Blade-adjustable mechanical ventilation tower fan structure

Abstract

The utility model discloses a blade-adjustable mechanical ventilation tower fan structure which comprises a lower machine base, an outer shell is fixedly installed on the upper surface of the lower machine base, a motor installation plate is fixedly installed in the outer shell, a driving motor is fixedly installed on the upper surface of the motor installation plate through bolts, and an output shaft of the driving motor is fixedly connected with a rotating shaft. A lower installation seat is fixedly installed at the bottom end of the rotating shaft, a plurality of first fixing flange plates are fixedly installed on the outer wall of the side face of the lower installation seat, and the first fixing flange plates are circumferentially distributed at equal intervals through the center circle point of the rotating shaft. The angle adjusting range is large, and the 360-degree rotation adjusting effect can be achieved, so that the fan blade of the mechanical ventilation tower can be suitable for more use environments and use requirements, the use limitation that the inclination angle of a fan blade of a traditional mechanical ventilation tower cannot be adjusted is effectively avoided, and the good use effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical ventilation towers, in particular to a mechanical ventilation tower fan structure with adjustable blades. Background Art

[0002] As a cooling device for the cooling water of the main auxiliary heat exchangers of thermal power plants, the mechanical ventilation tower exchanges heat between air and the auxiliary heat exchanger cooling heat source to reduce the cooling water temperature of the heat exchanger. Its operating safety and reliability directly affect the safety of the main auxiliary equipment of the unit.

[0003] Whether a mechanical ventilation tower can operate safely and stably depends on the reliability of its fans and their drive components. In related technologies, mechanical ventilation towers are designed to drive high-speed motors + connecting shafts + reducers + fans. The drive motor is connected to the reducer via a connecting shaft. The reducer has horizontal input and vertical output, and the vertical output is connected to the fan.

[0004] The blade inclination angle of the fan of the traditional mechanical ventilation tower is mostly fixed structural design. Therefore, in actual use, the blade angle has the limitation of being fixed and non-adjustable, which cannot be applied to more usage requirements and the structural adjustment flexibility is poor. Therefore, the utility model proposes a blade-adjustable mechanical ventilation tower fan structure. Utility Model Content

[0005] The purpose of the present invention is to provide a mechanical ventilation tower fan structure with adjustable blades to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a blade-adjustable mechanical ventilation tower fan structure, comprising a lower base, an outer shell fixedly mounted on the upper surface of the lower base, a motor mounting plate fixedly mounted inside the outer shell, a drive motor fixedly mounted on the upper surface of the motor mounting plate by bolts, the output shaft of the drive motor fixedly connected to a rotating shaft, a lower mounting base fixedly mounted on the bottom end of the rotating shaft, a plurality of No. 1 fixed flanges fixedly mounted on the side outer wall of the lower mounting base, a plurality of No. 1 fixed flanges are distributed circumferentially at equal intervals through the center point of the rotating shaft, a fan shaft is fixedly mounted at the center position of the outer surface of the No. 1 fixed flange, fan blades are rotatably mounted on the fan shaft through bearings, and rotating flanges are fixedly connected to the outer walls on both sides of the fan blades through connecting columns.

[0007] Preferably, the rotating flange is sleeved on the outside of the fan shaft, and the rotating flange is rotatably connected to the fan shaft.

[0008] Preferably, a second fixed flange is fixedly mounted on the end of the fan shaft away from the first fixed flange.

[0009] Preferably, a fan cover is fixedly mounted on the upper surface of the outer shell, and the fan cover is arranged outside the drive motor.

[0010] Preferably, a ventilation plate is fixedly installed inside the top end of the fan cover.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model has the characteristic of freely adjustable fan blade angle, the blade adjustment flexibility is stronger, the angle adjustment range is large, and the 360° rotation adjustment effect can be achieved, so that the utility model can be applied to more use environments and use requirements, effectively avoiding the use limitation of the traditional mechanical ventilation tower fan blade inclination angle cannot be adjusted, and has a better use effect;

[0013] At the same time, by rotating the flange and the screw, the limiting and fixing connection with the No. 1 fixed flange and the No. 2 fixed flange can be completed, so that the angle of the adjusted fan blades can be limited and fixed, thereby improving the structural stability of the fan during operation, and having good safety effects. The fan blade adjustment structure of the mechanical ventilation tower of the utility model is relatively simple, with low manufacturing and maintenance costs, convenient angle adjustment, a large range, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of a fan structure assembly of a mechanical ventilation tower according to an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the bottom of the mechanical ventilation tower fan structure of an embodiment of the present invention when viewed from above;

[0016] Figure 3 This is a schematic diagram of the internal structure of the outer shell of an embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of the overall structure of the fan blades according to an embodiment of the present utility model;

[0018] Figure 5 For the embodiment of the utility model Figure 4 Schematic diagram of the enlarged structure of area A.

[0019] In the figure: 1. Lower base; 2. Outer shell; 3. Motor mounting plate; 4. Drive motor; 5. Rotating shaft; 6. Lower mounting base; 7. Fixed flange No. 1; 8. Fan shaft; 9. Fixed flange No. 2; 10. Fan blades; 11. Connecting column; 12. Rotating flange; 13. Fan cover; 14. Ventilation plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 making creative efforts are within the scope of protection of the present invention.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] See also Figure 1-5 The utility model provides an embodiment: a blade-adjustable mechanical ventilation tower fan structure, including a lower base 1, an outer shell 2 is fixedly installed on the upper surface of the lower base 1, a motor mounting plate 3 is fixedly installed inside the outer shell 2, a driving motor 4 is fixedly installed on the upper surface of the motor mounting plate 3 by bolts, the output shaft of the driving motor 4 is fixedly connected to the rotating shaft 5, and the bottom end of the rotating shaft 5 is fixedly installed with a lower mounting base 6, so that the driving motor 4 can drive the lower mounting base 6 to rotate synchronously through the rotating shaft 5, providing the necessary conditions for the operation of the fan;

[0024] Please refer to the instruction manual for details Figure 4 and Figure 5 As shown, a plurality of No. 1 fixed flanges 7 are fixedly mounted on the side outer wall of the lower mounting seat 6. The plurality of No. 1 fixed flanges 7 are circumferentially distributed at equal intervals through the center point of the rotating shaft 5. A fan shaft 8 is fixedly mounted at the center position of the outer surface of the No. 1 fixed flange 7. A fan blade 10 is rotatably mounted on the fan shaft 8 through a bearing. Rotating flanges 12 are fixedly connected to the outer walls of both sides of the fan blade 10 through connecting columns 11.

[0025] The rotating flange 12 is sleeved on the outside of the fan shaft 8 , and the rotating flange 12 is rotatably connected to the fan shaft 8 .

[0026] However, please refer to the instructions for details. Figure 4 As shown, a second fixing flange 9 is fixedly mounted on the end of the fan shaft 8 away from the first fixing flange 7, and fixing connection holes for fixed connection are opened on the plurality of flanges;

[0027] According to the above structure, when the driving motor 4 is working, it will drive the rotating shaft 5 to rotate synchronously through the output shaft. The rotation of the rotating shaft 5 can synchronously drive the lower mounting base 6 and the plurality of fan blades 10 thereon to rotate synchronously, thereby ensuring the normal operation of the mechanical ventilation tower fan of the utility model.

[0028] When the inclination angle of the fan blades 10 needs to be adjusted, the maintenance personnel can bend the fan blades 10 to one side to rotate the fan blades 10. When the fan blades 10 rotate on the fan shaft 8, the inclination angle of the fan blades 10 will change, thereby completing the angle adjustment work of the fan blades 10. In actual use, the fan blades 10 have the characteristic of freely adjustable angles, the blades have stronger adjustment flexibility, and the angle adjustment range is large, with a 360° rotation adjustment effect. This makes the utility model applicable to more use environments and use requirements, effectively avoiding the use limitation of the traditional mechanical ventilation tower fan blades that cannot adjust the inclination angle, and has a better use effect.

[0029] When it is necessary to limit and fix the angle of the fan after adjustment, since the fan blades 10 will drive the side rotating flanges 12 to rotate synchronously through the connecting columns 11 on both sides, when the fan blades 10 rotate to a suitable inclination angle, the holes on the rotating flanges 12 on both sides are adjusted and aligned with the holes on the No. 1 fixed flange 7 and the No. 2 fixed flange 9, and then screws for limiting and fixing are installed in the rotating flanges 12 on both sides. In this way, the limiting and fixing connection with the No. 1 fixed flange 7 and the No. 2 fixed flange 9 can be completed by the rotating flanges 12 and the screws, so that the angle of the adjusted fan blades 10 can be limited and fixed, thereby improving the structural stability of the fan during operation and having good safety effect. In addition, the fan blade adjustment structure of the mechanical ventilation tower of the utility model is relatively simple, with low manufacturing and maintenance costs, and is suitable for popularization and use.

[0030] In this embodiment, in order to provide external protection for the drive motor 4 of the fan, a fan cover 13 is fixedly mounted on the upper surface of the outer shell 2. The fan cover 13 is arranged outside the drive motor 4. The fan cover 13 can protect the internal drive motor 4 and improve the service life of the motor.

[0031] In order to ensure the ventilation and heat dissipation effect of the drive motor 4 , a ventilation plate 14 is fixedly installed inside the top end of the fan cover 13 .

[0032] Working principle: The utility model is provided with a drive motor 4, which can drive the lower mounting seat 6 to rotate synchronously through the rotating shaft 5, so that the rotation of the lower mounting seat 6 can drive the plurality of fan blades 10 to operate, thereby ensuring the normal use of the fan structure of the mechanical ventilation tower of the utility model;

[0033] When the inclination angle of the fan blades 10 needs to be adjusted, the maintenance personnel can bend the fan blades 10 to one side to rotate the fan blades 10. When the fan blades 10 rotate on the fan shaft 8, the inclination angle of the fan blades 10 will change, thereby completing the angle adjustment work of the fan blades 10. In actual use, the fan blades 10 have the characteristic of being freely adjustable in angle, the blades have stronger adjustment flexibility, and the angle adjustment range is large, and the rotation angle adjustment effect of 360 degrees can be achieved. Therefore, the utility model can be applied to more use environments and use requirements, effectively avoiding the use limitation of the traditional mechanical ventilation tower fan blades that cannot be adjusted in inclination angle, and has better use effect.

[0034] When it is necessary to limit and fix the angle of the fan after adjustment, since the fan blades 10 will drive the side rotating flanges 12 to rotate synchronously through the connecting columns 11 on both sides, when the fan blades 10 rotate to a suitable inclination angle, the holes on the rotating flanges 12 on both sides are adjusted and aligned with the holes on the No. 1 fixed flange 7 and the No. 2 fixed flange 9, and then screws for limiting and fixing are installed in the rotating flanges 12 on both sides. In this way, the limiting and fixing connection with the No. 1 fixed flange 7 and the No. 2 fixed flange 9 can be completed by the rotating flanges 12 and the screws, so that the angle of the adjusted fan blades 10 can be limited and fixed, thereby improving the structural stability of the fan during operation and having good safety effect. In addition, the fan blade adjustment structure of the mechanical ventilation tower of the utility model is relatively simple, with low manufacturing and maintenance costs, and is suitable for popularization and use.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A blade-adjustable mechanical ventilation tower fan structure, comprising a lower base (1), characterized in that: The upper surface of the lower machine base (1) is fixedly mounted with an outer shell (2), the interior of the outer shell (2) is fixedly mounted with a motor mounting plate (3), the upper surface of the motor mounting plate (3) is fixedly mounted with a driving motor (4) by means of bolts, the output shaft of the driving motor (4) is fixedly connected with a rotating shaft (5), the bottom end of the rotating shaft (5) is fixedly mounted with a lower mounting seat (6), a plurality of No. 1 fixed flanges (7) are fixedly mounted on the side outer wall of the lower mounting seat (6), the plurality of No. 1 fixed flanges (7) are distributed circumferentially at equal intervals through the center point of the rotating shaft (5), a fan shaft (8) is fixedly mounted at the center position of the outer surface of the No. 1 fixed flange (7), a fan blade (10) is rotatably mounted on the fan shaft (8) through a bearing, and the outer walls on both sides of the fan blade (10) are fixedly connected with a rotating flange (12) through a connecting column (11).

2. The blade-adjustable mechanical ventilation tower fan structure according to claim 1, characterized in that: The rotating flange (12) is sleeved on the outside of the fan shaft (8), and the rotating flange (12) is rotatably connected to the fan shaft (8).

3. The blade-adjustable mechanical ventilation tower fan structure according to claim 1, characterized in that: A second fixed flange (9) is fixedly mounted on one end of the fan shaft (8) away from the first fixed flange (7).

4. The blade-adjustable mechanical ventilation tower fan structure according to claim 1, characterized in that: A fan cover (13) is fixedly mounted on the upper surface of the outer shell (2), and the fan cover (13) is arranged outside the drive motor (4).

5. The blade-adjustable mechanical ventilation tower fan structure according to claim 4, characterized in that: A ventilation plate (14) is fixedly installed inside the top end of the fan housing (13).

Images