礦山機(jī)械重選設(shè)備重介質(zhì)分流程動(dòng)態(tài)原理圖
重介質(zhì)分選機(jī)是根據(jù)阿基米得原理,將被分選原煤在一定密度的懸浮液中按密度差異進(jìn)行分層和分離的設(shè)備。其工藝過(guò)程:
經(jīng)預(yù)先篩分后的原煤(一般大于13mm或6mm)進(jìn)入充滿重介懸浮液槽體中進(jìn)行分選。懸浮液的密度自動(dòng)調(diào)節(jié)。密度小于懸浮液的物料浮至液面,在水平流的作用下,隨排料口的溢流排出,從而得到兩種不同密度的產(chǎn)品。所不同的是,刮板分選機(jī)利用上升流,而立軸和輪軸分選機(jī)則是利用下降流來(lái)維持懸浮液的穩(wěn)定。
The raw coal(usually greater than 13 mm or 6 mm) after pre-screening enters the filled heavy dielectric suspension body for sorting. The density of suspension is adjusted automatically. The material with a density less than that of suspension floats to the liquid surface, and under the action of horizontal flow, it is discharged with the overflow of the discharge outlet to obtain two products with different densities. The difference is that the scraper separator uses upwelling, while the vertical and axle separators use descending currents to maintain the stability of the suspension.
重介質(zhì)分選機(jī)操作與日常保養(yǎng)維護(hù)
(1) 嚴(yán)格執(zhí)行設(shè)備的操作規(guī)程,開(kāi)車前檢查分選槽底,提升輪或刮板是否有異物卡壓:開(kāi)車過(guò)程中注意提升輪是否有偏擺及卡阻現(xiàn)象檢查各部位潤(rùn)滑及溫升。
(2)開(kāi)車前先接通介質(zhì)泵,使分選槽內(nèi)充滿合格介質(zhì),刮板分選機(jī)工作介質(zhì)液面應(yīng)高于溢溜口100-120mm左右。
隨時(shí)檢查分選槽液位及密度,介質(zhì)添加執(zhí)行機(jī)構(gòu)和分流裝置,調(diào)整分選密度,達(dá)到要求值
(3)檢查齒棒卡板固定情況,如有松動(dòng),停車處理。
(4)潤(rùn)滑
提升輪軸,用3號(hào)鈣基潤(rùn)滑脂,每半年至1年更換一次。
減速器,用40號(hào)機(jī)油,3-6個(gè)月更換一次。
排媒輪軸,用3號(hào)鈣基潤(rùn)滑脂,每半年至一年更換一次。
外傳東傘齒輪,用3號(hào)鈣基潤(rùn)滑脂,每周清理更換一次。
(5)其他注意事項(xiàng)等等。。。。。。
常見(jiàn)故障處理:
(1)刮板鏈及襯板磨損。處理辦法:更換。
(2)刮板鏈錯(cuò)牙走斜
辦法處理:松開(kāi)尾部螺旋拉緊裝置,調(diào)整后,再拉。并保證要兩側(cè)刮板鏈張緊度一致。
Common fault handling:
(1) scraper chain and lining wear. Solution: replace.
(2) the wrong teeth of the scraper chain are inclined
Method: loosen the tail screw tension device, adjust, then pull. And ensure that both sides of the chain scraper tension is consistent.