With the development of the national economy, all walks of life in our country have undergone tremendous changes. Such as the pump industry, although these products appear in our life is not high frequency, but they have deeply affected and changed our lives. For users, they not only improve work efficiency but also create great economic benefits. Pump family sewage pump and sewage pump from our life seems to be getting closer, the user in the sewage pump and sewage pump selection rules what? Sewage pump and sewage pump selection rules Sewage pump selection rules: 1, according to the use of different power supply selection single-phase or three-phase sewage pump. 2, according to the use of demand is not required to drain the liquid, and decided to use the pump or pump. 3, the basic parameters of sewage pump selection is caliber, flow, lift, power, voltage, liquid and so on. 4, according to the discharge of traffic and delivery of the size and height of the selection of suitable sewage pump. 5, check whether there is a solid sewage pump grounding devices and safety devices to avoid affecting the safe use of sewage pumps. Sewage pump selection rules: 1, in order to improve the use of the pump, the best flow of each pump is equivalent to 1 / 2--1 / 3 of the planned flow, and to use the same type of pump for the best; 2, due to During the operation of the water pump, the water level in the water collecting tank is changed, and therefore, the selected water pump should be in the high-efficiency section in this changing range. When the water pump exceeds two in the pumping station, the pump should be selected not only in parallel operation, In single-pump operation should be in the high-efficiency section; 3, industrial drainage pumping station is usually rich in acid, alkaline or other corrosive substances, therefore, should choose good corrosion resistance of the corrosion-resistant sewage pump. 4, the pump station is often not more than four working pumps, and the same type, just set a spare unit in the pipeline; if more than four, in addition to installed in the pipeline on a spare unit, but also should A set of spare 5 in the warehouse, from the habitual flow changes and save power point of view, choose the more appropriate type of size can be used to a wider range of water. If two different types of pumps are selected, the output of the small pump should not be less than half of the output of the large pump. If one large and two large pumps are selected, the output of the small pump is not less than 1/3 of that of the large pump. The choice of product makes a lot of sense, not only that it may affect later production and work, but it may also affect the development of the entire industry. For such products as pumps, they are playing a more and more important role in the economic construction of our country. For businesses how to improve the effectiveness of product promotion, product selection rules introduction seems to be a good way.