Silencing high-speed centrifugal fan

Abstract

The noise elimination high-speed centrifugal fan comprises a base, a containing cavity and a centrifugal fan body are formed in the base, a movable plate is fixedly installed at the bottom of the centrifugal fan body, the movable plate is movably connected with the containing cavity of the base in a sliding mode, and a dust screen is arranged at an air inlet of the centrifugal fan body. A mounting plate is fixedly mounted at an air outlet of the centrifugal fan body, and a silencing pipe fitting is arranged on the other side of the mounting plate. According to the silencer, the wavy silencing grooves are formed in the connecting pipe, tiny air flow channels are formed in the silencing grooves due to the wavy design, air flow can be well and evenly distributed, flowing of air in the air flow channels is facilitated, the spreading range of energy can be enlarged through air flowing, the silencing effect is improved, and the silencing effect is improved. And the silencing plate is embedded in the air outlet cover, so that the silencing effect is further improved, the surrounding environment and personnel health are protected, and the performance and reliability of the centrifugal fan body are improved.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal fans, and in particular to a noise-reducing high-speed centrifugal fan. Background Art

[0002] In the existing centrifugal fan technology, noise reduction and silencing have always been important technical challenges. Centrifugal fans generate relatively large noise during operation, which not only pollutes the surrounding environment, but also may pose a threat to the hearing health of operators.

[0003] The traditional centrifugal fan noise reduction device is relatively simple in structure, usually only relying on adding sound insulation materials or simple noise reduction structures to reduce noise, and the noise reduction effect is limited; Secondly, the traditional centrifugal fan noise reduction device is inconvenient in installation and disassembly. Due to the complex structure and large number of connecting parts, it is time-consuming and laborious to disassemble and clean, which is not conducive to the maintenance and maintenance of the equipment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a noise-reducing high-speed centrifugal fan.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: The present invention provides a noise-reducing high-speed centrifugal fan, comprising: A base, wherein a receiving cavity is formed inside the base; A centrifugal fan body, a movable plate is fixedly installed at the bottom of the centrifugal fan body, the movable plate is movably connected to the accommodating cavity of the base, a dustproof net is arranged at the air inlet of the centrifugal fan body, a mounting plate is fixedly installed at the air outlet of the centrifugal fan body, and a silencer pipe is arranged on the other side of the mounting plate, The muffler pipe fitting comprises a connecting pipe, an air outlet cover, a muffler groove, and a muffler plate. The air outlet cover is fixedly installed on one side of the connecting pipe. A card slot is provided on one side of the mounting plate. The connecting pipe is plugged in and out of the card slot. Fixing components are provided on both sides of the mounting plate. Two fixing holes 1 are provided on both sides of the mounting plate. Fixing holes 2 are provided on both sides of the connecting pipe. Threaded holes are provided between the two fixing holes 1 and the two fixing holes 2 on the same side. A shock absorbing component is arranged in the accommodating cavity of the base, and the shock absorbing component includes a guide rod, an arc-shaped spring sheet, a sliding block, and a spring.

[0006] As a preferred technical solution of the present invention, the connection pipe is provided with the silencer groove along the circumference thereof, the silencer groove is a wave-shaped structure, and the air outlet cover is embedded with the silencer plate along the circumference thereof.

[0007] As a preferred technical solution of the present invention, the fixing assembly includes a connecting plate, a fixing rod, and a bolt. Two fixing rods are fixedly installed on one side of the connecting plate, and the bolts are provided on the internal threads of the connecting plate.

[0008] As a preferred technical solution of the present invention, the fixing rod is used in conjunction with the fixing hole 1 and the fixing hole 2, the bolt is used in conjunction with the threaded hole, and the fixing hole 1 and the fixing hole 2 are both connected to the slot.

[0009] As a preferred technical solution of the present invention, the sliders are fixedly installed on both sides of the bottom of the arc-shaped spring piece, sliding grooves are opened on both sides of the bottom wall of the accommodating cavity of the base, the guide rods are fixedly installed inside the sliding grooves, the sliders are slidably arranged inside the sliding grooves and are slidably connected to the guide rods, and the top of the arc-shaped spring piece is fixedly connected to the bottom of the movable plate.

[0010] As a preferred technical solution of the present invention, the outside of the guide rod is covered with the spring, one end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to the slider.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with a silencer pipe fitting, and a wavy silencer groove is provided inside the connecting pipe. The wavy design forms a tiny air flow channel inside the silencer groove, which can evenly distribute the wind flow and help the air flow in the air. The air flow can expand the energy dissipation range and improve the silencer effect. The silencer plate is embedded in the air outlet cover to further improve the silencer effect. The damping component can be used to dampen the centrifugal fan body, and noise reduction and silencing can be achieved when the centrifugal fan body is working, so that the device can perform multiple noise reduction and silencing on the centrifugal fan body, which is helpful to protect the surrounding environment and personnel health and improve the performance and reliability of the centrifugal fan body.

[0012] 2. The present invention can conveniently disassemble and install the connecting pipe and the air outlet hood through the cooperation of the fixing assembly, the first fixing hole, and the second fixing hole, thereby facilitating the cleaning and maintenance of the connecting pipe and the air outlet hood, and can ensure the noise reduction and silencing effect of the silencer groove inside the connecting pipe and the silencer plate inside the air outlet hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a stereogram of the present invention; Figure 3 is a cross-sectional view of the present invention; Figure 4 The present invention Figure 3 A magnified view of the structure at center; Figure 5 is a stereoscopic view of the muffler pipe fitting of the present invention; Figure 6 is a disassembled view of the mounting plate of the present invention; In the figure: 1. base; 2. centrifugal fan body; 3. movable plate; 4. mounting plate; 5. silencer pipe fitting; 501. connecting pipe; 502. air outlet cover; 503. silencer groove; 504. silencer plate; 6. slot; 7. fixing hole one; 8. fixing hole two; 9. shock absorbing assembly; 901. guide rod; 902. arc spring piece; 903. slider; 904. spring; 10. fixing assembly; 1001. connecting plate; 1002. fixing rod; 1003. bolt. DETAILED DESCRIPTION

[0014] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0015] In the drawings, the same reference numerals all refer to the same components.

[0016] like Figure 1-6 As shown, the present invention provides a muffler high-speed centrifugal fan, comprising: A base 1, wherein a receiving cavity is provided inside the base 1; The centrifugal fan body 2 has a movable plate 3 fixedly installed at the bottom thereof, and the movable plate 3 is movably connected to the receiving cavity of the base 1 by sliding. A dustproof net is arranged at the air inlet of the centrifugal fan body 2, and a mounting plate 4 is fixedly installed at the air outlet of the centrifugal fan body 2, and a silencer pipe 5 is arranged on the other side of the mounting plate 4. The silencer pipe fitting 5 includes a connecting pipe 501, an air outlet cover 502, a silencer groove 503, and a silencer plate 504. The air outlet cover 502 is fixedly installed on one side of the connecting pipe 501. A card slot 6 is provided on one side of the mounting plate 4. The connecting pipe 501 is plugged in and out of the card slot 6. Both sides of the mounting plate 4 are provided with fixing components 10. Both sides of the mounting plate 4 are provided with two fixing holes 1 7. Both sides of the connecting pipe 501 are provided with fixing holes 2 8. Threaded holes are provided between the two fixing holes 1 7 and the two fixing holes 2 8 on the same side. The shock absorbing component 9 is arranged in the accommodating cavity of the base 1 , and the shock absorbing component 9 includes a guide rod 901 , an arc-shaped spring piece 902 , a slider 903 , and a spring 904 .

[0017] By arranging a wavy silencer groove 503 inside the connecting pipe 501, the wavy design forms a tiny air flow channel inside the silencer groove 503, which can evenly distribute the wind flow and help the air flow in the air. The air flow can expand the energy dissipation range and improve the silencer effect. By embedding a silencer plate 504 inside the air outlet cover 502, the silencer effect is further improved. When the centrifugal fan body 2 is working, vibration will be generated, and the vibration force will be transmitted to the arc-shaped spring piece 902. The centrifugal fan body 2 is initially cushioned by the arc-shaped spring piece 902. When the arc-shaped spring piece 902 vibrates, it will drive the slider 903 to slide outside the guide rod 901. At this time, the vibration force can be further buffered and damped by the action of the spring 904, which is helpful to improve the stability of the centrifugal fan body 2 during operation, and realize noise reduction and silencing when the centrifugal fan body 2 is working, so that the device can perform multiple noise reduction and silencing on the centrifugal fan body 2, which is helpful to protect the surrounding environment and personnel health, and improve the performance and reliability of the centrifugal fan body 2. The connecting pipe 501 is plugged in and out of the slot 6 of the mounting plate 4, and then the connecting pipe 501 can be initially fixed through the cooperation of the fixing rod 1002, the fixing hole one 7, and the fixing hole two 8, and then the connecting plate 1001 is fixed by the bolt 1003, thereby completing the installation of the connecting pipe 501. This installation method allows for convenient disassembly and installation, and thus allows for convenient cleaning and maintenance of the connecting pipe 501 and the air outlet cover 502, thereby ensuring the noise reduction and silencing effect of the silencer groove 503 inside the connecting pipe 501 and the silencer plate 504 inside the air outlet cover 502.

[0018] Furthermore, silencer grooves 503 are provided along the circumference of the interior of the connecting pipe 501 , and the silencer grooves 503 are of a wave-shaped structure. Silencer plates 504 are embedded along the circumference of the interior of the air outlet cover 502 .

[0019] Furthermore, the fixing assembly 10 includes a connecting plate 1001 , a fixing rod 1002 , and a bolt 1003 . Two fixing rods 1002 are fixedly installed on one side of the connecting plate 1001 , and the internal threads of the connecting plate 1001 are provided with bolts 1003 .

[0020] Furthermore, the fixing rod 1002 is used in cooperation with the fixing hole 1 7 and the fixing hole 2 8 , the bolt 1003 is used in cooperation with the threaded hole, and both the fixing hole 1 7 and the fixing hole 2 8 are connected to the slot 6 .

[0021] Furthermore, sliders 903 are fixedly installed on both sides of the bottom of the arc-shaped spring piece 902, and sliding grooves are opened on both sides of the bottom wall of the accommodating cavity of the base 1. Guide rods 901 are fixedly installed inside the sliding grooves. The sliders 903 are slidably set inside the sliding grooves and are slidably connected to the guide rods 901. The top of the arc-shaped spring piece 902 is fixedly connected to the bottom of the movable plate 3.

[0022] Furthermore, the outside of the guide rod 901 is covered with a spring 904 , one end of the spring 904 is fixedly connected to the slider 903 , and the other end of the spring 904 is fixedly connected to the slider 903 .

[0023] Working principle: When the centrifugal fan body 2 is working, a wave-shaped silencer groove 503 is provided inside the connecting pipe 501. The wave-shaped design forms a tiny air flow channel inside the silencer groove 503, which can evenly distribute the wind flow and help the air flow in the air. The air flow can expand the energy dissipation range and improve the silencer effect. The silencer plate 504 is embedded in the air outlet cover 502 to further improve the silencer effect. When the centrifugal fan body 2 is working, it will vibrate, and the vibration force will be transmitted to the arc-shaped spring piece 902. The centrifugal fan body 2 is initially cushioned by the arc-shaped spring piece 902. When the arc-shaped spring piece 902 vibrates, it will drive the slider 903 to slide on the outside of the guide rod 901. At this time, the vibration force can be further buffered and damped through the action of the spring 904, which helps to improve the centrifugal fan body 2 The stability during operation can achieve noise reduction and silencing when the centrifugal fan body 2 is working, so that the device can perform multiple noise reduction and silencing on the centrifugal fan body 2, which is helpful to protect the surrounding environment and personnel health, and improve the performance and reliability of the centrifugal fan body 2. The connecting pipe 501 is plugged in and out of the card slot 6 of the mounting plate 4, and then the connecting pipe 501 can be preliminarily fixed through the cooperation of the fixing rod 1002, the fixing hole 1 7, and the fixing hole 2 8, and then the connecting plate 1001 is fixed by the bolt 1003, and then the installation of the connecting pipe 501 is completed. This installation method can be easily disassembled and installed, and then the connecting pipe 501 and the air outlet cover 502 can be easily cleaned and maintained, which can ensure the noise reduction and silencing effect of the silencer groove 503 inside the connecting pipe 501 and the silencer plate 504 inside the air outlet cover 502.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A noise-absorbing high-speed centrifugal fan, characterized in that: include: A base (1), wherein a receiving cavity is provided inside the base (1); A centrifugal fan body (2), a movable plate (3) being fixedly mounted on the bottom of the centrifugal fan body (2), the movable plate (3) being movably connected to the receiving cavity of the base (1), a dust screen being arranged at the air inlet of the centrifugal fan body (2), a mounting plate (4) being fixedly mounted at the air outlet of the centrifugal fan body (2), a silencer pipe (5) being arranged on the other side of the mounting plate (4), The silencer pipe fitting (5) comprises a connecting pipe (501), an air outlet cover (502), a silencer groove (503), and a silencer plate (504); the air outlet cover (502) is fixedly mounted on one side of the connecting pipe (501); a slot (6) is provided on one side of the mounting plate (4); the connecting pipe (501) is pluggably arranged inside the slot (6); fixing components (10) are provided on both sides of the mounting plate (4); two fixing holes (7) are provided on both sides of the mounting plate (4); fixing holes (8) are provided on both sides of the connecting pipe (501); and threaded holes are provided between the two fixing holes (7) and the two fixing holes (8) on the same side. A shock absorbing component (9), the shock absorbing component (9) being arranged in a receiving cavity of the base (1), the shock absorbing component (9) comprising a guide rod (901), an arc-shaped spring sheet (902), a sliding block (903), and a spring (904).

2. A noise-absorbing high-speed centrifugal fan according to claim 1, characterized in that: The connection pipe (501) is provided with the silencer grooves (503) along its circumference, the silencer grooves (503) are of a wave-shaped structure, and the air outlet cover (502) is embedded with the silencer plates (504) along its circumference.

3. The noise-reducing high-speed centrifugal fan according to claim 1, characterized in that: The fixing assembly (10) comprises a connecting plate (1001), a fixing rod (1002), and a bolt (1003); two fixing rods (1002) are fixedly mounted on one side of the connecting plate (1001); and the bolts (1003) are provided on the internal threads of the connecting plate (1001).

4. The noise-reducing high-speed centrifugal fan according to claim 1, characterized in that: The fixing rod (1002) is used in conjunction with the fixing hole 1 (7) and the fixing hole 2 (8), the bolt (1003) is used in conjunction with the threaded hole, and both the fixing hole 1 (7) and the fixing hole 2 (8) are connected to the slot (6).

5. The noise-reducing high-speed centrifugal fan according to claim 1, characterized in that: The sliders (903) are fixedly mounted on both sides of the bottom of the arc-shaped spring piece (902); the bottom wall of the accommodating cavity of the base (1) is provided with sliding grooves on both sides; the guide rods (901) are fixedly mounted inside the sliding grooves; the sliders (903) are slidably arranged inside the sliding grooves and are slidably connected to the guide rods (901); the top of the arc-shaped spring piece (902) is fixedly connected to the bottom of the movable plate (3).

6. The noise-reducing high-speed centrifugal fan according to claim 1, characterized in that: The outside of the guide rod (901) is covered with the spring (904), one end of the spring (904) is fixedly connected to the slider (903), and the other end of the spring (904) is fixedly connected to the slider (903).

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