Packaging system for bagged bamboo shoots

Abstract

The utility model relates to the technical field of bamboo shoot packaging, and discloses a bagged bamboo shoot packaging system which comprises a blanking unit, a bamboo shoot juice output unit, a conveying unit, a gas input unit and a packaging unit. The conveying unit is used for driving the packaging bag to sequentially pass through the blanking unit, the bamboo shoot juice output unit, the gas input unit and the packaging unit; the blanking unit is used for quantitatively loading the bamboo shoots into the packaging bags; the bamboo shoot juice output unit is used for quantitatively injecting bamboo shoot juice into the packaging bag; the gas input unit is used for injecting nitrogen into liquid in the packaging bag; and the packaging unit is used for vacuumizing and sealing the packaging bag. According to the packaging system, the gas input unit is arranged, after bamboo shoots are loaded into the packaging bag and bamboo shoot liquid is injected into the packaging bag, nitrogen is injected into liquid in the packaging bag through the gas input unit, so that air in the packaging bag is exhausted, it is guaranteed that the oxygen content in the bag is extremely low before the packaging bag is vacuumized and sealed, and the preservation time is further prolonged; the fresh and tender taste of the bamboo shoots is maintained, and the cost is low.

Description

Technical Field

[0001] This application relates to the technical field of bamboo shoot packaging, and specifically relates to a packaging system for bagged bamboo shoots. Background Art

[0002] Bamboo shoots are very nutritious, rich in various trace elements, and have good health care effects on the human body. With the popularization and application of high-yield technologies for bamboo forests for shoot use and bamboo forests for both shoot and bamboo use, the output of fresh bamboo shoots has increased year by year. A large amount of fresh bamboo shoot raw materials cannot be completely consumed by fresh food alone, and the difficult situation of selling fresh bamboo shoots has emerged, and the phenomenon that farmers increase production but do not increase income is serious.

[0003] Currently, the processed products of bamboo shoots mainly include bamboo shoot dried products, boiled bamboo shoots, and flavored bamboo shoots. After processing, the bamboo shoots are quantitatively weighed and then packed into packaging bags for vacuum sealing, which can avoid contamination and extend the shelf life. Moreover, with the change of people's eating methods, instant foods that can be opened and eaten immediately are becoming more and more popular among people.

[0004] Therefore, during the packaging process, bamboo shoot liquid is usually injected into the packaging bag together. Under the action of the bamboo shoot liquid, the humidity of the bamboo shoots is maintained, preventing the bamboo shoots from drying out during storage and transportation and maintaining their fresh taste. However, the process of injecting bamboo shoot liquid is likely to bring air into the packaging bag. The oxygen in the air will promote the oxidation of some components in the bamboo shoot liquid (such as vitamins, natural sugars, etc.), which may lead to a decline in flavor, color change, and loss of nutritional components. Prolonged exposure to oxygen may also cause the bamboo shoot liquid and bamboo shoots to deteriorate. Summary of the Utility Model

[0005] The purpose of this application is to provide a packaging system for bagged bamboo shoots, aiming to solve the problem that the process of injecting bamboo shoot liquid will bring air into the packaging bag. This packaging system is provided with a gas input unit. After the bamboo shoots are loaded into the packaging bag and the bamboo shoot liquid is injected, nitrogen is injected into the liquid in the packaging bag through the gas input unit to discharge the air in the packaging bag, ensuring that the oxygen content in the bag is extremely low before vacuum sealing, further extending the storage time, maintaining the fresh taste of the bamboo shoots, and having a low cost.

[0006] To achieve the above purpose, this application provides the following technical solutions:

[0007] A packaging system for bagged bamboo shoots, including a blanking unit, a bamboo shoot juice output unit, a conveying unit, a gas input unit, and a packaging unit;

[0008] The conveying unit is provided with a fixing member for fixing a packaging bag and is used to drive the packaging bag to sequentially pass through the blanking unit, the bamboo shoot juice output unit, the gas input unit, and the packaging unit;

[0009] The blanking unit is used to quantitatively load bamboo shoots into the packaging bag;

[0010] The bamboo shoot juice output unit is used to quantitatively inject bamboo shoot juice into the packaging bag;

[0011] The gas input unit is used to inject nitrogen into the liquid in the packaging bag to discharge the air in the packaging bag;

[0012] The packaging unit is used to evacuate and seal the packaging bag.

[0013] Preferably, the blanking unit includes a feeding module, a blanking module located below the output end of the feeding module. A weighing mechanism is provided in the blanking module. The feeding module is used to convey bamboo shoots onto the weighing mechanism. A pushing mechanism is provided on one side of the blanking module; when the bamboo shoots on the weighing mechanism reach the preset weight, the pushing mechanism pushes the bamboo shoots on the weighing mechanism to the output end of the blanking module.

[0014] Preferably, the blanking module includes a first hopper located below the output end of the feeding module, a second hopper located below the output end of the first hopper, and a first lifting mechanism for driving the second hopper to lift and lower. The weighing mechanism and the pushing mechanism are both located on the first hopper; the first lifting mechanism is used to drive the output end of the second hopper to enter or leave the packaging bag.

[0015] Preferably, the bamboo shoot juice output unit includes a storage tank for storing bamboo shoot juice, a discharge pipe connected to the storage tank, a liquid injection pipe connected to the discharge pipe, and a second lifting mechanism for driving the liquid injection pipe to lift and lower. The second lifting mechanism is used to drive the output end of the liquid injection pipe to enter or leave the packaging bag. A quantitative control valve is provided on the discharge pipe.

[0016] Preferably, the gas input unit includes a third lifting mechanism and a gas transmission pipe connected to the third lifting mechanism. The gas transmission pipe is communicated with an external nitrogen transmission device. The third lifting mechanism is used to drive the output end of the gas transmission pipe to descend below the liquid level of the liquid in the packaging bag, or ascend above the packaging bag.

[0017] Preferably, the lower end of the gas transmission pipe is closed, and a plurality of air outlet holes arranged circumferentially are provided on the side wall of the gas transmission pipe near the lower end.

[0018] Preferably, the conveying unit is a chain conveying mechanism or a disk conveying mechanism. The fixing member is a clamping claw connected to the power output part of the conveying unit. The clamping claw is used to clamp both sides of the packaging bag. A first driving mechanism for driving the clamping claw to clamp or loosen the packaging bag is also provided in the conveying unit.

[0019] Preferably, it further includes a bag expanding unit. The bag expanding unit includes a support seat and adsorption mechanisms symmetrically arranged on the support seat. A second driving mechanism for driving the symmetrically arranged adsorption mechanisms to approach or separate is provided in the support seat. The adsorption mechanisms are connected to the second driving mechanism;

[0020] When the packaging bag is located below the blanking unit, after the second driving mechanism drives the adsorption mechanism to approach each other and adsorb both sides of the packaging bag, it then drives the adsorption mechanism to move away from each other to open the bag mouth of the packaging bag.

[0021] Preferably, it further includes a swinging unit. The swinging unit includes a support frame and symmetrically arranged plate bodies. The support frame is provided with a chute and a slider matching the chute. The symmetrically arranged plate bodies are connected to the slider. The support frame is provided with a third driving mechanism for driving the slider to slide back and forth along the chute;

[0022] A passage for the packaging bag to pass through is provided between the symmetrically arranged plate bodies, and the inlet end of the passage is in a horn shape. The plate bodies are located below the gas input unit.

[0023] Preferably, the packaging unit includes a rotating mechanism and a plurality of vacuum chamber modules connected to the rotating mechanism. A clamping and transferring mechanism is provided inside the vacuum chamber module. The clamping and transferring mechanism is used to clamp and transfer the packaging bag on the conveying unit into the vacuum chamber module, and the vacuum chamber module is used to evacuate and seal the packaging bag.

[0024] Compared with the prior art, the beneficial effects of this application are:

[0025] 1. By setting the gas input unit in this packaging system, after the bamboo shoots are loaded into the packaging bag and the bamboo shoot juice is injected, nitrogen is injected into the liquid in the packaging bag through the gas input unit to discharge the air in the packaging bag, ensuring that the oxygen content in the bag is extremely low before vacuum evacuation and sealing, further extending the storage time and maintaining the fresh taste of the bamboo shoots, and with low cost.

[0026] 2. By arranging a plurality of circumferentially arranged air outlet holes on the side wall of the gas delivery pipe near the lower end in this packaging system, it is ensured that nitrogen can contact the liquid in multiple directions.

[0027] 3. By arranging a swinging module on the conveying unit in this packaging system, the packaging bag can be continuously swung during the nitrogen injection process, improving the efficiency of discharging air. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the packaging system for bagged bamboo shoots in Embodiment 1;

[0029] Figure 2 is a schematic diagram of the blanking module of the packaging system for bagged bamboo shoots in Embodiment 1;

[0030] Figure 3 is a schematic diagram of the bamboo shoot juice output unit of the packaging system for bagged bamboo shoots in Embodiment 1;

[0031] Figure 4 is a schematic diagram of the gas input unit of the packaging system for bagged bamboo shoots in Embodiment 1;

[0032] Figure 5 It is a schematic diagram of the fixing part of the packaging system of the bagged bamboo shoots in Embodiment 1;

[0033] Figure 6 It is a schematic diagram of the swinging unit of the packaging system of the bagged bamboo shoots in Embodiment 1;

[0034] Among them, the reference numerals of each figure are as follows:

[0035] Feeding unit 1; Bamboo shoot juice output unit 2; Conveying unit 3; Gas input unit 4; Packaging unit 5; Bag opening unit 6; Swinging unit 7; Packaging bag 8; Feeding module 11; Blanking module 12; Storage tank 21; Discharge pipe 22; Liquid injection pipe 23; Second lifting mechanism 24; Fixing part 31; First driving mechanism 32; Third lifting mechanism 41; Gas transmission pipe 42; Rotating mechanism 51; Vacuum chamber module 52; Support seat 61; Adsorption mechanism 62; Support frame 71; Plate body 72; Channel 73; Third driving mechanism 74; First blanking hopper 121; Second blanking hopper 122; First lifting mechanism 123; Quantitative control valve 221; Fixed rod 311; Movable rod 312; Connecting plate 313; Compression spring 314; Air outlet hole 421; Clamping and transferring mechanism 521; Chute 711; Slide block 712; Weighing mechanism 1211; Pushing mechanism 1212; First clamping part 3111; Second clamping part 3121. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0037] Embodiment 1

[0038] Refer to Figures 1 to 6 , a packaging system for bagged bamboo shoots, including a feeding unit 1, a bamboo shoot juice output unit 2, a conveying unit 3, a gas input unit 4, and a packaging unit 5;

[0039] A fixing part 31 for fixing a packaging bag 8 is provided on the conveying unit 3, and is used to drive the packaging bag 8 to pass through the feeding unit 1, the bamboo shoot juice output unit 2, the gas input unit 4, and the packaging unit 5 in sequence;

[0040] The feeding unit 1 is used to quantitatively load bamboo shoots into the packaging bag 8;

[0041] The bamboo shoot juice output unit 2 is used to quantitatively inject bamboo shoot juice into the packaging bag 8;

[0042] The gas input unit 4 is used to inject nitrogen into the liquid in the packaging bag 8 to discharge the air in the packaging bag 8;

[0043] The packaging unit 5 is used to vacuum-seal the packaging bag 8.

[0044] In this design, the packaging bag 8 is conveyed by the conveying unit 3 to sequentially pass through the blanking unit 1, the bamboo shoot juice output unit 2, the gas input unit 4, and the packaging unit 5; when the packaging bag 8 is located at the blanking unit 1, the blanking unit 1 quantitatively loads bamboo shoots into the packaging bag 8, and then the conveying unit 3 drives the packaging bag 8 into the bamboo shoot juice output unit 2. The bamboo shoot juice output unit 2 quantitatively injects bamboo shoot juice into the packaging bag 8 to complete bagging. The conveying unit 3 conveys the bagged packaging bag 8 to the gas input unit 4, and the gas input unit 4 injects nitrogen into the liquid in the packaging bag 8. Through continuous injection of nitrogen, the air in the packaging bag 8 is discharged; finally, the conveying unit 3 conveys the packaging bag 8 into the packaging unit 5, and the packaging unit 5 completes vacuum-sealing.

[0045] It should be noted here that the purpose of loading bamboo shoots first and then injecting bamboo shoot juice is to avoid splashing or overflowing of bamboo shoot juice caused by the falling of bamboo shoots. Nitrogen is used because its cost is low and it can be discharged into the atmosphere without being recycled again.

[0046] Preferably, the blanking unit 1 includes a feeding module 11 and a blanking module 12 located below the output end of the feeding module 11. A weighing mechanism 1211 is provided in the blanking module 12. The feeding module 11 is used to convey bamboo shoots onto the weighing mechanism 1211, and a pushing mechanism 1212 is provided on one side of the blanking module 12; when the bamboo shoots on the weighing mechanism 1211 reach the preset weight, the pushing mechanism 1212 pushes the bamboo shoots on the weighing mechanism 1211 to the output end of the blanking module 12.

[0047] During use, the bamboo shoots after pretreatment are output to the feeding module 11. The feeding module 11 transports the bamboo shoots to the blanking module 12, and the weighing mechanism 1211 in the blanking module 12 weighs them. When the weight of the bamboo shoots reaches the preset weight, the pushing mechanism 1212 pushes the bamboo shoots on the weighing mechanism 1211 to the output end of the blanking module 12 and the bamboo shoots fall into the packaging bag 8 from the output end of the blanking module 12 to complete the loading of the bamboo shoots. In this way, it can be ensured that the weight of the bamboo shoots loaded into the packaging bag 8 each time is average.

[0048] Further, the blanking module 12 includes a first hopper 121 located below the output end of the material conveying module 11, a second hopper 122 located below the output end of the first hopper 121, and a first lifting mechanism 123 for driving the second hopper 122 to lift and lower. The weighing mechanism 1211 and the pushing mechanism 1212 are both located on the first hopper 121; the first lifting mechanism 123 is used to drive the output end of the second hopper 122 to enter or leave the packaging bag 8.

[0049] Specifically, by adopting the double-hopper method of the first hopper 121 and the second hopper 122, the first hopper 121 is mainly used to quantitatively convey bamboo shoots into the second hopper 122. And the second hopper 122, driven by the first lifting mechanism 123, can drive its output end to enter or leave the packaging bag 8, ensuring that the bamboo shoots can accurately fall into the packaging bag 8.

[0050] Among them, the first lifting mechanism 123 can adopt a lifting base with a cylinder. Briefly speaking, the cylinder is connected to the lifting base, and the second hopper 122 is connected to the power output end of the cylinder. The second hopper 122 is lifted and lowered by the cylinder.

[0051] Preferably, the bamboo shoot juice output unit 2 includes a storage tank 21 for storing bamboo shoot juice, a discharge pipe 22 connected to the storage tank 21, a liquid injection pipe 23 connected to the discharge pipe 22, and a second lifting mechanism 24 for driving the liquid injection pipe 23 to lift and lower. The second lifting mechanism 24 is used to drive the output end of the liquid injection pipe 23 to enter or leave the packaging bag 8, and a quantitative control valve 221 is provided on the discharge pipe 22.

[0052] In actual use, when the packaging bag 8 is located below the liquid injection pipe 23, the second lifting mechanism 24 drives the liquid injection pipe 23 to descend, so that the output end of the liquid injection pipe 23 enters the packaging bag 8. The quantitative control valve 221 on the discharge pipe 22 is opened, and the storage tank 21 injects the bamboo shoot juice along the liquid injection pipe 23 into the packaging bag 8, realizing quantitative injection, and ensuring the accuracy of liquid injection, and avoiding waste of bamboo shoot juice. Among them, the second lifting mechanism 24 can be similar to the first lifting mechanism 123, and also uses a cylinder to realize the lifting and lowering of the liquid injection pipe 23.

[0053] As a preference in this embodiment, the gas input unit 4 includes a third lifting mechanism 41 and a gas transmission pipe 42 connected to the third lifting mechanism 41. The gas transmission pipe 42 is communicated with an external nitrogen gas transmission device. The third lifting mechanism 41 is used to drive the output end of the gas transmission pipe 42 to descend to below the liquid level of the liquid in the packaging bag 8, or ascend above the packaging bag 8.

[0054] Specifically, when the packaging bag 8 is located below the gas transmission pipe 42, the third lifting mechanism 41 drives the gas transmission pipe 42 downward, so that the output end of the gas transmission pipe 42 descends below the liquid level in the packaging bag 8. The external nitrogen delivery device injects nitrogen into the packaging bag 8 through the gas transmission pipe 42, so as to discharge the air in the liquid in the packaging bag 8, ensure that the oxygen content in the bag is extremely low before vacuum packaging and sealing, further extend the storage time, maintain the fresh and tender taste of bamboo shoots, and the cost is low.

[0055] Furthermore, the lower end of the gas transmission pipe 42 is closed, and a plurality of air outlet holes 421 arranged circumferentially are provided on the side wall of the gas transmission pipe 42 near the lower end. With this design, it is ensured that nitrogen can contact the liquid in multiple directions, improving the efficiency of air discharge.

[0056] Preferably, the conveying unit 3 is a chain conveying mechanism or a disc conveying mechanism, the fixing member 31 is a clamping claw connected to the power output part of the conveying unit 3, the clamping claw is used to clamp both sides of the packaging bag 8, and a first driving mechanism 32 for driving the clamping claw to clamp or loosen the packaging bag 8 is further provided in the conveying unit 3.

[0057] Specifically, the conveying unit 3 can adopt a chain conveying mechanism or a disc conveying mechanism, and at fixed positions of the conveying unit 3, that is, before entering the blanking unit 1 and at the position of entering the packaging unit 5, the first driving mechanism 32 is provided. The first driving mechanism 32 does not move with the clamping claw. Before entering the blanking unit 1, the first driving mechanism 32 is used to drive the clamping claw to clamp the packaging bag 8, and at the position of the packaging unit 5, the first driving mechanism 32 is used to drive the clamping claw to loosen the packaging bag 8.

[0058] More specifically, the clamping claws are symmetrically arranged. The clamping claw includes a fixed rod 311 and a movable rod 312. A first clamping portion 3111 is provided at one end of the fixed rod 311, and a second clamping portion 3121 matching the first clamping portion 3111 is provided at one end of the movable rod 312. The movable rod 312 is slidably connected in the fixed rod 311. The fixed rod 311 is connected to the conveying unit 3. The movable rods 312 on the symmetrically arranged clamping claws are connected by a connecting plate 313, and a spring 314 sleeved on the movable rod 312 is provided between the other end of the fixed rod 311 and the connecting plate 313. The spring 314 is in a contracted state, that is, the spring 314 always pushes the connecting plate 313 to make the first clamping portion 3111 and the second clamping portion 3121 fit;

[0059] When the connecting plate 313 moves to the position of the first driving mechanism 32, the first driving mechanism 32 pushes the connecting plate 313 so that the connecting plate 313 compresses the spring 314 and pushes the movable rod 312 along the length direction of the fixed rod 311 to separate the first clamping part 3111 from the second clamping part 3121. The first driving mechanism 32 can be a pushing cylinder.

[0060] Preferably, it further comprises a bag opening unit 6, which comprises a support seat 61, an adsorption mechanism 62 symmetrically arranged on the support seat 61, a second driving mechanism (not shown in the figure) for driving the symmetrically arranged adsorption mechanism 62 to approach or move away is arranged in the support seat 61, and the adsorption mechanism 62 is connected to the second driving mechanism;

[0061] Specifically, when the packaging bag 8 is located below the blanking unit 1, the second driving mechanism drives the adsorption mechanism 62 to approach each other and adsorb the two sides of the packaging bag 8, and then drives the adsorption mechanism 62 away from each other to open the bag mouth of the packaging bag 8 to facilitate the bamboo shoots to fall into the packaging bag 8, wherein the second driving structure can adopt a double-headed screw or a two-way cylinder, and the adsorption mechanism 62 can adopt a suction cup.

[0062] Preferably, the swing unit 7 is further included, the swing unit 7 includes a support frame 71 and a symmetrically arranged plate body 72, the support frame 71 is provided with a slide groove 711 and a slider 712 matching the slide groove 711, the symmetrically arranged plate body 72 is connected to the slider 712, and the support frame 71 is provided with a third driving mechanism 74 for driving the slider 712 to slide back and forth along the slide groove 711;

[0063] A channel 73 for the packaging bag 8 to pass through is provided between the symmetrically arranged plates 72 , and an inlet end of the channel 73 is trumpet-shaped. The plates 72 are located below the gas input unit 4 .

[0064] In actual use, when the conveying unit 3 conveys the packaging bag 8 to the gas input unit 4, the packaging bag 8 will enter the channel 73 because the inlet end of the channel 73 is trumpet-shaped. The third driving mechanism 74 drives the slider 712 to slide back and forth in the slide groove 711 to shake the packaging bag 8 in the channel 73 to improve the efficiency of air exhaust.

[0065] Among them, the third driving mechanism 74 can adopt the combined linkage of a motor, a driving wheel, and a connecting rod to realize the reciprocating sliding of the slider 712 in the slide groove 711. Specifically, the power output end of the motor is connected to the driving wheel, and an eccentrically arranged connecting column is provided on the driving wheel. One end of the connecting rod is rotatably connected to the connecting column, and the other end is rotatably connected to the slider 712. The driving wheel is rotated by the motor, thereby driving the slider 712 to move back and forth in the slide groove 711.

[0066] Preferably, the packaging unit 5 includes a rotating mechanism 51 and a plurality of vacuum chamber modules 52 connected to the rotating mechanism 51. A clamping and transferring mechanism 521 is provided in the vacuum chamber module 52. The clamping and transferring mechanism 521 is configured to clamp and transfer the packaging bag 8 on the conveying unit 3 into the vacuum chamber module 52, and the vacuum chamber module 52 is configured to evacuate and seal the packaging bag 8.

[0067] Specifically, the packaging unit 5 has been publicly described in Chinese Patent CN103496459B. We do not rule out that the packaging unit 5 in this embodiment adopts the corresponding part disclosed in that solution. Therefore, the specific structure of the packaging unit 5 will not be described in detail in this embodiment.

[0068] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A packaging system for bagged bamboo shoots, characterized in that, It includes a blanking unit, a bamboo shoot juice output unit, a conveying unit, a gas input unit, and a packaging unit; A fixing member for fixing a packaging bag is provided on the conveying unit, and is used to drive the packaging bag to sequentially pass through the blanking unit, the bamboo shoot juice output unit, the gas input unit, and the packaging unit; The blanking unit is used to quantitatively load bamboo shoots into the packaging bag; The bamboo shoot juice output unit is used to quantitatively inject bamboo shoot juice into the packaging bag; The gas input unit is used to inject nitrogen into the liquid in the packaging bag to discharge the air in the packaging bag; The packaging unit is used to vacuum seal the packaging bag.

2. The packaging system for bagged bamboo shoots according to claim 1, characterized in that, The blanking unit includes a feeding module and a blanking module located below the output end of the feeding module. A weighing mechanism is provided in the blanking module. The feeding module is used to convey bamboo shoots to the weighing mechanism, and a pushing mechanism is provided on one side of the blanking module; when the bamboo shoots on the weighing mechanism reach the preset weight, the pushing mechanism pushes the bamboo shoots on the weighing mechanism to the output end of the blanking module.

3. The packaging system for bagged bamboo shoots according to claim 2, wherein, The blanking module includes a first blanking hopper located below the output end of the feeding module, a second blanking hopper located below the output end of the first blanking hopper, and a first lifting mechanism for driving the second blanking hopper to lift. The weighing mechanism and the pushing mechanism are both located on the first blanking hopper; the first lifting mechanism is used to drive the output end of the second blanking hopper to enter or leave the packaging bag.

4. The packaging system for bagged bamboo shoots according to claim 1, characterized in that, The bamboo shoot juice output unit includes a storage tank for storing bamboo shoot juice, a discharge pipe connected to the storage tank, a liquid injection pipe connected to the discharge pipe, and a second lifting mechanism for driving the liquid injection pipe to lift. The second lifting mechanism is used to drive the output end of the liquid injection pipe to enter or leave the packaging bag, and a quantitative control valve is provided on the discharge pipe.

5. The packaging system for bagged bamboo shoots according to claim 1, characterized in that, The gas input unit includes a third lifting mechanism and a gas transmission pipe connected to the third lifting mechanism. The gas transmission pipe is communicated with an external nitrogen transmission device. The third lifting mechanism is used to drive the output end of the gas transmission pipe to descend below the liquid level of the liquid in the packaging bag, or ascend above the packaging bag.

6. The packaging system for bagged bamboo shoots according to claim 5, characterized in that, The lower end of the gas transmission pipe is closed, and a plurality of circumferentially arranged air outlet holes are provided on the side wall of the gas transmission pipe near the lower end.

7. The packaging system for bagged bamboo shoots according to claim 1, characterized in that, The conveying unit is a chain conveying mechanism or a disc conveying mechanism. The fixing member is a clamping claw connected to the power output part of the conveying unit. The clamping claw is used to clamp both sides of the packaging bag, and a first driving mechanism for driving the clamping claw to clamp or loosen the packaging bag is also provided in the conveying unit.

8. The packaging system for bagged bamboo shoots according to claim 1, characterized in that, It further includes a bag-opening unit. The bag-opening unit includes a support seat and adsorption mechanisms symmetrically arranged on the support seat. A second driving mechanism for driving the symmetrically arranged adsorption mechanisms to approach or separate is provided in the support seat, and the adsorption mechanisms are connected to the second driving mechanism; When the packaging bag is located below the blanking unit, the second driving mechanism drives the adsorption mechanisms to approach each other and adsorb both sides of the packaging bag, and then drives the adsorption mechanisms to separate from each other to open the bag mouth of the packaging bag.

9. The packaging system for bagged bamboo shoots according to claim 1, characterized in that, It further includes a swing unit, and the swing unit includes a support frame and symmetrically arranged plate bodies. The support frame is provided with a chute and a slider matching the chute, and the symmetrically arranged plate bodies are connected to the slider. The support frame is provided with a third driving mechanism for driving the slider to slide back and forth along the chute; A channel for the packaging bag to pass through is provided between the symmetrically arranged plate bodies, and the inlet end of the channel is in a flared shape. The plate bodies are located below the gas input unit.

10. The packaging system for bagged bamboo shoots according to claim 1, characterized in that, The packaging unit includes a rotating mechanism and a plurality of vacuum chamber modules connected to the rotating mechanism. A clamping and transferring mechanism is provided in the vacuum chamber module. The clamping and transferring mechanism is used for clamping and transferring the packaging bag on the conveying unit into the vacuum chamber module, and the vacuum chamber module is used for evacuating and sealing the packaging bag.

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