Liquid nitrogen drawing device

Abstract

The utility model relates to the technical field of liquid nitrogen, in particular to a liquid nitrogen drawing device which comprises a base and a supporting plate, the supporting plate is arranged above the base, the top of the base is fixedly connected with a liquid nitrogen box, the top of the supporting plate is rotatably connected with a first lead screw, the outside of the first lead screw is in threaded connection with a sliding plate, and one end of the bottom of the sliding plate is fixedly connected with a polished rod. A rotating rod is rotationally connected to the bottom in the polished rod, a taking cup is fixedly connected to one end of the rotating rod and used in cooperation with the liquid nitrogen box, and a fixing plate is fixedly connected to one side of the exterior of the polished rod. The liquid nitrogen storage device has the advantages that liquid nitrogen can be safely transferred, frostbite or other safety accidents caused by improper treatment are reduced, meanwhile, the suffocation risk caused by improper release of the liquid nitrogen is avoided, the liquid nitrogen can be effectively sucked from the storage container, maximum utilization of the liquid nitrogen is guaranteed, and the safety of the liquid nitrogen storage device is improved. The waste caused by evaporation or improper operation is reduced, and compared with a traditional device, the operation quality and the use efficiency are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid nitrogen, in particular to a liquid nitrogen extraction device. Background Art

[0002] Liquid nitrogen has a wide range of applications in many fields due to its extremely low temperature (-196°C / -321°F) and some unique physical properties;

[0003] After searching, a Chinese patent discloses a liquid nitrogen extraction device (authorization announcement number CN213177663U) including a liquid nitrogen storage tank and a containing container; also including a gas guide device and a pressing airbag arranged at the mouth of the liquid nitrogen storage tank, a conduit, a connector and a control valve arranged at the mouth of the liquid nitrogen storage tank, and a box and a covering film arranged at the end of the conduit. Although the above patent technology can pressurize the liquid nitrogen into the liquid nitrogen storage tank to press the airbag, the air is pressed into the liquid nitrogen storage tank, the pressure in the liquid nitrogen storage tank increases to press the liquid nitrogen into the conduit, and the liquid nitrogen flows into the containing container through the conduit. In order to avoid the splashing liquid nitrogen from damaging the floor and personnel, a box and a covering film are set, and the splashing liquid nitrogen falls into the box, and the covering film covers the box to gasify the splashing liquid nitrogen;

[0004] However, in the actual application of this patented technology, the above-mentioned liquid nitrogen extraction device cannot be used to collect liquid nitrogen when in use. On the one hand, it will lead to the unsafe release of liquid nitrogen, thereby causing the risk of frostbite or suffocation. In addition, liquid nitrogen vapor spreads rapidly in a confined space and may displace oxygen in the air, causing the risk of suffocation. On the other hand, improper management and use of liquid nitrogen will lead to waste of resources and may also have a negative impact on the environment, causing material damage, and further affecting the environment. Utility Model Content

[0005] In view of the above problems existing in the prior art, the main purpose of the utility model is to provide a liquid nitrogen extraction device.

[0006] The technical solution of the utility model is as follows: a liquid nitrogen extraction device comprises a base and a support plate, the support plate is arranged above the base, the top of the base is fixedly connected to the liquid nitrogen box, the top of the support plate is rotatably connected to a first screw rod, the external thread of the first screw rod is connected to a sliding plate, one end of the bottom of the sliding plate is fixedly connected to a light rod, the bottom inside the light rod is rotatably connected to a rotating rod, one end of the rotating rod is fixedly connected to a cup, the cup is used in conjunction with the liquid nitrogen box, one side of the outside of the light rod is fixedly connected to a fixing plate, the top of the fixing plate is fixedly connected to a first motor, the output shaft of the first motor passes through the fixing plate and is fixedly connected to a first bevel gear, the end of the rotating rod away from the cup is fixedly connected to a second bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0007] Through the above technical solution, a support plate is arranged above the base to support the operation of the entire device, the liquid nitrogen box is used to store liquid nitrogen, a first screw is rotated on the top of the support plate, the first screw drives the sliding plate to move through a thread, the sliding plate is connected to the rotating rod through a smooth rod, the first motor is meshed with the second bevel gear on the rotating rod through the first bevel gear, and drives the cup to rotate, allowing the cup to rotate when drawing liquid nitrogen, thereby ensuring uniform drawing of liquid nitrogen and improving drawing efficiency and safety.

[0008] As a preferred embodiment, a sliding groove is opened on one side of the top of the base, the interior of the sliding groove is rotatably connected to a second screw rod, the external thread of the second screw rod is connected to a sliding block, the sliding block is slidably connected to the sliding groove, and a second motor is fixedly connected to the outer side of the base, and the output shaft of the second motor extends to the interior of the sliding groove and is fixedly connected to one end of the second screw rod.

[0009] Through the above technical solution, a sliding groove is provided on the base, and the second motor drives the second screw rod to realize the movement of the sliding block, thereby adjusting the horizontal position of the cup, thereby enhancing the flexibility and adaptability of the equipment, and being able to adjust the position of the cup according to actual needs.

[0010] As a preferred embodiment, the top of the sliding block is fixedly connected to an L-shaped plate, the bottom of the L-shaped plate is slidably connected to the top of the base, the top of the first screw rod is rotatably connected to the bottom of the L-shaped plate, the top of the L-shaped plate is fixedly connected to a third motor, and the output shaft of the third motor passes through the top of the remaining first screw rods of the L-shaped plate and is fixedly connected.

[0011] Through the above technical solution, the third motor is driven and connected to the first screw rod to realize the vertical lifting of the entire extraction mechanism. Through the lifting mechanism driven by the third motor, the operator can easily adjust the height of the cup to adapt to liquid nitrogen boxes of different depths. The operation is flexible and the labor intensity is low.

[0012] As a preferred implementation, flat arrows are fixedly connected to both sides of the polished rod, and the polished rod and the flat arrows are slidably connected to the support plate.

[0013] Through the above technical solution, the two sides of the light rod are fixed to the flat arrows and slide with the support plate, so that the light rod will not rotate when it slides up and down.

[0014] As a preferred embodiment, a T-shaped rod is fixedly connected to the top of the base and located on one side of the L-shaped plate, a limit plate is fixedly connected to the outer side of the L-shaped plate, and the limit plate is slidably connected to the T-shaped rod.

[0015] Through the above technical solution, the dynamic limit plate slides outside the T-shaped rod while the L-shaped plate slides, which can prevent the L-shaped plate from deviating from the sliding track.

[0016] As a preferred embodiment, one end of the top of the liquid nitrogen box is rotatably connected to a sealing cover, the top of the sealing cover is fixedly connected to a handle, and the bottom of the base is fixedly connected to four supporting legs.

[0017] Through the above technical solution, the design of the sealing cover ensures the sealed storage of liquid nitrogen and reduces the evaporation loss of liquid nitrogen. Moreover, through the design of the handle, the operator can easily open and close the liquid nitrogen box.

[0018] As a preferred implementation, the first motor, the second motor and the third motor are all electrically connected to an external control device.

[0019] Through the above technical solution, the accuracy, efficiency and safety of liquid nitrogen extraction are improved through carefully designed multiple adjustable and automated control mechanisms.

[0020] Compared with the prior art, the advantages and positive effects of the utility model are:

[0021] In the utility model, the liquid nitrogen extraction device can be used to collect the liquid nitrogen stored in the liquid nitrogen box when in use. On the one hand, the liquid nitrogen can be safely transferred to reduce frostbite or other safety accidents caused by improper handling, and at the same time, the risk of suffocation caused by improper release of liquid nitrogen is avoided. On the other hand, the liquid nitrogen can be effectively extracted from the storage container to ensure the maximum utilization of the liquid nitrogen and reduce the waste caused by evaporation or improper operation, which greatly improves the operation quality and use efficiency compared with the traditional device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a first-perspective stereogram of the present invention;

[0023] Figure 2 It is a second perspective stereogram of the utility model;

[0024] Figure 3 This is a third perspective stereogram of the present invention;

[0025] Figure 4 This is a schematic diagram of the L-shaped plate structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the base structure of the utility model;

[0027] Figure 6 for Figure 2 Enlarged view of point A in the middle.

[0028] Legend: 1. Base; 2. Liquid nitrogen box; 3. Support plate; 4. First screw rod; 5. Sliding plate; 6. Light rod; 7. Cup removal; 8. Fixed plate; 9. First motor; 10. First bevel gear; 11. Second bevel gear; 12. Sliding groove; 13. Second screw rod; 14. Sliding block; 15. Second motor; 16. L-shaped plate; 17. Third motor; 18. Rotating rod; 19. Flat arrow; 20. T-shaped rod; 21. Limiting plate; 22. Support leg; 23. Sealing cover; 24. Handle. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Example

[0032] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: a liquid nitrogen extraction device, including a base 1 and a support plate 3, the support plate 3 is arranged above the base 1, the top of the base 1 is fixedly connected to the liquid nitrogen box 2, the top of the support plate 3 is rotatably connected to the first screw rod 4, the external thread of the first screw rod 4 is connected to the sliding plate 5, one end of the bottom of the sliding plate 5 is fixedly connected to the light rod 6, the bottom of the inside of the light rod 6 is rotatably connected to the rotating rod 18, one end of the rotating rod 18 is fixedly connected to the cup 7, the cup 7 is used in conjunction with the liquid nitrogen box 2, one side of the outside of the light rod 6 is fixedly connected to the fixing plate 8, the top of the fixing plate 8 is fixedly connected to the first motor 9, the output shaft of the first motor 9 passes through the fixing plate 8 and is fixed A first bevel gear 10 is fixedly connected thereto, and an end of the rotating rod 18 away from the cup taking 7 is fixedly connected thereto with a second bevel gear 11, and the second bevel gear 11 is meshedly connected to the first bevel gear 10. A support plate 3 is arranged above the base 1 to support the operation of the entire device, and the liquid nitrogen tank 2 is used to store liquid nitrogen. A first screw rod 4 is rotated on the top of the support plate 3, and the first screw rod 4 drives the sliding plate 5 to move through a thread, and the sliding plate 5 is connected to the rotating rod 18 through a smooth rod 6. The first motor 9 meshes with the second bevel gear 11 on the rotating rod 18 through the first bevel gear 10 to drive the cup taking 7 to rotate, allowing the cup taking 7 to rotate when drawing liquid nitrogen, thereby ensuring uniform drawing of liquid nitrogen and improving drawing efficiency and safety.

[0033] Among them, a sliding groove 12 is opened on one side of the top of the base 1, and a second screw rod 13 is rotatably connected inside the sliding groove 12. The second screw rod 13 is externally threadedly connected to a sliding block 14. The sliding block 14 is slidably connected to the sliding groove 12. A second motor 15 is fixedly connected to the outside of the base 1. The output shaft of the second motor 15 extends to the inside of the sliding groove 12 and is fixedly connected to one end of the second screw rod 13. The sliding groove 12 is provided on the base 1 of the above-mentioned device, and the second screw rod 13 is driven by the second motor 15 to realize the movement of the sliding block 14, thereby adjusting the position of the cup 7 in the horizontal direction, thereby enhancing the flexibility and adaptability of the equipment, and being able to adjust the position of the cup 7 according to actual needs.

[0034] Among them, the top of the sliding block 14 is fixedly connected with an L-shaped plate 16, the bottom of the L-shaped plate 16 is slidably connected to the top of the base 1, the top of the first screw rod 4 is rotatably connected to the bottom of the L-shaped plate 16, and the top of the L-shaped plate 16 is fixedly connected with a third motor 17. The output shaft of the third motor 17 passes through the L-shaped plate 16 and is fixedly connected to the top of the remaining first screw rod 4. The above device is driven by the third motor 17 and connected to the first screw rod 4, thereby realizing the vertical lifting of the entire extraction mechanism. Through the lifting mechanism driven by the third motor 17, the operator can easily adjust the height of the cup 7 to adapt to liquid nitrogen boxes 2 of different depths. The operation is flexible and the labor intensity is low.

[0035] Among them, both sides of the light rod 6 are fixedly connected with flat arrows 19, and the light rod 6 and the flat arrows 19 are both slidably connected to the support plate 3. In the above device, the two sides of the light rod 6 are fixed to the flat arrows 19 and slide with the support plate 3, so that the light rod 6 will not rotate while sliding up and down.

[0036] Among them, a T-shaped rod 20 is fixedly connected to the top of the base 1 and on one side of the L-shaped plate 16, and a limit plate 21 is fixedly connected to the outer side of the L-shaped plate 16. The limit plate 21 is slidably connected to the T-shaped rod 20. When the L-shaped plate 16 slides, the movable limit plate 21 slides on the outside of the T-shaped rod 20, which can prevent the L-shaped plate 16 from deviating from the sliding track.

[0037] Among them, one end of the top of the liquid nitrogen box 2 is rotatably connected to a sealing cover 23, the top of the sealing cover 23 is fixedly connected to a handle 24, and the bottom of the base 1 is fixedly connected to four supporting legs 22. The design of the sealing cover 23 of the above device ensures the sealed storage of liquid nitrogen and reduces the evaporation loss of liquid nitrogen. Moreover, through the design of the handle 24, the operator can easily open and close the liquid nitrogen box 2.

[0038] Among them, the first motor 9, the second motor 15 and the third motor 17 are all electrically connected to the external control device. The above device improves the accuracy, efficiency and safety of liquid nitrogen extraction through a plurality of carefully designed adjustable and automated control mechanisms.

[0039] Working principle:

[0040] like Figure 1-Figure 6 As shown, when the above-mentioned liquid nitrogen extraction device is in use, first open the sealing cover 23 on the top of the liquid nitrogen box 2, then start the third motor 17 to drive the first screw rod 4 to rotate, and when the first screw rod 4 rotates, it drives the sliding plate 5 on the outside to move up and down, and at the same time drives the light rod 6 and the flat arrow 19 to slide inside the support plate 3, and the flat arrow 19 can limit the light rod 6 to prevent it from rotating, and drive the cup 7 to enter the interior of the liquid nitrogen box 2 to collect the liquid nitrogen, and then start the second motor 15 to drive the sliding plate 5 on the outside to move up and down. The block 14 moves laterally inside the sliding groove 12, driving the L-shaped plate 16 to move. When it moves to a certain position, the first motor 9 is started to drive the first bevel gear 10 to engage with the second bevel gear 11, so that the cup 7 is driven to flip, and the liquid nitrogen inside the cup 7 is poured out to complete the removal of the liquid nitrogen. The liquid nitrogen can be safely transferred, and frostbite or other safety accidents caused by improper handling can be reduced. At the same time, the risk of suffocation caused by improper release of liquid nitrogen is avoided, and the operation quality and use efficiency are greatly improved compared with traditional devices.

[0041] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A liquid nitrogen extraction device, comprising a base (1) and a support plate (3), characterized in that: The support plate (3) is arranged above the base (1), the top of the base (1) is fixedly connected to the liquid nitrogen box (2), the top of the support plate (3) is rotatably connected to the first screw rod (4), the external thread of the first screw rod (4) is connected to the sliding plate (5), one end of the bottom of the sliding plate (5) is fixedly connected to the light rod (6), the bottom of the inside of the light rod (6) is rotatably connected to the rotating rod (18), one end of the rotating rod (18) is fixedly connected to the cup (7), the cup (7) is used in conjunction with the liquid nitrogen box (2), one side of the outside of the light rod (6) is fixedly connected to the fixed plate (8), the top of the fixed plate (8) is fixedly connected to the first motor (9), the output shaft of the first motor (9) passes through the fixed plate (8) and is fixedly connected to the first bevel gear (10), the end of the rotating rod (18) away from the cup (7) is fixedly connected to the second bevel gear (11), and the second bevel gear (11) is meshed with the first bevel gear (10).

2. A liquid nitrogen extraction device according to claim 1, characterized in that: A sliding groove (12) is provided on one side of the top of the base (1), a second screw rod (13) is rotatably connected inside the sliding groove (12), a sliding block (14) is externally threadedly connected to the second screw rod (13), the sliding block (14) is slidably connected to the sliding groove (12), a second motor (15) is fixedly connected to the outside of the base (1), an output shaft of the second motor (15) extends into the inside of the sliding groove (12) and is fixedly connected to one end of the second screw rod (13).

3. A liquid nitrogen extraction device according to claim 2, characterized in that: The top of the sliding block (14) is fixedly connected to an L-shaped plate (16), the bottom of the L-shaped plate (16) is slidably connected to the top of the base (1), the top of the first screw rod (4) is rotatably connected to the bottom of the L-shaped plate (16), the top of the L-shaped plate (16) is fixedly connected to a third motor (17), and the output shaft of the third motor (17) passes through the L-shaped plate (16) and is fixedly connected to the top of the remaining first screw rods (4).

4. A liquid nitrogen extraction device according to claim 1, characterized in that: Flat arrows (19) are fixedly connected to both sides of the light rod (6), and the light rod (6) and the flat arrows (19) are slidably connected to the support plate (3).

5. A liquid nitrogen extraction device according to claim 3, characterized in that: A T-shaped rod (20) is fixedly connected to the top of the base (1) and located on one side of the L-shaped plate (16), and a limiting plate (21) is fixedly connected to the outer side of the L-shaped plate (16), and the limiting plate (21) is slidably connected to the T-shaped rod (20).

6. A liquid nitrogen extraction device according to claim 1, characterized in that: One end of the top of the liquid nitrogen box (2) is rotatably connected to a sealing cover (23), the top of the sealing cover (23) is fixedly connected to a handle (24), and the bottom of the base (1) is fixedly connected to four supporting legs (22).

7. A liquid nitrogen extraction device according to claim 3, characterized in that: The first motor (9), the second motor (15) and the third motor (17) are all electrically connected to an external control device.

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