Air separation equipment filter device with quick dismounting structure
By introducing a quick-release structure into the air separation unit's filter device, and utilizing the design of pull rods and clamping plates, tool-free disassembly of the filter screen is achieved, solving the problem of cumbersome traditional disassembly and assembly, improving maintenance efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-14
Smart Images

Figure CN224485328U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air separation equipment technology, and in particular to a filter device for air separation equipment with a quick disassembly and assembly structure. Background Technology
[0002] Air separation equipment uses air as raw material, transforming it into a liquid state through compression and deep freezing, and then gradually separating oxygen, nitrogen, and inert gases such as argon from the liquid air through distillation. Air separation equipment produced in my country comes in various forms and types, including units that produce gaseous oxygen and nitrogen, as well as units that produce liquid oxygen and nitrogen. However, in terms of basic processes, there are mainly four types: high-pressure, medium-pressure, high-low-pressure, and all-low-pressure processes.
[0003] In air separation equipment, the filter device is a key component for removing impurities and particulate matter from the air. Its performance directly affects the operating efficiency and product quality of the air separation equipment. Traditional air separation equipment filter devices usually use bolt connections, but bolt connections require tools, and the disassembly and assembly process is cumbersome and time-consuming, increasing maintenance costs and reducing the disassembly efficiency of the filter device. To address this issue, we propose an air separation equipment filter device with a quick disassembly and assembly structure. Utility Model Content
[0004] The purpose of this invention is to provide a filter device for air separation equipment with a quick-assembly and disassembly structure to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A filter device for an air separation unit with a quick-assembly and disassembly structure includes a fixed plate. A processing frame is fixedly connected to the upper surface of the fixed plate. Two sets of sliding holes are formed on the inner sidewall of the processing frame. Two pull rods are slidably connected inside the two sets of sliding holes. An air inlet is formed on the bottom surface of the fixed plate. A connecting flange is fixedly connected to the air inlet end. Two clamping plates are slidably connected inside the processing frame. Springs are fixedly connected to the opposite sides of the two clamping plates. The opposite ends of the two springs are fixedly connected to the inner sidewall of the processing frame. The opposite ends of the two pull rods are fixedly connected to the opposite sides of the clamping plates. Two placement plates are fixedly connected to the inner sidewall of the processing frame. A filter screen is placed on the upper surface of the two placement plates.
[0007] In a further embodiment, a positioning frame is fixedly connected to the upper surface of the fixing plate, and the inner sidewall of the positioning frame is fixedly connected to the outer surface of the processing frame.
[0008] In a further embodiment, a sealing groove is provided at the bottom end of the connecting flange, and two sets of mounting holes are provided on the bottom surface of the connecting flange.
[0009] In a further embodiment, limiting strips are fixedly connected to the sides of the two clamping plates that are close to each other, and the bottom surface of each limiting strip is in contact with the upper surface of the filter screen.
[0010] In a further embodiment, a reinforcing wedge is fixedly connected to the bottom surface of each of the placement plates, and the two reinforcing wedges are fixedly connected to the inner sidewall of the processing frame on opposite sides.
[0011] In a further embodiment, a cover plate is snapped onto the top of the processing frame, and the upper surface of the cover plate is threadedly connected to the top of the processing frame by mounting nails. The upper surface of the cover plate has multiple ventilation grooves.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This device allows the pull rod to slide within the sliding hole. Since the pull rod is connected to the clamping plate, this action will cause the clamping plate to move. As the clamping plate moves, the spring is compressed, thereby releasing the clamping plate from fixing the filter screen. The entire process does not require any tools, making it simple and quick to operate, greatly improving maintenance efficiency, and effectively solving the problems of cumbersome disassembly and assembly and high maintenance costs of traditional filter devices. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the filter device in an air separation unit with a quick-release assembly / disassembly structure.
[0015] Figure 2 This is a bottom view of the fixed plate in the filter unit of an air separation unit with a quick-release structure.
[0016] Figure 3 This is a top-section schematic diagram of the processing frame in the filter unit of an air separation unit with a quick-release structure.
[0017] Figure 4 This is a side sectional view of the processing frame in the filter unit of an air separation unit with a quick-release structure.
[0018] In the diagram: 1. Fixing plate; 2. Processing frame; 3. Positioning frame; 4. Cover plate; 5. Sliding hole; 6. Tie rod; 7. Connecting flange; 8. Sealing groove; 9. Mounting hole; 10. Air inlet; 11. Spring; 12. Clamping plate; 13. Limiting strip; 14. Placement plate; 15. Filter screen; 16. Reinforcing wedge. Detailed Implementation
[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[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] Please see Figure 1-4In this utility model, an air separation equipment filter device with a quick-assembly and disassembly structure includes a fixed plate 1. A processing frame 2 is fixedly connected to the upper surface of the fixed plate 1. Two sets of sliding holes 5 are opened on the inner side wall of the processing frame 2. Two pull rods 6 are slidably connected inside the two sets of sliding holes 5. An air inlet 10 is opened on the bottom surface of the fixed plate 1. A connecting flange 7 is fixedly connected to the air inlet end of the air inlet 10. Two clamping plates 12 are slidably connected inside the processing frame 2. Springs 11 are fixedly connected to the opposite sides of the two clamping plates 12. The opposite ends of the two springs 11 are fixedly connected to the inner side wall of the processing frame 2. The opposite ends of the two pull rods 6 are fixedly connected to the opposite sides of the clamping plates 12. Two placement plates 14 are fixedly connected to the inner side wall of the processing frame 2. A filter screen 15 is placed on the upper surface of the two placement plates 14.
[0023] A positioning frame 3 is fixedly connected to the upper surface of the fixing plate 1. The inner side wall of the positioning frame 3 is fixedly connected to the outer surface of the processing frame 2. The positioning frame 3 can be used to position the processing frame 2. A sealing groove 8 is provided at the bottom end of the connecting flange 7. Two sets of mounting holes 9 are provided on the bottom surface of the connecting flange 7. The flange can be installed in a designated position through the mounting holes 9. The sealing groove 8 is used to seal the connection. Limiting strips 13 are fixedly connected to the sides of the two clamping plates 12 that are close to each other. The bottom surface of each limiting strip 13 is in contact with the upper surface of the filter screen 15. The limiting strips 13 can be used to position the filter screen 15.
[0024] Each placement plate 14 has a reinforcing wedge 16 fixedly connected to its bottom surface. The two reinforcing wedges 16 are fixedly connected to the inner side wall of the processing frame 2 on opposite sides. The placement plate 14 can be reinforced by the reinforcing wedges 16. A cover plate 4 is snapped onto the top of the processing frame 2. The upper surface of the cover plate 4 is threaded to the top of the processing frame 2 by mounting nails. Multiple ventilation grooves are provided on the upper surface of the cover plate 4. The filter screen 15 can be protected by the cover plate 4.
[0025] The working principle of this utility model is as follows:
[0026] In use, the cover plate 4 is first fixed to the top of the processing frame 2 with mounting nails. Then, the filter device is installed in the designated position by the cooperation of the connecting flange 7 and the mounting hole 9. Air enters the processing frame 2 through the connecting flange 7. The filter screen 15 is placed on the placement plate 14 to filter impurities and particulate matter in the air. When the filter screen 15 is replaced, the pull rod 6 is pulled to slide inside the sliding hole 5. Since the pull rod 6 is connected to the clamping plate 12, it drives the clamping plate 12 to move. As the clamping plate 12 moves, the spring 11 is compressed, which allows the clamping plate 12 to release the filter screen 15. No tools are needed, which greatly improves maintenance efficiency and effectively solves the problems of cumbersome disassembly and assembly and high maintenance costs of traditional filter devices.
[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A filter device for air separation equipment with a quick-assembly and disassembly structure, characterized in that: The system includes a fixed plate (1), a processing frame (2) is fixedly connected to the upper surface of the fixed plate (1), two sets of sliding holes (5) are provided on the inner side wall of the processing frame (2), two pull rods (6) are slidably connected inside the two sets of sliding holes (5), an air inlet (10) is provided on the bottom surface of the fixed plate (1), a connecting flange (7) is fixedly connected to the air inlet end of the air inlet (10), two clamping plates (12) are slidably connected inside the processing frame (2), springs (11) are fixedly connected to the side of the two clamping plates (12) that are far apart from each other, and the ends of the two springs (11) that are far apart from each other are fixedly connected to the inner side wall of the processing frame (2), the ends of the two pull rods (6) that are close to each other are fixedly connected to the side of the clamping plates (12) that are far apart from each other, and two placement plates (14) are fixedly connected to the inner side wall of the processing frame (2), and a filter screen (15) is placed on the upper surface of the two placement plates (14).
2. The air separation equipment filter device with a quick-assembly and disassembly structure according to claim 1, characterized in that: The upper surface of the fixing plate (1) is fixedly connected to a positioning frame (3), and the inner sidewall of the positioning frame (3) is fixedly connected to the outer surface of the processing frame (2).
3. The air separation equipment filter device with a quick-assembly and disassembly structure according to claim 1, characterized in that: The bottom end of the connecting flange (7) is provided with a sealing groove (8), and the bottom surface of the connecting flange (7) is provided with two sets of mounting holes (9).
4. The air separation equipment filter device with a quick-assembly and disassembly structure according to claim 1, characterized in that: Limiting strips (13) are fixedly connected to one side of each of the two clamping plates (12) that are close to each other, and the bottom surface of each limiting strip (13) is in contact with the upper surface of the filter screen (15).
5. The air separation equipment filter device with a quick-assembly and disassembly structure according to claim 1, characterized in that: Each of the placement plates (14) has a reinforcing wedge (16) fixedly connected to its bottom surface, and the two reinforcing wedges (16) are fixedly connected to the inner side wall of the processing frame (2) on opposite sides.
6. The air separation equipment filter device with a quick-assembly and disassembly structure according to claim 1, characterized in that: The top of the processing frame (2) is fitted with a cover plate (4), and the upper surface of the cover plate (4) is threaded to the top of the processing frame (2) by mounting nails. The upper surface of the cover plate (4) is provided with multiple ventilation grooves.