The working principle of double suction middle open pump

To put it simply:

The inlet liquid of the double suction pump enters the central area of the impeller at the same time, the high-speed rotating impeller is thrown out by the centrifugal force, and the center of the impeller forms a low pressure area, and the inlet liquid flows continuously to the low pressure area under the action of atmospheric pressure, that is, the circulation process after entering the center of the impeller and being thrown out.

To be specific:

Double suction pump belongs to the centrifugal pump, its working principle is the same as the centrifugal pump, the driving machine (motor) through the volute type open pump pump shaft to drive the impeller rotation, the impeller blade to drive the liquid to rotate together, thus generating centrifugal force, under the action of centrifugal force, the liquid along the blade runner is thrown to the impeller outlet, the liquid through the volute collection into the discharge pipe. The liquid in the volute type open pump obtains energy from the impeller,  so that the pressure energy and speed energy are increased, and rely on this energy to transport the liquid to the work site. When one impeller cannot make the liquid obtain enough energy, multiple impellers can be connected in series or parallel to work on the fluid.

Double suction pump in the liquid is thrown to the impeller outlet at the same time, the impeller inlet center formed a low pressure, in the suction tank and the impeller center of the liquid between the pressure difference, the liquid in the suction tank under the action of this pressure difference, continuously through the suction pipe and pump suction chamber into the impeller. In this way, the impeller in the rotation process, one side constantly inhales the liquid,  and constantly to the suction of the liquid with a certain energy, the liquid is discharged, so that the volute type centrifugal pump continuously work.

The impeller is installed in the pump housing and fastened to the pump shaft, which is directly driven by the motor. A liquid suction pipe is connected with the middle of the pump housing. The liquid enters the pump through the bottom valve and suction pipe. The liquid discharge outlet on the pump housing is connected with the discharge pipe. When the pump speed is constant, the pressure head and flow rate are related to the impeller diameter.

The structure of double suction middle open pump.

Related parts: shaft, impeller, clamp ring, seal ring, mechanical seal sleeve, seal body, mechanical seal, seal gland, water retaining ring, shaft sleeve, bearing body, bearing stop ring, stop washer, pump cover, female, dowel, bearing oil seal and other parts.

Double suction medium open pump application range:

It mainly includes liquid transportation/waterworks, industrial water supply/municipal water supply, construction/ships, power stations/power plants and other fields

Double suction open pump performance and advantages:

1, high efficiency, up to 97%;

2, simple installation, easy maintenance;

3, stable structure, suitable for long-term operation;

4, long service life.