The circulating pump used for floor heating generally adopts shielded centrifugal pump. The working principle is to rely on the high-speed rotating impeller, and the liquid obtains energy under the action of inertial centrifugal force, so as to improve the pressure of floor heating water circulation system. Before the pump works, the pump body and water inlet pipe must be filled with water to prevent cavitation.
When the impeller rotates rapidly, the blade promotes the water to rotate quickly. The rotating water flies away from the impeller under the action of centrifugal force. After the water in the pump is thrown out, a vacuum area is formed in the center of the impeller. Under the action of atmospheric pressure (or water pressure), the water of Shuiyuan is pressed into the water inlet pipe of floor heating through the main pipe. In this way, continuous pumping and repeated circulation.
