Centrifugal pump classification, it is based on different structural characteristics and divided. First, according to the number of working impeller to classify 1, single-stage pump: that is, only one impeller in the shaft. 2, multi-stage pump: that is, there are two or more than two impellers on the pump shaft, and the total lift of the pump is the sum of the lift produced by n impellers. Second, according to the classification of working pressure 1, low-pressure pump: pressure less than 100 meters of water column; 2, medium-pressure pump: pressure in the range of 100-650 meters of water; 3, high pressure pump: pressure higher than 650 meters of water column. Third, according to the classification of impeller water 1, one side of the water pump: also known as single suction pump, that is, only one inlet on the impeller; 2, bilateral water pump: also known as double suction pump, Side of a water inlet. Its flow rate is double that of a single suction pump, which can be approximated as two single-suction pump impellers placed back-to-back together. Fourth, according to the pump shell combined with the type of seam 1, the level of open pump: that is, through the axis of the horizontal plane with a joint seam. 2, the vertical joint pump: that is, the junction plane and the axis of the vertical. Fifth, according to the pump shaft position to classify 1, horizontal pump: pump shaft is located in horizontal position. 2, vertical pump: pump shaft is located in the vertical position. Six, according to the impeller out of the way to the pressure chamber out of the classification 1, spiral pump: water from the impeller, directly into the shape of a spiral pump shell. 2, guide vane pump: water from the impeller out into the guide vane set outside it, and then into the next level or into the outlet pipe. Usually we say that a pump is a multistage pump, which means how much the impeller. According to other structural features, it may be horizontal pump, vertical joint surface pumps, vane pumps, high pressure pumps, single-inlet pumps and so on. So according to different, the name is not the same. In addition, according to the use can also be classified, such as pumps, pumps, condensate pumps, ash pumps, circulating pumps and so on. Centrifugal Pump Classification Type Characteristics List Classification Type Centrifugal Pump Characteristics Aspiration Single suction pump Liquid flows into the impeller from one side and has axial force Double suction pump The liquid flows into the impeller from both sides without axial force and the pump Flow is almost double the single suction pump by the number of single-stage pump shaft only one impeller multi-stage pump the same pump shaft mounted on two or more impeller, the liquid flow through each stage of the impeller, the more the series, the head The higher the direction according to the pump shaft horizontal pump shaft horizontal vertical pump shaft vertical to the horizontal plane by the shell type segmented pump shell according to the vertical plane with the shaft part of the segment with a long bolt connection between the open Pump housing Divided volute casing in the plane passing through the axis of the shaft Centrifugal pump fitted with a helical pressure chamber, eg common end-suction cantilever centrifugal pump Turbine pump with vane pressure chamber Centrifugal pump special structure of the pump pipe as part of the pipeline, without changing the installation of submersible pump and pump made of motor immersed in water submerged pump immersed in the liquid pump impeller pump impeller and motor rotor together, and in the same Seal the case , Without the use of sealing structure, belonging to no leakage pump Magnetic pump in addition to the import and export, the pump body is fully closed, the pump and the motor is connected to each other using magnetically actuated suction pump self-priming pump pump start without irrigation high-speed pump by Speed ​​box to increase the speed of the pump shaft, the general speed up to 10000r / min or more, can also be said that part of the pump or tangential booster pump import and export of vertical tube pump at the same height above the upper and lower inner shell , The inner shell by the rotor, guide vanes and other components, the outer shell for the import diversion channel, the liquid inhalation from the bottom
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