Narrow-mouth liquid nitrogen tank cryopreservation lifting basket convenient to rotate

Abstract

The utility model relates to the technical field of liquid nitrogen storage auxiliary devices, and particularly discloses a narrow-mouth liquid nitrogen tank cryopreservation basket convenient to rotate, the narrow-mouth liquid nitrogen tank cryopreservation basket convenient to rotate comprises a hanging assembly and a basket body, the hanging assembly comprises a stand column and a hanging handle rotationally connected to the upper end of the stand column, and a connecting block arranged in the longitudinal direction is welded to the lower end of the stand column; a supporting block is transversely welded to the lower end of the connecting block, a rotary supporting plate is movably connected to the longitudinal side wall of the connecting block, and a sliding groove is formed in the middle of the rotary supporting plate; the basket is slidably connected into the sliding groove of the rotary supporting plate, the upper end of the basket is fixedly connected with a connecting column with an internal thread in the vertical direction, the connecting column is arranged on the side, away from the stand column, of the basket, the upper end of the connecting column penetrates through the sliding groove, the connecting column is in threaded connection with a shifting rod, and the upper end of the shifting rod is provided with a connecting piece detachably connected with the stand column. The purpose of the utility model is to solve the problem that a basket which is placed later in an existing narrow-mouth liquid nitrogen freezing tank is easy to collide with a basket which is placed first in the rotating process.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid nitrogen storage auxiliary devices, and in particular to a narrow-mouth liquid nitrogen tank cryopreservation basket that is easy to rotate. Background Technology

[0002] Liquid nitrogen cryogenic tanks utilize the low-temperature properties of liquid nitrogen to achieve the cryopreservation of items; they are mainly used in the biomedical, food, and industrial fields; in the biomedical field, they are widely used in cell culture, tissue preservation, organ transplantation, and genetic engineering, and can preserve various biological samples such as blood, semen, embryos, and stem cells for a long time.

[0003] Liquid nitrogen cryogenic tanks include wide-mouth and narrow-mouth tanks. Wide-mouth tanks have a larger opening, allowing operators to easily insert their hands or larger sample containers for handling, making them particularly suitable for storing and retrieving large, irregularly shaped samples, such as large tissue samples or specially designed experimental apparatus. However, their larger surface area exposed to air allows heat to enter more easily, resulting in a relatively faster evaporation rate of liquid nitrogen. Even without frequent handling, the natural evaporation of liquid nitrogen is significant, requiring more frequent replenishment to maintain the cryogenic environment. Narrow-mouth tanks, on the other hand, have a smaller opening and limited contact area with air, effectively reducing heat transfer. This results in a slower evaporation rate, allowing them to maintain a cryogenic state for a longer period under the same initial liquid nitrogen volume and storage conditions, making them suitable for long-term liquid nitrogen storage and cryopreservation.

[0004] Existing narrow-mouth liquid nitrogen tanks have small openings, which also limit the size of the baskets that can be placed inside. The baskets consist of a basket and a hanging rod, with the lower end of the rod fixed to one side of the basket. To ensure full utilization of the liquid nitrogen within the tank, multiple baskets are typically placed at even intervals along the circumference of a narrow-mouth liquid nitrogen tank. The tank opening has several corresponding slots, usually 4-8. When placing the basket, the basket should face the center of the tank. After placement, the basket is rotated to face the inner wall of the tank, creating space in the center for the next basket. However, when several baskets are already in the tank, later baskets may collide with earlier ones during rotation, resulting in uneven distribution of biological samples between the later and earlier baskets, affecting cryopreservation efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, the present invention provides a convenient rotating narrow-mouth liquid nitrogen tank cryopreservation basket, which solves the problem that baskets placed later in existing narrow-mouth liquid nitrogen cryopreservation tanks are prone to colliding with baskets placed earlier during rotation.

[0006] To solve the above problems, the technical solution adopted by this utility model is: a convenient rotating narrow-mouth liquid nitrogen tank cryopreservation basket, including a hanging assembly and a basket. The hanging assembly includes a column and a hanging handle rotatably connected to the upper end of the column. A connecting block arranged longitudinally is welded to the lower end of the column. A support block is welded to the lower end of the connecting block along the transverse direction. A rotating support plate is movably connected to the longitudinal side wall of the connecting block. A sliding groove is opened in the middle of the rotating support plate. The basket is slidably connected in the sliding groove of the rotating support plate. A connecting column with internal threads is fixedly connected to the upper end of the basket in the vertical direction. The connecting column is located on the side of the basket away from the column. The upper end of the connecting column passes through the sliding groove. A magnetic block is provided on the side wall of the sliding groove away from the column. An iron sheet is fixed on the side wall of the connecting column near the magnetic block. A lever is threadedly connected to the connecting column. A connecting piece that can be detachably connected to the column is provided at the upper end of the lever.

[0007] The technical advantages and benefits of this solution are as follows: When placing baskets of half the capacity into a narrow-mouth liquid nitrogen freezing tank, the existing placement method is suitable because the tank has ample internal space. At this point, the baskets are not connected to levers, and the connecting post's iron plate is in contact with the magnet. The baskets face the center of the tank, and after placement, they are rotated to face the tank's inner wall. However, when subsequent baskets are placed, the limited internal space and spacing between baskets make it easy for them to collide with already placed baskets. Therefore, before placement, the lever is connected to the connecting post. The baskets face the center of the tank, and the lever then moves the baskets away from the magnet's limit, sliding them along the groove to the other end, bringing them closer to the tank's inner wall. The connecting post then limits the basket's position, preventing it from sliding to other positions. Therefore, there is no need to rotate the basket to bring it close to the inner wall of the tank. Instead, the basket is pushed close to the inner wall of the tank by using a lever, which reduces the risk of collision with the baskets already placed inside. This ensures that the materials to be frozen inside the baskets placed one after another do not shift too much, thus guaranteeing the freezing effect of the baskets.

[0008] Furthermore, the rotating support plate is hinged to the connecting block, and the hanging assembly also includes a flipping structure for flipping the rotating support plate upward. The flipping structure includes a slider, a connecting rod, a pull rod, and a limiting member. The slider is slidably connected to the column, the two ends of the connecting rod are respectively hinged to the slider and the rotating support plate, the lower end of the pull rod is fixedly connected to the slider, and the limiting member includes a limiting block fixedly connected to the upper end of the column and a moving block threadedly connected to the upper end of the pull rod. The limiting block is slidably connected to the pull rod, and the moving block is in contact with the upper surface of the limiting block.

[0009] By pulling the lever upwards, the slider moves upwards. Once in position, the slider is rotated downwards until it touches the limiting block, thus limiting the height of the lever and preventing it from sliding down. This controls the movement of the lever, causing the rotating support plate to flip upwards. When the lever moves the basket close to the inner wall of the tank, the lever is close to the column, thus not limiting the rotating plate. The lever then flips the rotating plate upwards, so that after the basket is placed in the liquid nitrogen freezing tank, the rotating plate does not occupy too much space in the middle of the liquid nitrogen freezing tank, facilitating the subsequent placement of the liquid nitrogen freezing tank body.

[0010] Furthermore, the connector includes a ring and a ring clamp fixed together. The ring is fixedly connected to the lever, and one end of the ring clamp is open, with the opening facing the column. This design features a simple connection structure. The ring clamp engages with the lever, achieving a detachable connection to the column. After the basket is moved into position using the lever, the connector limits the position of the basket by restricting its movement to the column.

[0011] Furthermore, two columns are arranged in parallel, and each of the two longitudinal sidewalls of the connecting block is provided with a rotating support plate. The two connecting rods of the two rotating support plates are respectively connected to the sliders of different columns. By using different connecting rods and pull rods, pulling up different pull rods can control the rotation of the rotating support plates on different sides to flip, thereby flipping the rotating support plate that is not connected to the basket to save space.

[0012] Furthermore, the upper end of the column is provided with a rotating ring, and the hook handle is fixedly connected to the rotating ring. The hook handle can be rotated 180° from one side to the other to match the position of the basket for hooking. The structure is simple and easy to install.

[0013] Furthermore, a strip-shaped through groove is formed in the middle of the connecting block, and both ends of the strip-shaped through groove are connected to one end of the sliding groove of each of the two rotating support plates. By setting the strip-shaped through groove, the basket can be moved from the current rotating support plate to another rotating support plate under the action of the lever, thereby expanding the movable range of the basket and facilitating flexible adjustment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of Example 1.

[0015] Figure 2 This is a diagram illustrating how the lever moves the basketball hoop to the other side.

[0016] Figure 3 This is a schematic diagram of real-time Example 2. Detailed Implementation

[0017] The following detailed description illustrates the specific implementation method:

[0018] The reference numerals in the accompanying drawings include: basket 1, connecting column 11, lever 12, column 2, hook handle 21, connecting block 22, support block 23, rotating support plate 24, slide 241, pull rod 242, slider 243, connecting rod 244, limit block 245, moving block 246, and connector 25.

[0019] Example 1 is basically as shown in the appendix. Figures 1-2 As shown: A conveniently rotating narrow-mouth liquid nitrogen tank cryopreservation basket includes a mounting assembly and a basket 1. The mounting assembly includes a column 2 and a mounting handle 21 rotatably connected to the upper end of the column 2. A connecting block 22 arranged longitudinally is welded to the lower end of the column 2. A support block 23 is welded transversely to the lower end of the connecting block 22. A rotating support plate 24 is rotatably connected to the longitudinal side wall of the connecting block 22. A sliding groove 241 is opened in the middle of the rotating support plate 24. The basket 1 is slidably connected to the sliding groove 241 of the rotating support plate 24. Inside 41, a threaded connecting post 11 is welded vertically to the upper end of the basket 1. The connecting post 11 is a square post, and the sliding groove 241 is a square groove. The connecting post 11 is located on the side of the basket 1 away from the upright post 2. The upper end of the connecting post 11 passes through the sliding groove 241. A magnetic block is provided on the side wall of the sliding groove 241 away from the upright post 2. An iron plate is fixed on the side wall of the connecting post 11 near the magnetic block. A lever 12 is threadedly connected to the connecting post 11, and the upper end of the lever 12 is provided with a connector 25 that can be engaged with the upright post 2. A rotating ring is provided at the upper end of the upright post 2. The hook handle 21 is hinged to the rotating ring, and the hook handle 21 can be rotated along the vertical plane.

[0020] When placing baskets of half the capacity into a narrow-mouth liquid nitrogen freezing tank, the baskets can be placed using the original method because there is sufficient space inside the tank. At this point, the baskets are not connected to the lever 242, and the iron plate of the connecting post 11 is in contact with the magnet. The baskets face the center of the liquid nitrogen freezing tank upon placement, and are then rotated to face the inner wall of the tank. However, when subsequent baskets are placed, the limited space inside the liquid nitrogen freezing tube and the limited gaps between baskets make it easy for them to collide with already placed baskets. Therefore, before placement, the lever 12 is connected to the connecting post 11, ensuring the baskets face the center of the tank. The lever 12 then moves the baskets away from the magnet's limit and slides them along the slide groove 241 to the other end, bringing them closer to the inner wall of the tank. The connecting piece 25 then limits the position of the post 2, preventing the baskets from sliding to other positions. Then rotate the hook handle 21 180° along the horizontal plane to the other side, so as to make it easier to hook the basket 1 onto the slot at the inlet of the liquid nitrogen freezing tank.

[0021] Therefore, there is no need to rotate the basket 1 to bring it close to the inner wall of the tank. By using the lever 12 to push the basket 1 close to the inner wall of the tank, it is less likely to collide with the basket 1 of the already placed basket. This ensures that the materials to be frozen inside the baskets placed one after another will not be displaced too much, thus ensuring the freezing effect of the basket.

[0022] The rotating support plate 24 is hinged to the connecting block 22. The hanging assembly also includes a flipping structure for flipping the rotating support plate 24 upward. The flipping structure includes a slider 243, a connecting rod 244, a pull rod 242, and a limiting member. The slider 243 is slidably connected to the column 2. The two ends of the connecting rod 244 are respectively hinged to the slider 243 and the rotating support plate 24. The lower end of the pull rod 242 is fixedly connected to the slider 243. The limiting member includes a limiting block 245 welded to the upper end of the column 2 and a moving block 246 threadedly connected to the upper end of the pull rod 242. The limiting block 245 is slidably connected to the pull rod 242, and the moving block 246 is in contact with the upper surface of the limiting block 245. By pulling the lever 242 upward, the slider 243 moves upward. After it moves into position, the moving block 246 is rotated downward until it touches the limiting block 245, thereby limiting the height of the lever 242 and preventing it from sliding down. This controls the movement of the lever 242, causing the rotating support plate 24 to flip upward. When the lever 12 moves the basket close to the inner wall of the tank, the lever 242 is close to the column 2, thus not limiting the rotating flip plate. The lever 242 then flips the rotating flip plate upward, so that after the basket is placed in the liquid nitrogen freezing tank, the rotating flip plate will not occupy too much space in the middle of the liquid nitrogen freezing tank, making it easier to place the liquid nitrogen freezing tank body later.

[0023] The connector 25 includes a ring and a ring clamp fixed together. The ring is fixedly connected to the lever 12, and one end of the ring clamp is open, facing the column 2. The connection structure of this solution is simple. The ring clamp is engaged with the lever 12, thereby achieving a detachable connection with the column 2. After the basket 1 is moved into place with the lever 12, the connector 25 limits the position of the column 2, thus limiting the position of the basket 1.

[0024] Example 2 Figure 3As shown, the parts identical to those in Embodiment 1 will not be repeated. The difference lies in that two columns 2 are arranged in parallel, and each of the two longitudinal sidewalls of the connecting block 22 is provided with a rotating support plate 24. A strip-shaped through groove is opened in the middle of the connecting block 22, and the two ends of the strip-shaped through groove are respectively connected to one end of the sliding groove 241 of the two rotating support plates 24. By setting the strip-shaped through groove, the basket 1 can be moved from the current rotating support plate 24 to another rotating support plate 24 under the action of the lever 12, which expands the movable range of the basket 1 and facilitates flexible adjustment. The two connecting rods 244 of the two rotating support plates 24 are respectively connected to the sliders 243 of different columns 2. Through different connecting rods 244 and pull rods 242, the upward pulling of different pull rods 242 can control the rotation of the rotating support plates 24 on different sides to flip, thereby flipping the rotating support plate 24 that is not connected to the basket 1 to save space.

[0025] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A conveniently rotating narrow-mouth liquid nitrogen tank cryopreservation basket, characterized in that: The system includes a mounting assembly and a basketball hoop. The mounting assembly includes a column and a mounting handle rotatably connected to the upper end of the column. A connecting block arranged longitudinally is welded to the lower end of the column. A support block is welded transversely to the lower end of the connecting block. A rotating support plate is movably connected to the longitudinal side wall of the connecting block. A groove is opened in the middle of the rotating support plate. The basketball hoop is slidably connected in the groove of the rotating support plate. A connecting post with internal threads is fixedly connected to the upper end of the basketball hoop in the vertical direction. The connecting post is located on the side of the basketball hoop away from the column. The upper end of the connecting post passes through the groove. A magnetic block is provided on the side wall of the groove away from the column. An iron sheet is fixed on the side wall of the connecting post near the magnetic block. A lever is threadedly connected to the connecting post. A connector that can be detachably connected to the column is provided at the upper end of the lever.

2. The conveniently rotatable narrow-mouth liquid nitrogen tank cryopreservation basket according to claim 1, characterized in that: The rotating support plate is hinged to the connecting block. The hanging assembly also includes a flipping structure for flipping the rotating support plate upward. The flipping structure includes a slider, a connecting rod, a pull rod, and a limiting component. The slider is slidably connected to the column. The two ends of the connecting rod are respectively hinged to the slider and the rotating support plate. The lower end of the pull rod is fixedly connected to the slider. The limiting component includes a limiting block fixedly connected to the upper end of the column and a moving block threadedly connected to the upper end of the pull rod. The limiting block is slidably connected to the pull rod, and the moving block is in contact with the upper surface of the limiting block.

3. The conveniently rotatable narrow-mouth liquid nitrogen tank cryopreservation basket according to claim 1, characterized in that: The connector includes a ring and a ring clamp fixed together. The ring is fixedly connected to the lever, and one end of the ring clamp is open and faces the column.

4. The conveniently rotatable narrow-mouth liquid nitrogen tank cryopreservation basket according to claim 1, characterized in that: Two columns are arranged in parallel. Each of the two longitudinal sidewalls of the connecting block is provided with a rotating support plate. The two connecting rods of the two rotating support plates are respectively connected to the sliders of different columns.

5. The conveniently rotatable narrow-mouth liquid nitrogen tank cryopreservation basket according to claim 1, characterized in that: The upper end of the column is provided with a rotating ring, and the hook handle is fixedly connected to the rotating ring. The hook handle can be rotated along the vertical plane.

6. The conveniently rotatable narrow-mouth liquid nitrogen tank cryopreservation basket according to claim 4, characterized in that: The connecting block has a strip-shaped through groove in the middle, and the two ends of the strip-shaped through groove are respectively connected to one end of the sliding groove of the two rotating support plates.

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