A rapid freeze loading device for a vacuum freeze drying system

Abstract

The utility model relates to the technical field of vacuum freeze drying, more particularly to a kind of quick freezing loading device for vacuum freeze drying system, including box and refrigerant, the box is equipped with the refrigeration hole of the reagent to be refrigerated and dried that can be stored, the outer surface of the box is equipped with the perfusion port of the intercavity of box communication, the perfusion port is equipped with locking cover, the locking cover with the perfusion port detachable connection, the refrigerant can be injected into the intercavity of the box by the perfusion port. The quick freezing loading device for vacuum freeze drying system of the utility model can further speed up the freezing speed of reagent when carrying out vacuum freeze drying, shorten the time required for reagent to freeze and condense into solid sufficiently, to further improve the efficiency of reagent vacuum freeze drying.

Description

Technical Field

[0001] This utility model relates to the technical field of vacuum freeze-drying, and more specifically, to a rapid freezing loading device for a vacuum freeze-drying system. Background Technology

[0002] Vacuum freeze-drying is a drying technology that freezes wet materials or solutions into a solid state at a low temperature, and then, under vacuum, causes the water in the material to sublimate directly into a gaseous state without passing through a liquid state, ultimately dehydrating the material. Currently, freeze-drying methods for liquid materials generally involve pre-freezing using a low-temperature freezer. The material to be freeze-dried is placed in centrifuge tubes and placed in a low-temperature freezer at -20°C to -80°C, causing the liquid to solidify. Then, the centrifuge tubes are placed under high vacuum (6-40 Pa), causing the solid to vaporize directly, thereby removing moisture and completing the freeze-drying process. Vacuum freeze-drying effectively removes moisture while preserving the original structure and nutrients of the material to the greatest extent possible.

[0003] However, when freezing liquids at low temperatures, a relatively long freezing time is required for the liquid to fully freeze and solidify into a solid (generally 4-6 hours). If the liquid is not fully frozen, the liquid material in the centrifuge tube will splash out when the solid ice is vaporized under high vacuum conditions, causing contamination of the low-temperature freeze dryer and resulting in property damage. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies that require a long time to fully freeze liquids for low-temperature freeze-drying, and to provide a rapid freezing loading device for vacuum freeze-drying systems. This solution can further shorten the freezing time of liquids for low-temperature freeze-drying, so that the liquid can be fully frozen and solidified in a shorter freezing time, and the problem of material splashing outward when solid ice vaporizes under high vacuum conditions will not occur.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A rapid freezing loading device for a vacuum freeze-drying system is provided, comprising a housing and a refrigerant. The housing is provided with a freezing hole for storing the reagent to be freeze-dried. The outer surface of the housing is provided with a filling port communicating with the inner cavity of the housing. The filling port is provided with a locking cap, which is detachably connected to the filling port. The refrigerant can be injected into the inner cavity of the housing through the filling port.

[0006] In the above technical solution, the freezing holes on the chamber are separated from the inner cavity of the chamber by the side walls and bottom surface of the freezing holes. The chamber is a hollow chamber, with the filling port connecting the inner cavity and the outside. The locking cap is threadedly connected to the filling port, which further enhances the connection strength between the filling port and the locking cap, ensuring the airtightness of the chamber. The locking cap is located on the side wall of the chamber near the top surface, which can further increase the amount of refrigerant filled into the chamber, thereby accelerating the freezing speed of the reagent. The refrigerant has a temperature lower than the temperature inside the low-temperature freezer, that is, the temperature of the refrigerant is less than -20℃ to -80℃, and its specific value is adjusted according to the actual situation.

[0007] In use, the rapid freezing loading device of this invention first opens the locking cap of the filling port, then injects refrigerant into the inner cavity of the chamber through the filling port. The refrigerant entering the inner cavity of the chamber will contact the side walls and bottom surface of the freezing hole. After the refrigerant is filled, the device is placed in the low-temperature freeze-drying system (low-temperature freeze dryer), and finally the reagent is placed in the freezing hole. After the reagent is placed, the vacuum freeze-drying system starts working, putting the freezing device in a low-temperature environment. At this time, the reagent in the freezing loading device can exchange heat with the refrigerant in the inner cavity of the chamber through the freezing hole, and can also exchange heat with the external low-temperature environment. Under the combined effect of these two factors, the freezing speed of the reagent in the freezing hole is accelerated, shortening the time required for the reagent to completely solidify. Under normal circumstances, the reagent only needs 0.5-1 hour to be completely frozen. After the reagent is completely solidified, the rapid freezing loading device is placed in the high vacuum environment of the vacuum freeze-drying system. At this time, the solid ice in the solid reagent directly vaporizes. During the vaporization process of the solid ice, the refrigerant in the chamber will continue to cool the reagent in the freezing hole, preventing the reagent from turning into liquid and splashing outwards under high vacuum conditions.

[0008] The rapid freezing loading device for vacuum freeze-drying systems of this invention can further accelerate the freezing speed of reagents during vacuum freeze-drying, shorten the time required for reagents to fully freeze and solidify, and thus improve the efficiency of vacuum freeze-drying of reagents.

[0009] Furthermore, it also includes a spray shield to prevent the reagent to be freeze-dried from splashing. The spray shield is detachably connected to the freezing hole and has vent holes for gas to pass through. The top of the sidewall of the freezing hole protrudes from the top surface of the housing to form a connecting part. The outer surface of the connecting part is threaded, allowing the spray shield to cover the connecting part. The inner cavity of the spray shield is also threaded, meaning the spray shield and the connecting part are threaded together. The threaded connection of the spray shield not only provides high connection strength but also facilitates easy assembly and disassembly. The spray shield can intercept splashed reagents, further preventing incompletely condensed reagents from vaporizing and splashing outwards in a high vacuum environment, thus preventing contamination inside the low-temperature freeze dryer. The vent holes on the spray shield allow vaporized solid ice to escape from the freezing hole along the vent holes. When reagent splashing occurs, liquid and semi-solid reagents cannot pass through the vent holes, thus preventing reagents from splashing outwards.

[0010] Furthermore, the vent holes are multiple and arranged in an array on the blowout preventer, with a diameter of 0.5mm-2.5mm. Experiments have shown that a vent hole diameter of 0.5mm-2.5mm effectively prevents liquid or semi-solid reagents from splashing outwards. By providing multiple arrayed vent holes on the blowout preventer, splashed reagents cannot completely block the vent holes, effectively preventing sublimated solid ice from escaping if the vent holes are blocked.

[0011] Furthermore, the blowout preventer includes a sidewall, a top surface, and a middle surface. The top surface and the middle surface are parallel and both are fixedly connected to the sidewall. The sidewall is detachably connected to the freezing hole. The vent includes a first hole on the top surface and a second hole on the middle surface. On a projection plane parallel to the top surface, the projections of the first hole and the second hole do not coincide. The blowout preventer has two surfaces, a top surface and a middle surface. The holes on the two surfaces together form the vent. The projections of the first hole and the second hole do not coincide, that is, the first hole and the second hole are misaligned. The misaligned arrangement of the two holes ensures that when reagent splashes, the splashed reagent continues to move forward through the second hole and is intercepted by the top surface, while the sublimated water vapor will successively pass through the second hole and the first hole and escape outward.

[0012] Furthermore, the enclosure is a heat-conducting enclosure capable of rapid heat transfer. Since the sidewalls and bottom of the freezing holes are part of the enclosure and made of the same material, they also enable rapid heat transfer. In this case, the reagent inside the freezing holes can rapidly exchange heat with the refrigerant inside the enclosure through the sidewalls and bottom of the freezing holes. The enclosure can be a metal enclosure with good thermal conductivity, such as aluminum alloy or alloy steel.

[0013] Furthermore, the refrigerant is liquid nitrogen. Liquid nitrogen has strong cooling capacity, stable chemical form, and is non-toxic and has good fluidity. Choosing liquid nitrogen as the refrigerant allows for rapid cooling of the reagents inside the freezing holes, and after injection, it can quickly envelop the freezing holes, resulting in faster heat exchange. However, since the volume increases after liquid nitrogen vaporizes, the enclosure must be made of a material with sufficient strength to prevent the enclosure from exploding after the liquid nitrogen vaporizes. Generally, high-strength alloy steel is chosen.

[0014] Furthermore, a handle is provided on the side wall of the enclosure, and the handle is fixedly connected to the outer side wall of the enclosure. The handle is installed on the side wall of the enclosure. Because the enclosure itself has good thermal conductivity and the refrigerant temperature inside the enclosure is low, the operator can move the enclosure using the handle, avoiding direct contact with the outer surface of the enclosure and reducing the risk of frostbite.

[0015] Furthermore, the system also includes a mounting bracket, which can be fixedly installed in the freezing port. The bracket has mounting holes for holding centrifuge tubes containing reagents. Multiple brackets are included, with the mounting hole sizes increasing sequentially to secure centrifuge tubes of various sizes within the freezing port. When centrifuge tubes are used to hold liquid reagents, they are typically placed in the freezing port to freeze the reagents. Since centrifuge tubes come in different sizes, mounting brackets are used to secure them in the freezing port to ensure stable placement of various sizes. Multiple models of mounting brackets are available, each with different mounting hole sizes. A suitable bracket can be selected to secure the centrifuge tubes in the freezing port. The connecting portion protruding from the top surface of the chamber on the side wall of the freezing port has a groove, the bottom of which is flush with the top surface of the chamber. The mounting bracket has a protrusion that engages within the groove, preventing the bracket from falling into the freezing port. When the mounting bracket is fixedly installed inside the freezing hole, the protrusion engages with the groove, and the entire mounting bracket is inserted into the inner cavity of the freezing hole, with the outer side wall of the mounting bracket fitting against the inner side wall of the freezing hole.

[0016] Furthermore, the mounting bracket is provided with a removable part that extends to the outside of the freezing hole, and the removable part is fixedly connected to the mounting bracket. The removable part is located at one end of the protrusion far from the mounting bracket, and the removable part makes it easier to remove the mounting bracket from the freezing hole. The removable part protrudes from the top surface of the cabinet, making it easier for the operator to grasp.

[0017] Furthermore, there are multiple freezing holes, which are arranged in an array on the top surface of the housing. Having multiple freezing holes allows for the simultaneous freezing and condensation of more reagents, further improving the freezing and condensation efficiency of the reagents.

[0018] Compared with the prior art, the beneficial effects of this utility model are: The present invention provides a rapid freezing loading device for a vacuum freeze-drying system, which can further accelerate the freezing speed of reagents during vacuum freeze-drying, shorten the time required for reagents to fully freeze and solidify, and thus improve the efficiency of vacuum freeze-drying of reagents. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a first embodiment of a rapid freezing loading device for a vacuum freeze-drying system; Figure 2 This is a schematic diagram of the internal structure of a container in an embodiment of a rapid freezing loading device for a vacuum freeze-drying system; Figure 3 This is a schematic diagram of a second embodiment of a rapid freezing loading device for a vacuum freeze-drying system; Figure 4 This is a schematic diagram of a second embodiment of a rapid freezing loading device for a vacuum freeze-drying system, excluding the blowout preventer. Figure 5 This is a schematic diagram of the structure of a mounting frame for a rapid freezing loading device used in a vacuum freeze-drying system; Figure 6 This is a schematic diagram of the blowout preventer of a second embodiment of a rapid freezing loading device for a vacuum freeze-drying system. Figure 7 This is a schematic diagram of the blowout preventer of a third embodiment of a rapid freezing loading device for a vacuum freeze-drying system. Figure 8 This is a schematic diagram of the blowout cover from another angle of a third embodiment of a rapid freezing loading device for a vacuum freeze-drying system; Figure 9 This is a schematic diagram of the internal structure of the blowout cover of a rapid freezing loading device for a vacuum freeze-drying system, according to Embodiment 3.

[0020] In the attached diagram: 100, housing; 200, locking cover; 300, blowout cover; 400, handle; 500, mounting bracket; 110, freezing hole; 120, filling port; 111, connecting part; 112, groove; 310, vent hole; 320, side wall; 330, top surface; 340, middle surface; 311, first hole body; 312, second hole body; 510, fixing hole; 520, protrusion; 530, picking part. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0022] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] Example 1 This embodiment is a first embodiment of a rapid freezing loading device for a vacuum freeze-drying system, such as... Figure 1 and Figure 2 As shown, the device includes a housing 100 and a refrigerant. The housing 100 is provided with a freezing hole 110 for storing reagents to be freeze-dried. The outer surface of the housing 100 is provided with a filling port 120 that communicates with the inner cavity of the housing 100. The filling port 120 is provided with a locking cover 200, which is detachably connected to the filling port 120. The refrigerant can be injected into the inner cavity of the housing 100 through the filling port 120.

[0024] Specifically, the freezing hole 110 on the chamber 100 is separated from the inner cavity of the chamber 100 by the side wall and bottom surface of the freezing hole 110. The chamber 100 is a hollow chamber 100, and the filling port 120 connects the inner cavity of the chamber 100 to the outside. The locking cap 200 is threadedly connected to the filling port 120, which can further enhance the connection strength between the filling port 120 and the locking cap 200, ensuring the airtightness of the chamber 100. The locking cap 200 is located on the side wall of the chamber 100 near the top surface of the chamber 100, which can further increase the amount of refrigerant filled into the chamber 100, thereby accelerating the freezing speed of the reagent. The refrigerant has a temperature lower than the temperature inside the low-temperature freezer, that is, the temperature of the refrigerant is less than -20℃ to -80℃.

[0025] The working principle or process of this embodiment is as follows: When using the device, first open the locking cap 200 of the filling port 120, then inject the refrigerant into the inner cavity of the chamber 100 through the filling port 120. The refrigerant entering the inner cavity of the chamber 100 will contact the side wall and bottom surface of the freezing hole 110. After the refrigerant is filled, place the device in the low-temperature freeze-drying system (low-temperature freeze dryer), and finally place the reagent into the freezing hole 110. After the reagent is placed, the vacuum freeze-drying system starts working, putting the freezing device into a low-temperature environment. At this time, the reagent in the freezing device can exchange heat with the refrigerant in the inner cavity of the chamber 100 through the freezing hole 110, and can also exchange heat with the external low-temperature environment. Under the combined effect of these two factors, the freezing speed of the reagent in the freezing hole 110 is accelerated, shortening the time required for the reagent to completely solidify. Under normal circumstances, the reagent only needs 0.5-1 hour to be completely frozen. Once the reagent has completely solidified, the rapid freezing loading device is placed in the high vacuum environment of the vacuum freeze-drying system. At this time, the solid ice in the solid reagent directly vaporizes. During the vaporization process of the solid ice, the refrigerant in the chamber 100 will continue to cool the reagent in the freezing hole 110, preventing the reagent from turning into liquid and splashing outward under high vacuum conditions.

[0026] The beneficial effects of this embodiment are as follows: The rapid freezing loading device for the vacuum freeze-drying system in this embodiment can further accelerate the freezing speed of reagents during vacuum freeze-drying, shorten the time required for reagents to fully freeze and solidify, and thus improve the efficiency of vacuum freeze-drying of reagents.

[0027] Example 2 This embodiment is a second embodiment of a rapid freezing loading device for a vacuum freeze-drying system. Based on the first embodiment, this embodiment further defines the structure of the device.

[0028] Specifically, such as Figure 2 and Figure 3 As shown, it also includes a spray shield 300 to prevent the reagent to be freeze-dried from splashing. The spray shield 300 is detachably connected to the freezing hole 110, and the spray shield 300 has a vent hole 310 for gas to pass through. The top of the side wall of the freezing hole 110 protrudes from the top surface of the housing 100 to form a connecting part 111. The outer surface of the connecting part 111 is threaded, and the spray shield 300 can be fitted onto the connecting part 111. The inner cavity of the spray shield 300 is also threaded, that is, the spray shield 300 and the connecting part 111 are threadedly connected. The threaded connection of the spray shield 300 not only has high connection strength, but also makes it easy to install and remove.

[0029] Specifically, such as Figure 6 As shown, there are multiple vent holes 310, which are arranged in an array on the blowout preventer 300. The diameter of the vent holes 310 is 0.5mm-2.5mm.

[0030] Specifically, such as Figure 3 As shown, the enclosure 100 is a heat-conducting enclosure capable of rapidly transferring heat. The refrigerant is liquid nitrogen. A handle 400 is provided on the side wall of the enclosure 100, and the handle 400 is fixedly connected to the outer side wall of the enclosure 100. There are two handles 400, located on opposite side walls of the enclosure 100.

[0031] Specifically, it also includes a fixing bracket 500, which can be fixedly installed in the freezing hole 110. The fixing bracket 500 is provided with fixing holes 510 for holding centrifuge tubes containing reagents. There are multiple fixing brackets 500, and the size of the fixing holes 510 on the multiple fixing brackets 500 increases sequentially to fix centrifuge tubes of various sizes to the freezing hole 110.

[0032] Specifically, such as Figure 4 and Figure 5 As shown, the cold connection part 111 is provided with a groove 112, the bottom surface of which is flush with the top surface of the housing 100. The fixing bracket 500 is provided with a protrusion 520 that can be engaged in the groove 112. The protrusion 520 prevents the fixing bracket 500 from falling into the freezing hole 110. When the fixing bracket 500 is fixedly installed in the freezing hole 110, the protrusion 520 is engaged in the groove 112, and the fixing bracket 500 is inserted into the inner cavity of the freezing hole 110. The outer side wall of the fixing bracket 500 is in contact with the inner side wall of the freezing hole 110.

[0033] Specifically, the mounting bracket 500 is provided with a removable part 530 that can extend to the outside of the freezing hole 110, and the removable part 530 is fixedly connected to the mounting bracket 500. The removable part 530 protrudes from the top surface of the cabinet 100, making it easier for the operator to grasp.

[0034] Specifically, there are multiple freezing holes 110, which are arranged in an array on the top surface of the housing 100.

[0035] The beneficial effects of this embodiment are as follows: The spray shield 300 intercepts splashed reagents, further preventing incompletely condensed reagents from vaporizing and splashing outwards during high-vacuum operation, thus preventing contamination inside the low-temperature freeze dryer. The spray shield 300 incorporates vent holes 310, allowing vaporized solid ice to escape from the freezing holes 110 along these holes. When reagent splashes, liquid and semi-solid reagents cannot pass through the vent holes 310, preventing further splashing. Multiple arrayed vent holes 310 on the spray shield 300 prevent splashed reagents from completely clogging the vent holes 310, effectively preventing sublimated solid ice from being trapped and unable to escape.

[0036] The chamber 100 is a heat-conducting chamber capable of rapid heat transfer. The reagent inside the freezing hole 110 can rapidly exchange heat with the refrigerant inside the chamber 100 through the side walls and bottom of the freezing hole 110. Liquid nitrogen has strong cooling capacity, stable chemical form, and is non-toxic and has good fluidity. Choosing liquid nitrogen as the refrigerant allows for rapid cooling of the reagent inside the freezing hole 110. Furthermore, after injection, liquid nitrogen can quickly envelop the freezing hole 110, resulting in even faster heat exchange. With the handle 400 installed, operators can move the chamber 100 using the handle, avoiding direct contact with the outer surface of the chamber 100 and reducing the risk of frostbite.

[0037] The holder 500 allows centrifuge tubes of various sizes to be stably placed within the freezing ports 110. Various models of holders are available, each with different hole sizes, allowing for selection of the appropriate holder to secure the centrifuge tubes within the freezing ports. The removal part 530 facilitates easy removal of the holder 500 from the freezing ports 110. Multiple freezing ports 110 enable simultaneous freezing and condensation of more reagents, further improving the freezing and condensation efficiency.

[0038] Example 3 This embodiment is a third embodiment of a rapid freezing loading device for a vacuum freeze-drying system. The difference between this embodiment and embodiment two is that the structure of the vent 310 is different.

[0039] Specifically, such as Figures 7-9 As shown, the blowout cover 300 includes a side wall 320, a top surface 330, and a middle surface 340. The top surface 330 and the middle surface 340 are parallel and both are fixedly connected to the side wall 320. The side wall 320 is detachably connected to the freezing hole 110. The vent hole 310 includes a first hole 311 located on the top surface 330 and a second hole located on the middle surface 340. On a projection plane parallel to the top surface 330, the projection of the first hole 311 and the projection of the second hole do not coincide.

[0040] The working principle or process of this embodiment is as follows: The spray shield 300 has two surfaces: a top surface 330 and a middle surface 340. The holes on the two surfaces together form a vent 310. The projections of the first hole 311 and the second hole do not coincide, that is, the first hole 311 and the second hole are misaligned. When the reagent splashes, the actual splash passes through the second hole and continues to move forward before being intercepted by the top surface 330, while the sublimated water vapor passes through the first hole 311 and the second hole in turn and escapes outward.

[0041] The beneficial effects of this embodiment are as follows: Compared with the structure of the vent 310 in Example 2, the vent 310 in this example can be set to a larger size, which can further reduce the probability of the vent 310 being blocked by splashed reagents.

[0042] The other technical features, working principles, and beneficial effects of this embodiment are the same as those of Embodiment 2.

[0043] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A rapid freeze loading device for a vacuum freeze drying system, characterized by, The device includes a housing (100) and a refrigerant. The housing (100) has a freezing hole (110) for storing reagents to be freeze-dried. The outer surface of the housing (100) has a filling port (120) that communicates with the inner cavity of the housing (100). The filling port (120) has a locking cap (200) that is detachably connected to the filling port (120). The refrigerant can be injected into the inner cavity of the housing (100) through the filling port (120).

2. A rapid freeze loading device for a vacuum freeze drying system as claimed in claim 1, wherein, It also includes a spray shield (300) to prevent the reagent to be freeze-dried from splashing, the spray shield (300) being detachably connected to the freezing hole (110) and the spray shield (300) having a vent hole (310) for gas to pass through.

3. A rapid freeze loading device for a vacuum freeze drying system according to claim 2, wherein, There are multiple vent holes (310), and the multiple vent holes (310) are arranged in an array on the blowout cover (300). The diameter of the vent holes (310) is 0.5mm-2.5mm.

4. A rapid freeze loading device for a vacuum freeze drying system as claimed in claim 2, wherein, The blowout preventer (300) includes a side wall (320), a top surface (330), and a middle surface (340). The top surface (330) and the middle surface (340) are parallel and fixedly connected to the side wall (320). The side wall (320) is detachably connected to the freezing hole (110). The vent (310) includes a first hole (311) located on the top surface (330) and a second hole (312) located on the middle surface (340). On a projection plane parallel to the top surface (330), the projection of the first hole (311) and the projection of the second hole (312) do not coincide.

5. A rapid freezing loading device for a vacuum freeze-drying system according to claim 1, characterized in that, The enclosure (100) is a heat-conducting enclosure (100) that can quickly transfer heat.

6. A rapid freeze loading device for a vacuum freeze drying system as claimed in claim 5, wherein, The refrigerant is liquid nitrogen.

7. A rapid freezing loading device for a vacuum freeze-drying system according to claim 6, characterized in that, The box (100) has a handle (400) on its side wall, and the handle (400) is fixedly connected to the outer side wall of the box (100).

8. A rapid freezing loading device for a vacuum freeze-drying system according to claim 1, characterized in that, It also includes a fixing bracket (500), which can be fixedly installed in the freezing hole (110). The fixing bracket (500) is provided with fixing holes (510) for holding centrifuge tubes containing reagents. There are multiple fixing brackets (500), and the size of the fixing holes (510) on the multiple fixing brackets (500) increases sequentially to fix centrifuge tubes of various sizes to the freezing hole (110).

9. A rapid freezing loading device for a vacuum freeze-drying system according to claim 8, characterized in that, The mounting bracket (500) is provided with a take-up part (530) that can extend to the outside of the freezing hole (110), and the take-up part (530) is fixedly connected to the mounting bracket (500).

10. A rapid freezing loading device for a vacuum freeze-drying system according to claim 1, characterized in that, There are multiple freezing holes (110), and the multiple freezing holes (110) are arranged in an array on the top surface of the housing (100).

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