A liquid nitrogen injection assembly

Abstract

The utility model discloses a liquid nitrogen injection assembly, including the storage tank, the storage tank fixedly connected with the feed inlet, the feed inlet is connected with the sealing cover, and the inside insertion of sealing cover has injection pipe, and one end fixedly connected with the positioning cylinder of injection pipe, through setting the cooperation and use of storage tank, feed inlet, sealing cover, injection pipe, air inlet pipe, the cooperation and use of the blocking assembly of type frame and plugging assembly, the close cooperation of sealing cover and feed inlet, and the setting of blocking assembly, effectively prevent the leakage of liquid nitrogen in the storage and injection process, reduced the security risk of liquid nitrogen leakage and caused, such as personnel frostbite, equipment freeze damage and environmental pollution etc, and the blocking assembly and sealing cover etc.

Description

Technical Field

[0001] This utility model relates to the field of medical liquid nitrogen injection technology, specifically a liquid nitrogen injection component. Background Technology

[0002] Liquid nitrogen, which is the liquid form of nitrogen gas at extremely low temperatures, is inert, colorless, odorless, non-corrosive, and non-flammable. These properties give it unique value in many fields. Since the 1980s, with the rapid development of global science and technology and industry, liquid nitrogen technology has gradually gained attention and been widely used. In hospitals, liquid nitrogen is widely used as a refrigerant for the rapid freezing of biological tissues.

[0003] Liquid nitrogen storage tanks, as a crucial component of liquid nitrogen injection systems, bear the heavy responsibility of storing liquid nitrogen. However, traditional liquid nitrogen tank designs often neglect the sealing of openings, lacking sealing mechanisms to effectively prevent leakage during storage and injection. Liquid nitrogen leakage not only results in significant resource waste but also poses potential safety threats to the surrounding environment and personnel, such as causing equipment freezing damage and frostbite. Therefore, we need to propose a new liquid nitrogen injection system. Utility Model Content

[0004] The purpose of this invention is to provide a liquid nitrogen injection assembly, aiming to solve the problem that existing liquid nitrogen storage tank designs often neglect the sealing problem at the opening, lacking a sealing mechanism to effectively prevent leakage of liquid nitrogen during storage and injection. Liquid nitrogen leakage not only causes a huge waste of resources but also poses a potential safety threat to the surrounding environment and personnel, such as causing equipment freezing damage and frostbite.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A liquid nitrogen injection assembly includes a storage tank with a feed inlet fixedly connected to it. The feed inlet is connected to a sealing cap, and an injection tube is inserted into the inside of the sealing cap. One end of the injection tube is fixedly connected to a positioning cylinder, and a rubber tube is sleeved on one end of the injection tube. Multiple sets of clamping components for positioning the rubber tube are symmetrically arranged on the outer wall of the positioning cylinder. Multiple sets of air inlet pipes are inserted into the sealing cap. A C-shaped frame is fixedly connected to the sealing cap and the top of the C-shaped frame is provided with multiple sets of sealing components for sealing the multiple sets of air inlet pipes, and the multiple sets of sealing components are respectively located above the multiple sets of air inlet pipes.

[0007] Preferably, the sealing assembly includes a sliding rod, which is slidably inserted into the top of the C-shaped frame, with a sealing block fixedly connected to the bottom end of the sliding rod through the C-shaped frame, and a pressing plate fixedly connected to the top end of the sliding rod.

[0008] Preferably, the sealing block is located directly above the intake pipe, and the bottom of the sealing block is inserted into the inside of the intake pipe.

[0009] Preferably, it also includes a return spring, the top end of which is fixedly connected to the bottom of the pressing plate, the bottom end of which is fixedly connected to the C-shaped frame, and the return spring is movably sleeved on the outer wall of the slide rod.

[0010] Preferably, the clamping assembly includes a threaded rod, which is threadedly connected to the outer wall of the positioning cylinder, and one end of the threaded rod passes through the positioning cylinder and is rotatably connected to a clamping block, while the other end of the threaded rod is fixedly connected to an adjusting knob.

[0011] Preferably, all of the clamping blocks are arranged in an arc shape, and the opposite side wall of the clamping blocks abuts against the outer wall of the tubing.

[0012] Preferably, multiple sets of guide rods are fixedly connected to the outer wall of the clamping block, and one end of each set of guide rods passes through the positioning cylinder and is fixedly connected to an anti-detachment part.

[0013] Preferably, a leak-proof block is fixedly connected to the bottom of the sealing cap, and the leak-proof block is inserted into the inside of the feed inlet.

[0014] Preferably, the inner wall of the sealing cap is provided with an internal thread, and the outer wall of the feed inlet is provided with an external thread that matches the internal thread. The sealing cap is threadedly connected to the top of the feed inlet.

[0015] Preferably, it also includes a grip handle, which is fixedly connected to the outer wall of the tank.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention, through the coordinated use of a storage tank, inlet, sealing cap, injection tube, air inlet tube, U-shaped frame, and sealing assembly, effectively prevents leakage of liquid nitrogen during storage and injection. The tight fit between the sealing cap and the inlet, along with the sealing assembly, reduces safety risks such as frostbite, equipment damage, and environmental pollution. The sealing assembly and sealing cap are easy to disassemble and install, facilitating regular inspection and maintenance of the liquid nitrogen injection system, extending the equipment's lifespan. The design is simple to operate, reducing operational difficulty and complexity, allowing workers to easily perform liquid nitrogen storage, injection, and sealing operations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the axial side structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the sealing cap and sealing assembly of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the injection tube, tubing, and clamping assembly of this utility model.

[0022] In the diagram: 1. Storage tank; 2. Inlet; 3. Sealing cap; 4. Injection tube; 5. Positioning cylinder; 6. Rubber hose; 7. Clamping assembly; 701. Threaded rod; 702. Clamping block; 703. Adjusting knob; 8. Air inlet pipe; 9. C-shaped frame; 10. Sealing assembly; 1001. Slide rod; 1002. Sealing block; 1003. Pressing plate; 1004. Return spring; 11. Guide rod; 12. Leak-proof block; 13. Internal thread; 14. External thread; 15. Handle. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a technical solution:

[0025] A liquid nitrogen injection assembly includes a storage tank 1 for storing liquid nitrogen. The bottom diameter of the storage tank 1 is 8-15cm and its height is 20-40cm. It can be set to multiple sizes to facilitate replacement as needed.

[0026] The storage tank 1 is fixedly connected to the inlet 2, which is connected to the sealing cap 3. An injection tube 4 is inserted inside the sealing cap 3. One end of the injection tube 4 is fixedly connected to the positioning cylinder 5, and a rubber tube 6 is sleeved on the other end of the injection tube 4. Multiple clamping components 7 for positioning the rubber tube 6 are symmetrically arranged on the outer wall of the positioning cylinder 5. Multiple air inlet pipes 8 are inserted into the sealing cap 3. The sealing cap 3 is fixedly connected to the multiple air inlet pipes 8 by a C-shaped frame 9. Multiple sealing components 10 for sealing the multiple air inlet pipes 8 are arranged on the top of the C-shaped frame 9. The multiple sealing components 10 are located above the multiple air inlet pipes 8. By setting the sealing components 10, the liquid nitrogen injection level can be adjusted. In practical applications, for young children, the mist volume requirement is not large, and the injection spray volume can be reduced by adjusting the level. For adult patients, the injection spray volume can be increased according to the actual needs, thereby improving the convenience and flexibility of the device.

[0027] By using the storage tank 1, inlet 2, sealing cap 3, injection tube 4, air inlet pipe 8, C-shaped frame 9, and sealing assembly 10 in conjunction, the tight fit between the sealing cap 3 and the inlet 2, as well as the sealing assembly 10, effectively prevents leakage of liquid nitrogen during storage and injection, reducing safety risks caused by liquid nitrogen leakage, such as frostbite to personnel, equipment damage from freezing, and environmental pollution. The sealing assembly 10 and sealing cap 3 are easy to disassemble and install, facilitating regular inspection and maintenance of the liquid nitrogen injection assembly, extending the service life of the equipment, and simplifying operation, reducing the difficulty and complexity of operation. Workers can easily complete operations such as liquid nitrogen storage, injection, and sealing.

[0028] In this embodiment, as Figure 3 As shown, the sealing assembly 10 includes a slide rod 1001, which is slidably inserted into the top of the U-shaped frame 9. The bottom end of the slide rod 1001 passes through the U-shaped frame 9 and is fixedly connected to a sealing block 1002. The top end of the slide rod 1001 is fixedly connected to a pressing plate 1003. When the operator presses the pressing plate 1003 downward, the slide rod 1001 can be moved downward, thereby moving the sealing block 1002 downward.

[0029] In a further preferred embodiment, such as Figure 3 As shown, the blocking block 1002 is located directly above the air inlet pipe 8, and the bottom of the blocking block 1002 is inserted into the inside of the air inlet pipe 8. When the slide rod 1001 moves downward, the blocking block 1002 can be inserted into the air inlet pipe 8 at the corresponding position, thereby controlling the air intake and thus controlling the injection spray volume of liquid nitrogen. At this time, the position of the blocking block 1002 relative to the air inlet pipe 8 is achieved by moving the slide rod 1001. The blocking block 1002 matches the corresponding gear at different positions, so that the injection spray volume can be adjusted based on different gears. In practical applications, for young children, the spray volume requirement is not large, and the injection spray volume can be reduced by adjusting the gear. For adult patients, the injection spray volume can be increased according to actual needs, thereby improving the convenience and flexibility of the device.

[0030] In a further preferred embodiment, such as Figure 3 As shown, it also includes a return spring 1004. The top end of the return spring 1004 is fixedly connected to the bottom of the pressing plate 1003, and the bottom end of the return spring 1004 is fixedly connected to the U-shaped frame 9. The return spring 1004 is movably sleeved on the outer wall of the slide rod 1001. When the pressing plate 1003 moves downward, the return spring 1004 is in a compressed state. When the operator does not press the pressing plate 1003, the rebound force of the return spring 1004 can drive the slide rod 1001 to move upward, thereby driving the sealing block 1002 to move upward.

[0031] It is worth noting that, such as Figure 4 As shown, the clamping assembly 7 includes a threaded rod 701, which is threadedly connected to the outer wall of the positioning cylinder 5. One end of the threaded rod 701 passes through the positioning cylinder 5 and is rotatably connected to a clamping block 702. The other end of the threaded rod 701 is fixedly connected to an adjustment knob 703. By rotating the adjustment knob 703, the threaded rod 701 can be rotated, which in turn can move the clamping block 702. This allows the tubing 6 to be clamped and positioned by the clamping block 702, preventing the tubing 6 from falling off the outer wall of the injection tube 4 during use. This further improves the stability of the liquid nitrogen injection assembly.

[0032] In a further preferred embodiment, such as Figure 4 As shown, multiple sets of clamping blocks 702 are all arc-shaped, and the opposite side wall of the multiple sets of clamping blocks 702 abuts against the outer wall of the tubing 6. By setting the clamping blocks 702 to arc shape, they can better fit the outer wall of the injection tube 4, thereby more stably clamping and positioning the tubing 6 sleeved on the outer wall of the injection tube 4.

[0033] In a further preferred embodiment, such as Figure 4 As shown, multiple sets of guide rods 11 are fixedly connected to the outer wall of the clamping block 702, and one end of each set of guide rods 11 passes through the positioning cylinder 5 and is fixedly connected to an anti-detachment part. By setting the guide rods 11, the clamping block 702 is limited, making its movement process more stable. By setting the anti-detachment part, the guide rods 11 are limited, preventing them from falling off during use.

[0034] In this embodiment, as Figure 2 As shown, a leak-proof block 12 is fixedly connected to the bottom of the sealing cover 3. The leak-proof block 12 is inserted into the inside of the feed inlet 2. By setting the leak-proof block 12, the sealing performance of the sealing cover 3 to the feed inlet 2 is increased, preventing liquid nitrogen from leaking during use.

[0035] In a further preferred embodiment, such as Figure 2 As shown, the inner wall of the sealing cap 3 is provided with an internal thread 13, and the outer wall of the feed inlet 2 is provided with an external thread 14 that matches the internal thread 13. The sealing cap 3 is threaded to the top of the feed inlet 2. By providing the internal thread 13 and the external thread 14, the sealing cap 3 can be easily disassembled, and the injection tube 4, clamping assembly 7 and sealing assembly 10 on the top of the sealing cap 3 can be easily disassembled and assembled.

[0036] In addition, such as Figure 1 As shown, it also includes a handle 15, which is fixedly connected to the outer wall of the storage tank 1. By setting the handle 15, it is easy for staff to hold the liquid nitrogen injection assembly, which helps to further increase the convenience of the liquid nitrogen injection assembly.

[0037] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A liquid nitrogen injection assembly, comprising a storage tank (1), characterized in that: The storage tank (1) is fixedly connected to a feed inlet (2), and the feed inlet (2) is connected to a sealing cap (3); An injection tube (4) is inserted inside the sealing cap (3). One end of the injection tube (4) is fixedly connected to a positioning cylinder (5), and a rubber tube (6) is sleeved on one end of the injection tube (4). Multiple sets of clamping components (7) for positioning the rubber tube (6) are symmetrically arranged on the outer wall of the positioning cylinder (5). The sealing cover (3) is inserted into multiple sets of air inlet pipes (8). The sealing cover (3) is fixedly connected to the multiple sets of air inlet pipes (8) with a C-shaped frame (9). The top of the C-shaped frame (9) is provided with multiple sets of sealing components (10) for sealing the multiple sets of air inlet pipes (8).

2. The liquid nitrogen injection assembly according to claim 1, characterized in that: The sealing assembly (10) includes a slide rod (1001), which is slidably inserted into the top of the shaped frame (9). The bottom end of the slide rod (1001) passes through the shaped frame (9) and is fixedly connected to a sealing block (1002). The top end of the slide rod (1001) is fixedly connected to a pressing plate (1003).

3. A liquid nitrogen injection assembly according to claim 2, characterized in that: The sealing block (1002) is located directly above the intake pipe (8), and the bottom of the sealing block (1002) is inserted into the inside of the intake pipe (8).

4. A liquid nitrogen injection assembly according to claim 3, characterized in that: It also includes a return spring (1004), the top end of which is fixedly connected to the bottom of the pressing plate (1003), the bottom end of which is fixedly connected to the shaped frame (9), and the return spring (1004) is movably sleeved on the outer wall of the slide rod (1001).

5. A liquid nitrogen injection assembly according to claim 1, characterized in that: The clamping assembly (7) includes a threaded rod (701), which is threaded to the outer wall of the positioning cylinder (5). One end of the threaded rod (701) passes through the positioning cylinder (5) and is rotatably connected to a clamping block (702). The other end of the threaded rod (701) is fixedly connected to an adjusting knob (703).

6. A liquid nitrogen injection assembly according to claim 5, characterized in that: The multiple sets of clamping blocks (702) are all arranged in an arc shape, and the opposite side wall of the multiple sets of clamping blocks (702) abuts against the outer wall of the rubber tube (6).

7. A liquid nitrogen injection assembly according to claim 6, characterized in that: Multiple sets of guide rods (11) are fixedly connected to the outer wall of the clamping block (702), and one end of each set of guide rods (11) passes through the positioning cylinder (5) and is fixedly connected to an anti-detachment part.

8. A liquid nitrogen injection assembly according to claim 1, characterized in that: The bottom of the sealing cap (3) is fixedly connected to a leak-proof block (12), which is inserted into the inside of the feed inlet (2).

9. A liquid nitrogen injection assembly according to claim 1, characterized in that: The inner wall of the sealing cap (3) is provided with an internal thread (13), and the outer wall of the feed inlet (2) is provided with an external thread (14) that matches the internal thread (13). The sealing cap (3) is threadedly connected to the top of the feed inlet (2).

10. A liquid nitrogen injection assembly according to claim 1, characterized in that: It also includes a grip (15), which is fixedly connected to the outer wall of the storage tank (1).

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