三通道吊式直線振動篩

機械論文編號:JX297 所有圖紙,外文翻譯。論文字數:28368.頁數:77
目    錄

1 概述 ...................................................................1
1.1 篩分機構的分類 .......................................................1
1.2 振動篩............................................................... 1
1.3 國內外篩分機械行業現狀............................................... 2
1.3.1 篩分機械的應用..................................................... 2
1.3.2 國內外篩分機械的發展 ...............................................3
1.3.3 國內振動篩的研發和制造能力 .........................................5
1.4 篩分機械發展趨勢..................................................... 6
1.5 振動篩的工作原理..................................................... 7
1.5.1 慣性振動篩的工作原理............................................... 8
1.5.2 直線振動篩的工作原理............................................... 8
1.5.3 直線振動篩篩面上物料的運動分析 .....................................10
2 直線篩的設計 ...........................................................12
2.1 振動篩的選擇......................................................... 12
2.2 激振器的確定 .........................................................13
2.3 三通道分法的優點..................................................... 17
3 直線篩結構設計......................................................... 26
3.1 篩箱結構............................................................. 26
3.2 激振器的選擇 .........................................................27
3.3 篩面及其緊固裝置..................................................... 28
3.3.1 篩面的安裝型式 .....................................................28
3.3.2 篩框............................................................... 31
3.3.4 傳動方式........................................................... 33
3.3.4 支撐裝置 ...........................................................36
4 主要工藝參數和技術參數 .................................................37
4.1單層三通道吊式直線振動篩的技術特征.................................... 37
4.2 篩面傾角a ............................................................37
4.3 振動方向角B.......................................................... 37
4.4 篩面的振幅........................................................... 38
4.5 篩面的振動次數 .......................................................38
4.6 生產率的計算 .........................................................40
4.7 偏心塊的設計與計算................................................... 41
4.8 軸承的選取與校核..................................................... 46
4.9 軸的設計和校核 .......................................................47
4.10 鍵的選擇和校核...................................................... 50
4.11 彈簧的設計計算...................................................... 51
4.12 橫梁的設計和校核.................................................... 52
5 使用說明書............................................................. 55
5.1 激振器的密封與潤滑................................................... 55
5.2 篩分機的使用和維護 ...................................................55
5.3 振動篩的操作、維護和維修............................................. 56
5.4 振動機的安全技術 .....................................................56
5.5 篩子的常見故障和消除措施 .............................................57
參考文獻 .................................................................59
小結 ....................................................................61
英文原文 .................................................................62
中文譯文................................................................. 69
致  謝................................................................... 76

摘   要

     篩分作業是煤炭加工的重要環節，它廣泛用于篩選廠和選煤廠。篩分作業所用的設備多為振動篩
振動篩是一種適合潮濕細粒級難篩物料干法篩分的振動篩分機械設備，是目前國內處理難篩物料的振動篩分機械設備。振動篩具有大振幅、大振動強度、較低頻率和彈性篩面的工藝特點。工作過程中始終保持最大的開孔率，從而篩分效率高、處理能力大，篩板更換方便，降低了成本。振動篩超大篩面和大處理能力可滿足現場的生產需要。振動篩篩子的結構采用多段篩面振動而篩箱和機架不參與振動的運動方式，使篩子實現了大型化。
我國的直線振動篩研究一直落后與國外，特別是在大型化方面。
該設計結構與普通篩不一樣，它有4塊側板，中間兩側是主要的，振動器安裝在它上面，由它向篩面傳遞振動力，外面兩塊是次要的，只起擋料板的作用。物料是通過三個通道篩分和運輸的，這種結構的最大優點是橫梁尺寸可以大大減小，大大降低參振質量。經濟效益十分明顯，而且篩型越大，效果越明顯。
激振力直接由側板傳遞到各個部件上,省去工字大梁,降低了篩箱重量和成本,但對篩箱結構設計提出了較高的要求,為此我們對篩箱強度、剛度、重心、空間結構進行了優化設計。

關鍵詞：
選煤機械； 振動篩； 設計； 篩分

Abstract

The screening work is the coal processing important link, it widely uses in screening the factory and the coal dressing plant.
The screening work uses the equipment many shaker is one kind suits the moist thin grade for shaker the difficult to sieve the material dry screening the vibration screening mechanical device, is the present domestic processing difficult to sieve the material the vibration screening mechanical device. The shaker has the great oscillation amplitude, the big intensity of vibration, to compare the low frequency and the elastic screening surface craft characteristic. In the work process maintains the biggest percentage open area throughout, thus the screening efficiency is high, handling ability is big, the lamina crib Rosa replacement was convenient, reduced the cost. The shaker ultra big screening surface and big handling ability may satisfy the scene the production need. The shaker screen's structure uses the multistage screening surface vibration to sieve the box and the rack does not participate in the vibration the mode of motion, caused the screen to realize the large scale.
Our country's straight line shaker research has been backward and is overseas, specially in large scale aspect.
The this design structure and sieves ordinary is dissimilar, it has 4 side bars, the middle both sides are main, the vibrator installs above it, by it to the screening surface transmission vibration power, outside two is secondary, only plays keeps off the yard lumber the role. The material is through three channel screening and the transportation, this kind of structure's biggest merit is the crossbeam size may reduce greatly, reduces the Parameter to inspire the quality greatly. The economic efficiency is very obvious, moreover sieves is bigger, effect more obvious.
The exciting force transmits on directly each part from the side bar, omits the I-girder, reduced has sieved the box weight and the cost, but to sieved the box structural design to propose the high request, we to sieved the box intensity, the rigidity, the center of gravity, the spatial structure to carry on the optimization design for this reason.

Keywords:
coal preparation machine； vibrating screen；  design；  screening