A purification and water removal device for nitrogen production

Abstract

The utility model discloses a kind of purification water removal devices for nitrogen production, it is related to nitrogen production technical field, including purification water removal tank and adsorption tank, the upper portion of the purification water removal tank is equipped with adsorption tank, the upper portion of the purification water removal tank is equipped with inlet pipe, and the inside of purification water removal tank is equipped with filter screen, the inside of the purification water removal tank is equipped with splitter plate by fixed shaft;The inside of the adsorption tank is equipped with first baffle and second baffle, and the upper surface of first baffle and second baffle is equipped with first adsorption layer;The inside of the purification water removal tank is equipped with second adsorption layer, and the right side of purification water removal tank is equipped with condenser, the right side of the adsorption tank is equipped with dryer.The purification water removal device for nitrogen production, splitter plate swings under the drive of servo motor, nitrogen is relatively evenly dispersed to filter screen, avoid airflow concentration to cause uneven filtration, improve filtration efficiency and the utilization rate of filter screen.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen production technology, specifically to a purification and dehydration device for nitrogen production. Background Technology

[0002] Nitrogen, a colorless and odorless inert gas, has a wide and indispensable application in many fields such as chemical engineering, food processing, electronics, and metallurgy. In chemical synthesis, nitrogen is often used as a protective gas to prevent reactants or products from being oxidized, ensuring the smooth progress of the reaction. In the food industry, nitrogen is used as a filler gas in food packaging to isolate oxygen, inhibit microbial growth, and extend the shelf life of food. In the electronic semiconductor manufacturing process, high-purity nitrogen can maintain a clean production environment, preventing contamination of chips and other precision components by moisture and oxygen, and ensuring product quality.

[0003] However, industrially produced nitrogen often contains impurities such as moisture, oxygen, and carbon dioxide, with moisture being one of the key factors affecting its quality and performance. When moisture-containing nitrogen is used in humidity-sensitive processes, the moisture can cause problems such as equipment corrosion and product deterioration due to moisture. For example, in integrated circuit manufacturing, moisture can react chemically with the metal materials on the chip surface, causing short circuits and reducing chip yield.

[0004] For example, Chinese utility model patent application number 202223143340.9 discloses a nitrogen purification device. A connecting block pushes a copper rod on the top surface of the mounting component, causing it to fall into a receiving box. The receiving box can be removed from the mounting door, and a new copper rod can be fed onto the mounting component through the feed pipe. Removing the copper rod is convenient, making the device easier to use and beneficial for nitrogen purification. However, this device still has certain drawbacks. When nitrogen is introduced into the shell, the lack of a reasonable flow guidance design means that when it passes through the activated carbon filter plate, the filtration can only be concentrated in the activated carbon filter plate. The airflow is unevenly distributed on the activated carbon filter plate, which causes the activated carbon in some areas to quickly become saturated, while the activated carbon in other areas does not play its full role, resulting in insufficient effective utilization of the entire filter plate.

[0005] Therefore, we propose a purification and dehydration device for nitrogen production to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a purification and dehydration device for nitrogen production, in order to solve the problem mentioned in the background art that the nitrogen in the current market lacks a reasonable flow guidance design when it is introduced into the shell. When it is filtered by the activated carbon filter plate, the filtration can only be concentrated in the activated carbon filter plate. The airflow is unevenly distributed on the activated carbon filter plate, which leads to the rapid adsorption saturation of activated carbon in some areas, while the activated carbon in other areas does not play a full role, resulting in insufficient effective utilization of the entire filter plate.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a purification and dehydration device for nitrogen production, comprising a purification and dehydration tank and an adsorption tank, wherein the adsorption tank is installed above the purification and dehydration tank, an air inlet pipe is installed above the purification and dehydration tank, and a filter screen is installed inside the purification and dehydration tank, and a flow divider is installed inside the purification and dehydration tank via a fixed shaft; The adsorption box is equipped with a first guide plate and a second guide plate, and the upper surface of both the first guide plate and the second guide plate is equipped with a first adsorption layer. The purification and dehydration tank is equipped with a second adsorption layer, and a condenser is installed on the right side of the purification and dehydration tank. A dryer is installed on the right side of the adsorption tank.

[0008] Preferably, the adsorption box is connected to the purification and dehydration box, and the air inlet pipe is connected to the interior of the adsorption box.

[0009] With the above structural design, the adsorption box and the purification and dehydration box are connected, so that the nitrogen gas undergoes double dehydration treatment in sequence, which improves the dehydration efficiency and avoids incomplete treatment in a single treatment.

[0010] Preferably, the manifold is located between the intake pipe and the filter screen, and the manifold is rotatably connected to the fixed shaft. When the manifold is in the vertical state, it is located directly below the intake pipe, and the length and width of the manifold are both greater than the diameter of the intake pipe.

[0011] With the above structural design, the air divider is located between the air intake pipe and the filter screen. It disperses the airflow by swinging, avoids local overload of the filter screen, and extends the service life of the filter screen.

[0012] Preferably, a first hinge assembly is installed on the front surface of the diverter plate, a connecting strip is installed on the first hinge assembly, a drive shaft is installed inside the adsorption box, the drive shaft is connected to the output end of the servo motor, the servo motor is fixed on the rear side of the adsorption box, a bearing seat is installed on the drive shaft, the bearing seat is fixed to the left inner wall of the adsorption box, a rotating strip is installed on the front side of the drive shaft, and the rotating strip is connected to the connecting strip through a second hinge assembly.

[0013] With the above structural design, the servo motor drives the splitter plate to swing, realizing the automatic and uniform distribution of airflow, reducing manual adjustment and improving the convenience of operation.

[0014] Preferably, the first adsorption layer is detachably connected to the first guide plate and the second guide plate, and the first guide plate and the second guide plate are designed with an inclined staggered structure.

[0015] With the above structural design, the first guide plate and the second guide plate are inclined and staggered, which extends the path of nitrogen in the adsorption box, so that the first adsorption layer can fully contact water vapor and enhance the adsorption effect.

[0016] Preferably, the first adsorption layer and the second adsorption layer are designed to be staggered.

[0017] With the above structural design, the first adsorption layer and the second adsorption layer are staggered to form a double adsorption barrier, which further removes residual moisture in nitrogen and ensures the accuracy of water removal.

[0018] Preferably, the condenser is connected to the adsorption box via a connecting pipe, and the condenser is connected to the dryer via an outlet pipe. A discharge pipe is installed on the right side of the dryer, and check valves are installed on both the connecting pipe and the outlet pipe.

[0019] With the above structural design, the condenser and dryer are connected by a connecting pipe and an outlet pipe, and a check valve is used to prevent gas backflow, ensuring stable operation of the condensation and drying process.

[0020] Compared with the prior art, the beneficial effects of this utility model are: the purification and dehydration device for nitrogen production: 1. Uniform flow distribution design: The flow distribution plate swings under the drive of the servo motor, which disperses the nitrogen gas relatively evenly to the filter screen, avoiding uneven filtration caused by concentrated airflow, and improving filtration efficiency and filter screen utilization. 2. High-efficiency adsorption and water removal: The first and second guide plates are inclined and staggered, which extends the path of nitrogen in the adsorption box. Combined with the adsorption of the first and second adsorption layers, the water removal efficiency is significantly improved. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main cross-section of the present invention; Figure 2 This is a schematic diagram of the main structure of this utility model; Figure 3 This is a schematic diagram of the rear view structure of this utility model; Figure 4 This is a schematic diagram of the connection structure between the flow divider and the rotating bar of this utility model; Figure 5 This is a schematic diagram of the bearing housing position structure of this utility model.

[0022] In the diagram: 1. Purification and dehydration tank; 2. Adsorption tank; 3. Inlet pipe; 4. Filter screen; 5. Fixed shaft; 6. Diverter plate; 7. First hinge assembly; 8. Connecting bar; 9. Drive shaft; 10. Servo motor; 11. Bearing seat; 12. Rotating bar; 13. Second hinge assembly; 14. First guide plate; 15. Second guide plate; 16. First adsorption layer; 17. Second adsorption layer; 18. Condenser; 19. Dryer; 20. Connecting pipe; 21. Outlet pipe; 22. Discharge pipe. 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 Figures 1-5 This utility model provides a technical solution: a purification and dehydration device for nitrogen production, comprising a purification and dehydration tank 1, an adsorption tank 2, an inlet pipe 3, a filter screen 4, a fixed shaft 5, a flow divider 6, a first hinge assembly 7, a connecting bar 8, a transmission shaft 9, a servo motor 10, a bearing seat 11, a rotating bar 12, a second hinge assembly 13, a first guide plate 14, a second guide plate 15, a first adsorption layer 16, a second adsorption layer 17, a condenser 18, a dryer 19, a connecting pipe 20, an outlet pipe 21, and a discharge pipe 22. The adsorption tank 2 is installed above the purification and dehydration tank 1, and the inlet pipe 3 is installed above the purification and dehydration tank 1. The inlet pipe 3 is connected to the inside of the adsorption box 2. After the nitrogen containing moisture is purified and dehydrated in the adsorption box 2, it enters the purification and dehydration box 1 for secondary treatment, which improves the dehydration efficiency of the nitrogen. The purification and dehydration box 1 is equipped with a filter screen 4. A diverter plate 6 is installed inside the purification and dehydration box 1 through a fixed shaft 5. The diverter plate 6 is located between the inlet pipe 3 and the filter screen 4. The diverter plate 6 is rotatably connected to the fixed shaft 5. When the diverter plate 6 is in the vertical state, it is located directly below the inlet pipe 3. The length and width of the diverter plate 6 are both greater than the diameter of the inlet pipe 3. When the diverter plate 6 is under force, it can swing back and forth from left to right to divert the nitrogen gas introduced into the inlet pipe 3.

[0025] The adsorption box 2 is equipped with a first guide plate 14 and a second guide plate 15. A first adsorption layer 16 is installed on the upper surface of both the first guide plate 14 and the second guide plate 15. A first hinge assembly 7 is installed on the front surface of the diverter plate 6, and a connecting strip 8 is installed on the first hinge assembly 7. A drive shaft 9 is installed inside the adsorption box 2, and the drive shaft 9 is connected to the output end of a servo motor 10. The servo motor 10 is fixed to the rear side of the adsorption box 2. A bearing seat 11 is installed on the drive shaft 9 and fixed to the left inner wall of the adsorption box 2. A rotating strip 12 is installed on the front side of the drive shaft 9, and the rotating strip 12 is connected to the connecting strip 8 via a second hinge assembly 13. When the servo motor 10 is started, the servo motor 10 drives the drive shaft 9 to rotate. Motor 10 drives rotating bar 12 to rotate. Rotating bar 12 drives flow divider 6 to swing around fixed shaft 5 through connecting bar 8, dispersing nitrogen gas onto filter screen 4. Filter screen 4 filters impurities in nitrogen gas. First adsorption layer 16 is detachably connected to first guide plate 14 and second guide plate 15. First guide plate 14 and second guide plate 15 are designed with an inclined staggered structure. After diversion, nitrogen gas enters adsorption box 2 and is guided by the inclined staggered first guide plate 14 and second guide plate 15, so that first adsorption layer 16 can fully contact and adsorb moisture and impurities, further filtering nitrogen gas. The first adsorption layer 16 and second adsorption layer 17 are designed with an alternating structure. The second adsorption layer 17 in purification and dewatering tank 1 can further filter moisture in nitrogen gas.

[0026] The purification and dehydration tank 1 is equipped with a second adsorption layer 17, and a condenser 18 is installed on the right side of the purification and dehydration tank 1. A dryer 19 is installed on the right side of the adsorption tank 2. The condenser 18 and the adsorption tank 2 are connected by a connecting pipe 20, and the condenser 18 and the dryer 19 are connected by an outlet pipe 21. An outlet pipe 22 is installed on the right side of the dryer 19. Check valves are installed on both the connecting pipe 20 and the outlet pipe 21. The adsorbed nitrogen enters the condenser 18 through the connecting pipe 20, where water vapor is condensed into liquid and discharged. It is then further dried by the dryer 19 and finally output as high-purity nitrogen through the outlet pipe 22.

[0027] It should be noted that the condenser 18 and dryer 19 in this application are commonly used devices in nitrogen purification technology. This application aims to optimize the filtration mechanism inside the adsorption box 2, so the internal structure and working principle of the condenser 18 and dryer 19 will not be described in detail. The first adsorption layer 16 is designed with water-absorbing material, and the second adsorption layer 17 is a molecular sieve.

[0028] Working principle: When using this nitrogen production purification and dehydration device, nitrogen is first delivered to the adsorption box 2 through the inlet pipe 3. At the same time, the servo motor 10 is started, which drives the transmission shaft 9 to rotate. The servo motor 10 drives the rotating bar 12 to rotate. The rotating bar 12 drives the diverter plate 6 to swing around the fixed shaft 5 through the connecting bar 8, dispersing the nitrogen onto the filter screen 4. The filter screen 4 filters the impurities in the nitrogen. The diverted nitrogen enters the adsorption box 2 and is guided by the inclined and staggered first guide plate 14 and second guide plate 15, so that the first adsorption layer 16 can fully contact and adsorb moisture and impurities, which further filters the nitrogen.

[0029] Nitrogen gas containing moisture is purified and dehydrated in adsorption tank 2, then enters purification and dehydration tank 1 for secondary treatment through the second adsorption layer 17, improving the dehydration efficiency. The adsorbed nitrogen gas then enters condenser 18 via connecting pipe 20, where water vapor condenses into liquid and is discharged. It is further dried by dryer 19, and finally, high-purity nitrogen gas is output from discharge pipe 22, thus completing a series of processes. Content not described in detail in this specification constitutes prior art known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A purification and dehydration device for nitrogen production, comprising a purification and dehydration tank (1) and an adsorption tank (2), wherein the adsorption tank (2) is installed above the purification and dehydration tank (1), characterized in that: An air inlet pipe (3) is installed above the purification and dewatering tank (1), and a filter screen (4) is installed inside the purification and dewatering tank (1). A flow divider plate (6) is installed inside the purification and dewatering tank (1) via a fixed shaft (5). The adsorption box (2) is equipped with a first guide plate (14) and a second guide plate (15), and the upper surfaces of the first guide plate (14) and the second guide plate (15) are both equipped with a first adsorption layer (16). The purification and dehydration tank (1) is equipped with a second adsorption layer (17), and a condenser (18) is installed on the right side of the purification and dehydration tank (1). A dryer (19) is installed on the right side of the adsorption tank (2).

2. The purification and dehydration device for nitrogen production according to claim 1, characterized in that: The adsorption box (2) is connected to the purification and dehydration box (1), and the air inlet pipe (3) is connected to the interior of the adsorption box (2).

3. The purification and dehydration apparatus for nitrogen production according to claim 1, characterized in that: The splitter plate (6) is located between the intake pipe (3) and the filter screen (4). The splitter plate (6) is rotatably connected to the fixed shaft (5). When the splitter plate (6) is in a vertical state, it is located directly below the intake pipe (3). The length and width of the splitter plate (6) are both greater than the diameter of the intake pipe (3).

4. The purification and dehydration apparatus for nitrogen production according to claim 3, characterized in that: The front surface of the diverter plate (6) is equipped with a first hinge assembly (7), and a connecting strip (8) is installed on the first hinge assembly (7). A drive shaft (9) is installed inside the adsorption box (2). The drive shaft (9) is connected to the output end of the servo motor (10). The servo motor (10) is fixed on the rear side of the adsorption box (2). A bearing seat (11) is installed on the drive shaft (9). The bearing seat (11) is fixed on the left inner wall of the adsorption box (2). A rotating strip (12) is installed on the front side of the drive shaft (9), and the rotating strip (12) is connected to the connecting strip (8) through a second hinge assembly (13).

5. The purification and dehydration apparatus for nitrogen production according to claim 1, characterized in that: The first adsorption layer (16) is detachably connected to the first guide plate (14) and the second guide plate (15), and the first guide plate (14) and the second guide plate (15) are designed with an inclined staggered structure.

6. The purification and dehydration apparatus for nitrogen production according to claim 1, characterized in that: The first adsorption layer (16) and the second adsorption layer (17) are designed in an alternating manner.

7. The purification and dehydration apparatus for nitrogen production according to claim 1, characterized in that: The condenser (18) is connected to the adsorption box (2) via a connecting pipe (20), and the condenser (18) is connected to the dryer (19) via an outlet pipe (21). An outlet pipe (22) is installed on the right side of the dryer (19), and check valves are installed on both the connecting pipe (20) and the outlet pipe (21).

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