Biological sample storage equipment

Abstract

The utility model discloses a biological sample storage device which comprises a barrel body, and a first refrigerant storage cavity is formed between the inner wall and the outer barrel wall of the barrel body. A sample rack accommodating cavity is formed between the first supporting part and the second supporting part; a plurality of sample frames with the same structure are arranged in the sample accommodating cavity; a plurality of radially inward sample cabins are formed in the side surface of each sample frame from top to bottom; a hanging unit is also arranged in the barrel body, and comprises a clamping block mechanism arranged at the lower part of the inner side of each sample frame and a clamping groove formed in the outer circular wall; through the design that refrigerants are stored in different cabins, biological samples are cooled more uniformly; due to the split design of the sample frame, an operator can conveniently classify and store biological samples; through the design of the suspension unit, an operator can independently operate any sample cabin, so that the pollution risk of an external environment to a biological sample is reduced, and the damage of temperature difference change to a cell structure of the biological sample is reduced.

Description

Technical Field

[0001] The utility model relates to the field of sample containers, in particular to a biological sample storage device. Background Art

[0002] With the continuous development of biotechnology, the storage and processing of biological samples has become an important part of scientific research. However, traditional biological sample storage equipment has some problems, such as inconvenient operation, poor safety, and inability to maintain sample activity for a long time. Therefore, designing a new type of biological sample storage equipment has become an urgent need.

[0003] The patent with application number 202023037349.2 discloses a biological sample collection device, which includes a protective shell, a first cover plate detachably provided on the upper surface of the protective shell, a handle fixedly provided on the upper surface of the first cover plate, a rotating screw fixedly provided on the lower surface of the first cover plate, the rotating screw and the protective shell are threadedly rotatably connected, a moisture-proof plate is fixedly provided inside the protective shell, an inner shell is movably provided on the inner wall of the moisture-proof plate, through holes are evenly distributed on the upper surface of the inner shell, and a second cover plate is movably inserted on the upper surface of the inner shell. This technology uses two fastening bolts on the upper surface of the second cover plate to turn the knob, and the second cover plate drives the insertion rod and the placement plate to slide out from the inside of the inner shell, and then manually opens the third cover plate, and then places the collected biological sample in the corresponding placement slot, thereby completing the storage of the biological sample.

[0004] Although the above technology can complete the storage of biological samples, it is inconvenient to operate. When the operator operates a single sample, he needs to take all the samples out of the container, which causes the loss of the refrigerant in the container, thereby causing the cell structure of the biological sample to be destroyed due to temperature changes, and also causes contamination of the biological sample, which directly affects the accuracy of medical examinations or research experiments. Utility Model Content

[0005] The utility model aims to provide a biological sample storage device, which can effectively classify and store biological samples and can also operate on a single sample to reduce the impact on the biological sample during the process of taking and placing.

[0006] The utility model adopts the following technical solutions:

[0007] A biological sample storage device comprises a barrel body; a first support part and a second support part are arranged in the barrel body; the inner side surface and the outer side surface of the first support part are respectively an inner cylinder wall and an outer cylinder wall with smooth surfaces, and the outer side surface of the second support part is an outer circular wall with smooth surface; a first refrigerant storage cavity is formed between the inner wall and the outer cylinder wall of the barrel body; a sample rack accommodating cavity is formed between the first support part and the second support part; a plurality of sample racks with the same structure are arranged in the sample accommodating cavity; a sample rack handle is arranged on the top surface of each sample rack, and a plurality of sample chambers radially inward are opened on the side surface of each sample rack from top to bottom; a hanging unit is also arranged in the barrel body, and the hanging unit comprises a clamping block mechanism arranged at the lower inner side of each sample rack and a clamping groove arranged on the outer circular wall; the clamping block mechanism and the clamping groove cooperate with each other.

[0008] Furthermore, the card block mechanism includes a vertical plate arranged on the inner side of the sample rack and a card block arranged on the lower side of the vertical plate; a first pin hole is opened at the lower end of the vertical plate along the front-to-back direction; the card block is a U-shaped structure, and a first pin shaft is passed through the upper part of the two side walls of the card block; the card block is passed through the first pin hole of the vertical plate through the first pin shaft, and the card block is rotatably connected to the vertical plate.

[0009] Furthermore, the block lifting mechanism includes a second pin shaft arranged on both sides of the block, a rotating arm arranged on both sides of the block and a connecting part arranged on the upper part of the vertical plate and moving up and down; a third pin shaft is arranged on the outer sides of the two walls of the connecting part, and a strip-shaped lifting arm is arranged on the top surface of the connecting part; the second pin shaft is rotatably connected to the lower end of the rotating arm; the upper end of the rotating arm is rotatably connected to the connecting part; upper and lower sliders are arranged on the outer sides of the two side walls of the connecting part, and upper and lower sliding grooves matching the upper and lower sliders are arranged on the front and rear sides of the vertical plate, and the connecting part is slidably connected to the upper and lower sliding grooves on the front and rear sides of the vertical plate through the upper and lower sliders.

[0010] Furthermore, a lifting arm limiting block is provided on the inner side of the sample rack; a lifting through hole matching the shape of the lifting arm is downwardly opened on the top of the lifting arm limiting block; a lifting block is provided on the upper end of the lifting arm, and a lifting slide matching the lifting block is provided on the inner side of the sample rack handle; the lifting block and the sample rack handle are slidably connected through the lifting slide; and limiting blocks are provided on both the front and rear sides of the vertical plate.

[0011] Furthermore, a block recovery mechanism is also provided in the barrel body, and the block recovery mechanism includes a tension spring provided on the side of the vertical plate; the upper end of the tension spring is connected to the third pin shaft, and the lower end is connected to the limit block.

[0012] Furthermore, the first supporting part and the second supporting part are provided with an inner slide groove and an outer slide groove, and the inner wall and the outer wall of the sample rack are provided with an inner slide rail and an outer slide rail adapted to the inner slide groove and the outer slide groove.

[0013] Furthermore, a first refrigerant sealing cover is provided at the upper end of the first refrigerant storage cavity; the upper end of the inner wall of the first refrigerant storage cavity and the first refrigerant sealing cover are both provided with matching threads; it also includes a second refrigerant storage mechanism, and the second refrigerant storage mechanism includes a second refrigerant storage cavity arranged in the second support part, and a second refrigerant sealing cover arranged on the upper part of the second refrigerant storage cavity; the upper end of the inner wall of the second refrigerant storage cavity and the second refrigerant sealing cover are both provided with matching threads.

[0014] Furthermore, the barrel cover is matched with the barrel body, and an annular sealing body is arranged on the lower end surface of the barrel cover; an annular sealing groove is arranged on the upper end surface of the barrel body, and the annular sealing groove is matched with the annular sealing body; the barrel cover and the barrel body are hingedly connected by a hinge.

[0015] Furthermore, the barrel body is a heat-insulating barrel.

[0016] Furthermore, a sample compartment door is also provided in the cylinder, and the sample compartment door is hinged to the outer side of the sample rack.

[0017] The utility model facilitates the operation of the equipment by the staff through the design of the hanging unit. At the same time, the design of storing the refrigerant in compartments makes the biological samples cooled more evenly, and further ensures the safety of the biological sample storage. Secondly, the design of the split sample rack makes it easier for the operator to classify and store the biological samples; thirdly, through the design of the hanging unit, the operator can operate any sample compartment separately, reducing the risk of contamination of the biological samples by the external environment, and the damage to the cell structure of the biological samples by temperature differences; at the same time. The utility model has good application prospects and market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an axonometric schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the location of the refrigerant storage chamber of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the first supporting part of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the second supporting part of the utility model;

[0023] Figure 6 This is a schematic diagram of the sample rack structure of the utility model;

[0024] Figure 7 This is a schematic diagram of the side structure of the sample rack of the utility model;

[0025] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of the middle part A;

[0026] Fig. 9 This is a front view of the card slot mechanism of the utility model;

[0027] Fig.10 This is a diagram showing the position relationship between the hook and the connecting part of the utility model;

[0028] Fig.11 This is a schematic diagram of the card slot structure of the utility model;

[0029] Fig.12 This is a schematic diagram of the position relationship between the hook and the slot of the utility model;

[0030] Fig.13 This is a schematic diagram of the position relationship of the lifting blocks in the utility model;

[0031] Fig.14 This is a schematic diagram of the barrel cover structure in the utility model;

[0032] Fig.15 This is a schematic diagram of the structure of the first refrigerant sealing cover in the utility model;

[0033] Fig.16 It is a schematic diagram of the structure of the second refrigerant sealing cover in the utility model.

[0034] In the figure, 1, barrel; 2, first support part; 3, second support part; 4, inner cylinder wall; 5, outer cylinder wall; 6, outer circular wall; 7, first refrigerant storage chamber; 8, sample rack accommodating chamber; 9, sample rack; 10, sample rack handle; 11, sample compartment; 12, card slot; 13, card block; 14, vertical plate; 15, first pin hole; 16, first pin shaft; 17, second pin shaft; 18, rotating arm; 19, connecting part; 20, third pin shaft; 21, lifting arm; 22, upper and lower Slider; 23. Upper and lower slide grooves; 24. Lifting arm limiting block; 25. Lifting through hole; 26. Lifting block; 27. Lifting slide groove; 28. Limiting block; 29. ​​Tension spring; 30. Inner slide groove; 31. Outer slide groove; 32. Inner slide rail; 33. Outer slide rail; 34. First refrigerant sealing cover; 35. Second refrigerant storage chamber; 36. Second refrigerant sealing cover; 37. Bucket cover; 38. Annular sealing body; 39. Annular sealing groove; 40. Hinge; 41. Sample compartment door. DETAILED DESCRIPTION

[0035] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0036] like Figures 1 to 16As shown, the biological sample storage device described in the utility model comprises a barrel body 1 with an open upper end; the barrel body 1 is coaxially provided with a cylindrical first support part 2 and a cylindrical second support part 3 from the outside to the inside; the inner side surface and the outer side surface of the first support part 2 are respectively an inner cylinder wall 4 and an outer cylinder wall 5 with smooth surfaces, and the outer side surface of the second support part 3 is an outer circular wall 6 with smooth surface; a first refrigerant storage chamber 7 is formed between the inner wall and the outer cylinder wall 5 of the barrel body 1; a sample rack accommodating chamber 8 is formed between the first support part 2 and the second support part 3; a plurality of sample racks 9 with the same structure are arranged in the sample rack accommodating chamber 8, and the structure of each sample rack 9 is a fan-shaped body; the outer arc and the inner arc of each sample rack 9 are respectively adapted to the first support part 2 and the second support part 3; the top surface of each sample rack 9 is provided There is a sample rack handle 10, and a plurality of sample chambers 11 radially inwardly extending from top to bottom are provided on the side surface of each sample rack 9, and the sample chambers 11 are used to place biological samples collected by the operator; a hanging unit is also provided in the barrel body 1, and the hanging unit includes a clamping block mechanism provided at the lower inner part of each sample rack 9 and a clamping groove 12 provided on the side of the outer circular wall 6; the clamping block mechanism and the clamping groove 12 cooperate with each other, so that the operator can hang any sample rack 9 on the second supporting part 3, and can expose the sample chamber 11 to be operated to the outside of the sample rack accommodating cavity 8, and the remaining sample chambers 11 at the lower part of the sample chamber 11 to be operated are still located in the sample rack accommodating cavity 8; while satisfying the need to operate the samples in the sample chamber 11, the influence of the sample operation on the samples in other sample chambers 11 can be reduced;

[0037] The sample rack 9 can be arranged in one or more groups, and the sample chamber 11 can also be arranged in one or more groups. In the present embodiment, the sample rack 9 is arranged in six groups, and each sample rack 9 is provided with five groups of sample chambers 11. The sample rack 9 is designed with separation between multiple sample racks 9 and the sample chamber 11 is designed to be split, so as to facilitate the classification and placement of biological samples and the individual operation of each sample rack 9 by the operator. This prevents the biological samples that are not operated from being exposed to the outside of the device, avoids the biological contamination of the samples by the external sterile environment, and avoids the damage of the cell structure of the biological samples by temperature changes.

[0038] In order to facilitate the operator to flexibly hang the sample rack 9, such as Figure 7 and Figure 8 As shown, in the utility model, the card block mechanism includes a vertical plate 14 arranged on the inner side of the sample rack 9 and a card block 13 arranged on the lower side of the vertical plate 14; a first pin hole 15 is opened at the lower end of the vertical plate 14 along the front-to-back direction; the card block 13 is a U-shaped structure, and a first pin shaft 16 is penetrated through the upper part of the two side walls of the card block 13; the card block 13 is penetrated into the first pin hole 15 of the vertical plate 14 through the first pin shaft 16, thereby realizing the rotation connection between the card block 13 and the vertical plate 14; the bottom surface of the card block 13 in the natural state is parallel to the bottom surface of the vertical plate 14, and does not interfere with the card slot 12 and the outer circular wall 6.

[0039] In order to match the card block 13 with the card slot 12 to form a hanging state of the sample rack 9, as shown in FIG. Fig. 9 As shown, in the utility model, a card block lifting mechanism is also provided; the card block lifting mechanism includes a second pin shaft 17 arranged on both sides of the card block 13, a rotating arm 18 arranged on both sides of the card block 13 and a connecting portion 19 arranged on the upper part of the vertical plate 14 and moving up and down; the connecting portion 19 has an inverted U-shape structure, and a third pin shaft 20 is arranged on the outer sides of the two walls of the connecting portion 19, and a strip-shaped lifting arm 21 is arranged on the top surface of the connecting portion 19; the second pin shaft 17 is rotatably connected to the lower end of the rotating arm 18; the upper end of the rotating arm 18 is rotatably connected to the connecting portion 19; the lifting arm 21 moves up and down to drive the connecting portion 19 to move up and down, and at the same time, it is converted into a clockwise circular motion or a counterclockwise circular motion of the card block 13 along the first pin shaft 16 through the rotating arm 18.

[0040] In order to make the up and down movement of the connecting part 19 more stable, Figure 8 As shown, in the utility model, upper and lower sliding blocks 22 are provided on the outer sides of the two side walls of the connecting portion 19, and upper and lower sliding grooves 23 adapted to the upper and lower sliding blocks 22 are provided on the front and rear sides of the vertical plate 14. The connecting portion 19 is slidably connected with the upper and lower sliding grooves 23 on the front and rear sides of the vertical plate 14 through the upper and lower sliding blocks 22.

[0041] In order to make the lifting arm 21 move up and down more smoothly, Figure 8 As shown, in the present invention, a lifting arm limiting block 24 is provided inside the sample rack 9 ; a lifting through hole 25 matching the shape of the lifting arm 21 is opened downwardly from the top of the lifting arm limiting block 24 .

[0042] In order to further facilitate the operator to operate the suspension unit, in the utility model, a lifting block 26 is provided at the upper end of the lifting arm 21, and a lifting groove 27 adapted to the lifting block 26 is provided on the inner side of the sample rack handle 10; the lifting block 26 and the sample rack handle 10 are slidably connected through the lifting groove 27.

[0043] In order to limit the circular motion of the block 13 and prevent the block 13 from excessively rotating along the first pin shaft 16 so as to be unable to reach the locking position with the slot 12; in the utility model, rectangular limit blocks 28 are provided on both the front and rear sides of the vertical plate 14; the two limit blocks 28 limit the two side walls of the block 13 to prevent the block 13 from excessively rotating along the first pin shaft 16.

[0044] In order to facilitate the retraction and placement of the card block mechanism and avoid the card block mechanism interfering with the placement and removal of the sample rack 9, as shown in FIG. Fig. 9 , Fig.10 and Fig.12As shown, the utility model is also provided with a card block recovery mechanism; the card block recovery mechanism includes two tension springs 29 arranged on both sides of the vertical plate 14; the upper ends of the two tension springs 29 are connected to the third pin shaft 20, and the lower ends are connected to the limit block 28, and the card block 13 is reset by the elastic drive of the tension spring 29.

[0045] In order to further enhance the smoothness of taking and placing the sample chamber 11, Figure 4 and Figure 5 As shown, in the utility model, the first support part 2 and the second support part 3 are both provided with a plurality of inner slide grooves 30 and outer slide grooves 31 , and the inner wall and outer wall of each sample rack 9 are both provided with inner slide rails 32 and outer slide rails 33 adapted to the inner slide grooves 30 and the outer slide grooves 31 .

[0046] In order to avoid the loss of the refrigerant in the barrel 1, Figure 2 and Fig.15 As shown, in the utility model, a first refrigerant sealing cover 34 is provided at the upper end of the first refrigerant storage chamber 7; the upper end of the inner wall of the first refrigerant storage chamber 7 and the first refrigerant sealing cover 34 are both provided with matching threads; the first refrigerant storage chamber 7 is used to store the refrigerant medium, and the first refrigerant sealing cover 34 seals the first refrigerant storage chamber 7 to prevent the refrigerant medium in the first refrigerant storage chamber 7 from being lost.

[0047] In order to further ensure that the biological samples in the sample rack 9 in the barrel 1 are cooled evenly, Figure 3 and Fig.16 As shown, in the utility model, a second refrigerant storage mechanism is further provided, and the second refrigerant storage mechanism includes a second refrigerant storage cavity 35 opened downwardly on the upper end surface of the second support portion 3, and a second refrigerant sealing cover 36 arranged on the upper part of the second refrigerant storage cavity 35; the upper end of the inner wall of the second refrigerant storage cavity 35 and the second refrigerant sealing cover 36 are both provided with matching threads; the second refrigerant storage cavity 35 is used to store the refrigerant medium, and the second refrigerant sealing cover 36 seals the second refrigerant storage cavity 35 to prevent the refrigerant medium in the second refrigerant storage cavity 35 from being lost.

[0048] In order to ensure the sealing of the barrel body 1 and prevent the heat exchange between the inside of the barrel body 1 and the room temperature, thereby causing poor refrigeration effect, Fig.14 As shown, in the utility model, the barrel cover 37 is a cylindrical structure with a diameter matching the barrel body 1, and the lower end surface of the barrel cover 37 is provided with an annular sealing body 38 with an annular protrusion structure; the upper end surface of the barrel body 1 is provided with an annular sealing groove 39, and the annular sealing groove 39 is matched with the annular sealing body 38;

[0049] In this embodiment, the annular sealing body 38 can be made of flexible materials such as a rubber ring. The annular sealing body 38 cooperates with the annular sealing groove 39 to ensure the airtightness of the barrel body 1 and prevent the cold air inside the barrel body 1 from exchanging heat with the room temperature.

[0050] In order to facilitate the opening and closing of the barrel cover 37 , in the utility model, the barrel cover 37 and the barrel body 1 are hingedly connected by a hinge 40 .

[0051] In order to enhance the heat preservation property of the barrel body 1, in this embodiment, the barrel body 1 may be a stainless steel heat preservation barrel.

[0052] In order to enhance the safety of biological samples, in the present invention, a sample chamber door 41 is further provided on the outside of the sample chamber 11 , and the sample chamber door 41 is hinged to the sample rack 9 .

[0053] Usage process:

[0054] When the biological samples need to be stored, open the barrel cover 37, open the first refrigerant sealing cover 34 and the second refrigerant sealing cover 36, and pour the freezing medium into the first refrigerant storage cavity 7 and the second refrigerant storage cavity; pull the sample rack 9 out of the sample rack accommodating cavity 8, open the sample compartment door 41, and place the biological samples into the sample compartment 11 respectively; close the sample compartment door 41, and after placing the sample rack 9 into the sample rack accommodating cavity 8, cover the barrel cover 37.

[0055] When it is necessary to operate a certain sample chamber 11 in a certain sample rack 9 separately; open the barrel cover 37 and use the sample rack handle 10 to lift the sample rack 9 upward; when the sample chamber 11 that needs to be operated is lifted to the outside of the sample rack accommodating cavity 8, the operator uses his finger to press the lifting block 26 upward; the lifting block 26 drives the lifting arm 21 to move upward, and the lifting arm 21 drives the connecting part 19 to move upward, and at the same time, the upward horizontal movement is converted into the inward rotational movement of the card block 13 along the first pin shaft 16 through the rotating arm 18; the limit block 28 that reaches the extreme position keeps the bottom surface of the card block 13 perpendicular to the vertical plate 14; at this time, the operator pushes the sample rack 9 downward and places the card block 13 that has reached the extreme position in the card slot 12; the action of the limit block 28 and the card slot 12 makes the card block 13 remain in a horizontal and static state, that is, the sample rack 9 is suspended.

[0056] When the operation on a certain sample chamber 11 in the sample rack 9 is completed, the sample rack 9 needs to be retracted into the sample rack accommodating cavity 8; the operator pulls up the sample rack 9, and the card block 13 is separated from the card slot 12; the upward pull is continued, the tension spring 29 retracts, and drives the connecting part 19 to move downward; the connecting part 19 converts the downward horizontal movement into the outward rotational movement of the card block 13 along the first pin shaft 16 through the rotating arm 18, and resets the card block 13 to the initial state; and the card block 13 does not interfere with the outer circular wall 6 and the vertical plate 14 during and after the resetting process.

Claims

1. A biological sample storage device, characterized in that: It comprises a barrel body; a first supporting part and a second supporting part are arranged in the barrel body; the inner side surface and the outer side surface of the first supporting part are respectively an inner cylinder wall and an outer cylinder wall with smooth surfaces, and the outer side surface of the second supporting part is an outer circular wall with smooth surface; a first refrigerant storage cavity is formed between the inner wall and the outer cylinder wall of the barrel body; a sample rack accommodating cavity is formed between the first supporting part and the second supporting part; a plurality of sample racks with the same structure are arranged in the sample accommodating cavity; a sample rack handle is arranged on the top surface of each sample rack, and a plurality of sample chambers radially inward are opened on the side surface of each sample rack from top to bottom; a hanging unit is also arranged in the barrel body, and the hanging unit comprises a clamping block mechanism arranged at the lower inner side of each sample rack and a clamping groove arranged on the outer circular wall; the clamping block mechanism and the clamping groove cooperate with each other.

2. A biological sample storage device according to claim 1, characterized in that: The card block mechanism includes a vertical plate arranged on the inner side of the sample rack and a card block arranged on the lower side of the vertical plate; a first pin hole is opened at the lower end of the vertical plate along the front-to-back direction; the card block is a U-shaped structure, and a first pin shaft is passed through the upper part of the two side walls of the card block; the card block is passed through the first pin hole of the vertical plate through the first pin shaft, and the card block is rotatably connected to the vertical plate.

3. A biological sample storage device according to claim 2, characterized in that: A card block lifting mechanism is also provided; the card block lifting mechanism includes a second pin shaft arranged on both sides of the card block, a rotating arm arranged on both sides of the card block and a connecting part arranged on the upper part of the vertical plate and moving up and down; a third pin shaft is arranged on the outer sides of the two walls of the connecting part, and a strip-shaped lifting arm is arranged on the top surface of the connecting part; the second pin shaft is rotatably connected to the lower end of the rotating arm; the upper end of the rotating arm is rotatably connected to the connecting part; upper and lower sliding blocks are arranged on the outer sides of the two side walls of the connecting part, and upper and lower sliding grooves matching the upper and lower sliding blocks are arranged on the front and rear sides of the vertical plate, and the connecting part is slidably connected to the upper and lower sliding grooves on the front and rear sides of the vertical plate through the upper and lower sliding blocks.

4. A biological sample storage device according to claim 1, characterized in that: A lifting arm limiting block is arranged on the inner side of the sample rack; a lifting through hole matching the shape of the lifting arm is opened downwardly on the top of the lifting arm limiting block; a lifting block is arranged on the upper end of the lifting arm, and a lifting slide matching the lifting block is arranged on the inner side of the sample rack handle; the lifting block and the sample rack handle are slidably connected through the lifting slide; and limiting blocks are arranged on both the front and rear sides of the vertical plate.

5. A biological sample storage device according to claim 4, characterized in that: A card block recovery mechanism is also provided, and the card block recovery mechanism comprises a tension spring arranged on the side of the vertical plate; the upper end of the tension spring is connected to the third pin shaft, and the lower end is connected to the limit block.

6. The biological sample storage device according to claim 1, characterized in that: The first supporting part and the second supporting part are provided with an inner slide groove and an outer slide groove, and the inner wall and the outer wall of the sample rack are provided with an inner slide rail and an outer slide rail matched with the inner slide groove and the outer slide groove.

7. The biological sample storage device according to claim 1, characterized in that: A first refrigerant sealing cover is arranged at the upper end of the first refrigerant storage cavity; the upper end of the inner wall of the first refrigerant storage cavity and the first refrigerant sealing cover are both provided with matching threads; it also includes a second refrigerant storage mechanism, and the second refrigerant storage mechanism includes a second refrigerant storage cavity arranged in the second support part, and a second refrigerant sealing cover arranged on the upper part of the second refrigerant storage cavity; the upper end of the inner wall of the second refrigerant storage cavity and the second refrigerant sealing cover are both provided with matching threads.

8. The biological sample storage device according to claim 1, characterized in that: A barrel cover is also provided, the diameter of which is matched with the barrel body, and an annular sealing body is provided on the lower end surface of the barrel cover; an annular sealing groove is provided on the upper end surface of the barrel body, and the annular sealing groove is matched with the annular sealing body; the barrel cover and the barrel body are hingedly connected by a hinge.

9. The biological sample storage device according to claim 1, characterized in that: The barrel body adopts an insulation barrel.

10. The biological sample storage device according to claim 1, characterized in that: A sample cabin door is also provided, and the sample cabin door is hinged to the outer side of the sample rack.

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