Vacuum freeze-drying equipment for flavored marinated products

Abstract

The vacuum freeze-drying equipment comprises a mounting bottom plate, a drying bin, a movable bin door, a fixed mounting ring, a rotary mounting ring and a placement basket, and a transmission mechanism composed of a second servo motor, a worm and gear, a driving gear and a toothed plate is arranged to drive the movable bin door to be automatically opened and closed along a movable sliding way; a rotary hanging basket system driven by a first servo motor is integrated on a movable bin door, a containing basket hung on a hook continuously rotates in the drying process, it is guaranteed that materials are heated and sublimated evenly in combination with a plurality of sets of electric heating pipes evenly distributed on a third installation base, and meanwhile the drying effect is improved. The equipment integrates a refrigeration mechanism main body, a cold trap coil pipe, a vacuum pump, a water receiving tank and a water discharging pipe, so that the whole-process integrated automatic operation of pre-freezing, vacuumizing, heating sublimation, water catching and drying and automatic ice melting and water discharging is realized, and the freeze-drying efficiency, uniformity and finished product quality of marinated products and the reliability of continuous operation of the equipment are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of braised food processing technology, and in particular to a vacuum freeze-drying device for flavored braised products. Background Technology

[0002] For flavored braised products, the application of vacuum freeze-drying technology has groundbreaking value. This technology can lock in and preserve the complex and unique flavor system and sensory quality of braised products in a near-perfect state. The low-temperature and oxygen-free environment greatly inhibits the loss of volatile flavor substances and the oxidation of fats, so that the characteristic aroma, delicious taste and attractive color of braised products can be preserved almost completely. After rehydration, its flavor and taste can be highly restored to the state of the initial braising stage.

[0003] Despite the significant advantages of vacuum freeze-drying technology, conventional freeze-drying equipment currently used in the production of braised products still has obvious shortcomings in terms of structure and process integration, which restricts the full realization of its advantages and industrialization efficiency. Most equipment adopts a fixed silo door and static tray design, and the entire process of loading, pushing, and unloading materials relies on high-intensity manual operation. This not only results in low labor efficiency and safety risks such as frostbite, but also causes inconsistencies in the loading amount and the density of material placement due to human factors, which directly affects the drying uniformity and quality stability between batches. Furthermore, since the material is in a static state in the drying chamber, the inherent non-uniformity of the temperature field and airflow field on the water trap surface and the radiant surface of the heating plate leads to differences in freezing rate, heating intensity, and sublimation efficiency at different locations of the same batch of material. This can easily cause local high moisture content, incomplete drying, or local overheating and charring of the product, affecting the overall yield and quality. Therefore, those skilled in the art have proposed a vacuum freeze-drying equipment for flavored braised products. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a vacuum freeze-drying device for flavored marinated products.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a vacuum freeze-drying device for flavored marinated products, comprising a mounting base plate, a drying chamber, a movable chamber door, a fixed mounting ring, a rotating mounting ring, and a placement basket. The drying chamber is fixedly welded to one side of the top surface of the mounting base plate. A movable slide rail is symmetrically provided on one side of the top surface of the mounting base plate. Movable rollers are symmetrically fixedly installed on the bottom surface of the movable chamber door, and the movable rollers are located within the movable slide rails. A fixed mounting ring is welded to one side of the movable chamber door, and a rotating groove is provided on the inner wall of the fixed mounting ring. A rotating mounting ring is fixedly installed on the side wall of the rotating mounting ring. The device is equipped with a rotating slip ring, which is movably embedded in a rotating groove. Several rotating shaft seats are evenly fixedly installed on the side wall of the rotating mounting ring, and a basket hanging shaft is installed in the rotating shaft seat. Several sets of hooks are symmetrically welded on the basket hanging shaft. A handle is symmetrically welded to the top surface of the basket, and a hanging rope is attached to the handle. A first servo motor is bolted to the side wall of the movable compartment door, and a power shaft is keyed to the output end of the first servo motor. A drive gear is fixedly installed on the power shaft. A driven gear ring is welded to the side wall of the rotating mounting ring, and the driven gear ring meshes with the drive gear.

[0006] As a further description of the above technical solution: A bearing frame is welded to the top surface of the drying chamber, and a drive shaft is mounted on the bearing frame. Drive gears are symmetrically fixedly mounted on the drive shaft. A drive plate is welded to the top of the movable chamber door, and toothed plates are symmetrically welded to the top surface of the drive plate, meshing with the drive gears. A drive box is fixedly mounted on the side wall of the bearing frame, and a worm gear is installed inside the drive box. A second servo motor is bolted to the side wall of the drive box, and the output end of the second servo motor is keyed to one end of the worm gear. A worm wheel is fixedly mounted at one end of the drive shaft located inside the drive box, and the worm wheel engages with the worm gear.

[0007] As a further description of the above technical solution: The drying chamber is equipped with a cold trap coil. A first mounting base is fixedly installed on one side of the mounting base plate, and a refrigeration mechanism body is bolted to the first mounting base. The refrigeration mechanism body can be connected and used in conjunction with the cold trap coil.

[0008] As a further description of the above technical solution: A second mounting base is welded to the outer wall of the movable compartment door, and a vacuum pump is bolted to the second mounting base. The output end of the vacuum pump is connected to a vacuum tube, which passes through the movable compartment door.

[0009] As a further description of the above technical solution: A third mounting base is fixedly installed in the center of the inner wall of the movable compartment door, and several sets of electric heating tubes are evenly installed on the four sides of the third mounting base.

[0010] As a further description of the above technical solution: A water collection trough is fixedly installed on the bottom surface of the drying chamber, and a drain pipe that penetrates the side wall of the drying chamber is connected to the bottom of the inner cavity of the water collection trough. A sealing water valve is installed on the drain pipe.

[0011] As a further description of the above technical solution: The control panel is fixedly installed on the side wall of the drying chamber, and the control panel is electrically connected to the first servo motor, the second servo motor, the main body of the refrigeration mechanism, the vacuum pump, the electric heating tube and the sealing water valve.

[0012] As a further description of the above technical solution: The four corners of the side wall of the drying chamber are welded with first connecting blocks, and guide sleeves are fixedly installed on the first connecting blocks. The two sides of the movable chamber door are symmetrically welded with second connecting blocks, and guide rods are welded on the second connecting blocks, and the guide rods are sleeved in the guide sleeves.

[0013] As a further description of the above technical solution: A sealing groove is provided on one side of the opening of the drying chamber, and a rubber sealing ring is fixedly installed on the inner wall of the movable chamber door.

[0014] As a further description of the above technical solution: The central axes of the fixed mounting ring, the rotating mounting ring, the rotating slide groove, and the rotating slip ring are on the same straight line.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses a servo motor, gear rack and slide rail mechanism to drive the automatic opening and closing of the mobile chamber door, realizing the automated loading and unloading of flavored braised products, replacing manual handling. When the mobile chamber door is closed, the rubber sealing ring and the sealing groove are tightly fitted, which can ensure that the drying chamber reaches and maintains a high vacuum during operation, creating the core process conditions for freeze drying, and greatly improving work efficiency and ease of operation.

[0016] 2. This invention is equipped with a fixed mounting ring, a rotating mounting ring, a hanging basket shaft, and a placement basket. A rotating hanging basket system driven by a first servo motor is integrated on the movable compartment door. During operation, the placement basket for placing the brine products can rotate slowly and continuously. Combined with the evenly distributed electric heating tubes on the third mounting base, it ensures that the material is heated and sublimated evenly, effectively improving the quality of the freeze-dried product. By integrating core processes such as pre-freezing, vacuuming, heating and sublimation, and water-removing drying into a closed system, the process is automatically completed, making the process compact and efficient.

[0017] 3. This invention simplifies the equipment maintenance process. After drying, the cold trap coil can be directly heated and defrosted by the electric heating tube in the start-up chamber. The melted ice water is discharged in a centralized manner through a specially designed water receiving tank and drain pipe, eliminating the need for manual ice breaking or complicated cleaning. This design ensures that the cold trap can quickly return to a clean and dry state, preparing it for the next freeze-drying cycle and ensuring the continuity and reliability of equipment operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a vacuum freeze-drying device for flavored marinated products proposed in this invention; Figure 2 This is a side view of a vacuum freeze-drying device for flavored braised products proposed in this invention; Figure 3 This is a schematic diagram of the drying chamber structure proposed in this invention; Figure 4 This is a schematic diagram of the movable door structure proposed in this invention; Figure 5 This is a perspective view of the fixing ring proposed in this invention; Figure 6 This is a perspective view of the rotating mounting ring proposed in this invention; Figure 7 This is a schematic diagram of the bearing bracket and drive plate structure proposed in this invention; Figure 8 This is a schematic diagram of the internal structure of the drive box proposed in this invention; Figure 9 This is a three-dimensional view of the basket placement proposed in this invention.

[0020] Legend: 1. Mounting base plate; 2. Drying chamber; 3. Movable chamber door; 4. First servo motor; 5. Basket hanging shaft; 6. Placement basket; 7. Guide slide rod; 8. First connecting block; 9. Control panel; 10. Drain pipe; 11. First mounting base; 12. Refrigeration mechanism body; 13. Second mounting base; 14. Vacuum pump; 15. Sealing water valve; 16. Bearing bracket; 17. Guide sleeve; 18. Drive plate; 19. Toothed plate; 20. Third mounting base; 21. Electric heating element; 22. Vacuum extraction tube; 23. Second connecting block 24. Drive box; 25. Second servo motor; 26. Drive shaft; 27. Drive gear; 28. Cold trap coil; 29. ​​Sealing groove; 30. Water receiving groove; 31. Moving slide; 32. Moving roller; 33. Power shaft; 34. Drive gear; 35. Rubber sealing ring; 36. Fixed mounting ring; 37. Rotating mounting ring; 38. Driven gear ring; 39. Hook; 40. Rotating slide; 41. Rotating slip ring; 42. Rotating shaft seat; 43. Worm; 44. Worm wheel; 45. Handle; 46. Hanging rope. Detailed Implementation

[0021] 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.

[0022] In the description of the invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are 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, and therefore should not be construed as a limitation of the invention; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. For those skilled in the art, the specific meaning of the above terms in the invention can be understood according to the specific circumstances: Please refer to Figures 1 to 9 As shown, A vacuum freeze-drying device for flavored marinated products includes a mounting base plate 1, a drying chamber 2, a movable chamber door 3, a fixed mounting ring 36, a rotating mounting ring 37, and a placement basket 6. The drying chamber 2 is fixedly welded to one side of the top surface of the mounting base plate 1. A movable slide rail 31 is symmetrically provided on one side of the top surface of the mounting base plate 1. Movable rollers 32 are symmetrically fixedly installed on the bottom surface of the movable chamber door 3, and the movable rollers 32 are located within the movable slide rails 31. A fixed mounting ring 36 is welded to one side of the movable chamber door 3, and a rotating groove 40 is provided on the inner wall of the fixed mounting ring 36. A rotating sliding ring 41 is fixedly installed on the side wall of the rotating mounting ring 37, and the rotating sliding ring 41 is movable. The rotating mounting ring 37 is fitted into the rotating slide 40. Several rotating shaft seats 42 are evenly fixedly installed on the side wall of the rotating mounting ring 37. The basket shaft 5 is installed in the rotating shaft seat 42. Several sets of hooks 39 are symmetrically welded on the basket shaft 5. The top surface of the basket 6 is symmetrically welded with a handle 45. A hanging rope 46 is attached to the handle 45. The first servo motor 4 is bolted to the side wall of the movable door 3. The output end of the first servo motor 4 is keyed to the power shaft 33. The drive gear 34 is fixedly installed on the power shaft 33. The driven gear ring 38 is welded to the side wall of the rotating mounting ring 37. The driven gear ring 38 meshes with the drive gear 34.

[0023] Through the coordinated design of the movable door 3, fixed mounting ring 36, rotating mounting ring 37, hanging basket shaft 5, and placement basket 6, efficient and automated processing of flavored braised products is achieved. The movable door 3 moves on the movable slide 31 of the mounting base plate 1 via the movable roller 32 at the bottom, realizing the automatic opening, closing, and sealing of the drying chamber 2. The rotating mounting ring 37 rotates through the cooperation of the rotating sliding ring 41 on its side wall and the rotating sliding groove 40 on the inner wall of the fixed mounting ring 36. The first servo motor 4 drives the active gear 34 to drive the driven gear ring 38 to rotate. The hanging basket shaft 5 is installed on the rotating shaft seat 42 of the rotating mounting ring 37, and its hook 39 suspends the placement basket 6 through the hanging rope 46. This structure allows the braised products to rotate evenly with the rotating mounting ring 37 during the drying process. Combined with automated feeding and unloading, it significantly improves the uniformity, efficiency, and ease of operation of freeze drying.

[0024] Please refer to Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, a bearing frame 16 is welded to the top surface of the drying chamber 2, and a drive shaft 26 is mounted on the bearing frame 16. A drive gear 27 is symmetrically fixedly mounted on the drive shaft 26. A drive plate 18 is welded to the top of the movable chamber door 3, and a toothed plate 19 is symmetrically welded to the top surface of the drive plate 18. The toothed plate 19 meshes with the drive gear 27. A drive box 24 is fixedly mounted on the side wall of the bearing frame 16, and a worm gear 43 is installed inside the drive box 24. A second servo motor 25 is bolted to the side wall of the drive box 24, and the output end of the second servo motor 25 is keyed to one end of the worm gear 43. A worm wheel 44 is fixedly mounted on one end of the drive shaft 26 located in the inner cavity of the drive box 24, and the worm wheel 44 cooperates with the worm gear 43.

[0025] The second servo motor 25 drives the worm gear 43 to drive the worm wheel 44, causing the drive gear 27 on the drive shaft 26 to rotate, thereby precisely meshing with the toothed plate 19 on the drive plate 18, realizing the automated, smooth and highly sealed linear opening and closing motion of the movable door 3.

[0026] Please refer to Figure 1 and Figure 2 As shown, a cold trap coil 28 is installed inside the drying chamber 2. A first mounting base 11 is fixedly installed on one side of the mounting base plate 1, and a refrigeration mechanism body 12 is bolted on the first mounting base 11. The refrigeration mechanism body 12 can be connected and used in conjunction with the cold trap coil 28.

[0027] By independently installing the main body 12 of the refrigeration mechanism on the first mounting base 11 and connecting it to the cold trap coil 28 in the inner cavity of the drying chamber 2, a modular layout of the refrigeration system is achieved, which facilitates assembly, maintenance and heat dissipation, while ensuring that the cold trap coil 28 provides the core function of low-temperature water capture efficiently and stably.

[0028] Please refer to Figure 1 , Figure 2 and Figure 3 As shown, a second mounting base 13 is welded to the outer wall of the movable door 3, and a vacuum pump 14 is bolted to the second mounting base 13. The output end of the vacuum pump 14 is connected to a vacuum tube 22, which passes through the movable door 3.

[0029] By directly integrating the vacuum pump 14 onto the second mounting base 13 of the movable chamber door 3 and connecting the inner cavity of the drying chamber 2 via the through vacuum tube 22, a compact integrated design of the vacuum system and the chamber door is achieved, which significantly reduces the length of the vacuum pipeline and the risk of leakage, and improves the pumping efficiency and system reliability.

[0030] Please refer to Figure 1 and Figure 4 As shown, a third mounting base 20 is fixedly installed in the center of the inner wall of the movable door 3, and several sets of electric heating tubes 21 are evenly installed on the four sides of the third mounting base 20.

[0031] By arranging electric heating tubes 21 evenly in multiple directions on the third mounting base 20 on the inner wall of the movable chamber door 3, three-dimensional, uniform and stable heat radiation to the interior space of the drying chamber 2 is achieved, ensuring the consistency of material heating and providing a precise and controllable heat source for the core sublimation process.

[0032] Please refer to Figure 1 and Figure 2 As shown, a water receiving trough 30 is fixedly installed on the bottom surface of the drying chamber 2, and a drain pipe 10 that penetrates the side wall of the drying chamber 2 is connected to the bottom of the inner cavity of the water receiving trough 30, and a sealing water valve 15 is installed on the drain pipe 10.

[0033] By combining the water receiving trough 30, drain pipe 10 and sealing water valve 15 fixed to the bottom of the drying chamber 2, the automatic collection, sealed storage and controllable discharge of defrosting water are realized, simplifying the equipment maintenance process and effectively ensuring the continuous drying and cleanliness of the working surface of the cold trap coil 28.

[0034] Please refer to Figure 1 , Figure 2 and Figure 3 As shown, a control panel 9 is fixedly installed on the side wall of the drying chamber 2, and the control panel 9 is electrically connected to the first servo motor 4, the second servo motor 25, the main body of the refrigeration mechanism 12, the vacuum pump 14, the electric heating tube 21 and the sealing water valve 15.

[0035] The control circuit of control panel 9 can be implemented by simple programming by those skilled in the art. It is common knowledge in the field. It is only used and not modified. Therefore, the control method and circuit connection will not be described in detail. Control panel 9 is connected to an external power supply through wires for convenient power supply.

[0036] Please refer to Figure 1 and Figure 2 As shown, the four corners of the side wall of the drying chamber 2 are welded with first connecting blocks 8, and guide sleeves 17 are fixedly installed on the first connecting blocks 8. The two sides of the movable chamber door 3 are symmetrically welded with second connecting blocks 23, and guide rods 7 are welded on the second connecting blocks 23. The guide rods 7 are sleeved in the guide sleeves 17.

[0037] The precise engagement of the guide sleeve 17 on the first connecting block 8 and the guide rod 7 on the second connecting block 23 provides high-precision, low-friction vertical guidance and rigid support for the linear movement of the movable door 3, ensuring the stability, sealing accuracy and long-term operational reliability of the door during frequent opening and closing.

[0038] Please refer to Figure 3 and Figure 4 As shown, a sealing groove 29 is provided on one side of the opening of the drying chamber 2, and a rubber sealing ring 35 is fixedly installed on the inner wall of the movable chamber door 3.

[0039] By tightly fitting the sealing groove 29 on the opening side of the drying chamber 2 with the rubber sealing ring 35 on the inner wall of the movable chamber door 3, the drying chamber 2 achieves reliable static sealing in a high vacuum working environment, effectively isolating external air and moisture, and providing the necessary airtightness guarantee for the core process.

[0040] Please refer to Figure 4 As shown, the central axes of the fixed mounting ring 36, the rotating mounting ring 37, the rotating slide groove 40, and the rotating slide ring 41 are on the same straight line.

[0041] Working Principle: This invention comprises a mounting base plate 1, a drying chamber 2, and a movable door 3. The drying chamber 2 is fixedly welded to one side of the top surface of the mounting base plate 1, and a cold trap coil 28 is installed inside the drying chamber 2. A first mounting seat 11 is fixedly mounted to one side of the mounting base plate 1, and a refrigeration mechanism body 12 is bolted to the first mounting seat 11. The refrigeration mechanism body 12 can be connected and used in conjunction with the cold trap coil 28. A movable slide rail 31 is symmetrically provided on one side of the top surface of the mounting base plate 1, and movable rollers 32 are symmetrically fixedly mounted on the bottom surface of the movable door 3, with the rollers 32 located within the movable slide rail 31. First connecting blocks 8 are welded to the four corners of the side wall of the drying chamber 2, and guide sleeves 17 are fixedly mounted on the first connecting blocks 8. A second connecting block 8 is symmetrically welded to both sides of the movable door 3. Two connecting blocks 23 are provided, and a guide slide rod 7 is welded to the second connecting block 23. The guide slide rod 7 is sleeved inside the guide slide sleeve 17. A bearing bracket 16 is welded to the top surface of the drying chamber 2, and a drive shaft 26 is installed on the bearing bracket 16. A drive gear 27 is symmetrically fixedly installed on the drive shaft 26. A drive plate 18 is welded to the top of the movable chamber door 3, and a toothed plate 19 is symmetrically welded to the top surface of the drive plate 18. The toothed plate 19 meshes with the drive gear 27. A drive box 24 is fixedly installed on the side wall of the bearing bracket 16, and a worm gear 43 is installed inside the drive box 24. A second servo motor 25 is bolted to the side wall of the drive box 24, and the output end of the second servo motor 25 is keyed to one end of the worm gear 43. The drive shaft 26 is fixedly installed at one end inside the drive box 24. The device includes a worm gear 44 that engages with a worm 43. When the second servo motor 25 is activated via the control panel 9 to rotate the worm 43, the drive shaft 26 rotates. The drive shaft 26 then rotates the drive gear 27, causing the drive plate 18 to pull the movable chamber door 3 along the guide slide rod 7. A sealing groove 29 is provided on the drying chamber 2, and a rubber sealing ring 35 is fixedly installed on the side wall of the movable chamber door 3. When the movable chamber door 3 aligns with the drying chamber 2, the rubber sealing ring 35 is engaged in the sealing groove 29, thus sealing the drying chamber 2. This also enables automatic feeding of flavored braised products for subsequent vacuum freeze-drying, eliminating the need for manual loading and unloading by workers, making it more convenient and efficient. High efficiency and practicality are achieved through the following features: a fixed mounting ring 36, a rotating mounting ring 37, a hanging basket shaft 5, and a placement basket 6. A fixed mounting ring 36 is welded to one side of the movable door 3, and a rotating groove 40 is formed on the inner wall of the fixed mounting ring 36. A rotating sliding ring 41 is fixedly mounted on the side wall of the rotating mounting ring 37, and the rotating sliding ring 41 is movably engaged within the rotating groove 40. Several rotating shaft seats 42 are evenly fixedly mounted on the side wall of the rotating mounting ring 37, and the hanging basket shaft 5 is installed within each rotating shaft seat 42. Several sets of hooks 39 are symmetrically welded onto the hanging basket shaft 5. A handle 45 is symmetrically welded to the top surface of the placement basket 6, and a hanging rope 46 is attached to the handle 45. During use, the user can place the braised products to be processed into the placement basket 6.Then, the hanging rope 46 is hung on the hook 39. The first servo motor 4 is fixedly installed on the side wall of the movable compartment door 3 with bolts, and the output end of the first servo motor 4 is keyed to the power shaft 33. The drive gear 34 is fixedly installed on the power shaft 33. The driven gear ring 38 is welded to the side wall of the rotating mounting ring 37, and the driven gear ring 38 meshes with the drive gear 34. Therefore, when the worker hangs the basket 6, the first servo motor 4 can drive the power shaft 33 to rotate, thereby causing the rotating mounting ring 37 to rotate along the rotating slide 40. This makes it convenient for the worker to pick up and put down the basket 6 without having to climb to a high place. Since the basket hanging shaft 5 can rotate around the rotating shaft seat 42, the opening of the basket 6 can always face upwards during the rotation of the rotating mounting ring 37. The movable door 3 is equipped with a second mounting base 13 welded to its outer wall. A vacuum pump 14 is bolted to the second mounting base 13, and a vacuum tube 22 is connected to the output end of the vacuum pump 14. After several baskets 6 containing braised products are hung on the hanging basket shaft 5, as described above, the baskets 6 can be fed into the drying chamber 2 along with the movable door 3. A third mounting base 20 is fixedly installed in the center of the inner wall of the movable door 3, and several sets of electric heating tubes 21 are evenly installed on the four sides of the third mounting base 20. First, the control panel 9 starts the main body 12 of the refrigeration mechanism and the cold trap coil 28 to achieve rapid cooling of the braised product material and form a solid ice crystal skeleton. Then, the vacuum pump 14 is started to evacuate the inner cavity of the drying chamber 2. After the inner cavity is evacuated to a certain vacuum level, the sublimation point of water is significantly reduced under low pressure. The electric heating tube 21 is then activated to initially heat the brine product material, causing ice crystals to sublimate and water vapor to escape. This process breaks molecular adsorption forces, removes bound water, and yields a porous, sponge-like freeze-dried product. The working cold trap coil 28 captures the escaped water vapor, achieving dehydration and drying. During operation, the rotating mounting ring 37 remains in a rotating state, ensuring more uniform freezing and ice crystal sublimation of the brine product, thus improving the quality of the finished product. After a certain period of vacuum freeze-drying, the vacuum pump 14 stops working. Once the air pressure inside the drying chamber 2 returns to normal, the worker can open the movable chamber door 3 and then remove the placement basket 6 in sequence. The operation is simple and highly practical. This invention includes a water receiving tank 30, a drain pipe 10, and a sealing water valve 15. As described above, after completing the vacuum freeze-drying of one or several batches of braised products, the user can close the movable chamber door 3, stop the operation of the main body 12 of the refrigeration mechanism, and simultaneously increase the heating temperature of the electric heating tube 21. The electric heating tube 21 is used to melt the frost formed by condensation on the cold trap coil 28. The melted water falls into the water receiving tank 30, and then the sealing water valve 15 is opened to drain the melted water through the drain pipe 10. Further heating keeps the drying chamber 2 dry, and workers can manually wipe away the melted water to ensure that the cold trap coil 28 is clean, dry, and ice-free, allowing for the next freeze-drying cycle to begin, thus achieving continuous and reliable operation of the equipment.

[0042] The above description is only a preferred embodiment 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 vacuum freeze-drying device for flavored marinated products, comprising a mounting base plate (1), a drying chamber (2), a movable chamber door (3), a fixed mounting ring (36), a rotating mounting ring (37), and a placement basket (6), characterized in that, A drying chamber (2) is fixedly welded to one side of the top surface of the mounting base plate (1). A movable slide rail (31) is symmetrically provided on one side of the top surface of the mounting base plate (1). Movable rollers (32) are symmetrically fixedly installed on the bottom surface of the movable chamber door (3), and the movable rollers (32) are located in the movable slide rail (31). A fixed mounting ring (36) is welded to one side of the movable chamber door (3), and a rotating slide groove (40) is provided on the inner wall of the fixed mounting ring (36). A rotating slide ring (41) is fixedly installed on the side wall of the rotating mounting ring (37), and the rotating slide ring (41) is movably embedded in the rotating slide groove (40). A rotating slide ring (41) is evenly fixedly installed on the side wall of the rotating mounting ring (37). Several rotating shaft seats (42) are provided, and a basket shaft (5) is installed inside the rotating shaft seat (42). Several sets of hooks (39) are symmetrically welded on the basket shaft (5). A handle (45) is symmetrically welded on the top surface of the placement basket (6), and a hanging rope (46) is attached to the handle (45). A first servo motor (4) is bolted to the side wall of the movable door (3), and a power shaft (33) is keyed to the output end of the first servo motor (4). A drive gear (34) is fixedly installed on the power shaft (33). A driven gear ring (38) is welded to the side wall of the rotating mounting ring (37), and the driven gear ring (38) meshes with the drive gear (34).

2. The vacuum freeze-drying equipment for flavored marinated products according to claim 1, characterized in that, The top surface of the drying chamber (2) is welded with a bearing frame (16), and a drive shaft (26) is installed on the bearing frame (16). A drive gear (27) is symmetrically fixed on the drive shaft (26). The top of the movable chamber door (3) is welded with a drive plate (18), and a toothed plate (19) is symmetrically welded on the top surface of the drive plate (18). The toothed plate (19) meshes with the drive gear (27). A drive box (24) is fixedly installed on the side wall of the bearing frame (16), and a worm gear (43) is installed inside the drive box (24). A second servo motor (25) is bolted to the side wall of the drive box (24), and the output end of the second servo motor (25) is keyed to one end of the worm gear (43). A worm wheel (44) is fixedly installed at one end of the drive shaft (26) located in the inner cavity of the drive box (24), and the worm wheel (44) cooperates with the worm gear (43).

3. The vacuum freeze-drying equipment for flavored marinated products according to claim 1, characterized in that, The drying chamber (2) is equipped with a cold trap coil (28). A first mounting base (11) is fixedly installed on one side of the mounting base plate (1), and a refrigeration mechanism body (12) is bolted on the first mounting base (11). The refrigeration mechanism body (12) can be connected and used in conjunction with the cold trap coil (28).

4. The vacuum freeze-drying equipment for flavored marinated products according to claim 1, characterized in that, The outer wall of the movable door (3) is welded with a second mounting base (13), and a vacuum pump (14) is bolted on the second mounting base (13). The output end of the vacuum pump (14) is connected to a vacuum tube (22), which passes through the movable door (3).

5. The vacuum freeze-drying equipment for flavored marinated products according to claim 1, characterized in that, The movable door (3) has a third mounting base (20) fixedly installed in the center of its inner wall, and several sets of electric heating tubes (21) are evenly installed on the four sides of the third mounting base (20).

6. The vacuum freeze-drying equipment for flavored marinated products according to claim 1, characterized in that, A water receiving trough (30) is fixedly installed on the bottom surface of the drying chamber (2), and a drain pipe (10) that penetrates the side wall of the drying chamber (2) is connected to the bottom of the inner cavity of the water receiving trough (30), and a sealing water valve (15) is installed on the drain pipe (10).

7. The vacuum freeze-drying equipment for flavored marinated products according to claim 2, characterized in that, The drying chamber (2) is fixedly installed with a control panel (9) on its side wall, and the control panel (9) is electrically connected to the first servo motor (4), the second servo motor (25), the main body of the refrigeration mechanism (12), the vacuum pump (14), the electric heating tube (21) and the sealing water valve (15).

8. The vacuum freeze-drying equipment for flavored marinated products according to claim 1, characterized in that, The drying chamber (2) has a first connecting block (8) welded to the four corners of its side wall, and a guide sleeve (17) is fixedly installed on the first connecting block (8). The movable chamber door (3) has a second connecting block (23) welded symmetrically on both sides, and a guide rod (7) is welded on the second connecting block (23), and the guide rod (7) is sleeved in the guide sleeve (17).

9. A vacuum freeze-drying device for flavored marinated products according to claim 3, characterized in that, A sealing groove (29) is provided on one side of the opening of the drying chamber (2), and a rubber sealing ring (35) is fixedly installed on the inner wall of the movable chamber door (3).

10. A vacuum freeze-drying device for flavored marinated products according to claim 1, characterized in that, The central axes of the fixed mounting ring (36), the rotating mounting ring (37), the rotating slide groove (40), and the rotating slide ring (41) are on the same straight line.

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