Matrix type reverse silencer for air inlet pipe of fan

Abstract

The utility model discloses a fan air inlet pipe matrix type reverse silencer which comprises a fan body, a silencing cover body is arranged at an air inlet of an air inlet pipe at one end of the fan body, a first transverse silencing plate and a first longitudinal silencing plate are arranged at the top of an end opening of the silencing cover body, and an inner supporting plate is arranged in the silencing cover body through a supporting rod. According to the noise reduction cover, the first transverse noise reduction plate and the first longitudinal noise reduction plate are arranged at the top of the end opening of the noise reduction cover body, and the second transverse noise reduction plate and the second longitudinal noise reduction plate are arranged in the noise reduction cover body through the supporting rod, the inner supporting plate and the electric push rod; the silencing cover body has excellent sound absorption and silencing performance, and the electric push rod drives the second longitudinal silencing plate to be adjusted in a lifting mode, so that opening and closing of a channel of the silencing cover body can be controlled, and external impurities are prevented from entering a fan body when the silencing cover body is not used.

Description

Technical Field

[0001] The utility model relates to the technical field of fan silencers, in particular to a matrix type reverse silencer for an air inlet pipe of a fan. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Fan is China's customary abbreviation for gas compression and gas delivery machinery. The fans usually mentioned include ventilators, blowers, and wind turbines. Fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air induction of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selection of grains, wind tunnel wind sources and inflation and propulsion of hovercraft, etc.

[0003] A muffler air duct with application number 201920159533.2 in the prior art includes an outer shell, an inner liner perforated plate and a flange, wherein the inner liner perforated plate is fixedly installed inside the outer shell, and pipe openings are provided at both ends of the inner liner perforated plate, and flanges are fixedly installed on the surface of the pipe openings, and fixing holes are provided inside the flange, and bolts are inserted inside the fixing holes, and a nut is rotatably installed at one end of the bolt, and a muffler material is fixedly installed on the inner surface of the outer shell, and a fireproof material is fixedly installed on the outer surface of the muffler material. The utility model is provided with muffler material inside, which is light in weight and easy to install, and is convenient for installation and transportation by the staff, but the muffler effect is average, and it is not convenient to control the opening and closing of the muffler channel, which affects the flexibility of use. Utility Model Content

[0004] The utility model aims to provide a fan air inlet duct matrix reverse silencer to solve the problems in the prior art that the silencer effect is average, the opening and closing of the silencer channel is inconvenient to control, and the flexibility of use is affected.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a fan air inlet duct matrix reverse silencer, comprising a fan body, a silencer cover body is provided at the air inlet of the air inlet duct at one end of the fan body, a first transverse silencer plate is provided at the top of the port of the silencer cover body, a first longitudinal silencer plate is provided at the lower side of one end of the first transverse silencer plate, an inner support plate is provided inside the silencer cover body through a support rod, a second transverse silencer plate is provided on the upper side of the inner support plate through an electric push rod, a second longitudinal silencer plate is provided at one end of the second transverse silencer plate, and the first longitudinal silencer plate and the second longitudinal silencer plate are arranged in parallel, and an array silencer column is provided inside the first transverse silencer plate.

[0006] Furthermore, upper support rods are provided at the four corners of the upper part of the sound-absorbing cover body, and a protective cover is provided on the top of the upper support rods.

[0007] Furthermore, a first sound absorbing layer is disposed on the outer sides of the first longitudinal sound absorbing plate and the second longitudinal sound absorbing plate, and a second sound absorbing layer is disposed on the inner wall of the sound absorbing cover.

[0008] Furthermore, the first sound absorbing layer and the second sound absorbing layer are both sound absorbing cotton layers, and the thickness of the first sound absorbing layer and the second sound absorbing layer is 2-5 mm.

[0009] Furthermore, a first sound insulation layer is disposed on the lower side of the first transverse sound-absorbing plate, and a second sound insulation layer is disposed on the lower side of the second transverse sound-absorbing plate.

[0010] Furthermore, two ends of the inner support plate are vertically fixedly welded to the support rod, and two ends of the second transverse silencer plate are slidably arranged with the support rod.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model is provided with a first transverse sound-absorbing plate, an array-type sound-absorbing column and a first longitudinal sound-absorbing plate on the top of the port of the sound-absorbing cover, and a second transverse sound-absorbing plate and a second longitudinal sound-absorbing plate are provided inside the sound-absorbing cover through a support rod, an inner support plate and an electric push rod, so that the sound-absorbing cover has excellent sound-absorbing and sound-absorbing performance and a good sound-absorbing effect.

[0013] The utility model vertically fixes and welds the two ends of the inner support plate to the support rod, and the two ends of the second transverse silencer plate are slidably arranged with the support rod, so that the second longitudinal silencer plate is driven to rise and fall by an electric push rod. When the upper end of the second longitudinal silencer plate contacts the inner top wall of the first transverse silencer plate, the silencer channel in the silencer cover is closed, thereby controlling the opening and closing of the silencer cover channel, preventing foreign matter from entering the fan body when the silencer cover is not in use, and improving the flexibility and safety of silencer use.

[0014] The utility model also provides a first sound insulation layer on the lower side of the first transverse sound-absorbing plate and a second sound insulation layer on the lower side of the second transverse sound-absorbing plate, so that the transverse sound-absorbing plate has excellent sound-proof performance, further improving the sound-absorbing performance of the sound-absorbing cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a front view of the internal structure of the silencer cover of the utility model;

[0018] Figure 3This is a schematic diagram of the structure of the first transverse sound-absorbing plate of the utility model.

[0019] In the figure: 1. fan body; 2. air inlet pipe; 3. silencer cover; 4. port; 5. upper support rod; 6. first transverse silencer plate; 7. first longitudinal silencer plate; 8. second transverse silencer plate; 9. second longitudinal silencer plate; 10. first sound absorption layer; 11. second sound absorption layer; 12. support rod; 13. electric push rod; 14. inner support plate; 15. first sound insulation layer; 16. array silencer column; 17. protective cover. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 , Figure 2 , Figure 3 In the embodiment of the utility model, a fan air inlet duct matrix reverse silencer comprises a fan body 1, a silencer cover body 3 is provided at the air inlet of the air inlet duct 2 at one end of the fan body 1, a first transverse silencer plate 6 is provided at the top of the port 4 of the silencer cover body 3, a first longitudinal silencer plate 7 is provided at the lower side of one end of the first transverse silencer plate 6, an inner support plate 14 is provided inside the silencer cover body 3 through a support rod 12, a second transverse silencer plate 8 is provided on the upper side of the inner support plate 14 through an electric push rod 13, and a second longitudinal silencer plate 8 is provided at one end of the second transverse silencer plate 8 Plate 9, and the first longitudinal sound-absorbing plate 7 and the second longitudinal sound-absorbing plate 9 are arranged in parallel, the first longitudinal sound-absorbing plate 7 and the second longitudinal sound-absorbing plate 9 are provided with a first sound-absorbing layer 10 on the outer side, and the second sound-absorbing layer 11 is provided on the inner wall of the sound-absorbing cover body 3, the first sound-absorbing layer 10 and the second sound-absorbing layer 11 are both sound-absorbing cotton layers, and the thickness of the first sound-absorbing layer 10 and the second sound-absorbing layer 11 is 2-5mm, and an array-type sound-absorbing column 16 is provided inside the first transverse sound-absorbing plate 6, so that the sound-absorbing cover body 3 has excellent sound-absorbing and sound-absorbing performance, and the sound-absorbing effect is better.

[0022] like Figure 2 As shown, in order to control the opening and closing of the channel of the silencer hood 3, the two ends of the inner support plate 14 are vertically fixed and welded to the support rod 12, and the two ends of the second transverse silencer plate 8 are slidably arranged with the support rod 12. The second longitudinal silencer plate 9 and the second transverse silencer plate 8 are driven to rise and fall by the electric push rod 13. When the upper end of the second longitudinal silencer plate 9 contacts the inner top wall of the first transverse silencer plate 6, the silencer channel in the silencer hood 3 is closed, so that the opening and closing of the channel of the silencer hood 3 can be controlled to prevent external impurities from entering the fan body when the silencer hood 3 is not in use.

[0023] like Figure 1 As shown, in order to improve the safety of the upper part of the silencer cover 3, upper support rods 5 are provided at the four corners of the upper part of the silencer cover 3, and a protective cover 17 is provided on the top of the upper support rods 5 to shield and protect the upper part of the silencer cover 3.

[0024] like Figure 2 As shown, in order to further improve the soundproofing performance of the soundproofing cover 3, a first sound insulation layer 15 is provided on the lower side of the first transverse soundproofing plate 6, and a second sound insulation layer is provided on the lower side of the second transverse soundproofing plate 8, so that the transverse soundproofing plates have excellent soundproofing performance.

[0025] The working principle and use process of the utility model are as follows: when in use, a first transverse sound-absorbing plate 6, an array sound-absorbing column 16 and a first longitudinal sound-absorbing plate 7 are arranged on the top of the port 4 of the sound-absorbing cover 3, and a second transverse sound-absorbing plate 8 and a second longitudinal sound-absorbing plate 9 are arranged inside the sound-absorbing cover 3 through a support rod 12, an inner support plate 14 and an electric push rod 13, so that the sound-absorbing cover 3 has excellent sound absorption and sound-absorbing performance and a good sound-absorbing effect; and the second longitudinal sound-absorbing plate 9 and the second transverse sound-absorbing plate 8 are driven to rise and fall by the electric push rod 13, and when the upper end of the second longitudinal sound-absorbing plate 9 contacts the inner top wall of the first transverse sound-absorbing plate 6, the sound-absorbing channel in the sound-absorbing cover 3 is closed, so that the opening and closing of the channel of the sound-absorbing cover 3 can be controlled to prevent external impurities from entering the fan body 1 when the sound-absorbing cover 3 is not in use.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above 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 utility model shall be included in the protection scope of the utility model.

Claims

1. A fan air inlet duct matrix reverse muffler, comprising a fan body (1), characterized in that: A silencer cover (3) is provided at the air inlet of the air inlet pipe (2) at one end of the fan body (1); a first transverse silencer plate (6) is provided at the top of the port (4) of the silencer cover (3); a first longitudinal silencer plate (7) is provided at the lower side of one end of the first transverse silencer plate (6); an inner support plate (14) is provided inside the silencer cover (3) via a support rod (12); a second transverse silencer plate (8) is provided on the upper side of the inner support plate (14) via an electric push rod (13); a second longitudinal silencer plate (9) is provided at one end of the second transverse silencer plate (8); the first longitudinal silencer plate (7) and the second longitudinal silencer plate (9) are arranged in parallel; and an array of silencer columns (16) are provided inside the first transverse silencer plate (6).

2. A fan air inlet duct matrix reverse muffler according to claim 1, characterized in that: Upper support rods (5) are provided at the four corners of the upper part of the noise-absorbing cover body (3), and a protective cover (17) is provided at the top of the upper support rods (5).

3. A fan air inlet duct matrix reverse muffler according to claim 1, characterized in that: A first sound absorbing layer (10) is provided on the outer sides of the first longitudinal sound absorbing plate (7) and the second longitudinal sound absorbing plate (9), and a second sound absorbing layer (11) is provided on the inner wall of the sound absorbing cover (3).

4. A fan air inlet duct matrix reverse muffler according to claim 3, characterized in that: The first sound absorbing layer (10) and the second sound absorbing layer (11) are both sound absorbing cotton layers, and the thickness of the first sound absorbing layer (10) and the second sound absorbing layer (11) is 2-5 mm.

5. The fan air inlet duct matrix reverse muffler according to claim 1, characterized in that: A first sound insulation layer (15) is provided on the lower side of the first transverse sound absorbing plate (6), and a second sound insulation layer is provided on the lower side of the second transverse sound absorbing plate (8).

6. A fan air inlet duct matrix reverse muffler according to claim 1, characterized in that: The two ends of the inner support plate (14) are vertically fixedly welded to the support rod (12), and the two ends of the second transverse sound-absorbing plate (8) are slidably arranged with the support rod (12).

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