Fresh meat preservation device and method

Abstract

The invention relates to the technical field of fresh meat preservation, in particular to a fresh meat preservation device and method. The device comprises a plurality of refrigeration houses and a control terminal, fresh-keeping movable frames are arranged in the refrigeration houses, each fresh-keeping movable frame comprises a movable frame body, a plurality of electric field humidity fresh-keeping covers are arranged on the movable frame bodies, in-cover detection assemblies are arranged on the electric field humidity fresh-keeping covers, connection communication assemblies are arranged in the refrigeration houses, and the connection communication assemblies are connected with the movable frame bodies; the electric field humidity preservation cover and the in-cover detection assembly are electrically connected with the connection communication assembly, and the connection communication assembly and the movable frame body communicate with the control terminal. The invention further discloses a method based on the device. By the adoption of the fresh meat preservation device and method, fresh meat is protected through the electric field humidity preservation cover, and it is avoided that the fresh meat is air-dried in the preservation process, and the preservation quality is affected. Meanwhile, the carcass can be subjected to electric field preservation, the uniformity is good, the overall energy consumption is reduced, and the acting effect of the deep part of the carcass is enhanced.

Description

Technical Field

[0001] This invention relates to the field of fresh meat preservation technology, and in particular to a fresh meat preservation device and method. Background Technology

[0002] Meat is an essential food in modern human life. To ensure the supply of fresh meat to cities and to guarantee the processing of meat products, freezing and refrigeration technologies are used to store and preserve meat. Current fresh meat preservation processes involve pre-cooling, acid removal, and low-temperature preservation (or rapid freezing). Throughout this process, the carcass is directly exposed, making it susceptible to localized drying, water loss, and surface discoloration due to direct cold air, affecting the appearance and quality of the meat. Furthermore, existing composite preservation methods often use a holistic electric field for auxiliary preservation. The main drawbacks of this method are: poor uniformity of electric field distribution within the cold storage, leading to localized excessively high or low field strengths; limited effectiveness on deeper parts of the carcass, resulting in inconsistent preservation effects; relatively high energy consumption of the holistic electric field equipment; and poor compatibility with traditional pre-cooling, acid removal, and low-temperature storage processes, making it difficult to achieve precise, efficient, and low-loss integrated preservation control. Summary of the Invention

[0003] The purpose of this invention is to provide a fresh meat preservation device and method to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention provides a fresh meat preservation device, comprising several cold storage units and a control terminal. The cold storage units communicate with the control terminal. A mobile preservation frame is installed inside each cold storage unit. The mobile preservation frame includes a mobile frame body, on which several electric field humidity preservation covers are installed. Each electric field humidity preservation cover is equipped with an in-cover detection component. A connection communication component is installed inside the cold storage unit and is connected to the mobile frame body. The electric field humidity preservation covers and the in-cover detection components are electrically connected to the connection communication component. Both the connection communication component and the mobile frame body communicate with the control terminal.

[0005] Preferably, the electric field humidity preservation cover includes a fixed tube and two symmetrically arranged electrode plates. One end of the fixed tube is fixedly connected to the movable frame. Both ends of the two symmetrically arranged electrode plates are provided with fixing rings. The circumferential side of the fixed tube is connected to the upper fixing ring through a connecting plate. The other end of the fixed tube passes through the fixing ring and is provided with a fixing clamp. Lifting and ventilating components are provided on both sides of the two electrode plates. The lifting and ventilating components include a breathable cloth and a lifting drive motor. The output shaft of the lifting drive motor is connected to a roller. The roller is installed on the top of the two electrode plates through a bearing seat. The roller is provided with a rope groove. A lifting rope is wound in the rope groove. One end of the lifting rope is connected to a gravity block at the bottom of the breathable cloth. The gravity block is slidably arranged in a guide groove on the side of the electrode plate.

[0006] Preferably, the fixed ring is provided with an iris-type sealing component, which includes a mounting ring, a drive gear ring, and a sealing drive motor. The mounting ring is provided with a number of circumferentially distributed drive columns, which are connected to the moving plate. The drive columns are located in the arc-shaped drive through holes on the drive gear ring. The sealing drive motor meshes with the drive gear ring through gears and is installed on the fixed ring. The tops of several movable plates in the iris-type sealing assembly located on the fixing ring above the electrode plate are provided with elastic sealing rings.

[0007] Preferably, the communication connection component includes two symmetrically arranged telescopic cylinders. The telescopic end of the telescopic cylinder is provided with a mounting plate. The mounting plate is provided with an electrical connection plug and two symmetrically arranged positioning columns. The positioning columns are arranged opposite to the positioning holes on the side of the mobile frame.

[0008] Preferably, the in-coverage detection assembly includes a detection telescopic cylinder, the cylinder body of which is fixed to the circumference of the fixed tube, and the telescopic end of the detection telescopic cylinder is provided with a distance sensor, an insertion needle and a telescopic frame. The circumference of the insertion needle is provided with several temperature sensor probes, and the telescopic frame is provided with at least three pH detectors and pressure sensors through contact with the telescopic cylinder. The extension of the telescopic cylinder is determined based on the distance data from the distance sensor, so that the insertion needle is inserted into the body at a set depth, and the temperature sensor probe on the circumference side of the insertion needle performs temperature detection at different depths. After the telescopic frame extends, the contact telescopic cylinder is activated. When the pressure sensor reaches the set value, the pH detector contacts the carcass to perform multi-point pH value detection.

[0009] Preferably, the cold storage facilities are arranged in a T-shape, and the vertically arranged cold storage facilities are, in order, a pre-cooling cold storage facility, a first intermediate cold storage facility, an acid removal cold storage facility, and a second intermediate cold storage facility. The two sides of the second intermediate cold storage facility are respectively connected to a refrigerated cold storage facility and a frozen cold storage facility. The pre-cooling cold storage, acid removal cold storage, refrigerated cold storage and frozen cold storage are all equipped with electric field power supply, refrigeration unit, humidifier, environmental monitoring components and ventilation equipment. The bottom of the pre-cooling cold storage and acid removal cold storage is equipped with a liquid collection tank, and the liquid collection tank is equipped with a liquid level sensor and a drain valve. The first intermediate cold storage is equipped with refrigeration units, humidifiers, environmental monitoring components, and ventilation equipment; The second intermediate cold storage is equipped with a steering turntable, bagging mechanism, air regulating mechanism, refrigeration unit, humidifier, environmental monitoring components, and ventilation equipment.

[0010] Preferably, the bagging mechanism includes a bag rack installed in the second intermediate cold storage, and a bag supporting assembly is provided on the bag rack. The bag supporting assembly includes a bag feeding telescopic cylinder. The cylinder body of the bag feeding telescopic cylinder is installed on the bag rack through a transfer telescopic cylinder. The telescopic end of the bag feeding telescopic cylinder is provided with a bag suction head and a bag supporting telescopic cylinder.

[0011] Preferably, the gas regulating mechanism includes several gas sources, a mixing chamber, a gas supply pump, and a gas extraction pump. The gas sources include oxygen, carbon dioxide, and nitrogen. A flow valve is installed on the gas supply pipe between the gas sources and the mixing chamber. A stirring fan is installed inside the mixing chamber. The stirring fan is driven by a motor to rotate the output pipe of the mixing chamber, which is connected to the gas supply pump. An outlet valve is installed on the outlet pipe of the gas supply pump, and a extraction valve is installed on the extraction pipe of the gas extraction pump. Both the outlet valve and the extraction valve are installed on a sealing cover. The sealing cover is installed on the top of the second intermediate cold storage through a gas regulating lifting cylinder.

[0012] Preferably, a sealing mechanism is provided on the upper fixed ring. The sealing mechanism includes two symmetrically arranged hot-press sealing plates. The hot-press sealing plates are connected to a pressing telescopic cylinder, which is installed on the fixed ring.

[0013] The specific steps of the method based on the above-mentioned fresh meat preservation device are as follows: Step S1: After cleaning, the carcass is suspended inside the electric field humidity preservation cover using fixing clips, and the preservation mobile rack is moved to the pre-cooling cold storage for draining and pre-cooling; the preservation mobile rack is connected to the pre-cooling cold storage via communication, and the temperature of the pre-cooling cold storage is controlled at... Within the range, humidity is controlled at Within the range, the fan speed of the chiller is set to... Within the range, the electric field power supply is activated to perform combined low-temperature and electric field preservation; Before the electric field power is turned on at the initial moment and after the electric field power is turned off 2 hours later, the temperature data of multiple points at different depths of the carcass is detected by the detection component inside the cover. The time interval for the next temperature detection is calculated based on the highest temperature in the multi-point temperature data. Based on the time interval, the multi-point temperature data of multiple depths of the carcass is detected again. When the highest temperature in the multi-point temperature data is higher than the set pre-cooling set value, the time interval for the next temperature detection is calculated and the next temperature detection is performed until the highest temperature in the multi-point temperature data drops below 10 degrees Celsius, and the pre-cooling is completed. Step S2: After pre-cooling, the refrigerated mobile rack directly enters the acid removal cold storage via the first intermediate cold storage. The temperature of the first intermediate cold storage is controlled at... Within the range, humidity is controlled at Within the specified range; the temperature of the acid removal cold storage is controlled at... Within the range, humidity is controlled at Within the range, the fan speed of the chiller is set to... Within the range; The mobile preservation rack is connected to the acid removal cold storage via communication and activates the electric field power supply to perform combined low-temperature and electric field preservation. Before the electric field power is turned on at the initial moment and after the electric field power is turned off 6 hours later, the temperature data and pH value at different depths of the carcass are detected by the detection component inside the enclosure. The time interval for re-detection is calculated based on the highest value among the different pH values. Based on the time interval, the temperature data and pH value at different depths of the carcass are detected again. When the highest value among the different pH values ​​is higher than the set pH value, the time interval for re-detection is calculated and the next detection is performed until the highest value among the different pH values ​​drops below the set pH value and the highest value of the multi-point temperature data is lower than the acid discharge set temperature value, at which point the acid discharge is completed. Step S3: After the acid removal is completed, the fresh-keeping mobile rack is moved into the second intermediate cold storage and packaged according to production needs; The carcass preservation mobile racks needed for production that day are directly put into the turntable, rotated 90° and then put into the cold storage to wait for use; Carcasses required for 2-7 days of production are bagged by a bagging mechanism, filled with preservative gas, and then rotated 90° on a turntable before entering a cold storage room to await use. The temperature of the cold storage room is controlled at... Within the range, humidity is controlled at Within the range, it is connected to the cold storage via communication and the electric field power supply is activated to perform combined low temperature and electric field preservation; Carcasses required for production exceeding 7 days are bagged by a bagging mechanism, filled with preservative gas, and then rotated -90° on a turntable before entering the cold storage for use. The initial temperature of the cold storage is controlled at... Within the range, humidity is controlled at Within the range, the fan speed of the chiller is set to... Within a certain range; it connects to the cold storage via communication and activates the electric field power supply for combined low-temperature and electric field preservation; after a set time, the temperature of the cold storage is controlled at... Within the range, humidity is controlled at Within the range, the fan speed of the chiller is set to... Within the range, and shut down the electric field power supply.

[0014] Therefore, the present invention, employing the above-mentioned fresh meat preservation device and method, has the following beneficial effects: (1) Several electric field humidity preservation covers are installed on the mobile frame to protect the fresh meat and prevent it from drying out during the preservation process, which would affect the preservation quality.

[0015] (2) Two symmetrically arranged electrode plates are installed inside the electric field humidity preservation cover to preserve the carcass in the electric field. The uniformity is good, the overall energy consumption is reduced, and the effect on the deep parts of the carcass is enhanced.

[0016] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a layout diagram of a fresh meat preservation device according to the present invention; Figure 2 This is a schematic diagram of the mobile frame structure of the present invention; Figure 3 This is a schematic diagram of the electric field humidity preservation cover structure of the present invention; Figure 4 This is a schematic diagram of the internal detection component structure of the present invention; Figure 5 This is a schematic diagram of the iris-type sealing component structure of the present invention; Figure 6 This is a schematic diagram of the bagging mechanism and the air regulating mechanism of the present invention.

[0018] Figure Labels 1. Mobile frame; 11. Positioning hole; 2. Electric field humidity preservation cover; 21. Fixing pipe; 211. Fixing clamp; 22. Electrode plate; 221. Guide groove; 23. Fixing ring; 24. Connecting plate; 25. Lifting and ventilation assembly; 251. Breathable cloth; 252. Lifting drive motor; 253. Roller; 254. Lifting rope; 255. Gravity block; 3. In-cover detection assembly; 31. Detection telescopic cylinder; 32. Distance sensor; 33. Insertion needle; 34. Telescopic frame; 35. Temperature sensor probe; 36. Contact telescopic cylinder; 37. pH meter; 38. Pressure sensor; 4. Connection communication assembly; 41. Connection telescopic cylinder; 42. Mounting plate ; 43. Electrical connector plug; 44. Positioning post; 5. Iris sealing assembly; 51. Mounting ring; 511. Drive post; 52. Drive gear ring; 521. Arc-shaped drive through hole; 53. Sealing drive motor; 54. Moving piece; 55. Elastic sealing ring; 6. Bag-feeding mechanism; 61. Bag holder; 62. Bag feeding telescopic cylinder; 63. Bag supporting telescopic cylinder; 64. Bag suction head; 65. Transfer telescopic cylinder; 7. Air regulating mechanism; 71. Air source; 72. Mixing box; 721. Stirring fan; 73. Air supply pump; 74. Air extraction pump; 75. Flow valve; 76. Air outlet valve; 77. Air extraction valve; 8. Sealing mechanism; 81. Hot-press sealing plate; 82. Pressing telescopic cylinder. Detailed Implementation

[0019] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" 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 communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0021] This embodiment of a fresh meat preservation device includes several cold storage units and a control terminal. The cold storage units communicate with the control terminal (a computer controls and displays data for the corresponding devices, using an existing terminal) to achieve control and data acquisition for the corresponding cold storage units.

[0022] like Figure 1 As shown, several cold storage facilities are arranged in a T-shape. The vertically arranged cold storage facilities are, in order, a pre-cooling cold storage, a first intermediate cold storage, an acid removal cold storage, and a second intermediate cold storage. The two sides of the second intermediate cold storage are connected to a refrigerated cold storage and a frozen cold storage, respectively.

[0023] The pre-cooling cold storage, acid removal cold storage, refrigerated cold storage, and frozen cold storage are all equipped with electric field power supply, refrigeration unit, humidifier, environmental monitoring components, and ventilation equipment. The bottom of the pre-cooling cold storage and acid removal cold storage is equipped with a liquid collection tank, and the liquid collection tank is equipped with a liquid level sensor and a drain valve.

[0024] The first intermediate cold storage is equipped with a refrigeration unit, a humidifier, an environmental monitoring component, and a ventilation system. The second intermediate cold storage is equipped with a turntable, a bagging mechanism 6, an air regulating mechanism 7, a refrigeration unit, a humidifier, an environmental monitoring component, and a ventilation system.

[0025] A communication component 4 is installed inside the cold storage room, connected to the mobile frame 1. The communication component 4 includes two symmetrically arranged telescopic cylinders 41. Each telescopic cylinder 41 has a mounting plate 42 at its telescopic end. The mounting plate 42 has an electrical connector 43 and two symmetrically arranged positioning posts 44. The positioning posts 44 are aligned with positioning holes 11 on the side of the mobile frame 1. The electric field humidity preservation cover 2 and the cover-in detection component 3 are electrically connected to the communication component 4. Both the communication component 4 and the mobile frame 1 communicate with a control terminal. This enables reliable electrical connection and data communication with corresponding equipment when the items are fixedly stored inside the cold storage room.

[0026] To facilitate the suspension and transfer of carcasses, a mobile refrigeration rack is installed within the cold storage facility. This mobile rack comprises a mobile frame 1 (driven by a motor and equipped with a positioning module, utilizing an existing load-bearing structure to enable movement of the mobile frame 1), such as... Figures 2-3 As shown, the mobile frame 1 is equipped with several electric field humidity preservation covers 2 (only three are shown in the figure for ease of display; the size of the mobile frame 1 and the number of electric field humidity preservation covers 2 can be adjusted according to actual production needs). The electric field humidity preservation cover 2 includes a fixed tube 21 and two symmetrically arranged electrode plates 22. One end of the fixed tube 21 is fixedly connected to the mobile frame 1. Both ends of the two symmetrically arranged electrode plates 22 are provided with fixing rings 23. The circumferential side of the fixed tube 21 is connected to the upper fixing ring 23 through a connecting plate 24. The other end of the fixed tube 21 passes through the fixing ring 23 and is provided with a fixing clamp 211. Lifting and ventilation components 25 are provided on both sides of the two electrode plates 22. The lifting and ventilation assembly 25 includes a breathable cloth 251 and a lifting drive motor 252. The output shaft of the lifting drive motor 252 is connected to a roller 253. The roller 253 is mounted on the top of the two electrode plates 22 through a bearing seat. The roller 253 is provided with a rope groove, and a lifting rope 254 is wound in the rope groove. One end of the lifting rope 254 is connected to a gravity block 255 at the bottom of the breathable cloth 251. Slider blocks are provided on both sides of the breathable cloth 251. The sliders and gravity blocks 255 are slidably arranged in the guide grooves 221 on the side of the electrode plates 22, so that the breathable cloth 251 can flatly cover the space between the two electrode plates 22, preventing the fresh meat inside from drying out, and applying an electric field to keep it fresh.

[0027] The electric field humidity preservation cover 2 is equipped with an in-cover detection component 3, such as... Figure 4As shown, the in-shell detection assembly 3 includes a detection telescopic cylinder 31. The cylinder body of the detection telescopic cylinder 31 is fixed to the circumference of the fixed tube 21. The telescopic end of the detection telescopic cylinder 31 is equipped with a distance sensor 32, an insertion needle 33, and a telescopic frame 34. Several temperature sensor probes 35 are arranged on the circumference of the insertion needle 33. At least three pH detectors 37 and pressure sensors 38 are arranged on the telescopic frame 34 through a contact telescopic cylinder 36. The extension amount of the detection telescopic cylinder 31 is determined based on the distance data from the distance sensor 32, so that the insertion needle 33 is inserted into the body to a set depth. The temperature sensor probes 35 on the circumference of the insertion needle 33 perform temperature detection at different depths. After the telescopic frame 34 extends, the contact telescopic cylinder 36 is activated. When the pressure of the pressure sensor 38 reaches the set value, the pH detectors 37 contact the body to perform multi-point pH value detection.

[0028] To achieve a seal at the upper and lower ends of the two electrode plates 22, an iris-type sealing component 5 is provided on the fixing ring 23, such as... Figure 5 As shown, the iris-type sealing assembly 5 includes a mounting ring 51, a drive gear ring 52, and a sealing drive motor 53. The mounting ring 51 has several circumferentially distributed drive posts 511, which are connected to the moving pieces 54. The drive posts 511 are located within arc-shaped drive through holes 521 on the drive gear ring 52. The sealing drive motor 53 meshes with the drive gear ring 52 via gears and is mounted on a fixed ring 23. The sealing drive motor 53 drives the drive gear ring 52 to rotate, thereby rotating the multiple moving pieces 54 and adjusting the opening / closing amount to prevent strong cold air from directly blowing into the enclosure and affecting the fresh meat. During the transfer process, the bottom iris-type sealing assembly 5 is closed to prevent liquid from directly draining to the ground. Upon reaching the corresponding fixed position in the cold storage, the bottom iris-type sealing assembly 5 is opened to drain the liquid. During the pre-cooling and acid removal stages, the bottom iris-type sealing assembly 5 can be opened at a small opening to prevent large airflow. An elastic sealing ring 55 is provided on the top of several movable pieces 54 in the iris-type sealing assembly 5 located on the fixing ring 23 above the electrode plate 22, which improves the sealing performance of the upper part when filling with preservative gas.

[0029] If the carcass after aging needs to be stored for a long time, it needs to be bagged and filled with preservative gas, such as... Figure 6 As shown, the bagging mechanism 6 includes a bag rack 61 installed in the second intermediate cold storage. A bag supporting assembly is provided on the bag rack 61. The bag supporting assembly includes a bag feeding telescopic cylinder 62. The cylinder body of the bag feeding telescopic cylinder 62 is installed on the bag rack 61 through a transfer telescopic cylinder 65. The telescopic end of the bag feeding telescopic cylinder 62 is provided with a bag suction head 64 (a negative pressure suction cup connected to a negative pressure device) and a bag supporting telescopic cylinder 63.

[0030] The gas regulating mechanism 7 includes several gas sources 71, a mixing chamber 72, a gas supply pump 73, and a gas extraction pump 74. The gas sources 71 include an oxygen source 71, a carbon dioxide source 71, and a nitrogen source 71. Flow valves 75 are installed on the gas supply pipes of the gas sources 71 and the mixing chamber 72. A stirring fan 721 is installed inside the mixing chamber 72. The stirring fan 721 is driven by a motor to rotate the output pipe of the mixing chamber 72, which is connected to the gas supply pump 73. An outlet valve 76 is installed on the outlet pipe of the gas supply pump 73, and a extraction valve 77 is installed on the extraction pipe of the gas extraction pump 74. Both the outlet valve 76 and the extraction valve 77 are located on a sealing cover. The sealing cover is installed on the top of the second intermediate cold storage via a gas regulating lifting cylinder. A sealing mechanism 8 is installed on the upper fixing ring 23. The sealing mechanism 8 includes two symmetrically arranged hot-press sealing plates 81 (higher than the fixing clamp 211). The hot-press sealing plates 81 are connected to a pressing telescopic cylinder 82, which is installed on the fixing ring 23.

[0031] The bagging and sealing process is as follows: After the preservation moving rack moves to a position opposite to the bagging mechanism 6, the suction head 64 is activated to adsorb the outermost packaging bag. The transfer telescopic cylinder 65 moves the bag-feeding telescopic cylinder 62. The electrostatic effect between the packaging strap and the adjacent packaging bag causes the top of the moving packaging bag to have a small opening. The bag-supporting telescopic cylinder 63 is activated. The telescopic end of the bag-supporting telescopic cylinder 63 is equipped with an elastic telescopic component (in this embodiment, a fixed tube 21 is used, and a telescopic tube is fixed inside the fixed tube 21 by a spring; the top of the telescopic tube is conical). After passing through the suction head 64, the bag enters the bag opening. The bag-supporting telescopic cylinder 63 extends, making the bag opening larger. The bag-feeding telescopic cylinder 62 rises, allowing the body to enter the packaging bag. After the bag-feeding telescopic cylinder 62 rises to a set distance above the iris-type sealing component 5 above, it is released. After the packaging bag (the bag-supporting telescopic cylinder 63 extends back to its initial position and the suction head 64 closes), the bag-feeding telescopic cylinder 62 quickly descends to its initial height, and the upper iris-type sealing component 5 quickly closes, so that the moving piece 54 fits against the outer wall of the fixing tube 21. The upper part of the packaging bag is positioned between the fixing tube 21 and the elastic sealing ring 55. First, the air pump 74 is started to extract air, and then the preservative gas mixed in proportion (the proportion used for pork is: 70% oxygen, 20% carbon dioxide, and 10% nitrogen) is filled into the packaging bag through the air supply pump 73. After filling, the lower iris-type sealing component 5 is closed, the fixing clamp 211 is released, and the heat-sealing plate 81 and the pressing telescopic cylinder 82 are started to seal the upper part of the packaging bag.

[0032] The specific steps of the method based on the above-mentioned fresh meat preservation device are as follows: Step S1: After cleaning, the carcass is suspended inside the electric field humidity preservation cover 2 using the fixing clip 211, and the preservation mobile rack is moved to the pre-cooling cold storage for draining and pre-cooling; the preservation mobile rack is connected to the pre-cooling cold storage via communication, and the temperature of the pre-cooling cold storage is controlled at... Within the range, humidity is controlled at Within the range, the fan speed of the chiller is set to... Within the specified range, the electric field power supply is activated to perform combined low-temperature and electric field preservation.

[0033] Before the electric field power is turned on at the initial moment and after the electric field power is turned off 2 hours later, the multi-point temperature data of the carcass at different depths is detected by the detection component 3 inside the cover. The time interval for the next temperature detection is calculated based on the highest temperature in the multi-point temperature data. Based on the time interval, the multi-point temperature data of the carcass at different depths is detected again. When the highest temperature in the multi-point temperature data is higher than the set pre-cooling set value, the time interval for the next temperature detection is calculated and the next temperature detection is performed until the highest temperature in the multi-point temperature data drops below 10 degrees Celsius, and the pre-cooling is completed.

[0034] Step S2: After pre-cooling, the refrigerated mobile rack directly enters the acid removal cold storage via the first intermediate cold storage. The temperature of the first intermediate cold storage is controlled at... Within the range, humidity is controlled at Within the specified range; the temperature of the acid removal cold storage is controlled at... Within the range, humidity is controlled at Within the range, the fan speed of the chiller is set to... Within the range.

[0035] The mobile preservation rack is connected to the acid removal cold storage via communication and activates an electric field power supply for combined low-temperature and electric field preservation.

[0036] Before the electric field power is turned on at the initial moment and after the electric field power is turned off 6 hours later, the temperature data and pH value at different depths of the carcass are detected by the detection component 3 inside the enclosure. The time interval for re-detection is calculated based on the highest value among the different pH values. Based on the time interval, the temperature data and pH value at different depths of the carcass are detected again. When the highest value among the different pH values ​​is higher than the set pH value, the time interval for re-detection is calculated and the next detection is performed until the highest value among the different pH values ​​drops below the set pH value and the highest value of the multi-point temperature data is lower than the set acid discharge temperature value, at which point the acid discharge is completed.

[0037] Step S3: After the acid removal is completed, the fresh-keeping mobile rack is moved into the second intermediate cold storage and packaged according to production needs.

[0038] The carcass mobile racks needed for production that day are directly placed into the turntable, rotated 90°, and then placed into the cold storage to await use.

[0039] Carcasses required for 2-7 days of production are bagged six times by a bagging mechanism, filled with preservative gas, and then rotated 90° on a turntable before entering a cold storage room to await use. The temperature of the cold storage room is controlled at... Within the range, humidity is controlled at Within the specified range, it connects to the cold storage via communication and activates the electric field power supply for combined low-temperature and electric field preservation.

[0040] Carcasses required for production exceeding 7 days are bagged six times by a bagging mechanism, filled with preservative gas, and then rotated -90° on a turntable before entering the cold storage for use. The initial temperature of the cold storage is controlled at... Within the range, humidity is controlled at Within the range, the fan speed of the chiller is set to... Within a certain range. It connects to the cold storage via communication and activates the electric field power supply for combined low-temperature and electric field preservation; after a set time, the temperature of the cold storage is controlled at... Within the range, humidity is controlled at Within the range, the fan speed of the chiller is set to... Within the range, and shut down the electric field power supply.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A fresh meat preservation device, comprising several cold storage units and a control terminal, wherein the cold storage units communicate with the control terminal, characterized in that: The cold storage is equipped with a mobile preservation rack, which includes a mobile frame and several electric field humidity preservation covers. Each electric field humidity preservation cover is equipped with an in-cover detection component. A connection and communication component is installed inside the cold storage and is connected to the mobile frame. The electric field humidity preservation covers and the in-cover detection components are electrically connected to the connection and communication component. Both the connection and communication component and the mobile frame communicate with a control terminal.

2. The fresh meat preservation device according to claim 1, characterized in that: The electric field humidity preservation cover includes a fixed tube and two symmetrically arranged electrode plates. One end of the fixed tube is fixedly connected to a movable frame. Both ends of the two symmetrically arranged electrode plates are equipped with fixing rings. The circumferential side of the fixed tube is connected to the upper fixing ring through a connecting plate. The other end of the fixed tube passes through the fixing ring and is equipped with a fixing clamp. Lifting and ventilating components are arranged on both sides of the two electrode plates. The lifting and ventilating components include a breathable cloth and a lifting drive motor. The output shaft of the lifting drive motor is connected to a roller. The roller is installed on the top of the two electrode plates through a bearing seat. The roller is equipped with a rope groove, and a lifting rope is wound in the rope groove. One end of the lifting rope is connected to a gravity block at the bottom of the breathable cloth. The gravity block is slidably arranged in a guide groove on the side of the electrode plate.

3. The fresh meat preservation device according to claim 2, characterized in that: An iris-type sealing component is provided on the fixed ring. The iris-type sealing component includes a mounting ring, a drive gear ring, and a sealing drive motor. Several circumferentially distributed drive columns are provided on the mounting ring. The drive columns are connected to the moving plate. The drive columns are located in the arc-shaped drive through holes on the drive gear ring. The sealing drive motor meshes with the drive gear ring through gears and is installed on the fixed ring. The tops of several movable plates in the iris-type sealing assembly located on the fixing ring above the electrode plate are provided with elastic sealing rings.

4. The fresh meat preservation device according to claim 3, characterized in that: The communication connection component includes two symmetrically arranged telescopic cylinders. The telescopic end of the telescopic cylinder is equipped with a mounting plate. The mounting plate is equipped with an electrical connection plug and two symmetrically arranged positioning columns. The positioning columns are arranged opposite to the positioning holes on the side of the mobile frame.

5. A fresh meat preservation device according to claim 4, characterized in that: The internal detection assembly includes a detection telescopic cylinder. The cylinder body of the detection telescopic cylinder is fixed to the circumference of the fixed tube. The telescopic end of the detection telescopic cylinder is equipped with a distance sensor, an insertion needle, and a telescopic frame. Several temperature sensor probes are provided on the circumference of the insertion needle. At least three pH detectors and pressure sensors are installed on the telescopic frame through contact with the telescopic cylinder. The extension of the telescopic cylinder is determined based on the distance data from the distance sensor, so that the insertion needle is inserted into the body at a set depth, and the temperature sensor probe on the circumference side of the insertion needle performs temperature detection at different depths. After the telescopic frame extends, the contact telescopic cylinder is activated. When the pressure sensor reaches the set value, the pH detector contacts the carcass to perform multi-point pH value detection.

6. The fresh meat preservation device according to claim 5, characterized in that: Several cold storage facilities are arranged in a T-shape. The vertically arranged cold storage facilities are, in order, a pre-cooling cold storage, a first intermediate cold storage, an acid removal cold storage, and a second intermediate cold storage. The two sides of the second intermediate cold storage are connected to a refrigerated cold storage and a frozen cold storage, respectively. The pre-cooling cold storage, acid removal cold storage, refrigerated cold storage and frozen cold storage are all equipped with electric field power supply, refrigeration unit, humidifier, environmental monitoring components and ventilation equipment. The bottom of the pre-cooling cold storage and acid removal cold storage is equipped with a liquid collection tank, and the liquid collection tank is equipped with a liquid level sensor and a drain valve. The first intermediate cold storage is equipped with refrigeration units, humidifiers, environmental monitoring components, and ventilation equipment; The second intermediate cold storage is equipped with a steering turntable, bagging mechanism, air regulating mechanism, refrigeration unit, humidifier, environmental monitoring components, and ventilation equipment.

7. A fresh meat preservation device according to claim 6, characterized in that: The bagging mechanism includes a bag rack installed in the second intermediate cold storage. The bag rack is equipped with a bag supporting assembly, which includes a bag feeding telescopic cylinder. The cylinder body of the bag feeding telescopic cylinder is installed on the bag rack via a transfer telescopic cylinder. The telescopic end of the bag feeding telescopic cylinder is equipped with a bag suction head and a bag supporting telescopic cylinder.

8. A fresh meat preservation device according to claim 7, characterized in that: The gas regulating mechanism includes several gas sources, a mixing chamber, a gas supply pump, and a gas extraction pump. The gas sources include oxygen, carbon dioxide, and nitrogen. Flow valves are installed on the gas supply pipes of the gas sources and the mixing chamber. A stirring fan is installed inside the mixing chamber. The stirring fan is driven by a motor to rotate the output pipe of the mixing chamber, which is connected to the gas supply pump. An outlet valve is installed on the outlet pipe of the gas supply pump, and a extraction valve is installed on the extraction pipe of the gas extraction pump. Both the outlet valve and the extraction valve are located on a sealing cover. The sealing cover is installed on the top of the second intermediate cold storage via a gas regulating lifting cylinder.

9. A fresh meat preservation device according to claim 1, characterized in that: A sealing mechanism is provided on the upper fixed ring. The sealing mechanism includes two symmetrically arranged hot-press sealing plates. The hot-press sealing plates are connected to a pressing telescopic cylinder, which is installed on the fixed ring.

10. A method based on the fresh meat preservation device according to claim 9, characterized in that, The specific steps are as follows: Step S1: After cleaning, the carcass is suspended inside the electric field humidity preservation cover using fixing clips, and the preservation mobile rack is moved to the pre-cooling cold storage for draining and pre-cooling; the preservation mobile rack is connected to the pre-cooling cold storage via communication, and the temperature of the pre-cooling cold storage is controlled at... Within the range, humidity is controlled at Within the range, the fan speed of the chiller is set to... Within the range, the electric field power supply is activated to perform combined low-temperature and electric field preservation; Before the electric field power is turned on at the initial moment and after the electric field power is turned off 2 hours later, the temperature data of multiple points at different depths of the carcass is detected by the detection component inside the cover. The time interval for the next temperature detection is calculated based on the highest temperature in the multi-point temperature data. Based on the time interval, the multi-point temperature data of multiple depths of the carcass is detected again. When the highest temperature in the multi-point temperature data is higher than the set pre-cooling set value, the time interval for the next temperature detection is calculated and the next temperature detection is performed until the highest temperature in the multi-point temperature data drops below 10 degrees Celsius, and the pre-cooling is completed. Step S2: After pre-cooling, the refrigerated mobile rack directly enters the acid removal cold storage via the first intermediate cold storage. The temperature of the first intermediate cold storage is controlled at... Within the range, humidity is controlled at Within the specified range; the temperature of the acid removal cold storage is controlled at... Within the range, humidity is controlled at Within the range, the fan speed of the chiller is set to... Within the range; The mobile preservation rack is connected to the acid removal cold storage via communication and activates the electric field power supply to perform combined low-temperature and electric field preservation. Before the electric field power is turned on at the initial moment and after the electric field power is turned off 6 hours later, the temperature data and pH value at different depths of the carcass are detected by the detection component inside the enclosure. The time interval for re-detection is calculated based on the highest value among the different pH values. Based on the time interval, the temperature data and pH value at different depths of the carcass are detected again. When the highest value among the different pH values ​​is higher than the set pH value, the time interval for re-detection is calculated and the next detection is performed until the highest value among the different pH values ​​drops below the set pH value and the highest value of the multi-point temperature data is lower than the acid discharge set temperature value, at which point the acid discharge is completed. Step S3: After the acid removal is completed, the fresh-keeping mobile rack is moved into the second intermediate cold storage and packaged according to production needs; The carcass preservation mobile racks needed for production that day are directly put into the turntable, rotated 90° and then put into the cold storage to wait for use; Carcasses required for 2-7 days of production are bagged by a bagging mechanism, filled with preservative gas, and then rotated 90° on a turntable before entering a cold storage room to await use. The temperature of the cold storage room is controlled at... Within the range, humidity is controlled at Within the range, it is connected to the cold storage via communication and the electric field power supply is activated to perform combined low temperature and electric field preservation; Carcasses required for production exceeding 7 days are bagged by a bagging mechanism, filled with preservative gas, and then rotated -90° on a turntable before entering the cold storage for use. The initial temperature of the cold storage is controlled at... Within the range, humidity is controlled at Within the range, the fan speed of the chiller is set to... Within a certain range; it connects to the cold storage via communication and activates the electric field power supply for combined low-temperature and electric field preservation; after a set time, the temperature of the cold storage is controlled at... Within the range, humidity is controlled at Within the range, the fan speed of the chiller is set to... Within the range, and shut down the electric field power supply.

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