Air filter device for nitrogen production

Abstract

The utility model discloses an air filtering device for nitrogen production, including filter box, the both sides of filter box all are provided with air inlet pipe, the top of filter box is connected with the communicating pipe, the top of communicating pipe is connected with upper air outlet pipe, the top side inner wall of filter box is fixed with cylinder filter cover and installs, installs activated carbon filter cartridge in communicating pipe, and the bottom ring is installed on filter box through extrusion reset subassembly, and the scraper ring is installed on the bottom ring, this air filtering device for nitrogen production is provided with cylinder filter cover in filter box, and the cylinder can filter all around, can increase filter area, and the speed of filtration will improve, still is provided with activated carbon filter cartridge, and air can be filtered again, can also absorb the water vapor in air simultaneously, and the extrusion reset subassembly is set up, and when filtering for a long time, the bottom ring is driven to move down by pressing the adjusting ring with force, and the impurity on the surface of cylinder filter cover is scraped off after the scraper ring moves down.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen production technology, and in particular to an air filtration device for nitrogen production. Background Technology

[0002] Nitrogen is an elemental form of nitrogen, with the chemical formula N2. At room temperature and pressure, it is a colorless and odorless gas. It can only react with hydrogen to produce ammonia under high temperature, high pressure, and catalytic conditions. Under electrical discharge, it can combine with oxygen to produce nitric oxide. Even active metals such as Ca, Mg, Sr, and Ba can only react with it under heating conditions. Filtration technology in nitrogen production is a key step in ensuring the purity and quality of nitrogen. Filtration removes dust, moisture, and other impurities from the air.

[0003] Nitrogen production requires the intake of air for extraction. However, the air contains a large amount of dust, which needs to be filtered. During the filtration process, the dust in the air passes through a filter plate. However, the filter plate only filters from one side, resulting in a relatively slow filtration speed and the generation of a large amount of impurities after filtration. This makes it difficult to process the filtered impurities. Therefore, an air filtration device for nitrogen production is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an air filtration device for nitrogen production, which solves the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An air filtration device for nitrogen production includes a filter box, with air inlet pipes on both sides of the filter box, a connecting pipe connected to the top of the filter box, and an upper air outlet pipe connected to the top of the connecting pipe. A cylindrical filter cover is fixedly installed on the inner wall of the top side of the filter box, and an activated carbon filter cartridge is installed inside the connecting pipe. A bottom ring is installed on the filter box via a compression reset assembly, and a scraper ring is installed on the bottom ring, which contacts the outer side of the cylindrical filter cover. A bottom discharge hole is opened at the bottom of the filter box, and a bottom sealing plate is rotatably installed on the bottom discharge hole. A moving push assembly is provided between the bottom sealing plate and the bottom ring.

[0007] Preferably, a top cover is installed on the upper air outlet pipe, and a control valve is provided on the air inlet pipe.

[0008] Preferably, the squeeze reset assembly includes a plurality of push columns fixedly installed on the top of the bottom ring, the top ends of the push columns extending outside the filter box body, and an adjustment ring fixedly installed thereon.

[0009] Preferably, a plurality of compression springs are fixedly installed between the adjusting ring and the top of the filter box.

[0010] Preferably, the moving push assembly includes a pressing column fixedly installed at the bottom of the bottom ring, and a convex slider is rotatably installed at the bottom of the pressing column.

[0011] Preferably, the top of the bottom sealing plate is provided with a convex groove, and the convex slider is slidably installed in the convex groove.

[0012] Preferably, the bottom side of the filter box is provided with a blocking groove, one side of the bottom sealing plate is located in the blocking groove, a first magnetic block is provided at the bottom of the filter box, and a second magnetic block is installed on the bottom sealing plate, and the first magnetic block and the second magnetic block are attracted to each other.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The air filtration device for nitrogen production has a cylindrical filter cover set in the filter box, which can filter all four sides of the cylinder. Compared with the traditional filter plate, it can increase the filtration area and improve the filtration speed. It also has an activated carbon filter cylinder, which can filter the air again and absorb moisture in the air. The squeeze reset component is set so that after long-term filtration, pressing the adjustment ring will drive the bottom ring to move down. After the scraper ring moves down, it will scrape off the impurities on the surface of the cylindrical filter cover. The scraped impurities will fall to the lower position.

[0014] The movable push component is designed so that the bottom ring moves, causing the downward pressure column to move. The bottom sealing plate will be rotated and opened. As the adjusting ring moves down, the bottom sealing plate will open to a larger angle, allowing dust and impurities to slide down effectively. This allows for quick processing of cleaned impurities and dust, facilitating subsequent filtration. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a partial cross-sectional structural schematic diagram of the present invention;

[0018] Figure 4 This utility model Figure 2 A schematic diagram of the structure of part A;

[0019] Figure 5 This utility model Figure 2 A schematic diagram of the structure of part B.

[0020] In the diagram: 1. Filter housing; 2. Inlet pipe; 3. Control valve; 4. Upper outlet pipe; 5. Connecting pipe; 6. Activated carbon filter cartridge; 7. Cylindrical filter cover; 8. Bottom discharge hole; 9. Bottom sealing plate; 10. Blocking groove; 11. First magnetic block; 12. Second magnetic block; 13. Top cover; 14. Adjusting ring; 15. Pushing column; 16. Compression spring; 17. Bottom ring; 18. Scraper ring; 19. Downward pressure column; 20. Convex sliding groove; 21. Convex slider. Detailed Implementation

[0021] 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.

[0022] Example: Refer to Figure 1-5 An air filtration device for nitrogen production includes a filter box 1, with air inlet pipes 2 on both sides of the filter box 1, a connecting pipe 5 connected to the top of the filter box 1, and an upper air outlet pipe 4 connected to the top of the connecting pipe 5. A cylindrical filter cover 7 is fixedly installed on the inner wall of the top side of the filter box 1. Air is delivered into the filter box 1 through the air inlet pipes 2. The delivery can be carried out by an external pump. After delivery, the air will be blocked and filtered by the cylindrical filter cover 7. With the cylindrical filter cover 7, filtration can be carried out on all four sides of the cylinder. Compared with traditional filter plates, the filtration area can be increased and the filtration speed can be improved. An activated carbon filter cylinder 6 is installed in the connecting pipe 5. A bottom ring 17 is installed on the filter box 1 through a compression reset assembly. A scraper ring 18 is installed on the bottom ring 17 and contacts the outer side of the cylindrical filter cover 7. A bottom discharge hole 8 is opened at the bottom of the filter box 1. A bottom sealing plate 9 is rotatably installed on the bottom discharge hole 8. A moving push assembly is provided between the bottom sealing plate 9 and the bottom ring 17.

[0023] Furthermore, a top cover 13 is installed on the upper air outlet pipe 4, and a control valve 3 is installed on the air inlet pipe 2. The filtered air will enter the connecting pipe 5, and an activated carbon filter cartridge 6 is installed in the connecting pipe 5. The activated carbon filter cartridge 6 contains activated carbon, and the filtered air can be filtered again by the activated carbon filter cartridge 6. At the same time, it can also absorb moisture in the air. The effectively filtered air will be delivered to the designated area through the upper air outlet pipe 4. After a period of filtration, the top cover 13 can be opened to remove the activated carbon filter cartridge 6 for replacement. The activated carbon filter cartridge 6 will not fall into the filter box 1.

[0024] Furthermore, the compression reset assembly includes multiple push columns 15 fixedly installed on the top of the bottom ring 17. The top of the push column 15 extends to the outside of the filter box 1 and is fixedly installed with an adjusting ring 14. Multiple compression springs 16 are fixedly installed between the adjusting ring 14 and the top of the filter box 1. The moving push assembly includes a pressing column 19 fixedly installed on the bottom of the bottom ring 17. A convex slider 21 is rotatably installed on the bottom of the pressing column 19. A convex groove 20 is opened on the top of the bottom sealing plate 9. The convex slider 21 is slidably installed in the convex groove 20. After long-term filtration, when a lot of dust and impurities adhere to the cylindrical filter cover 7, it needs to be cleaned. After stopping the air supply, press the adjusting ring 14 hard. Under the driving action of the push column 15, the bottom ring is moved. As the adjusting ring 14 moves downward, the scraper ring 18 will be compressed, and after it moves downward, it will scrape off the impurities on the surface of the cylindrical filter cover 7. The scraped impurities will fall to the lower position. The movement of the bottom ring 17 will drive the downward pressure column 19 to move, and the bottom sealing plate 9 will be rotated open. The dust and impurities that have fallen off will fall down. As the adjusting ring 14 continues to move downward, the scraper ring 18 can effectively clean the cylindrical filter cover 7. At this time, the bottom sealing plate 9 will open at a large angle, and the dust and impurities will effectively slide down. The remaining dust can be cleaned manually by the staff. The convex slider 21 and convex groove 20 are designed to drive the bottom sealing plate 9 to rotate and open when the downward pressure column 19 moves downward. The dust in the convex groove 20 also needs to be cleaned manually.

[0025] Furthermore, a blocking slot 10 is provided on the bottom side of the filter box 1, and one side of the bottom sealing plate 9 is located in the blocking slot 10. A first magnetic block 11 is provided at the bottom of the filter box 1, and a second magnetic block 12 is installed on the bottom sealing plate 9. The first magnetic block 11 and the second magnetic block 12 attract each other. After cleaning, the adjusting ring 14 is released, and under the elastic force of the compression spring 16, the bottom ring 17 is moved upward. At the same time, the bottom sealing plate 9 will also rotate and close. The blocking slot 10 can block the bottom sealing plate 9 to the closed position. The first magnetic block 11 and the second magnetic block 12 can have a certain adsorption force after the bottom sealing plate 9 moves upward and closes, avoiding the problem that the compression spring 16 will not be able to close effectively due to insufficient elasticity after long-term use.

[0026] In use: Nitrogen production requires the intake of air for extraction. Since the air contains a large amount of dust, a filter screen is needed to filter it. A cylindrical filter cover 7 is used, allowing filtration from all four sides. Compared to traditional filter plates, this increases the filtration area and speed. The filtered air enters the connecting pipe 5, where an activated carbon filter cartridge 6 is installed. The air is filtered again, and moisture is absorbed. After prolonged filtration, pressing the adjusting ring 14 causes the bottom ring 17 to move downwards. The scraper ring 18 then scrapes away impurities from the surface of the cylindrical filter cover 7. The scraped impurities fall to the lower position. The movement of the bottom ring 17 moves the pressing column 19, causing the bottom sealing plate 9 to rotate and open. As the adjusting ring 14 continues to move downwards, the scraper ring 18 effectively cleans the cylindrical filter cover 7. At this point, the bottom sealing plate 9 opens to a larger angle, allowing dust and impurities to slide down. Any remaining dust can be manually cleaned by staff. It is convenient to use.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air filtration device for nitrogen production, comprising a filter housing (1), characterized in that, The filter box (1) is provided with air inlet pipes (2) on both sides. The top of the filter box (1) is connected to a connecting pipe (5). The top of the connecting pipe (5) is connected to an upper air outlet pipe (4). A cylindrical filter cover (7) is fixedly installed on the inner wall of the top side of the filter box (1). An activated carbon filter cylinder (6) is installed inside the connecting pipe (5). A bottom ring (17) is installed on the filter box (1) by a compression reset assembly. A scraper ring (18) is installed on the bottom ring (17). The scraper ring (18) is in contact with the outer side of the cylindrical filter cover (7). A bottom discharge hole (8) is opened at the bottom of the filter box (1). A bottom sealing plate (9) is rotatably installed on the bottom discharge hole (8). A moving push assembly is provided between the bottom sealing plate (9) and the bottom ring (17).

2. The air filtration device for nitrogen production according to claim 1, characterized in that, A top cover (13) is installed on the upper air outlet pipe (4), and a control valve (3) is installed on the air inlet pipe (2).

3. The air filtration device for nitrogen production according to claim 1, characterized in that, The squeeze reset assembly includes a plurality of push columns (15) fixedly installed on the top of the bottom ring (17), the top of the push columns (15) extending to the outside of the filter box (1) and fixedly installed with an adjustment ring (14).

4. An air filtration device for nitrogen production according to claim 3, characterized in that, Multiple compression springs (16) are fixedly installed between the adjusting ring (14) and the top of the filter box (1).

5. An air filtration device for nitrogen production according to claim 1, characterized in that, The moving push assembly includes a pressing column (19) fixedly installed at the bottom of the bottom ring (17), and a convex slider (21) is rotatably installed at the bottom of the pressing column (19).

6. An air filtration device for nitrogen production according to claim 5, characterized in that, The bottom sealing plate (9) has a convex groove (20) on its top, and the convex slider (21) is slidably installed in the convex groove (20).

7. An air filtration device for nitrogen production according to claim 1, characterized in that, The filter box (1) has a blocking slot (10) on its bottom side. One side of the bottom sealing plate (9) is located in the blocking slot (10). A first magnetic block (11) is provided at the bottom of the filter box (1), and a second magnetic block (12) is installed on the bottom sealing plate (9). The first magnetic block (11) and the second magnetic block (12) attract each other.

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