Three-phase asynchronous motor with a silent function

Abstract

The utility model discloses a three -phase asynchronous motor with mute function relates to three -phase asynchronous motor technical field, the utility model discloses a three -phase asynchronous motor still includes: noise reduction mechanism, noise reduction mechanism sets up in the tail of three -phase asynchronous motor, and noise reduction mechanism is used for the noise of tail portion to carry out noise reduction, and sound absorption mechanism, sound absorption mechanism sets up in the output site of three -phase asynchronous motor, the utility model discloses the dust cover is positioned and is inserted with the positioning boss through the U -shaped block of inside, then the dust cover is fixed through screw, and the dust cover is limited with the cooperation of U -shaped block and positioning boss, reduces the shaking of dust cover, and the rubber pad can play the effect of shock attenuation when shaking, improves the mute effect, and the sound absorption cotton is in the rotation of radiating fan, absorbs the noise generated, improves the mute effect again, reduces the noise pollution in working environment greatly, thereby guarantees the comfort degree of staff.

Description

Technical Field

[0001] This utility model belongs to the technical field of three-phase asynchronous motors, and in particular relates to a three-phase asynchronous motor with a silent function. Background Technology

[0002] Three-phase asynchronous motors are a type of induction motor that are powered by three-phase AC current (120-degree phase difference) connected to the same source. Their core characteristic is that the rotor and stator rotating magnetic fields rotate in the same direction but at different speeds, resulting in slip. Hence the name "asynchronous". They are widely used as the power source for major mechanical drives in industries such as chemical, textile, metallurgy, construction, agricultural machinery, mining, and light industry.

[0003] Existing three-phase asynchronous motors typically generate a lot of noise during use. The main source of this noise is the vibration and noise produced by the rotating cooling fan. The dust cover of the cooling fan also vibrates continuously and generates noise. This noise over a long period of time can have a serious impact on the working environment. Furthermore, prolonged exposure to noise can reduce the working condition of staff and affect their work efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a three-phase asynchronous motor with a silent function. The dust cover is positioned and inserted into the inner U-shaped block and the positioning protrusion, and then the dust cover is fixed with screws. The cooperation between the U-shaped block and the positioning protrusion restricts the dust cover and reduces its shaking. The rubber pad can also play a vibration damping role when shaking, improving the silent effect. The sound-absorbing cotton absorbs the noise generated when the cooling fan rotates, further improving the silent effect. This significantly reduces noise pollution in the working environment, thereby ensuring the comfort of the staff. It solves the problem that the main source of noise in the use of existing three-phase asynchronous motors is the vibration and noise generated by the rotation of the cooling fan. In addition, the dust cover of the cooling fan also generates continuous vibration and noise, and the noise generated over a long period of time will have a serious impact on the working environment.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a three-phase asynchronous motor with a silent operation function, comprising a three-phase asynchronous motor, and further comprising:

[0007] A noise reduction mechanism, wherein the noise reduction mechanism is disposed at the tail end of a three-phase asynchronous motor, the noise reduction mechanism being used to reduce noise at the tail end; and

[0008] A sound-absorbing mechanism is installed at the output end of a three-phase asynchronous motor. The sound-absorbing mechanism is used to reduce noise when the output end of the three-phase asynchronous motor rotates.

[0009] Furthermore, the noise reduction mechanism includes a dust cover fitted onto the tail of the three-phase asynchronous motor. The tail of the three-phase asynchronous motor is provided with a tail shaft, and a cooling fan is provided on the tail shaft. Several positioning protrusions are fixedly connected to the tail of the three-phase asynchronous motor. Several sound-absorbing cotton pieces and several U-shaped blocks are fixedly connected to the inside of the dust cover. Rubber pads are fitted inside the U-shaped blocks. The sound-absorbing cotton pieces absorb the noise generated when the cooling fan rotates.

[0010] Furthermore, the dust cover is fixedly connected to the three-phase asynchronous motor by screws, and the U-shaped block is positioned and inserted into the positioning protrusion. After the U-shaped block and the positioning protrusion are inserted, the surface of the rubber pad will contact the surface of the positioning protrusion. The cooperation between the U-shaped block and the positioning protrusion will restrict the dust cover and reduce the shaking of the dust cover, and the rubber pad can play a vibration damping role when shaking.

[0011] Furthermore, several positioning grooves are provided on the outer side of the tail shaft, and several plugs are fixedly connected to the side of the cooling fan facing the tail shaft. The plugs are positioned and inserted into the positioning grooves, and the cooling fan is fixedly connected to the tail shaft by bolts. By positioning and inserting the cooling fan into the positioning grooves on the tail shaft through the plugs, the cooling fan is stably connected to the tail shaft. This method can restrict the cooling fan, making the rotation of the cooling fan by the tail shaft more stable and reducing the occurrence of shaking.

[0012] Furthermore, the sound-absorbing mechanism includes a fixed ring fixedly connected to the left side of the three-phase asynchronous motor. A cover plate is provided on the left side of the fixed ring, and sound-absorbing cotton II is embedded inside the fixed ring. Sound-absorbing cotton III is embedded on the right side of the cover plate. Sound-absorbing cotton II and sound-absorbing cotton III will silence the output end of the three-phase asynchronous motor when it is working.

[0013] Furthermore, a convex ring is fixedly connected to the right side of the cover plate, and a convex plate is fixedly connected to the outer ring of the cover plate. The cover plate is inserted into the inner ring of the fixed ring through the convex ring, and the cover plate is fixedly connected to the fixed ring through bolts. A circular hole is set at the center of the cover plate, and the circular hole on the cover plate is inserted into the output shaft of the three-phase asynchronous motor, and a gap is left between the circular hole on the cover plate and the output shaft. The convex plate is set to facilitate the operator to pull the cover plate and assist in the disassembly of the cover plate.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model uses an inner U-shaped block and a positioning protrusion to position and insert the dust cover, and then fixes the dust cover with screws. The U-shaped block and the positioning protrusion cooperate to restrict the dust cover and reduce its shaking. The rubber pad can also play a vibration damping role when shaking, improving the quietness effect. The sound-absorbing cotton absorbs the noise generated when the cooling fan rotates, further improving the quietness effect. This greatly reduces noise pollution in the working environment, thereby ensuring the comfort of the staff.

[0016] 2. This utility model connects the cover plate to the inner side of the fixed ring via a convex ring and locks the cover plate onto the fixed ring with bolts. The sound-absorbing cotton 2 inside the fixed ring and the sound-absorbing cotton 3 on the cover plate will mute the output end of the three-phase asynchronous motor when it is working, thereby improving the noise reduction effect of the three-phase asynchronous motor. At the same time, the cover plate is detachable, which facilitates subsequent maintenance.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

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

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the tail section structure of the three-phase asynchronous motor of this utility model;

[0021] Figure 3 This is a schematic diagram of the overall structure of the tail shaft of this utility model;

[0022] Figure 4 This is a schematic diagram of the overall structure of the cooling fan of this utility model;

[0023] Figure 5 This is a schematic diagram of the inner structure of the dust cover of this utility model;

[0024] Figure 6 This is a schematic diagram of the inner structure of the fixing ring of this utility model;

[0025] Figure 7 This is a schematic diagram of the overall structure of the cover plate of this utility model.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Three-phase asynchronous motor; 2. Noise reduction mechanism; 21. Dust cover; 211. Sound-absorbing cotton one; 212. U-shaped block; 213. Rubber pad; 22. Cooling fan; 221. Insert block; 23. Positioning protrusion; 24. Tail shaft; 241. Positioning groove; 3. Sound absorption mechanism; 31. Fixing ring; 311. Sound-absorbing cotton two; 32. Cover plate; 321. Protruding ring; 322. Sound-absorbing cotton three; 33. Protruding plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] Please see Figures 1-7 As shown, this utility model is a three-phase asynchronous motor with a silent function, including a three-phase asynchronous motor 1, and further including:

[0030] Noise reduction mechanism 2 is installed at the tail end of the three-phase asynchronous motor 1, and is used to reduce noise at the tail end; and

[0031] The sound-absorbing mechanism 3 is installed at the output end of the three-phase asynchronous motor 1. The sound-absorbing mechanism 3 is used to reduce noise when the output end of the three-phase asynchronous motor 1 rotates.

[0032] The noise reduction mechanism 2 includes a dust cover 21 fitted onto the tail of a three-phase asynchronous motor 1. The tail of the three-phase asynchronous motor 1 is provided with a tail shaft 24, on which a cooling fan 22 is mounted. Several positioning protrusions 23 are fixedly connected to the tail of the three-phase asynchronous motor 1. Several sound-absorbing cotton 211 and several U-shaped blocks 212 are fixedly connected to the inside of the dust cover 21. Rubber pads 213 are fitted inside the U-shaped blocks 212. The dust cover 21 is positioned and inserted into the positioning protrusions 23 via the U-shaped blocks 212 on the inside, and then the dust cover 21 is fixed with screws. The cooperation between the U-shaped blocks 212 and the positioning protrusions 23 restricts the dust cover 21, reducing its shaking. The rubber pads 213 can also dampen vibrations when shaking, improving the noise reduction effect. The sound-absorbing cotton 211 absorbs the noise generated when the cooling fan 22 rotates, further improving the noise reduction effect and significantly reducing noise pollution in the working environment, thereby ensuring the comfort of the staff.

[0033] The dust cover 21 is fixedly connected to the three-phase asynchronous motor 1 by screws. The U-shaped block 212 is positioned and inserted into the positioning protrusion 23. After the U-shaped block 212 is inserted into the positioning protrusion 23, the surface of the rubber pad 213 will contact the surface of the positioning protrusion 23.

[0034] Several positioning slots 241 are provided on the outer side of the tail shaft 24. Several plugs 221 are fixedly connected to the side of the cooling fan 22 facing the tail shaft 24. The plugs 221 are positioned and plugged into the positioning slots 241. The cooling fan 22 is fixedly connected to the tail shaft 24 by bolts.

[0035] The sound-absorbing mechanism 3 includes a fixed ring 31 fixedly connected to the left side of the three-phase asynchronous motor 1. A cover plate 32 is provided on the left side of the fixed ring 31. Sound-absorbing cotton 311 is embedded inside the fixed ring 31, and sound-absorbing cotton 322 is embedded on the right side of the cover plate 32. By connecting the cover plate 32 to the inside of the fixed ring 31 through the protruding ring 321 and locking the cover plate 32 to the fixed ring 31 with bolts, the sound-absorbing cotton 311 inside the fixed ring 31 and the sound-absorbing cotton 322 on the cover plate 32 will mute the output end of the three-phase asynchronous motor 1 when it is working, thereby improving the noise reduction effect of the three-phase asynchronous motor 1. At the same time, the cover plate 32 is detachable for easy maintenance.

[0036] A protruding ring 321 is fixedly connected to the right side of the cover plate 32, and a protruding plate 33 is fixedly connected to the outer ring of the cover plate 32. The cover plate 32 is inserted into the inner ring of the fixed ring 31 through the protruding ring 321. The cover plate 32 is fixedly connected to the fixed ring 31 by bolts. A round hole is set at the center of the cover plate 32. The round hole on the cover plate 32 is inserted into the output shaft of the three-phase asynchronous motor 1, and a gap is left between the round hole on the cover plate 32 and the output shaft.

[0037] One specific application of this embodiment is:

[0038] In use, the cooling fan 22 is positioned and inserted into the positioning groove 241 on the tail shaft 24 via the insert 221, ensuring a stable connection between the cooling fan 22 and the tail shaft 24. This method effectively restricts the cooling fan 22. Finally, bolts are used to lock the cooling fan 22 and tail shaft 24 together, making the rotation of the cooling fan 22 by the tail shaft 24 more stable and reducing shaking. The dust cover 21 is then positioned and inserted into the positioning protrusion 23 via the inner U-shaped block 212, which will then engage with the positioning protrusion 23. The positioning protrusion 23 contacts the surface of the dust cover 21 and then fixes it to the three-phase asynchronous motor 1 with screws. The U-shaped block 212 will cooperate with the positioning protrusion 23 to restrict the dust cover 21 and reduce the shaking of the dust cover 21. The rubber pad 213 can play a vibration damping effect when shaking, improving the quietness effect. The sound-absorbing cotton 211 absorbs the noise generated when the cooling fan 22 rotates, further improving the quietness effect and greatly reducing noise pollution in the working environment, thereby ensuring the comfort of the staff.

[0039] Meanwhile, the cover plate 32 is connected to the inner side of the fixing ring 31 through the convex ring 321, and the cover plate 32 is locked and fixed on the fixing ring 31 with bolts. Then, the sound-absorbing cotton 311 inside the fixing ring 31 and the sound-absorbing cotton 322 on the cover plate 32 will mute the output end of the three-phase asynchronous motor 1 when it is working, further improving the noise reduction effect of the three-phase asynchronous motor 1. In addition, the cover plate 32 is detachable, which facilitates the subsequent maintenance of the sound-absorbing cotton 311 and the sound-absorbing cotton 322. At the same time, this method will not affect the rotation of the output end.

[0040] It should be noted that the sound-absorbing cotton 1 211, sound-absorbing cotton 2 311 and sound-absorbing cotton 3 322 in this application are all porous acoustic materials, which are filled with a large number of interconnected micropores. These pores are distributed in a three-dimensional network to form a complex network of air channels. When sound waves enter the pores, the air molecules vibrate in the pores and rub against the fibers on the pore walls. At the same time, affected by the air viscosity resistance, the sound energy is gradually converted into heat energy, thereby achieving the sound absorption effect.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A three-phase asynchronous motor with silent operation function, comprising a three-phase asynchronous motor, characterized in that, Also includes: A noise reduction mechanism, wherein the noise reduction mechanism is disposed at the tail end of a three-phase asynchronous motor, the noise reduction mechanism being used to reduce noise at the tail end; and A sound-absorbing mechanism is installed at the output end of a three-phase asynchronous motor. The sound-absorbing mechanism is used to reduce noise when the output end of the three-phase asynchronous motor rotates.

2. A three-phase asynchronous motor with silent operation function according to claim 1, characterized in that, The noise reduction mechanism includes a dust cover fitted onto the tail of a three-phase asynchronous motor. The tail of the three-phase asynchronous motor is provided with a tail shaft, and a cooling fan is provided on the tail shaft. Several positioning protrusions are fixedly connected to the tail of the three-phase asynchronous motor. Several sound-absorbing cotton and several U-shaped blocks are fixedly connected to the inside of the dust cover. A rubber pad is fitted on the inside of the U-shaped blocks.

3. A three-phase asynchronous motor with silent operation function according to claim 2, characterized in that, The dust cover is fixedly connected to the three-phase asynchronous motor by screws. The U-shaped block is positioned and inserted into the positioning protrusion. After the U-shaped block is inserted into the positioning protrusion, the surface of the rubber pad will contact the surface of the positioning protrusion.

4. A three-phase asynchronous motor with silent operation function according to claim 3, characterized in that, The tail shaft has several positioning slots on its outer side. The cooling fan is fixedly connected to several plugs on the side facing the tail shaft. The plugs are positioned and inserted into the positioning slots. The cooling fan is fixedly connected to the tail shaft by bolts.

5. A three-phase asynchronous motor with silent operation according to claim 4, characterized in that, The sound-absorbing mechanism includes a fixed ring fixedly connected to the left side of the three-phase asynchronous motor. A cover plate is provided on the left side of the fixed ring, and sound-absorbing cotton 2 is embedded inside the fixed ring. Sound-absorbing cotton 3 is embedded on the right side of the cover plate.

6. A three-phase asynchronous motor with silent operation according to claim 5, characterized in that, A protruding ring is fixedly connected to the right side of the cover plate, and a protruding plate is fixedly connected to the outer ring of the cover plate. The cover plate is inserted into the inner ring of the fixed ring through the protruding ring, and the cover plate is fixedly connected to the fixed ring through bolts.

7. A three-phase asynchronous motor with silent operation function according to claim 5, characterized in that, The cover plate has a circular hole at its center, which is inserted into the output shaft of the three-phase asynchronous motor, with a gap between the circular hole and the output shaft.

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