Lifting structure and automatic liquid nitrogen tank

Abstract

The utility model discloses a lifting structure and an automatic liquid nitrogen container, the lifting structure comprises a support arm, a driving module and a lifting module, one end of the support arm is connected with the top of the automatic liquid nitrogen container, and the driving module is arranged at the other end of the support arm and is connected with the lifting module. The supporting arm is arranged at the top of the automatic liquid nitrogen tank, the driving module is fixed on the automatic liquid nitrogen tank, the lifting module is driven by the driving module to act, and the cryopreservation frame stored in the automatic liquid nitrogen tank is taken out or placed in, so that the cryopreservation frame is prevented from being manually taken and stored, time and labor are saved, and the working efficiency is improved. Biological tissue damage and worker frostbite caused by inclination of the cryopreservation rack can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultra-low temperature preservation, and particularly relates to a lifting structure and an automatic liquid nitrogen tank. Background Art

[0002] Liquid nitrogen tanks are a common type of freezing storage container, widely used in hospitals and laboratories, mainly for preserving biological tissues such as blood and stem cells. Traditional liquid nitrogen tanks are made of double-layer stainless steel. The cryotubes containing biological tissues are placed on a freezing rack, and the freezing rack is then placed inside the tank. Liquid nitrogen is introduced into the tank to keep the biological tissues in a low-temperature environment of more than one hundred degrees Celsius below zero, thereby achieving long-term preservation.

[0003] However, when storing and retrieving biological tissues from traditional liquid nitrogen tanks, one needs to manually open the tank lid, rotate the tray so that the target cryorack is at the tank door, manually take out the cryorack, remove the biological tissue, and finally manually place the cryorack back on the tray inside the tank. Due to the large size of the cryorack, retrieving the biological tissue is time-consuming and laborious, and may cause the cryorack to tilt, damaging the biological tissue or frostbite the staff. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a lifting structure that solves the problem that when users manually take biological tissue from a liquid nitrogen tank, it is time-consuming and labor-intensive, and may damage the biological tissue or frostbite the user.

[0005] The utility model also aims to provide an automatic liquid nitrogen tank using the lifting structure.

[0006] In order to achieve the above-mentioned purpose, the first technical solution of the present invention is implemented as follows: a lifting structure is used to be set on an automatic liquid nitrogen tank, and the lifting structure includes a support arm, a driving module and a lifting module. One end of the support arm is connected to the top of the automatic liquid nitrogen tank, and the driving module is set at the other end of the support arm, and the driving module is connected to the lifting module; when in use, the lifting module is driven by the driving module to move, so as to take out or store the freezing rack in the automatic liquid nitrogen tank.

[0007] Furthermore, the driving module includes a horizontal driving unit and a vertical driving unit, the horizontal driving unit is arranged on the supporting arm, and the vertical driving unit is arranged on the horizontal driving unit.

[0008] Furthermore, a guide groove is provided on the support arm, and the horizontal driving unit includes a horizontal driving member, a screw and a moving block. The horizontal driving member is arranged on the support arm, the screw is arranged parallel to the guide groove, and one end of the screw is connected to the horizontal driving member, and the other end is rotatably connected to the support arm. The moving block is sleeved on the screw, and the moving block is slidably connected to the guide groove.

[0009] Furthermore, the vertical driving unit includes a vertical driving member and a rotating roller provided on the moving block, and an output end of the vertical driving member is connected to the rotating roller.

[0010] Furthermore, the lifting module includes a lifting rope and a hook provided at one end of the lifting rope, and the other end of the lifting rope is wound around the rotating roller.

[0011] Furthermore, a limiting piece is provided at the opening of the hook.

[0012] The second technical solution of the present invention is achieved as follows: an automatic liquid nitrogen tank comprises a tank body and the above-mentioned lifting structure, wherein the lifting structure is arranged above the opening of the tank body.

[0013] Furthermore, the automatic liquid nitrogen tank also includes an insulation box arranged on the top of the tank body, the interior of the tank body is isolated from the interior of the insulation box by a plug cover arranged at the opening of the tank body, and the lifting module in the lifting structure is located on the top of the insulation box.

[0014] Furthermore, the automatic liquid nitrogen tank also includes a control module. A temperature measuring unit and a temperature regulating unit are provided in the heat preservation box. The temperature measuring unit, the temperature regulating unit and the driving module are all connected to the control module.

[0015] Furthermore, the temperature control unit includes a pipeline, a liquid inlet valve and at least one nozzle, the pipeline is arranged inside the insulation box, the liquid inlet valve and at least one nozzle are both arranged on the pipeline, and the liquid inlet valve is electrically connected to the control module.

[0016] Compared with the existing technology, the utility model has the following beneficial effects: the utility model arranges a support arm on the top of the automatic liquid nitrogen tank, fixes the driving module on the automatic liquid nitrogen tank, and drives the lifting module to move through the driving module to take out or place the freezing rack stored in the automatic liquid nitrogen tank, avoiding manual labor to take and store the freezing rack, saving time and effort, and avoiding damage to biological tissues and frostbite to workers caused by the tilt of the freezing rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a lifting structure provided in Example 1 of the present utility model;

[0018] Figure 2 A cross-sectional view of the lifting structure provided in Example 1 of the present utility model;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 A structural diagram of an automatic liquid nitrogen tank provided in Example 2 of the present utility model;

[0021] Figure 5 This is a diagram of the internal structure of the insulation box in the automatic liquid nitrogen tank provided in Example 2 of the present utility model.

[0022] In the figure, 1-support arm, 11-guide groove, 2-drive module, 21-horizontal drive unit, 211-horizontal drive member, 212-screw, 213-moving block, 22-vertical drive unit, 221-vertical drive member, 222-rotating roller, 3-lifting module, 31-lifting rope, 32-hook, 33-limiting member, 4-tank, 5-insulation box, 51-temperature measuring unit, 52-temperature adjustment unit, 521-pipeline, 522-nozzle, 6-control module. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] In the description of the present invention, it should be clarified that the terms "vertical", "transverse", "longitudinal", "front", "rear", "left", "right", "up", "down", "horizontal", etc. indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not mean that the devices or components referred to must have a specific orientation or position. Therefore, they cannot be understood as limitations on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example 1

[0026] The lifting structure provided in this embodiment has a structure such as Figure 1As shown, it is used to be set on an automatic liquid nitrogen tank. The lifting structure includes a support arm 1, a drive module 2 and a lifting module 3. One end of the support arm 1 is connected to the top of the automatic liquid nitrogen tank, and the drive module 2 is set at the other end of the support arm 1, and the drive module 2 is connected to the lifting module 3. When in use, the driving module 2 drives the lifting module 3 to move, so as to take out or store the freezing rack in the automatic liquid nitrogen tank.

[0027] Based on the above structure, the lifting structure fixes the driving module 2 on the top of the automatic liquid nitrogen tank through the supporting arm 1, and drives the lifting module 3 to move horizontally or vertically through the driving module 2 to place the freezing rack in the automatic liquid nitrogen tank or take it out from the automatic liquid nitrogen tank. The storage and retrieval operation of biological tissue does not require manual participation, which saves time and effort, and can ensure the stability of the movement of the freezing rack, avoid damage to biological tissue caused by tilting of the freezing rack, and also avoid frostbite of staff.

[0028] In some embodiments of the present application, the driving module 2 includes a horizontal driving unit 21 and a vertical driving unit 22 . The horizontal driving unit 21 is disposed on the support arm 1 , and the vertical driving unit 22 is disposed on the horizontal driving unit 21 .

[0029] In this embodiment, the horizontal driving unit 21 can drive the vertical driving unit 22 to move horizontally, and the vertical driving unit 22 can drive the lifting module 3 thereon to move up and down, so as to facilitate the removal of the freezing racks at different positions in the automatic liquid nitrogen tank and the placement of the freezing racks at different positions in the automatic liquid nitrogen tank.

[0030] Specifically, the horizontal drive unit 2 is an electric telescopic rod, a worm gear structure or other existing mechanical structures, and the vertical drive unit 22 is an electric telescopic rod, a motor drive or other existing mechanical structures.

[0031] like Figure 2 As shown, in some embodiments of the present application, a guide groove 11 is provided on the support arm 1, and the horizontal driving unit 21 includes a horizontal driving member 211, a screw 212 and a moving block 213. The horizontal driving member 211 is arranged on the support arm 1, and the screw 212 is arranged parallel to the guide groove 11, and one end of the screw 212 is connected to the horizontal driving member 211, and the other end is rotatably connected to the support arm 1. The moving block 213 is sleeved on the screw 212, and the moving block 213 is slidably connected to the guide groove 11.

[0032] In this embodiment, the horizontal driving member 211 is a driving motor. When in use, the horizontal driving member 211 drives the screw 212 to rotate, and then cooperates with the action of the guide groove 11 to make the moving block 213 move horizontally on the screw 212, thereby driving the vertical driving unit 22 and the lifting module 3 on the moving block 213 to move horizontally.

[0033] In some embodiments of the present application, the vertical driving unit 22 includes a vertical driving member 221 and a rotating roller 222 provided on the moving block 213 , and an output end of the vertical driving member 221 is connected to the rotating roller 222 .

[0034] In this embodiment, the vertical driving member 221 is a driving motor. When in use, the vertical driving member 221 drives the rotating roller 222 to rotate, so that the lifting module 3 is stored on the rotating roller 222 or extends downward.

[0035] In some embodiments of the present application, the lifting module 3 includes a lifting rope 31 and a hook 32 arranged at one end of the lifting rope 31, and the other end of the lifting rope 31 is wrapped around the rotating roller 222. By wrapping the lifting rope 31 around the rotating roller 222 or loosening the lifting rope 31, the vertical height of the hook 32 is changed to drive the freezing rack in the automatic liquid nitrogen tank to move up and down.

[0036] like Figure 3 As shown, in some embodiments of the present application, a limiting member 33 is provided at the opening of the hook 32 to prevent the freezing rack from slipping off the hook 32 when moving up and down, thereby ensuring the stability of the freezing rack movement.

[0037] Example 2

[0038] The automatic liquid nitrogen tank provided in this embodiment has a structure as follows Figure 4 As shown, it includes a tank body 4 and the lifting structure described in Example 1, and the lifting structure is arranged above the opening of the tank body 4; when in use, the freezing rack is placed in the tank body 4, and the freezing rack is taken out of the tank body 4 by using the lifting structure, or the freezing rack is placed in the tank body 4. This process does not require manual participation, saves time and effort, and has good movement stability, and will not damage biological tissues or frostbite workers.

[0039] In some embodiments of the present application, the automatic liquid nitrogen tank also includes an insulation box 5 arranged on the top of the tank body 4, the interior of the tank body 4 is isolated from the interior of the insulation box 5 by a plug cover arranged at the opening of the tank body 4, and the lifting module 3 in the lifting structure is located on the top of the insulation box 5.

[0040] In this embodiment, an insulation box 5 is provided at the outlet of the tank body 4, and the support arm 1 in the lifting structure is provided on the tank body 4 and extends to the top of the insulation box 5. The horizontal driving unit 21 in the driving module 2 can drive the vertical driving unit 22 and the lifting module 3 to move horizontally on the insulation box 5, and the vertical driving unit 22 can drive the lifting module 3 to move up and down inside the insulation box 5 and the tank body 4; when in use, the horizontal driving unit 21 drives the vertical driving unit 22 and the lifting module 3 to move above the freezing rack, and the vertical driving unit 22 is used to drive the hook 32 of the lifting module 3 to move up and down to take out the freezing rack, or place the freezing rack in the tank body 4.

[0041] like Figure 5 As shown, in some embodiments of the present application, the automatic liquid nitrogen tank further includes a control module 6, and a temperature measuring unit 51 and a temperature regulating unit 52 are provided in the thermal insulation box 5, and the temperature measuring unit 51, the temperature regulating unit 52 and the driving module 2 are all connected to the control module 6.

[0042] In this embodiment, the temperature inside the insulated box 5 is detected in real time by the temperature measuring unit 51, and the temperature detection result is sent to the control module 6. The control module 6 sends a signal to the temperature regulating unit 52 accordingly to adjust the temperature inside the insulated box 5 so that the freezing rack remains in a low-temperature environment after being taken out of the tank body 4, thereby improving the preservation effect of biological tissues.

[0043] Specifically, the temperature measuring unit 51 includes at least one temperature sensor, preferably three. The three temperature sensors are respectively arranged on the upper side, lower side and door of the insulation box 5, and can respectively detect the temperature of various places in the insulation box 5 to ensure the accuracy of temperature adjustment.

[0044] In some embodiments of the present application, the temperature control unit 52 includes a pipe 521, a liquid inlet valve and at least one nozzle 522, the pipe 521 is arranged inside the insulation box 5, the liquid inlet valve and at least one nozzle 522 are both arranged on the pipe 521, and the liquid inlet valve is electrically connected to the control module 6.

[0045] In this embodiment, when the temperature in the insulation box 5 needs to be lowered, the control module 6 controls the liquid inlet valve to open, and liquid nitrogen is sprayed into the insulation box 5 through the pipe 521 and the nozzle 522. The liquid nitrogen vaporizes to lower the temperature in the insulation box 5. When the temperature in the insulation box 5 reaches the use requirement, the control module 6 controls the liquid inlet valve to close.

[0046] The method for using the automatic liquid nitrogen tank with a lifting structure provided in this embodiment is as follows:

[0047] When taking out the target freezing rack stored in the tank body 4, first rotate the target freezing rack to the opening of the tank body 4, open the door of the insulated box 5, take out the plug cover at the opening of the tank body 4, and finally use the horizontal driving member 211 to move the moving block 213 to the top of the target freezing rack, and use the vertical driving member 221 to drive the rotating roller 222 to rotate, so that the hanging rope 31 in the lifting module 3 is extended, and the hook 32 moves downward and connects with the hanging ring on the target freezing rack. The vertical driving member 221 is rotated in the opposite direction to tighten the hanging rope 31, and the hook 32 drives the target freezing rack to move upward into the insulated box 5, and the plug cover is placed back on the tank body 4.

[0048] The temperature inside the incubator 5 is detected in real time by the temperature measuring unit 51. When the temperature rises, the temperature regulating unit 52 is used to adjust the temperature so that the freezing rack in the incubator 5 is always in a low temperature environment. After the target biological tissue is taken out, the plug cover is removed, the vertical driving member 221 is driven to rotate, and the hanging rope 31 is extended to place the target freezing rack in the tank body 4. After the hanging rope 31 is retracted, the plug cover is replaced and the door of the incubator 5 is closed.

[0049] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A lifting structure for being installed on an automatic liquid nitrogen tank, characterized in that: The lifting structure comprises a support arm (1), a drive module (2) and a lifting module (3); one end of the support arm (1) is connected to the top of the automatic liquid nitrogen tank; the drive module (2) is arranged at the other end of the support arm (1), and the drive module (2) is connected to the lifting module (3); when in use, the drive module (2) drives the lifting module (3) to move, so as to take out or store the freezing rack in the automatic liquid nitrogen tank.

2. A lifting structure according to claim 1, characterized in that: The driving module (2) comprises a horizontal driving unit (21) and a vertical driving unit (22); the horizontal driving unit (21) is arranged on the supporting arm (1); and the vertical driving unit (22) is arranged on the horizontal driving unit (21).

3. A lifting structure according to claim 2, characterized in that: The support arm (1) is provided with a guide groove (11), and the horizontal driving unit (21) comprises a horizontal driving member (211), a screw rod (212) and a moving block (213). The horizontal driving member (211) is arranged on the support arm (1), the screw rod (212) is arranged parallel to the guide groove (11), and one end of the screw rod (212) is connected to the horizontal driving member (211), and the other end is rotatably connected to the support arm (1). The moving block (213) is sleeved on the screw rod (212), and the moving block (213) is slidably connected to the guide groove (11).

4. A lifting structure according to claim 3, characterized in that: The vertical driving unit (22) comprises a vertical driving member (221) and a rotating roller (222) arranged on the moving block (213), and the output end of the vertical driving member (221) is connected to the rotating roller (222).

5. A lifting structure according to claim 4, characterized in that: The lifting module (3) comprises a lifting rope (31) and a hook (32) arranged at one end of the lifting rope (31), and the other end of the lifting rope (31) is wound around the rotating roller (222).

6. A lifting structure according to claim 5, characterized in that: A limiting member (33) is provided at the opening of the hook (32).

7. An automatic liquid nitrogen tank, characterized in that: It comprises a tank body (4) and a lifting structure according to any one of claims 1 to 6, wherein the lifting structure is arranged above the opening of the tank body (4).

8. The automatic liquid nitrogen tank according to claim 7, characterized in that: The automatic liquid nitrogen tank further comprises an insulation box (5) arranged on the top of the tank body (4); the interior of the tank body (4) is isolated from the interior of the insulation box (5) by a plug cover arranged at the opening of the tank body (4); and the lifting module (3) in the lifting structure is located on the top of the insulation box (5).

9. The automatic liquid nitrogen tank according to claim 8, characterized in that: The automatic liquid nitrogen tank further comprises a control module (6); a temperature measuring unit (51) and a temperature regulating unit (52) are provided in the heat preservation box (5); the temperature measuring unit (51), the temperature regulating unit (52) and the driving module (2) are all connected to the control module (6).

10. The automatic liquid nitrogen tank according to claim 9, characterized in that: The temperature adjustment unit (52) comprises a pipeline (521), a liquid inlet valve and at least one nozzle (522); the pipeline (521) is arranged inside the thermal insulation box (5); the liquid inlet valve and at least one nozzle (522) are both arranged on the pipeline (521); and the liquid inlet valve is electrically connected to the control module (6).

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