Single stage centrifugal pumps, double suction centrifugal pump and multistage centrifugal pump how much do you know?

Centrifugal pump type, variety specification and their conversion product is more in the farm pumps. According to how much water into the way of the impeller, the impeller and the pump itself can be self-priming and form a complete set of power and power varieties, such as size, centrifugal pumps are single-stage single-suction centrifugal pump, single stage double suction centrifugal pump, multistage centrifugal pump, self-priming centrifugal pump, motor and diesel engine pump, etc. A, single stage centrifugal pumps are single-stage single-suction centrifugal pump with the old pump models have BA, B type single-stage single-suction centrifugal pump, in the 80 s, according to the actual circumstance of international standards and drainage and irrigation machinery in our country, to upgrade the centrifugal pump products development, and produces the IB, IQ single-stage centrifugal pump series products, has been listed as a national professional standards and industry standards. Single-stage single-suction centrifugal pump, water by axial single into the impeller, the impeller is only one, so called single-stage single-suction centrifugal pump. Its characteristic is that compared with the mixed flow pump, axial flow, high head, small flow rate, simple structure, easy to use. IQ type single-stage single-suction centrifugal pump, Also called light small centrifugal pump) Is targeted at China's national conditions and meet the users of simple structure, light weight, low price, good performance and convenient requirements and design, a total of 84 kinds of products, points to three derived series, 413 specifications. 1, the performance of pump diameter range 50-200 mm, traffic 12. 5 ~ 400 cubic meters per head 8 ~ 125 meters, power for diesel engine straight league, belt drive, motor straight league, the power of 1. 1 ~ 110 kw, and speed of 1450 ~ 2900 r/min. 2, structure light small axial suction centrifugal pump for single-stage single-suction suspension type centrifugal pump, the pump body after open the door, export is located in the center, back cover for the embedded type, bearing body with the pump body direct connection, below the foot is located in the pump body, pump bearing lubrication in butter, shaft seal is divided into soft packing, mechanical seal, rubber oil seal. Impeller are closed, the transmission is divided into two kinds of coupling drive and belt drive. Steering pump impeller: from the pump inlet direction, wheel steering is clockwise, when the pump and diesel engine straight league transmission, counterclockwise. discharge device manual water pump, can remove the bottom valve, reduce the hydraulic losses, and enables the self-priming pump. Second, double suction centrifugal pump impeller water on both sides of it came from a double suction centrifugal pump, pump cover and pump body horizontal seam is adopted to assembly, also known as horizontal split-case centrifugal pump. Compared with single-stage single-suction centrifugal pump, high efficiency, large flow, high lift. But the volume is big, more heavy, commonly used in fixed job. Medium suitable for hilly, plateau area of irrigation area, is also applicable to factories, mines, city water supply and drainage, etc. Double suction centrifugal pump with S, Sh, SA, SLA several models, the difference between S and Sh type is that, when looking from the drive S type pump is clockwise, Sh type for counterclockwise. SLB model for vertical split type double suction water pump. S type pump flow performance range 160 ~ 18000 cubic meters per head 12 ~ 125 meters, water inlet of 150 ~ 1400 mm in diameter, rotational speed, 2950, 1450, 970, 730, 585, 485, 360 revolutions per minute. Three, multistage centrifugal pump compared with the single pump, the difference is that a multi-stage pump, there are more than two impeller can piecewise multiple classes to water absorption and water pressure, so as to raise the water to the high position, head depending on the need to increase or decrease the pump impeller series. Multistage pumps are mainly used in mines, factories and urban water supply, drainage, irrigation with little, applies only to high head, small flow high mountain water to solve the difficulty of drinking water. Multistage high heart pump have vertical and horizontal two types, the main models are D, DL multistage centrifugal pump, DW, DWL small multistage centrifugal pump. 1, D type multistage pump flow 6 performance range. 3 ~ 720 cubic meters per head 16 ~ 600 meters, water diameter: 50, 75, 100, 125, 150, 200 mm, 50 ~ 125 mm type pump for high speed 2950 r/min, 150 ~ 200 mm type pump rotating speed is 1480 RPM. 2, d-type multi-stage centrifugal pump is horizontal structure, multi-level ( 2 ~ 12) - For single suction, impeller, pump body is segmented. When heads for the double suction impeller, expressed with DS, when also stipulates that there are two kinds of speed, low speed with DA said, multistage centrifugal pump for boiler feed water, expressed in DG.
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