A liquid sample storage device

Abstract

This invention provides a liquid sample storage device that solves the problem of sample storage equipment colliding with the inner sample container when the outer sample container is accidentally dropped on the ground and rolls, causing a failure to protect the sample placed inside the inner container. The invention includes a spherical outer shell and an inner casing disposed inside the outer shell. The outer shell includes a detachably connected upper shell and lower shell. The top of the inner casing has a detachable test tube placement plate with several vertically perforated placement holes. Vertically arranged first connecting plates are fixed on both sides of a ring-shaped support plate. A rolling shock absorption mechanism is provided on the side of the first connecting plate facing the outer shell. The rolling shock absorption mechanism makes rolling contact with the inner wall of the outer shell. Even if accidentally dropped on the ground, this invention ensures that the inner casing will not collide with the outer shell during rolling motion and that the opening of the inner casing always faces upwards.

Description

Technical Field

[0001] This invention relates to the field of sample storage equipment technology, and in particular to a liquid sample storage device. Background Technology

[0002] Medical laboratory testing of samples is a crucial pathway for researching complex diseases and achieving medical breakthroughs. The accuracy of sample testing directly impacts diagnostic and differential diagnosis results. However, damage to samples during storage and transportation can lead to substandard samples, resulting in inaccurate test results and ultimately rendering the entire testing experiment unsuccessful.

[0003] The invention patent with publication number CN116692205A discloses a medical laboratory test sample storage device and its storage method, relating to the field of medical device technology. It includes a sample anti-shaking mechanism, comprising a sample outer box, a lifting slide plate slidably mounted on the sample outer box, a fixed block fixedly mounted on the sample outer box, a slide rod fixedly mounted on the lifting slide plate, the slide rod sliding on the fixed block, a slide plate spring fixedly mounted on the slide rod, the slide plate spring being connected to the fixed block, a main rotating shaft rotatably mounted on the lifting slide plate, a central rotating plate fixedly mounted on the main rotating shaft, a secondary rotating shaft rotatably mounted on the central rotating plate, a sample inner box fixedly mounted on the secondary rotating shaft, a test sample placed inside the sample inner box, and a monitoring component fixedly mounted on the sample inner box. Although the invention can protect the sample from damage by transferring the energy of the sample sliding in the storage device to the shaking of the storage device itself, the invention still has the following defects when in use: (1) Since the outer and inner boxes of the sample adopt a square box structure to meet the function of "automatically releasing the anti-shaking of the storage device when the lid is opened", the angle at which the inner box of the sample can rotate and tilt inside the outer box of the sample is greatly limited. When the outer box of the sample accidentally falls to the ground and rolls, there will be an impact between the outer box of the sample and the inner box of the sample, resulting in the failure of the protection of the sample placed in the inner box of the sample; (2) The inner box of the sample lacks protective measures to fix the test tube and prevent the rubber stopper at the test tube port from falling off when the test tube is impacted, making it difficult for the invention to meet the transportation protection requirements of test tubes containing liquid samples. Summary of the Invention

[0004] To address the problem in the prior art where, when the outer sample container of a sample storage device accidentally falls to the ground and rolls over, a collision occurs between the outer and inner sample containers, causing a failure to protect the sample placed inside the inner container, this invention proposes a liquid sample storage device.

[0005] The technical solution of the present invention is: a liquid sample storage device, comprising a spherical outer shell and an inner box disposed inside the outer shell;

[0006] The outer casing includes a detachably connected upper casing and a lower casing. The top of the upper casing is provided with a handle, and the bottom of the lower casing is provided with support legs.

[0007] The inner box is an open-top box structure. A ring-shaped support plate is fixedly installed on the top of the inner box. A detachable test tube placement plate is provided on the inner side of the ring-shaped support plate. The test tube placement plate has several open placement holes.

[0008] The left and right sides of the annular support plate are both fixed with vertically arranged first connecting plates, and the side of the first connecting plate facing the outer shell is provided with a rolling shock absorption mechanism.

[0009] The rolling damping mechanism includes an automatic telescopic rod, which is a spring telescopic rod that can extend and retract left and right. One end of the automatic telescopic rod is connected to the first connecting plate, and a rolling element is fixedly provided at the end of the automatic telescopic rod facing the outer shell. The rolling element makes rolling contact with the inner wall of the outer shell.

[0010] The top of the annular support plate is equipped with a removable cover.

[0011] Preferably, the rolling damping mechanism includes a vertically arranged U-shaped frame, which is fixedly mounted on the side of the first connecting plate facing the outer shell. The opening of the U-shaped frame faces the outer shell, and a slider that can move up and down is slidably connected to the side of the U-shaped frame facing the outer shell. Buffer springs are provided between the upper and lower sides of the slider and the upper and lower end plates of the U-shaped frame. The end of the automatic telescopic rod facing the first connecting plate is connected to the slider.

[0012] Preferably, the end of the automatic telescopic rod facing the first connecting plate is rotatably connected to the slider.

[0013] Preferably, the outer shell comprises, from the inside out, a spherical inner support layer, a fourth heat insulation layer, and a decorative layer;

[0014] Both the upper and lower shells have arc-shaped grooves on their inner walls. The grooves are located on the inner sidewall of the inner support layer. When the upper and lower shells are connected, the two grooves are connected to each other to form an annular groove. The rolling element rolls within the annular groove.

[0015] Preferably, the rolling element includes a fixed block fixedly disposed at one end of the automatic telescopic rod facing the outer casing, and a ball bearing is rotatably embedded on the side of the fixed block facing the outer casing, the ball bearing being rotatably disposed in an annular groove.

[0016] Preferably, a test tube is inserted into the placement hole, and an annular edge is provided at the top end of the test tube. The annular edge abuts against the test tube placement plate, and a rubber stopper for sealing is filled at the top end of the test tube.

[0017] A removable pressure bar is provided between the top of the rubber stopper and the cap.

[0018] Preferably, the pressure rod is a spring telescopic rod that can extend and retract vertically, and when the cover is connected to the annular support plate, the spring inside the pressure rod is in a compressed state.

[0019] Preferably, the inner chamber is fixedly equipped with a partition that can perform heat exchange. The partition separates the internal space of the inner chamber and forms a test tube placement space and a refrigerant storage space. The test tube placement space is located above the refrigerant storage space.

[0020] An injection pipe and a discharge pipe are fixedly installed on the partition. The upper ends of the injection pipe and the discharge pipe pass through the annular support plate. The upper ends of the injection pipe and the discharge pipe are equipped with removable plugs. The lower end of the discharge pipe extends to the bottom of the inner box. A solenoid valve and a suction pump are installed on the discharge pipe. The suction pump is located at the top of the partition.

[0021] The test tube placement space is equipped with a temperature sensor, which is connected to the controller. The outer surface of the outer shell is equipped with a display screen, which is connected to the controller. The controller is connected to the solenoid valve and the suction pump.

[0022] The first connecting plate is fixedly connected to a telescopic device that can extend and retract left and right on the side facing the outer shell. The movable end of the telescopic device is fixedly provided with a brake block. The telescopic device can push the brake block to the inner wall of the outer shell to fix the position of the inner box. The controller is connected to the telescopic device.

[0023] The bottom of the inner casing is equipped with a power supply box, which is electrically connected to the controller.

[0024] Preferably, the outer side of the inner box is wrapped with a first heat insulation layer, and the upper end of the first heat insulation layer is higher than the top of the partition.

[0025] The bottom of the annular support plate and the inner box, as well as the bottom of the test tube placement plate, are all provided with a second heat insulation layer, and the side wall of the test tube placement space is provided with a third heat insulation layer.

[0026] Preferably, the bottom of the inner enclosure has a hemispherical or arc-shaped structure, and the power supply box is located at the lowest point of the bottom of the inner enclosure.

[0027] The top of the cover is fixed with a slide rail extending in the left and right direction. Both ends of the slide rail extend to the left and right sides of the power box. A counterweight is slidably mounted on the slide rail. A positioning screw is threaded through the counterweight and connected to it. One end of the positioning screw can abut against the slide rail to fix the position of the counterweight.

[0028] The top of the cover is equipped with a levelness monitoring device.

[0029] Advantages of the present invention: Because the outer shell of the present invention adopts a spherical structure, during transportation, whether the outer shell shakes during normal transportation or rolls after being accidentally dropped on the ground, the inner box, through the rolling shock absorption mechanism and the rolling connection between the inner box and the outer shell, can ensure that the opening of the test tube inside the inner box always faces upwards, and the inner box will no longer collide with the outer shell. Combined with the horizontal shock absorption obtained from the automatic telescopic rod, the relative stability of the liquid sample inside the test tube is ensured. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the external main structure of Example 1;

[0032] Figure 2 for Figure 1 A schematic diagram of the internal main structure;

[0033] Figure 3 for Figure 2 A structural diagram of the inner casing and its components;

[0034] Figure 4 for Figure 3 A top-view structural diagram of the test tube placement plate;

[0035] Figure 5 for Figure 2 A schematic diagram of the rolling damping mechanism in the diagram;

[0036] Figure 6 for Figure 2 Enlarged view of the structure at point A in the image;

[0037] In the diagram, 1. Upper shell, 2. Lower shell, 3. Support leg, 4. Handle, 5. Inner box, 6. First insulation layer, 7. Annular support plate, 8. Test tube placement plate, 801. Placement hole, 9. Second insulation layer, 10. Test tube, 11. Rubber stopper, 12. Pressure rod, 13. Top pressure plate, 14. Cover, 15. First connecting plate, 16. Second connecting plate, 17. First screw, 18. Elastic pad, 19. Mounting base, 20. Connecting rod, 21. U-shaped frame, 22. Slider, 23. Buffer spring, 24. Automatic telescopic mechanism. 25. Rod, 26. Fixing block, 27. Ball bearing, 28. Controller, 29. Partition, 30. Discharge pipe, 31. Solenoid valve, 32. Suction pump, 33. Injection pipe, 34. Temperature sensor, 35. Third insulation layer, 36. Telescopic device, 37. Braking block, 48. Power supply box, 39. Slide rail, 40. Counterweight, 41. Positioning screw, 42. Levelness monitoring device, 43. Inner support layer, 44. Slide groove, 45. Insert plate head, 46. Fourth insulation layer, 47. Decorative layer, 48. Fixing screw, 49. Display screen. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1: A liquid sample storage device, such as Figure 1 and Figure 2 As shown, it includes a spherical outer shell and an inner box 5 disposed inside the outer shell.

[0040] The outer shell includes a detachably connected upper shell 1 and a lower shell 2. In this embodiment, the connection gap between the upper shell 1 and the lower shell 2 is located on the bisector of the outer shell, so that the inner box 5 can be removed from the outer shell for easy maintenance.

[0041] like Figure 6 As shown, the outer shell includes, from the inside out, a spherical inner support layer 42, a fourth heat insulation layer 45, and a decorative layer 46. The decorative layer 46 can be made of waterproof and elastic materials such as leather and rubber.

[0042] like Figure 2 and Figure 6 The lower end face of the inner support layer 42 of the upper shell 1 is provided with an annular slot, and the upper end face of the inner support layer 42 of the lower shell 2 is provided with an annular insertion head 44, which is movably inserted into the slot. To fix the insertion head 44 in the slot, as follows... Figure 6As shown, a fixing screw 47, which is threadedly connected to the insert head 44, is provided inside the fourth heat insulation layer 45 and the decorative layer 46 of the upper shell 1.

[0043] Both the upper shell 1 and the lower shell 2 have arc-shaped grooves 43 on their inner walls. The grooves 43 are located on the inner sidewall of the inner support layer 42. When the upper shell 1 and the lower shell 2 are connected, the two grooves 43 are connected to each other to form an annular groove connected end to end.

[0044] The upper housing 1 has a handle 4 at the top, and the lower housing 2 has a support leg 3 at the bottom. The outer surface of the lower housing 2 has a display screen 48.

[0045] like Figure 3 As shown, the inner box 5 is an open-top box structure. A ring-shaped support plate 7 is fixedly installed on the top of the inner box 5. A stepped support ring is provided on the inner wall of the ring-shaped support plate 7, and a test tube placement plate 8 is placed on the support ring. Figure 4 As shown, the test tube placement plate 8 has several through holes 801. Test tubes 10 are inserted into the placement holes 801. The top end of each test tube 10 has an annular edge that abuts against the test tube placement plate 8. The top end of each test tube 10 is filled with a sealing rubber stopper 11. The annular support plate 7 is detachably connected to the test tube placement plate 8, allowing for the replacement of the appropriate test tube placement plate 8 when storing test tubes of different shapes.

[0046] The annular support plate 7 has vertically arranged first connecting plates 15 fixed on both its left and right sides. The first connecting plates 15 are as follows: Figure 3 The L-shaped plate structure shown has a rolling damping mechanism on the side of the first connecting plate 15 facing the outer shell.

[0047] To achieve shock absorption of the inner casing 5 in the vertical and horizontal directions, and to ensure that the inner casing 5 remains relatively stationary when the outer casing accidentally falls to the ground and rolls, in this embodiment, as follows: Figure 3 and Figure 5 As shown, the rolling damping mechanism includes a vertically arranged U-shaped frame 21. A connecting rod 20 is fixedly provided on the side of the U-shaped frame 21 facing the first connecting plate 15. One end of the connecting rod 20 facing the first connecting plate 15 is fixedly provided on the mounting base 19. The mounting base 19 is fixedly provided on the first connecting plate 15.

[0048] The opening of the U-shaped frame 21 faces the outer shell. A slider 22, capable of moving up and down, is slidably connected to the side of the U-shaped frame 21 facing the outer shell. In this embodiment, the sliding connection structure between the slider 22 and the U-shaped frame 21 is a dovetail groove and dovetail block sliding connection structure. Buffer springs 23 are provided between the upper and lower sides of the slider 22 and the upper and lower end plates of the U-shaped frame 21. The side of the slider 22 facing the outer shell is rotatably connected to one end of the automatic telescopic rod 24. The automatic telescopic rod 24 is a spring telescopic rod capable of extending and retracting left and right. One end of the automatic telescopic rod 24 is connected to the first connecting plate 15. A rolling element is fixedly provided at the end of the automatic telescopic rod 24 facing the outer shell, and the rolling element rolls in contact with the inner wall of the outer shell.

[0049] In this embodiment, as Figure 5 As shown, the rolling element includes a fixing block 25 fixedly disposed at one end of the automatic telescopic rod 24 facing the outer shell, and a ball bearing 26 is rolled and embedded on the side of the fixing block 25 facing the outer shell. The ball bearing 26 is rolled and disposed in an annular groove formed by two interconnected slide grooves 43.

[0050] The top of the annular support plate 7 is provided with a removable cover 14, specifically, as follows: Figure 3 As shown, a second connecting plate 16 corresponding to the first connecting plate 15 is fixedly provided on the outer side of the cover 14. A first screw 17 threadedly connected to the top plate of the first connecting plate 15 is provided on the second connecting plate 16.

[0051] To improve the sealing at the connection between the cover 14 and the annular support plate 7, such as Figure 3 As shown, an annular elastic pad 18 is embedded in the annular support plate 7, and the lower end of the cover 14 is pressed into the elastic pad 18 by the first screw 17.

[0052] To prevent the rubber stopper 11 from falling off due to the impact of the liquid sample inside the test tube, thus causing the liquid sample to spill into the inner chamber 5, such as... Figure 3 As shown, a detachable pressure rod 12 is provided between the top of the rubber stopper 11 and the cap 14. Both the upper and lower ends of the pressure rod 12 are provided with pressure plates 13 to increase its pressure area. In order to limit and dampen the displacement of the test tube 10 when it is subjected to a force that moves up and down relative to the test tube placement plate 8, and to prevent the rubber stopper 11 from being pushed too far into the test tube 10 by the pressure rod 12 and breaking the opening of the test tube 10, in this embodiment, the pressure rod 12 is a spring telescopic rod that can extend and retract up and down, and when the cap 14 is connected to the annular support plate 7, the spring in the pressure rod 12 is in a compressed state.

[0053] In order to refrigerate liquid samples, such as Figure 3As shown, the inner box 5 is fixedly provided with a partition 28 that can perform heat exchange. The partition 28 separates the internal space of the inner box 5 and forms a test tube placement space and a refrigerant storage space. The test tube placement space is located above the refrigerant storage space.

[0054] An injection pipe 32 and a discharge pipe 29 are fixedly installed on the partition 28. The upper ends of the injection pipe 32 and the discharge pipe 29 both pass through the annular support plate 7. The upper ends of the injection pipe 32 and the discharge pipe 29 are provided with removable plugs. The lower end of the discharge pipe 29 extends to the bottom of the inner box 5. A solenoid valve 30 and a suction pump 31 are provided on the discharge pipe 29. The suction pump 31 is located at the top of the partition 28.

[0055] A temperature sensor 33 is installed inside the test tube placement space. The temperature sensor 33 is connected to the controller 27. The display screen 48 is connected to the controller 27. The controller 27 is connected to the solenoid valve 30 and the suction pump 31.

[0056] In order to fix the position of the inner box 5 when placing or removing test tube 10, such as Figure 3 As shown, a telescopic device 35 capable of extending and retracting left and right is fixedly connected to the side of the first connecting plate 15 facing the outer shell. A brake block 36 is fixedly provided at the movable end of the telescopic device 35. In this embodiment, the telescopic device 35 is an electric push rod, but in other embodiments, a cylinder can be used instead. The brake block 36 is made of elastic rubber with high friction. The telescopic device 35 can push the brake block 36 to the inner wall of the outer shell to fix the position of the inner box 5. The controller 27 is connected to the telescopic device 35 for control.

[0057] For refrigeration effect, such as Figure 3 As shown, the outer side of the inner box 5 is wrapped with a first heat insulation layer 6, the upper end of the first heat insulation layer 6 is higher than the top of the partition 28, the bottom of the annular support plate 7 and the inner box 5, and the bottom of the test tube placement plate 8 are all provided with a second heat insulation layer 9, and a third heat insulation layer 34 is provided on the side wall of the test tube placement space.

[0058] In order to keep the inner box 5 horizontal without external force, the bottom of the inner box 5 is a hemispherical structure. The lowest point of the bottom of the inner box 5 is provided with a power supply box 37 so that the center of gravity of the inner box 5 is shifted to its center. The power supply box 37 is electrically connected to the controller 27.

[0059] The top of the cover 14 is fixedly provided with a slide rail 38 extending in the left-right direction. Both ends of the slide rail 38 extend to the left and right outer sides of the power supply box 37. A counterweight 39 is slidably mounted on the slide rail 38. A positioning screw 40 is threadedly connected to the counterweight 39. One end of the positioning screw 40 can abut against the slide rail 38 to fix the position of the counterweight 39. By translating the counterweight 39, the inner box 5 can remain horizontal without external force.

[0060] The top of the cover 14 is equipped with a levelness monitoring device 41, which is a spirit level in this embodiment. By observing the levelness monitoring device 41, the levelness of the inner box 5 under no external force can be more accurate after adjustment.

[0061] Working principle: Before transportation, according to the required refrigeration temperature of the liquid sample to be transported, refrigerant at a suitable temperature is injected into the refrigerant storage space through injection tube 32. Throughout the transportation process, temperature sensor 33 monitors the temperature in the test tube placement space in real time and displays it on display screen 48, allowing transportation personnel to determine whether the refrigerant needs to be replaced. When discharging the refrigerant, after opening the cover 14, the solenoid valve 30 and suction pump 31 are opened via controller 27, which allows the refrigerant to be quickly discharged from the refrigerant storage space.

[0062] By adjusting the position of the counterweight 39, the installation positions of the components inside the inner box 5 and the placement position of the test tube 10 are no longer restricted. There is no need to carefully adjust the installation position of the test tube 10, and the upper opening of the inner box 5 always remains in a static horizontal state.

[0063] During transportation, whether the outer casing experiences significant swaying during normal transport or rolls after being accidentally dropped on the ground, the inner casing 5, through the rolling and rotation of the ball bearings 26 in the sliding groove 43 of the rolling shock absorption mechanism, combined with the rotational connection between the automatic telescopic rod 24 and the slider 22, ensures that the opening of the test tube 10 inside the inner casing 5 always faces upwards. Combined with the horizontal shock absorption obtained from the automatic telescopic rod 24 and the vertical shock absorption obtained from the buffer spring 23, the relative stability of the liquid sample in the test tube 10 is ensured.

[0064] Example 2: A liquid sample storage device. In this example, the connection gap between the upper shell 1 and the lower shell 2 is misaligned with the bisector of the outer shell, so that the inner box 5 can no longer be removed from the outer shell, thus preventing the inner box 5 from accidentally detaching from the lower shell 2 after the upper shell 1 is removed. Other structures are the same as in Example 1.

[0065] Example 3: A liquid sample storage device. In this example, the levelness monitoring device 41 uses a tilt sensor. The tilt sensor is connected to the controller 27, and the controller 27 can transmit the horizontal tiltness monitored by the tilt sensor to the display screen 48 for display. Other structures are the same as in Example 1.

[0066] Example 4: A liquid sample storage device, wherein the bottom of the inner casing 5 in this example has an arc-shaped surface structure. Other structures are the same as in Example 1.

[0067] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A liquid sample storage device, characterized in that: It includes a spherical outer shell and an inner box (5) disposed inside the outer shell; The outer shell includes a detachably connected upper shell (1) and a lower shell (2). The top of the upper shell (1) is provided with a handle (4), and the bottom of the lower shell (2) is provided with a support leg (3). The inner box (5) is an open box structure. The top of the inner box (5) is fixed with an annular support plate (7). The inner side of the annular support plate (7) is provided with a detachable test tube placement plate (8). The test tube placement plate (8) has several open placement holes (801). The left and right sides of the annular support plate (7) are fixed with vertically arranged first connecting plates (15), and the side of the first connecting plate (15) facing the outer shell is provided with a rolling shock absorption mechanism. The rolling damping mechanism includes an automatic telescopic rod (24), which is a spring telescopic rod that can extend and retract left and right. One end of the automatic telescopic rod (24) is connected to the first connecting plate (15). A rolling element is fixedly provided at the end of the automatic telescopic rod (24) facing the outer shell. The rolling element rolls in contact with the inner wall of the outer shell. The rolling damping mechanism includes a vertically arranged U-shaped frame (21), which is fixedly provided on the side of the first connecting plate (15) facing the outer shell. The opening of the U-shaped frame (21) faces the outer shell. A slider (22) that can move up and down is slidably connected to the side of the U-shaped frame (21) facing the outer shell. Buffer springs (23) are provided between the upper and lower sides of the slider (22) and the upper and lower end plates of the U-shaped frame (21). The end of the automatic telescopic rod (24) facing the first connecting plate (15) is connected to the slider (22). The top of the annular support plate (7) is provided with a removable cover (14).

2. The liquid sample storage device as described in claim 1, characterized in that: The end of the automatic telescopic rod (24) facing the first connecting plate (15) is rotatably connected to the slider (22).

3. A liquid sample storage device as described in any one of claims 1-2, characterized in that: The outer shell consists of a spherical inner support layer (42), a fourth heat insulation layer (45), and a decorative layer (46) from the inside out. Both the upper shell (1) and the lower shell (2) have arc-shaped grooves (43) on their inner walls. The grooves (43) are located on the inner side wall of the inner support layer (42). When the upper shell (1) and the lower shell (2) are connected, the two grooves (43) are connected to each other to form an annular groove connected end to end. The rolling element is rolled in the annular groove.

4. The liquid sample storage device as described in claim 3, characterized in that: The rolling element includes a fixed block (25) fixedly disposed at one end of the automatic telescopic rod (24) facing the outer shell, and a ball (26) is rolled and embedded on the side of the fixed block (25) facing the outer shell, and the ball (26) is rolled and disposed in an annular groove.

5. A liquid sample storage device as described in claim 1, characterized in that: A test tube (10) is inserted into the placement hole (801). The test tube (10) has an annular edge at the top end, which abuts against the test tube placement plate (8). The upper end of the test tube (10) is filled with a sealing rubber plug (11). A removable pressure bar (12) is provided between the top of the rubber stopper (11) and the cap (14).

6. A liquid sample storage device as described in claim 5, characterized in that: The pressure rod (12) is a spring telescopic rod that can extend and retract vertically, and when the cover (14) is connected to the annular support plate (7), the spring inside the pressure rod (12) is in a compressed state.

7. A liquid sample storage device as described in claim 1, characterized in that: The inner box (5) is fixedly provided with a partition (28) that can perform heat exchange. The partition (28) separates the internal space of the inner box (5) and forms a test tube placement space and a refrigerant storage space. The test tube placement space is located above the refrigerant storage space. An injection pipe (32) and a discharge pipe (29) are fixedly installed on the partition (28). The upper ends of the injection pipe (32) and the discharge pipe (29) pass through the annular support plate (7). The upper ends of the injection pipe (32) and the discharge pipe (29) are provided with removable plugs. The lower end of the discharge pipe (29) extends to the bottom of the inner box (5). The discharge pipe (29) is provided with a solenoid valve (30) and a suction pump (31). The suction pump (31) is located on the top of the partition (28). A temperature sensor (33) is installed inside the test tube placement space. The temperature sensor (33) is connected to the controller (27) via signal. A display screen (48) is installed on the outer surface of the outer shell. The display screen (48) is connected to the controller (27). The controller (27) is connected to the solenoid valve (30) and the suction pump (31) via control. The first connecting plate (15) is fixedly connected to a telescopic device (35) that can extend and retract left and right on the side facing the outer shell. The movable end of the telescopic device (35) is fixedly provided with a brake block (36). The telescopic device (35) can push the brake block (36) to the inner wall of the outer shell to fix the position of the inner box (5). The controller (27) is connected to the telescopic device (35) for control. The bottom of the inner box (5) is provided with a power supply box (37), which is electrically connected to the controller (27).

8. A liquid sample storage device as described in claim 7, characterized in that: The outer side of the inner box (5) is covered with a first heat insulation layer (6), and the upper end of the first heat insulation layer (6) is higher than the top of the partition (28); The annular support plate (7) has a second heat insulation layer (9) at the bottom of the upper part of the inner box (5) and at the bottom of the test tube placement plate (8), and a third heat insulation layer (34) is provided on the side wall of the test tube placement space.

9. A liquid sample storage device as described in claim 7, characterized in that: The bottom of the inner box (5) is a hemispherical or arc-shaped structure, and the power supply box (37) is located at the lowest point of the bottom of the inner box (5). The top of the cover (14) is fixedly provided with a slide rail (38) extending in the left and right direction. Both ends of the slide rail (38) extend to the left and right sides of the power box (37). A counterweight (39) is slidably provided on the slide rail (38). A positioning screw (40) is threadedly connected to the counterweight (39). One end of the positioning screw (40) can abut against the slide rail (38) to fix the position of the counterweight (39). A levelness monitoring device (41) is provided on the top of the cover (14).

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