Combined nitrogen filter element

Abstract

The utility model relates to nitrogen production technical field discloses a combined nitrogen filter core, including upper filter head, the locking mechanism includes elastic dog, the outside of elastic dog is slid in the outside of upper filter head is connected, the outside of elastic dog is connected with extruding block, the outside fixed connection of upper filter head has fixed shaft, the top fixed connection of fixed shaft has anti -drop spring, the other end fixed connection of anti -drop spring is in the bottom side inside of extruding block. In the utility model, the upper and lower sides of two sealing washers and filter core shell that slide in the outside of upper filter head are adhered to realize sealing and protection function, and the two compression compensation components that slide in the outside of upper filter head realize automatic compensation compression, and the elastic dog that slide in the outside of upper filter head is fixed with the help of extruding block that is connected in the outside of elastic dog and carries out clamping to upper filter head.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen production technology, and in particular to a combined nitrogen filter element. Background Technology

[0002] The field of nitrogen production technology mainly involves techniques for extracting, separating, and purifying nitrogen from air or natural gas using various methods. Common nitrogen production methods include cryogenic separation, membrane separation, and pressure swing adsorption (PSA). These technologies are widely used in industrial production, medical fields, and gas treatment, among others. Combined nitrogen filter cartridges are a commonly used piece of equipment in the nitrogen production process, primarily used to filter out impurities and moisture from the gas, ensuring the purity and quality of the nitrogen. In nitrogen production technology, combined nitrogen filter cartridges help improve nitrogen purity and ensure the normal operation of equipment. Therefore, there is a close relationship between nitrogen production technology and combined nitrogen filter cartridges; the quality and design of the filter cartridges directly affect nitrogen production efficiency and the quality of the final product.

[0003] The working principle of a combined nitrogen filter cartridge primarily relies on a multi-stage filtration and separation process. It uses a combination of filter cartridges of different materials and structures to progressively remove particulate matter, moisture, oil mist, and other impurities from nitrogen. First, a coarse filter layer filters out larger particles. Then, a medium-efficiency filter captures smaller impurities and removes moisture and oil mist through adsorption and chemical reactions. Finally, a high-efficiency filter further purifies the nitrogen, ensuring its purity meets industrial or medical standards. Combined nitrogen filter cartridges typically employ multi-layer filtration technology, combining filter screens of different materials, activated carbon, and desiccants to improve the purity and stability of nitrogen, ensuring gas quality during nitrogen production. Through this series of processes, combined nitrogen filter cartridges provide reliable purification assurance for nitrogen production.

[0004] In existing technologies, some modular nitrogen filter elements use nuts and screws for installation and disassembly. While this design ensures the stability and sealing of the filter element, the disassembly process is cumbersome in practice, requiring tools to unscrew the nuts and screws, which is time-consuming and labor-intensive. Furthermore, improper operation can easily damage the threads or cause incorrect installation, affecting the normal use of the filter element. This drawback complicates equipment maintenance and reduces repair efficiency. Therefore, a modular nitrogen filter element is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a combined nitrogen filter element, which aims to improve the problem that some combined nitrogen filter elements in the prior art are difficult to disassemble because they are installed and disassembled using nuts and screws.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a combined nitrogen filter element, including an upper filter head, a combined filter mechanism slidably connected to the outside of the upper filter head, a locking mechanism slidably connected to the outside of the upper filter head, and two sealing gaskets slidably connected to the outside of the upper filter head, with the adjacent sides of the two sealing gaskets abutting against the combined filter mechanism.

[0007] The locking mechanism includes an elastic claw, which is slidably connected to the outside of the upper filter head. A pressing block is threadedly connected to the outside of the elastic claw. A fixed shaft is fixedly connected to the outside of the upper filter head. An anti-detachment spring is fixedly connected to the top of the fixed shaft. The other end of the anti-detachment spring is fixedly connected to the inside of the bottom side of the pressing block. A compression compensation component is slidably connected to the outside of the upper filter head. The bottom of the compression compensation component is in contact with the top of the elastic claw.

[0008] As a further description of the above technical solution: the combined filtration mechanism includes a filter inner shell, the outer side of which is slidably connected to the outside of the upper filter head, a plurality of combined blocks are fixedly connected to the outside of the filter inner shell, a filter outer shell is rotatably connected to the outside of the combined blocks, and an adsorption block is slidably connected to the side of the filter outer shell and the filter inner shell that is close to each other.

[0009] As a further description of the above technical solution: the compression compensation assembly includes a support shaft, the support shaft is slidably connected to the outside of the upper filter head, a compensation spring is fixedly connected to the outside of the support shaft, a plurality of support blocks are fixedly connected to the outside of the support shaft, the outside of the compensation spring is in contact with the inside of the support block, and the side of the support shaft that is close to the side of the sealing gasket that is far from the side.

[0010] As a further description of the above technical solution: the top of the elastic claw adopts a funnel-shaped block with a larger top and a smaller bottom, the outer side of the elastic claw is provided with a threaded groove, and the inner side of the elastic claw is provided with multiple square blocks;

[0011] As a further description of the above technical solution: the bottom of the extrusion block and the top of the fixed shaft are both provided with mounting grooves, and the anti-detachment spring is externally fixedly connected to the inside of the mounting groove;

[0012] As a further description of the above technical solution: both the inner shell and the outer shell of the filter element are provided with filter holes, and the filter holes provided inside the outer shell of the filter element are larger than the filter holes that can be opened and closed inside the outer shell of the filter element.

[0013] As a further description of the above technical solution: the interior of the filter element shell is provided with an arc-shaped groove, and the exterior of the assembly block is rotatably connected to the interior of the arc-shaped groove;

[0014] As a further description of the above technical solution: the inner shell of the filter element is an I-shaped block, the inner side of the outer shell of the filter element is provided with a groove, the outer shell of the filter element and the inner shell of the filter element are combined to form a cavity, and the external part of the adsorption block is slidably connected to the inner wall of the cavity.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, two sealing gaskets slidably connected to the outside of the upper filter head and the upper and lower sides of the filter element shell fit together to achieve sealing and protection functions. Two compression compensation components slidably connected to the outside of the upper filter head achieve automatic compensation of compression amount. The elastic claw slidably connected to the outside of the upper filter head, with the help of the extrusion block threadedly connected to the outside of the elastic claw, clamps and fixes the upper filter head, thereby replacing the complicated nut connection. Furthermore, the fixed shaft fixed to the outside of the upper filter head and the anti-detachment spring at the top of the fixed shaft cooperate to achieve the function of preventing the extrusion block from falling off.

[0017] 2. In this utility model, multiple combination blocks fixed to the outside of the filter element inner shell are combined with the arc groove opened inside the filter element outer shell to complete the combination, so that there is a cavity between the filter element inner shell and the filter element outer shell to provide an installation position for the adsorption block. It supports quick replacement of the filter element outer shell, filter element inner shell and adsorption block, and realizes the free combination of "filtration + impurity removal + drying" functions, thereby improving the practicality of the device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a combined nitrogen filter element proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the sealing gasket structure of a combined nitrogen filter element proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the adsorption block of a combined nitrogen filter element proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the extrusion block of a combined nitrogen filter element proposed in this utility model.

[0022] Legend:

[0023] 1. Upper filter head; 2. Filter cartridge housing; 3. Adsorption block; 4. Filter cartridge inner shell; 5. Assembly block; 6. Compensating spring; 7. Sealing gasket; 8. Support block; 9. Support shaft; 10. Elastic claw; 11. Squeezing block; 12. Anti-detachment spring; 13. Fixed shaft. Detailed Implementation

[0024] 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.

[0025] Reference Figure 1 , Figure 2 , Figure 4 This utility model provides an embodiment of a combined nitrogen filter element, including an upper filter head 1, which is one of the main structures of the combined nitrogen filter element and is responsible for the installation and sealing of the filter element. A combined filtration mechanism is slidably connected to the outside of the upper filter head 1. The main function of the combined filtration mechanism is to filter and purify nitrogen, removing impurities and particulate matter. A locking mechanism is slidably connected to the outside of the upper filter head 1 to fix and lock the various components of the combined filter element, ensuring their stability during use. Two sealing gaskets 7 are slidably connected to the outside of the upper filter head 1 to provide a seal between the components and prevent nitrogen leakage. The two sealing gaskets 7 are respectively installed on the outside of the upper filter head 1, adhering to one side of the combined filtration mechanism, ensuring an effective seal between the filter element and other components, maintaining the purity and quality of the nitrogen. The adjacent sides of the two sealing gaskets 7 are in contact with the combined filtration mechanism.

[0026] The locking mechanism includes an elastic claw 10, which is slidably connected to the outside of the upper filter head 1. The elastic claw 10 is elastic, allowing it to adapt to different installation and disassembly requirements. The outer surface of the elastic claw 10 is slidably connected to the outside of the upper filter head 1, enabling elastic expansion and contraction to achieve tight locking of different components. A pressing block 11 is threadedly connected to the outer surface of the elastic claw 10. The pressing block 11 is threadedly connected to the elastic claw 10 and works in conjunction with an anti-detachment spring 12 to provide additional locking force, ensuring the stability of the entire system. The combination design of the pressing block 11 and the elastic claw 10 makes the entire locking process more secure, preventing the filter element from loosening or falling off. A fixed shaft 13 is fixedly connected to the outside of the upper filter head 1. The fixed shaft 13 is an important component in the locking mechanism, used to maintain the fixed connection between the upper filter head 1 and other components. The top of the fixed shaft 13 is fixedly connected to the anti-detachment spring 12, which provides additional safety and ensures that the filter element remains stable even when the pressure changes. The other end of the anti-detachment spring 12 is fixedly connected to the inside of the bottom side of the squeezing block 11. The upper filter head 1 is slidably connected to the outside of the compression compensation component. The bottom of the compression compensation component is in contact with the top of the elastic claw 10. The top of the elastic claw 10 adopts a funnel-shaped block with a larger top and a smaller bottom. The outer side of the elastic claw 10 is provided with a threaded groove, and the inner side of the elastic claw 10 is provided with multiple square blocks. The bottom of the squeezing block 11 and the top of the fixed shaft 13 are both provided with mounting grooves. The outer side of the anti-detachment spring 12 is fixedly connected to the inside of the mounting groove.

[0027] The compression compensation assembly includes a support shaft 9, which is externally slidably connected to the outside of the upper filter head 1. The support block 8, through the interaction between the compensation spring 6 and the support shaft, can automatically compensate during the operation of the filter element, maintain the pressure balance inside the filter element, and prevent sealing failure caused by airflow changes. The support shaft 9 is externally slidably connected to the outside of the upper filter head 1, and the compensation spring 6 is fixedly connected to the outside of the support shaft 9. Multiple support blocks 8 are fixedly connected to the outside of the support shaft 9. The outside of the compensation spring 6 is in contact with the inside of the support block 8, and the side of the support shaft 9 that is close to the side of the sealing gasket 7 that is far away is in contact with the side of the support shaft 9 that is close to the sealing gasket 7.

[0028] Reference Figure 1 , Figure 3The combined filtration mechanism includes an inner filter housing 4, and the inner filter housing 4 and the outer filter housing 2 are connected by a combination block 5 and a rotatable design to form a filtration structure. The inner filter housing 4 adopts an I-shaped block to provide sufficient space to accommodate the adsorption block 3, filter holes and other filter media. The outer side of the inner filter housing 4 is slidably connected to the outside of the upper filter head 1. Multiple combination blocks 5 are fixedly connected to the outside of the inner filter housing 4. The outer filter housing 2 is rotatably connected to the outside of the combination block 5. The inner side of the outer filter housing 2 is provided with a groove, which, together with the inner filter housing 4, forms a closed filtration space. The filter pores inside the filter housing 2 are larger than those inside the inner shell, which helps to remove impurities from the gas in multiple layers. An adsorption block 3 is slidably connected to the filter housing 2 and the filter inner shell 4 on the side close to each other. The adsorption block 3 is designed to be slidably connected to the inner wall of the filter housing 2. Its main function is to adsorb pollutants such as moisture and oil mist in nitrogen. Filter pores are opened inside both the filter inner shell 4 and the filter housing 2. The filter pores opened inside the filter housing 2 are larger than the filter pores that open and close inside the filter housing 2. Arc-shaped grooves are opened inside the filter housing 2. The outside of the combined block 5 is rotatably connected to the inside of the arc-shaped grooves. The filter inner shell 4 is an I-shaped block. A groove is opened on the inside of the filter housing 2. The filter housing 2 and the filter inner shell 4 are combined to form a cavity. The outside of the adsorption block 3 is slidably connected to the inner wall of the cavity.

[0029] Working principle: Multiple combination blocks 5 fixed on the outside of the inner shell 4 of the filter element are combined with the arc groove opened inside the outer shell 2 of the filter element to complete the combination, so that there is a cavity between the inner shell 4 and the outer shell 2 of the filter element to provide an installation position for the adsorption block 3. It supports quick replacement of the outer shell 2, the inner shell 4, and the adsorption block 3, and realizes the free combination of "filtration + impurity removal + drying" functions, thereby improving the practicality of the device.

[0030] Two sealing gaskets 7 slidably connected to the outside of the upper filter head 1 fit together with the upper and lower sides of the filter element housing 2 to achieve sealing and protection functions. Two compression compensation components slidably connected to the outside of the upper filter head 1 achieve automatic compensation of compression amount. The elastic claws 10 slidably connected to the outside of the upper filter head 1, with the help of the squeezing block 11 threadedly connected to the outside of the elastic claws 10, clamp and fix the upper filter head 1, thereby replacing the complicated nut connection. The fixed shaft 13 fixed to the outside of the upper filter head 1 and the anti-detachment spring 12 at the top of the fixed shaft 13 cooperate with each other to achieve the function of preventing the squeezing block 11 from falling off.

[0031] The compression compensation component dynamically replenishes the compression amount by compensating for the elasticity of the spring 6 itself, while the cooperation between the support shaft 9 and the support block 8 ensures that the compensation spring 6 will not be over-compensated and thus not damaged.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A combined nitrogen filter element, comprising an upper filter head (1), characterized in that: The upper filter head (1) is externally slidably connected to a combined filter mechanism, the upper filter head (1) is externally slidably connected to a locking mechanism, and the upper filter head (1) is externally slidably connected to two sealing gaskets (7), with the adjacent side of the two sealing gaskets (7) fitting against the combined filter mechanism. The locking mechanism includes an elastic claw (10), which is slidably connected to the outside of the upper filter head (1). A pressing block (11) is threadedly connected to the outside of the elastic claw (10). A fixed shaft (13) is fixedly connected to the outside of the upper filter head (1). An anti-detachment spring (12) is fixedly connected to the top of the fixed shaft (13). The other end of the anti-detachment spring (12) is fixedly connected to the bottom side of the pressing block (11). A compression compensation component is slidably connected to the outside of the upper filter head (1). The bottom of the compression compensation component is in contact with the top of the elastic claw (10).

2. The combined nitrogen filter element according to claim 1, characterized in that: The combined filtration mechanism includes a filter inner shell (4), the outer side of which is slidably connected to the outer side of the upper filter head (1), and a plurality of combined blocks (5) are fixedly connected to the outer side of the filter inner shell (4). A filter outer shell (2) is rotatably connected to the outer side of the combined blocks (5). An adsorption block (3) is slidably connected to the side of the filter outer shell (2) and the filter inner shell (4).

3. A combined nitrogen filter element according to claim 1, characterized in that: The compression compensation assembly includes a support shaft (9), which is slidably connected to the outside of the upper filter head (1). A compensation spring (6) is fixedly connected to the outside of the support shaft (9), and a plurality of support blocks (8) are fixedly connected to the outside of the support shaft (9). The outside of the compensation spring (6) is in contact with the inside of the support block (8), and the side of the support shaft (9) that is close to the side of the sealing gasket (7) that is far from the side.

4. A combined nitrogen filter element according to claim 1, characterized in that: The top of the elastic claw (10) is a funnel-shaped block with a larger top and a smaller bottom. The outer side of the elastic claw (10) is provided with a threaded groove, and the inner side of the elastic claw (10) is provided with multiple square blocks.

5. A combined nitrogen filter element according to claim 1, characterized in that: The bottom of the extrusion block (11) and the top of the fixed shaft (13) are both provided with mounting grooves, and the outside of the anti-detachment spring (12) is fixedly connected to the inside of the mounting groove.

6. A combined nitrogen filter element according to claim 2, characterized in that: Both the inner shell (4) and the outer shell (2) of the filter element are provided with filter holes. The filter holes inside the outer shell (2) of the filter element are larger than the filter holes that can be opened and closed inside the outer shell (2).

7. A combined nitrogen filter element according to claim 2, characterized in that: The filter housing (2) has an arc-shaped groove inside, and the assembly block (5) is rotatably connected to the inside of the arc-shaped groove.

8. A combined nitrogen filter element according to claim 2, characterized in that: The inner shell (4) of the filter element is an I-shaped block. The inner side of the outer shell (2) of the filter element is provided with a groove. The outer shell (2) and the inner shell (4) of the filter element are combined to form a cavity. The outer side of the adsorption block (3) is slidably connected to the inner wall of the cavity.

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