity is in a vacuum state, so that the helium passes through the gap of the unqualified cover 3 and is detected by the helium detector. A sealing member may be provided at the joint between the carrying plate 21 and the cover body 3 to facilitate sealing of the second cavity.
[0032] As for the upper pressing plate 1, the upper pressing plate 1 has a first abutting portion 13 and a second abutting portion 14, the first abutting portion 13 is suitable for abutting the bearing plate 21, the second abutting portion 14 is suitable for abutting the upper part of the cover body 3, and the first vent hole 11 and the second vent hole 12 are arranged on the second abutting portion 14. It can be understood that by the second abutting portion 14 abutting the upper part of the cover body 3, it is convenient to apply pressure to the cover body 3, so that the cover body 3 is closely attached to the bearing plate 21, so that a sealed isolation is formed between the first cavity and the second cavity, and by the first abutting portion 13 abutting on the bearing plate 21, it is convenient to form a seal at the abutment between the upper pressing plate 1 and the bearing plate 21, so that the upper part of the cover body 3 can be covered in the first cavity filled with helium, which is convenient for a more comprehensive airtightness test of the cover body 3. Among them, the first abutting portion 13 can be made of sealing materials such as silicone or rubber, and there is a height difference between the first abutting portion 13 and the second abutting portion 14, which can be specifically arranged according to the structure of the cover body 3.
[0033] As for the positions of the first vent hole 11 and the second vent hole 12, the first vent hole 11 is arranged adjacent to the second vent hole 12. It can be understood that by arranging the first vent hole 11 adjacent to the second vent hole 12, it is convenient for helium to enter from the first vent hole 11 and other gases in the first cavity to be quickly and completely discharged from the second vent hole 12, thereby increasing the concentration of helium and further improving the accuracy of detection. Among them, the diameter of the first vent hole 11 is greater than the diameter of the second vent hole 12.
[0034] For the lifting and lowering of the upper pressing plate 1, the upper pressing plate 1 includes a first lifting driving member 15, and the first lifting driving member 15 is connected to the upper pressing plate 1 to drive the upper pressing plate 1 to approach or move away from the upper part of the cover body 3. It can be understood that the upper pressing plate 1 is driven to move up and down by the first lifting driving member 15, so as to facilitate the conversion of the upper pressing plate 1 between the working position and the avoidance position, thereby facilitating the loading of the cover body 3 and the unloading of the material after detection. Among them, the first lifting driving member 15 can be a cylinder structure, and the upper pressing plate 1 is provided with a connecting portion connected to the output end of the cylinder, and the first vent hole 11 and the second vent hole 12 can be provided at the connecting portion, so as to facilitate the centralized processing of the upper pressing plate 1.
[0035] As for the carrier plate 21, a plurality of covers 3 are placed on the carrier plate 21, and the carrier plate 21 can be rotatably arranged to transfer each cover 3 to between the upper pressing plate 1 and the adsorbent 22. It can be understood that the rotatable arrangement of the carrier plate 21 can facilitate the rotation switching between the multiple covers 3 placed on the carrier plate 21, thereby improving the loading and detection efficiency of the covers 3. Among them, the carrier plate 21 can be arranged in a disc shape, and multiple helium sealing detection stations can also be arranged to simultaneously detect the multiple covers 3 on the carrier plate 21.
[0036] For the abutment of the adsorbent 22, the suction assembly 2 includes a second lifting drive 23, which is connected to the adsorbent 22 to drive the adsorbent 22 to abut or move away from the third vent 211. It can be understood that the adsorbent 22 is driven to move up and down by the second lifting drive 23, so that the adsorbent 22 is switched between the working position and the avoidance position, which is convenient for the rotation of the carrier plate 21 to realize the loading and unloading of the cover body 3, and at the same time, the abutment force between the adsorbent 22 and the third vent 211 is made larger, which is convenient for the sealing of the second cavity. Among them, the second lifting drive 23 can be a cylinder structure.
[0037] For the sealing between the adsorbent 22 and the carrier plate 21, a sealing pad 4 is also included, and the sealing pad 4 has a fourth vent hole 41. When the adsorbent 22 is close to the third vent hole 211, the adsorbent 22 abuts the sealing pad 4 against the carrier plate 21, and the third vent hole 211 is connected to the fourth vent hole 41. It can be understood that by setting the sealing pad 4, the sealing between the adsorbent 22 and the carrier plate 21 can be strengthened, so that the adsorbent 22 has a greater suction force when sucking air into the second cavity. Among them, the sealing pad 4 can be set independently or connected with the adsorbent 22.
[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0040] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.
[0043] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A helium leak detection device, characterized in that: include: Upper pressure plate and suction assembly; The upper pressing plate has a first vent hole and a second vent hole. The upper pressing plate can be raised and lowered to abut against the upper part of the cover body, so that a first cavity is formed between the upper part of the cover body and the upper pressing plate. The first vent hole is connected to the first cavity so that helium is passed into the first cavity from the first vent hole. The second vent hole is connected to the first cavity so that the helium in the first cavity is discharged from the second vent hole. The air suction component is connected to a helium detector, and the air suction component abuts against the lower part of the cover body to form a second cavity with the lower part of the cover body. The air suction component is suitable for sucking the gas in the second cavity to the helium detector for helium concentration detection.
2. The helium leak detection device according to claim 1, characterized in that: The suction component includes a supporting plate and an adsorbent, the supporting plate is suitable for placing the cover body, the supporting plate is provided with a third vent hole, the third vent hole is connected to the second cavity, and the adsorbent abuts against the third vent hole to absorb the gas in the second cavity to the helium detector for helium concentration detection.
3. The helium leak detection device according to claim 2, characterized in that: The upper pressing plate has a first abutting portion and a second abutting portion, the first abutting portion is suitable for abutting the supporting plate, the second abutting portion is suitable for abutting the upper portion of the cover body, and the first vent hole and the second vent hole are arranged in the second abutting portion.
4. The helium leak detection device according to claim 1, characterized in that: The first ventilation hole is arranged adjacent to the second ventilation hole.
5. The helium leak detection device according to claim 1, characterized in that: The upper pressing plate includes a first lifting driving member, and the first lifting driving member is connected to the upper pressing plate to drive the upper pressing plate to approach or abut against the upper portion of the cover body.
6. The helium leak detection device according to claim 2, characterized in that: A plurality of covers are placed on the carrying plate, and the carrying plate can be rotatably arranged to transfer each cover to between the upper pressing plate and the adsorption member.
7. The helium leak-tightness detection device according to claim 2, characterized in that: The suction component includes a second lifting driving member, and the second lifting driving member is connected to the adsorption member to drive the adsorption member to approach or abut against the third ventilation hole.
8. The helium leak detection device according to claim 2, characterized in that: It also includes a sealing pad having a fourth vent hole. When the adsorbent is close to the third vent hole, the adsorbent abuts the sealing pad against the supporting plate, and the third vent hole is connected to the fourth vent hole.