壓力篩選機之圓筒型篩板孔徑變形之調查

Investigation on the Aperture Deformation of a Basket Screen Plate in a Pressure Screen

邱俊雄(Chun-Hsiung Chiou) ； 林景湖(Ching-Hu Lin)

《台灣林業科學》 13卷1期 (1998/03) Pp. 79-84

https://doi.org/10.7075/TJFS.199803.0079

摘要

加壓篩選常用於漿廠、紙廠以除去雜物及篩分纖維，先進的篩選技術是壓力篩於胴體內以離心力與篩板把漿流分成良漿與棄漿，胴體內漿流由內穿過篩孔向外流；進料面的篩孔常因製造、材質、運作不當、磨損而損壞。其圓孔篩板有90%發生孔邊凹陷、孔徑變大；狹孔篩板有95%發生狹孔變大、扭曲、35%狹孔間隔斷裂。篩孔變形將會失去篩選作用。

關鍵字

篩板 ； 篩孔 ； 變形

並列摘要

Pressure screening is a predominant method of cleaning and fractionating fiber suspensions in pulp and paper mills; advanced screening technology mostly uses centrifugal force and a screen plate to separate the stock flow into acceptable flow and reject flow. The flow path is from inside to outside of the screen basket. When screening problems occur, which can be caused by aperture deformation, the apertures on the feeding surface are always damaged, which is attritributed to either plate production, poor quality of raw material, improper operation, or excessive wear. As a result, 90% of screen baskets of the hole type collapes with enlarged apertures; 95% of screen baskets of the slot type twist with enlarged slots; and 35% of the slot type break. Taken together, aperture deformation results in the loss of screen function.

並列關鍵字

screen plate ； aperture deformation