A two-stage fluidized freezing equipment adjustment control method and system

Abstract

The invention discloses a two-stage fluidized freezing equipment adjustment and control method and system, which relates to the field of fluidized production adjustment technology, and comprises the following steps: S1: at least one group of dry cooling fans and temperature and humidity probes are arranged at the feed port position, and the feed temperature and humidity are monitored in real time. According to the material type and feed quantity, the feed temperature and humidity are detected by the temperature and humidity probes, and whether the dry cooling fan needs to be turned on is judged by the PLC control system; S2: according to the comparison result between the detected feed temperature and the preset temperature threshold, the start and stop of the dry cooling fan is controlled; S3: regulating air valves are respectively arranged on the first mesh belt B1 and the second mesh belt B2; S4: at least one group of agitators and fans are arranged in the equipment, and the agitators and fans are operated in linkage, and the operating frequencies of the agitators and fans are adjusted according to the material status; S5: the equipment operation status is adjusted. The method not only significantly improves the product processing quality, but also greatly optimizes the production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of fluidized production regulation, and in particular relates to a two-stage fluidized freezing equipment regulation control method and system. Background Art

[0002] Fluidized freezing technology has important applications in the field of food processing. The precise control of its production process directly affects product quality and production efficiency. Traditional fluidized freezing equipment often faces many challenges, such as inaccurate temperature control, uneven cooling effect, and material agglomeration. These problems can lead to unstable product freezing quality, energy waste, and low production efficiency.

[0003] At present, the control systems of most fluidized freezing equipment adopt a single temperature adjustment method, lacking refined management of the entire production process. For example, the control of feed temperature is often achieved through simple switch operations, which is difficult to dynamically adjust according to changes in different material properties or environmental conditions. During the cooling process, unreasonable cold distribution will not only lead to inconsistent freezing effects, but may also cause local overcooling or overheating, thereby affecting the quality of the material. In addition, traditional mixing and conveying systems are difficult to adjust in real time according to the material status during equipment operation, and are prone to material accumulation, agglomeration or over-processing, further reducing the overall performance of the equipment.

[0004] In the existing technology, although some optimization solutions have been proposed, such as centralized control through PLC control systems or the introduction of monitoring equipment such as temperature and humidity sensors, these improvements are usually limited to a certain link in the production process and lack comprehensive consideration of the overall operation of the system. When processing materials with different characteristics or responding to changes in the production environment, the existing equipment is still insufficient in adaptability and flexibility. In particular, there is currently a lack of effective solutions for the coordinated control of multiple parameters under complex production conditions. Summary of the invention

[0005] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a two-stage fluidized freezing equipment adjustment and control method and system to solve the problems mentioned in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A two-stage fluidized freezing equipment adjustment and control method comprises the following steps:

[0008] S1: At least one set of dry cooling fan and temperature and humidity probe is set at the feed inlet to monitor the feed temperature and humidity in real time. According to the material type and feed quantity, the feed temperature and humidity are detected by the temperature and humidity probe, and the PLC control system is used to determine whether the dry cooling fan needs to be turned on;

[0009] S2: Control the start and stop of the dry cooling fan according to the comparison result between the detected feed temperature and the preset temperature threshold;

[0010] S3: Adjusting air valves are respectively set on the first mesh belt B1 and the second mesh belt B2. The cooling capacity and cooling capacity feedback data of the unit are collected in real time through the PLC control system. The air valve opening and the speed of the first mesh belt B1 and the second mesh belt B2 are adjusted through the PLC control system to realize independent control of different cooling areas.

[0011] S4: at least one set of a mixer and a fan is arranged in the equipment, wherein the fan and the mixer are positioned to match each other, the mixer and the fan are operated in linkage, and the operating frequencies of the mixer and the fan are adjusted according to the material state;

[0012] S5: Through the PLC control system, combined with the feed type, quantity and feedback information from the temperature and humidity probe, air valve opening sensor, and mesh belt speed sensor, the equipment operating status is adjusted.

[0013] Preferably, the step S2 specifically includes:

[0014] Use temperature and humidity probe to read the temperature value of the feed inlet in real time, and set the high temperature threshold TH and low temperature threshold TL in the PLC control system;

[0015] When the temperature is higher than TH, turn on all dry cooling fans;

[0016] When the temperature is higher than TL and lower than or equal to TH, some dry cooling fans are turned on;

[0017] When the temperature is lower than or equal to TL, the dry cooling fan will not start.

[0018] Preferably, in step S4, the operating frequencies of the mixer and the fan are adjusted according to the material state;

[0019] Among them, the material status includes material type, material quantity, material temperature, material humidity, material stacking height, material particle size and material flow rate.

[0020] Preferably, in step S4, the reference operating frequencies of the mixer and the fan are set according to the material state and production requirements, and the production requirements include freezing efficiency requirements, material flow, cooling uniformity and equipment load capacity.

[0021] Preferably, a mesh belt speed threshold BS is set, and the operating parameters of the first mesh belt B1 and the second mesh belt B2 are dynamically adjusted based on the comparison result with the real-time monitored material accumulation height and BS.

[0022] Preferably, in step S3, the air valve opening threshold VO is set, and the opening of the air valve is adjusted through the PLC control system according to the comparison result between the unit cooling capacity and cooling capacity feedback and the preset threshold value to ensure the stability of the material state of the first section mesh belt B1 and the second section mesh belt B2.

[0023] As an advantage, the method further comprises the following steps:

[0024] Monitor the temperature and material status at the discharge port and adjust production parameters based on the monitoring results.

[0025] Preferably, the control of the dry cooling fan, mixer and air valve is achieved through a PLC control system, which is used to monitor and adjust various parameters in the production process in real time and provide feedback on the operating status of each device.

[0026] The present application also discloses a two-stage fluidized freezing equipment regulating and controlling system, comprising:

[0027] A mesh belt B1 is provided at a certain position and is used for conveying materials;

[0028] The second-stage mesh belt B2 is set at the second stage and is used to transport materials;

[0029] At least one set of dry cooling fans, arranged at the feed inlet, for adjusting the feed temperature and humidity in real time;

[0030] Two sets of regulating air valves are respectively set on the first mesh belt B1 and the second mesh belt B2 to adjust the air volume;

[0031] At least one agitator, arranged inside the equipment, for preventing the material from agglomerating;

[0032] At least one fan, arranged corresponding to the mixer, for providing air volume;

[0033] The PLC control system dynamically adjusts the operating parameters of the dry cooling fan, regulating air valve, mixer, fan, first mesh belt B1 and second mesh belt B2 in combination with the temperature and humidity sensors, cooling feedback and material status information.

[0034] In summary, the present invention mainly has the following beneficial effects:

[0035] 1. This method significantly improves the quality and production efficiency of material processing by implementing precise control of the entire process. First, in the feeding process, multiple groups of dry cooling fans and temperature and humidity probes, temperature and humidity probes and graded control strategies are used to achieve precise adjustment of the feeding temperature. It not only ensures the optimal processing conditions of the material in the initial state, but also effectively reduces the quality problems caused by temperature fluctuations. Secondly, during the processing, by setting regulating air valves on the first mesh belt B1 and the second mesh belt B2, and using the PLC system to make real-time adjustments based on the cooling capacity and feedback data of the unit, precise control of cooling capacity distribution is achieved. The dynamic adjustment mechanism flexibly allocates cooling capacity according to actual needs, ensures the consistency of material cooling effect, and effectively reduces energy waste. This method not only significantly improves the product processing quality, but also greatly optimizes production efficiency.

[0036] 2. In terms of cooling capacity control, this method adopts a zoning differentiation strategy. The first section of the mesh belt B1 is mainly controlled based on the cooling capacity of the unit to ensure the basic stability of the material entering the cooling process; the second section of the mesh belt B2 is adjusted in real time based on cooling capacity feedback to better adapt to the cooling needs of different stages of the production line. By monitoring the temperature of the outlet and dynamically adjusting the cooling capacity supply, quality loss and energy waste caused by excessive cooling are avoided. Such a zoning optimization design not only improves the uniformity of the cooling effect, but also effectively prevents the problem of material agglomeration during the cooling process, thereby further ensuring the stability and reliability of the processing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic flow chart of the method of the present invention;

[0038] Figure 2 It is a schematic diagram of the system flow of the present invention;

[0039] Figure 3 It is a schematic diagram of the system structure of the present invention. DETAILED DESCRIPTION

[0040] The invention of this application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In order to clearly and completely describe the technical solution, the following embodiments are selected for illustration; based on the contents recorded in this application, other embodiments obtained without creative work are all within the scope of protection of the present invention.

[0041] In the following embodiments, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom" and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of clearly describing the present embodiment, rather than indicating or implying that the device or element referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0042] The following is combined with Figure 1-2 This application is described in further detail.

[0043] A two-stage fluidized freezing equipment adjustment and control method comprises the following steps:

[0044] S1: At least one set of dry cooling fans and temperature and humidity probes are set at the feed inlet. Before the front production line transports the material to the feed inlet, the feed temperature and humidity are detected by the temperature and humidity probes, and the PLC control system is used to determine whether the dry cooling fans need to be turned on. The purpose is to monitor the feed temperature in advance and prepare for subsequent processing. In specific implementation, 3-5 sets of dry cooling fans can be set and equipped with a corresponding number of temperature and humidity probes to monitor the temperature and humidity changes at the feed inlet in real time.

[0045] S2: Control the start and stop of the dry cooling fan according to the detected feed temperature, including:

[0046] Use temperature and humidity probe to read the temperature value of the feed inlet in real time, and set the judgment range in the PLC control system;

[0047] According to the temperature, adopt the corresponding dry cooling fan start-up strategy to achieve hierarchical control;

[0048] The hierarchical control method can be flexibly adjusted according to the actual temperature conditions, which can not only ensure the appropriate feed temperature but also save energy.

[0049] S3: Adjustable air valves are set on the first mesh belt B1 and the second mesh belt B2 respectively. The cooling capacity and cooling feedback data of the unit are collected in real time through the PLC control system. The air valve opening and the speed of the first mesh belt B1 and the second mesh belt B2 are adjusted through the PLC control system to achieve independent control of different cooling areas. The cooling capacity distribution during the processing process can be accurately controlled to ensure stable product quality.

[0050] S4: at least one set of a mixer and a fan is arranged in the equipment, wherein the fan and the mixer are positioned to match each other, the mixer and the fan are operated in linkage, and the operating frequencies of the mixer and the fan are adjusted according to the material state;

[0051] S5: Through the PLC control system, combined with the feed type, quantity and feedback information from the temperature and humidity probe, air valve opening sensor, and mesh belt speed sensor, the equipment operating status is adjusted.

[0052] In this embodiment, the two-stage fluidized freezing equipment adjustment and control method realizes precise control of the entire process from feeding to discharging. First, multiple groups of dry cooling fans and temperature and humidity probes are set at the feed port. Combined with the temperature and humidity probes and the graded control strategy, the precise adjustment of the feed temperature is achieved, laying a good foundation for subsequent processing. Secondly, by setting regulating air valves on the first mesh belt B1 and the second mesh belt B2, and using the PLC system to make real-time adjustments based on the cooling capacity and feedback of the unit, precise control of cooling capacity distribution during the processing process is achieved, effectively ensuring the stability of product quality.

[0053] The mixer and the corresponding fan are set to dynamically adjust the operating frequency according to the material status, which effectively prevents the material from agglomerating, ensures the smooth operation of the production line, and greatly improves the system's adaptability to different material characteristics and production needs.

[0054] This method achieves precise management of the entire process from raw material input to finished product output through multi-point monitoring, automatic adjustment and coordinated control, which not only significantly improves product quality and consistency, but also greatly improves production efficiency and energy utilization.

[0055] The step S2 specifically includes:

[0056] Use temperature and humidity probe to read the temperature value of the feed inlet in real time, and set the high temperature threshold TH and low temperature threshold TL in the PLC control system;

[0057] When the temperature is higher than TH, turn on all dry cooling fans;

[0058] When the temperature is higher than TL and lower than or equal to TH, some dry cooling fans are turned on;

[0059] When the temperature is lower than or equal to TL, the dry cooling fan will not start.

[0060] In this embodiment, in step S4, the reference operating frequencies of the mixer and the fan are set according to the material state and production requirements, and the production requirements include freezing efficiency requirements, material flow, cooling uniformity and equipment load capacity:

[0061] The base frequency of the mixer is F1Hz;

[0062] The base frequency of the fan is W1Hz;

[0063] The reference operating frequency of the first mesh belt B1 and the second mesh belt B2 is BSHz.

[0064] Setting the base frequency according to the material status and production requirements can ensure that the materials are fully mixed and have good fluidity, prevent material accumulation and scattering, and ensure appropriate heat exchange time and uniform cooling effect. Achieving the best balance between production efficiency, product quality and energy consumption significantly improves equipment utilization and product consistency, while effectively reducing energy consumption and equipment wear.

[0065] In another embodiment, in step S4, the operating frequencies of the mixer and the fan are adjusted according to the material state, wherein the material state includes material type, material quantity, material temperature, material humidity, material stacking height, material particle size and material flow rate, specifically including:

[0066] Preliminarily set the base operating frequency of the mixer and fan according to the material type and quantity;

[0067] According to the real-time monitoring data of material temperature and humidity, the operating frequency of the mixer and fan is dynamically adjusted:

[0068] When the material temperature is high, increase the fan frequency to speed up cooling;

[0069] When the material humidity is high, increase the mixer frequency appropriately to prevent agglomeration;

[0070] Adjust the operating frequency of the mixer according to the change of material stacking height:

[0071] When the stacking height increases, the frequency of the front mixer is increased and the frequency of the rear mixer is decreased;

[0072] When the stacking height decreases, the frequency of the front mixer is reduced and the frequency of the rear mixer is increased;

[0073] Adjust the operating parameters of the mixer and fan according to the particle size of the material:

[0074] For larger particle materials, increase the mixer frequency and reduce the fan frequency;

[0075] For smaller particle materials, reduce the mixer frequency and increase the fan frequency;

[0076] According to the changes in material flow rate, coordinate and adjust the operating frequency of the mixer and fan:

[0077] When the flow rate increases, the frequency of the front mixer is reduced, the frequency of the rear mixer is increased, and the frequency of the fan is increased at the same time;

[0078] When the flow rate decreases, the frequency of the front mixer is increased, the frequency of the rear mixer is decreased, and the fan frequency is reduced at the same time.

[0079] In this embodiment, by comprehensively considering multiple parameters such as material type, quantity, temperature, humidity, stacking height, particle size and flow rate, the operating frequency of the mixer and fan is precisely controlled. This method can better adapt to materials of different types and states, improve freezing efficiency and product quality, and optimize energy use and equipment operation efficiency.

[0080] In addition, changing the operating frequency of the first mesh belt B1 and the second mesh belt B2 specifically includes:

[0081] If the material does not flow smoothly at the discharge port, reduce the stirring frequency of the terminal mixer, reduce the operating frequency of the terminal fan, and reduce the operating frequency of the second-stage mesh belt B2.

[0082] Reducing the stirring frequency of the end mixer can reduce the shear force on the material, reduce the mechanical action on the processed material, and help maintain the integrity of the material. By reducing the stirring frequency, it can be matched with the reduced belt speed and fan frequency to maintain the coordination of the entire discharge system.

[0083] In this embodiment, the step S3 sets the air valve opening threshold VO, and adjusts the opening of the air valve through the PLC control system according to the comparison result between the unit cooling capacity and cooling capacity feedback and the preset threshold value to ensure the stability of the material state of the first section mesh belt B1 and the second section mesh belt B2.

[0084] By adopting differentiated control for the first mesh belt B1 and the second mesh belt B2, accurate management of different stages of the production line is achieved. The first mesh belt B1 is mainly controlled according to the cooling capacity of the unit to ensure the stability of the initial processing stage; while the second mesh belt B2 is adjusted in real time according to the cooling feedback, ensuring the accurate control of the final product quality and improving the uniformity of the product. At the same time, by monitoring the temperature of the discharge port and dynamically adjusting the cooling supply, the problem of material breakage caused by overcooling is avoided. The entire process is automatically controlled by the PLC system, which reduces human intervention and improves the stability and efficiency of production.

[0085] The specific method of real-time adjustment of the second-stage mesh belt B2 according to the cooling feedback is:

[0086] Set the target cooling capacity value and the allowable deviation range in the PLC control system.

[0087] Temperature sensors are installed at the inlet and outlet of the second-section mesh belt B2 to monitor material temperature changes in real time.

[0088] The actual cooling capacity is calculated based on the temperature difference between the inlet and outlet and the material flow rate.

[0089] Compare the actual cooling capacity with the target cooling capacity:

[0090] If the actual cooling capacity is within the allowable deviation range, maintain the current air valve opening and mesh belt speed unchanged.

[0091] If the actual cooling capacity is lower than the target value and exceeds the allowable deviation, increase the air valve opening and / or reduce the belt speed.

[0092] If the actual cooling capacity is higher than the target value and exceeds the allowable deviation, reduce the air valve opening and / or increase the belt speed.

[0093] Air valve opening adjustment:

[0094] Pre-set the adjustment step of the air valve opening.

[0095] Determine the adjustment range based on the difference between the actual cooling capacity and the target cooling capacity.

[0096] Increase or decrease the air valve opening according to the determined adjustment range.

[0097] Belt speed adjustment:

[0098] Preset the adjustment step size of the belt speed.

[0099] Determine the adjustment range based on the difference between the actual cooling capacity and the target cooling capacity.

[0100] Increase or decrease the belt speed according to the determined adjustment range.

[0101] The control of the dry cooling fan, mixer and air valve is achieved through the PLC system. The PLC system is used to monitor and adjust the temperature, humidity and air volume in the production process in real time, and to feedback the operating status of each device.

[0102] The present application also discloses a two-stage fluidized freezing equipment adjustment and control system, Figure 2 and Figure 3 ,include:

[0103] A mesh belt B1 is provided at a certain position and is used for conveying materials;

[0104] The second-stage mesh belt B2 is set at the second stage and is used to transport materials;

[0105] At least one set of dry cooling fans, arranged at the feed inlet, for adjusting the feed temperature and humidity in real time;

[0106] Two sets of regulating air valves are respectively set on the first mesh belt B1 and the second mesh belt B2 to adjust the air volume;

[0107] At least one agitator, arranged inside the equipment, for preventing the material from agglomerating;

[0108] At least one fan, arranged corresponding to the mixer, for providing air volume;

[0109] The PLC control system dynamically adjusts the operating parameters of the dry cooling fan, regulating air valve, mixer, fan, first mesh belt B1 and second mesh belt B2 in combination with the temperature and humidity sensors, cooling feedback and material status information.

[0110] Embodiment 1: Regulation control in basic mode

[0111] When producing common quick-frozen foods, the two-stage fluidization regulation and control method of the present invention is adopted to ensure efficient material transportation and temperature and humidity regulation.

[0112] Temperature and humidity adjustment at the feed inlet: The temperature and humidity probe detects the material temperature at 80-90°C and the humidity at 65-70%.

[0113] If the temperature is higher than the set threshold of 60-65°C, the PLC system starts 3-5 dry cooling fans to reduce the temperature to the target range.

[0114] Mesh belt and air valve linkage: In the initial state, the opening of the air valve of the first mesh belt B1 is 30%-50%, and the opening of the air valve of the second mesh belt B2 is 40%-60%. Real-time monitoring of cooling feedback, adjust the air valve opening according to the material temperature, control the first mesh belt at 5-10%, and the second mesh belt at 10-15%.

[0115] Coordination between mixer and fan: The mixer frequency is 40-50Hz, and is dynamically adjusted to 45-55Hz based on the material characteristics to prevent agglomeration. The conveying speeds of the first mesh belt B1 and the second mesh belt B2 are set to 50-70Hz respectively to keep the material evenly cooled and conveyed stably.

[0116] Discharge port adjustment: If the temperature and humidity at the discharge port are abnormal (below 0-5°C), the PLC system will reduce the fan frequency by 5-10Hz and the mixer frequency by 5-10Hz to ensure stable product quality.

[0117] Example 2: Dynamic adjustment mode according to recipe

[0118] This embodiment is suitable for food production that requires precise recipe management (such as pre-made dishes).

[0119] Raw material feeding temperature: 45-55℃; humidity: 50%-70%.

[0120] Target discharge temperature: 5-10°C; target humidity: 30%-50%.

[0121] Dynamic adjustment control: When the feed temperature reaches 55°C, the PLC system immediately starts 5 dry cooling fans and maintains stable operation when the humidity is within the range.

[0122] The initial opening of the air valve of the first-stage mesh belt B1 is 40%-50%, and the opening of the air valve of the second-stage mesh belt B2 is 50%-60%. They are adjusted to 30%-60% and 40%-70% respectively according to the cooling feedback.

[0123] Linkage control optimization: The operating frequency of the mixer is 35-55Hz, and the operating frequency of the fan is 20-40Hz, which can achieve precise cooling distribution and meet diversified production needs.

[0124] Example 3: Special Adjustment for High Humidity Environment

[0125] Suitable for feed environments with higher humidity (such as foods with high water content).

[0126] Pre-feeding treatment: When the humidity of the material is higher than 75%, the PLC system will preferentially start the high-efficiency dry cooling fan to reduce the humidity to the target range.

[0127] Adjustment of mesh belt section B1: Set the air valve opening to 40%-60%, reduce the mesh belt running speed to 40-60Hz, and extend the cooling time to avoid wet material adhesion.

[0128] Mixing and fan linkage: The mixer frequency is set to 50-60Hz to prevent material sticking and accumulation through high-frequency operation; the fan frequency is set to 30-40Hz to assist humidity control.

[0129] Discharge adjustment: When the target humidity is detected to reach 30%-50%, the mixer and fan will gradually reduce the frequency to 40-50Hz and 20-30Hz to ensure the stability of the material state.

[0130] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any slight modification, equivalent substitution and improvement made to the above embodiment based on the technical essence of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. A two-stage fluidized freezing equipment adjustment and control method, characterized in that: The following steps are involved: S1: At least one set of dry cooling fan and temperature and humidity probe is set at the feed inlet to monitor the feed temperature and humidity in real time. According to the material type and feed quantity, the feed temperature and humidity are detected by the temperature and humidity probe, and the PLC control system is used to determine whether the dry cooling fan needs to be turned on; S2: Control the start and stop of the dry cooling fan according to the comparison result between the detected feed temperature and the preset temperature threshold; S3: Adjusting air valves are respectively set on the first mesh belt B1 and the second mesh belt B2. The cooling capacity and cooling capacity feedback data of the unit are collected in real time through the PLC control system. The air valve opening and the speed of the first mesh belt B1 and the second mesh belt B2 are adjusted through the PLC control system to realize independent control of different cooling areas. S4: at least one set of a mixer and a fan is arranged in the equipment, wherein the fan and the mixer are positioned to match each other, the mixer and the fan are operated in linkage, and the operating frequencies of the mixer and the fan are adjusted according to the material state; S5: Through the PLC control system, combined with the feed type, quantity and feedback information from the temperature and humidity probe, air valve opening sensor, and mesh belt speed sensor, the equipment operating status is adjusted.

2. A two-stage fluidized freezing equipment adjustment and control method according to claim 1, characterized in that: The step S2 specifically includes: Use temperature and humidity probe to read the temperature value of the feed inlet in real time, and set the high temperature threshold TH and low temperature threshold TL in the PLC control system; When the temperature is higher than TH, turn on all dry cooling fans; When the temperature is higher than TL and lower than or equal to TH, some dry cooling fans are turned on; When the temperature is lower than or equal to TL, the dry cooling fan will not start.

3. The two-stage fluidized freezing equipment adjustment and control method according to claim 1, characterized in that: In step S4, the operating frequencies of the mixer and the fan are adjusted according to the material state; Among them, the material status includes material type, material quantity, material temperature, material humidity, material stacking height, material particle size and material flow rate.

4. A two-stage fluidized freezing equipment adjustment and control method according to claim 3, characterized in that: In step S4, the reference operating frequencies of the mixer and the fan are set according to the material state and production requirements, and the production requirements include freezing efficiency requirements, material flow, cooling uniformity and equipment load capacity.

5. The two-stage fluidized freezing equipment adjustment and control method according to claim 1, characterized in that: In step S3, the air valve opening threshold VO is set, and the opening of the air valve is adjusted through the PLC control system according to the comparison result between the unit cooling capacity and cooling capacity feedback and the preset threshold value to ensure the stability of the material state of the first mesh belt B1 and the second mesh belt B2.

6. The two-stage fluidized freezing equipment adjustment and control method according to claim 1, characterized in that: The following steps are also included: Monitor the temperature and material status at the discharge port and adjust production parameters based on the monitoring results.

7. The two-stage fluidized freezing equipment adjustment and control method according to claim 1, characterized in that: The control of the dry cooling fan, mixer and air valve is achieved through a PLC control system. The PLC control system is used to monitor and adjust various parameters in the production process in real time and provide feedback on the operating status of each device.

8. A two-stage fluidized freezing equipment adjustment and control system, characterized in that: include: A mesh belt B1 is provided at a certain position and is used for conveying materials; The second-stage mesh belt B2 is set at the second stage and is used to transport materials; At least one set of dry cooling fans, arranged at the feed inlet, for adjusting the feed temperature and humidity in real time; Two sets of regulating air valves are respectively set on the first mesh belt B1 and the second mesh belt B2 to adjust the air volume; At least one agitator, arranged inside the equipment, for preventing the material from agglomerating; At least one fan, arranged corresponding to the mixer, for providing air volume; The PLC control system dynamically adjusts the operating parameters of the dry cooling fan, regulating air valve, mixer, fan, first mesh belt B1 and second mesh belt B2 in combination with the temperature and humidity sensors, cooling feedback and material status information.

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