Submersible pump is an important equipment for deep well water extraction, groundwater extraction to the surface, widely used in domestic water, mining rescue, industrial cooling, farm irrigation, sea water lifting, shipping transfer, fountain landscape, hot spring bathing, etc. field. Submersible pumps on the use of media is divided into water submersible pumps, sewage submersible pumps, submersible seawater pumps (corrosion) three categories. Following the current market is relatively large amount of submersible pumps for type selection analysis. First, the deep well submersible pump Deep submersible pump is the motor and pump directly into the water one of the direct water lifting equipment, with simple structure, high efficiency unit, low noise, safe and reliable operation, easy installation and maintenance advantages. It is suitable for extraction from deep wells, hot wells and oceans, as well as for extraction of rivers, reservoirs and drains. It is mainly used for irrigation of farmland and human and livestock water in plateau and mountainous areas. It can also be used in cities, factories, railways, mines and construction sites Drainage use. Deep well submersible pump ATQJ series deep submersible pump Brief introduction: AT150QJ: the largest external diameter 143mm, the outlet diameter is divided into 65,68 mm two, center distance 110mm, flow 10-50m3 / h; AT200QJ: maximum diameter of the unit 184mm, outlet diameter DN100 , The center distance is 150mm and the flow rate is 10-80m3 / h; AT250QJ: The maximum diameter of the unit is 234mm, the outlet diameter is DN125, the center distance is 180mm, the flow rate is 50-200m3 / h; AT300QJ: The maximum diameter of the unit is 281mm; , The flow rate of 160-370-50m3 / h; AT350QJ: unit maximum diameter 330mm, outlet diameter DN200, center distance 256mm, flow 300-450m3 / h; AT400QJ: unit maximum diameter 360mm, outlet diameter DN250, center distance 325mm, 300-650m3 / h; AT500QJ: maximum outside diameter 430mm, flow 450-550m3 / h; AT600QJ: maximum outside diameter 520mm, flow rate 650-900m3 / h; AT700QJ: maximum outside diameter 600mm, flow rate 1000-1250m3 / h ; AT800QJ: The maximum diameter of the unit 600mm, flow 1000-1250m3 / h; AT900QJ: The maximum diameter of the unit 670mm, flow 1500-2400m3 / h; Users can choose according to the wellbore diameter, water temperature, PH value, water inflow, Suitable models 1. Influx of water (unit m3 / h) Unit time down well water . 2. Still water level (unit m) The distance from the wellhead to the surface of the water before pumping. 3. Moving water level (unit m) When the pump is turned on, the water level in the well will decrease with the pumping time. In the water pump is relatively stable, the water down to a certain depth will be stabilized when the water surface to the ground distance. 4. Caliber (mm), points 150,200,250,300,350,400,500,600,700,800,900 variety of specifications. 5. Head (in m) = moving water level to head vertical distance + pipeline loss. Matters needing attention: 1, suggesting wells containing more than one ten thousandth of a runner: It is not appropriate to install the use of deep well pump. Because well water content is too large, such as more than 0.1%, will accelerate the wear of rubber bearings, causing pump vibration, shorten the pump life. 2. According to the descending depth of the well water level and head loss of the water pipeline: Determine the actual required lift of the well pump, that is, the lift of the well pump, which is equal to the vertical distance (net head) from the water level to the water surface of the tank plus the head of loss. The head of loss is usually 6 - 9% of the net head, usually 1 - 2m. Pump the lowest impeller into the water depth of 1 - 1.5m is appropriate. The total length of the downhole portion of the pump tube shall not exceed the maximum length of the well into which it is specified in the pump instructions. 3, according to the amount of well water: selected well pump flow. Each well has an economically optimal volume of water that should flow at a rate equal to or less than the level at which the well water level drops to half the well depth. When the pumping capacity is greater than the machine water, it will cause the machine wall collapse and siltation, affecting the life of the well; if the pumping is too small, the benefits of the well can not be fully realized. So, the best way is to pump wells pumping test, with the wells may provide the largest amount of water for the selected well pump flow basis. Pump flow to the label number or label on the manual shall prevail. 4, according to the caliper, water quality initial pump: different types of pumps on the diameter of the wells have certain requirements, the maximum size of the pump is less than the caliper 25--50mm. If the borehole skew, the maximum size of the pump should be smaller. In short, the part of the pump body can not close to the inner wall of the well to prevent the pump from damaging the well due to vibrations of the pump. Deep submersible pumps for deep well, hot water wells and the extraction of the ocean can also be used for irrigation and plateau mountain water, factories, railways, mines for drainage. In our country, deep well submersible pump after years of development, more and more suitable for people's production and life. To study it further is the need of the times. Only when the relevant work is done more carefully can its future development be smoother.
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