Antioxidation device for fresh keeping of lotus roots

Abstract

The utility model discloses an anti-oxidation device for lotus root preservation, and aims to solve the problems that lotus roots are easy to deteriorate and rot after being picked, the refrigeration preservation cost is high, chemical preservation is easy to remain, long-term preservation and green consumption are not facilitated, and the like in the prior art, the following scheme is provided: the anti-oxidation device comprises a lower box body, and a conveyor belt is fixedly arranged in the lower box body; according to the fresh-keeping and anti-oxidation device for the lotus roots, the far infrared heat energy equipment is used for improving the quality of the lotus roots, the ultraviolet lamp set is used for enhancing the fresh-keeping effect, chemical fresh-keeping agents are not needed, and the fresh-keeping and anti-oxidation device for the lotus roots has the advantages that the fresh-keeping and anti-oxidation effects are improved; the cost is low; the height of the net-shaped limiting plate driven by the cylinder can be finely adjusted according to the size of the lotus roots, tiling treatment is ensured, and uneven stacking is avoided; on the whole, the device is efficient, environment-friendly, flexible and easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of lotus root preservation technology, and in particular to an antioxidant device for lotus root preservation. Background Technology

[0002] Lotus root, a nutritious and crisp ingredient, is widely loved by consumers in daily life. However, current technologies for storing fresh lotus root still present the following problems:

[0003] After harvesting, lotus roots, due to their high water and starch content, are prone to spoilage and rotting during storage, affecting their quality and food safety. Currently, methods such as refrigeration and chemical preservatives are commonly used to extend the shelf life of lotus roots. However, these methods are costly and may introduce chemical residues, which are not conducive to the long-term preservation and green consumption of lotus roots.

[0004] To address the aforementioned problems, this utility model document proposes an antioxidant device for preserving lotus root. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the ease with which lotus roots spoil and rot after harvest, high costs of cold storage and preservation, and the tendency for chemical preservation to leave residues, which are not conducive to long-term storage and green consumption. Therefore, this invention proposes an antioxidant device for the preservation of lotus roots.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An antioxidant device for preserving lotus root includes:

[0008] The lower box has a conveyor belt fixedly installed inside it, and the conveyor belt is located near the opening at the top of the lower box. An upper box is fixedly installed on the top of the lower box, and inlet and outlet ports are opened on both sides of the upper box. The upper box cooperates with the conveyor belt to form a heating chamber and a disinfection chamber inside it. The heating chamber and the disinfection chamber are connected to each other and are connected to the adjacent inlet and outlet ports.

[0009] It also includes far-infrared thermal energy equipment and ultraviolet lamp assembly. Both the far-infrared thermal energy equipment and the ultraviolet lamp assembly are fixedly connected to the top inner wall of the upper box. The far-infrared thermal energy equipment is located in the heating chamber, and the ultraviolet lamp assembly is located in the disinfection chamber. The far-infrared thermal energy equipment is used to radiate and penetrate the lotus root entering the heating chamber, and the ultraviolet lamp assembly is used to irradiate the lotus root entering the disinfection chamber with ultraviolet light to kill bacteria and viruses on the surface and inside of the lotus root.

[0010] It also includes a first movable door panel, a second movable door panel, and a third movable door panel. The top of the upper box has three through slots. One end of the first, second, and third movable door panels slides through the corresponding through slots. The third movable door panel is used to separate the heating chamber and the disinfection chamber. The first and second movable door panels are used to close the inlet and outlet ports at both ends of the upper box. The first, second, and third movable door panels are also used to block the lotus roots placed on the conveyor belt, so that they stay in the corresponding area inside the upper box.

[0011] It also includes two sets of limiting components, which are used to limit the position of multiple lotus roots placed in the heating chamber and the disinfection chamber, respectively, to ensure that they can be evenly laid on the conveyor belt.

[0012] In a preferred embodiment of this utility model, the limiting component includes a bracket fixedly installed on the top of the upper box. A cylinder is fixedly installed on the top of the bracket. One end of the piston rod of the cylinder slides through the bracket and is fixedly installed with a connecting frame. The connecting frame is located inside the bracket. Four movable tubes pass through the interior of the connecting frame. Each of the four movable tubes has a collar rotatably fitted at its top end. Each of the four movable tubes has a spring fitted on its outer wall. One end of each of the four springs is fixedly connected to the top of the connecting frame, and the other end of each of the four springs is fixedly connected to the bottom of an adjacent collar. The bottom ends of each of the four movable tubes pass through the top of the upper box and extend into the upper box. Each of the four movable tubes has a connecting rod inside. Multiple connecting rods cooperate with the inner wall of the corresponding movable tube. One end of each of the four connecting rods passes through one end of the corresponding movable tube and is fixedly installed with the same mesh limiting plate. The mesh limiting plates are located below the corresponding far-infrared thermal energy equipment and ultraviolet lamp group. The mesh limiting plates cooperate with the conveyor belt to ensure that multiple lotus roots can be laid flat on the conveyor belt and to prevent them from stacking.

[0013] In a preferred embodiment of this utility model, the limiting component further includes a thread on the outer wall of one of the connecting rods, and the inner wall of the moving tube that cooperates with it is provided with a corresponding thread. The threaded connecting rod and the corresponding moving tube are connected by the thread, and the other multiple connecting rods are slidably engaged with the inner wall of the corresponding moving tube for positioning the mesh limiting plate and fine-tuning its height.

[0014] In a preferred embodiment of this utility model, a handwheel is fixedly installed at the top of the movable tube, which has internal threads. The handwheel is used to facilitate the user to rotate the corresponding connecting rod to make fine adjustments to the height of the mesh limiting plate inside the upper box.

[0015] In a preferred embodiment of this utility model, the first movable door panel, the second movable door panel, and the third movable door panel have the same structure, each consisting of a baffle and a fixing plate. The bottom end of each baffle is engaged with the conveyor belt, and the fixing plate is fixedly installed on the top of the baffle. The fixing plate is located outside the upper housing, and both ends of the fixing plate extend to both sides of the upper housing to facilitate the user in lifting the baffle.

[0016] In a preferred embodiment of this utility model, two observation windows are provided on one side of the upper housing. The two observation windows correspond to the heating chamber and the disinfection chamber, respectively, and are used to observe the interior of the heating chamber and the disinfection chamber.

[0017] In this application, during use, the user first inserts the second and third movable door panels into the upper chamber from above. Then, the user places multiple lotus roots (after washing and drying) onto the conveyor belt. The user then starts the conveyor belt, which transports the lotus roots into the heating chamber. Simultaneously, the user can activate a cylinder while the conveyor belt is transporting the lotus roots. The cylinder pushes the connecting frame downwards, causing the mesh limiting plate to descend synchronously within the upper chamber. After descent, the distance between the mesh limiting plate and the top of the conveyor belt is only enough for one lotus root to pass through. As the conveyor belt continues to run, the first lotus root to enter the heating chamber is intercepted by the third movable door panel. At this point, multiple lotus roots can pass through the mesh limiting plate. The lotus roots are laid flat on the conveyor belt under restraint, preventing stacking between multiple lotus roots. Users can also fine-tune the height of the mesh limiting plate according to the actual size of the lotus roots to be processed. This is achieved by turning the corresponding handwheel externally, which drives the corresponding moving tube to rotate, thus retracting and extending the connecting rod. Since the other connecting rods are also limited by their respective moving tubes, the overall height of the mesh limiting plate can be fine-tuned by changing the extension degree of one connecting rod. Afterwards, the user can insert the first movable door panel into the upper chamber to seal it, then turn off the conveyor belt and start the far-infrared heating equipment. The far-infrared heating equipment continuously provides far-infrared heating to the lotus roots laid flat in the heating chamber. External irradiation; far-infrared radiation and penetration of heat energy are applied to lotus roots, achieving temperature control and resonance effects. This removes some moisture, activates water molecules, strengthens molecular binding forces, and activates proteins, ensuring quality and extending shelf life. The heating temperature in the far-infrared heat energy equipment is 90±5℃, and the time is 6 minutes. After treatment, the user can remove the third movable door and restart the conveyor belt. The conveyor belt will transport the far-infrared treated lotus roots from the heating chamber to the disinfection chamber. Simultaneously, the user can open the first movable door and place a new batch of lotus roots into the heating chamber. Once all the far-infrared treated lotus roots have entered the disinfection chamber, the user should promptly insert the third movable door back into the upper chamber to disinfect the new batch. The lotus roots are blocked off; then, following the above principles and operations, multiple lotus roots can be laid flat in the heating and disinfection chambers; next, the user can simultaneously activate the far-infrared heat energy equipment and the ultraviolet lamp group. The far-infrared heat energy equipment can perform far-infrared treatment on the new batch of lotus roots again, and the ultraviolet lamp group can kill bacteria and viruses on the surface and inside of the lotus roots through ultraviolet irradiation, kill microorganisms on the surface of the lotus roots, and also produce a microbial stress effect through stimulation. In addition, the ozone generated by ultraviolet irradiation can also improve the preservation quality of lotus roots. The ultraviolet irradiation time is 3-5 minutes; finally, the second movable door is opened, and the conveyor belt can discharge the lotus roots that have completed the two-step processing, while new lotus roots can continue to be put into the upper chamber, which can complete the continuous processing of lotus roots.

[0018] The beneficial effects of this utility model are:

[0019] 1. By using far-infrared thermal energy equipment to radiate and penetrate lotus root, some moisture can be removed, molecular binding forces can be enhanced, and proteins can be activated, thereby improving the quality of lotus root and extending its shelf life. At the same time, ultraviolet lamps can kill bacteria and viruses on the surface and inside of lotus root, further improving the preservation effect. By relying on far-infrared and ultraviolet technologies, there is no need to use chemical preservatives, reducing environmental pollution and lowering preservation costs.

[0020] 2. By setting a cylinder to drive the mesh limit plate to move up and down, and the height can be finely adjusted according to the actual size of the lotus root, it can ensure that the lotus root can be laid flat on the conveyor belt and avoid uneven processing caused by stacking.

[0021] 3. By setting up a conveyor belt and multiple movable door panels, continuous processing of lotus roots is achieved, which improves work efficiency and is suitable for large-scale production; the design of multiple movable door panels makes the whole processing process more flexible and has a good sealing effect, which is conducive to the safe operation of operators.

[0022] 4. The observation windows on both sides of the upper chamber allow users to monitor the interior of the heating and sterilization chambers at any time, ensuring the smooth operation of the process;

[0023] 5. This lotus root preservation and anti-oxidation device utilizes far-infrared thermal energy to improve the quality of lotus roots, while ultraviolet lamps enhance the preservation effect. It eliminates the need for chemical preservatives, making it environmentally friendly and low-cost. The cylinder-driven mesh limiting plate can finely adjust its height according to the volume of the lotus roots, ensuring flat processing and avoiding uneven stacking. The conveyor belt and multiple movable door panels enable continuous processing of lotus roots, improving work efficiency and making it suitable for large-scale production. Overall, the device is efficient, environmentally friendly, flexible, and easy to operate. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of an antioxidant device for preserving lotus root proposed in this utility model.

[0025] Figure 2 This is a side view of an antioxidant device for preserving lotus root proposed in this utility model.

[0026] Figure 3 This is a schematic diagram of the lower and upper box structures of an antioxidant device for preserving lotus root proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the limiting component structure of an antioxidant device for preserving lotus root proposed in this utility model.

[0028] The attached diagram includes the following reference numerals: 1. Lower housing; 2. Upper housing; 3. Conveyor belt; 4. Heating chamber; 5. Disinfection chamber; 6. Inlet / outlet; 7. Through channel; 8. First movable door panel; 9. Second movable door panel; 10. Third movable door panel; 11. Baffle; 12. Fixing plate; 13. Far-infrared thermal energy equipment; 14. Ultraviolet lamp assembly; 15. Bracket; 16. Cylinder; 17. Observation window; 18. Connecting frame; 19. Moving tube; 20. Connecting rod; 21. Mesh limiting plate; 22. Collar; 23. Spring; 24. Handwheel. Detailed Implementation

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is 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. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0030] Example 1:

[0031] like Figure 1-4 As shown, this embodiment provides an antioxidant device, including: a lower box 1, an upper box 2, a conveyor belt 3, a heating chamber 4, a disinfection chamber 5, an inlet / outlet 6, a first movable door panel 8, a second movable door panel 9, a third movable door panel 10, and limiting components, etc.

[0032] In this embodiment, a conveyor belt 3 is fixedly installed inside the lower housing 1. The conveyor belt 3 is located near the opening at the top of the lower housing 1 and is used to carry and transport lotus roots. An upper housing 2 is fixedly installed on the top of the lower housing 1. The upper housing 2 cooperates with the conveyor belt 3 and has a heating chamber 4 and a disinfection chamber 5 inside. The heating chamber 4 and the disinfection chamber 5 are connected and are also connected to adjacent inlet and outlet ports 6. In this way, lotus roots can enter or leave the device through the inlet and outlet ports 6 and be processed sequentially through the heating chamber 4 and the disinfection chamber 5.

[0033] To heat and disinfect lotus roots, this embodiment also includes a far-infrared thermal energy device 13 and an ultraviolet lamp assembly 14. Both the far-infrared thermal energy device 13 and the ultraviolet lamp assembly 14 are fixedly connected to the top inner wall of the upper housing 2. The far-infrared thermal energy device 13 is located inside the heating chamber 4 and is used to radiate and penetrate heat energy into the lotus roots entering the heating chamber 4 to achieve a heating effect. The ultraviolet lamp assembly 14 is located inside the disinfection chamber 5 and is used to irradiate ultraviolet light onto the lotus roots entering the disinfection chamber 5 to kill bacteria and viruses on the surface and inside of the lotus roots. The far-infrared thermal energy device 13 and the ultraviolet lamp assembly 14 are identical to those in the patent with publication number CN221576767U.

[0034] To control the flow and residence of lotus roots within the device, this embodiment also includes a first movable door plate 8, a second movable door plate 9, and a third movable door plate 10. The top of the upper housing 2 has three through slots 7, and one end of each of the first, second, and third movable door plates 10 slides through a corresponding through slot 7. The third movable door plate 10 separates the heating chamber 4 from the sterilization chamber 5, while the first and second movable door plates 8 and 9 close the inlet / outlet ports 6 at both ends of the upper housing 2. Furthermore, the first, second, and third movable door plates 10 also block the lotus roots placed on the conveyor belt 3, causing them to remain within the corresponding areas of the upper housing 2.

[0035] To ensure the lotus roots are evenly distributed on the conveyor belt 3, this embodiment also includes two sets of limiting components. Each limiting component includes a bracket 15 fixedly installed on the top of the upper housing 2, and a cylinder 16 fixedly installed on the top of the bracket 15. One end of the piston rod of the cylinder 16 slides through the bracket 15 and is fixedly installed with a connecting frame 18, which is located inside the bracket 15. Four movable tubes 19 pass through the inside of the connecting frame 18, and each of the four movable tubes 19 has a collar 22 rotatably fitted at its top end, and a spring 23 is fitted on the outer wall of each of the four movable tubes 19. One end of the spring 23 is fixedly connected to the top of the connecting frame 18, and the other end is fixedly connected to the bottom of the adjacent collar 22. In this way, the spring 23 can provide support for the installation of the movable tubes 19 and the connecting frame 18.

[0036] Furthermore, the bottom ends of the four moving tubes 19 all penetrate the top of the upper housing 2 and extend into the upper housing 2. Each moving tube 19 has a connecting rod 20 inside, and multiple connecting rods 20 cooperate with the inner wall of the corresponding moving tube 19. One end of each of the four connecting rods 20 penetrates one end of the corresponding moving tube 19 and is fixedly installed with the same mesh limiting plate 21. The mesh limiting plate 21 is located below the corresponding far-infrared thermal energy device 13 and ultraviolet lamp group 14. When the piston rod of the cylinder 16 extends, it can drive the connecting frame 18 and the moving tubes 19 to move downwards, thereby driving the mesh limiting plate 21 downwards through the connecting rods 20, thus limiting the position of the multiple lotus roots placed on the conveyor belt 3 and ensuring that they are laid flat on the conveyor belt 3.

[0037] To position and fine-tune the height of the mesh limiting plate 21, this embodiment also provides threads on the outer wall of one of the connecting rods 20, and corresponding threads on the inner wall of the corresponding moving tube 19. The threaded connecting rod 20 is connected to the corresponding moving tube 19 by threads, while the other connecting rods 20 slide in contact with the inner wall of the corresponding moving tube 19. In this way, the user can adjust the height of the mesh limiting plate 21 by rotating the threaded connecting rod 20 to accommodate lotus roots of different sizes. To facilitate the user's rotation of the connecting rod 20, this embodiment also fixes a handwheel 24 to the top of the internally threaded moving tube 19.

[0038] This application can be used in the field of lotus root preservation technology, or in other fields applicable to this application.

[0039] Example 2:

[0040] refer to Figure 3 An improvement based on Example 1: an antioxidant device for lotus root preservation, which is applied to the field of lotus root preservation technology;

[0041] Furthermore, the first movable door panel 8, the second movable door panel 9, and the third movable door panel 10 in this embodiment have the same structure, each consisting of a baffle 11 and a fixing plate 12. The bottom end of the baffle 11 cooperates with the conveyor belt 3 to block the flow of lotus roots. The fixing plate 12 is fixedly installed on the top of the baffle 11, located outside the upper box 2, and both ends of the fixing plate 12 extend to both sides of the upper box 2, making it convenient for the user to lift the baffle 11.

[0042] To facilitate users' observation of the interior of the heating chamber 4 and the disinfection chamber 5, this embodiment also provides two observation windows 17 on one side of the upper housing 2, which correspond to the heating chamber 4 and the disinfection chamber 5 respectively.

[0043] However, as is well known to those skilled in the art, the working principle and wiring method of cylinder 16 are commonplace and are all conventional methods or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0044] The working principle of this technical solution is as follows: In use, the user first inserts the second movable door panel 9 and the third movable door panel 10 into the upper housing 2 from above. Then, the user places multiple lotus roots (after washing and drying) onto the conveyor belt 3. The user then starts the conveyor belt 3, which transports the lotus roots into the heating chamber 4. Simultaneously, the user can activate the cylinder 16 while the conveyor belt 3 is transporting the lotus roots. The cylinder 16 pushes the connecting frame 18 downwards, thereby causing the mesh limiting plate 21 to descend synchronously within the upper housing 2. After descent, the distance between the mesh limiting plate 21 and the top of the conveyor belt 3 is only... The conveyor belt 3 can accommodate one lotus root at a time. As the conveyor belt 3 continues to run, the lotus root that first enters the heating chamber 4 will be intercepted by the third movable door 10. At this time, multiple lotus roots can be laid flat on the conveyor belt 3 under the restriction of the mesh limiting plate 21, which can prevent the stacking of multiple lotus roots. At the same time, the user can also make fine adjustments to the height of the mesh limiting plate 21 according to the actual size of the lotus root to be processed. At this time, the user only needs to turn the corresponding handwheel 24 externally. The handwheel 24 can drive the corresponding moving tube 19 to rotate, thereby completing the retraction and extension of the corresponding connecting rod 20. Since the other connecting rods 20 are all through the corresponding moving tubes... 19. Once the limiting position is achieved, the overall height of the mesh limiting plate 21 can be finely adjusted by changing the extension degree of one of the connecting rods 20. Afterwards, the user can insert the first movable door panel 8 into the upper box 2 to seal it. Then, the conveyor belt 3 is turned off, and the far-infrared heat energy device 13 is activated. The far-infrared heat energy device 13 can continuously irradiate the lotus roots laid flat in the heating chamber 4 with far-infrared light. Through the heat radiation and penetration of far-infrared light on the lotus roots, temperature control and resonance effects can be achieved, removing a certain amount of moisture, activating water molecules, enhancing molecular bonding, activating proteins, ensuring their quality, and thus extending the preservation effect. The heating temperature in the far-infrared thermal energy device 13 is 90±5℃, and the time is 6 minutes. After the treatment is completed, the user can remove the third movable door panel 10 and then start the conveyor belt 3 again. The conveyor belt 3 can transport the lotus root that has been treated with far-infrared technology in the heating chamber 4 to the disinfection chamber 5. At the same time, the user can open the first movable door panel 8 and put a new batch of lotus root into the heating chamber 4. After all the lotus root that has been treated with far-infrared technology has entered the disinfection chamber 5, the user should promptly insert the third movable door panel 10 back into the upper box 2 to block the new batch of lotus root. After that, according to the above principle and operation, multiple lotus roots can be laid flat in the heating chamber 4 and the disinfection chamber 5.Next, the user can simultaneously activate the far-infrared heat energy device 13 and the ultraviolet lamp group 14. The far-infrared heat energy device 13 can perform a second far-infrared treatment on the new batch of lotus roots, while the ultraviolet lamp group 14 can kill bacteria and viruses on the surface and inside of the lotus roots through ultraviolet irradiation, kill microorganisms on the surface of the lotus roots, and also induce microbial stress through stimulation. Furthermore, the ozone generated by ultraviolet irradiation can improve the preservation quality of the lotus roots. The ultraviolet irradiation time is 3-5 minutes. Finally, the second movable door panel 9 is opened, and the conveyor belt 3 can discharge the lotus roots that have completed the two-step processing. At the same time, new lotus roots can continue to be placed into the upper box 2, which can complete the continuous processing of lotus roots.

[0045] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An antioxidant device for preserving lotus root, characterized in that, include: The lower box (1) is equipped with a conveyor belt (3) fixedly installed inside the lower box (1). The conveyor belt (3) is located near the opening at the top of the lower box (1). The upper box (2) is fixedly installed on the top of the lower box (1). The upper box (2) has inlet and outlet ports (6) on both sides. The upper box (2) cooperates with the conveyor belt (3) to form a heating chamber (4) and a disinfection chamber (5) inside. The heating chamber (4) and the disinfection chamber (5) are connected. The heating chamber (4) and the disinfection chamber (5) are both connected to the adjacent inlet and outlet ports (6). It also includes a far-infrared thermal energy device (13) and an ultraviolet lamp group (14), both of which are located inside the upper box (2) and are used to complete the processing of lotus root. It also includes a first movable door panel (8), a second movable door panel (9) and a third movable door panel (10), which are all in conjunction with the upper box (2) to block the lotus root placed on the conveyor belt (3) and keep it in the corresponding area inside the upper box (2); It also includes two sets of limiting components, which are used to limit the position of multiple lotus roots placed in the heating chamber (4) and the disinfection chamber (5) respectively, so as to ensure that they can be evenly laid on the conveyor belt (3).

2. The antioxidant device for preserving lotus root according to claim 1, characterized in that, The far-infrared thermal energy device (13) and the ultraviolet lamp group (14) are both fixedly connected to the top inner wall of the upper box (2). The far-infrared thermal energy device (13) is located in the heating chamber (4), and the ultraviolet lamp group (14) is located in the disinfection chamber (5). The far-infrared thermal energy device (13) is used to radiate and penetrate the lotus root that enters the heating chamber (4). The ultraviolet lamp group (14) is used to irradiate the lotus root that enters the disinfection chamber (5) with ultraviolet light to kill bacteria and viruses on the surface and inside of the lotus root.

3. The antioxidant device for preserving lotus root according to claim 1, characterized in that, The top of the upper box (2) is provided with three through slots (7). One end of the first movable door panel (8), the second movable door panel (9) and the third movable door panel (10) slide through the corresponding through slots (7). The third movable door panel (10) is used to separate the heating chamber (4) and the disinfection chamber (5). The first movable door panel (8) and the second movable door panel (9) are used to close the inlet and outlet ports (6) at both ends of the upper box (2).

4. The antioxidant device for preserving lotus root according to claim 2, characterized in that, The limiting assembly includes a bracket (15) fixedly installed on the top of the upper housing (2). A cylinder (16) is fixedly installed on the top of the bracket (15). One end of the piston rod of the cylinder (16) slides through the bracket (15) and is fixedly installed with a connecting frame (18). The connecting frame (18) is located inside the bracket (15). Four moving tubes (19) pass through the inside of the connecting frame (18). The top end of each of the four moving tubes (19) is rotatably fitted with a collar (22). The outer wall of each of the four moving tubes (19) is fitted with a spring (23). One end of each of the four springs (23) is fixedly connected to the top of the connecting frame (18), and the other end of each of the four springs (23) is connected to the adjacent collar (22). The bottom of the four moving tubes (19) are fixedly connected. The bottom ends of the four moving tubes (19) penetrate the top of the upper box (2) and extend into the upper box (2). The interior of each of the four moving tubes (19) is provided with a connecting rod (20). The multiple connecting rods (20) cooperate with the inner wall of the corresponding moving tube (19). One end of each of the four connecting rods (20) penetrates one end of the corresponding moving tube (19) and is fixedly installed with the same mesh limiting plate (21). The mesh limiting plate (21) is located below the corresponding far-infrared thermal energy device (13) and ultraviolet lamp group (14). The mesh limiting plate (21) cooperates with the conveyor belt (3) to ensure that multiple lotus roots can be laid flat on the conveyor belt (3) to avoid them from stacking.

5. The antioxidant device for preserving lotus root according to claim 4, characterized in that, The limiting component also includes a thread on the outer wall of one of the connecting rods (20), and the inner wall of the moving tube (19) that cooperates with it is provided with a corresponding thread. The connecting rod (20) with the thread is connected to the corresponding moving tube (19) by the thread. The other connecting rods (20) are all slidably engaged with the inner wall of the corresponding moving tube (19) for positioning the mesh limiting plate (21) and fine-tuning its height.

6. The antioxidant device for preserving lotus root according to claim 5, characterized in that, A handwheel (24) is fixedly installed at the top of the movable tube (19) with internal threads. The handwheel (24) is used to facilitate the user to rotate the corresponding connecting rod (20) to make fine adjustments to the height of the mesh limiting plate (21) inside the upper box (2).

7. The antioxidant device for preserving lotus root according to claim 3, characterized in that, The first movable door panel (8), the second movable door panel (9), and the third movable door panel (10) have the same structure. They are all composed of a baffle (11) and a fixing plate (12). The bottom end of the baffle (11) is matched with the conveyor belt (3). The fixing plate (12) is fixedly installed on the top of the baffle (11). The fixing plate (12) is located outside the upper box (2). Both ends of the fixing plate (12) extend to both sides of the upper box (2) to facilitate the user to lift the baffle (11).

8. The antioxidant device for preserving lotus root according to claim 1, characterized in that, Two observation windows (17) are provided on one side of the upper housing (2). The two observation windows (17) correspond to the heating chamber (4) and the disinfection chamber (5) respectively. The two observation windows (17) are used to observe the interior of the heating chamber (4) and the disinfection chamber (5) respectively.

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