Stem cell storage tank facilitating automatic liquid nitrogen filling

Abstract

The utility model discloses a stem cell storage tank convenient for automatic filling of liquid nitrogen, which relates to the technical field of stem cell storage and comprises a tank body, supporting legs, a locking mechanism and an automatic filling component. The supporting legs are fixedly arranged at the bottom of the tank body; the top of the tank body is rotationally connected with a top cover; the locking mechanism is fixedly arranged on the top of the top cover and used for rapidly locking the top cover. According to the liquid level meter, the position of the floating ball on the liquid level meter is changed along with the change of the liquid level, and when the floating ball drops to the bottommost part, the control panel can send out an alarm signal. And then, the low-temperature electromagnetic valve is automatically opened, and liquid nitrogen flows into the tank body through the liquid nitrogen valve to be supplied. And meanwhile, a temperature sensor arranged in the device continuously monitors the temperature in the tank body. According to the system, the filling process of liquid nitrogen can be automatically regulated and controlled, the burden of operators is effectively relieved, timely and accurate liquid nitrogen supply is ensured, and the overall operation efficiency and safety are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to stem cell storage technical field, concretely is stem cell storage tank convenient for automatic filling of liquid nitrogen. BACKGROUND

[0002] Gas phase storage tank mainly utilizes liquid nitrogen evaporation cooling to preserve samples. The temperature of liquid nitrogen under normal pressure is extremely low, which is -196.56℃, which is the critical point of liquid nitrogen. Through high vacuum insulation technology, the evaporation rate of liquid nitrogen can be reduced, so as to keep the pressure in the tank stable. In the gas phase storage tank, liquid nitrogen is usually stored at the bottom of the tank, and the sample is placed in the storage space above the liquid nitrogen, and the low temperature environment generated by the evaporation of liquid nitrogen is used to preserve the sample.

[0003] In the prior art, with the progress of science and technology and the continuous expansion of application, the market development space of gas phase storage tank is increasing. Especially in the field of biological sample storage, gas phase storage tank has become the mainstream application of international biological sample library. The patent file with the announcement number CN220640884U records a kind of biological sample liquid nitrogen storage tank, which can conveniently access biological samples located at different positions in the tank, improve work efficiency, and reduce the risk of frostbite in long-time operation of workers.

[0004] However, the device is not convenient for automatic filling of liquid nitrogen according to the liquid level of liquid nitrogen. Since liquid nitrogen cannot be automatically filled in time, the liquid nitrogen in the gas phase storage tank will gradually run out, causing the temperature of the storage space to rise and unable to maintain the required low temperature environment. This will directly affect the quality and stability of the stored samples and shorten their effective storage time.

[0005] Based on this, the stem cell storage tank convenient for automatic filling of liquid nitrogen is provided, which can eliminate the disadvantages of the existing device. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing stem cell storage tank convenient for automatic filling of liquid nitrogen to solve the problems in the background art.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] The stem cell storage tank convenient for automatic filling of liquid nitrogen comprises a tank body.

[0009] Supporting feet are fixedly arranged at the bottom of the tank body, and a top cover is rotatably connected to the top of the tank body.

[0010] A locking mechanism is fixedly arranged at the top of the top cover and is used for quickly locking the top cover.

[0011] An automatic filling assembly is fixedly arranged on the inner surface of the tank body and is used for automatically filling liquid nitrogen.

[0012] On the basis of the above technical solutions, the utility model further provides the following optional technical solutions.

[0013] In an alternative, the locking mechanism includes a locking bracket, the top of the locking bracket is fixedly provided with a top cover, the inner surface of the locking bracket is fixedly connected with a sliding bracket, the inner surface of the sliding bracket is slidingly connected with a rack, the rack penetrates through the inner surface of the locking bracket and extends to the outer surface of the locking bracket, the end of the rack is fixedly connected with a sliding rod, the inner surface of the locking bracket is fixedly connected with a mounting bracket, the outer surface of the sliding rod is slidingly connected with the inner surface of the mounting bracket, the end of the rack is fixedly connected with a return spring, the other end of the return spring is fixedly connected with the outer surface of the mounting bracket.

[0014] In an alternative, the inner surface of the locking bracket is rotatably provided with a driving assembly for driving the rack to lock.

[0015] In an alternative, the driving assembly includes a gear, the gear is rotatably provided on the inner surface of the locking bracket, the gear is engaged with the rack, the center shaft of the gear is fixedly connected with a knob, the top end of the knob penetrates through the inner surface of the locking bracket and extends to the outer surface of the locking bracket, the outer surface of the tank body is fixedly connected with a lock adapted to the rack.

[0016] In an alternative, the automatic filling assembly includes a liquid nitrogen coating layer, the liquid nitrogen coating layer is fixedly provided on the inner surface of the tank body, a vacuum layer is arranged between the liquid nitrogen coating layer and the tank body, the inner surface of the liquid nitrogen coating layer is fixedly connected with a measuring bracket, the top of the measuring bracket is fixedly connected with a low-temperature electromagnetic valve, the bottom of the low-temperature electromagnetic valve is fixedly connected with a liquid level meter, the top of the measuring bracket is fixedly connected with a liquid nitrogen valve, the input end and the output end of the liquid nitrogen valve are both communicated with a conveying pipe.

[0017] In an alternative, the top of the top cover is fixedly connected with a handle, the top of the top cover is fixedly connected with a lifting device, and the top of the top cover is fixedly connected with a control panel.

[0018] In an alternative, the end of the rack is provided with an extrusion slope.

[0019] In an alternative, the outer surface of the liquid level meter is slidingly connected with a floating ball.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. In this utility model, the lock catch contacts the compression ramp on the rack, pushing the rack to slide on the sliding bracket and compressing the return spring. The return spring then resets the rack and engages the lock catch, completing the locking process. To unlock, the operator turns the knob, which rotates the gear. As the gear meshes with the rack, the rotation of the gear causes the rack to slide and adjust, separating the rack from the lock catch, thereby releasing the lock. The entire process is achieved through the coordinated action of the lock catch, rack, sliding bracket, return spring, knob, and gear, making it easy to operate and effectively controlling the opening and closing of the top cover.

[0022] 2. In this utility model, the float on the level gauge changes position as the liquid level fluctuates. When the float reaches the bottom, the control panel issues an alarm. Subsequently, a cryogenic solenoid valve automatically opens, allowing liquid nitrogen to flow into the tank through the valve. Simultaneously, a built-in temperature sensor continuously monitors the internal temperature of the tank. This system automatically controls the liquid nitrogen filling process, effectively reducing the operator's burden, ensuring timely and accurate liquid nitrogen supply, and improving overall operational efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the present utility model.

[0024] Figure 2 It is a structural schematic diagram of the locking bracket in the utility model.

[0025] Figure 3 It is a structural diagram of the locking mechanism in the utility model.

[0026] Figure 4 It is a structural diagram of the automatic filling component in the utility model.

[0027] Figure 5 It is a structural diagram of the liquid level gauge in this utility model.

[0028] Notes on the accompanying figures: 1. Tank body; 2. Support legs; 3. Top cover; 4. Locking bracket; 5. Sliding bracket; 6. Rack; 7. Sliding rod; 8. Mounting bracket; 9. Return spring; 10. Gear; 11. Knob; 12. Lock; 13. Liquid nitrogen coating; 14. Vacuum layer; 15. Measuring bracket; 16. Cryogenic solenoid valve; 17. Liquid level gauge; 18. Liquid nitrogen valve; 19. Delivery pipe; 20. Handle; 21. Lifting; 22. Control panel. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0030] In one embodiment,Figures 1-5 As shown in the drawings, the stem cell storage tank facilitating automatic filling of liquid nitrogen comprises a tank body 1, supporting feet 2, a locking mechanism and an automatic filling assembly; the supporting feet 2 are fixedly arranged at the bottom of the tank body 1, and the top of the tank body 1 is rotationally connected with a top cover 3; the locking mechanism is fixedly arranged at the top of the top cover 3 and is used for quickly locking the top cover 3; the supporting feet 2 are arranged to facilitate placement and support of the tank body 1; the automatic filling assembly is fixedly arranged on the inner surface of the tank body 1 and is used for automatic filling of liquid nitrogen; the top of the top cover 3 is fixedly connected with a handle 20, which facilitates manual opening of the top cover 3 by an operator; the top of the top cover 3 is fixedly connected with a lifting handle 21, which facilitates transfer of the tank body 1; and the top of the top cover 3 is fixedly connected with a control panel 22, which facilitates observation of temperature and liquid level.

[0031] In one embodiment, as shown in Figure 2 and Figure 3 The locking mechanism comprises a locking bracket 4 fixedly arranged at the top of the top cover 3, a sliding bracket 5 fixedly connected with the inner surface of the locking bracket 4, a rack 6 slidingly connected with the inner surface of the sliding bracket 5, the rack 6 penetrating through the inner surface of the locking bracket 4 and extending to the outer surface of the locking bracket 4, a sliding rod 7 fixedly connected with the end of the rack 6, a mounting bracket 8 fixedly connected with the inner surface of the locking bracket 4, the outer surface of the sliding rod 7 slidingly connected with the inner surface of the mounting bracket 8, a reset spring 9 fixedly connected with the end of the rack 6 and the other end of the reset spring 9 fixedly connected with the outer surface of the mounting bracket 8, and a driving assembly rotationally arranged on the inner surface of the locking bracket 4 and used for driving the rack 6 to lock, the end of the rack 6 being provided with a pressing slope, the rack 6 being pressed by a lock catch 12 to slide on the inner surface of the sliding bracket 5 and press the reset spring 9, and then the reset spring 9 drives the rack 6 to reset, so that the rack 6 is inserted into the lock catch 12 to lock.

[0032] In one embodiment, as shown in Figure 2 and Figure 3 The driving assembly comprises a gear 10 rotationally arranged on the inner surface of the locking bracket 4, the gear 10 being engaged with the rack 6, a knob 11 fixedly connected with the center axis of the gear 10, the top end of the knob 11 penetrating through the inner surface of the locking bracket 4 and extending to the outer surface of the locking bracket 4, and a lock catch 12 fixedly connected with the rack 6 on the outer surface of the tank body 1, the gear 10 being arranged to facilitate sliding of the rack 6 when the gear 10 is rotated, so that the rack 6 is away from the lock catch 12 to release the lock, and the knob 11 being arranged to facilitate manual rotation of the gear 10.

[0033] In one embodiment, as shown in Figure 4 and Figure 5As shown, the automatic filling assembly includes a liquid nitrogen coating layer 13 fixedly arranged on the inner surface of the tank body 1, a vacuum layer 14 arranged between the liquid nitrogen coating layer 13 and the tank body 1, an inner surface of the liquid nitrogen coating layer 13 fixedly connected with a measuring support 15, a top of the measuring support 15 fixedly connected with a low-temperature electromagnetic valve 16, a bottom of the low-temperature electromagnetic valve 16 fixedly connected with a liquid level meter 17, a top of the measuring support 15 fixedly connected with a liquid nitrogen valve 18, the liquid nitrogen valve 18 having a conveying pipe 19 in communication with the input end and the output end, the outer surface of the liquid level meter 17 slidably connected with a float ball, the float ball sliding downward, the control panel 22 issuing an alarm, and then the low-temperature electromagnetic valve 16 working to make the liquid nitrogen supplement through the liquid nitrogen valve 18, and the outer surface of the liquid nitrogen valve 18 in communication with a temperature sensor for detecting the temperature inside the tank body 1.

[0034] The above embodiment discloses a stem cell storage tank facilitating automatic filling of liquid nitrogen, wherein when the top cover 3 needs to be closed, the rack 6 contacts the lock catch 12, the lock catch 12 extrudes the extrusion slope on the rack 6, so that the rack 6 slides on the sliding support 5 and extrudes the return spring 9, then the return spring 9 drives the rack 6 to reset and is locked in the lock catch 12, when unlocking is needed, the operator twists the knob 11, the knob 11 rotates to drive the gear 10 to rotate, since the rack 6 is engaged with the gear 10, the gear 10 drives the rack 6 to slide and adjust, so that the rack 6 is away from the lock catch 12, thereby unlocking, the float ball on the liquid level meter 17 adjusts the position according to the liquid level, when the float ball is at the bottom, the control panel 22 alarms, then the low-temperature electromagnetic valve 16 is opened, so that the liquid nitrogen is discharged through the liquid nitrogen valve 18 to the tank body 1 for liquid nitrogen supply, the temperature sensor is arranged to detect the temperature inside the tank body 1, the device can automatically control the filling of liquid nitrogen, reducing the trouble for the operator.

[0035] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which shall be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A stem cell storage tank facilitating automatic filling of liquid nitrogen, comprising: A tank body (1); A supporting leg (2) is fixedly arranged at the bottom of the tank body (1), and a top cover (3) is rotationally connected to the top of the tank body (1); Characterized in that it further comprises a locking mechanism fixedly arranged at the top of the top cover (3) for quickly locking the top cover (3); An automatic filling assembly is fixedly arranged on the inner surface of the tank body (1) for automatically filling liquid nitrogen.

2. The stem cell storage tank for facilitating automatic filling of liquid nitrogen as claimed in claim 1 wherein, The locking mechanism comprises a locking bracket (4) fixedly arranged at the top of the top cover (3), an inner surface of the locking bracket (4) is fixedly connected with a sliding bracket (5), an inner surface of the sliding bracket (5) is slidingly connected with a rack (6), the rack (6) penetrates through the inner surface of the locking bracket (4) and extends to the outer surface of the locking bracket (4), the end of the rack (6) is fixedly connected with a sliding rod (7), the inner surface of the locking bracket (4) is fixedly connected with a mounting bracket (8), the outer surface of the sliding rod (7) is slidingly connected with the inner surface of the mounting bracket (8), the end of the rack (6) is fixedly connected with a return spring (9), the other end of the return spring (9) is fixedly connected with the outer surface of the mounting bracket (8).

3. The stem cell storage tank for facilitating automatic filling of liquid nitrogen as claimed in claim 2 wherein, The inner surface of the locking bracket (4) is rotationally provided with a driving assembly for driving the rack (6) to lock.

4. The stem cell storage tank for facilitating automatic filling of liquid nitrogen as claimed in claim 3 wherein, The driving assembly comprises a gear (10) rotationally arranged on the inner surface of the locking bracket (4), the gear (10) is engaged with the rack (6), the center shaft of the gear (10) is fixedly connected with a knob (11), the top end of the knob (11) penetrates through the inner surface of the locking bracket (4) and extends to the outer surface of the locking bracket (4), the outer surface of the tank body (1) is fixedly connected with a lock catch (12) matched with the rack (6).

5. The stem cell storage tank for facilitating automatic filling of liquid nitrogen as claimed in claim 1 wherein, The automatic filling assembly comprises a liquid nitrogen coating layer (13) fixedly arranged on the inner surface of the tank body (1), a vacuum layer (14) is arranged between the liquid nitrogen coating layer (13) and the tank body (1), an inner surface of the liquid nitrogen coating layer (13) is fixedly connected with a measuring bracket (15), the top of the measuring bracket (15) is fixedly connected with a low-temperature electromagnetic valve (16), the bottom of the low-temperature electromagnetic valve (16) is fixedly connected with a liquid level meter (17), the top of the measuring bracket (15) is fixedly connected with a liquid nitrogen valve (18), the input end and the output end of the liquid nitrogen valve (18) are both communicated with a conveying pipe (19).

6. The stem cell storage tank for easy automatic filling of liquid nitrogen as claimed in claim 1 wherein, The top of the top cover (3) is fixedly connected with a handle (20), the top of the top cover (3) is fixedly connected with a lifting handle (21), and the top of the top cover (3) is fixedly connected with a control panel (22).

7. The stem cell storage tank for easy automatic filling of liquid nitrogen as claimed in claim 2 wherein, The end of the rack (6) is provided with a pressing slope.

8. The stem cell storage tank for facilitating automatic filling of liquid nitrogen as claimed in claim 5 wherein, The outer surface of the liquid level meter (17) is slidingly connected with a floating ball.

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