Nitrogen supply device for liquid nitrogen machine

Abstract

The utility model provides a nitrogen supply device for a liquid nitrogen machine, which relates to the technical field of liquid nitrogen machines and comprises a liquid nitrogen tank, a delivery pipe is arranged on the top of the liquid nitrogen tank close to the left side in a matched manner, and a fixing plate is fixedly connected to the inner surface wall of the delivery pipe close to the middle. Two mounting blocks are symmetrically and fixedly connected to the positions, close to the middle, of the left surface of the fixing plate, a fixing rod is fixedly connected between the inner surface walls of the two mounting blocks, the outer surface of the fixing rod is sleeved with an extension spring, and a first straight handle hanging lug is fixedly connected to the top end of the extension spring; the bottom end of the extension spring is fixedly connected with a second straight handle hanging lug; according to the nitrogen supply device, through a built-in backflow prevention mechanism, the backflow problem of nitrogen in the conveying process can be effectively prevented, the continuity and stability of the production process are guaranteed, and meanwhile equipment and the production environment are protected against damage.

Description

Technical Field

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

[0002] Liquid nitrogen machines are commonly used equipment in industrial production and are widely used in gas-assisted injection molding, laser cutting, controlled atmosphere storage and other fields. In these applications, the high purity, stability and continuous supply of nitrogen are key factors in ensuring production efficiency and product quality.

[0003] Currently, during the nitrogen transportation process, nitrogen reflux may occur due to pressure fluctuations, pipeline rupture or improper operation, which not only affects the continuity and stability of the production process, but also damages the equipment and production environment. Therefore, to address the above problems, we propose a new type of nitrogen supply device for liquid nitrogen machine. Utility Model Content

[0004] The utility model mainly provides a nitrogen supply device for a liquid nitrogen machine which ensures the stability of a production process and protects the safety of equipment.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a nitrogen supply device for a liquid nitrogen machine, comprising a liquid nitrogen tank, a delivery pipe being provided at a position near the left side of the top of the liquid nitrogen tank, a fixed plate being fixedly connected to the inner wall of the delivery pipe near the middle position, two mounting blocks being symmetrically fixedly connected to the left surface of the fixed plate near the middle position, a fixing rod being fixedly connected between the inner walls of the two mounting blocks, a tension spring being sleeved on the outer surface of the fixing rod, a first straight handle hanging ear being fixedly connected to the top end of the tension spring, and a second straight handle hanging ear being fixedly connected to the bottom end of the tension spring.

[0006] Preferably, two rotating seats are fixedly connected to the left surface of the fixed plate near the edges on both sides, and the outer surfaces of the two rotating seats are rotatably connected to rotating blocks, which can rotate freely around the rotating seats. This design makes the entire structure highly flexible and adaptable when facing changes in the direction of nitrogen flow. Whether it is forward nitrogen delivery or prevention of nitrogen backflow, the rotating block can quickly respond and adjust the position of the rotating plate on it to ensure the smoothness and safety of nitrogen flow.

[0007] Preferably, the outer surface of one of the rotating blocks is fixedly connected to a first rotating plate, and the outer surface of the other rotating block is fixedly connected to a second rotating plate. By providing two independent rotating plates (the first rotating plate and the second rotating plate), double protection is provided during the nitrogen transportation process. When the nitrogen flows normally, the two rotating plates work together to ensure smooth passage of nitrogen. When nitrogen backflow occurs, the two rotating plates are respectively impacted and rotate around the rotating seat respectively, jointly blocking the backflow path, thereby enhancing the effect of preventing backflow.

[0008] Preferably, the outer surface of the first straight-handle hanging ear is in contact with the left surface of the first rotating plate, and the outer surface of the second straight-handle hanging ear is in contact with the left surface of the second rotating plate. The outer surfaces of the first rotating plate and the second rotating plate are both in close contact with the inner surface wall of the conveying pipe. When nitrogen flows forward or flows back in the reverse direction, the straight-handle hanging ear can directly transmit force to the rotating plate, causing it to rotate around the rotating seat. Since the straight-handle hanging ear is in close contact with the surface of the rotating plate, the energy loss in the transmission process is reduced, thereby improving the transmission efficiency, which makes the system respond more quickly and accurately to changes in nitrogen flow.

[0009] Preferably, the top and bottom ends of the two rotating seats are fixedly connected to limit blocks, and the left surface of the delivery pipe is threadedly connected to a sealing sleeve. The limit blocks serve as limiting devices for the rotating blocks, which help to reduce loosening or deviation caused by vibration or impact, thereby maintaining stable operation of the system. The use of the sealing sleeve increases the sealing performance and improves the safety of the entire nitrogen delivery system.

[0010] Preferably, a handle is fixedly connected to a position near the top of the right surface of the liquid nitrogen tank, and a mounting bracket is fixedly connected to a position near the bottom of the right surface of the liquid nitrogen tank. The design of the handle makes it more convenient to move or transport the liquid nitrogen tank, and the mounting bracket is for facilitating the installation of moving wheels.

[0011] Preferably, two movable wheels are fixedly connected to the right surface of the mounting frame, and the movable wheels enable the entire liquid nitrogen tank to be easily moved on the ground or other planes when needed, significantly reducing the physical strength and time cost of manual handling and increasing the flexibility of the device.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] 1. In the present invention, the nitrogen supply device can effectively prevent the backflow problem of nitrogen during the transportation process through the built-in backflow prevention mechanism, ensure the continuity and stability of the production process, and protect the equipment and production environment from damage.

[0014] 2. In the present invention, the design of the handle and the movable wheels makes it more convenient to move or transport the liquid nitrogen tank, significantly reduces the physical strength and time cost of manual handling, and increases the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a three-dimensional diagram of a nitrogen supply device for a liquid nitrogen machine;

[0016] Figure 2 The utility model proposes an expanded diagram of a nitrogen supply device for a liquid nitrogen machine;

[0017] Figure 3 This is a partial structural perspective diagram of a nitrogen supply device for a liquid nitrogen machine proposed in the utility model;

[0018] Figure 4 This is a perspective view of another part of the structure of a nitrogen supply device for a liquid nitrogen machine proposed in the utility model;

[0019] Figure 5 The utility model provides a schematic diagram of a nitrogen supply device for a liquid nitrogen machine.

[0020] Legend: 1. Liquid nitrogen tank; 11. Handle; 2. Delivery pipe; 21. Sealing sleeve; 3. Mounting frame; 31. Moving wheel; 4. Fixed plate; 41. Mounting block; 42. Fixed rod; 43. Tension spring; 44. First straight handle hanging ear; 5. Rotating seat; 51. Rotating block; 52. First rotating plate; 53. Limiting block; 6. Second rotating plate; 61. Second straight handle hanging ear. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] See also Figure 1-Figure 5 The utility model provides a technical solution: a nitrogen supply device for a liquid nitrogen machine, comprising a liquid nitrogen tank 1, a delivery pipe 2 is matchedly provided at the top near the left side of the liquid nitrogen tank 1, a fixing plate 4 is fixedly connected to the inner wall of the delivery pipe 2 near the middle position, two mounting blocks 41 are symmetrically fixedly connected to the left surface of the fixing plate 4 near the middle position, a fixing rod 42 is fixedly connected between the inner walls of the two mounting blocks 41, a tension spring 43 is sleeved on the outer surface of the fixing rod 42, a first straight handle hanging ear 44 is fixedly connected to the top end of the tension spring 43, and a second straight handle hanging ear 61 is fixedly connected to the bottom end of the tension spring 43.

[0024] like Figure 3-Figure 5 As shown, two rotating seats 5 are fixedly connected to the left surface of the fixed plate 4 near the edges on both sides, and the outer surfaces of the two rotating seats 5 are rotatably connected to rotating blocks 51. The rotating blocks 51 can rotate freely around the rotating seats 5. This design makes the entire structure highly flexible and adaptable when facing changes in the direction of nitrogen flow. Whether it is forward nitrogen delivery or prevention of nitrogen backflow, the rotating block 51 can quickly respond and adjust the position of the rotating plate on it to ensure the smoothness and safety of nitrogen flow.

[0025] like Figure 3-Figure 5 As shown, the outer surface of one of the rotating blocks 51 is fixedly connected to the first rotating plate 52, and the outer surface of the other rotating block 51 is fixedly connected to the second rotating plate 6. By providing two independent first rotating plates 52 and second rotating plates 6, double protection is provided during the nitrogen transportation process. When the nitrogen flows normally, the two rotating plates work together to ensure smooth passage of nitrogen. When nitrogen backflow occurs, the two rotating plates are respectively impacted and rotate around the rotating seat 5 to jointly block the backflow path, thereby enhancing the effect of preventing backflow.

[0026] like Figure 3-Figure 5 As shown, the outer surface of the first straight-handle hanging ear 44 is in contact with the left surface of the first rotating plate 52, and the outer surface of the second straight-handle hanging ear 61 is in contact with the left surface of the second rotating plate 6. The outer surfaces of the first rotating plate 52 and the second rotating plate 6 are both in close contact with the inner wall of the conveying pipe 2. When nitrogen flows forward or flows back in the reverse direction, the straight-handle hanging ear can directly transmit force to the rotating plate, causing it to rotate around the rotating seat 5. Since the straight-handle hanging ear is in close contact with the surface of the rotating plate, the energy loss in the transmission process is reduced, thereby improving the transmission efficiency, which makes the system respond more quickly and accurately to changes in nitrogen flow.

[0027] like Figure 1-Figure 5 As shown, the top and bottom ends of the two rotating seats 5 are fixedly connected to the limit blocks 53, and the left surface of the delivery pipe 2 is threadedly connected to the sealing sleeve 21. The limit blocks 53 serve as a limiting device for the rotating block 51, which helps to reduce loosening or deviation caused by vibration or impact, thereby maintaining stable operation of the system. The use of the sealing sleeve 21 is to increase the sealing performance and improve the safety of the entire nitrogen delivery system.

[0028] like Figure 1 and Figure 2 As shown, a handle 11 is fixedly connected to a position near the top of the right surface of the liquid nitrogen tank 1, and a mounting bracket 3 is fixedly connected to a position near the bottom of the right surface of the liquid nitrogen tank 1. The design of the handle 11 makes the liquid nitrogen tank 1 more convenient when it needs to be moved or transported, and the mounting bracket 3 is for facilitating the installation of the moving wheel 31.

[0029] like Figure 1 and Figure 2As shown, two moving wheels 31 are fixedly connected to the right surface of the mounting frame 3. The moving wheels 31 allow the entire liquid nitrogen tank 1 to be easily moved on the ground or other planes when needed, significantly reducing the physical strength and time cost of manual handling and increasing the flexibility of the device.

[0030] The method of use and working principle of this device: liquid nitrogen is safely stored in a liquid nitrogen tank 1, and the tank body maintains an extremely low temperature environment to ensure the stable storage of liquid nitrogen. When the equipment needs nitrogen supply, the liquid nitrogen in the liquid nitrogen tank 1 will undergo a series of conversion processes and be transported to the target location through the delivery pipe 2. In the initial stage of nitrogen delivery, the nitrogen will first encounter the first rotating plate 52 and the second rotating plate 6 located in the delivery pipe 2. The design of these two rotating plates is ingenious. They are not only connected to the first straight handle hanging ear 44 and the second straight handle hanging ear 61 through the tension spring 43, but also each rotates freely around the two rotating seats 5 fixed on the fixed plate 4. During the normal nitrogen delivery process, the positive flow of nitrogen will impact the first rotating plate 52 and the second rotating plate 6, causing both rotating plates to rotate, thereby opening the nitrogen delivery channel and ensuring the stable delivery of nitrogen. When there is a tendency for nitrogen to reflux in the delivery pipe 2 due to pressure fluctuations, pipeline rupture or improper operation, the nitrogen will impact the first rotating plate 52 and On the second rotating plate 6, the rotating plate will feel the impact force of the backflow nitrogen. This impact force will cause the two rotating plates to rotate back around the rotating seat 5, thereby stretching the tension spring 43. As the tension spring 43 stretches, the tension spring 43 will release the stored elastic force, pushing the rotating plate back to the stable state of the initial position. At this time, the rotating plate will gradually close the nitrogen backflow path, preventing the nitrogen from passing through. At this time, the nitrogen backflow path is completely blocked, ensuring that the nitrogen cannot flow back into the liquid nitrogen tank 1, which not only effectively prevents nitrogen backflow, but also avoids problems such as pressure increase, equipment damage or production interruption caused by backflow. The nitrogen supply device can effectively prevent the backflow problem of nitrogen during transportation through the built-in backflow prevention mechanism, ensure the continuity and stability of the production process, and protect the equipment and production environment from damage. In addition, the design of the handle 11 and the movable wheel 31 makes the liquid nitrogen tank 1 more convenient when it needs to be moved or transported, significantly reducing the physical strength and time cost of manual handling and increasing the flexibility of the device.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A nitrogen supply device for a liquid nitrogen machine, comprising a liquid nitrogen tank (1), characterized in that: A delivery pipe (2) is provided at a position near the left side of the top of the liquid nitrogen tank (1); a fixing plate (4) is fixedly connected to the inner surface wall of the delivery pipe (2) near the middle position; two mounting blocks (41) are symmetrically fixedly connected to the left surface of the fixing plate (4) near the middle position; a fixing rod (42) is fixedly connected between the inner surface walls of the two mounting blocks (41); a tension spring (43) is sleeved on the outer surface of the fixing rod (42); a first straight handle hanging ear (44) is fixedly connected to the top end of the tension spring (43); and a second straight handle hanging ear (61) is fixedly connected to the bottom end of the tension spring (43).

2. A nitrogen supply device for a liquid nitrogen machine according to claim 1, characterized in that: Two rotating seats (5) are fixedly connected to the left surface of the fixed plate (4) near the edges on both sides, and the outer surfaces of the two rotating seats (5) are both rotatably connected to rotating blocks (51).

3. A nitrogen supply device for a liquid nitrogen machine according to claim 2, characterized in that: The outer surface of one of the rotating blocks (51) is fixedly connected to a first rotating plate (52), and the outer surface of the other rotating block (51) is fixedly connected to a second rotating plate (6).

4. A nitrogen supply device for a liquid nitrogen machine according to claim 3, characterized in that: The outer surface of the first straight handle hanging ear (44) is in contact with the left surface of the first rotating plate (52), and the outer surface of the second straight handle hanging ear (61) is in contact with the left surface of the second rotating plate (6). The outer surfaces of the first rotating plate (52) and the second rotating plate (6) are both in close contact with the inner surface wall of the conveying pipe (2).

5. A nitrogen supply device for a liquid nitrogen machine according to claim 4, characterized in that: The top and bottom ends of the two rotating seats (5) are fixedly connected to the limiting blocks (53), and the left surface of the delivery pipe (2) is threadedly connected to a sealing sleeve (21).

6. A nitrogen supply device for a liquid nitrogen machine according to claim 5, characterized in that: A handle (11) is fixedly connected to a position near the top of the right surface of the liquid nitrogen tank (1), and a mounting frame (3) is fixedly connected to a position near the bottom of the right surface of the liquid nitrogen tank (1).

7. A nitrogen supply device for a liquid nitrogen machine according to claim 6, characterized in that: Two moving wheels (31) are fixedly connected to the right surface of the mounting frame (3).

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