Fruit and vegetable freeze-drying dehydrator with intelligent pretreatment function and intelligent control method of fruit and vegetable freeze-drying dehydrator

Abstract

The invention relates to the technical field of freeze-drying dehydrators, in particular to an intelligent pretreatment fruit and vegetable freeze-drying dehydrator and an intelligent control method thereof.The intelligent pretreatment fruit and vegetable freeze-drying dehydrator comprises a base and further comprises a pretreatment module installed above the base, the pretreatment module comprises a stainless steel conveying assembly, a spraying system and a slitting system, and the stainless steel conveying assembly, the spraying system and the slitting system are arranged in the pretreatment module; the freeze-drying cabin module is mounted above the base; the vacuum refrigeration module is mounted above the base, and the frozen fruits and vegetables in the freeze-drying cabin module are conveyed to the vacuum refrigeration module through a conveying assembly after being frozen; the pretreatment module and the freeze-drying cabin module as well as the freeze-drying cabin module and the vacuum refrigeration module are quickly assembled through standardized interfaces; the control module is used for controlling starting and parameters of the preprocessing module, the freeze-drying cabin module and the vacuum refrigeration module; according to the device, all the modules are rapidly assembled, the whole device is installed on a container type base, and transportation and on-site deployment are facilitated.

Description

Technical Field

[0001] This invention relates to the field of freeze-drying machines, and more particularly to an intelligent pretreatment freeze-drying machine for fruits and vegetables and its intelligent control method. Background Technology

[0002] A freeze-drying dehydrator is a specialized piece of equipment for fruit and vegetable processing. It freezes and dries fruits and vegetables in a low-temperature, vacuum environment, causing the water in the fruits and vegetables to sublimate directly from a solid state to a gaseous state, thus achieving dehydration. This process can retain the nutritional components, color, and flavor of fruits and vegetables to the greatest extent. The resulting freeze-dried fruits and vegetables have the characteristics of good rehydration and long shelf life, and are widely used in the food processing and preservation fields.

[0003] Traditional freeze-drying equipment for fruits and vegetables requires fixed installation, is bulky and difficult to transport, making it difficult to meet the needs of decentralized processing in the place of origin. Existing equipment relies on manual operation and lacks remote quality monitoring, which can easily lead to fluctuations in product quality. In addition, the equipment has a complex structure, high maintenance costs, and is difficult for non-professionals to operate. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an intelligent pretreatment freeze-drying dehydrator for fruits and vegetables and its intelligent control method.

[0005] In a first aspect, the present invention provides an intelligent pre-treatment freeze-drying dehydrator for fruits and vegetables, comprising a base, and further comprising:

[0006] A pretreatment module is installed above the base. The pretreatment module includes an internal stainless steel conveying assembly, a spraying system, and a cutting system. The stainless steel conveying assembly is used to convey fruits and vegetables, the spraying system is used to perform high-pressure spraying and cleaning on the conveyed fruits and vegetables, and the cutting system is used to cut the cleaned fruits and vegetables.

[0007] A freeze-drying chamber module is installed above the base. The freeze-drying chamber module is used to freeze the fruits and vegetables that have been cut and placed inside at low temperatures.

[0008] A vacuum refrigeration module is installed above the base. Frozen fruits and vegetables inside the freeze-drying chamber are transported to the vacuum refrigeration module through a conveying component after freezing. The vacuum refrigeration module is used to perform vacuum sublimation on the incoming frozen fruits and vegetables. In a vacuum environment, the temperature inside the chamber is gradually increased, so that the ice crystals in the fruits and vegetables directly sublimate into water vapor and are extracted by the vacuum pump.

[0009] The pretreatment module and the freeze-drying chamber module, as well as the freeze-drying chamber module and the vacuum refrigeration module, are quickly assembled through standardized interfaces.

[0010] The control module is used to control the start-up and parameters of the pretreatment module, the freeze-drying chamber module, and the vacuum refrigeration module;

[0011] The pretreatment module uses stainless steel conveying components, a spraying system, and a cutting system to complete the washing and cutting of fruits and vegetables;

[0012] The freeze-drying chamber module rapidly cools the processed fruits and vegetables to -℃ to -℃, causing the water in the fruits and vegetables to freeze into ice crystals. Rapid pre-freezing can form small ice crystals, reducing damage to the cell structure of fruits and vegetables and preventing shrinkage and deformation during the drying process, thus helping to maintain the original shape and texture of fruits and vegetables.

[0013] The conveying component transports the frozen fruits and vegetables to the vacuum refrigeration module. In a vacuum environment, the vacuum refrigeration module controls the temperature inside the chamber to gradually increase, causing the ice crystals in the fruits and vegetables to directly sublimate into water vapor and be extracted by the vacuum pump. The temperature and pressure are precisely controlled during the process, which is generally carried out at a relatively low temperature to ensure that the nutritional components and quality of the fruits and vegetables are not affected. As the water continues to sublimate, the fruits and vegetables gradually dry, but still maintain their original structure and shape.

[0014] The pretreatment module and the freeze-drying chamber module, as well as the freeze-drying chamber module and the vacuum refrigeration module, are quickly assembled through standardized interfaces.

[0015] In summary, the entire system is assembled on a container base through rapid assembly of the various modules, facilitating transportation and on-site deployment.

[0016] Preferably, the freeze-drying chamber module includes:

[0017] The freeze-drying chamber has a second inclined conveying pipe fixed to one end of the freeze-drying chamber facing the pretreatment chamber.

[0018] The first plug-in connector is fixed to the other end of the freeze-drying chamber;

[0019] The freeze-drying chamber inner liner is detachably installed inside the freeze-drying chamber and is used to adapt to different sizes of freeze-drying chamber inner liners according to different processed fruits and vegetables. The interior of the freeze-drying chamber inner liner is provided with a nano-coating.

[0020] The freeze-drying chamber uses a detachable inner liner to accommodate different fruit and vegetable sizes. The inner liner is coated with a food-grade nano-coating to prevent dried fruits and vegetables from clumping together during the freezing process, thus avoiding material transport obstruction and improving the separation efficiency of materials after freeze-drying.

[0021] Preferably, it also includes:

[0022] An integrated remote monitoring system is used in conjunction with the control module to remotely monitor the control parameters of the pretreatment module, the freeze-drying chamber module, and the vacuum refrigeration module.

[0023] The integrated remote monitoring system includes a sensor group, an Internet of Things terminal, and a cloud platform to perform real-time analysis and remote control of the freeze-drying process parameters of the pretreatment module, the freeze-drying chamber module, and the vacuum refrigeration module.

[0024] The integrated remote monitoring system transmits data via G / G and supports access via PC and mobile APP. By monitoring and controlling the internal parameters of each module, it can adjust the parameters within the module in real time, which is conducive to intelligent control of the fruit and vegetable drying process and avoids the occurrence of unqualified finished products due to parameter differences during the preparation process.

[0025] Preferably, it also includes:

[0026] A preset processing program, which includes control parameters and control sequence for the pretreatment module, the freeze-drying chamber module, and the vacuum refrigeration module applicable to different fruits and vegetables, and is stored in the control module;

[0027] The voice guidance system is stored in the control module to provide voice guidance that adapts to different control sequences of the preset processing programs. When the preset processing program is selected, the corresponding voice guidance system is triggered to provide voice guidance.

[0028] The preset processing program can pre-set the start order, start time, and start parameters of each module according to different fruits and vegetables. This allows staff to simply select the appropriate type of fruit or vegetable and then operate the system according to the voice guidance, eliminating the need for complicated operations and improving the ease of operation of the equipment.

[0029] Preferably, the preprocessing module further includes:

[0030] The pretreatment chamber has a first inclined conveying pipe that is plugged into and adapted to the second inclined conveying pipe at one end facing the freeze-drying chamber, and an inlet is provided at the other end of the pretreatment chamber.

[0031] The stainless steel conveying assembly includes a first mounting frame and a plurality of first rotating rollers. All the first rotating rollers are rotatably mounted on the first mounting frame. The outer rings of all the first rotating rollers are connected to a stainless steel conveyor belt. A first motor that drives the first rotating rollers to rotate is fixed on the first mounting frame.

[0032] The spray system includes a mesh cover and multiple high-pressure nozzles. The mesh cover is fixed on the first mounting frame and covers the stainless steel conveyor belt. The high-pressure nozzles are fixed in a linear array on the inner wall of the pretreatment chamber and are connected to an external water source.

[0033] Fruits and vegetables are fed into the pretreatment chamber through the inlet onto the stainless steel conveyor belt. A first motor drives a first rotating roller to rotate, which in turn supports the stainless steel conveyor belt. The conveyor belt then transports the fruits and vegetables to the spraying system. High-pressure nozzles in the spraying system are connected to an external water source, spraying clean water from the source at high pressure. The high-pressure water passes through a mesh cover and sprays onto the fruits and vegetables, cleaning them. The cleaned fruits and vegetables continue to be transported by the stainless steel conveyor belt to the slitting system for slitting. The slitting fruits and vegetables are then transported through a first inclined conveyor pipe, which is connected to a second inclined conveyor pipe, thus transporting the slitting fruits and vegetables into the freeze-drying chamber module for freezing.

[0034] Preferably, the slitting system includes:

[0035] The lifting box is vertically slidably installed at one end of the mesh cover facing the first inclined conveying pipe;

[0036] A cutting plate is fixed to the bottom of the lifting box. The cutting plate includes an outer frame and multiple cutting blades fixed in a linear array inside the outer frame.

[0037] The first cylinder is fixed to the top of the pretreatment chamber, and the first cylinder drives the lifting box to move vertically through the telescopic rod;

[0038] An opening is formed on the side wall of the lifting box, and when the lifting box rises to the top, the opening is aligned with the first inclined conveying pipe;

[0039] A support platform, fixed inside the pretreatment chamber and located directly below the cutting plate, is used to support the stainless steel conveyor belt.

[0040] The first cylinder drives the lifting box to move vertically, which in turn drives the cutting plate to move vertically. The cutting blade in the cutting plate cuts the fruits and vegetables as it moves downward. The cut fruits and vegetables enter the interior of the lifting box, and as the lifting box moves upward, they fall through the opening and are then discharged along the first inclined conveyor pipe.

[0041] Preferably, the freeze-drying chamber module further includes:

[0042] The second cylinder is fixed to the top of the freeze-drying chamber;

[0043] The first heat insulation baffle is slidably installed on the inner wall of the freeze-drying chamber to block the opening of the second inclined conveying pipe, and the second cylinder is used to drive the first heat insulation baffle to move vertically.

[0044] The second heat insulation baffle is vertically slidably inserted into the inside of the first plug-in connection port;

[0045] The third cylinder is fixed to the top of the freeze-drying chamber and is used to drive the second heat insulation baffle to move vertically.

[0046] A first temperature regulator is used to regulate the temperature inside the freeze-drying chamber;

[0047] The second cylinder drives the first insulation baffle to move vertically to block the opening of the second inclined conveying pipe. The third cylinder drives the second insulation baffle to move vertically to block the inside of the first plug-in connection port, thereby sealing the inside of the freeze-drying chamber to form an independent space, so as to facilitate the regulation of the temperature inside the freeze-drying chamber.

[0048] Preferably, the vacuum cooling module includes:

[0049] A vacuum refrigeration chamber, wherein one end of the vacuum refrigeration chamber facing the freeze-drying chamber is fixed with a second plug-in connection port that is compatible with the first plug-in connection port;

[0050] The second temperature regulator is used to regulate the temperature inside the vacuum cooling chamber.

[0051] A negative pressure generator is used to extract the gas inside the vacuum refrigeration chamber to create a vacuum.

[0052] The second temperature regulator inside the vacuum refrigeration chamber is used to regulate the temperature, and the negative pressure generator regulates the internal negative pressure to create a vacuum environment inside the vacuum refrigeration chamber, so as to regulate the temperature in the vacuum environment and sublimate the ice crystals frozen in the dried fruits and vegetables.

[0053] Preferably, the conveying assembly includes:

[0054] Two second mounting brackets are respectively installed inside the freeze-drying chamber and the vacuum refrigeration chamber;

[0055] Two sets of second rotating rollers are respectively mounted in a linear array on two second mounting frames. Adjacent second rotating rollers in the same set are connected by synchronous pulleys and synchronous belts.

[0056] Two second motors are respectively fixed on two second mounting brackets, and the two second motors are used to drive one of the two sets of second rotating rollers to rotate.

[0057] A movable plate is placed on the second rotating roller, and the second rotating roller rotates to move the movable plate.

[0058] Secondly, a smart control method for a smart pre-processing freeze-drying dehydrator for fruits and vegetables is provided, applicable to a smart pre-processing freeze-drying dehydrator for fruits and vegetables as described in any one of claims, characterized in that the control method includes the following steps:

[0059] The control unit acquires freeze-drying dehydration information from the sensor group, wherein the freeze-drying dehydration includes a first temperature, a second temperature, and a negative pressure value.

[0060] The control unit sends the freeze-drying dehydration information to the cloud platform and the IoT terminal, and compares the freeze-drying dehydration information with the standard information range from the cloud platform. When the freeze-drying dehydration information meets the standard information range, no additional control is performed. When it does not meet the standard information range, the control unit sends a warning message to the IoT terminal.

[0061] The control unit obtains adjustment information from the user of the IoT terminal after making adjustments based on the warning information, and sends the adjustment information to the control module to control the adjustment.

[0062] Compared with the prior art, the present invention has the following beneficial effects:

[0063] The modules are quickly assembled and installed on a container base, facilitating transportation and on-site deployment. Attached Figure Description

[0064] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0065] Figure 2 This is a schematic diagram of the overall cross-section of the present invention. Figure 1 .

[0066] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0067] Figure 4 This is a schematic diagram of the internal structure of the pretreatment chamber of the present invention.

[0068] Figure 5 This is a schematic diagram of the overall cross-section of the present invention. Figure 2 .

[0069] Figure 6 For the present invention Figure 5 Schematic diagram of structure B in the middle.

[0070] In the diagram: 1. Pre-treatment chamber; 101. Feed inlet; 102. Stainless steel conveyor belt; 103. First rotating roller; 104. First motor; 105. Mesh cover; 106. High-pressure nozzle; 107. Cutting plate; 108. Lifting box; 109. First cylinder; 110. First inclined conveying pipe; 111. First mounting frame; 112. Opening; 113. Support platform; 2. Freeze-drying chamber; 201. Second inclined conveying pipe; 202. Second cylinder; 20 3. First heat insulation baffle; 204. First plug-in connection port; 205. Second heat insulation baffle; 206. Third cylinder; 207. Inner liner of freeze-drying chamber; 3. Vacuum refrigeration chamber; 301. Second plug-in connection port; 4. Base; 401. Electric push rod; 402. Connecting plate; 403. First slide rail; 404. Second slide rail; 405. Mounting plate; 5. Moving plate; 501. Second rotating roller; 502. Second mounting bracket; 503. Second motor. Detailed Implementation

[0071] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0072] like Figures 1 to 6 The intelligent pre-processing freeze-drying dehydrator for fruits and vegetables shown includes a base 4, and also includes:

[0073] The pretreatment module is installed above the base 4. The pretreatment module includes an internal stainless steel conveying assembly, a spraying system, and a cutting system. The stainless steel conveying assembly is used to convey fruits and vegetables, the spraying system is used to spray and clean the conveyed fruits and vegetables under high pressure, and the cutting system is used to cut the cleaned fruits and vegetables.

[0074] The freeze-drying chamber module is installed above the base 4. The freeze-drying chamber module is used to freeze the fruits and vegetables that have been cut and put into the chamber at low temperature.

[0075] The vacuum refrigeration module is installed above the base 4. After freezing, the frozen fruits and vegetables inside the freeze-drying chamber are transported to the vacuum refrigeration module through the conveying component. The vacuum refrigeration module is used to perform vacuum sublimation on the incoming frozen fruits and vegetables. In a vacuum environment, the temperature inside the chamber is gradually increased, so that the ice crystals in the fruits and vegetables are directly sublimated into water vapor and extracted by the vacuum pump.

[0076] The pretreatment module and the freeze-drying chamber module, as well as the freeze-drying chamber module and the vacuum refrigeration module, are quickly assembled through standardized interfaces.

[0077] The control module is used to control the start-up and parameters of the pretreatment module, freeze-drying chamber module, and vacuum refrigeration module;

[0078] Traditional freeze-drying equipment for fruits and vegetables requires fixed installation, is bulky and difficult to transport, making it difficult to meet the needs of decentralized processing in the place of origin. Existing equipment relies on manual operation and lacks remote quality monitoring, which can easily lead to fluctuations in product quality. In addition, the equipment has a complex structure, high maintenance costs, and is difficult for non-professionals to operate.

[0079] This embodiment of the present invention can solve the above problems. The specific implementation method is as follows: the pretreatment module adopts a stainless steel conveying assembly, a spraying system, and a cutting system to complete the washing and cutting of fruits and vegetables.

[0080] The freeze-drying chamber module rapidly cools the processed fruits and vegetables to -35℃ to -40℃, causing the water in the fruits and vegetables to freeze into ice crystals. Rapid pre-freezing can form small ice crystals, reducing damage to the cell structure of fruits and vegetables and preventing shrinkage and deformation during the drying process, thus helping to maintain the original shape and texture of fruits and vegetables.

[0081] The conveying component transports the frozen fruits and vegetables to the vacuum refrigeration module. In a vacuum environment, the vacuum refrigeration module controls the temperature inside the chamber to gradually increase, causing the ice crystals in the fruits and vegetables to directly sublimate into water vapor and be extracted by the vacuum pump. The temperature and pressure are precisely controlled during the process, which is generally carried out at a relatively low temperature to ensure that the nutritional components and quality of the fruits and vegetables are not affected. As the water continues to sublimate, the fruits and vegetables gradually dry, but still maintain their original structure and shape.

[0082] The pretreatment module and the freeze-drying chamber module, as well as the freeze-drying chamber module and the vacuum refrigeration module, are quickly assembled through standardized interfaces.

[0083] It should be noted that the bottom of the pretreatment module, the freeze-drying chamber module, and the vacuum refrigeration module are all slidably connected to the mounting plate 405 via the second slide rail 404. The mounting plate 405 is slidably connected to the top of the base 4 via the first slide rail 403. The bottom of the two mounting plates 405 on the right side is fixed with an electric push rod 401, and the bottom of the two mounting plates 405 on the left side is fixed with a connecting plate 402. The telescopic rods of the two electric push rods 401 are respectively connected to the two connecting plates 402 to adjust the distance between adjacent mounting plates 405.

[0084] In summary, the entire system is assembled on a container base through rapid assembly of the various modules, facilitating transportation and on-site deployment.

[0085] As an optional embodiment, the freeze-drying chamber module includes:

[0086] The freeze-drying chamber 2 has a second inclined conveying pipe 201 fixed at one end of the freeze-drying chamber 2 facing the pretreatment chamber 1;

[0087] The first plug-in connector 204 is fixed to the other end of the freeze-drying chamber 2;

[0088] The freeze-drying chamber inner liner 207 is detachably installed inside the freeze-drying chamber 2. It is used to adapt different sizes of freeze-drying chamber inner liners 207 according to different processed fruits and vegetables. The interior of the freeze-drying chamber inner liner 207 is equipped with a nano-coating.

[0089] The freeze-drying chamber uses a detachable freeze-drying chamber inner liner 207, which is suitable for different fruit and vegetable sizes. The freeze-drying chamber inner liner 207 is coated with a food-grade nano-coating to prevent dried fruits and vegetables from adhering and clumping during the freezing process, which would hinder material transportation and improve the separation efficiency of materials after freeze-drying.

[0090] As an optional embodiment, it also includes:

[0091] An integrated remote monitoring system is used in conjunction with the control module to remotely monitor the control parameters of the pretreatment module, freeze-drying chamber module, and vacuum refrigeration module.

[0092] The integrated remote monitoring system includes a sensor array, an IoT terminal, and a cloud platform to perform real-time analysis and remote control of the freeze-drying process parameters of the pretreatment module, freeze-drying chamber module, and vacuum refrigeration module.

[0093] The integrated remote monitoring system transmits data via 4G / 5G and supports access via PC and mobile APP. By monitoring and controlling the internal parameters of each module, it can adjust the parameters within the module in real time, which is conducive to intelligent control of the fruit and vegetable drying process and avoids the occurrence of unqualified finished products due to parameter differences during the preparation process.

[0094] As an optional embodiment, it also includes:

[0095] The preset processing program includes control parameters and control sequence for pretreatment modules, freeze-drying chamber modules, and vacuum refrigeration modules suitable for different fruits and vegetables, which are stored in the control module.

[0096] The voice guidance system is a voice guidance system that adapts to the control sequence of different preset processing programs. It is stored in the control module and is triggered to provide voice guidance when a preset processing program is selected.

[0097] The preset processing program can pre-set the start order, start time, and start parameters of each module according to different fruits and vegetables. This allows staff to simply select the appropriate type of fruit or vegetable and then operate the system according to the voice guidance, eliminating the need for complicated operations and improving the ease of operation of the equipment.

[0098] As an optional embodiment, the preprocessing module further includes:

[0099] Pre-treatment chamber 1, with a first inclined conveying pipe 110 that is compatible with the second inclined conveying pipe 201 fixed at one end of the pre-treatment chamber 1 facing the freeze-drying chamber 2, and a feed inlet 101 opened at the other end of the pre-treatment chamber 1.

[0100] The stainless steel conveying assembly includes a first mounting frame 111 and a plurality of first rotating rollers 103. All the first rotating rollers 103 are rotatably mounted on the first mounting frame 111. The outer rings of all the first rotating rollers 103 are connected to a stainless steel conveyor belt 102. A first motor 104 for driving the first rotating rollers 103 to rotate is fixed on the first mounting frame 111.

[0101] The spray system includes a mesh cover 105 and multiple high-pressure nozzles 106. The mesh cover 105 is fixed on the first mounting frame 111 and covers the stainless steel conveyor belt 102. The high-pressure nozzles 106 are fixed in a linear array on the inner wall of the pretreatment chamber 1 and are connected to an external water source.

[0102] Fruits and vegetables are placed above the stainless steel conveyor belt 102 inside the pretreatment chamber 1 through the inlet 101. The first motor 104 drives the first rotating roller 103 to rotate, and the first rotating roller 103 provides transmission support for the stainless steel conveyor belt 102. The stainless steel conveyor belt 102 transports the fruits and vegetables. When the fruits and vegetables are transported to the spraying system, the high-pressure nozzle 106 in the spraying system is connected to an external water source and sprays clean water from the connected water source at high pressure. The high-pressure sprayed clean water passes through the mesh cover 105 and sprays onto the fruits and vegetables to clean them. The cleaned fruits and vegetables continue to be transported by the stainless steel conveyor belt 102 to the cutting system for cutting. The cut fruits and vegetables are transported through the first inclined conveyor pipe 110, which is connected to the second inclined conveyor pipe 201, thereby transporting the cut fruits and vegetables into the freeze-drying chamber module for freezing.

[0103] As an optional embodiment, the slitting system includes:

[0104] The lifting box 108 is vertically slidably installed at one end of the mesh cover 105 facing the first inclined conveying pipe 110;

[0105] The cutting plate 107 is fixed to the bottom of the lifting box 108. The cutting plate 107 includes an outer frame and multiple cutting blades fixed in a linear array inside the outer frame.

[0106] The first cylinder 109 is fixed to the top of the pretreatment chamber 1. The first cylinder 109 drives the lifting box 108 to move vertically through the telescopic rod.

[0107] An opening 112 is provided on the side wall of the lifting box 108. When the lifting box 108 rises to the top, the opening 112 is aligned with the first inclined conveying pipe 110.

[0108] The support platform 113 is fixed inside the pretreatment chamber 1 and located directly below the cutting plate 107, and is used to support the stainless steel conveyor belt 102.

[0109] The first cylinder 109 drives the lifting box 108 to move vertically, and the lifting box 108 drives the cutting plate 107 to move vertically. The cutting blade in the cutting plate 107 cuts the fruits and vegetables as it moves downward. The cut fruits and vegetables enter the interior of the lifting box 108. As the lifting box 108 moves upward, they fall through the opening 112 and are then discharged along the first inclined conveying pipe 110.

[0110] As an optional embodiment, the freeze-drying chamber module also includes:

[0111] The second cylinder 202 is fixed to the top of the freeze-drying chamber 2;

[0112] The first heat insulation baffle 203 is slidably installed on the inner wall of the freeze-drying chamber 2 to block the opening of the second inclined conveying pipe 201. The second cylinder 202 is used to drive the first heat insulation baffle 203 to move vertically.

[0113] The second heat insulation baffle 205 is vertically slidably inserted into the inside of the first plug-in connection port 204;

[0114] The third cylinder 206 is fixed to the top of the freeze-drying chamber 2. The third cylinder 206 is used to drive the second heat insulation baffle 205 to move vertically.

[0115] The first temperature regulator is used to regulate the temperature inside the freeze-drying chamber 2;

[0116] The second cylinder 202 drives the first heat insulation baffle 203 to move vertically to block the opening of the second inclined conveying pipe 201. The third cylinder 206 drives the second heat insulation baffle 205 to move vertically to block the inside of the first plug-in connection port 204, thereby allowing the inside of the freeze-drying chamber 2 to be sealed to form an independent space, so as to facilitate the adjustment of the temperature inside the freeze-drying chamber 2.

[0117] As an optional embodiment, the vacuum cooling module includes:

[0118] The vacuum refrigeration chamber 3 has a second plug-in connection port 301 that is compatible with the first plug-in connection port 204 at one end facing the freeze-drying chamber 2.

[0119] The second temperature regulator is used to regulate the temperature inside the vacuum cooling chamber 3.

[0120] The negative pressure generator is used to extract the gas inside the vacuum refrigeration chamber 3 to create a vacuum.

[0121] The second temperature regulator inside the vacuum refrigeration chamber 3 is used to regulate the temperature, and the negative pressure generator regulates the internal negative pressure to create a vacuum environment inside the vacuum refrigeration chamber 3, so as to regulate the temperature in the vacuum environment and sublimate the ice crystals frozen in the dried fruits and vegetables.

[0122] As an optional embodiment, the delivery component includes:

[0123] Two second mounting brackets 502 are respectively installed inside the freeze-drying chamber 2 and the vacuum refrigeration chamber 3;

[0124] Two sets of second rotating rollers 501 are mounted on two second mounting frames 502 in a linear array. Adjacent second rotating rollers 501 in the same set are connected by synchronous pulleys and synchronous belts.

[0125] Two second motors 503 are respectively fixed on two second mounting brackets 502, and the two second motors 503 are used to drive one of the two sets of second rotating rollers 501 to rotate.

[0126] The movable plate 5 is placed on the second rotating roller 501. After the second rotating roller 501 rotates, it drives the movable plate 5 to move.

[0127] After the second motor 503 starts, it drives the second rotating roller 501 to rotate. The second rotating roller 501 drives the moving plate 5 to move, so as to move the fruits and vegetables piled on the moving plate 5, thereby transporting the fruits and vegetables from the freeze-drying chamber module to the vacuum refrigeration module.

[0128] A smart control method for a smart pre-processing freeze-drying dehydrator for fruits and vegetables, the control method comprising the following steps:

[0129] The control unit acquires freeze-drying dehydration information from the sensor group, which includes the first temperature, the second temperature, and the negative pressure value.

[0130] The control unit sends freeze-drying information to the cloud platform and IoT terminal, and compares the freeze-drying information with the standard information range from the cloud platform. When the freeze-drying information meets the standard information range, no additional control is performed. When the information does not meet the standard information range, the control unit sends a warning message to the IoT terminal.

[0131] The control unit obtains the adjustment information from the IoT terminal after the user makes adjustments based on the warning information, and sends the adjustment information to the control module to control the adjustment.

[0132] Working principle of the invention: The pretreatment module uses stainless steel conveying components, a spraying system, and a cutting system to complete the washing and cutting of fruits and vegetables;

[0133] The freeze-drying chamber module rapidly cools the processed fruits and vegetables to -35℃ to -40℃, causing the water in the fruits and vegetables to freeze into ice crystals. Rapid pre-freezing can form small ice crystals, reducing damage to the cell structure of fruits and vegetables and preventing shrinkage and deformation during the drying process, thus helping to maintain the original shape and texture of fruits and vegetables.

[0134] The conveying component transports the frozen fruits and vegetables to the vacuum refrigeration module. In a vacuum environment, the vacuum refrigeration module controls the temperature inside the chamber to gradually increase, causing the ice crystals in the fruits and vegetables to directly sublimate into water vapor and be extracted by the vacuum pump. The temperature and pressure are precisely controlled during the process, which is generally carried out at a relatively low temperature to ensure that the nutritional components and quality of the fruits and vegetables are not affected. As the water continues to sublimate, the fruits and vegetables gradually dry, but still maintain their original structure and shape.

[0135] The pretreatment module and the freeze-drying chamber module, as well as the freeze-drying chamber module and the vacuum refrigeration module, are quickly assembled through standardized interfaces.

[0136] In summary, the entire system is assembled on a container base through rapid assembly of the various modules, facilitating transportation and on-site deployment.

[0137] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A smart pre-processing freeze-drying dehydrator for fruits and vegetables, comprising a base (4), characterized in that, Also includes: The pretreatment module is installed above the base (4). The pretreatment module includes an internal stainless steel conveying assembly, a spraying system, and a cutting system. The stainless steel conveying assembly is used to convey fruits and vegetables. The spraying system is used to spray and clean the conveyed fruits and vegetables under high pressure. The cutting system is used to cut the cleaned fruits and vegetables. The freeze-drying chamber module is installed above the base (4). The freeze-drying chamber module is used to freeze the fruits and vegetables that have been cut and put into the chamber at low temperature. The vacuum refrigeration module is installed above the base (4). After freezing, the frozen fruits and vegetables inside the freeze-drying chamber are transported to the vacuum refrigeration module through the conveying component. The vacuum refrigeration module is used to perform vacuum sublimation on the incoming frozen fruits and vegetables. In a vacuum environment, the temperature inside the chamber is gradually increased so that the ice crystals in the fruits and vegetables are directly sublimated into water vapor and extracted by the vacuum pump. The pretreatment module and the freeze-drying chamber module, as well as the freeze-drying chamber module and the vacuum refrigeration module, are quickly assembled through standardized interfaces. The control module is used to control the start-up and parameters of the pretreatment module, the freeze-drying chamber module, and the vacuum refrigeration module.

2. The intelligent pretreatment freeze-drying and dehydrating machine for fruits and vegetables according to claim 1, characterized in that, The freeze-drying chamber module includes: The freeze-drying chamber (2) has a second inclined conveying pipe (201) fixed at one end facing the pretreatment chamber (1); The first plug-in connector (204) is fixed to the other end of the freeze-drying chamber (2); The freeze-drying chamber inner liner (207) is detachably installed inside the freeze-drying chamber (2) and is used to adapt the freeze-drying chamber inner liner (207) of different sizes according to different processed fruits and vegetables. The interior of the freeze-drying chamber inner liner (207) is provided with a nano-coating.

3. The intelligent pretreatment freeze-drying and dehydrating machine for fruits and vegetables according to claim 2, characterized in that, Also includes: An integrated remote monitoring system is used in conjunction with the control module to remotely monitor the control parameters of the pretreatment module, the freeze-drying chamber module, and the vacuum refrigeration module. The integrated remote monitoring system includes a sensor array, an IoT terminal, and a cloud platform to perform real-time analysis and remote control of the freeze-drying process parameters of the pretreatment module, the freeze-drying chamber module, and the vacuum refrigeration module.

4. The intelligent pretreatment freeze-drying and dehydrating machine for fruits and vegetables according to claim 3, characterized in that, Also includes: A preset processing program, which includes control parameters and control sequence for the pretreatment module, the freeze-drying chamber module, and the vacuum refrigeration module applicable to different fruits and vegetables, and is stored in the control module; The voice guidance system is stored in the control module to provide voice guidance that adapts to different control sequences of the preset processing programs. When the preset processing program is selected, the corresponding voice guidance system is triggered to provide voice guidance.

5. The intelligent pretreatment freeze-drying and dehydrating machine for fruits and vegetables according to claim 3, characterized in that, The preprocessing module further includes: The pretreatment chamber (1) has a first inclined conveying pipe (110) that is plugged into and adapted to the second inclined conveying pipe (201) at one end facing the freeze-drying chamber (2), and a feed inlet (101) is provided at the other end of the pretreatment chamber (1). The stainless steel conveying assembly includes a first mounting frame (111) and a plurality of first rotating rollers (103). All the first rotating rollers (103) are rotatably mounted on the first mounting frame (111). The outer rings of all the first rotating rollers (103) are connected to a stainless steel conveyor belt (102) for transmission. A first motor (104) for driving the first rotating rollers (103) to rotate is fixed on the first mounting frame (111). The spray system includes a mesh cover (105) and multiple high-pressure nozzles (106). The mesh cover (105) is fixed on the first mounting frame (111) and covers the stainless steel conveyor belt (102). The high-pressure nozzles (106) are fixed in a linear array on the inner wall of the pretreatment chamber (1) and are connected to an external water source.

6. The intelligent pretreatment freeze-drying and dehydrating machine for fruits and vegetables according to claim 5, characterized in that, The slitting system includes: The lifting box (108) is vertically slidably installed at one end of the mesh cover (105) facing the first inclined conveying pipe (110); A cutting plate (107) is fixed to the bottom of the lifting box (108). The cutting plate (107) includes an outer frame and multiple cutting blades fixed in a linear array inside the outer frame. The first cylinder (109) is fixed to the top of the pretreatment chamber (1), and the first cylinder (109) drives the lifting box (108) to move vertically through the telescopic rod; An opening (112) is provided on the side wall of the lifting box (108), and when the lifting box (108) rises to the top, the opening (112) is aligned with the first inclined conveying pipe (110). A support platform (113) is fixed inside the pretreatment chamber (1) and located directly below the cutting plate (107) to support the stainless steel conveyor belt (102).

7. The intelligent pretreatment freeze-drying and dehydrating machine for fruits and vegetables according to claim 3, characterized in that, The freeze-drying chamber module also includes: The second cylinder (202) is fixed to the top of the freeze-drying chamber (2); The first heat insulation baffle (203) is slidably installed on the inner wall of the freeze-drying chamber (2) to block the opening of the second inclined conveying pipe (201), and the second cylinder (202) is used to drive the first heat insulation baffle (203) to move vertically. The second heat insulation baffle (205) is vertically slidably inserted into the inside of the first plug-in connection port (204); The third cylinder (206) is fixed to the top of the freeze-drying chamber (2), and the third cylinder (206) is used to drive the second heat insulation baffle (205) to move vertically; A first temperature regulator is used to regulate the temperature inside the freeze-drying chamber (2).

8. The intelligent pretreatment freeze-drying and dehydrating machine for fruits and vegetables according to claim 3, characterized in that, The vacuum cooling module includes: Vacuum refrigeration chamber (3), one end of which facing the freeze-drying chamber (2) is fixed with a second plug-in connection port (301) that is compatible with the first plug-in connection port (204); The second temperature regulator is used to regulate the temperature inside the vacuum refrigeration chamber (3); A negative pressure generator is used to extract the gas inside the vacuum refrigeration chamber (3) to create a vacuum.

9. The intelligent pretreatment freeze-drying and dehydrating machine for fruits and vegetables according to claim 3, characterized in that, The conveying assembly includes: Two second mounting brackets (502) are respectively installed inside the freeze-drying chamber (2) and the vacuum refrigeration chamber (3); Two sets of second rotating rollers (501) are mounted in a linear array on two second mounting brackets (502). Adjacent second rotating rollers (501) in the same set are connected by synchronous pulleys and synchronous belts. Two second motors (503) are respectively fixed on two second mounting brackets (502), and the two second motors (503) are respectively used to drive one of the two sets of second rotating rollers (501) to rotate; The movable plate (5) is placed on the second rotating roller (501), and the second rotating roller (501) rotates to drive the movable plate (5) to move.

10. An intelligent control method for a smart pre-processing freeze-drying dehydrator for fruits and vegetables, applicable to the smart pre-processing freeze-drying dehydrator for fruits and vegetables described in any one of claims 3 to 8, characterized in that, The control method includes the following steps: The control unit acquires freeze-drying dehydration information from the sensor group, wherein the freeze-drying dehydration includes a first temperature, a second temperature, and a negative pressure value. The control unit sends the freeze-drying dehydration information to the cloud platform and the IoT terminal, and compares the freeze-drying dehydration information with the standard information range from the cloud platform. When the freeze-drying dehydration information meets the standard information range, no additional control is performed. When it does not meet the standard information range, the control unit sends a warning message to the IoT terminal. The control unit obtains adjustment information from the user of the IoT terminal after making adjustments based on the warning information, and sends the adjustment information to the control module to control the adjustment.

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