Large-air-volume axial fan structure

Abstract

The utility model discloses a large-air-volume axial fan structure which comprises an air duct shell, an installation frame is fixedly connected to the inner wall of the air duct shell, a motor is fixedly installed on the outer surface of the installation frame, the output end of the motor is fixedly connected with a rotating shaft, the rotating shaft and the installation frame rotate relative to each other, and a bearing assembly is arranged in the air duct shell. A fixing assembly is arranged in the air duct shell, and blades are arranged in the air duct shell. By arranging the bearing assembly and the fixing assembly, the effect of fixing and installing the blade can be conveniently achieved, by arranging the fixing assembly, pressing and limiting on the fixing assembly can be relieved, then the blade can be rapidly disassembled, the disassembling process is simple, and the maintenance cost and the downtime are further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of axial fans, in particular to a large air volume axial fan structure. Background Art

[0002] The working principle of the axial fan is based on the axial flow of air. Its main structure includes key components such as impeller, casing, and motor. In the factory workshop, a large number of production equipment will generate heat, exhaust gas and dust. The axial fan can effectively discharge these harmful gases and heat from the workshop, while introducing fresh air to improve the air quality and working environment in the workshop. For example, in high-temperature and highly polluted production environments such as steel mills and chemical plants, large-volume axial fans can continuously ventilate and exchange air to ensure the health of workers and the normal operation of production equipment.

[0003] The traditional axial fan structure has many inconveniences in the disassembly of blades. Usually, the connection between the blades and other parts of the fan is relatively complicated. When the blades need to be cleaned, repaired or replaced, it often takes a lot of time and effort. For example, the blades of some fans may be fixed to the impeller by welding or integrated molding, which makes it almost impossible to disassemble the blades individually. The entire impeller or key components of the fan must be disassembled before the blades can be processed. This operation is not only difficult, but also easily causes damage to other components during the disassembly and reassembly process, further increasing maintenance costs and downtime. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a large air volume axial fan structure with easy disassembly of fan blades.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a large air volume axial fan structure, including an air duct shell, the inner wall of the air duct shell is fixedly connected to a mounting bracket, the outer surface of the mounting bracket is fixedly installed with a motor, the output end of the motor is fixedly connected to a rotating shaft, and the rotating shaft rotates with the mounting bracket, the interior of the air duct shell is provided with a load-bearing component, the interior of the air duct shell is provided with a fixing component, and the interior of the air duct shell is provided with blades.

[0006] Preferably, in the above-mentioned large air volume axial fan structure, the bearing assembly includes a bearing plate fixedly connected to one end of the rotating shaft away from the motor, and the inner wall of the bearing plate is provided with a threaded groove.

[0007] Preferably, in the above-mentioned large air volume axial fan structure, the outer surface of the carrier plate is provided with five slots, and the slots are engaged with the blades, and the inner wall of the slots is provided with two slots.

[0008] Preferably, in the above-mentioned large air volume axial fan structure, the fixing component includes a threaded column threadedly connected to the inner wall of the thread groove, and a knob is fixedly connected to one end of the threaded column away from the thread groove.

[0009] Preferably, in the above-mentioned large air volume axial fan structure, the outer surface of the threaded column is threadedly connected to a pressure plate, and the outer surface of the pressure plate is in contact with the outer surface of the bearing plate.

[0010] Preferably, in the above-mentioned large air volume axial fan structure, an insert rod is fixedly connected to the outer surface of the pressure plate, and the insert rod passes through the interior of the blade and is inserted into the interior of the slot.

[0011] The advantages and beneficial effects of the present invention are as follows: the present invention can facilitate the fixed installation effect of the blade by setting the bearing component and the fixing component; by setting the fixing component, the clamping limit of the fixing component can be released, and the blade can be quickly disassembled; the disassembly process is simple, and the maintenance cost and downtime are further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a partial structural diagram of the utility model;

[0014] Figure 3 It is a schematic diagram of the load-bearing assembly of the utility model;

[0015] Figure 4 It is a schematic diagram of the fixing component of the present utility model.

[0016] In the figure: 1. Air duct housing; 2. Mounting frame; 3. Motor; 4. Rotating shaft; 5. Carrying assembly; 501. Carrying plate; 502. Threaded groove; 503. Card slot; 504. Slot; 6. Fixing assembly; 601. Threaded column; 602. Knob; 603. Pressure plate; 604. Insert rod; 7. Blade. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings and embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figures 1 to 4As shown, a large air volume axial fan structure includes an air duct shell 1, which is made of high-strength aluminum alloy. The aluminum alloy material has the characteristics of light weight and high strength. It can not only effectively reduce the overall weight of the fan and facilitate installation and transportation, but also has good corrosion resistance, can adapt to a variety of complex working environments, and extend the service life of the fan.

[0019] The inner wall of the air duct housing 1 is fixedly connected to the mounting bracket 2 through a precision welding process. The mounting bracket 2 is made of stainless steel and has high structural strength and stability, ensuring that it can firmly support internal components such as the motor 3 during the operation of the fan to prevent loosening or displacement due to vibration.

[0020] The outer surface of the mounting frame 2 is fixed with a motor 3 using high-strength bolts. The motor 3 is a high-efficiency and energy-saving motor, and its output end is firmly fixedly connected to the rotating shaft 4 through a special coupling to ensure high efficiency and stability of power transmission.

[0021] The rotating shaft 4 is made of high-quality alloy steel and has undergone precision processing and heat treatment processes. It has good rigidity and wear resistance and can remain stable during high-speed rotation. It rotates with the mounting frame 2 through high-precision bearings, effectively reducing friction resistance during rotation, reducing energy loss, and improving the mechanical efficiency of the fan.

[0022] A bearing assembly 5 is cleverly provided inside the air duct housing 1. The bearing plate 501 in the bearing assembly 5 is located at the end of the rotating shaft 4 away from the motor 3. The bearing plate 501 is disc-shaped, and its center precisely coincides with the axis of the rotating shaft 4. This structural design ensures that the blades 7 are evenly stressed during rotation, avoiding additional vibration and noise due to eccentricity.

[0023] A thread groove 502 is provided on the inner wall of the supporting plate 501 along the circumferential direction. The pitch and depth of the thread groove 502 are carefully designed to fit tightly with the thread column 601 in the fixing component 6. This can not only ensure that the fixing component 6 reliably presses and limits the blade 7, but also facilitates the rapid release of the limit by rotating the thread column 601 when the blade 7 needs to be removed.

[0024] Five slots 503 are evenly arranged on the outer surface of the carrier plate 501. The shape of the slots 503 is adapted to the shape of the root of the blade 7 and is in a specific arc shape. The slots 503 are snap-fitted to the blade 7. This snap-fitting method enables the blade 7 to be accurately positioned on the carrier plate 501, ensuring the stability of the blade 7 during rotation and preventing the blade 7 from radial displacement.

[0025] Two slots 504 are symmetrically formed on the inner wall of the card slot 503 . The slots 504 are elongated rectangular slots with a moderate depth, which can provide a stable insertion position for the insertion rod 604 in the fixing assembly 6 , further enhancing the stability of the installation of the blade 7 .

[0026] A fixing component 6 is also provided inside the air duct shell 1. The threaded column 601 in the fixing component 6 is made of high-strength carbon steel, and the surface is finely threaded. It fits tightly with the threaded groove 502 on the inner wall of the supporting plate 501, and can generate sufficient axial force during rotation to achieve precise position adjustment of the pressure plate 603.

[0027] The end of the threaded column 601 away from the threaded groove 502 is fixedly connected to the knob 602 by welding. The knob 602 is round and has an anti-slip texture on the surface, which makes it easy for the operator to manually rotate the threaded column 601, which is convenient and labor-saving.

[0028] The outer surface of the threaded column 601 is threadedly connected to a pressure plate 603. The pressure plate 603 is in the shape of a flat disc, and its outer surface is in close contact with the outer surface of the supporting plate 501. The diameter of the pressure plate 603 is slightly larger than the outer diameter of the ring where the slot 503 on the supporting plate 501 is located. When the pressure plate 603 is tightened by the threaded column 601, it can apply uniform pressure to the root of the blade 7 to prevent the blade 7 from falling out of the slot 503 during high-speed rotation.

[0029] The outer surface of the pressure plate 603 is vertically fixedly connected with an insertion rod 604. The insertion rod 604 is a slender cylinder with a diameter matching the width of the slot 504. The insertion rod 604 passes through the interior of the blade 7 and is inserted into the interior of the slot 504. This structural design effectively limits the blade 7 in the axial direction, further improving the reliability of the installation of the blade 7 and ensuring that the blade 7 always maintains a stable working state during the operation of the fan, thereby achieving an efficient large-volume ventilation effect.

[0030] The blades 7 arranged inside the air duct housing 1 adopt an advanced aerodynamic design. The shape of the blades 7 is a twisted curved surface. This shape can make the air change the flow direction more smoothly when flowing through the blades 7, reduce the turbulent loss of the airflow, and improve the aerodynamic efficiency of the fan. The blades 7 are made of high-strength engineering plastic material, which has the advantages of light weight, high strength and corrosion resistance. At the same time, it also has good molding performance and can produce complex shapes to meet aerodynamic design requirements.

[0031] The root of the blade 7 fits tightly with the slot 503 of the carrier plate 501. There are five blades 7, which are evenly distributed on the circumference of the carrier plate 501. This layout enables the fan to generate uniform and stable airflow during operation, avoids local airflow turbulence, and ensures the stability and uniformity of large air volume output.

[0032] Working principle: When the present invention is in use, the motor 3 is started by an external controller, and its output end drives the rotating shaft 4 to rotate, and the rotating shaft 4 then drives the supporting assembly 5, the fixing assembly 6 and the blade 7 to rotate together. When the supporting plate 501 in the supporting assembly 5 rotates, the clamping action of the clamping groove 503 opened on its outer surface and the blade 7 causes the blade 7 to rotate synchronously, thereby promoting the air to flow axially and realizing high-volume ventilation. When the blade 7 needs to be disassembled, the knob 602 in the fixing assembly 6 is rotated to drive the threaded column 601 to rotate and disengage it from the screw limit between the threaded groove 502, so that the pressure plate 603 and the insertion rod 604 move along the threaded column 601. At this time, the insertion rod 604 will be pulled out of the slot 504 and the blade 7, thereby being able to release the clamping limit of the pressure plate 603 on the blade 7. At this time, the blade 7 can be pulled out of the clamping groove 503, and quick disassembly is achieved for cleaning, repair or replacement.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0034] It should be noted that the standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the inventor will not elaborate on them here.

[0035] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0036] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A large air volume axial fan structure, characterized by: The invention comprises an air duct housing (1), wherein the inner wall of the air duct housing (1) is fixedly connected to a mounting frame (2), the outer surface of the mounting frame (2) is fixedly mounted with a motor (3), the output end of the motor (3) is fixedly connected to a rotating shaft (4), and the rotating shaft (4) rotates with the mounting frame (2), a bearing component (5) is provided inside the air duct housing (1), a fixing component (6) is provided inside the air duct housing (1), and blades (7) are provided inside the air duct housing (1).

2. The large air volume axial fan structure according to claim 1, characterized in that: The bearing assembly (5) comprises a bearing plate (501) fixedly connected to one end of the rotating shaft (4) away from the motor (3), and a threaded groove (502) is provided on the inner wall of the bearing plate (501).

3. The large air volume axial fan structure according to claim 2, characterized in that: Five card slots (503) are provided on the outer surface of the carrier plate (501), and the card slots (503) are engaged with the blades (7). Two slots (504) are provided on the inner wall of the card slots (503).

4. The large air volume axial fan structure according to claim 1, characterized in that: The fixing assembly (6) comprises a threaded column (601) threadedly connected to the inner wall of the threaded groove (502), and one end of the threaded column (601) away from the threaded groove (502) is fixedly connected to a knob (602).

5. The large air volume axial fan structure according to claim 4, characterized in that: The outer surface of the threaded column (601) is threadedly connected to a pressure plate (603), and the outer surface of the pressure plate (603) is in contact with the outer surface of the supporting plate (501).

6. The large air volume axial fan structure according to claim 5, characterized in that: An insert rod (604) is fixedly connected to the outer surface of the pressure plate (603), and the insert rod (604) passes through the interior of the blade (7) and is inserted into the interior of the slot (504).

Images