CN210449865U

CN210449865U - Centrifugal impeller for air classifier

Info

Publication number: CN210449865U
Application number: CN201921320742.7U
Authority: CN
Inventors: 陈加学; 王高峰; 张蕾
Original assignee: Shandong Jingxin Powder Equipment Technology Co Ltd
Current assignee: Shandong Jingxin Powder Equipment Technology Co Ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-05-05
Anticipated expiration: 2029-08-13

Abstract

The utility model relates to a material classification equipment technical field, specifically speaking relates to an air classifier is with centrifugal impeller. The impeller comprises an impeller lower disc, a circular-ring-shaped impeller upper disc, an impeller sleeve fixedly assembled at the central part of the impeller lower disc and a plurality of impeller blades which are assembled between the impeller lower disc and the circular-ring-shaped impeller upper disc and are uniformly distributed along the circumferential directions of the impeller lower disc and the circular-ring-shaped impeller upper disc; the included angle a between the impeller blades and the radial direction of the lower disk of the impeller is 20-30 degrees. The utility model discloses a change the contained angle number of degrees between the radial of impeller blade and impeller lower wall, increased the entering resistance between the adjacent two impeller blades, reduced the through rate, effectively avoided the entering of large granule, improved hierarchical precision, reduced the energy consumption.

Description

Centrifugal impeller for air classifier

Technical Field

The utility model relates to a material classification equipment technical field, specifically speaking relates to an air classifier is with centrifugal impeller.

Background

The air classifier is a material classification device, materials move to a classification area from a feeding port at the lower end of the classifier along with ascending air flow at a high speed under the action of suction force of a fan, under the action of strong centrifugal force generated by a centrifugal impeller rotating at a high speed, coarse and fine materials are separated, fine particles meeting the particle size requirement enter the upper end of the classification through a gap between two adjacent impeller sheets and then enter a cyclone separator or a dust remover to be collected, and the coarse particles fall to a discharge port to be discharged.

The impeller blades of the centrifugal impeller adopted by the existing airflow classifier are all arranged along the radial direction of the lower disk of the impeller, so that the resistance is small, the particle passing rate is high, and the classification precision and the fine powder extraction rate are low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air current is centrifugal impeller for grader solves above technical problem.

In order to solve the above problems, the utility model adopts the following technical scheme:

a centrifugal impeller for an airflow classifier comprises an impeller lower disc, a circular impeller upper disc, an impeller sleeve fixedly assembled at the central part of the impeller lower disc and a plurality of impeller blades which are assembled between the impeller lower disc and the circular impeller upper disc and are uniformly distributed along the circumferential directions of the impeller lower disc and the circular impeller upper disc; the included angle a between the impeller blades and the radial direction of the lower disk of the impeller is 20-30 degrees.

Preferably: the included angle a between the impeller blades and the radial direction of the lower impeller disc is 30 degrees.

Has the advantages that: compared with the prior art, the utility model discloses a change the contained angle number of degrees between the radial of impeller blade and impeller lower wall, increased the entering resistance between the adjacent two impeller blades, reduced the percent of pass, effectively avoided the entering of big granule, improved hierarchical precision, reduced the energy consumption.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic cross-sectional view of a-a in fig. 1.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Examples

Referring to fig. 1-2, the centrifugal impeller for an air classifier according to this embodiment includes an impeller lower disk 1, a circular impeller upper disk 2, an impeller sleeve 3 fixedly mounted at a central portion of the impeller lower disk 1, and a plurality of impeller blades 4 mounted between the impeller lower disk 1 and the circular impeller upper disk 2 and uniformly distributed along circumferential directions of the impeller lower disk 1 and the circular impeller upper disk 2. The included angle a between the impeller blades 4 and the radial direction of the impeller lower disc 1 is 30 degrees.

As other embodiments of the present invention, the included angle a between the impeller blades 4 and the impeller bottom wall 1 in the radial direction can also be adjusted according to the required classification precision, the smaller the a, the higher the classification precision, and vice versa, the larger a, the lower the classification precision.

The utility model discloses a change the contained angle number of degrees between the radial of impeller blade and impeller lower wall, increased the entering resistance between the adjacent two impeller blades, reduced the through rate, effectively avoided the entering of large granule, improved hierarchical precision, reduced the energy consumption.

The above is only the embodiment of the present invention, not so limit on the other hand through the patent scope of the present invention, all utilize the equivalent structure made in the specification and the attached drawings, directly or indirectly apply to other related technical fields, all with the same principle within the patent protection scope of the present invention.

Claims

1. A centrifugal impeller for an airflow classifier comprises an impeller lower disc (1), a circular impeller upper disc (2), an impeller sleeve (3) fixedly assembled at the central part of the impeller lower disc (1) and a plurality of impeller blades (4) assembled between the impeller lower disc (1) and the circular impeller upper disc (2) and uniformly distributed along the circumferential directions of the impeller lower disc (1) and the circular impeller upper disc (2); the method is characterized in that: the included angle a between the impeller blades (4) and the radial direction of the impeller lower disc (1) is 20-30 degrees.

2. The centrifugal impeller for air classifier according to claim 1, wherein: the included angle a between the impeller blades (4) and the radial direction of the impeller lower disc (1) is 30 degrees.