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YQL无堵塞纸浆泵

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详细信息

一、概述

此系列泵属于单级单吸式离心泵,其泵主要结构特征是叶轮退缩在压水室后面的泵腔内,叶轮旋流时在叶轮前面的无叶腔内形成贯通流和循环流。贯通流通过叶轮叶片间流道进入泵室而流出,循环流则在无叶腔内循环。由于循环流中部是低压区,固体颗粒掉入此区域在旋流的带动下流出,因此大部分固态物质可不经过叶轮而直接从无叶腔流出。

二、用途

适用于输送复杂介质或含杂质流体,如餐厨垃圾含短纤维物质或粪便的两相流体,亦称无堵塞泵。旋流泵与其他杂质泵相比具有以下特点:

⑴无堵性能好,可通过大约与泵出口口径相当的固体颗粒,但对输送的物料具有一定破坏性。

⑵叶轮和泵体之间的轴向间隙对泵性能的影响不如离心泵那样敏感,无需间隙调整。

⑶耐磨性好,不存在磨损后间隙加大贰造成性能下降的问题,再加上固体颗粒绝大部分不经过叶轮,因此对叶轮的磨损也相应减轻,叶轮使用寿命长。

⑷叶轮为开式径向叶轮,制造工艺简单,叶轮流道容易加工且叶轮容易平衡,运行平稳。

⑸泵吸入性能好,具有良好的抗汽蚀性能,可抽送含气率较高的液体,也可抽送高浓度以及高粘度的液体。

三、性能

流量(Q):5~400m3/h

扬程(H):5~125m

工作压力(P):≤2.4MPa

温度(t):≤150℃

四、设计特点

旋流泵结构形式和流动与传统泵有很大差别,因而旋流泵有以下特点:

1、叶轮和泵体无配合间隙,不存在磨损使间隙增大造成性能下降的问题。

2、因固体颗粒大部分不通过叶轮,因而无堵塞性能好,叶轮磨损也相应减轻。

3、输送的物质大部分在无叶腔的旋流带动下流出,因而无损性差,即对物质的破坏作用大。

4、可以输送含气体的液体。


五、泵的结构特点

泵体为轴向吸入,径向排出。吐出口与轴在一垂直面上,泵体上铸出支撑脚,直接固定在底座上。泵盖通过止口固定在悬架上,泵体与悬架体将泵盖夹紧。在检修时拆除悬架体和泵体之间的联结螺母,泵的转动部分便可由泵体中退出,无须拆卸进出口管路。这是国际上一种通用的化工泵结构。对于大规格泵,泵联轴器和电机轴之间加一中间加长节,这样在检修时,拆下中间加长节,转子部分可退出泵体,电机不必移动。

结构图

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