When the sprinkler pump is used for a long time, the sprinkler pump may work normally, but the output of the sprinkler and the head of the sprinkler become smaller, and the operating efficiency of the sprinkler pump decreases, which affects the operating efficiency of the sprinkler. The main reasons for the drop in the efficiency of sprinkler pumps are as follows:
1. The internal flow passage or inlet pipe of the sprinkler pump is blocked by the foreign matter, narrowing the flow channel or the pipe, and the water flow becomes smaller.
2. There is a phenomenon of air leakage in the water inlet pipe of the sprinkler, causing bubbles and affecting the work efficiency of the sprinkler pump.
3, due to water quality or in the pump before adding drugs and other reasons, so that the pump casing internal corrosion or serious scaling. Severe fouling in the pump casing can increase the thickness of the inner wall of the pump casing by about 2mm, and the scaling of the inner wall of the water pump can cause scaling of the pump body. The volume of the pump body is reduced, the pumping volume is reduced, and the flow path is rough, the head loss increases, and the hydraulic force decreases.
4, due to cavitation, resulting in i water truck water pump impeller surface cavitation, resulting in vapor and honeycomb surface, affecting the efficiency of the water pump.
5. Due to the erosion of the water flow, the inner wall of the water pump flow path and the impeller water surface become rough, the friction coefficient of the inner flow channel of the sprinkling water pump increases, and the water flow rate in the pump body increases, the water head loss increases, and the hydraulic efficiency increases. reduce.
6. As a result of casting defects, cavitation, abrasion, corrosion, and chemical etching caused by the sprinkling of the water pump process, voids or cracks are generated in the flow path in the pump body, and eddies occur when the water flows, resulting in energy loss. The hydraulic efficiency is reduced.
7. Due to the long use time of the sprinkler pump, the leakage and resistance caused by the mechanical wear increase, the volumetric efficiency and the mechanical efficiency are reduced, the water flow becomes smaller, and the efficiency of the sprinkler water pump drops.
In short, we found that the use efficiency of the sprinkler water pump is declining. It should be checked from the following aspects: 1. Check whether the foreign matter in the pump housing is blocked and whether the inlet pipe is leaking. 2. Exclude the part of the sprinkler pump body and inspect the intact condition of the impeller, the inverted leaf, and the internal flow path of the pump casing. If severe cavitation, abrasion, etc. occur, replace the components in case of emergency.
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