Liquid nitrogen fumigation box

Abstract

The liquid nitrogen fumigation box comprises a box body for storing liquid nitrogen, a box cover is hinged to one side of the top of the box body through a hinge, fumigation baskets are hung to the other three sides of the interior of the box body through hanging mechanisms, each hanging mechanism comprises a hook hung to the top of the box body, and one end of each hook is detachably connected with a hanging rod; the liquid nitrogen fumigation box comprises a box body, the box body is provided with a plurality of suspension rods, the suspension rods are connected with fumigation baskets through suspension rods with adjustable suspension heights, a plurality of fumigation holes are formed in the bottoms of the fumigation baskets at equal intervals, and the three fumigation baskets are suspended in the box body at equal heights or unequal heights. The freezing pipes are prevented from making direct contact with liquid nitrogen, the risk of sample loss is reduced, meanwhile, the hanging height of the fumigation basket can be adjusted according to needs, temperature balance of the freezing pipes at different positions in the fumigation process is achieved, and the consistency of the fumigation effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of medical appliances, in particular to a liquid nitrogen fumigation box. Background Art

[0002] At present, liquid nitrogen fumigation is often used for semen cryopreservation. The traditional fumigation method is to place the cryotubes containing semen on top of the liquid nitrogen tank for fumigation. However, this method has some shortcomings. First, the cryotubes are prone to fall from the rack into the liquid nitrogen, resulting in sample loss. Secondly, when multiple cryotubes need to be fumigated at the same time, due to the different positions of the cryotubes, the temperature difference between the upper and lower parts is large, resulting in an uneven fumigation effect. The temperature of the cryotubes at the bottom is lower, while the temperature of the cryotubes at the top is higher. The temperature imbalance may affect the cryopreservation quality of semen.

[0003] In addition, the traditional liquid nitrogen fumigation device lacks appropriate insulation and protection measures, and there are certain safety hazards during operation. Liquid nitrogen is extremely volatile. If it cannot be effectively insulated, it will not only increase the consumption of liquid nitrogen, but may also cause low-temperature burns to the operator. At the same time, due to the lack of necessary protective design, improper operation may cause liquid nitrogen to splash when taking and placing the cryotubes, posing a threat to the experimental environment and personnel safety. Therefore, it is necessary to develop a safer, more efficient and balanced liquid nitrogen fumigation box to meet the needs of semen cryopreservation. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects pointed out in the above background technology and provide a liquid nitrogen fumigation box to solve the above problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a liquid nitrogen fumigation box, comprising a box body storing liquid nitrogen, a box cover being hingedly connected to one side of the top of the box body by a hinge, and fumigation baskets being hung on the other three sides of the inside of the box body by a hanging mechanism; the hanging mechanism comprises a hook hung on the top of the box body, one end of the hook is detachably connected to a hanging rod, and the hanging rod is connected to the fumigation basket by a hanging rod with adjustable hanging height; a plurality of fumigation holes are equidistantly provided on the bottom of the fumigation basket, and three fumigation baskets are hung inside the box body at the same or different heights.

[0006] As a preferred embodiment of the present invention, a groove is provided in the middle of the front side of the box body, an insulation board made of aerogel composite insulation material is embedded in the groove, and a timer is embedded in the insulation board.

[0007] As a preferred embodiment of the present invention, handles are fixedly connected to both sides of the box body and the top of the box cover, a rubber heat-insulating and anti-skid pad is fixedly connected to the bottom of the box body, and a scale line marking the liquid nitrogen level is also marked on the inner side of the box body.

[0008] As a preferred embodiment of the present invention, the front and both sides of the box cover are provided with arc-shaped grooves, the grooves are sleeved on the outside of the top end of the hook, and the inner side of the grooves is also provided with a storage groove, the interior of the storage groove is connected to a silicone diaphragm, and the top of one end of the silicone diaphragm is fixedly connected to a strip protrusion placed on the outside of the storage groove.

[0009] As a preferred embodiment of the present invention, the end of the hook away from the hook head is L-shaped, and a buckle joint is hinged at the end through a limit hinge. The end of the hook away from the hook head passes through a connecting groove provided on the hanging rod and is locked by the buckle joint.

[0010] As a preferred embodiment of the present invention, a first strip groove is provided on the inner side of the hanging rod, and the first strip groove is buckled on the outside of the hook. A plurality of hanging holes are provided on the surface of the hanging rod, and one of the hanging holes is hung with a hook-shaped head at one end of the hanging rod.

[0011] As a preferred embodiment of the present invention, an L-shaped quick plug connector is fixedly connected to the outer side of one end of the hanging rod, and limiting plugs are fixedly connected to both sides of the quick plug connector. An L-shaped slot adapted to the size of the quick plug connector is provided on one side of the fumigation basket, and second strip grooves adapted to the size of the limiting plug are provided on both side walls of the L-shaped slot.

[0012] As a preferred embodiment of the present invention, an anti-slip sheet is fixedly connected to the inner side of the hook head of the hook, a pull ring is rotatably connected to one end of the hook head of the hook, and two rotation limiting cams are fixedly connected to the outside of the pull ring. When the pull ring and the hook form an angle of 90°, the cam abuts against the limiting teeth provided on both sides of the hook head of the hook.

[0013] As a preferred embodiment of the present invention, the box body and the box cover are both made of polyurethane insulation material, and the specification of the box body is 25cm*20cm*30cm.

[0014] As a preferred embodiment of the present invention, there are at least three hanging holes on the surface of the hanging rod, and the heights of the three hanging holes from the top to the bottom are 2 cm, 5 cm and 8 cm respectively from the box opening of the box body. The specifications of the fumigation basket are 8 cm*8 cm*2 cm, and 1-6 standard 2 ml cryotubes are placed inside the fumigation basket.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1) The liquid nitrogen fumigation box provided by the present invention adopts a reasonable structural design, and the fumigation basket is hung inside the box body through a hanging mechanism, so that the freezing tube is prevented from directly contacting the liquid nitrogen, and the risk of sample loss is reduced. At the same time, the hanging height of the fumigation basket can be adjusted as needed to achieve temperature balance of freezing tubes at different positions during the fumigation process, thereby ensuring the consistency of the fumigation effect. In addition, the present invention adopts a variety of insulation and protection measures to improve the safety of the fumigation process. The box body and the box cover are both made of polyurethane insulation material, which has good insulation performance and reduces the volatilization of liquid nitrogen and the loss of heat. The front of the box body is provided with an insulation board made of aerogel composite insulation material, which further enhances the insulation effect and prevents the timer from being damaged. The bottom of the box body is provided with a rubber insulation and anti-skid pad, which can prevent the fumigation box from sliding during operation, thereby improving stability and safety.

[0016] 2) The box cover of the present invention is connected to the box body by a hinge, which is convenient to open and close. Handles are provided on both sides of the box body and the top of the box cover, which is convenient for moving and carrying. A plurality of fumigation holes are provided at the bottom of the fumigation basket to ensure the uniform distribution of liquid nitrogen vapor. The specifications of the fumigation basket are adapted to standard 2ml cryotubes. Each fumigation basket can hold 1-6 cryotubes to meet the fumigation needs of different batches. Scale lines are marked on the inside of the box body to facilitate monitoring of the height of the liquid nitrogen level and avoid excessive or insufficient filling of liquid nitrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a structural schematic diagram of a liquid nitrogen fumigation box according to the present invention;

[0019] Figure 2 This is one of the structural schematic diagrams of a liquid nitrogen fumigation box according to the present invention;

[0020] Figure 3 This is a schematic diagram of the heat insulation board structure of a liquid nitrogen fumigation box according to the present invention;

[0021] Figure 4 This is a schematic diagram of the box cover structure of a liquid nitrogen fumigation box according to the present invention;

[0022] Figure 5 This is a schematic diagram of the internal structure of a liquid nitrogen fumigation box according to the present invention;

[0023] Figure 6 This is one of the schematic diagrams of the internal structure of a liquid nitrogen fumigation box according to the present invention;

[0024] Figure 7This is a schematic diagram of the structure of a hanging mechanism of a liquid nitrogen fumigation box according to the present invention;

[0025] Figure 8 This is a schematic diagram of a hook structure of a liquid nitrogen fumigation box according to the present invention;

[0026] Fig. 9 This is a schematic diagram of the structure of a hanging rod of a liquid nitrogen fumigation box according to the present invention;

[0027] Fig.10 A liquid nitrogen fumigation box according to the present invention Fig. 9 Enlarged schematic diagram at point A.

[0028] In the figure: 100, box body; 110, hinge; 120, groove; 130, heat insulation board; 140, handle; 150, rubber heat insulation and non-slip pad; 160, scale line; 200, box cover; 210, slot; 211, storage slot; 212, silicone diaphragm; 213, strip protrusion; 300, hanging mechanism; 310, hook; 311, limit hinge; 312, buckle joint; 3 13. Anti-slip sheet; 314. Pull ring; 315. Cam; 316. Limiting teeth; 320. Hanging rod; 321. Connecting groove; 322. First strip groove; 323. Hanging hole; 330. Hanging rod; 331. Quick plug connector; 332. Limiting insert; 400. Fumigation basket; 410. Fumigation hole; 420. L-shaped slot; 430. Second strip groove; 500. Timer. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-10 The present invention provides a technical solution: a liquid nitrogen fumigation box, comprising a box body 100 storing liquid nitrogen, a box cover 200 hingedly connected to one side of the top of the box body 100 by a hinge 110, and a fumigation basket 400 is hung on the other three sides of the box body 100 by a hanging mechanism 300;

[0031] The hanging mechanism 300 includes a hook 310 hung on the top of the box 100, one end of the hook 310 is detachably connected to a hanging rod 320, and the hanging rod 320 is connected to the fumigation basket 400 through a hanging rod 330 with adjustable hanging height;

[0032] A plurality of fumigation holes 410 are equidistantly formed at the bottom of the fumigation basket 400 , and three fumigation baskets 400 are hung inside the box 100 at the same or different heights.

[0033] Specifically, the fumigation box is composed of a box body 100, a box cover 200, a hanging mechanism 300 and a fumigation basket 400, wherein the box body 100 is used to store liquid nitrogen to provide a low-temperature environment for the fumigation process, the box cover 200 is hinged to one side of the top of the box body 100 through a hinge 110, and can be opened and closed to facilitate the placement and removal of the fumigation basket 400, and the hanging mechanism 300 is installed on three sides inside the box body 100, and is used to hang three fumigation baskets 400 at appropriate positions inside the box body 100.

[0034] The hanging mechanism 300 includes a hook 310, a hanging rod 320 and a hanging rod 330. The hook 310 is hung on the top of the box 100 to provide support for the hanging rod 320. One end of the hanging rod 320 is detachably connected to the hook 310, and the other end is connected to the fumigation basket 400 through the hanging rod 330. The hanging height of the hanging rod 330 can be adjusted, thereby changing the hanging height of the fumigation basket 400 to meet different fumigation requirements.

[0035] The fumigation basket 400 is used to place the cryotubes to be fumigated. A plurality of fumigation holes 410 are equidistantly provided at the bottom thereof so that the liquid nitrogen vapor can evenly contact the cryotubes to ensure the consistency of the fumigation effect. Three fumigation baskets 400 can be hung inside the box 100 at equal or different heights, and the height can be adjusted as needed to achieve a balanced temperature of the cryotubes at different positions.

[0036] When in use, first inject an appropriate amount of liquid nitrogen into the box 100, then hang the fumigation basket 400 equipped with the freezing pipe at an appropriate height inside the box 100 through the hanging mechanism 300, close the box cover 200, so that a relatively closed low-temperature environment is formed in the box, and the liquid nitrogen vapor fully contacts the freezing pipe through the fumigation hole 410 at the bottom of the fumigation basket 400, and fumigates and freezes it. By adjusting the height of the hanging rod 330, the hanging position of the fumigation basket 400 can be changed, thereby controlling the contact degree between the freezing pipe and the liquid nitrogen vapor, and realizing balanced temperature control. After fumigation is completed, open the box cover 200, take out the fumigation basket 400, and obtain the semen sample after fumigation and freezing.

[0037] In this embodiment, a groove 120 is opened in the middle of the front side of the box body 100 , an insulation board 130 made of aerogel composite insulation material is embedded in the groove 120 , and a timer 500 is embedded in the insulation board 130 .

[0038] Specifically, a groove 120 is provided in the middle of the front of the box 100, and an insulation board 130 made of aerogel composite insulation material is embedded in the groove 120. The aerogel material used in the insulation board 130 is an excellent insulation material with extremely low thermal conductivity and density, which can effectively block the transfer of heat. The timer 500 embedded in the groove 120 can prevent the timer 500 from being damaged due to low temperature, and also reduce the impact of the external environment on the fumigation process. The timer 500 is used to monitor and control the time of the fumigation process to ensure that the semen sample is properly fumigated and frozen. Before fumigation begins, the required fumigation time can be set through the timer 500. The timer 500 is integrated with the insulation board 130 and embedded in the groove 120, which is convenient for operation and does not affect the overall structure and aesthetics of the box 100. During the fumigation process, the timer 500 will display the fumigation time that has been carried out in real time, which is convenient for the operator to monitor the fumigation progress. When the set fumigation time is reached, the timer 500 will send a prompt signal to remind the operator that the fumigation process has been completed and the fumigation basket 400 and the freezing tube can be taken out. By setting the timer 500, the fumigation time can be accurately controlled to avoid excessive fumigation or insufficient fumigation, thereby ensuring the quality and activity of the semen sample.

[0039] In this embodiment, handles 140 are fixedly connected to both sides of the box body 100 and the top of the box cover 200, a rubber heat-insulating and anti-skid pad 150 is fixedly connected to the bottom of the box body 100, and a scale line 160 for marking the liquid nitrogen level is also marked on the inner side of the box body 100. Arc-shaped grooves 210 are provided on the front and both sides of the box cover 200. The grooves 210 are sleeved on the outside of the top of the hook 310, and a storage groove 211 is also provided on the inner side of the groove 210. A silicone diaphragm 212 is connected to the inside of the storage groove 211, and a strip protrusion 213 placed outside the storage groove 211 is fixedly connected to the top of one end of the silicone diaphragm 212.

[0040] Specifically, handles 140 are fixedly connected to both sides of the box body 100 and the top of the box cover 200. The handles 140 facilitate the movement and transportation of the liquid nitrogen fumigation box. Especially when the placement position needs to be changed or cleaning and maintenance is required, the operator can move the fumigation box by holding the handle 140, reducing the difficulties and risks during transportation. A rubber heat-insulating and anti-skid pad 150 is fixedly connected to the bottom of the box body 100. The rubber material has good heat-insulating properties, which can reduce the heat exchange between the liquid nitrogen fumigation box and the ground and improve the stability of the low-temperature environment in the box. At the same time, the rubber heat-insulating and anti-skid pad 150 increases the friction between the fumigation box and the ground, preventing it from sliding or displacing during use, thereby improving the safety of operation.

[0041] A scale line 160 is also marked on the inner side of the box body 100 for marking the liquid level of the liquid nitrogen. Through the scale line 160, the operator can intuitively monitor the liquid level of the liquid nitrogen in the box and judge whether liquid nitrogen needs to be replenished, thereby preventing excessive or insufficient liquid nitrogen from being added, thereby avoiding waste of liquid nitrogen and ensuring the stability of the low-temperature environment during the fumigation process.

[0042] The box cover 200 is provided with an arc-shaped slot 210 , which can accommodate the top end of the hook 310 in the slot 210 when the box cover 200 is opened, thereby preventing the hook 310 from interfering with the opening and closing of the box cover 200 , and also protecting the hook 310 .

[0043] A storage groove 211 is also provided on the inner side of the groove 210, and a silicone diaphragm 212 is connected to the inside of the storage groove 211. A strip protrusion 213 disposed outside the storage groove 211 is fixedly connected to the top of one end of the silicone diaphragm 212. When the box cover 200 is closed, the silicone diaphragm 212 can fit tightly with the top inner wall of the box body 100 to form a good sealing effect to prevent leakage of liquid nitrogen vapor. The strip protrusion 213 is located outside the storage groove 211, which is convenient for the operator to push the strip protrusion 213 to push the silicone diaphragm 212 into the storage groove 211 when opening the box cover 200, thereby smoothly opening the box cover 200.

[0044] In this embodiment, the end of the hook 310 away from the hook head is L-shaped, and a buckle joint 312 is hinged at the end through a limit hinge 311. The end of the hook 310 away from the hook head passes through a connecting groove 321 provided on the hanging rod 320 and is locked by the buckle joint 312.

[0045] Specifically, the end of the hook 310 away from the hook head is L-shaped, and a buckle joint 312 is hinged at the end through a limit hinge 311. The L-shaped design can increase the force-bearing area of ​​the connection between the hook 310 and the suspension rod 320, thereby improving the stability of the connection. At the same time, the buckle joint 312 hinged by the limit hinge 311 can conveniently connect the hook 310 and the suspension rod 320 together in a detachable manner. During the connection process, the end of the hook 310 away from the hook head passes through the connection groove 321 provided on the suspension rod 320, and then is locked by the buckle joint 312. The setting of the connection groove 321 allows the L-shaped end of the hook 310 to pass through and be fixed on the suspension rod 320, and the buckle joint 312 plays a role of locking and fixing, preventing the hook 310 and the suspension rod 320 from loosening or falling off during use. Through the design of the limit hinge 311 and the buckle joint 312, the operator can quickly and conveniently adjust the connection state of the hook 310 and the suspension rod 320 as needed;

[0046] The setting of the limit hinge 311 can limit the rotation angle of the buckle joint 312 to prevent it from rotating too much during the adjustment process and causing unstable connection. At the same time, the limit hinge 311 also plays a certain load-bearing role and can share the force at the connection between the hook 310 and the suspension rod 320, further improving the reliability of the connection.

[0047] In this embodiment, a first strip groove 322 is opened on the inner side of the hanging rod 320, and the first strip groove 322 is buckled on the outside of the hook 310. A plurality of hanging holes 323 are opened on the surface of the hanging rod 320, and one of the hanging holes 323 is hung with the hook head at one end of the hanging rod 330.

[0048] Specifically, a plurality of hanging holes 323 are provided on the surface of the hanging rod 320, one of which matches with the hook-shaped head at one end of the hanging rod 330. By providing a plurality of hanging holes 323 on the hanging rod 320, multi-level adjustment of the height of the hanging rod 330 can be achieved, thereby meeting the requirements of different fumigation heights. The operator can select an appropriate hanging hole 323 and the hook-shaped head of the hanging rod 330 for hanging according to actual conditions, and adjust the hanging height of the fumigation basket 400 to obtain the best fumigation effect;

[0049] One end of the hanging rod 330 is designed as a hook head, which matches the hanging hole 323, so that the hanging rod 330 can be easily hung at the designated position of the suspension rod 320. Moreover, the design of the hook head can also prevent the hanging rod 330 from sliding or falling off during use, thereby improving the stability and reliability of the connection.

[0050] By opening a plurality of hanging holes 323 on the hanging rod 320 and designing one end of the hanging rod 330 as a hook-shaped head matching the hanging hole 323, a multi-level adjustment function of the hanging height of the fumigation basket 400 is achieved, and the distance between the fumigation basket 400 and the liquid nitrogen surface can be accurately controlled according to different fumigation requirements, so as to obtain the best fumigation temperature and effect. At the same time, the first strip groove 322 opened on the inner side of the hanging rod 320 can be closely fitted with the hook 310, thereby improving the stability and reliability of the connection.

[0051] In this embodiment, an L-shaped quick connector 331 is fixedly connected to the outer side of one end of the hanging rod 330, and both sides of the quick connector 331 are fixedly connected to the limiting plug 332. An L-shaped slot 420 adapted to the size of the quick connector 331 is provided on one side of the fumigation basket 400, and the groove walls on both sides of the L-shaped slot 420 are provided with a second strip groove 430 adapted to the size of the limiting plug 332.

[0052] Specifically, an L-shaped quick connector 331 is fixedly connected to the outer side of one end of the hanging rod 330, and both sides of the quick connector 331 are fixedly connected to the limiting plug-in piece 332. The design of the L-shaped quick connector 331 can conveniently and quickly connect or disassemble the hanging rod 330 and the fumigation basket 400, thereby improving the efficiency of the operation. An L-shaped slot 420 that matches the size of the quick connector 331 is provided on one side of the fumigation basket 400, and second strip grooves 430 that match the size of the limiting plug-in piece 332 are provided on the groove walls on both sides of the L-shaped slot 420. When the fumigation basket 400 needs to be installed on the hanging rod 330, it is only necessary to insert the quick connector 331 into the L-shaped slot 420, and make the limiting plug-in piece 332 engage with the second strip groove 430 to achieve a quick and firm connection.

[0053] The design of the limiting insert 332 and the second strip groove 430 can limit the movement and rotation of the quick plug connector 331 in the L-shaped slot 420, prevent the connection from loosening or falling off, and improve the stability and reliability of the connection. At the same time, the appropriate connection method also facilitates the disassembly and replacement of the fumigation basket 400. When the fumigation basket 400 needs to be removed, it is only necessary to release the limiting insert 332 from the second strip groove 430 and pull the quick plug connector 331 out of the L-shaped slot 420.

[0054] By adopting an L-shaped quick plug connector 331 and an L-shaped slot 420 adapted thereto, and arranging limit inserts 332 on both sides of the quick plug connector 331, and opening a second strip groove 430 on the groove wall of the L-shaped slot 420, the fast disassembly and assembly and stable connection of the hanging rod 330 and the fumigation basket 400 are achieved, which greatly improves the operating convenience and connection reliability of the liquid nitrogen fumigation box, and provides a more efficient and safe technical guarantee for the semen freezing and storage process.

[0055] In this embodiment, an anti-slip sheet 313 is fixedly connected to the inner side of the hook head of the hook 310, a pull ring 314 is rotatably connected to one end of the hook head of the hook 310, and two rotation limiting cams 315 are fixedly connected to the outside of the pull ring 314. When the pull ring 314 and the hook 310 form an angle of 90°, the cam 315 abuts against the limiting teeth 316 provided on both sides of the hook head of the hook 310.

[0056] Specifically, an anti-skid sheet 313 is fixedly connected to the inner side of the hook head of the hook 310. The anti-skid sheet 313 can increase the contact friction between the hook 310 and the inner wall of the top of the box 100, preventing the hook 310 from sliding or falling off when subjected to external force, thereby improving the stability and reliability of the connection. A pull ring 314 is rotatably connected to one end of the hook head of the hook 310, and two cams 315 in a rotation limit state are fixedly connected to the outside of the pull ring 314. When the pull ring 314 and the hook 310 form an angle of 90°, the cam 315 and the limiting teeth 316 set on both sides of the hook head of the hook 310 abut against each other, thereby limiting the rotation range of the pull ring 314, making it convenient for personnel to pull the hook 310 from the box body 100 by pulling the pull ring 314, and then facilitating the hanging mechanism 300 together with the fumigation basket 400 to be quickly removed from the box body 100. When the hook head of the hook 310 is hung on the box body 100, the pull ring 314 is rotated to form an angle of 0° with the hook 310 to prevent the protruding pull ring 314 from causing scratches.

[0057] In this embodiment, the box body 100 and the box cover 200 are both made of polyurethane insulation material, and the specification of the box body 100 is 25cm*20cm*30cm.

[0058] Specifically, the body 100 and the box cover 200 are both made of polyurethane insulation material, which has excellent thermal insulation performance, low thermal conductivity and good mechanical strength, can effectively reduce the evaporation loss of liquid nitrogen and maintain the low temperature environment in the box. It also has good corrosion resistance and wear resistance, thereby extending the service life of the liquid nitrogen fumigation box.

[0059] The size of the box 100 is designed to be 25cm*20cm*30cm. This size design can meet the needs of conventional semen cryopreservation. It can provide sufficient storage space without being too large, and is easy to operate and place. Reasonable size design also helps to reduce liquid nitrogen consumption and improve fumigation efficiency.

[0060] In this embodiment, there are at least three hanging holes 323 on the surface of the hanging rod 320, and the heights of the three hanging holes 323 from top to bottom are 2 cm, 5 cm and 8 cm respectively from the box opening of the box body 100. The specifications of the fumigation basket 400 are 8 cm*8 cm*2 cm, and 1-6 standard 2 ml cryotubes are placed inside the fumigation basket 400.

[0061] Specifically, at least three hanging holes 323 are provided on the surface of the hanging rod 320, and the heights of the three hanging holes 323 from top to bottom are 2 cm, 5 cm and 8 cm respectively from the box opening of the box body 100. The design of the position of the hanging holes 323 can achieve three-level adjustment of the hanging height of the fumigation basket 400 to meet the fumigation requirements of different frozen tube samples.

[0062] By setting the hanging holes 323 at different heights, the operator can select the appropriate hanging hole 323 to adjust the hanging height of the fumigation basket 400 according to the characteristics and quantity of the cryotube samples. The hanging hole 323 2 cm away from the box opening is suitable for samples with higher temperature requirements, such as heat-sensitive semen samples, which can be brought closer to the liquid nitrogen surface to obtain a lower fumigation temperature. The hanging holes 323 5 cm and 8 cm away from the box opening are suitable for samples with relatively low temperature requirements. According to the number of samples and thermal sensitivity, the appropriate height can be selected for fumigation.

[0063] The size of the fumigation basket 400 is 8cm*8cm*2cm, which can accommodate 1-6 standard 2ml cryovials to meet the needs of conventional semen cryopreservation. Reasonable size design also helps to improve fumigation efficiency and uniformity, ensuring that each cryovial sample can obtain the appropriate fumigation temperature.

[0064] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid nitrogen fumigation box, comprising a box body (100) storing liquid nitrogen, characterized in that: A box cover (200) is hingedly connected to one side of the top of the box body (100) via a hinge (110), and a fumigation basket (400) is hung on the other three sides of the inside of the box body (100) via a hanging mechanism (300); The hanging mechanism (300) comprises a hook (310) hung on the top of the box (100), one end of the hook (310) is detachably connected to a hanging rod (320), and the hanging rod (320) is connected to the fumigation basket (400) via a hanging rod (330) with adjustable hanging height; The bottom of the fumigation basket (400) is provided with a plurality of fumigation holes (410) at equal intervals, and three fumigation baskets (400) are hung inside the box (100) at equal or different heights.

2. A liquid nitrogen fumigation box according to claim 1, characterized in that: A groove (120) is provided in the middle of the front side of the box body (100), a heat insulation board (130) made of aerogel composite heat insulation material is embedded in the groove (120), and a timer (500) is embedded in the heat insulation board (130).

3. A liquid nitrogen fumigation box according to claim 1, characterized in that: Both sides of the box body (100) and the top of the box cover (200) are fixedly connected with handles (140), the bottom of the box body (100) is fixedly connected with a rubber heat-insulating anti-skid pad (150), and the inner side of the box body (100) is also marked with a scale line (160) for marking the liquid nitrogen level.

4. A liquid nitrogen fumigation box according to claim 1, characterized in that: The front and both sides of the box cover (200) are provided with arc-shaped slots (210), the slots (210) are sleeved on the outside of the top end of the hook (310), and the inner side of the slot (210) is also provided with a receiving slot (211), the inside of the receiving slot (211) is connected with a silicone diaphragm (212), and the top of one end of the silicone diaphragm (212) is fixedly connected with a strip-shaped protrusion (213) arranged outside the receiving slot (211).

5. A liquid nitrogen fumigation box according to claim 1, characterized in that: The end of the hook (310) away from the hook head is L-shaped, and a buckle joint (312) is hinged at the end through a limit hinge (311); the end of the hook (310) away from the hook head passes through a connecting groove (321) provided on the hanging rod (320) and is locked through the buckle joint (312).

6. A liquid nitrogen fumigation box according to claim 1, characterized in that: The inner side of the hanging rod (320) is provided with a first strip groove (322), and the first strip groove (322) is buckled on the outside of the hook (310). The surface of the hanging rod (320) is provided with a plurality of hanging holes (323), and one of the hanging holes (323) is hung with a hook-shaped head at one end of the hanging rod (330).

7. A liquid nitrogen fumigation box according to claim 1, characterized in that: An L-shaped quick plug connector (331) is fixedly connected to the outer side of one end of the hanging rod (330), and both sides of the quick plug connector (331) are fixedly connected to limit plugs (332), and one side of the fumigation basket (400) is provided with an L-shaped slot (420) adapted to the size of the quick plug connector (331), and both side walls of the L-shaped slot (420) are provided with second strip grooves (430) adapted to the size of the limit plug (332).

8. The liquid nitrogen fumigation box according to claim 1, characterized in that: The inner side of the hook head of the hook (310) is fixedly connected with an anti-slip sheet (313); one end of the hook head of the hook (310) is rotatably connected with a pull ring (314); the outside of the pull ring (314) is fixedly connected with two rotation limiting cams (315); when the pull ring (314) and the hook (310) form an angle of 90°, the cam (315) abuts against limiting teeth (316) provided on both sides of the hook head of the hook (310).

9. The liquid nitrogen fumigation box according to claim 1, characterized in that: The box body (100) and the box cover (200) are both made of polyurethane heat-insulating material, and the specifications of the box body (100) are 25 cm*20 cm*30 cm.

10. A liquid nitrogen fumigation box according to claim 6, characterized in that: There are at least three hanging holes (323) on the surface of the hanging rod (320), and the heights of the three hanging holes (323) from the top to the bottom are 2 cm, 5 cm and 8 cm respectively from the box opening of the box body (100). The specifications of the fumigation basket (400) are 8 cm*8 cm*2 cm, and 1-6 standard 2 ml cryotubes are placed inside the fumigation basket (400).

Images