A storage box for biological samples

Abstract

The application discloses a storage box for biological samples, and belongs to a biological sample storage device, which is used for biological samples and comprises a base, a box body and a box cover. A middle fixing base is arranged in the box body, the middle fixing base is provided with a middle connecting plate, a sidewall groove body contains and fixes a sidewall connecting plate, a sample placing unit is arranged between the sidewall connecting plate and the middle connecting plate, and a pipe body is arranged in the sample placing unit. The box body is provided with a sidewall cavity with sidewall support. The sidewall cavity is provided with a corner support with a corner connecting hole at a corner position. The box body is processed with sidewall air exchange holes which are in communication with the sidewall cavity on the inner sides of two opposite sidewalls. Refrigerant air exchange plates are connected to the other two sidewalls of the box body which are not provided with the sidewall air exchange holes, and the refrigerant air exchange plates are arranged in the sidewall cavity. The application can guarantee the posture and fluidity of biological samples, and can protect the biological samples, replace the traditional biological storage structure and improve flexibility and adaptability.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of biological sample storage devices, and particularly relates to a biological sample storage box. BACKGROUND

[0002] Biological samples play an important role in scientific research. After being collected, biological samples need to be temporarily transported through a storage box.

[0003] Referring to the patent document CN110436027A, a system for storing biological samples is disclosed, and the following technical solution is specifically disclosed: a tank body has a cavity, which is divided into a first cavity and a second cavity in the vertical direction by a heat preservation piece; the upper end of the tank body is open and is closed by a heat preservation cover; the heat preservation piece is provided with an opening for the storage rack to pass through; the heat preservation piece is provided with two first heat preservation plates, and the two first heat preservation plates have an included angle and make the opening located in the space enclosed by the two first heat preservation plates. The system for storing biological samples of the present application divides the space inside the tank body into multiple cavities through the arrangement of the heat preservation piece and the first heat preservation plates, which can avoid cooling the entire large-volume tank body cavity before lifting the storage rack, reduce the loss of liquid nitrogen, and prevent the rapid dissipation of cold energy after lifting the storage rack to protect the biological samples in the second cavity.

[0004] In the above-mentioned prior art patent document, the structure is relatively complex, and the stability of the biological sample storage box with a complex structure is prone to have hidden dangers during use. Secondly, the protection and posture adjustment of biological samples are not mentioned in the above-mentioned document, which cannot meet the placement of different types of tubes. Thirdly, the special fluidity requirement of the sample is also unclear and cannot be solved. SUMMARY

[0005] The present application aims to provide a biological sample storage box which can ensure the posture and fluidity of biological samples and protect biological samples, replace the traditional biological storage structure, and improve flexibility and adaptability.

[0006] To achieve the above-mentioned purpose, the present application is realized by the following technical solution:

[0007] The biological sample storage box described in the application comprises a box body, the top end of the box body is open, the bottom end is blocked by an integrally arranged base, a box cover is attached to the position of the top end opening of the box body, a middle fixing seat is arranged at the central position of the inside of the box body, a groove for accommodating and fixing a middle connecting plate is machined on the circumferential side of the middle fixing seat, a side wall groove is arranged at the position corresponding to the circumferential side groove of the middle fixing seat, and a side wall connecting plate is accommodated and fixed in the side wall groove, a sample placing unit is arranged between the side wall connecting plate and the middle connecting plate, and a tube body is installed in the sample placing unit; a side wall cavity is arranged in the inside of the circumferential side wall of the box body, a side wall support is integrally arranged at the position of the side wall cavity corresponding to the side wall connecting plate, and the side wall support divides the side wall cavity into four independent chambers; an angle support is arranged at the corner position of the side wall cavity, and an angle connecting hole penetrating through the angle support is machined in the height direction of the angle support; a side wall air exchange hole penetrating through the side wall cavity is machined in the inside of the two opposite parallel side walls of the box body, the side wall air exchange holes are distributed on the side walls at the corresponding positions, a refrigerant air exchange plate is connected to the other two side walls of the box body which are not provided with the side wall air exchange holes, and the refrigerant air exchange plate is located in the side wall cavity; the refrigerant air exchange plate is blocked by a refrigerant blocking plate in the direction towards the outside end of the side wall of the box body.

[0008] As one of the preferred technical solutions of the application, a box body connecting end is arranged at the top of the box body, an embedding groove for placing a connecting sealing ring is arranged on the circumference of the box body connecting end, and the connecting sealing ring is located between the box body connecting end and the box cover; a cover body connecting piece is further arranged on the box cover, connecting holes are machined at positions corresponding to the seat body connecting holes on the box cover and the middle fixing seat of the box body, the cover body connecting piece is inserted into the connecting holes, and the cover body connecting piece is connected by a threaded structure when it extends into the seat body connecting hole.

[0009] As one of the preferred technical solutions of the application, the sample placing unit comprises an outer ring body, the two ends of the outer ring body are connected to the side wall connecting plates and the middle connecting plates at the corresponding positions through integrally arranged outer ring fixing seats, the side wall connecting plates and the middle connecting plates are respectively provided with a plurality of side wall fixing holes and middle fixing holes in the length direction, an inner ring body is arranged in the space formed by the outer ring body, and the inner ring body rotates about the central axis of the inner ring connecting sleeve of the outer ring body through the inner ring connecting sleeve; a tube body is arranged in the inner ring body.

[0010] As one of the preferred technical solutions of the application, symmetrical inner ring guide holes are arranged on the inner ring body, and the inner ring guide holes are located between adjacent inner ring connecting sleeves; the two ends of the tube body are connected to the inner ring body through a tube body fixing seat; and the tube body fixing seat moves along the inner ring guide hole.

[0011] As one of the preferred technical solutions of the present application, the two ends of the pipe body fixing seat are clamped in the clamping groove of the pipe body fixing seat through the pipe body clamping plate, and the end of the clamping groove of the pipe body fixing seat is blocked by the clamping block; the pipe body clamping plate is connected with the pipe body through a plurality of pipe body connecting seats, and the pipe body connecting seat is provided with a groove connected with the end of the pipe body.

[0012] As one of the preferred technical solutions of the present application, the top end of the pipe body fixing seat is connected with the telescopic end of the push rod motor, the telescopic end of the push rod motor passes through the limiting seat body and the inner ring guide hole and is connected with the pipe body fixing seat; the bottom surface of the limiting seat body slides along the outer surface of the inner ring body; the limiting seat body is provided with a seat body driving motor on both sides, the output shaft of the seat body driving motor passes through the limiting seat body and is connected with the seat body driving wheel, and the seat body driving wheel is in contact with the two sides of the inner ring body; the seat body driving motor and the push rod motor are connected with the controller through electric signals, and the controller is located in the base, and the base is provided with a storage battery.

[0013] As one of the preferred technical solutions of the present application, the circumferential side surface of the box body is respectively provided with a plurality of buffer protrusions, and the cross section of the buffer protrusion is a hollow isosceles trapezoid.

[0014] As one of the preferred technical solutions of the present application, the bottom of the inner ring is provided with a counterweight, and the counterweight is located below the pipe body.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] 1. The present application can adapt to different models of pipe body, and can ensure the clamping operation of the pipe body while adapting to different models of pipe body.

[0017] 2. The present application can realize the adjustment of the posture of the pipe body, which can ensure that the posture of the pipe body itself is vertically arranged relative to the placing surface when the base is placed non-horizontally, and can also realize the guarantee of the flowability of the biological sample in the pipe body under special circumstances under the control of the controller.

[0018] 3. The present application can improve the protection performance of the pipe body, and the protection performance of the box body is improved through the redesign of the box body structure, and the protection performance is realized under the joint action of the buffer protrusion, the side wall cavity, the side wall support, the corner support and the refrigerant air exchange plate. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the present application.

[0020] Figure 2 is a front view of the present application.

[0021] Figure 3 is Figure 2A cross-sectional view along the position and direction indicated by A-A.

[0022] Figure 4 is a perspective view of the present application after removing the box cover.

[0023] Figure 5 is a perspective view of the present application after removing the box cover and the refrigerant blocking plate.

[0024] Figure 6 is a perspective view of the present application after removing the box cover, the refrigerant blocking plate and the box body connecting end.

[0025] Figure 7 is a perspective view of the sample placement unit of the present application.

[0026] Figure 8 is Figure 7 is a partial enlarged view of part I.

[0027] Figure 9 is a front view of the present application.

[0028] Figure 10 is Figure 9 A cross-sectional view along the position and direction indicated by B-B.

[0029] In the figure: 1, box cover; 2, cover handle; 3, cover body connecting piece; 4, buffer protrusion; 5, refrigerant blocking plate; 6, base; 7, connecting sealing ring; 8, box body connecting end; 9, side wall connecting plate; 10, side wall fixing hole; 11, box body containing cavity; 12, sample placement unit; 13, middle connecting plate; 14, middle fixing hole; 15, seat body connecting hole; 16, side wall groove body; 17, box body; 18, side wall air exchange hole; 19, middle fixing seat; 20, refrigerant air exchange plate; 21, side wall cavity; 22, side wall support; 23, corner support piece; 24, corner connecting hole; 25, inner ring body; 26, inner ring guide hole; 27, inner ring connecting sleeve; 28, outer ring body; 29, outer ring fixing seat; 30, outer ring lightening hole; 31, limiting seat body; 32, push rod motor; 33, seat body drive wheel; 34, seat body drive motor; 35, pipe body fixing seat; 36, pipe body; 37, pipe body clamping plate; 38, clamping blocking block. DETAILED DESCRIPTION

[0030] The technical solutions described in the present application will be further described and explained in conjunction with the drawings and examples. Example 1

[0031] As shown in Figures 1 to 10 , a biological sample storage box comprises a box body 17, the bottom end of the box body 17 is connected to the base 6 as one body, the top end of the box body 17 is open, the box cover 1 is covered on the open position of the top end of the box body 17, and the top surface of the box cover 1 has a cover handle 2 integrated therewith.

[0032] The box 17 is internally formed with a box accommodating cavity 11, which contains a middle fixing seat 19, the bottom end of the middle fixing seat 19 is fixed to the base 6, the base 6 is a rectangular column, and the circumferential side of the base 6 is correspondingly arranged with the circumferential side of the box 17.

[0033] The circumferential side of the base 6 is processed with a groove body accommodating the middle connecting plate 13, and a plurality of middle fixing holes 14 are distributed in the length direction of the middle connecting plate 13. The circumferential side wall of the box 17 is correspondingly processed with a side wall groove body 16 inside, the side wall groove body 16 is provided with a side wall connecting plate 9, a plurality of side wall fixing holes 10 are distributed in the length direction of the side wall connecting plate 9, and the side wall fixing holes 10 are correspondingly arranged with the middle fixing holes 14.

[0034] The side wall connecting plate 9 is connected with the sample placing unit 12 through the side wall fixing hole 10, and the middle connecting plate 13 is connected with the sample placing unit 12 through the middle fixing hole 14. The sample placing unit 12 is distributed around the circumference of the middle fixing seat 19.

[0035] The box 17 is processed with a side wall cavity 21 in the side wall, the side wall cavity 21 is divided into a plurality of parts by a side wall support 22, the side wall support 22 is located at the middle position of the circumferential side wall of the box 17 and is integrated with the circumferential side wall of the box 17.

[0036] The side wall cavity 21 is also integrally provided with a corner support 23 at the corner position of the box 17, the corner support 23 has a plurality of corner connecting holes 24 communicating the two side wall cavities 21.

[0037] The box 17 is processed with a plurality of side wall air exchange holes 18 inside one pair of parallel arranged side walls, the side wall air exchange holes 18 are communicated with the side wall cavities 21 at the corresponding positions.

[0038] The side wall support 22 not only realizes the division of the side wall cavity 21 in the circumferential direction, but also can cooperate with the side wall groove body 16 in the side wall of the box 17 to realize the support and fixation of the side wall connecting plate 9.

[0039] The box 17 is respectively processed with a refrigerant air exchange plate 20 on the other pair of side walls which are not provided with the side wall air exchange hole 18, the refrigerant air exchange plate 20 has a space containing refrigerant and at the same time has a through hole communicated with the side wall cavity 21 to realize the cooling of the air in the side wall cavity 21 by the refrigerant. The refrigerant air exchange plate 20 is located on the outer wall of the box 17 and is arranged on both sides of the side wall groove body 16 at the corresponding positions. The opening end of the refrigerant air exchange plate 20 towards the outside of the box 17 is blocked by a refrigerant blocking plate 5, and the outer wall of the box 17 should have a heat preservation device to realize the heat exchange between the refrigerant contained in the refrigerant air exchange plate 20 and the outside.

[0040] The top end of the side wall cavity 21 is blocked by the box connecting end 8, which is provided with a groove on the circumferential side to accommodate the connecting sealing ring 7. The connecting sealing ring 7 is in contact with the inner wall of the box cover 1 and deforms to seal the end surface in contact.

[0041] The box 17 is further provided with several buffer protrusions 4 on the circumferential side wall. The cross section of the buffer protrusion 4 is a hollow isosceles trapezoid, which is made of rubber material and can provide sufficient protection for the circumferential outer wall of the box 17. Embodiment 2

[0042] Continuing to refer to Figures 1 to 10 , in particular Figures 7 to 10 , a storage box for biological samples, wherein the sample placing unit 12 comprises an outer ring body 28, which is provided with two outer ring fixing seats 29 on the circumferential symmetry. The outer ring fixing seat 29 is connected with the side wall connecting plate 9 and the middle connecting plate 13 at the corresponding position through fasteners.

[0043] The outer ring body 28 is a ring body, which is provided with several outer ring weight reduction holes 30. The outer ring body 28 is further connected with an inner ring connecting sleeve 27 through a rotating shaft. The inner ring connecting sleeve 27 rotates around its central axis.

[0044] The inner ring connecting sleeve 27 is fixed with the inner ring body 25 as a whole, and the inner ring connecting sleeve 27 is symmetrically arranged on the inner ring body 25. The inner ring body 25 rotates relative to the outer ring body 28 through the inner ring connecting sleeve 27 and the rotating shaft.

[0045] The inner ring body 25 is a ring body structure, which is provided with an inner ring guide hole 26 at the position between adjacent inner ring connecting sleeves 27. The inner ring guide hole 26 is symmetrically arranged on the inner ring body 25.

[0046] The telescopic end of the push rod motor 32 is slidably arranged in the inner ring guide hole 26. The telescopic end of the push rod motor 32 extends from the inside of the inner ring guide hole 26 and is connected with the tube body fixing seat 35. The tube body fixing seat 35 is located in the inner space of the inner ring body 25. Two tube body fixing seats 35 arranged in the inner space of the inner ring body 25 are connected with the tube body 36. The two ends of the tube body 36 are clamped with the tube body fixing seat 35 through the tube body clamping plate 37. The tube body clamping plate 37 has a tube body connecting seat corresponding to the several tube bodies 36.

[0047] The tube body clamping plate 37 is limited in the tube body fixing seat 35 by the clamping blocking block 38 at the end of the tube body fixing seat 35.

[0048] The limiting seat body 31 is located on the outer surface of the inner ring body 25, and the two sides of the limiting seat body 31 are respectively provided with a seat driving motor 34, and the output shaft of the seat driving motor 34 is connected with a corresponding seat driving wheel 33 after penetrating through the limiting seat body 31, and the seat driving wheel 33 is located on the two sides of the inner ring body 25 and in contact with the side surface of the inner ring body 25.

[0049] The push rod motor 32 is fixed on the limiting seat body 31.

[0050] The bottom of the inner ring body 25 is provided with a counterweight, and the counterweight is located below the pipe body 36. The seat driving motor 34 and the push rod motor 32 are connected with a controller through an electric signal, and the controller is located in the base 6, and the base 6 is provided with a battery. Embodiment 3

[0051] Continuing to refer to Figures 1 to 10 A biological sample storage box, wherein the box cover 1 and the cover handle 2 are provided with mounting holes corresponding to the seat connecting hole 15, the cover body connecting piece 3 penetrates into the seat connecting hole 15 through the mounting holes on the cover handle 2 and the box cover 1, and is threadedly connected with the seat connecting hole 15. The seat connecting hole 15 is located on the middle fixed seat 19.

[0052] The structures and connection relationships of the remaining parts are the same as those of any one of the structures and connection relationships described in the foregoing embodiments, and to avoid tedious writing, they will not be described here.

[0053] On the basis of the above-mentioned embodiments, the technical features involved therein and the functions and effects of the technical features in the technical solution are described in detail in the following paragraphs to help those skilled in the art fully understand the technical solution and reproduce it.

[0054] In the present application, the box cover 1 includes the cover handle 2, and mounting holes are further processed on the box cover 1 and the cover handle 2 to realize the connection of the cover body connecting piece 3 with the middle fixed seat 19. The bottom end of the box cover 1 is processed with a groove body accommodating the box body connecting end 8, and the sidewall of the circumferential edge of the box cover 1 is in contact with the box body connecting end 8 through the connecting sealing ring 7, and the connecting sealing ring 7 is deformed in the connected state of the two to ensure the sealing degree of the connected position. The cover body connecting piece 3 can ensure the stability of the connection between the box cover 1 and the box body 17, avoid accidental disconnection, so that the box body accommodating cavity 11 formed in the box body 17 has good airtightness, so as to cooperate with the refrigerant plugging plate 5 to realize the heat exchange of the refrigerant in the refrigerant exchange plate 20 to the box body accommodating cavity 11, and constant temperature after heat exchange. The outer surfaces of the box body 17, the refrigerant plugging plate 5, the box cover 1, the cover handle 2 and the cover body connecting piece 3 should be covered with thermal insulation material to improve the thermal insulation performance.

[0055] In the present application, the refrigerant placed in the refrigerant air exchange plate 20 can communicate with the side wall cavity 21 at the position through the circumferential through hole. As shown in Figures 1 to 6 The circumferential side wall cavity 21 of the box body 17 is divided into four parts by the side wall support 22, and each part of the side wall cavity 21 contains a refrigerant air exchange plate 20 and a side wall air exchange hole 18 matched therewith. The side wall cavity 21 at the corner position is provided with a side wall support 22, and the side wall support 22 communicates the side wall cavities 21 of the adjacent two parts through the length direction distributed corner connecting hole 24.

[0056] In this way, the cold air released by the refrigerant air exchange plate 20 can enter the side wall cavity 21 communicated with the side wall air exchange hole 18 through the side wall cavity 21 at the position, and diffuse into the box containing cavity 11 through the side wall air exchange hole 18, so as to reduce the temperature in the box containing cavity 11.

[0057] In the present application, the top end of the side wall cavity 21 is blocked by the box connecting end 8, which is a frame structure. A recess for accommodating the connecting sealing ring 7 is processed on the circumference of the box connecting end 8, and the connecting sealing ring 7 can be matched with the box cover 1 and the box body 17 to realize sealing at the position.

[0058] In the present application, the middle fixed seat 19 is located at the middle position of the box containing cavity 11, that is, the middle position of the box body 17 and the base 6. The middle fixed seat 19 is used as a support point to realize the connection of the sample placing unit 12 and the cover connecting piece 3. Specifically, a groove for placing the middle connecting plate 13 is processed on the middle fixed seat 19, and a plurality of middle fixed holes 14 are processed on the length direction of the middle connecting plate 13. A side wall groove 16 is processed on the inner side of the side wall of the box body 17 corresponding to the middle connecting plate 13, and a side wall connecting plate 9 is placed in the side wall groove 16. The side wall connecting plate 9 is provided with a plurality of side wall fixed holes 10 distributed in the length direction, and the side wall fixed holes 10 are arranged corresponding to the middle fixed holes 14 to realize the connection of the sample placing unit 12.

[0059] Since the side wall connecting plate 9 and the middle connecting plate 13 are distributed in the circumference around the middle fixed seat 19, the sample placing units 12 connected by the above two are also distributed in the circumference of the middle fixed seat 19.

[0060] The sample placing unit 12 includes two parts, one part is an outer ring body 28 and the other part is an inner ring body 25. The outer ring body 28 is connected with the side wall connecting plate 9 and the middle connecting plate 13 arranged at the corresponding position through the symmetrically arranged outer ring fixed seat 29 and the fastener to realize the fixation of the outer ring body 28 and the height setting relative to the base 6. Therefore, in the present application, a plurality of outer ring bodies 28 can be arranged in the height direction of the middle connecting plate 13 and the side wall connecting plate 9 to make full use of the space of the box containing cavity 11.

[0061] In the present application, the outer ring body 28 can be connected with the inner ring connecting sleeve 27 through the rotating shaft, the inner ring connecting sleeve 27 is located on the inner ring body 25, and the inner ring body 25 is connected with the rotating shaft through the inner ring connecting sleeve 27 to realize rotation around the central axis of the inner ring body 25, so that the attitude of the inner ring body 25 can be adjusted. It should be noted that the bottom end of the inner ring body 25 should have a counterweight to keep the inner ring body 25 vertical to the plane when the box body 17 is placed horizontally on the base 6.

[0062] In the present application, the inner ring body 25 is provided with an inner ring guide hole 26 between adjacent inner ring connecting sleeves 27, and a pipe body fixing seat 35 is slidably arranged in the inner ring guide hole 26 and moves relative to the inner ring body 25.

[0063] Specifically, referring to Figures 7 to 10 , the pipe body fixing seat 35 has a clamping groove for clamping the pipe body clamping plate 37, one end of the clamping groove is not through the pipe body clamping plate 37, the other end of the clamping groove is through one end of the pipe body clamping plate 37 to form an open structure, and the opening of the clamping groove is blocked by a clamping block 38 to realize the detachable replacement of the pipe body clamping plate 37 and the pipe body fixing seat 35.

[0064] In the present application, the pipe body fixing seat 35 is connected with the telescopic end of the push rod motor 32, and the telescopic end of the push rod motor 32 penetrates the inner ring guide hole 26. The push rod motor 32 is fixed on the limiting seat body 31. The telescopic end of the push rod motor 32 can limit the movement attitude and path of the pipe body fixing seat 35 in the inner ring guide hole 26.

[0065] The limiting seat body 31 is further provided with a seat body driving motor 34 on both sides, the output shaft of the seat body driving motor 34 is connected with a seat body driving wheel 33, and the seat body driving wheel 33 is located at the bottom end of the limiting seat body 31 and is arranged on both sides of the inner ring body 25. The seat body driving wheel 33 is in contact with both sides of the inner ring body 25 and drives the limiting seat body 31 to move along the inner ring guide hole 26 of the inner ring body 25 under the drive of the seat body driving motor 34. This structure can realize the attitude adjustment of the pipe body 36 through external force to ensure the required attitude of the pipe body 36.

[0066] In the present application, the pipe body fixing seat 35 can be provided with an attitude sensor to detect the relative attitude of the pipe body 36, and then the adjustment of the attitude of the pipe body 36 is realized through the seat body driving motor 34 and the seat body driving wheel 33 under the control of the controller. Secondly, in the present application, if the biological sample in the pipe body 36 needs to maintain fluidity according to the specified time under the control of the controller, the pipe body fixing seat 35 can be driven through the seat body driving motor 34 and the seat body driving wheel 33.

[0067] In the present application, the push rod motor 32 can realize the position adjustment of the pipe body fixing seat 35, and then realize the installation and fixation of the pipe body 36 with different lengths.

[0068] Finally, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. The skilled person should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that the skilled person can understand.

Claims

1. A storage box for biological samples, comprising a box body (17), the top end of the box body (17) being open, the bottom end being blocked by an integrally arranged base (6), and a box cover (1) being arranged on the position of the open top end of the box body (17), characterized in that: The middle fixing seat (19) is arranged at the inner center position of the box body (17), and the groove for accommodating and fixing the middle connecting plate (13) is processed on the circumferential side of the middle fixing seat (19). The side wall groove (16) is arranged at the position corresponding to the circumferential side groove of the middle fixing seat (19), and the side wall connecting plate (9) is accommodated and fixed in the side wall groove (16). The sample placing unit (12) is arranged between the side wall connecting plate (9) and the middle connecting plate (13). The pipe body (36) is installed in the sample placing unit (12). The side wall cavity (21) is arranged in the inner side of the circumferential side wall of the box body (17). The side wall support (22) is integrally arranged at the position of the side wall cavity (21) corresponding to the side wall connecting plate (9), and the side wall support (22) divides the side wall cavity (21) into four independent cavities. The corner support (23) is arranged at the corner position of the side wall cavity (21), and the corner connecting hole (24) penetrating through the corner support (23) is processed in the height direction of the corner support (23). The side wall air exchange hole (18) penetrating through the side wall cavity (21) is processed in the inner side of the two opposite parallel side walls of the box body (17). The side wall air exchange hole (18) is distributed on the side wall at the corresponding position. The refrigerant air exchange plate (20) is connected to the other two side walls of the box body (17) which are not provided with the side wall air exchange hole (18), and the refrigerant air exchange plate (20) is located in the side wall cavity (21). The refrigerant sealing plate (5) seals the direction of the outer end of the side wall of the box body (17). The sample placing unit (12) comprises the outer ring body (28), and the two ends of the outer ring body (28) are connected to the side wall connecting plate (9) and the middle connecting plate (13) at the corresponding positions through the integrally arranged outer ring fixing seat (29). The side wall fixing hole (10) and the middle fixing hole (14) are respectively arranged in the length direction of the side wall connecting plate (9) and the middle connecting plate (13). The inner ring body (25) is arranged in the space formed by the outer ring body (28). The inner ring body (25) is rotationally connected to the rotating shaft on the outer ring body (28) through the inner ring connecting sleeve (27). The pipe body (36) is arranged in the inner ring body (25). The inner ring guide hole (26) is symmetrically arranged on the inner ring body (25), and the inner ring guide hole (26) is located between the adjacent inner ring connecting sleeves (27). The two ends of the pipe body (36) are connected to the inner ring body (25) through the pipe body fixing seat (35). The pipe body fixing seat (35) moves along the inner ring guide hole (26). The top end of the pipe body fixing seat (35) is connected to the telescopic end of the push rod motor (32). The telescopic end of the push rod motor (32) passes through the limiting seat body (31) and the inner ring guide hole (26) and is connected to the pipe body fixing seat (35). The bottom surface of the limiting seat body (31) slides along the outer ring surface of the inner ring body (25).The limiting seat body (31) is provided with seat body driving motors (34) on both sides, the output shaft of the seat body driving motor (34) is connected with the seat body driving wheel (33) after penetrating through the limiting seat body (31), the seat body driving wheel (33) is in contact with the two sides of the inner ring body (25); the seat body driving motor (34) and the push rod motor (32) are connected with the controller through electric signals, the controller is located in the base (6), and the base (6) is provided with a battery.

2. The storage box for biological samples according to claim 1, characterized in that: The top of the box (17) is provided with a box connecting end (8), the circumference of the box connecting end (8) is provided with a slot for placing a connecting sealing ring (7), the connecting sealing ring (7) is located between the box connecting end (8) and the box cover (1); the box cover (1) is further provided with a cover connecting piece (3), the cover connecting piece (3) and the box cover (1) are both provided with a connecting hole at the corresponding position of the seat body connecting hole (15) on the middle fixed seat (19), the cover connecting piece (3) is inserted into the seat body connecting hole (15) and connected through a threaded structure.

3. The storage box for biological samples according to claim 1, characterized in that: The both ends of the pipe body fixed seat (35) are clamped in the clamping groove of the pipe body fixed seat (35) through the pipe body clamping plate (37), and the end of the clamping groove of the pipe body fixed seat (35) is blocked through the clamping blocking block (38); a plurality of pipe body connecting seats can be connected with the pipe body (36) through the pipe body clamping plate (37), and the pipe body connecting seat is provided with a groove connected with the end of the pipe body (36).

4. A storage case for biological samples as claimed in any one of claims 1 to 3, characterised in that: The circumferential side of the box (17) is respectively provided with a plurality of layers of buffer protrusions (4), and the cross section of the buffer protrusion (4) is a hollow isosceles trapezoid.

5. A storage case for biological samples as claimed in any one of claims 1 to 3, wherein: The bottom of the inner ring body (25) is provided with a counterweight, and the counterweight is located below the pipe body (36). The top of the box (17) is provided with a box connecting end (8), the circumference of the box connecting end (8) is provided with a slot for placing a connecting sealing ring (7), the connecting sealing ring (7) is located between the box connecting end (8) and the box cover (1); the box cover (1) is further provided with a cover connecting piece (3), the cover connecting piece (3) and the box cover (1) are both provided with a connecting hole at the corresponding position of the seat body connecting hole (15) on the middle fixed seat (19), the cover connecting piece (3) is inserted into the seat body connecting hole (15) and connected through a threaded structure.

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