What is a Self-Priming Pump, and How Does it Work?

自吸式泵是一种特定类型的液体泵，该液体泵设计成具有所需的腔室内所需的液体或泵体，以开始泵送过程。这提供了加工厂中的运行效率提高的可能性，其中泵用于各种重复的又间歇性操作。

在卫生和卫生加工行业，泵被纳入过程线以执行几个不同的任务。

泵用于：

• 通过流程线移动产品
• PumpCIP（清洁）fluids to clean and sanitize pipes and components
• Transfer liquids from one storage vessel to another
• 空坦克和鼓

卫生加工行业中使用的大多数液体泵都是离心式泵。

Centrifugal pumps are:

• Simple
• 结实的
• Relatively inexpensive
• 适用于泵送水和其他低粘度液体，如CIP解决方案under circumstances where suction conditions are difficult

对于这些类型的低粘度流体，通常优选V型离心泵设计，具有真空泵和靠近排放口的正密封。This allows a V-type centrifugal pump to readily pull a vacuum until it is full of fluid.

然而，标准离心泵不设计为自吸引。Unlike the pump types already described, standard centrifugal pumps do not trap liquids when not in use — although engineered modifications to the pump’s housing may allow some of these types of pumps to be self-priming.

With centrifugal pumps,当叶轮在泵的腔室内的液体中旋转时，发生泵送动作，使液体置于液体并强制通过离心力进入泵的排出口。

Fluids typically enter the pump at the center of the impeller and are discharged via a port on the outer perimeter of the pump’s body. The impeller is often directly coupled to the pump’s motor, in what is called a monoblock design.

空气是这种泵的主要敌人。When a standard centrifugal pump encounters air pockets, it can become “air bound”, and refuse to operate. Air intrusion into standard centrifugal pumps is typical, as these types of pumps don’t feature tightly coupled pumping mechanisms such as gears or screws and have no seals between the suction and discharge sides of the pump.

通过在引发过程中最初将泵的工作机制中的任何残留空气最初混合泵的工作机制中的任何残留空气来克服空气结合。

好处of Self-Priming Centrifugal Pumps

• 可以处理各种液体
• Work well with slurries, corrosive liquids, and suspended solids
• 与潜水型泵相比，即使在泵中不再浸没在液体罐或船舶之后，自吸离离心泵也将继续泵送液体
• 非常适用于频繁和间歇泵送操作，因为涉及泵启动在启动时的步骤被消除

Disadvantages of Self-Priming Centrifugal Pumps

• Can't operate without the presence of the initial priming liquid in the pump’s reservoir
• Due to the need for a liquid reservoir, this type of centrifugal pump can be larger than a standard model, which may cause issues in applications where space is limited
• 需要尽可能接近生产线，以避免在自引导操作期间耗尽泵的液体储存器

LKH Prime.

The LKH Primepump fromAlfa Laval是一种非常适合的离心式自灌泵CIP操作。LKH Prime还轻松泵送夹带空气的产品。一旦液体不再含有夹带空气，就留下了一个高效且安静的LKH泵，其中一个具有最有能力的离心泵。

For product applications, this pump features an air screw coupled with a highly efficient centrifugal impeller to effectively handle a variety of process media.

卫生设计包括由耐酸AISI制成的湿润部件（American Iron and Steel Institute）316L不锈钢，其他由AISI 304不锈钢制成的其他组件。LKH Prime是ehedg和3-a批准的卫生应用。

SP系列

TheSP系列是一种液体环泵Ampco将压缩室用来泵浦，并且仅使用离心力来密封具有液体的腔室。它很棒CIP return operations并用夹带的空气泵送产品。

SP系列泵在清空坦克和鼓中有效，可以处理剪切敏感产品由于其紧密的制造公差和独特的叶轮形状。

These pumps feature a 304 stainless steel adaptor and are in conformance with 3-A sanitary standards.

SLH双螺杆泵

婆罗门南SLH双螺杆泵is a self-priming positive displacement pump最适合涉及高粘度，高压或敏感材料的无菌过程和应用。该泵的变速特征适用于不同的操作条件。

Bornemann SLH双螺杆泵是ehedg和3-a批准的卫生应用。

C-Series

TheC-Series是一个具有Mouvex技术的偏心圆盘泵。This positive displacement pump uses its strong suction power and ability to run dry to gently and effectively move both liquid and dry products.

The C-Series is available in stainless steel models that carry 3-A approval and are designed to meet EHEDG specifications. This pump can be flushed andcleaned using CIP methods没有拆卸，可以用不受液体粘度的变化影响的输出泵泵两种高粘度产品。