Using the vane pump
Water - this is one of the most important substances on the planet, and Ms.situ person who actually provides life itself. In our bodies according to different estimates of water it contains up to three-quarters of the total body weight. Naturally it is in a different form, being a structural component of tissues and cells. Also, of course, that the water is consumed in the energy needs of the body and needssmiling in the same permanent or regular recharge. According to the recommendations of various nutritionists, people a day should drink up to two liters of water, but also because you need to prepare food, bathe, make damp cleaning the house, etc. It's one thing if it is a private one-storey house and a well or a natural pond nearby where water can collect. Whatthen do the residents of big cities in their apartment located in a high-rise skyscrapers?
According to the laws of physics, in particular the law of universal gravity, water does not run up, unless of course it does not help in this. So here's assistant that creates a pipeline sufficient excess pressure to deliver indy to the required height, is the pump.
What is a vane pump?
The most commonly used in the type of water pump is a centrifugal pump is dynamic. For such a pump is characterized by a constant volume working chamber in which the central shaft rotates the rotor blade. These pumps water is pumped by pressure difference in the suction and supply lines.
This approach is optimal for the water, but if it is necessary to pump the liquid or zhydkie technical substance with a higher viscosity - is necessary to use a completely different principle of operation of hydraulic machines. For substances such aschocolate, condensed milk, milk, resins, etc. the best option is the use of hydraulic ( pumps ) surround the principle of action - plate or slide pumps span >. Unlike dynamic pumps ,volume work is not due to the dynamics and due to changes in the volume of the pumped material in the chamber.
The design of the pump plate
In a typical case, a plate or a sliding vane pump must contain the following structural elements:
- Drive (asynchronous motor).
- Collapsible body or stator, made of stainless steel.
- Work with the element or the rotor svobodnoperemeschyaemymi bronze plates (blades).
The main design feature of the vane pump in comparison with the centrifugal rotor is asymmetry indices,whose axis of rotation is located with a certain eccentricity in relation to the real axis of symmetry. In addition, the rotor has a groove design, which is a bronze plate. When the rotor rotates, plate under the action of gravity and centrifugal forces are moving in the groove towards the wall of the stator (korpusa pump), thereby changing the volume of the working chamber and pushing the transported material to the outlet nozzle. For a pumps similar design characteristic periodic messages intake and output lines, whereas the centrifugal they are constantly connected hydraulically.
Advantages wHibernia pumps
In addition to the possibility of pumping viscous liquids and trudnotransportiruemye, vane pumps still possess a number of advantages:
- High pressure;
- the ability to self-priming;
- Compensation of wear of the blades.
Disadvantages slide pumps
Where there are pluses and minuses there are obvious and positive displacement pumps vane type is not an exception. Their main disadvantages are:
- increased vibration;
- uneven supply;
- sensitivity to contaminateeniyu working environment.