24 hours Hotline: 0086-371-63335262
Free Call
NEWS

How to choose between the end suction pump centrifugal pump and the open pump?

2020-07-15
The end suction pump is a kind of centrifugal pump, which uses the rotation of the impeller to make the water centrifugal move to work. Before the pump is started, the pump casing and the suction pipe must be filled with water, and then the motor is started, so that the pump shaft drives the impeller and water to perform high-speed rotational movement. The centrifugal motion of the water is thrown to the outer edge of the impeller and flows into the pump through the flow path of the volute casing. Pipeline.

When choosing to buy a water pump, do you choose an end-suction pump or a mid-open pump? Let us give you a detailed answer to this question today. Let us know through the article.

The mid-open pump is also called a single-stage double-suction centrifugal pump. It is a large-flow pump type. It is mainly used for water supply in power plants, power stations and other occasions that require large water delivery; end-suction pump refers to double suction Corresponding to the single suction pump, the two are different on the impeller, and are mostly used in building water supply, air conditioning systems and other occasions.

Understand from the way of naming its water pump, the mid-open pump is fed from both ends of the impeller, and the end suction pump is fed from one end of the impeller, so this is one of their differences.

Double suction is mainly used in workplaces with large flow and low head. When the flow rate of the pump is greater than or equal to 280m3/h, the caliber reaches more than 200m2. If a single-suction pump is used, the rotation speed needs to be around 1450rpm to meet the Zui low suction requirement. However, if the double-suction pump is used under the same conditions, not only the size and weight of the pump are greatly reduced, but also the speed of the impeller can be increased accordingly, the volumetric efficiency is increased, and the reliability of the equipment is further improved.

End suction pump can also be called single suction pump, the flow of single suction pump is small. In the case of the same flow rate, the volume of the single suction pump is smaller, but the axial force is large, and the bearing burden is greater. The cost of a single suction pump is relatively low and it is widely used, but it is not as good as a double suction pump in many practical aspects. If the inlet pressure is high, it can be solved by using double suction wheels. Because the axial force balance of the impeller of the single suction pump can not be solved well is a big problem.