Wedge-shaped fan cover
By designing a detachable wedge-shaped fan cover, and utilizing a slider groove connection and anti-reverse plate structure, the problems of difficult installation and high transportation costs of existing wedge-shaped fan covers are solved, achieving the effects of rapid installation, disassembly, and dust filtration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGMEISHENG PRECISION MASCH TECH (KUNSHAN) CO LTD
- Filing Date
- 2025-11-05
- Publication Date
- 2026-07-07
AI Technical Summary
Existing wedge-shaped fan covers are costly and laborious to install and transport, and are difficult to disassemble and install quickly.
A detachable wedge-shaped fan cover was designed. The cover can be quickly installed and removed by sliding connection between the slider and the groove. The cover is connected to the guide component through the connecting cylinder. Combined with the reversible anti-backflow plate and multiple dustproof holes, it ensures the unique flow direction of airflow and dust filtration.
It enables quick installation and disassembly of the wedge-shaped fan cover, facilitating transportation while effectively preventing dust adsorption and airflow backflow, thus keeping the interior clean.
Smart Images

Figure CN224469371U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fan cover technology, and more specifically, to a wedge-shaped fan cover. Background Technology
[0002] A wedge-shaped fan cover is an air guiding and protective device installed at the air inlet or outlet of a fan. Its core feature lies in its unique wedge-shaped or triangular cross-section, which allows it to guide airflow more efficiently and smoothly, reducing eddies and pressure loss compared to traditional cylindrical or box-shaped fan covers. However, most existing wedge-shaped fan covers are manufactured as a single piece, resulting in higher costs during installation and transportation, and more laborious installation. Utility Model Content
[0003] To overcome the shortcomings of the existing technology, this utility model provides a wedge-shaped fan cover, which has the advantages of being detachable for transportation and easy to install.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a wedge-shaped fan cover, comprising: a connecting assembly, a guide assembly fixedly installed at the bottom of the connecting assembly, a connecting block fixedly installed on the front left side of the guide assembly, a first sliding groove opened inside the connecting block, a first slider slidably connected inside the first sliding groove, and a cover body fixedly installed outside the first slider body; a connecting cylinder, the connecting cylinder located inside the cover body, the inside of the connecting cylinder fitting against the guide assembly, and a sealing ring fixedly installed at one end of the connecting cylinder near the cover body, the sealing ring fitting against the cover body.
[0005] The beneficial effects of adopting the above technical solution are as follows: When the device needs to be assembled, the cover is first installed by sliding the first slider and the first slide groove, so that the cover is quickly installed on the left side of the guide assembly. At the same time, since the length of the first slider and the length of the first slide groove are matched, the installation is just right. Then, the connecting cylinder passes through the inside of the cover, so that the connecting cylinder connects the cover and the guide assembly, achieving the effect of quick installation. At the same time, since the cover and the guide assembly can be disassembled, it is convenient for transportation.
[0006] As a preferred embodiment of this utility model, the inside of the cover is provided with a second sliding groove, the inside of the second sliding groove is slidably connected with a second slider, the inside of the second slider is fixedly installed with a filter plate, and the inside of the filter plate is provided with dustproof holes.
[0007] The beneficial effects of adopting the above technical solution are: the filter plate is quickly installed into the inside of the cover through the sliding connection between the second slider and the second slide groove. At the same time, the second slider and the second slide groove are positioned so that when the cover is working, the filter plate will filter the external dust, thereby preventing the adsorption of dust.
[0008] As a preferred embodiment of this utility model, the second slider has a bolt engaged internally, and the bolt engages with the cover.
[0009] The beneficial effect of adopting the above technical solution is that the bolt engages with the second slider and passes through the second slider to engage with the cover, thereby fixing the second slider and achieving the effect of fixing the filter plate inside the cover.
[0010] As a preferred embodiment of this utility model, a fixed shaft is fixedly installed inside the connecting assembly, and a backstop plate is rotatably connected to the outside of the fixed shaft, with the backstop plate located inside the connecting assembly.
[0011] The beneficial effects of adopting the above technical solution are: the anti-reverse plate can only rotate counterclockwise. When the fan blows out air, the air will squeeze the lower left side of the anti-reverse plate and discharge it from the left side of the anti-reverse plate. When the fan stops, the anti-reverse plate will reset with gravity, thereby preventing the external airflow from flowing back.
[0012] As a preferred embodiment of this utility model, a limiting structure is installed at the bottom of the anti-reverse plate. The limiting structure is located inside the connecting assembly and on the left side of the anti-reverse plate.
[0013] The beneficial effect of adopting the above technical solution is that the limiting structure can effectively limit the anti-reverse plate and prevent the anti-reverse plate from rotating clockwise.
[0014] As a preferred embodiment of this utility model, there are multiple dustproof holes, all of which are located inside the cover and at the bottom of the connecting cylinder.
[0015] The beneficial effects of adopting the above technical solution are: multiple dustproof holes, while ensuring normal air permeability, filter out dust and debris, keeping the inside of the cover and guide components clean.
[0016] As a preferred embodiment of this utility model, there are two second sliding grooves and two second sliding blocks, and both the two second sliding grooves and the two second sliding blocks are located inside the cover.
[0017] The beneficial effect of adopting the above technical solution is that the cover is slidably connected to the two second slides and the two second slide grooves respectively, so that the cover can be easily disassembled and cleaned in the future.
[0018] In a preferred embodiment of this utility model, the bottom of the guide component is sealed, the connecting cylinder is cylindrical, and the connecting cylinder is connected to the guide component.
[0019] The beneficial effect of adopting the above technical solution is that when the bottom of the guide component is sealed, the airflow passing through the inside of the guide component can only be discharged outward through the connecting cylinder, thereby achieving the uniqueness of the airflow direction. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A;
[0022] Figure 3 This is a schematic diagram of the filter plate structure of this utility model;
[0023] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point B;
[0024] Figure 5 This is a schematic diagram of the anti-reverse plate structure of this utility model.
[0025] In the figure: 1. Connecting component; 2. Guide component; 3. Connecting block; 4. First slide groove; 5. First slider; 6. Cover; 7. Connecting cylinder; 8. Sealing ring; 9. Second slide groove; 10. Second slider; 11. Filter plate; 12. Dustproof hole; 13. Bolt; 14. Fixed shaft; 15. Anti-reverse plate. Detailed Implementation
[0026] 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.
[0027] like Figures 1 to 5As shown, this utility model provides a wedge-shaped fan cover, including: a connecting component 1, a guide component 2 fixedly installed at the bottom of the connecting component 1, a connecting block 3 fixedly installed on the front left side of the guide component 2, a first sliding groove 4 opened inside the connecting block 3, a first slider 5 slidably connected inside the first sliding groove 4, and a cover body 6 fixedly installed on the outside of the first slider 5; a connecting cylinder 7, the connecting cylinder 7 is located inside the cover body 6, the inside of the connecting cylinder 7 is in contact with the guide component 2, and a sealing ring 8 is fixedly installed at one end of the connecting cylinder 7 near the cover body 6, the sealing ring 8 is in contact with the cover body 6.
[0028] The beneficial effects of adopting the above technical solution are as follows: When the device needs to be assembled, the cover 6 is first installed by the sliding connection between the first slider 5 and the first slide groove 4, so that the cover 6 is quickly installed on the left side of the guide component 2. At the same time, since the length of the first slider 5 is matched with the length of the first slide groove 4, the effect of just being installed in place is achieved. Then, the connecting cylinder 7 passes through the inside of the cover 6, so that the connecting cylinder 7 connects the cover 6 and the guide component 2, achieving the effect of quick installation. At the same time, since the cover 6 and the guide component 2 can be disassembled, it is convenient for transportation.
[0029] The cover 6 has a second sliding groove 9 inside, and a second slider 10 is slidably connected inside the second sliding groove 9. A filter plate 11 is fixedly installed on the inner side of the second slider 10, and a dustproof hole 12 is opened inside the filter plate 11.
[0030] The beneficial effects of adopting the above technical solution are: the filter plate 11 is quickly installed into the inside of the cover 6 through the sliding connection between the second slider 10 and the second slide groove 9. At the same time, the second slider 10 and the second slide groove 9 are positioned so that when the cover 6 is working, the filter plate 11 will filter the external dust, thereby preventing the adsorption of dust.
[0031] The second slider 10 has a bolt 13 inside, which engages with the cover 6.
[0032] The beneficial effect of adopting the above technical solution is that the bolt 13 engages with the second slider 10 and passes through the second slider 10 to engage with the cover 6, thereby fixing the second slider 10 and achieving the effect of fixing the filter plate 11 inside the cover 6.
[0033] The connecting assembly 1 has a fixed shaft 14 fixedly installed inside, and a check plate 15 is rotatably connected to the outside of the fixed shaft 14. The check plate 15 is located inside the connecting assembly 1.
[0034] The beneficial effects of adopting the above technical solution are: the anti-reverse plate 15 can only rotate counterclockwise. When the fan blows out air, the air will squeeze the lower left side of the anti-reverse plate 15 and discharge from the left side of the anti-reverse plate 15. When the fan stops, the anti-reverse plate 15 will reset with gravity, thereby preventing the external airflow from flowing back.
[0035] The bottom of the anti-reverse plate 15 is equipped with a limiting structure, which is located inside the connecting component 1 and on the left side of the anti-reverse plate 15.
[0036] The beneficial effect of adopting the above technical solution is that the limiting structure can effectively limit the anti-reverse plate 15 and prevent the anti-reverse plate 15 from rotating clockwise.
[0037] There are multiple dustproof holes 12, all of which are located inside the cover 6 and at the bottom of the connecting cylinder 7.
[0038] The beneficial effects of adopting the above technical solution are: multiple dustproof holes 12 filter out dust and debris while ensuring normal air permeability, thus keeping the interior of the cover 6 and the guide assembly 2 clean.
[0039] There are two of each of the second slide groove 9 and the second slider 10, and both the two second slide grooves 9 and the two second sliders 10 are located inside the cover 6.
[0040] The beneficial effect of adopting the above technical solution is that the cover 6 is slidably connected to the two second slide grooves 9 through the two second sliders 10, thereby making the cover 6 easy to disassemble and easy to clean later.
[0041] The bottom of the guide component 2 is sealed, and the connecting cylinder 7 is cylindrical and connected to the guide component 2.
[0042] The beneficial effect of adopting the above technical solution is that when the bottom of the guide component 2 is sealed, the airflow passing through the inside of the guide component 2 can only be discharged outward through the connecting cylinder 7, thereby achieving the uniqueness of the airflow direction.
[0043] Working principle and usage process of this utility model:
[0044] Firstly, a first groove 4 is provided inside the connecting block 3, and a first slider 5 is slidably connected inside the first groove 4. A cover 6 is fixedly installed on the outside of the first slider 5 and fits against the guide component 2 inside the connecting cylinder 7. A sealing ring 8 is fixedly installed at one end of the connecting cylinder 7 near the cover 6, and the sealing ring 8 fits against the cover 6. When the device needs to be assembled, the cover 6 is first installed through the sliding connection between the first slider 5 and the first groove 4, so that the cover 6 is quickly installed on the left side of the guide component 2. At the same time, since the length of the first slider 5 matches the length of the first groove 4, the installation effect is achieved. Then, the connecting cylinder 7 passes through the inside of the cover 6, so that the connecting cylinder 7 connects the cover 6 and the guide component 2, achieving the effect of quick installation. At the same time, since the cover 6 and the guide component 2 can be disassembled, it is convenient for transportation.
[0045] Secondly, a second sliding groove 9 is provided inside the cover 6, and a second slider 10 is slidably connected inside the second sliding groove 9. A filter plate 11 is fixedly installed on the inner side of the second slider 10, and a dustproof hole 12 is provided inside the filter plate 11. The filter plate 11 is quickly installed inside the cover 6 through the sliding connection between the second slider 10 and the second sliding groove 9. At the same time, the second slider 10 is positioned with the second sliding groove 9, so that when the cover 6 is working, the filter plate 11 will filter the external dust, thereby preventing the adsorption of dust.
[0046] Finally, a fixed shaft 14 is fixedly installed inside the connecting component 1, and a backflow preventer 15 is rotatably connected to the outside of the fixed shaft 14. Since the backflow preventer 15 can only rotate counterclockwise, when the fan blows out air, the air will squeeze the lower left side of the backflow preventer 15 and discharge it from the left side of the backflow preventer 15. When the fan stops, the backflow preventer 15 will reset due to gravity, thereby preventing the external airflow from flowing back.
[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0048] 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. A wedge-shaped fan cover, characterized in that, include: A connecting component, wherein a guide component is fixedly installed at the bottom of the connecting component, a connecting block is fixedly installed at the front left side of the guide component, a first sliding groove is opened inside the connecting block, a first slider is slidably connected inside the first sliding groove, and a cover is fixedly installed on the outside of the first slider. A connecting cylinder is located inside the cover. The interior of the connecting cylinder is fitted with the guide assembly. A sealing ring is fixedly installed at one end of the connecting cylinder near the cover, and the sealing ring is fitted with the cover.
2. The wedge-shaped fan cover according to claim 1, characterized in that: The cover has a second sliding groove inside, and a second slider is slidably connected inside the second sliding groove. A filter plate is fixedly installed on the inner side of the second slider, and the filter plate has dustproof holes inside.
3. The wedge-shaped fan cover according to claim 2, characterized in that: The second slider has a bolt engaged inside, which engages with the cover.
4. The wedge-shaped fan cover according to claim 1, characterized in that: A fixed shaft is fixedly installed inside the connecting assembly, and a check plate is rotatably connected to the outside of the fixed shaft. The check plate is located inside the connecting assembly.
5. The wedge-shaped fan cover according to claim 4, characterized in that: A limiting structure is installed at the bottom of the anti-reverse plate. The limiting structure is located inside the connecting assembly and on the left side of the anti-reverse plate.
6. The wedge-shaped fan cover according to claim 2, characterized in that: There are multiple dustproof holes, all of which are located inside the cover and at the bottom of the connecting cylinder.
7. The wedge-shaped fan cover according to claim 2, characterized in that: There are two of each of the second slide groove and the second slider, and both of the two second slide grooves and the two second sliders are located inside the cover.
8. The wedge-shaped fan cover according to claim 1, characterized in that: The bottom of the guide assembly is sealed, the connecting cylinder is cylindrical, and the connecting cylinder is connected to the guide assembly.