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The Test About The Property Of Solid Flow Field In The Crushing Chamber Of The Grinder

Posted on:2016-08-14Degree:MasterType:Thesis
Country:ChinaCandidate:L HeFull Text:PDF
GTID:2283330452971304Subject:Mechanical engineering
Abstract/Summary:PDF Full Text Request
Feed processing equipment is one of the major feed mill, due to the hammer millhas good versatility, the structure is simple, cheap, adaptable, reliable, and otheradvantages, can be widely applied. Due to the existence of material crushing chambercirculation layer, causing the material to heat up large, high energy consumption andmaterial over crushed many other issues. In order to make the traditional hammer millsolved the problems, the new hammer mill feed using Unlike conventional crushingand separation mode, the ring gear plate mounted on the interior wall of the crushingby tooth friction plate and hammer and struck to the crushed material and separationdevice in the home to separate materials. In the mill grinding chamber, good structureand characteristics of multiphase flow field is pulverized material is reasonablysmooth delivery and a necessary condition for recovery, the impact of the materialgrinding mill, an important factor in the separation and power, therefore, the newhammer Study sheet mill grinding room multiphase flow field characteristics are thekey research management pulverizer, screening mechanism and to optimize the designof the machine.This article from the three aspects of the crushing chamber pressure distribution inthe flow field were studied:(1) based on virtual instrument technology, design a test system on mill crushingchamber pressure measurement, including equipment selection, measuring pointdistribution, sensor mounting, the sensor signal leads, sensor calibration, the spindlespeed calibration and data acquisition, smash test and measurement chamber,recording the raw measurement data.(2) use LABVIEW powerful data acquisition and signal analysis tools to thepressure signal as digital signal processing. For collecting the signal characteristics(desired signal is low frequency), design an integrated virtual digital filter to give auseful component of the original signal, and record the data, the results of datacollation and make a comparative analysis.(3) The measurement data points graphically, with6describe graphically parallelto a cross-sectional size and distribution of expression of the strength of the pressurespace of the grinding chamber. Given the limited data points measured, this articlewill use the genetic algorithm and BP neural network method of speculation and addunknown data points, according to a sufficient number of data points described insection depict the pressure intensity map, the analysis concluded.
Keywords/Search Tags:test, the crushing chamber, gas-solid flow, virtual instrument, pressuredistribution, genetic neural network
PDF Full Text Request
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