Booster pump generally refers to the mechanical device used to transport liquid with greater pressure so as to facilitate flow or transport to higher and farther places. Since Booster pump needs to use pipelines to transport liquid, Booster pump is also called pipeline Booster pump. The Booster pump can increase the pressure of the delivered liquid, so it is also called the booster pump. However, Booster pump is the most popular name among the people.

增压泵是一个统称或别称，通常是以离心泵、管道泵、多级泵、清水泵、自吸泵、潜水泵、旋涡泵等冠名，这些不同名词的泵都能用于给液体或类水介质增压，差别在于产品结构或外观样式不一样。共同点在于这几种不同叫法的泵都属于离心泵。

Booster pump is a general name or another name, usually referred to as centrifugal pump, pipeline pump, multistage pump, clean water pump, self-priming pump, Submersible pump, vortex pump, etc. These pumps with different terms can be used to pressurize liquid or water like media, the difference is that the product structure or appearance style is different. The commonality lies in the fact that these pumps with different names belong to centrifugal pumps.

关于增压泵及选型计算

About Booster pump and Selection Calculation

各种不不同样式的增压泵实拍图，点击图片查看众多增压泵的产品

Real pictures of Booster pump in different styles. Click the pictures to view many Booster pump products

分类及属性

Classification and attributes

按照材质分类：铸铁和不锈钢，铸铁泵成本低廉但容易锈蚀不干净;不锈钢泵耐腐蚀耐锈蚀但成本相对高。

According to material classification: cast iron and stainless steel, cast iron pumps have low cost but are prone to rusting and unclean; Stainless steel pumps are corrosion-resistant and corrosion-resistant, but their cost is relatively high.

按照结构分类：立式和卧式，立式泵较高但占地面积小，卧式泵较低但占地面积大；单级和多级，单级泵扬程较低且通常可以做到大流量，多级泵可以扬程高压力大。

According to structural classification: vertical and horizontal, vertical pumps have a higher but smaller footprint, while horizontal pumps have a lower but larger footprint; Single stage and multi-stage, single stage pumps have low head and can usually achieve high flow rates, while multi-stage pumps can have high head and high pressure.

按照性质分类：清水和污水，清水泵只适合输送不含任何杂质的液体，污水泵可以输送带一定杂质的液体。

Classified by nature: clean water and sewage. Clean water pumps are only suitable for conveying liquids without any impurities, while sewage pumps can transport liquids with certain impurities.

工作原理

operational principle

上面介绍过，诸如管道泵、多级泵、清水泵、自吸泵、潜水泵、旋涡泵等类型的增压泵都是基于离心泵的工作原理制造的。那么增压泵的工作原理也等同离心泵工作原理。主要分为增压和吸水原理。

As mentioned above, Booster pump such as pipeline pumps, multistage pumps, clean water pumps, self-priming pumps, Submersible pump, vortex pumps, etc. are all manufactured based on the working principle of centrifugal pumps. Then the working principle of Booster pump is the same as that of centrifugal pump. Mainly divided into pressure boosting and water absorption principles.

增压原理：离心泵是依靠高速旋转叶轮(一般有2900r/min和1450r/min两个转速的)将机械能转换为液体的压力能。液体从离心泵的吸入泵腔流向出口的过程中，其速度能和压力能都得到增加，被叶轮排出的液体经过压出室，大部分速度能转换成压力能。

Boosting principle: Centrifugal pumps rely on high-speed rotating impellers (usually at speeds of 2900r/min and 1450r/min) to convert mechanical energy into liquid pressure energy. During the process of liquid flowing from the suction chamber of a centrifugal pump to the outlet, its velocity energy and pressure energy are both increased. The liquid discharged by the impeller passes through the pressure chamber, and most of the velocity energy is converted into pressure energy.

吸水原理：我们知道，离心泵要正常运行，次必须灌满泵腔和吸水管路，并安装底阀(防止灌入的水流出去)，否则离心泵无法正常增压或者不自动吸水。灌水或灌其他被抽液体的作用是使液体充满泵腔，当离心泵启动的一瞬间，在离心力的作用下，泵腔里面禁止的液体立即获得压力能，一旦打开出水阀门，泵腔里面的液体就会立即流到未经增压的管路低压区，泵腔里面原有的水被甩出排空后，泵腔位置会形成一个类似接近真空的区域，在大气压的作用下，外面未进入泵腔内的液体就会被压入到真空低压区域，只要离心泵还在运行，这些液体就回被持续的压到低压区，往复循环，离心泵便达到了吸水增压的目的。

Water absorption principle: We know that in order for a centrifugal pump to operate normally, the pump chamber and suction pipeline must be filled up for the first time, and a bottom valve must be installed (to prevent the injected water from flowing out), otherwise the centrifugal pump will not be able to pressurize normally or automatically absorb water. The function of filling water or other pumped liquids is to fill the pump chamber with liquid. At the moment when the centrifugal pump starts, under the action of centrifugal force, the prohibited liquid in the pump chamber immediately obtains pressure energy. Once the outlet valve is opened, the liquid in the pump chamber will immediately flow to the low-pressure area of the unpressurized pipeline. After the original water in the pump chamber is thrown out and emptied, the position of the pump chamber will form an area similar to a vacuum, Under the action of atmospheric pressure, the liquid outside the pump chamber that has not entered will be pressed into the vacuum low-pressure area. As long as the centrifugal pump is still running, these liquids will continue to be pressed into the low-pressure area, circulating back and forth, and the centrifugal pump will achieve the purpose of suction and pressurization.

因此，我们不要以为只有产品名称中带自吸泵三个字的泵才能吸水，事实上只要是离心泵结构的泵都能吸水，也就是说离心泵都具备吸程，吸水高度一般按照H=10.33-必须汽蚀余量-0.5余量这样计算。自吸泵区别与普通离心泵在于自吸泵的吸水口较高，因为这样可以确保泵腔储存更多水，也利于下次启动直接产生较大真空实现吸水。

Therefore, we should not assume that only pumps with the three words' self priming pump 'in the product name can absorb water. In fact, any pump with a centrifugal pump structure can absorb water, which means that centrifugal pumps have a suction lift. The suction height is generally calculated based on H=10.33- the required cavitation margin -0.5 safety margin. The difference between a professional self priming pump and a regular centrifugal pump is that the suction port of the self priming pump is higher, because this can ensure that the pump chamber stores more water and also facilitate the direct generation of a larger vacuum during the next startup to achieve water absorption.