Liquid nitrogen tank capable of automatically storing liquid nitrogen

Abstract

The utility model relates to the technical field of liquid nitrogen tanks, in particular to a liquid nitrogen tank capable of automatically storing liquid nitrogen, which comprises a tank body, trundles arranged at the bottom of the tank body, a feed port arranged at the top of the tank body, a cover plug arranged on the feed port, a first driving rod rotatably arranged in the tank body, and a rotating disc arranged on the first driving rod. A plurality of placing openings are distributed in the circumference of the rotating disc in an array mode, cryopreservation frames are arranged in the placing openings, and the automatic storage assembly is arranged at the bottoms of the placing openings and used for automatically storing the cryopreservation frames; the cover opening assembly is arranged on the tank body and used for controlling opening and closing of the cover plug; by arranging the automatic storage assembly, when the cryopreservation frame is stored, the cover plug is opened firstly, then the cryopreservation frame is put down along the placing opening, the bottom of the cryopreservation frame is placed on the movable bracket, and then the cryopreservation frame is driven to move downwards under the rotation of the lead screw, so that the cryopreservation frame is completely stored in the tank body.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid nitrogen tanks, in particular to a liquid nitrogen tank capable of automatically storing liquid nitrogen. Background Art

[0002] Liquid nitrogen is a commonly used cryogenic liquid with a boiling point of -196°C. It can effectively preserve biological samples, material samples, etc. In automation scenarios, liquid nitrogen tanks are increasingly used, which can achieve long-term stable storage of samples to meet the needs of various experiments and research.

[0003] Existing liquid nitrogen tanks usually include a container for storing liquid nitrogen and a lid for taking and placing samples. In automated scenarios, some liquid nitrogen tanks are also equipped with automated rotating disks and freezing racks to facilitate sample storage and access. In addition, in order to reduce the evaporation rate of liquid nitrogen, some liquid nitrogen tanks use a double-layer lid.

[0004] Although the existing liquid nitrogen tanks have solved the problem of sample storage to a certain extent, there are still some problems and shortcomings. For example, in terms of sample delivery and storage, the existing liquid nitrogen tanks usually hang the freezing rack on a rotating rack. When the rotating disk rotates, it will cause a certain amount of shaking and poor stability. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned shortcomings and provide a liquid nitrogen tank which can automatically store liquid nitrogen.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A liquid nitrogen tank capable of automatic storage comprises a tank body, a bottom of the tank body is provided with casters, a top of the tank body is provided with a feed port, a cover plug is provided on the feed port, a first driving rod is rotatably provided in the tank body, a rotating disk is provided on the first driving rod, a plurality of placement ports are distributed in a circular array on the rotating disk, a freezing rack is provided in the placement port, and further comprises:

[0008] An automatic storage component, disposed at the bottom of the placement opening, for automatically storing the freezing rack;

[0009] The cover opening assembly is arranged on the tank body and is used to control the opening and closing of the cover plug.

[0010] Furthermore, the automatic storage assembly includes a vertical plate fixed to the bottom of the rotating disk, a fixing fixture is arranged at the top of the vertical plate, and a movable bracket slidably connected to the vertical plate is arranged at the bottom of the fixing fixture.

[0011] Furthermore, the fixing fixture includes a support platform fixed on the vertical plate, a first sliding rod is arranged inside the support platform, first clamping plates are arranged at both ends of the first sliding rod, a first limiting sliding block is arranged on the first clamping plate and is sleeved on the first sliding rod, and a through hole matching the freezing rack is also opened on the support platform.

[0012] Furthermore, the movable bracket includes a movable platform slidably connected to the vertical plate, a second slide bar is arranged in the movable platform, second clamping plates are arranged at both ends of the second slide bar, and a second limiting slider sleeved on the second slide bar is arranged on the second clamping plate.

[0013] Furthermore, a lead screw is rotatably arranged in the vertical plate, and a lifting slider sleeved on the lead screw is arranged at one end of the movable platform.

[0014] Furthermore, the lid opening assembly includes a fixed plate fixed on the tank body, a second driving rod is rotatably arranged inside the fixed plate, a flip frame is sleeved on the second driving rod, and one end of the flip frame away from the second driving rod is fixedly connected to the cover plug.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model is provided with an automatic storage component. When storing the freezing rack, the cover plug is first opened, and then the freezing rack is lowered along the placement opening, and the bottom of the freezing rack is placed on the movable bracket. Then, the freezing rack is driven to move downward under the rotation of the lead screw, so that the freezing rack is completely stored in the tank body. At this time, the top of the freezing rack is fixed by the fixing clamp at the upper end to maintain the stability of the freezing rack. When taking out, the fixing clamp is first opened, and then the freezing rack is lifted upward by the rotation of the lead screw. It is convenient and fast with high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

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

[0020] Figure 3 It is a structural schematic diagram of the automatic storage component of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the fixing fixture of the utility model;

[0022] Figure 5It is a structural schematic diagram of the movable bracket of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the cover opening assembly of the utility model.

[0024] In the figure: 1. tank body; 2. casters; 3. feeding port; 4. cover plug; 5. first driving rod; 6. rotating disk; 61. placement port; 7. freezing rack; 8. automatic storage component; 81. vertical plate; 82. fixing fixture; 821. supporting table; 822. first sliding rod; 823. first clamping plate; 824. first limiting slider; 83. movable bracket; 830. lifting slider; 831. movable table; 832. second sliding rod; 833. second clamping plate; 834. second limiting slider; 84. screw; 9. cover opening component; 91. fixing plate; 92. second driving rod; 93. flip rack. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] Reference Figure 1-Figure 6 As shown, a liquid nitrogen tank capable of automatic storage comprises a tank body 1, a caster 2 is arranged at the bottom of the tank body 1, a feed port 3 is arranged at the top of the tank body 1, a cover plug 4 is arranged on the feed port 3, a first driving rod 5 is rotatably arranged in the tank body 1, a control motor is arranged at the top of the first driving rod 5, a rotating disk 6 is arranged on the first driving rod 5, a plurality of placement ports 61 are distributed in a circular array on the rotating disk 6, a freezing rack 7 is arranged in the placement port 61, and further comprises:

[0028] The automatic storage component 8 is arranged at the bottom of the placement opening 61. After the freezing rack 7 is placed along the placement opening 61, the freezing rack 7 can be driven by the automatic storage component 8 to gradually move downward until it is completely stored in the tank body 1;

[0029] The cover opening assembly 9 is arranged on the tank body 1 and is used to control the opening and closing of the cover plug 4 , which is fully automated and improves the access to the freezing rack 7 .

[0030] In one embodiment, the automatic storage assembly 8 includes a vertical plate 81 fixed to the bottom of the rotating disk 6, a fixing fixture 82 is provided at the top of the vertical plate 81, and a movable bracket 83 slidably connected to the vertical plate 81 is provided at the bottom of the fixing fixture 82;

[0031] When storing the freezing rack 7, first put the freezing rack 7 along the placement opening 61, and the freezing rack 7 contacts the movable bracket 83, and the bottom of the freezing rack 7 is supported by the movable bracket 83. The bottom of the movable bracket 83 can also be set in the shape of a clamp, or a groove for fixing is opened. Then the movable bracket 83 moves downward along the vertical plate 81, thereby driving the freezing rack 7 to move downward, and the freezing rack 7 is stored in the tank body 1. Finally, the top of the freezing rack 7 is fixed and clamped by the fixing clamp 82 to maintain the stability of the freezing rack 7.

[0032] In one embodiment, the fixing fixture 82 includes a support platform 821 fixed on the vertical plate 81, first slide bars 822 are arranged on both sides of the support platform 821, first clamping plates 823 are arranged at both ends of the first slide bar 822, and first limit sliders 824 sleeved on the first slide bar 822 are arranged on the first clamping plates 823, and a through hole matching with the freezing rack 7 is also opened on the support platform 821;

[0033] The freezing rack 7 needs to pass through the middle of the support platform 821, so a through hole needs to be opened on the support platform 821. After the freezing rack 7 is completely placed, the first clamping plates 823 on both sides can be pushed to move inward to fix the top of the freezing rack 7. When taking out the freezing rack 7, the fixing clamp 82 needs to be opened first to facilitate the upward movement of the freezing rack 7.

[0034] In one embodiment, if the movable bracket 83 is also configured as a clamp, it specifically includes a movable platform 831 slidably connected to the vertical plate 81, a second slide bar 832 is disposed in the movable platform 831, and second clamping plates 833 are disposed at both ends of the second slide bar 832. The second clamping plates 833 are provided with a second limiting slider 834 sleeved on the second slide bar 832;

[0035] When placing the freezing rack 7, the freezing rack 7 first contacts the movable table 831, and then the second clamping plates 833 on both sides are pushed to move inward to fix and clamp the bottom end of the freezing rack 7, or it is directly set into a groove shape to facilitate placing the freezing rack 7 directly into the groove.

[0036] In one embodiment, a lead screw 84 is rotatably provided in the vertical plate 81, and a cryogenic motor for driving is provided at the top of the lead screw 84. The cryogenic motor is located at the top of the rotating disk 6, and an isolation layer for covering the cryogenic motor is also provided on the rotating disk 6. The material of the isolation layer is the same as that of the tank body 1, and the cryogenic motor is isolated from the liquid nitrogen, mainly to protect the cryogenic motor and prevent the cryogenic motor from being at too low a temperature. A lifting slider 830 is provided at one end of the movable platform 831 and is covered on the lead screw 84;

[0037] When storing the freezing rack 7, the bottom end of the freezing rack 7 is first fixed and clamped by the movable bracket 83, and then the freezing rack 7 can be driven downward by the movable bracket 83 by rotating the lead screw 84; and when taking out, the freezing rack 7 is also driven upward by the movable bracket 83.

[0038] In one embodiment, the lid opening assembly 9 includes a fixing plate 91 fixed to the tank body 1, a second driving rod 92 is rotatably arranged in the fixing plate 91, a small motor for driving the second driving rod 92 is arranged at one end of the second driving rod 92, a flip frame 93 is sleeved on the second driving rod 92, and an end of the flip frame 93 away from the second driving rod 92 is fixedly connected to the lid plug 4;

[0039] By rotating the second driving rod 92 , the cover plug 4 can be driven to flip upwards through the flip frame 93 , thereby opening the cover plug 4 .

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A liquid nitrogen tank capable of automatic storage, comprising a tank body (1), a caster (2) is arranged at the bottom of the tank body (1), a feed port (3) is arranged at the top of the tank body (1), a cover plug (4) is arranged on the feed port (3), a first drive rod (5) is rotatably arranged in the tank body (1), a rotating disk (6) is arranged on the first drive rod (5), a plurality of placement ports (61) are distributed in a circumferential array on the rotating disk (6), a freezing rack (7) is arranged in the placement port (61), and the characteristics are as follows: Also includes: An automatic storage component (8), arranged at the bottom of the placement opening (61), and used for automatically storing the freezing rack (7); The lid opening assembly (9) is arranged on the tank body (1) and is used to control the opening and closing of the lid plug (4).

2. The automatic storage liquid nitrogen tank according to claim 1, characterized in that: The automatic storage assembly (8) comprises a vertical plate (81) fixed to the bottom of the rotating disk (6), a fixing fixture (82) is arranged at the top of the vertical plate (81), and a movable bracket (83) slidably connected to the vertical plate (81) is arranged at the bottom of the fixing fixture (82).

3. The automatic storage liquid nitrogen tank according to claim 2, characterized in that: The fixing fixture (82) comprises a support platform (821) fixed on the vertical plate (81), a first sliding rod (822) is arranged inside the support platform (821), first clamping plates (823) are arranged at both ends of the first sliding rod (822), a first limiting sliding block (824) which is sleeved on the first sliding rod (822) is arranged on the first clamping plate (823), and a through hole which cooperates with the freezing rack (7) is also opened on the support platform (821).

4. The automatic storage liquid nitrogen tank according to claim 2, characterized in that: The movable bracket (83) comprises a movable platform (831) slidably connected to the vertical plate (81), a second sliding rod (832) is arranged inside the movable platform (831), second clamping plates (833) are arranged at both ends of the second sliding rod (832), and a second limiting sliding block (834) sleeved on the second sliding rod (832) is arranged on the second clamping plate (833).

5. The automatic storage liquid nitrogen tank according to claim 4, characterized in that: A lead screw (84) is rotatably arranged in the vertical plate (81), and a lifting slider (830) sleeved on the lead screw (84) is arranged at one end of the movable platform (831).

6. The automatic storage liquid nitrogen tank according to claim 1, characterized in that: The lid opening assembly (9) comprises a fixing plate (91) fixed on the tank body (1), a second driving rod (92) being rotatably arranged inside the fixing plate (91), a flip frame (93) being sleeved on the second driving rod (92), and an end of the flip frame (93) away from the second driving rod (92) being fixedly connected to the lid plug (4).

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