【 Weak current College 】 definition and classification of water pump---Power By 【 China power house network 】

1. the definition of water pump
When someone asked what is a water pump, some people may say, water is a liquid suction or improve machine, people use pumps liquid from low to high. So to define water pump, on some occasions there are its rationality, hard to pump does play a role in this.
Water pump as a kind of General machinery, in modern society is widely used in various sectors of the national economy. In many applications the pump sector, and are not all used pumps liquid from low to high, is the use of the pump to the pressure of liquid increase, some even is the liquid from above sent to low, the purpose of the use. Therefore, the above definition is not comprehensive enough water pump, it does not inherently reveal pump function.
The pump should be defined in terms of: the pump is a conversion of mechanical energy, through the work of the campaign, plus the energy to be pumping liquid, making it the so-called energy increase. because the work of the pump categories vary, either solid or liquid or gas. Plus energy generally is the prime mover of mechanical energy, electricity may be other sources of energy. Need a mountain: modern pump in addition to the pump, you can also send other liquids, or even only with blocks of solid particles, such as mud pastes, slurry, ash, concrete, paper, cosmetics, etc. As most of the occasions pump is used for pumping water, therefore, traditionally called pump, you can also press the only media to address, such as pumps, slurry pumps, etc.


2. classification of water pump
There are many kinds of pumps, focus, it is not ' classification methods most basic classification according to the pump works, it is divided into the following three broad categories.

(1) the vane pump. It is the use of pump body working within the high-speed rotary movement of the liquid energy increases. Because its working body is made up of bend an impeller blades, therefore calls the vane pump. According to the different leaf shapes on the flow generated by forcing a different, and the flow direction of flow impeller is correspondingly different, and there are centrifugal vane pump (flow), axial-flow pumps (axial) and mixed-flow pump (diagonal).

(2) the positive displacement pump. It is through the pump work on liquid liquid's movement to squeeze the energy increases. Because it is working with alternating change liquid volume of space to squeeze, therefore calls volume pump. According to the press campaign in different ways, and it is divided into reciprocating pumps and Rotary pump, e.g. piston pump, piston pump, etc, the latter as the gear pump, pump, etc.

(3) other type pump. This type of pump is usually a means vane pumps and volumetric pump away some special pump. Belong to this category of soil to have a Jet pump, air-lift pump, water pump, etc. These pump characteristics is its working body is the liquid or gas, which utilizes high-speed movement of fluid for energy conversion, that is only to increase liquid energy.

Classification is man-made, in addition to the classification of the pump, you can have a different sorting method. For example: according to the pumping liquid increased energy properties of the different classification; according to pump the use of different classifications of energy; according to the pump uses different classification; and by pumping liquid nature of different sorting, etc, not in this list.

In the above three kinds of pumps, vane pumps with widely used, reliable operation, high efficiency, low cost, widely used in the production and all aspects of life, especially water and urban and rural and industrial supply, drainage, the vast majority is vane pump.