A high-density multi-mesh deep cryogenic gas phase storage device

Abstract

The utility model relates to the storage technical field, and disclose a kind of high-density multi-net hole deep cryogenic gas phase storage device, comprising: upper cabin, liquid nitrogen tank is equipped in the lower of upper cabin, transfer case, liquid nitrogen machine and transfer case jacking mechanism, the top of transfer case is equipped with transfer case heat preservation cover;Upper cabin is equipped with cabin heat preservation cover, first board frame transfer tooling, gripper, servo motor, pinion and movement module in, lower installation bottom scanning device, containing camera and code reader;Large gear is installed on the circumference of liquid nitrogen tank, and aluminum disc is installed inside, and aluminum pipe, center rod and temperature rod are added to bottom end;Surface is equipped with outer frame, and Stirling loop siphon pipe cold screen is additionally provided outside, containing Stirling refrigerator, siphon pipe heat exchange cavity, siphon pipe and vacuum jacket, and siphon pipe heat exchange cavity is below cold head;The device can accurately position transfer sample, improve information efficiency, reduce liquid nitrogen consumption, improve sample storage density, meet large-scale storage demand.

Description

Technical Field

[0001] This utility model relates to the field of storage technology, specifically to a high-density multi-mesh deep low-temperature vapor phase storage device. Background Technology

[0002] Long-term preservation of biological samples is a core requirement for life science research, clinical medical translation, and biobank construction. Cryogenic vapor phase storage technology has become the mainstream technology for long-term preservation of biological samples due to its advantages in avoiding cross-contamination between samples and preventing sample tubes from breaking due to liquid nitrogen seepage. This technology maintains samples in a cryogenic range by constructing a low-temperature nitrogen environment formed by liquid nitrogen evaporation, thereby ensuring the activity of biological samples such as cells and tissues. It is widely used in sample storage scenarios in medical institutions, research institutes, and biotechnology companies.

[0003] Existing cryogenic vapor phase storage devices suffer from significant defects in structural design and functional implementation, making it difficult to meet the requirements of high efficiency, low consumption, and high density storage. Firstly, existing devices often employ simple mechanical transmission structures for canister lid positioning and sample transfer, which are prone to positioning deviations during canister lid rotation. This makes it difficult to accurately align with the target storage location during sample retrieval. Furthermore, sample information reading relies on scanning individual tubes one by one, resulting in a significant reduction in sample retrieval efficiency. Secondly, the liquid nitrogen used in existing devices evaporates in the cryogenic environment and is typically continuously replenished through external liquid nitrogen pipelines. This not only leads to high daily liquid nitrogen consumption but also increases the safety hazard due to the risk of leakage during pipeline filling. Therefore, a high-density, multi-mesh cryogenic vapor phase storage device is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a high-density, multi-mesh, deep cryogenic vapor phase storage device to solve the aforementioned technical problem of significantly reduced sample storage and retrieval efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-density multi-mesh deep cryogenic vapor storage device, comprising: The upper compartment, and the liquid nitrogen tank, transfer box, liquid nitrogen generator assembly and transfer box lifting mechanism located at the lower part of the upper compartment. The transfer box lifting mechanism includes a moving door and a synchronous belt conveyor mechanism, and the opening of the transfer box is equipped with a transfer box insulation cover. The upper compartment is equipped with an insulated cover, a first plate frame transfer fixture, a gripper assembly, a servo motor, a can lid lifting assembly, a pinion gear, and a motion module. The motion module includes a linear motor. The gripper assembly and the suction head assembly are respectively connected to the corresponding parts of the motion module. The center of the pinion gear is coaxially connected to the rotating end of the servo motor. A bottom scanning device is installed on the lower surface of the upper compartment. The bottom scanning device includes a camera and a barcode reader. The camera is located on the upper surface of the barcode reader. The insulated cover is located at the opening of the upper compartment. A canister lid is installed at the mouth of the liquid nitrogen tank, and a large gear is installed on the circumference of the canister lid. The large gear meshes with a small gear. A canister lid insulation cover and a long strip top cover are respectively installed on the top of the canister lid. An aluminum plate is installed in the inner cavity of the liquid nitrogen tank, and a second plate frame transfer fixture is added above the aluminum plate. The upper surface of the aluminum plate is evenly opened with mesh holes, and an aluminum tube, a central support rod and a temperature sensor fixing rod are respectively added to the bottom of the aluminum plate. The aluminum tube and the temperature sensor fixing rod pass through the mesh holes of the aluminum plate for fixation. The outer frame is square in shape and is located at the lower part of the upper compartment. A Stirling loop siphon cold screen is added to the outside of the liquid nitrogen tank. The Stirling loop siphon cold screen includes a Stirling refrigerator, a siphon heat exchange chamber, a siphon and a siphon vacuum sleeve. The siphon heat exchange chamber is located below the cold head of the Stirling refrigerator, and the siphon extends to the aluminum plate through the siphon vacuum sleeve.

[0006] Sample storage process After the equipment receives the storage task, the movable door opens, the synchronous belt conveyor extends, and the operator places the transfer box containing the sample on the synchronous belt conveyor; the synchronous belt conveyor drives the transfer box to retract to the designated position, and the transfer box lifting mechanism drives the transfer box to a position that matches the opening of the upper compartment. The PLC-controlled motion module drives the gripper assembly to move. The gripper assembly removes the insulated cover of the compartment and stores it in the designated location. Then, the gripper assembly removes the insulated cover of the transfer box and takes out the cryopreservation box from the transfer box, placing the cryopreservation box on the first plate frame transfer fixture. The bottom scanning device's barcode reader reads the QR code information of the sample cryopreservation tubes on the cryopreservation box, with the camera assisting in the recognition; after scanning, the motion module controlled by the PLC drives the gripper assembly to move, and the gripper assembly removes the lid insulation cover from the top of the lid and stores the lid insulation cover in the designated location. The can lid lifting assembly lifts the can lid upwards to a specified height; the servo motor drives the pinion to rotate, the pinion drives the meshing large gear to rotate, and the large gear drives the can lid to rotate to the position corresponding to the target aluminum tube. The PLC-controlled motion module drives the gripper assembly to place the cryopreservation box onto the second plate frame transfer fixture above the aluminum tray. The PLC-controlled motion module drives the suction head assembly to move. The suction head assembly picks up the sample cryopreservation tube from the cryopreservation box on the second plate frame transfer fixture and puts the sample cryopreservation tube into the target aluminum tube. After the sample is stored, the motion module drives the suction head assembly to reset; the PLC controls the motion module to drive the gripper assembly to move, the gripper assembly takes the cryopreservation box from the top of the transfer fixture in the second plate rack and puts it back into the transfer box, then the gripper assembly closes the long strip cover on the top of the can lid, and then closes the can lid insulation cover on the top of the can lid. The PLC-controlled motion module moves the gripper assembly, which closes the insulation cover of the upper compartment to the opening of the upper compartment. The transfer box lifting mechanism lowers the transfer box onto the synchronous belt conveyor, which then extends the transfer box. The transfer box is then manually removed, the movable door closes, and the storage process ends. Sample collection process After the equipment receives the pipe retrieval task, the movable door opens, the synchronous belt conveyor extends, and the operator places the empty transfer box on the synchronous belt conveyor; the synchronous belt conveyor drives the transfer box to retract to the designated position, and the transfer box lifting mechanism drives the transfer box to a position that matches the opening of the upper compartment. The PLC-controlled motion module drives the gripper assembly to move, and the gripper assembly removes the compartment insulation cover and stores it in the designated location; then the gripper assembly removes the tank cover insulation cover and the long strip cover from the top of the tank cover and stores them in the designated locations respectively. The can lid lifting assembly lifts the can lid upwards to a specified height; the servo motor drives the pinion to rotate, the pinion drives the meshing large gear to rotate, and the large gear drives the can lid to rotate to the position corresponding to the target aluminum tube. The motion module drives the suction head assembly to move, and the suction head assembly picks up the sample cryopreservation tube from the target aluminum tube and puts the sample cryopreservation tube into the cryopreservation box; the bottom scanning device's barcode reader reads and verifies the sample cryopreservation tube's QR code information on the cryopreservation box, and the camera assists in the recognition. After the sample is picked up and placed, the motion module drives the suction head assembly to reset; the PLC controls the motion module to move the gripper assembly, the gripper assembly puts the cryopreservation box back into the transport box, and then the gripper assembly closes the long strip cover on the top of the can lid, and then closes the can lid insulation cover on the top of the can lid. The PLC-controlled motion module moves the gripper assembly, which closes the insulation cover of the upper compartment to the opening. The transfer box lifting mechanism lowers the transfer box onto the synchronous belt conveyor, which then extends the transfer box. The transfer box is then manually removed, the moving door closes, and the pipe removal process ends.

[0007] Preferably, a mounting plate is added below the synchronous belt conveyor mechanism, and a custom pin is connected above the aluminum disc. The second plate frame transfer fixture is connected to the top of the aluminum disc via the custom pin. Fixing the second plate frame transfer fixture to the top of the aluminum disc with the custom pin effectively prevents displacement of the second plate frame transfer fixture on the aluminum disc, ensuring a stable relative position between the second plate frame transfer fixture and the aluminum disc, and guaranteeing the accuracy of subsequent operations. The mounting plate added below the synchronous belt conveyor mechanism enhances the stability of the synchronous belt conveyor mechanism installation, reduces shaking during operation, and improves the reliability of the synchronous belt conveyor mechanism's conveying operation.

[0008] Preferably, the upper compartment has separate storage areas for insulated transfer box covers and insulated compartment covers. The shapes of the insulated transfer box covers and their respective storage areas correspond, as do the shapes of the insulated compartment covers. This correspondence between the insulated transfer box covers and their respective storage areas allows for quick and easy placement of the insulated covers, preventing loss or damage due to haphazard placement. It also keeps items on the upper compartment surface organized, improving the efficiency of space utilization and facilitating quick retrieval of the insulated transfer box covers and insulated compartment covers by staff.

[0009] Preferably, the aluminum disc is a perforated mesh design, and an annular temperature-conducting protrusion is added to the outer side of the mesh. The inner side of the annular temperature-conducting protrusion is in contact with the outer surface of the aluminum tube. The aluminum disc adopts a perforated mesh design, combined with the annular temperature-conducting protrusion on the outer side of the mesh, and the inner side of the annular temperature-conducting protrusion is in contact with the outer surface of the aluminum tube.

[0010] Preferably, the lower surface of the can lid has an annular sealing groove, and an EPDM sealing ring is embedded in the inner cavity of the annular sealing groove. The height of the EPDM sealing ring is slightly higher than the annular sealing groove. The embedding of the EPDM sealing ring in the annular sealing groove on the lower surface of the can lid, with the EPDM sealing ring slightly higher than the annular sealing groove, effectively enhances the sealing performance of the can lid, solves the sealing failure problem caused by the shrinkage of the sealing element in existing structures, reduces the leakage of cold air from the can, and reduces the probability of external moisture intruding into the can, preventing moisture intrusion and the formation of frost that could affect related transmission components, thus ensuring the stability of the internal environment of the can.

[0011] Compared with the prior art, this utility model provides a high-density multi-mesh deep cryogenic vapor storage device, which has the following beneficial effects: This high-density, multi-mesh, deep cryogenic vapor phase storage device utilizes a servo motor-driven pinion gear that meshes with a large gear on the canister lid, forming a high-precision gear ring transmission structure. Combined with an integrated linear motor motion module, gripper assembly, and suction head assembly, it achieves precise positioning of the canister lid rotation and stable sample transport, effectively solving the sample positioning deviation problem of existing equipment. Simultaneously, a bottom-scanning device integrated with a camera and barcode reader on the lower surface of the upper chamber enables rapid scanning of the entire sample plate, replacing the traditional single-tube scanning method, significantly improving sample information reading efficiency and shortening the sample storage and retrieval cycle. The external Stirling loop siphon cold shield of the liquid nitrogen tank, through the cooperation of the Stirling refrigerator cold head and the siphon heat exchange chamber, uses the phase change cycle of the working fluid to transfer the cooling energy to the siphon, so that the liquid nitrogen evaporates and is reliquefied and recovered, which greatly reduces the consumption of liquid nitrogen and avoids the safety hazards of existing equipment that relies on pipelines to add liquid nitrogen. The internal cavity of the liquid nitrogen tank adopts a structural design with high-density aluminum disks, aluminum tubes and central support rods to achieve physical isolation storage of samples. Compared with traditional cryopreservation box storage methods, it significantly improves the sample storage density and meets the needs of large-scale sample storage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the upper cabin cavity structure of this utility model; Figure 3 This is a schematic diagram of the lower surface structure of the upper compartment of this utility model; Figure 4 This is a schematic diagram of the liquid nitrogen tank and its connection structure of this utility model; Figure 5 This is a schematic diagram of the aluminum disc and its connection structure of the present invention; Figure 6 This is a schematic diagram of the custom pin and its connection structure for this utility model; Figure 7 This is a schematic diagram of the motion module structure of this utility model; Figure 8 This is a schematic diagram of the camera and its connection structure according to the present invention; Figure 9 This is a schematic diagram of the heat-insulating cover for the transfer box and its connection structure of this utility model; Figure 10 This is a schematic diagram of the movable door and its connection structure of this utility model.

[0013] In the diagram: 1. Upper compartment; 2. Liquid nitrogen tank; 3. Transfer box; 4. Liquid nitrogen generator assembly; 5. First plate rack transfer fixture; 6. Second plate rack transfer fixture; 7. Tank lid lifting assembly; 8. Bottom sweeping device; 9. Compartment insulation cover; 10. Transfer box insulation cover storage area; 11. Compartment insulation cover storage area; 12. Grip assembly; 13. Linear motor; 14. Suction head assembly; 15. Motion module; 16. Pinion gear; 17. Servo motor; 18. Stirling refrigerator; 19. 19. Siphon heat exchange chamber; 20. Siphon tube; 21. Siphon vacuum sleeve; 22. Can lid insulation cover; 23. Long strip top cover; 24. Can lid; 25. Large gear; 26. Outer frame; 27. Aluminum disc; 28. Aluminum tube; 29. ​​Central support rod; 30. Temperature sensor fixing rod; 31. Custom pin; 32. Camera; 33. Code reader; 34. Transfer box insulation cover; 35. Transfer box lifting mechanism; 36. Sliding door; 37. Synchronous belt conveyor mechanism; 38. Mounting plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] This utility model provides a technical solution: a high-density multi-mesh deep cryogenic vapor storage device, comprising: (See details) Figures 1-10 The upper compartment 1, and the liquid nitrogen tank 2, transfer box 3, liquid nitrogen generator assembly 4 and transfer box lifting mechanism 34 located at the lower part of the upper compartment 1. The transfer box lifting mechanism 34 includes a moving door 35 and a synchronous belt conveyor 36, and the opening of the transfer box 3 is provided with a transfer box insulation cover 33. The upper chamber 1 is equipped with a chamber insulation cover 8, a first plate frame transfer fixture 5, a gripper assembly 11, a servo motor 16, a can lid lifting assembly 6, a pinion 15, and a motion module 14. The motion module 14 includes a linear motor 12. The gripper assembly 11 and the suction head assembly 13 are respectively connected to the corresponding positions of the motion module 14. The center of the pinion 15 is coaxially connected to the rotating end of the servo motor 16. A bottom scanning device 7 is installed on the lower surface of the upper chamber 1. The bottom scanning device 7 includes a camera 31 and a barcode reader 32. The camera 31 is set on the upper surface of the barcode reader 32. The chamber insulation cover 8 is set at the opening of the upper chamber 1. A canister lid 23 is provided at the mouth of the liquid nitrogen tank 2, and a large gear 24 is installed on the circumferential surface of the canister lid 23. The large gear 24 meshes with the small gear 15. A canister lid insulation cover 21 and a long strip cover 22 are respectively installed on the top of the canister lid 23. An aluminum plate 26 is installed in the inner cavity of the liquid nitrogen tank 2, and a second plate frame transfer fixture 51 is added above the aluminum plate 26. The upper surface of the aluminum plate 26 is evenly provided with mesh holes, and an aluminum tube 27, a central support rod 28 and a temperature sensor fixing rod 29 are respectively added to the bottom of the aluminum plate 26. The aluminum tube 27 and the temperature sensor fixing rod 29 pass through the mesh holes of the aluminum plate 26 for fixation. The outer frame 25 is square in shape and is located at the lower part of the upper compartment 1. A Stirling loop siphon cold screen is added to the outside of the liquid nitrogen tank 2. The Stirling loop siphon cold screen includes a Stirling refrigerator 17, a siphon heat exchange chamber 18, a siphon 19 and a siphon vacuum sleeve 20. The siphon heat exchange chamber 18 is located below the cold head of the Stirling refrigerator 17, and the siphon 19 extends to the aluminum plate 26 through the siphon vacuum sleeve 20.

[0016] Liquid nitrogen recovery is achieved through a Stirling loop siphon cold shield. When the Stirling refrigerator 17 is working, its cold head transfers cold energy to the siphon tube 19 through the siphon tube heat exchange chamber 18. Under the protection of the siphon tube vacuum sleeve 20, the siphon tube 19 transfers the cold energy to the periphery of the aluminum plate 26, which can re-liquefy the liquid nitrogen vaporized in the upper part of the liquid nitrogen tank 2, reducing liquid nitrogen evaporation loss. The optional liquid nitrogen generator component 4 can replace the traditional liquid nitrogen pipeline filling method, avoiding the safety hazards and liquid nitrogen waste of pipeline filling, and solving the problems of large liquid nitrogen consumption and high filling risk in the existing technology. The aluminum tray 26, together with the aluminum tube 27, forms a high-density multi-mesh storage structure. The sample cryopreservation tubes are physically isolated through the aluminum tube 27 to avoid cross-contamination between samples, breaking through the limitation of limited storage density in traditional cryopreservation boxes. The aluminum tray 26, together with the central support rod 28 and the temperature sensor fixing rod 29, not only ensures the stability of the storage structure, but also allows the temperature sensor fixing rod 29 to assist in monitoring the temperature inside the container, further ensuring the activity of biological samples. The transmission structure, driven by the servo motor 16, drives the pinion 15 and the pinion 15 drives the large gear 24. Combined with PLC control, the can lid 23 can be accurately positioned to the target aluminum tube 27. The PLC-controlled motion module 14 drives the gripper assembly 11 and the suction head assembly 13 to move stably, ensuring the accuracy of sample picking and placing. The barcode reader 32 of the bottom scanning device 7 works with the camera 31 to scan the entire board, eliminating the need to identify sample information one by one, significantly improving scanning and storage efficiency, and solving the problems of insufficient sample positioning accuracy and low operation efficiency in the existing technology. The insulated cover 21 at the top of the canister lid 23, together with the long strip cover 22, the insulated cover 8 at the opening of the upper chamber 1, and the insulated cover 33 of the transfer box 3, form a multi-stage insulation structure, which can reduce the intrusion of external heat. The canister lid 23 is stably opened and closed through the canister lid lifting component 6, and with the precise positioning of the gear ring drive, it ensures the sealing compatibility between the canister lid 23 and the opening of the liquid nitrogen tank 2, continuously maintaining the deep cryogenic storage environment inside the liquid nitrogen tank 2, and meeting the long-term preservation requirements of biological samples.

[0017] Please see Figure 5 , Figure 6 and Figure 10 A mounting plate 37 is added below the synchronous belt conveyor mechanism 36, and a custom pin 30 is connected above the aluminum disc 26. The second plate frame transfer fixture 51 is connected to the top of the aluminum disc 26 via the custom pin 30. The second plate frame transfer fixture 51 is fixed above the aluminum disc 26 by the custom pin 30. The mounting plate 37 added below the synchronous belt conveyor mechanism 36 provides installation support for the synchronous belt conveyor mechanism 36, ensuring that the synchronous belt conveyor mechanism 36 maintains a stable position during operation.

[0018] Please see Figure 2 and Figure 9 The upper compartment 1 has two storage areas: a transfer box insulated cover storage area 9 and a compartment insulated cover storage area 10. The shape of the transfer box insulated cover 33 corresponds to that of the transfer box insulated cover storage area 9, and the shape of the compartment insulated cover 8 corresponds to that of the compartment insulated cover storage area 10. The transfer box insulated cover 33 is positioned accurately in the transfer box insulated cover storage area 9 by its shape correspondence with that of the transfer box insulated cover storage area 9; the compartment insulated cover 8 is positioned accurately in the compartment insulated cover storage area 10 by its shape correspondence with that of the compartment insulated cover storage area 10.

[0019] Please see Figure 5 The aluminum disc 26 is a perforated mesh design, and an annular temperature-conducting protrusion is added to the outside of the mesh of the aluminum disc 26. The inner side of the annular temperature-conducting protrusion is in contact with the outer surface of the aluminum tube 27.

[0020] Please see Figure 4 The lower surface of the can lid 23 has an annular sealing groove, and an EPDM sealing ring is embedded in the inner cavity of the annular sealing groove. The height of the EPDM sealing ring is slightly higher than the annular sealing groove. The EPDM sealing ring is fixed in the annular sealing groove by being embedded in the inner cavity of the annular sealing groove on the lower surface of the can lid 23. When the can lid 23 is closed, the EPDM sealing ring, due to its slightly higher height than the annular sealing groove, forms a tight fit with the corresponding sealing surface.

[0021] This solution: Sample storage process After the equipment receives the storage task, the movable door 35 opens, and the synchronous belt conveyor 36 extends under the support of the mounting plate 37 below. The manual person places the transfer box 3 containing the sample on the synchronous belt conveyor 36. The synchronous belt conveyor 36 drives the transfer box 3 to retract to the designated position, and the transfer box lifting mechanism 34 drives the transfer box 3 to be lifted to a position that matches the opening of the upper compartment 1. The motion module 14 drives the gripper assembly 11 to move, the gripper assembly 11 removes the cabin insulation cover 8 and stores the cabin insulation cover 8 in the cabin insulation cover storage area 10; The gripper assembly 11 continues to move, removes the heat preservation cover 33 of the transfer box, and stores the heat preservation cover 33 of the transfer box in the heat preservation cover storage location 9 of the transfer box; then, the gripper assembly 11 takes out the cryopreservation box from the transfer box 3 and places the cryopreservation box on the first plate frame transfer fixture 5 which is fixed above the aluminum plate 26 by the custom pin 30. The barcode reader 32 of the bottom scanning device 7 reads the QR code information of the sample cryopreservation tube on the cryopreservation box, and the camera 31 assists in recognizing the sample information. After scanning the code, the motion module 14 drives the gripper assembly 11 to move, and the gripper assembly 11 removes the can lid insulation cover 21 from the top of the can lid 23 and stores the can lid insulation cover 21 in the designated location. The can lid lifting assembly 6 drives the can lid 23 to be lifted to a specified height. The servo motor 16 drives the pinion 15 to rotate. The pinion 15 drives the large gear 24 meshing with it to rotate. The large gear 24 drives the can lid 23 to rotate to the position corresponding to the target aluminum tube 27. The PLC controls the motion module 14 to move the gripper assembly 11 and place the cryopreservation box on the second plate frame transfer fixture 51 above the aluminum tray 26. The PLC controls the motion module 14 to move the suction head assembly 13. The suction head assembly 13 picks up the sample cryopreservation tube from the cryopreservation box on the second plate frame transfer fixture 51 and puts the sample cryopreservation tube into the target aluminum tube 27. At the same time, the Stirling refrigerator 17 starts to work, and its cold head transfers the cold energy to the siphon tube 19 through the siphon tube heat exchange chamber 18. Under the protection of the siphon tube vacuum sleeve 20, the siphon tube 19 transfers the cold energy to the periphery of the aluminum plate 26. After the sample is stored, the motion module 14 drives the suction head assembly 13 to reset; The motion module 14 drives the gripper assembly 11 to move. The gripper assembly 11 takes the cryopreservation box from the transfer fixture 51 of the second plate frame and puts it back into the transfer box 3. Then the gripper assembly 11 puts the long strip cover 22 on the top of the can lid 23, and then puts the can lid insulation cover 21 on the top of the can lid 23. The EPDM sealing ring in the annular sealing groove on the lower surface of the can lid 23 is slightly higher than the groove itself, and forms a tight fit with the corresponding sealing surface. The motion module 14 drives the gripper assembly 11 to move, and the gripper assembly 11 takes the cabin insulation cover 8 out of the cabin insulation cover storage location 10 and closes it at the opening of the upper cabin 1. The transfer box lifting mechanism 34 drives the transfer box 3 to descend onto the synchronous belt conveyor 36. The synchronous belt conveyor 36, supported by the mounting plate 37, drives the transfer box 3 to extend. The transfer box 3 is then manually removed, the sliding door 35 closes, and the storage process ends. Sample collection process After the equipment receives the pipe picking task, the movable door 35 opens, and the synchronous belt conveyor 36 extends under the support of the mounting plate 37 below. The empty transfer box 3 is placed on the synchronous belt conveyor 36 manually. The synchronous belt conveyor 36 drives the transfer box 3 to retract to the designated position, and the transfer box lifting mechanism 34 drives the transfer box 3 to be lifted to a position that matches the opening of the upper compartment 1. The motion module 14 drives the gripper assembly 11 to move, the gripper assembly 11 removes the cabin insulation cover 8 and stores the cabin insulation cover 8 in the cabin insulation cover storage area 10; The motion module 14 continues to drive the gripper assembly 11 to move. The gripper assembly 11 removes the can lid insulation cover 21 and the long strip cover 22 from the top of the can lid 23 and stores them in the designated positions respectively. The can lid lifting assembly 6 drives the can lid 23 to be lifted to a specified height. The servo motor 16 drives the pinion 15 to rotate. The pinion 15 drives the large gear 24 meshing with it to rotate. The large gear 24 drives the can lid 23 to rotate to the position corresponding to the target aluminum tube 27. The motion module 14 drives the suction head assembly 13 to move, and the suction head assembly 13 picks up the sample cryopreservation tube from the target aluminum tube 27 and puts the sample cryopreservation tube into the cryopreservation box. At the same time, the Stirling refrigerator 17 starts to work, and its cold head transfers the cold energy to the siphon tube 19 through the siphon tube heat exchange chamber 18. Under the protection of the siphon tube vacuum sleeve 20, the siphon tube 19 transfers the cold energy to the periphery of the aluminum plate 26. The barcode reader 32 of the bottom scanning device 7 reads and verifies the QR code information of the sample cryopreservation tube on the cryopreservation box, and the camera 31 assists in identifying the sample information. After the sample is picked up and placed, the motion module 14 drives the suction head assembly 13 to reset; The motion module 14 drives the gripper assembly 11 to move. The gripper assembly 11 puts the cryopreservation box back into the transfer box 3. Then, the gripper assembly 11 covers the top of the can lid 23 with the long strip cover 22, and then covers the top of the can lid 23 with the can lid insulation cover 21. The EPDM sealing ring in the annular sealing groove on the lower surface of the can lid 23 is slightly higher than the groove itself, and forms a tight fit with the corresponding sealing surface. The motion module 14 drives the gripper assembly 11 to move, and the gripper assembly 11 takes the cabin insulation cover 8 out of the cabin insulation cover storage location 10 and closes it at the opening of the upper cabin 1. The transfer box lifting mechanism 34 drives the transfer box 3 to descend onto the synchronous belt conveyor 36. The synchronous belt conveyor 36, supported by the mounting plate 37, drives the transfer box 3 to extend. The transfer box 3 is then manually removed, the moving door 35 closes, and the pipe removal process ends.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-density multi-mesh deep cryogenic vapor storage device, characterized in that, include: The upper compartment (1), and the liquid nitrogen tank (2), transfer box (3), liquid nitrogen generator assembly (4) and transfer box lifting mechanism (34) located at the lower part of the upper compartment (1). The transfer box lifting mechanism (34) includes a moving door (35) and a synchronous belt conveyor (36), and the opening of the transfer box (3) is provided with a transfer box insulation cover (33). The upper chamber (1) is equipped with a chamber insulation cover (8), a first plate frame transfer fixture (5), a gripper assembly (11), a servo motor (16), a can lid lifting assembly (6), a pinion (15), and a motion module (14). The motion module (14) includes a linear motor (12). The gripper assembly (11) and the suction head assembly (13) are respectively connected to the corresponding positions of the motion module (14). The center of the pinion (15) is coaxially connected to the rotating end of the servo motor (16). A bottom scanning device (7) is installed on the lower surface of the upper chamber (1). The bottom scanning device (7) includes a camera (31) and a barcode reader (32). The camera (31) is located on the upper surface of the barcode reader (32). The chamber insulation cover (8) is located at the opening of the upper chamber (1). A canister lid (23) is provided at the mouth of the liquid nitrogen tank (2), and a large gear (24) is installed on the circumferential surface of the canister lid (23). The large gear (24) meshes with the small gear (15), and a canister lid heat insulation cover (21) and a long strip cover (22) are respectively installed on the top of the canister lid (23). An aluminum plate (26) is installed in the inner cavity of the liquid nitrogen tank (2), and a second plate frame transfer fixture (51) is added above the aluminum plate (26). The upper surface of the aluminum plate (26) is evenly provided with mesh holes, and an aluminum tube (27), a central support rod (28) and a temperature sensor fixing rod (29) are respectively added to the bottom of the aluminum plate (26). The aluminum tube (27) and the temperature sensor fixing rod (29) pass through the mesh holes of the aluminum plate (26) for fixing. The outer frame (25) is square in shape and is located at the lower part of the upper compartment (1). A Stirling loop siphon cold screen is added to the outside of the liquid nitrogen tank (2). The Stirling loop siphon cold screen includes a Stirling refrigerator (17), a siphon heat exchange chamber (18), a siphon (19) and a siphon vacuum sleeve (20). The siphon heat exchange chamber (18) is located below the cold head of the Stirling refrigerator (17), and the siphon (19) extends to the aluminum plate (26) through the siphon vacuum sleeve (20).

2. The high-density multi-mesh deep cryogenic vapor storage device according to claim 1, characterized in that: An mounting plate (37) is added below the synchronous belt conveyor (36), and a custom pin (30) is connected above the aluminum disc (26). The second plate frame transfer fixture (51) is connected above the aluminum disc (26) by the custom pin (30).

3. The high-density multi-mesh deep cryogenic vapor storage device according to claim 1, characterized in that: The upper compartment (1) is provided with a transfer box insulation cover storage area (9) and a compartment insulation cover storage area (10). The transfer box insulation cover (33) corresponds to the shape of the transfer box insulation cover storage area (9), and the compartment insulation cover (8) corresponds to the shape of the compartment insulation cover storage area (10).

4. The high-density multi-mesh deep cryogenic vapor storage device according to claim 1, characterized in that: The aluminum disk (26) is a perforated mesh design, and an annular temperature-conducting protrusion is added to the outside of the mesh of the aluminum disk (26). The inner side of the annular temperature-conducting protrusion is in contact with the outer surface of the aluminum tube (27).

5. A high-density multi-mesh deep cryogenic vapor storage device according to claim 1, characterized in that: The lower surface of the can lid (23) is provided with an annular sealing groove, and an EPDM sealing ring is embedded in the inner cavity of the annular sealing groove. The height of the EPDM sealing ring is slightly higher than that of the annular sealing groove.

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