Clean air pipe structure for preventing transportation pollution of inner wall of air pipe
By designing filters and auxiliary structures in the clean air duct structure, the problem of pollutant accumulation inside the duct was solved, achieving clean air and stable operation, and simplifying the installation process.
Patent Information
- Application Number
- CN202520838908.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-29
AI Technical Summary
Over time, dust, debris, and other particulate matter will gradually enter and accumulate in the ductwork, leading to poor air circulation, affecting indoor air quality, and failing to meet the requirements for a clean environment.
A clean air duct structure was designed, which includes a first duct, a second duct, an adjustment structure, and an auxiliary structure. By setting up a filter and auxiliary structure, it is possible to achieve rapid installation and stable fixation, ensuring clean air.
It effectively blocks dust and debris in the air, improves filtration efficiency and operational stability, simplifies the installation process, saves manpower, and prevents water leakage and shaking.
Smart Images

Figure CN223895357U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air ducts, and in particular to a clean air duct structure with an inner wall that prevents transportation contamination. Background Technology
[0002] In building construction, the main function of air ducts is to transport air to achieve air conditioning, ventilation, and filtration, thereby ensuring indoor air quality. Traditional air ducts are generally made of metal materials, such as galvanized steel sheets and aluminum alloys, which have strong corrosion resistance and structural stability. However, in some special environments, such as clean rooms, pharmaceutical factories, and electronics factories, the requirements for air ducts are more stringent. They must not only have good sealing performance, but also ensure that airborne particles and pollutants do not affect environmental quality.
[0003] Existing technologies, such as the utility model patent with publication number CN221034613U, disclose a clean air duct structure for preventing transportation contamination of the inner wall of the duct. This patent includes several positioning holes penetrating its edge and multiple sets of bolts fixed to the duct opening of the clean air duct body. A sealing device is installed on the duct opening of the clean air duct body. The sealing device is a cover one, with a magnetic strip on the edge facing the duct opening. The magnetic strip and the cover are connected by adhesive. The area of cover one is larger than the area of the duct opening, so that the magnetic strip and the upper outer edge of the duct opening are magnetically attracted. The sealing device is a cover two, with adhesive tape on the edge facing the duct opening. The area of cover two is larger than the area of the duct opening, so that the adhesive tape is pasted to the upper outer edge of the duct opening. This solves the defect of existing prefabricated clean air ducts where the inner wall of the duct is easily contaminated during transportation and installation, affecting its later use.
[0004] In daily use, it has been found that dust, debris, and other particulate matter gradually enter the ducts over a long period of time and accumulate over time. As dust and debris accumulate, the pollutants inside the ducts gradually increase, resulting in poor air circulation and ultimately affecting indoor air quality, failing to meet the requirements for a clean environment.
[0005] Therefore, it is necessary to provide a new clean duct structure with an inner wall that prevents transportation contamination to solve the above-mentioned technical problems. Utility Model Content
[0006] The purpose of this invention is to address the shortcomings of existing technologies where dust, debris, and other particulate matter gradually enter and accumulate in ducts over long-term use. As dust and debris accumulate, pollutants inside the duct gradually increase, leading to poor air circulation and ultimately affecting indoor air quality, failing to meet clean environment requirements. Therefore, this invention proposes a clean duct structure with an inner wall that prevents transportation contamination.
[0007] To solve the above-mentioned technical problems, this utility model provides a clean air duct structure with an inner wall for preventing transportation contamination, comprising: a first pipe, a second pipe, an adjustment structure, and an auxiliary structure. The first pipe is fixed to the second pipe by means of the auxiliary structure. The inner wall of the second pipe is provided with an adjustment structure, which includes a filter screen. The filter screen abuts against the second pipe. Two fixing blocks are fixedly connected to the arc surface of the second pipe. Two fixing rods are fixedly connected to one side of each fixing block. The arc surfaces of the two fixing rods are slidably connected to the same pull plate. A spring is sleeved on the arc surface of each fixing rod. The two ends of the spring are fixedly connected to the fixing block and the pull plate, respectively. A handle is fixedly connected to one side of the pull plate, and an insert plate is fixedly connected to the other side of the pull plate. Two connecting frames are fixedly connected to the arc surface of the second pipe. A positioning plate is slidably connected to the inner wall of each connecting frame. The positioning plate is fixedly connected to the filter screen. The insert plate is slidably connected to both the connecting frame and the positioning plate.
[0008] The effect achieved by the above components is that the filter screen can be installed or disassembled by setting the adjustment structure, so that the filter screen can block dust or debris in the air, thereby keeping the air in the pipeline clean and improving the filtration efficiency and operational stability of the system.
[0009] Preferably, two auxiliary blocks are fixedly connected to one side of the filter screen, and a limit rod is fixedly connected to one side of each of the two auxiliary blocks. An adjustment block is slidably connected to the arc surface of the limit rod, and the adjustment block is fixedly connected to the second pipe.
[0010] The effect achieved by the above components is that the auxiliary block, limit rod, and adjustment block can fix the filter screen more stably and prevent the filter screen from shaking.
[0011] Preferably, the arc surface of the handle is fixedly connected to an anti-slip sleeve, and the anti-slip sleeve has anti-slip texture.
[0012] The effect achieved by the above components is that the anti-slip sleeve can increase the friction of the handle and prevent the person from slipping when pulling the handle.
[0013] Preferably, one end of the fixing rod is fixedly connected to a limiting block, and the limiting block has a circular cross-section.
[0014] The effect achieved by the above components is that the limiting block can limit the pull plate and prevent the pull plate from detaching from the fixing rod.
[0015] Preferably, the arc surfaces of the first and second pipes are provided with auxiliary structures, the auxiliary structures including fixing rings, the fixing rings being fixedly connected to the first and second pipes respectively, the arc surfaces of the fixing rings being fixedly connected to two positioning blocks, the inner walls of the two positioning blocks being slidably connected to the same positioning rod, the arc surfaces of the fixing rings being fixedly connected to two auxiliary plates, the inner walls of the two auxiliary plates being threadedly connected to the same screw.
[0016] The effect achieved by the above components is that by setting up auxiliary structures, the first and second pipes can be quickly and easily fixedly connected, avoiding the cumbersome and time-consuming method of fixing with screws, thus greatly saving the physical strength of personnel.
[0017] Preferably, a soft pad, which is a rubber pad, is fixedly connected to one side of one of the fixing rings.
[0018] The effect achieved by the above components is that the soft pad can increase the sealing of the retaining ring, thereby preventing water leakage.
[0019] Preferably, a guide cone is fixedly connected to one end of the positioning rod.
[0020] The effect achieved by the above components is that, due to the small volume of the guide cone, the positioning rod can be better inserted into the positioning block.
[0021] Compared with related technologies, the clean air duct structure with anti-contamination inner wall provided by this utility model has the following beneficial effects:
[0022] This utility model provides a clean air duct structure with an inner wall that prevents transportation contamination. By setting an adjustment structure, the filter screen can be easily installed or disassembled, so that it can effectively block dust, debris and other pollutants in the air, thereby ensuring the cleanliness of the air in the duct and improving the filtration efficiency and operational stability of the system.
[0023] By setting up auxiliary structures, the first and second pipes can be quickly and conveniently fixedly connected, avoiding the cumbersome and time-consuming traditional screw fixing method, thus significantly improving installation efficiency and effectively saving the physical exertion of operators. Attached Figure Description
[0024] Figure 1 A schematic diagram of a clean air duct structure for preventing transportation contamination on the inner wall of an air duct provided by this utility model;
[0025] Figure 2 for Figure 1 The diagram shows the structural schematic of the adjustment structure.
[0026] Figure 3 for Figure 2 Enlarged view of point A;
[0027] Figure 4 for Figure 1 The diagram shows the structure of the auxiliary structure.
[0028] The diagram is labeled as follows: 1. First pipe; 2. Second pipe; 3. Adjustment structure; 301. Fixing block; 302. Fixing rod; 303. Pull plate; 304. Spring; 305. Handle; 306. Insert plate; 307. Connecting frame; 308. Positioning plate; 309. Filter screen; 310. Auxiliary block; 311. Limiting rod; 312. Adjustment block; 313. Anti-slip sleeve; 314. Limiting block; 4. Auxiliary structure; 41. Fixing ring; 42. Positioning block; 43. Positioning rod; 44. Auxiliary plate; 45. Screw; 46. Guide cone; 47. Soft pad. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0030] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0031] Please see Figures 1 to 4 The present invention provides a clean air duct structure for preventing transportation pollution on the inner wall of the air duct, comprising: a first pipe 1, a second pipe 2, an adjustment structure 3, and an auxiliary structure 4. The first pipe 1 is fixed to the second pipe 2 by means of the auxiliary structure 4. The inner wall of the second pipe 2 is provided with the adjustment structure 3. The arc surfaces of the first pipe 1 and the second pipe 2 are provided with the auxiliary structure 4.
[0032] In the embodiments of this utility model, please refer to Figure 2 and Figure 3The adjustment structure 3 includes a filter screen 309, which abuts against the second pipe 2. Two fixing blocks 301 are fixedly connected to the arc surface of the second pipe 2. Two fixing rods 302 are fixedly connected to one side of each fixing block 301. A pull plate 303 is slidably connected to the arc surfaces of the two fixing rods 302. A spring 304 is sleeved on the arc surface of each fixing rod 302. Both ends of the spring 304 are fixedly connected to the fixing block 301 and the pull plate 303, respectively. A handle 305 is fixedly connected to one side of the pull plate 303, and an insert plate 306 is fixedly connected to the other side. Two connecting frames 307 are fixedly connected to the arc surface of the second pipe 2. A positioning plate 308 is slidably connected to the inner wall of each connecting frame 307. The positioning plate 308 is fixedly connected to the filter screen 309. The insert plate 306 is slidably connected to both the connecting frames 307 and the positioning plate 308. By setting the adjustment structure 3, the filter screen 309 can be installed or disassembled, allowing the filter screen 309 to filter dust or debris in the air. To block the air and keep the air in the pipe clean, thereby improving the filtration efficiency and operational stability of the system, two auxiliary blocks 310 are fixedly connected to one side of the filter screen 309. Each of the two auxiliary blocks 310 is fixedly connected to one side of a limit rod 311. An adjustment block 312 is slidably connected to the arc surface of the limit rod 311. The adjustment block 312 is fixedly connected to the second pipe 2. The auxiliary blocks 310, limit rods 311, and adjustment blocks 312 can make the filter screen 309 more stable and prevent the filter screen 309 from shaking. An anti-slip sleeve 313 is fixedly connected to the arc surface of the handle 305. The anti-slip sleeve 313 has anti-slip texture. The anti-slip sleeve 313 can increase the friction of the handle 305 and prevent the person from slipping when pulling the handle 305. A limit block 314 is fixedly connected to one end of the fixed rod 302. The limit block 314 has a circular cross section and can limit the pull plate 303 to prevent the pull plate 303 from detaching from the fixed rod 302.
[0033] In the embodiments of this utility model, please refer to Figure 4The auxiliary structure 4 includes a fixing ring 41, which is fixedly connected to the first pipe 1 and the second pipe 2 respectively. Two positioning blocks 42 are fixedly connected to the arc surface of the fixing ring 41. The same positioning rod 43 is slidably connected to the inner wall of the two positioning blocks 42. Two auxiliary plates 44 are fixedly connected to the arc surface of the fixing ring 41. The same screw 45 is threadedly connected to the inner wall of the two auxiliary plates 44. By setting the auxiliary structure 4, the first pipe 1 and the second pipe 2 can be fixedly connected quickly and conveniently, avoiding the cumbersome and time-consuming method of fixing with screws, thus greatly saving the physical strength of personnel. A soft pad 47 is fixedly connected to one side of one of the fixing rings 41. The soft pad 47 is a rubber pad, which can increase the sealing of the fixing ring 41 and prevent water leakage. A guide cone 46 is fixedly connected to one end of the positioning rod 43. Since the guide cone 46 is small in size, the positioning rod 43 can be better inserted into the positioning block 42.
[0034] The working principle of the clean air duct structure for preventing transportation contamination on the inner wall of the air duct provided by this utility model is as follows: By setting the adjustment structure 3, the handle 305 is first moved with the help of the anti-slip sleeve 313, so that the handle 305 drives the pull plate 303 to move on the fixing rod 302 of the fixing block 301. When the pull plate 303 moves, it will drive the spring 304 to stretch. At the same time, the pull plate 303 will also drive the insertion plate 306 to move. Then, the filter screen 309 is moved to drive the positioning plate 308 to move, so that the positioning plate 308 is inserted into the interior of the connecting frame 307. At this time, the handle 305 is released. 05 When released, due to the action of spring 304, insert plate 306 will insert into the interior of connecting frame 307 and positioning plate 308. At this time, the filter screen 309 is fixed. The auxiliary block 310, limit rod 311 and adjusting block 312 can make the filter screen 309 more stable and prevent the filter screen 309 from shaking. The anti-slip sleeve 313 can increase the friction of handle 305 and prevent the person from slipping when pulling handle 305. The limit block 314 can limit the pull plate 303 and prevent the pull plate 303 from detaching from the fixing rod 302.
[0035] By setting the auxiliary structure 4, the first pipe 1 is moved to fit against the second pipe 2. Then, the positioning rod 43 is inserted into the inside of the two positioning blocks 42. Then, the screw 45 is rotated through the inside of the two auxiliary plates 44. At this time, the first pipe 1 and the second pipe 2 are fixed. The soft pad 47 can increase the sealing of the fixing ring 41, thereby preventing water leakage. Since the guide cone 46 has a small volume, the positioning rod 43 can be better inserted into the positioning block 42.
[0036] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.
[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A clean air duct structure with an inner wall protected against transport contamination, characterized in that, include: The system comprises a first pipe (1), a second pipe (2), an adjustment structure (3), and an auxiliary structure (4). The first pipe (1) is fixed to the second pipe (2) by means of the auxiliary structure (4). The inner wall of the second pipe (2) is provided with an adjustment structure (3). The adjustment structure (3) includes a filter screen (309). The filter screen (309) abuts against the second pipe (2). Two fixing blocks (301) are fixedly connected to the arc surface of the second pipe (2). Two fixing rods (302) are fixedly connected to one side of each fixing block (301). The arc surfaces of the two fixing rods (302) are slidably connected to the same pull plate (303). A spring (304) is fitted onto the arc surface of (302). The two ends of the spring (304) are fixedly connected to the fixing block (301) and the pull plate (303) respectively. A handle (305) is fixedly connected to one side of the pull plate (303), and an insert plate (306) is fixedly connected to the other side of the pull plate (303). Two connecting frames (307) are fixedly connected to the arc surface of the second pipe (2). A positioning plate (308) is slidably connected to the inner wall of the connecting frame (307). The positioning plate (308) is fixedly connected to the filter screen (309). The insert plate (306) is slidably connected to the connecting frame (307) and the positioning plate (308) respectively.
2. The clean air duct structure for preventing transportation contamination on the inner wall of the air duct according to claim 1, characterized in that, Two auxiliary blocks (310) are fixedly connected to one side of the filter screen (309). A limit rod (311) is fixedly connected to one side of each of the two auxiliary blocks (310). An adjustment block (312) is slidably connected to the arc surface of the limit rod (311). The adjustment block (312) is fixedly connected to the second pipe (2).
3. The clean air duct structure for preventing transportation contamination on the inner wall of the air duct according to claim 1, characterized in that, The handle (305) has an anti-slip sleeve (313) fixedly connected to its arc surface, and the anti-slip sleeve (313) has anti-slip texture.
4. The clean air duct structure for preventing transportation contamination on the inner wall of the air duct according to claim 1, characterized in that, One end of the fixing rod (302) is fixedly connected to a limiting block (314), and the limiting block (314) has a circular cross-section.
5. A clean air duct structure for preventing transportation contamination on the inner wall of an air duct according to claim 1, characterized in that, The first pipe (1) and the second pipe (2) are provided with auxiliary structures (4) on their arc surfaces. The auxiliary structures (4) include a fixing ring (41). The fixing ring (41) is fixedly connected to the first pipe (1) and the second pipe (2) respectively. The arc surface of the fixing ring (41) is fixedly connected to two positioning blocks (42). The inner walls of the two positioning blocks (42) are slidably connected to the same positioning rod (43). The arc surface of the fixing ring (41) is fixedly connected to two auxiliary plates (44). The inner walls of the two auxiliary plates (44) are threadedly connected to the same screw (45).
6. A clean air duct structure for preventing transportation contamination on the inner wall of an air duct according to claim 5, characterized in that, One of the fixing rings (41) is fixedly connected to a soft pad (47), which is a rubber pad.
7. A clean air duct structure for preventing transportation contamination on the inner wall of an air duct according to claim 5, characterized in that, One end of the positioning rod (43) is fixedly connected to a guide cone (46).
Citation Information
Patent Citations
A clean air duct structure with inner wall of air duct protected from transportation pollution
CN221034613U