CN213598214U

CN213598214U - Blade-adjustable axial flow fan

Info

Publication number: CN213598214U
Application number: CN202022181411.9U
Authority: CN
Inventors: 任向阳; 任定国
Original assignee: Lishui Fengsheng Electromechanical Manufacturing Co ltd
Current assignee: Lishui Fengsheng Electromechanical Manufacturing Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-07-02
Anticipated expiration: 2030-09-28

Abstract

The utility model provides an axial flow fan with adjustable blades, which comprises a fan shell, a motor frame and a driving motor, the blade mounting part comprises a cylindrical mounting body and a blade mounting block, an annular sliding groove which is coaxial with the mounting body is formed in the surface of the mounting body, extending grooves extend from the bottom of the annular sliding groove to two sides, at least two groups of mounting grooves are formed in one side of the annular sliding groove, a compression joint groove is formed in the other side of the annular sliding groove, a compression joint block is mounted in the compression joint groove, the blade mounting block is limited in the mounting groove under the pushing of the compression joint block in a sliding mode, limiting blocks limited in the extending grooves are further arranged on two sides of the blade mounting block, a rotating column block is rotatably connected in the blade mounting block, an outer gear ring is arranged outside the rotating column block, an arc-shaped inner gear ring is fixed in the mounting groove, and the blade body is fixedly mounted; still be equipped with spacing cardboard on the crimping piece, the utility model discloses can make things convenient for quick carry out the blade adjustment, the adjustment is also comparatively convenient for saving time.

Description

Blade-adjustable axial flow fan

Technical Field

The utility model relates to an axial fan, especially an axial fan with adjustable blade.

Background

The axial flow fan has wide application, and is often applied to various places needing cooling and ventilation, while the blade angle of the conventional axial flow fan is generally fixed and can not be adjusted according to requirements, while in the use of the axial flow fan, the speed and the strength of wind power generally depend on the spiral angle of the blade, namely, the smaller the included angle between the spiral angle of the blade and a driving shaft is, the speed of the wind power and the strength of jet flow are correspondingly increased, the diffusion area of the wind power is reduced, and vice versa, especially when the fan is reversed, the wind volume of the fan generally can not reach 40 percent, the working efficiency of the fan during the reversal can be seriously influenced, and because most of the traditional fan blades can not adjust the angle, the wind volume and the wind pressure of the fan can not be adjusted by a client, and the use of the fan is limited;

therefore, there is a need for an axial flow fan with adjustable blades, which can adjust the blades conveniently and rapidly, and the adjustment is time-saving and convenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a blade adjustable axial fan can make things convenient for quick blade adjustment that carries on, and the adjustment is also comparatively convenient for saving time.

The utility model provides a following technical scheme:

an axial flow fan with adjustable blades comprises a fan shell, a motor frame, a driving motor, a blade mounting part, a locking nut and a blade body, wherein the driving motor is mounted on the motor frame; the blade mounting part comprises a cylindrical mounting body and a blade mounting block, wherein the surface of the mounting body is provided with an annular sliding groove which is coaxial with the mounting body, the bottom of the annular sliding groove extends towards two sides to form an extension groove with a T-shaped section with the annular sliding groove, the side wall of one side of the annular sliding groove is also provided with at least two groups of mounting grooves, the other side of the annular sliding groove is also provided with a compression joint groove which is opposite to the mounting groove, a compression joint block is mounted in the compression joint groove, the blade mounting block slides through the annular sliding groove and is limited in the mounting groove under the pushing of the compression joint block, two sides of the blade mounting block are also provided with limiting blocks which are limited in the extension grooves, a rotating column block is rotatably connected in the blade mounting block, an outer gear ring is arranged outside the rotating column block, an arc-shaped inner gear ring which can; still be equipped with spacing cardboard on the crimping piece, lock nut threaded connection is outside this body of installation, and can be by crimping groove to one side motion butt of mounting groove in one side of spacing cardboard.

Preferably, still be fixed with at least a set of spacing group that is located between the mounting groove on the installation body, spacing group includes the fixed block, telescopic link and spring, the telescopic link passes the fixed block, its one end is equipped with spacing fixture block in fixed block one side, another pot head is equipped with the spring of butt at the fixed block opposite side, and the telescopic link still is equipped with the lug that can butt at the spring tip outward, an annular groove mouth that supplies the telescopic link tip to stretch into is still seted up to one side of lock nut, it has at least a set of locating lever still to stretch into in the annular groove mouth.

Preferably, the crimping block comprises a crimping body which is slidably connected in the crimping groove, one side of the crimping body, which is far away from the mounting groove, is crimped with an elastic piece, and one end of the elastic piece is fixed in the crimping groove.

Preferably, one side of the limiting block far away from the blade mounting block is further provided with an inclined plane sliding block, and two sides of the crimping body are further provided with a matching sliding surface in butt fit with the inclined plane sliding block.

Preferably, a groove is formed in one side, facing the arc-shaped inner gear ring, of the blade mounting block, a limiting frame is fixedly arranged in the groove in an erected mode, and the rotating column block is rotatably connected to the outside of the limiting frame.

The utility model has the advantages that: when the angle of the blade body needs to be adjusted, only the telescopic rod needs to be pulled to pull the telescopic rod out of the annular groove, the locking nut can be rotated to be away from the mounting groove to be separated from the limiting state of the crimping block, further, the blade mounting block moves towards the outer side away from the arc-shaped inner gear ring to separate the arc-shaped inner gear ring from the outer gear ring, the rotating column block is rotated at the moment, the rotation of the blade angle can be realized, after the rotation of the blade is finished, the arc-shaped inner gear ring can be meshed with the rotated outer gear ring (fine adjustment of the outer gear ring for matching is allowed at the moment), further, the locking nut is rotated to the position abutted to the crimping block again, the crimping block is prevented from loosening the crimping of the blade mounting block, and the phenomenon that the displacement distance of the locking nut during the rotation of the driving motor is overlarge, and the gap between the, make arc ring gear and outer ring gear break away from, so, can set up at least a set of locating lever at the annular groove mouth, realize spacing to lock nut is rotatory with this, for example, set up a set of locating lever, then lock nut when rotatory 360, then can be stretched into the intraoral telescopic link of ring channel spacing, and lock nut is rotatory 360 degrees, then the distance between lock nut and the spacing cardboard is the distance of a fillet of screw, still can not cause the separation between arc ring gear and the outer ring gear, namely, above-mentioned process then can convenient quick carry out the blade adjustment, the adjustment is also comparatively convenient and time saving.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a structural cross-sectional view of the blade mounting portion;

FIG. 3 is a schematic structural view of the mounting groove and the crimping groove;

FIG. 4 is a schematic view of the structure of the rotary cylinder block;

FIG. 5 is a schematic view of the blade mounting block positioned within the annular chute;

FIG. 6 is a schematic view of a blade body construction;

FIG. 7 is a side schematic view of the lock nut;

notation in the figure: 1 is fan housing, 2 is the motor frame, 3 is driving motor, 4 is the blade installation department, 5 is lock nut, 6 is the blade body, 41 is the installation body, 42 is the blade installation piece, 43 is annular spout, 44 is the extension groove, 45 is the mounting groove, 46 is the crimping groove, 47 is the crimping piece, 48 is the stopper, 49 is the rotation column piece, 410 is outer ring gear, 411 is the arc ring gear, 412 is spacing cardboard, 413 is the fixed block, 414 is the telescopic link, 415 is the spring, 416 is the fixture block, 417 is the lug, 418 is the annular notch, 419 is the locating lever, 420 is the crimping body, 421 is the elastic component, 422 is the inclined plane slider, 423 is the spacing frame.

Detailed Description

With reference to fig. 1 to 7, in this embodiment, the axial flow fan with adjustable blades includes a fan housing 1, a motor frame 2, a driving motor 3, a blade mounting portion 4, a lock nut 5 and a blade body 6, where the driving motor 3 is mounted on the motor frame 2, the motor frame 2 is mounted in the fan housing, one end of the blade mounting portion 4 is drivingly connected to a motor shaft of the driving motor 3, and an external thread that is in threaded fit with the lock nut 5 is further provided thereon; the blade mounting part 4 comprises a cylindrical mounting body 41 and a blade mounting block 42, the surface of the mounting body 41 is provided with an annular sliding groove 43 which is coaxial with the mounting body 41, the bottom of the annular sliding groove 43 extends towards two sides to form an extending groove 44 with a T-shaped section with the annular sliding groove 43, one side wall of the annular sliding groove 43 is further provided with at least two groups of mounting grooves 45, the other side of the annular sliding groove 43 is further provided with a crimping groove 46 which is opposite to the mounting groove 45, a crimping block 47 is mounted in the crimping groove 46, the blade mounting block 42 slides through the annular sliding groove 43 and is limited in the mounting groove 45 under the pushing of the crimping block 47, two sides of the blade mounting block 42 are further provided with a limiting block 48 limited in the extending groove 44, the blade mounting block 42 is connected with a rotary column block 49, an outer gear ring 410 is arranged outside the rotary column block 49, an arc-shaped inner gear ring 411 which, the blade body 6 is fixedly arranged at the top of the rotating column block 49; the crimping block 47 is further provided with a limiting clamping plate 412, the locking nut 5 is connected to the outside of the mounting body 41 in a threaded mode, and can move towards one side of the mounting groove 45 from the crimping groove 46 to abut against one side of the limiting clamping plate 412.

The mounting body 41 is further fixed with at least one group of limiting groups located between the mounting grooves 45, each limiting group comprises a fixing block 413, an expansion link 414 and a spring 415, each expansion link 414 penetrates through the corresponding fixing block 413, one end of each expansion link is provided with a limiting clamping block 416 located on one side of the corresponding fixing block 413, the other end of each expansion link is sleeved with the spring 415 abutting against the other side of the corresponding fixing block 413, a protruding block 417 abutting against the end portion of the spring 415 is further arranged outside each expansion link 414, one side of each locking nut 5 is further provided with an annular notch 418 for the end portion of the corresponding expansion link 414 to extend into, and at least one.

The crimping piece 47 is including the crimping body 420 of sliding connection in crimping groove 46, and the crimping body 420 is kept away from the crimping of one side of mounting groove 45 and is had an elastic component 421, and the one end of elastic component 421 is fixed in crimping groove 46 to through giving crimping body 420 elastic pressure, the crimping is to blade mounting block 42 side, thereby can further improvement whole blade angle stability after fixing.

One side of the limiting block 48 away from the blade mounting block 42 is further provided with an inclined plane sliding block 422, and two sides of the crimping body 420 are further provided with matching sliding surfaces in abutting fit with the inclined plane sliding block 422.

One side of the blade mounting block 42 facing the arc-shaped inner gear ring 411 is provided with a groove, a limiting frame 423 is fixedly arranged in the groove in an erecting mode, and the rotating column block 49 is rotatably connected outside the limiting frame 423.

The utility model discloses a theory of operation is: when the angle of the blade body 6 needs to be adjusted, the telescopic rod 414 is pulled to pull the telescopic rod 414 out of the annular notch 418, the locking nut 5 can be rotated to be away from the mounting groove 45, the telescopic rod is separated from the limit state of the pressure connecting block 47, the blade mounting block 42 is moved towards the outer side away from the arc-shaped inner gear ring 411, the arc-shaped inner gear ring 411 is separated from the outer gear ring 410, the rotating column block 49 is rotated at the moment, the rotation of the blade angle can be realized, after the rotation of the blade is completed, the arc-shaped inner gear ring 411 can be meshed with the rotated outer gear ring 410 (fine adjustment of the outer gear ring 410 for matching is allowed at the moment), the locking nut 5 is rotated to the position abutting against the pressure connecting block 47 again, the pressure connecting block 47 is prevented from loosening the pressure connection of the blade mounting block 42, and the displacement distance of the locking nut 5 is prevented from being too large when the driving, the gap between the pressing block 47 and the inner ring gear 411 is too large, so that the inner ring gear 411 is separated from the outer ring gear 410, and therefore, at least one set of positioning rod 419 can be arranged on the annular groove 418, and the rotation of the locking nut 5 is limited, for example, a set of positioning rod 419 is arranged, so that the locking nut 5 can be limited by the telescopic rod 414 extending into the annular groove 418 when rotating for 360 degrees, and the locking nut 5 rotates for 360 degrees, so that the distance between the locking nut 5 and the limiting clamping plate 412 is the distance of one thread ring, and the separation between the inner ring gear 411 and the outer ring gear 410 cannot be caused, that is, the blade adjustment can be conveniently and rapidly performed in the process, and the adjustment is also time-saving and convenient.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An axial flow fan with adjustable blades is characterized by comprising a fan shell, a motor frame, a driving motor, a blade mounting part, a locking nut and a blade body, wherein the driving motor is mounted on the motor frame;

the blade mounting part comprises a cylindrical mounting body and a blade mounting block, wherein the surface of the mounting body is provided with an annular sliding groove which is coaxial with the mounting body, the bottom of the annular sliding groove extends towards two sides to form an extension groove with a T-shaped section with the annular sliding groove, the side wall of one side of the annular sliding groove is also provided with at least two groups of mounting grooves, the other side of the annular sliding groove is also provided with a compression joint groove which is opposite to the mounting groove, a compression joint block is mounted in the compression joint groove, the blade mounting block slides through the annular sliding groove and is limited in the mounting groove under the pushing of the compression joint block, two sides of the blade mounting block are also provided with limiting blocks which are limited in the extension groove, a rotating column block is rotatably connected in the blade mounting block, an outer gear ring is arranged outside the rotating column block, and an arc-shaped inner gear ring which can be meshed with the outer gear, the blade body is fixedly arranged at the top of the rotating column block; the crimping block is further provided with a limiting clamping plate, the locking nut is in threaded connection with the outside of the mounting body and can move towards one side of the mounting groove from the crimping groove to abut against one side of the limiting clamping plate.

2. The axial flow fan with the adjustable blades as claimed in claim 1, wherein the mounting body is further fixed with at least one set of limiting set located between the mounting grooves, the limiting set includes a fixing block, a telescopic rod and a spring, the telescopic rod penetrates through the fixing block, one end of the telescopic rod is provided with a clamping block limited on one side of the fixing block, the other end of the telescopic rod is sleeved with a spring abutted to the other side of the fixing block, the telescopic rod is further provided with a protruding block abutted to the end of the spring, one side of the locking nut is further provided with an annular groove for the end of the telescopic rod to extend into, and the annular groove is further provided with at least one set of positioning rods.

3. The axial flow fan with adjustable blades as claimed in claim 1, wherein the crimping block includes a crimping body slidably connected in the crimping groove, an elastic member is crimped on a side of the crimping body away from the mounting groove, and one end of the elastic member is fixed in the crimping groove.

4. The axial flow fan with the adjustable blades as claimed in claim 3, wherein an inclined slide block is further disposed on one side of the limiting block away from the blade mounting block, and a matching slide surface in abutting fit with the inclined slide block is further disposed on both sides of the crimping body.

5. The axial flow fan with adjustable blades as claimed in claim 1, wherein a groove is formed in one side of the blade mounting block facing the arc-shaped inner gear ring, a limiting frame is fixedly mounted in the groove, and the rotating column block is rotatably connected to the outside of the limiting frame.