Ultrasonic screening structure as well as on-line granularity analysis device formed by same and analysis method

Abstract

The invention discloses an ultrasonic screening structure. The ultrasonic screening structure comprises an undersize powder collecting mechanism, a connecting seat (3) and the like, wherein the connecting seat (3) is arranged above the undersize powder collecting mechanism and provided with a containing cavity. The invention also discloses an on-line granularity analysis device formed by the ultrasonic screening structure. The invention further discloses an analysis method of the online granularity analysis device which is formed by the ultrasonic screening structure; and the method comprisesthe following steps of (1) sampling; and (2) carry out sample powder hopper scale tare detection. The ultrasonic screening structure adopts a frame type vibrating screen without a vibrating ring, andan upper sealing ring and a lower sealing ring are installed so as to ensure the sealing performance in the screening process; and meanwhile, a positioning sleeve is further arranged between the connecting seat and the undersize powder collecting mechanism, the vibrating screen is not compacted while the upper sealing ring and the lower sealing ring are properly pressed, it is ensured that the vibrating screen has the good vibration performance, and the problem that a traditional vibrating ring type vibrating screen is short in the service life is well solved.

Description

technical field [0001] The invention belongs to the field of automatic detection, and specifically refers to an ultrasonic screening structure and an online particle size analysis device and analysis method thereof. Background technique [0002] In the aluminum electrolysis industry, in the production process of the prebaked electrolytic cell, the carbon anode is the main part of the aluminum electrolytic cell. Its quality and working conditions affect the normality of the aluminum electrolytic production and the economic and technical indicators such as current efficiency, electric energy consumption, carbon consumption, and product grade. Very huge. 70% of electrolytic cell failures occur at the anode, and the anode faults that often occur in the electrolytic cell include: local overheating of the anode, uneven current distribution, anode drop, anode "long package", anode crack fault, prebaked anode block falling off, a large number of There are more than ten kinds of fai...

AI Technical Summary

Problems solved by technology

At present, most carbon anode manufacturers do not have on-line analysis devices, and adopt off-line sieving analysis. The data cannot be entered into the automatic batching control system in time, which makes it impossible to adjust the mixing ratio of mill parameters in time, resulting in the increase of the porosity of carbon anodes. , the resistivity increases, resulting in a decline in the quality of the carbon anode, manifested as a decrease in the current efficiency of the electrolytic cell, an increase in the unit consumption of direct current and carbon anode, difficulties in electrolytic operation, and a decrease in aluminum grade, which may even lead to shutdown

In addition, the traditional off-line screening device has a short screen life and cannot meet production needs

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