A fresh water pump, sewage pump, what's the difference between the two

2019 - 11 - 27

a fresh water pump, a water pump, what's the difference between the two? Here we simply talk about the difference between these two kinds of water pump. 1, sewage pump in order to avoid congestion, with large flow channel design is given priority to, such natural lead to efficiency is relatively low, so head generally is not high. The fresh water pump flow is small, gap is smaller, the head is relatively high. 2, in order to prevent winding, sewage water pump impeller design than the fresh water pump more simple, without retaining ring is equipped with jagged pieces, fabric, etc can be sundry break after pumping, and the fresh water pump impeller is complex, but the efficiency will be significantly higher than that of the former. 3, sewage pump, prone to failure, and the general centrifugal pump is also similar, because smoke sewage, so the impeller wear quickly. In order to prevent wear and corrosion, sewage pump is generally adopt wear-resisting performance is good, strong corrosion resistance of mechanical seals and o-rings as pump seal, and the fresh water pump without strict consideration. Sewage pump lift is not high, due to impurities in the water is more, the clearance between the impeller is bigger than fresh water pump. Sewage pump prone to failure, and the general centrifugal pump is also similar, because smoke sewage, so the impeller wear quickly. Sewage pump belongs to the scope of a centrifugal pump, the structure and principle and general centrifugal pump is the same. Ordinary centrifugal pump designed with high efficiency, that is to say, the fresh water pump of hydraulic structure parameters is to obtain a better combination of high efficiency. The sewage pump, pump of this kind of special requirement its efficiency can not be more than the same period of the fresh water pump efficiency. Sewage pump efficiency is lower than the fresh water pump is the major reason for their circulation road widening. Efficiency decline in the value of the main related to widen the extent of the. Sewage pump flow channel widening is to prevent blocking. Sewage pump impeller, simple than fresh water pump, there is no retainer, so as not to when in the grass, the bottom of the impeller and a jagged piece, can adjust up and down, the thread, the pieces of cloth were ground and pull out. Is fresh water pump can transport water and physical and chemical properties of similar Yu Qingshui other liquid and is applicable to industrial and urban water supply and drainage, pressurized water supply in high-rise building, garden sprinkler irrigation, fire pressurization, long-distance transmission, hvac refrigeration cycle, cold and hot water circulation pressurization in farmland irrigation, bathroom, etc, and form a complete set of equipment. Fresh water water pump motor and pump together as whole, motor rotor fulcrum bearing and water pump bearing, make the pump impeller rotating power transfer to a rigid work pressure reducing valve. Between the pump impeller and eddy shell is only 0. 10 - 0. 22 mm clearance, sundry sand easily jammed the impeller, the motor rotor to rotate and failure. From repair water pump failure analysis for impeller jammed damage probability accounted for more than eighty percent. When turn off the power switch, such as found that the motor does not turn, should turn off the power supply in time, when the motor work with inductance to produce a rotating magnetic field, a short time, the motor will not damage. Can use the screwdriver to remove the motor back cover, with the hand around rotating fan Ye Zhi to flexible back to back cover again electrify.

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