Fan air duct sealing fit component
By adopting a multi-position sealing and fitting method in the centrifugal fan, the mating groove and gear structure provide limits for the sealing ring, the problem of irregular deformation caused by extrusion during installation and tightening is solved, and better seal stability and durability are achieved.
Patent Information
- Application Number
- CN202422132703.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The sealing rings of existing centrifugal fans are prone to irregular deformation due to extrusion during installation and fastening, resulting in poor seal stability and durability.
The multi-position sealing and fitting method is adopted, and a special fitting groove and gear structure is set up to provide accurate limits for the sealing ring, ensuring that the sealing ring is extruded safely during the tightening process, forming regular deformation, thereby improving sealing.
It improves the extrusion safety and sealing of the sealing ring during the tightening process, making the sealing stability and durability more reliable, the installation accuracy is higher, and the sealing ring fit and connection during maintenance is also more convenient.
Smart Images
Figure CN223019023U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of centrifugal fan installation components, in particular to a fan air duct sealing and matching component. Background Technique
[0002] When installing a centrifugal fan, a sealing component is usually required for fastening connection between the air duct and the main body structure of the fan. The existing sealing component is of an annular structure. During installation, it is necessary to cooperate with a sealing ring for fitting installation at both ends. The stability of the position of the sealing ring during installation cannot be guaranteed, and it is easy to cause extrusion of the sealing ring during the fastening process, resulting in irregular deformation, and the sealing stability cannot be guaranteed. During maintenance, it is very difficult to accurately fit and place the sealing ring after disassembly and assembly, resulting in poor sealing durability during later use. Content of the Utility Model
[0003] The purpose of the utility model is to provide a fan air duct sealing and matching component. Its main structure is connected by a multi-position sealing and matching method. The sealing and matching positions are provided with special matching grooves and blocking structures, which can provide accurate limit for the sealing ring during installation, ensure better extrusion safety of the sealing ring during fastening, enable regular deformation to be generated, make the sealing performance better, and the fitting connection and installation of the sealing ring are also more convenient during later maintenance, with better installation accuracy and more reliable overall sealing stability during later use.
[0004] The technical solution of the utility model is as follows:
[0005] A fan air duct sealing and matching component includes a cylindrical main body fitting connection column. An integrally formed cylindrical installation stop combination column is provided at the lower end of the main body fitting connection column. It is characterized in that: an installation seal fitting placement groove is provided at the central position of the lower end of the installation stop combination column, a seal transition fitting groove is provided at the upper end of the installation seal fitting placement groove, a cylindrical seal fitting connection groove with the same central axis and a diameter larger than that of the seal transition fitting groove is provided at the upper end of the seal transition fitting groove, circumferentially uniformly distributed seal limit fitting blocking pieces are provided at the position near the central axis on the upper end surface of the seal fitting connection groove, a main body air duct hole communicating with the seal fitting connection groove is provided at the upper end of the main body fitting connection column, and an external seal fitting connection groove is provided on the outer cylindrical surface of the installation stop combination column.
[0006] Further, the seal limit fitting blocking piece is of an arc-shaped structure and has the same central axis as the central axis of the main body fitting connection column.
[0007] Further, the cross-section of the external seal fitting connection groove is of an arc-shaped structure.
[0008] Further, the depth of the installation and sealing fitting placement groove is greater than half of the thickness of the installation stop combination column.
[0009] Further, an installation combination convenient chamfer structure is provided at the outer edge position of the upper end of the main body fitting connection column.
[0010] The beneficial effects of the present utility model:
[0011] The main body structure of the present utility model adopts a multi-position sealing and fitting method for fitting connection. The sealing and fitting positions are provided with special fitting grooves and blocking structures, which can provide precise limit for the sealing ring during installation, ensure better extrusion safety of the sealing ring during tightening, enable regular deformation to make the sealing better, and make the fitting connection and installation of the sealing ring more convenient during later maintenance, with better installation accuracy and more reliable overall sealing stability during later use. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;
[0013] Figure 2 is a front view schematic diagram of the present utility model;
[0014] Figure 3 is a side view schematic diagram of the present utility model;
[0015] Figure 4 is a cross-sectional schematic diagram of the A-A position of the present utility model;
[0016] Figure 5 is a top view schematic diagram of the present utility model;
[0017] Figure 6 is a bottom view schematic diagram of the present utility model;
[0018] Figure 7 is a three-dimensional structure schematic diagram of the present utility model in the second direction;
[0019] In the figure: 1, main body fitting connection column; 2, installation stop combination column; 3, installation and sealing fitting placement groove; 4, sealing fitting connection groove; 5, sealing limit fitting flap; 6, main body air duct hole; 7, external sealing fitting connection groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] Such as Figures 1 to 7As shown in the figure, a sealing and mating component for a fan air duct includes a cylindrical main body mating connection column 1. At the lower end of the main body mating connection column 1, there is an integrally formed cylindrical installation stop combination column 2. At the center position of the lower end of the installation stop combination column 2, there is an installation sealing and mating placement groove 3, and the lower end position is matingly connected with the main structure of the centrifugal fan during installation. It is also combined and connected to the air outlet position of the fan. The upper end of the installation sealing and mating placement groove 3 is provided with a sealing transition mating groove, which can play a role of limiting mating during sealing mating. The upper end of the sealing transition mating groove is provided with a cylindrical sealing mating connection groove 4 with the same central axis and a diameter larger than that of the sealing transition mating groove. During internal installation, the sealing ring can be mated at this position. At the position near the central axis on the upper end face of the sealing mating connection groove 4, there are circumferentially evenly distributed sealing limit mating flanges 5, which can prevent the sealing ring from generating irregular deformation towards the central position during the installation and fastening process, can play a role of limiting mating for the assembly of the sealing ring, and at the same time can ensure better position stability of the sealing ring. The upper end of the main body mating connection column 1 is provided with a main body air duct hole 6 communicating with the sealing mating connection groove 4. On the outer cylindrical surface of the installation stop combination column 2, there is an external sealing mating connection groove 7, which can be sealingly combined with the structure at the outer mating position with a sealing ring as required. Its main structure is combined and connected in a multi-position sealing mating manner. The sealing mating positions are provided with special mating grooves and blocking structures, which can provide precise limitation for the sealing ring during installation, ensure better extrusion safety of the sealing ring during fastening, can generate regular deformation, make the sealing performance better, and it is also more convenient for the mating connection installation of the sealing ring during later maintenance, with better installation accuracy and more reliable overall sealing stability during later use.
[0021] Preferably, the sealing limit mating flange 5 is in an arc-shaped structure, and the central axis is the same as that of the main body mating connection column 1, which has better combination tightness during mating, can further improve the mating stability with the sealing ring, and has a larger contact area during mating.
[0022] Preferably, the cross-section of the external sealing mating connection groove 7 is in an arc-shaped structure, which is more convenient for production and processing. This position can also be set in other structural forms, such as a square structure, etc.
[0023] Preferably, the depth of the installation sealing and mating placement groove 3 is greater than half of the thickness of the installation stop combination column 2, so as to have better mating stability when the lower end position is combined with the main structure of the fan.
[0024] Preferably, at the outer edge position of the upper end of the main body mating connection column 1, there is an installation combination convenient chamfer structure, which makes the combination operation during installation and mating more convenient and can be inserted and combined with the pipeline of the fan more smoothly.
[0025] The above are the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements or substitutions can be made, and these improvements or substitutions should also be regarded as the protection scope of the present utility model.
Claims
1. A fan duct sealing mating component, comprising a cylindrical main body mating connecting column (1), wherein the lower end of the main body mating connecting column (1) is provided with an integrally formed cylindrical mounting stop assembly column (2), characterized in that: A sealing fitting placement groove (3) is provided at the center of the lower end of the installation stop assembly column (2); a sealing transition fitting groove is provided at the upper end of the installation stop assembly column (3); a cylindrical sealing fitting connection groove (4) having the same central axis and a diameter greater than the diameter of the sealing transition fitting groove is provided at the upper end of the sealing transition fitting groove; a sealing limit fitting baffle (5) evenly distributed around the circumference is provided at a position close to the central axis of the upper end surface of the sealing fitting connection groove (4); a main air duct hole (6) communicating with the sealing fitting connection groove (4) is provided at the upper end of the main body fitting connection column (1); and an external sealing fitting connection groove (7) is provided on the outer cylindrical surface of the installation stop assembly column (2).
2. A fan duct sealing matching component according to claim 1, characterized in that: The sealing limit matching baffle (5) is an arc-shaped structure, and its central axis is the same as the central axis of the main body matching connecting column (1).
3. A fan duct sealing matching component according to claim 1, characterized in that: The cross-section of the external sealing matching connection groove (7) is an arc-shaped structure.
4. A fan duct sealing matching component according to claim 1, characterized in that: The depth of the installation seal matching placement groove (3) is greater than half the thickness of the installation stop assembly column (2).
5. A fan duct sealing matching component according to claim 1, characterized in that: The outer edge of the upper end of the main body and the connecting column (1) is provided with a convenient chamfering structure for assembly and installation.