Classification of Vane Pumps

Figure 1: Vane pumps.

The pump that uses the impeller with blades to rotate at high speed to convert mechanical energy into kinetic energy and pressure energy of liquid is called vane pump. According to the direction of the pumped liquid flowing out of the impeller, it can be divided into centrifugal type, axial flow type and mixed flow type.

Vane pump is widely used in engineering practice because of its high efficiency, convenient starting, reliable performance, and wide application range of flow and head.

They can be classified according to the following characteristics.

1. According to The Direction of The Main Shaft

1) Horizontal vane pump: the main shaft is placed horizontally.
2) Vertical vane pump: the main shaft is placed vertically.
3) Inclined vane pump. The main shaft is inclined.

Figure 2: Horizontal vane pump.

2. According to Impeller Type

1) Centrifugal vane pump: equipped with centrifugal impeller.
2) Mixed flow vane pump: equipped with mixed flow impeller.
3) Axial flow vane pump: equipped with axial flow impeller.

Figure 3: Centrifugal vane pump.

3. According to The Inhalation Method

1) Single suction vane pump: equipped with single suction impeller.
2) Double suction vane pump: equipped with double suction impeller.

4. According to Stages

1) Single stage vane pump: equipped with an impeller.
2) Multi stage vane pump: two or more impellers are installed on the same shaft.

5. According to The Blade Installation Method

1) Adjustable vane pump: the setting angle of impeller blades can be adjusted by mechanism:
2) Fixed vane pump: the setting angle of impeller blades is fixed.

Figure 4: Adjustable vane pump.

6. According to The Way of Shell Division

1) Segmented vane pump: in the segmented structure, the shell of each stage is separated.
2) Split vane pump: the shell is on the plane passing through the shaft centerline.

7. According to The Pump Form

1) Volute vane pump: the impeller discharge side has a shell with a volute chamber.
2) Double volute vane pump: a shell with double volute chambers on the discharge side of the impeller.
3) Bucket vane pump: a cylindrical pressure shell is installed outside the inner shell.
4) Double shell vane pump: refers to the double shell pump other than the barrel bag type.

Figure 5: Volute vane pump.

8. According to The Support Mode of The Pump Body

1) Suspension vane pump: there are pump feet under the pump body, which are fixed on the bottom base, and the bearing body is suspended at one end.
2) Bracket vane pump: the lower part of the bearing body is fixed on the base, and the pump body is lifted by the bearing body and suspended at one end.
3) Center supported vane pump: both sides of the pump body are fixed on the base on the horizontal plane passing through the axis.

9. Vane Pump with Special Structure

1) Submersible vane pump: the motor driving device is connected with the pump and placed in the water. It is electromechanical, simple in structure and convenient to use.
2) Tubular vane pump: the pump body is equipped with motor and other driving devices.
3) Shielded vane pump: the pump is directly connected with the motor (sharing a shaft), and a shielding sleeve is installed inside the motor stator to prevent liquid from entering the stator.
4) Magnetic vane pump: the motor drives the outer magnetic steel to rotate, and the inner magnetic steel connected with the pump impeller rotates through magnetic induction. There is an isolation sleeve between the inner and outer magnetic steel to completely prevent liquid leakage.
5) Self priming vane pump: a pump that does not need to be filled with water when the pump is started again.
6) Pipeline vane pump: as a part of the pipeline, it can be installed without special changes to the pipeline.

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