Fluctuating wind generating device

Abstract

A fluctuating wind generating device comprises an air compressor, a PLC (Programmable Logic Controller) solid relay, a high pressure airflow output pipeline, a high pressure airbag, a pressure release valve, an electromagnetic reversing valve, a high pressure cylinder I, a high pressure cylinder II, an air valve I, an air valve II and a low pressure air chamber, wherein three-way joints are connected with the high pressure cylinders; the inlets of the three-way joints are respectively connected with the outlet of the electromagnetic reversing valve; the inlet of the electromagnetic reversing valve is connected with the high pressure airbag; the bottom of the high pressure airbag is connected with the compressor through the high pressure airflow output pipeline; the electromagnetic reversing valve is connected with the PLC solid relay through a signal wire; the air valves (I and II) are arranged in the low pressure air chamber; and the air valve II is connected with the high pressure cylinder II. The high pressure cylinder moves in a reciprocating way through the pressure of high pressure airflow, so that the fluctuating wind which is periodically changed in a fluctuating way is generated by the airflow according to set requirements. The fluctuating wind generating device provided by the invention has the advantages of simple structure, accurate and convenient fluctuating wind period adjustment, high switching speed and low noise.

Description

technical field [0001] The invention relates to equipment used in the mine industry, in particular to a pulsating wind generating device for a vibrating screw dry separator for ore dressing. Background technique [0002] The air valve is the most critical component in the dry coal preparation equipment in the mining industry. It is a device that controls the airflow alternately entering and exiting the coal preparation equipment. The structural diameter of the air valve affects the vibration characteristics of the fluid in the coal preparation equipment. At present, the air valves mainly include rotary air valves, pneumatic air valves, electric control air valves, etc. Since the research and development of the vibrating screw dry separator, in the previous experimental research process, it was found that the continuous air supply is conducive to the exchange and stratification of materials in the vertical direction according to the density, but at the same time greatly r...

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Problems solved by technology

Since the research and development of the vibrating screw dry separator, in the previous experimental research process, it was found that the continuous air supply is conducive to the exchange and stratification of materials in the vertical direction according to the density, but at the same time greatly reduces the zoning effect of the spiral radial direction ; When sorting under no wind conditions, the material on the bed surface can obtain a better radial force provided by the exciting force, so as to achieve a better zoning effect, but without the support of a good delamination effect, it will inevitably not Get good sorting results; intermittent air supply can solve this contradiction very well, so as to achieve the ideal layering and zoning effect

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