A food vacuum gas-flushing packaging machine

Abstract

This utility model discloses a food vacuum gas-filled packaging machine, relating to the field of food packaging technology. It addresses the problem in existing technologies where some brittle foods break during vacuuming due to external air pressure, thus affecting food quality. The machine features a tray at the center of the upper surface of the packaging platform. A heat-sealing strip is fixedly connected to the upper surface of the packaging platform and the rear end of the tray. A first sealing ring is fixedly connected to the upper surface of the packaging platform and the rear end of the heat-sealing strip. An air extraction pipe is fixedly installed on one side of the upper surface of the packaging platform and inside the first sealing ring. A conveying pipe is fixedly installed on the upper surface of the packaging platform and inside the first sealing ring on the other side. An L-shaped flexible tube is fixedly connected to the upper end of the conveying pipe. The machine employs a simultaneous vacuuming and gas-filling design, using a vacuum pump and an air pump working in tandem to inject inert gas while extracting air, avoiding the problem of food breakage due to pressure during vacuuming alone, as seen in traditional separate operations.

Description

Technical Field

[0001] This utility model relates to the field of food packaging technology, specifically a food vacuum gas-flushing packaging machine. Background Technology

[0002] Vacuum gas-flushing packaging is an advanced food preservation technology that extends shelf life and maintains quality by evacuating the air from the packaging bag (creating a vacuum) and then injecting an inert gas (such as nitrogen, carbon dioxide, or a mixture of gases). The principle is that vacuum treatment inhibits the growth of aerobic microorganisms, while the injected gas prevents oxidation, crushing, or deformation of the food, thus maintaining its color and texture. This technology is widely used in products such as meat, snacks, and coffee, and also provides moisture and mold protection. Compared to ordinary packaging, it can significantly extend shelf life by 1-3 times. Vacuum gas-flushing packaging machines are required for food packaging.

[0003] For example, patent announcement number CN203528848U discloses an automatic filling, vacuum, and gas-filling packaging machine, including a conveyor frame and a film-laying device, a thermoforming device, a filling device, a film-laying device, a heat-sealing device, and a cutting device respectively mounted on the frame. The film-laying device is located on one side of the frame, and the thermoforming device, filling device, heat-sealing device, and cutting device are sequentially placed on the frame body. The film-laying device is positioned above the heat-sealing device. This utility model adopts automated production for the packaging process, forming an automated production line that integrates box forming, hawthorn cake filling, and automatic sealing, effectively improving work efficiency.

[0004] In the aforementioned technology, the vacuuming and inflation mechanisms of the vacuum gas-filling packaging machine are set up separately. Some foods are brittle and may break during vacuuming due to external air pressure, thus affecting the quality of the food. Therefore, there is an urgent need in the market to develop a food vacuum gas-filling packaging machine to help people solve the existing problems. Utility Model Content

[0005] The purpose of this utility model is to provide a food vacuum gas-filling packaging machine to solve the problem mentioned in the background art that the vacuuming and gas-filling mechanisms of the existing vacuum gas-filling packaging machine are set separately, and some foods are brittle and break due to external air pressure during vacuuming, thus affecting the quality of the food.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a food vacuum gas-filled packaging machine, comprising a packaging table, a tray provided in the middle of the upper surface of the packaging table, a heat-sealing strip fixedly connected to the upper surface of the packaging table and the rear end of the tray, a first sealing ring fixedly connected to the upper surface of the packaging table and the rear end of the heat-sealing strip, an air extraction pipe fixedly provided on the upper surface of the packaging table and inside one side of the first sealing ring, the lower end of the air extraction pipe passing through the inside of the packaging table and extending out from the rear end of the packaging table, a conveying pipe fixedly provided on the upper surface of the packaging table and inside the other side of the first sealing ring, an L-shaped flexible tube fixedly connected to the upper end of the conveying pipe, the end of the conveying pipe passing through the inside of the packaging table and extending out from the rear end of the packaging table, a vacuum pump fixedly connected to the air extraction pipe, and an air pump fixedly connected to the conveying pipe.

[0007] Preferably, the upper surface of the packaging platform is fixedly connected to a first rotating connector on both sides of the rear end of the pallet, and the rear end of the pallet is rotatably connected to the two first rotating connectors via a first rotating shaft.

[0008] Preferably, a support column is fixedly connected to the middle of the lower end face of the packaging platform, a second rotating connector is fixedly connected to the upper end of the support column, a third rotating connector is fixedly connected to the middle of the lower end of the tray, the lower end of the third rotating connector passes through the upper end face of the packaging platform and is connected to the second rotating connector by an electrically controlled telescopic rod, and the upper and lower ends of the electrically controlled telescopic rod are rotatably connected to the third rotating connector and the second rotating connector by a second rotating shaft and a third rotating shaft, respectively.

[0009] Preferably, the upper surface of the packaging platform is fixedly connected to a first guide support rod on both sides of the heat sealing strip, the upper ends of the two first guide support rods are fixedly connected to a first top plate, the upper surface of the first top plate is fixedly connected to a first hydraulic rod, and the upper ends of the two first guide support rods are connected to a first lifting plate.

[0010] Preferably, the lower end of the telescopic end of the first hydraulic rod passes through the first top plate and is fixedly connected to the middle of the upper end of the first lifting plate. The first lifting plate is provided with first guide holes on both sides, and the two first guide support rods pass through the two first guide holes respectively. A high-temperature resistant rubber strip is fixedly connected to the middle of the lower end of the first lifting plate.

[0011] Preferably, the upper surface of the packaging platform is fixedly connected to a second guide support rod on both sides of the first sealing ring, the upper ends of the two second guide support rods are fixedly connected to a second top plate, the upper middle part of the second top plate is fixedly connected to a second hydraulic rod, and the upper middle part of the two second guide support rods is connected to a second lifting plate.

[0012] Preferably, the lower end of the telescopic end of the second hydraulic rod passes through the second top plate and is fixedly connected to the middle of the upper end of the second lifting plate. The second lifting plate is provided with second guide holes on both sides. The two second guide support rods pass through the two second guide holes respectively. The lower end face of the second lifting plate is fixedly connected with a second sealing ring. The front end of the L-shaped soft tube extends out of the front end of the first sealing ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, a synchronous vacuuming and gas filling design is adopted. By working together with a vacuum pump and an air pump, an inert gas (such as nitrogen) is injected while air is being extracted, which avoids the problem of food being crushed due to single vacuuming in traditional separate operation. It is especially suitable for food packaging with a brittle texture.

[0015] (2) In this utility model, an adjustable tray structure is added, and the tray angle is adjusted by an electrically controlled telescopic rod. The gas density difference (nitrogen is lighter than air) is used to achieve efficient gas replacement, ensuring that the air inside the packaging bag is fully discharged, while reducing physical damage to the food caused by airflow impact.

[0016] (3) In this utility model, the sealing and heat sealing process is optimized. The airtightness of the packaging bag opening is ensured by double sealing rings (first sealing ring and second sealing ring), and L-shaped soft tube is used for directional air inflation. The precise pressing of high temperature resistant rubber strip and heat sealing strip improves the sealing performance of the packaging while avoiding gas leakage during the heat sealing process, and significantly extends the food preservation period. Attached Figure Description

[0017] Figure 1 This is a front view of a food vacuum gas-flushing packaging machine according to the present invention;

[0018] Figure 2 This is a front sectional view of the first sealing ring of this utility model;

[0019] Figure 3 This is a main sectional view of the heat-sealing strip of this utility model;

[0020] Figure 4 This is a side sectional view of the pallet of this utility model.

[0021] In the diagram: 1. Packaging table; 101. Heat sealing strip; 102. First rotating connector; 103. Support column; 104. Second rotating connector; 105. First sealing ring; 2. Pallet; 201. First rotating shaft; 202. Third rotating connector; 203. Electrically controlled telescopic rod; 204. Second rotating shaft; 205. Third rotating shaft; 3. First guide support rod; 301. First top plate; 302. First hydraulic rod; 303. First lifting plate; 304. First guide hole; 305. High-temperature resistant rubber strip; 4. Suction pipe; 401. Vacuum pump; 5. Conveying pipe; 501. L-shaped flexible pipe; 502. Air pump; 6. Second guide support rod; 601. Second top plate; 602. Second hydraulic rod; 603. Second lifting plate; 604. Second guide hole; 605. Second sealing ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4This utility model provides an embodiment of a food vacuum gas-filled packaging machine, including a packaging table 1. A tray 2 is provided in the middle of the upper surface of the packaging table 1. A heat-sealing strip 101 is fixedly connected to the upper surface of the packaging table 1 and the rear end of the tray 2. A first sealing ring 105 is fixedly connected to the upper surface of the packaging table 1 and the rear end of the heat-sealing strip 101. An air extraction pipe 4 is fixedly provided on one side of the upper surface of the packaging table 1 inside the first sealing ring 105. The lower end of the air extraction pipe 4 passes through the interior of the packaging table 1 and extends out from the rear end of the packaging table 1. A conveying pipe 5 is fixedly installed on the other side inside the first sealing ring 105. An L-shaped flexible pipe 501 is fixedly connected to the upper end of the conveying pipe 5. The end of the conveying pipe 5 passes through the inside of the packaging platform 1 and extends out from the rear end face of the packaging platform 1. Second guide support rods 6 are fixedly connected to the upper end face of the packaging platform 1 on both sides of the first sealing ring 105. The upper ends of the two second guide support rods 6 are fixedly connected to a second top plate 601. A second hydraulic rod 602 is fixedly connected to the middle of the upper end of the second top plate 601. The upper ends of the two second guide support rods 6 are connected to the middle of the second top plate 601. A second lifting plate 603 is provided. The lower end of the telescopic end of the second hydraulic rod 602 passes through the second top plate 601 and is fixedly connected to the upper middle part of the second lifting plate 603. Second guide holes 604 are provided on both sides of the second lifting plate 603. Two second guide support rods 6 pass through the two second guide holes 604 respectively. A second sealing ring 605 is fixedly connected to the lower end face of the second lifting plate 603. The front end of the L-shaped flexible tube 501 extends beyond the front end of the first sealing ring 105. The opening of the food bag to be inflated is inserted into the first sealing ring 105 and... Between the second sealing rings 605, the front end of the L-shaped flexible tube 501 is inserted into the packaging bag. The second lifting plate 603 is driven to descend by the second hydraulic rod 602, so that the second sealing ring 605 at the lower end of the second lifting plate 603 descends and presses and seals the opening of the food bag with the first sealing ring 105. At the same time, the L-shaped flexible tube 501 is sealed synchronously with the opening of the food bag. A vacuum pump 401 is fixedly connected to the air extraction pipe 4, and an air pump 502 is fixedly connected to the delivery pipe 5. The vacuum pump 401 draws air from inside the food through the air extraction pipe 4.

[0024] Please see Figure 2 and Figure 3The upper surface of the packaging platform 1 and both sides of the rear end of the tray 2 are fixedly connected to the first rotating connectors 102. The rear end of the tray 2 is rotatably connected to the two first rotating connectors 102 via a first rotating shaft 201. A support column 103 is fixedly connected to the middle of the lower surface inside the packaging platform 1. A second rotating connector 104 is fixedly connected to the upper end of the support column 103. A third rotating connector 202 is fixedly connected to the middle of the lower end of the tray 2. The lower end of the third rotating connector 202 passes through the upper surface of the packaging platform 1 and is connected to the second rotating connector 104 via an electrically controlled telescopic rod 203. The upper and lower ends of the electrically controlled telescopic rod 203 are connected to the third rotating connector 104 via an electrically controlled telescopic rod 203. The connector 202 and the second rotating connector 104 are rotatably connected by the second rotating shaft 204 and the third rotating shaft 205, respectively. When the suction pipe 4 draws in air from inside the food, the rear end of the delivery pipe 5 is connected to a nitrogen tank. The air pump 502 delivers nitrogen into the food bag through the L-shaped flexible tube 501. At the same time, the electric telescopic rod 203 pushes the tray 2 to deflect upward around the first rotating shaft 201, causing the end of the food bag away from the opening to rise. Utilizing the principle that nitrogen is less dense than air, the nitrogen rises when it fills the packaging bag, causing the air inside the packaging bag to fall and be drawn out through the suction pipe 4, thus achieving air replacement inside the food bag.

[0025] Please see Figure 4 The packaging platform 1 has two first guide support rods 3 fixedly connected to the upper surface and both sides of the heat sealing strip 101. The upper ends of the two first guide support rods 3 are fixedly connected to a first top plate 301. The middle of the upper surface of the first top plate 301 is fixedly connected to a first hydraulic rod 302. The upper middle of the two first guide support rods 3 is connected to a first lifting plate 303. The lower end of the telescopic end of the first hydraulic rod 302 passes through the first top plate 301 and is fixedly connected to the middle of the upper end of the first lifting plate 303. The first lifting plate 303 has first guide holes 304 on both sides. The two first guide support rods 3 pass through the two first guide holes 304 respectively. The middle of the lower end of the first lifting plate 303 is fixedly connected to a high-temperature resistant rubber strip 305. After the food bag is filled with air, the first lifting plate 303 is lowered by the first hydraulic rod 302, so that the first lifting plate 303 drives the high-temperature resistant rubber strip 305 to press the front end of the opening of the packaging bag onto the heat sealing strip 101, and the packaging bag is heat-sealed by the heat sealing strip 101.

[0026] Working principle: During use, after placing the food to be packaged into the packaging bag, insert the bag opening between the first sealing ring 105 and the second sealing ring 605, ensuring that the tip of the L-shaped flexible tube 501 extends into the packaging bag. Activate the second hydraulic rod 602 to push the second lifting plate 603 downwards, causing the second sealing ring 605 to tightly adhere to the first sealing ring 105, forming a sealed environment. Subsequently, the vacuum pump 401 and the air pump 502 are simultaneously activated. The vacuum pump extracts air from the bag through the suction pipe 4, while the air pump 502 injects nitrogen into the bag through the L-shaped flexible tube 501. During this process, the electrically controlled telescopic rod 203 pushes the support plate 2 upwards around the first rotating shaft 201, utilizing the characteristic that nitrogen's density is less than air to cause nitrogen to rise and replace residual air inside the bag. After vacuum inflation is completed, the first hydraulic rod 302 drives the first lifting plate 303 to press down, and the high-temperature resistant rubber strip 305 presses the bag opening tightly onto the heat sealing strip 101 for heat sealing, thus realizing integrated vacuum inflation packaging of food, effectively avoiding the problem of brittle food being damaged due to pressure difference during the simple vacuuming process.

[0027] It will be apparent to those skilled in the art that this invention 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 essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A machine for vacuum aerated packaging of food products, comprising a packaging station (1), characterized in that: A tray (2) is provided in the middle of the upper end face of the packaging platform (1). A heat sealing strip (101) is fixedly connected to the upper end face of the packaging platform (1) and the rear end of the tray (2). A first sealing ring (105) is fixedly connected to the upper end face of the packaging platform (1) and the rear end of the heat sealing strip (101). An air extraction pipe (4) is fixedly provided on one side of the upper end face of the packaging platform (1) and inside the first sealing ring (105). The lower end of the air extraction pipe (4) passes through the inside of the packaging platform (1) and extends out from the rear end face of the packaging platform (1). A conveying pipe (5) is fixedly provided on the upper end face of the packaging platform (1) and inside the first sealing ring (105) on the other side. An L-shaped flexible pipe (501) is fixedly connected to the upper end of the conveying pipe (5). The end of the conveying pipe (5) passes through the inside of the packaging platform (1) and extends out from the rear end face of the packaging platform (1). A vacuum pump (401) is fixedly connected to the air extraction pipe (4). An air pump (502) is fixedly connected to the conveying pipe (5).

2. A machine for vacuum air-packing food products as claimed in claim 1, characterized in that: The upper surface of the packaging platform (1) and both sides of the rear end of the tray (2) are fixedly connected with first rotating connectors (102). The rear end of the tray (2) and the two first rotating connectors (102) are rotatably connected through a first rotating shaft (201).

3. A machine for vacuum air-packing food products as claimed in claim 1, characterized in that: A support column (103) is fixedly connected to the middle of the lower end face of the packaging table (1). A second rotating connector (104) is fixedly connected to the upper end of the support column (103). A third rotating connector (202) is fixedly connected to the middle of the lower end of the tray (2). The lower end of the third rotating connector (202) passes through the upper end face of the packaging table (1) and is connected to the second rotating connector (104) through an electrically controlled telescopic rod (203). The upper and lower ends of the electrically controlled telescopic rod (203) are rotatably connected to the third rotating connector (202) and the second rotating connector (104) through a second rotating shaft (204) and a third rotating shaft (205), respectively.

4. A machine for vacuum air-packing food products as claimed in claim 1, characterized in that: The packaging table (1) is fixedly connected to the upper surface and both sides of the heat sealing strip (101) with first guide support rods (3). The upper ends of the two first guide support rods (3) are fixedly connected to the first top plate (301). The middle of the upper surface of the first top plate (301) is fixedly connected to the first hydraulic rod (302). The upper ends of the middle of the two first guide support rods (3) are connected to the first lifting plate (303).

5. A machine for vacuum air-packing food products as claimed in claim 4, characterized in that: The lower end of the telescopic end of the first hydraulic rod (302) passes through the first top plate (301) and is fixedly connected to the middle of the upper end of the first lifting plate (303). The first lifting plate (303) is provided with first guide holes (304) on both sides. The two first guide support rods (3) pass through the two first guide holes (304) respectively. The middle of the lower end of the first lifting plate (303) is fixedly connected with a high temperature resistant rubber strip (305).

6. A food vacuum gas-flushing packaging machine according to claim 1, characterized in that: The packaging platform (1) is fixedly connected to the upper surface and to both sides of the first sealing ring (105) with second guide support rods (6). The upper ends of the two second guide support rods (6) are fixedly connected to the second top plate (601). The middle part of the upper end of the second top plate (601) is fixedly connected to the second hydraulic rod (602). The upper ends of the middle part of the two second guide support rods (6) are connected to the second lifting plate (603).

7. A food vacuum gas-flushing packaging machine according to claim 6, characterized in that: The lower end of the telescopic end of the second hydraulic rod (602) passes through the second top plate (601) and is fixedly connected to the middle of the upper end of the second lifting plate (603). The second lifting plate (603) is provided with second guide holes (604) on both sides. The two second guide support rods (6) pass through the two second guide holes (604) respectively. The lower end face of the second lifting plate (603) is fixedly connected with a second sealing ring (605). The front end of the L-shaped soft tube (501) extends out of the front end of the first sealing ring (105).

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