Blade angle adjusting equipment for axial flow fan

Abstract

The utility model relates to the field of fans, and particularly discloses axial flow fan blade angle adjusting equipment which comprises a shaft sleeve connected with a first motor driving shaft and a plurality of blades connected to the shaft sleeve. The shaft sleeve is provided with an adjusting assembly used for adjusting the blade angle. The adjusting assembly comprises a connecting sleeve fixedly arranged at one end of the shaft sleeve, a second motor installed in the connecting sleeve, a rotating shaft arranged at the output end of the second motor, a first bevel gear fixedly arranged on the rotating shaft, a connecting base rotationally arranged on the shaft sleeve in a penetrating mode and fixedly connected with the blades, and a connecting rod fixedly arranged on the connecting base. And the second bevel gear is fixedly arranged on the connecting rod and is meshed with the first bevel gear. The blade angle can be adjusted, and the ventilation efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of fans, and in particular to an axial flow fan blade angle adjustment device. Background Technology

[0002] Fans on the market typically consist of blades, a drive motor, and a support frame. The support frame can be divided into adjustable support frames and fixed support frames. Fixed support frames are mostly used to fix and support fan components and generally cannot adjust the wind direction. Adjustable support frames usually require the drive motor and blades as a whole to adjust the direction. Generally speaking, the bushing is connected to the drive end of the drive motor, while the fan blade impeller is usually fixedly connected to the bushing, and the angle cannot be adjusted, which is also inconvenient for later maintenance. Utility Model Content

[0003] To address the issue of adjusting blade angle and improving ventilation efficiency, this application provides an axial flow fan blade angle adjustment device.

[0004] The axial flow fan blade angle adjustment device provided in this application adopts the following technical solution:

[0005] It includes a bushing that connects to the drive shaft of the first motor and several blades connected to the bushing;

[0006] The bushing is equipped with an adjustment component for adjusting the blade angle;

[0007] The adjustment assembly includes a connecting sleeve fixedly mounted on one end of the bushing, a second motor installed inside the connecting sleeve, a rotating shaft mounted on the output end of the second motor and rotatably inserted into the bushing at one end, a first bevel gear fixedly mounted on the rotating shaft, a connecting seat rotatably passing through the bushing and fixedly connected to the blade, a connecting rod fixedly mounted on the connecting seat, and a second bevel gear fixedly mounted on the connecting rod and meshing with the first bevel gear.

[0008] By adopting the above technical solution, when it is necessary to adjust the blade angle, the second motor drives the rotating shaft to rotate, which in turn drives the first bevel gear to rotate and the second bevel gear to mesh and rotate, thereby driving the connecting seat to rotate. The rotation of the connecting seat drives the rotation of the blade, thereby changing the blade angle and making it easier to adjust the air volume introduced by the blade rotation, thus improving ventilation efficiency.

[0009] In one possible implementation, a first receiving cavity is provided in the connecting seat, a blade rod is fixedly provided on the blade, a stud is fixedly provided in the first receiving cavity, and a threaded groove that mates with the stud is provided in the blade rod.

[0010] In one possible implementation, the connecting sleeve is bullet-shaped.

[0011] In one possible implementation, the outer wall of the bushing is provided with a plurality of limiting components corresponding to the connecting seat; the limiting components include a mounting seat fixedly disposed on the outer wall of the bushing and a limiting member disposed in the mounting seat, the connecting seat is provided with an annular limiting groove, and one end of the limiting member is inserted into the annular limiting groove.

[0012] In one possible implementation, the limiting component further includes a second receiving cavity within the mounting base, a connecting block movably disposed within the second receiving cavity, and a first elastic member connecting the inner wall of the second receiving cavity and the connecting block. One end of the connecting block abuts against the limiting member, and one end of the connecting block has a groove for the limiting member to be inserted.

[0013] In one possible implementation, the limiting component further includes a cover plate connected to the mounting base and a pressing block fixedly disposed at the lower end of the cover plate, with one end of the pressing block inserted into the second receiving cavity and abutting against the connecting block.

[0014] In one possible implementation, the cover plate has a through groove for inserting the connector, and a sealing ring is provided on the inner wall of the through groove, which is fitted onto the outer wall of the connector.

[0015] In one possible implementation, the cover plate has a plurality of through holes, and fasteners are installed in the through holes. One end of the fastener is inserted into the mounting base and screwed to the mounting base.

[0016] In one possible implementation, the fastener is a screw.

[0017] In one possible implementation, the mounting base has a groove communicating with the second receiving cavity, and a limiting member is located in the groove. The limiting member includes a push rod that is movably inserted through the groove, a connecting ring fixed on the outer wall of the push rod, and a second elastic member disposed between the connecting ring and the inner wall of the groove.

[0018] In summary, this application includes the following beneficial technical effects: when it is necessary to adjust the blade angle, the second motor drives the rotating shaft to rotate, which in turn drives the first bevel gear to rotate, and at the same time, the second bevel gear meshes and rotates, which drives the connecting seat to rotate. The rotation of the connecting seat drives the rotation of the blade, thereby changing the blade angle, which in turn facilitates the adjustment of the air volume introduced by the blade rotation and improves ventilation efficiency. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram based on an embodiment of this application;

[0020] Figure 2 This is a cross-sectional schematic diagram of an embodiment, mainly showing the limiting component;

[0021] Figure 3 yes Figure 2 An enlarged schematic diagram of part A;

[0022] Figure 4 yes Figure 3 An enlarged schematic diagram of part B.

[0023] Reference numerals: 1. Bushing; 2. Blade; 3. Connecting sleeve; 4. Second motor; 5. Rotating shaft; 6. First bevel gear; 7. Connecting seat; 8. Connecting rod; 9. Second bevel gear; 10. First receiving cavity; 11. Blade rod; 12. Stud; 13. Limiting assembly; 14. Mounting seat; 15. Limiting element; 16. Connecting block; 17. First elastic element; 18. Cover plate; 19. Extrusion block; 20. Second receiving cavity; 21. Groove; 22. Annular limiting groove; 23. Groove; 24. Top rod; 25. Connecting ring; 26. Second elastic element; 27. Through groove; 28. Sealing ring; 29. ​​Through hole; 30. Fastener. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0025] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0026] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0027] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] Reference Figure 1-4An axial flow fan blade angle adjustment device includes a bushing 1 connected to the drive shaft of a first motor (not shown in the attached diagram) and several blades 2 connected to the bushing 1. The blades 2 are arc-shaped plate structures and are arranged circumferentially perpendicular to the bushing 1. The bushing 1 is provided with an adjustment assembly for adjusting the angle of the blades 2; specifically, the adjustment assembly includes a connecting sleeve 3, a second motor 4, a rotating shaft 5, a first bevel gear 6, a connecting seat 7, a connecting rod 8, and a second bevel gear 9. The connecting sleeve 3 is fixedly mounted on one end of the bushing 1 and is bullet-shaped, thereby reducing wind resistance and improving the service life of the blades 2. The second motor 4 is installed inside the connecting sleeve 3, the rotating shaft 5 is located on the output end of the second motor 4 and one end is rotatably inserted into the bushing 1, the first bevel gear 6 is fixedly mounted on the rotating shaft 5, the connecting seat 7 is rotatably inserted through the bushing 1 and fixedly connected to the blades 2, the connecting rod 8 is fixedly mounted on the connecting seat 7, and the second bevel gear 9 is fixedly mounted on the connecting rod 8 and meshes with the first bevel gear. When it is necessary to adjust the angle of blade 2, the second motor 4 drives the rotating shaft 5 to rotate, which in turn drives the first bevel gear 6 to rotate and the second bevel gear 9 to mesh and rotate, which in turn drives the connecting seat 7 to rotate. The rotation of the connecting seat 7 drives the rotation of blade 2, thereby changing the angle of blade 2. This makes it easier to adjust the air volume introduced by the rotation of blade 2 and improve ventilation efficiency.

[0029] The connecting seat 7 has a first receiving cavity 10. A blade rod 11 is fixedly mounted on the blade 2. A stud 12 is fixedly mounted in the first receiving cavity 10. The blade rod 11 has a threaded groove that mates with the stud 12. This facilitates the disassembly, replacement, and maintenance of the blade 2.

[0030] The outer wall of the bushing 1 is provided with several limiting components 13 corresponding to the connecting seat 7; the limiting component 13 includes a mounting base 14, a limiting member 15, a connecting block 16, a first elastic member 17, a cover plate 18, and a pressing block 19; the mounting base 14 is fixedly disposed on the outer wall of the bushing 1, and the mounting base 14 is provided with a second receiving cavity 20 and a groove 21 communicating with the second receiving cavity 20. The limiting member 15 is movably inserted through the groove 21, and the connecting block 16 is movably disposed in the second receiving cavity 20, with one end of the connecting block 16 abutting against the limiting member 15. An elastic element 17 is a spring, one end of which is connected to the connecting block 16 and the other end is connected to the inner wall of the second receiving cavity 20; wherein, the connecting seat 7 is provided with an annular limiting groove 22 at a position corresponding to the groove 21, one end of the limiting element 15 is inserted into the annular limiting groove 22, and one end of the connecting block 16 is provided with a groove 23 for the limiting element 15 to be inserted; the cover plate 18 is connected to the mounting base 14, and the pressing block 19 is fixedly connected to the bottom of the cover plate 18, and one end of the pressing block 19 is located in the second receiving cavity 20 and abuts against the connecting block 16. The cover plate 18 is installed on the mounting base 14. The pressing block 19 presses the connecting block 16, the connecting block 16 moves down, one end of the limiting member 15 is disengaged from the groove 21, and the limiting member 15 moves toward one end of the connecting seat 7, so that the other end of the limiting member 15 is inserted into the annular limiting groove 22 to limit the connecting seat 7, thereby ensuring that the connecting seat 7 can rotate stably, and thus improving the stability of the angle adjustment of the blade 2.

[0031] The limiting member 15 includes a push rod 24, a connecting ring 25, and a second elastic member 26. The push rod 24 is movably inserted into the groove 21, the connecting ring 25 is fixed on the outer wall of the push rod 24, and the second elastic member 26 is a spring, one end of which is connected to the connecting ring 25 and the other end of which is connected to the inner wall of the groove 21.

[0032] The cover plate 18 has a through groove 27 for the connector 7 to be inserted. A sealing ring 28 is provided on the inner wall of the through groove 27 and is fitted onto the outer wall of the connector 7.

[0033] The cover plate 18 has several through holes 29, and fasteners 30 are installed in the through holes 29. One end of the fastener 30 is inserted into the mounting base 14 and screwed to the mounting base 14. The fastener 30 is a screw. This facilitates the installation and removal of the cover plate 18 and the mounting base 14.

[0034] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0035] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A kind of axial flow fan blade angle adjusting equipment, comprising the shaft sleeve (1) connected first motor drive shaft and several blades (2) connected to the shaft sleeve (1); Its characterized in that: The shaft sleeve (1) is equipped with the adjusting assembly for adjusting the angle of the blade (2); The adjusting assembly includes the connecting sleeve (3) fixed on one end of the shaft sleeve (1), the second motor (4) installed in the connecting sleeve (3), the rotating shaft (5) inserted into the shaft sleeve (1) at one end and arranged on the output end of the second motor (4), the first bevel gear (6) fixed on the rotating shaft (5), the connecting seat (7) rotatingly penetrated on the shaft sleeve (1) and fixedly connected with the blade (2), the connecting rod (8) fixedly arranged on the connecting seat (7), and the second bevel gear (9) fixedly arranged on the connecting rod (8) and engaged with the first bevel gear.

2. The axial flow fan blade angle adjusting equipment according to claim 1, wherein: A first accommodating cavity (10) is formed in the connecting seat (7), a blade rod (11) is fixedly arranged on the blade (2), a stud (12) is fixedly arranged in the first accommodating cavity (10), and a threaded groove is formed in the blade rod (11) and matched with the stud (12).

3. The axial flow fan blade angle adjusting equipment according to claim 1, wherein: The connecting sleeve (3) is in the shape of a bullet.

4. The axial flow fan blade angle adjusting equipment according to claim 1, wherein: A plurality of limiting assemblies (13) corresponding to the connecting seat (7) are arranged on the outer wall of the shaft sleeve (1); the limiting assembly (13) includes a mounting seat (14) fixedly arranged on the outer wall of the shaft sleeve (1) and a limiting member (15) arranged in the mounting seat (14); an annular limiting groove (22) is formed in the connecting seat (7), and one end of the limiting member (15) is inserted into the annular limiting groove (22).

5. The axial flow fan blade angle adjusting equipment according to claim 4, wherein: The limiting assembly (13) further includes a second accommodating cavity (20) formed in the mounting seat (14), a connecting block (16) movably arranged in the second accommodating cavity (20), a first elastic member (17) connected between the inner wall of the second accommodating cavity (20) and the connecting block (16), one end of the connecting block (16) abuts against the limiting member (15), and a groove (23) is formed in one end of the connecting block (16) for inserting the limiting member (15).

6. The axial flow fan blade angle adjusting equipment according to claim 5, wherein: The limiting assembly (13) further includes a cover plate (18) connected to the mounting seat (14) and an extrusion block (19) fixedly arranged at the lower end of the cover plate (18); one end of the extrusion block (19) is inserted into the second accommodating cavity (20) and abuts against the connecting block (16).

7. The axial flow fan blade angle adjusting equipment according to claim 6, wherein: The cover plate (18) is provided with a through slot (27) for inserting the connecting seat (7), and the inner wall of the through slot (27) is provided with a sealing ring (28) which is sleeved on the outer wall of the connecting seat (7).

8. The axial flow fan blade angle adjusting device according to claim 7, characterized in that: The cover plate (18) is provided with a plurality of through holes (29), and the through holes (29) are provided with fasteners (30) which are inserted into the mounting seat (14) and are screwed with the mounting seat (14).

9. The axial flow fan blade angle adjusting device according to claim 8, characterized in that: The fastener (30) is a screw rod.

10. The axial flow fan blade angle adjusting device according to claim 4, characterized in that: The mounting seat (14) is provided with a groove (21) which is communicated with the second accommodating cavity (20), and the limiting piece (15) is located in the groove (21), and the limiting piece (15) comprises a top rod (24) which is movably penetrated in the groove (21), a connecting ring (25) which is fixedly arranged on the outer wall of the top rod (24), and a second elastic piece (26) which is arranged between the connecting ring (25) and the inner wall of the groove (21).

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