Spring cover type straight lifting barrel of portable liquid nitrogen tank

Abstract

The utility model discloses a portable liquid nitrogen tank spring cover type straight lifting barrel, which comprises a barrel body and a barrel cover, one side of the barrel cover is hinged to one side of the top of the barrel body through a torsion spring, one side of the barrel cover far away from the torsion spring is provided with an upper clamping hook, the barrel body is correspondingly provided with a lower clamping hook elastic component, and the lower clamping hook elastic component comprises a lower clamping hook. The lower clamping hook is fixed to the top of one end of the movable plate, the other end of the movable plate penetrates through the can body and is fixedly connected to one side of a vertical button located outside the can body, one side of the vertical button is elastically connected to one side of a connecting base through a spring, and the side, away from the spring, of the connecting base is fixed to the can body and connected to one side of the can cover through a torsion spring. Meanwhile, the other side of the barrel cover is connected with a lower clamping hook elastic assembly on the barrel body in a matched mode through an upper clamping hook so that the barrel cover can be closed, the lower clamping hook can be driven to be away from the upper clamping hook when a vertical button is slightly pressed, the barrel cover can be stably opened under the effect of the torsional force of a torsional spring, and at the moment, an operator can freely store and take biological samples.

Description

Technical Field

[0001] The utility model relates to the technical field of circular straight-lift buckets for liquid nitrogen tanks, in particular to a spring-covered straight-lift bucket for a portable liquid nitrogen tank. Background Art

[0002] Nowadays, biomedicine is developing rapidly, and various life science research institutions, colleges and hospitals need to store a large number of biological samples in active cryopreservation. Liquid nitrogen tanks are the most commonly used storage containers for ultra-low temperature preservation liquid (liquid nitrogen). Among them, portable liquid nitrogen tanks are mainly used for temporary storage and transportation of small batches of biological samples due to their portability.

[0003] The space for storing biological samples in existing portable liquid nitrogen tanks is mainly the circular vertical bucket inside. The height of the circular vertical bucket is usually 120mm, and the outer diameter varies, about 19 to 40mm; it is mainly used for freezing different specifications of cryotubes containing biological samples, with 2ml cryotubes being the most commonly used.

[0004] Since all the portable liquid nitrogen tanks currently on the market have round straight barrels without a cover, they have obvious defects in the actual sample freezing process as follows:

[0005] a. When small cryotubes (e.g. 2ml cryotubes) are placed in a liquid nitrogen tank, if the total amount of liquid nitrogen exceeds the opening of the tank, the cryotubes will quickly float out of the vertical bucket under the buoyancy of the liquid and enter the external space of the lifting bucket of the liquid nitrogen tank, making it difficult to collect biological specimens or forgetting them. During the specimen transfer process, valuable biological specimens may be lost or cryopreservation may fail. At the same time, the cryotubes floating outside the lifting bucket may make it difficult to return the lifting bucket to its original position, resulting in the inability to close the lid of the liquid nitrogen tank tightly, reducing the sealing of the liquid nitrogen tank, thereby accelerating the evaporation of liquid nitrogen.

[0006] b. Currently, in order to prevent the cryotubes from floating out, due to the lack of standardized bucket covers, gauze and other items are usually used to plug the mouth of the bucket to prevent the sample from floating out of the bucket. However, the effect may be unstable when the liquid nitrogen level is high. At the same time, it will greatly waste the limited storage space of the bucket, significantly reducing the biological sample storage capacity and ease of use of the portable liquid nitrogen tank.

[0007] Therefore, the coverless design of the existing round vertical bucket in the portable liquid nitrogen tank has the problem of being difficult to prevent the sample from floating out of the bucket in actual use. Utility Model Content

[0008] The utility model aims to provide a spring-covered straight-lift bucket for a portable liquid nitrogen tank, so as to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spring-covered straight-lift bucket for a portable liquid nitrogen tank, comprising a barrel body and a barrel cover, one side of the barrel cover is hinged to the top side of the barrel body through a torsion spring, an upper hook is provided on the side of the barrel cover away from the torsion spring, a lower hook elastic component is correspondingly provided on the barrel body, the lower hook elastic component comprises a lower hook, the lower hook is fixed to the top of one end of a movable plate, the other end of the movable plate passes through the barrel body and is fixedly connected to one side of a vertical button located outside the barrel body, one side of the vertical button is also elastically connected to one side of a connecting seat through a spring, the side of the connecting seat away from the spring is fixed to the barrel body, and the barrel cover is closed on the top of the barrel body by the upper hook and the lower hook.

[0010] Preferably, the barrel body is provided with a first through hole, the connecting seat is correspondingly provided with a second through hole, the inner walls on both sides of the first through hole and the second through hole are correspondingly provided with corresponding sliding grooves, and the two sides of the movable plate are slidably connected in the sliding grooves through corresponding pulleys.

[0011] Preferably, an extension block is provided on a side of the barrel cover away from the torsion spring.

[0012] Preferably, a handle is vertically provided on one side of the barrel body, the bottom end of the handle is fixedly connected to the outer wall of the barrel body, and the other end of the handle is provided with a grip.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The spring-covered straight-lift bucket of this portable liquid nitrogen tank is connected to one side of the bucket cover through a torsion spring, and at the same time, the other side of the bucket cover is connected to the lower hook elastic component on the barrel body through an upper hook to realize the closing of the bucket cover. Pressing the vertical button lightly will drive the lower hook away from the upper hook. Under the torsional force of the torsion spring, the bucket cover can be stably opened. At this time, the operator can freely access the biological sample. Secondly, press the vertical button lightly to drive the lower hook to move into the barrel body, and then close the bucket cover and release the light press of the vertical button, so that the upper hook at the bottom of the bucket cover is locked with the lower hook in the lower hook elastic component, and then the bucket cover can be closed to prevent the sample from floating out of the barrel body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the lower hook elastic component of the utility model;

[0017] Figure 3 It is a schematic diagram of the distribution structure of the first through hole and the second through hole of the utility model;

[0018] Figure 4 It is a top view of the movable plate installation structure of the utility model.

[0019] In the accompanying drawings, the following are numerals: 1, barrel body; 2, barrel cover; 3, torsion spring; 4, upper hook; 5, lower hook elastic component; 6, lower hook; 7, movable plate; 8, vertical button; 9, spring; 10, connecting seat; 11, first through hole; 12, second through hole; 13, slide groove; 14, pulley; 15, extension block; 16, handle. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] Example: See Figure 1-4 The utility model provides a technical solution: a spring-covered straight-lift bucket of a portable liquid nitrogen tank, comprising a barrel body 1 and a barrel cover 2, one side of the barrel cover 2 is hinged to the top side of the barrel body 1 through a torsion spring 3, an upper hook 4 is provided on the side of the barrel cover 2 away from the torsion spring 3, and a lower hook elastic component 5 is correspondingly provided on the barrel body 1, the lower hook elastic component 5 includes a lower hook 6, the lower hook 6 is fixed to the top of one end of a movable plate 7, the other end of the movable plate 7 passes through the barrel body 1 and is fixedly connected to one side of a vertical button 8 located outside the barrel body 1, and one side of the vertical button 8 is also elastically connected to the connecting seat 1 through a spring 9. 0, the side of the connecting seat 10 away from the spring 9 is fixed on the barrel body 1, the barrel cover 2 is closed on the top of the barrel body 1 through the upper hook 4 and the lower hook 6, and a light press of the vertical button 8 will drive the lower hook 6 away from the upper hook 4. Under the torsional force of the torsion spring 3, the barrel cover 2 can be stably opened. At this time, the operator can freely access the biological sample. Secondly, a light press of the vertical button 8 drives the lower hook 6 to move toward the inside of the barrel body 1, and then the barrel cover 2 is closed and the light press of the vertical button 8 is released, so that the upper hook 4 at the bottom of the barrel cover 2 is buckled with the lower hook 6 in the lower hook elastic component 5, and the barrel cover 2 can be closed.

[0022] In this embodiment, a first through hole 11 is provided on the barrel body 1, and a second through hole 12 is correspondingly provided on the connecting seat 10. Corresponding slide grooves 13 are correspondingly provided on the inner walls on both sides of the first through hole 11 and the second through hole 12. The two sides of the movable plate 7 are slidably connected in the slide grooves 13 through corresponding pulleys 14, so that the movable plate 7 can slide along the slide grooves 13 of the first through hole 11 and the second through hole 12, driving the lower hook 6 to adjust its position, thereby realizing the buckling or separation of the lower hook 6 and the upper hook 4, so as to drive the barrel cover 2 to open or close.

[0023] In this embodiment, an extension block 15 is provided on a side of the barrel cover 2 away from the torsion spring 3, and the extension block 15 facilitates driving the barrel cover 2 to be closed or opened.

[0024] In this embodiment, a handle 16 is vertically provided on one side of the barrel body 1, the bottom end of the handle 16 is fixedly connected to the outer wall of the barrel body 1, and a handle is provided on the other end of the handle 16 so as to facilitate the operation of the round straight-lift bucket by the handle.

[0025] Working principle: The spring-covered straight-lift bucket of this portable liquid nitrogen tank is connected to one side of the bucket cover 2 through a torsion spring 3, and at the same time, the other side of the bucket cover 2 is connected to the lower hook elastic component 5 on the barrel body 1 through the upper hook 4 to realize the closing of the bucket cover 2. Pressing the vertical button 8 lightly will drive the lower hook 6 away from the upper hook 4. Under the torsion force of the torsion spring 3, the bucket cover 2 can be stably opened. At this time, the operator can freely access the biological sample. Secondly, press the vertical button 8 lightly to drive the lower hook 6 to move into the inside of the barrel body 1, and then close the bucket cover 2 and release the light press of the vertical button 8, so that the upper hook 4 at the bottom of the bucket cover 2 is interlocked with the lower hook 6 in the lower hook elastic component 5, and then the bucket cover 2 can be closed to prevent the sample from floating out of the barrel body 1.

[0026] 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 essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, 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 be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A spring-covered straight-lift bucket for a portable liquid nitrogen tank, characterized in that: The invention comprises a barrel body (1) and a barrel cover (2), one side of the barrel cover (2) is hinged to the top side of the barrel body (1) through a torsion spring (3), an upper hook (4) is provided on the side of the barrel cover (2) away from the torsion spring (3), a lower hook elastic component (5) is correspondingly provided on the barrel body (1), the lower hook elastic component (5) comprises a lower hook (6), the lower hook (6) is fixed to the top of one end of a movable plate (7), the other end of the movable plate (7) passes through the barrel body (1) and is fixedly connected to one side of a vertical button (8) located outside the barrel body (1), one side of the vertical button (8) is also elastically connected to one side of a connecting seat (10) through a spring (9), the side of the connecting seat (10) away from the spring (9) is fixed on the barrel body (1), and the barrel cover (2) is closed on the top of the barrel body (1) by the upper hook (4) and the lower hook (6) being connected and snapped together.

2. The spring-covered straight-lift bucket of a portable liquid nitrogen tank according to claim 1, characterized in that: The barrel body (1) is provided with a first through hole (11), and the connecting seat (10) is correspondingly provided with a second through hole (12). The inner walls on both sides of the first through hole (11) and the second through hole (12) are correspondingly provided with corresponding sliding grooves (13), and the two sides of the movable plate (7) are slidably connected in the sliding grooves (13) through corresponding pulleys (14).

3. The spring-covered straight-lift bucket of a portable liquid nitrogen tank according to claim 2, characterized in that: An extension block (15) is provided on a side of the barrel cover (2) away from the torsion spring (3).

4. The spring-covered straight-lift bucket of a portable liquid nitrogen tank according to claim 3, characterized in that: A handle (16) is vertically provided on one side of the barrel body (1), the bottom end of the handle (16) is fixedly connected to the outer wall of the barrel body (1), and the other end of the handle (16) is provided with a grip.

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