Airtightness detection device for bamboo shoot cans
By designing an airtightness testing device that includes a base, column, mounting plate, and testing components, the problems of high cost and complex operation in airtightness testing of bamboo shoot cans have been solved, achieving low-cost and high-precision airtightness testing, which is suitable for small businesses and individual users.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANNING COUNTY LIUYI FOOD CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-06-12
AI Technical Summary
Existing airtightness testing devices for canned bamboo shoots are costly and complex to operate, making them difficult for small businesses or individual users to widely adopt. The test results are inaccurate or the equipment is easily damaged.
An airtightness testing device was designed, comprising a base, a column, a mounting plate, and a testing component. The device uses a cylinder to push a piston and a connecting plate to insert bamboo shoot cans into a cylinder, and uses a pressure sensor to determine the airtightness, thus reducing the reliance on high-precision sensors.
It reduces manufacturing costs, simplifies operating procedures, and improves testing accuracy and reliability, making it suitable for small businesses and individual users.
Smart Images

Figure CN224354037U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of airtightness testing technology for canned bamboo shoots, specifically to an airtightness testing device for canned bamboo shoots. Background Technology
[0002] The airtightness testing device for canned bamboo shoots is used to test the sealing performance of canned bamboo shoots to ensure that the food will not spoil due to air leakage during storage and transportation.
[0003] While current airtightness testing devices used in bamboo shoot canning can meet production needs to a certain extent, they do have some shortcomings, especially with larger devices. Due to the use of high-precision sensors and advanced technology, the manufacturing cost of these devices is relatively high, which may be unaffordable for some small businesses or individual users. Furthermore, the operation and maintenance of these devices require certain technical knowledge and experience. If operators lack professional training or relevant experience, inaccurate test results or equipment damage may occur. This increases labor and time costs. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides an airtightness testing device for canned bamboo shoots, solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an airtightness testing device for canned bamboo shoots, comprising a base, two columns, a mounting plate, and a testing component;
[0006] Both columns are vertically mounted on the base, the mounting plate is disposed on the upper end face of the two columns, and the detection component is mounted on the base;
[0007] The detection assembly includes a cylinder mounted on the base, a pressure sensor communicating with the cylinder is provided on the base, a cylinder is mounted on the upper surface of the mounting plate, a piston is drivenly connected to the output end of the cylinder, and the piston is slidably connected inside the cylinder.
[0008] A ring is attached to the upper end face of the piston, and connecting plates are installed on both the left and right sides of the lower end face of the ring. The lower end faces of the two connecting plates are fitted with the same placement plate.
[0009] Furthermore, the cross-sectional shape of the upper end face of the connecting plate is arc-shaped and fits against the inner wall of the cylinder.
[0010] Furthermore, arc-shaped grooves adapted to the two connecting plates are respectively opened on the left and right sides of the outer surface of the piston.
[0011] Furthermore, the outer diameter of the piston is adapted to the inner diameter of the cylinder.
[0012] Furthermore, several vent holes are provided inside the placement plate.
[0013] Furthermore, the axial line of the cylinder and the axial line of the cylinder are located on the same vertical line.
[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0015] 1. This airtightness testing device for bamboo shoot canned goods, through optimized design, reduces reliance on high-precision sensors and advanced technologies while maintaining testing accuracy, thereby helping to reduce manufacturing costs. This provides a more economical and feasible airtightness testing solution for small businesses or individual users.
[0016] 2. This airtightness testing device for canned bamboo shoots works by placing the canned bamboo shoots securely on a placement plate, then activating a cylinder. The cylinder's output end extends, pushing a piston and causing the connecting plate and the placement plate carrying the canned bamboo shoots to move downwards. During this process, the placement plate and the canned bamboo shoots extend smoothly into the cylinder, while the piston precisely inserts into the cylinder. The cylinder's output end then continues to extend, causing the piston to slide smoothly on the outside of the two connecting plates, applying pressure to the inside of the cylinder. By observing the changes in the pressure sensor readings, the airtightness of the canned bamboo shoots can be accurately determined. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the detection component structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the internal structure of the cylinder of this utility model.
[0020] In the diagram: 1. Base; 2. Column; 3. Mounting plate; 4. Detection component; 401. Cylinder; 402. Pressure sensor; 403. Cylinder; 404. Piston; 405. Ring; 406. Connecting plate; 407. Placement plate. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.
[0022] Please see Figure 1 This embodiment provides an airtightness testing device for canned bamboo shoots, used to test the airtightness of canned bamboo shoots.
[0023] Specifically, it includes a base 1, two columns 2, a mounting plate 3, and a detection component 4; the two columns 2 are vertically mounted on the base 1, the mounting plate 3 is set on the upper surface of the two columns 2, and the detection component 4 is mounted on the base 1.
[0024] In actual use, the bamboo shoot cans are placed inside the detection component 4, and the airtightness of the bamboo shoot cans is detected by the detection component 4. The change in air pressure value is used to determine the airtightness of the bamboo shoot cans.
[0025] Please see Figure 2-3 In order to detect the airtightness of bamboo shoot cans, the detection component 4 in this embodiment includes a cylinder 401 installed on the base 1, a pressure sensor 402 connected to the cylinder 401 on the base 1, a cylinder 403 installed on the upper surface of the mounting plate 3, and a piston 404 drivenly connected to the output end of the cylinder 403. The piston 404 is slidably connected inside the cylinder 401.
[0026] A ring 405 is attached to the upper end face of the piston 404. A connecting plate 406 is installed on both the left and right sides of the lower end face of the ring 405. The lower end face of the two connecting plates 406 is fitted with the same placement plate 407.
[0027] In actual use, the canned bamboo shoots are placed on the placement plate 407. The extension of the output end of the cylinder 403 pushes the piston 404, the connecting plate 406, and the placement plate 407 downward, so that the placement plate 407 and the canned bamboo shoots on it extend into the interior of the cylinder 401. At the same time, the piston 404 is inserted into the interior of the cylinder 401. At this time, the output end of the cylinder 403 continues to extend, and the piston 404 slides on the outside of the two connecting plates 406, while squeezing the interior of the cylinder 401. The airtightness of the canned bamboo shoots is judged by the value on the pressure sensor 402.
[0028] Specifically, if the pressure sensor 402 continuously increases during the extension of piston 404, it indicates that the bamboo shoot can is airtight. If the pressure sensor 402 changes slowly during the extension of piston 404, it indicates that the bamboo shoot can is airtight, meaning that there is a leak in some part of the bamboo shoot can.
[0029] Furthermore, in order to increase the sealing between the piston 404 and the connecting plate 406, the upper end face of the connecting plate 406 in this embodiment has an arc shape and fits against the inner wall of the cylinder 401. Arc-shaped grooves adapted to the two connecting plates 406 are respectively opened on the left and right sides of the outer surface of the piston 404, and the outer diameter of the piston 404 is adapted to the inner diameter of the cylinder 401.
[0030] In actual use, the arc-shaped design of the connecting plate 406 fits snugly against the inner wall of the cylinder 401, and the arc-shaped groove on the outer surface of the piston 404 matches the connecting plate 406. These features effectively reduce the gap between the connecting plate 406, the piston 404, and the cylinder 401, thereby enhancing their sealing performance and preventing gas leakage.
[0031] Moreover, the outer diameter of piston 404 is matched with the inner diameter of cylinder 401, which ensures smooth sliding of piston 404 in cylinder 401, and also helps to maintain a good sealing effect and reduce friction and leakage problems caused by size mismatch.
[0032] Furthermore, in order to ensure that the output end of the cylinder 403 can accurately move the piston 404 into the interior of the cylinder 401 when it extends, the axial line of the cylinder 401 and the axial line of the cylinder 403 in this embodiment are located on the same vertical line.
[0033] In addition, in order to ensure that the placement plate 407 can effectively extend into the interior of the cylinder 401, several vent holes are provided inside the placement plate 407 in this embodiment. The vent holes effectively improve the smoothness of the placement plate 407 during the extension process and prevent the value on the pressure sensor 402 from changing when the placement plate 407 extends.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An airtightness testing device for canned bamboo shoots, characterized in that: It includes a base (1), two columns (2), a mounting plate (3), and a detection component (4); Both columns (2) are vertically mounted on the base (1), the mounting plate (3) is set on the upper end face of the two columns (2), and the detection component (4) is mounted on the base (1); The detection component (4) includes a cylinder (401) mounted on the base (1), a pressure sensor (402) communicating with the cylinder (401) is provided on the base (1), a cylinder (403) is mounted on the upper surface of the mounting plate (3), a piston (404) is drivenly connected to the output end of the cylinder (403), and the piston (404) is slidably connected inside the cylinder (401); A ring (405) is attached to the upper end face of the piston (404), and connecting plates (406) are installed on both the left and right sides of the lower end face of the ring (405). The lower end faces of the two connecting plates (406) are fitted with the same placement plate (407).
2. The airtightness testing device for canned bamboo shoots according to claim 1, characterized in that: The upper end face of the connecting plate (406) has an arc-shaped cross-section and is in contact with the inner wall of the cylinder (401).
3. The airtightness testing device for canned bamboo shoots according to claim 2, characterized in that: Arc-shaped grooves adapted to the two connecting plates (406) are respectively opened on the left and right sides of the outer surface of the piston (404).
4. The airtightness testing device for canned bamboo shoots according to claim 1, characterized in that: The outer diameter of the piston (404) is adapted to the inner diameter of the cylinder (401).
5. The airtightness testing device for canned bamboo shoots according to claim 1, characterized in that: Several vent holes are provided inside the placement plate (407).
6. The airtightness testing device for canned bamboo shoots according to claim 1, characterized in that: The axial line of the cylinder (401) and the axial line of the cylinder (403) are on the same vertical line.