Coarse slime sorting pulsating water flow realization device and realization method

Abstract

The invention relates to a sorting machine in the coal washing and sorting industry, in particular to a coarse slime sorting pulse water flow achieving device and method. The coarse slime sorting pulse water flow achieving device comprises a shell, a single-cone hopper, a vibration device, a bin, a flow stabilizing plate, a screen body, a supporting frame, a servo drive device and a discharging port. The vibration device is arranged on the single-cone hopper, the bin is arranged below the flow stabilizing plate, and the screen body is arranged above the flow stabilizing plate. The bin is provided with a bin upper cover. The bin upper cover is provided with a connecting pipe, and the connecting pipe penetrates the flow stabilizing plate and the screen body. The screen body is provided witha feeding port, and the lower portion of the feeding port is connected with the screen body through a water inlet pipe. The servo drive device is connected with an air cylinder, the screen body is provided with an overflow port, and the upper end of the overflow port is provided with an overflow adjusting device. The coarse slime sorting pulse water flow achieving device and method have the beneficial effects that unsmooth stacked object discharging is eliminated, repairing is convenient, and the production efficiency is high.

Description

technical field [0001] The invention relates to a sorting machine in the coal washing industry, in particular to a device and method for realizing pulsating water flow for sorting coarse coal slime. Background technique [0002] With the development of modern coal mining technology and the continuous improvement of the degree of mechanization, the content of fine-grained coal (primary coal slime) in raw coal inevitably shows an increasing trend. The slime content in the coal is increased, and the particle size grades that need to be classified and sorted in the coal preparation process increase. For materials with a particle size of 1-0.3mm, coal slime disturbed bed separator (Teetered Bed Seprator, referred to as TBS) sorting process, coal slime spiral separator sorting process, Coarse slime separation process such as dense medium cyclone slime separation process, and the technology is relatively mature. However, there is a common problem: because the above-mentioned coar...

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Problems solved by technology

However, there is a common problem: because the above-mentioned coarse coal slime separation process has a certain lower limit of particle size, the high-ash fine mud at the lower limit of the separation particle size inevitably enters the overflow slurry, resulting in coarse coal slime separation. The ash content of the overflow slurry after selection is relatively high, so it cannot be directly used as the final clean coal product after dehydration

At present, most of the overflow slurry desliming technologies for coarse coal slime separation in China use vibrating arc screens, high-frequency linear vibrating screens, high-frequency circular vibrating screens and other equipment. These process equipment generally have poor desliming effects. Low efficiency, large maintenance, high power consumption, frequent material blockages during production, unstable ash content of clean coal, sometimes high ash content of coarse and clean coal products, and large equipment footprint; these problems directly Affect the economic benefit of coal preparation plant

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