CN214366883U

CN214366883U - Impeller structure capable of adjusting fan blade radius

Info

Publication number: CN214366883U
Application number: CN202120444782.3U
Authority: CN
Inventors: 裘鑫; 袁鹏程; 张职锋
Original assignee: Zhejiang Kemao Industrial Co ltd
Current assignee: Zhejiang Kemao Industrial Co ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-10-08
Anticipated expiration: 2031-03-02

Abstract

The utility model relates to a radial impeller structure of adjustable fan blade, include: an upper hub; a lower hub; the fan blade comprises a blade and a blade handle, the blade is fixedly connected with the blade handle, and a circle of first steps are distributed on the blade handle; the middle part of the sliding block is provided with a mounting hole, a circle of second steps are arranged in the mounting hole, and the directions of the second steps are opposite to those of the second steps; the lower hub and the upper hub are vertically matched, and the sliding block is clamped between the upper hub and the lower hub; the petiole inserts in the mounting hole, first step and second step joint for the petiole is mutually supported with the slider and is fixed between upper and lower wheel hub. The radius of the fan blade can be adjusted by only adjusting the distance that the blade handle extends into the sliding block, and the blade handle and the sliding block are in a zigzag step reverse clamping structure, so that the adjusting step is simplified; the distance between the adjacent first steps is the same as that between the adjacent second steps, so that the corresponding and stability of the clamping connection of the petioles and the sliding blocks are guaranteed.

Description

Impeller structure capable of adjusting fan blade radius

Technical Field

The utility model relates to an axial fan makes the field, especially relates to a radial impeller structure of adjustable fan blade.

Background

Axial fan's usage is extensive, often is applied to all kinds of places that need cool off and ventilate, and the impeller in the current fan, its blade or with wheel hub integrated into one piece, or fixed mounting are to wheel hub, and whatever kind of mode all is once processed the completion, and the blade radius just can not change, therefore the operation requirement of a work condition can only be satisfied to a finished product impeller. The traditional blade is usually a cylindrical blade handle matched with a cylindrical cavity of a hub, so that the fixed angle of the blade handle and the hub can be controlled during installation, and the angle of the blade can be adjusted. However, when the adjustment angle cannot meet the parameter requirements of the customer, the parameter requirements of the customer can only be met by replacing the blades with other radii or even replacing the blades with other blades with completely different structures. This also causes problems of difficulty in replacement and high operation cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can conveniently change radial impeller structure of fan blade to solve prior art fan blade radius and be difficult to the technical problem of adjustment, the utility model provides an adjustable radial impeller structure of fan blade.

The utility model discloses a following technical scheme realizes above-mentioned purpose: an impeller structure capable of adjusting the radius of a fan blade, comprising: an upper hub; a lower hub; the fan blade comprises a blade and a blade handle, the blade is fixedly connected with the blade handle, and a circle of first steps are distributed on the blade handle; the middle part of the sliding block is provided with a mounting hole, a circle of second step is arranged in the mounting hole, and the direction of the second step is opposite to that of the first step; the lower hub and the upper hub are vertically matched, and the sliding block is clamped between the upper hub and the lower hub; the petiole inserts in the mounting hole, first step and second step joint for the petiole is mutually supported with the slider and is fixed between upper and lower wheel hub.

Furthermore, the first steps are uniformly distributed along the axial direction of the blade handle, and the second steps are uniformly distributed along the axial direction of the mounting hole.

Further, the distance between adjacent first steps is the same as the distance between adjacent second steps.

Furthermore, the sliding block comprises an upper sliding block and a lower sliding block, and is of a vertically symmetrical combined structure.

Furthermore, arc-shaped sliding block positioning holes are formed in the upper hub and the lower hub, fixing holes penetrating through the upper sliding block and the lower sliding block from top to bottom are formed in the upper sliding block and the lower sliding block, the sliding block positioning holes in the upper hub and the lower hub are opposite to the upper surface and the lower surface of the sliding block respectively, a screw penetrates through the sliding block positioning holes and the fixing holes in sequence, and the sliding block is fixed with the upper hub and the lower hub through nuts.

Further, last wheel hub all is equipped with the fixed snap ring of round with lower wheel hub, the upper surface of slider and the lower surface of slider all are equipped with the arc recess down, the fixed snap ring of going up wheel hub and lower wheel hub imbeds respectively in the arc recess of slider upper surface and lower slider lower surface.

Furthermore, 2 sections of arc-shaped sliding block positioning holes are formed in the upper hub and the lower hub.

Compared with the prior art, the beneficial effects of the utility model are as follows: (1) the radius of the fan blade can be adjusted only by adjusting the distance that the blade handle extends into the sliding block to enable the first step to be clamped on the second step at different positions, and the operation difficulty is low; (2) the petiole and the sliding block adopt a structure of reversely clamping the sawtooth steps, so that the installation steps are simplified; (3) the distance between the adjacent first steps is the same as that between the adjacent second steps, so that the corresponding and stability of the clamping connection of the petioles and the sliding blocks are guaranteed.

Drawings

FIG. 1 is a perspective view of an impeller with 2 blades installed with an upper hub removed;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of a leaf of the wind turbine of FIG. 1;

FIG. 4 is a schematic view of the slider of FIG. 1;

FIG. 5 is a schematic view of the lower slider of FIG. 4;

the reference numerals are explained below:

1. the blade, 2, the petiole, 21, first step, 3, the slider, 4, fixed snap ring, 5, first locating piece, 6, the slider locating hole, 7, the pivot, 8, the reference column, 9, the fixed orifices, 10, the mounting hole, 51, recess, 12, base, 31, the arch, 32, arc recess, 33, the second step.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

an impeller structure capable of adjusting the radius of a fan blade is shown in figures 1-5 and comprises the fan blade, a sliding block 3, an upper hub and a lower hub. The fan blade comprises a blade 1 and a blade handle 2, and the blade 1 is fixedly connected with the blade handle 2. The middle part of the sliding block 3 is provided with a mounting hole 10, and the blade handle is inserted into the mounting hole to fixedly connect the sliding block 3 with the fan blade 1. Specifically, a circle of first steps 21 are distributed on the blade handle 2, a circle of second steps 33 are arranged in the mounting hole, and the direction of the second steps is opposite to that of the first steps. In order to adjust the radius of the blade, the first steps are uniformly distributed along the axial direction of the blade handle, the second steps are uniformly distributed along the axial direction of the mounting hole, and the distance between every two adjacent first steps is the same as that between every two adjacent second steps. The lower hub and the upper hub are vertically matched, and the sliding block is clamped between the upper hub and the lower hub; the petiole inserts in the mounting hole, first step and second step joint for the petiole is mutually supported with the slider and is fixed between upper and lower wheel hub.

The upper hub comprises a base 12, a downward circular first positioning block is arranged on the base 12 and located in the middle of the base 12, a fixing clamping ring 4 is arranged on the periphery of the base 12, the fixing clamping ring 4 is located between the outer edge of the base 12 and the first positioning block, 2 sections of sliding block positioning holes 6 are formed in the base 12, and the sliding block positioning holes 6 are located between the fixing clamping ring 4 and the first positioning block. The first locating block is internally provided with 6 evenly distributed locating columns which are communicated with the upper hub base 12. The inside of the second positioning block is also provided with 6 positioning columns which are uniformly distributed, but are not communicated with the lower hub base 12.

The lower hub and the upper hub are arranged in an up-and-down symmetrical mode, and an upward circular second positioning block is arranged in the lower hub.

Furthermore, the lower hub further comprises a rotating shaft positioned in the center of the base 12, and the rotating shaft penetrates through the center of the upper hub to connect the fan blades with the motor.

The inner side of the sliding block is arc-shaped and matched with the first positioning block and the second positioning block, and the sliding block comprises an upper sliding block and a lower sliding block and is of a vertically symmetrical combined structure. The upper surface of the upper sliding block and the lower surface of the lower sliding block are respectively provided with an arc-shaped groove 32, and the fixed snap rings 4 of the upper hub and the lower hub are respectively embedded into the arc-shaped grooves 32 of the upper surface of the upper sliding block and the lower surface of the lower sliding block.

Grooves are distributed on the first positioning block, and the grooves on the second positioning block and the grooves on the first positioning block are arranged in an up-and-down corresponding mode. The inner surfaces of the upper sliding block and the lower sliding block are provided with protrusions 31, and the protrusions 31 of each sliding block are connected with the grooves in a matched mode.

During installation, the petiole 2 is stretched into the lower sliding block installation hole 10, so that the first step 21 and the second step 33 are clamped, and the upper sliding block and the lower sliding block are buckled together. The protrusion 31 on the sliding block is inserted into the corresponding groove, so that the upper sliding block is fixedly connected with the first positioning block, and the lower sliding block is fixedly connected with the second positioning block. Go up in wheel hub's fixed snap ring 4 card go up the slider upper surface arc recess 32 in, lower wheel hub's fixed snap ring 4 card goes into lower slider lower surface arc recess 32 in, fixes. The bolts penetrate through the upper hub base 12 and penetrate through the positioning columns of the upper hub and the lower hub to fixedly connect the upper hub and the lower hub. In addition, the slider positioning holes 6 on the upper hub and the lower hub are respectively opposite to the upper surface and the lower surface of the slider, the slider is provided with a through fixing hole 9 from top to bottom, a screw rod is adopted to sequentially penetrate through the slider positioning holes 6 and the fixing hole 9, and the slider and the upper hub and the lower hub are further fixed by nuts. The radius of the fan blade can be conveniently adjusted by changing the position of the first step of the blade handle clamped into the slider mounting hole during the radius adjustment.

On the basis of a traditional mechanism, the radius of the fan blade can be adjusted only by adjusting the distance that the blade handle extends into the sliding block to enable the first step to be clamped on the second steps at different positions, the operation difficulty is low, the blade handle and the sliding block are in a zigzag step reverse clamping structure, and the installation steps are simplified; the distance between the adjacent first steps is the same as that between the adjacent second steps, and the corresponding and stability of the clamping connection of the petioles and the sliding blocks are also guaranteed. In addition, the sliding blocks with different numbers are arranged between the upper hub and the lower hub, and the grooves on the positioning blocks are designed in advance, so that the sliding blocks can be simply and conveniently inserted into the corresponding grooves as required during adjustment, and the number of the fan blades can be flexibly adjusted. Especially in the test process, the number of the installed fan blades can be flexibly controlled, test data of important parameters such as air volume, energy efficiency and the like are obtained under the actual condition, and performance requirements of customers are selected in the later period.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides an impeller structure of adjustable fan blade radius which characterized in that includes:

an upper hub;

a lower hub;

the fan blade comprises a blade and a blade handle, the blade is fixedly connected with the blade handle, and a circle of first steps are distributed on the blade handle;

the middle part of the sliding block is provided with a mounting hole, a circle of second step is arranged in the mounting hole, and the direction of the second step is opposite to that of the first step;

the lower hub and the upper hub are vertically matched, and the sliding block is clamped between the upper hub and the lower hub;

the petiole inserts in the mounting hole, first step and second step joint make petiole and slider mutually support to be fixed between upper and lower wheel hub.

2. The impeller structure capable of adjusting the radius of the fan blade as claimed in claim 1, wherein the first steps are uniformly distributed along the axial direction of the blade shank, and the second steps are uniformly distributed along the axial direction of the mounting hole.

3. The impeller structure capable of adjusting the radius of the fan blade as claimed in claim 2, wherein the distance between adjacent first steps is the same as the distance between adjacent second steps.

4. The impeller structure capable of adjusting the radius of the fan blades as claimed in claim 1, wherein the sliding block comprises an upper sliding block and a lower sliding block, and is a vertically symmetrical combined structure.

5. The impeller structure of claim 4, wherein the upper hub and the lower hub are provided with arc-shaped slider positioning holes, the upper slider and the lower slider are provided with fixing holes penetrating from top to bottom, the slider positioning holes on the upper hub and the lower hub are respectively opposite to the upper surface and the lower surface of the slider, a screw is sequentially inserted into the slider positioning holes and the fixing holes, and the slider is fixed with the upper hub and the lower hub by nuts.

6. The impeller structure capable of adjusting the radius of the fan blade as claimed in claim 4, wherein the upper hub and the lower hub are both provided with a ring of fixing snap rings, the upper surface of the upper slider and the lower surface of the lower slider are both provided with arc-shaped grooves, and the fixing snap rings of the upper hub and the lower hub are respectively embedded into the arc-shaped grooves of the upper surface of the upper slider and the lower surface of the lower slider.

7. The impeller structure capable of adjusting the radius of the fan blade as claimed in claim 5, wherein the upper hub and the lower hub are provided with 2-segment arc-shaped slider positioning holes.