To reduce the chemical pipeline pump head is what problems

Chemical pipeline pump is installed in the middle of the pipe, a booster effect, also known as the booster pump, chemical pipeline pump according to the performance of anti-corrosion type, type, material has fluorine-butterfly pipeline pump, stainless steel pipe pump, such as cast iron pipe pump, pipeline pump is usually a vertical structure, also has a horizontal structure, the chemical pipeline pump in use process due to some reason may cause head is reduced, so what are the cause of the impact head? One, the motor reverse because of wiring leads to the steering and the actual requirements of the pump on the contrary, this generally starts to look at the first steering pump, if turned inside out, on the motor terminal shall be any two wires on the exchange. Second, the speed to reduce the important factors influencing the pump head is the outer diameter of the impeller and the pump rotating speed, in the case of other conditions unchanged, the secondary pump lift and speed is direct ratio relation, visible speed effect on the head is very big, sometimes because of some reason of external makes the pump speed is reduced, will be the corresponding lower pump lift. Shall check the rotational speed of water pump at this time, if that is the speed is not enough, should check the reason, the reasonable solution. Three, point to the large capacity low head migration in general, the performance of the centrifugal pump has a continuous downward curve, flow with the loss of the lift increases gradually. In the process of operation, due to some reason pump back pressure decreases, the working point of the pump device passively as curve to the low lift large flow deviation, it will cause head lower, this is due to the change of the external factors such as equipment, no special relationship with the pump itself. At this time as long as the increasing back pressure pump, such as closing the outlet valve, etc. To solve the problem. Four, inner leakage occurs when the rotating and stationary part inside the pump clearance exceeds the scope of design, will lead to internal leak, embodied in the pump discharge pressure drop, such as impeller mouth ring gap, gap between the level of multistage pump. At this time should undertake the corresponding overhaul, responsible for the parts of the gap is too large for repair or replacement. Five, the entrance to the cavitation occurred if the pump suction pressure is too low, lower than the saturated vapor pressure of pumping medium, will form the cavitation. Check the import pipeline system at this time whether the presence of blocking or import valve opening is too small, or improve the suction liquid level height of the pool. Part six, the impeller flow channel plugging if impeller flow channel plugging, will affect the work of the impeller, led to the outlet pressure drop. So you need to tear open removal pump inspection. In order to prevent the problem again, if necessary, can be set up in front of the pump inlet filter unit.
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