CN214467818U - Liquid nitrogen holding vessel convenient to pick up sample that drops - Google Patents
Liquid nitrogen holding vessel convenient to pick up sample that drops Download PDFInfo
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- CN214467818U CN214467818U CN202120648655.5U CN202120648655U CN214467818U CN 214467818 U CN214467818 U CN 214467818U CN 202120648655 U CN202120648655 U CN 202120648655U CN 214467818 U CN214467818 U CN 214467818U
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- cavity
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- isolation net
- liquid nitrogen
- lifting rod
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Abstract
The application provides a liquid nitrogen storage tank convenient for picking up a dropped sample; relate to the basic experimental facilities field of biomedical, which comprises a tank body, separation net and lifting rod, the jar body is equipped with open-top's cavity, separation net circumference and the laminating of cavity inside wall, a sample for accepting the separation net top and dropping, lifting rod one end bending type becomes the couple, the other end is connected the separation net in probing into the cavity from the cavity opening, lifting rod is used for driving the relative position that separation net changes and cavity under the exogenic action, through arranging the structure of accepting of separation net as the sample that drops at the internal arrangement of jar, and change the position of separation net through lifting rod, promote the separation net to the open position who is close to the holding vessel, thereby make the sample that drops be close to jar mouth, reduce the degree of difficulty of picking up to the sample that drops.
Description
Technical Field
The application relates to the field of biomedical basic experimental equipment, in particular to a liquid nitrogen storage tank convenient for picking up a dropped sample.
Background
The liquid nitrogen is in a liquid form of nitrogen at extremely low temperature (below-192 ℃), and the biological tissue sample is preserved by utilizing the ultralow temperature characteristic of the nitrogen in the basic experiment of biomedicine, so that the decomposition and the damage of bioactive components are prevented. The method specifically comprises the steps of placing a freezing tube filled with a biological sample in a metal basket, immersing the basket in liquid nitrogen in a liquid nitrogen storage tank, sealing the tank opening for storage, and taking out the basket from the liquid nitrogen storage tank when an experiment is needed.
The inventors have found that in sample access operations it often happens that the vial containing the sample falls from the basket to the bottom of the storage tank. Because the liquid nitrogen is extremely low in temperature and cannot be directly picked up by hands, two methods are generally adopted: (1) using a long handled clip or receptacle for pick up. However, the depth of the liquid nitrogen tank is about 1-1.5 m, and an appliance with a proper size is difficult to find; meanwhile, due to the heat preservation requirement, the bottle mouth of the liquid nitrogen storage tank is usually small in diameter and long and narrow in neck pipe, the operable range of a long-handle clamp or a container is severely limited, and a sample at the bottom of the tank is difficult to pick up. (2) The liquid nitrogen in the tank is transferred to other tanks, the tank body is tilted backwards after the liquid nitrogen is emptied, and the sample is taken out. However, the liquid nitrogen transfer operation is dangerous, and severe frostbite of experimenters can be caused if liquid nitrogen is spilled.
SUMMERY OF THE UTILITY MODEL
The purpose of this application is to the defect that prior art exists, provides a liquid nitrogen holding vessel convenient to pick up the sample that drops, through arrange the isolation net at the internal structure of accepting as the sample that drops to through the position that carries the pull rod change isolation net, promote the isolation net to the open position who is close to the holding vessel, thereby make the sample that drops be close to jar mouth, reduce the degree of difficulty of picking up to the sample that drops.
In order to realize the purpose, the following technical scheme is adopted:
a liquid nitrogen storage tank convenient for picking up a dropped sample comprises a tank body, an isolation net and a lifting rod, wherein the tank body is provided with a cavity with an opening at the top, the isolation net is attached to the inner side wall of the cavity in the circumferential direction and used for bearing the sample dropped above the isolation net, one end of the lifting rod is bent to form a hook, and the other end of the lifting rod extends into the cavity from the opening of the cavity and is connected with the isolation net; at least two guide rails are arranged at different positions of the side wall of the cavity along the direction of a bus, guide rail grooves are arranged at the positions of the side edge of the isolation net corresponding to the guide rails, and the guide rails are in sliding fit with the guide rail grooves.
Furthermore, the isolation net is of a grid structure with the same shape as the radial section of the cavity, and is of a conical surface structure with a low middle part and high periphery, and is used for enabling the received sample to roll to the central position of the isolation net under the action of gravity.
Furthermore, the isolation net is of a conical bus-bar surface-shaped structure, and the lifting rod is connected to the non-central position of the isolation net.
Furthermore, the guide rail is arranged along the whole length of a bus of the inner wall of the cavity, and the lifting rod is used for driving the isolation net to slide under the action of external force so as to change the relative position of the isolation net in the cavity.
Furthermore, the number of the guide rails is two, two guide rail grooves are correspondingly arranged on the isolation net, and the two guide rails are located at two ends of the cavity with the same diameter.
Furthermore, one end of the lifting rod is connected with the isolation net through a revolute pair, and the hook at the other end can be hooked in a groove formed in the edge of the opening of the cavity.
Furthermore, the revolute pair comprises a convex block positioned at the end part of the lifting rod and a connecting block positioned on the isolation net, wherein a groove is formed in the connecting block, and the groove is rotatably connected with the convex block.
Furthermore, a clamping rod is arranged between the two ends of the lifting rod, when the isolation net moves upwards to the maximum stroke position along the axial direction of the cavity, the clamping rod is flush with the opening of the cavity and can be hooked in a groove arranged on the edge of the opening of the cavity, and the effect of fixing the position of the isolation net is achieved.
Furthermore, the clamping rod is connected with the side wall of the lifting rod at one end, and the axis of the hook is coplanar with the axis of the clamping rod.
Furthermore, when the bottom of the isolation net contacts the bottom surface of the cavity, the hook is flush with the opening of the cavity and can be hooked in a groove arranged at the edge of the opening of the cavity, so that the effect of fixing the position of the isolation net is achieved.
Compared with the prior art, the application has the advantages and positive effects that:
(1) the separation net is arranged in the tank body to serve as a bearing structure of a falling sample, the position of the separation net is changed through the lifting rod, the separation net is lifted to the opening position close to the storage tank, the falling sample is close to the tank opening, the picking difficulty of the falling sample is reduced, and the falling sample can be taken out without liquid nitrogen transfer.
(2) When lifting rod one end bending type becomes the couple, set up the screens pole in lifting rod middle part, promote separation net position to top extreme position back, screens pole and jar body opening parallel and level to can collude in the recess that sets up at the opening border, and then fixed separation net position conveniently picks up the operation that drops the sample.
(3) The separation net structure with the lower middle part and the higher periphery is adopted, so that the sample can roll to the central position under the action of gravity after falling, and the falling sample can be close to by vertically clamping downwards along the opening of the tank during picking; the lifting rod is located at the non-central position of the isolation net, so that a pickup path is avoided, interference on pickup operation is reduced, and the success rate is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic sectional view showing a liquid nitrogen storage tank in example 1 of the present application;
FIG. 2 is a schematic structural view of the positioning rod hooking the opening edge of the can body in embodiment 1 of the present application;
FIG. 3 is a schematic view showing the structure of an isolation net in example 1 of the present application;
fig. 4 is a partially enlarged schematic view of fig. 2.
In the figure, 1 a tank body, 2 cavities, 3 guide rails, 4 isolation nets, 401 guide rail grooves, 5 lifting rods, 6 revolute pairs, 601 convex blocks, 602 grooves, 7 dropping samples, 8 clamping rods, 9 hooks, 10 cavity openings and 11 lifting baskets.
Detailed Description
As described in the background art, in the operation of storing and taking samples in the liquid nitrogen tank in the prior art, the condition that the freezing storage pipe filled with the samples falls from the basket to the bottom of the tank often occurs, the picking difficulty is high, and personnel are extremely easy to hurt is easily caused.
Example 1
In an exemplary embodiment of the present application, as shown in fig. 1-3, a liquid nitrogen storage tank is provided to facilitate picking up a dropped sample.
The liquid nitrogen separation device mainly comprises a tank body 1 with a storage cavity 2, a separation net 4 arranged in the cavity 2 and a lifting rod 5 connected with the separation net 4, wherein the separation net 4 is of a grid structure, liquid nitrogen can be guaranteed to penetrate through a separation net 4 layer and can be used for bearing a dropped sample 7, the separation of the sample and the inner bottom surface of the cavity 2 is achieved, one end of the lifting rod 5 is connected with the separation net 4, and the other end of the lifting rod extends to the outside of the tank body 1 through an opening in the top of the cavity 2 and is used for receiving the action of external force to drive the separation net 4 to move in the cavity 2.
Specifically, as shown in fig. 1-2, the tank body 1 is provided with a cavity 2 with an open top, a thermal insulation material is arranged between the cavity 2 and the outer wall of the tank body 1, and the tank neck formed by the open top of the cavity 2 is thickened. The edge of the cavity opening 10 of the tank body 1 is provided with a plurality of grooves for accommodating the clamping rod 8, the hook 9 and the hook of the lifting basket 11.
It can be understood that, for the convenience to keep warm to it, jar body 1 still cooperates the heat preservation lid in cavity opening 10 position, and the heat preservation lid corresponds the neck pipe lateral wall position and is equipped with the recess that holds lifting rod 5, dodges lifting rod 5 and locates the position to make lifting rod 5 attached in neck pipe lateral wall position, reduce the space.
The groove structure on the heat preservation cover can be provided in a plurality of ways, and is used for other baskets 11 for sample preservation.
The circumference of the isolation net 4 is attached to the inner side wall of the cavity 2 and used for bearing a sample falling from the upper side of the isolation net 4, one end of the lifting rod 5 is bent to form a hook 9, the other end of the lifting rod extends into the cavity 2 from the cavity opening 10 and is connected with the isolation net 4, and the lifting rod 5 is used for driving the isolation net 4 to axially reciprocate along the cavity 2 under the action of external force, so that the relative position of the isolation net 4 in the cavity 2 is changed, and the distance between the isolation net 4 and the opening is increased or reduced.
The isolation net 4 is arranged between the metal basket 11 where the cryopreservation tube filled with the biological sample is located and the bottom surface of the inner wall of the cavity, so that the sample falling from the metal basket 11 can be completely received by the isolation net 4.
It can be understood that, in order to avoid the sample from dropping between the clearance of isolation net 4 and cavity 2 inside wall, isolation net 4 circumference and cavity 2 inside wall laminating make its clearance be less than the size of minimum sample, satisfy and accept the demand, avoid omitting the inconvenient problem of taking out of sample that leads to.
The structure of the cavity 2 in the tank body 1 is configured as required, taking the cavity 2 with a common circular section as an example, the isolation net 4 is a grid structure with the same shape as the section of the cavity 2, namely the circumference of the isolation net 4 is circular; the mesh size of the mesh structure is smaller than the minimum size of the stored sample, so that the sample is prevented from passing through or being clamped in the meshes of the isolation net 4.
The shape of the meshes can be selected to be rectangular meshes, circular meshes or other special-shaped meshes, so that the bearing strength requirement can be met, and liquid nitrogen can smoothly pass through the isolation net 4.
When the falling sample is received by the isolation net 4, the isolation net 4 and the falling sample are lifted upwards by the lifting rod 5, so that the sample is gradually close to the position of the cavity opening 10 from the lower part of the cavity 2, and the sample is convenient to pick.
It should be pointed out that, because of the heat preservation needs, the neck pipe position diameter of jar body 1 is less, and cavity 2 is inside to need great space to deposit the sample, therefore the diameter of the separation net 4 of circumference and cavity 2 inside wall laminating is great, and then even will drop the sample through separation net 4 and promote to be close to the open position, adopt the long handle instrument to pick up the sample and still can receive the restraint of open diameter, lead to its scope that can pick up to be limited, cause the sample that part is in separation net 4 border still to be difficult to pick up.
In order to solve the above problem, the isolation net 4 is configured as a conical surface structure with a low middle part and a high periphery, and is used for enabling the received sample to roll to the central position of the isolation net 4 under the action of gravity.
In this embodiment, the separation net 4 is adapted to the cavity 2 with a circular cross section, and has a conical surface structure with a low middle part and high periphery, so that the received sample can roll to the center of the separation net 4 under the action of gravity.
The separation net 4 is arranged in the tank body 1 to serve as a bearing structure of a falling sample, the position of the separation net 4 is changed through the lifting rod 5, and the separation net 4 is lifted to a position close to an opening of the storage tank, so that the falling sample is close to a tank opening, and the picking difficulty of the falling sample is reduced;
further, adopt the low isolation net 4 structure of high all around in the middle of the centre, can roll to the intermediate position under the action of gravity after the sample falls, when picking up, press from both sides down along the opening is vertical and get and can be close to the sample that drops, solve the less restricted problem of operation range that leads to picking up of the opening position diameter of jar body 1 cavity.
The lifting rod 5 is located at the non-central position of the isolation net 4 and attached to the inner wall of the opening, a pickup path is avoided, interference on pickup operation is reduced, and success rate is improved.
When a sample drops a lot, the isolation net 4 bears a lot of sample load, and when the isolation net 4 is pulled by the lifting rod 5 to act, the isolation net 4 may be deviated and inclined, and a gap is generated between the side surface of the isolation net 4 and the inner wall of the cavity 2, so that the sample drops to the bottom of the cavity 2; aiming at the problems, the deviation of the isolation net 4 is limited by arranging the guide rails 3, at least two guide rails 3 are arranged at different positions on the side wall of the cavity 2 along the direction of a bus, guide rail grooves 401 are arranged at the positions of the side edges of the isolation net 4 corresponding to the guide rails 3, and the guide rails 3 are in sliding fit with the guide rail grooves 401.
In this embodiment, there are two guide rails 3, two guide rail grooves 401 are correspondingly disposed on the separation net 4, and the two guide rails 3 are located at two ends of the cavity 2 with the same diameter.
In other embodiments, a plurality of guide rails 3 can be configured and arranged symmetrically along the axis of the cavity 2, so as to improve the capability of limiting the deviation of the isolation net 4.
It should be particularly pointed out that the anti-deviation requirement of the isolation net 4 can be met by arranging the reinforcing ribs on the isolation net 4, the strength of the isolation net 4 is improved, particularly the strength of the position of the periphery of the isolation net attached to the cavity 2 is improved, the deformation of the isolation net 4 when bearing the sample load is reduced, the position of the isolation net is restrained, a gap between the side surface and the inner wall of the cavity 2 is avoided, and the bearing capacity of the sample is improved.
A clamping rod 8 is arranged between two ends of the lifting rod 5, when the separation net 4 moves upwards to the maximum stroke position along the axial direction of the cavity 2, the clamping rod 8 is flush with the cavity opening 10 and can be hooked in a groove arranged at the edge of the cavity opening 10, and the effect of fixing the position of the separation net 4 is achieved.
It can be understood that the opening position of the cavity is also the opening position of the tank body, one end of the clamping rod is connected with the side wall of the lifting rod, and the axis of the hook is coplanar with the axis of the clamping rod; when 5 one ends of the lifting rod are bent to form the hook 9, the clamping rod 8 is arranged in the middle of the lifting rod 5, after the isolation net 4 is lifted to the top extreme position, the clamping rod 8 is hooked in the groove formed in the opening edge of the tank body 1, the isolation net 4 is fixed, and the operation of dropping the sample 7 is convenient to pick up.
As shown in fig. 1 and 2, when the hook 9 is hooked at the edge of the cavity opening 10, the position-locking rod 8 is located at the cavity position below the neck tube of the tank body, the problem that the cover body is blocked due to the fact that the position-locking rod is located at the neck tube region is avoided, the position of the position-locking rod 8 is avoided being matched with the position of the cover body and the neck tube, and the large bulge is avoided being blocked to install the heat-preservation cover.
Correspondingly, one end of the lifting rod 5 is connected with the isolation net 4 through a revolute pair 6, and the hook 9 at the other end can be hooked in a groove arranged at the edge of the cavity opening 10; the revolute pair 6 comprises a convex block 601 positioned at the end part of the lifting rod 5 and a connecting block positioned on the isolation net 4, a groove 602 is arranged on the connecting block, and the groove 602 is rotatably connected with the convex block 601.
Through revolute pair 6 structure, can make the lifting rod 5 rotate for the separation net 4, suitably adjust the fixed position of lifting rod 5 for tip couple 9, middle part screens pole 8 all can adjust to required position when operating condition, conveniently fix the position of separation net 4.
When the bottom of the isolation net 4 contacts the bottom surface of the cavity 2, the hook 9 is flush with the cavity opening 10 and can be hooked in a groove arranged at the edge of the cavity opening 10.
The position of the isolation net 4 is reduced as much as possible, the occupation of a liquid nitrogen area is reduced, the range of usable areas is enlarged, and the storage requirements of more biological samples can be met.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A liquid nitrogen storage tank convenient for picking up a dropped sample is characterized by comprising a tank body, an isolation net and a lifting rod, wherein the tank body is provided with a cavity with an opening at the top; at least two guide rails are arranged at different positions of the side wall of the cavity along the direction of a bus, guide rail grooves are arranged at the positions of the side edge of the isolation net corresponding to the guide rails, and the guide rails are in sliding fit with the guide rail grooves.
2. The liquid nitrogen storage tank convenient for picking up the dropped sample as claimed in claim 1, wherein the isolation net is a grid structure with the same shape as the radial section of the cavity, and the isolation net is a conical surface structure with a low middle part and a high periphery and is used for enabling the received sample to roll to the central position of the isolation net under the action of gravity.
3. The liquid nitrogen storage tank convenient for picking up the dropped sample as claimed in claim 2, wherein the isolation net is in a conical generatrix surface-shaped structure, and the lifting rod is connected to a non-central position of the isolation net.
4. The liquid nitrogen storage tank convenient for picking up the dropped sample as claimed in claim 1, wherein the guide rail is arranged along the whole length of a generatrix of the inner wall of the cavity, and the lifting rod is used for driving the isolation net to slide under the action of external force so as to change the relative position of the isolation net and the cavity.
5. The liquid nitrogen storage tank convenient for picking up the dropped sample as claimed in claim 4, wherein there are two guide rails, and two guide rail grooves are correspondingly arranged on the separation net, and the two guide rails are located at two ends of the same diameter of the cavity.
6. The liquid nitrogen storage tank convenient for picking up the dropped sample as claimed in claim 1, wherein one end of the lifting rod is connected with the isolation net through a revolute pair, and the other end of the lifting rod can be hooked on the edge of the opening of the cavity.
7. The liquid nitrogen storage tank convenient for picking up the dropped sample as claimed in claim 6, wherein the rotation pair comprises a projection at the end of the lifting rod and a connecting block on the isolation net, the connecting block is provided with a groove, and the groove is rotatably connected with the projection.
8. The liquid nitrogen storage tank convenient for picking up dropped samples as claimed in claim 1, wherein a clamping rod is arranged between two ends of the lifting rod, when the isolation net moves upwards along the axial direction of the cavity to the maximum stroke position, the clamping rod is flush with the opening of the cavity and can be hooked on the edge of the opening of the cavity to fix the position of the isolation net.
9. The liquid nitrogen storage tank for facilitating the pick-up of dropped samples of claim 8, wherein said catch bar is attached at one end to a side wall of the lift bar, and the axis of the hook is coplanar with the axis of the catch bar.
10. The liquid nitrogen storage tank for facilitating the pick-up of a dropped sample as claimed in claim 1, wherein the hook is flush with the opening of the chamber when the bottom of the separation screen contacts the inner bottom surface of the chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120648655.5U CN214467818U (en) | 2021-03-30 | 2021-03-30 | Liquid nitrogen holding vessel convenient to pick up sample that drops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120648655.5U CN214467818U (en) | 2021-03-30 | 2021-03-30 | Liquid nitrogen holding vessel convenient to pick up sample that drops |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214467818U true CN214467818U (en) | 2021-10-22 |
Family
ID=78176336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120648655.5U Expired - Fee Related CN214467818U (en) | 2021-03-30 | 2021-03-30 | Liquid nitrogen holding vessel convenient to pick up sample that drops |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214467818U (en) |
-
2021
- 2021-03-30 CN CN202120648655.5U patent/CN214467818U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211022 |