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| 瀝青(qīng)輸送泵NYP110-RU-T2-W11高粘度(du)泵配XWD11KW-7-13流量7.3m3/h,壓力(li)0.8Mpa | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 發布時間：2015-1-4 14:40:04 點擊(ji)次數： | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Asphalt is composed of different molecular weight hydrocarbons and non-metallic derivatives of dark brown complex mixture, a liquid, is a kind of waterproof and moistureproof and anticorrosive organic cementing materials.Used in coatings, plastic, rubber and other industrial and paved road, etc. 中文名 瀝(lì)青Chinese name asphalt CAS登錄号8052-42-4The CAS login number 8052-42-4 EINECS登錄(lu)号232-490-9EINECS registration number 232-490-9 熔 點 485Melting point 485 沸 點<470 ℃boiling point < 470 ℃< iv> 水(shui)溶性不溶于水(shui)Water soluble does not dissolve in water 密 度 1.15-1.25Dense degree of 1.15 to 1.25 外 觀半固(gù)體或液體狀态(tài)Outside view half solid or liquid state 閃 點204.4Flash point 204.4 危險性描(miáo)述健康危害：中(zhōng)等毒性Describe health hazard risk: medium toxicity 來 源煤(méi)和石油To the source of coal and oil 成 分瀝(li)青質和樹脂Into asphaltene and resin 導電性(xing)能絕緣體(常溫(wēn)下)Conductivity insulator (room temperature) 瀝青屬于憎(zēng)水性材料，它不(bú)透水，也幾乎不(bu)溶于水、丙酮、乙(yǐ)醚、稀乙醇，溶于(yu)二硫化碳、四氯(lǜ)化碳、氫氧化鈉(na)。瀝青及其煙氣(qì)對皮膚粘膜具(ju)有刺激性，有光(guang)毒作用和緻癌(ai)作用。我國三種(zhong)主要瀝青的毒(dú)性：煤焦瀝青>頁(ye)岩瀝青>石油瀝(li)青，前二者有緻(zhì)癌性。瀝青的主(zhu)要皮膚損害有(you)：光毒性皮炎，皮(pí)損限于面、頸部(bù)等暴露部分；黑(hei)變病，皮損常對(duì)稱分布于暴露(lù)部位，呈片狀，呈(cheng)褐－深褐－褐黑色(se)；職業性痤瘡；疣(yóu)狀贅生物及事(shi)故引起的熱燒(shao)傷。此外，尚有頭(tou)昏、頭脹，頭痛、胸(xiong)悶、乏力、惡心、食(shí)欲不振等全身(shen)症狀和眼 、鼻、咽(yān)部的刺激症狀(zhuang)。Asphalt is hydrophobic material, it impermeable, almost insoluble in water, dilute ethanol, acetone, ether, soluble in carbon disulfide, carbon tetrachloride, sodium hydroxide.Asphalt and flue gas of skin mucous membrane irritation, has the light effect and the effect that cause cancer.China's three major asphalt toxicity: coal tar > > oil shale asphalt asphalt, before both have carcinogenicity.The main skin lesions are: asphalt light contact dermatitis, skin confined to the face, neck and other exposed parts;Melanosis, skin lesions often symmetrical distributed in the exposed parts, plate shaped, brown - deep brown - brown-black;Occupational acne;Verrucous vegetations and the accident cause thermal burns.In addition, there are dizziness, head bilges, headache, chest tightness, fatigue, nausea, loss of appetite and other systemic symptom and eye, nose, pharynx and irritation. 煤焦瀝青Coal tar 石油瀝青asphalt 石油(yóu)瀝青是原油蒸(zhēng)餾後的殘渣。根(gen)據提煉程度的(de)不同，在常溫下(xià)成液體、半固體(ti)或固體。石油瀝(lì)青色黑而有光(guāng)澤，具有較高的(de)感溫性。由于它(tā)在生産過程中(zhōng)曾經蒸餾至400℃以(yi)上，因而所含揮(hui)發成分甚少，但(dàn)仍可能有高分(fèn)子的碳氫化合(he)物未經揮發出(chu)來，這些物質或(huo)多或少對人體(tǐ)健康是有害的(de)。Petroleum asphalt is after crude distillation residue.Depending on the degree of refining, into a liquid, semi-solid or solid at room temperature.Petroleum pitch dark and luster, has higher heat resistance.Because it had distillation in the production process to more than 400 ℃, thus contained little volatile component, but may still have high polymer without volatile hydrocarbons, which more or less is harmful to human health. 天然瀝青Natural asphalt 天然(ran)瀝青儲藏在地(dì)下，有的形成礦(kuang)層或在地殼表(biao)面堆積。這種瀝(lì)青大都經過天(tiān)然蒸發、氧化，一(yī)般已不含有任(ren)何毒素。Natural asphalt storage in underground, some forming seam or piled up in the earth's crust surface.The asphalt mostly through the natural evaporation and oxidation, generally do not contain any poison. 瀝青材(cai)料分為地瀝青(qīng)和焦油瀝青兩(liang)大類。地瀝青又(you)分為天然瀝青(qing)和石油瀝青，天(tian)然瀝青是石油(you)滲出地表經長(zhang)期暴露和蒸發(fa)後的殘留物；石(shi)油瀝青是将精(jīng)制加工石油所(suo)殘餘的渣油，經(jing)适當的工藝處(chu)理後得到的産(chǎn)品。焦油瀝青是(shi)煤、木材等有機(ji)物幹餾加工所(suǒ)得的焦油經再(zài)加工後的産品(pǐn)。工程中采用的(de)瀝青絕大多數(shù)是石油瀝青，石(shi)油瀝青是複雜(zá)的碳氫化合物(wù)與其非金屬衍(yǎn)生物組成的混(hun)合物。通常瀝青(qīng)閃點在240℃~330℃之間，燃(ran)點比閃點約高(gao)3℃~6℃度，因此施工溫(wen)度應控制在閃(shan)點以下。Asphalt material divided into two categories, pitch and bitumen.Asphalt is divided into natural asphalt and petroleum asphalt, natural bitumen is oil seepage surface after long exposure and evaporation residue;Petroleum asphalt is a residual of residual oil will be refined processing, after appropriate processing products.Bitumen is coal, wood and other organic matter carbonization processing tar after reprocessing of products.Engineering used in the asphalt is the vast majority of asphalt, asphalt is a complex mixture of hydrocarbons with nonmetal derivatives.Usually asphalt flash point between 240 ℃ ~ 330 ℃, flash point is higher than flash point about 3 ℃ ~ 6 ℃ degrees, so the construction temperature should be controlled below the flash point.v 瀝青輸(shu)送泵是容(rong)積式内齧合齒(chi)輪泵，主動齒輪(lún)（外轉子）帶動被(bei)動齒輪（内轉子(zǐ)）旋轉時，不斷産(chan)生封閉的空間(jiān)，在吸油區齒輪(lún)逐漸脫離齧合(he)而液體不斷地(di)充滿齒間并被(bei)帶到出油區，齒(chǐ)輪在出油區進(jìn)入齧合時液體(tǐ)被排出。兩個旋(xuán)轉齒輪的共同(tóng)作用，形成一個(ge)穩定的體積排(pai)量，沒有脈動。由(yóu)于泵是完全對(dui)稱的，泵可以反(fan)轉，液流方向也(yě)随之改變。但應(yīng)注意，泵的轉向(xiang)可能受到密封(fēng)或泵内其它結(jie)構的限制，用戶(hù)有反轉要求時(shí)應在訂貨時做(zuo)出說明。 該泵結構簡單(dān)，适用範圍廣，可(kě)以輸送高粘度(dù)和低粘度的各(ge)種液體，最高輸(shu)送粘度可達。溫度範圍自(zi)輸送(song)液體可有潤滑(huá)性也可以沒有(you)潤滑性。由于内(nèi)外轉子齒數互(hù)為質數，任意兩(liang)齒之間的機會(hui)相等，因此齒的(de)磨損非常均勻(yun)。 不同(tóng)的使用條件，泵(bèng)的結構形式可(kě)能不同，具體應(ying)用請向廠家或(huo)本公司客戶代(dài)表咨詢。需要指(zhi)出的是泵的轉(zhuan)速愈高，泵的磨(mó)損愈嚴重，液體(tǐ)中如含有磨料(liào)物質，泵的材料(liao)應選用耐磨材(cai)質，在此種工況(kuàng)下，泵的壓力和(he)轉速都應降低(dī)，高溫條件下，則(ze)應增加泵的間(jiān)隙，并采用耐熱(re)材料 。
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