What kind of pumps are there _ pump selection method

It put the motor or diesel engine and other mechanical energy conversion engine is passed to the medium to be delivered, to increase the energy of the medium, so as to achieve the goal of ascension or medium. Water pump belongs to a kind of general machinery, now is widely used in all walks of life, as long as there is media need to flow pressure will use all kinds of pumps, in occupies very important position in national economic sectors. The earliest pump is mainly used to flush, so people call it the water pump. According to purpose also there are many kinds of names such as the drainage and irrigation water pump we also call it or farm pumps, agricultural pumps according to the characteristics of the pump has a variety of names, such as running into water pump called submersible pump, on the shore, called up out of the ground water pump self-priming pump.

2, what kind of pumps are there

the type of pump is more, different structure, the pump according to the working principle of the water pump can be divided into the following three categories. Vane pump

vane pump is to rely on the water pump in the high-speed rotating impeller of engine's mechanical energy conversion by pumping water. Fall into this category

the water water pump with centrifugal pump, axial flow pump, mixed-flow pump, etc.

centrifugal pump according to the basic structure, type of features can be divided into single-stage single-suction centrifugal pump, the single stage double suction centrifugal pump, multistage centrifugal pump, and

self-priming centrifugal pump, etc.

according to the structure is divided into vertical axial flow blood pump, horizontal pumps and pump, according to the adjustable blade is divided into fixed, regulate and adjust the axial flow pump.

mixed flow pump according to the structure is divided into volute mixed flow pump with guide vane mixed flow pump.

vane pump according to the using range and different structure characteristics, and long axis well pumps, submersible pumps, turbine pump and so on. Is divided into shallow Wells long long axis of the shaft well pump, deep well

well pump and ultra deep well pump shaft. Submersible pumps in the pump body together with the motor installed one dive the water pump, according to the using occasion

, is divided into operation submersible pumps, deep well submersible pump and extraction of surface water submersible pumps. Hydraulic vane pump with a hydraulic turbine

powered pumps work, according to the use of water head and structure features can be divided into low, medium and high water head axial flow turbine pump and low, medium and high head Francis turbine pump.

2。 Positive displacement pumps

product conveying liquid pump by studio volume periodic change. Positive displacement pumps according to the studio volume change way is divided into both reciprocating and rotary pump. Reciprocating pump is to use a plunger in the pump cylinder for reciprocating motion to change the studio volume for conveying fluid. Rotary pump rotor is used as the rotary motion is conveying fluid.

3。 Other types of pumps

other type pump refer to other than the vane pump and the positive displacement pump water pump. Jet pump in irrigation and drainage pumping station, water hammer pump, gas

l pump ( Also known as air pumping machine) , screw pump, etc. Among them, in addition to the screw pump is the use of spiral propulsion principle to improve liquid

potential energy, the other kinds of water pump working fluid transmission energy is used to transport the liquid.

vane pump includes high from low head to head, from big traffic to a wide range of small flow. In the farmland drainage, irrigation

with the most is a vane pump. When, after the confirmation of design flow and design head pump selection can be carried out. ( A) selection principle of (1) under the design head, pump station provides can satisfy the requirement of irrigation and drainage and water flow rate of chilled water. (2) the water pump in the long run, the annual average of high efficiency and low operating cost. (3) according to the selected pump website building, civil engineering equipment and the most province investment. (4) easy to installation, operation, maintenance, operation and management. (5) choose seriation, standardization, generalization and upgrade of new products, products eliminated selection of avoid by all means. （ 2) selection methods and steps according to the design of head, the pump products samples or brochure, use water pump performance tables or preliminary selected head pump series spectrum diagram, conform to the requirements and several kinds of pump flow range type, drainage, irrigation, water supply and according to the design flow and the rated flow of each type pump, calculate each pump type for the Numbers. (2) according to the preliminary selected pumps, determine the diameter and arrangement of pipeline, and the water pump head in maximum head, the design and the minimum head point, point located in the pump area, head and flow rate can meet the needs of the users, cavitation does not happen, the engine is not overloaded. If do not conform to the requirement, can choose other type pump or made adjustment measures. (3) according to the principle of selection of various solutions to conduct a comprehensive technical and economic comparison, choose the technically feasible and economically reasonable pump type and the Numbers.

related articles: circulating pump models

this paper keywords: there are several kinds of pumps, water pumps have what kind of, pump selection method

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