Puffed food detection device

Abstract

The utility model belongs to the technical field of puffed food sealing performance detection, and particularly relates to a puffed food detection device which comprises a detector main body, a pressure sensor arranged on the top of the inner wall of the detector main body, a PLC (Programmable Logic Controller) arranged on the detector main body, and a display screen arranged on the detector main body, a first magnetic sheet is mounted on the upper surface of the detector main body; after the air pump and the first air delivery pipe deliver air inwards to expand, the hollow sealing strip can automatically fill tiny unevenness between the cover plate and the detection cavity, so that the leakage probability is reduced, the test cavity and the external environment can be thoroughly isolated, and the detection result is prevented from being influenced by ambient air pressure fluctuation or temperature change; the three damping pads are attached to each other, so that the interior of the connecting pipe can be sealed, leakage of gas in the hollow sealing strip in the detection process is avoided, the sealing degree of the detection device is improved, and the detection accuracy of puffed food is improved.

Description

Technical Field

[0001] This utility model belongs to the field of puffed food sealing test technology, specifically a puffed food testing device. Background Technology

[0002] Puffed foods must undergo strict sealing tests during the production process. This is achieved by using a sealing tester to check the sealing of puffed foods. By simulating pressure changes during transportation and storage or directly detecting leaks, the tester can determine whether there are air leaks, micropores, or sealing defects in the packaging. This is necessary to ensure the product's shelf life and crisp texture, thus requiring a puffed food testing device.

[0003] Existing puffed food sealing testers include: a test chamber, a vacuum pump, a sensor, a sealing fixture, and a controller. The process involves checking the accuracy of the pressure sensor, ensuring the vacuum pump is operating normally, setting the test parameters, placing the puffed food packaging into the test chamber, ensuring the sealing area is completely covered, starting the vacuum pump to evacuate to the set pressure, maintaining the vacuum state, and observing whether the pressure rises. Stable pressure indicates no leakage, while a rise in pressure indicates leakage, thus completing the test for the sealing performance of the puffed food.

[0004] However, existing devices still have some problems. The sealing degree between the sealing cap and the inner wall of the cavity is determined solely by the friction between the two sides. The cavity is slightly deformed due to long-term use, which leads to a decrease in the sealing degree during the detection process, and consequently a decrease in the accuracy of the detection data. Therefore, a puffed food detection device is proposed to address the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing technologies and address the problems of existing equipment, this utility model proposes a puffed food detection device.

[0006] The technical solution adopted by this utility model to solve its technical problem is a puffed food detection device, comprising: a detector body, a pressure sensor installed on the top of the inner wall of the detector body, a PLC controller installed on the detector body, a display screen installed on the detector body, a first magnetic sheet installed on the upper surface of the detector body, a detection cavity placed on the detector body, a second magnetic sheet fixedly connected inside the detection cavity, the first magnetic sheet and the second magnetic sheet attracting each other, a hollow sealing strip fixedly connected to the inner wall of one end of the detection cavity, a connecting pipe fixedly connected to one side of the hollow sealing strip, the connecting pipe passing through one side of the detection cavity, a first gas supply pipe threaded inside the connecting pipe, an air pump installed at one end of the first gas supply pipe, and a first rubber ring fixedly connected to one end of the connecting pipe, the first rubber ring being in contact with one side of the first gas supply pipe. After the detection cavity is placed on the detector body, the first magnetic sheet and the second magnetic sheet attract each other, thereby fixing the detection cavity on the detection body and improving the stability of the detection process.

[0007] Preferably, the inner wall of the connecting pipe is hinged with three sets of baffles, and an elastic sheet is fixedly connected to one side of each of the three sets of baffles. One end of the elastic sheet is installed on the inner wall of the connecting pipe, and a damping pad is fixedly connected to the outer side of each of the three sets of baffles. The three sets of damping pads are in contact with each other, which can improve the sealing between the three sets of baffles and thus prevent gas from flowing through the hollow sealing strip.

[0008] Preferably, the opening end of the detection cavity is movably connected to a cover plate, the cover plate has an insertion hole, a second rubber ring is fixedly connected to the outside of the insertion hole, and a second gas supply pipe is movably connected to the inside of the insertion hole. The second gas supply pipe is inserted into the insertion hole so that its outer side is in contact with the inner wall of the second rubber ring, thereby improving the tightness of the connection between the two and preventing external gas from entering the interior of the detection cavity from between the second gas supply pipe and the insertion hole.

[0009] Preferably, a vacuum pump is installed at one end of the second gas supply pipe, the hollow sealing strip is attached to one side of the cover plate, a connecting rod is fixedly connected to the lower surface of the cover plate, and a connecting frame is fixedly connected to one end of the connecting rod. When the cover plate is placed on top of the detection chamber, the connecting frame and the filter screen can be placed at the bottom of the detection chamber through the connecting rod.

[0010] Preferably, a filter screen is installed on the connecting frame, a support plate is fixedly connected to the connecting rod, and a pressure plate is threadedly connected to the support plate. The bagged puffed food is located in water and floats upward due to the gas inside. Due to the obstruction of the pressure plate, it floats in the clear water, which allows the sealing performance of the bagged puffed food to be tested.

[0011] Preferably, the PLC controller is used to control the start and stop of the display screen, air pump, pressure sensor and vacuum pump. The PLC controller collects and analyzes the data from the pressure sensor and transmits the data to the display screen for display. By controlling the display screen, air pump, pressure sensor and vacuum pump through the PLC controller, the ease of use of the detection device is improved.

[0012] The advantages of this invention are as follows: After the hollow sealing strip expands due to the air pump and the first air supply pipe, it can automatically fill the slight unevenness between the cover plate and the detection chamber, thereby reducing the probability of leakage. It can completely isolate the test chamber from the external environment, avoiding the influence of environmental air pressure fluctuations or temperature changes on the test results. Furthermore, due to the elasticity of the elastic sheet itself, the three sets of damping pads are in contact, which can seal the inside of the connecting pipe, preventing the gas inside the hollow sealing strip from leaking during the detection process. This improves the sealing degree of the detection device and thus improves the accuracy of the detection of puffed food.

[0013] This invention employs a filter screen that moves upward to remove suspended particles in the water and the bagged puffed food after testing. This eliminates the need to separately clean the water inside the testing device during the testing process, allowing subsequent testing to proceed immediately. This reduces downtime of the testing device and improves the efficiency of testing the airtightness of bagged puffed food. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure;

[0016] Figure 2 This is a schematic diagram of the cross-section of the inspection cavity;

[0017] Figure 3 This is a schematic diagram of the cross-section of the connecting pipe;

[0018] Figure 4 This is a schematic diagram of the material clearing assembly;

[0019] Figure 5 This is a schematic diagram of the cross-section of the pressure plate.

[0020] In the diagram: 1. Detector body; 2. PLC controller; 3. Display screen; 4. First magnetic sheet; 5. Detection cavity; 6. Second magnetic sheet; 7. Hollow sealing strip; 8. Connecting pipe; 9. First air supply pipe; 10. Air pump; 11. First rubber ring; 12. Baffle; 13. Elastic sheet; 14. Cover plate; 15. Insertion hole; 16. Second rubber ring; 17. Connecting rod; 18. Connecting frame; 19. Filter screen; 20. Support plate; 21. Pressure plate; 22. Damping pad. 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 scope of protection of the present utility model.

[0022] Please see Figure 1-5 As shown, a puffed food detection device includes: a detector body 1, a pressure sensor mounted on the top of the inner wall of the detector body 1, a PLC controller 2 (model S7-1200) mounted on the detector body 1, a display screen 3 mounted on the detector body 1, a first magnetic sheet 4 mounted on the upper surface of the detector body 1, a detection cavity 5 placed on the detector body 1, a second magnetic sheet 6 fixedly connected inside the detection cavity 5, the first magnetic sheet 4 and the second magnetic sheet 6 attracting each other, and a hollow sealing strip 7 fixedly connected to the inner wall of one end of the detection cavity 5. A connecting pipe 8 is fixedly connected to one side of the hollow sealing strip 7. The connecting pipe 8 passes through one side of the detection chamber 5. A first air supply pipe 9 is threadedly connected inside the connecting pipe 8. An air pump 10 is installed at one end of the first air supply pipe 9. A first rubber ring 11 is fixedly connected to one end of the connecting pipe 8. The first rubber ring 11 is in contact with one side of the first air supply pipe 9. Three sets of baffles 12 are hinged to the inner wall of the connecting pipe 8. An elastic sheet 13 is fixedly connected to one side of the three sets of baffles 12. One end of the elastic sheet 13 is installed on the inner wall of the connecting pipe 8. Damping pads 22 are fixedly connected to the outer sides of the three sets of baffles 12.

[0023] During the production of puffed foods, strict sealing tests must be conducted to determine whether the packaging has leaks, micropores, or sealing defects, in order to ensure the product's shelf life and crisp texture. Therefore, a puffed food testing device is needed. In actual use, sufficient water is added to the testing chamber 5. Then, the bagged puffed food to be tested is placed on the filter screen 19, below the pressure plate 21. The cover plate 14 is placed inside the testing chamber 5, with the cover plate 14 in contact with the hollow sealing strip 7, so that the bagged puffed food is inside the water. Then, the air pump 10 is started via the PLC controller 2, delivering gas from the first air supply pipe 9 and the connecting pipe 8 to the inside of the hollow sealing strip 7. After the hollow sealing strip 7 expands under pressure... The inflatable hollow sealing strip 7 can automatically fill the minor unevenness between the cover plate 14 and the detection chamber 5, thereby reducing the probability of leakage. Furthermore, the inflated hollow sealing strip 7, in conjunction with the detection chamber 5, can completely isolate the test chamber from the external environment, preventing fluctuations in ambient air pressure or temperature changes from affecting the test results. After the air pump 10 is turned off, the hollow sealing strip 7 is in a stable state, and the gas impact on the baffle 12 and elastic sheet 13 disappears. Due to the elastic force of the elastic sheet 13 itself, the three sets of baffles 12 are pushed to a horizontal position, causing the three sets of damping pads 22 to adhere, thus sealing the inside of the connecting pipe 8. This prevents gas leakage from inside the hollow sealing strip 7 during the testing process. Therefore, the use of the inflatable hollow sealing strip 7 enhances the sealing effect. The sealing between the cover plate 14 and the detection chamber 5 improves the accuracy of airtightness data testing for bagged puffed food. After fixing the cover plate 14 to the open end of the detection chamber 5, the second gas supply pipe is inserted into the insertion hole 15, with its outer side against the inner wall of the second rubber ring 16, thereby improving the tightness of the connection between the two and preventing external gas from entering the interior of the detection chamber 5 through the gap between the second gas supply pipe and the insertion hole 15. The bagged puffed food is blocked by the pressure plate 21 and located inside the water. Then, the vacuum pump is started by the PLC controller 2 to evacuate the detection chamber 5 to the set pressure. During the evacuation process of the vacuum pump, the pressure change inside and outside the detection chamber 5 is as follows: because the air pressure inside the puffed food is higher than the external vacuum... Under the influence of external pressure, bagged puffed food will shrink in volume, thus being squeezed. The airtightness of the bagged puffed food can be observed by whether the water in the detection chamber 5 bubbles. The pressure sensor checks the pressure inside the detection chamber 5 and displays it on the display screen 3. If the packaging bag has poor sealing, the gas inside the packaging bag under external pressure will be discharged into the water, causing a change in the air pressure inside the detection chamber 5 and causing bubbles to rise in the water. The airtightness of the bagged puffed food is then considered unqualified. If it is qualified, there will be no bubbles in the water and the displayed pressure value will not change. The airtightness of the bagged puffed food is then qualified, and the test of the bagged puffed food is completed.

[0024] Please see Figure 1-5As shown, a cover plate 14 is movably connected to the opening end of the detection chamber 5. An insertion hole 15 is provided on the cover plate 14. A second rubber ring 16 is fixedly connected to the outside of the insertion hole 15. A second gas supply pipe is movably connected to the inside of the insertion hole 15. A vacuum pump is installed at one end of the second gas supply pipe. A hollow sealing strip 7 is attached to one side of the cover plate 14. A connecting rod 17 is fixedly connected to the lower surface of the cover plate 14. A connecting frame 18 is fixedly connected to one end of the connecting rod 17. A filter screen 19 is installed on the connecting frame 18. A support plate 20 is fixedly connected to the connecting rod 17. A pressure plate 21 is threadedly connected to the support plate 20. The PLC controller 2 is used to control the start and stop of the display screen 3, the air pump 10, the pressure sensor, and the vacuum pump. The PLC controller 2 collects and analyzes the data from the pressure sensor and transmits the data to the display screen 3 for display.

[0025] Place the bagged puffed food to be tested on the filter screen 19, below the pressure plate 21. Place the cover plate 14 inside the testing chamber 5, so that the connecting frame 18 and the filter screen 19 are at the bottom of the testing chamber 5. The bagged puffed food, under the influence of the internal gas and blocked by the pressure plate 21, floats in the clear water, allowing the airtightness of the bagged puffed food to be tested. After the test, pull the cover plate 14 upwards, and the connecting rod 17 will move the connecting frame 18 and the filter screen 19 upwards, allowing impurities in the water to be removed through the filter screen 19, and also driving the testing... The puffed food is then simultaneously removed from the detection chamber 5, eliminating the need to separately clean the water inside the detection device during the detection process. This reduces downtime and improves the efficiency of detecting the airtightness of bagged puffed food. It also prevents suspended particles in the water from being mistaken for leaking air bubbles, thus avoiding misjudging a leak. Furthermore, impurities can clog the micropores of the packaging, masking a true leak. Additionally, it prevents excessive impurities in the water from causing turbidity, thereby maintaining the visibility of the detection chamber 5 and improving the accuracy of the test results.

[0026] Working principle: The bagged puffed food to be tested is placed on the filter screen 19, below the pressure plate 21. The cover plate 14 is placed inside the detection chamber 5, so that the connecting frame 18 and the filter screen 19 are at the bottom of the detection chamber 5. The bagged puffed food floats in the water due to the internal gas and the obstruction of the pressure plate 21. Then, the air pump 10 is started by the PLC controller 2 to deliver gas from the first air supply pipe 9 and the connecting pipe 8 to the inside of the hollow sealing strip 7. After being pressurized and expanded, the hollow sealing strip 7 can automatically fill the cover plate 14 and the detection chamber 5. The slight unevenness between the parts completely isolates the test chamber from the external environment, preventing fluctuations in ambient air pressure or temperature changes from affecting the test results. After the air pump 10 is turned off, the hollow sealing strip 7 is in a stable state. Under the action of the elasticity of the elastic sheet 13, the three sets of baffles 12 are pushed to a horizontal state, so that the three sets of damping pads 22 are in contact, thus sealing the inside of the connecting pipe 8 and preventing gas leakage inside the hollow sealing strip 7 during the test. Then, the second air supply pipe is inserted into the insertion hole 15, so that its outer side is against the inner wall of the second rubber ring 16. The two parts are closely fitted to improve the tightness of the connection and prevent external gas from entering the detection chamber 5 through the second gas supply pipe and the insertion hole 15. Then, the vacuum pump is started by the PLC controller 2 to evacuate the detection chamber 5 to the set pressure. During the evacuation process, the pressure change inside and outside the detection chamber 5 causes the bagged puffed food to be compressed due to the higher air pressure inside the puffed food compared to the external vacuum state. This compression allows the detection process to be completed. The airtightness of the bagged puffed food is determined by observing whether the water inside chamber 5 bubbles. The pressure sensor checks the pressure inside chamber 5 and displays the result on display screen 3. If the packaging bag has poor sealing, the gas inside the bag, under external pressure, is released into the water, causing a change in the air pressure inside chamber 5 and causing bubbles to rise in the water. In this case, the airtightness of the bagged puffed food is unqualified. If it is qualified, there will be no bubbles in the water and the displayed pressure value will not change. In this case, the airtightness of the bagged puffed food is qualified, and the test of the bagged puffed food is completed.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] 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 illustrative of the principles of this 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.

Claims

1. A device for detecting puffed food, characterized in that: include: The detector body (1) has a pressure sensor installed on the top of its inner wall, a PLC controller (2) installed on the detector body (1), a display screen (3) installed on the detector body (1), a first magnetic sheet (4) installed on the upper surface of the detector body (1), a detection cavity (5) placed on the detector body (1), a second magnetic sheet (6) fixedly connected inside the detection cavity (5), the first magnetic sheet (4) and the second magnetic sheet (6) attract each other, a hollow sealing strip (7) fixedly connected to the inner wall of one end of the detection cavity (5), a connecting pipe (8) fixedly connected to one side of the hollow sealing strip (7), the connecting pipe (8) passes through one side of the detection cavity (5), a first air supply pipe (9) is threadedly connected inside the connecting pipe (8), an air pump (10) is installed at one end of the first air supply pipe (9), a first rubber ring (11) is fixedly connected to one end of the connecting pipe (8), and the first rubber ring (11) is attached to one side of the first air supply pipe (9).

2. The puffed food detection device according to claim 1, characterized in that: The inner wall of the connecting pipe (8) is hinged with three sets of baffles (12). One side of each set of baffles (12) is fixedly connected with an elastic sheet (13). One end of the elastic sheet (13) is installed on the inner wall of the connecting pipe (8). The outer sides of each set of baffles (12) are fixedly connected with a damping pad (22).

3. The puffed food detection device according to claim 1, characterized in that: The detection chamber (5) is movably connected to a cover plate (14), and the cover plate (14) is provided with an insertion hole (15). A second rubber ring (16) is fixedly connected to the outside of the insertion hole (15), and a second gas supply pipe is movably connected to the inside of the insertion hole (15).

4. The puffed food detection device according to claim 3, characterized in that: A vacuum pump is installed at one end of the second gas pipe. The hollow sealing strip (7) is attached to one side of the cover plate (14). A connecting rod (17) is fixedly connected to the lower surface of the cover plate (14). A connecting frame (18) is fixedly connected to one end of the connecting rod (17).

5. The puffed food detection device according to claim 4, characterized in that: A filter screen (19) is installed on the connecting frame (18), a support plate (20) is fixedly connected to the connecting rod (17), and a pressure plate (21) is threaded onto the support plate (20).

6. The puffed food detection device according to claim 1, characterized in that: The PLC controller (2) is used to control the start and stop of the display screen (3), the air pump (10), the pressure sensor and the vacuum pump. The PLC controller (2) collects and analyzes the data from the pressure sensor and transmits the data to the display screen (3) for display.

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