Pump a wide range of different structures, classification methods are also many common classification methods are:
(1) according to the principle of pump work classification
1) vane pump: vane pump is the pump impeller high-speed rotation of the mechanical energy into liquid kinetic energy and pressure energy. As the impeller has a curved and twisted leaves, so called vane pump. According to the impeller structure on the different liquid forces, vane pumps can be divided into:
① centrifugal pump: centrifugal force generated by the impeller rotation and the formation of inertial pumping liquid pump.
② axial pump: impeller rotation generated by the axial thrust and pumping liquid pump. The flow rate is 0.3 ~ 65 m3 / s, the specific speed is 500 ~ 1600.
③ mixed-flow pump: impeller rotation both produce inertia centrifugal force and axial thrust and pumping liquid pump.
2) the volume pump: the use of periodic changes in the volume of the studio to transport liquid. A piston pump, piston pump, diaphragm pumps, gear pumps, screw pumps and so on.
3) Other types of pumps: a jet pump, water hammer pump, electromagnetic pump.
(2) Centrifugal pump classification Centrifugal pump by structure:
① By spindle orientation classification:
A. Horizontal pump: Spindle is placed horizontally;
B. Inclined pump: the main shaft and the horizontal plane at an angle;
C. Vertical pump: The spindle is placed perpendicular to the horizontal plane.
② According to the impeller suction mode classification:
A. Single suction pump: liquid from one side into the impeller, a single suction impeller
B. Double suction pump: the flow of liquid from both sides of the impeller, double suction impeller.
③ classification by impeller series:
A. Single-stage pump: the pump shaft is only equipped with an impeller;
B. Multi-stage pump: the same pump shaft is equipped with two or more impeller, the liquid flow through each stage in turn impeller.
(4) According to the pump housing subdivision way classification:
A. Segmented pump: the shell by the plane perpendicular to the spindle split;
B. Segmented pump: In the multi-stage pump, each section of the pump are separated;
C. In the open pump: The shell from the axis through the axis of the axis of the pump to separate, according to the orientation of the plane is divided into: horizontal open pump: the plane is the horizontal plane, the horizontal pump; Pump: the cut surface and the horizontal plane vertical, for the vertical pump; oblique open pump: the cut surface and the horizontal plane was a certain angle, for the inclined pump.
⑤ by pumping the form of classification:
A. Volute pump;
B. Double volute pump.
⑥ special structure of the pump:
A. Submersible pump: Pump and motor made into one, can sneak into the water work, the pump is generally single or multi-stage vertical centrifugal pump and axial flow pump.
B. Submersible pump: a single or multi-stage vertical centrifugal pump, motor, pump seat is located in the upper part of the liquid, the pump submerged in the liquid, the motor drive impeller through long drive shaft rotation. Mainly used in food and other industries.
C. Pipeline pump: Directly installed in the horizontal pipeline or vertical pipeline operation, the pump inlet and outlet 121 in a straight line, and in many cases the same diameter of the inlet and outlet for industrial systems, pressurized, air conditioning, circulating water transport And urban high-rise building water supply.
D. Shield pump: motor and pump as a whole, the use of motor and pump coaxial form, the motor between the outer and inner rotor shield separated, the pump in addition to import and export, the structure is completely closed to ensure that the pump does not leak when the liquid delivery.
E. Magnetic pump: the motor power through the magnetic coupling to the pump, in which the magnetic coupling of the inner rotor magnet driven impeller, magnetic coupling between the inner and outer magnets with isolation sleeve, and the shield pump is also no Sealed, non-leak pump type.
F self-priming pump: the first pump to fill a small amount of liquid, starting after the self-Sheung Shui pump, mostly horizontal centrifugal pumps, vortex pumps. Sprinkler application in the more.
G. High-speed pump: From the pump to divide the working principle of high-speed part of the flow tangent pump and high-speed centrifugal pump two structural forms. Speed from the way there are motor-driven direct-drive high-speed pump and the speed box speed box. Direct-drive motor speed 9000r / min in the following, by the gearbox to pump spindle speed, speed can be higher, but the maximum speed does not exceed 24000r / min.
Lt; / RTI & gt; Direct-coupled pump: the use of power shaft pump spindle, eliminating the need for pump suspension part.
I. Deep well pump: a multi-stage vertical centrifugal pump, used to take ground water equipment, motor, pump seat is located in the top of the wellhead, pump submerged in the water, the motor through the concentric long drive shaft impeller rotation. Groundwater for the water supply of urban and farmland irrigation purposes.
Gt; Water pump: by the turbine and pump by a certain way to form the water lifting machinery. To drive the hydraulic turbine rotation, as a driving force to drive water pump impeller rotation, so as to achieve the purpose of water.
(3) axial flow pump classification
1) According to the placement of the pump shaft classification:
① vertical axial flow pump: the main axis perpendicular to the horizontal plane placed;
② Horizontal axial flow pump: the main shaft is placed horizontally;
③ oblique axial flow pump: the spindle and the horizontal plane at an angle placed.
2) According to the impeller in the hub body on the fixed way classification
① fixed blade axial flow pump: blade angle fixed is not adjustable, and more for small axial pump;
② semi-adjustable blade axial flow pump: stop the blade can be removed to adjust the blade angle;
③ full-scale axial flow pump: By adjusting the mechanism, the pump can be adjusted in the operation of the blade angle.
(4) mixed-flow pump classification Mixed-flow pump with vortex-type mixed-flow pump and guide vane mixed flow pump two.
1) volute mixed flow pump: shape and structure of the single-stage centrifugal pump with a single-suction similar;
2) guide vane mixed flow pump: shape and structure similar to the axial flow pump.
(5) volumetric pump classification Positive displacement pump according to the working element for reciprocating motion or rotary motion can be divided into two types of reciprocating pump and rotary pump.
Through the piston, plunger working element for reciprocating displacement pump called the reciprocating pump.
A pump that generates a volume change in the working chamber by the rotation of a working element such as a gear, a screw, an impeller rotor, or a vane, etc., causes the liquid to be continuously transferred from the suction side to the discharge side. Such as gear pump, screw pump, liquid ring pump, flexible impeller pump, rotary piston pump, radial or axial rotary piston pump.
(1) according to the principle of pump work classification
1) vane pump: vane pump is the pump impeller high-speed rotation of the mechanical energy into liquid kinetic energy and pressure energy. As the impeller has a curved and twisted leaves, so called vane pump. According to the impeller structure on the different liquid forces, vane pumps can be divided into:
① centrifugal pump: centrifugal force generated by the impeller rotation and the formation of inertial pumping liquid pump.
② axial pump: impeller rotation generated by the axial thrust and pumping liquid pump. The flow rate is 0.3 ~ 65 m3 / s, the specific speed is 500 ~ 1600.
③ mixed-flow pump: impeller rotation both produce inertia centrifugal force and axial thrust and pumping liquid pump.
2) the volume pump: the use of periodic changes in the volume of the studio to transport liquid. A piston pump, piston pump, diaphragm pumps, gear pumps, screw pumps and so on.
3) Other types of pumps: a jet pump, water hammer pump, electromagnetic pump.
(2) Centrifugal pump classification Centrifugal pump by structure:
① By spindle orientation classification:
A. Horizontal pump: Spindle is placed horizontally;
B. Inclined pump: the main shaft and the horizontal plane at an angle;
C. Vertical pump: The spindle is placed perpendicular to the horizontal plane.
② According to the impeller suction mode classification:
A. Single suction pump: liquid from one side into the impeller, a single suction impeller
B. Double suction pump: the flow of liquid from both sides of the impeller, double suction impeller.
③ classification by impeller series:
A. Single-stage pump: the pump shaft is only equipped with an impeller;
B. Multi-stage pump: the same pump shaft is equipped with two or more impeller, the liquid flow through each stage in turn impeller.
(4) According to the pump housing subdivision way classification:
A. Segmented pump: the shell by the plane perpendicular to the spindle split;
B. Segmented pump: In the multi-stage pump, each section of the pump are separated;
C. In the open pump: The shell from the axis through the axis of the axis of the pump to separate, according to the orientation of the plane is divided into: horizontal open pump: the plane is the horizontal plane, the horizontal pump; Pump: the cut surface and the horizontal plane vertical, for the vertical pump; oblique open pump: the cut surface and the horizontal plane was a certain angle, for the inclined pump.
⑤ by pumping the form of classification:
A. Volute pump;
B. Double volute pump.
⑥ special structure of the pump:
A. Submersible pump: Pump and motor made into one, can sneak into the water work, the pump is generally single or multi-stage vertical centrifugal pump and axial flow pump.
B. Submersible pump: a single or multi-stage vertical centrifugal pump, motor, pump seat is located in the upper part of the liquid, the pump submerged in the liquid, the motor drive impeller through long drive shaft rotation. Mainly used in food and other industries.
C. Pipeline pump: Directly installed in the horizontal pipeline or vertical pipeline operation, the pump inlet and outlet 121 in a straight line, and in many cases the same diameter of the inlet and outlet for industrial systems, pressurized, air conditioning, circulating water transport And urban high-rise building water supply.
D. Shield pump: motor and pump as a whole, the use of motor and pump coaxial form, the motor between the outer and inner rotor shield separated, the pump in addition to import and export, the structure is completely closed to ensure that the pump does not leak when the liquid delivery.
E. Magnetic pump: the motor power through the magnetic coupling to the pump, in which the magnetic coupling of the inner rotor magnet driven impeller, magnetic coupling between the inner and outer magnets with isolation sleeve, and the shield pump is also no Sealed, non-leak pump type.
F self-priming pump: the first pump to fill a small amount of liquid, starting after the self-Sheung Shui pump, mostly horizontal centrifugal pumps, vortex pumps. Sprinkler application in the more.
G. High-speed pump: From the pump to divide the working principle of high-speed part of the flow tangent pump and high-speed centrifugal pump two structural forms. Speed from the way there are motor-driven direct-drive high-speed pump and the speed box speed box. Direct-drive motor speed 9000r / min in the following, by the gearbox to pump spindle speed, speed can be higher, but the maximum speed does not exceed 24000r / min.
Lt; / RTI & gt; Direct-coupled pump: the use of power shaft pump spindle, eliminating the need for pump suspension part.
I. Deep well pump: a multi-stage vertical centrifugal pump, used to take ground water equipment, motor, pump seat is located in the top of the wellhead, pump submerged in the water, the motor through the concentric long drive shaft impeller rotation. Groundwater for the water supply of urban and farmland irrigation purposes.
Gt; Water pump: by the turbine and pump by a certain way to form the water lifting machinery. To drive the hydraulic turbine rotation, as a driving force to drive water pump impeller rotation, so as to achieve the purpose of water.
(3) axial flow pump classification
1) According to the placement of the pump shaft classification:
① vertical axial flow pump: the main axis perpendicular to the horizontal plane placed;
② Horizontal axial flow pump: the main shaft is placed horizontally;
③ oblique axial flow pump: the spindle and the horizontal plane at an angle placed.
2) According to the impeller in the hub body on the fixed way classification
① fixed blade axial flow pump: blade angle fixed is not adjustable, and more for small axial pump;
② semi-adjustable blade axial flow pump: stop the blade can be removed to adjust the blade angle;
③ full-scale axial flow pump: By adjusting the mechanism, the pump can be adjusted in the operation of the blade angle.
(4) mixed-flow pump classification Mixed-flow pump with vortex-type mixed-flow pump and guide vane mixed flow pump two.
1) volute mixed flow pump: shape and structure of the single-stage centrifugal pump with a single-suction similar;
2) guide vane mixed flow pump: shape and structure similar to the axial flow pump.
(5) volumetric pump classification Positive displacement pump according to the working element for reciprocating motion or rotary motion can be divided into two types of reciprocating pump and rotary pump.
Through the piston, plunger working element for reciprocating displacement pump called the reciprocating pump.
A pump that generates a volume change in the working chamber by the rotation of a working element such as a gear, a screw, an impeller rotor, or a vane, etc., causes the liquid to be continuously transferred from the suction side to the discharge side. Such as gear pump, screw pump, liquid ring pump, flexible impeller pump, rotary piston pump, radial or axial rotary piston pump.
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Keywords:Pump classification, pump type, pump type
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