摘  要：各類渣漿泵廣泛使用的副葉輪除防止液相中的固態(tài)雜質(zhì)擴散外，還有兩項重要功能：降低密封處流體壓力；平衡水體作用于葉輪的軸向力以減輕軸承軸向負荷。副葉輪這兩項涉及到渣漿泵可靠性與壽命的功能都依賴于副葉輪正確幾何尺寸的確定。針對副葉輪兩項預(yù)期功能，導(dǎo)出了副葉輪幾何尺寸計算的兩種程序。以旋轉(zhuǎn)流體中壓力分布規(guī)律和數(shù)學(xué)分析為基礎(chǔ)，給出了兩種目標的副葉輪的幾何尺寸的計算方法和過程，導(dǎo)出了便于應(yīng)用的結(jié)論與公式。這一成果為設(shè)計人員定量確定副葉輪提供了理論可靠的新依據(jù)，保證副葉輪在運行中更準確地實現(xiàn)預(yù)期的功能要求，有利于提高各類渣漿泵的可靠性和使用壽命。
關(guān)鍵詞：渣漿泵; 副葉輪; 設(shè)計; 數(shù)學(xué)分析;幾何尺寸
中圖分類號：TH311文獻標志碼：A文章編號:

Analytical Solution to Expeller Diameters

Yan Jing，Kan Nengqi , Zeng Chaoqiang , Wan Tao
(School of Energy and Environment Xihua University ,Chengdu, Sichuan, 610039,China)

Abstract: In addition to preventing debris in liquids pumped from spreading, expellers which are extensively used in all kinds of slurry pumps perform two other functions, that is, reducing liquid pressure at seals and balancing axial thrust acting on impellers so as to reduce axial loads for bearings. Both functions are closely pertinent to reliability and life span of pumps and are exclusively determined by geometry of expellers. Authors of this paper formulated two programmers to find expeller dimensions for their expected aims. Based on pressure distribution within a rotating water body and mathematical analysis, authors offered calculating principles and processes to determine geometrical parameters for two kinds of expellers, and derived some  equations for design practice. Results presented in the paper will be beneficial to improve slurry pump reliability and performance..
Key words: slurry pump; expeller; design; mathematical analysis; geometric dimension