Perishable packaged food fresh-keeping device based on low-temperature plasma

Abstract

The utility model relates to the technical field of packaged food preservation, and discloses a perishable packaged food preservation device based on low-temperature plasmas, which comprises an outer frame, sliding chutes are arranged on the front side and the rear side of the interior of the outer frame, plasma plates are connected to the front side and the rear side of the interior of the outer frame in a sliding manner, and the plasma plates are arranged in the sliding chutes. Butt joint plates are fixedly connected to the far sides of the two plasma plates, rotating columns are rotationally connected to the left sides and the right sides of the interiors of the two butt joint plates, clamping plates are fixedly connected to the close sides of the multiple rotating columns, and multiple sliding rods are slidably connected to the interior of the outer frame; the close sides of the multiple sliding rods are fixedly connected with limiting discs correspondingly, and the multiple sliding rods are sleeved with springs correspondingly. According to the utility model, the sliding disc is extruded to compress the spring, then the rotating column is rotated to enable the clamping plate to be clamped into the clamping groove, fixation is realized by virtue of the elastic force of the spring, complicated tools and tedious operation are not needed, the maintenance time and the labor cost are greatly saved, and the usability of equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of food preservation technology, and in particular to a device for preserving perishable packaged foods based on low-temperature plasma. Background Technology

[0002] Perishable packaged foods refer to foods that easily spoil and deteriorate at room temperature, requiring special packaging and storage conditions to extend their shelf life. These foods are typically rich in nutrients such as water, protein, and fat, providing an ideal environment for microbial growth and reproduction. Examples include fresh meat, fish, eggs, dairy products, fruits, and vegetables. To maintain the quality and safety of perishable foods, their packaging is usually barrier-like, preventing the intrusion of oxygen, moisture, and microorganisms. Vacuum packaging, nitrogen-filled packaging, and modified atmosphere packaging technologies may also be used. Furthermore, perishable packaged foods generally have their shelf life and storage conditions clearly indicated on the packaging, such as refrigeration, freezing, or storage in a cool, dry place, to remind consumers to store them under appropriate conditions and consume them promptly, ensuring that the food retains its good quality and safety when consumed.

[0003] Low-temperature plasma preservation is a novel food preservation technology. It utilizes low-temperature plasma generated by gas discharge to achieve preservation through physical and chemical processes. During the discharge process, various active particles are generated, such as electrons, ions, and free radicals. These active particles can disrupt the cell membranes and genetic material of microorganisms, thereby inhibiting their growth and reproduction and reducing the likelihood of food spoilage. Simultaneously, low-temperature plasma can degrade pesticide residues and harmful substances on the surface of food, improving its quality and safety. Furthermore, this technology can regulate the physiological metabolic processes of food, slowing down its aging and spoilage. Compared to traditional preservation methods, low-temperature plasma preservation offers advantages such as simple operation, high efficiency and speed, no chemical residues, and minimal impact on food quality, making it a promising technology for preserving perishable foods such as fruits, vegetables, meats, and aquatic products.

[0004] However, some existing low-temperature plasma food preservation devices for perishable packaged foods cannot achieve rapid installation and disassembly of the plasma plate. When the plasma plate malfunctions and needs maintenance, the inability to quickly remove it from the device forces maintenance personnel to spend a lot of time and effort on a series of cumbersome operations. This inability to quickly install and disassemble the plasma plate directly leads to the inability to perform rapid maintenance, greatly affecting the normal operating efficiency of the preservation device. This not only significantly reduces the food preservation effect but may also cause a large amount of perishable food to spoil due to prolonged equipment downtime, resulting in serious economic losses for food production enterprises. Therefore, to address these shortcomings, a low-temperature plasma-based food preservation device for perishable packaged foods is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a perishable packaged food preservation device based on low-temperature plasma, aiming to improve the problem that some existing low-temperature plasma perishable packaged food preservation devices cannot achieve rapid installation and disassembly of the plasma plate.

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

[0007] A perishable packaged food preservation device based on low-temperature plasma includes an outer frame. Sliding grooves are provided on both the front and rear sides of the inner interior of the outer frame. Plasma plates are slidably connected to both the front and rear sides of the inner interior of the outer frame. A docking plate is fixedly connected to the far side of two plasma plates. Rotating columns are rotatably connected to the left and right sides of the inner interior of two docking plates. A locking plate is fixedly connected to the near side of multiple rotating columns. Multiple sliding rods are slidably connected inside the outer frame. A limiting plate is fixedly connected to the near side of multiple sliding rods. Springs are sleeved on the outside of multiple sliding rods. A sliding disk is fixedly connected to the far side of multiple sliding rods. Multiple sliding grooves and locking slots are provided inside the outer frame. A controller is installed on the bottom inner side of the outer frame. A transmission component for transmission is installed on the top of the outer frame.

[0008] As a further description of the above technical solution:

[0009] The transmission component includes an annular guide rail, the top of which is mounted on the inner top side of the outer frame. Multiple sliders are slidably connected to the outside of the annular guide rail, and rotating disks are rotatably connected inside each of the multiple sliders. Hooks are fixedly connected to the bottom of each of the multiple rotating disks.

[0010] As a further description of the above technical solution:

[0011] A motor is installed on the top left side of the outer frame. A rotating shaft is fixedly connected to the output end of the motor. A toggle plate is fixedly connected to the bottom of the rotating shaft. Two limit brackets are fixedly connected to the top of the toggle plate. A limit groove is opened on the inner left side of the outer frame. A fixing plate is fixedly connected to the inner top side of the outer frame. A foot is fixedly connected to the bottom four corners of the outer frame.

[0012] As a further description of the above technical solution:

[0013] The plasma plate is slidably connected to the outside of the groove, and the side of the docking plate near the outer frame is in contact with the outside of the outer frame;

[0014] As a further description of the above technical solution:

[0015] The card plate is slidably connected to the inside of the sliding groove, and the card plate is rotatably connected to the inside of the card groove.

[0016] As a further description of the above technical solution:

[0017] One end of the spring is fixedly connected to the side of the sliding disk near the limiting disk, and the other end of the spring is fixedly connected to the inside of the outer frame;

[0018] As a further description of the above technical solution:

[0019] The side of the sliding disk away from the limiting disk is in contact with the side of the card plate close to the limiting disk, and the outside of the sliding disk is slidably connected to the inside of the sliding groove;

[0020] As a further description of the above technical solution:

[0021] The rotating shaft is externally rotatably connected to the inside left side of the outer frame, and the limiting frame is externally slidably connected to the inside of the limiting groove.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, when it is necessary to disassemble the plasma plate, simply rotate the rotating column to drive the clamping plate from the clamping slot to the sliding slot. The compressed spring then rebounds, pushing the sliding disk to disengage the clamping plate from the sliding slot, allowing the plasma plate to be removed from the slot. During installation, align the plasma plate with the sliding slot and press it down. The clamping plate slides into the sliding slot, squeezing the sliding disk to compress the spring. Then, rotate the rotating column to make the clamping plate engage with the clamping slot. The spring force is used to achieve fixation. No complicated tools or cumbersome operations are required, which greatly saves maintenance time and labor costs and improves the availability of the equipment.

[0024] 2. In this utility model, when the packaged food moves to the side of the motor along with the slider, the motor drives the rotating shaft and the actuating plate fixed at its bottom to rotate. The actuating plate can actuate the packaged food to rotate. The rotation of the food causes the rotating disk to rotate inside the slider, thereby realizing the flipping of the packaged food. In addition, the fixing plate fixed on the top side inside the outer frame limits the rotation of the food to prevent excessive rotation or deviation from the trajectory. By flipping the food, the area of ​​each part of the packaged food that receives low-temperature plasma sterilization irradiation can be increased, making sterilization more comprehensive, thereby effectively extending the shelf life of perishable packaged food and improving the preservation effect. Attached Figure Description

[0025] Figure 1 This is a perspective view of a perishable packaged food preservation device based on low-temperature plasma proposed in this utility model.

[0026] Figure 2This is a schematic diagram of the sliding disc structure of a perishable packaged food preservation device based on low-temperature plasma proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the docking plate structure of a perishable packaged food preservation device based on low-temperature plasma proposed in this utility model.

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 This is a schematic diagram of the outer frame structure of a perishable packaged food preservation device based on low-temperature plasma proposed in this utility model.

[0030] Figure 6 This is a schematic diagram of the slider structure of a perishable packaged food preservation device based on low-temperature plasma proposed in this utility model.

[0031] Legend:

[0032] 1. Outer frame; 2. Slide groove; 3. Docking plate; 4. Plasma plate; 5. Rotating column; 6. Clamping plate; 7. Slide rod; 8. Limiting plate; 9. Spring; 10. Sliding plate; 11. Sliding groove; 12. Clamping groove; 13. Controller; 14. Circular guide rail; 15. Slider; 16. Rotating disk; 17. Hook; 18. Motor; 19. Rotating shaft; 20. Actuating plate; 21. Limiting frame; 22. Limiting groove; 23. Fixing plate; 24. Stand. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figures 1 to 3This utility model provides an embodiment of a perishable packaged food preservation device based on low-temperature plasma, comprising an outer frame 1, which serves as the main support structure of the entire preservation device. Slide grooves 2 are provided on both the front and rear sides of the inner interior of the outer frame 1, and plasma plates 4 are slidably connected to both sides of the inner interior of the outer frame 1. The plasma plates 4 utilize low-temperature plasma technology to sterilize and preserve the packaged food. The plasma plates 4 are slidably connected to the outside of the slide grooves 2. A docking plate 3 is fixedly connected to the opposite side of each of the two plasma plates 4. The side of the docking plate 3 closest to the outer frame 1 contacts the outside of the outer frame 1. Rotating columns 5 are rotatably connected to the left and right sides of the inner interior of each of the two docking plates 3. The rotating columns 5 are key operational structures for the installation and disassembly of the plasma plates 4. Multiple rotating columns 5 are fixedly connected to adjacent sides with clamping plates 6. When the plasma plate 4 is installed inside the outer frame 1, the clamping plates 6 are rotated into the clamping slots 12 under the drive of the rotating columns 5. At this time, the clamping plates 6 and the clamping slots 12 are tightly fitted. With the help of the elastic force of the spring 9, the plasma plate 4 is firmly fixed inside the outer frame 1, ensuring that the plasma plate 4 will not be displaced during the operation of the preservation device and ensuring its normal operation.

[0035] Multiple sliding rods 7 are slidably connected inside the outer frame 1. A limiting plate 8 is fixedly connected to the adjacent sides of each sliding rod 7. The limiting plate 8 mainly limits the sliding range of the sliding disk 10 on the sliding rods 7, ensuring the stability of the sliding disk 10 during device operation. Springs 9 are fitted onto the outside of each sliding rod 7. One end of the spring 9 is fixedly connected to the side of the sliding disk 10 near the limiting plate 8, and the other end is fixedly connected to the inside of the outer frame 1. Sliding disks 10 are fixedly connected to the opposite sides of the sliding rods 7. When the plasma plate 4 is installed inside the outer frame 1, the retaining plate 6 slides into the sliding groove 11, pushing the sliding disk 10 towards the limiting plate 8. At this time, the spring 9 is compressed, storing elastic potential energy. When the retaining plate 6 rotates into the retaining groove 12, the elastic potential energy of the spring 9 causes the sliding disk 10 to press tightly against the retaining plate 6, thereby firmly fixing the plasma plate 4 inside the outer frame 1 with the elastic force of the spring 9. When it is necessary to disassemble the plasma plate 4, rotate the clamping plate 6 to disengage it from the clamping slot 12 and align it with the sliding slot 11. The compressed spring 9 releases its elastic potential energy and rebounds, pushing the sliding disk 10 to move in the opposite direction, thereby disassembling the clamping plate 6 from the sliding slot 11 and realizing the disassembly of the plasma plate 4.

[0036] Reference Figures 2 to 4The side of the sliding disk 10 furthest from the limiting disk 8 contacts the side of the clamping plate 6 closest to the limiting disk 8. When the plasma plate 4 is installed, the clamping plate 6 slides into the sliding groove 11, pressing the sliding disk 10 and causing it to slide along the sliding rod 7 towards the limiting disk 8, while simultaneously compressing the spring 9. Multiple sliding grooves 11 are provided inside the outer frame 1. The external part of the clamping plate 6 is slidably connected to the inside of the sliding groove 11, and the external part of the sliding disk 10 is also slidably connected to the inside of the sliding groove 11. The sliding groove 11 provides a sliding track for the clamping plate 6 and the sliding disk 10. Multiple slots 12 are provided inside the outer frame 1. The external part of the clamping plate 6 is rotatably connected to the inside of the slot 12. When the clamping plate 6 rotates into the slot 12 under the drive of the rotating column 5, the clamping plate 6 and the slot 12 fit tightly together. With the help of the spring 9 and the elastic force applied by the sliding disk 10, the plasma plate 4 is stably fixed. A controller 13 is installed on the bottom inner side of the outer frame 1. When using the preservation device, the operator can start the two plasma plates 4 by activating the controller 13, and adjust the intensity, frequency, and other parameters of the low-temperature plasma generated by the plasma plates 4 to meet the sterilization and preservation needs of different types of perishable packaged foods. A transmission component for transmission is installed on the top of the outer frame 1.

[0037] Reference Figure 1 , Figure 5 and Figure 6 The transmission component includes a ring guide rail 14, the top of which is mounted on the inner top side of the outer frame 1. The ring guide rail 14 is an important component of the transmission component, used to realize the function of transporting packaged food. Multiple sliders 15 are slidably connected to the outside of the ring guide rail 14. When the ring guide rail 14 is running under the control of the controller 13, the sliders 15 slide on the ring guide rail 14, driving the hooks 17 and the suspended packaged food to move together, so that they pass through the area where the plasma plate 4 is located in sequence and receive low-temperature plasma sterilization treatment. The interior of each slider 15 is rotatably connected to a rotating disk 16, and the bottom of each rotating disk 16 is fixedly connected to a hook 17, which is a structure directly used to suspend the packaged food.

[0038] Reference Figure 1 and Figure 5A motor 18 is installed on the top left side of the outer frame 1. A rotating shaft 19 is fixedly connected to the output end of the motor 18. When the motor 18 starts, it drives the rotating shaft 19 to rotate. The external part of the rotating shaft 19 is rotatably connected to the internal left side of the outer frame 1. A toggle plate 20 is fixedly connected to the bottom of the rotating shaft 19. The toggle plate 20 rotates under the drive of the motor 18, used to agitate the packaged food, causing it to rotate and achieve a flip. Two limiting frames 21 are fixedly connected to the top of the toggle plate 20. A limiting groove 22 is formed on the internal left side of the outer frame 1. The external part of the limiting frame 21 is slidably connected to the inside of the limiting groove 22. The main function of the limiting frame 21 is to limit and guide the rotation of the toggle plate 20, ensuring the stability and accuracy of the toggle plate 20 during rotation. A fixing plate 23 is fixedly connected to the internal top side of the outer frame 1. When the toggle plate 20 agitates the packaged food, causing it to rotate, the fixing plate 23 can restrict the rotation of the packaged food within a certain range, preventing excessive rotation or deviation from the predetermined flipping trajectory. The bottom four corners of the outer frame 1 are all fixedly connected to the support legs 24.

[0039] Working principle: When using this low-temperature plasma-based perishable packaged food preservation device, the packaged food can first be suspended from the left side of the outer frame 1 to the bottom of the hook 17. Then, the controller 13 can be started to control the two plasma plates 4 to start working. Then, the annular guide rail 14 can be started to drive the slider 15 to move, thereby achieving sterilization and preservation of the packaged food. When the packaged food is transported to the other side, the motor 18 drives the rotating shaft 19 and the actuating plate 20 to rotate. With the help of the fixed plate 23 to limit the packaged food, the rotation of the actuating plate 20 can cause the food packaging to rotate. At this time, the rotating disk 16 will rotate inside the slider 15, which can make the packaged food flip over and increase the sterilization irradiation area, thereby greatly improving the preservation effect.

[0040] When the plasma plate 4 needs to be disassembled and repaired, the rotating column 5 is rotated to drive the clamping plate 6 to rotate. At this time, the clamping plate 6 rotates inside the clamping groove 12, and then the clamping plate 6 is aligned with the inside of the sliding groove 11. At this time, the compressed spring 9 rebounds, and the clamping plate 6 is disengaged from the inside of the sliding groove 11. The plasma plate 4 can then be taken out from the inside of the sliding groove 2 for repair. When the plasma plate 4 needs to be installed, the plasma plate 4 is first aligned with the inside of the sliding groove 2, and then pressed into the inside of the outer frame 1. At this time, the clamping plate 6 slides into the inside of the sliding groove 11, and the sliding disk 10 is squeezed and displaced. At this time, the spring 9 is compressed, and the clamping plate 6 slides into the inside of the clamping groove 12. Then the rotating column 5 is rotated to make the clamping plate 6 rotate inside the clamping groove 12 to complete the engagement. Thus, the plasma plate 4 is firmly installed inside the sliding groove 2 with the help of the elastic force of the spring 9.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low temperature plasma based device for preserving perishable packed food items, comprising an outer frame (1), characterized in that: The inner front and back of the outer frame (1) are provided with sliding grooves (2), and the inner front and back of the outer frame (1) are slidably connected with plasma plates (4), the far side of the two plasma plates (4) is fixedly connected with the docking plate (3), the inner left and right sides of the two docking plates (3) are rotatably connected with rotating columns (5), the near side of the rotating column (5) is fixedly connected with the clamping plate (6), the inner side of the outer frame (1) is slidably connected with a plurality of sliding rods (7), the near side of the sliding rod (7) is fixedly connected with a limiting disc (8), the outer side of the sliding rod (7) is sleeved with a spring (9), the far side of the sliding rod (7) is fixedly connected with a sliding disc (10), the inner side of the outer frame (1) is provided with a plurality of sliding grooves (11), the inner side of the outer frame (1) is provided with a plurality of clamping grooves (12), the inner bottom side of the outer frame (1) is provided with a controller (13), and the top of the outer frame (1) is provided with a transmission assembly for transmission.

2. A low temperature plasma based fresh keeping device for perishable packed food items as claimed in claim 1, wherein: The transmission assembly comprises an annular guide rail (14), the top of the annular guide rail (14) is installed on the inner top side of the outer frame (1), the outer side of the annular guide rail (14) is slidably connected with a plurality of sliding blocks (15), the inner side of the sliding block (15) is rotatably connected with a rotating disc (16), and the bottom of the rotating disc (16) is fixedly connected with a hook (17).

3. A low temperature plasma based fresh keeping device for perishable packed food items as claimed in claim 1 wherein: The top left side of the outer frame (1) is provided with a motor (18), the output end of the motor (18) is fixedly connected with a rotating shaft (19), the bottom of the rotating shaft (19) is fixedly connected with a push plate (20), the top of the push plate (20) is fixedly connected with two limiting frames (21), the inner left side of the outer frame (1) is provided with a limiting groove (22), the inner top side of the outer frame (1) is fixedly connected with a fixed plate (23), and the bottom of the outer frame (1) is fixedly connected with a stand (24).

4. A low temperature plasma based fresh keeping device for perishable packed food items as claimed in claim 1, wherein: The outer side of the plasma plate (4) is slidably connected to the outer side of the sliding groove (2), and the side close to the outer frame (1) of the docking plate (3) is in contact with the outer side of the outer frame (1).

5. A low temperature plasma based fresh keeping device for perishable packed food items as claimed in claim 1, wherein: The outer side of the clamping plate (6) is slidably connected to the inner side of the sliding groove (11), and the outer side of the clamping plate (6) is rotatably connected to the inner side of the clamping groove (12).

6. A low temperature plasma based fresh keeping device for perishable packed food items as claimed in claim 1, wherein: One end of the spring (9) is fixedly connected to the side of the sliding disc (10) close to the limiting disc (8), and the other end of the spring (9) is fixedly connected to the inner side of the outer frame (1).

7. A low temperature plasma based fresh keeping device for perishable packed food items as claimed in claim 1, wherein: The side away from the limiting disc (8) of the sliding disc (10) is in contact with the side close to the limiting disc (8) of the clamping plate (6), and the outer side of the sliding disc (10) is slidably connected to the inner side of the sliding groove (11).

8. A low temperature plasma based fresh keeping device for perishable packed food items as claimed in claim 3 wherein: The outer side of the rotating shaft (19) is rotatably connected to the inner left side of the outer frame (1), and the outer side of the limiting frame (21) is slidably connected to the inner side of the limiting groove (22).

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