1、 Introduction:

The closed circuit high-speed impact crusher in this unit is composed of the main unit, grading part, separation part, dust collector, etc; The process is simple, easy to operate, low in energy consumption, high in output, compact in structure, and covers a small area. The average particle size of the product ranges from 10 to 1000 μ M range, the particle size distribution of crushed products is narrow, and the particle size spheroidization degree is high. Due to the use of high air flow to transport materials, the heat transfer effect is good, which can effectively reduce the temperature rise in the machine chamber and has strong adaptability to heat sensitive materials. Widely used in the crushing of materials such as pharmaceuticals, chemicals, pesticides, food, coatings, synthetic resins, powder metallurgy, bioengineering, and polymer materials. And inert gas can be used as a circulating gas for special crushing processing.

2、 Working principle:

The material enters the crushing chamber through a screw feeder or vacuum conveyor, and is crushed by impact shear and high-frequency vibration of the airflow between the high-speed rotating rotor and the stator with toothed liner. Then, driven by the airflow and guided by the guide circle, the fine powder enters the central grading area for sorting. As a finished product, it is discharged from the crushing chamber through the grading turbine along with the airflow and separated by the separation device. The ultrafine dust is collected by the dust collector, and the purified air is discharged by the fan. Under the action of gravity and centrifugal force, the coarse powder falls back into the crushing zone and is crushed again.

3、 Features:

1. The combination of high-speed impact crusher and turbine ultrafine classifier has the function of pre grading and inspection grading, and the adjustment of product fineness is convenient, which can avoid the phenomenon of over crushing. The qualified fine powder in the raw material is directly discharged after classification, which helps to improve crushing efficiency, reduce equipment load, and reduce energy consumption.

2. By optimizing the configuration of different types of rotor bodies and stator bushings, a certain impact speed and energy can be obtained to adapt to the crushing of different materials.

3. The average fineness of the product (d50) ranges from 10 to 1000 μ M range, and the particle size distribution of crushed products is narrow, and the particle size is spherical.

4. Due to the use of high air flow to transport materials, the heat transfer effect is good, which can effectively reduce the temperature rise in the machine chamber. Additionally, a water cooling device can be added, making it suitable for crushing weak heat substances (with low softening points) such as coatings, food, pharmaceuticals, synthetic resins, etc.

case diagram