CN219602019U - Novel small-size liquid nitrogen container is suitable for freezes deposits bag - Google Patents

Abstract

The utility model discloses a novel small liquid nitrogen tank applicable freezing bag, which belongs to the technical field of low-temperature freezing preservation and comprises a freezing bag body, a folding structure, a hanging structure and a sleeve component, wherein one end of the freezing bag body is the folding structure, one end of the hanging structure is fixedly connected with the folding structure, and the sleeve component is also arranged in the freezing bag body; the folding structure is cylindrical and comprises a folding opening and a folding hole, the folding opening is arranged at the upper end of the folding structure, the folding holes are symmetrically arranged at two sides of the folding structure, the folding hole penetrates through the folding structure, and the hanging rope penetrates through the inner wall of the folding hole; the hanging structure comprises a hanging rope, a telescopic box, a hanging rod and a hook, wherein the hanging rope is connected to the inner wall of the folding structure in a penetrating manner, two ends of the hanging rope are connected with the side wall of the telescopic box, and the telescopic box is connected with the hook through two ends of the hanging rod. The liquid nitrogen freezing operation is efficiently and safely operated, and the problems that the freezing bag is immersed in liquid nitrogen and is inconvenient to operate and the materials and the liquid nitrogen are easy to pollute are solved.

Description

Novel small-size liquid nitrogen container is suitable for freezes deposits bag

Technical Field

The utility model relates to the technical field of low-temperature freezing preservation, in particular to a novel freezing bag suitable for a small liquid nitrogen tank.

Background

Cryogenic biological sample libraries are currently an important fundamental device for research work in the medical and biological fields, and some special materials often need to be rapidly frozen for storage and use. Because the liquid phase temperature of liquid nitrogen can reach-196 deg.f and a large amount of heat can be absorbed in the process of fast gasification, the material to be frozen can be cooled down quickly in a very short time, so that the liquid nitrogen freezing preservation is the most commonly used method for fast freezing and preserving special materials in scientific research.

In the quick freezing process, certain isolation measures are needed to avoid pollution or mixing of different materials. At present, the most common paper bags, food freezing bags or fresh-keeping bags and the like are used as isolation measures among frozen materials, and the bags are low in price and can withstand low-temperature environments of-70 ℃ and even-196 ℃, but have the following defects that (1) long-arm tweezers are needed to immerse or separate the bag bodies from liquid nitrogen at the beginning and the end of the conventional freezing, so that the operation is inconvenient, and the risk of frostbite is easy to occur and the bag bodies are unsafe. (2) Because the liquid nitrogen is formed by repeated high-pressure cooling, when the temperature rises to 15 ℃, the liquid nitrogen is converted from a liquid phase to a gas phase, and the volume of the liquid nitrogen is expanded 680 times, so that the liquid nitrogen has huge expansibility; therefore, when the bag body leaves the liquid phase surface of the liquid nitrogen after freezing, residual liquid nitrogen in the bag body can be gasified rapidly along with the rise of the ambient temperature, so that the bag body is swelled rapidly and broken, and further, the material waste and the liquid nitrogen pollution are caused. In order to avoid the situation, the bag mouth is usually loosened and pricked, and a certain gap is reserved intentionally to facilitate the exhaust, but the broken material after the liquid nitrogen is frozen is easily leaked out from the loosened bag mouth by adopting the measures, and the material waste and the risk of liquid nitrogen pollution are also easily generated.

Therefore, a proper isolation measure required by liquid nitrogen freezing is searched, so that various solid materials can be quickly, efficiently and safely frozen by liquid nitrogen, and the method is a difficult problem to be solved in the technical field of low-temperature freezing preservation.

Disclosure of Invention

Therefore, the utility model provides a novel small liquid nitrogen tank suitable for a freezing bag, which solves the problems of inconvenient operation and easy material and liquid nitrogen pollution caused by inconvenient immersion or clamping of the freezing bag into or from liquid nitrogen and rapid bulge and rupture of a bag body in the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions:

the novel small liquid nitrogen tank is suitable for a freezing bag and comprises a freezing bag body, a folding structure, a hanging structure and a sleeve component, wherein the folding structure is arranged at the upper end of the freezing bag body, the lower end of the hanging structure is fixedly connected with the folding structure, and the sleeve component is further arranged inside the freezing bag body.

Further, the folding structure is cylindrical and comprises a folding opening and a folding hole, the folding opening is arranged at the upper end of the folding structure, the folding holes are symmetrically arranged at two sides of the folding structure, the folding hole penetrates through the folding structure, and the hanging rope penetrates through the inner wall of the folding hole.

Further, the hanging structure comprises a hanging rope, a telescopic box, a hanging rod and a hook, wherein the hanging rope is connected to the inner wall of the folding structure in a penetrating manner, one end of the hanging rope is connected with the side wall of the telescopic box, and the telescopic box and the hook are respectively connected with the two ends of the hanging rod.

Further, the telescopic box comprises a box cover, a box seat and a telescopic structure, wherein the telescopic structure is arranged in the box seat, the box cover is connected with the outer wall of the box seat in a clamping manner, and the box cover is fixedly connected with one end of the hanging rope.

Further, the telescopic structure center is provided with the center post, the inside gomphosis of center post has the knob, just the center post lower extreme is fixed the cassette holder bottom is inboard.

Further, a knob hole is movably arranged in the center of the box cover, a fixing ring is fixedly arranged on the outer side wall of the box cover, and the fixing ring is detachably connected with one end of the hanging rope.

Further, the outer side wall of the box seat is provided with a first clamping strip and a second clamping strip in parallel, the inner side wall of the box cover is provided with a groove, and the groove is matched with the first clamping strip and the second clamping strip.

Further, the sleeve assembly is composed of a single tube, and the sleeve assembly is sequentially arranged from top to bottom along the height direction of the freezing bag body.

Further, the freezing bag further comprises a vertical line, and the bottom of the freezing bag body is further provided with the vertical line.

Further, the single tubes of the sleeve assembly are arranged in a string, and the single tubes are fixed to each other.

The utility model has the following advantages:

1. according to the utility model, the suspension structure is arranged, so that the freezing bag body with the samples can be conveniently immersed in or separated from the liquid nitrogen surface, and the operation efficiency and safety of liquid nitrogen freezing work are improved.

2. According to the utility model, the length of the hanging rope between the telescopic box and the freezing bag body can be adjusted by arranging the telescopic box, so that the freezing bag body can be conveniently placed at different depths, and the freezing bag body can be conveniently placed at the bottom of the liquid nitrogen tank so as to ensure the freezing effect of frozen materials.

3. According to the utility model, through the cooperation of the rolling structure and the hanging structure, the rolling opening is tightly tied, so that the exhaust is facilitated, broken materials after the liquid nitrogen is frozen can be prevented from leaking from the loose bag opening, the exhaust effect is still not affected, and the problems of material waste and liquid nitrogen pollution caused by the fact that the bag body is rapidly inflated and broken due to the fact that residual liquid nitrogen in the bag body is rapidly gasified along with the increase of the ambient temperature after the freezing is finished are avoided.

4. According to the utility model, through arranging the sleeve component, different frozen materials can be packaged and strictly isolated, so that pollution or mixing of different materials is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the ambit of the technical disclosure.

FIG. 1 is a schematic overall structure diagram of a novel small liquid nitrogen tank suitable for a freezing bag;

FIG. 2 is a schematic view of the telescopic case according to the present utility model;

FIG. 3 is a schematic view of a telescopic structure according to the present utility model;

FIG. 4 is a schematic view of a cassette holder according to the present utility model;

FIG. 5 is a schematic diagram of a groove structure of a box cover provided by the utility model;

FIG. 6 is a schematic view of a bushing assembly according to the present utility model;

in the figure: 1. a freezing bag body; 2. a rolling structure; 201. collecting and tying the mouth; 202. rolling the hole; 3. a hanging structure; 301. hanging ropes; 302. a telescopic box; 3021. a box cover; 3022. a box base; 3023. a telescopic structure; 3024. a fixing ring; 3025. a knob hole; 3026. a groove; 3027. a center column; 3028. a knob; 3029. the first clamping strip; 3030. a second clamping strip; 303. a hanging rod; 304. a hook; 4. a sleeve assembly; 401. a single tube; 5. and (5) a vertical line.

Detailed Description

Other advantages and advantages of the present utility model will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in figure 1, the utility model provides a novel small liquid nitrogen tank applicable freezing bag, which comprises a freezing bag body 1, a folding structure 2, a hanging structure 3 and a sleeve component 4, wherein the freezing bag body 1 is made of EVA (ethylene vinyl acetate adhesive film) low-temperature resistant materials, has excellent low-temperature resistant effect, is applicable to long-term low-temperature storage of biological products such as cells and the like in an environment of-80 ℃ to-196 ℃, has high freezing speed, high rebound resilience, high tensile force and high toughness, has good shockproof buffer performance and puncture resistance, and has good durability passing verification; and meanwhile, the biological sample has low water vapor transmission and gas barrier properties, and is beneficial to protecting the integrity of the biological sample. The inside of the freezing bag body 1 can be upwards provided with sleeve assemblies 4 along the height direction; the upper end of the freezing bag body 1 is provided with a folding structure 2, the opening of the freezing bag body 1 is communicated with the folding structure 2, the folding structure 2 is convenient for placing or taking out the freezing materials into or from the freezing bag body 1, the folding opening 201 can be tightened, and the freezing bag body 1 is convenient for accommodating and storing the freezing materials.

In the prior art, long-arm tweezers are used for immersing or clamping the bag body into or away from liquid-phase liquid nitrogen at the beginning and the end of freezing, so that the operation is inconvenient, the risk of freezing injury is easy to occur and the bag body is unsafe, one end of the hanging structure 3 is fixedly connected with the folding structure 2, the other end of the hanging structure can be hung at the edge of a liquid nitrogen tank, a label can be arranged on the hanging rod 303, the required freezing material is found only through the label on the hanging rod 303 when the freezing material needs to be taken out, and then the freezing bag body 1 is taken out through the hanging structure 3, so that the freezing operation of the liquid nitrogen is more convenient and accurate, and the safety and convenience of the freezing operation of the liquid nitrogen are improved; when the hanging structure 3 is tightened, the folding structure 2 can be tightly tied, the sleeve component 4 is further arranged in the freezing storage bag body 1, and different freezing storage materials can be split-packed and strictly isolated for aseptic independent packaging.

The folding structure 2 is a cylindrical structure with a lower height, see fig. 1, and comprises a folding opening 201 and a folding hole 202, wherein the folding opening 201 is arranged at the upper end of the folding structure 2, and the folding opening 201 is communicated with the opening of the freezing storage bag body 1. The bundling holes 202 are symmetrically arranged at two sides of the bundling structure 2, transversely penetrate through the bundling structure 2, and the hanging ropes 301 penetrate through the inner walls of the bundling holes 202. The middle part of hanging rope 301 runs through and pricks hole 202, and the both ends of hanging rope 301 upwards fixed connection is in the both sides of flexible box 302, not only can tighten simultaneously when tightening up hanging rope 301 and receive tie up 201 like this, can also avoid hanging rope 301 to twine each other, and then tighten up the opening of freezing bag body 1, plays the effect of stable protection to the frozen material in the freezing bag body 1.

The hanging structure 3 comprises a hanging rope 301, a telescopic box 302, a hanging rod 303 and a hook 304, wherein the hanging rope 301 is connected to the inner wall of the folding structure 2 in a penetrating manner, and the detail is shown in fig. 1; when the hanging rope 301 on the freezing bag body 1 is lifted or tightened, the tying opening 201 can be tied up; the telescopic box 302 is cylindrical, one end of the hanging rope 301 extends out of the telescopic box 302, and the other end of the hanging rope 301 is fixedly connected with the side wall of the telescopic box 302. The two ends of the hanging rope 301 are kept in a separated state, so that the hanging rope 301 can be prevented from being mutually wound, the telescopic box 302 is connected with the hanging hook 304 through the two ends of the hanging rod 303, the lower end of the hanging rod 303 is fixedly connected with the upper end of the telescopic box 302, the upper end of the hanging rod 303 is fixedly connected with the lower end of the hanging hook 304, and when the freezing bag body 1 is placed into a container stored by liquid nitrogen, the hanging hook 304 can be hung on the edge of the container, so that the freezing bag body 1 is hung in the container, and the freezing bag body 1 can be taken out when the freezing material is stored and used.

As shown in fig. 2 to 5, the telescopic box 302 includes a box cover 3021, a box seat 3022 and a telescopic structure 3023, the telescopic structure 3023 is arranged in the box seat 3022, and the box cover 3021 is connected to the outer edge of the box seat 3022 in a clamping manner; when the length of the hanging rope needs to be adjusted, a groove 3026 on the box cover 3021 is clamped with a first clamping strip 3029 on the outer edge of the box seat 3022, the surface of the first clamping strip 3029 is smooth, the box cover 3021 and the box seat 3022 are in a relative rotation state, a rotatable knob 3028 is used for adjusting the hanging rope 301 extending out of the telescopic box 302, when the hanging rope 301 is adjusted to a proper length, the box cover 3021 can be pressed down, the groove 3026 on the box cover 3021 is clamped with a second clamping strip 3030, lines for limiting rotation to increase friction are arranged on the surface of the second clamping strip 3030, and the volume of the second clamping strip 3030 is larger than that of the first clamping strip 3029, so that the box cover 3021 and the box seat 3022 are relatively fixed;

as shown in fig. 3, a central column 3027 is fixedly arranged at the center of the telescopic structure 3023, a knob 3028 is embedded in the central column 3027, the lower end of the central column 3027 is fixed at the inner side of the bottom of the box seat 3022, and when the knob 3028 is rotated, the central column 3027 rotates along with the knob 3028, so as to drive the telescopic structure 3023 and the bottom of the box seat 3022 to rotate together, thereby adjusting the hanging rope 301 to a required length.

Specifically, a knob hole 3025 is movably disposed at the center of the box cover 3021, and when the box cover 3021 is covered on the box base 3022, the knob 3028 can directly extend out of the rotation hole 3025 to facilitate control of the telescopic structure 3023; the knob hole 3025 is elongated, is adapted to the shape of the knob 3028, and serves as a stop for the knob 3028. The outer side wall of the box cover 3021 is fixedly provided with a fixing ring 3024, and after the hanging rope 301 is folded into the structure 2, the hanging rope can be fixed on the fixing ring 3024.

As shown in fig. 4, a first clamping bar 3029 and a second clamping bar 3030 are arranged on the outer side wall of the box base 3022 in parallel, a groove 3026 is arranged on the inner side wall of the box cover 3021, and the groove 3026 is matched with the first clamping bar 3029 and the second clamping bar 3030; the surface of the first clamping strip 3029 is smooth, and the surface of the second clamping strip 3030 is provided with lines, so when the groove 3026 is clamped on the first clamping strip 3029, the box cover 3021 can freely rotate along the circumferential direction relative to the box base 3022, but the box cover 3021 and the box base 3022 cannot be separated due to the limitation of the first clamping strip 3029, and at the moment, the knob 3028 can be rotated to adjust the telescopic structure 3023 so that the hanging rope 301 reaches the required length.

When the groove 3026 is engaged with the second clamping bar 3030, the second clamping bar 3030 plays a role in limiting the box cover 3021, and the box cover 3021 cannot rotate relative to the box seat 3022 in a fixed state, so that the rotation of the knob 3028 is also limited, and at this time, the length of the hanging rope 301 extending out of the telescopic box 302 is fixed, and the telescopic box 302 cannot be retracted or stretched continuously.

One end of the hanging rope 301 is fixed inside the telescopic structure 3023, and the other end is wound and stored along the outer wall of the telescopic structure 3023 and extends out of the box cover 3021 of the telescopic box 302; as shown in fig. 3, one end of the hanging rope 301 extending out of the box cover 3021 passes through the folding hole 202, and passes through the folding structure 2 to be fixed to the fixing ring 3024 at one side of the telescopic box 302.

When in use, the knob 3028 can be rotated as required to release the hanging rope 301 from the telescopic structure 3023 for a proper length, the knob 3028 is stopped to be rotated, the box cover 3021 is pressed to enable the groove 3026 to be clamped on the second clamping strip 3030, and therefore the length of the hanging rope 301 extending out of the telescopic box 302 is fixed; at this time, because the rotation of the knob 3028 is limited, the hanging rope 301 between the telescopic box 302 and the folding structure 2 is kept to a fixed length, and the design makes the telescopic box 302 adjust the length of the hanging rope 301 between the telescopic box 302 and the freezing storage bag body 1, so that the freezing storage bag body 1 can be conveniently placed at different depths, and the freezing storage bag body 1 can conveniently reach the bottom of the liquid nitrogen tank to ensure the freezing storage effect of the freezing storage material.

As shown in fig. 1, a fixing ring 3024 is further disposed on one side of the box cover 3021, and one end of the hanging rope 301 extending out of the telescopic box 302 may be fixed on the fixing ring 3024 on one side of the box cover 3021 after penetrating through the folding structure 2 through the folding hole 202, so that the length of the hanging rope 301 is fixed; the length of the hanging rope 301 for hanging the freezing bag body 1 can be adjusted due to the arrangement of the telescopic box 302, so that the freezing bag body 1 can be suitable for liquid nitrogen tanks of different types, and has stronger applicability and wider application range.

As shown in fig. 1 and 6, the sleeve assembly 4 is composed of a plurality of single tubes 401, the single tubes 401 are fixedly connected, the single tubes 401 are made of medical plastic materials, the single tubes 401 have certain hardness and are suitable for storing 2ml of frozen storage tubes, and the 2ml of frozen storage tubes can be vertically placed in the single tubes 401; the outer wall of the sleeve assembly 4 can be classified by labels so as to store, identify and accurately take the required frozen materials. The sleeve assembly 4 is sequentially arranged from top to bottom along the height direction of the freezing bag body 1, and when the needed freezing materials are taken out from the collecting and tying port 201 at the upper end, the damage to other freezing materials or the freezing effect of other freezing materials can be avoided.

The vertical line 5 is further included, as shown in fig. 1, the vertical line 5 is further arranged at the bottom of the freezing and storing bag body 1, and the vertical line 5 can assist the freezing and storing bag body 1 to be placed vertically under the action of gravity, so that workers can correct deflection of the freezing and storing bag body 1 in time; in this way, the freezing bag body 1 can be kept in a vertical hanging state, which is beneficial to preventing freezing materials from being spilled or polluted due to inclination.

As shown in fig. 6, the single tubes 401 of the sleeve assembly 4 are arranged in series, and a plurality of single tubes 401 are mutually fixed in sequence, and then different frozen materials are packaged separately, so that the frozen materials are packaged independently in a sterile manner; meanwhile, the plurality of single tubes 401 are mutually fixed in sequence, so that inclined leakage of the frozen storage material is avoided, the storage stability of the frozen storage material is improved, and a certain shock absorption effect is achieved on the frozen storage material.

The application process of the embodiment of the utility model is as follows:

1. in use, the sleeve assembly 4 containing the frozen stock material is firstly placed inside the frozen stock bag body 1, and the sleeve assemblies 4 consisting of a plurality of single tubes 401 are sequentially arranged from bottom to top.

2. After the sleeve assembly 4 is placed, the knob 3028 can freely rotate by the clamping of the groove 3026 and the first clamping strip 3029 so as to adjust the proper length of the hanging rope 301 extending out of the telescopic box 302, and the length of the hanging rope 301 is fixed by the clamping of the groove 3026 and the second clamping strip 3030;

one end of the hanging rope 301 is penetrated through the bundling structure 2, and one end of the hanging rope 301 is pulled to be fixed on the fixing ring 3024 so as to tighten the bundling opening 201.

3. The freezing bag body 1 is placed in the liquid nitrogen tank, and the hook 304 is hung on the outer wall of the opening of the liquid nitrogen tank, so that the label on the hanging rod 303 can be checked conveniently; when the frozen material is required to be taken, the hook 304 is taken up, the frozen bag body 1 is lifted up through the hanging structure 3, and the frozen material is taken out according to the label attached to the outer wall of the sleeve assembly 4.

While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

Claims (8)

1. The novel small liquid nitrogen tank is suitable for a freezing bag and is characterized by comprising a freezing bag body (1), a folding structure (2), a hanging structure (3) and a sleeve component (4), wherein the folding structure (2) is arranged at the upper end of the freezing bag body (1), the hanging structure (3) is fixedly connected with the folding structure (2), and the sleeve component (4) is further arranged inside the freezing bag body (1);

the folding structure (2) is cylindrical and comprises a folding opening (201) and folding holes (202), the folding opening (201) is arranged at the upper end of the folding structure (2), the folding holes (202) are symmetrically arranged at two sides of the folding structure (2), the folding holes (202) penetrate through the folding structure (2), and the hanging ropes (301) penetrate through the inner walls of the folding holes (202);

the hanging structure (3) comprises a hanging rope (301), a telescopic box (302), a hanging rod (303) and a hook (304), wherein the hanging rope (301) is connected to the inner wall of the folding structure (2) in a penetrating mode, one end of the hanging rope (301) is connected with the side wall of the telescopic box (302), and the telescopic box (302) and the hook (304) are respectively connected with two ends of the hanging rod (303).

2. The novel small liquid nitrogen tank applicable freezing bag according to claim 1, wherein the telescopic box (302) comprises a box cover (3021), a box seat (3022) and a telescopic structure (3023), the telescopic structure (3023) is arranged in the box seat (3022), the box cover (3021) is clamped and connected to the outer wall of the box seat (3022), and the box cover (3021) is fixedly connected with one end of the hanging rope (301).

3. The novel small liquid nitrogen tank applicable freezing bag as claimed in claim 2, wherein a central column (3027) is arranged at the center of the telescopic structure (3023), a knob (3028) is embedded in the central column (3027), and the lower end of the central column (3027) is fixed at the inner side of the bottom of the box base (3022).

4. The novel small liquid nitrogen tank applicable freezing bag as claimed in claim 2, wherein a knob hole (3025) is movably arranged in the center of the box cover (3021), a fixing ring (3024) is fixedly arranged on the outer side wall of the box cover (3021), and the fixing ring (3024) is detachably connected with one end of the hanging rope (301).

5. A novel small liquid nitrogen tank applicable freezing bag as claimed in claim 3, wherein the outer side wall of the box base (3022) is provided with a first clamping strip (3029) and a second clamping strip (3030) in parallel, the inner side wall of the box cover (3021) is provided with a groove (3026), and the groove (3026) is matched with the first clamping strip (3029) and the second clamping strip (3030).

6. The novel small liquid nitrogen tank applicable freezing bag as claimed in claim 1, wherein the sleeve assembly (4) is composed of a single tube (401), and the sleeve assemblies (4) are sequentially arranged from top to bottom along the height direction of the freezing bag body (1).

7. The novel small liquid nitrogen tank applicable freezing bag according to claim 1, further comprising a vertical line (5), wherein the bottom of the freezing bag body (1) is further provided with the vertical line (5).

8. The novel small liquid nitrogen container applicable freezing bag as claimed in claim 6, wherein the single tubes (401) of the sleeve assembly (4) are arranged in series, and the single tubes (401) are mutually fixed.