Hydrogen-regulated fresh-keeping and packaging all-in-one machine for agricultural products

Abstract

The invention discloses an agricultural product hydrogen regulation fresh-keeping and packaging all-in-one machine, and belongs to the technical field of agricultural product packaging all-in-one machines. A nozzle air pipe is installed at the axis of a nozzle air pipe fixing plate, an inflation nozzle device is installed at the outer end of the nozzle air pipe, a heat-seal packaging device is installed on an upper box body, and heat-seal fixing frames are symmetrically installed on one side of the heat-seal packaging device; a heat-sealing upper pressing plate is slidably mounted on the heat-sealing fixing frame, an air cylinder limiting frame is mounted at the top end of the heat-sealing fixing frame, a lifting driving part is mounted on the air cylinder limiting frame, a heat-sealing lower pressing plate is correspondingly mounted at the bottom of the heat-sealing upper pressing plate, and a heating element is mounted in the heat-sealing lower pressing plate. When allochroic silicagel in the allochroic silicagel observation bin is changed from orange to moist, the internal moist condition can be observed in real time, the problems of high cost, complex operation, easiness in leakage, inconvenience in transportation and serious safety caused by gas supply of a traditional gas tank are solved, and the function of being started and used at any time is achieved.

Description

Technical Field

[0001] The invention relates to an agricultural product hydrogen conditioning, fresh-keeping and packaging integrated machine, belonging to the technical field of agricultural product packaging integrated machines. Background Art

[0002] Currently, modified atmosphere packaging (MAP) is widely used to preserve agricultural products, delaying spoilage and inhibiting microbial growth by regulating the levels of oxygen, nitrogen, and carbon dioxide within the package. However, existing equipment relies on external high-pressure gas cylinders, which are bulky, cumbersome to operate, require frequent replacement, waste gas, and pose safety risks. Furthermore, it lacks automation and intelligent monitoring throughout the entire process, making it difficult to meet the high efficiency, miniaturization, and safety requirements of modern retail and cold chain operations.

[0003] Studies have shown that hydrogen, as a reducing preservative gas, can significantly inhibit browning, oxidation and bacterial growth of fruits, vegetables, meat, aquatic products and high-fat foods, thereby extending their shelf life. However, there is no integrated commercial equipment that uses hydrogen as the sole gas source, produces hydrogen in situ through water electrolysis, and is deeply integrated with an automatic packaging system.

[0004] If equipment in traditional production needs to use hydrogen, it is often supplied through external cylinders or high-pressure gas tanks. Therefore, not only is the cost high and the operation complicated, but there are also serious safety issues such as easy leakage and inconvenient transportation.

[0005] At the same time, the existing packaging system has not yet established an effective dedicated safety control mechanism based on the characteristics of hydrogen, such as rapid diffusion and low ignition energy. As a result, the application of hydrogen has always remained in the laboratory or semi-industrial stage and lacks practical products.

[0006] Therefore, an agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine is designed to solve the above problems. Summary of the Invention

[0007] The main purpose of the present invention is to provide an integrated machine for hydrogen conditioning, fresh-keeping and packaging of agricultural products.

[0008] The purpose of the present invention can be achieved by adopting the following technical solutions: An integrated hydrogen conditioning and fresh-keeping packaging machine for agricultural products, comprising an upper box body, a lower box body and a dust cover for sealing and limiting, wherein the upper box body is mounted on one side of the lower box body and the upper box body is covered with a dust cover; A gas generating component is installed in the lower box; Pneumatic components are installed in the upper box body and the dust cover; A hot melt component is installed at the outer end of the pneumatic component; The air source components are installed on the outside of the lower box; A moving limit component is installed at the bottom of the lower box; A cutting component is installed on the outer side of the lower box body.

[0009] Preferably, the gas generating component includes a hydrogen generating device, a hydrogen flow detector, a gas purification device, a hydrogen flow control unit and a gas buffer chamber; A hydrogen generator, a hydrogen flow detector, a gas purification device, a hydrogen flow control unit and a gas buffer chamber are installed in the upper box respectively. The gas buffer chamber is connected to the hydrogen flow detector, and the hydrogen flow control unit and the gas purification device are installed on the hydrogen flow detector. The hydrogen generator is installed at the outer end of the hydrogen flow control unit.

[0010] Preferably, the pneumatic components include an air-filling nozzle device, a nozzle air pipe, a nozzle air pipe fixing plate, a nozzle moving track and a nozzle sliding plate; A nozzle moving track is installed in the middle of one side of the heat-sealing packaging device on the top of the upper box body, a nozzle sliding plate is installed in the middle of the nozzle moving track, a nozzle air pipe fixing plate is installed at the other end of the nozzle sliding plate, a nozzle air pipe is installed on the axis of the nozzle air pipe fixing plate, and an inflation nozzle device is installed at the outer end of the nozzle air pipe.

[0011] Preferably, the hot melt component includes a heat sealing packaging device, a heat sealing fixing frame, a heat sealing upper pressing plate, a heat sealing lower pressing plate, a heating element, a lifting and swinging connecting frame and a cylinder limiting frame; A heat sealing packaging device is installed on the upper box body, a heat sealing fixing frame is symmetrically installed on one side of the heat sealing packaging device, a heat sealing upper pressure plate is slidably installed on the heat sealing fixing frame, a cylinder limit frame is installed on the top of the heat sealing fixing frame, a lifting drive component is installed on the cylinder limit frame, a heat sealing lower pressure plate is correspondingly installed at the bottom of the heat sealing upper pressure plate, and a heating element is installed in the heat sealing lower pressure plate.

[0012] A lifting and swinging connecting frame is installed on the heat sealing upper pressing plate.

[0013] Preferably, the air source component includes an air source filter device, a pressure regulating valve and an external air source port. The air source filter device is installed on one side of the upper box body, the external air source port is installed on one side of the air source filter device, and the pressure regulating valve is installed on one side of the external air source port.

[0014] Preferably, the movable limiting component includes a movable roller and a damping member, the four corners of the lower box body are respectively installed with movable rollers, and the damping member is installed on the inner side of the movable roller.

[0015] Preferably, the cutting component comprises an adjustable cutting device, a cutting plate, a lower cutting frame, an upper cutting knife and an electric lifting rod; An adjustable cutting device is installed on one side of the lower box body, a cutting plate is installed at the bottom of the adjustable cutting device, a lower cutting frame is installed on the cutting plate, an electric lifting rod is symmetrically installed on the upper inner side of the adjustable cutting device, an upper cutting knife is installed at the output end of the electric lifting rod, and the upper cutting knife is docked with the lower cutting frame.

[0016] Preferably, a hydrogen flow control unit is installed on the lower box body, heat dissipation ports are distributed on the lower box body, a color-changing silica gel observation chamber is installed on one side of the lower box body, a hydrogen flow warning light is installed on one side of the lower box body, a liftable packaging operation platform is installed on one side of the upper box body, and a lifting operation button is installed on one side of the pressure regulating valve.

[0017] Preferably, the hydrogen generator, hydrogen flow detector, gas purification device, hydrogen flow control unit and gas buffer chamber are interconnected by pipes, a protective door is installed on one side of the lower box body, an operation panel is installed on one side of the upper box body, and a brake start button is installed on one side of the operation panel.

[0018] Beneficial technical effects of the present invention: The present invention provides an integrated hydrogen conditioning and fresh-keeping packaging machine for agricultural products. The hydrogen generating device is installed in a lower box cabinet. A protective door is hinged on one side of the lower box. By opening the protective door, the staff can observe whether the gas guide of the hydrogen generating device is leaking and whether the internal equipment is in working condition. The lower box air inlet and outlet are opened at the lower outer side of the hydrogen generating device. The air outlets are connected to a gas purification device through pipes. The figure shows a color-changing silica gel observation chamber in the external window of the lower box. When the color-changing silica gel in the color-changing silica gel observation chamber is blue, it is dry. When the color-changing silica gel in the color-changing silica gel observation chamber turns orange, it is wet, so real-time observation of the internal humidity can be achieved.

[0019] To determine whether the color-changing silica gel inside the color-changing silica gel observation chamber needs to be replaced, hydrogen is generated by a hydrogen generator. The gas generated by the hydrogen generator is filtered and detected by a hydrogen flow detector, a gas purification device, a hydrogen flow control unit and a gas buffer chamber. The gas purification device is internally provided with a micro control unit and a line transmission connection with a hydrogen flow detector for monitoring the hydrogen flow, and the detected data is fed back to the hydrogen flow control unit through a wired data transmission component. As shown in the figure, when the hydrogen flow is abnormal, the hydrogen flow warning light sounds an alarm, and the produced hydrogen flows to the gas buffer chamber for storage, avoiding the traditional gas cylinder supply, which not only has high costs and complicated operations, but also has serious safety problems such as easy leakage and inconvenient transportation, and realizes the function of start-up and use.

[0020] The inflation nozzle device is installed in the middle of the upper end of the outer side of the upper box body, the nozzle air pipe is fixed to the nozzle sliding plate through the nozzle air pipe fixing plate, the nozzle sliding plate is slidingly arranged on the inner side of the nozzle moving track, and the tail of the nozzle moving track is connected to a small cylinder to drive the horizontal movement back and forth. The packaging bag passes through the cutting device through the cutting plate, the lower cutting frame, the upper cutting knife and the electric lifting rod to cut a small opening and then is placed on the hot melt mouth of the heat sealing packaging device. A heat sealing fixing frame is installed on one side of the heat sealing device, and the heat sealing packaging device is installed on the upper box body through a connecting piece. The heat sealing lower pressure plate is installed at the connection between the upper box body and the liftable packaging operating platform by screws. The packaging bag mouth is laid flat on the heat sealing lower pressure plate and the nozzle air pipe on the inflation nozzle device is extended into the packaging bag through the driving part. Press the brake start button, and the sealing pressure plate is driven by the slide rail and the driving part such as the motor. Move downward and press, the heating element is installed in the heat-sealing lower pressure plate, located in the middle of the lower pressure plate rubber strip, the heating element heats the packaging bag mouth through electric heating, the air source filter device is connected to the nozzle air pipe through the air pipe, the air pipe connection, the air source filter device is a standard part, with a filter screen inside, the three-way solenoid valve and the vacuum generator are arranged inside the upper box, the air source filter device is connected to the vacuum generator and the pressure regulating valve respectively through the three-way solenoid valve, the pressure regulating valve is connected to the gas buffer chamber through the air pipe, and a vacuum device is installed on the inflation nozzle device. After the vacuum generator works to extract the air in the packaging bag, hydrogen is passed into the packaging bag through the nozzle air pipe. After the inflation is completed, the nozzle air pipe is driven to move backward by driving parts such as electric telescopic rods and cylinders. After the packaging bag mouth is heat-sealed, the heat-sealing upper pressure plate is lifted to realize the functions of rapid gas injection and hot melt sealing.

[0021] The above structure realizes vacuuming, hydrogen injection, hot melting and cutting in one structure, is simple to operate, occupies a small area, and is easy to move and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a preferred embodiment of an agricultural product hydrogen conditioning, fresh-keeping and packaging integrated machine according to the present invention; Figure 2 It is a three-dimensional side view of a preferred embodiment of an agricultural product hydrogen conditioning, fresh-keeping and packaging integrated machine according to the present invention; Figure 3 This is a schematic diagram of the heat-sealing structure of the upper box of a preferred embodiment of an agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to the present invention; Figure 4 This is a schematic diagram of the structure inside the lower box of a preferred embodiment of an agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to the present invention; Figure 5 This is a schematic diagram of the heat-sealing structure inside the upper box of a preferred embodiment of an agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to the present invention; Figure 6This is a schematic diagram of a pressure regulating valve according to a preferred embodiment of an agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine of the present invention; Figure 7 This is a schematic diagram of the heat sealing structure of a preferred embodiment of an agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to the present invention; Figure 8 This is a schematic diagram of the cutting component structure of a preferred embodiment of an agricultural product hydrogen conditioning, fresh-keeping and packaging integrated machine according to the present invention; Figure 9 This is a three-dimensional schematic diagram of the internal structure of the lower box of a preferred embodiment of an agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to the present invention; Figure 10 This is a schematic diagram of the lower shell structure of a preferred embodiment of an agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to the present invention.

[0023] In the figure: 1. Upper box; 2. Lower box; 3. Dust cover; 4. Hydrogen generator; 5. Hydrogen flow detector; 6. Gas purification device; 61. Color-changing silica gel observation chamber; 7. Hydrogen flow control unit; 71. Hydrogen flow warning light; 8. Gas buffer chamber; 9. Inflatable nozzle device; 91. Nozzle air pipe; 92. Nozzle air pipe fixing plate; 93. Nozzle moving track; 94. Nozzle sliding plate; 10. Air source filter device; 11. Liftable packaging operation platform; 111 lifting operation button; 12. Adjustable cutting device; 121. Cutting plate; 122. Lower cutting frame; 123. Upper cutting knife; 124. Electric lifting rod; 13. Pressure regulating valve; 14. Protective door; 15. Operation panel; 16. Brake start button; 17. Moving roller; 18. Heat-sealing packaging device; 181. Heat-sealing fixed frame; 182. Heat-sealing upper pressing plate; 183. Heat-sealing lower pressing plate; 184. Heating element; 185. Lifting and swinging connecting frame; 20. External gas source port; 211. Damping element; 212. Heat dissipation vent. DETAILED DESCRIPTION

[0024] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below with reference to embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0025] Example 1: Figure 1 - Figure 10As shown, this embodiment provides an agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine, the upper box body 1 is arranged on the upper end of the lower box body 2, the upper box body 1 and the lower box body 2 are assembled, the upper box body 1 and the lower box body 2 are installed with a circuit board on the inner shell, the hydrogen generator 4, the hydrogen flow detector 5, the gas purification device 6, the hydrogen flow control unit 7 and the gas buffer chamber 8 are connected by a ventilation pipe, the dust cover 3 is installed on the upper box body 1 and is installed on the top by screws or connecting plates, and a handle is provided on the side of the upper box body 1. Figure 10 It can be seen from above that the protective door 14 is a transparent observation window.

[0026] from Figure 10 It can be seen from the above that the hydrogen generator 4 is installed in the cabinet of the lower box body 2. A protective door 14 is hinged on one side of the lower box body 2. The staff can observe whether the gas guide of the hydrogen generator 4 is leaking and whether the internal equipment is in working condition by opening the protective door 14. Figure 4 As shown, the lower box body gas inlet and outlet are opened at the lower side of the hydrogen generating device 4, and the gas outlet is connected to the gas purification device 6 through pipe fittings. Figure 10 It can be seen that the color-changing silica gel observation chamber 61 is visible in the outer window of the lower box body 2. When the color-changing silica gel in the color-changing silica gel observation chamber 61 is blue, it is dry. When the color-changing silica gel in the color-changing silica gel observation chamber 61 turns orange, it is wet.

[0027] To determine whether the color-changing silica gel inside the color-changing silica gel observation chamber 61 needs to be replaced, hydrogen is generated by the hydrogen generator 4. The gas generated by the hydrogen generator 4 is filtered and detected by the hydrogen flow detector 5, the gas purification device 6, the hydrogen flow control unit 7 and the gas buffer chamber 8. The gas purification device 6 is connected to the hydrogen flow detector 5 through an internal micro control unit and a wired transmission to monitor the hydrogen flow and feed back the detected data to the hydrogen flow control unit through the wired data transmission component. Figure 5 As shown, when the hydrogen flow rate is abnormal, the hydrogen flow rate warning light 71 sounds an alarm, and the produced hydrogen flows into the gas buffer chamber 8 for storage.

[0028] like Figure 5As shown, the inflation nozzle device 9 is installed in the middle of the upper end of the outer side of the upper box body 1, and the nozzle air pipe 91 is fixed on the nozzle sliding plate 94 through the nozzle air pipe fixing plate 92. The nozzle sliding plate 94 is slidably arranged on the inner side of the nozzle moving track 93. The tail of the nozzle moving track 93 is connected to a small cylinder to drive the horizontal movement back and forth. The packaging bag passes through the cutting device 12 through the cutting plate 121, the lower cutting frame 122, the upper cutting knife 123 and the electric lifting rod 124 to cut a small opening and is placed on the hot melt mouth of the heat sealing packaging device 18. A heat sealing fixing frame 181 is installed on one side of the heat sealing device 18. The heat sealing packaging device 18 is installed on the upper box body 1 through a connecting piece. The heat sealing lower pressure plate 183 is installed at the connection between the upper box body 1 and the liftable packaging operation platform 11 by screws. The packaging bag mouth is laid flat on the heat sealing lower pressure plate 183 and the nozzle air pipe 91 on the inflation nozzle device 9 is extended into the packaging bag through the driving member. Press the brake start button 16, as Figure 8 As shown, the upper sealing plate 182 is driven by a slide rail and a driving member such as a motor to move downward, and the heating element 184 is installed in the heat sealing lower pressing plate 183, located in the middle of the lower pressing plate rubber strip. The heating element 184 heats the packaging bag opening by electric heating, as shown in FIG. Figure 1 The air source filter device 10 is connected to the nozzle air pipe 91 through an air pipe. The air source filter device is a standard part with a filter screen inside. The three-way solenoid valve and the vacuum generator are arranged inside the upper box. The air source filter device 10 is connected to the vacuum generator and the pressure regulating valve 13 respectively through the three-way solenoid valve. The pressure regulating valve 13 is connected to the gas buffer chamber 8 through the air pipe. Figure 5 As shown, a vacuum device is installed on the inflation nozzle device 9. After the vacuum generator works to extract the air in the packaging bag, hydrogen is introduced into the packaging bag through the nozzle air pipe 91. After the inflation is completed, the nozzle air pipe 91 is driven to move backward by a driving member such as an electric telescopic rod and a cylinder. After the packaging bag mouth is heat-sealed, the heat-sealing upper pressure plate 182 is lifted.

[0029] The operation panel 15 is installed on the right side of the upper box body 1, and can be used to set the vacuum time, which can be set according to the size of the pocket, generally between 1 and 5 minutes, and the hydrogen flow rate, hydrogen flow time, and heat sealing time can be adjusted according to the thickness of the pocket, generally between 0.5 and 1 minute, etc. The liftable packaging operation platform 11 is installed at the front end of the upper box body 1, and is vertically moved up and down by the motor-driven vertical lifting and the slide rail. The lifting operation button 111 is used to control the lifting position of the lowering work platform device 11.

[0030] The external gas source port 20 is used to connect to an external gas source when other gases need to be injected, which can realize multi-gas mixed inflation packaging. The four moving rollers 17 are installed at the bottom of the lower box 2 and are braked by the damping member 211 to facilitate the movement of the controlled atmosphere fresh-keeping packaging machine.

[0031] The above is only a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which fall within the scope of protection of the present invention.

Claims

1. An integrated hydrogen conditioning and fresh-keeping packaging machine for agricultural products, comprising an upper box body (1), a lower box body (2) and a dust cover (3) for sealing and limiting, characterized in that: An upper box body (1) is installed on one side of the lower box body (2), and a dust cover (3) is covered on the upper box body (1); A gas generating component is installed in the lower box (2); Pneumatic components are installed in the upper box body (1) and the dust cover (3); A hot melt component is installed at the outer end of the pneumatic component; An air source component is installed on the outside of the lower box (2); A movable limiting component is installed at the bottom of the lower box body (2); A cutting component is installed on the outside of the lower box body (2).

2. The agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to claim 1, characterized in that: The gas generating component includes a hydrogen generating device (4), a hydrogen flow detector (5), a gas purification device (6), a hydrogen flow control unit (7) and a gas buffer chamber (8); A hydrogen generating device (4), a hydrogen flow detector (5), a gas purification device (6), a hydrogen flow control unit (7) and a gas buffer chamber (8) are respectively installed in the upper box body (1); the gas buffer chamber (8) is connected to the hydrogen flow detector (5); the hydrogen flow control unit (7) and the gas purification device (6) are installed on the hydrogen flow detector (5); and the hydrogen generating device (4) is installed at the outer end of the hydrogen flow control unit (7).

3. The agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to claim 1, characterized in that: Pneumatic components: an air-filling nozzle device (9), a nozzle air pipe (91), a nozzle air pipe fixing plate (92), a nozzle moving track (93), and a nozzle sliding plate (94); A nozzle moving track (93) is installed in the middle of one side of the heat-sealing packaging device (18) at the top of the upper box body (1), a nozzle sliding plate (94) is installed in the middle of the nozzle moving track (93), a nozzle air pipe fixing plate (92) is installed at the other end of the nozzle sliding plate (94), a nozzle air pipe (91) is installed at the axis of the nozzle air pipe fixing plate (92), and an inflation nozzle device (9) is installed at the outer end of the nozzle air pipe (91).

4. The agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to claim 3, characterized in that: The hot melt component includes a heat sealing packaging device (18), a heat sealing fixing frame (181), a heat sealing upper pressing plate (182), a heat sealing lower pressing plate (183), a heating element (184), a lifting and swinging connecting frame (185) and a cylinder limiting frame (189); A heat sealing packaging device (18) is installed on the upper box body (1), a heat sealing fixing frame (181) is symmetrically installed on one side of the heat sealing packaging device (18), a heat sealing upper pressing plate (182) is slidably installed on the heat sealing fixing frame (181), a cylinder limiting frame (189) is installed on the top of the heat sealing fixing frame (181), a lifting driving member is installed on the cylinder limiting frame (189), a heat sealing lower pressing plate (183) is correspondingly installed on the bottom of the heat sealing upper pressing plate (182), and a heating element (184) is installed in the heat sealing lower pressing plate (183); A lifting and swinging connecting frame (185) is installed on the heat-sealing upper pressing plate (182).

5. The agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to claim 3, characterized in that: The air source component comprises an air source filter device (10), a pressure regulating valve (13) and an external air source port (20); the air source filter device (10) is installed on one side of the upper box body (1); the external air source port (20) is installed on one side of the air source filter device (10); and the pressure regulating valve (13) is installed on one side of the external air source port (20).

6. The agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to claim 1, characterized in that: The movable limiting component comprises a movable roller (17) and a damping member (211). The movable rollers (17) are respectively installed at the four corners of the lower box body (2), and the damping member (211) is installed on the inner side of the movable roller (17).

7. The agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to claim 6, characterized in that: The cutting component includes an adjustable cutting device (12), a cutting plate (121), a lower cutting frame (122), an upper cutting knife (123) and an electric lifting rod (124); An adjustable cutting device (12) is installed on one side of the lower box (2), a cutting plate (121) is installed at the bottom of the adjustable cutting device (12), a lower cutting frame (122) is installed on the cutting plate (121), an electric lifting rod (124) is symmetrically installed on the upper inner side of the adjustable cutting device (12), an upper cutting knife (123) is installed at the output end of the electric lifting rod (124), and the upper cutting knife (123) is docked with the lower cutting frame (122).

8. The agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to claim 8, characterized in that: A hydrogen flow control unit (7) is installed on the lower box (2), heat dissipation ports (212) are distributed on the lower box (2), a color-changing silica gel observation chamber (61) is installed on one side of the lower box (2), a hydrogen flow warning light (71) is installed on one side of the lower box (2), a liftable packaging operation platform (11) is installed on one side of the upper box (1), and a lift operation button (111) is installed on one side of the pressure regulating valve (13).

9. The agricultural product hydrogen conditioning and fresh-keeping packaging integrated machine according to claim 2, characterized in that: The hydrogen generating device (4), the hydrogen flow detector (5), the gas purification device (6), the hydrogen flow control unit (7) and the gas buffer chamber (8) are interconnected by pipelines. A protective door (14) is installed on one side of the lower box body (2), an operation panel (15) is installed on one side of the upper box body (1), and a brake start button (16) is installed on one side of the operation panel (15).

Images