Nitre-free dried pork slice color development process and low-temperature water control drying device thereof

Abstract

The invention discloses a nitre-free dried pork slice color development process which comprises the following steps: S1, selecting pork hind leg lean meat blocks, slicing the pork hind leg lean meat blocks, then hydrolyzing the pork hind leg lean meat blocks with compound protease, and then mixing and pickling the pork hind leg lean meat blocks; s2, the pickled pork is subjected to vacuum rolling and kneading, and then the pork is put into a low-temperature water-controlled drying device to be dried; s3, smoking the dried pork, cooling, slicing, detecting and packaging the smoked pork to prepare a finished product, and finally performing qualification inspection. The invention further discloses a nitre-free dried pork slice low-temperature water control drying device. According to the technology, the color development effect can be improved, the pork can be turned over while being dried by the device, uniform drying of the pork can be guaranteed, the color development effect is further improved, meanwhile, loading and unloading operation of the pork is more convenient, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of pork jerky processing technology, and in particular to a color-developing process for nitrate-free pork jerky and its low-temperature moisture-controlled drying device. Background Technology

[0002] Pork jerky is a popular snack food among consumers. With the development of my country's economy, people's demands for the quality, safety, flavor, and taste of pork jerky are becoming increasingly diverse. The production process of pork jerky is relatively complex and strict. It uses fresh pork hind leg meat, removing the skin, fat, and tendons, and using the whole piece of pure lean meat as the basic raw material, which is then sliced ​​into thin slices. The pork jerky needs to be dried during the processing.

[0003] However, existing drying equipment usually uses high-temperature drying, which is not conducive to the color development of pork jerky. Furthermore, it is usually inconvenient to turn the pork over during the drying process, which reduces the uniformity and effectiveness of drying. In addition, the loading and unloading of pork is not convenient, which reduces work efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a color-developing process for nitrate-free pork jerky and its low-temperature water-controlled drying device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A color-developing process for nitrate-free pork jerky, comprising the following steps:

[0007] S1: Select lean pork chunks from the hind leg, slice them, then hydrolyze them using a complex protease, and then mix and marinate them.

[0008] S2: Vacuum tumbling is performed on the marinated pork, and then the pork is placed in a low-temperature moisture-controlled drying device for drying;

[0009] S3: The dried pork is smoked, and the smoked pork is then cooled, sliced, tested, and packaged to produce the finished product, which is then inspected for compliance.

[0010] A low-temperature moisture-controlled drying device for nitrate-free pork jerky includes a base plate, a drying chamber fixedly connected to the upper end of the base plate, a cover that mates with the drying chamber, an exhaust mechanism on the top of the cover, an installation frame inside the drying chamber, four installation mechanisms connected to the cover on the installation frame, the four installation mechanisms being arranged in a rectangular pattern, a movable frame inside the installation frame, two movable grooves on the side wall of the movable frame, a snap-fit ​​mechanism connecting to the installation frame inside each of the two movable grooves, two pull rings fixedly connected to the side wall of the movable frame, three placement mechanisms inside the movable frame, an installation cavity inside the movable frame, a linkage mechanism inside the installation cavity, a device groove on the inner wall of the installation frame, a drive mechanism inside the device groove, and three air blowing pipes arranged on the inner wall of the drying chamber, each air blowing pipe housing a low-temperature fan.

[0011] As a further improvement of the present invention, the exhaust mechanism includes an exhaust pipe connected to the upper end of the box cover, and an exhaust fan is installed on the exhaust pipe.

[0012] As a further improvement of the present invention, the mounting mechanism includes a mounting rod that is vertically disposed through the mounting frame, and a fixing nut is threaded onto the mounting rod, the fixing nut being located below the mounting frame.

[0013] As a further improvement of the present invention, the placement mechanism includes a first mesh plate and a second mesh plate, the first mesh plate and the second mesh plate being rotatably connected by a hinge, the second mesh plate being provided with a fixing structure, the fixing structure including a fixing block fixedly connected to the second mesh plate, an insert rod being provided through the fixing block, the insert rod being slidably connected to the fixing block, an insert ring cooperating with the insert rod being fixedly connected to the first mesh plate, a tension spring being fitted on the insert rod, one end of the tension spring being connected to the fixing block, and the other end of the tension spring being connected to the insert rod, a first rotating rod and a second rotating rod being fixedly connected to both ends of the first mesh plate respectively, the first rotating rod being rotatably connected to the inner wall of the movable frame, and the second rotating rod passing through the movable frame and through the mounting cavity.

[0014] As a further improvement of the present invention, the linkage mechanism includes a first transmission wheel fixedly sleeved on the rotating rod located in the middle, and two other rotating rods fixedly sleeved with second transmission wheels, the second transmission wheels and the first transmission wheel being driven by a transmission belt.

[0015] As a further improvement of the present invention, the driving mechanism includes a motor mounted on the inner wall of the device groove, the output shaft of the motor is fixedly connected to a connecting rod, and the end of the rotating rod located in the middle is provided with a connecting groove that cooperates with the connecting rod.

[0016] As a further improvement of the present invention, the locking mechanism includes a locking block disposed in the movable groove, and a locking hole that cooperates with the locking block is provided on the inner side wall of the mounting frame. The locking block penetrates the inner wall of the movable groove and extends into the interior of the locking hole. A spring is provided inside the movable groove, one end of the spring is connected to the inner wall of the movable groove, and the other end of the spring is connected to the locking block.

[0017] As a further improvement of the present invention, two electric telescopic rods are installed on the upper end of the base plate. The two electric telescopic rods are symmetrically arranged on the left and right sides of the drying oven, and the telescopic ends of the two electric telescopic rods are fixedly connected to the lower end of the oven cover.

[0018] The beneficial effects of this invention are:

[0019] By setting up a movable frame, a mounting frame, and a snap-fit ​​mechanism, the movable frame can move inside the mounting frame, making it easy to remove the movable frame and place the pork to be dried on the placement mechanism. The snap-fit ​​mechanism can fix the movable frame to the mounting frame, ensuring the stability of the movable frame.

[0020] By setting up a placement mechanism and a driving mechanism, the connecting rod is driven to rotate by a motor, which in turn drives the second rotating rod to rotate, which in turn drives the first screen plate to rotate. This allows the pork between the first and second screen plates to rotate simultaneously, thus turning the pork over while it is drying. This ensures that the pork dries evenly and improves the color development effect.

[0021] By setting up a linkage mechanism, the three placement mechanisms can be linked together, enabling them to rotate synchronously without the need for excessive driving components, thus simplifying the structure.

[0022] By setting up an exhaust mechanism and starting the exhaust fan, the moisture generated inside the drying chamber during the drying process can be discharged in a timely manner, preventing moisture from accumulating inside the drying chamber and adversely affecting the drying of pork.

[0023] This invention allows for the turning of pork during the drying process, ensuring uniform drying and improving color development. It also makes loading and unloading the pork more convenient and improves work efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a low-temperature moisture-controlled drying device for nitrate-free pork jerky proposed in this invention;

[0025] Figure 2 This is a top view of the mounting frame, movable frame, and placement mechanism of a low-temperature moisture-controlled drying device for nitrate-free pork jerky proposed in this invention.

[0026] Figure 3 This is a schematic diagram of the connection structure of the mounting frame, movable frame, linkage mechanism, and drive mechanism of a low-temperature moisture-controlled drying device for nitrate-free pork jerky proposed in this invention.

[0027] Figure 4 This is a schematic diagram of the connecting rod, the second rotating rod, and the connecting groove of a low-temperature moisture-controlled drying device for nitrate-free pork jerky proposed in this invention.

[0028] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0029] Figure 6 for Figure 2 Enlarged view of section B in the middle.

[0030] In the diagram: 1. Base plate, 2. Electric telescopic rod, 3. Box cover, 4. Exhaust fan, 5. Exhaust duct, 6. Drying box, 7. Mounting rod, 8. Mounting frame, 9. Fixing nut, 10. Movable frame, 11. Low temperature fan, 12. Air duct, 13. Locking block, 14. Spring, 15. Movable groove, 16. Pull ring, 17. First rotating rod, 18. First mesh plate, 19. Second mesh plate, 20. Hinge, 21. Fixing block, 22. Insert rod, 23. Tension spring, 24. Insert ring, 25. Mounting cavity, 26. Second rotating rod, 27. First transmission wheel, 28. Transmission belt, 29. Second transmission wheel, 30. Device groove, 31. Motor, 32. Connecting rod, 33. Connecting groove. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] A color-developing process for nitrate-free pork jerky, comprising the following steps:

[0033] S1: Select lean pork chunks from the hind leg, slice them, then hydrolyze them using a complex protease, and then mix and marinate them.

[0034] S2: Vacuum tumbling is performed on the marinated pork, and then the pork is placed in a low-temperature moisture-controlled drying device for drying;

[0035] S3: The dried pork is smoked, and the smoked pork is then cooled, sliced, tested, and packaged to produce the finished product, which is then inspected for compliance.

[0036] Reference Figures 1-6A low-temperature moisture-controlled drying device for nitrate-free pork jerky includes a base plate 1. A drying chamber 6 is fixedly connected to the upper end of the base plate 1. A cover 3 that cooperates with the drying chamber 6 is provided on the upper part of the drying chamber 6. Two electric telescopic rods 2 are installed on the upper end of the base plate 1. The two electric telescopic rods 2 are symmetrically arranged on the left and right sides of the drying chamber 6. The telescopic ends of the two electric telescopic rods 2 are fixedly connected to the lower end of the cover 3. The cover 3 can be easily opened and closed by telescopically extending and retracting the electric telescopic rods 2. An exhaust mechanism is provided on the top of the cover 3. The exhaust mechanism includes an exhaust pipe 5 connected to the upper end of the cover 3. An exhaust fan 4 is installed on the exhaust pipe 5.

[0037] The drying oven 6 has an internal mounting frame 8 with four mounting mechanisms connected to the oven cover 3. These mechanisms are arranged in a rectangular pattern. Each mounting mechanism includes a vertically extending mounting rod 7 that passes through the mounting frame 8. A fixing nut 9 is threaded onto the mounting rod 7 and located below the mounting frame 8. The fixing nut 9 secures the mounting frame 8, allowing for easy disassembly and installation, and facilitating its removal for cleaning. The inner side of the mounting frame 8 has a movable frame 10 with two movable grooves 15 on its side wall. Each of the two movable grooves 15 contains... A snap-fit ​​mechanism is provided to connect with the mounting frame 8. The snap-fit ​​mechanism includes a snap block 13 disposed in the movable groove 15. The inner side wall of the mounting frame 8 is provided with a snap hole that cooperates with the snap block 13. The snap block 13 passes through the inner wall of the movable groove 15 and extends into the inside of the snap hole. A spring 14 is provided inside the movable groove 15. One end of the spring 14 is connected to the inner wall of the movable groove 15, and the other end of the spring 14 is connected to the snap block 13. When the snap block 13 is snapped into the snap hole, it can fix the movable frame 10 to the mounting frame 8. Two pull rings 16 are fixedly connected to the side wall of the movable frame 10. Three placement mechanisms are provided on the inner side of the movable frame 10.

[0038] The mounting frame 8 is moved upward by the mounting rod 7. The operator moves the locking block 13 out of the locking hole by moving the locking block 13, and then pulls the movable frame 10 outward by the pull ring 16, which facilitates the loading and unloading of materials on the movable frame 10. The movable frame 10 has a mounting cavity 25 inside, and a linkage mechanism is provided inside the mounting cavity 25. The linkage mechanism includes a first transmission wheel 27 fixedly sleeved on the second rotating rod 26 located in the middle, and two second transmission wheels 29 fixedly sleeved on the other two second rotating rods 26. The second transmission wheels 29 and the first transmission wheels 27 are driven by a transmission belt 28. The drive mechanism includes a motor 31 installed on the inner wall of the device groove 30. The output shaft of the motor 31 is fixedly connected to a connecting rod 32. The end of the second rotating rod 26 located in the middle has a connecting groove 33 that cooperates with the connecting rod 32. The connecting rod 32 is a rectangular rod, and the end of the connecting rod 32 away from the motor 31 is pointed. The connecting groove 33 is a rectangular groove. The inner wall of the mounting frame 8 has a device groove 30, and the device groove 30 has a drive mechanism inside.

[0039] Three air blowing pipes 12 are arranged on the inner wall of the drying oven 6. A low-temperature fan 11 is installed inside the air blowing pipe 12. The low-temperature fan 11 blows air into the air blowing pipe 12 and heats the interior of the drying oven 6 at low temperature through the air blowing pipe 12.

[0040] In this invention, the placement mechanism includes a first mesh plate 18 and a second mesh plate 19. The first mesh plate 18 and the second mesh plate 19 are rotatably connected by a hinge 20. The second mesh plate 19 is provided with a fixing structure, which includes a fixing block 21 fixedly connected to the second mesh plate 19. A rod 22 is provided through the fixing block 21 and is slidably connected to the fixing block 21. A ring 24 that cooperates with the rod 22 is fixedly connected to the first mesh plate 18. A tension spring 23 is fitted on the rod 22. One end of the tension spring 23 is connected to the fixing block 21, and the other end of the tension spring 23 is connected to the rod 22. A first rotating rod 17 and a second rotating rod 26 are fixedly connected to the two ends of the first mesh plate 18, respectively. The first rotating rod 17 is rotatably connected to the inner wall of the movable frame 10, and the second rotating rod 26 passes through the movable frame 10 and through the mounting cavity 25.

[0041] When using this invention, the electric telescopic rod 2 is activated to extend and lift the box cover 3. The mounting rod 7 drives the mounting frame 8 to move upward together. The operator moves the locking block 13 out of the locking hole by moving the locking block 13, and then pulls the movable frame 10 outward by pulling the pull ring 16.

[0042] Then pull the insert rod 22 to move the insert rod 22 out of the insert ring 24, then rotate the second mesh plate 19 to open, place the pork to be dried on the first mesh plate 18, then rotate the second mesh plate 19 back to close, and then reinsert the insert rod 22 into the insert ring 24 to fix the second mesh plate 19 and the first mesh plate 18. Then push the movable frame 10 back to the inside of the mounting frame 8 and fix it.

[0043] When the electric telescopic rod 2 is activated and retracted, the lid 3 moves down, and the mounting frame 8 moves into the drying chamber 6 via the mounting rod 7. The low-temperature fan 11 is activated, which generates a low-temperature airflow through the air pipe 12 to blow on the pork and quickly remove moisture. The exhaust fan 4 is activated to promptly discharge the water vapor generated inside the drying chamber 6 during the drying process. The motor 31 is activated, which drives the connecting rod 32 to rotate. The connecting rod 32 drives the second rotating rod 26 located in the middle to rotate. Through the linkage of the first transmission wheel 27, the transmission belt 28, and the second transmission wheel 29, the other two second rotating rods 26 can be driven to rotate simultaneously. The second rotating rods 26 drive the pork between the first mesh plate 18 and the second mesh plate 19 to rotate, thereby turning the pork over while it is drying.

[0044] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A color-developing process for nitrate-free pork jerky, characterized in that, The process includes the following steps: S1: Select lean pork chunks from the hind leg, slice the lean pork chunks, then hydrolyze them using a complex protease, and then mix and marinate them. S2: Vacuum tumbling of the marinated pork, followed by drying in a low-temperature moisture-controlled drying device; S3: The dried pork is smoked, and the smoked pork is then cooled, sliced, tested, and packaged to produce the finished product, which is then inspected for compliance.

2. A low-temperature water-controlled drying apparatus for the color-developing process of nitrate-free pork jerky as described in claim 1, characterized in that, Includes a base plate (1), the upper end of which is fixedly connected to a drying chamber (6). A cover (3) is provided above the drying chamber (6) to cooperate with it. An exhaust mechanism is provided on the top of the cover (3). An installation frame (8) is provided inside the drying chamber (6). Four installation mechanisms connected to the cover (3) are provided on the installation frame (8). These four installation mechanisms are arranged in a rectangular pattern. A movable frame (10) is provided inside the installation frame (8). Two movable slots (15) are provided on the sidewall of the movable frame (10). The interior of the two movable slots (15)... Each is equipped with a snap-fit ​​mechanism connected to the mounting frame (8). Two pull rings (16) are fixedly connected to the side wall of the movable frame (10). Three placement mechanisms are provided on the inner side of the movable frame (10). An installation cavity (25) is provided inside the movable frame (10). A linkage mechanism is provided inside the installation cavity (25). A device groove (30) is provided on the inner wall of the mounting frame (8). A drive mechanism is provided inside the device groove (30). Three air pipes (12) are arranged on the inner wall of the drying oven (6). A low-temperature fan (11) is installed inside the air pipes (12).

3. The low-temperature moisture-controlled drying device for nitrate-free pork jerky according to claim 2, characterized in that, The exhaust mechanism includes an exhaust pipe (5) connected to the upper end of the cover (3), and an exhaust fan (4) is installed on the exhaust pipe (5).

4. The low-temperature moisture-controlled drying device for nitrate-free pork jerky according to claim 2, characterized in that, The installation mechanism includes a vertically extending installation rod (7) on the installation frame (8), and a fixing nut (9) is threaded onto the installation rod (7), with the fixing nut (9) located below the installation frame (8).

5. The low-temperature moisture-controlled drying device for nitrate-free pork jerky according to claim 2, characterized in that, The placement mechanism includes a first mesh plate (18) and a second mesh plate (19). The first mesh plate (18) and the second mesh plate (19) are rotatably connected by a hinge (20). The second mesh plate (19) is provided with a fixing structure, which includes a fixing block (21) fixedly connected to the second mesh plate (19). A rod (22) is provided through the fixing block (21). The rod (22) is slidably connected to the fixing block (21). The first mesh plate (18) is fixedly connected to the rod (22). The first mesh plate (18) is fitted with a plug ring (24), and a tension spring (23) is fitted on the plug rod (22). One end of the tension spring (23) is connected to the fixed block (21), and the other end of the tension spring (23) is connected to the plug rod (22). The two ends of the first mesh plate (18) are respectively fixedly connected to a first rotating rod (17) and a second rotating rod (26). The first rotating rod (17) is rotatably connected to the inner wall of the movable frame (10), and the second rotating rod (26) passes through the movable frame (10) and through the mounting cavity (25).

6. The low-temperature moisture-controlled drying device for nitrate-free pork jerky according to claim 5, characterized in that, The linkage mechanism includes a first transmission wheel (27) fixedly sleeved on the second rotating rod (26) located in the middle, and two other second rotating rods (26) fixedly sleeved with second transmission wheels (29). The second transmission wheels (29) and the first transmission wheels (27) are driven by a transmission belt (28).

7. The low-temperature moisture-controlled drying device for nitrate-free pork jerky according to claim 6, characterized in that, The drive mechanism includes a motor (31) installed on the inner wall of the device slot (30). The output shaft of the motor (31) is fixedly connected to a connecting rod (32). The end of the second rotating rod (26) located in the middle is provided with a connecting groove (33) that cooperates with the connecting rod (32).

8. The low-temperature moisture-controlled drying device for nitrate-free pork jerky according to claim 2, characterized in that, The locking mechanism includes a locking block (13) disposed in the movable groove (15). The inner side wall of the mounting frame (8) is provided with a locking hole that cooperates with the locking block (13). The locking block (13) penetrates the inner wall of the movable groove (15) and extends into the inside of the locking hole. A spring (14) is disposed inside the movable groove (15). One end of the spring (14) is connected to the inner wall of the movable groove (15), and the other end of the spring (14) is connected to the locking block (13).

9. A low-temperature moisture-controlled drying device for nitrate-free pork jerky according to claim 2, characterized in that, Two electric telescopic rods (2) are installed on the upper end of the base plate (1). The two electric telescopic rods (2) are symmetrically arranged on the left and right sides of the drying box (6). The telescopic ends of the two electric telescopic rods (2) are fixedly connected to the lower end of the box cover (3).

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