A device for detecting the airtightness of canned food

Abstract

This utility model relates to the field of canned food airtightness testing technology, and in particular to a canned food airtightness testing device, including a processing table, a rotating platform mounted on the processing table via a rotating shaft, a rotating drive mechanism at the bottom of the processing table, multiple placement slots around the rotating shaft on the rotating platform, a mounting frame mounted on the processing table, a cylinder mounted on the mounting frame, an arc-shaped lifting plate driven by the cylinder, multiple sealing covers fixedly connected to the bottom of the arc-shaped lifting plate, a gas distribution block fixedly mounted on the mounting frame, an air pump connected to the gas distribution block via an air inlet main pipe, multiple air outlet telescopic branch pipes connected to the gas distribution block, pressure regulating valves and on / off valves mounted on the air outlet telescopic branch pipes, a pressure sensor mounted on the inner wall of the sealing cover, and a control display screen mounted on the mounting frame; this utility model can simultaneously perform airtightness testing on multiple cans, improving testing efficiency and meeting the full inspection requirements of mass production.

Description

Technical Field

[0001] This utility model relates to the field of canned food airtightness testing technology, and more specifically to a canned food airtightness testing device. Background Technology

[0002] In the food industry, canned goods are a common packaging form for meat, fruits, and vegetables due to their excellent sealing properties and long shelf life. The airtightness of canned goods is a core element in ensuring the quality of the food inside. If the airtightness is not up to standard, external microorganisms, air, and moisture can penetrate the can, causing food spoilage. This not only affects the commercial value of the product but may also harm consumers' health. Therefore, airtightness testing of canned goods is an indispensable part of the production process.

[0003] Currently, canned food manufacturers primarily use sampling inspection when testing the airtightness of finished canned goods. This method typically involves randomly selecting a portion of the canned goods produced in large batches for testing, and then using the test results of these samples to infer the airtightness quality of the entire batch.

[0004] However, sampling inspection has certain limitations. Since only a portion of samples are tested, substandard products may be missed, making comprehensive control of all products impossible and posing a certain quality risk. This is especially true for mass-produced canned goods; even with a low failure rate, undetected substandard products entering the market can still negatively impact consumers and damage the company's brand reputation. Furthermore, some sampling inspection methods are destructive, meaning the tested samples cannot be reintroduced into the market, resulting in resource waste. Utility Model Content

[0005] The purpose of this invention is to provide a can airtightness testing device that can simultaneously test the airtightness of multiple cans, thereby improving testing efficiency and meeting the full inspection requirements of mass production.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A device for testing the airtightness of canned goods includes a processing table. A rotating platform is rotatably mounted on the upper surface of the processing table via a rotating shaft. A rotation drive mechanism for driving the rotating platform is located at the bottom of the processing table. Multiple placement slots are formed around the rotating shaft on the rotating platform. A mounting frame is mounted on the processing table, and a cylinder is mounted on the mounting frame. The piston rod of the cylinder drives an arc-shaped lifting plate. Multiple sealing covers are fixedly connected to the bottom of the arc-shaped lifting plate, and the sealing covers are positioned corresponding to the placement slots. The mounting frame is fixedly equipped with... The device is equipped with an air distribution block. The air inlet of the air distribution block is connected to an air pump via an air inlet main pipe. The air outlet of the air distribution block is connected to multiple air outlet telescopic branch pipes, each corresponding to a sealing cover. The air outlet telescopic branch pipes are connected to the sealing cover. A pressure regulating valve and an on / off valve are installed on the air outlet telescopic branch pipes. A pressure sensor is installed on the inner wall of the sealing cover. A control display screen is installed on the mounting bracket. The cylinder, air pump, pressure regulating valve, on / off valve, and pressure sensor are all electrically connected to the control display screen.

[0008] Furthermore, the rotary drive mechanism includes a placement frame installed at the bottom of the processing table, a rotary motor mounted on the placement frame, a drive gear driven by the rotary motor, and a driven gear coaxially fixedly connected to the bottom of the rotating shaft, with the drive gear meshing with the driven gear.

[0009] Furthermore, a rubber sealing ring is provided at the bottom edge of the sealing cover.

[0010] Furthermore, the sealing cover is provided with an exhaust pipe, and the exhaust pipe is provided with a solenoid valve.

[0011] Furthermore, the inner diameter of the sealing cover is larger than the inner diameter of the placement groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This application utilizes a rotating platform with multiple placement slots to achieve continuous conveying and inspection of canned goods. Combined with a cylinder-driven arc-shaped lifting plate on the mounting frame and multiple sealing covers at the bottom, it can simultaneously perform airtightness testing on multiple cans, significantly improving inspection efficiency and meeting the full inspection requirements of mass production. By employing a gas distribution block, an outlet telescopic branch pipe, related valves, and a pressure sensor, combined with the pressure attenuation method, the airtightness of the cans can be accurately detected. Furthermore, the entire testing process is non-destructive, avoiding resource waste. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0015] Figure 2This is a schematic diagram of the structure of the present invention. Figure 2 .

[0016] 1. Processing table; 2. Rotary shaft; 3. Rotary table; 301. Placement slot; 4. Mounting bracket; 5. Cylinder; 6. Arc-shaped lifting plate; 7. Sealing cover; 8. Air distribution block; 9. Main intake pipe; 10. Exhaust telescopic branch pipe; 11. Pressure regulating valve; 12. On / off valve; 13. Control display screen; 14. Placement bracket; 15. Rotary motor; 16. Drive gear; 17. Driven gear; 18. Rubber sealing ring; 19. Exhaust pipe; 20. Solenoid valve. Detailed Implementation

[0017] like Figure 1 and Figure 2 As shown, a can airtightness testing device includes a processing table 1. A rotating platform 3 is rotatably mounted on the upper surface of the processing table 1 via a rotating shaft 2. A rotation drive mechanism for driving the rotating platform 3 to rotate is provided at the bottom of the processing table 1. Multiple placement slots 301 are formed around the rotating shaft 2 on the rotating platform 3. A mounting frame 4 is mounted on the processing table 1. A cylinder 5 is mounted on the mounting frame 4. The piston rod of the cylinder 5 drives and connects to an arc-shaped lifting plate 6. Multiple sealing covers 7 are fixedly connected to the bottom of the arc-shaped lifting plate 6. The sealing covers 7 are arranged corresponding to the placement slots 301. The mounting frame 4 is fixedly mounted with... There is an air distribution block 8. The air inlet end of the air distribution block 8 is connected to an air pump through an air inlet main pipe 9. The air outlet end of the air distribution block 8 is connected to multiple air outlet telescopic branch pipes 10. Each air outlet telescopic branch pipe 10 corresponds to a sealing cover 7. The air outlet telescopic branch pipe 10 is connected to the sealing cover 7. A pressure regulating valve 11 and an on / off valve 12 are installed on the air outlet telescopic branch pipe 10. A pressure sensor is installed on the inner side wall of the sealing cover 7. A control display screen 13 is set on the mounting bracket 4. The cylinder 5, the air pump, the pressure regulating valve 11, the on / off valve 12 and the pressure sensor are all electrically connected to the control display screen 13.

[0018] The rotary drive mechanism includes a placement frame 14 installed at the bottom of the processing table 1. A rotary motor 15 is installed on the placement frame 14. The rotary motor 15 is driven by a drive gear 16. A driven gear 17 is coaxially fixedly connected to the bottom of the rotating shaft 2. The drive gear 16 meshes with the driven gear 17.

[0019] The bottom edge of the sealing cover 7 is provided with a rubber sealing ring 18; the rubber sealing ring 18 can enhance the sealing between the sealing cover 7 and the rotating table 3, avoid air leakage during the detection process, improve the accuracy of pressure detection, and reduce misjudgment caused by poor sealing.

[0020] The sealing cover 7 is provided with an exhaust pipe 19, and the exhaust pipe 19 is provided with a solenoid valve 20; after the test is completed, the gas in the sealing cover 7 can be quickly discharged through the exhaust pipe 19, which facilitates the separation of the sealing cover 7 from the rotating table 3.

[0021] The inner diameter of the sealing cover 7 is larger than the inner diameter of the placement groove 301.

[0022] Working principle:

[0023] When the can airtightness testing device is in operation, the rotary motor 15 first drives the drive gear 16 to rotate. The drive gear 16 and the driven gear 17 mesh, driving the rotary table 3 to rotate and feeding the cans to be tested one by one into the placement slot 301. When the rotary table 3 rotates to the testing position, the cylinder 5 drives the arc-shaped lifting plate 6 to descend, so that multiple sealing covers 7 are respectively fastened to the cans in the placement slot 301, and the rubber sealing ring 18 ensures that the two are well sealed. Subsequently, the air pump supplies air to the air distribution block 8 through the air inlet main pipe 9. The air distribution block 8 distributes the gas to each sealing cover 7 through the air outlet telescopic branch pipe 10. The pressure regulating valve 11 adjusts the gas pressure entering the sealing cover 7 to the set value, and the on / off valve 12 closes to maintain the pressure inside the sealing cover 7. The air pressure sensor monitors the pressure change inside the sealing cover 7 in real time and transmits the data to the control display screen 13. According to the pressure decay method, if the can is airtight, the pressure inside the sealing cover 7 will not decrease significantly within a set time. If the can leaks, the pressure inside the sealing cover 7 will gradually decrease over time. When the pressure sensor detects that the pressure decay value exceeds the set threshold, the control display screen 13 will issue an alarm and record the location of the defective can. After the test is completed, the solenoid valve 20 opens, the exhaust pipe 19 discharges the gas from the sealing cover 7, the cylinder 5 drives the arc-shaped lifting plate 6 to rise, the sealing cover 7 separates from the rotating table 3, the rotating table 3 continues to rotate, sending out the tested can and simultaneously sending a new can to be tested into the testing position, thus achieving continuous testing.

[0024] This invention enables continuous conveying of canned goods through a rotating table 3, and can simultaneously inspect multiple cans by combining multiple sealing covers 7, greatly improving inspection efficiency and meeting the full inspection requirements of mass production. It also solves the problem that traditional sampling inspection may miss unqualified products.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the airtightness of canned food, characterized in that: The system includes a processing table (1), on the upper surface of which a rotary table (3) is rotatably mounted via a rotating shaft (2). A rotary drive mechanism for driving the rotary table (3) is located at the bottom of the processing table (1). Multiple placement slots (301) are formed around the rotating shaft (2) on the rotary table (3). A mounting frame (4) is installed on the processing table (1), and a cylinder (5) is mounted on the mounting frame (4). The piston rod of the cylinder (5) is connected to an arc-shaped lifting plate (6). Multiple sealing covers (7) are fixedly connected to the bottom of the arc-shaped lifting plate (6), and the sealing covers (7) are positioned corresponding to the placement slots (301). An air distribution block (8) is fixedly mounted on the mounting frame (4). The air inlet of the air distribution block (8) is connected to an air pump via an air inlet main pipe (9). The air outlet of the air distribution block (8) is connected to multiple air outlet telescopic branch pipes (10). Each air outlet telescopic branch pipe (10) corresponds to a sealing cover (7). Each air outlet telescopic branch pipe (10) is connected to the sealing cover (7). A pressure regulating valve (11) and an on / off valve (12) are installed on the air outlet telescopic branch pipe (10). A pressure sensor is installed on the inner wall of the sealing cover (7). A control display screen (13) is installed on the mounting bracket (4). The cylinder (5), air pump, pressure regulating valve (11), on / off valve (12), and pressure sensor are all electrically connected to the control display screen (13).

2. The canned food airtightness testing device as described in claim 1, characterized in that: The rotary drive mechanism includes a placement frame (14) installed at the bottom of the processing table (1), a rotary motor (15) is installed on the placement frame (14), the rotary motor (15) is driven by a drive gear (16), and a driven gear (17) is coaxially fixedly connected to the bottom of the rotating shaft (2), the drive gear (16) meshes with the driven gear (17).

3. The canned food airtightness testing device as described in claim 1, characterized in that: A rubber sealing ring (18) is provided at the bottom edge of the sealing cover (7).

4. The canned food airtightness testing device as described in claim 1, characterized in that: An exhaust pipe (19) is provided on the sealing cover (7), and a solenoid valve (20) is provided on the exhaust pipe (19).

5. The canned food airtightness testing device as described in claim 1, characterized in that: The inner diameter of the sealing cover (7) is larger than the inner diameter of the placement groove (301).

Images