Dustproof device for motor frame

Abstract

The utility model discloses a dustproof device of motor frame, and the device comprises: air inlet, set up in the lower half of motor frame, curved air filter, detachable setting with the air inlet, the curved air filter includes outer layer ventilation window board, middle layer filter layer and inner layer support board. The curved structure of the air filter of the device combines gravity sedimentation and filter layer structure, and effectively separates large particles and particulate dust, the curved air filter is conformal design with the air inlet of frame, and is installed in conjunction, reduces external protruding component, the curved air filter is detachable design, and the user is convenient quick replacement or cleaning filter material, and the clean air after filtration can effectively protect motor winding, electronic component and other key components, prolongs the life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of dust prevention technology for industrial equipment, and more specifically, to a dust prevention device for a motor base. Background Technology

[0002] Traditional motor mounts have air inlets located on the side, allowing excessive dust to enter. Furthermore, traditional motor mount dustproof designs often use flat screens or cylindrical filters, which have the following drawbacks:

[0003] 1. In high-dust environments, it is difficult to simultaneously meet the requirements for ventilation and heat dissipation as well as efficient dust prevention;

[0004] 2. Dust enters the motor in a straight line with the airflow, resulting in low filtration efficiency;

[0005] Therefore, there is an urgent need for a filtration device with high dust prevention capabilities. Utility Model Content

[0006] This utility model provides a dustproof device for a motor base to solve the problem of low dustproof efficiency in the prior art.

[0007] To achieve the above objectives, this utility model provides a dustproof device for a motor base. The device includes: an air inlet disposed in the lower half of the motor base; and a curved air filter detachably disposed in conjunction with the air inlet. The curved air filter includes an outer ventilation window plate, a middle filter layer, and an inner support plate.

[0008] Optionally, the curved air filter has an arc-shaped structure that completely blocks the air inlet.

[0009] Optionally, the outer ventilation window panel is a louver structure; the outer ventilation window panel includes a plurality of parallel blade-shaped protrusions, and ventilation gaps are provided between adjacent blade-shaped protrusions.

[0010] Optionally, the middle filter layer is a HEPA filter cotton, which filters particles with a particle size ≥ 0.3 μm.

[0011] Optionally, the inner support plate is an arc-shaped metal plate with multiple round holes; the inner support plate and the outer ventilation window plate form a support structure for holding the filter layer.

[0012] Optionally, the curved air filter is fixed to the air inlet of the motor base by bolts or clips.

[0013] Optionally, the motor base is a one-piece molded structure made of cast aluminum or cast iron.

[0014] Optionally, the air inlet is provided with thickened stiffening plates on both sides.

[0015] The beneficial effects of this utility model are:

[0016] This utility model provides a dustproof device for a motor base. The device includes: an air inlet located in the lower half of the motor base; and a curved air filter detachably fitted to the air inlet. The curved air filter includes an outer ventilation window, a middle filter layer, and an inner support plate. The curved structure of the air filter combines gravity settling with the filter layer structure to effectively separate large and fine dust particles. The curved air filter is conformally designed to fit the air inlet of the base, minimizing protruding external parts. Compared to a straight-tube filter, the curved structure is more concealed, has higher mechanical strength, and better impact resistance. The curved air filter is detachable, allowing users to quickly replace or clean the filter media. The filtered clean air effectively protects key components such as motor windings and electronic components, extending equipment lifespan. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a dustproof device for a motor base provided in an embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the curved air filter provided in this embodiment of the utility model.

[0019] Symbol explanation:

[0020] Air inlet-1, motor base-2, curved air filter-3, ventilation window panel-31, filter layer-32, support plate-33. Detailed Implementation

[0021] 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. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Figure 1 This is a schematic diagram of the structure of a dustproof device for a motor base 2 provided in an embodiment of this utility model; as shown. Figure 1 As shown, the device includes:

[0023] 1. Air inlet 1 is located on the lower half of the motor base 2;

[0024] In one optional embodiment, the motor base 2 is a one-piece cylindrical shell structure, whose main function is to support the internal components of the motor (such as the stator, rotor, bearing housing, etc.) and provide protection and ventilation pathways. The motor base 2 is a one-piece cast aluminum or cast iron structure to ensure good mechanical strength and corrosion resistance, suitable for various industrial environments. The lower half of the motor base 2 has an axially oriented arc-shaped air inlet 1. The air inlet 1 is located in the lower half of the motor base 2, rather than on the side, which reduces the risk of dust directly entering the machine body.

[0025] The air inlet 1 and the motor base 2 are designed with a conformal structure, eliminating the need for an external protruding base or bracket.

[0026] In an optional embodiment, to further enhance the structural strength of the motor base 2, thickened stiffening plates are provided on both sides of the air inlet 1. These stiffening plates are integrally cast or subsequently welded to the outer wall of the base, and their extension direction is approximately parallel to the axis of the motor base 2, located at the left and right edges of the arc-shaped air inlet 1, respectively. The cross-section of the stiffening plate is rectangular, T-shaped, or rounded, and its thickness is significantly greater than the wall thickness of the motor base 2 (e.g., 1.5 to 2 times the thickness of the base shell). The air inlet 1 is located at the lower part of the base; without reinforcement, it may lead to insufficient local structural strength. The thickened stiffening plates effectively prevent deformation of the housing, especially during transportation, installation, or vibration conditions.

[0027] 2. A curved air filter 3 is detachably installed to fit the air inlet 1. The curved air filter 3 includes an outer ventilation window 31, a middle filter layer 32, and an inner support plate 33.

[0028] Figure 2 This is a structural schematic diagram of the curved air filter 3 provided in this embodiment of the utility model. Figure 2 As shown, the curved air filter 3 has an arc-shaped structure and completely blocks the air inlet 1.

[0029] Specifically, the curved air filter 3 is designed with an arc-shaped structure that matches the shape of the air inlet 1 of the motor base 2, and is integrally fitted to the lower half of the air inlet 1 of the motor base 2, serving a combined function of sealing, filtering, and airflow guidance. Its structure and function are described below:

[0030] The curved air filter 3 is fixed to the air inlet 1 of the motor base 2 by bolt or snap-fit ​​connection, so as to achieve detachable installation; it covers the air inlet 1 area as a whole, forming the first dust barrier and blocking the direct channel of external particles.

[0031] The curved air filter 3 consists of three layers, from the outside in:

[0032] (1) Outer ventilation window panel 31 (first layer)

[0033] The outer ventilation window panel 31 is a louver structure; the outer ventilation window panel 31 includes a plurality of parallel blade-shaped protrusions, and ventilation gaps are provided between adjacent blade-shaped protrusions.

[0034] Specifically, the outer ventilation window panel 31 is an integral arc-shaped plate with multiple horizontally arranged, blade-like protrusions on its outer surface. These protrusions have curved or inclined cross-sections, resembling venetian blinds in appearance. Each blade is a relatively thin and wide protrusion extending outward from the main plane of the ventilation window panel 31, with its protrusion direction forming a certain angle (typically 30°–60°) with the airflow direction to guide the airflow and change its path. A ventilation gap is provided between two adjacent blade-like protrusions, extending through the width of the window panel to allow air to enter from the outside while simultaneously creating a bend in the airflow path. The gap width can be controlled between 3 and 6 mm depending on filtration requirements, balancing ventilation efficiency and dust prevention.

[0035] When coarse dust particles pass through the gaps between the blades, the airflow is redirected by the raised blades. Some dust particles, due to inertia, cannot bend with the airflow and instead impact the blade surface or settle at the bottom, achieving initial physical interception. The louvered structure effectively reduces turbulence caused by sudden changes in wind speed, forming a more stable inlet airflow, which helps extend the service life of the subsequent filter layer 32. Because the gaps are located between the raised blades and the openings face downwards (or form a certain angle with the horizontal), rainwater, splashing liquids, and large foreign objects cannot directly enter, enhancing the overall protection capability. The blade-like structure itself has a certain impact resistance, which can improve the overall damage resistance of the machine.

[0036] (2) Middle filter layer 32 (second layer)

[0037] The middle filter layer 32 is a HEPA filter cotton, which filters particles with a particle size ≥ 0.3 μm.

[0038] Specifically, the middle filter layer 32 is made of industrial-grade HEPA filter cotton, and the specific material can be ultra-fine glass fiber, meltblown polypropylene fiber or their composite material, and has the following performance characteristics:

[0039] ① High filtration efficiency: It can effectively intercept suspended particles with a diameter ≥ 0.3 micrometers (μm), with a filtration efficiency of not less than 99.97%;

[0040] ②Low resistance and high throughput: While ensuring high filtration performance, it maintains low air resistance, which is conducive to normal ventilation and heat dissipation of the equipment;

[0041] ③ Good structural flexibility: The filter cotton has a compressible, porous structure, which makes it easy to bond with the inner and outer layers and is not easy to delaminate or collapse;

[0042] ④ Strong temperature and corrosion resistance: Suitable for medium and high temperature and oil mist environments that may be generated during motor operation.

[0043] Furthermore, the filter cotton thickness can be between 15mm and 30mm, which can be flexibly configured according to the dust concentration in different usage scenarios; the HEPA filter cotton has a replaceable structure, and users can replace it regularly according to the actual usage time or differential pressure monitoring results.

[0044] Furthermore, larger particles deflect due to inertia as they move with the airflow, impacting the blade surface and being trapped; slightly smaller particles are trapped when they approach the middle filter layer 32, and then fall naturally under gravity due to the curvature, while even smaller particles are adsorbed by the filter layer 32.

[0045] The combined effect of these three mechanisms ensures that even in harsh environments with high dust concentrations, the cleanliness of the air entering the equipment after filtration through the middle filter layer 32 meets the standards, thereby significantly reducing the risk of contamination and wear on core components of the equipment (such as windings, bearings, and PCB boards).

[0046] (3) Inner support plate 33 (third layer)

[0047] The inner support plate 33 is an arc-shaped metal plate with multiple round holes; the inner support plate 33 and the outer ventilation window plate 31 form a support structure for holding the filter layer 32.

[0048] Specifically, the inner support plate 33 is the innermost component of the curved air filter 3, facing directly into the motor, and mainly serves as structural support, shaping, and ventilation guidance. It is designed as an arc-shaped metal plate structure that matches the shape of the arc-shaped air inlet 1 of the motor base 2, and works with the outer ventilation window plate 31 to form a complete filter sandwich structure.

[0049] The inner support plate 33 is an arc-shaped plate structure with a curvature consistent with the outline of the air inlet 1, ensuring that it is installed in close contact with the middle HEPA filter without wrinkles or gaps.

[0050] The support plate 33 has multiple ventilation holes evenly distributed on it. These holes allow air to continue flowing into the motor after being filtered by the middle layer of filter cotton. Its main features include: the diameter of the holes is 4 to 8 mm, and the number is densely distributed according to the plate area; the distribution method can be uniform arrangement or array-type hole arrangement, which satisfies the ventilation efficiency and avoids structural stress concentration; the edges of the holes are chamfered or rolled to prevent damage to the filter cotton.

[0051] The beneficial effects of this utility model are:

[0052] This utility model provides a dustproof device for a motor base 2. The device includes: an air inlet 1, located in the lower half of the motor base 2; and a curved air filter 3, detachably mounted to fit the air inlet 1. The curved air filter 3 includes an outer ventilation window 31, a middle filter layer 32, and an inner support plate 33. The curved structure of the air filter, combined with gravity settling and the structure of the filter layer 32, effectively separates large particles and fine dust. The curved air filter 3 is conformally designed to fit the air inlet 1 of the base, minimizing external protruding parts. Compared with a straight-tube filter, the curved structure is more concealed, has higher mechanical strength, and better impact resistance. The curved air filter 3 is detachable, allowing users to quickly replace or clean the filter material. The filtered clean air effectively protects key components such as motor windings and electronic components, extending the equipment's lifespan.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dust-proof device for a motor frame, characterized by comprising: include: The air inlet is located on the lower half of the motor base; A curved air filter is detachably installed to fit the air inlet. The curved air filter includes an outer ventilation window panel, a middle filter layer, and an inner support plate.

2. The apparatus according to claim 1, characterized in that: The curved air filter has an arc-shaped structure that completely blocks the air inlet.

3. The apparatus according to claim 1, characterized in that: The outer ventilation window panel has a louver structure; the outer ventilation window panel includes multiple parallel blade-shaped protrusions, and ventilation gaps are provided between adjacent blade-shaped protrusions.

4. The apparatus according to claim 1, characterized in that: The middle filter layer is a HEPA filter cotton, which filters particles with a particle size ≥ 0.3 μm.

5. The apparatus according to claim 1, characterized in that: The inner support plate is an arc-shaped metal plate with multiple round holes; the inner support plate and the outer ventilation window plate form a support structure for holding the filter layer.

6. The apparatus according to claim 1, characterized in that: The curved air filter is fixed to the air inlet of the motor base by bolts or clips.

7. The apparatus according to claim 1, characterized in that: The motor base is a one-piece molded structure made of cast aluminum or cast iron.

8. The apparatus according to claim 1, characterized in that: The air inlet is equipped with thickened stiffening plates on both sides.

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