无堵塞泵叶轮的结构特点及适用范围

译文：
随着科学技术的发展，泵输送固态物质的应用领域日益扩大，如污水污物、泥浆纸浆、灰渣、粮食淀粉、甜菜水果、鱼虾贝壳，等等。对输送这类物质的泵有两个主要要求：一是无堵塞，二是耐磨损。对耐磨损主要与材料有关，无堵塞主要取决于叶轮的结构形式。 一、无堵塞泵叶轮的主要结构形式有： 1.开式或半开式叶轮； 2.旋流式叶轮； 3.单（双）流道式叶轮； 4.螺旋离心式叶轮。 二、各种类型的无堵塞叶轮有各自的特点，适用范围也不同： 1、开式或半开式叶轮：如磨损间隙增大，泵性能下降，且无堵塞性能差，不能输送大颗粒，长纤维物质； 2、旋流式叶轮：无堵塞性能好，耐磨性好，适合输送大颗粒物质，但无损性差，对输送物料破坏作用大，能输送含气体的液体，不适合输送含长纤维物质的液体； 3、单流道式叶轮：对输送物料的无损性好，无堵塞性能好，适于输送大颗粒长纤维物质，且耐磨性较好，但对平衡要求高，运行平衡性差； 4、双流道式叶轮：通过能力比单流道稍差，但因是对称流道，平衡性能好，运行平稳，适合于高扬程、大流量泵； 5、螺旋离心式叶轮：无堵塞性好，适合于含颗粒和纤维物质的液体，对输送物质破坏性小，即无损性好，但对平衡要求较高。

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原文：
With the development of science and technology, solid-state pumping applications growing material, such as sewage contamination, pulp sludge, ash, food starch, sugar beet fruits, fish and shrimp shells, and so on. Pump on the transmission of such material has two main requirements: First, non-blocking, and second, resistance to wear. Wear resistant materials primarily related to non-blocking depending on the impeller structure. 1, without blocking Self-priming magnetic pumpsthe main structure of the pump impeller forms: 1. Open or semi open type impeller; 2. Swirling impeller; 3. Single (double) flow impeller; 4. Screw centrifugal impeller. Second, various types of non-blocking impeller has its own characteristics, the scope is different: 1, open or semi-open impeller: If the wear gap increases, pump performance degradation, poor performance and no plug, can not transport large particles, long fiber material; 2, Vortex Impeller: Non-clogging performance, wear resistance, suitable for handling large particulate CQF Series Magnetic Drive Pumpmatter, but poor non-destructive, damaging effects on the transport of materials large, can transport liquids containing gases, is not suitable for delivery of liquid material with long fibers ; 3, single-channel impeller: the transport of materials with good non-destructive, non-blocking performance, suitable for transmission of large particle-fiber material, and wear better, but to balance the demands of high, running balance is poor; 4, double channel impeller: Capacity little worse than the single channel, but is symmetric flow, a balance ofMagnetic Pumps good performance, smooth operation, suitable for high head, high flow pump; 5, screw centrifugal impeller: no plug is good, suitable for containing liquid particles and fibrous material, the transporting of material destruction of small, non-destructive nature that is good, but require a higher balance.