Large-air-volume low-noise air blower

Abstract

The utility model provides a large air volume low noise blower relates to blower technical field, including motor, soundproof cotton cover and soundproof outer cover, the motor is installed in the center of inner air chamber, and the front side face center of inner air chamber is equipped with the air inlet cylinder, the outside of inner air chamber is equipped with the hood, and the outside of hood is equipped with the soundproof cotton cover, and the soundproof outer cover is equipped with the soundproof cotton cover. The lower ends of the supporting legs are fixed to a bottom plate, a cushion block is arranged at the bottom of the bottom plate, a rotating shaft is installed on the front portion of a motor, an impeller is installed on the rotating shaft, the rotating shaft on the front portion of the motor and the impeller are both located in an air inlet barrel, and multiple sets of inner through openings are formed in the inner wall of the rear portion of the air inlet barrel. The surrounding type multiple sound insulation and noise reduction treatment is adopted, contact noise between flowing air flow and the inner wall is reduced firstly, then most noise is absorbed through the sound absorption cotton, then part of sound waves are prevented from being transmitted out through the sound insulation triangular plates in the sound blocking chamber, and noise treatment is more efficient and practical.

Description

Technical Field

[0001] The utility model relates to the technical field of blowers, in particular to a blower with large air volume and low noise. Background Art

[0002] A blower consists of six main parts: a motor, air filter, blower body, air chamber, base (which also serves as an oil tank), and oil drip nozzle. The blower operates by eccentrically offsetting the rotor within the cylinder, drawing in, compressing, and expelling air through the volume changes between the blades in the rotor slots.

[0003] In the manual of a low-noise blower in the prior art (publication number CN213838964U), it is mentioned that "an inspection panel is provided on one side of the fan housing, an air inlet is provided on the outside of the inspection panel, the air inlet is connected to the fan housing, the air inlet is fixedly connected after passing through the inspection panel by a number of fixing bolts, and is screwed together with the fan housing, a motor is provided on the other side of the fan housing, a junction box is provided above the motor, a noise reduction gasket is provided at the edge of the inspection panel close to the fan housing, a number of noise reduction pads are symmetrically provided on the bottom of the base, and the noise reduction pads are bonded to the base by glue", but the noise reduction gaskets of the blower in the prior art have insufficient noise reduction and sound insulation effects, are not suitable for use in blowers with large air volume, and do not reduce noise efficiently. Utility Model Content

[0004] In order to overcome the defects of the existing technology, a large air volume and low noise blower is provided to solve the problem that the noise reduction gasket of the blower in the existing technology has insufficient noise reduction and sound insulation effect, is not suitable for use in large air volume blowers, and does not effectively reduce noise.

[0005] To achieve the above-mentioned purpose, a large-air-volume, low-noise blower is provided, comprising a motor, a sound-insulating cotton sleeve and a sound-insulating outer cover, wherein the motor is installed in the center of an inner air cavity, and an air inlet is provided at the center of the front side of the inner air cavity, an organic cover is provided on the outside of the inner air cavity, and a sound-insulating cotton sleeve is provided on the outside of the organic cover, the outer cover of the sound-insulating cotton sleeve is provided with a sound-insulating outer cover, and a support leg is fixed to the lower part of the outer ring surface of the sound-insulating outer cover, the lower end of the support leg is fixed to the base plate, and a pad is provided at the bottom of the base plate.

[0006] Furthermore, a rotating shaft is installed at the front of the motor, and an impeller is installed on the rotating shaft. The rotating shaft and impeller at the front of the motor are both located in the air inlet tube, and multiple groups of internal openings are opened on the rear inner wall of the air inlet tube.

[0007] Furthermore, a protective net is provided at the front port of the air inlet duct, and the protective net adopts a mesh structure made of stainless steel.

[0008] Furthermore, a lower connecting pipe is connected to the lower right corner of the inner air cavity, and an air outlet is provided at the right end of the lower connecting pipe.

[0009] Further, the inner ring wall of the machine cover is provided with an inner rubber skin layer, and the inner rubber skin layer adopts a rubber layer structure with a thickness of 2-3 mm.

[0010] Further, the sound insulation cotton sleeve adopts sound absorption cotton material.

[0011] Further, the sound insulation cover is provided with a sound resistance chamber, and a plurality of sound resistance triangular pieces are arranged in the sound resistance chamber.

[0012] The utility model discloses the beneficial effect lies in:

[0013] 1. The utility model discloses a motor rotates the pivot, drives the impeller from the air inlet pipe place and draws the outside air flow into the inner air cavity, and the inner air cavity is linked together with the lower connecting pipe, and the inner air cavity content volume is big, and the air flow of drawing and sending is also big, and the big -wind -volume air blowing work is convenient.

[0014] 2. The utility model discloses the machine cover is close to and is on the inner ring wall of machine cover, can reduce the noise produced between the air flow and the inner wall of machine cover, then utilizes the sound insulation cotton sleeve and carries out the surrounding sound absorption treatment, then utilizes the sound resistance triangular piece and carries out the transmission of reducing sound, utilizes the sound resistance chamber and blocks the sound in its inside, helps the efficient noise reduction treatment. DRAWINGS

[0015] Figure 1 It is the front view schematic drawing of the utility model embodiment;

[0016] Figure 2 It is the rear view schematic drawing of the utility model embodiment;

[0017] Figure 3 It is the top view schematic drawing of the utility model embodiment;

[0018] Figure 4 It is the section schematic drawing of the utility model embodiment.

[0019] In the drawing: 1, motor;10, air inlet pipe;11, inner through port;12, inner air cavity;13, inner rubber skin layer;14, machine cover;15, lower connecting pipe;16, air outlet;17, support leg;18, bottom plate;19, cushion block;100, protective net;2, sound insulation cotton sleeve;3, sound insulation cover;30, sound resistance chamber;31, sound resistance triangular piece. CONCRETE IMPLEMENTING METHOD

[0020] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer, the utility model is further described in detail below in combination with the drawings and examples. The specific examples described herein are only used to explain the utility model and are not used to limit the utility model. Specific details such as specific system structures and technologies are proposed so as to more thoroughly understand the utility model examples. The described examples are part of the embodiments of the disclosure, not all the embodiments. However, it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. Based on the examples in the disclosure, all other examples obtained by those skilled in the art without creative labor are within the protection scope of the disclosure.

[0021] The specific embodiments of the utility model are described in detail below in combination with the drawings.

[0022] Figure 1 is a front view schematic diagram of the utility model embodiment, Figure 2 is a rear view schematic diagram of the utility model embodiment, Figure 3 is a top view schematic diagram of the utility model embodiment and Figure 4 is a sectional view schematic diagram of the utility model embodiment.

[0023] Referring to Figures 1 to 4 The utility model provides a big air volume low noise air blower, including motor 1, sound insulation cotton cover 2 and sound insulation cover 3, motor 1 is installed in the center of inner air cavity 12, and the front side center of inner air cavity 12 is provided with air inlet pipe 10, the outside of inner air cavity 12 is provided with machine cover 14, and the outside of machine cover 14 is provided with sound insulation cotton cover 2, sound insulation cotton cover 2 is covered with sound insulation cover 3, and the lower end of support leg 17 is fixed on the bottom plate 18, and the bottom of bottom plate 18 is provided with cushion block 19.

[0024] In the embodiment, the front part of motor 1 is provided with a rotating shaft, and an impeller is installed on the rotating shaft, and the rotating shaft and the impeller in the front part of motor 1 are located in the air inlet pipe 10, and a plurality of inner through holes 11 are formed in the inner wall of the rear part of air inlet pipe 10; a protective net 100 is arranged at the front end of air inlet pipe 10, and the protective net 100 is made of a stainless steel mesh structure; a lower connecting pipe 15 is connected to the lower right corner of inner air cavity 12, and an air outlet 16 is arranged at the right end of lower connecting pipe 15.

[0025] As a preferred embodiment, the utility model drives the impeller to draw the external air flow into the inner air cavity 12 from the air inlet pipe 10 by rotating the rotating shaft of motor 1, and the inner air cavity 12 is connected to the lower connecting pipe 15, and the inner air cavity 12 has a large capacity, so the air flow is also large, which facilitates the large air volume air blowing work.

[0026] In this embodiment, an inner rubber layer 13 is provided on the inner ring wall of the hood 14, and the inner rubber layer 13 adopts a rubber layer structure with a thickness of 2-3 mm; the sound insulation cotton sleeve 2 is made of high-density sponge material; a sound insulation chamber 30 is opened in the sound insulation outer cover 3, and a plurality of groups of sound insulation triangles 31 are provided in the sound insulation chamber 30.

[0027] As a preferred embodiment, the hood 14 of the utility model is tightly attached to the inner ring wall of the hood 14, which can reduce the noise generated by the contact between the air flow and the inner wall of the hood 14, and then use the sound insulation cotton sleeve 2 to perform surrounding sound absorption treatment, and then use the sound-blocking triangle piece 31 to reduce the transmission of sound, and use the sound-blocking chamber 30 to block the sound inside it, which helps to effectively reduce noise.

[0028] The utility model can effectively solve the problems in the prior art that the noise reduction gasket of the blower is insufficient in noise reduction and sound insulation effect, is not suitable for use in large air volume blowers, and does not reduce noise efficiently. The utility model adopts an enclosing multiple sound insulation and noise reduction treatment, first reducing the contact noise between the flowing air flow and the inner wall, and then using sound-absorbing cotton to absorb most of the noise, and then using the sound insulation triangle piece in the soundproof room to block part of the sound waves from being transmitted, so that the noise treatment is more efficient and practical.

[0029] The above embodiments are used to illustrate the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the scope of protection of the present invention.

Claims

1. A high air volume and low noise blower, characterized by: The invention comprises a motor (1), a sound insulation cotton sleeve (2) and a sound insulation outer cover (3), wherein the motor (1) is installed in the center of an inner air cavity (12), and an air inlet tube (10) is provided at the center of the front side of the inner air cavity (12), an organic cover (14) is provided on the outside of the inner air cavity (12), and a sound insulation cotton sleeve (2) is provided on the outside of the organic cover (14), the outer cover of the sound insulation cotton sleeve (2) is provided with a sound insulation outer cover (3), and a support leg (17) is fixed to the lower part of the outer ring surface of the sound insulation outer cover (3), the lower end of the support leg (17) is fixed to a bottom plate (18), and a pad (19) is provided at the bottom of the bottom plate (18).

2. A high air volume and low noise blower according to claim 1, characterized in that: The front of the motor (1) is equipped with a rotating shaft, and an impeller is installed on the rotating shaft. The rotating shaft and the impeller at the front of the motor (1) are both located in the air inlet cylinder (10), and a plurality of internal openings (11) are provided on the rear inner wall of the air inlet cylinder (10).

3. A high air volume and low noise blower according to claim 1, characterized in that: A protective net (100) is provided at the front end of the air inlet cylinder (10), and the protective net (100) adopts a mesh structure made of stainless steel.

4. A high air volume and low noise blower according to claim 1, characterized in that: The lower right corner of the inner air cavity (12) is connected to a lower connecting pipe (15), and an air outlet (16) is provided at the right end of the lower connecting pipe (15).

5. The high air volume and low noise blower according to claim 1, characterized in that: An inner rubber layer (13) is provided on the inner ring wall of the hood (14), and the inner rubber layer (13) adopts a rubber layer structure with a thickness of 2-3 mm.

6. A high air volume and low noise blower according to claim 1, characterized in that: The sound insulation cotton sleeve (2) is made of sound-absorbing cotton.

7. The high air volume and low noise blower according to claim 1, characterized in that: A sound-proof chamber (30) is provided in the sound-proof outer cover (3), and a plurality of groups of sound-proof triangles (31) are provided in the sound-proof chamber (30).

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