A magnetic levitation blower noise reduction structure

Abstract

The utility model provides a kind of magnetic levitation blower noise reduction structure, it is related to magnetic levitation blower noise reduction technical field, including: blower fan;Left end of blower fan is equipped with exhaust port, and a circle of thread groove is equipped around exhaust port. By sound-absorbing panel cylinder and sound-absorbing port preliminary interception and absorption, it can effectively weaken initial noise intensity, reduce the direct propagation of high frequency and medium-high frequency noise;Subsequently, noise enters the inside of equipment, and then, secondary deep noise reduction is carried out by sound-absorbing cylinder and sound-absorbing hole, further capture and eliminate residual noise not absorbed initially, especially effectively inhibit low-frequency noise generated by airflow vibration, solve the problem that the exhaust port of magnetic levitation blower generates relatively large noise when running, so sound-absorbing noise reduction needs to be carried out at the exhaust port of blower fan, otherwise, relatively large noise will bring relatively large adverse effects to surrounding personnel and environment.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction technology for magnetic levitation blowers, and in particular to a noise reduction structure for magnetic levitation blowers. Background Technology

[0002] Magnetic levitation blowers, as highly efficient fluid transport devices that utilize magnetic levitation bearing technology to enable contactless high-speed impeller rotation, are widely used in wastewater treatment, textiles, chemicals, food, and pharmaceuticals due to their advantages such as frictionlessness, high efficiency, and maintenance-free operation. However, their high-speed characteristics also bring significant noise problems. These noises mainly originate from aerodynamic noise generated by the high-speed rotating impeller, electromagnetic noise generated by the electromagnetic vibration of the motor, and mechanical noise generated by the vibration of various components. Among these, aerodynamic noise has the highest intensity and the widest frequency band, making it the primary noise source. This intense noise not only pollutes the working environment and affects the physical and mental health of operators but also limits the application of the equipment in noise-sensitive areas. In existing technologies, conventional noise reduction methods, such as installing simple silencers at the inlet and outlet or adding soundproof covers to the entire machine, often have drawbacks such as limited noise reduction effect, complex structure, high cost, or affecting equipment heat dissipation and maintenance convenience. It is difficult to achieve comprehensive and effective noise control while ensuring equipment performance and reliability.

[0003] During the use of magnetic levitation blowers, the exhaust port generates a lot of noise. Therefore, sound absorption and noise reduction are required at the exhaust port of the blower. Otherwise, the loud noise will have a significant adverse impact on the surrounding people and environment. Utility Model Content

[0004] This utility model relates to a noise reduction structure for a magnetic levitation blower. The noise generated by the magnetic levitation blower during operation is first initially intercepted and absorbed by the sound-absorbing plate and sound-absorbing port, which can effectively weaken the initial noise intensity and reduce the direct propagation of high-frequency and mid-high-frequency noise. Subsequently, after the noise enters the equipment, it undergoes secondary deep noise reduction through the sound-absorbing cylinder and sound-absorbing holes, further capturing and eliminating residual noise that was not initially absorbed, especially effectively suppressing low-frequency noise generated by airflow vibration. Finally, the protective cover with noise reduction function ensures the safe operation of the equipment while dispersing and smoothly discharging the airflow after the two noise reduction treatments, avoiding the generation of new turbulent noise when the airflow is discharged at high speed. Ultimately, it achieves a full-process noise reduction effect from noise source interception, intermediate process elimination to end-of-line airflow optimization, significantly reducing the overall operating noise value of the equipment and creating a quieter living environment for the surrounding environment.

[0005] In a first aspect, this utility model provides a noise reduction structure for a magnetic levitation blower, specifically comprising: a blower; an exhaust port is provided at the left end of the blower, and a threaded groove is provided around the exhaust port; an exhaust pipe is fixedly installed at the exhaust port of the blower; a threaded hole is provided on the left side of the exhaust pipe; a sound-absorbing cylinder is slidably installed in the inner cavity of the exhaust pipe; a sound-absorbing plate is installed in the inner cavity of the sound-absorbing cylinder, and sound-absorbing holes are evenly provided on the annular sidewall of the sound-absorbing plate. A connecting ring is fixedly installed on the right side of the sound-absorbing panel, and a limiting ring is fixedly installed on the right side of the connecting ring; a fixed plate is installed on the left side of the exhaust pipe, and a ring of round holes is opened at the edge of the fixed plate; a protective cover is fixedly installed on the left side of the fixed plate, and filter holes are evenly opened on the left side of the protective cover; exhaust holes are evenly opened on the annular side wall of the protective cover.

[0006] Furthermore, a stabilizing plate is fixedly installed at the right end of the annular sidewall of the exhaust pipe, and a ring of circular holes is opened on the stabilizing plate, with through bolts inserted into the circular holes of the stabilizing plate.

[0007] Furthermore, slots are evenly provided on the left side wall of the exhaust pipe, and guide strips are evenly fixedly installed on the inner side wall of the exhaust pipe.

[0008] Furthermore, guide grooves are evenly provided on the annular sidewall at the outer end of the sound-absorbing cylinder, and sound-absorbing holes are evenly provided on the annular sidewall of the sound-absorbing cylinder.

[0009] Furthermore, a fixing ring plate is fixedly installed at the right end of the inner wall of the sound-absorbing tube, and a limiting ring groove is opened on the left side of the fixing ring plate.

[0010] Furthermore, clamping plates are evenly fixed on the right side wall of the fixing plate, and long screws are inserted through the circular holes around the fixing plate.

[0011] This utility model provides a noise reduction structure for a magnetic levitation blower, which has the following beneficial effects: In this invention, the noise generated by the magnetic levitation blower during operation is first initially intercepted and absorbed by the sound-absorbing plate and sound-absorbing port, effectively weakening the initial noise intensity and reducing the direct propagation of high-frequency and mid-high-frequency noise. Subsequently, after the noise enters the equipment, it undergoes secondary deep noise reduction through the sound-absorbing cylinder and sound-absorbing holes, further capturing and eliminating residual noise that was not initially absorbed, especially effectively suppressing low-frequency noise generated by airflow vibration. Finally, the protective cover with noise reduction function ensures the safe operation of the equipment while dispersing and smoothly discharging the airflow after the two noise reduction treatments, avoiding the generation of new turbulent noise when the airflow is discharged at high speed. Ultimately, it achieves a full-process noise reduction effect from noise source interception, intermediate process elimination to terminal airflow optimization, significantly reducing the overall operating noise value of the equipment and creating a quieter living environment for the surrounding environment.

[0012] Noise first enters the cylinder through the annular sound-absorbing port on the side wall of the sound-absorbing plate, where it is absorbed by the high-efficiency sound-absorbing material, thus initially reducing the noise intensity. Subsequently, as the airflow passes through the sound-absorbing cylinder, some noise re-enters through the sound-absorbing holes on the annular side wall, where it is further absorbed by the sound-absorbing material, effectively eliminating most of the noise. Finally, the airflow carrying residual noise reaches the protective cover, where it is dispersed and gently discharged through the exhaust holes on the annular side wall of the protective cover, significantly reducing secondary noise that may be caused by high-speed concentrated exhaust. Attached Figure Description

[0013] To more clearly illustrate the technical solution of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0014] In the attached diagram: Figure 1 A schematic diagram of the left front upper axis view structure of this application is shown; Figure 2 This paper shows a disassembled structural diagram of the exhaust pipe, sound absorber, and fixing plate of this application; Figure 3 A cross-sectional structural schematic diagram of the sound-absorbing tube portion of this application is shown; Figure 4 A schematic diagram of the exploded structure of this application is shown.

[0015] List of reference numerals 1. Blower; 2. Exhaust pipe; 201. Stabilizing plate; 202. Slot; 203. Guide strip; 3. Sound-absorbing cylinder; 301. Guide groove; 302. Sound-absorbing hole; 303. Fixing ring plate; 304. Restricting ring groove; 305. Sound-absorbing plate cylinder; 306. Sound-absorbing port; 307. Connecting ring; 308. Restricting insertion ring; 4. Fixing plate; 401. Slot plate; 402. Long screw; 403. Protective cover. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Example 1: Please refer to Figures 1 to 4 : This utility model proposes a noise reduction structure for a magnetic levitation blower, comprising: a blower 1; an exhaust port is provided at the left end of the blower 1, and a threaded groove is provided around the exhaust port; an exhaust pipe 2 is fixedly installed at the exhaust port of the blower 1; a threaded hole is provided on the left side of the exhaust pipe 2; a sound-absorbing cylinder 3 is slidably installed in the inner cavity of the exhaust pipe 2; guide grooves 301 are evenly provided on the annular sidewall of the outer end of the sound-absorbing cylinder 3, sound-absorbing holes 302 are evenly provided on the annular sidewall of the sound-absorbing cylinder 3, a fixing ring plate 303 is fixedly installed at the right end of the inner sidewall of the sound-absorbing cylinder 3, and a limiting ring groove 304 is provided on the left side of the fixing ring plate 303; a sound-absorbing plate cylinder 305 is installed in the inner cavity of the sound-absorbing cylinder 3, and the sound-absorbing plate cylinder... The annular sidewall of 305 is evenly provided with sound-absorbing ports 306; when the sound-absorbing plate cylinder 305 is installed in the inner cavity of the sound-absorbing cylinder 3, grasp the left end of the sound-absorbing plate cylinder 305 and move it to the right, move the connecting ring 307 and the limiting ring 308 at the right end of the sound-absorbing plate cylinder 305 to the right, so that the sidewall of the connecting ring 307 and the fixing ring plate 303 are in contact, and at the same time, the limiting ring 308 will also be inserted into the limiting ring groove 304, so that the sound-absorbing plate cylinder 305 is firmly installed in the sound-absorbing cylinder 3. The connecting ring 307 is fixedly installed on the right side of the sound-absorbing plate cylinder 305, and the limiting ring 308 is fixedly installed on the right side of the connecting ring 307; a fixing plate 4 is installed on the left side of the exhaust pipe 2, and a ring of round holes is opened at the edge of the fixing plate 4.

[0018] A stabilizing plate 201 is fixedly installed at the right end of the annular sidewall of the exhaust pipe 2. The stabilizing plate 201 has a ring of circular holes, and a through bolt is inserted into the circular holes of the stabilizing plate 201. The bolt on the stabilizing plate 201 is rotated and inserted into the threaded groove at the left end of the blower 1 to fix and restrict the stabilizing plate 201 and the exhaust pipe 2. The exhaust pipe 2 will not move when touched. The left sidewall of the exhaust pipe 2 has evenly spaced slots 202. The inner sidewall of the exhaust pipe 2 has evenly fixed guide strips 203. The guide strips 203 are slidably installed in the guide grooves 301. When the sound-absorbing cylinder 3 slides left and right, the guide grooves 301 on the sound-absorbing cylinder 3 are restricted by the guide strips 203. The sound-absorbing cylinder 3 can only slide left and right to prevent the sound-absorbing cylinder 3 from deviating or tilting when sliding left and right.

[0019] The fixed plate 401 is evenly fixedly installed on the right side wall of the fixed plate 4. Long screws 402 are inserted through the circular holes of the fixed plate 4. First, the clamping plate 401 is clamped into the clamping groove 202. Then, the long screws 402 on the fixed plate 4 are rotated and inserted into the threaded holes on the left side of the exhaust pipe 2 to fix and restrict the fixed plate 4. When the fixed plate 4 is touched, it will not be displaced or fall off. The left side of the fixed plate 4 is fixedly installed with a protective cover 403. The left side of the protective cover 403 is evenly provided with filter holes. The annular side wall of the protective cover 403 is evenly provided with exhaust holes. The gas in the exhaust pipe 2 will be discharged outward from the exhaust holes and filter holes of the protective cover 403 on the left side of the fixed plate 4.

[0020] Example 2, based on Example 1, such as Figure 1 and Figure 4 As shown, a stabilizing plate 201 is fixedly installed at the right end of the annular sidewall of the exhaust pipe 2. A ring of circular holes is opened on the stabilizing plate 201, and a through bolt is inserted into the circular holes of the stabilizing plate 201. After removing the stabilizing plate 201 and the bolt, the exhaust pipe 2 is fixedly welded to the blower 1 to stabilize and restrict the exhaust pipe 2. In this way, the exhaust pipe 2 will not fall off when touched, avoiding the bolt from loosening and failing to stabilize the exhaust pipe 2 after long-term use, and also saving the cost of parts.

[0021] The working principle of this embodiment is as follows: When in use, the airflow generated by the blower 1 enters the inner cavity of the exhaust pipe 2 from the exhaust port. The airflow flows to the left along the exhaust pipe 2, passes through the sound-absorbing cylinder 3 and the fixed plate 4 in sequence, and is finally discharged outward from the exhaust hole and filter hole of the protective cover 403, forming a stable exhaust path. Part of the airflow passes through the sound-absorbing plate cylinder 305, and the noise is absorbed by the sound-absorbing material inside the sound-absorbing plate cylinder 305 through the sound-absorbing port 306 on the annular sidewall of the sound-absorbing plate cylinder 305, initially reducing the noise intensity. At the same time, when the airflow flows through the sound-absorbing cylinder 3, part of the noise enters the interior of the sound-absorbing cylinder 3 through the sound-absorbing hole 302 on the annular sidewall of the sound-absorbing cylinder 3. After absorbing most of the noise, the airflow and the remaining noise reach the protective cover 403. The filter holes of the protective cover 403 can filter out tiny impurities in the airflow, and the exhaust holes on its annular sidewall disperse the airflow and reduce the secondary noise generated when the airflow is discharged at high speed. In addition, the protective cover 403 can also prevent foreign objects from entering the exhaust pipe 2 and the interior of the sound-absorbing cylinder 3, protecting the noise reduction components from damage.

[0022] The following points should be noted in this article: 1. The accompanying drawings of this utility model embodiment only involve the structure involved in this utility model embodiment; other structures can refer to general designs.

[0023] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0024] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A noise reduction structure for a magnetic levitation blower, comprising: A blower (1); an exhaust port is provided at the left end of the blower (1), and a threaded groove is provided around the exhaust port; an exhaust pipe (2) is fixedly installed at the exhaust port of the blower (1); a threaded hole is provided on the left side of the exhaust pipe (2); characterized in that a sound-absorbing cylinder (3) is slidably installed in the inner cavity of the exhaust pipe (2); a sound-absorbing plate cylinder (305) is installed in the inner cavity of the sound-absorbing cylinder (3), and sound-absorbing ports (306) are evenly provided on the annular sidewall of the sound-absorbing plate cylinder (305); a connecting ring (307) is fixedly installed on the right side of the sound-absorbing plate cylinder (305), and a limiting insert ring (308) is fixedly installed on the right side of the connecting ring (307); a fixing plate (4) is installed on the left side of the exhaust pipe (2), and a ring of round holes is provided at the edge of the fixing plate (4).

2. The noise reduction structure for a magnetic levitation blower according to claim 1, characterized in that: A stabilizing plate (201) is fixedly installed at the right end of the annular sidewall of the exhaust pipe (2), and a ring of round holes is opened on the stabilizing plate (201), and a through bolt is inserted into the round hole of the stabilizing plate (201).

3. The noise reduction structure for a magnetic levitation blower according to claim 1, characterized in that: The exhaust pipe (2) has slots (202) evenly provided on the left side wall, and guide strips (203) are evenly fixedly installed on the inner side wall of the exhaust pipe (2).

4. The noise reduction structure for a magnetic levitation blower according to claim 1, characterized in that: The sound-absorbing cylinder (3) has guide grooves (301) evenly opened on the annular sidewall at the outer end, and sound-absorbing holes (302) evenly opened on the annular sidewall.

5. The noise reduction structure for a magnetic levitation blower according to claim 1, characterized in that: A fixing ring plate (303) is fixedly installed at the right end of the inner wall of the sound-absorbing tube (3), and a limiting ring groove (304) is opened on the left side of the fixing ring plate (303).

6. The noise reduction structure for a magnetic levitation blower according to claim 1, characterized in that: The right side wall of the fixed plate (4) is uniformly fixed with a card plate (401), and a long screw (402) is inserted into a circle of holes in the fixed plate (4).

7. The noise reduction structure for a magnetic levitation blower according to claim 1, characterized in that: A protective cover (403) is fixedly installed on the left side of the fixed plate (4), and filter holes are evenly opened on the left side of the protective cover (403). Exhaust holes are evenly opened on the annular sidewall of the protective cover (403).

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