Selection of deep well pump

1. According to the borehole diameter, water pump set. Different types of pumps have certain requirements on the size of the hole diameter, the maximum size of the pump is less than 25 to 50mm. If the well bore is skewed, the pump should be smaller in size. In short, the pump body can not be close to the inner wall of the well, the water pump vibration will damage the well. 

 2. According to the water of the well, the flow of the well pump. Each hole has an economically optimal water pump flow should be equal to or less than the water depth of water wells decreased to half of the water. When the pumping wells more water than the water, will cause the machine collapse deposit, influence the service life of the pumping well; if the amount is too small, well the benefits can not be brought into full play. So, the best way is to wells pumping test in wells may provide the greatest amount of water for the selected flow rate of well pump. The pump flow rate, with marked label type or specification of the digital standard. 

 3. According to the water level drop depth and water pipe head loss, determine the actual needs of the pump head, the pump head is well, it is equal to the water level to the vertical distance from the surface of the pool (net lift) plus the lift loss. Loss of head is usually a net head of 6 ~ 9%, generally for the water pump from the bottom to the top of the 1.5m is generally 1 ~ 2M. water pump impeller to the bottom of the depth of water. The total length of the pipe under the pump should not exceed the provisions of the manual pump wells into maximum length. 

 4. Suggesting that more than 1/10000 of the sediment water wells, used for the installation of deep well pump. Because the water content is too large, such as more than 0.1%, wear rubber bearings will be accelerated, causing the pump vibration, shorten the service life of the water pump.