本文選題：篩分設備　切入點：篩上物料　出處：《中北大學》2017年碩士論文

【摘要】：在煤炭生產(chǎn)、加工以及使用過程中,煤炭的制樣與檢測十分必要。篩分裝置是煤質(zhì)制樣過程中的重要環(huán)節(jié),物料的篩分效果將直接影響著后續(xù)檢測結(jié)果的準確性。而當前制樣過程關鍵篩分設備的體積較大、笨重且不宜攜帶,所以專門針對煤質(zhì)分析檢測的小型化篩分裝置及其篩上物料的動態(tài)特性研究有著重要的現(xiàn)實意義。通過對國內(nèi)外現(xiàn)有篩分裝備技術與篩分機理的綜合分析,運用動力學理論及虛擬樣機仿真,并結(jié)合實驗驗證,對篩上單顆粒物料的動態(tài)特性進行了深入的研究,得出了有益結(jié)論。首先,通過廣泛分析現(xiàn)有的篩分裝置及技術,設計了一種篩網(wǎng)傾斜式小型旋振篩分裝置,運用了運動質(zhì)點動力學理論得到了該篩分裝置篩上物料的動力學方程,并進行了正確求解,提出在該裝置上物料的運動軌跡為一條螺旋曲線。其次,以單顆粒篩分理論為基礎,利用ADAMS得到了該篩分裝置篩上物料在不同的電機轉(zhuǎn)速、彈簧剛度以及篩面傾角等可變條件下的運動軌跡、速度及角速度曲線,確定了合理的篩面傾角、電機轉(zhuǎn)速和彈簧剛度的取值范圍。最后,制造了旋振篩樣機,并進行了實驗驗證,得出了物料的篩分效率與所需篩分時間的變化曲線,實驗表明仿真結(jié)論與實際結(jié)果相符,從而獲得了篩上物料動態(tài)特性效果最佳時所對應的實際設計參數(shù)集合。本論文所設計的篩分裝置還具有體積小、重量輕等優(yōu)點,研究結(jié)論可以在小型化篩分裝置的設計與集成方面提供重要依據(jù),并為篩上單顆粒物料的動態(tài)特性及相關后續(xù)研究奠定理論基礎。
[Abstract]:In the process of coal production, processing and use, it is necessary to make and detect coal samples. The screening device is an important link in the process of coal quality sample preparation. The screening effect of materials will directly affect the accuracy of the subsequent test results. However, the key screening equipment in the current sample making process is large in volume, bulky and unsuitable for carrying. Therefore, it is of great practical significance to study the dynamic characteristics of the small size sieving device and the material on the screen, which is specially designed for the coal quality analysis and detection. Through the comprehensive analysis of the existing screening equipment technology and screening mechanism at home and abroad, By using dynamic theory and virtual prototyping simulation, and combining with experimental verification, the dynamic characteristics of single particle material on the screen are studied in depth, and some useful conclusions are drawn. Firstly, through the extensive analysis of the existing screening equipment and technology, A small rotary vibration screening device with inclined sieve was designed. The dynamic equation of the material on the screen was obtained by using the kinetic theory of moving particle, and the correct solution was carried out. The moving path of the material on the device is presented as a spiral curve. Secondly, based on the theory of single particle screening, the different motor speeds of the material on the screen are obtained by using ADAMS. The motion track, velocity and angular velocity curves under variable conditions, such as spring stiffness and sieve inclination angle, are determined. The reasonable range of sieve angle, motor speed and spring stiffness is determined. Finally, a rotary vibrating screen prototype is made. The experimental results show that the sieving efficiency and the required screening time change curve. The simulation results show that the simulation results are consistent with the actual results. Thus, the set of practical design parameters corresponding to the optimal dynamic characteristics of the material on the screen is obtained. The sieve device designed in this paper also has the advantages of small volume and light weight. The research results can provide important basis for the design and integration of the miniaturized sieve device and lay a theoretical foundation for the dynamic characteristics of the single particle material on the screen and related subsequent research.
【學位授予單位】：中北大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TQ53;TQ051.894

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