Integrated bottle stopper for liquid nitrogen container

Abstract

The utility model discloses an integrated bottle stopper for a liquid nitrogen container, belonging to the technical field of cryogenic preservation equipment, comprising a fixed cover and an elastic sealing plug for sealing the liquid nitrogen container fixed to the bottom of the fixed cover, an outer wall of one side of the fixed cover is rotatably connected with an adjusting column, an end face of the adjusting column is fixed with an active bevel gear, a bottom wall of the inner cavity of the elastic sealing plug is provided with a support plate, and the surface of the support plate is fixed with two fixed columns fixedly connected with the fixed cover, a supporting airbag is movably connected to the outside of the fixed column, a lifting screw is rotatably connected in the bottom plate of the fixed cover, a driven bevel gear meshing with the active bevel gear is fixed to the top of the lifting screw, a lifting sleeve is threadedly connected to the outer wall of the lifting screw, and a pressure plate is fixed to the bottom of the lifting sleeve. The integrated bottle stopper for the liquid nitrogen container is not only easy to open, but also can seal liquid nitrogen containers of different diameters, and has a wider range of applications.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-temperature preservation equipment, and in particular relates to an integrated bottle stopper for a liquid nitrogen container. Background Art

[0002] Among the existing ultra-low temperature containers, liquid nitrogen containers are the most widely used biological containers. The container body is set by stainless steel or aluminum alloy materials, a vacuum wall cavity is set in the container body, and a material with good thermal insulation is set in the vacuum wall cavity to prevent the cold in the container body from leaking out. When in use, the inner cavity of the container body is filled with sufficient liquid nitrogen or a small amount of liquid nitrogen to evaporate it to form low-temperature nitrogen gas. The former is suitable for ultra-low temperature environment requirements, and the latter is suitable for low temperature environment requirements. Both use the ultra-low temperature of liquid nitrogen to quickly reduce the temperature in the container, and then use the insulation function of the vacuum wall cavity to keep the cold in the container from leaking out as much as possible, and replenish liquid nitrogen after a certain period of time to maintain the low temperature environment in the container.

[0003] The liquid nitrogen container is provided with a bottle stopper at the position of the container mouth. The bottle stoppers of the liquid nitrogen containers in the prior art are mostly of fixed size and can only seal liquid nitrogen containers of the same size. Liquid nitrogen containers of different sizes require bottle stoppers of different sizes, and bottle stoppers of various sizes increase the use cost.

[0004] Reference to the Chinese authorized patent with authorization announcement number: CN212869362U: An integrated bottle stopper for a liquid nitrogen container. In this utility model, the integrated bottle stopper is plugged into the bottle mouth of the liquid nitrogen container, the liquid level meter monitors the liquid nitrogen level, the thermometer monitors the temperature in the liquid nitrogen container, and the status in the liquid nitrogen container is monitored in real time, so as to replenish the liquid nitrogen in the liquid nitrogen container in time. However, it also has the problem of being able to seal only liquid nitrogen containers of the same size and having a limited scope of application during use. Utility Model Content

[0005] The utility model aims to provide an integrated bottle stopper for a liquid nitrogen container, so as to solve the problem that the integrated bottle stopper can only seal liquid nitrogen containers of the same size during use and has a limited scope of application.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an integrated bottle plug for a liquid nitrogen container, comprising a fixed cover and an elastic sealing plug for sealing the liquid nitrogen container fixed to the bottom of the fixed cover, an outer wall of one side of the fixed cover is rotatably connected with an adjusting column, an end surface of the adjusting column is fixed with an active bevel gear, a bottom wall of the inner cavity of the elastic sealing plug is provided with a supporting plate, and two fixing columns fixedly connected to the fixed cover are fixed on the surface of the supporting plate, and a supporting airbag is movably connected to the outside of the fixing column;

[0007] A lifting screw is rotatably connected in the bottom plate of the fixed cover, a driven bevel gear meshing with the active bevel gear is fixed on the top of the lifting screw, a lifting sleeve is threadedly connected to the outer wall of the lifting screw, and a pressure plate for squeezing and supporting the airbag is fixed on the bottom of the lifting sleeve.

[0008] In a further embodiment, an adjusting button is fixed to one end of the adjusting column, and a supporting block rotatably connected to the adjusting column is fixed to the bottom wall of the inner cavity of the fixing cover.

[0009] In a further embodiment, a limiting ring movably connected to the adjusting button is fixed to an outer wall of one side of the fixing cover, a threaded hole is provided on the surface of the limiting ring, and a fixing bolt is threadedly connected in the threaded hole on the surface of the limiting ring.

[0010] In a further embodiment, limiting rods are fixed to the outer walls on both sides of the lifting sleeve, and the limiting rods are provided with moving holes for the fixed columns to move.

[0011] In a further embodiment, a connecting sleeve is fixed to the bottom of the elastic sealing plug, and a liquid level measuring tube and a temperature probe are respectively installed on the bottom of the connecting sleeve.

[0012] In a further embodiment, a mounting groove is provided on the surface of the fixing cover, and a display screen is installed in the mounting groove on the surface of the fixing cover.

[0013] Technical effects and advantages of the utility model:

[0014] The integrated bottle plug of the liquid nitrogen container drives the active bevel gear to rotate by rotating the adjusting column through the adjusting knob, and the active bevel gear drives the lifting screw to rotate through the driven bevel gear, thereby driving the lifting sleeve and the pressing plate to descend, squeezing the supporting airbag, deforming the supporting airbag, and extending the elastic sealing plug outward, changing the size of the elastic sealing plug, so that liquid nitrogen containers of different sizes can be sealed, and the application range is wider;

[0015] By rotating the adjusting knob in the opposite direction, the lifting sleeve and the pressing plate are driven to rise, the squeezing of the supporting airbag is released, the supporting airbag and the elastic sealing plug are reset, and the elastic sealing plug is separated from the inner wall of the container opening of the liquid nitrogen container, so that the bottle plug can be quickly taken out of the liquid nitrogen container;

[0016] By tightening the fixing bolt, the position of the adjusting knob can be fixed to prevent the adjusting knob from accidentally rotating and causing the size of the elastic sealing plug to change, thereby ensuring the stability of the connection between the elastic sealing plug and the liquid nitrogen container. The integrated bottle stopper of the liquid nitrogen container is not only easy to open, but also can seal liquid nitrogen containers of different diameters, and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0019] Figure 2 It is a schematic structural diagram of the fixed cover and the elastic sealing plug of the utility model in a cutaway state;

[0020] Figure 3 It is a structural schematic diagram of the adjustment button of the utility model;

[0021] Figure 4 This is an exploded view of the support plate of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the lifting screw and lifting sleeve of the utility model.

[0023] In the figure: 1. fixed cover; 2. elastic sealing plug; 3. connecting sleeve; 4. liquid level measuring tube; 5. temperature probe; 6. protective plate; 7. controller; 8. display screen; 9. adjusting button; 10. adjusting column; 11. driving bevel gear; 12. supporting block; 13. limiting ring; 14. fixing bolt; 15. supporting plate; 16. fixing column; 17. supporting airbag; 18. lifting screw; 19. driven bevel gear; 20. lifting sleeve; 21. pressure plate; 22. limiting rod. DETAILED DESCRIPTION

[0024] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0025] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0026] See also Figure 1-5The utility model provides an integrated bottle plug for a liquid nitrogen container, comprising a fixed cover 1 and an elastic sealing plug 2 fixed to the bottom of the fixed cover 1 for sealing the liquid nitrogen container. The material of the elastic sealing plug 2 can be selected according to actual use requirements. The diameter of the elastic sealing plug 2 is smaller than the diameter of the container mouth of the liquid nitrogen container, so that the elastic sealing plug 2 can be quickly taken in and out of the container mouth of the liquid nitrogen container. A connecting sleeve 3 is fixed to the bottom of the elastic sealing plug 2. A liquid level measuring tube 4 and a temperature probe 5 are respectively installed at the bottom of the connecting sleeve 3. The liquid level probe 5 can be installed at a suitable position in the liquid level measuring tube 4. The temperature probe 5 monitors the temperature in the liquid nitrogen container, and the liquid level probe monitors the liquid level in the liquid nitrogen container, and the condition in the liquid nitrogen container is monitored in real time, so as to replenish the liquid nitrogen in the liquid nitrogen container in time. A protective plate 6 is fixed in the fixed cover 1, and a controller 7 is installed on the surface of the protective plate 6. The controller 7 is a prior art, and its structure is not described in detail here. A mounting groove is provided on the surface of the fixed cover 1, and a display screen 8 is installed in the mounting groove on the surface of the fixed cover 1. The display screen 8 is used to display the temperature and liquid level in the liquid nitrogen container, and a control switch is installed on the fixed cover 1;

[0027] An adjusting column 10 is rotatably connected to the outer wall of one side of the fixed cover 1 through a bearing, and an adjusting button 9 and an active bevel gear 11 are respectively fixed to the two ends of the adjusting column 10. A supporting block 12 rotatably connected to the adjusting column 10 is fixed to the bottom wall of the inner cavity of the fixed cover 1. The supporting block 12 can ensure the stability of the adjusting column 10 when rotating. A limiting ring 13 movably connected to the adjusting button 9 is fixed to the outer wall of one side of the fixed cover 1. A threaded hole is opened on the surface of the limiting ring 13, and a fixing bolt 14 is threadedly connected to the threaded hole on the surface of the limiting ring 13. Tightening the fixing bolt 14 so that the fixing bolt 14 is tightly attached to the outer wall of the adjusting button 9 can fix the position of the adjusting button 9 to prevent the adjusting button 9 from rotating accidentally.

[0028] A support plate 15 is provided on the bottom wall of the inner cavity of the elastic sealing plug 2, and two fixing columns 16 fixedly connected to the fixing cover 1 are fixed on the surface of the support plate 15, and a supporting airbag 17 is movably connected to the outside of the fixing column 16, and the outside of the supporting airbag 17 is wrapped with an ultra-low temperature resistant insulation layer, and a lifting screw 18 is rotatably connected to the bottom plate of the fixing cover 1 through a bearing, and the bearing is fixedly connected to the bottom plate of the fixing cover 1, thereby limiting the position of the lifting screw 18, and a driven bevel gear 19 meshing with the active bevel gear 11 is fixed to the top of the lifting screw 18, and a lifting sleeve 20 is threadedly connected to the outer wall of the lifting screw 18, and a pressure plate 21 for squeezing the supporting airbag 17 is fixed to the bottom of the lifting sleeve 20, and a limiting rod 22 is fixed to the outer walls of both sides of the lifting sleeve 20, and a limit rod 22 is provided on the limiting rod 22 for the fixed column 16 to move The movable moving hole and the setting of the limit rod 22 can ensure the vertical movement of the lifting sleeve 20 when the lifting screw 18 rotates. The adjusting column 10 is rotated by the adjusting knob 9 to drive the active bevel gear 11 to rotate. The active bevel gear 11 drives the lifting screw 18 to rotate through the driven bevel gear 19, thereby driving the lifting sleeve 20 and the pressure plate 21 to descend, squeeze the support airbag 17, and the support airbag 17 is deformed to make the elastic sealing plug 2 extend outward, and the size of the elastic sealing plug 2 is changed, so as to seal liquid nitrogen containers of different sizes. The adjusting knob 9 is rotated in the reverse direction to drive the lifting sleeve 20 and the pressure plate 21 to rise, release the squeezing of the support airbag 17, and reset the support airbag 17 and the elastic sealing plug 2. The elastic sealing plug 2 is separated from the inner wall of the container mouth of the liquid nitrogen container, and the bottle plug can be quickly taken out of the liquid nitrogen container.

[0029] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The control method of the utility model is controlled by the controller 7, and the control circuit of the controller 7 can be realized by simple programming by technicians in this field. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Working principle:

[0032] When the integrated bottle stopper of the liquid nitrogen container is used, the elastic sealing plug 2 is placed in the container mouth of the liquid nitrogen container, and the adjusting column 10 is rotated by the adjusting button 9 to drive the active bevel gear 11 to rotate. The active bevel gear 11 drives the lifting screw 18 to rotate through the driven bevel gear 19, thereby driving the lifting sleeve 20 and the pressing plate 21 to descend, and the pressing plate 21 squeezes the supporting airbag 17, and the supporting airbag 17 is deformed, so that the elastic sealing plug 2 extends outward, and the size of the elastic sealing plug 2 is changed, so that the elastic sealing plug 2 is closely attached to the inner wall of the container mouth of the liquid nitrogen container, thereby sealing the liquid nitrogen container, tightening the fixing bolt 14, so that the fixing bolt 14 is closely attached to the outer wall of the adjusting button 9, and the position of the adjusting button 9 is fixed to prevent the adjusting button 9 from rotating accidentally, and the temperature probe 5 monitors the temperature in the liquid nitrogen container, and the liquid level probe monitors the liquid level in the liquid nitrogen container, and the status in the liquid nitrogen container is monitored in real time;

[0033] When the bottle stopper needs to be removed, the fixing bolt 14 is loosened, and the adjusting knob 9 is rotated in the opposite direction to drive the lifting sleeve 20 and the pressing plate 21 to rise, thereby releasing the squeezing of the supporting airbag 17, so that the supporting airbag 17 and the elastic sealing plug 2 are reset, and the elastic sealing plug 2 is separated from the inner wall of the container mouth of the liquid nitrogen container, and the fixing cover 1 is moved upward to quickly take the bottle stopper out of the liquid nitrogen container.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated bottle stopper for a liquid nitrogen container, comprising a fixed cover (1) and an elastic sealing plug (2) fixed to the bottom of the fixed cover (1) for sealing the liquid nitrogen container, characterized in that: An adjusting column (10) is rotatably connected to an outer wall of one side of the fixed cover (1), an active bevel gear (11) is fixed to the end surface of the adjusting column (10), a supporting plate (15) is provided on the bottom wall of the inner cavity of the elastic sealing plug (2), and two fixing columns (16) fixedly connected to the fixed cover (1) are fixed on the surface of the supporting plate (15), and a supporting airbag (17) is movably connected to the outside of the fixing column (16); A lifting screw (18) is rotatably connected to the bottom plate of the fixed cover (1), a driven bevel gear (19) meshing with the driving bevel gear (11) is fixed to the top of the lifting screw (18), a lifting sleeve (20) is threadedly connected to the outer wall of the lifting screw (18), and a pressure plate (21) for squeezing the support airbag (17) is fixed to the bottom of the lifting sleeve (20).

2. The integrated bottle stopper for a liquid nitrogen container according to claim 1, characterized in that: An adjusting button (9) is fixed to one end of the adjusting column (10), and a supporting block (12) rotatably connected to the adjusting column (10) is fixed to the bottom wall of the inner cavity of the fixing cover (1).

3. The integrated bottle stopper for a liquid nitrogen container according to claim 2, characterized in that: A limiting ring (13) movably connected to the adjusting button (9) is fixed to an outer wall of one side of the fixing cover (1), a threaded hole is provided on the surface of the limiting ring (13), and a fixing bolt (14) is threadedly connected to the threaded hole on the surface of the limiting ring (13).

4. The integrated bottle stopper for a liquid nitrogen container according to claim 1, characterized in that: Limit rods (22) are fixed to the outer walls on both sides of the lifting sleeve (20), and the limit rods (22) are provided with moving holes for the fixed columns (16) to move.

5. The integrated bottle stopper for a liquid nitrogen container according to claim 1, characterized in that: A connecting sleeve (3) is fixed to the bottom of the elastic sealing plug (2), and a liquid level measuring tube (4) and a temperature probe (5) are respectively installed at the bottom of the connecting sleeve (3).

6. The integrated bottle stopper for a liquid nitrogen container according to claim 3, characterized in that: A mounting groove is provided on the surface of the fixed cover (1), and a display screen (8) is installed in the mounting groove on the surface of the fixed cover (1).

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