Axial flow fan impeller with stable dynamic balance
By installing recessed dustproof plates and inner and outer flange structures on both sides of the impeller rotating disk, the problem of dynamic balance damage caused by dust accumulation in the fan is solved, achieving self-cleaning and stable operation of the impeller and reducing maintenance requirements.
Patent Information
- Application Number
- CN202520616817.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-04-02
AI Technical Summary
After prolonged operation, dust accumulation in the fan can disrupt the dynamic balance of the impeller, causing excessive vibration and even structural breakage, thus affecting the efficiency of equipment operation and maintenance.
Dustproof plates with concave circular structures are installed on both sides of the impeller's rotating disk. Centrifugal force is used to throw off the attached dust and dirt, maintaining the dynamic balance and stability of the impeller. The overall rigidity and installation stability are enhanced by the inner and outer flange structures.
It effectively prevents the accumulation of dust and dirt on the inner wall of the impeller, maintains dynamic balance, reduces maintenance frequency, reduces vibration, and improves the stability and service life of the equipment.
Smart Images
Figure CN223881424U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of axial flow fan impeller, concretely relates to a dynamic balance stable axial flow fan impeller. BACKGROUND
[0002] The fan is often caused excessive vibration due to the destruction of the impeller dynamic balance caused by dust accumulation, dirt accumulation and other problems under some severe conditions after long time operation, and even causes structure fracture, failure and other problems, resulting in economic losses. In this case, the fan needs to be regularly balanced, corrected and impeller cleaned, and the post-maintenance and correction work is often more complicated, affecting the work efficiency. In the state without installing the dust plate, the inner wall of the fan is easy to accumulate dust and dirty substances after long time operation, and the accumulation effect shows that one side is more and the other side is less. At this time, the dynamic balance of the fan impeller is destroyed, and the impeller runs in this state to produce large vibration, which harms the equipment operation and causes structure fatigue and other adverse consequences.
[0003] The above content is only used to assist in understanding the technical scheme of the utility model, and does not mean that the above content is prior art. UTILITY MODEL CONTENT
[0004] The main purpose of the utility model is to solve the technical problem that the dynamic balance of the impeller is destroyed due to dust accumulation after long time operation of the fan.
[0005] In order to achieve the above purpose, the utility model provides a dynamic balance stable axial flow fan impeller, which comprises: blades, a rotating disc and a shaft core, the blades are uniformly arranged on the periphery of the rotating disc, the shaft core is used for detachably connecting the rotating disc to the motor shaft,
[0006] The dust plate of the inner concave ring structure is arranged on the two sides of the rotating disc;
[0007] The dust plate is coaxial with the rotating disc, and the convex surface of the dust plate faces the rotating disc.
[0008] Preferably, the rotating disc further comprises an inner flange and an outer flange, and the inner flange sleeve is arranged in the outer flange.
[0009] Preferably, the inner flange comprises a through hole for mounting the dust plate, the inner side of the dust plate on the two sides of the rotating disc is fixed on the inner flange through the through hole by bolts, and the two dust plates share the mounting bolts.
[0010] Preferably, the outer flange comprises a threaded hole for mounting the dust plate on the two sides, and the outer side of the dust plate on the two sides of the rotating disc is mounted on the threaded hole of the outer flange of the rotating disc by bolts.
[0011] Preferably, the blades and the rotating disc jointly form an impeller body which is integrally formed by casting.
[0012] Preferably, the material of the impeller body is an aluminum alloy material.
[0013] Preferably, the shaft core is fixed on the rotating disc by bolts.
[0014] Preferably, the shaft core comprises a key groove and a flange ring for connecting the dynamically balanced axial flow fan impeller and the motor rotating shaft, the key groove is in the center of the flange ring, and the flange ring is provided with corresponding through holes which are fixed on the rotating disc by bolts.
[0015] Preferably, the key groove is processed on the outer cylindrical surface of the shaft, and the motor rotating shaft is provided with a corresponding flat key.
[0016] The dustproof plate with the above structure is mounted on both sides of the impeller body, and the following beneficial effects can be achieved.
[0017] 1. The centrifugal force generated by the concave dustproof plate can throw away the dust and dirt attached to the inner concave inclined surface of the dustproof plate, effectively prevent the accumulation of dust and other dirty substances on the inner wall of the impeller flange, and keep the dynamic balance of the wall surface impeller at a safe level after long-term operation, avoid the increase of vibration caused by dynamic imbalance, damage the device operation, and cause harm.
[0018] 2. The concave dustproof plate with the circular ring structure can form a self-cleaning effect on the dirty substances attached to the inclined surface due to the centrifugal force, so that the dynamic balance of the fan impeller can be maintained in a maintenance-free state.
[0019] 3. The dustproof plate is mounted on the impeller body by bolts, and the structure is simple and reliable. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiment, should understand, the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the range, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.
[0021] Figure 1 It is a structural schematic diagram of an embodiment of the utility model of a dynamically balanced axial flow fan impeller.
[0022] Figure 2 It is Figure 1 It is a structural schematic diagram of an impeller body of a dynamically balanced axial flow fan impeller.
[0023] Figure 3 For Figure 1 Figure 1 is a structural schematic diagram of a dustproof plate of an axial flow fan impeller in dynamic balance stability.
[0024] Impeller body 1
[0025] Blade 10
[0026] Rotary disc 11
[0027] Shaft core 2
[0028] Key groove 21
[0029] Flange ring 22
[0030] Dustproof plate 3
[0031] Inner flange 112
[0032] Outer flange 113
[0033] Mounting screw hole 121
[0034] Through hole 111 DETAILED DESCRIPTION
[0035] In order to better understand the above technical solutions, the exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0036] It should be understood that the specific embodiments described herein are merely intended to explain the present disclosure and should not be used to limit the present disclosure.
[0037] In the present disclosure, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.
[0038] In the utility model, unless another definite provision and limitation, first feature is on second feature " on " or " under " can be first and second feature direct contact, or first and second feature indirectly contact through intermediate medium.Moreover, first feature is on second feature " above " " upper " and " above " can be first feature is on second feature directly above or obliquely above, or just indicate first feature horizontal height is higher than second feature.
[0039] In an embodiment, referring to Figure 1 , the dynamic balance stable axial flow fan impeller comprises: blades 10, a rotating disc 11 and a shaft core 2, the blades 10 are uniformly arranged on the periphery of the rotating disc 11, the shaft core 2 is used for detachably connecting the rotating disc 11 to a motor rotating shaft, and the rotating disc 11 is provided with dustproof plates 3 of inner recessed annular structure on both sides respectively.
[0040] Specifically, when the impeller rotates, the inclined curved surface of the inner recessed dustproof plate 3 will throw the adhered dust and dirt along the tangent direction under the action of centrifugal force, avoiding the accumulation of dust on the inner side wall of the rotating disc 11.
[0041] In the embodiment, through the centrifugal self-cleaning design of the dustproof plate 3, the impeller can still maintain dynamic balance stability after long-term operation, and the maintenance frequency is reduced.
[0042] In an embodiment, referring to Figure 2 , the rotating disc 11 further comprises an inner flange 112 and an outer flange 113, and the inner flange 112 is sleeved in the outer flange 113.
[0043] Specifically, the dynamic balance stable axial flow fan impeller comprises: blades 10, a rotating disc 11 and a shaft core 2, the blades 10 are uniformly arranged on the periphery of the rotating disc 11, the shaft core 2 is used for detachably connecting the rotating disc 11 to a motor rotating shaft, and the rotating disc 11 is provided with dustproof plates 3 of inner recessed annular structure on both sides respectively.
[0044] In the embodiment, the double-flange structure improves the structural strength of the impeller and provides a more stable mounting basis for the dustproof plate 3.
[0045] In an embodiment, referring to Figure 1 , the inner flange 112 comprises a through hole 111 for mounting the dustproof plate 3, the inner side of the dustproof plates 3 on both sides of the rotating disc 11 are fixed on the inner flange 112 by passing through the through hole 111 by bolts, and the two dustproof plates 3 share a mounting bolt.
[0046] Specifically, the dynamically balanced axial flow fan impeller comprises blades 10, a rotating disc 11, and a shaft core 2, the blades 10 are uniformly arranged on the periphery of the rotating disc 11, the shaft core 2 is used for detachably connecting the rotating disc 11 to a motor rotating shaft, the rotating disc 11 is provided with dustproof plates 3 in the form of concave annular structures on both sides thereof, the dustproof plates 3 are coaxial with the rotating disc 11, the convex surface of the dustproof plate 3 faces the rotating disc 11, the rotating disc 11 further comprises an inner flange 112 and an outer flange 113, the inner flange 112 is sleeved in the outer flange 113, the inner flange 112 comprises a through hole 111 for mounting the dustproof plate 3, the inner side of the dustproof plates 3 on both sides of the rotating disc 11 are fixed on the inner flange 112 by passing through the through hole 111 by bolts, the two dustproof plates 3 share a mounting bolt, the bolt penetrates the dustproof plates 3 on both sides of the inner flange 112, the synchronous fixation of the two dustproof plates 3 is realized, and the installation process is reduced.
[0047] In the embodiment, the shared bolt design simplifies the assembly process and reduces the risk of dynamic balance deviation caused by loosening of the single-side bolt.
[0048] In an embodiment, referring to Figure 2 , the outer flange 113 comprises mounting threaded holes 121 for the dustproof plates 3 on both sides thereof, the outer side of the dustproof plates 3 on both sides of the rotating disc 11 are respectively mounted on the threaded holes 121 of the outer flange 113 of the rotating disc 11 by bolts.
[0049] Specifically, the dynamic balance stable axial flow fan impeller comprises: blades 10, a rotating disc 11 and a shaft core 2, the blades 10 are uniformly arranged on the periphery of the rotating disc 11, the shaft core 2 is used for detachably connecting the rotating disc 11 to a motor rotating shaft, and the rotating disc 11 is provided with dustproof plates 3 in an inner recessed ring structure on two sides thereof; the dustproof plates 3 are coaxial with the rotating disc 11, and the convex surfaces of the dustproof plates 3 face the rotating disc 11; the rotating disc 11 further comprises an inner flange 112 and an outer flange 113, the inner flange 112 is sleeved in the outer flange 113, the inner flange 112 is provided with through holes 111 for mounting the dustproof plates 3, the inner sides of the dustproof plates 3 on the two sides of the rotating disc 11 are fixed on the inner flange 112 through bolts passing through the through holes 111, the two dustproof plates 3 share mounting bolts, and the outer flange 113 is provided with threaded holes 121 for mounting the dustproof plates 3 on the two sides thereof; the outer sides of the dustproof plates 3 on the two sides of the rotating disc 11 are mounted on the threaded holes 121 of the outer flange 113 of the rotating disc 11 through bolts respectively, and the bolts of the inner flange 112 and the outer flange 113 form three-point support, thereby ensuring the stability of the dustproof plates 3 during high-speed rotation.
[0050] In the embodiment, the bilateral bolt fixation enhances the anti-vibration performance of the dustproof plates 3, and avoids structural deformation caused by unilateral force.
[0051] In an embodiment, referring to Figure 2 , the blades 10 and the rotating disc 11 jointly form an impeller body 1, and the impeller body 1 is integrally formed through casting.
[0052] Specifically, the dynamic balance stable axial flow fan impeller comprises: blades 10, a rotating disc 11 and a shaft core 2, the blades 10 are uniformly arranged on the periphery of the rotating disc 11, the shaft core 2 is used for detachably connecting the rotating disc 11 to a motor rotating shaft, and the rotating disc 11 is provided with dustproof plates 3 in an inner recessed ring structure on two sides thereof; the dustproof plates 3 are coaxial with the rotating disc 11, and the convex surfaces of the dustproof plates 3 face the rotating disc 11; the blades 10 and the rotating disc 11 jointly form an impeller body 1, and the impeller body 1 is integrally formed through casting, and the integral forming process eliminates the assembly gap between the blades 10 and the rotating disc 11, and reduces the dynamic balance deviation caused by welding or bolt connection.
[0053] In the embodiment, the overall casting structure improves the symmetry and rigidity of the impeller, and reduces the dynamic balance correction demand from the source.
[0054] In an embodiment, the material of the impeller body 1 is an aluminum alloy material.
[0055] Specifically, the dynamic balance stable axial flow fan impeller comprises blades 10, a rotating disc 11 and a shaft core 2, the blades 10 are uniformly arranged on the periphery of the rotating disc 11, the shaft core 2 is used for detachably connecting the rotating disc 11 to a motor rotating shaft, and a dustproof plate 3 in an inner recessed ring structure is arranged on each side of the rotating disc 11; the dustproof plate 3 is coaxial with the rotating disc 11, and the convex surface of the dustproof plate 3 faces the rotating disc 11; the blades 10 and the rotating disc 11 jointly form an impeller body 1, the impeller body 1 is integrally formed by casting, and the material of the impeller body 1 is an aluminum alloy material; the aluminum alloy has the characteristics of low density and high specific strength, thereby reducing the moment of inertia of the impeller body 1 and improving the corrosion resistance.
[0056] In the embodiment, the lightweight design reduces the motor load and prolongs the service life of the equipment.
[0057] In an embodiment, referring to Figure 1 , the shaft core 2 is fixed on the rotating disc 11 by bolts.
[0058] Specifically, the dynamic balance stable axial flow fan impeller comprises blades 10, a rotating disc 11 and a shaft core 2, the blades 10 are uniformly arranged on the periphery of the rotating disc 11, the shaft core 2 is used for detachably connecting the rotating disc 11 to a motor rotating shaft, and a dustproof plate 3 in an inner recessed ring structure is arranged on each side of the rotating disc 11; the dustproof plate 3 is coaxial with the rotating disc 11, and the convex surface of the dustproof plate 3 faces the rotating disc 11; the shaft core 2 is fixed on the rotating disc 11 by bolts, and the bolt connection mode facilitates the quick disassembly and assembly of the shaft core 2 and the rotating disc 11, and meets the adaptation requirements of different motor rotating shafts.
[0059] In the embodiment, the detachable design improves the universality and maintenance convenience of the impeller composed of the blades 10 and the rotating disc 11.
[0060] In an embodiment, referring to Figure 1 , the shaft core 2 comprises a key groove 21 and a flange ring 22 for connecting the dynamic balance stable axial flow fan impeller to the motor rotating shaft, the key groove 21 is in the center of the flange ring 22, and the flange ring 22 is provided with corresponding through holes fixed on the rotating disc 11 by bolts.
[0061] Specifically, the dynamic balance stable axial flow fan impeller comprises: blades 10, a rotating disc 11 and a shaft core 2, the blades 10 are uniformly arranged on the periphery of the rotating disc 11, the shaft core 2 is used for detachably connecting the rotating disc 11 to a motor rotating shaft, both sides of the rotating disc 11 are respectively provided with dustproof plates 3 in the form of concave annular structure, the dustproof plates 3 are coaxial with the rotating disc 11, and the convex surfaces of the dustproof plates 3 face the rotating disc 11, the shaft core 2 is fixed on the rotating disc 11 through bolts, the shaft core 2 comprises a key groove 21 and a flange ring 22 for connecting the dynamic balance stable axial flow fan impeller with the motor rotating shaft, the key groove 21 is in the center of the flange ring 22, the flange ring 22 is provided with corresponding through holes fixed on the rotating disc 11 through bolts, and the combination of the key groove 21 and the flange ring 22 realizes the dual functions of circumferential torque transmission and axial positioning.
[0062] In the embodiment, the key groove 21 transmits torque, the flange ring 22 ensures installation accuracy, and the connection reliability of the impeller composed of the blades 10 and the rotating disc 11 with the motor is improved.
[0063] In an embodiment, the key groove 21 is machined on the outer cylindrical surface of the shaft core 2, and the motor rotating shaft is provided with a flat key corresponding to the key groove 21.
[0064] Specifically, the dynamic balance stable axial flow fan impeller comprises: blades 10, a rotating disc 11 and a shaft core 2, the blades 10 are uniformly arranged on the periphery of the rotating disc 11, the shaft core 2 is used for detachably connecting the rotating disc 11 to a motor rotating shaft, both sides of the rotating disc 11 are respectively provided with dustproof plates 3 in the form of concave annular structure, the dustproof plates 3 are coaxial with the rotating disc 11, and the convex surfaces of the dustproof plates 3 face the rotating disc 11, the shaft core 2 is fixed on the rotating disc 11 through bolts, the shaft core 2 comprises a key groove 21 and a flange ring 22 for connecting the dynamic balance stable axial flow fan impeller with the motor rotating shaft, the key groove 21 is in the center of the flange ring 22, the flange ring 22 is provided with corresponding through holes fixed on the rotating disc 11 through bolts, the key groove 21 is machined on the outer cylindrical surface of the shaft core 2, the motor rotating shaft is provided with a flat key corresponding to the key groove 21, the flat key and the key groove 21 are matched to transmit torque, and relative sliding between the shaft core 2 and the motor rotating shaft is avoided.
[0065] In the embodiment, the flat key connection structure is simple, good in centering and suitable for reliable transmission under high-speed rotating conditions. The above is only a preferred embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structures or equivalent process transformations obtained by utilizing the contents of the utility model specification and drawings or directly or indirectly applied in other related technical fields are also included in the patent protection range of the utility model.
Claims
1. A dynamically balanced axial flow fan impeller, characterised in that, The utility model relates to a kind of dynamic balance axial flow fan impeller, including: Blade, rotating disc and axle core, the blade is evenly arranged in the rotating disc periphery, the axle core is used to detachably connect the rotating disc on motor shaft, The rotating disc is provided with dustproof plate of inner recessed ring structure on both sides respectively; The dustproof plate is coaxial with the rotating disc, and the convex surface of the dustproof plate faces the rotating disc.
2. The dynamically balanced axial fan impeller of claim 1, wherein, The rotating disc further includes inner flange and outer flange, and the inner flange sleeve is arranged in the outer flange.
3. The dynamically balanced axial fan impeller of claim 2, wherein, The inner flange includes the through hole of dustproof plate installation, and the inner side of dustproof plate on both sides of the rotating disc is fixed on the inner flange by bolt passing through the through hole, and the dustproof plate on both sides shares installation bolt.
4. The dynamically balanced axial fan impeller of claim 3, wherein, The outer flange includes the threaded hole of dustproof plate installation on both sides, and the outer side of dustproof plate on both sides of the rotating disc is respectively installed on the threaded hole of the outer flange of the rotating disc by bolt.
5. The dynamically balanced axial fan impeller of claim 1, wherein, The blade and rotating disc form impeller body together, and the impeller body is integrally formed by casting.
6. The dynamically balanced axial fan impeller of claim 5, wherein, The material of the impeller body is aluminum alloy material.
7. The dynamically balanced axial fan impeller of claim 1, wherein, The axle core is fixed on the rotating disc by bolt.
8. The dynamically balanced axial fan impeller of claim 7, wherein, The axle core includes keyway and flange ring for connecting the dynamic balance axial flow fan impeller and motor shaft on the axle core, the keyway is in the center of flange ring, and the flange ring is provided with corresponding through hole fixed on the rotating disc by bolt.
9. The dynamically balanced axial fan impeller of claim 8, wherein, The keyway is processed on the outer cylindrical surface of axle, and the motor shaft has corresponding key on the axle.