Silencing device of cooling fan

Abstract

The utility model discloses a cooling fan silencer which comprises a cylinder, the cylinder is connected to an air inlet of a cooling fan, a plurality of round holes are evenly distributed in the outer side face of the cylinder, a plurality of silencing assemblies are evenly distributed on the inner side face of the cylinder in the length direction of the cylinder, the silencing assemblies do not interfere with the round holes, and the silencing assemblies are arranged on the inner side face of the cylinder. The noise reduction device for the cooling fan can greatly reduce noise pollution generated during operation of the cooling fan, and physical and psychological health of workers is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pre-baked anode cooling, in particular to a silencing device for a cooling fan. Background Art

[0002] Pre-baked anodes are the main consumable products in electrolytic aluminum production. Anode baking is an important process in the production process of carbon products. During the baking process, it has to go through four stages: low-temperature preheating stage, medium-temperature coking stage, high-temperature baking stage, and cooling stage. The cooling stage is divided into natural cooling and forced cooling. Forced cooling must be carried out by a cooling fan to blow air on the carbon blocks in the production cooling furnace chamber to cool them down to 300 °C, so as to meet the production technical requirements. Otherwise, it will affect the product quality. Therefore, the cooling process plays a very important role in the quality of the carbon blocks. At the same time, the cooling fan can lower the temperature in the baking furnace during the cooling process, ensuring that the maintenance personnel in the furnace chamber can enter the furnace chamber for operation.

[0003] However, the cooling fan makes a relatively loud noise during operation, which will have an adverse impact on the physical and mental health of the post workers in the area of the baking furnace surface. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects, provide a silencing device for a cooling fan, which can greatly reduce the noise pollution generated during the operation of the cooling fan, ensure the physical and mental health of workers, and can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A silencing device for a cooling fan, including a cylinder, the cylinder is connected to the air inlet of the cooling fan, a plurality of round holes are evenly distributed on the outer side surface of the cylinder, a plurality of silencing components are evenly distributed along the length direction of the inner side surface of the cylinder, the silencing components do not interfere with the round holes, and a silencing channel is formed between adjacent silencing components.

[0006] As a preferred technical scheme of the utility model, the silencing component includes a framework and a second sound-absorbing cotton, the framework is fixed at both ends of the inner side surface of the cylinder, and the second sound-absorbing cotton is fixed between the two frameworks.

[0007] As a preferred technical scheme of the utility model, the cylinder and the cooling fan are connected by a flange.

[0008] As a preferred technical scheme of the utility model, a first sound-absorbing cotton is covered between the two flange plates of the flange.

[0009] As a preferred technical scheme of the utility model, one end of the cylinder is connected to a steel disc through a steel bar, and the steel disc coincides with the central axis of the cylinder.

[0010] As a preferred technical solution of the present utility model, a fixing strip is provided at the bottom of the cylinder, the lower end of the fixing strip is welded to the support plate, and a vertical rod is fixed at the lower end of the support plate.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The noise reduction device of the cooling fan is reasonably designed and ingeniously conceived. By arranging a cylinder at the air inlet position of the cooling fan and providing a plurality of round holes on the cylinder, the inlet air is separated into a plurality of air inlets, reducing air friction and effectively reducing the generation of noise. At the same time, a plurality of sound absorption components are evenly distributed on the inner side surface of the cylinder, and a sound absorption channel is formed between adjacent sound absorption components. When the intake air enters the cooling fan, it enters along the sound absorption channel, and most of the noise is absorbed by the second sound absorption cotton in the sound absorption components, thereby further reducing noise pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is a front view of the present utility model;

[0014] Figure 3 is Figure 2 a sectional view taken along line A-A in

[0015] In the figure: 1 cylinder, 2 round holes, 3 cooling fan, 4 flange, 5 sound absorption component, 6 steel bar, 7 steel disc, 8 first sound absorption cotton, 9 fixing strip, 10 support plate, 11 vertical rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments (for the convenience of description and understanding, the upper part of Figure 2 is described as the upper part below). Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0017] Please refer to Figures 1-3, the present utility model provides a technical solution: a noise reduction device for a cooling fan, which includes a cylinder 1. The cylinder 1 is connected to the air inlet of the cooling fan 3. A plurality of round holes 2 are evenly distributed on the outer side surface of the cylinder 1. A plurality of noise reduction components 5 are evenly distributed on the inner side surface of the cylinder 1 along its length direction. The noise reduction components 5 do not interfere with the round holes 2. A noise reduction channel is formed between adjacent noise reduction components 5. The noise reduction component 5 includes a framework and a second sound-absorbing cotton. The framework is fixed at both ends of the inner side surface of the cylinder 1, and the second sound-absorbing cotton is fixed between the two frameworks. First, the inlet air is divided into multiple air inlets through the plurality of round holes 2 to reduce air friction and reduce the generation of noise at the source. Secondly, when the air enters the cylinder 1 from the round holes 2 and passes through the noise reduction channel, the noise is further absorbed, thereby reducing the noise pollution in the propagation path, and further achieving the purpose of extremely low noise when the cooling fan 3 works, and protecting the physical and mental health of workers.

[0018] Furthermore, for the convenience of installation and disassembly of this noise reduction device, the cylinder 1 and the cooling fan 3 are connected by a flange 4.

[0019] Furthermore, in order to reduce vibration and noise, a first sound-absorbing cotton is covered between the two flanges of the flange 4.

[0020] Furthermore, in order to ensure the air intake volume, one end of the cylinder 1 is connected to a steel disc 7 through a steel bar 6. The steel disc 7 coincides with the central axis of the cylinder 1, so that the air enters the cylinder 1 from the side, thereby reducing the generation of noise.

[0021] Furthermore, in order to prevent excessive shielding of the round holes 2 when fixing the cylinder 1 and affecting the noise reduction effect, a fixing strip 9 is provided at the bottom of the cylinder 1. The lower end of the fixing strip 9 is welded to a support plate 10, and a vertical rod 11 is fixed at the lower end of the support plate 10.

[0022] During use: After the cooling fan 3 is started, the air enters the cylinder through the round holes 2 and the opening at one end of the cylinder. The second sound-absorbing cotton in the noise reduction component 5 absorbs the noise, so that the noise entering the cooling fan 3 is greatly reduced.

[0023] The present utility model installs a cylinder 1 with a plurality of round holes 2 at the air volume inlet of the cooling fan 3, divides the inlet air into multiple air inlets to reduce air friction, effectively reduces noise. At the same time, a plurality of noise reduction components 5 are evenly distributed on the inner side surface of the cylinder 1 to perform secondary noise reduction on the noise, greatly reducing the noise pollution, improving the production environment of the operation area, and protecting the physical and mental health of workers.

[0024] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A silencing device for a cooling fan, characterized in that: It includes a cylinder (1), and the cylinder (1) is connected to the air inlet of a cooling fan (3). A plurality of round holes (2) are evenly distributed on the outer side surface of the cylinder (1). A plurality of sound-absorbing components (5) are evenly distributed along the length direction on the inner side surface of the cylinder (1). The sound-absorbing components (5) do not interfere with the round holes (2), and a sound-absorbing channel is formed between adjacent sound-absorbing components (5).

2. The noise elimination device of a cooling fan according to claim 1, wherein: The sound-absorbing component (5) includes a skeleton and a second sound-absorbing cotton. The skeleton is fixed at both ends of the inner side surface of the cylinder (1), and the second sound-absorbing cotton is fixed between the two skeletons.

3. The noise reduction device for a cooling fan according to claim 1, characterized in that: The cylinder (1) is connected to the cooling fan (3) through a flange (4).

4. The noise reduction device for a cooling fan according to claim 3, characterized in that: A first sound-absorbing cotton is covered between the two flange plates of the flange (4).

5. The noise reduction device for a cooling fan according to claim 1, wherein: One end of the cylinder (1) is connected to a steel disc (7) through a steel bar (6), and the steel disc (7) coincides with the central axis of the cylinder (1).

6. The noise elimination device for a cooling fan according to claim 1, wherein: A fixing strip (9) is arranged at the bottom of the cylinder (1). The lower end of the fixing strip (9) is welded to a support plate (10), and a vertical rod (11) is fixed at the lower end of the support plate (10).

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