A movable low-noise head fan

Abstract

The utility model relates to the field of fan, concretely relates to a movable low-noise head shaking fan. A movable low-noise head shaking fan of the utility model, including the silencer elbow, fan assembly, muffler and nozzle that set gradually, fan assembly includes the air cylinder, be equipped with the connecting shaft on the air cylinder, still include the channel steel base, be equipped with the bearing seat on the channel steel base, set up the connecting shaft on the bearing seat, be equipped with the locating locking plate on the air cylinder, be equipped with a plurality of openings on the locating locking plate, be equipped with the screw hole on the channel steel base, set up the bolt in the screw hole, the bolt is set up with the cooperation of the opening, the channel steel base bottom is equipped with heavy guide rail wheel.

Description

Technical Field

[0001] This utility model relates to the field of fans, specifically to a portable, low-noise oscillating fan. Background Technology

[0002] A ventilation fan is a machine used to transport gas. Many machines can be used to transport gas, such as ventilators, blowers, and compressors; a ventilation fan is just one type. We collectively refer to these gas transport machines, including ventilators, blowers, and compressors, as fans. From an energy perspective, a fan is a machine that transfers and converts energy. Mechanical energy input from the outside is transferred to the gas within the fan, converting it into pressure energy to overcome flow resistance. Fans can be classified into different categories based on function, operating principle, etc., resulting in a wide variety of types. This study focuses on axial flow fans.

[0003] In recent years, with the continuous development of my country's economic construction, ventilation fans have developed rapidly, with significant growth in both quantity and variety. These include: 1) axial flow fans used for ventilation in factories, hospitals, and other buildings; 2) mine fans used for supplying fresh air to underground mines or ventilating working faces; 3) smoke exhaust fans used for fire-fighting smoke extraction in high-rise buildings; and 4) axial flow fans used for ventilation and smoke extraction in subway tunnels. Ventilation fans have become an indispensable piece of equipment in modern ventilation systems.

[0004] For applications such as underground mining operations, air conditioning and ventilation in textile factories, and ventilation during long-distance tunnel construction, the selection and use of fans is essential. They can solve the problem of transporting fresh air in underground mines and tunnels, and also remove some toxic and harmful gases from the working environment. In situations where the working environment in some factories is too hot or dry, fans, in conjunction with air conditioning systems, can also provide air supply and humidification functions. However, these working environments typically involve large working areas and require extensive ventilation, so traditional floor-mounted axial flow fans have the following shortcomings: Traditional axial flow fans are primarily floor-mounted with a straight-inlet and straight-outlet design. Once installed, the fan angle and ventilation area are difficult to adjust, and some fans are quite noisy, requiring the connection of other noise reduction equipment. However, mines, factories, and tunnels often require mobile fans with adjustable angles to meet on-site operational requirements, and strict control of noise pollution from workers is essential. Traditional axial flow fans cannot be easily moved; if movement is necessary, it often requires transporting noise reduction equipment, which is time-consuming and labor-intensive.

[0005] Therefore, the present invention will improve upon the above-mentioned shortcomings. Summary of the Invention

[0006] This utility model aims to provide a portable, low-noise oscillating fan, the specific solution of which is as follows: A portable, low-noise oscillating fan includes a silencer elbow, a fan assembly, a silencer, and a nozzle arranged sequentially. The fan assembly includes a fan duct with a connecting shaft on it, and a channel steel base with a bearing seat on it. The connecting shaft is mounted on the bearing seat. The fan duct has a positioning locking plate with several openings. The channel steel base has screw holes with bolts installed inside them. The bolts engage with the openings. The bottom of the channel steel base has heavy-duty guide wheels.

[0007] The air duct is provided with a shaft reinforcement member, which is configured to cooperate with the connecting shaft.

[0008] The air duct is provided with a flange ring, an intermediate ring, an intermediate flange ring and an outer reinforcing rib, and an outer plate is provided outside the flange ring, the intermediate flange ring and the outer reinforcing rib.

[0009] The space formed by the flange ring, the middle flange ring, and the outer reinforcing ribs is filled with centrifugal glass wool.

[0010] The air duct is equipped with a junction box base.

[0011] It also includes channel steel guide rails, and the heavy-duty guide rail wheels are mounted on the channel steel guide rails.

[0012] The fan assembly is connected to the silencer and silencer elbow by M8*20 hex bolts; the nozzle is connected to the silencer by M8*20 hex bolts; the channel steel base is connected to the bearing seat by M16*70 bolts; the fan assembly is connected to the bearing seat by a connecting shaft; the positioning locking plate is fixed to the channel steel base by M8*40 bolts.

[0013] This utility model analyzes the structure of traditional axial flow fans and the requirements for solving the current problem. The structure of the traditional axial flow fan is modified by adding a moving device, an adjusting device, and a noise reduction device. This enables the fan to meet functions such as mobility, low noise, and oscillation. Specifically: 1. Implementation of the movable function: The wind turbine can be moved within its working area by laying channel steel guide rails on site, thanks to its built-in channel steel base and heavy-duty guide rails (including brakes and rail wheels, which are existing technologies and will not be described in detail).

[0014] 2. Implementation of air outlet angle adjustment function: The air outlet angle of the fan can be adjusted by connecting the upper shaft of the fan body with the bearing seat installed on the channel steel base (and locked by the positioning locking plate).

[0015] 3. Noise reduction function: By modifying the structure of the fan casing (adding flange rings, intermediate flange rings and outer reinforcing ribs, forming a space), and filling it with centrifugal glass wool, the fan body has a certain noise reduction effect. Then, a silencer is installed and connected to the fan body to achieve a portable low-noise function. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a portable low-noise oscillating fan according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a portable low-noise oscillating fan according to the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the fan assembly in a portable low-noise oscillating fan according to the present invention; The labels are as follows: 1-Fan assembly; 2-Silencer; 3-Silencer elbow; 4-Nozzle; 5-Channel steel base; 6-Protective net; 7-Bearing seat; 8-Heavy-duty guide wheel; 9-Channel steel guide rail; 11-Air duct; 12-Shaft reinforcement; 13-Connecting shaft; 14-Outer reinforcing rib; 15-Positioning locking plate; 16-Outer plate; 17-Flange ring; 18-Lifting lug; 19-Intermediate flange ring; 110-Intermediate ring; 111-Junction box base. Detailed Implementation

[0017] The following is combined Figure 1-3 Further explanation: Appendix Figure 1-2 The diagram shows a portable, low-noise oscillating fan, consisting of a fan assembly 1, a silencer 2, a silencer elbow 3, a nozzle 4, a channel steel base 5, a protective net 6, a bearing housing 7, heavy-duty guide wheels (with brakes) 8, and a channel steel guide rail 9. The fan assembly 1 is connected to the silencer 2 and silencer elbow 3 via M8*20 hex bolts. The nozzle 4 is connected to the silencer 2 via M8*20 hex bolts. The channel steel base 5 is connected to the bearing housing 7 via M16*70 bolts. The fan assembly 1 and bearing housing 7 are connected via a connecting shaft 13 welded to the fan body and secured to the channel steel base 5 with M8*40 bolts and a positioning locking plate 15. The heavy-duty guide wheels 8 are connected to the channel steel base 5 with M10 bolts. The channel steel guide rail 9 is installed on-site according to the site conditions and the required mobility range. The entire fan and channel steel guide rail 9 are moved via the heavy-duty guide wheels 8.

[0018] Appendix Figure 2The diagram shows a schematic of fan assembly 1, whose main components include a fan duct 11, shaft reinforcement 12, connecting shaft 13, outer reinforcing ribs 14, positioning locking plate 15, outer plate 16, flange ring 17, lifting lug 18, intermediate flange ring 19, intermediate ring 110, and junction box base 111. The impeller motor and other components inside the fan duct are manufactured according to conventional axial flow fan specifications and are not shown or described. All fan duct components are welded to the dimensions shown in the diagram. The cavity formed by the fan duct 11, outer reinforcing ribs 14, and flanges (flange ring 17 and intermediate flange ring 19) serves as the space for filling centrifugal glass wool. The supporting flange ring 17 and outer reinforcing ribs 14 act as the mounting and connecting components covering the outer plate 16, creating a self-absorbing sound effect. The flange ring connects the silencer 2 and the silencer elbow 3, the connecting shaft 13 connects the outer bearing seat 7, and the positioning locking plate 15 is used to fix the angle with the channel steel base 5 after angle adjustment.

[0019] Portable low-noise oscillating fans can be assembled as a whole and transported to the site, or transported in parts and assembled on-site, depending on different requirements. The adjustment angle can be set at the factory and adjusted on-site. Channel steel guide rails 9 are installed according to site requirements, allowing the fan to move within the guide rail range. The fan's built-in silencer 2 is adjustable in size and length to meet site noise requirements.

[0020] This embodiment designs a portable, low-noise oscillating fan. The fan can be moved on-site using its built-in moving device (i.e., heavy-duty guide wheels 8 and channel steel guide rails 9), and the position of the fan's outlet can be adjusted using an adjustable angle device (i.e., rotating via connecting shaft 13 and then fixing via positioning locking plate 15). The fan has built-in noise reduction equipment (i.e., silencer 2, sound-absorbing elbow 3, and centrifugal glass wool) to achieve noise reduction. This invention solves the problems of traditional axial flow fans being difficult to move on-site and having non-adjustable outlet positions. Simultaneously, the built-in noise reduction function improves the working environment for workers and avoids the inconvenience of moving other silencer equipment.

[0021] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable, low-noise oscillating fan, characterized in that: The device includes a silencer elbow, a fan assembly, a silencer, and a nozzle arranged sequentially. The fan assembly includes a fan duct with a connecting shaft, a channel steel base, a bearing seat on the channel steel base, a connecting shaft on the bearing seat, a positioning locking plate on the fan duct with several openings, a screw hole on the channel steel base with a bolt inside the screw hole, the bolt engaging with the opening, and heavy-duty guide wheels at the bottom of the channel steel base.

2. The portable low-noise oscillating fan as described in claim 1, characterized in that: The air duct is provided with a shaft reinforcement member, which is configured to cooperate with the connecting shaft.

3. A portable low-noise oscillating fan as described in claim 1, characterized in that: The air duct is provided with a flange ring, an intermediate ring, an intermediate flange ring and an outer reinforcing rib, and an outer plate is provided outside the flange ring, the intermediate flange ring and the outer reinforcing rib.

4. A portable low-noise oscillating fan as described in claim 3, characterized in that: The space formed by the flange ring, the middle flange ring, and the outer reinforcing ribs is filled with centrifugal glass wool.

5. A portable low-noise oscillating fan as described in claim 1, characterized in that: The air duct is equipped with a junction box base.

6. A portable low-noise oscillating fan as described in claim 1, characterized in that: It also includes channel steel guide rails, and the heavy-duty guide rail wheels are mounted on the channel steel guide rails.

7. A portable low-noise oscillating fan as described in claim 2, characterized in that: The fan assembly is connected to the silencer and silencer elbow by M8*20 hex bolts; the nozzle is connected to the silencer by M8*20 hex bolts; the channel steel base is connected to the bearing seat by M16*70 bolts; the fan assembly is connected to the bearing seat by a connecting shaft; the positioning locking plate is fixed to the channel steel base by M8*40 bolts.

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