Vacuum refrigerator for fresh pseudo-ginseng materials

Abstract

The utility model relates to the technical field of pseudo-ginseng processing, in particular to a pseudo-ginseng fresh material vacuum refrigerator which comprises a vacuum refrigerator body, a drying cavity is formed in the front side of the vacuum refrigerator body, a support is arranged in the drying cavity and comprises two fixed vertical plates, and a plurality of fixed transverse plates are arranged between the two fixed vertical plates. A storage assembly is placed at the top of the fixing transverse plate and comprises a storage box, the top of the storage box is covered with a box cover, a plurality of ventilation top holes are formed in the top of the box cover, and L-shaped positioning plates detachably connected with the fixing transverse plate are arranged at the positions, close to the left end and the right end, of the front side of the box cover. According to the vacuum refrigerator for the fresh pseudo-ginseng materials, due to the matched design of the storage box and the box cover, the storage box comprises an L-shaped positioning plate, a U-shaped positioning groove and the like, a storage assembly in the vacuum refrigerator is stable and detachable, the dried fresh pseudo-ginseng materials can be conveniently taken out of the storage box, the problem that products are stacked and difficult to take out in traditional equipment is solved, and operation convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of Panax notoginseng processing, in particular to a vacuum freezer for fresh Panax notoginseng. Background Art

[0002] Panax notoginseng (Panax notoginseng) is a precious Chinese medicinal herb commonly used in Traditional Chinese Medicine (TCM). Its rhizomes possess numerous benefits, including promoting blood circulation and removing blood stasis, stopping bleeding, reducing swelling, and providing anti-inflammatory benefits. They are particularly effective in treating cardiovascular and cerebrovascular diseases, hemostasis after trauma, and anti-tumor effects. Due to its significant medicinal value, Panax notoginseng is widely used in various TCM preparations and health supplements. The active ingredients of Panax notoginseng, including notoginsenosides, flavonoids, and volatile oils, are highly sensitive to temperature and humidity. Therefore, Panax notoginseng must be processed immediately after harvest to maintain its efficacy. Freshly harvested Panax notoginseng rhizomes are typically damp, with a high internal moisture content, which directly impacts storage and subsequent processing. To prevent deterioration during storage or transportation, Panax notoginseng must be dried. Traditional drying methods, such as air drying and hot air drying, often result in the loss of active ingredients, take a long time, and are inefficient. Therefore, vacuum freeze-drying technology has gradually become an effective means of drying Panax notoginseng, which can quickly remove moisture at a lower temperature, maximize the retention of Panax notoginseng's medicinal ingredients, and improve drying efficiency.

[0003] The patent with publication number CN218600124U discloses a Panax notoginseng vacuum freeze-drying device, comprising an outer shell, a mounting cover detachably mounted on the outer shell, a ventilation valve fixedly mounted on the mounting cover, an outer box fixedly mounted inside the outer shell, an inner box disposed inside the outer box, densely ventilated holes being drilled through the inner box, a material limiting mechanism disposed inside the inner box, the material limiting mechanism comprising a limiting spring, and multiple groups of material limiting mechanisms, which are evenly distributed from top to bottom inside the inner box. During the rotation and dehydration process of the inner box, the limiting springs are affected by centrifugal force and contract, and the contracted limiting springs will tightly clamp the material. By providing the material limiting mechanism, the effect of controlling the uniform distribution of the material in the inner box is achieved, thereby improving the material drying efficiency and the integrity of the material.

[0004] While the above-mentioned prior art has improved drying efficiency, it still has some shortcomings during use. After drying, the Panax notoginseng often accumulates at the bottom of the inner box, which is fixedly connected to the motor output shaft, making it difficult to remove the dried Panax notoginseng. This not only affects the ease of operation but also directly reduces the efficiency of drying the next batch of Panax notoginseng. To address the above issues, it is urgent to improve the existing equipment. In view of this, we propose a vacuum freezer for fresh Panax notoginseng. Utility Model Content

[0005] The purpose of the present utility model is to provide a vacuum freezer for fresh Panax notoginseng materials, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present utility model provides the following technical solutions:

[0007] A vacuum freezer for fresh Panax notoginseng materials includes a vacuum freezer body. The vacuum freezer body is a prior art, and its specific structural composition will not be elaborated too much. The working principle of the vacuum freezer body is as follows: Place the prepared fresh Panax notoginseng materials in the drying chamber of the vacuum freeze dryer. Start the vacuum system, and the vacuum pump starts to work, quickly pumping out the air in the drying chamber to rapidly reduce the air pressure in the drying chamber to the set expected range. Since the boiling point of water significantly decreases in a low-pressure environment, the establishment of a vacuum not only helps the subsequent sublimation process but also avoids the high-temperature damage to the active ingredients in Panax notoginseng during water evaporation. When the air pressure in the drying chamber drops to the preset value, the refrigeration machine starts to work, rapidly reducing the temperature of the drying chamber to -40°C or below. At this time, the water in the fresh Panax notoginseng materials quickly freezes in the form of ice crystals. The core of this process is that low-temperature freezing can ensure that the water inside the fresh Panax notoginseng materials freezes into solid ice crystals without damaging the cell structure, thus providing a stable basis for the subsequent sublimation drying process. After the fresh Panax notoginseng materials are completely frozen, it enters the crucial drying stage. At this time, the vacuum system maintains a low-pressure environment, and the heating system of the drying chamber starts to work, gradually raising the temperature in the drying chamber to the appropriate sublimation temperature through micro heating. The purpose of heating is to prompt the frozen ice crystals in the fresh Panax notoginseng materials to directly sublimate into water vapor without going through the process of transforming into liquid water. Under vacuum and appropriate temperature control, the water in the fresh Panax notoginseng materials gradually sublimates from solid ice crystals into gaseous water vapor. At the same time, the water vapor condenses into liquid water on the condensation device in the drying chamber and is collected. When the drying process of the fresh Panax notoginseng materials is completely finished, the system automatically stops the heating and refrigeration devices and slowly restores the air pressure in the drying chamber to atmospheric pressure. Subsequently, open the sealing door and take out the dried Panax notoginseng product;

[0008] A drying chamber is provided on the front side of the vacuum freezer body for placing the fresh Panax notoginseng materials to be dried. This chamber can maintain a vacuum environment and quickly freeze and dry the samples at low temperature. A sealing door for closing the drying chamber is hinged on the front side of the vacuum freezer body to close the drying chamber and maintain the airtightness of the drying chamber during the vacuum pumping and drying processes, preventing external air from entering;

[0009] A bracket is provided in the drying chamber to support multiple storage components, ensuring the stability and detachable property of the storage components. The bracket includes two fixed vertical plates arranged symmetrically left and right. The vertical support structure is arranged symmetrically left and right, used to support and fix the fixed horizontal plate, and ensure the stability of the bracket. Between the two fixed vertical plates, there are multiple fixed horizontal plates arranged at equal intervals up and down, ensuring the effective utilization of space for multi-layer drying;

[0010] On the top of the fixed horizontal plate, there is a storage component. The storage component includes a storage box for loading fresh Radix Notoginseng. On both the left and right sides of the storage box, there are multiple ventilation side holes a for providing air circulation during the drying process, helping the moisture to be discharged smoothly, and ensuring the drying uniformity. The top of the storage box is covered with a box cover for placing the fresh Radix Notoginseng to be dried. It is composed of the storage box and the box cover, ensuring that the fresh Radix Notoginseng is in a stable space during the drying process, and preventing the fresh Radix Notoginseng from floating in the vacuum environment. On the top of the box cover, there are multiple ventilation top holes for air circulation, ensuring that the moisture in the storage box can be discharged smoothly, and helping to accelerate the drying process. On both the left and right sides of the box cover, there are multiple ventilation side holes b, which cooperate with the ventilation top holes to ensure that air can circulate during the drying process. On the front side of the box cover and near both ends, there are L-shaped positioning plates detachably connected to the fixed horizontal plate, used to insert into the U-shaped positioning groove, ensuring the cooperation between the box cover and the fixed horizontal plate, and guaranteeing the stability of the box cover.

[0011] Preferably, in the middle of the right side of the sealing door, there is a rectangular convex block. On the front side of the rectangular convex block, there is a circular hole. Inside the circular hole, there is a fastening threaded rod. At the front end of the fastening threaded rod, there is a rotating wheel, which can facilitate the staff to rotate the fastening threaded rod. On the outer wall of the fastening threaded rod and near the front end, there is an annular pressing plate.

[0012] Preferably, on the front side of the vacuum freezer body and near the middle of the right edge of the drying chamber, there is a threaded groove. The threaded end of the fastening threaded rod is threadedly connected to the threaded groove. The rear side of the annular pressing plate abuts against the front side of the rectangular convex block, ensuring that the sealing door is tightly pressed against the drying chamber opening when closed, and ensuring the vacuum state.

[0013] Preferably, at the bottom of the vacuum freezer body, there are multiple brakeable universal wheels arranged in a matrix for the movement and positioning of the equipment. When the equipment is not in use, it can be fixed in position through the brakeable universal wheels, ensuring the safety and stability of the equipment.

[0014] Preferably, on the front side of the bottom of the fixed horizontal plate and near both ends, there are U-shaped positioning grooves. The horizontal plate of the L-shaped positioning plate is inserted into the U-shaped positioning groove, providing the plug-in positioning of the L-shaped positioning plate, and ensuring the stability of the storage box during the drying process.

[0015] Preferably, a U-shaped avoidance opening is provided in the middle of the front side of the fixed horizontal plate, and a handle groove is provided at the bottom of the storage box near the middle of the front side edge, which is convenient for the staff to pull the storage box outwards so as to take out the dried pseudo-ginseng.

[0016] Preferably, positioning holes b are provided at the front side of the storage box near the left and right ends, and positioning blocks are provided at the rear side of the vertical plate of the L-shaped positioning plate. The positioning blocks are inserted into the positioning holes b for inserting into the positioning holes b of the storage box to ensure the stable connection between the storage box and the box cover.

[0017] Preferably, positioning longitudinal bars are provided at the top of the fixed horizontal plate near the left and right sides, and the storage box is located between the two positioning longitudinal bars to limit the left and right movement of the storage box and ensure the stable position of the storage box during the drying process.

[0018] Preferably, a rear baffle is provided at the top of the fixed horizontal plate near the rear side. The rear sides of the storage box and the box cover are both in contact with the front side of the rear baffle to limit the rear sides of the storage box and the box cover and prevent them from being displaced during the drying process. A positioning hole a is provided at the front side of the rear baffle near the top, and a strip-shaped limiting plate is provided at the middle of the rear side of the box cover. The strip-shaped limiting plate is inserted into the positioning hole a. The strip-shaped limiting plate is used to insert into the positioning hole a on the rear baffle to ensure the stable position of the rear side of the box cover and effectively avoid the displacement of the storage component in the vacuum environment.

[0019] Preferably, the front side of the L-shaped positioning plate abuts against the rear side of the sealing door to ensure the stability of the storage component in the drying cavity.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1. For this vacuum freezer for fresh pseudo-ginseng, the combined design of the storage box and the box cover, including the L-shaped positioning plate, U-shaped positioning groove, etc., makes the storage component inside the equipment stable and detachable, and the dried fresh pseudo-ginseng can be conveniently taken out from the storage box, solving the problem of difficult extraction of piled-up products in traditional equipment and improving the operation convenience.

[0022] 2. For this vacuum freezer for fresh pseudo-ginseng, through the air-permeable side holes and top holes on the storage box and the box cover, the air circulation in the drying cavity is ensured, the moisture is effectively discharged, and local water accumulation of the fresh pseudo-ginseng during the drying process is avoided, thereby ensuring the uniformity of drying.

[0023] 3. For this vacuum freezer for fresh pseudo-ginseng, the bottom of the equipment is equipped with brakeable universal wheels, which is convenient for the movement and positioning of the equipment and ensures the safety and stability during use or storage. Description of the Drawings

[0024] Figure 1Schematic diagram of the overall structure of the present utility model;

[0025] Figure 2 Schematic diagram of the assembly structure of the sealing door and the fastening threaded rod in the present utility model;

[0026] Figure 3 One of the partial structure schematic diagrams of the present utility model;

[0027] Figure 4 Another partial structure schematic diagram of the present utility model;

[0028] Figure 5 Partial structure schematic diagram of the bracket in the present utility model;

[0029] Figure 6 The third partial structure schematic diagram of the present utility model;

[0030] Figure 7 Schematic diagram of the structure of the storage component in the present utility model;

[0031] Figure 8 Schematic diagram of the structure of the box cover in the present utility model;

[0032] In the figure: 1. Vacuum freezer body; 10. Drying chamber; 11. Thread groove; 2. Sealing door; 20. Rectangular convex block; 200. Circular hole; 3. Bracket; 30. Fixed vertical plate; 31. Fixed horizontal plate; 310. U-shaped avoidance opening; 311. U-shaped positioning groove; 32. Rear baffle; 33. Positioning hole a; 34. Positioning longitudinal strip; 4. Storage component; 40. Storage box; 400. Ventilation side hole a; 401. Handle groove; 402. Positioning hole b; 41. Box cover; 410. Ventilation top hole; 411. Ventilation side hole b; 412. L-shaped positioning plate; 413. Positioning block; 414. Strip-shaped limiting plate; 5. Fastening threaded rod; 50. Rotating wheel; 51. Annular pressing plate; 6. Brakeable universal wheel. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0035] Please refer to Figures 1-8 , the present utility model provides a technical solution:

[0036] A vacuum freezer for fresh Panax notoginseng materials, including a vacuum freezer body 1. The vacuum freezer body 1 is prior art, and its specific structural composition will not be elaborated too much. The working principle of the vacuum freezer body 1 is as follows: Place the prepared fresh Panax notoginseng materials in the drying chamber 10 of the vacuum freeze dryer, start the vacuum system, and the vacuum pump starts to work, quickly pumping out the air in the drying chamber 10, so that the air pressure in the drying chamber 10 rapidly drops to the set expected range. Due to the significantly reduced boiling point of water in a low-pressure environment, the establishment of a vacuum not only helps the subsequent sublimation process but also avoids the high-temperature damage to the effective components in Panax notoginseng during water evaporation. When the air pressure in the drying chamber 10 drops to the preset value, the refrigeration machine starts to work, quickly reducing the temperature of the drying chamber 10 to -40°C or below. At this time, the water in the fresh Panax notoginseng materials quickly freezes in the form of ice crystals. The core of this process is that low-temperature freezing can ensure that the water inside the fresh Panax notoginseng materials freezes into solid ice crystals without damaging the cell structure, thus providing a stable basis for the subsequent sublimation drying process. After the fresh Panax notoginseng materials are completely frozen, it enters the crucial drying stage. At this time, the vacuum system maintains a low-pressure environment, and the heating system of the drying chamber 10 starts to work, gradually raising the temperature in the drying chamber 10 to the appropriate sublimation temperature through micro-heating. The purpose of heating is to promote the direct sublimation of the frozen ice crystals in the fresh Panax notoginseng materials into water vapor without going through the process of transforming into liquid water. Under vacuum and appropriate temperature control, the water in the fresh Panax notoginseng materials gradually sublimes from solid ice crystals into gaseous water vapor. At the same time, the water vapor condenses into liquid water on the condensation device in the drying chamber 10 and is collected. When the drying process of the fresh Panax notoginseng materials is completely finished, the system automatically stops the heating and refrigeration devices and slowly restores the air pressure in the drying chamber 10 to atmospheric pressure. Subsequently, open the sealing door 2 and take out the dried Panax notoginseng products;

[0037] A drying chamber 10 is defined on the front of the vacuum freezer body 1 for placing fresh Panax notoginseng material to be dried. This chamber maintains a vacuum environment and rapidly freezes and dries the sample at low temperatures. A sealing door 2 is hingedly attached to the front of the vacuum freezer body 1 to seal the drying chamber 10. This door is used to seal the drying chamber 10 and prevent air from entering during the vacuuming and drying process.

[0038] A bracket 3 is provided in the drying chamber 10 to support multiple storage assemblies 4 and ensure the stability and detachability of the storage assemblies 4. The bracket 3 includes two fixed vertical plates 30 arranged symmetrically on the left and right, and a vertical support structure is arranged symmetrically on the left and right to support and fix the fixed horizontal plate 31 and ensure the stability of the bracket 3. A plurality of fixed horizontal plates 31 are arranged equidistantly in the upper and lower directions between the two fixed vertical plates 30 to ensure the effective utilization of space for multi-layer drying.

[0039] A storage assembly 4 is placed on the top of the fixed horizontal plate 31. The storage assembly 4 includes a storage box 40 for loading fresh Panax notoginseng. A plurality of ventilation side holes a400 are opened on the left and right sides of the storage box 40 to provide air circulation during the drying process, help the water to be discharged smoothly, and ensure the uniformity of drying. The top of the storage box 40 is covered with a box cover 41 for placing the fresh Panax notoginseng to be dried. The storage box 40 and the box cover 41 ensure that the fresh Panax notoginseng is in a stable space during the drying process to prevent the fresh Panax notoginseng from floating in a vacuum environment. The top of the box cover 41 is There are multiple ventilation top holes 410 on the top of the box 40 for air circulation, ensuring that the moisture in the storage box 40 can be discharged smoothly, which helps to speed up the drying process. There are multiple ventilation side holes b411 on the left and right sides of the box cover 41, which cooperate with the ventilation top holes 410 to ensure that air can circulate during the drying process. The front side of the box cover 41 and near the left and right ends are provided with L-shaped positioning plates 412 that are detachably connected to the fixed horizontal plate 31, which are used to insert into the U-shaped positioning groove 311 to ensure that the box cover 41 cooperates with the fixed horizontal plate 31 and ensure the stability of the box cover 41.

[0040] In this embodiment, a rectangular protrusion 20 is provided in the middle of the right side of the sealing door 2, and a circular hole 200 is opened on the front side of the rectangular protrusion 20. A fastening threaded rod 5 is connected to the circular hole 200, and a rotating wheel 50 is provided at the front end of the fastening threaded rod 5. The rotating wheel 50 can facilitate the staff to rotate the fastening threaded rod 5. An annular pressure plate 51 is provided on the outer wall of the fastening threaded rod 5 and near the front end.

[0041] Specifically, a thread groove 11 is provided on the front side of the vacuum freezer body 1 and near the middle of the right edge of the drying chamber 10. The threaded end of the fastening threaded rod 5 is threadedly connected to the thread groove 11. The rear side of the annular pressure plate 51 is abutted against the front side of the rectangular protrusion 20 to ensure that the sealing door 2 is tightly pressed against the opening of the drying chamber 10 when closed, thereby ensuring a vacuum state.

[0042] Furthermore, a plurality of brakeable universal wheels 6 arranged in a matrix are provided at the bottom of the vacuum freezer body 1 for the movement and positioning of the equipment. When the equipment is not in use, its position can be fixed through the brakeable universal wheels 6 to ensure the safety and stability of the equipment.

[0043] Furthermore, U-shaped positioning grooves 311 are respectively formed at the front side of the bottom of the fixed horizontal plate 31 near the left and right ends. The horizontal plate of the L-shaped positioning plate 412 is inserted into the U-shaped positioning grooves 311 to provide insertion positioning for the L-shaped positioning plate 412 and ensure the stability of the storage box 40 during the drying process.

[0044] Furthermore, a U-shaped avoidance opening 310 is formed in the middle of the front side of the fixed horizontal plate 31. A handle groove 401 is formed at the bottom of the storage box 40 near the middle of the front side edge, facilitating the staff to pull out the storage box 40 outward so as to take out the dried pseudo-ginseng.

[0045] Furthermore, positioning holes b402 are respectively formed at the front side of the storage box 40 near the left and right ends. A positioning block 413 is provided at the rear side of the vertical plate of the L-shaped positioning plate 412. The positioning block 413 is inserted into the positioning holes b402 to insert into the positioning holes b402 of the storage box 40 and ensure the stable connection between the storage box 40 and the box cover 41.

[0046] Furthermore, positioning longitudinal bars 34 are respectively provided at the top of the fixed horizontal plate 31 near the left and right sides. The storage box 40 is located between the two positioning longitudinal bars 34 to limit the left and right movement of the storage box 40 and ensure the stable position of the storage box 40 during the drying process.

[0047] Furthermore, a rear baffle 32 is provided at the top of the fixed horizontal plate 31 near the rear side. The rear sides of the storage box 40 and the box cover 41 are respectively in contact with the front side of the rear baffle 32 to limit the rear sides of the storage box 40 and the box cover 41 and prevent them from shifting during the drying process. A positioning hole a33 is formed at the front side of the rear baffle 32 near the top. A strip-shaped limiting plate 414 is formed in the middle of the rear side of the box cover 41. The strip-shaped limiting plate 414 is inserted into the positioning hole a33. The strip-shaped limiting plate 414 is used to insert into the positioning hole a33 on the rear baffle 32 to ensure the stable position of the rear side of the box cover 41 and effectively avoid the displacement of the storage component 4 in the vacuum environment.

[0048] Furthermore, the front side of the L-shaped positioning plate 412 abuts against the rear side of the sealing door 2 to ensure the stability of the storage component 4 in the drying chamber 10.

[0049] When the vacuum freezer for fresh Panax notoginseng materials of this embodiment is in use, prepare fresh Panax notoginseng materials, clean and remove impurities to ensure they are clean and pollution-free. Then, evenly place the fresh Panax notoginseng materials into the storage box 40, avoiding excessive stacking to ensure uniform drying. Subsequently, cover the box cover 41 on the top of the storage box 40 in a forward offset manner, and then push the box cover 41 backward so that the two positioning blocks 413 are respectively inserted into the two positioning holes b402. Then, open the sealing door 2, place the storage box 40 on the top of the fixed cross plate 31, and push it backward. Insert the L-shaped positioning plate 412 into the U-shaped positioning groove 311 of the fixed cross plate 31 to ensure the stability of the storage box 40 and ensure that the box cover 41 is firmly connected to the fixed cross plate 31 through the L-shaped positioning plate 412. After loading, close the sealing door 2 and firmly fix it through the fastening screw rod 5. Start the vacuum pump to quickly extract the air in the drying chamber 10 until the air pressure drops to the preset value. Subsequently, start the refrigerating machine to quickly reduce the temperature of the drying chamber 10 to -40°C or below to ensure that the moisture inside the fresh Panax notoginseng materials freezes in the form of ice crystals. After the freezing is completed, start the heating system to slowly heat the drying chamber 10 to the appropriate sublimation temperature, so that the ice crystals in the fresh Panax notoginseng materials directly sublimate into water vapor, and the water vapor is condensed into liquid water by the condensation device for collection. After the drying process is completed, the system will automatically stop heating and refrigerating, and gradually restore the air pressure in the drying chamber 10 to the atmospheric pressure. Finally, open the sealing door 2, take out the storage box 40 through the handle groove 401 on the storage box 40, and then open the box cover 41 to take out the fresh Panax notoginseng materials. During the operation process, attention should be paid to safety to avoid direct contact with the low-temperature surface.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum freezer for fresh Panax notoginseng, comprising a vacuum freezer body (1), a drying chamber (10) being provided on the front side of the vacuum freezer body (1), and a sealing door (2) being hingedly connected to the front side of the vacuum freezer body (1) for closing the drying chamber (10), characterized in that: A bracket (3) is provided in the drying chamber (10), the bracket (3) comprising two fixed vertical plates (30) symmetrically arranged on the left and right, a plurality of fixed horizontal plates (31) equidistantly arranged on the top and bottom of the two fixed vertical plates (30), a storage assembly (4) is placed on the top of the fixed horizontal plates (31), the storage assembly (4) comprising a storage box (40), a plurality of ventilation side holes a (400) being provided on both the left and right sides of the storage box (40), a box cover (41) being covered on the top of the storage box (40), a plurality of ventilation top holes (410) being provided on the top of the box cover (41), a plurality of ventilation side holes b (411) being provided on both the left and right sides of the box cover (41), and an L-shaped positioning plate (412) detachably connected to the fixed horizontal plate (31) being provided on the front side of the box cover (41) and near the left and right ends.

2. The vacuum freezer for fresh Panax notoginseng according to claim 1, characterized in that: A rectangular protrusion (20) is provided in the middle of the right side of the sealing door (2), a circular hole (200) is provided on the front side of the rectangular protrusion (20), a fastening threaded rod (5) is connected in the circular hole (200), a rotating wheel (50) is provided at the front end of the fastening threaded rod (5), and an annular pressure plate (51) is provided on the outer wall of the fastening threaded rod (5) near the front end.

3. The vacuum freezer for fresh Panax notoginseng according to claim 2, wherein: A thread groove (11) is provided on the front side of the vacuum freezer body (1) and near the middle of the right edge of the drying chamber (10). The threaded end of the fastening threaded rod (5) is threadedly connected to the thread groove (11). The rear side of the annular pressure plate (51) abuts against the front side of the rectangular protrusion (20).

4. The vacuum freezer for fresh Panax notoginseng according to claim 1, characterized in that: The bottom of the vacuum freezer body (1) is provided with a plurality of brakeable universal wheels (6) arranged in a matrix.

5. The vacuum freezer for fresh Panax notoginseng according to claim 1, characterized in that: U-shaped positioning grooves (311) are provided on the front side of the bottom of the fixed horizontal plate (31) and near the left and right ends, and the horizontal plate of the L-shaped positioning plate (412) is inserted into the U-shaped positioning grooves (311).

6. The vacuum freezer for fresh Panax notoginseng according to claim 1, characterized in that: A U-shaped avoidance opening (310) is provided in the middle of the front side of the fixed transverse plate (31), and a handle groove (401) is provided at the bottom of the storage box (40) near the middle of the front edge.

7. The vacuum freezer for fresh Panax notoginseng according to claim 1, characterized in that: Positioning holes b (402) are provided on the front side of the storage box (40) and near the left and right ends. Positioning blocks (413) are provided on the rear side of the vertical plate of the L-shaped positioning plate (412). The positioning blocks (413) are inserted into the positioning holes b (402).

8. The vacuum freezer for fresh Panax notoginseng according to claim 1, characterized in that: Positioning longitudinal bars (34) are provided at the top of the fixed transverse plate (31) and near the left and right sides, and the storage box (40) is located between the two positioning longitudinal bars (34).

9. The vacuum freezer for fresh Panax notoginseng according to claim 1, characterized in that: A rear baffle (32) is provided at the top and near the rear side of the fixed transverse plate (31); the rear sides of the storage box (40) and the box cover (41) are both in contact with the front side of the rear baffle (32); a positioning hole a (33) is provided at the front side and near the top of the rear baffle (32); a strip-shaped limiting plate (414) is provided in the middle of the rear side of the box cover (41); the strip-shaped limiting plate (414) is inserted into the positioning hole a (33).

10. The vacuum freezer for fresh Panax notoginseng according to claim 1, characterized in that: The front side of the L-shaped positioning plate (412) abuts against the rear side of the sealing door (2).

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