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Blade structure of efficient grading wheel of jet mill

A technology of airflow pulverizer and blade structure, which is applied in the direction of separating solids from solids with airflow, solid separation, grain processing, etc. It can solve the problems of affecting classification efficiency and increasing airflow resistance, so as to improve output and classification accuracy, Effect of reducing eddy current and reducing wind resistance

Inactive Publication Date: 2014-12-24
KUNSHAN MIYOU EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like figure 2 As shown, the traditional blades are straight blades, and the blades are assembled perpendicular to the hub. This blade structure has the following defects: when the classification wheel rotates, the blades will generate local vortices, which will increase the airflow resistance. , which will affect the classification efficiency

Method used

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  • Blade structure of efficient grading wheel of jet mill
  • Blade structure of efficient grading wheel of jet mill
  • Blade structure of efficient grading wheel of jet mill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] Embodiment: A high-efficiency classification wheel blade structure of a jet mill, including a front impeller disc 1, a rear impeller disc 2 and several blades 3, and the blades 3 are fixedly connected between the front and rear impeller discs 1, 2 and form a circle. There are feed gaps between adjacent blades, and the inner side of a circle of blades forms a cavity. Each of the blades 3 is composed of a main blade 31 and at least one auxiliary blade 32, and the auxiliary blade 32 is fixedly connected (such as welding) on ​​the main blade 31 and has an included angle with the main blade.

[0018] Each of the blades is composed of a main blade and an auxiliary blade.

[0019] The main blade 31 is a straight blade.

[0020] The front impeller disk and the rear impeller disk have hubs, and the main blades are oblique to the circumference of the hubs.

[0021] The primary blade size is greater than the secondary blade size.

[0022] The cross-section of the blade 3 formed...

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PUM

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Abstract

The invention discloses a blade structure of an efficient grading wheel of a jet mill. The blade structure of the efficient grading wheel of the jet mill comprises a front impeller plate, a rear impeller plate and a plurality of blades, wherein the blades are fixedly connected between the front impeller plate and the rear impeller plate and form a circle, the adjacent blades are provided with a feeding slit respectively, a cavity is formed inside a circle of the blades, and every impeller blade is composed of a main blade and at least one auxiliary blade which is fixedly connected to the main blade and has an included angle with the main blade. Therefore, the vortex generated by the blades can be effectively reduced, the wind drag can be reduced, and accordingly the yield and grading accuracy are improved.

Description

technical field [0001] The invention relates to a classifying wheel of a jet mill, in particular to a classifying wheel with an improved blade structure. Background technique [0002] When the airflow mill works, the compressed air is sprayed into the crushing chamber through the nozzle at high speed. At the intersection of multiple high-pressure airflows, the material is repeatedly collided, rubbed, and sheared to be crushed. The crushed material is blown by the fan. The bottom moves to the classification area with the upward airflow. Under the strong centrifugal force generated by the high-speed rotating classification wheel, the coarse and fine materials are separated. The fine particles that meet the particle size requirements are discharged through the classification wheel, and the coarse particles descend to the crushing area for further crushing. Among them, when the grading wheel is working, the air powder is under the action of centrifugal force, and the large or he...

Claims

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Application Information

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IPC IPC(8): B07B7/083B02C23/20
Inventor 吴建明袁鑫雷
Owner KUNSHAN MIYOU EQUIP MFG