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社會效益。但傳統(tǒng)的過濾分離設備占地空間大,連續(xù)生產(chǎn)能力低,自動化程度不高,造成人力物力財力的浪費。本文以自行開發(fā)50m3/h處理量全自動白清洗過濾器為基礎,提出了全自動自清洗過濾器的各操作參數(shù)的設計思想和方法,并建立了過濾過程中過濾器的模型,借此確定控制系統(tǒng)的控制參數(shù)。主要工作內容如下。研制設計了一臺處理量為50m3/ h、 Mpa,amp。mu。m,過濾總面積為10㎡,工作溫度為5℃105℃的全自動自清洗過濾器。該過濾器在運行過程中無須停運以清洗過濾元件,整機體積較小,精度可調節(jié),適合于各類工業(yè)生產(chǎn)。本文給出了這種過濾器的整體設計方法以及設計圖紙,并對過濾器內部過濾機理進行分析,討論了幾個過濾參數(shù),并應用于過濾器控制系統(tǒng)設計之中。br /br /title: Automatic vertical filter machine designbr /Key Words: filter,structure。 control system;Programmable enfroller;br /Abstract:As short of water resource and more and more serious situation of water pollution, filtration and separation have been the best way to settle the problem of Reuse of waste water and realization of well economy benefit and social there are several disadvantages in these raditional filters such as great volume,discontinuous production, lack of automation, great waste of manpower, materialresources, financial. Based on design of automatic selfcleaning filter on industrial scale (50 m3/h), the design and optimization procedures of several operation parameters are presented and a model of filter is obtained as well,then to calculate control parameters of control main research contents are following as:A auto control selfcleaning filter on industrial scale( 50m 3/h) , work pressure() , filtration accuracy(amp。mu。m), filtration surface(10㎡) , Motor power( KW) and work temperature(5 ℃ 105 ℃)has been designed . auto control selfcleaning filter drive itself to clean pletely by its pressure of filtrated liquid and without of the filteris so little and precision can be modulated to fit for kinds of industry produce. In this paper, a suit of drawing and design procedures of such filter has been during filtration in the filter has been studied are obtained p class=39。Ffe39639。/p /pbr /br /br /br / br /br /pbr /目錄amp。nbsp。amp。nbsp。amp。nbsp。 字br /第一章、設計題目amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。 (1)br /第二章、設計意義amp。nbsp。amp。nbsp。amp。nbsp。 amp。nbsp。amp。nbsp。 (3)br /第三章、方案選擇amp。nbsp。amp。nbsp。amp。nbsp。 amp。nbsp。amp。nbsp。amp。nbsp。 (6)br /第四章、過濾部分的設計amp。nbsp。amp。nbsp。amp。nbsp。 amp。nbsp。amp。nbsp。amp。nbsp。 amp。nbsp。amp。nbsp。 (7) p class=39。Ffe39639。/p br /amp。nbsp。 amp。nbsp。amp。nbsp。amp。nbsp。 amp。nbsp。amp。nbsp。amp。nbsp。 amp。nbsp。amp。nbsp。 (7)br /amp。nbsp。amp。nbsp。 amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。 (12)br /amp。nbsp。amp。nbsp。 amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。 (18)br /amp。nbsp。 amp。nbsp。amp。nbsp。amp。nbsp。 amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。 (19)br /amp。nbsp。amp。nbsp。 4. 5傳感器的選擇與信號檢測amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。 (22)br /amp。nbsp。amp。nbsp。 amp。nbsp。amp。nbsp。amp。nbsp。 (23) br /第五章、控制部分的設計amp。nbsp。amp。nbsp。amp。nbsp。 (24)br /amp。nbsp。amp。nbsp。 控制系統(tǒng)的選擇amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。 (24)br /amp。nbsp。amp。nbsp。 工藝流程amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。 (26)br /amp。nbsp。amp。nbsp。 PLC接線圖amp。nbsp。amp。nbsp。 (27)br /amp。nbsp。amp。nbsp。 amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。 (28)br /第六章、設計的應用amp。nbsp。amp。nbsp。amp。nbsp。 (33) br /第七章、設計心得amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。 (35)br /第八章、參考文獻amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。amp。nbsp。 (36)br /附錄:外文翻譯及文獻 span class=39。Ffe39639。/span /pP/Pp[摘要]br /隨著的快速發(fā)展,的誠信危機也開始為人們所關注。本文介紹了我國電子商務誠信體系的現(xiàn)狀和存在的問題,并相應提出了加強誠信體系建設的一些建議。 br /[關鍵詞] br /電子商務amp。nbsp。 誠信體系amp。nbsp。 網(wǎng)絡企業(yè)amp。nbsp。 br /[Summary]br /along with electronic merce of fast development, the trustworthiness crisis of electronic merce also the beginning is pay attention to by text introduction the our country electronic merce trustworthiness the problem of present condition and existence of the system, and corresponded to put forward to strengthen trustworthiness system construction of some suggestion. br /[Keyword] br /the system network of the electronic merce trustworthiness business enterprise /pp[摘要]amp。nbsp。1br /[Summary]amp。nbsp。1br /[Keyword]amp。nbsp。1br /背景amp。nbsp。3br /第一、我國電子商務中信用體系的現(xiàn)狀amp。nbsp。3br /1.1電子商務信用體系的概念amp。nbsp。4br /1.2電子商務信用體系的特點amp。nbsp。5br /1.1.