Sampling and positioning assembly for liquid nitrogen container

Abstract

The utility model discloses a liquid nitrogen tank sampling and positioning assembly which comprises a liquid nitrogen tank body and a plurality of cryopreservation frames which are arranged in the liquid nitrogen tank body and are used for storing sample boxes, and further comprises an extraction unit which comprises a pull block used for pulling the sample boxes out of the cryopreservation frames; the lifting unit comprises a bearing disc which is positioned below the pull block and is used for bearing the sample box pulled out by the pull block, and a lifting rod which is arranged at the upper end of the bearing disc and is used for taking the bearing disc filled with the sample box out of the liquid nitrogen tank body. The pulling block is moved into the pulling frame by adjusting the pulling unit, the pulling unit is pulled, the pulling unit is matched with the pulling frame through the pulling block to pull the sample box into the bearing disc from the storage groove, then the lifting rod is pulled upwards, and the lifting rod takes the sample box out of the liquid nitrogen tank body through the bearing disc. In the whole sample box taking-out process, the bearing disc supports the sample box all the time, and the sample box is prevented from toppling over or falling into the liquid nitrogen tank.

Description

Technical Field

[0001] This utility model relates to the field of liquid nitrogen tank sampling technology, specifically to a liquid nitrogen tank sampling and positioning component. Background Technology

[0002] When removing cryopreservation boxes from cryopreservation racks placed inside liquid nitrogen tanks, since each cryopreservation rack contains multiple cryopreservation boxes arranged from top to bottom, directly removing the cryopreservation rack from the liquid nitrogen tank and then extracting the cryopreservation boxes from the rack can easily cause thermal shock to the samples in the other cryopreservation boxes inside the rack. Therefore, it is common practice to extend a gripper from the opening of the liquid nitrogen tank into the cryopreservation rack to remove the corresponding layer samples from the cryopreservation rack.

[0003] However, it is difficult to accurately grasp the cryopreservation box in the liquid nitrogen tank in the deep cryogenic environment by manually using a gripper. This can easily lead to sample collision or tipping, and there is also the possibility of improper gripping force, causing the sample box to fall into the liquid nitrogen tank during the retrieval process.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Utility Model Content

[0005] The purpose of this invention is to provide a liquid nitrogen tank sampling and positioning component to solve the problems mentioned in the background art regarding the liquid nitrogen tank sampling process, which involves the easy tipping of the cryopreservation box during handling and the easy for the sample box to fall into the liquid nitrogen tank during the removal process.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The liquid nitrogen tank sampling and positioning assembly includes a liquid nitrogen tank body, multiple cryopreservation racks for storing sample boxes disposed inside the liquid nitrogen tank body, and further includes:

[0008] The extraction unit includes a pull block for pulling out the sample box from the cryopreservation rack;

[0009] The extraction unit includes a support plate located below the pull block for carrying the sample box that is pulled out by the pull block, and a lifting rod located at the upper end of the support plate for bringing the support plate containing the sample box out of the liquid nitrogen tank body.

[0010] Furthermore, the cryopreservation rack is provided with multiple storage slots at equal intervals from top to bottom for accommodating cryopreservation boxes;

[0011] The upper end of the cryopreservation rack is fixedly connected to a lifting rod that hangs at the opening of the liquid nitrogen tank body;

[0012] The cryopreservation rack is fixedly connected to the opening end of the storage tank with a support block corresponding to each storage tank. The distance between the upper end of the support block and the lower end of the corresponding storage tank is equal to the thickness of the bottom of the support plate, which is used to transfer the sample box from the storage tank to the support plate.

[0013] Furthermore, a pull-out frame for engaging with a pull block is fixedly connected to one end of the sample box located at the opening of the storage slot;

[0014] The pull-out frame extends from the inside of the storage slot to the outside, and the middle of the support block has an opening for viewing the position of the pull-out frame.

[0015] Furthermore, the extraction unit also includes:

[0016] A connecting rod is fixedly connected to the upper end of the pull block. The connecting rod passes through the interior of the lifting rod. A guide groove is provided inside the lifting rod and outside the connecting rod to guide the movement adjustment of the connecting rod.

[0017] The push-pull rod is fixedly connected to the upper end of the connecting rod and away from the pull block, and is used to adjust the position of the connecting rod.

[0018] Furthermore, the proposing unit also includes:

[0019] A limiting frame is fixedly connected to one end of the lifting rod located on the push-pull rod, and is used to limit the push-pull rod. The push-pull rod is slidably connected inside the limiting frame.

[0020] Furthermore, a pull shaft is fixedly connected to one end of the push-pull rod relative to the lifting rod for adjusting the position of the push-pull rod.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This invention extends the sampling and positioning component into the liquid nitrogen tank, allowing the support plate to move to align with the side of the sample box to be retrieved. Subsequently, by adjusting the extraction unit, the pull block is moved into the pull frame. Pulling the extraction unit, the extraction unit, in cooperation with the pull block and the pull frame, pulls the sample box from the storage tank into the support plate. Then, the lifting rod is pulled upwards, and the lifting rod, through the support plate, brings the sample box out of the liquid nitrogen tank. Throughout the entire sample box retrieval process, the support plate supports the sample box, preventing it from tipping over or falling into the liquid nitrogen tank. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the liquid nitrogen tank body of this utility model;

[0025] Figure 3 This diagram illustrates the cooperation relationship between the extraction unit and the extraction unit of this utility model.

[0026] Figure 4 For the present utility model in Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This diagram shows the fit between the sample box and the cryopreservation rack of this utility model.

[0028] Figure 6 This is a schematic diagram illustrating the process of removing the sample box according to this utility model;

[0029] Figure 7 A schematic diagram of the unit structure of this utility model is provided.

[0030] Reference numerals: 100, Liquid nitrogen tank body; 101, Cryopreservation rack; 1011, Lifting rod; 1012, Storage tank; 102, Sample box; 1021, Pull-out frame; 103, Support block; 1, Lifting unit; 11, Lifting rod; 111, Guide groove; 12, Limiting frame; 13, Support plate; 2, Extraction unit; 21, Push-pull rod; 211, Pull shaft; 22, Connecting rod; 23, Pull block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-7 This utility model provides a technical solution:

[0033] The liquid nitrogen tank sampling and positioning assembly includes a liquid nitrogen tank body 100, multiple cryopreservation racks 101 for storing sample boxes 102 disposed inside the liquid nitrogen tank body 100, and further includes:

[0034] The extraction unit 2 includes a pull block 23 for pulling the sample box 102 out of the cryopreservation rack 101;

[0035] The lifting unit 1 includes a support plate 13 located below the pull block 23 for supporting the sample box 102 pulled out by the pull block 23, and a lifting rod 11 located at the upper end of the support plate 13 for bringing the support plate 13 containing the sample box 102 out of the liquid nitrogen tank body 100.

[0036] It should be noted that when removing the sample box 102 from the cryopreservation rack 101 inside the liquid nitrogen tank body 100, the sampling positioning component is extended into the liquid nitrogen tank body 100, so that the support plate 13 moves to correspond to the side of the sample box 102 to be removed. Then, by adjusting the extraction unit 2, the pull block 23 is moved into the pull frame 1021, and the extraction unit 2 is pulled. The extraction unit 2, through the pull block 23 and the pull frame 1021, pulls the sample box 102 from the storage tank 1012 into the support plate 13. Then, the lifting rod 11 is pulled upward, and the lifting rod 11 brings the sample box 102 out of the liquid nitrogen tank body 100 through the support plate 13. Throughout the entire process of removing the sample box 102, the support plate 13 always supports the sample box 102 to prevent the sample box 102 from tipping over or falling into the liquid nitrogen tank.

[0037] As an improvement, such as Figure 3-6 As shown, the cryopreservation rack 101 has multiple storage slots 1012 arranged at equal intervals from top to bottom to accommodate cryopreservation boxes;

[0038] The upper end of the cryopreservation rack 101 is fixedly connected to a lifting rod 1011 that is hung at the opening of the liquid nitrogen tank body 100;

[0039] The cryopreservation rack 101 is fixedly connected to the open end of the storage tank 1012 with a support block 103 corresponding to the storage tank 1012. The distance between the plane where the upper end of the support block 103 is located and the lower end of the corresponding storage tank 1012 is equal to the thickness of the bottom of the support plate 13, which is used to transfer the sample box 102 from the storage tank 1012 to the support plate 13.

[0040] Furthermore, such as Figure 5-6 As shown, the sample box 102 is fixedly connected to a pull-out frame 1021 for cooperating with the pull block 23 at one end of the opening of the storage slot 1012;

[0041] The pull-out frame 1021 extends from the inside of the storage slot 1012 to the outside, and the middle of the support block 103 is provided with an opening for viewing the position of the pull-out frame 1021.

[0042] Furthermore, such as Figure 4 , Figure 6 As shown, the extraction unit 2 further includes:

[0043] The connecting rod 22 is fixedly connected to the upper end of the pull block 23. The connecting rod 22 passes through the interior of the lifting rod 11. The lifting rod 11 is provided with a guide groove 111 inside and outside the connecting rod 22 for guiding the movement adjustment of the connecting rod 22.

[0044] The push-pull rod 21 is fixedly connected to the upper end of the connecting rod 22 and away from the pull block 23, and is used to adjust the position of the connecting rod 22.

[0045] Among them, such as Figure 7 As shown, the proposing unit 1 further includes:

[0046] The limiting frame 12 is fixedly connected to one end of the lifting rod 11 located on the push-pull rod 21, and is used to limit the push-pull rod 21. The push-pull rod 21 is slidably connected inside the limiting frame 12.

[0047] In addition, a pull shaft 211 is fixedly connected to one end of the push-pull rod 21 relative to the lifting rod 11 for adjusting the position of the push-pull rod 21.

[0048] It should be noted that the sample box 102 in this utility model contains a sample, which is not shown in the figure.

[0049] It should be noted that: in the specific implementation process of this utility model, if... Figure 2-6 As shown, when removing the sample box 102 from the cryopreservation rack 101 inside the liquid nitrogen tank body 100, a lifting rod 11 extends downwards along the inside of the liquid nitrogen tank body 100. The lifting rod 11 drives the support plate 13 and the push-pull rod 21 to move downwards synchronously until one end of the support plate 13 touches the upper end of the support block 103 corresponding to the sample box 102 to be removed. Then, the pull shaft 211 is grasped and the push-pull rod 21 is pushed along the guide groove 111 toward the pull-out frame 1021. The push-pull rod 21 drives the pull block 23 to move into the inner area of ​​the pull-out frame 1021 through the connecting rod 22. Above the field, push the pull shaft 211 downward. The pull shaft 211, through the push-pull rod 21 and the connecting rod 22, drives the pull block 23 to be inserted into the pull-out frame 1021. Then, pull the pull shaft 211 away from the lifting rod 11. The pull shaft 211, through the push-pull rod 21, drives the connecting rod 22 and the pull block 23 to pull the sample box 102 from the storage slot 1012 into the carrier plate 13, completing the work of exporting the sample box 102 from the storage slot 1012. By transitioning between the opening of the carrier plate 13 and the storage slot 1012, collisions or tipping of the sample box 102 during the export process are avoided.

[0050] like Figure 3 , Figure 6-7 As shown, after the sample box 102 is pulled to the upper end of the support plate 13, the lifting rod 11 is pulled upward. The lifting rod 11 uses the support plate 13 to pull the sample box 102 out of the liquid nitrogen tank body 100. Throughout the entire process of extracting the sample box 102, the support plate 13 always supports the lower end of the sample box 102 to ensure that the sample box 102 will not fall into the liquid nitrogen tank during the extraction process.

[0051] like Figure 4-5As shown, this utility model has an opening in the middle of the support block 103, which makes it easy for the operator to see through the opening of the liquid nitrogen tank body 100 to see whether the pull block 23 is inserted into the pull frame 1021 when the sample box 102 is taken out from top to bottom. This makes it easier to quickly insert the pull block 23 into the pull frame 1021 and improves the sampling efficiency.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A liquid nitrogen tank sampling and positioning assembly, comprising a liquid nitrogen tank body (100), and a plurality of cryopreservation racks (101) for storing sample boxes (102) disposed inside the liquid nitrogen tank body (100), characterized in that, Also includes: The extraction unit (2) includes a pull block (23) for pulling out the sample box (102) from the cryopreservation rack (101); The lifting unit (1) includes a support plate (13) located below the pull block (23) for carrying the sample box (102) pulled out by the pull block (23), and a lifting rod (11) located at the upper end of the support plate (13) for bringing the support plate (13) containing the sample box (102) out from the liquid nitrogen tank body (100).

2. The liquid nitrogen tank sampling and positioning assembly according to claim 1, characterized in that: The cryopreservation rack (101) has multiple storage slots (1012) arranged at equal intervals from top to bottom to accommodate cryopreservation boxes; The upper end of the cryopreservation rack (101) is fixedly connected to a lifting rod (1011) that is hung at the opening of the liquid nitrogen tank body (100); The cryopreservation rack (101) is fixedly connected to the open end of the storage tank (1012) with a support block (103) corresponding to the storage tank (1012). The distance between the plane of the upper end of the support block (103) and the lower end of the corresponding storage tank (1012) is equal to the thickness of the bottom of the support plate (13), which is used to transfer the sample box (102) from the storage tank (1012) to the support plate (13).

3. The liquid nitrogen tank sampling and positioning component according to claim 2, characterized in that: The sample box (102) is fixedly connected to a pull-out frame (1021) for cooperating with the pull block (23) at one end of the opening of the storage slot (1012); The pull-out frame (1021) extends from the inside of the storage slot (1012) to the outside, and the support block (103) has an opening in the middle for viewing the position of the pull-out frame (1021).

4. The liquid nitrogen tank sampling and positioning assembly according to claim 1, characterized in that: The extraction unit (2) further includes: A connecting rod (22) is fixedly connected to the upper end of the pull block (23). The connecting rod (22) passes through the interior of the lifting rod (11). The lifting rod (11) is provided with a guide groove (111) inside and outside the connecting rod (22) for guiding the movement adjustment of the connecting rod (22). The push-pull rod (21) is fixedly connected to the upper end of the connecting rod (22) and away from the pull block (23), and is used to adjust the position of the connecting rod (22).

5. The liquid nitrogen tank sampling and positioning assembly according to claim 1, characterized in that: The proposing unit (1) further includes: The limiting frame (12) is fixedly connected to one end of the lifting rod (11) located on the push-pull rod (21) and is used to limit the push-pull rod (21). The push-pull rod (21) is slidably connected inside the limiting frame (12).

6. The liquid nitrogen tank sampling and positioning assembly according to claim 4, characterized in that: The push-pull rod (21) is fixedly connected to a pull shaft (211) at one end relative to the lifting rod (11), which is used to adjust the position of the push-pull rod (21).

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