Anti-explosion cryopreservation tube provided with vent valve
By designing a ventilation valve in the frozen storage tube, the problem of the frozen storage tube collapse during heating is solved, and the effect of preventing sample waste and contamination is achieved, ensuring the accuracy of the experimental results.
Patent Information
- Application Number
- CN202420553202.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-20
AI Technical Summary
During the heating process, the existing frozen storage tubes evaporate into gas due to sealing properties. The gas expands and causes the pipe cover to flush open, causing the pipe explosion accident, resulting in waste of samples and the impact of experimental results.
An explosion-proof freezing storage tube equipped with a vent valve is designed. The vent valve includes a cylindrical cavity, a vent hole, a rubber pad and a spring. When the air pressure in the pipe increases, gas is discharged through the vent valve to prevent the pipe from collapsing; in the absence of heating, the rubber pad blocks the vent hole, forming a closed space, and protecting the sample.
By setting up a ventilation valve, the frozen storage tube can effectively prevent the pipe from collapsing when heated, ensure that the sample is not contaminated, and prevent the occurrence of dangerous situations.
Smart Images
Figure CN222567801U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cryopreservation equipment, in particular to an explosion-proof cryopreservation tube equipped with a ventilation valve. Background Art
[0002] Cryotubes are a common and important laboratory tool, mainly used for sample separation and storage, and are widely used in the field of life sciences. In common laboratory experiments, cryotubes containing samples are often heated. During the heating process, the liquid in the cryotube evaporates into gas due to the sealing effect of the cryotube, and the expansion of the gas pushes the tube cover open, causing the tube to burst, resulting in sample waste and affecting the experimental results.
[0003] Therefore, it is necessary to provide an explosion-proof cryogenic storage tube equipped with a vent valve to solve the above technical problems. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and proposes an explosion-proof cryogenic storage tube equipped with a vent valve.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] An explosion-proof cryogenic tube equipped with a vent valve, comprising a cryogenic tube, a tube cover and a vent valve, characterized in that the lower end of the tube cover is threadedly connected to the upper end of the cryogenic tube, and the vent valve is arranged on the inner side of the tube cover;
[0007] The vent valve includes a cylindrical cavity, the upper end of the cylindrical cavity is fixedly connected to the middle part of the inner side of the tube cover, a vent hole is arranged in the middle part of the bottom end of the cylindrical cavity, a circular groove is arranged at the bottom end of the cylindrical cavity, a rubber pad is arranged in the circular groove, the upper end of the rubber pad is fixedly connected to a spring, the upper end of the spring is connected to the upper end of the tube cover, and an air outlet hole is arranged in the middle part of the upper end of the tube cover.
[0008] Preferably, a group of limiting protrusions are fixedly connected to the upper end of the inner part of the tube cover, and the limiting protrusions can prevent the rubber pad from blocking the air outlet.
[0009] Preferably, the rubber pad is circular, and the rubber pad has the same diameter as the inner side of the circular groove.
[0010] Preferably, the outer side of the tube cover is provided with anti-slip grooves.
[0011] Preferably, the outer side of the cryopreservation tube is provided with a scale.
[0012] Compared with the related art, the beneficial effect of the utility model is that an explosion-proof cryogenic tube is obtained through the above technical solution. By setting a vent valve, when the air pressure in the tube increases, the gas is discharged in time through the exhaust valve, which effectively prevents the cryogenic tube from bursting when heated.
[0013] When not heated, the pressure in the tube decreases, and the rubber pad is reset under the action of the spring force. The rubber pad moves into the circular groove, blocking the vent hole to form a closed space in the cryopreservation tube, effectively ensuring that the sample is not contaminated.
[0014] The device has a simple structure, a wide range of uses, is easy to produce, has controllable costs, and can prevent the occurrence of dangerous situations. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the side section structure of the ventilation valve of the utility model.
[0016] Figure 2 It is an external schematic diagram of the utility model.
[0017] Figure 3 It is a schematic diagram of the top view of the ventilation valve of the utility model.
[0018] In the figure:
[0019] 1. Cryotube, 2. Tube cover, 3. Vent valve, 4. Cylindrical cavity, 5. Rubber pad, 6. Spring, 7. Air outlet, 8. Vent hole, 9. Limiting convex point, 10. Circular groove, 11. Anti-slip pattern, 12. Scale. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0021] An explosion-proof cryogenic tube equipped with a vent valve, comprising a cryogenic tube 1, a tube cover 2 and a vent valve 3, wherein the lower end of the tube cover 2 is threadedly connected to the upper end of the cryogenic tube 1, and the vent valve 3 is arranged on the inner side of the tube cover 2;
[0022] The vent valve 3 includes a cylindrical cavity 4, the upper end of the cylindrical cavity 4 is fixedly connected to the middle part of the inner side of the pipe cover 2, a vent hole 8 is provided in the middle part of the bottom end of the cylindrical cavity 4, a circular groove 10 is provided at the bottom end of the cylindrical cavity 4, a rubber pad 5 is provided in the circular groove 10, the upper end of the rubber pad 5 is fixedly connected to the spring 6, the upper end of the spring 6 is connected to the upper end of the inside of the pipe cover 2, and an air outlet hole 7 is provided in the middle part of the upper end of the pipe cover 2.
[0023] A group of limiting protrusions 9 are fixedly connected to the upper end of the tube cover 2 , and the limiting protrusions 9 can prevent the rubber pad 5 from blocking the air outlet 7 .
[0024] The rubber pad 5 is circular, and has the same inner diameter as the circular groove 10 . The circular groove 10 can limit the position of the rubber pad 5 to prevent the exhaust and sealing effects from being affected by the dislocation of the rubber pad 5 .
[0025] The outer side of the tube cover 2 is provided with anti-slip grooves 11 .
[0026] A scale 12 is provided on the outer side of the freezing tube 1 .
[0027] When the pressure in the pipe is very high, it can effectively prevent the rubber pad 5 from sticking to the upper wall of the cavity 4 and blocking the air outlet 7, thereby ensuring the ventilation effect.
[0028] Working principle: After the sample is loaded into the explosion-proof cryotube 1, the tube cover 2 is screwed on, the spring 6 is always in a compressed state, and the rubber pad 5 blocks the vent 8. When the cryotube 1 is heated in a water bath, the liquid in the tube evaporates to form steam, resulting in an increase in the pressure in the tube. At this time, the steam generates an upward thrust on the rubber pad 5 through the vent 8, and the spring 6 continues to compress and moves upward under the force. The rubber pad 6 moves out of the circular groove 10, and the steam is discharged through the vent 8, the cylindrical cavity 4 and the vent 7 to adjust the pressure inside and outside the tube, thereby preventing the occurrence of tube collapse. When the high-pressure steam is discharged, the pressure in the tube decreases, and the rubber pad 5 is reset under the elastic force of the spring 6, and the rubber pad 5 moves into the circular groove 10, and the rubber pad 5 blocks the vent 8, so that a closed space is formed in the cryotube 1. In the non-heated state, the rubber pad 5 blocks the vent 8 under the action of the spring 6, so that a closed state is formed in the cryotube 1, effectively ensuring that the sample is not contaminated.
[0029] Beneficial effect: The explosion-proof cryotube obtained by the above technical solution is provided with a vent valve. When the air pressure in the tube increases, the gas is discharged in time through the exhaust valve, which effectively prevents the cryotube from bursting when heated. The device has a simple structure, a wide range of uses, is easy to produce, has controllable costs, and can prevent the occurrence of dangerous situations.
[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An explosion-proof cryogenic storage tube equipped with a vent valve, comprising a cryogenic storage tube (1), a tube cover (2) and a vent valve (3), characterized in that: The lower end of the tube cover (2) is threadedly connected to the upper end of the cryopreservation tube (1), and the inner side of the tube cover (2) is provided with the ventilation valve (3); The vent valve (3) comprises a cylindrical cavity (4), the upper end of the cylindrical cavity (4) is fixedly connected to the middle part of the inner side of the pipe cover (2), the middle part of the bottom end of the cylindrical cavity (4) is provided with a vent hole (8), the bottom end of the cylindrical cavity (4) is provided with a circular groove (10), a rubber pad (5) is provided in the circular groove (10), the upper end of the rubber pad (5) is fixedly connected to a spring (6), the upper end of the spring (6) is connected to the upper end of the pipe cover (2), and the middle part of the upper end of the pipe cover (2) is provided with an air outlet hole (7).
2. The explosion-proof cryogenic storage tube equipped with a vent valve according to claim 1, characterized in that: A group of limiting protrusions (9) are fixedly connected to the upper end of the interior of the tube cover (2), and the limiting protrusions (9) can prevent the rubber pad (5) from blocking the air outlet (7).
3. The explosion-proof cryogenic storage tube equipped with a vent valve according to claim 1, characterized in that: The rubber pad (5) is circular, and the inner diameter of the rubber pad (5) is equal to that of the circular groove (10).
4. The explosion-proof cryogenic storage tube equipped with a vent valve according to claim 1, characterized in that: The outer side of the tube cover (2) is provided with anti-slip grooves (11).
5. The explosion-proof cryogenic storage tube equipped with a vent valve according to claim 1, characterized in that: The outer side of the freezing tube (1) is provided with a scale (12).