A high-precision nitrogen purification and preparation device

Abstract

The utility model discloses a high accuracy type nitrogen gas purification and preparation equipment, the utility model relates to nitrogen gas preparation technical field, including mounting panel and filter jar, and the left and right sides of filter jar are provided with first conveying pipe and second conveying pipe respectively, and the outside of filter jar is provided with fixed subassembly, and fixed subassembly includes snap ring, card block, mounting seat, fixed bolster, rotating shaft and buffer pad, and snap ring is provided with two groups, and the snap ring is installed respectively in one end of first conveying pipe and second conveying pipe, the utility model's advantage lies in: when replacing filter jar, operating personnel only need to loosen the fixed screw on the fixed bolster, and the fixed bolster is opened through rotating shaft, and the card block on the both sides of filter jar is taken out from the snap ring through the cooperation of card block and snap ring on the both sides of filter jar, thereby the old filter jar is replaced quickly, and when installing the new filter jar, the reverse operation can be carried out, the time required for replacing filter jar is shortened, and the equipment maintenance efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen preparation technology, specifically a high-precision nitrogen purification and preparation device. Background Technology

[0002] Nitrogen, with the chemical formula N2, is a colorless and odorless gas under normal conditions. It is generally less dense than air and makes up 78.08% of the total volume of the atmosphere, making it one of the main components of air. Under standard atmospheric pressure, nitrogen becomes a colorless liquid when cooled to -195.8°C, and a snow-like solid when cooled to -209.8°C. Nitrogen is chemically inert and rarely reacts with other substances at room temperature, so it is often used to make preservatives.

[0003] The applicant discovered a Chinese patent, "A Nitrogen Preparation Device," with publication number "CN208791192 U." This patent primarily employs two adsorption towers used alternately. When the carbon molecular sieve in one adsorption tower becomes saturated with adsorbed oxygen molecules, it can no longer produce nitrogen. At this point, the other adsorption tower can be switched to continue operating while depressurizing the first adsorption tower. The alternating use of the two adsorption towers eliminates the need for downtime, improving work efficiency. Switching between the two adsorption towers is as simple as pulling up two handles to switch between the first and second pipes, as well as the third and fourth pipes, making operation convenient. However, the device lacks convenience in filter maintenance and replacement, reducing work efficiency during operation. Therefore, we propose a high-precision nitrogen purification and preparation device. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision nitrogen purification and preparation device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision nitrogen purification and preparation device, including a mounting plate and a filter tank, wherein a first conveying pipe and a second conveying pipe are respectively arranged on the left and right sides of the filter tank, and a fixing component is arranged on the outside of the filter tank;

[0006] The fixing assembly includes retaining rings, retaining blocks, mounting bases, fixing frames, rotating shafts, and buffer pads. Two sets of retaining rings are provided, each installed at one end of the first and second delivery pipes. The retaining blocks are installed on the outer sides of the air inlets on both sides of the filter canister, and each retaining block is compatible with a retaining ring. The mounting base is fixed to the front of the mounting plate. Two sets of fixing frames are provided, each installed on both sides of the front of the mounting base. The rotating shaft is installed below the fixing frames. The filter canister is located inside the fixing frames. Fixing screws are provided on the top of the fixing frames. Multiple sets of buffer pads are provided, and the buffer pads are evenly installed inside the fixing frames.

[0007] As a further embodiment of this utility model: the locking block is located inside the locking ring, and a sealing ring is provided between the locking ring and the locking block.

[0008] As a further embodiment of this utility model: a first adsorption tower is installed at the other end of the second conveying pipe, a third conveying pipe is installed on the surface of the first adsorption tower, a second adsorption tower is installed at the other end of the third conveying pipe, a fourth conveying pipe is installed on the side of the second adsorption tower, and a gas collecting bottle is installed at the other end of the fourth conveying pipe.

[0009] As a further embodiment of this utility model: a clamping assembly is provided on the outer side of the gas collecting bottle. The clamping assembly includes a placement seat, a fixing plate, a squeezing plate, a spring, a pull rod, and an anti-slip pad. The placement seat is located on the bottom surface of the gas collecting bottle. Two sets of fixing plates are provided, and the fixing plates are installed on both sides of the placement seat. Four sets of springs are provided, and the springs are symmetrically distributed on the inner sides of the two sets of fixing plates. One end of the spring is installed on the inner side of the fixing plate, and the other end of the spring is installed on the back side of the squeezing plate. The pull rod passes through the surface of the fixing plate, and one end of the pull rod is installed on the back side of the squeezing plate. A pull ring is installed on the other end of the pull rod. Multiple sets of anti-slip pads are provided, and the anti-slip pads are all installed on the inner side of the squeezing plate. The squeezing plate is located on the outer side of the gas collecting bottle.

[0010] As a further embodiment of this utility model: a reflux pipe is provided on the outside of the first adsorption tower and the second adsorption tower, and the two ends of the reflux pipe are respectively connected to the sides of the first adsorption tower and the second adsorption tower.

[0011] As a further embodiment of this invention, an air compressor is installed on the right side of the first delivery pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model by adopting the above technical solution are as follows:

[0013] 1. This utility model allows operators to easily replace the old filter canister by simply loosening the fixing screws on the fixing bracket and opening the bracket by rotating the shaft when the filter canister needs to be replaced. The locking blocks on both sides of the filter canister can be easily removed from the locking rings through the cooperation of the locking blocks and locking rings. When installing a new filter canister, the operation is reversed. This shortens the time required for filter canister replacement, improves the efficiency of equipment maintenance, and the sealing ring can effectively prevent gas leakage from the connection parts, ensuring the sealing of the filter canister during operation.

[0014] 2. This utility model is equipped with a clamping component, a support base for the gas collecting bottle, and a fixing plate that works with a spring to push the squeezing plate to firmly clamp the gas collecting bottle. Regardless of the size of the gas collecting bottle, it can be self-adaptively fixed by the elasticity of the spring, effectively resisting equipment vibration or external shaking, preventing the gas collecting bottle from shifting or tipping over, ensuring the safety of nitrogen collection and storage, avoiding risks such as gas leakage, and is convenient and flexible to operate.

[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model;

[0017] Figure 2 This is an exploded view of the location of the card block in an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the mounting base in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the clamping assembly in an embodiment of the present invention.

[0020] In the diagram: 1. Mounting plate; 2. Filter tank; 21. First delivery pipe; 22. Second delivery pipe; 3. Fixing assembly; 31. Snap ring; 32. Snap block; 33. Mounting base; 34. Fixing frame; 35. Rotating shaft; 36. Buffer pad; 37. Sealing ring; 4. First adsorption tower; 41. Third delivery pipe; 42. Second adsorption tower; 43. Fourth delivery pipe; 44. Gas collecting bottle; 5. Clamping assembly; 51. Placement seat; 52. Fixing plate; 53. Extrusion plate; 54. Spring; 55. Pull rod; 56. Anti-slip pad; 6. Return pipe; 7. Air compressor. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0022] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] Please see the appendix Figure 1 -Appendix Figure 4This utility model discloses a high-precision nitrogen purification and preparation device, including a mounting plate 1 and a filter tank 2. The left and right sides of the filter tank 2 are respectively connected to a first delivery pipe 21 and a second delivery pipe 22. A fixing component 3 is provided on the outside of the filter tank 2. Two sets of retaining rings 31 in the fixing component 3 are respectively installed at one end of the first delivery pipe 21 and the second delivery pipe 22. The outer sides of the air inlets on both sides of the filter tank 2 are respectively installed with retaining blocks 32. The mounting base 33 is fixed on the front of the mounting plate 1. Two sets of fixing brackets 34 are respectively installed on both sides of the front of the mounting base 33. The rotating shaft 35 is set below the fixing brackets 34, which can rotate and open the fixing brackets 34. The filter tank 2 is located inside the fixing brackets 34. After the fixing screws on the fixing brackets 34 are tightened, the filter tank 2 can be firmly fixed. At the same time, multiple sets of buffer pads 36 are evenly installed on the inner side of the fixing brackets 34, which can effectively buffer the vibration generated by the operation of the equipment, avoid damage to the filter tank 2 due to vibration, extend its service life, and lay a solid foundation for the stable operation of the equipment.

[0024] In Example 1, the card block 32 is located inside the card ring 31, and a sealing ring 37 is provided between the card ring 31 and the card block 32. The other end of the second conveying pipe 22 is equipped with a first adsorption tower 4. The surface of the first adsorption tower 4 is equipped with a third conveying pipe 41. The other end of the third conveying pipe 41 is equipped with a second adsorption tower 42. The side of the second adsorption tower 42 is equipped with a fourth conveying pipe 43. The other end of the fourth conveying pipe 43 is equipped with a gas collecting bottle 44.

[0025] Specifically, the locking block 32 is located inside the locking ring 31, and the sealing ring 37 between the two enhances the sealing of the connection, effectively preventing gas leakage and ensuring the stable operation of the entire nitrogen preparation process. The other end of the second delivery pipe 22 is securely connected to the first adsorption tower 4, allowing the gas to enter smoothly for initial adsorption and purification. The first adsorption tower 4 is connected to the second adsorption tower 42 through the third delivery pipe 41, further improving the purification level of the gas. The fully purified nitrogen is discharged from the side of the second adsorption tower 42 through the fourth delivery pipe 43 and finally accurately collected in the gas collecting bottle 44. All components work closely together to efficiently complete the nitrogen preparation and collection work.

[0026] In embodiment two, a clamping assembly 5 is provided on the outer side of the gas collecting bottle 44. The clamping assembly 5 includes a placement seat 51, a fixing plate 52, a pressing plate 53, a spring 54, a pull rod 55, and an anti-slip pad 56. The placement seat 51 is located on the bottom surface of the gas collecting bottle 44. Two sets of fixing plates 52 are provided and installed on both sides of the placement seat 51. Four sets of springs 54 are provided and symmetrically distributed on the inner side of the two sets of fixing plates 52. One end of the spring 54 is installed on the inner side of the fixing plate 52, and the other end of the spring 54 is installed on the pressing plate 53. On the back of 3, the pull rod 55 passes through the surface of the fixed plate 52, and one end of the pull rod 55 is installed on the back of the extrusion plate 53. The other end of the pull rod 55 is equipped with a pull ring. Multiple sets of anti-slip pads 56 are provided. All anti-slip pads 56 are installed on the inner side of the extrusion plate 53. The extrusion plate 53 is located on the outer side of the gas collecting bottle 44. The first adsorption tower 4 and the second adsorption tower 42 are provided with reflux pipes 6 on their outer sides. The two ends of the reflux pipes 6 are respectively connected to the sides of the first adsorption tower 4 and the second adsorption tower 42. An air compressor 7 is installed on the right side of the first conveying pipe 21.

[0027] Specifically, the clamping assembly 5 on the outside of the gas collecting cylinder 44 has a placement seat 51 supporting the bottom surface of the gas collecting cylinder 44, providing it with solid support. Two sets of fixing plates 52 are installed on both sides of the placement seat 51, and four sets of springs 54 are symmetrically distributed on the inner side of the fixing plates 52. One end of the spring 54 is connected to the fixing plate 52, and the other end is connected to the back of the extrusion plate 53. Relying on elasticity for automatic adjustment, regardless of the size of the gas collecting cylinder 44, the extrusion plate 53 can tightly fit against its outer side, effectively resisting equipment vibration or external shaking, preventing the gas collecting cylinder 44 from shifting or tipping over, and ensuring the safety of nitrogen collection and storage. The operator pulls the lever with the pull ring. With the extrusion plate 53 easily controlled by the 55, the operation is convenient and flexible. Multiple anti-slip pads 56 on the inner side of the extrusion plate 53 increase friction while preventing scratches on the surface of the gas collecting bottle 44. The reflux pipe 6 on the outside of the first adsorption tower 4 and the second adsorption tower 42 is connected to the sides of the two adsorption towers at both ends, which allows the gas to circulate between the two towers, increasing the contact time and area with the adsorbent and catalyst, and improving the nitrogen purification effect. The air compressor 7 installed on the right side of the first delivery pipe 21 compresses the air to provide power for subsequent filtration, adsorption and other processes, ensuring efficient operation of the equipment and stable production of high-purity nitrogen.

[0028] Working principle:

[0029] First, outside air enters the air compressor 7, which compresses the air to increase its pressure. The compressed air is then transported to the filter tank 2 via the first delivery pipe 21. Inside the filter tank 2, molecular sieve adsorbents preliminarily adsorb impurities such as moisture and carbon dioxide from the air. Next, the treated gas enters the first adsorption tower 4 via the second delivery pipe 22. The adsorbent filled in the first adsorption tower 4 further adsorbs and purifies the gas. Afterward, the gas enters the second adsorption tower 42 via the third delivery pipe 41 for another round of adsorption treatment. During this period, the reflux pipe 6 can return the gas in the second adsorption tower 42 to the first adsorption tower 4, increasing the contact area and reaction time between the gas and the adsorbent and catalyst, further improving the gas purity. Finally, the purified nitrogen enters the gas collecting bottle 44 via the fourth delivery pipe 43 for collection. The gas collecting bottle 44 is fixed to the placement seat 51 by the clamping assembly 5. This completes the entire workflow.

[0030] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0033] For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.

Claims

1. A high-precision nitrogen purification and preparation device, comprising a mounting plate (1) and a filter tank (2), wherein a first delivery pipe (21) and a second delivery pipe (22) are respectively provided on the left and right sides of the filter tank (2), characterized in that: A fixing component (3) is provided on the outside of the filter tank (2); The fixing component (3) includes a retaining ring (31), a retaining block (32), a mounting base (33), a fixing frame (34), a rotating shaft (35), and a buffer pad (36). Two sets of retaining rings (31) are provided, and the retaining rings (31) are respectively installed at one end of the first delivery pipe (21) and the second delivery pipe (22). The retaining blocks (32) are respectively installed on the outer sides of the air inlets on both sides of the filter tank (2). The retaining blocks (32) are adapted to the retaining rings (31). The mounting base... (33) is fixed on the front of the mounting plate (1). There are two sets of the fixing bracket (34), and the fixing bracket (34) is installed on both sides of the front of the mounting base (33). The rotating shaft (35) is installed below the fixing bracket (34). The filter tank (2) is located inside the fixing bracket (34). The fixing bracket (34) is provided with fixing screws on the top. There are multiple sets of buffer pads (36), and the buffer pads (36) are evenly installed inside the fixing bracket (34).

2. The high-precision nitrogen purification and preparation equipment according to claim 1, characterized in that: The locking block (32) is located inside the locking ring (31), and a sealing ring (37) is provided between the locking ring (31) and the locking block (32).

3. The high-precision nitrogen purification and preparation equipment according to claim 1, characterized in that: The other end of the second conveying pipe (22) is equipped with a first adsorption tower (4), the surface of the first adsorption tower (4) is equipped with a third conveying pipe (41), the other end of the third conveying pipe (41) is equipped with a second adsorption tower (42), the side of the second adsorption tower (42) is equipped with a fourth conveying pipe (43), and the other end of the fourth conveying pipe (43) is equipped with a gas collecting bottle (44).

4. The high-precision nitrogen purification and preparation equipment according to claim 3, characterized in that: A clamping assembly (5) is provided on the outside of the gas collecting bottle (44). The clamping assembly (5) includes a placement seat (51), a fixing plate (52), a pressing plate (53), a spring (54), a pull rod (55), and an anti-slip pad (56). The placement seat (51) is located on the bottom surface of the gas collecting bottle (44). Two sets of fixing plates (52) are provided, and the fixing plates (52) are installed on both sides of the placement seat (51). Four sets of springs (54) are provided, and the springs (54) are symmetrically distributed on the two sets of fixing plates (52). Inside, one end of the spring (54) is installed on the inside of the fixed plate (52), and the other end of the spring (54) is installed on the back of the extrusion plate (53). The pull rod (55) passes through the surface of the fixed plate (52), and one end of the pull rod (55) is installed on the back of the extrusion plate (53). The other end of the pull rod (55) is equipped with a pull ring. Multiple sets of anti-slip pads (56) are provided. All anti-slip pads (56) are installed on the inside of the extrusion plate (53). The extrusion plate (53) is located on the outside of the gas collecting bottle (44).

5. The high-precision nitrogen purification and preparation equipment according to claim 3, characterized in that: A reflux pipe (6) is provided on the outside of the first adsorption tower (4) and the second adsorption tower (42), and the two ends of the reflux pipe (6) are respectively connected to the sides of the first adsorption tower (4) and the second adsorption tower (42).

6. The high-precision nitrogen purification and preparation equipment according to claim 1, characterized in that: An air compressor (7) is installed on the right side of the first delivery pipe (21).

Images