Centrifugal pump works and features

Centrifugal pump working principle and characteristics 1, the working principle of centrifugal pump Before the pump starts, the pump and the inlet pipe filled with water, the pump is running, the centrifugal force generated by the rotation of the impeller at high speed, the leaves The water in the turns of the road was thrown around, pressed into the volute, the impeller entrance to form a vacuum, the pool of water in the external atmospheric pressure along the suction pipe was inhaled to supplement this space. The inhaled water is then thrown out of the impeller by the volute into the outlet pipe. Thus, if the centrifugal pump impeller constantly rotating, you can continuously absorb water, pressure water, water can continue to rise from low to high or far away. In summary, the centrifugal pump is due to the centrifugal force generated by the high-speed rotation of the impeller, the water is raised to the high, it is called centrifugal pump. 2, the general characteristics of centrifugal pumps (1) water along the centrifugal pump flow direction is along the impeller axial suction, perpendicular to the axial outflow, that is, into and out of the flow direction of mutual 90 °. (2) As the centrifugal pump to form a vacuum suction by the impeller inlet, so before starting pump and the suction pipe must be filled with water, or use a vacuum pump to evacuate the air to form a vacuum, and the pump housing and suction pipe must be strictly sealed, Do not leak, or can not form a vacuum, it can not absorb the water. (3) Since it is impossible to form an absolute vacuum at the inlet of the impeller, the suction height of the centrifugal pump can not exceed 10 meters. Adding the water loss through the suction pipe, the actual allowable installation height (the pump shaft is far away from the suctioned water) 10 m. If the installation is too high, it will not absorb water. In addition, because the mountainous area is lower than the atmospheric pressure in the plain, the same pump should be installed at a lower level in the mountains, especially in the high mountains. Otherwise, the water can not be sucked in. Therefore, its structure of course is not the same, the material is also different, in a word, can be roughly divided into: 1, the city water supply 2, Sewage system 3, civil engineering and construction system 4, agricultural and water conservancy system 5, power station system 6, chemical system 7, petroleum industry system 8, mining and metallurgy system 9, light industrial system 10, ship system (Editor: Xiao Xia QQ:) Read: 2017 Exhibition Information

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