鑄造車間負(fù)壓除塵系統(tǒng)的設(shè)計
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電子電工畢業(yè)論文(設(shè)計) |
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鑄造|旋風(fēng)除塵器|負(fù)壓除塵|鑄造車間|除塵系統(tǒng)|畢業(yè)設(shè)計 |
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本科 |
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2012-06-13 16:34:00 |
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本科畢業(yè)設(shè)計 鑄造車間負(fù)壓除塵系統(tǒng)的設(shè)計
鑄造|旋風(fēng)除塵器|負(fù)壓除塵|鑄造車間|除塵系統(tǒng)|畢業(yè)設(shè)計
文件格式:word+CAD+pdf
本科畢業(yè)設(shè)計 鑄造車間負(fù)壓除塵系統(tǒng)的設(shè)計
一套完整的畢業(yè)設(shè)計,包括論文封面、任務(wù)書、開題報告、論文正文、中英文翻譯、CAD圖紙7張。
有預(yù)覽文件請查看。
論文正文共41頁。共21767字符數(shù)(不計空格)。整套壓縮包大小:1.29MB。
中英文翻譯 Shrinkage of carrots during drying in an inert medium fluidized bed(胡蘿卜在惰性介質(zhì)流流化床中干燥的收縮)
鑄造車間負(fù)壓除塵系統(tǒng)的設(shè)計
摘要:
粉塵是人類健康的大敵,因為它帶著許多細(xì)菌病毒和蟲卵到處飛揚,傳播疾病。. 工業(yè)粉塵、纖塵能使工人患上各種難以治愈的職業(yè)病,過多的灰塵還會造成環(huán)境污染,影響人們的正常生活和工作,誘發(fā)人類呼吸道疾病等等。除塵器是在車間必不可少。
利用旋轉(zhuǎn)的含塵氣體所產(chǎn)生的離心力,將粉塵從空氣中分離出來的一種干式凈化設(shè)備,成為旋風(fēng)除塵器。旋風(fēng)除塵器應(yīng)用最為廣泛,,其特點是結(jié)構(gòu)簡單,除塵效率較高,操作簡單,價格低廉。旋風(fēng)除塵器對于大于10μm的較粗粉塵,凈化效率很高。但對于5~10μm以下的細(xì)顆粒粉塵凈化效率較低,所以旋風(fēng)除塵器多用于粗顆粒粉塵的凈化,或多用于多級凈化的初步處理。適用于鑄造車間除塵。
負(fù)壓除塵系統(tǒng)中,除塵器設(shè)置在通風(fēng)機之前。
其特點: ①由于除塵器設(shè)置在通風(fēng)機之前,流過通風(fēng)機的氣體已經(jīng)經(jīng)過除塵,含塵量低。通風(fēng)機受磨損大大減低,運行壽命長,處理初濃度高的含塵氣體時,一般采用負(fù)壓除塵系統(tǒng)。②除塵器和管道處于通風(fēng)機的負(fù)壓階段,容易吸入空氣,產(chǎn)生漏風(fēng)。負(fù)壓除塵系統(tǒng)的漏風(fēng)率為5%~10%,加大了通風(fēng)機的風(fēng)量,增加了電耗。③在負(fù)壓除塵系統(tǒng)設(shè)計中應(yīng)采用措施盡可能的減少除塵器和管道的漏風(fēng),以保證除塵器的良好運行。
關(guān)鍵詞: 鑄造 旋風(fēng)除塵器 負(fù)壓除塵
Dust vacuum system design
Abstract:
Dust ,which carries lots of bacterial virus and ovum flying forwarding in the air ,has become a formidable enemy of human being ,endangering the mankind’s health , Industrial dust and fine dust cause various kinds of incurable occupational disease among workers. Also, excessive dust leads to environmental pollution, having a influence on the people’s daily lives and work, causing respiratory disease,etc. All these make the Dust collector indispensible in the workshop.
By using the cyclone dust rotating centrifugal force generated by gas, the dust is separated from the flow of a dry gas - solid separation device, which forms the Cyclone Dust Collector. The Cyclone Dust Collector is widely used, which featured in it’s simple structure, effectiveness in dust removal, simple operation, and low cost. Cyclone Dust Collector is efficient for the capture, separation of more than 5 ~ 10μm dust. But as to the dust under 5-10μm ,it performs less effectively. Therefore, the Cyclone Dust Collector is mostly used in the casting workshop, purifying the coarse particle dust or becomes the primary treatment of multistage purification.
In the negative pressure dust pelletizing system ,removal equipment was set in front of the ventilator .it’s characteristics are as follows : 1.Because the removal equipment was set in front of the ventilator ,the gas passing through the ventilator has been removed ,therefore, the dustiness index is low 2.The dust collector and the pipeline situated in the negative pressure section ,which is easy to snifting the air ,leads to air leak .the air leak ratio of dust vacuum system is 5% to 10% ,increasing the air quantity of ventilator ,which leads to the electricity cost. 3. should be reduced in the dust collector and pipeline as much as possible In designing the dust vacuum system.
Key words: Casting, Cyclone Dust Collector, vacuum dust removal
目錄
1 緒 論
1.1鑄造車間的污染及其除塵狀況的概述......... ......... ......... ... 1
1.1.1中國鑄造業(yè)現(xiàn)狀及鑄造車間污染..................................1
1.1.2研究目的和意義........................ .......................1
1.1.3 除塵的目的...................................................2
1.1.4鑄造車間組成..................................................2
1.2工業(yè)生產(chǎn)中的除塵設(shè)備............................................3
1.2.1除塵系統(tǒng)的組成................................................3
1.2.2除塵設(shè)備在鑄造車間生產(chǎn)中的應(yīng)用................................3
1.2.3鑄造車間中除塵設(shè)備運行現(xiàn)狀 ...................................3
1.3除塵設(shè)備的選擇..................................................4
1.3.1除塵系統(tǒng)分類及特點............................................4
1.3.2原始資料(數(shù)據(jù))及設(shè)計技術(shù)要求.................................. 4
1.4旋風(fēng)除塵器概述..................................................4
1.5旋風(fēng)除塵器的優(yōu)缺點..............................................5
1.5.1旋風(fēng)除塵器的優(yōu)點..............................................5
1.5.2旋風(fēng)除塵器的缺點..............................................5
2 旋風(fēng)除塵器的設(shè)計
2.1旋風(fēng)除塵器的結(jié)構(gòu)和工作原理......................................5
2.2旋風(fēng)除塵器的性能及影響因素......................................6
2.2.1旋風(fēng)除塵器的性能指標(biāo)..........................................6
2..2.2影響旋風(fēng)除塵器性能的主要因素................................9
3 除塵器結(jié)構(gòu)設(shè)計計算
3.1選擇旋風(fēng)除塵器的型式..........................................18
3.1.1旋風(fēng)除塵器的分類............................................18
3.1.2旋風(fēng)除塵器的選用............................................19
3.2選擇旋風(fēng)除塵器的入口風(fēng)速......................................20
3.3計算入口面積Fj、入口高度a和寬度b.............................20
3.4計算進口過渡管的尺寸...........................................21
3.5計算風(fēng)量匯集箱的尺寸...........................................23
3.6 計算出口過渡管的尺寸..........................................23
3.7 計算灰斗的尺寸................................................24
3.8旋風(fēng)除塵器單體左外筒鋼板展開尺寸...............................25
3.9 關(guān)風(fēng)器的選擇..................................................25
3.10 風(fēng)機的選擇...................................................27
4除塵器壓力損失ΔP和除塵效率η的計算
4.1壓力損失ΔP的計算................................ ......... ... 27
4.2除塵效率η的計算.................................. ......... ...29
5 吸塵罩的設(shè)計
5.1吸塵罩的選擇.............................. ...... ........36
5.2吸塵罩的計算....................................... . ...37
6 除塵器的安裝使用及維護管理
6.1除塵器使用注意事項..................... ..... ..... ............37
6.2除塵器的運行....................................... ..... ......37
6.3除塵器的維護..................................... ..... ........38
總結(jié)............ ............ ............ ............ ............39
參考文獻.............................................. ..... ......40
致謝................ ................ ................ .............41
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