High-lift pump in the low-lift use should pay attention to what the problem

The lift of the high-lift self-priming pump has an important relationship with its self-priming height, and the self-priming height is also related to the impeller seal clearance, the number of revolutions of the pump and the level of the liquid in the separating chamber. So high-lift self-priming pump in the low-lift use should pay attention to what problems? High-lift self-priming pump in the low-lift use should pay attention to what the problem High-lift self-priming pump low head use, the matching motor power will exceed the rated power. Because it is clear from the characteristic curve of the self-priming pump that when the pressure drops, the flow rate increases, the power curve also increases, and the pump efficiency also decreases, so the pump flow and head selection are important, allowing the pump to operate at its efficiency Near the top of the curve. Self-priming pump head is used to overcome the height and resistance, high-lift pump at high lift point of his flow is the design point of flow, if the low-lift work, equivalent to the pump outlet resistance decreases, which When the pump flow will increase, the motor will be overloaded, beyond a certain extent will burn the motor. For example, a feed pump has a head of 50 meters and a flow rate of 50 cubic meters per hour. When it feeds water at a height of 50 meters, its flow rate is 50 cubic meters per hour. When it feeds water up to 40 meters, Its height and resistance reduce its flow may reach 80-90 cubic meters / hour, then the motor will heat or burn. As long as we understand the principle of self-priming pump on it, the pump at work, flow and lift it is a relationship, you will understand the high-lift self-priming pump in the low-head use should pay attention to the problem. Read more: China Building Water Exhibition Pump Valve Tube Fittings Exhibition Water Expo Xiamen Maritime Exhibition Internet + Forum Yiwu Expo Industry Interconnection (Xiamen) Technology Co., Ltd. Asia Pump Network Editor: He Duanhui (QQ / WeChat:) http://beng.liuti.cn/ (service hotline:)