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鹽城工學(xué)院本科生畢業(yè)設(shè)計(jì)說明書 2007
FXS900組合式選粉機(jī)總體及雙出風(fēng)口分離器設(shè)計(jì)
摘要：選粉機(jī)是圈流粉磨系統(tǒng)的主要設(shè)備之一，通過選粉機(jī)對(duì)粉末粒徑的選擇，能夠很大程度上減少細(xì)粉重新進(jìn)磨，解決對(duì)粗粉粉磨的緩沖作用問題，從而提高粉磨效率，進(jìn)而提高了能源利用率。本課題設(shè)計(jì)的是FXS900組合式選粉機(jī)，它是在旋風(fēng)式選粉機(jī)的基礎(chǔ)上進(jìn)行改進(jìn)而成的一種高效旋粉機(jī)。該設(shè)計(jì)吸收了O-SEPA選粉機(jī)的的先進(jìn)懸浮分散技術(shù)和平面渦流理論，并在選粉機(jī)主體四周設(shè)有旋風(fēng)筒來收集細(xì)粉。設(shè)計(jì)內(nèi)容分為選粉機(jī)總體設(shè)計(jì)和雙出風(fēng)口分離器的設(shè)計(jì)。在進(jìn)行總體設(shè)計(jì)時(shí)，通過風(fēng)量的計(jì)算選擇風(fēng)機(jī)，確定旋粉室直徑與轉(zhuǎn)子直徑，再計(jì)算主軸的轉(zhuǎn)速和選粉機(jī)的功率，選擇電機(jī)和減速機(jī)。雙出風(fēng)口分離器的設(shè)計(jì)是我此次設(shè)計(jì)的重點(diǎn)。雙出風(fēng)口分離器的結(jié)構(gòu)設(shè)計(jì)主要是在單出風(fēng)口分離器的基礎(chǔ)上改進(jìn)而來。傳統(tǒng)的旋風(fēng)分離器存在下述三個(gè)主要缺陷：
a．旋風(fēng)分離器中心凈化氣流是一股較強(qiáng)的旋渦流無用壓力損失占分離器總壓力損失65%以上。
b．在上進(jìn)風(fēng)口與上出風(fēng)口間存在短路流。
c．錐部集料口因氣流轉(zhuǎn)向而導(dǎo)致已沉降微細(xì)粉塵“二次返混”。
通過在筒體內(nèi)增設(shè)可調(diào)節(jié)開度的導(dǎo)流口，改善了旋風(fēng)分離器內(nèi)的流場(chǎng)，使得分離器的捕集細(xì)粉能力有了顯著的提高，為現(xiàn)行組合式選粉機(jī)改造拓展了市場(chǎng)。
關(guān)鍵詞：選粉機(jī)，雙出風(fēng)口分離器，圈流粉磨 ，平面渦流
The Design of FXS900 Combination Separator and Cyclone Collector with Double Outlet for Dust
Abstract: The separator is a major equipment of the circle grinding system. Through the separator’s choice of the size of the power, it reduces the chance that thin power return to the ball mill, solves the problem of buffer action to the thick power grinding, enhances the grinding rate, and improves the energy efficiency. This graduated course is the design of FXS900 combination separator. It is a high efficiency separator, which is based on the cyclone separator. This design absorbed the advanced Suspension Technology Plane Vortex Technology of O-SEPA separator, and also absorbed Cyclones Collecting Technology of cyclone separator .And around the separator, there are a fewer of cyclone collectors which are used to collect the thin power. The contents of this design are overall design of FXS900 combination separator and design of Cyclone Collector with Double Outlet for Dust . In the design of the separator, at first, calculate the air amount choose the air fan ,then confirm the diameters of the dust separator room and rotor. After calculate the rotor speed of main shaft and the power capacity, choose the electromotor and decelerate machine. The cyclone collector’s design is the point of my design. Design of the structural of the cyclone collector with double outlet for dust is based on the traditional cyclone collector. There are three imperfections on the traditional cyclone collector:
a. The airflow in the center of the cyclone collector is a strong swirling flow. The uselessness gas pressure loss is 65% of the total loss.
b. Between the upper air import and outlet ,there is a short-circuit faultc.
c. The air-flow at the outlet of dust steer and bring on the micro dust which has ground settlement mixes again. Increase an adjustable opening degree construction diversion in the barrel part .It improves the stream field and the ability of catching the micro dust. It expands the market for existing Combination Separator.
Key words: separator; cyclones separator with Double Outlet for Dust; circle grinding system; plane eddy