CN211009281U

CN211009281U - Adjustable blade diffusion device of air blower

Info

Publication number: CN211009281U
Application number: CN201921844458.XU
Authority: CN
Inventors: 丁晗飞; 赵年
Original assignee: B-TOHIN MACHINE (JIANGSU) CO LTD
Current assignee: B-TOHIN MACHINE (JIANGSU) CO LTD
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-07-14
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses an adjustable blade diffusion device of air-blower, including backplate, the blisk of setting on the backplate, fix the blade on the blisk through the pin and be used for driving the rotatory connecting rod system of blisk, the connecting rod system includes and installs the rotating ring on the backplate through the bearing, is used for driving the transfer line of rotating ring, drives and drives the rotatory crank link group of blisk simultaneously through the rotating ring, and this transfer line is connected with the rotating ring, the crank link group including hug closely the driven lever of rotating ring and with the connecting rod that the blade is connected. The utility model discloses a connecting rod system that crank linkage, rotating ring and bladed disk are constituteed makes the blade rotatory, and then the change of import angle of installation in order to adapt to the operating mode through adjusting the blade.

Description

Adjustable blade diffusion device of air blower

Technical Field

The utility model belongs to the technical field of automation equipment, concretely relates to adjustable blade diffusion device of air-blower.

Background

At present, centrifugal blowers are applied more and more in the sewage treatment industry because the centrifugal blowers have the characteristic of high efficiency and energy conservation compared with the traditional blowers. It is generally desirable to have a blower that has a high efficiency near the design operating point and a wide operating range. However, centrifugal blowers have inherent performance characteristics at a constant rotational speed.

The centrifugal blower can increase the pressure of the gas, and the pressure increase is generally achieved by two ways:

1. in the impeller section, the impeller rotating at high speed works on gas, so that the pressure is improved;

2. in the diffuser section, partial kinetic energy of the gas is converted into pressure energy, and the gas pressure is further increased. Therefore, the diffuser section has a significant impact on the performance of the overall unit.

Centrifugal blower diffusers are classified into vaneless diffusers and vaned diffusers. The working principle is that the kinetic energy is converted into pressure energy by utilizing the difference of the cross-sectional areas of the through-flow. The vaneless diffuser has simple structure, good variable working condition performance and higher flow loss; the traditional invariable vaned diffuser is efficient at the design operating point, but under the variable operating condition, the airflow angle is greatly changed at the diffuser vane inlet, the loss is increased, and surging is easily caused, and the adjustable vane diffuser can adjust the inlet installation angle of the vane to adapt to the change of the operating condition.

SUMMERY OF THE UTILITY MODEL

The purpose of the invention is as follows: the utility model aims to solve present under the variable operating mode condition, the air flow angle takes place great change at the diffuser blade entry, and the loss increase, and easily arouses the problem of surge.

The technical scheme is as follows: in order to solve the above problem, the utility model adopts the following technical scheme:

the utility model provides an adjustable blade diffusion device of air-blower, includes backplate, a plurality of leaf discs of setting on the backplate, fixes the blade on the leaf disc through the pin and is used for driving the rotatory connecting rod system of leaf disc, the connecting rod system includes and installs rotating ring, the transfer line that is used for driving the rotating ring on the backplate through the bearing, drives and drives the rotatory crank link group of leaf disc simultaneously through the rotating ring.

Furthermore, one end of the transmission rod is connected with the movable ring, and the other end of the transmission rod is connected with a power end capable of doing reciprocating motion.

Only under the premise of reciprocating motion, the movable ring does reciprocating motion, and the blade disc can be driven to rotate.

Further, the crank connecting rod group including hug closely the driven lever of rotating ring and with the connecting rod that the acanthus leaf is connected, the one end of driven lever can rotate on the plane around the first vertical dead axle of rotating ring, and the other end of driven lever and the one end activity of connecting rod are riveted for connecting rod and driven lever can turn over in same plane, the other end of connecting rod and the vertical dead axle swing joint of second on the acanthus leaf for the connecting rod can rotate in same plane around the vertical dead axle of second.

The connecting structure of the crank connecting rod group is concretely provided.

Further, the end of the connecting rod of the crank connecting rod group is arranged at a non-central position of the blade disc, and the blade disc penetrates through the back plate and can rotate on the back plate.

Only the non-central position that is located the bladed disk just can drive the bladed disk and rotate, if at central position, just need increase with central position fixed connection's the connecting rod in the horizontal plane, then drive the connecting rod through the connecting rod that makes circular motion, further drive the bladed disk and rotate.

Further, the rotating shaft of the rotating ring penetrates through the central hole of the back plate and can rotate on the back plate through a bearing in the back plate.

Further, the blade disc is arranged in the step hole on one side of the back plate and is positioned on the other side of the back plate through the clamping ring, so that the blade disc can rotate in the step hole in a centering mode.

Particularly provides a connecting structure for the rotation of the blade disc on the back plate.

Has the advantages that: compared with the prior art, the utility model:

the utility model discloses a connecting rod system that crank linkage, rotating ring and bladed disk are constituteed makes the blade rotatory, and then the change of import angle of installation in order to adapt to the operating mode through adjusting the blade.

Drawings

FIG. 1 is a front schematic view of the present invention;

fig. 2 is a schematic structural view of the back of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Example 1

As shown in fig. 1 and 2, an adjustable vane diffuser of a blower includes a back plate 1, a plurality of vane disks 2 disposed on the back plate 1, vanes 3 fixed on the vane disks 2 by pins, and a link system for driving the vane disks 2 to rotate, where the link system includes a rotating ring 4 mounted on the back plate 1 through a bearing, a driving rod 5 for driving the rotating ring, and a crank link group driven by the rotating ring 4 and driving the vane disks 2 to rotate at the same time.

The blades 3 are fixed on the blade disc 2 through pins and can rotate in a centering way, the utility model discloses a total 11 blades 3, along axial distribution, there are 11 groups of crank connecting rods correspondingly.

One end of the transmission rod 5 is connected with the movable ring 4, and the other end is connected with a power end (not shown) capable of reciprocating.

The crank connecting rod group comprises a driven rod 6 tightly attached to the moving ring and a connecting rod 7 connected with the leaf disc, one end of the driven rod 6 can rotate on the plane around a first vertical fixed shaft of the moving ring 4, the other end of the driven rod 6 is movably riveted with one end of the connecting rod 7, the connecting rod 7 and the driven rod 6 can turn in the same plane, the other end of the connecting rod 7 is movably connected with a second vertical fixed shaft 8 on the leaf disc 2, and the connecting rod 7 can rotate in the same plane around the second vertical fixed shaft 8.

The end of the connecting rod 7 of the crank connecting rod group is arranged at the non-central position of the blade disc 2, and the blade disc 2 penetrates through the back plate 1 and can rotate on the back plate 1.

Specifically, set up in the non-central point of bladed disk for the vertical dead axle of second promptly, only lie in the non-central point of bladed disk and put, just can drive the bladed disk and rotate, if put at central point, just need increase with central point fixed connection's connecting rod in the horizontal plane, then drive the connecting rod through the connecting rod that makes circular motion, further drive the bladed disk and rotate.

The rotating shaft of the rotating ring 4 passes through the central hole of the back plate 1 and can rotate on the back plate 1 through a bearing in the back plate 1.

The blade disc 2 is arranged in a step hole on one side of the back plate 1 and is positioned on the other side of the back plate 1 through a clamping ring, so that the blade disc 2 can rotate in the step hole in a centering mode.

The clearance between the blade 3 and the two side walls is 0.3-0.5 mm.

Example 2

When the blades 3 have the requirement on the adjustment precision, an electric rocker actuator can be additionally arranged at the free end of the transmission rod 5, the actuator can be numerically controlled and output to the transmission rod 5 to rotate by an angle, and the blades can be accurately and flexibly moved through the two crank connecting rod groups.

Claims

1. The utility model provides an adjustable blade diffusion device of air-blower which characterized in that: including backplate, a plurality of leaf discs of setting on the backplate, fix the blade on the leaf disc through the pin and be used for driving the rotatory connecting rod system of leaf disc, the connecting rod system includes the rotating ring of installing on the backplate through the bearing, is used for driving the transfer line of rotating ring, drives and drives the rotatory crank link group of leaf disc simultaneously through the rotating ring.

2. The blower adjustable vane diffuser of claim 1, wherein: one end of the transmission rod is connected with the movable ring, and the other end of the transmission rod is connected with a power end capable of doing reciprocating motion.

3. The blower adjustable vane diffuser of claim 1, wherein: the crank connecting rod group comprises a driven rod tightly attached to the moving ring and a connecting rod connected with the leaf disc, one end of the driven rod can rotate on the plane around a first vertical fixed shaft of the moving ring, the other end of the driven rod is movably riveted with one end of the connecting rod, so that the connecting rod and the driven rod can turn in the same plane, the other end of the connecting rod is movably connected with a second vertical fixed shaft on the leaf disc, and the connecting rod can rotate in the same plane around the second vertical fixed shaft.

4. The blower adjustable vane diffuser of claim 1, wherein: the end part of the connecting rod of the crank connecting rod group is arranged at the non-central position of the blade disc, and the blade disc penetrates through the back plate and can rotate on the back plate.

5. The blower adjustable vane diffuser of claim 1, wherein: the rotating shaft of the rotating ring penetrates through the center hole of the back plate and can rotate on the back plate through a bearing in the back plate.

6. The blower adjustable vane diffuser of claim 1, wherein: the leaf disc is arranged in a step hole on one side of the back plate and is positioned on the other side of the back plate through a clamping ring, so that the leaf disc can rotate in the step hole in a centering manner.