A fresh corn postharvest quick-freezing and frozen storage integrated intelligent storage device

Abstract

The utility model discloses a kind of fresh corn postharvest quick freezing and frozen storage integration intelligent storage device, including first chamber and second chamber, support frame, conveying belt, material receiving mechanism, precooling cabin, liquid nitrogen gasification mechanism, cold air blowing mechanism and implantable micro temperature probe device are equipped in first chamber, conveying mechanism is equipped on support frame, the end of conveying mechanism is equipped with material receiving mechanism, conveying mechanism is worn from precooling cabin, precooling cabin is equipped with liquid nitrogen gasification mechanism, cold air blowing mechanism and implantable micro temperature probe device, shelf is equipped in second chamber.The utility model improves fresh corn freezing efficiency and quality, realizes intelligent management, provides strong technical support for fresh corn industry, promotes the high-value utilization of agricultural products.

Description

Technical Field

[0001] This utility model relates to the field of agricultural product storage and preservation technology, and in particular to an intelligent storage device that integrates post-harvest quick-freezing and frozen storage of fresh corn. Background Technology

[0002] Sweet corn has light yellow kernels, a sweet taste, and a crisp texture. It is characterized by its high water and sugar content, and also contains abundant carbohydrates, amino acids, various vitamins, dietary fiber, and minerals, making it an important dietary choice for preventing chronic and degenerative diseases. However, sweet corn is harvested in summer. If harvested sweet corn is not cooled promptly, the high temperature causes its respiration to increase dramatically. This not only rapidly consumes its internal water and nutrients but also increases the activity of microorganisms, thus accelerating its decay. More importantly, due to its high sugar and water content, sweet corn is one of the fresh vegetables with the most intense respiration. After harvesting, the metabolic activity of sweet corn remains vigorous, leading to rapid deterioration in quality, including gradual hardening of the kernels, rapid loss of sweetness, yellowing, loss of aroma, and rotting of the husk.

[0003] Currently, the industry typically uses direct freezing of fresh corn ears for long-term supply, mainly by placing them directly into a -20℃ freezer. However, at -20℃, it takes a long time for the temperature at the center of the corn ear to drop to -20℃. Therefore, there is an urgent need for an integrated intelligent storage device that combines post-harvest quick-freezing and frozen storage for fresh corn. Utility Model Content

[0004] This invention provides an integrated intelligent storage device for quick-freezing and frozen storage of fresh corn after harvest, which improves the freezing efficiency and quality of fresh corn, realizes intelligent management, provides strong technical support for the fresh corn industry, and promotes the high-value utilization of agricultural products.

[0005] This utility model provides an integrated intelligent storage device for quick-freezing and frozen storage of fresh corn after harvest, including a first chamber and a second chamber. The first chamber and the second chamber are separated by a wall with a door. The first chamber contains a support frame, a conveyor belt, a receiving mechanism, a pre-cooling chamber, a liquid nitrogen vaporization mechanism, a cold air blowing mechanism, and an implanted micro temperature probe device. The support frame is equipped with the conveyor mechanism, and the receiving mechanism is located at the end of the conveyor mechanism. The conveyor mechanism extends out of the pre-cooling chamber. The pre-cooling chamber contains the liquid nitrogen vaporization mechanism, the cold air blowing mechanism, and the implanted micro temperature probe device. The second chamber contains a shelf. The implanted micro temperature probe device includes a base, a sensor, a telescopic sleeve, and a probe. The end of the telescopic sleeve is fixed to the base, the sensor is mounted on the base, and the base is fixed to the top of the pre-cooling chamber. The signal lead of the sensor passes through the telescopic sleeve and connects to the probe, and the probe is fixed to the head of the telescopic sleeve.

[0006] The aforementioned intelligent storage device for post-harvest quick-freezing and frozen storage of fresh corn, preferably, includes a liquid nitrogen vaporization mechanism comprising a liquid nitrogen vaporization device, a pipeline, and a nozzle. The liquid nitrogen vaporization device includes an ambient temperature vaporizer, a vaporization skid, and a pressure regulating device. The ambient temperature vaporizer is located inside the vaporization skid, and the pressure regulating device is installed on the ambient temperature vaporizer. The vaporization skid is placed on one side of the conveyor belt. The ambient temperature vaporizer is connected to the nozzle through the pipeline. The nozzle is located on the top of the pre-cooling chamber. The ambient temperature vaporizer is equipped with a liquid nitrogen device switch.

[0007] Preferably, in the intelligent storage device for quick-freezing and freezing of fresh corn after harvest, the cold air blowing mechanism is a first axial flow fan.

[0008] Preferably, in the intelligent storage device for quick-freezing and frozen storage of fresh corn after harvest, the receiving mechanism includes a collection box and a feeding port, the feeding port is located on the top of the collection box and is located below the end of the conveyor belt.

[0009] Preferably, the pre-cooling chamber is equipped with a filter cloth strip at its outlet. This is part of the intelligent storage device for post-harvest quick-freezing and frozen storage of fresh corn.

[0010] The intelligent storage device for quick-freezing and frozen storage of fresh corn after harvest, preferably, includes a second axial flow fan and a temperature control system in the second chamber. The temperature control system includes a temperature sensor, a humidity sensor, a PLC controller, and a control panel. The temperature sensor and the humidity sensor are located in the second chamber. The temperature sensor, the humidity sensor, and the second axial flow fan are respectively connected to the PLC controller. The PLC controller is connected to the control panel. The control panel has a temperature button, a humidity button, and a fan speed button.

[0011] The beneficial effects are:

[0012] This invention, an intelligent device integrating quick-freezing and cold storage functions, can rapidly lower the temperature of corn to the required level, slowing down the rate at which internal moisture freezes. After the quick-freezing process, the corn can be directly transferred to the cold storage shelves, achieving integrated quick-freezing and storage operations. This feature not only significantly reduces losses caused by logistics but also substantially saves labor and material costs. More importantly, it greatly preserves the original taste, color, and nutritional value of the corn, ensuring that it maintains good quality even after long-term storage. This invention multiplies the added value of the product and contributes an innovative technological solution to promoting the standardization and high-quality development of my country's fresh corn industry.

[0013] This invention enables quick freezing with liquid nitrogen followed by long-term freezing at -20°C, significantly improving the quality of frozen fresh corn. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the first chamber and the second chamber;

[0016] Figure 3 This is a structural diagram of the conveyor belt, precooling chamber, and receiving mechanism.

[0017] Figure 4-1 This is a schematic diagram of the structure of an implantable miniature temperature probe device;

[0018] Figure 4-2 A diagram illustrating the usage state of the telescopic sleeve driving the probe to retract;

[0019] Figure 4-3 A diagram illustrating the usage state of the probe being extended by the telescopic sleeve.

[0020] Figure 5 This is a structural diagram of the shelving unit.

[0021] In the picture:

[0022] 1. Support frame; 2. Conveyor belt; 3. Conveyor belt controller; 4. Pre-cooling chamber; 5. Liquid nitrogen vaporization device;

[0023] 5-1. Ambient air vaporizer; 5-2. Vaporization skid; 6. Liquid nitrogen device switch; 7. Piping; 8. Nozzle;

[0024] 9. First axial flow fan; 10. Implantable miniature temperature probe device; 11. First axial flow fan switch;

[0025] 12. Filter cloth strips; 13. Feed inlet; 14. Collection box; 15. Shelf; 16. Second axial flow fan;

[0026] 17. Distribution box; 18. Control panel; 19. Sensor; 20. Telescopic sleeve; 21. Probe; 22. Base. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the use of terms such as "first" and "second" to define components is merely for the convenience of distinguishing the aforementioned components; unless otherwise stated, these terms have no special meaning and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] This utility model provides an integrated intelligent storage device for quick-freezing and frozen storage of fresh corn after harvest. It includes a first chamber and a second chamber, separated by a wall with a door. The first chamber contains a support frame, a conveyor belt, a receiving mechanism, a pre-cooling chamber, a liquid nitrogen vaporization mechanism, a cold air blowing mechanism, and an implanted miniature temperature probe device. The conveyor mechanism is mounted on the support frame, and the receiving mechanism is located at the end of the conveyor mechanism. The conveyor mechanism extends through the pre-cooling chamber, which houses the liquid nitrogen vaporization mechanism, the cold air blowing mechanism, and the implanted miniature temperature probe device. The second chamber contains shelves. This utility model improves the freezing efficiency and quality of fresh corn, achieves intelligent management, provides strong technical support for the fresh corn industry, and promotes the high-value utilization of agricultural products.

[0031] The following section uses an integrated intelligent storage device for quick-freezing and freezing of fresh corn as an example to illustrate the entire technical process in detail.

[0032] Example 1

[0033] like Figures 1 to 5 As shown, an integrated intelligent storage device for quick-freezing and frozen storage of fresh corn after harvest includes a first chamber and a second chamber. The first chamber and the second chamber are separated by a wall with a door. The first chamber contains a support frame 1, a conveyor belt 2, a receiving mechanism, a pre-cooling chamber 4, a liquid nitrogen vaporization mechanism, a cold air blowing mechanism, and an implanted micro temperature probe device 10. The support frame 1 is equipped with the conveyor mechanism, and the receiving mechanism is located at the end of the conveyor mechanism. The conveyor mechanism extends out of the pre-cooling chamber 4, which contains the liquid nitrogen vaporization mechanism, the cold air blowing mechanism, and the implanted micro temperature probe device 10. The second chamber contains a shelf 15.

[0034] The conveyor belt 2 is connected to the conveyor belt controller 3, which controls the opening and closing of the conveyor belt 2.

[0035] The second chamber is equipped with a second axial flow fan 16 and a temperature control system. Under these conditions, corn can be stored frozen for extended periods at -20°C. The second axial flow fan 16 continuously cools the cold storage and maintains a dry environment. The temperature control system 18 precisely regulates parameters such as temperature and humidity within the cold storage.

[0036] The temperature control system includes a temperature sensor, a humidity sensor, a PLC controller, and a control panel 18. The temperature sensor and the humidity sensor are located in the second chamber. The temperature sensor, the humidity sensor, and the second axial flow fan 16 are respectively connected to the PLC controller. The PLC controller is connected to the control panel 18. The control panel 18 is equipped with a temperature button, a humidity button, and a fan speed button.

[0037] like Figure 2 and Figure 3 As shown, a filter cloth strip 12 is provided at the outlet of the precooling chamber 4. The filter cloth strip 12 intercepts and adsorbs impurities such as corn ears to prevent them from scattering.

[0038] like Figure 2 and Figure 3 As shown, the liquid nitrogen vaporization mechanism includes a liquid nitrogen vaporization device 5, a pipe 7, and a nozzle 8. The liquid nitrogen vaporization device 5 is located on one side of the conveyor belt 2. The liquid nitrogen vaporization device 5 is connected to the nozzle 8 through the pipe 7. The nozzle 8 is located on the top of the precooling chamber 4. The liquid nitrogen vaporization device 5 is equipped with a liquid nitrogen device switch 6.

[0039] The liquid nitrogen vaporization mechanism includes a liquid nitrogen vaporization device, a pipe 7, and a nozzle 8. The liquid nitrogen vaporization device 5 includes an ambient temperature vaporizer 5-1, a vaporization skid 5-2, and a pressure regulating device. The ambient temperature vaporizer 5-1 is installed inside the vaporization skid 5-2. The pressure regulating device is installed on the ambient temperature vaporizer 5-1. The vaporization skid 5-2 is placed on one side of the conveyor belt 2. The ambient temperature vaporizer 5-1 is connected to the nozzle 8 through the pipe 7. The nozzle 8 is installed on the top of the precooling chamber 4. The ambient temperature vaporizer 5-1 is equipped with a liquid nitrogen device switch 6.

[0040] The pressure regulating device is the WSA series air-driven nitrogen booster from Shanghai Xinyu Hydraulic Machinery & Electrical Equipment Co., Ltd.

[0041] like Figure 2 and Figure 3 As shown, the air blowing mechanism is a first axial flow fan 9, which is connected to a first axial flow fan switch 11.

[0042] The liquid nitrogen vaporization device 5 and the first axial flow fan 9 form a coordinated temperature control system. The liquid nitrogen gas achieves rapid heat exchange through ultra-low temperature (-196℃) contact, and the first axial flow fan 9 accelerates the uniform distribution of the temperature field through forced convection. The wind speed of the first axial flow fan 9 can be flexibly controlled by the axial flow fan switch 11. The liquid nitrogen vaporization device 5 and the first axial flow fan 9 form a uniform low-temperature gas flow field to perform dual treatment on the corn: on the one hand, reducing surface moisture through a rapid drainage mechanism, and on the other hand, rapidly freezing it.

[0043] like Figure 2 and Figure 3As shown, the receiving mechanism includes a collection box 14 and a feed inlet 13. The top of the collection box 14 is provided with the feed inlet 13, which is located below the end of the conveyor belt 2.

[0044] like Figure 4-1 , Figure 4-2 and Figure 4-3 As shown, the implantable miniature temperature probe device 10 includes a base 22, a sensor 19, a telescopic sleeve 20, and a probe 21. The end of the telescopic sleeve 20 is fixed to the base 22, which is fixed to the top of the precooling chamber 4. The sensor 19 is mounted on the base 22, and the signal lead of the sensor 19 passes through the telescopic sleeve 20 and connects to the probe 21. The probe 21 is fixed to the head of the telescopic sleeve 20.

[0045] Example 2

[0046] Multiple implantable miniature temperature probe devices 10 are provided and can be arranged longitudinally along the direction of corn transportation on the top of the precooling chamber 4.

[0047] Work process:

[0048] The conveyor belt 2 is started by the conveyor belt controller 3 and the appropriate speed is set to start running, transporting the intact corn to the pre-cooling chamber 4.

[0049] The corn is transported to the cold chamber 4 by the conveyor belt 2. The cold air released by the liquid nitrogen vaporization device 5 is evenly sprayed by the nozzle 8 through the liquid nitrogen device switch 6. At the same time, the wind force of the first axial flow fan 9 is used to quickly complete the corn quick-freezing and drying process.

[0050] The quick-frozen corn is transported to the inlet 13 and then placed into the collection box 14. It is then transferred to the shelf 15 for long-term frozen storage. The cold storage can be controlled by an intelligent control system 18 to set the temperature and humidity values ​​within the second cavity and adjust the speed parameters of the second axial flow fan 16. The corn is then stored long-term on the shelf 15 within the second cavity.

[0051] The top of the cold chamber 4 is equipped with an implantable miniature temperature probe device 10. The extension distance of the temperature probe can be controlled by the retractable device 20 to penetrate the corn cob for temperature monitoring, ensuring accurate temperature control throughout the entire processing.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fresh corn postharvest quick-freezing and frozen storage integrated intelligent storage device, characterized in that, The device includes a first chamber and a second chamber, separated by a wall with a door. The first chamber contains a support frame, a conveyor belt, a receiving mechanism, a pre-cooling chamber, a liquid nitrogen vaporization mechanism, a cold air blowing mechanism, and an implantable miniature temperature probe. The conveyor belt is mounted on the support frame, and the receiving mechanism is located at the end of the conveyor belt. The conveyor belt extends from the pre-cooling chamber, which contains the liquid nitrogen vaporization mechanism, the cold air blowing mechanism, and the implantable miniature temperature probe. The second chamber contains a shelf. The implantable miniature temperature probe includes a base, a sensor, a telescopic sleeve, and a probe. The end of the telescopic sleeve is fixed to the base, and the sensor is mounted on the base. The base is fixed to the top of the pre-cooling chamber. The sensor's signal lead passes through the telescopic sleeve and connects to the probe, which is fixed to the head of the telescopic sleeve.

2. The fresh corn postharvest quick-freezing and frozen storage integrated intelligent storage device according to claim 1, characterized in that, The liquid nitrogen vaporization mechanism includes a liquid nitrogen vaporization device, a pipeline, and a nozzle. The liquid nitrogen vaporization device includes an ambient temperature vaporizer, a vaporization skid, and a pressure regulating device. The ambient temperature vaporizer is located inside the vaporization skid, and the pressure regulating device is installed on the ambient temperature vaporizer. The vaporization skid is placed on one side of the conveyor belt. The ambient temperature vaporizer is connected to the nozzle through the pipeline. The nozzle is located on the top of the precooling chamber. The ambient temperature vaporizer is equipped with a liquid nitrogen device switch.

3. The fresh corn postharvest quick-freezing and frozen storage integrated intelligent storage device according to claim 2, characterized in that, The air blowing mechanism is a first axial flow fan.

4. The fresh corn postharvest quick-freezing and frozen storage integrated intelligent storage device according to claim 3, characterized in that, The receiving mechanism includes a collection box and a feed inlet. The feed inlet is located on the top of the collection box and below the end of the conveyor belt.

5. The fresh corn postharvest quick-freezing and frozen storage integrated intelligent storage device according to claim 4, characterized in that, The precooling chamber is equipped with filter cloth strips at its outlet.

6. The fresh corn postharvest quick-freezing and frozen storage integrated intelligent storage device according to claim 5, characterized in that, The second chamber is equipped with a second axial flow fan and a temperature control system. The temperature control system includes a temperature sensor, a humidity sensor, a PLC controller, and a control panel. The temperature sensor and the humidity sensor are located in the second chamber. The temperature sensor, the humidity sensor, and the second axial flow fan are respectively connected to the PLC controller. The PLC controller is connected to the control panel. The control panel is equipped with a temperature button, a humidity button, and a fan speed button.

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