45 results about "Acoustic noise reduction" patented technology

This utility model relates to a noise reduction structure for a DC motor, wherein the noise reduction structure (1) is disposed within a cavity for accommodating a commutator (2) and close to the sound source. The noise reduction structure (1) can be a honeycomb structure, a square structure, a circular structure, or a regular polygonal structure, and can be disposed on the bottom surface of the cavity, or simultaneously on the sidewalls and bottom surface of the cavity. The noise reduction structures (1) can be evenly distributed on the bottom surface and sidewalls of the cavity, or staggered. In addition, the noise reduction structure (1) can also be disposed within the cavity of a gearbox (5), including at the bottom of the gearbox cavity (6), or simultaneously on the bottom and cavity walls of the gearbox cavity (6). Using this noise reduction structure for a DC motor, the sound waves generated by the sound source are effectively reflected and canceled out by the noise reduction structure, thus reducing the noise of the DC motor and possessing certain practical value.

The utility model relates to the technical field of los angeles abrasion tester, specifically relates to a los angeles abrasion tester with noise reduction function, including base, the gearbox of setting on the base, two support frames and the drum of rotating control through gearbox, the drum includes inner tube and outer tube, the inner tube is polyurethane rubber material, and the inner tube and outer tube form the sound insulation cavity of sealing, and the cavity is filled with sound absorption cotton, and the lower portion of drum is equipped with screen frame, and the both ends of screen frame are rotatably installed on the corresponding pivot, the double -deck structure of inner tube and outer tube is used to the drum, and fills sound absorption cotton, and can effectively absorb the noise of the collision of sample and cylinder wall, the polyurethane rubber material can reduce the rigid impact of sample collision, reduce noise from the source, solve the problem that the traditional equipment is running noisy, the both ends of screen frame are rotatably installed on the pivot, and reciprocating swing along the pivot of screen frame can be controlled through the handle, realize the quick separation of coarse and fine aggregate, need not extra carry material and carry out screening, reduce the artificial labor intensity.

The utility model belongs to air conditioner compressor technical field especially relates to a kind of noise reduction structure of air conditioner compressor sound attenuation package, including frame, air inlet and air outlet are set up on frame, frame has sound attenuation chamber inside, noise enters from air inlet, to sound attenuation chamber inside, then noise passes through air outlet and enters into gas storage chamber, in turn through upper support plate, middle support plate and lower support plate, finally from exhaust port inside the noise is discharged, when noise spreads to sound attenuation chamber inside, will first collide with assembly component, noise will occur reflection, refraction and scattering and other phenomena in the process of collision, so that noise is in the bounce space Bounce back.And in the bounce process, the energy of noise will be gradually consumed and dispersed, because installation frame is installed at air outlet, to lengthen the path of noise, further reduce noise;Compared with prior art, the utility model thereby improves sound attenuation effect.

The invention discloses a multifunctional composite material and a preparation method and application thereof, and belongs to the technical field of composite materials. The multifunctional composite material provided by the invention is suitable for industrial scenes which need to meet the requirements of corrosion resistance, buoyancy support, light heat preservation and safety protection at the same time. Comprising but not limited to the fields of passive energy absorption protection, petrochemical engineering storage and transportation facilities, deep sea detection equipment, structure filling engineering in flammable and explosive environments, acoustic noise reduction engineering and the like. The multifunctional composite material provided by the invention is a material with multi-environment adaptability, and is particularly suitable for a composite functional material system with the characteristics of water resistance, oil resistance, chemical corrosion resistance, low heat conductivity, flame retardance, high-temperature adaptability, sound absorption, noise reduction and structural lightweight.

The utility model discloses a 500KV main transformer iron core noise reduction auxiliary tool belongs to transformer iron core noise reduction technical field, this 500KV main transformer iron core noise reduction auxiliary tool, transformer iron core subassembly sets up inside transformer body, the bottom of transformer iron core subassembly is installed to the noise reduction shell, and the top limiting installation of transformer iron core subassembly has the supplementary noise reduction cover board, one end of supplementary noise reduction subassembly sets up inside the noise reduction shell, and the bottom transmission connection of transformer iron core subassembly with supplementary noise reduction subassembly's another end, side first damping spring, side second damping spring and end damping spring, can effectively buffer and absorb the vibration energy that transformer iron core subassembly generates, reduce vibration transmission to reduce the generation and spread of noise. Meanwhile, the multilayer composite board and sound absorbing cotton in the supplementary noise reduction cover board can further absorb and block the noise, improve the noise reduction effect, and the supplementary noise reduction cover board is directly installed on the top of the transformer iron core subassembly and is not installed with the transformer body.

The utility model relates to the technical field of wall surface cloth, in particular to curved surface acoustic wall surface sticking cloth. The patch comprises a patch body, two convex grooves are formed in the surface of the patch body, strip-shaped plates are connected to the surfaces of the convex grooves in a sliding mode, connecting blocks are fixedly connected to the surfaces of the strip-shaped plates, flannelette is fixedly connected to the surfaces of the two connecting blocks, and the flannelette is attached to the surface of the patch body. The surface of the flannelette is fixedly connected with a plurality of flannelette points, the height sizes of the flannelette points are different, the surface of the patch body is provided with a plurality of sound absorption grooves, and a plurality of refraction protrusions are arranged in the sound absorption grooves. The problems that when sound waves meet a flat patch body, the sound waves on the surface of the patch body are intensively reflected, so that indoor sound interferes with each other, echo is obvious, voice definition is reduced, noise pollution is aggravated, normal communication, learning and rest of people are seriously affected, and even hearing fatigue is possibly caused are solved.

This application relates to the field of robotic vacuum cleaner technology, and in particular to a silent motor for robotic vacuum cleaners, comprising a motor body and a noise reduction component. The noise reduction component is connected to the motor body via an elastic connector and includes a vibration absorption structure and a soundproof enclosure. The inner wall of the soundproof enclosure is provided with sound-absorbing sheets and filling material, and the bottom fixing bracket ensures installation accuracy through positioning pins. This application significantly reduces noise through the synergistic effect of vibration damping pads, sound-absorbing sheets, and elastic connectors, and adopts a split soundproof enclosure for easy maintenance while optimizing heat dissipation performance. This utility model solves the problems of complex noise reduction, high cost, and insufficient heat dissipation in existing motors, providing technical support for the miniaturization design of robotic vacuum cleaners.

The utility model provides a kind of road noise barrier based on sound-absorbing material, including barrier support assembly and barrier body, barrier support assembly includes the barrier support post of pair arrangement, and the sliding slot upper end of barrier support post is connected with buffer sliding block, and one barrier hanging pole is connected between buffer sliding block, barrier hanging pole is connected with barrier assembly support by hinged link, and barrier assembly support is connected with barrier body by bolt.The utility model in barrier body is converted into heat energy dissipation by the sound hole hole of sound hole board body, and the sound-absorbing micropore on microporous attraction cloth layer is based on micro-perforated plate theory, and the sound-absorbing coefficient is excellent in full frequency band, especially in low frequency part, further improve sound-absorbing effect, significantly improve the sound-absorbing performance of low frequency band by sound-absorbing cotton layer, and the porous structure of sound-absorbing cotton layer effectively insulates internal air convection and heat radiation, significantly reduce heat loss, while large aperture area absorbs and reflects sound wave, effectively reduce noise.

To provide a ventilation system that can sufficiently reduce noise. [Solution] A ventilation device comprising an external housing having an intake opening for drawing in air and an exhaust opening for discharging air, and a centrifugal blower housed in the external housing, wherein the centrifugal blower comprises a scroll casing formed with an intake port for drawing in air from the intake opening and an exhaust port connected to the exhaust opening, the external housing has a side portion and a bottom portion located in the left-right direction of the airflow entering from the intake opening when the ventilation device is installed, and the ventilation device further comprises a first sound-absorbing member fixed to the side portion and a second sound-absorbing member fixed to the bottom portion, the second sound-absorbing member being fixed to the upper part of a projection provided on the bottom portion, thereby forming a space between the second sound-absorbing member and the bottom portion.

This utility model relates to an axial flow fan silencer, specifically for the grain storage industry. It includes a silencer body with a baffle device connected to its lower end. The silencer body comprises a fan connection part and a flow guide part. The fan connection part is bolted to the air outlet of the axial flow fan, and the flow guide part is welded to the baffle device. The flow guide part and the fan connection part are arranged at a 90° angle. The baffle device has an inverted right-angled trapezoidal structure and contains multiple sets of baffles, each set consisting of two baffles arranged with a narrower upper section and a wider lower section. Sound-absorbing cotton is attached to the inner walls of the silencer body and the baffle device, as well as to the baffles. This new technology effectively reduces the noise of the axial flow fan, with actual measurements showing a noise reduction of over 20 decibels, thus resolving the noise disturbance issue near residential areas.

This application discloses a copper venting assembly for noise reduction; it includes a noise-reducing cylinder with an inlet and an outlet, the interior of which is filled with sound-absorbing material to form a noise-reducing zone; the noise-reducing cylinder is connected to a venting pipe via a connecting pipe at the inlet, so that the airflow from the venting pipe passes through the noise-reducing zone and is discharged through the outlet of the noise-reducing cylinder; the connecting pipe and the venting pipe are connected by a locking structure, which is adapted to adjust the locking force between the connecting pipe and the venting pipe according to the outlet pressure of the venting pipe. The beneficial effects of this application are: by adaptively adjusting the locking force according to the outlet pressure of the venting pipe through the locking structure, the strong connection between the noise-reducing device and the venting pipe is effectively increased, reducing resonance and the noise generated by resonance; and the noise-reducing effect is greatly enhanced by setting up a noise-reducing channel.

The utility model relates to electric motor car technical field discloses a kind of electric motor car motor of middle placement, including protective shell, the inner bottom wall of protective shell is fixedly connected with backing plate, the utility model passes through polyurethane elastomer backing plate, absorbs the vibration energy generated when motor runs, play buffering effect, to reduce the amplitude of vibration transmission to external structure, effectively reduce the noise caused by vibration, simultaneously, sound insulation and noise reduction board of protective shell both sides, its internal fiber structure can produce multiple reflection and absorption to sound, further reduce noise propagation, the aperture of conical sound insulation hole on the surface of sound insulation and noise reduction board gradually decreases, so that sound is hindered and reflected by different aperture size when passing, effectively reduce the propagation intensity of sound, reach better sound insulation and noise reduction effect, significantly reduce the noise when electric motor car motor runs, avoid the adverse effects of traditional motor noise on riding comfort and surrounding living environment.

This invention discloses a noise reduction and stabilization construction device and its construction method for civil engineering road construction. The invention relates to the field of road construction technology and includes a soundproof enclosure. The left side of the outer wall of the soundproof enclosure has an insertion interface, and the right side of the soundproof enclosure is fixedly connected to an insertion plate. The outer wall shape of the insertion plate is consistent with the inner wall shape of the insertion interface, and the positions of the insertion interface and the insertion plate on the soundproof enclosure are correspondingly arranged. Sealing plates are provided on both the left and right sides of the soundproof enclosure. The outer wall of the sealing plate contacts the outer wall of the soundproof enclosure. A bolt connecting plate is fixedly connected to the upper side of the sealing plate, and one side of the bolt connecting plate extends to the upper side of the soundproof enclosure. The outer wall of the bolt connecting plate is fixedly connected to the outer wall of the soundproof enclosure by bolts. This invention can reduce the vibration of the ground caused by the impact of construction machinery by using a water-filled bag that adheres to the ground, thereby reducing the noise source. It has the characteristics of strong practicality and is beneficial for reducing road construction noise.

The utility model relates to the related field of noise reduction assembly, especially a fan noise reduction assembly, including sound insulation room, sound insulation door, observation window, exhaust pipe, ventilation assembly and sound insulation board etc. The utility model discloses high damping vibration stop layer, high -efficient sound absorption sound insulation layer, metal pipe cover damping rubber are set up to reduce the noise that air flows in the pipeline produces, and is provided with sound insulation board in sound insulation room to reduce the mechanical noise that fan generates when working, and through ventilation assembly to the fan ventilation cooling in sound insulation room, and the sound reduction board can carry out the noise reduction treatment to the flowing air in the ventilation pipe, reduces the noise pollution through, is favorable to reducing the influence of large -scale fan for electric heating furnace in the use process to the production environment.

This application relates to the field of ventilation electrical appliances, and in particular to a ventilation device with a silent air duct, comprising a housing, a volute air duct, and a fan assembly. The housing inlet end is equipped with a detachable composite filter module that achieves layered interception of sand and dust and allows for tool-free quick removal. The inner wall of the volute air duct, where the airflow turns, is embedded with noise-reducing components to eliminate eddies and resonance noise within the duct. Adaptive sealing components are provided at the joints of the panels of the housing to compensate for gaps in the housing joints and prevent sand and dust leakage. The volute air duct inlet end has a diffuser to ensure smooth airflow, a guide section on its inner wall, and a suppressor to prevent backflow. The noise-reducing components include honeycomb elements and sound-absorbing elements. The composite filter module includes a frame and multiple filter layers. The adaptive sealing components include a first seal and a second seal. This application achieves the technical effects of effectively filtering sand and dust, reducing noise, compensating for housing gaps, ensuring smooth airflow, and preventing backflow.

This utility model belongs to the field of building decoration materials technology, and in particular, it is a green, environmentally friendly, and recyclable aluminum single panel. Addressing the problems of existing aluminum single panels being inconvenient to install, difficult to disassemble when damaged and needing replacement or repair, and the inability of current aluminum single panels to provide sound insulation, the following solution is proposed: It includes an installation frame and an aluminum single panel body installed within the installation frame. Multiple connecting brackets are symmetrically welded to one side of the installation frame, and these brackets are fixedly connected to the keel frame by bolts. A positioning frame is adhered inside the installation frame, and multiple U-shaped clips are symmetrically fixedly installed on one side of the aluminum single panel body. The installation frame designed in this utility model can assist in the quick installation or disassembly of the aluminum single panel body, thus providing excellent convenience during maintenance. Simultaneously, this technical solution achieves good sound insulation, effectively reducing noise pollution in practical use.

1. The name of the design product: stepped sound absorption box. 2. The use of the design product: installed on rice mill and other electrical equipment, used for reducing noise. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

This utility model relates to the field of three-phase asynchronous motor technology and provides a three-phase asynchronous motor with a self-noise reduction structure. It includes a three-phase asynchronous motor body, a mounting base fixedly connected to the bottom of the motor body, a rubber strip at the bottom of the mounting base, an end cap detachably attached to one end of the motor body, the end cap being filled with a first sound-insulating cotton, and a rubber ring fixedly connected to the other side of the end cap. This three-phase asynchronous motor with a self-noise reduction structure reduces noise generated during operation by adding several reinforcing ribs to the surface of the motor body. The first sound-insulating cotton filling the end cap reduces noise transmission and minimizes the impact on the surrounding environment. The rubber ring, in conjunction with the end cap, reduces wear and vibration transmission between the end cap and the motor body. Multiple positioning blocks provide fixation, preventing misalignment and improving noise reduction stability.

This utility model discloses a pit drill for mining geological exploration, including a fixed cover and a drill rod, drill bit, and power unit disposed within the fixed cover. A gripping handle is fixedly provided on the outer wall of the fixed cover. A connecting line is provided between the fixed cover and the power unit. A movable cover is movably disposed outside the fixed cover. A first movable groove is provided on the outer wall of the fixed cover, and a first sliding rod is fixedly disposed within the first movable groove. A movable block is slidably fitted onto the first sliding rod via a first elastic mechanism. In this utility model, the fixed cover and the movable cover form a double-enclosed structure. The sound-absorbing cotton in the internal filling cavity effectively absorbs the noise generated by the drill rod and drill bit during operation, significantly reducing the impact of noise on operators. Simultaneously, the enclosed structure reduces the diffusion of noise into the pit, creating a more comfortable acoustic environment for exploration operations.

This utility model discloses a multi-layer conical cavity composite plywood, which, from top to bottom, consists of a surface layer, a flame-retardant layer, an upper microporous noise-reducing layer, an upper core layer, a middle layer, a lower core layer, a lower microporous noise-reducing layer, a moisture-proof layer, and a bottom layer. The surface layer is made of oak, the flame-retardant layer is made of antimony trioxide modified non-woven fabric, and the moisture-proof layer is made of aluminum foil. The upper and lower microporous noise-reducing layers have noise-reducing micropores, the upper and lower core layers have noise-reducing conical holes, the middle layer is embedded with rectangular melamine foam board, and the surface of the surface layer also has microgrooves. This plywood achieves multiple functions through a multi-layer structure. The various noise-reducing structures work together to reflect, refract, and absorb sounds of different frequencies multiple times, significantly reducing noise; the flame-retardant layer effectively improves fire resistance; and the aluminum foil moisture-proof layer can prevent moisture intrusion and extend service life. Its structural design is reasonable and can meet the needs of various places for flame retardancy, noise reduction, and moisture protection of the plywood.

This utility model relates to the field of motor technology and discloses a low-noise motor output shaft, including a motor output shaft body. A sound insulation mechanism for reducing noise is provided on the outer side of the motor output shaft body, and a lubrication mechanism for injecting grease into the outer wall of the sound insulation mechanism. This utility model confines noise within the sound insulation enclosure, preventing noise leakage. The use of sound insulation cotton absorbs and isolates noise, further reducing its propagation. The lubrication mechanism lubricates the motor output shaft during rotation, reducing friction and thus lowering noise levels. It also extends the service life of the motor output shaft, achieving a noise reduction function for existing motor output terminals.

This utility model provides a humidifier noise reduction device, comprising a float plate, an energy-concentrating ring, and an outer cover. The float plate has a receiving groove extending along its thickness direction. The energy-concentrating ring is installed in the receiving groove and has an upper end face and a lower end face. A through hole is provided between the upper and lower end faces, and the axial direction of the through hole is the same as that along the thickness direction of the energy-concentrating ring and the thickness direction of the float plate. The outer cover includes a closed top end and side walls with several openings. The outer cover is fixed to the upper surface of the float plate and covers the upper side of the energy-concentrating ring. This utility model also provides a humidifier including this noise reduction device, which can significantly reduce noise and improve user portability.

This invention provides an auditory environmental perception health promotion system, comprising: a sensing device, a processing device, an interactive device, and a treatment device. The sensing device receives sound signals from the surrounding environment or senses physiological characteristics of the user. The processing device stores multiple unfriendly voiceprint features and physiological modalities. When the processing device determines that a sound signal matches one of the unfriendly voiceprint features or that a physiological feature differs from a physiological modality, the processing device generates a noise reduction command signal. The interactive device is equipped with an application program that can receive and obtain matching audio from an audio medium based on the noise reduction command signal. The treatment device can play the audio. Therefore, when noise is detected, audio can be used to reduce the impact of noise on the user and improve the user's discomfort caused by noise.

The utility model provides a kind of low-noise blower box structure based on air inlet passage optimization, to improve air flow efficiency, reduce noise and protect internal components.The structure includes case, first baffle, second baffle, host installation plate and sound-absorbing box, through the air inlet passage of careful design to ensure smooth transition of airflow, reduce aerodynamic noise, and effectively dissipate heat.The side opening door in the left side plate of case is embedded with filter structure, including mounting frame, support plate and air inlet plate, which can remove small particles in air and prevent dust from entering.The electric control bin is provided with electric control cabinet for easy maintenance and electric control door with display screen, which displays working state parameters in real time and improves operation convenience.The exhaust pipe in host bin is arranged in sound-absorbing box and extends out of case top plate, quickly discharging hot air to maintain the best working temperature of equipment.The overall design not only improves cooling efficiency and noise reduction effect, but also enhances the reliability and maintenance convenience of equipment.

The utility model discloses a kind of noise reduction mechanism for switch board, it is related to switch board technical field, including cabinet, the inside side wall of cabinet is fixed with sound insulation board, first sound absorption hole is equidistantly arranged on sound insulation board, the inboard of each first sound absorption hole is provided with sound absorption pipe, second sound absorption hole of even distribution is provided on each sound absorption pipe, heat dissipation hole is provided in the bottom of cabinet side, heat dissipation hole is communicated with the first sound absorption hole of sound insulation board one side bottom, the top of cabinet is fixed with cooling mechanism, the bottom end inner wall of cabinet four corners is fixed with first rubber pad, the upper end of four first rubber pads is fixed with U type frame. In the utility model, noise is absorbed by sound insulation board, sound absorption hole and sound absorption pipe, and noise propagation is reduced;Utilize rubber pad and elastic component to reduce element vibration and noise transmission;Fan in cooling mechanism cooperates with dust filter screen, can both cooling and dust prevention, ensure normal operation of equipment, simultaneously, heat dissipation hole is combined with sound absorption structure, give consideration to heat dissipation and noise reduction.

This utility model discloses a sound adjustment device and an exhaust pipe, relating to the field of engine exhaust system technology. It includes a mounting plate detachably connected to the end of a muffler. A first pipe and a second pipe are fixedly connected to both sides of the mounting plate. The first pipe is located inside the muffler's cavity, and the second pipe is located on the outer end face of the muffler. The outer circumference of the first pipe has multiple silencing holes to reduce exhaust noise. A transition pipe is provided on the inner circumferential wall of the first and second pipes, fixedly connected to the second pipe. This transition pipe further reduces the inner diameter of the exhaust gas passage, thereby reducing the vibration of the first and second pipes and lowering noise. A buffer pad is provided between the mounting plate and the muffler to reduce the vibration of the mounting plate, thus reducing noise. When the mounting plate, the first pipe, and the second pipe are installed in the muffler, the silencing effect is improved; after removal, the silencing effect is reduced, thus achieving adjustment of the exhaust sound.

The utility model discloses a noise reduction structure of an automobile front cover supporting rod motor, belongs to the technical field of automobile noise reduction parts, and aims to provide a supporting rod motor noise reduction structure which still has good quietness even if an automobile front cover is opened, the noise reduction structure comprises a first shell, a second shell and a hinge shaft, and a first sound insulation cover is arranged on the inner wall of the first shell; a first sound insulation cover is arranged on the inner wall of the first shell, a second sound insulation cover is arranged on the inner wall of the second shell, the first sound insulation cover and the second sound insulation cover jointly wrap the automobile front cover supporting rod motor, one side of the first shell and one side of the second shell are rotationally connected through a hinge shaft, and the other side of the first shell and the other side of the second shell are limited through a connecting piece; the first shell comprises a first cylinder barrel cover and a first motor cover which are integrated, and an inner cavity of the first cylinder barrel cover is communicated with an inner cavity of the first motor cover. According to the invention, the shell structure similar to the stay bar motor in shape is designed, and the sound insulation cover is arranged in the shell structure to wrap the outer side of the stay bar motor, so that the vibration of the stay bar motor is prevented from spreading outwards, and the noise is effectively reduced.

This invention proposes a lightweight fire-resistant ship cabin wall panel, comprising a cabin wall panel body, wherein the cabin wall panel body includes a buffer layer, and a first reinforcing layer and a second reinforcing layer are respectively connected to the upper and lower surfaces of the buffer layer. The buffer layer of this invention features an elastic substrate formed by an "S" bend, with a corrugated buffer portion in the middle, providing excellent cushioning and shock absorption performance against vibrations and impacts to the panel. Sound-absorbing panels are connected to both the upper and lower parts of the elastic substrate; these sound-absorbing panels are sound-absorbing foam panels with internal air cavities, and the porous structure effectively absorbs and reflects sound waves, reducing noise.

The utility model discloses a kind of noise reduction air source heat pumps, including air source heat pump main body, the top end output port of air source heat pump main body is equipped with sound reduction cover, the top end of sound reduction cover is equipped with dust frame;The top end of dust frame is embedded with dust screen, both sides outer wall of dust screen are equipped with embedded block;The inner wall of both sides of dust frame is equipped with embedded groove, embedded block is embedded in embedded groove;The bottom end of sound reduction cover is equipped with limit ring plate, the top end of limit ring plate is equipped with locating screw hole in four corners, the top end of air source heat pump main body is equipped with locating screw groove in four corners of its output port;The setting of this noise reduction air source heat pump, the utility model is equipped with sound reduction cover in the top end output port of air source heat pump main body, can effectively absorb and block the noise generated when heat pump operates, significantly reduce noise pollution, create quiet atmosphere for surrounding environment, expand the application scene of air source heat pump in residential area, school, hospital and other noise sensitive areas.

This utility model relates to the field of anti-resonance noise reduction motor stator technology, and particularly to an anti-resonance noise reduction motor stator, solving the problem in the prior art where changes in the gap between the stator and the magnetic mechanism cause structural instability, vibration, and resonance-induced noise. The anti-resonance noise reduction motor stator includes a housing, a stator assembly inside the housing, an outer sleeve inside the stator assembly, a magnetic layer inside the outer sleeve, a buffer layer between the outer sleeve and the magnetic layer, a rotating shaft inside the magnetic layer, a protruding ring fixedly connected inside the housing, and a receiving groove at the inner bottom of the housing, with several vibration damping blocks fixedly connected inside the receiving groove. This utility model ensures that the gap between the stator assembly and the outer sleeve remains constant, thereby guaranteeing the stability of the stator assembly, preventing resonance with external equipment, and preventing vibration from affecting the use of the motor stator during operation while also reducing noise.