Self-priming pump in a difficult challenge

11 - 06

self-priming pump in the difficult challenge of self-priming pump self-priming height, and before the impeller seal clearance, the revolutions of the pump, separation chamber level and other factors. Before the impeller seal gap is smaller, the greater the self-priming height, generally take to 0. 3 to 0. 5 mm; Increase in clearance, in addition to the self-priming height decreased, self-priming pump lift and efficiency are reduced. Self-priming pump self-priming height increases with the impeller circumferential velocity u2, but by the time the largest self-priming height, turn the increase in the number and self-priming height is no longer increased, at this time just shorten the self-priming time; When the revolution down, self-priming pump self-priming height is falling. In the case of other conditions unchanged, self-priming pump self-priming height also increased with the increase of water height increase ( But not more than the best water separation room height) 。 To mix in the self-priming pump gets better water, impeller blade should be less, the pitch in the cascade increase; And the appropriate USES half open impeller ( Or wider impeller impeller slot) So that more convenient in backwater deeply into the impeller blade. Most with internal combustion engine self-priming pump, mounted on a mobile car, for field operation. Self-priming pump is according to the relevant technical data at home and abroad after absorption, digestion, improve the development of pump energy saving products. Self-priming pump is a self-priming centrifugal pump, self-priming pump has a compact structure, convenient operation, stable operation, convenient maintenance, high efficiency, long service life, and have strong self-priming capacity, etc. Self-priming pump pipe does not need to install the bottom valve in the road, just keep self-priming pump pump body before work are quantitative liquid storage, thus simplifies the pipeline system, in order to improve the working conditions. Self-priming pump main use: 2, mount a rocker arm sprayer, the water can go into the air, a small drips to spray, self-priming pump is a good tool for farm, nursery, garden, tea garden. 3, Yu Qingshui applied to self-priming pump, water, chemical liquid medium with acid, alkalinity and with general mushy slurry ( Medium viscosity 100 mile, or less under the solid content of 30%) 。 4, self-priming pump, and matched with pressure filter of any model and specifications, send slurry to press filter to filter the most ideal auxiliary pump. Self-priming pump product characteristics: 1, the drainage ability: special impeller block design, ensure the self-priming pump efficiency and no blockage. 2, high efficiency and energy saving: the excellent hydraulic model, the efficiency is higher than general self-priming pump 3 ~ 5%. 3, good self-priming performance, higher than average self-priming pump self-priming height 1 meter, and with a shorter time. Self-priming pump adopts the axial liquid pump body structure. Self-priming pump pump body is composed of suction chamber, liquid storage chamber, coil vortex chamber, the liquid hole, and other components of the gas-liquid separation chamber, self-priming pump after the normal starting, the impeller of the suction chamber liquid and inlet line of air suction, and can completely mixed within the impeller, the function of centrifugal force, and liquid with gas to the vortex flow volume outside edge, the impeller has a certain thickness is formed on the outer edge of the white foam belt and high-speed rotating liquid ring. Gas-liquid mixture into the gas-liquid separation chamber through diffusion tube. At this time, due to the flow rate suddenly drops, lighter gas is separated from the mixture of liquid and gas through the pump body spit continues to rise. After degassing of liquid to liquid storage chamber, and the reflux hole again into the impeller, and impeller with inhalation of gases from the inlet line mixed again, under the influence of the high-speed rotating impeller, and flow to the impeller outer edge. 。 。 。 。 。 。 As the process cycle, decreasing the air in the suction line, until all gas absorption, complete the self-priming process, self-priming pump is put into normal operation. In some of the self-priming water pump at the bottom of the bearing body is equipped with cooling room. When bearing fever caused by bearing temperature rises more than 70 degrees, can be arbitrary in the cooling chamber through a cooling fluid pipe, liquid injection cooling circulating cooling. Self-priming pump to prevent fluid from high to low pressure area before and after the leakage of sealing mechanism is sealing ring, sealing ring before loading on the pump body, the ring is installed on the bearing body, when the self-priming pump after long-term operation sealing ring wear, and affect the efficiency and self-priming pump, self-priming performance should be given replacement.

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