The wilden pump self-priming

Wilden pump diaphragm and chamber, confined space, the contraction and expansion of the diaphragm have a strong negative pressure to the liquid suction pump and discharge.
After the start of the self-priming pump impeller in the water by centrifugal force to the outer edge of the impeller and the impeller outer edge of the gas mixture to form a circle of foam strip gas and water mixture. The foam with every other tongue scrapers underneath the air-water mixture into the air-water separation chamber in the diffusion tube. At this point, over the water area of the sudden increase of the flow rate to quickly lower the relative density of the gas escaping from the water to drain away by pump pressure exports, the relative density of water, fell to the bottom of the gas and water separation chamber, and axial reflux Kong to return to the impeller outer edge, again mixed with the gas. With the continuous cycle of the above process, the vacuum suction tube boosting the transport of water will continue to rise along the suction pipe. Be completely filled with water pump, the pump into the normal working state, through the entire process of self-absorption.
Self-priming pump and pneumatic diaphragm pumps are vacuum sucked into the liquid and exclusion, but their principle is completely different, pneumatic diaphragm pumps can be idle, but the self-priming pump without water in the pump body, the liquid will not be inhaled and transport, whichis both the biggest difference.

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