(1) The volume of the liquid storage tank For gas-liquid hybrid self-priming pump, increase the volume of the liquid storage chamber, increase the storage capacity, can make the self-absorption time have different degrees of shortening. Magnetic pump stainless steel magnetic pump corrosion-resistant magnetic pump; today's effective order information free to send! Morning latest buyers information free to send! Punch grab Rob here! (2) The gap between the impeller and the septum tongue plays the role of scraping off the gas-liquid mixture from the outer edge of the impeller to prevent the gas-liquid mixture from circulating locally in the volute chamber. The smaller the gap between the bellmouth and the impeller is, the more gas The more liquid mixture, the shorter the self-priming time, but the gap is too small will pump a larger flow noise. (3) Impeller outlet width and snail cross-sectional area For the external mixed self-priming pump, wide impeller exit width and snail cross section is conducive to the full mixing of gas and liquid to reduce self-absorption time. (4) Backflow hole area test shows that the area of ​​the backflow hole has an optimum value. The area of ​​the backflow hole is smaller than the optimum value and the self-priming time is prolonged. When the area of ​​the backflow hole is larger than the optimum value, the self-priming height and the pump efficiency will both decrease. (5) backflow hole position External mixed self-suction pump backflow hole at different positions, self-absorption effect is different, usually placed near the bottom of the pump scroll position.
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