Causes and solutions of sewage pump without water

Some of the deeper water, some of the surrounding terrain is relatively flat, while ignoring the pump allows suction process, which will result in little or no water absorption of the results of the water. There is a limit to the vacuum degree at which the water pump suction mouth is built, the absolute vacuum suction range is about 10m high water column, while the pump is not possible to establish an absolute vacuum. And a large vacuum, easy to make the pump water vapor, the pump work. Therefore, the centrifugal pump has its maximum allowable suction process, generally between 3-8.5m. When installing water pump is simple and easy to avoid.

Part of the user after measurement, although the water reservoir or water tower to the vertical distance from the water surface is slightly less than the pump head, but a small amount of water or the pipeline resistance loss is too large. The reason is that the pipe is too long, the water pipe bends more, the water flow in the pipeline resistance loss is too large. Under normal circumstances 90 degree elbow than 120 degree elbow resistance, each 90 degrees bend head loss of about 0.5-1m, the resistance of each 20m pipeline can make the head loss of about 1m.

1. At the end of the valve open, usually due to water pump set aside a long time, the valve gasket is stuck, no washer at the end of the valve may will rust.

2. Valve filter is blocked; or potential water valve at the end of the sludge layer caused by the blockage of the strainer

3. Impeller wear is serious; impeller blades are worn for a long time, which affects the performance of the pump;

4. Gate valve or check valve malfunction or blockage will cause flow to reduce or even draw no water;