Power pump refers to the rapid rotation of the impeller on the liquid force, the mechanical energy transfer to the liquid, so that kinetic energy and pressure can increase, and then through the pump cylinder, most of the kinetic energy is converted to pressure and delivery. Power pump, also known as impeller pump or vane pump. Some powered pumps have both main and auxiliary impellers, and centrifugal pumps are the most common type of power pumps. What is the power pump? What are the classification of power pumps? Power pump at a certain speed has a limited head lift, head with the flow and change; work stable, continuous delivery, flow and pressure pulsation; generally no self-absorption capacity, Need to pump the first filled with liquid or pipe vacuum to start working, suitable for a wide range of performance; suitable for conveying a very small viscosity of the cleaning liquid. Power water pump classification (a) gasoline power pump gasoline power pump Hansa power gasoline power pump is a common centrifugal pump. Centrifugal pump works in the case of the pump is full of water, the engine driven impeller rotation, resulting in centrifugal force, the impeller channel in the centrifugal force thrown to the periphery of the pump shell, so the impeller center pressure decreases, the pressure Below the pressure in the inlet pipe, water flows into the impeller from the sump under this pressure differential. So that the pump can continue to water constantly water supply. Gasoline powered gasoline engine gasoline is gasoline as a kind of spark ignition internal combustion engine. Gasoline reciprocating piston structure generally used by the body, crank connecting rod mechanism, gas distribution system, fuel supply system, lubrication system and ignition system and other components. Small gasoline-powered pumps general system components: 1. Crankshaft connecting rod system: including the piston, connecting rod, crankshaft, needle roller bearings, oil seals and so on. 2. The body system: including cylinder head, cylinder block, crankcase, muffler, shield and so on. 3 fuel system: including fuel tanks, switches, filters, precipitation Cup and carburetor and so on. 4. Cooling System: Including cooling fan, draft hood and so on. Some knapsack spray duster in the volute fan on the volute open cooling port, led by the draft hood cooling air flow, you no longer need a separate cooling impeller. 5. Lubrication system: Two-stroke gasoline engine with a combination of gasoline and lubricating oil lubrication and oil supply system. Four-stroke gasoline engine lubrication and fuel supply separately, the crankcase is equipped with a lubricating oil gauge. 6. With gas system: four-stroke gasoline engine by the intake and exhaust valves, rocker arm, putter, tappet and camshaft and other components. Two-stroke gasoline engine without intake and exhaust valves, but in the cylinder body with air intake, air outlet and ventilation port, the use of piston up and down movement to open or close the pores. 7. Start the system: There are two kinds of structures, one is composed of the start-up rope and the simple start-up wheel; the other is the rebound start-up structure with the spring combination of teeth and protective cover. 8. Ignition system: including magneto, high-voltage lines, spark plugs and so on. There are two types of magneto: a contact with jump frame structure and non-contact electronic ignition circuit. Gasoline-powered gasoline pumps are lighter than diesel engines, with low manufacturing costs, low noise and good low-temperature startability, but with low thermal efficiency and high fuel consumption. Motorcycles, chain saws and other low-power power machinery, in order to light, cheap, commonly used two-stroke air-cooled gasoline engine; fixed low-power gasoline engine for the sake of simple structure, reliable and low cost, mostly with four-stroke water-cooled ; Most cars and light trucks with overhead valve water-cooled gasoline engine, but with the increasing attention paid to fuel consumption, diesel engines are increasingly used in such vehicles; small aircraft engine for the sake of light and lift power, mostly with the hemisphere Air-cooled gasoline engine in the combustion chamber. (B) diesel-powered pumps Usually diesel engine is driven by the engine camshaft, with the help of high-pressure pump diesel fuel delivered to the cylinder chamber. Close to the end of the tightening stroke, the diesel fuel pump by the fuel pressure to 10MPa above, injected into the cylinder through the injector, in a very short period of time after the high-temperature air with compressed to form a combustible mixture. However, because the diesel fuel is diesel, its viscosity is larger than that of gasoline and it is not easy to evaporate. However, its autoignition temperature is lower than that of gasoline, so the composition and incineration method of the flammable mixture are different from those of the gasoline engine. Can finish very high injection pressure, and can finish the pre-eruption of diesel. Diesel engines are usually driven by crankshaft crankshafts, with the help of high-pressure oil pumps to deliver diesel fuel to each cylinder. Close to the end of the tightening stroke, the diesel fuel pump by the fuel pressure to 10MPa above, injected into the cylinder through the injector, in a very short period of time after the high-temperature air with compressed to form a combustible mixture. However, because the diesel fuel is diesel, its viscosity is larger than that of gasoline and it is not easy to evaporate. However, its autoignition temperature is lower than that of gasoline, so the composition and incineration method of the flammable mixture are different from those of the gasoline engine. Can finish very high injection pressure, and can finish the pre-eruption of diesel. Asia Fluid Network () Editor: Huang Nengwen, QQ:
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