Taper sleeve type impeller mounting shaft disc, impeller and fan comprising same

Abstract

The invention discloses a taper sleeve type impeller mounting shaft disc, an impeller and a fan comprising the same, and relates to the technical field of ventilation equipment. The shaft disc main body is provided with a central through hole and a mounting part for mounting an impeller; the taper sleeve is sleeved in a central through hole of the shaft disc main body, and an inner hole of the taper sleeve is a through hole for a fan shaft or a motor shaft to penetrate through; the outer wall of the taper sleeve is in taper fit with the inner wall of the central through hole of the shaft disc main body; at least one group of matching holes are correspondingly formed in the shaft disc main body and the taper sleeve, each group of matching holes comprises two half holes which are respectively formed in the shaft disc main body and the taper sleeve, and when the shaft disc main body is aligned with the taper sleeve, the two half holes are aligned to form a complete mounting hole or dismounting hole. The shaft disc is divided into the shaft disc main body and the taper sleeve, so that the shaft disc main body can realize standardized batch production, the shaft disc can adapt to various shaft diameters only by replacing taper sleeves with different inner diameters, the universality of parts is greatly improved, and the production cost and the inventory pressure are reduced.

Description

Technical Field

[0001] This invention relates to the field of ventilation equipment technology, and in particular to a conical sleeve impeller mounting shaft disc, an impeller, and a fan containing the same. Background Technology

[0002] Currently, impeller installation typically employs an integrated shaft disc structure, where the shaft disc and bushing are integrally cast or welded. This structure presents significant drawbacks in actual assembly: the impeller must be inserted from the shaft end and pushed to the middle mounting position. Since the shaft disc's bore and the fan shaft usually use a transition fit, if the fit is too loose, it can easily cause abnormal noise and wear due to slight movements during fan start-up and shutdown; if the fit is too tight, assembly becomes difficult, especially for long, smooth shafts, making installation and disassembly extremely inconvenient. Furthermore, integrated shaft discs require different specifications designed for different shaft diameters, resulting in poor parts versatility, a large variety of inventory items, and increased production costs.

[0003] Therefore, there is an urgent need in the existing technology for an impeller mounting shaft disk structure that can adapt to different shaft diameters, has reliable connections, and is easy to standardize production. Summary of the Invention

[0004] The purpose of this invention is to provide a conical sleeve impeller mounting shaft disk, impeller, and fan containing the same, so as to solve the problems existing in the prior art, which can adapt to different shaft diameters, have reliable connection, and facilitate standardized production.

[0005] To achieve the above objectives, the present invention provides the following solution: A conical sleeve impeller mounting shaft disc includes a shaft disc body and a conical sleeve; the shaft disc body has a central through hole and a mounting portion for mounting an impeller; the conical sleeve is fitted inside the central through hole of the shaft disc body, and its inner hole is a through hole for passing through a fan shaft or a motor shaft; the outer wall of the conical sleeve is taperedly fitted to the inner wall of the central through hole of the shaft disc body; at least one set of mating holes are correspondingly provided on the shaft disc body and the conical sleeve, each set of mating holes including two half holes located on the shaft disc body and the conical sleeve respectively, and when the shaft disc body and the conical sleeve are aligned, the two half holes are aligned to form a complete mounting hole or disassembly hole.

[0006] In an exemplary embodiment, the mating hole includes two sets of mounting holes and one set of disassembly holes; the two sets of mounting holes are symmetrically arranged; the disassembly hole is located between the two sets of mounting holes; in each set of mounting holes, the half-hole on the tapered sleeve is a smooth hole, and the half-hole on the shaft disc body is a threaded hole; in the disassembly hole, the half-hole on the tapered sleeve is a threaded hole, and the half-hole on the shaft disc body is a smooth hole.

[0007] In an exemplary embodiment, the smooth hole is a blind hole, and the threaded hole is a through hole; the opening end of the blind hole is located at the end with the larger diameter of the tapered sleeve; the mounting hole is used to screw in a set screw, and the axial clamping between the shaft disc body and the tapered sleeve is achieved by the screw pressing against the bottom of the smooth hole; the disassembly hole is used to screw in a disassembly screw, and the tapered sleeve is separated from the shaft disc body by the screw being screwed in.

[0008] In an exemplary embodiment, the tapered sleeve has a through groove along the axial direction, giving the tapered sleeve radial elasticity.

[0009] In an exemplary embodiment, the mounting portion of the shaft disk body consists of a plurality of blade mounting lugs distributed circumferentially for fixing the impeller.

[0010] The present invention also provides an impeller, including the above-described conical sleeve impeller mounting shaft disk, and an impeller mounted on the mounting shaft disk.

[0011] In an exemplary embodiment, the impeller is fixed to the mounting portion of the shaft disk body by fasteners or welding.

[0012] The present invention also provides a fan, including a motor, a fan shaft and the aforementioned impeller; the fan shaft is connected to the output shaft of the motor, and the impeller is sleeved and fixed on the fan shaft through the inner hole of its tapered sleeve.

[0013] In one exemplary embodiment, the tool is further included for elastically opening the conical sleeve to facilitate disassembly and assembly. The tool head is flat and can be inserted into the through groove of the conical sleeve.

[0014] In an exemplary embodiment, the fan shaft is an optical axis, and the impeller can be installed at any position along the axial direction of the fan shaft.

[0015] The present invention achieves the following technical effects compared to the prior art: 1. Split-type modular design: The shaft disc is divided into two parts: the shaft disc body and the tapered sleeve. This allows the shaft disc body to be mass-produced in a standardized manner. By simply changing the tapered sleeve with different inner diameters, it can adapt to various shaft diameters, greatly improving the versatility of parts and reducing production costs and inventory pressure.

[0016] 2. Tapered fit structure: The outer wall of the tapered sleeve and the inner wall of the central through hole of the shaft disc body adopt a tapered fit, which has a self-locking function to ensure a firm connection during the operation of the fan, avoid loosening or abnormal noise due to vibration, and improve the reliability of transmission.

[0017] 3. Detachable mating hole design: The mounting and disassembly holes formed by aligning the half-holes on the shaft disc body and the tapered sleeve can be quickly assembled and separated with screws, greatly improving the convenience of installation and maintenance, and is especially suitable for installation in the middle section of long shafts. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of the cone-sleeve impeller mounting shaft disk disclosed in a specific embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the main structure of the central axis disk; Figure 3 for Figure 1 Schematic diagram of the middle conical sleeve; Figure 4 for Figure 1 A sectional view; Figure 5 A schematic diagram of the structure of the tapered sleeve impeller mounting shaft disk disclosed in another specific embodiment of the present invention; Figure 6 for Figure 5 A schematic diagram of the main structure of the central axis disk; Figure 7 This is a schematic diagram of the impeller structure disclosed in a specific embodiment of the present invention; Figure 8 A schematic diagram of the impeller structure disclosed in another specific embodiment of the present invention; Among them, 100 is the main body of the shaft disk; 101 is the central through hole; 102 is the mounting part; 102a is the blade mounting ear; 102b is the impeller mounting hole; 103 is the threaded half hole; 104 is the smooth half hole; 200 is the tapered sleeve; 201 is the inner hole; 202 is the smooth half hole; 203 is the threaded half hole; 300 is the axial flow blade; and 400 is the centrifugal impeller. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] The purpose of this invention is to provide a conical sleeve impeller mounting shaft disk, impeller, and fan containing the same, to solve the problems existing in the prior art, which can adapt to different shaft diameters, provide reliable connection, and facilitate standardized production.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1 Please refer to Figures 1 to 6 This embodiment provides a tapered sleeve type impeller mounting shaft disk, including a shaft disk body 100 and a tapered sleeve 200.

[0024] The shaft disk body 100 is the basic component of the mounting structure, having a central through hole 101 and a mounting portion 102 for mounting the impeller. Here, "impeller" is a broader functional concept, generally referring to the core rotating component in a fan used to propel fluid; its specific form can be an axial flow impeller, a centrifugal impeller, a mixed flow impeller, etc. The inner wall of the central through hole 101 is machined into a tapered shape. The mounting portion 102 can take the form of various structures mature in the art; for example, a common and preferred embodiment is as follows: Figure 2 As shown, multiple blade mounting ears 102a are evenly distributed circumferentially along the shaft disk body 100. Each mounting ear 102a has a threaded hole for easy fixing of the axial flow blades 300 with bolts. Another common embodiment is as follows... Figure 6 As shown, multiple impeller mounting holes 102b are evenly distributed around the circumference of the shaft disk body 100, facilitating the fixing of the centrifugal impeller 400 with bolts. Of course, the impeller can also be fixed to the mounting part 102 by other mature fastening methods such as welding, which are existing mature technologies and will not be described in detail here.

[0025] The tapered sleeve 200 is a key component connecting the shaft disc body 100 and the drive shaft. Its outer wall is machined with a taper that matches the inner wall of the central through hole 101 of the shaft disc body 100, allowing the tapered sleeve 200 to fit tightly into the shaft disc body 100, forming a tapered fit. This tapered fit not only provides high-precision alignment but also, due to its self-locking characteristic, resists axial force without additional tightening, ensuring the initial reliability of the transmission connection. The inner hole 201 of the tapered sleeve 200 is a through hole for the fan shaft or motor shaft to pass through. This inner hole 201 can be designed as a smooth hole or have a keyway to engage with the key on the drive shaft to transmit torque, a mature and conventional design in mechanical transmission to prevent circumferential rotation.

[0026] To achieve detachable fastening and separation between the shaft disc body 100 and the tapered sleeve 200, mating holes are provided at corresponding positions on both. Specifically, corresponding half-holes are machined on the mating end faces of the shaft disc body 100 and the tapered sleeve 200. When the two are fully aligned, these half-holes pair up to form a complete hole. In a preferred embodiment, the structure is further refined as follows: three sets of mating holes are provided, including two sets of symmetrically arranged mounting holes and one set of disassembly holes located between them. Specifically, each mounting hole is formed by aligning a smooth half-hole 202 on the tapered sleeve 200 with a threaded half-hole 103 on the shaft disc body 100; while the disassembly hole is formed by aligning a threaded half-hole 203 on the tapered sleeve 200 with a smooth half-hole 104 on the shaft disc body 100. Here, "smooth hole" refers to a hole without internal threads, and "threaded hole" refers to a hole with internal threads.

[0027] Regarding the structural details of the holes, a preferred embodiment is as follows: the smooth half-holes (202, 104) are all blind holes, and their opening ends are all located at the end with the larger diameter of the tapered sleeve 200 (i.e., the end near the entrance of the mounting screw). The threaded half-holes (103, 203) are through holes. This design allows the installation and disassembly process to operate based on the simple screw-nut principle. During assembly, two set screws are screwed into the threaded half-holes 103 of the two mounting holes respectively. As the screws are screwed in, their ends will abut against the bottom of the opposite smooth half-hole 202. Continue tightening the screws; since the threaded half-hole 103 is fixed to the shaft disc body 100, the axial movement of the screws generates a reaction force, forcing the shaft disc body 100 to move relative to the tapered sleeve 200 towards the smaller end of the tapered sleeve, thereby making the tapered surfaces of the two increasingly tighter, achieving final locking. During disassembly, first loosen and remove the two set screws 400, then screw a disassembly screw into the threaded half-hole 203 of the disassembly hole. When the end of the disassembly screw abuts against the bottom of the opposite smooth half-hole 104, and continues to screw it in, it will push the tapered sleeve 200 relative to the shaft disc body 100 towards the larger end of the tapered sleeve, thereby separating the tapered surfaces of the two and making disassembly easy.

[0028] Furthermore, to facilitate the installation of the tapered sleeve 200 onto the drive shaft, especially when the impeller needs to be installed in the middle of a long optical shaft, at least one through groove 204 can be made axially on the wall of the tapered sleeve 200. This through groove 204 gives the tapered sleeve 200 a certain degree of radial elasticity. During installation, a simple tool with a flat head (such as a flathead screwdriver) can be inserted into this groove, and gently prying it will cause a slight elastic expansion of the inner hole 201 of the tapered sleeve, thereby easily sliding the tapered sleeve 200 to any target position on the drive shaft. After releasing the tool, the tapered sleeve 200 returns to its original shape and clamps the shaft, making the operation extremely simple.

[0029] Example 2 This embodiment provides an impeller, including the conical sleeve type impeller mounting shaft disk as described in Embodiment 1, and multiple axial flow blades 300 mounted on the mounting portion 102 of the shaft disk body 100 by bolts or other fasteners or welding (e.g., ...). Figure 7 (as shown) or centrifugal impeller 400 (e.g.) Figure 8 (As shown). The impeller module thus constructed has the core advantages of being easy to install on the shaft, adjust its position, and disassemble for maintenance.

[0030] Example 3 This embodiment provides a fan, including a motor, a fan shaft driven by the motor, and an impeller as described in Embodiment 2, mounted thereon. The impeller is sleeved on the fan shaft through the inner hole 201 of its tapered sleeve 200, and transmits torque through the tapered sleeve 200 locking with the tapered surface of the shaft disc body 100 and possible key connections.

[0031] The fan in this embodiment is particularly suitable for the following scenarios: when the fan shaft is an optical shaft, due to the elastic design of the cone sleeve 200 and its separate adjustable characteristics with the shaft disc body 100, the impeller can be conveniently installed at any desired position in the optical shaft axis, which greatly improves the flexibility of fan design and adaptability of on-site installation.

[0032] To facilitate operation, a special tool can be provided with a flat wedge-shaped head, which is specifically designed to be inserted into the through groove 204 of the cone sleeve 200, so as to safely and effortlessly open the cone sleeve 200 for installation or removal.

[0033] In summary, this invention decouples the functions of the traditional integrated shaft disc through a modular design of the "shaft disc body - cone sleeve". The shaft disc body can be fully standardized and mass-produced; while the cone sleeve, as an adaptable accessory, only needs to be varied according to different drive shaft diameters, significantly reducing the types of parts in stock and costs. The tapered fit provides a reliable self-locking connection, while the unique "half-hole-screw" fastening / disassembly mechanism utilizes simple mechanical principles to achieve quick and secure connection and separation between the two. The through-groove design on the cone sleeve cleverly solves the problem of installing and moving components on the optical shaft. Ultimately, these features combined layer by layer enable the entire impeller to achieve unprecedented installation flexibility, maintenance convenience, and component versatility while ensuring connection strength and transmission accuracy, making it particularly suitable for industrial fan applications requiring frequent maintenance or customized installations.

[0034] In the description of this invention, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention, and do not imply or require that the device or element referred to must have a specific orientation or construction method, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish the objects of description and should not be construed as limiting importance or order, and the features defined by such terms may explicitly or implicitly include one or more of those features. Unless otherwise stated, "a plurality of" in the description of this invention refers to two or more.

[0035] The terms "installation," "connection," and "joining" should be interpreted broadly, unless otherwise explicitly defined, to include, but are not limited to, fixed connections, detachable connections, or integrally formed connections; mechanical or electrical connections; direct connections or indirect connections via an intermediate medium; and internal communication between two components. Those skilled in the art can understand their meaning based on the specific technical solution. The fixed connections involved in this invention, unless otherwise stated, include both detachable fixed connections (such as bolt and screw connections) and non-detachable fixed connections (such as riveting and welding), and may also include integral structures achieved through an integral forming process (such as casting) (except where integral forming is clearly not feasible).

[0036] Unless otherwise stated, the terms used in any of the technical solutions disclosed in this invention to indicate positional relationships or shapes cover states or shapes that are similar to, close to, or adjacent to them.

[0037] Any component provided by this invention can be assembled from multiple individual components or can be a single component manufactured using a one-piece molding process.

[0038] It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are only used to complement the content disclosed in the specification, so as to enable those skilled in the art to understand and read them, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0039] In the embodiments of this application, the same reference numerals are used to denote the same component or part.

[0040] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0041] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cone-sleeve type impeller mounting shaft disc, characterized in that: The device includes a shaft disc body and a tapered sleeve. The shaft disc body has a central through hole and a mounting portion for mounting an impeller. The tapered sleeve is fitted inside the central through hole of the shaft disc body, and its inner hole is a through hole for passing through a fan shaft or a motor shaft. The outer wall of the tapered sleeve is taperedly fitted to the inner wall of the central through hole of the shaft disc body. At least one set of mating holes are correspondingly provided on the shaft disc body and the tapered sleeve. Each set of mating holes includes two half holes located on the shaft disc body and the tapered sleeve, respectively. When the shaft disc body and the tapered sleeve are aligned, the two half holes are aligned to form a complete mounting hole or disassembly hole.

2. The conical sleeve type impeller mounting shaft disc according to claim 1, characterized in that: The mating holes include two sets of mounting holes and one set of disassembly holes; the two sets of mounting holes are symmetrically arranged; the disassembly holes are located between the two sets of mounting holes; in each set of mounting holes, the half-hole on the tapered sleeve is a smooth hole, and the half-hole on the shaft disc body is a threaded hole; in the disassembly holes, the half-hole on the tapered sleeve is a threaded hole, and the half-hole on the shaft disc body is a smooth hole.

3. The conical sleeve impeller mounting shaft disc according to claim 2, characterized in that: The smooth hole is a blind hole, and the threaded hole is a through hole; the opening end of the blind hole is located at the end with the larger diameter of the tapered sleeve; the mounting hole is used to screw in a set screw, and the axial clamping between the shaft disc body and the tapered sleeve is achieved by the screw pressing against the bottom of the smooth hole; the disassembly hole is used to screw in a disassembly screw, and the tapered sleeve is separated from the shaft disc body by the screw being screwed in.

4. The conical sleeve type impeller mounting shaft disc according to claim 1, characterized in that: The tapered sleeve has a through groove along the axial direction, which gives the tapered sleeve radial elasticity.

5. The conical sleeve impeller mounting shaft disc according to claim 1, characterized in that: The mounting portion of the shaft disk body consists of multiple blade mounting lugs distributed circumferentially for fixing the impeller.

6. An impeller, characterized in that: It includes the conical sleeve impeller mounting shaft disk as described in any one of claims 1-5, and the impeller mounted on the mounting shaft disk.

7. The impeller according to claim 6, characterized in that: The impeller is fixed to the mounting part of the shaft disk body by fasteners or welding.

8. A fan, characterized in that: It includes a motor, a fan shaft, and the impeller as described in claim 6 or 7; the fan shaft is connected to the output shaft of the motor, and the impeller is fitted and fixed to the fan shaft through the inner hole of its tapered sleeve.

9. The fan according to claim 8, characterized in that: It also includes a tool for elastically opening the conical sleeve to facilitate disassembly and assembly, the tool having a flat head that can be inserted into the through groove of the conical sleeve.

10. The fan according to claim 8, characterized in that: The fan shaft is an optical shaft, and the impeller can be installed at any position along the axial direction of the fan shaft.

Images