Blade noise reduction type explosion-proof fan

Abstract

The utility model discloses a fan blade noise reduction type explosion-proof fan, and relates to the technical field of explosion-proof fans, the fan blade noise reduction type explosion-proof fan comprises a fan outer frame, a protective net mechanism is fixed on one side of the fan outer frame in an extruding manner, and a noise reduction fan mechanism is rotatably arranged in the fan outer frame; the explosion-proof fan solves the problems that vibration and noise are possibly generated during operation of an existing explosion-proof fan, the design of fan blades needs to be improved to reduce the noise and the vibration, air flow is smoother and wind resistance is reduced through the arrangement of the fan outer frame and the beveled opening in the frame, the sound absorption plate is used for side face sound absorption and noise reduction, and the service life of the fan is prolonged. The noise reduction fan mechanism is arranged, the rear connecting assembly drives the noise reduction fan mechanism to rotate, the eight composite fan blades are arranged and adopt streamline design, airflow separation and vortex generation are reduced, noise is reduced, meanwhile, the composite fan blades are made of light and high-toughness composite materials, the weight of the blades is reduced, and the noise reduction effect is achieved. And the noise during rotation is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof fan technology, specifically to an explosion-proof fan with noise reduction blades. Background Technology

[0002] An explosion-proof fan is a specially designed fan used for air circulation in potentially hazardous environments containing flammable and explosive gases or dust. This type of fan is designed and manufactured in accordance with specific explosion-proof standards to ensure that even if an explosion occurs in a specific environment, it will not cause a fire or further explosion.

[0003] Modern explosion-proof fans may generate vibration and noise during operation. In order to improve the quality of the working environment and ensure the long-term stable operation of the equipment, it is necessary to improve the fan blade design to reduce noise and vibration.

[0004] To address the aforementioned issues, a blade noise-reducing explosion-proof fan is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a fan blade noise reduction explosion-proof fan, which solves the problem that current explosion-proof fans may generate vibration and noise during operation. In order to improve the quality of the working environment and ensure the long-term stable operation of the equipment, it is necessary to improve the fan blade design to reduce noise and vibration.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fan with noise reduction and explosion-proof features, comprising a fan frame, a protective mesh mechanism being pressed and fixed on one side of the fan frame, a noise reduction fan mechanism being rotatably arranged inside the fan frame, the fan frame comprising an outer frame, inner oblique openings on both sides of the inner frame, a sound-absorbing plate being fitted between the two inner oblique openings, a rear connecting component being fixedly arranged on one side of the outer frame, and the noise reduction fan mechanism comprising a rotating core connected to the output end of the rear connecting component, and composite fan blades disposed at the outer end of the rotating core.

[0007] Preferably, the outer frame has four corner slots, and four sets of fixing components are inserted into the four corner slots.

[0008] Preferably, the fixing component includes a plug screw and a nut threaded onto one side of the plug screw.

[0009] Preferably, the rear connection assembly includes a bending member fixedly disposed on one side of the outer frame, a motor connector connected to the center of the rear connection assembly, and the output end of the motor connector is provided with a rotating shaft.

[0010] Preferably, the protective netting mechanism includes multiple sets of ring nets arranged on the same plane, and four sets of connecting rods connected around the ring nets.

[0011] Preferably, one end of the connecting rod is provided with a bend, and the plug screw is inserted into the bend and pressed to fix it.

[0012] Preferably, one end of the composite fan blade connected to the rotor is configured as a thick tail end, and the outer end is configured as a pointed end.

[0013] Preferably, the pointed end has a fan blade bevel on its side.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The present invention provides a blade noise reduction explosion-proof fan. Through the design of the fan frame and the opening of the slanted opening inside the frame, the airflow is smoother and the wind resistance is reduced. The sound-absorbing plate is used for sound absorption and noise reduction on the side, which initially solves the problem of vibration and noise that may occur when current explosion-proof fans are running.

[0016] 2. This utility model provides a noise-reducing explosion-proof fan with a fan blade. Through the setting of the noise-reducing fan mechanism, the rear connecting component drives the noise-reducing fan mechanism to rotate. The composite fan blade has eight blades and adopts a streamlined design to reduce airflow separation and eddy current generation, thereby reducing noise. At the same time, the composite fan blade is made of lightweight and highly tough composite material, which reduces the weight of the blade itself and thus reduces the noise during rotation. This solves the problem that current explosion-proof fans need to improve the fan blade design to reduce noise and vibration. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the disassembly structure of the fan frame and protective net mechanism of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the fan frame and noise reduction fan mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the noise reduction fan mechanism of this utility model.

[0022] In the diagram: 1. Fan outer frame; 11. Outer frame; 111. Four corner slots; 112. Frame inner bevel; 12. Fixing component; 121. Insert screw; 122. Nut; 13. Rear connection component; 131. Bend; 132. Motor connector; 133. Shaft; 14. Sound-absorbing panel; 2. Protective net mechanism; 21. Net; 22. Connecting rod; 221. Bend; 3. Noise-reducing fan mechanism; 31. Rotating core; 32. Composite fan blade; 321. Thick tail end; 322. Pointed end; 3221. Fan blade bevel. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0025] Combination Figure 1 This utility model discloses a fan blade noise reduction explosion-proof fan, including a fan outer frame 1, a protective net mechanism 2 that is pressed and fixed on one side of the fan outer frame 1, a noise reduction fan mechanism 3 that is rotatably arranged inside the fan outer frame 1, the fan outer frame 1 including an outer frame 11, an inner frame bevel 112 that is opened on both sides of the inner frame 11, a sound-absorbing plate 14 that is fitted between the two inner frame bevels 112, a rear connection component 13 that is fixed on one side of the outer frame 11, and a noise reduction fan mechanism 3 including a rotating core 31 connected to the output end of the rear connection component 13, and a composite fan blade 32 that is arranged on the outer end of the rotating core 31.

[0026] Specifically, the outer frame 11 surrounds the noise reduction fan mechanism 3, and the opening of the inclined opening 112 inside the frame makes the airflow smoother and reduces wind resistance. The sound-absorbing panel 14 is used for side sound absorption and noise reduction. The rear connecting component 13 drives the noise reduction fan mechanism 3 to rotate. The composite fan blade 32 is provided with eight blades, and the composite fan blade 32 adopts a streamlined design to reduce airflow separation and vortex generation, thereby reducing noise. At the same time, the composite fan blade 32 is made of lightweight and highly tough composite material, which reduces the weight of the blades themselves, thereby reducing the noise during rotation.

[0027] The present invention will be further described below with reference to the embodiments.

[0028] Example 1:

[0029] Combination Figures 2-4The outer frame 11 has four corner slots 111 at its four corners. Fixing components 12 are inserted into the four corner slots 111. There are four sets of fixing components 12. The four sets of fixing components 12 are inserted into the four corner slots 111 to fix the fan outer frame 1.

[0030] The fixing assembly 12 includes a plug screw 121 and a nut 122 threaded onto one side of the plug screw 121. The plug screw 121 is inserted into the four corner slots 111, and the nut 122 is used to lock the plug screw 121. The four sets of fixing assemblies 12 can be connected to the wall and the explosion-proof fan.

[0031] The rear connection assembly 13 includes a bending member 131 fixedly installed on one side of the outer frame 11, a motor connector 132 connected to the center of the rear connection assembly 13, and a rotating shaft 133 provided at the output end of the motor connector 132. The arc shape of the bending member 131 reduces airflow resistance, and the motor connector 132 drives the rotating shaft 133 to rotate the noise reduction fan mechanism 3.

[0032] Example 2:

[0033] Combination Figures 3-5 The protective net mechanism 2 includes multiple sets of nets 21 arranged on the same plane, and four sets of connecting rods 22 connected around the nets 21. The multiple sets of nets 21 and connecting rods 22 are fixed to each other to achieve protection for the noise reduction fan mechanism 3.

[0034] One end of the connecting rod 22 is provided with a buckle 221. The plug screw 121 is inserted into the buckle 221 and pressed to fix it. The buckle 221 is provided to facilitate the use of the fixing component 12 to fix the protective net mechanism 2 around its perimeter.

[0035] The composite fan blade 32 is connected to the rotating core 31 at one end as a thick tail end 321 and the outer end as a pointed end 322. The thick tail end 321 is wider and the pointed end 322 is sharper, which can reduce noise caused by airflow shear force.

[0036] The pointed end 322 has a fan blade bevel 3221 on its side. The fan blade bevel 3221 helps to optimize airflow and reduce noise caused by uneven airflow.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blade noise-reducing explosion-proof fan, comprising a fan frame (1), characterized in that: A protective net mechanism (2) is pressed and fixed on one side of the fan frame (1), and a noise reduction fan mechanism (3) is rotatably installed inside the fan frame (1); The fan outer frame (1) includes an outer frame (11), and the inner sides of the outer frame (11) are provided with inner oblique openings (112). A sound-absorbing plate (14) is attached between the two inner oblique openings (112). A rear connection component (13) is fixedly provided on one side of the outer frame (11). The noise reduction fan mechanism (3) includes a rotating core (31) connected to the output end of the rear connection component (13) and a composite fan blade (32) provided at the outer end of the rotating core (31).

2. The explosion-proof fan with noise reduction blades according to claim 1, characterized in that: The outer frame (11) has four corner slots (111) at its four corners, and four sets of fixing components (12) are inserted into the four corner slots (111).

3. The explosion-proof fan with noise reduction blades according to claim 2, characterized in that: The fixing assembly (12) includes a plug screw (121) and a nut (122) threaded onto one side of the plug screw (121).

4. The explosion-proof fan with noise reduction blades according to claim 1, characterized in that: The rear connection assembly (13) includes a bending member (131) fixedly installed on one side of the outer frame (11), a motor connector (132) connected to the center of the rear connection assembly (13), and a rotating shaft (133) provided at the output end of the motor connector (132).

5. The explosion-proof fan with noise reduction blades according to claim 3, characterized in that: The protective netting mechanism (2) includes multiple sets of nets (21) arranged on the same plane, and four sets of connecting rods (22) connected around the nets (21).

6. The explosion-proof fan with noise reduction blades according to claim 5, characterized in that: One end of the connecting rod (22) is provided with a buckle (221), and the plug screw (121) is inserted into the buckle (221) to press and fix it.

7. The explosion-proof fan with blade noise reduction according to claim 1, characterized in that: The composite fan blade (32) is connected to the rotating core (31) at one end, which is a thick tail end (321), and the outer end is a pointed end (322).

8. The explosion-proof fan with blade noise reduction according to claim 7, characterized in that: The pointed end (322) has a fan blade bevel (3221) on its side.

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