A stem cell refrigerator

Abstract

The present invention relates to the field of cell transportation technology, and in particular to a stem cell refrigerator, comprising a box body and a rotating disk, wherein the box body comprises a handle, a lock, a heat preservation layer, a coolant storage layer, a sealing layer, a protective film, a motor, a motor protection shell, a box body shell and a box cover, wherein the rotating disk comprises a first slider, a first slide groove, a second slider, a second slide groove, a fixing belt, a fixing pin, a test tube groove, a sponge block and a test tube cooling mechanism, and a rotating disk is arranged inside the box body. The stem cell refrigerator solves the problems of easy shaking of test tubes, uneven cooling during stem cell transportation, single test tube types stored in the refrigerator, inability to quickly keep the test tubes in a low temperature state, and inconvenient storage and access operations by arranging a rotating disk, a fixing belt, a fixing pin, a test tube cooling mechanism, a first slider, a first slide groove, a second slider and a second slide groove.

Description

Technical Field

[0001] The present invention relates to the technical field of cell transportation, and in particular to a stem cell refrigerator. Background Art

[0002] Stem cells are a type of multipotent cells with the ability to self-replicate, divided into embryonic stem cells (ES cells and EG cells) and adult stem cells. It is generally believed that embryonic stem cells are omnipotent and can be divided into all tissues and organs in the body; while adult stem cells have relative "tissue specificity" and can only differentiate into specific tissue functional cells. After cell division, part of adult stem cells remain adult stem cells, and the other part becomes directed stem cells. The latter differentiate into differentiated cells of various levels with a limited number of divisions and rapid division, which are the main components of tissues and organs. Stem cells are generally stored in liquid nitrogen at minus 196°C.

[0003] But there are some disadvantages in the prior art:

[0004] 1. When stem cells are transported over long distances, they need to be refrigerated for storage and transportation to ensure the activity of the stem cells. In the prior art, the test tubes storing the stem cells are easily shaken during transportation, which may cause damage to the test tubes storing the stem cells.

[0005] 2. Stem cells are easily cooled unevenly during transportation, which reduces the activity of stem cells;

[0006] 3. The types of stem cell test tubes stored in the existing refrigerators are too single and cannot store stem cell test tubes of different sizes, which reduces the practicality of the refrigerator. When transporting stem cell test tubes of different sizes, multiple stem cell refrigerators are required, which increases the cost of stem cell transportation;

[0007] 4. When the test tube is just placed in the test tube slot, the temperature of the test tube cannot be quickly maintained at a low temperature, and it is inconvenient for the user to use the stem cell test tube. Summary of the invention

[0008] In view of the deficiencies in the prior art, the present invention provides a stem cell refrigerator to solve the problems mentioned in the background art, such as test tubes are easily shaken and cooled unevenly during stem cell transportation, the test tubes can only be stored in a single type in the refrigerator, the test tubes cannot be quickly kept at a low temperature, and the storage and retrieval operations are inconvenient.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A stem cell refrigerator comprises a box body and a rotating disk, wherein the box body comprises a handle, a lock, a thermal insulation layer, a coolant storage layer, a sealing layer, a protective film, a motor, a motor protection shell, a box body shell and a box cover, wherein the rotating disk comprises a first slider, a first slide groove, a second slider, a second slide groove, a fixing belt, a fixing pin, a test tube groove, a sponge block and a test tube cooling mechanism, the bottom end and the inner side surface of the box body shell are both provided with a thermal insulation layer, a coolant storage layer is provided on the inner side of the thermal insulation layer, a protective film is provided on the inner side of the coolant storage layer, and a rotating disk is provided on the inner side of the protective film.

[0011] Preferably, the first slide groove is an annular structure, the second slide groove is an annular structure, and the rotating disk is configured to be cylindrical.

[0012] Preferably, a motor protection shell is provided at the center position of the bottom end of the box body, and the motor is fixedly installed at the center position inside the motor protection shell. The motor output shaft passes through the motor protection shell, the insulation layer, the coolant storage layer and the protective film, and extends to the inside of the box body. The end of the motor output shaft is fixedly connected to the center position of the bottom end of the rotating disk.

[0013] Preferably, the top edge of the box shell is rotatably connected to the box cover through a hinge, two sets of lock buckles are symmetrically arranged at the front end of the box cover, a sealing layer is arranged under the box cover, and a handle is fixedly connected at the center position of the upper surface of the box cover.

[0014] Preferably, a first slide groove is provided at the bottom edge of the rotating disk, the first slide groove is fixedly connected to the bottom of the rotating disk, the first slider is slidably connected to the first slide groove, the bottom end of the first slider passes through the protective film, the coolant storage layer and the insulation layer, and the bottom end of the first slider is fixedly connected to the inner side surface of the bottom end of the box shell.

[0015] Preferably, a second slide groove is provided in the middle of the side of the rotating disk, the second slide groove is fixedly connected to the side of the rotating disk, the second slider is slidably connected to the second slide groove, the bottom of the second slider passes through the protective film, the coolant storage layer and the insulation layer, and the bottom of the second slider is fixedly connected to the side of the box shell.

[0016] Preferably, a plurality of test tube grooves are provided on the upper surface of the rotating disk, and a fixing pin is provided on the outer surface of the rotating disk near the test tube grooves, the fixing pin is fixedly connected to the upper surface of the rotating disk, one end of the fixing belt is fixedly connected to the fixing pin, a plurality of through holes are provided on the surface of the fixing belt, and the fixing pin cooperates with the through holes.

[0017] Preferably, the inner side of the bottom end of the test tube slot is fixedly connected to the bottom end of the test tube cooling mechanism, a sponge block is arranged above the test tube cooling mechanism, and the sponge block is fixedly connected to the inner wall of the test tube slot.

[0018] Preferably, the test tube cooling mechanism includes a cooling mechanism shell, a spring, a first magnet, a second magnet, a movable block, an air vent and a sealing ring. The spring is fixedly connected to the inner side of the bottom end of the cooling mechanism shell, and the top of the spring is fixedly connected to the movable block. A hole is provided at the top of the cooling mechanism shell, and the top of the movable block cooperates with the hole, and the top of the movable block is higher than the upper surface of the cooling mechanism shell. The bottom edge of the movable block is fixedly connected to the second magnet, and a first magnet is provided directly above the second magnet. The top of the first magnet is fixedly connected to the inner side of the top of the cooling mechanism shell. The air vent is provided on the upper surface of the cooling mechanism shell, and the air vent is provided between the top of the movable block and the first magnet. The first magnet and the second magnet have different magnetic poles, and a sealing ring is provided at the connection between the movable block and the top surface of the cooling mechanism shell.

[0019] Preferably, the fixing belt is made of elastic material.

[0020] Compared with the prior art, the present invention provides a stem cell refrigerator, which has the following beneficial effects:

[0021] 1. The present invention can fix the test tube in the test tube slot by providing a sponge block, a fixing belt and a fixing pin, thereby reducing the shaking of the test tube during transportation and reducing the damage rate of the test tube;

[0022] 2. The present invention provides a rotating disk, which can evenly cool the test tubes when the rotating disk rotates, thereby reducing the possibility of reduced activity of stem cells during transportation, improving the use value of the stem cell refrigerator, and also improving the practicality of the stem cell refrigerator;

[0023] 3. The fixing belt of the present invention is made of elastic material and has a plurality of through holes on its surface. The user can adjust the relative positions of the through holes on the surface of the fixing belt and the fixing pins according to the thickness of different test tubes, thereby improving the practicality of the stem cell refrigerator.

[0024] 4. The present invention provides a test tube cooling mechanism. When a test tube is placed in the test tube slot, the test tube cooling mechanism releases a coolant to quickly keep the test tube in the test tube slot at a low temperature. When the user needs to take the test tube, the fixing belt is opened and the test tube pops up, making it more convenient to take the test tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a stem cell refrigerator of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall cross-sectional structure of a stem cell refrigerator of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of a rotating disk of a stem cell refrigerator of the present invention;

[0028] Figure 4 This is a schematic diagram of a static cross-sectional structure of a test tube tank of a stem cell refrigerator of the present invention;

[0029] Figure 5 This is a schematic diagram of the cross-sectional structure of a test tube tank motion in a stem cell refrigerator of the present invention;

[0030] Figure 6 This is a schematic diagram of a stationary structure of a stem cell refrigerator fixing belt of the present invention;

[0031] Figure 7 This is a schematic diagram of the motion structure of a fixed belt of a stem cell refrigerator of the present invention.

[0032] In the figure: box body 1, handle 11, lock 12, insulation layer 13, coolant storage layer 14, sealing layer 15, protective film 16, motor 17, motor protection shell 18, box body shell 19, box cover 110, rotating disk 2, first slider 21, first slide groove 22, second slider 23, second slide groove 24, fixing belt 25, fixing pin 26, test tube groove 27, sponge block 28, test tube cooling mechanism 29, cooling mechanism shell 291, spring 292, first magnet 293, second magnet 294, movable block 295, air vent 296, sealing ring 297, through hole 251, test tube 3. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In this embodiment, Figure 1-7 As shown, a stem cell refrigerator comprises a box body 1 and a rotating disk 2, the box body 1 comprises a handle 11, a lock 12, a heat preservation layer 13, a coolant storage layer 14, a sealing layer 15, a protective film 16, a motor 17, a motor protection shell 18, a box body shell 19 and a box cover 110, the rotating disk 2 comprises a first slider 21, a first slide groove 22, a second slider 23, a second slide groove 24, a fixing belt 25, a fixing pin 26, a test tube groove 27, a sponge block 28 and a test tube cooling device 29, the bottom end and the inner side surface of the box body shell 19 are provided with a heat preservation layer 13, the inner side of the heat preservation layer 13 is provided with a coolant storage layer 14, the inner side of the coolant storage layer 14 is provided with a protective film 16, and the inner side of the protective film 16 is provided with a rotating disk 2.

[0035] The first slide groove 22 is an annular structure, the second slide groove 24 is an annular structure, and the rotating disk 2 is set to be cylindrical.

[0036] A motor protection shell 18 is provided at the center position of the bottom end of the box body 1, and a motor 17 is fixedly installed at the center position inside the motor protection shell 18. The output shaft of the motor 17 passes through the motor protection shell 18, the insulation layer 13, the coolant storage layer 14 and the protective film 16, and extends to the inside of the box body 1. The end of the output shaft of the motor 17 is fixedly connected to the center position of the bottom end of the rotating disk 2.

[0037] The top edge of the box shell 19 is connected to the box cover 110 by a hinge. Two sets of lock buckles 13 are symmetrically arranged at the front end of the box cover 110. A sealing layer 15 is arranged under the box cover 110. The handle 11 is fixedly connected to the center of the upper surface of the box cover 110.

[0038] A first slide groove 22 is provided at the bottom edge of the rotating disk 2, the first slide groove 22 is fixedly connected to the bottom of the rotating disk 2, the first slider 21 is slidably connected to the first slide groove 22, the bottom end of the first slider 21 passes through the protective film 16, the coolant storage layer 14 and the insulation layer 13, and the bottom end of the first slider 21 is fixedly connected to the inner side surface of the bottom end of the box shell 19.

[0039] A second slide groove 24 is arranged in the middle of the side of the rotating disk 2, the second slide groove 24 is fixedly connected to the side of the rotating disk 2, the second slider 23 is slidably connected to the second slide groove 24, the bottom of the second slider 23 passes through the protective film 16, the coolant storage layer 14 and the insulation layer 13, and the bottom of the second slider 23 is fixedly connected to the side of the box shell 19.

[0040] Specifically, the top edge of the box shell 19 is rotatably connected to the box cover 110 through a hinge, two sets of lock buckles 13 are symmetrically arranged at the front end of the box cover 110, a sealing layer 15 is arranged below the box cover 110, the center position of the upper surface of the box cover 110 is fixedly connected to the handle 11, the end of the output shaft of the motor 17 is fixedly connected to the bottom center position of the rotating disk 2, a first slide groove 22 is arranged at the bottom edge of the rotating disk 2, the first slide groove 22 is fixedly connected to the bottom of the rotating disk 2, the first slider 21 is slidably connected to the first slide groove 22, the second slider 23 is slidably connected to the second slide groove 24, The motor 17 is started, and the output shaft of the motor 17 drives the rotating disk 2 to rotate at a constant speed. By providing the heat preservation layer 13 and the protective film 16, the cold air generated in the coolant storage layer 14 is not easily dispersed. The sealing layer 15 is provided to prevent the external air from entering the refrigerator during the transportation of the stem cells and infecting the stem cells. The first slide groove 22 is an annular structure, and the second slide groove 24 is an annular structure. The rotating disk 2 is set to be cylindrical, so that the motor 17 drives the rotating disk 2 to rotate more stably, and the test tubes 3 inside the rotating disk 2 can be cooled evenly to maintain the cell activity.

[0041] In this embodiment, a plurality of test tube grooves 27 are provided on the upper surface of the rotating disk 2, and a fixing pin 26 is provided on the outer surface of the rotating disk 2 near the test tube groove 27. The fixing pin 26 is fixedly connected to the upper surface of the rotating disk 2. One end of the fixing belt 25 is fixedly connected to the fixing pin 26. A plurality of through holes 251 are provided on the surface of the fixing belt 25, and the fixing pin 26 cooperates with the through holes 251.

[0042] The bottom end of the test tube slot 27 is fixedly connected to the bottom end of the test tube cooling mechanism 29 . A sponge block 28 is arranged above the test tube cooling mechanism 29 . The sponge block 28 is fixedly connected to the inner wall of the test tube slot 27 .

[0043] The test tube cooling mechanism 29 includes a cooling mechanism housing 291, a spring 292, a first magnet 293, a second magnet 294, a movable block 295, a vent hole 296 and a sealing ring 297. The inner side of the bottom end of the cooling mechanism housing 291 is fixedly connected to the spring 292, and the top end of the spring 292 is fixedly connected to the movable block 295. The top end of the cooling mechanism housing 291 is provided with a hole, and the top end of the movable block 295 matches the hole, and the top end of the movable block 295 is higher than the upper surface of the cooling mechanism housing 291. The bottom of the movable block 295 is fixedly connected to the upper surface of the cooling mechanism housing 291. The end edge is fixedly connected to the second magnet 294, and the first magnet 293 is arranged directly above the second magnet 294. The top of the first magnet 293 is fixedly connected to the inner side of the top of the cooling mechanism shell 291, and the air hole 296 is arranged on the upper surface of the cooling mechanism shell 291. The air hole 296 is arranged between the top of the movable block 295 and the first magnet 293. The magnetic poles of the first magnet 293 and the second magnet 294 are different. A sealing ring 297 is arranged at the connection between the movable block 295 and the top surface of the cooling mechanism shell 291.

[0044] The fixing belt 25 is made of elastic material.

[0045] Specifically, the user opens the lock 12, opens the box cover 110 through the handle 11, takes out the sealing layer 15, and puts the test tube 3 into the test tube slot 27. The sponge block 28 is arranged inside the test tube slot 27 to reduce the shaking of the test tube 3 during transportation. The upper surface of the rotating disk 2 is provided with a fixing belt 25 and a fixing pin 26. The user can adjust the relative position of the through hole 251 on the surface of the fixing belt 25 and the fixing pin 26 according to the thickness of different test tubes 3, so as to fix the test tube 3 and improve the practicality of the stem cell refrigerator. At the same time, the bottom end of the test tube 3 presses the movable block 295 downward, and the movable block 295 drives the second magnet 294 to move downward. The magnet 293 is separated from the second magnet 294, and the coolant inside the test tube cooling mechanism 29 is released through the air vent 296, so that the test tube 3 inside the test tube slot 27 is quickly kept in a low temperature state. When the user needs to take the test tube 3, the fixing belt 25 is manually opened. At this time, the movable block 295 moves upward under the action of the spring 292. The first magnet 293 and the second magnet 294 are adsorbed together because of the same magnetic poles, and the air vent 296 no longer releases the coolant. At the same time, the movable block 295 drives the test tube 3 to bounce upward, and the user can take the test tube 3 more conveniently. The fixing belt 25 is made of elastic material, which can reduce the wear on the outer surface of the test tube 3.

[0046] Working principle: the user opens the lock 12, opens the box cover 110 through the handle 11, takes out the sealing layer 15, and puts the test tube 3 into the test tube slot 27. A sponge block 28 is arranged inside the test tube slot 27 to reduce the shaking of the test tube 3 during transportation. A fixing belt 25 and a fixing pin 26 are arranged on the upper surface of the rotating disk 2. The user can adjust the relative position of the through hole 251 on the surface of the fixing belt 25 and the fixing pin 26 according to the thickness of different test tubes 3, so as to fix the test tube 3 and improve the practicality of the stem cell refrigerator. At the same time, the bottom end of the test tube 3 presses the movable block 295 downward, and the movable block 295 drives the second magnet 294 to move downward, and the first magnet 293 separates from the second magnet 294. The coolant inside the test tube cooling mechanism 29 is released through the air vent 296, so that the test tube 3 inside the test tube slot 27 quickly maintains a low temperature state. The user adds coolant to the coolant storage layer 14, puts on the sealing layer 15, covers the box cover 110, buckles the lock 12, and starts the motor. 17, the output shaft of the motor 17 drives the rotating disk 2 to rotate at a uniform speed. By setting the insulation layer 13 and the protective film 16, the cold air generated in the coolant storage layer 14 is not easy to disperse. The sealing layer 15 is set to prevent the external air from entering the refrigerator during the transportation of stem cells and infecting the stem cells. The first slide groove 22 is an annular structure, the second slide groove 24 is an annular structure, and the rotating disk 2 is set to a cylindrical shape, so that the motor 17 drives the rotating disk 2 to rotate more stably, and the test tube 3 inside the rotating disk 2 can be cooled evenly to maintain cell activity. When the user needs to take the test tube 3, the fixing belt 25 is manually opened. At this time, the movable block 295 moves upward under the action of the spring 292, and the first magnet 293 and the second magnet 294 are adsorbed together because of the same magnetic poles, and the air vent 296 no longer releases the coolant. At the same time, the movable block 295 drives the test tube 3 to bounce upward, and the user is more convenient to take the test tube 3. The fixing belt 25 is made of elastic material, which can reduce the wear of the outer surface of the test tube 3.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stem cell refrigerator, comprising a box body (1) and a rotating disk (2), characterized in that: The box body (1) comprises a handle (11), a lock (12), a heat-insulating layer (13), a coolant storage layer (14), a sealing layer (15), a protective film (16), a motor (17), a motor protection shell (18), a box body shell (19) and a box cover (110); the rotating disk (2) comprises a first slider (21), a first slide groove (22), a second slider (23), a second slide groove (24), a fixing belt (25), a fixing pin (26), a test tube groove (27), a sponge block (28) and a test tube cooling mechanism (29); the bottom end and the inner side surface of the box body shell (19) are both provided with a heat-insulating layer (13); the inner side of the heat-insulating layer (13) is provided with a coolant storage layer (14); the inner side of the coolant storage layer (14) is provided with a protective film (16); and the inner side of the protective film (16) is provided with a rotating disk (2); The first slide groove (22) is an annular structure, the second slide groove (24) is an annular structure, and the rotating disk (2) is configured to be cylindrical; A motor protection shell (18) is provided at the center of the bottom end of the box body (1), and a motor (17) is fixedly installed at the center of the inside of the motor protection shell (18). The output shaft of the motor (17) passes through the motor protection shell (18), the thermal insulation layer (13), the coolant storage layer (14) and the protective film (16), and extends to the inside of the box body (1), and the end of the output shaft of the motor (17) is fixedly connected to the center of the bottom end of the rotating disk (2); The top edge of the box shell (19) is rotatably connected to a box cover (110) via a hinge, two sets of lock buckles (13) are symmetrically arranged at the front end of the box cover (110), a sealing layer (15) is arranged below the box cover (110), and a handle (11) is fixedly connected to the center of the upper surface of the box cover (110); The bottom edge of the rotating disk (2) is provided with a first slide groove (22), the first slide groove (22) is fixedly connected to the bottom of the rotating disk (2), the first slider (21) is slidably connected to the first slide groove (22), the bottom end of the first slider (21) passes through the protective film (16), the coolant storage layer (14) and the thermal insulation layer (13), and the bottom end of the first slider (21) is fixedly connected to the inner side surface of the bottom end of the box shell (19); A second slide groove (24) is provided in the middle of the side surface of the rotating disk (2), the second slide groove (24) is fixedly connected to the side surface of the rotating disk (2), the second slider (23) is slidably connected to the second slide groove (24), the bottom of the second slider (23) passes through the protective film (16), the coolant storage layer (14) and the thermal insulation layer (13), and the bottom of the second slider (23) is fixedly connected to the side surface of the box shell (19); The upper surface of the rotating disk (2) is provided with a plurality of test tube grooves (27); a fixing pin (26) is provided on the outer surface of the rotating disk (2) near the test tube grooves (27); the fixing pin (26) is fixedly connected to the upper surface of the rotating disk (2); one end of the fixing belt (25) is fixedly connected to the fixing pin (26); a plurality of through holes (251) are provided on the surface of the fixing belt (25); the fixing pin (26) matches the through holes (251); The inner side of the bottom end of the test tube slot (27) is fixedly connected to the bottom end of the test tube cooling mechanism (29); a sponge block (28) is arranged above the test tube cooling mechanism (29); and the sponge block (28) is fixedly connected to the inner wall of the test tube slot (27); The test tube cooling mechanism (29) comprises a cooling mechanism shell (291), a spring (292), a first magnet (293), a second magnet (294), a movable block (295), an air vent (296) and a sealing ring (297). The inner side of the bottom end of the cooling mechanism shell (291) is fixedly connected to the spring (292), and the top end of the spring (292) is fixedly connected to the movable block (295). The top end of the cooling mechanism shell (291) is provided with a hole, and the top end of the movable block (295) matches the hole. The top end of the movable block (295) is higher than the upper surface of the cooling mechanism shell (291). The movable block (295) ) The bottom edge is fixedly connected to a second magnet (294), a first magnet (293) is arranged directly above the second magnet (294), the top of the first magnet (293) is fixedly connected to the inner side of the top of the cooling mechanism shell (291), the air vent (296) is arranged on the upper surface of the cooling mechanism shell (291), the air vent (296) is arranged between the top of the movable block (295) and the first magnet (293), the first magnet (293) and the second magnet (294) have different magnetic poles, and a sealing ring (297) is arranged at the connection between the movable block (295) and the top surface of the cooling mechanism shell (291); The fixing belt (25) is made of elastic material; The user opens the lock buckle (12), opens the box cover (110) through the handle (11), takes out the sealing layer (15), and puts the test tube (3) into the test tube slot (27). A sponge block (28) is arranged inside the test tube slot (27) to reduce the shaking of the test tube (3) during transportation. A fixing belt (25) and a fixing pin (26) are arranged on the upper surface of the rotating disk (2). The user can adjust the relative position of the through hole (251) on the surface of the fixing belt (25) and the fixing pin (26) according to the thickness of different test tubes (3), thereby fixing the test tube (3); At the same time, the bottom end of the test tube (3) presses the movable block (295) downward, and the movable block (295) drives the second magnet (294) to move downward, so that the first magnet (293) and the second magnet (294) are separated, and the coolant inside the test tube cooling mechanism (29) is released through the air vent (296), so that the test tube (3) inside the test tube slot (27) quickly maintains a low temperature state. The user adds coolant to the coolant storage layer (14), puts on the sealing layer (15), and then covers the box cover (110), buckles the lock (12), and starts the motor (17). The output shaft of the motor (17) drives the rotating disk (2) to rotate at a constant speed. By providing the heat preservation layer (13) and the protective film (16), the cold air generated in the coolant storage layer (14) is not easily dispersed. The sealing layer (15) is provided to prevent the external air from entering the refrigerator during the transportation of the stem cells and infecting the stem cells. The first chute (22) is an annular structure, the second chute (24) is an annular structure, and the rotating disk (2) is set to be cylindrical, so that the motor (17) drives the rotating disk (2) to rotate more stably. The test tube (3) inside the rotating disk (2) is ) can be cooled evenly to maintain cell activity. When the user needs to take the test tube (3), the fixing belt (25) is manually opened. At this time, the movable block (295) moves upward under the action of the spring (292). The first magnet (293) and the second magnet (294) are attracted together because of the same magnetic poles. The air vent (296) no longer releases coolant. At the same time, the movable block (295) drives the test tube (3) to bounce upward, making it more convenient for the user to take the test tube (3). The fixing belt (25) is made of elastic material, which can reduce the wear of the outer surface of the test tube (3).

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