Pump variety, different structure, classification of many methods, classification methods are common:

(1) according to the classification of the pump working principle

1) vane pump: the pump impeller vane pump is in high speed rotating mechanical energy into kinetic energy and pressure energy of liquid. Because the blade bending and twisting of the impeller, so that the vane pump. According to the different structure of impeller on the liquid force, vane pump can be divided into:

The centrifugal pump: inertial centrifugal force by the rotating impeller and the pump pumping the liquid form.

The axial flow pump: axial thrust and pumping liquid pump impeller rotation. Belongs to the low lift, large flow pump type, performance scope: lift 1-12m; flow rate 0.3-65m3/s, than the number 500-1600.

The mixed flow pump impeller: produces both inertial centrifugal force and axial thrust and pumping liquid pump.

2) volume pump: to transport the liquid volume changes periodically by studio. A piston pump, plunger pump, diaphragm pump, gear pump, screw pump.

3) other types of pump: jet pumps, water hammer pump, electromagnetic pump.

(2) the classification of centrifugal pump

Classification according to the spindle orientation:

A. horizontal pump: axis horizontal;

B. slantwise pumps: spindle and the horizontal plane form a certain angle;

C. vertical pump: spindle perpendicular to the horizontal plane placed.

According to the classification of inhalation of impeller:

A. single suction pump: the liquid from the side into the impeller, single suction impeller;

B. double suction pump: from both sides of the liquid into the impeller, double suction impeller.

Classification by impeller series:

A. single stage pump: the pump shaft installed only one impeller;

B. multistage pump: a pump shaft is provided with two or more than two impeller, the liquid sequentially through each stage impeller.

Classification according to the pump housing subdivision:

A. sectional pump: housing according to the plane section and spindle vertical division;

B. segmental type pump: in sectional multi-stage pump, each pump body are separated;

Open pump C.: Housing apart from the plane through the pump axis line, according to the split plane range is divided into: open the pump level: the subdivision surface is horizontal, vertical to horizontal pump; centrifugal pump: subdivision surface perpendicular to the horizontal plane, vertical pumps; oblique impeller pumps: split plane and the horizontal plane form a certain angle, oblique type pump.

According to the classification of the form of the pump body:

A. volute pump;

B. double volute pump.

The special structure of the pump:

A. submersible pump: pump and motor are made into a whole, can dive into the water, the pump body is generally a single stage or multi-stage vertical centrifugal pump and axial flow pump.

B. liquid pump: a single-stage or multi-stage vertical centrifugal pump, motor, pump base is located in the upper part of the pump body is submerged in the liquid, the liquid, the motor drives the impeller to rotate through the long drive shaft. Mainly used in food industry.

C. pipeline pump: direct installed in horizontal pipe or vertical pipeline, pump inlet and outlet in a straight line, and the import and export of the same caliber as in most cases, suitable for industrial system booster, highrise building air conditioning circulating water transportation and city water supply.

D. shielding pump: motor and pump into one, the motor and pump coaxial form, separated by the shielding sleeve between the inner and outer rotor motor, pump, in addition to the import and export, in the structure completely closed, to ensure the pump delivery of liquid does not leak.

E. magnetic pump: motor power is transferred to the pump by the magnetic coupling, the inner rotor magnet magnetic coupling drive impeller, the isolation sleeve using magnetic coupling between inside and outside the magnet, and shield pump is no seal, no leakage of pump type.

F. self-priming pump: for the first time to pump into the small amount of liquid, after starting to water pump, for horizontal centrifugal pump, vortex pump etc.. Application in irrigation in.

G. high speed pump from the pump working principle: to have high-speed part flow tangent pump and centrifugal pump two structure forms. From the transmission way has high speed pump by motor direct drive type high speed pump and gearbox. Motor direct drive type speed below 900r/min, the transmission pump spindle speed, speed can be much higher, but the maximum speed of not more than 24000r/min.

H. monoblock pump: pump using the power machine spindle to do, save pump suspension parts.

I. deep well pump: a multi-stage vertical centrifugal pump, used to take water equipment, motor, pump base is located in the upper part of the pump body is submerged in the wellhead, well water, motor through the concentric with the pipes of the long shaft to drive the impeller rotation. The city water supply and irrigation to groundwater as.

J. hydraulic pump: water lifting machinery composed of turbine and pump in a certain way. In order to head drives the turbine to rotate, as the driving force, driving water pump impeller, so as to achieve the purpose of water.

(3) the axial flow pump classification

1) according to the classification of mounted pump shaft:

The vertical axial flow pump: spindle perpendicular to the horizontal plane placed;

The horizontal axial flow pump: axis horizontal;

The oblique axial flow pump: spindle and the horizontal plane form a certain angle.

2) according to the classification of the fixed mode of impeller in the hub body.

The fixed blade propeller pump: blade angle fixed is not adjustable, used for small axial flow pump;

The semi adjustable blade axial flow pump: stop removable impeller adjusting blade angle;

The fully adjustable axial-flow pump: the pump can be adjusted by the adjusting mechanism, the blade angle in operation;

(4) classification of mixed flow pump

Mixed flow pump with volute mixed flow pump impeller and guide vane mixed flow pump two.

1) the volute mixed flow pump: the shape and structure mode and single stage single suction centrifugal pump similar;

2) guide vane mixed flow pump: the shape and structure and axial flow pump similar.

(5) classification of volume pump

Volume type pump according to working components for reciprocating motion and rotary motion into reciprocating pump and rotary pump two.

Through the piston, piston job components for reciprocating motion of the positive displacement pump called a reciprocating pump. The volume change of the gear, screw, impeller rotor or slider, rotation of the element to produce working cavity so that the liquid continuously from the suction side to the discharge side of the pump to transfer known as the rotary pump. As the gear pump, screw pump, liquid ring pumps, flexible impeller pump, rotary piston pumps, radial or axial rotary plunger pump.